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Commit 11b84c58 authored by Linus Torvalds's avatar Linus Torvalds
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Merge tag 'mmc-updates-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.8:

  Core:
   - Expose access to the eMMC RPMB ("Replay Protected Memory Block")
     area by extending the existing mmc_block ioctl.
   - Add SDIO powered-suspend DT properties to the core MMC DT binding.
   - Add no-1-8-v DT flag for boards where the SD controller reports
     that it supports 1.8V but the board itself has no way to switch to
     1.8V.
   - More work on switching to 1.8V UHS support using a vqmmc regulator.
   - Fix up a case where the slot-gpio helper may fail to reset the host
     controller properly if a card was removed during a transfer.
   - Fix several cases where a broken device could cause an infinite
     loop while we wait for a register to update.

  Drivers:
   - at91-mci: Remove obsolete driver, atmel-mci handles these devices
     now.
   - sdhci-dove: Allow using GPIOs for card-detect notifications.
   - sdhci-esdhc: Fix for recovering from ADMA errors on broken silicon.
   - sdhci-s3c: Add pinctrl support.
   - wmt-sdmmc: New driver for WonderMedia SD/MMC controllers."

* tag 'mmc-updates-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (65 commits)
  mmc: sdhci: implement the .card_event() method
  mmc: extend the slot-gpio card-detection to use host's .card_event() method
  mmc: add a card-event host operation
  mmc: sdhci-s3c: Fix compilation warning
  mmc: sdhci-pci: Enable SDHCI_CAN_DO_HISPD for Ricoh SDHCI controller
  mmc: sdhci-dove: allow GPIOs to be used for card detection on Dove
  mmc: sdhci-dove: use two-stage initialization for sdhci-pltfm
  mmc: sdhci-dove: use devm_clk_get()
  mmc: eSDHC: Recover from ADMA errors
  mmc: dw_mmc: remove duplicated buswidth code
  mmc: dw_mmc: relocate where dw_mci_setup_bus() is called from
  mmc: Limit MMC speed to 52MHz if not HS200
  mmc: dw_mmc: use devres functions in dw_mmc
  mmc: sh_mmcif: remove unneeded clock connection ID
  mmc: sh_mobile_sdhi: remove unneeded clock connection ID
  mmc: sh_mobile_sdhi: fix clock frequency printing
  mmc: Remove redundant null check before kfree in bus.c
  mmc: Remove redundant null check before kfree in sdio_bus.c
  mmc: sdhci-imx-esdhc: use more devm_* functions
  mmc: dt: add no-1-8-v device tree flag
  ...
parents 29594404 71e69211
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Documentation/devicetree/bindings/mmc/mmc.txt
View file @ 11b84c58
......@@ -21,6 +21,12 @@ Optional properties:
- cd-inverted: when present, polarity on the cd gpio line is inverted
- wp-inverted: when present, polarity on the wp gpio line is inverted
- max-frequency: maximum operating clock frequency
- no-1-8-v: when present, denotes that 1.8v card voltage is not supported on
this system, even if the controller claims it is.
Optional SDIO properties:
- keep-power-in-suspend: Preserves card power during a suspend/resume cycle
- enable-sdio-wakeup: Enables wake up of host system on SDIO IRQ assertion
Example:
......@@ -33,4 +39,6 @@ sdhci@ab000000 {
cd-inverted;
wp-gpios = <&gpio 70 0>;
max-frequency = <50000000>;
keep-power-in-suspend;
enable-sdio-wakeup;
}
Documentation/devicetree/bindings/mmc/samsung-sdhci.txt
View file @ 11b84c58
......@@ -12,10 +12,6 @@ is used. The Samsung's SDHCI controller bindings extends this as listed below.
[A] The property "samsung,cd-pinmux-gpio" can be used as stated in the
"Optional Board Specific Properties" section below.
[B] If core card-detect bindings and "samsung,cd-pinmux-gpio" property
is not specified, it is assumed that there is no card detection
mechanism used.
Required SoC Specific Properties:
- compatible: should be one of the following
- "samsung,s3c6410-sdhci": For controllers compatible with s3c6410 sdhci
......@@ -24,14 +20,18 @@ Required SoC Specific Properties:
controller.
Required Board Specific Properties:
- gpios: Should specify the gpios used for clock, command and data lines. The
gpio specifier format depends on the gpio controller.
- Samsung GPIO variant (will be completely replaced by pinctrl):
- gpios: Should specify the gpios used for clock, command and data lines. The
gpio specifier format depends on the gpio controller.
- Pinctrl variant (preferred if available):
- pinctrl-0: Should specify pin control groups used for this controller.
- pinctrl-names: Should contain only one value - "default".
Optional Board Specific Properties:
- samsung,cd-pinmux-gpio: Specifies the card detect line that is routed
through a pinmux to the card-detect pin of the card slot. This property
should be used only if none of the mmc core card-detect properties are
used.
used. Only for Samsung GPIO variant.
Example:
sdhci@12530000 {
......@@ -40,12 +40,18 @@ Example:
interrupts = <0 75 0>;
bus-width = <4>;
cd-gpios = <&gpk2 2 2 3 3>;
/* Samsung GPIO variant */
gpios = <&gpk2 0 2 0 3>, /* clock line */
<&gpk2 1 2 0 3>, /* command line */
<&gpk2 3 2 3 3>, /* data line 0 */
<&gpk2 4 2 3 3>, /* data line 1 */
<&gpk2 5 2 3 3>, /* data line 2 */
<&gpk2 6 2 3 3>; /* data line 3 */
/* Pinctrl variant */
pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4>;
pinctrl-names = "default";
};
Note: This example shows both SoC specific and board specific properties
......
Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
View file @ 11b84c58
......@@ -19,6 +19,7 @@ ti,dual-volt: boolean, supports dual voltage cards
"supply-name" examples are "vmmc", "vmmc_aux" etc
ti,non-removable: non-removable slot (like eMMC)
ti,needs-special-reset: Requires a special softreset sequence
ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
Example:
mmc1: mmc@0x4809c000 {
......
Documentation/devicetree/bindings/mmc/vt8500-sdmmc.txt 0 → 100644
View file @ 11b84c58
* Wondermedia WM8505/WM8650 SD/MMC Host Controller
This file documents differences between the core properties described
by mmc.txt and the properties used by the wmt-sdmmc driver.
Required properties:
- compatible: Should be "wm,wm8505-sdhc".
- interrupts: Two interrupts are required - regular irq and dma irq.
Optional properties:
- sdon-inverted: SD_ON bit is inverted on the controller
Examples:
sdhc@d800a000 {
compatible = "wm,wm8505-sdhc";
reg = <0xd800a000 0x1000>;
interrupts = <20 21>;
clocks = <&sdhc>;
bus-width = <4>;
sdon-inverted;
};
Documentation/mmc/mmc-dev-attrs.txt
View file @ 11b84c58
......@@ -25,6 +25,8 @@ All attributes are read-only.
serial Product Serial Number (from CID Register)
erase_size Erase group size
preferred_erase_size Preferred erase size
raw_rpmb_size_mult RPMB partition size
rel_sectors Reliable write sector count
Note on Erase Size and Preferred Erase Size:
......@@ -65,6 +67,11 @@ Note on Erase Size and Preferred Erase Size:
"preferred_erase_size" is in bytes.
Note on raw_rpmb_size_mult:
"raw_rpmb_size_mult" is a mutliple of 128kB block.
RPMB size in byte is calculated by using the following equation:
RPMB partition size = 128kB x raw_rpmb_size_mult
SD/MMC/SDIO Clock Gating Attribute
==================================
......
MAINTAINERS
View file @ 11b84c58
......@@ -1237,6 +1237,7 @@ F: drivers/video/wm8505fb*
F: drivers/video/wmt_ge_rops.*
F: drivers/tty/serial/vt8500_serial.c
F: drivers/rtc/rtc-vt8500-c
F: drivers/mmc/host/wmt-sdmmc.c
ARM/ZIPIT Z2 SUPPORT
M: Marek Vasut <marek.vasut@gmail.com>
......@@ -1368,14 +1369,6 @@ S: Maintained
F: drivers/atm/
F: include/linux/atm*
ATMEL AT91 MCI DRIVER
M: Ludovic Desroches <ludovic.desroches@atmel.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.atmel.com/products/AT91/
W: http://www.at91.com/
S: Maintained
F: drivers/mmc/host/at91_mci.c
ATMEL AT91 / AT32 MCI DRIVER
M: Ludovic Desroches <ludovic.desroches@atmel.com>
S: Maintained
......
arch/arm/mach-at91/include/mach/board.h
View file @ 11b84c58
......@@ -70,16 +70,6 @@ struct at91_cf_data {
extern void __init at91_add_device_cf(struct at91_cf_data *data);
/* MMC / SD */
/* at91_mci platform config */
struct at91_mmc_data {
int det_pin; /* card detect IRQ */
unsigned slot_b:1; /* uses Slot B */
unsigned wire4:1; /* (SD) supports DAT0..DAT3 */
int wp_pin; /* (SD) writeprotect detect */
int vcc_pin; /* power switching (high == on) */
};
extern void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data);
/* atmel-mci platform config */
extern void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data);
......
arch/arm/plat-omap/include/plat/mmc.h
View file @ 11b84c58
......@@ -126,6 +126,7 @@ struct omap_mmc_platform_data {
/* we can put the features above into this variable */
#define HSMMC_HAS_PBIAS (1 << 0)
#define HSMMC_HAS_UPDATED_RESET (1 << 1)
#define HSMMC_HAS_HSPE_SUPPORT (1 << 2)
unsigned features;
int switch_pin; /* gpio (card detect) */
......
drivers/mmc/card/block.c
View file @ 11b84c58
......@@ -57,6 +57,7 @@ MODULE_ALIAS("mmc:block");
#define INAND_CMD38_ARG_SECERASE 0x80
#define INAND_CMD38_ARG_SECTRIM1 0x81
#define INAND_CMD38_ARG_SECTRIM2 0x88
#define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
static DEFINE_MUTEX(block_mutex);
......@@ -126,6 +127,10 @@ enum mmc_blk_status {
module_param(perdev_minors, int, 0444);
MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md);
static int get_card_status(struct mmc_card *card, u32 *status, int retries);
static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
{
struct mmc_blk_data *md;
......@@ -357,6 +362,38 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
return ERR_PTR(err);
}
static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status,
u32 retries_max)
{
int err;
u32 retry_count = 0;
if (!status || !retries_max)
return -EINVAL;
do {
err = get_card_status(card, status, 5);
if (err)
break;
if (!R1_STATUS(*status) &&
(R1_CURRENT_STATE(*status) != R1_STATE_PRG))
break; /* RPMB programming operation complete */
/*
* Rechedule to give the MMC device a chance to continue
* processing the previous command without being polled too
* frequently.
*/
usleep_range(1000, 5000);
} while (++retry_count < retries_max);
if (retry_count == retries_max)
err = -EPERM;
return err;
}
static int mmc_blk_ioctl_cmd(struct block_device *bdev,
struct mmc_ioc_cmd __user *ic_ptr)
{
......@@ -368,6 +405,8 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
struct mmc_request mrq = {NULL};
struct scatterlist sg;
int err;
int is_rpmb = false;
u32 status = 0;
/*
* The caller must have CAP_SYS_RAWIO, and must be calling this on the
......@@ -387,6 +426,9 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
goto cmd_err;
}
if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
is_rpmb = true;
card = md->queue.card;
if (IS_ERR(card)) {
err = PTR_ERR(card);
......@@ -437,12 +479,23 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
mmc_claim_host(card->host);
err = mmc_blk_part_switch(card, md);
if (err)
goto cmd_rel_host;
if (idata->ic.is_acmd) {
err = mmc_app_cmd(card->host, card);
if (err)
goto cmd_rel_host;
}
if (is_rpmb) {
err = mmc_set_blockcount(card, data.blocks,
idata->ic.write_flag & (1 << 31));
if (err)
goto cmd_rel_host;
}
mmc_wait_for_req(card->host, &mrq);
if (cmd.error) {
......@@ -478,6 +531,18 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
}
}
if (is_rpmb) {
/*
* Ensure RPMB command has completed by polling CMD13
* "Send Status".
*/
err = ioctl_rpmb_card_status_poll(card, &status, 5);
if (err)
dev_err(mmc_dev(card->host),
"%s: Card Status=0x%08X, error %d\n",
__func__, status, err);
}
cmd_rel_host:
mmc_release_host(card->host);
......@@ -1034,6 +1099,9 @@ static int mmc_blk_err_check(struct mmc_card *card,
*/
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) {
u32 status;
unsigned long timeout;
timeout = jiffies + msecs_to_jiffies(MMC_BLK_TIMEOUT_MS);
do {
int err = get_card_status(card, &status, 5);
if (err) {
......@@ -1041,6 +1109,17 @@ static int mmc_blk_err_check(struct mmc_card *card,
req->rq_disk->disk_name, err);
return MMC_BLK_CMD_ERR;
}
/* Timeout if the device never becomes ready for data
* and never leaves the program state.
*/
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state!"\
" %s %s\n", mmc_hostname(card->host),
req->rq_disk->disk_name, __func__);
return MMC_BLK_CMD_ERR;
}
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
......@@ -1504,6 +1583,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = parent;
set_disk_ro(md->disk, md->read_only || default_ro);
if (area_type & MMC_BLK_DATA_AREA_RPMB)
md->disk->flags |= GENHD_FL_NO_PART_SCAN;
/*
* As discussed on lkml, GENHD_FL_REMOVABLE should:
......
drivers/mmc/card/queue.c
View file @ 11b84c58
......@@ -68,6 +68,16 @@ static int mmc_queue_thread(void *d)
if (req || mq->mqrq_prev->req) {
set_current_state(TASK_RUNNING);
mq->issue_fn(mq, req);
/*
* Current request becomes previous request
* and vice versa.
*/
mq->mqrq_prev->brq.mrq.data = NULL;
mq->mqrq_prev->req = NULL;
tmp = mq->mqrq_prev;
mq->mqrq_prev = mq->mqrq_cur;
mq->mqrq_cur = tmp;
} else {
if (kthread_should_stop()) {
set_current_state(TASK_RUNNING);
......@@ -77,13 +87,6 @@ static int mmc_queue_thread(void *d)
schedule();
down(&mq->thread_sem);
}
/* Current request becomes previous request and vice versa. */
mq->mqrq_prev->brq.mrq.data = NULL;
mq->mqrq_prev->req = NULL;
tmp = mq->mqrq_prev;
mq->mqrq_prev = mq->mqrq_cur;
mq->mqrq_cur = tmp;
} while (1);
up(&mq->thread_sem);
......
drivers/mmc/core/bus.c
View file @ 11b84c58
......@@ -225,8 +225,7 @@ static void mmc_release_card(struct device *dev)
sdio_free_common_cis(card);
if (card->info)
kfree(card->info);
kfree(card->info);
kfree(card);
}
......
drivers/mmc/core/core.c
View file @ 11b84c58
......@@ -42,6 +42,9 @@
#include "sd_ops.h"
#include "sdio_ops.h"
/* If the device is not responding */
#define MMC_CORE_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
/*
* Background operations can take a long time, depending on the housekeeping
* operations the card has to perform.
......@@ -1631,6 +1634,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
{
struct mmc_command cmd = {0};
unsigned int qty = 0;
unsigned long timeout;
int err;
/*
......@@ -1708,6 +1712,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
if (mmc_host_is_spi(card->host))
goto out;
timeout = jiffies + msecs_to_jiffies(MMC_CORE_TIMEOUT_MS);
do {
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SEND_STATUS;
......@@ -1721,8 +1726,19 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
err = -EIO;
goto out;
}
/* Timeout if the device never becomes ready for data and
* never leaves the program state.
*/
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state! %s\n",
mmc_hostname(card->host), __func__);
err = -EIO;
goto out;
}
} while (!(cmd.resp[0] & R1_READY_FOR_DATA) ||
R1_CURRENT_STATE(cmd.resp[0]) == R1_STATE_PRG);
(R1_CURRENT_STATE(cmd.resp[0]) == R1_STATE_PRG));
out:
return err;
}
......@@ -1942,6 +1958,20 @@ int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
}
EXPORT_SYMBOL(mmc_set_blocklen);
int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
bool is_rel_write)
{
struct mmc_command cmd = {0};
cmd.opcode = MMC_SET_BLOCK_COUNT;
cmd.arg = blockcount & 0x0000FFFF;
if (is_rel_write)
cmd.arg |= 1 << 31;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
return mmc_wait_for_cmd(card->host, &cmd, 5);
}
EXPORT_SYMBOL(mmc_set_blockcount);
static void mmc_hw_reset_for_init(struct mmc_host *host)
{
if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
......
drivers/mmc/core/debugfs.c
View file @ 11b84c58
......@@ -144,6 +144,22 @@ static int mmc_ios_show(struct seq_file *s, void *data)
}
seq_printf(s, "timing spec:\t%u (%s)\n", ios->timing, str);
switch (ios->signal_voltage) {
case MMC_SIGNAL_VOLTAGE_330:
str = "3.30 V";
break;
case MMC_SIGNAL_VOLTAGE_180:
str = "1.80 V";
break;
case MMC_SIGNAL_VOLTAGE_120:
str = "1.20 V";
break;
default:
str = "invalid";
break;
}
seq_printf(s, "signal voltage:\t%u (%s)\n", ios->chip_select, str);
return 0;
}
......
drivers/mmc/core/mmc.c
View file @ 11b84c58
......@@ -239,7 +239,7 @@ static void mmc_select_card_type(struct mmc_card *card)
{
struct mmc_host *host = card->host;
u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK;
unsigned int caps = host->caps, caps2 = host->caps2;
u32 caps = host->caps, caps2 = host->caps2;
unsigned int hs_max_dtr = 0;
if (card_type & EXT_CSD_CARD_TYPE_26)
......@@ -491,6 +491,17 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
/*
* RPMB regions are defined in multiples of 128K.
*/
card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT];
if (ext_csd[EXT_CSD_RPMB_MULT]) {
mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17,
EXT_CSD_PART_CONFIG_ACC_RPMB,
"rpmb", 0, false,
MMC_BLK_DATA_AREA_RPMB);
}
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
......@@ -615,6 +626,8 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
card->ext_csd.enhanced_area_offset);
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
......@@ -630,6 +643,8 @@ static struct attribute *mmc_std_attrs[] = {
&dev_attr_serial.attr,
&dev_attr_enhanced_area_offset.attr,
&dev_attr_enhanced_area_size.attr,
&dev_attr_raw_rpmb_size_mult.attr,
&dev_attr_rel_sectors.attr,
NULL,
};
......@@ -1051,6 +1066,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (mmc_card_highspeed(card) || mmc_card_hs200(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
if (mmc_card_highspeed(card) && (max_dtr > 52000000))
max_dtr = 52000000;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
......
drivers/mmc/core/mmc_ops.c
View file @ 11b84c58
......@@ -21,6 +21,8 @@
#include "core.h"
#include "mmc_ops.h"
#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card)
{
int err;
......@@ -409,6 +411,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
{
int err;
struct mmc_command cmd = {0};
unsigned long timeout;
u32 status;
BUG_ON(!card);
......@@ -437,6 +440,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
return 0;
/* Must check status to be sure of no errors */
timeout = jiffies + msecs_to_jiffies(MMC_OPS_TIMEOUT_MS);
do {
err = mmc_send_status(card, &status);
if (err)
......@@ -445,6 +449,13 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
break;
if (mmc_host_is_spi(card->host))
break;
/* Timeout if the device never leaves the program state. */
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state! %s\n",
mmc_hostname(card->host), __func__);
return -ETIMEDOUT;
}
} while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
if (mmc_host_is_spi(card->host)) {
......
drivers/mmc/core/sdio_bus.c
View file @ 11b84c58
......@@ -193,7 +193,21 @@ static int sdio_bus_remove(struct device *dev)
}
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
static int pm_no_operation(struct device *dev)
{
/*
* Prevent the PM core from calling SDIO device drivers' suspend
* callback routines, which it is not supposed to do, by using this
* empty function as the bus type suspend callaback for SDIO.
*/
return 0;
}
#endif
static const struct dev_pm_ops sdio_bus_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_no_operation, pm_no_operation)
SET_RUNTIME_PM_OPS(
pm_generic_runtime_suspend,
pm_generic_runtime_resume,
......@@ -258,8 +272,7 @@ static void sdio_release_func(struct device *dev)
sdio_free_func_cis(func);
if (func->info)
kfree(func->info);
kfree(func->info);
kfree(func);
}
......
drivers/mmc/core/sdio_io.c
View file @ 11b84c58
......@@ -188,8 +188,7 @@ EXPORT_SYMBOL_GPL(sdio_set_block_size);
*/
static inline unsigned int sdio_max_byte_size(struct sdio_func *func)
{
unsigned mval = min(func->card->host->max_seg_size,
func->card->host->max_blk_size);
unsigned mval = func->card->host->max_blk_size;
if (mmc_blksz_for_byte_mode(func->card))
mval = min(mval, func->cur_blksize);
......@@ -311,11 +310,8 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
/* Do the bulk of the transfer using block mode (if supported). */
if (func->card->cccr.multi_block && (size > sdio_max_byte_size(func))) {
/* Blocks per command is limited by host count, host transfer
* size (we only use a single sg entry) and the maximum for
* IO_RW_EXTENDED of 511 blocks. */
max_blocks = min(func->card->host->max_blk_count,
func->card->host->max_seg_size / func->cur_blksize);
max_blocks = min(max_blocks, 511u);
* size and the maximum for IO_RW_EXTENDED of 511 blocks. */
max_blocks = min(func->card->host->max_blk_count, 511u);
while (remainder >= func->cur_blksize) {
unsigned blocks;
......
drivers/mmc/core/sdio_ops.c
View file @ 11b84c58
......@@ -124,7 +124,10 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
struct scatterlist sg, *sg_ptr;
struct sg_table sgtable;
unsigned int nents, left_size, i;
unsigned int seg_size = card->host->max_seg_size;
BUG_ON(!card);
BUG_ON(fn > 7);
......@@ -152,15 +155,36 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
/* Code in host drivers/fwk assumes that "blocks" always is >=1 */
data.blocks = blocks ? blocks : 1;
data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
data.sg = &sg;
data.sg_len = 1;
sg_init_one(&sg, buf, data.blksz * data.blocks);
left_size = data.blksz * data.blocks;
nents = (left_size - 1) / seg_size + 1;
if (nents > 1) {
if (sg_alloc_table(&sgtable, nents, GFP_KERNEL))
return -ENOMEM;
data.sg = sgtable.sgl;
data.sg_len = nents;
for_each_sg(data.sg, sg_ptr, data.sg_len, i) {
sg_set_page(sg_ptr, virt_to_page(buf + (i * seg_size)),
min(seg_size, left_size),
offset_in_page(buf + (i * seg_size)));
left_size = left_size - seg_size;
}
} else {
data.sg = &sg;
data.sg_len = 1;
sg_init_one(&sg, buf, left_size);
}
mmc_set_data_timeout(&data, card);
mmc_wait_for_req(card->host, &mrq);
if (nents > 1)
sg_free_table(&sgtable);
if (cmd.error)
return cmd.error;
if (data.error)
......
drivers/mmc/core/slot-gpio.c
View file @ 11b84c58
......@@ -27,7 +27,13 @@ struct mmc_gpio {
static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
{
/* Schedule a card detection after a debounce timeout */
mmc_detect_change(dev_id, msecs_to_jiffies(100));
struct mmc_host *host = dev_id;
if (host->ops->card_event)
host->ops->card_event(host);
mmc_detect_change(host, msecs_to_jiffies(200));
return IRQ_HANDLED;
}
......
drivers/mmc/host/Kconfig
View file @ 11b84c58
......@@ -270,26 +270,8 @@ config MMC_AU1X
If unsure, say N.
choice
prompt "Atmel SD/MMC Driver"
depends on AVR32 || ARCH_AT91
default MMC_ATMELMCI if AVR32
help
Choose which driver to use for the Atmel MCI Silicon
config MMC_AT91
tristate "AT91 SD/MMC Card Interface support (DEPRECATED)"
depends on ARCH_AT91
help
This selects the AT91 MCI controller. This driver will
be removed soon (for more information have a look to
Documentation/feature-removal-schedule.txt). Please use
MMC_ATMEL_MCI.
If unsure, say N.
config MMC_ATMELMCI
tristate "Atmel Multimedia Card Interface support"
tristate "Atmel SD/MMC Driver (Multimedia Card Interface)"
depends on AVR32 || ARCH_AT91
help
This selects the Atmel Multimedia Card Interface driver. If
......@@ -298,8 +280,6 @@ config MMC_ATMELMCI
If unsure, say N.
endchoice
config MMC_ATMELMCI_DMA
bool "Atmel MCI DMA support"
depends on MMC_ATMELMCI && (AVR32 || ARCH_AT91SAM9G45) && DMA_ENGINE
......@@ -621,3 +601,14 @@ config MMC_USHC
Note: These controllers only support SDIO cards and do not
support MMC or SD memory cards.
config MMC_WMT
tristate "Wondermedia SD/MMC Host Controller support"
depends on ARCH_VT8500
default y
help
This selects support for the SD/MMC Host Controller on
Wondermedia WM8505/WM8650 based SoCs.
To compile this driver as a module, choose M here: the
module will be called wmt-sdmmc.
drivers/mmc/host/Makefile
View file @ 11b84c58
......@@ -17,7 +17,6 @@ obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o
obj-$(CONFIG_MMC_AT91) += at91_mci.o
obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
obj-$(CONFIG_MMC_MSM) += msm_sdcc.o
......@@ -45,6 +44,7 @@ obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o
obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
obj-$(CONFIG_MMC_VUB300) += vub300.o
obj-$(CONFIG_MMC_USHC) += ushc.o
obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
......
drivers/mmc/host/at91_mci.c deleted 100644 → 0
View file @ 29594404
/*
* linux/drivers/mmc/host/at91_mci.c - ATMEL AT91 MCI Driver
*
* Copyright (C) 2005 Cougar Creek Computing Devices Ltd, All Rights Reserved
*
* Copyright (C) 2006 Malcolm Noyes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
This is the AT91 MCI driver that has been tested with both MMC cards
and SD-cards. Boards that support write protect are now supported.
The CCAT91SBC001 board does not support SD cards.
The three entry points are at91_mci_request, at91_mci_set_ios
and at91_mci_get_ro.
SET IOS
This configures the device to put it into the correct mode and clock speed
required.
MCI REQUEST
MCI request processes the commands sent in the mmc_request structure. This
can consist of a processing command and a stop command in the case of
multiple block transfers.
There are three main types of request, commands, reads and writes.
Commands are straight forward. The command is submitted to the controller and
the request function returns. When the controller generates an interrupt to indicate
the command is finished, the response to the command are read and the mmc_request_done
function called to end the request.
Reads and writes work in a similar manner to normal commands but involve the PDC (DMA)
controller to manage the transfers.
A read is done from the controller directly to the scatterlist passed in from the request.
Due to a bug in the AT91RM9200 controller, when a read is completed, all the words are byte
swapped in the scatterlist buffers. AT91SAM926x are not affected by this bug.
The sequence of read interrupts is: ENDRX, RXBUFF, CMDRDY
A write is slightly different in that the bytes to write are read from the scatterlist
into a dma memory buffer (this is in case the source buffer should be read only). The
entire write buffer is then done from this single dma memory buffer.
The sequence of write interrupts is: ENDTX, TXBUFE, NOTBUSY, CMDRDY
GET RO
Gets the status of the write protect pin, if available.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/atmel_pdc.h>
#include <linux/gfp.h>
#include <linux/highmem.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/gpio.h>
#include <mach/board.h>
#include <mach/cpu.h>
#include "at91_mci.h"
#define DRIVER_NAME "at91_mci"
static inline int at91mci_is_mci1rev2xx(void)
{
return ( cpu_is_at91sam9260()
|| cpu_is_at91sam9263()
|| cpu_is_at91sam9rl()
|| cpu_is_at91sam9g10()
|| cpu_is_at91sam9g20()
);
}
#define FL_SENT_COMMAND (1 << 0)
#define FL_SENT_STOP (1 << 1)
#define AT91_MCI_ERRORS (AT91_MCI_RINDE | AT91_MCI_RDIRE | AT91_MCI_RCRCE \
| AT91_MCI_RENDE | AT91_MCI_RTOE | AT91_MCI_DCRCE \
| AT91_MCI_DTOE | AT91_MCI_OVRE | AT91_MCI_UNRE)
#define at91_mci_read(host, reg) __raw_readl((host)->baseaddr + (reg))
#define at91_mci_write(host, reg, val) __raw_writel((val), (host)->baseaddr + (reg))
#define MCI_BLKSIZE 512
#define MCI_MAXBLKSIZE 4095
#define MCI_BLKATONCE 256
#define MCI_BUFSIZE (MCI_BLKSIZE * MCI_BLKATONCE)
/*
* Low level type for this driver
*/
struct at91mci_host
{
struct mmc_host *mmc;
struct mmc_command *cmd;
struct mmc_request *request;
void __iomem *baseaddr;
int irq;
struct at91_mmc_data *board;
int present;
struct clk *mci_clk;
/*
* Flag indicating when the command has been sent. This is used to
* work out whether or not to send the stop
*/
unsigned int flags;
/* flag for current bus settings */
u32 bus_mode;
/* DMA buffer used for transmitting */
unsigned int* buffer;
dma_addr_t physical_address;
unsigned int total_length;
/* Latest in the scatterlist that has been enabled for transfer, but not freed */
int in_use_index;
/* Latest in the scatterlist that has been enabled for transfer */
int transfer_index;
/* Timer for timeouts */
struct timer_list timer;
};
/*
* Reset the controller and restore most of the state
*/
static void at91_reset_host(struct at91mci_host *host)
{
unsigned long flags;
u32 mr;
u32 sdcr;
u32 dtor;
u32 imr;
local_irq_save(flags);
imr = at91_mci_read(host, AT91_MCI_IMR);
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
/* save current state */
mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff;
sdcr = at91_mci_read(host, AT91_MCI_SDCR);
dtor = at91_mci_read(host, AT91_MCI_DTOR);
/* reset the controller */
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS | AT91_MCI_SWRST);
/* restore state */
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN);
at91_mci_write(host, AT91_MCI_MR, mr);
at91_mci_write(host, AT91_MCI_SDCR, sdcr);
at91_mci_write(host, AT91_MCI_DTOR, dtor);
at91_mci_write(host, AT91_MCI_IER, imr);
/* make sure sdio interrupts will fire */
at91_mci_read(host, AT91_MCI_SR);
local_irq_restore(flags);
}
static void at91_timeout_timer(unsigned long data)
{
struct at91mci_host *host;
host = (struct at91mci_host *)data;
if (host->request) {
dev_err(host->mmc->parent, "Timeout waiting end of packet\n");
if (host->cmd && host->cmd->data) {
host->cmd->data->error = -ETIMEDOUT;
} else {
if (host->cmd)
host->cmd->error = -ETIMEDOUT;
else
host->request->cmd->error = -ETIMEDOUT;
}
at91_reset_host(host);
mmc_request_done(host->mmc, host->request);
}
}
/*
* Copy from sg to a dma block - used for transfers
*/
static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data)
{
unsigned int len, i, size;
unsigned *dmabuf = host->buffer;
size = data->blksz * data->blocks;
len = data->sg_len;
/* MCI1 rev2xx Data Write Operation and number of bytes erratum */
if (at91mci_is_mci1rev2xx())
if (host->total_length == 12)
memset(dmabuf, 0, 12);
/*
* Just loop through all entries. Size might not
* be the entire list though so make sure that
* we do not transfer too much.
*/
for (i = 0; i < len; i++) {
struct scatterlist *sg;
int amount;
unsigned int *sgbuffer;
sg = &data->sg[i];
sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset;
amount = min(size, sg->length);
size -= amount;
if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */
int index;
for (index = 0; index < (amount / 4); index++)
*dmabuf++ = swab32(sgbuffer[index]);
} else {
char *tmpv = (char *)dmabuf;
memcpy(tmpv, sgbuffer, amount);
tmpv += amount;
dmabuf = (unsigned *)tmpv;
}
kunmap_atomic(sgbuffer);
if (size == 0)
break;
}
/*
* Check that we didn't get a request to transfer
* more data than can fit into the SG list.
*/
BUG_ON(size != 0);
}
/*
* Handle after a dma read
*/
static void at91_mci_post_dma_read(struct at91mci_host *host)
{
struct mmc_command *cmd;
struct mmc_data *data;
unsigned int len, i, size;
unsigned *dmabuf = host->buffer;
pr_debug("post dma read\n");
cmd = host->cmd;
if (!cmd) {
pr_debug("no command\n");
return;
}
data = cmd->data;
if (!data) {
pr_debug("no data\n");
return;
}
size = data->blksz * data->blocks;
len = data->sg_len;
at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_ENDRX);
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_RXBUFF);
for (i = 0; i < len; i++) {
struct scatterlist *sg;
int amount;
unsigned int *sgbuffer;
sg = &data->sg[i];
sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset;
amount = min(size, sg->length);
size -= amount;
if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */
int index;
for (index = 0; index < (amount / 4); index++)
sgbuffer[index] = swab32(*dmabuf++);
} else {
char *tmpv = (char *)dmabuf;
memcpy(sgbuffer, tmpv, amount);
tmpv += amount;
dmabuf = (unsigned *)tmpv;
}
flush_kernel_dcache_page(sg_page(sg));
kunmap_atomic(sgbuffer);
data->bytes_xfered += amount;
if (size == 0)
break;
}
pr_debug("post dma read done\n");
}
/*
* Handle transmitted data
*/
static void at91_mci_handle_transmitted(struct at91mci_host *host)
{
struct mmc_command *cmd;
struct mmc_data *data;
pr_debug("Handling the transmit\n");
/* Disable the transfer */
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
/* Now wait for cmd ready */
at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE);
cmd = host->cmd;
if (!cmd) return;
data = cmd->data;
if (!data) return;
if (cmd->data->blocks > 1) {
pr_debug("multiple write : wait for BLKE...\n");
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE);
} else
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
}
/*
* Update bytes transfered count during a write operation
*/
static void at91_mci_update_bytes_xfered(struct at91mci_host *host)
{
struct mmc_data *data;
/* always deal with the effective request (and not the current cmd) */
if (host->request->cmd && host->request->cmd->error != 0)
return;
if (host->request->data) {
data = host->request->data;
if (data->flags & MMC_DATA_WRITE) {
/* card is in IDLE mode now */
pr_debug("-> bytes_xfered %d, total_length = %d\n",
data->bytes_xfered, host->total_length);
data->bytes_xfered = data->blksz * data->blocks;
}
}
}
/*Handle after command sent ready*/
static int at91_mci_handle_cmdrdy(struct at91mci_host *host)
{
if (!host->cmd)
return 1;
else if (!host->cmd->data) {
if (host->flags & FL_SENT_STOP) {
/*After multi block write, we must wait for NOTBUSY*/
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
} else return 1;
} else if (host->cmd->data->flags & MMC_DATA_WRITE) {
/*After sendding multi-block-write command, start DMA transfer*/
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE | AT91_MCI_BLKE);
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
}
/* command not completed, have to wait */
return 0;
}
/*
* Enable the controller
*/
static void at91_mci_enable(struct at91mci_host *host)
{
unsigned int mr;
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN);
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC);
mr = AT91_MCI_PDCMODE | 0x34a;
if (at91mci_is_mci1rev2xx())
mr |= AT91_MCI_RDPROOF | AT91_MCI_WRPROOF;
at91_mci_write(host, AT91_MCI_MR, mr);
/* use Slot A or B (only one at same time) */
at91_mci_write(host, AT91_MCI_SDCR, host->board->slot_b);
}
/*
* Disable the controller
*/
static void at91_mci_disable(struct at91mci_host *host)
{
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS | AT91_MCI_SWRST);
}
/*
* Send a command
*/
static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd)
{
unsigned int cmdr, mr;
unsigned int block_length;
struct mmc_data *data = cmd->data;
unsigned int blocks;
unsigned int ier = 0;
host->cmd = cmd;
/* Needed for leaving busy state before CMD1 */
if ((at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_RTOE) && (cmd->opcode == 1)) {
pr_debug("Clearing timeout\n");
at91_mci_write(host, AT91_MCI_ARGR, 0);
at91_mci_write(host, AT91_MCI_CMDR, AT91_MCI_OPDCMD);
while (!(at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_CMDRDY)) {
/* spin */
pr_debug("Clearing: SR = %08X\n", at91_mci_read(host, AT91_MCI_SR));
}
}
cmdr = cmd->opcode;
if (mmc_resp_type(cmd) == MMC_RSP_NONE)
cmdr |= AT91_MCI_RSPTYP_NONE;
else {
/* if a response is expected then allow maximum response latancy */
cmdr |= AT91_MCI_MAXLAT;
/* set 136 bit response for R2, 48 bit response otherwise */
if (mmc_resp_type(cmd) == MMC_RSP_R2)
cmdr |= AT91_MCI_RSPTYP_136;
else
cmdr |= AT91_MCI_RSPTYP_48;
}
if (data) {
if (cpu_is_at91rm9200() || cpu_is_at91sam9261()) {
if (data->blksz & 0x3) {
pr_debug("Unsupported block size\n");
cmd->error = -EINVAL;
mmc_request_done(host->mmc, host->request);
return;
}
if (data->flags & MMC_DATA_STREAM) {
pr_debug("Stream commands not supported\n");
cmd->error = -EINVAL;
mmc_request_done(host->mmc, host->request);
return;
}
}
block_length = data->blksz;
blocks = data->blocks;
/* always set data start - also set direction flag for read */
if (data->flags & MMC_DATA_READ)
cmdr |= (AT91_MCI_TRDIR | AT91_MCI_TRCMD_START);
else if (data->flags & MMC_DATA_WRITE)
cmdr |= AT91_MCI_TRCMD_START;
if (cmd->opcode == SD_IO_RW_EXTENDED) {
cmdr |= AT91_MCI_TRTYP_SDIO_BLOCK;
} else {
if (data->flags & MMC_DATA_STREAM)
cmdr |= AT91_MCI_TRTYP_STREAM;
if (data->blocks > 1)
cmdr |= AT91_MCI_TRTYP_MULTIPLE;
}
}
else {
block_length = 0;
blocks = 0;
}
if (host->flags & FL_SENT_STOP)
cmdr |= AT91_MCI_TRCMD_STOP;
if (host->bus_mode == MMC_BUSMODE_OPENDRAIN)
cmdr |= AT91_MCI_OPDCMD;
/*
* Set the arguments and send the command
*/
pr_debug("Sending command %d as %08X, arg = %08X, blocks = %d, length = %d (MR = %08X)\n",
cmd->opcode, cmdr, cmd->arg, blocks, block_length, at91_mci_read(host, AT91_MCI_MR));
if (!data) {
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS | ATMEL_PDC_RXTDIS);
at91_mci_write(host, ATMEL_PDC_RPR, 0);
at91_mci_write(host, ATMEL_PDC_RCR, 0);
at91_mci_write(host, ATMEL_PDC_RNPR, 0);
at91_mci_write(host, ATMEL_PDC_RNCR, 0);
at91_mci_write(host, ATMEL_PDC_TPR, 0);
at91_mci_write(host, ATMEL_PDC_TCR, 0);
at91_mci_write(host, ATMEL_PDC_TNPR, 0);
at91_mci_write(host, ATMEL_PDC_TNCR, 0);
ier = AT91_MCI_CMDRDY;
} else {
/* zero block length and PDC mode */
mr = at91_mci_read(host, AT91_MCI_MR) & 0x5fff;
mr |= (data->blksz & 0x3) ? AT91_MCI_PDCFBYTE : 0;
mr |= (block_length << 16);
mr |= AT91_MCI_PDCMODE;
at91_mci_write(host, AT91_MCI_MR, mr);
if (!(cpu_is_at91rm9200() || cpu_is_at91sam9261()))
at91_mci_write(host, AT91_MCI_BLKR,
AT91_MCI_BLKR_BCNT(blocks) |
AT91_MCI_BLKR_BLKLEN(block_length));
/*
* Disable the PDC controller
*/
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
if (cmdr & AT91_MCI_TRCMD_START) {
data->bytes_xfered = 0;
host->transfer_index = 0;
host->in_use_index = 0;
if (cmdr & AT91_MCI_TRDIR) {
/*
* Handle a read
*/
host->total_length = 0;
at91_mci_write(host, ATMEL_PDC_RPR, host->physical_address);
at91_mci_write(host, ATMEL_PDC_RCR, (data->blksz & 0x3) ?
(blocks * block_length) : (blocks * block_length) / 4);
at91_mci_write(host, ATMEL_PDC_RNPR, 0);
at91_mci_write(host, ATMEL_PDC_RNCR, 0);
ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */;
}
else {
/*
* Handle a write
*/
host->total_length = block_length * blocks;
/*
* MCI1 rev2xx Data Write Operation and
* number of bytes erratum
*/
if (at91mci_is_mci1rev2xx())
if (host->total_length < 12)
host->total_length = 12;
at91_mci_sg_to_dma(host, data);
pr_debug("Transmitting %d bytes\n", host->total_length);
at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address);
at91_mci_write(host, ATMEL_PDC_TCR, (data->blksz & 0x3) ?
host->total_length : host->total_length / 4);
ier = AT91_MCI_CMDRDY;
}
}
}
/*
* Send the command and then enable the PDC - not the other way round as
* the data sheet says
*/
at91_mci_write(host, AT91_MCI_ARGR, cmd->arg);
at91_mci_write(host, AT91_MCI_CMDR, cmdr);
if (cmdr & AT91_MCI_TRCMD_START) {
if (cmdr & AT91_MCI_TRDIR)
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
}
/* Enable selected interrupts */
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_ERRORS | ier);
}
/*
* Process the next step in the request
*/
static void at91_mci_process_next(struct at91mci_host *host)
{
if (!(host->flags & FL_SENT_COMMAND)) {
host->flags |= FL_SENT_COMMAND;
at91_mci_send_command(host, host->request->cmd);
}
else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) {
host->flags |= FL_SENT_STOP;
at91_mci_send_command(host, host->request->stop);
} else {
del_timer(&host->timer);
/* the at91rm9200 mci controller hangs after some transfers,
* and the workaround is to reset it after each transfer.
*/
if (cpu_is_at91rm9200())
at91_reset_host(host);
mmc_request_done(host->mmc, host->request);
}
}
/*
* Handle a command that has been completed
*/
static void at91_mci_completed_command(struct at91mci_host *host, unsigned int status)
{
struct mmc_command *cmd = host->cmd;
struct mmc_data *data = cmd->data;
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0));
cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1));
cmd->resp[2] = at91_mci_read(host, AT91_MCI_RSPR(2));
cmd->resp[3] = at91_mci_read(host, AT91_MCI_RSPR(3));
pr_debug("Status = %08X/%08x [%08X %08X %08X %08X]\n",
status, at91_mci_read(host, AT91_MCI_SR),
cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
if (status & AT91_MCI_ERRORS) {
if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) {
cmd->error = 0;
}
else {
if (status & (AT91_MCI_DTOE | AT91_MCI_DCRCE)) {
if (data) {
if (status & AT91_MCI_DTOE)
data->error = -ETIMEDOUT;
else if (status & AT91_MCI_DCRCE)
data->error = -EILSEQ;
}
} else {
if (status & AT91_MCI_RTOE)
cmd->error = -ETIMEDOUT;
else if (status & AT91_MCI_RCRCE)
cmd->error = -EILSEQ;
else
cmd->error = -EIO;
}
pr_debug("Error detected and set to %d/%d (cmd = %d, retries = %d)\n",
cmd->error, data ? data->error : 0,
cmd->opcode, cmd->retries);
}
}
else
cmd->error = 0;
at91_mci_process_next(host);
}
/*
* Handle an MMC request
*/
static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct at91mci_host *host = mmc_priv(mmc);
host->request = mrq;
host->flags = 0;
/* more than 1s timeout needed with slow SD cards */
mod_timer(&host->timer, jiffies + msecs_to_jiffies(2000));
at91_mci_process_next(host);
}
/*
* Set the IOS
*/
static void at91_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
int clkdiv;
struct at91mci_host *host = mmc_priv(mmc);
unsigned long at91_master_clock = clk_get_rate(host->mci_clk);
host->bus_mode = ios->bus_mode;
if (ios->clock == 0) {
/* Disable the MCI controller */
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS);
clkdiv = 0;
}
else {
/* Enable the MCI controller */
at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN);
if ((at91_master_clock % (ios->clock * 2)) == 0)
clkdiv = ((at91_master_clock / ios->clock) / 2) - 1;
else
clkdiv = (at91_master_clock / ios->clock) / 2;
pr_debug("clkdiv = %d. mcck = %ld\n", clkdiv,
at91_master_clock / (2 * (clkdiv + 1)));
}
if (ios->bus_width == MMC_BUS_WIDTH_4 && host->board->wire4) {
pr_debug("MMC: Setting controller bus width to 4\n");
at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) | AT91_MCI_SDCBUS);
}
else {
pr_debug("MMC: Setting controller bus width to 1\n");
at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) & ~AT91_MCI_SDCBUS);
}
/* Set the clock divider */
at91_mci_write(host, AT91_MCI_MR, (at91_mci_read(host, AT91_MCI_MR) & ~AT91_MCI_CLKDIV) | clkdiv);
/* maybe switch power to the card */
if (gpio_is_valid(host->board->vcc_pin)) {
switch (ios->power_mode) {
case MMC_POWER_OFF:
gpio_set_value(host->board->vcc_pin, 0);
break;
case MMC_POWER_UP:
gpio_set_value(host->board->vcc_pin, 1);
break;
case MMC_POWER_ON:
break;
default:
WARN_ON(1);
}
}
}
/*
* Handle an interrupt
*/
static irqreturn_t at91_mci_irq(int irq, void *devid)
{
struct at91mci_host *host = devid;
int completed = 0;
unsigned int int_status, int_mask;
int_status = at91_mci_read(host, AT91_MCI_SR);
int_mask = at91_mci_read(host, AT91_MCI_IMR);
pr_debug("MCI irq: status = %08X, %08X, %08X\n", int_status, int_mask,
int_status & int_mask);
int_status = int_status & int_mask;
if (int_status & AT91_MCI_ERRORS) {
completed = 1;
if (int_status & AT91_MCI_UNRE)
pr_debug("MMC: Underrun error\n");
if (int_status & AT91_MCI_OVRE)
pr_debug("MMC: Overrun error\n");
if (int_status & AT91_MCI_DTOE)
pr_debug("MMC: Data timeout\n");
if (int_status & AT91_MCI_DCRCE)
pr_debug("MMC: CRC error in data\n");
if (int_status & AT91_MCI_RTOE)
pr_debug("MMC: Response timeout\n");
if (int_status & AT91_MCI_RENDE)
pr_debug("MMC: Response end bit error\n");
if (int_status & AT91_MCI_RCRCE)
pr_debug("MMC: Response CRC error\n");
if (int_status & AT91_MCI_RDIRE)
pr_debug("MMC: Response direction error\n");
if (int_status & AT91_MCI_RINDE)
pr_debug("MMC: Response index error\n");
} else {
/* Only continue processing if no errors */
if (int_status & AT91_MCI_TXBUFE) {
pr_debug("TX buffer empty\n");
at91_mci_handle_transmitted(host);
}
if (int_status & AT91_MCI_ENDRX) {
pr_debug("ENDRX\n");
at91_mci_post_dma_read(host);
}
if (int_status & AT91_MCI_RXBUFF) {
pr_debug("RX buffer full\n");
at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_RXBUFF | AT91_MCI_ENDRX);
completed = 1;
}
if (int_status & AT91_MCI_ENDTX)
pr_debug("Transmit has ended\n");
if (int_status & AT91_MCI_NOTBUSY) {
pr_debug("Card is ready\n");
at91_mci_update_bytes_xfered(host);
completed = 1;
}
if (int_status & AT91_MCI_DTIP)
pr_debug("Data transfer in progress\n");
if (int_status & AT91_MCI_BLKE) {
pr_debug("Block transfer has ended\n");
if (host->request->data && host->request->data->blocks > 1) {
/* multi block write : complete multi write
* command and send stop */
completed = 1;
} else {
at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
}
}
if (int_status & AT91_MCI_SDIOIRQA)
mmc_signal_sdio_irq(host->mmc);
if (int_status & AT91_MCI_SDIOIRQB)
mmc_signal_sdio_irq(host->mmc);
if (int_status & AT91_MCI_TXRDY)
pr_debug("Ready to transmit\n");
if (int_status & AT91_MCI_RXRDY)
pr_debug("Ready to receive\n");
if (int_status & AT91_MCI_CMDRDY) {
pr_debug("Command ready\n");
completed = at91_mci_handle_cmdrdy(host);
}
}
if (completed) {
pr_debug("Completed command\n");
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
at91_mci_completed_command(host, int_status);
} else
at91_mci_write(host, AT91_MCI_IDR, int_status & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
return IRQ_HANDLED;
}
static irqreturn_t at91_mmc_det_irq(int irq, void *_host)
{
struct at91mci_host *host = _host;
int present;
/* entering this ISR means that we have configured det_pin:
* we can use its value in board structure */
present = !gpio_get_value(host->board->det_pin);
/*
* we expect this irq on both insert and remove,
* and use a short delay to debounce.
*/
if (present != host->present) {
host->present = present;
pr_debug("%s: card %s\n", mmc_hostname(host->mmc),
present ? "insert" : "remove");
if (!present) {
pr_debug("****** Resetting SD-card bus width ******\n");
at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) & ~AT91_MCI_SDCBUS);
}
/* 0.5s needed because of early card detect switch firing */
mmc_detect_change(host->mmc, msecs_to_jiffies(500));
}
return IRQ_HANDLED;
}
static int at91_mci_get_ro(struct mmc_host *mmc)
{
struct at91mci_host *host = mmc_priv(mmc);
if (gpio_is_valid(host->board->wp_pin))
return !!gpio_get_value(host->board->wp_pin);
/*
* Board doesn't support read only detection; let the mmc core
* decide what to do.
*/
return -ENOSYS;
}
static void at91_mci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct at91mci_host *host = mmc_priv(mmc);
pr_debug("%s: sdio_irq %c : %s\n", mmc_hostname(host->mmc),
host->board->slot_b ? 'B':'A', enable ? "enable" : "disable");
at91_mci_write(host, enable ? AT91_MCI_IER : AT91_MCI_IDR,
host->board->slot_b ? AT91_MCI_SDIOIRQB : AT91_MCI_SDIOIRQA);
}
static const struct mmc_host_ops at91_mci_ops = {
.request = at91_mci_request,
.set_ios = at91_mci_set_ios,
.get_ro = at91_mci_get_ro,
.enable_sdio_irq = at91_mci_enable_sdio_irq,
};
/*
* Probe for the device
*/
static int __init at91_mci_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
struct at91mci_host *host;
struct resource *res;
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENXIO;
if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME))
return -EBUSY;
mmc = mmc_alloc_host(sizeof(struct at91mci_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "couldn't allocate mmc host\n");
goto fail6;
}
mmc->ops = &at91_mci_ops;
mmc->f_min = 375000;
mmc->f_max = 25000000;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
mmc->caps = 0;
mmc->max_blk_size = MCI_MAXBLKSIZE;
mmc->max_blk_count = MCI_BLKATONCE;
mmc->max_req_size = MCI_BUFSIZE;
mmc->max_segs = MCI_BLKATONCE;
mmc->max_seg_size = MCI_BUFSIZE;
host = mmc_priv(mmc);
host->mmc = mmc;
host->bus_mode = 0;
host->board = pdev->dev.platform_data;
if (host->board->wire4) {
if (at91mci_is_mci1rev2xx())
mmc->caps |= MMC_CAP_4_BIT_DATA;
else
dev_warn(&pdev->dev, "4 wire bus mode not supported"
" - using 1 wire\n");
}
host->buffer = dma_alloc_coherent(&pdev->dev, MCI_BUFSIZE,
&host->physical_address, GFP_KERNEL);
if (!host->buffer) {
ret = -ENOMEM;
dev_err(&pdev->dev, "Can't allocate transmit buffer\n");
goto fail5;
}
/* Add SDIO capability when available */
if (at91mci_is_mci1rev2xx()) {
/* at91mci MCI1 rev2xx sdio interrupt erratum */
if (host->board->wire4 || !host->board->slot_b)
mmc->caps |= MMC_CAP_SDIO_IRQ;
}
/*
* Reserve GPIOs ... board init code makes sure these pins are set
* up as GPIOs with the right direction (input, except for vcc)
*/
if (gpio_is_valid(host->board->det_pin)) {
ret = gpio_request(host->board->det_pin, "mmc_detect");
if (ret < 0) {
dev_dbg(&pdev->dev, "couldn't claim card detect pin\n");
goto fail4b;
}
}
if (gpio_is_valid(host->board->wp_pin)) {
ret = gpio_request(host->board->wp_pin, "mmc_wp");
if (ret < 0) {
dev_dbg(&pdev->dev, "couldn't claim wp sense pin\n");
goto fail4;
}
}
if (gpio_is_valid(host->board->vcc_pin)) {
ret = gpio_request(host->board->vcc_pin, "mmc_vcc");
if (ret < 0) {
dev_dbg(&pdev->dev, "couldn't claim vcc switch pin\n");
goto fail3;
}
}
/*
* Get Clock
*/
host->mci_clk = clk_get(&pdev->dev, "mci_clk");
if (IS_ERR(host->mci_clk)) {
ret = -ENODEV;
dev_dbg(&pdev->dev, "no mci_clk?\n");
goto fail2;
}
/*
* Map I/O region
*/
host->baseaddr = ioremap(res->start, resource_size(res));
if (!host->baseaddr) {
ret = -ENOMEM;
goto fail1;
}
/*
* Reset hardware
*/
clk_enable(host->mci_clk); /* Enable the peripheral clock */
at91_mci_disable(host);
at91_mci_enable(host);
/*
* Allocate the MCI interrupt
*/
host->irq = platform_get_irq(pdev, 0);
ret = request_irq(host->irq, at91_mci_irq, IRQF_SHARED,
mmc_hostname(mmc), host);
if (ret) {
dev_dbg(&pdev->dev, "request MCI interrupt failed\n");
goto fail0;
}
setup_timer(&host->timer, at91_timeout_timer, (unsigned long)host);
platform_set_drvdata(pdev, mmc);
/*
* Add host to MMC layer
*/
if (gpio_is_valid(host->board->det_pin)) {
host->present = !gpio_get_value(host->board->det_pin);
}
else
host->present = -1;
mmc_add_host(mmc);
/*
* monitor card insertion/removal if we can
*/
if (gpio_is_valid(host->board->det_pin)) {
ret = request_irq(gpio_to_irq(host->board->det_pin),
at91_mmc_det_irq, 0, mmc_hostname(mmc), host);
if (ret)
dev_warn(&pdev->dev, "request MMC detect irq failed\n");
else
device_init_wakeup(&pdev->dev, 1);
}
pr_debug("Added MCI driver\n");
return 0;
fail0:
clk_disable(host->mci_clk);
iounmap(host->baseaddr);
fail1:
clk_put(host->mci_clk);
fail2:
if (gpio_is_valid(host->board->vcc_pin))
gpio_free(host->board->vcc_pin);
fail3:
if (gpio_is_valid(host->board->wp_pin))
gpio_free(host->board->wp_pin);
fail4:
if (gpio_is_valid(host->board->det_pin))
gpio_free(host->board->det_pin);
fail4b:
if (host->buffer)
dma_free_coherent(&pdev->dev, MCI_BUFSIZE,
host->buffer, host->physical_address);
fail5:
mmc_free_host(mmc);
fail6:
release_mem_region(res->start, resource_size(res));
dev_err(&pdev->dev, "probe failed, err %d\n", ret);
return ret;
}
/*
* Remove a device
*/
static int __exit at91_mci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct at91mci_host *host;
struct resource *res;
if (!mmc)
return -1;
host = mmc_priv(mmc);
if (host->buffer)
dma_free_coherent(&pdev->dev, MCI_BUFSIZE,
host->buffer, host->physical_address);
if (gpio_is_valid(host->board->det_pin)) {
if (device_can_wakeup(&pdev->dev))
free_irq(gpio_to_irq(host->board->det_pin), host);
device_init_wakeup(&pdev->dev, 0);
gpio_free(host->board->det_pin);
}
at91_mci_disable(host);
del_timer_sync(&host->timer);
mmc_remove_host(mmc);
free_irq(host->irq, host);
clk_disable(host->mci_clk); /* Disable the peripheral clock */
clk_put(host->mci_clk);
if (gpio_is_valid(host->board->vcc_pin))
gpio_free(host->board->vcc_pin);
if (gpio_is_valid(host->board->wp_pin))
gpio_free(host->board->wp_pin);
iounmap(host->baseaddr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
mmc_free_host(mmc);
platform_set_drvdata(pdev, NULL);
pr_debug("MCI Removed\n");
return 0;
}
#ifdef CONFIG_PM
static int at91_mci_suspend(struct platform_device *pdev, pm_message_t state)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
if (gpio_is_valid(host->board->det_pin) && device_may_wakeup(&pdev->dev))
enable_irq_wake(host->board->det_pin);
if (mmc)
ret = mmc_suspend_host(mmc);
return ret;
}
static int at91_mci_resume(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
if (gpio_is_valid(host->board->det_pin) && device_may_wakeup(&pdev->dev))
disable_irq_wake(host->board->det_pin);
if (mmc)
ret = mmc_resume_host(mmc);
return ret;
}
#else
#define at91_mci_suspend NULL
#define at91_mci_resume NULL
#endif
static struct platform_driver at91_mci_driver = {
.remove = __exit_p(at91_mci_remove),
.suspend = at91_mci_suspend,
.resume = at91_mci_resume,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
};
static int __init at91_mci_init(void)
{
return platform_driver_probe(&at91_mci_driver, at91_mci_probe);
}
static void __exit at91_mci_exit(void)
{
platform_driver_unregister(&at91_mci_driver);
}
module_init(at91_mci_init);
module_exit(at91_mci_exit);
MODULE_DESCRIPTION("AT91 Multimedia Card Interface driver");
MODULE_AUTHOR("Nick Randell");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:at91_mci");
drivers/mmc/host/at91_mci.h deleted 100644 → 0
View file @ 29594404
/*
* drivers/mmc/host/at91_mci.h
*
* Copyright (C) 2005 Ivan Kokshaysky
* Copyright (C) SAN People
*
* MultiMedia Card Interface (MCI) registers.
* Based on AT91RM9200 datasheet revision F.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_MCI_H
#define AT91_MCI_H
#define AT91_MCI_CR 0x00 /* Control Register */
#define AT91_MCI_MCIEN (1 << 0) /* Multi-Media Interface Enable */
#define AT91_MCI_MCIDIS (1 << 1) /* Multi-Media Interface Disable */
#define AT91_MCI_PWSEN (1 << 2) /* Power Save Mode Enable */
#define AT91_MCI_PWSDIS (1 << 3) /* Power Save Mode Disable */
#define AT91_MCI_SWRST (1 << 7) /* Software Reset */
#define AT91_MCI_MR 0x04 /* Mode Register */
#define AT91_MCI_CLKDIV (0xff << 0) /* Clock Divider */
#define AT91_MCI_PWSDIV (7 << 8) /* Power Saving Divider */
#define AT91_MCI_RDPROOF (1 << 11) /* Read Proof Enable [SAM926[03] only] */
#define AT91_MCI_WRPROOF (1 << 12) /* Write Proof Enable [SAM926[03] only] */
#define AT91_MCI_PDCFBYTE (1 << 13) /* PDC Force Byte Transfer [SAM926[03] only] */
#define AT91_MCI_PDCPADV (1 << 14) /* PDC Padding Value */
#define AT91_MCI_PDCMODE (1 << 15) /* PDC-orientated Mode */
#define AT91_MCI_BLKLEN (0xfff << 18) /* Data Block Length */
#define AT91_MCI_DTOR 0x08 /* Data Timeout Register */
#define AT91_MCI_DTOCYC (0xf << 0) /* Data Timeout Cycle Number */
#define AT91_MCI_DTOMUL (7 << 4) /* Data Timeout Multiplier */
#define AT91_MCI_DTOMUL_1 (0 << 4)
#define AT91_MCI_DTOMUL_16 (1 << 4)
#define AT91_MCI_DTOMUL_128 (2 << 4)
#define AT91_MCI_DTOMUL_256 (3 << 4)
#define AT91_MCI_DTOMUL_1K (4 << 4)
#define AT91_MCI_DTOMUL_4K (5 << 4)
#define AT91_MCI_DTOMUL_64K (6 << 4)
#define AT91_MCI_DTOMUL_1M (7 << 4)
#define AT91_MCI_SDCR 0x0c /* SD Card Register */
#define AT91_MCI_SDCSEL (3 << 0) /* SD Card Selector */
#define AT91_MCI_SDCBUS (1 << 7) /* 1-bit or 4-bit bus */
#define AT91_MCI_ARGR 0x10 /* Argument Register */
#define AT91_MCI_CMDR 0x14 /* Command Register */
#define AT91_MCI_CMDNB (0x3f << 0) /* Command Number */
#define AT91_MCI_RSPTYP (3 << 6) /* Response Type */
#define AT91_MCI_RSPTYP_NONE (0 << 6)
#define AT91_MCI_RSPTYP_48 (1 << 6)
#define AT91_MCI_RSPTYP_136 (2 << 6)
#define AT91_MCI_SPCMD (7 << 8) /* Special Command */
#define AT91_MCI_SPCMD_NONE (0 << 8)
#define AT91_MCI_SPCMD_INIT (1 << 8)
#define AT91_MCI_SPCMD_SYNC (2 << 8)
#define AT91_MCI_SPCMD_ICMD (4 << 8)
#define AT91_MCI_SPCMD_IRESP (5 << 8)
#define AT91_MCI_OPDCMD (1 << 11) /* Open Drain Command */
#define AT91_MCI_MAXLAT (1 << 12) /* Max Latency for Command to Response */
#define AT91_MCI_TRCMD (3 << 16) /* Transfer Command */
#define AT91_MCI_TRCMD_NONE (0 << 16)
#define AT91_MCI_TRCMD_START (1 << 16)
#define AT91_MCI_TRCMD_STOP (2 << 16)
#define AT91_MCI_TRDIR (1 << 18) /* Transfer Direction */
#define AT91_MCI_TRTYP (3 << 19) /* Transfer Type */
#define AT91_MCI_TRTYP_BLOCK (0 << 19)
#define AT91_MCI_TRTYP_MULTIPLE (1 << 19)
#define AT91_MCI_TRTYP_STREAM (2 << 19)
#define AT91_MCI_TRTYP_SDIO_BYTE (4 << 19)
#define AT91_MCI_TRTYP_SDIO_BLOCK (5 << 19)
#define AT91_MCI_BLKR 0x18 /* Block Register */
#define AT91_MCI_BLKR_BCNT(n) ((0xffff & (n)) << 0) /* Block count */
#define AT91_MCI_BLKR_BLKLEN(n) ((0xffff & (n)) << 16) /* Block length */
#define AT91_MCI_RSPR(n) (0x20 + ((n) * 4)) /* Response Registers 0-3 */
#define AT91_MCR_RDR 0x30 /* Receive Data Register */
#define AT91_MCR_TDR 0x34 /* Transmit Data Register */
#define AT91_MCI_SR 0x40 /* Status Register */
#define AT91_MCI_CMDRDY (1 << 0) /* Command Ready */
#define AT91_MCI_RXRDY (1 << 1) /* Receiver Ready */
#define AT91_MCI_TXRDY (1 << 2) /* Transmit Ready */
#define AT91_MCI_BLKE (1 << 3) /* Data Block Ended */
#define AT91_MCI_DTIP (1 << 4) /* Data Transfer in Progress */
#define AT91_MCI_NOTBUSY (1 << 5) /* Data Not Busy */
#define AT91_MCI_ENDRX (1 << 6) /* End of RX Buffer */
#define AT91_MCI_ENDTX (1 << 7) /* End fo TX Buffer */
#define AT91_MCI_SDIOIRQA (1 << 8) /* SDIO Interrupt for Slot A */
#define AT91_MCI_SDIOIRQB (1 << 9) /* SDIO Interrupt for Slot B */
#define AT91_MCI_RXBUFF (1 << 14) /* RX Buffer Full */
#define AT91_MCI_TXBUFE (1 << 15) /* TX Buffer Empty */
#define AT91_MCI_RINDE (1 << 16) /* Response Index Error */
#define AT91_MCI_RDIRE (1 << 17) /* Response Direction Error */
#define AT91_MCI_RCRCE (1 << 18) /* Response CRC Error */
#define AT91_MCI_RENDE (1 << 19) /* Response End Bit Error */
#define AT91_MCI_RTOE (1 << 20) /* Response Time-out Error */
#define AT91_MCI_DCRCE (1 << 21) /* Data CRC Error */
#define AT91_MCI_DTOE (1 << 22) /* Data Time-out Error */
#define AT91_MCI_OVRE (1 << 30) /* Overrun */
#define AT91_MCI_UNRE (1 << 31) /* Underrun */
#define AT91_MCI_IER 0x44 /* Interrupt Enable Register */
#define AT91_MCI_IDR 0x48 /* Interrupt Disable Register */
#define AT91_MCI_IMR 0x4c /* Interrupt Mask Register */
#endif
drivers/mmc/host/dw_mmc-pci.c
View file @ 11b84c58
......@@ -134,7 +134,7 @@ static struct pci_driver dw_mci_pci_driver = {
.name = "dw_mmc_pci",
.id_table = dw_mci_pci_id,
.probe = dw_mci_pci_probe,
.remove = dw_mci_pci_remove,
.remove = __devexit_p(dw_mci_pci_remove),
.driver = {
.pm = &dw_mci_pci_pmops
},
......
drivers/mmc/host/dw_mmc-pltfm.c
View file @ 11b84c58
......@@ -119,7 +119,8 @@ static const struct of_device_id dw_mci_pltfm_match[] = {
MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
static struct platform_driver dw_mci_pltfm_driver = {
.remove = __exit_p(dw_mci_pltfm_remove),
.probe = dw_mci_pltfm_probe,
.remove = __devexit_p(dw_mci_pltfm_remove),
.driver = {
.name = "dw_mmc",
.of_match_table = of_match_ptr(dw_mci_pltfm_match),
......@@ -127,18 +128,7 @@ static struct platform_driver dw_mci_pltfm_driver = {
},
};
static int __init dw_mci_init(void)
{
return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe);
}
static void __exit dw_mci_exit(void)
{
platform_driver_unregister(&dw_mci_pltfm_driver);
}
module_init(dw_mci_init);
module_exit(dw_mci_exit);
module_platform_driver(dw_mci_pltfm_driver);
MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
MODULE_AUTHOR("NXP Semiconductor VietNam");
......
drivers/mmc/host/dw_mmc.c
View file @ 11b84c58
......@@ -232,7 +232,7 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
{
struct mmc_data *data;
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci_drv_data *drv_data = slot->host->drv_data;
const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
u32 cmdr;
cmd->error = -EINPROGRESS;
......@@ -617,13 +617,13 @@ static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
cmd, arg, cmd_status);
}
static void dw_mci_setup_bus(struct dw_mci_slot *slot)
static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
{
struct dw_mci *host = slot->host;
u32 div;
u32 clk_en_a;
if (slot->clock != host->current_speed) {
if (slot->clock != host->current_speed || force_clkinit) {
div = host->bus_hz / slot->clock;
if (host->bus_hz % slot->clock && host->bus_hz > slot->clock)
/*
......@@ -683,9 +683,6 @@ static void __dw_mci_start_request(struct dw_mci *host,
if (host->pdata->select_slot)
host->pdata->select_slot(slot->id);
/* Slot specific timing and width adjustment */
dw_mci_setup_bus(slot);
host->cur_slot = slot;
host->mrq = mrq;
......@@ -773,22 +770,19 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci_drv_data *drv_data = slot->host->drv_data;
const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
u32 regs;
/* set default 1 bit mode */
slot->ctype = SDMMC_CTYPE_1BIT;
switch (ios->bus_width) {
case MMC_BUS_WIDTH_1:
slot->ctype = SDMMC_CTYPE_1BIT;
break;
case MMC_BUS_WIDTH_4:
slot->ctype = SDMMC_CTYPE_4BIT;
break;
case MMC_BUS_WIDTH_8:
slot->ctype = SDMMC_CTYPE_8BIT;
break;
default:
/* set default 1 bit mode */
slot->ctype = SDMMC_CTYPE_1BIT;
}
regs = mci_readl(slot->host, UHS_REG);
......@@ -812,6 +806,9 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (drv_data && drv_data->set_ios)
drv_data->set_ios(slot->host, ios);
/* Slot specific timing and width adjustment */
dw_mci_setup_bus(slot, false);
switch (ios->power_mode) {
case MMC_POWER_UP:
set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
......@@ -1817,7 +1814,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
{
struct mmc_host *mmc;
struct dw_mci_slot *slot;
struct dw_mci_drv_data *drv_data = host->drv_data;
const struct dw_mci_drv_data *drv_data = host->drv_data;
int ctrl_id, ret;
u8 bus_width;
......@@ -1850,6 +1847,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
if (host->pdata->caps)
mmc->caps = host->pdata->caps;
if (host->pdata->pm_caps)
mmc->pm_caps = host->pdata->pm_caps;
if (host->dev->of_node) {
ctrl_id = of_alias_get_id(host->dev->of_node, "mshc");
if (ctrl_id < 0)
......@@ -1911,7 +1911,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
#endif /* CONFIG_MMC_DW_IDMAC */
}
host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
host->vmmc = devm_regulator_get(mmc_dev(mmc), "vmmc");
if (IS_ERR(host->vmmc)) {
pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
host->vmmc = NULL;
......@@ -1960,7 +1960,7 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
static void dw_mci_init_dma(struct dw_mci *host)
{
/* Alloc memory for sg translation */
host->sg_cpu = dma_alloc_coherent(host->dev, PAGE_SIZE,
host->sg_cpu = dmam_alloc_coherent(host->dev, PAGE_SIZE,
&host->sg_dma, GFP_KERNEL);
if (!host->sg_cpu) {
dev_err(host->dev, "%s: could not alloc DMA memory\n",
......@@ -2038,7 +2038,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
struct dw_mci_board *pdata;
struct device *dev = host->dev;
struct device_node *np = dev->of_node;
struct dw_mci_drv_data *drv_data = host->drv_data;
const struct dw_mci_drv_data *drv_data = host->drv_data;
int idx, ret;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
......@@ -2072,6 +2072,12 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
return ERR_PTR(ret);
}
if (of_find_property(np, "keep-power-in-suspend", NULL))
pdata->pm_caps |= MMC_PM_KEEP_POWER;
if (of_find_property(np, "enable-sdio-wakeup", NULL))
pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
return pdata;
}
......@@ -2084,7 +2090,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
int dw_mci_probe(struct dw_mci *host)
{
struct dw_mci_drv_data *drv_data = host->drv_data;
const struct dw_mci_drv_data *drv_data = host->drv_data;
int width, i, ret = 0;
u32 fifo_size;
int init_slots = 0;
......@@ -2103,26 +2109,24 @@ int dw_mci_probe(struct dw_mci *host)
return -ENODEV;
}
host->biu_clk = clk_get(host->dev, "biu");
host->biu_clk = devm_clk_get(host->dev, "biu");
if (IS_ERR(host->biu_clk)) {
dev_dbg(host->dev, "biu clock not available\n");
} else {
ret = clk_prepare_enable(host->biu_clk);
if (ret) {
dev_err(host->dev, "failed to enable biu clock\n");
clk_put(host->biu_clk);
return ret;
}
}
host->ciu_clk = clk_get(host->dev, "ciu");
host->ciu_clk = devm_clk_get(host->dev, "ciu");
if (IS_ERR(host->ciu_clk)) {
dev_dbg(host->dev, "ciu clock not available\n");
} else {
ret = clk_prepare_enable(host->ciu_clk);
if (ret) {
dev_err(host->dev, "failed to enable ciu clock\n");
clk_put(host->ciu_clk);
goto err_clk_biu;
}
}
......@@ -2224,7 +2228,8 @@ int dw_mci_probe(struct dw_mci *host)
if (!host->card_workqueue)
goto err_dmaunmap;
INIT_WORK(&host->card_work, dw_mci_work_routine_card);
ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt,
host->irq_flags, "dw-mci", host);
if (ret)
goto err_workqueue;
......@@ -2262,7 +2267,7 @@ int dw_mci_probe(struct dw_mci *host)
} else {
dev_dbg(host->dev, "attempted to initialize %d slots, "
"but failed on all\n", host->num_slots);
goto err_init_slot;
goto err_workqueue;
}
/*
......@@ -2282,33 +2287,24 @@ int dw_mci_probe(struct dw_mci *host)
return 0;
err_init_slot:
free_irq(host->irq, host);
err_workqueue:
destroy_workqueue(host->card_workqueue);
err_dmaunmap:
if (host->use_dma && host->dma_ops->exit)
host->dma_ops->exit(host);
dma_free_coherent(host->dev, PAGE_SIZE,
host->sg_cpu, host->sg_dma);
if (host->vmmc) {
if (host->vmmc)
regulator_disable(host->vmmc);
regulator_put(host->vmmc);
}
err_clk_ciu:
if (!IS_ERR(host->ciu_clk)) {
if (!IS_ERR(host->ciu_clk))
clk_disable_unprepare(host->ciu_clk);
clk_put(host->ciu_clk);
}
err_clk_biu:
if (!IS_ERR(host->biu_clk)) {
if (!IS_ERR(host->biu_clk))
clk_disable_unprepare(host->biu_clk);
clk_put(host->biu_clk);
}
return ret;
}
EXPORT_SYMBOL(dw_mci_probe);
......@@ -2330,24 +2326,19 @@ void dw_mci_remove(struct dw_mci *host)
mci_writel(host, CLKENA, 0);
mci_writel(host, CLKSRC, 0);
free_irq(host->irq, host);
destroy_workqueue(host->card_workqueue);
dma_free_coherent(host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
if (host->use_dma && host->dma_ops->exit)
host->dma_ops->exit(host);
if (host->vmmc) {
if (host->vmmc)
regulator_disable(host->vmmc);
regulator_put(host->vmmc);
}
if (!IS_ERR(host->ciu_clk))
clk_disable_unprepare(host->ciu_clk);
if (!IS_ERR(host->biu_clk))
clk_disable_unprepare(host->biu_clk);
clk_put(host->ciu_clk);
clk_put(host->biu_clk);
}
EXPORT_SYMBOL(dw_mci_remove);
......@@ -2411,6 +2402,11 @@ int dw_mci_resume(struct dw_mci *host)
struct dw_mci_slot *slot = host->slot[i];
if (!slot)
continue;
if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) {
dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
dw_mci_setup_bus(slot, true);
}
ret = mmc_resume_host(host->slot[i]->mmc);
if (ret < 0)
return ret;
......
drivers/mmc/host/mxcmmc.c
View file @ 11b84c58
......@@ -240,7 +240,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
return 0;
for_each_sg(data->sg, sg, data->sg_len, i) {
if (sg->offset & 3 || sg->length & 3) {
if (sg->offset & 3 || sg->length & 3 || sg->length < 512) {
host->do_dma = 0;
return 0;
}
......
drivers/mmc/host/mxs-mmc.c
View file @ 11b84c58
......@@ -43,7 +43,6 @@
#include <linux/module.h>
#include <linux/pinctrl/consumer.h>
#include <linux/stmp_device.h>
#include <linux/mmc/mxs-mmc.h>
#include <linux/spi/mxs-spi.h>
#define DRIVER_NAME "mxs-mmc"
......@@ -593,13 +592,13 @@ static int mxs_mmc_probe(struct platform_device *pdev)
struct mxs_mmc_host *host;
struct mmc_host *mmc;
struct resource *iores, *dmares;
struct mxs_mmc_platform_data *pdata;
struct pinctrl *pinctrl;
int ret = 0, irq_err, irq_dma;
dma_cap_mask_t mask;
struct regulator *reg_vmmc;
enum of_gpio_flags flags;
struct mxs_ssp *ssp;
u32 bus_width = 0;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
......@@ -682,25 +681,15 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL;
pdata = mmc_dev(host->mmc)->platform_data;
if (!pdata) {
u32 bus_width = 0;
of_property_read_u32(np, "bus-width", &bus_width);
if (bus_width == 4)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0,
&flags);
if (flags & OF_GPIO_ACTIVE_LOW)
host->wp_inverted = 1;
} else {
if (pdata->flags & SLOTF_8_BIT_CAPABLE)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
if (pdata->flags & SLOTF_4_BIT_CAPABLE)
mmc->caps |= MMC_CAP_4_BIT_DATA;
host->wp_gpio = pdata->wp_gpio;
}
of_property_read_u32(np, "bus-width", &bus_width);
if (bus_width == 4)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
if (flags & OF_GPIO_ACTIVE_LOW)
host->wp_inverted = 1;
mmc->f_min = 400000;
mmc->f_max = 288000000;
......
drivers/mmc/host/omap_hsmmc.c
View file @ 11b84c58
......@@ -37,6 +37,7 @@
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
#include <mach/hardware.h>
#include <plat/mmc.h>
......@@ -62,6 +63,7 @@
#define VS18 (1 << 26)
#define VS30 (1 << 25)
#define HSS (1 << 21)
#define SDVS18 (0x5 << 9)
#define SDVS30 (0x6 << 9)
#define SDVS33 (0x7 << 9)
......@@ -78,28 +80,17 @@
#define CLKD_SHIFT 6
#define DTO_MASK 0x000F0000
#define DTO_SHIFT 16
#define INT_EN_MASK 0x307F0033
#define BWR_ENABLE (1 << 4)
#define BRR_ENABLE (1 << 5)
#define DTO_ENABLE (1 << 20)
#define INIT_STREAM (1 << 1)
#define DP_SELECT (1 << 21)
#define DDIR (1 << 4)
#define DMA_EN 0x1
#define DMAE 0x1
#define MSBS (1 << 5)
#define BCE (1 << 1)
#define FOUR_BIT (1 << 1)
#define HSPE (1 << 2)
#define DDR (1 << 19)
#define DW8 (1 << 5)
#define CC 0x1
#define TC 0x02
#define OD 0x1
#define ERR (1 << 15)
#define CMD_TIMEOUT (1 << 16)
#define DATA_TIMEOUT (1 << 20)
#define CMD_CRC (1 << 17)
#define DATA_CRC (1 << 21)
#define CARD_ERR (1 << 28)
#define STAT_CLEAR 0xFFFFFFFF
#define INIT_STREAM_CMD 0x00000000
#define DUAL_VOLT_OCR_BIT 7
......@@ -108,6 +99,26 @@
#define SOFTRESET (1 << 1)
#define RESETDONE (1 << 0)
/* Interrupt masks for IE and ISE register */
#define CC_EN (1 << 0)
#define TC_EN (1 << 1)
#define BWR_EN (1 << 4)
#define BRR_EN (1 << 5)
#define ERR_EN (1 << 15)
#define CTO_EN (1 << 16)
#define CCRC_EN (1 << 17)
#define CEB_EN (1 << 18)
#define CIE_EN (1 << 19)
#define DTO_EN (1 << 20)
#define DCRC_EN (1 << 21)
#define DEB_EN (1 << 22)
#define CERR_EN (1 << 28)
#define BADA_EN (1 << 29)
#define INT_EN_MASK (BADA_EN | CERR_EN | DEB_EN | DCRC_EN |\
DTO_EN | CIE_EN | CEB_EN | CCRC_EN | CTO_EN | \
BRR_EN | BWR_EN | TC_EN | CC_EN)
#define MMC_AUTOSUSPEND_DELAY 100
#define MMC_TIMEOUT_MS 20
#define OMAP_MMC_MIN_CLOCK 400000
......@@ -302,7 +313,7 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
reg = regulator_get(host->dev, "vmmc");
if (IS_ERR(reg)) {
dev_dbg(host->dev, "vmmc regulator missing\n");
dev_err(host->dev, "vmmc regulator missing\n");
return PTR_ERR(reg);
} else {
mmc_slot(host).set_power = omap_hsmmc_set_power;
......@@ -455,13 +466,13 @@ static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host,
unsigned int irq_mask;
if (host->use_dma)
irq_mask = INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE);
irq_mask = INT_EN_MASK & ~(BRR_EN | BWR_EN);
else
irq_mask = INT_EN_MASK;
/* Disable timeout for erases */
if (cmd->opcode == MMC_ERASE)
irq_mask &= ~DTO_ENABLE;
irq_mask &= ~DTO_EN;
OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
OMAP_HSMMC_WRITE(host->base, ISE, irq_mask);
......@@ -494,6 +505,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host)
struct mmc_ios *ios = &host->mmc->ios;
unsigned long regval;
unsigned long timeout;
unsigned long clkdiv;
dev_vdbg(mmc_dev(host->mmc), "Set clock to %uHz\n", ios->clock);
......@@ -501,7 +513,8 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host)
regval = OMAP_HSMMC_READ(host->base, SYSCTL);
regval = regval & ~(CLKD_MASK | DTO_MASK);
regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16);
clkdiv = calc_divisor(host, ios);
regval = regval | (clkdiv << 6) | (DTO << 16);
OMAP_HSMMC_WRITE(host->base, SYSCTL, regval);
OMAP_HSMMC_WRITE(host->base, SYSCTL,
OMAP_HSMMC_READ(host->base, SYSCTL) | ICE);
......@@ -512,6 +525,27 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host)
&& time_before(jiffies, timeout))
cpu_relax();
/*
* Enable High-Speed Support
* Pre-Requisites
* - Controller should support High-Speed-Enable Bit
* - Controller should not be using DDR Mode
* - Controller should advertise that it supports High Speed
* in capabilities register
* - MMC/SD clock coming out of controller > 25MHz
*/
if ((mmc_slot(host).features & HSMMC_HAS_HSPE_SUPPORT) &&
(ios->timing != MMC_TIMING_UHS_DDR50) &&
((OMAP_HSMMC_READ(host->base, CAPA) & HSS) == HSS)) {
regval = OMAP_HSMMC_READ(host->base, HCTL);
if (clkdiv && (clk_get_rate(host->fclk)/clkdiv) > 25000000)
regval |= HSPE;
else
regval &= ~HSPE;
OMAP_HSMMC_WRITE(host->base, HCTL, regval);
}
omap_hsmmc_start_clock(host);
}
......@@ -676,8 +710,8 @@ static void send_init_stream(struct omap_hsmmc_host *host)
OMAP_HSMMC_WRITE(host->base, CMD, INIT_STREAM_CMD);
timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
while ((reg != CC) && time_before(jiffies, timeout))
reg = OMAP_HSMMC_READ(host->base, STAT) & CC;
while ((reg != CC_EN) && time_before(jiffies, timeout))
reg = OMAP_HSMMC_READ(host->base, STAT) & CC_EN;
OMAP_HSMMC_WRITE(host->base, CON,
OMAP_HSMMC_READ(host->base, CON) & ~INIT_STREAM);
......@@ -768,7 +802,7 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,
}
if (host->use_dma)
cmdreg |= DMA_EN;
cmdreg |= DMAE;
host->req_in_progress = 1;
......@@ -968,16 +1002,20 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host,
__func__);
}
static void hsmmc_command_incomplete(struct omap_hsmmc_host *host, int err)
static void hsmmc_command_incomplete(struct omap_hsmmc_host *host,
int err, int end_cmd)
{
omap_hsmmc_reset_controller_fsm(host, SRC);
host->cmd->error = err;
if (end_cmd) {
omap_hsmmc_reset_controller_fsm(host, SRC);
if (host->cmd)
host->cmd->error = err;
}
if (host->data) {
omap_hsmmc_reset_controller_fsm(host, SRD);
omap_hsmmc_dma_cleanup(host, err);
}
} else if (host->mrq && host->mrq->cmd)
host->mrq->cmd->error = err;
}
static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
......@@ -988,23 +1026,25 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
data = host->data;
dev_vdbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status);
if (status & ERR) {
if (status & ERR_EN) {
omap_hsmmc_dbg_report_irq(host, status);
if (status & (CMD_TIMEOUT | DATA_TIMEOUT))
hsmmc_command_incomplete(host, -ETIMEDOUT);
else if (status & (CMD_CRC | DATA_CRC))
hsmmc_command_incomplete(host, -EILSEQ);
end_cmd = 1;
if (status & (CTO_EN | CCRC_EN))
end_cmd = 1;
if (status & (CTO_EN | DTO_EN))
hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd);
else if (status & (CCRC_EN | DCRC_EN))
hsmmc_command_incomplete(host, -EILSEQ, end_cmd);
if (host->data || host->response_busy) {
end_trans = 1;
end_trans = !end_cmd;
host->response_busy = 0;
}
}
if (end_cmd || ((status & CC) && host->cmd))
if (end_cmd || ((status & CC_EN) && host->cmd))
omap_hsmmc_cmd_done(host, host->cmd);
if ((end_trans || (status & TC)) && host->mrq)
if ((end_trans || (status & TC_EN)) && host->mrq)
omap_hsmmc_xfer_done(host, data);
}
......@@ -1101,7 +1141,7 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
return 0;
err:
dev_dbg(mmc_dev(host->mmc), "Unable to switch operating voltage\n");
dev_err(mmc_dev(host->mmc), "Unable to switch operating voltage\n");
return ret;
}
......@@ -1360,7 +1400,7 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req)
if (host->use_dma) {
ret = omap_hsmmc_start_dma_transfer(host, req);
if (ret != 0) {
dev_dbg(mmc_dev(host->mmc), "MMC start dma failure\n");
dev_err(mmc_dev(host->mmc), "MMC start dma failure\n");
return ret;
}
}
......@@ -1678,7 +1718,7 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
{
struct omap_mmc_platform_data *pdata;
struct device_node *np = dev->of_node;
u32 bus_width;
u32 bus_width, max_freq;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
......@@ -1705,6 +1745,12 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
if (of_find_property(np, "ti,needs-special-reset", NULL))
pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET;
if (!of_property_read_u32(np, "max-frequency", &max_freq))
pdata->max_freq = max_freq;
if (of_find_property(np, "ti,needs-special-hs-handling", NULL))
pdata->slots[0].features |= HSMMC_HAS_HSPE_SUPPORT;
return pdata;
}
#else
......@@ -1725,6 +1771,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
const struct of_device_id *match;
dma_cap_mask_t mask;
unsigned tx_req, rx_req;
struct pinctrl *pinctrl;
match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev);
if (match) {
......@@ -1821,7 +1868,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
* MMC can still work without debounce clock.
*/
if (IS_ERR(host->dbclk)) {
dev_warn(mmc_dev(host->mmc), "Failed to get debounce clk\n");
host->dbclk = NULL;
} else if (clk_prepare_enable(host->dbclk) != 0) {
dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n");
......@@ -1889,13 +1935,13 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
ret = request_irq(host->irq, omap_hsmmc_irq, 0,
mmc_hostname(mmc), host);
if (ret) {
dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n");
dev_err(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n");
goto err_irq;
}
if (pdata->init != NULL) {
if (pdata->init(&pdev->dev) != 0) {
dev_dbg(mmc_dev(host->mmc),
dev_err(mmc_dev(host->mmc),
"Unable to configure MMC IRQs\n");
goto err_irq_cd_init;
}
......@@ -1918,7 +1964,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
mmc_hostname(mmc), host);
if (ret) {
dev_dbg(mmc_dev(host->mmc),
dev_err(mmc_dev(host->mmc),
"Unable to grab MMC CD IRQ\n");
goto err_irq_cd;
}
......@@ -1928,6 +1974,11 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
omap_hsmmc_disable_irq(host);
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(pinctrl))
dev_warn(&pdev->dev,
"pins are not configured from the driver\n");
omap_hsmmc_protect_card(host);
mmc_add_host(mmc);
......@@ -2027,6 +2078,25 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
static int omap_hsmmc_prepare(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
if (host->pdata->suspend)
return host->pdata->suspend(dev, host->slot_id);
return 0;
}
static void omap_hsmmc_complete(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
if (host->pdata->resume)
host->pdata->resume(dev, host->slot_id);
}
static int omap_hsmmc_suspend(struct device *dev)
{
int ret = 0;
......@@ -2040,23 +2110,10 @@ static int omap_hsmmc_suspend(struct device *dev)
pm_runtime_get_sync(host->dev);
host->suspended = 1;
if (host->pdata->suspend) {
ret = host->pdata->suspend(dev, host->slot_id);
if (ret) {
dev_dbg(dev, "Unable to handle MMC board"
" level suspend\n");
host->suspended = 0;
return ret;
}
}
ret = mmc_suspend_host(host->mmc);
if (ret) {
host->suspended = 0;
if (host->pdata->resume) {
if (host->pdata->resume(dev, host->slot_id))
dev_dbg(dev, "Unmask interrupt failed\n");
}
goto err;
}
......@@ -2093,12 +2150,6 @@ static int omap_hsmmc_resume(struct device *dev)
if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
omap_hsmmc_conf_bus_power(host);
if (host->pdata->resume) {
ret = host->pdata->resume(dev, host->slot_id);
if (ret)
dev_dbg(dev, "Unmask interrupt failed\n");
}
omap_hsmmc_protect_card(host);
/* Notify the core to resume the host */
......@@ -2114,8 +2165,10 @@ static int omap_hsmmc_resume(struct device *dev)
}
#else
#define omap_hsmmc_prepare NULL
#define omap_hsmmc_complete NULL
#define omap_hsmmc_suspend NULL
#define omap_hsmmc_resume NULL
#define omap_hsmmc_resume NULL
#endif
static int omap_hsmmc_runtime_suspend(struct device *dev)
......@@ -2143,6 +2196,8 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
.suspend = omap_hsmmc_suspend,
.resume = omap_hsmmc_resume,
.prepare = omap_hsmmc_prepare,
.complete = omap_hsmmc_complete,
.runtime_suspend = omap_hsmmc_runtime_suspend,
.runtime_resume = omap_hsmmc_runtime_resume,
};
......
drivers/mmc/host/sdhci-dove.c
View file @ 11b84c58
......@@ -19,20 +19,30 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/mmc/host.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include "sdhci-pltfm.h"
struct sdhci_dove_priv {
struct clk *clk;
int gpio_cd;
};
static irqreturn_t sdhci_dove_carddetect_irq(int irq, void *data)
{
struct sdhci_host *host = data;
tasklet_schedule(&host->card_tasklet);
return IRQ_HANDLED;
}
static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
{
u16 ret;
......@@ -50,16 +60,25 @@ static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_dove_priv *priv = pltfm_host->priv;
u32 ret;
ret = readl(host->ioaddr + reg);
switch (reg) {
case SDHCI_CAPABILITIES:
ret = readl(host->ioaddr + reg);
/* Mask the support for 3.0V */
ret &= ~SDHCI_CAN_VDD_300;
break;
default:
ret = readl(host->ioaddr + reg);
case SDHCI_PRESENT_STATE:
if (gpio_is_valid(priv->gpio_cd)) {
if (gpio_get_value(priv->gpio_cd) == 0)
ret |= SDHCI_CARD_PRESENT;
else
ret &= ~SDHCI_CARD_PRESENT;
}
break;
}
return ret;
}
......@@ -92,25 +111,70 @@ static int __devinit sdhci_dove_probe(struct platform_device *pdev)
return -ENOMEM;
}
priv->clk = clk_get(&pdev->dev, NULL);
if (!IS_ERR(priv->clk))
clk_prepare_enable(priv->clk);
priv->clk = devm_clk_get(&pdev->dev, NULL);
ret = sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
if (ret)
goto sdhci_dove_register_fail;
if (pdev->dev.of_node) {
priv->gpio_cd = of_get_named_gpio(pdev->dev.of_node,
"cd-gpios", 0);
} else {
priv->gpio_cd = -EINVAL;
}
if (gpio_is_valid(priv->gpio_cd)) {
ret = gpio_request(priv->gpio_cd, "sdhci-cd");
if (ret) {
dev_err(&pdev->dev, "card detect gpio request failed: %d\n",
ret);
return ret;
}
gpio_direction_input(priv->gpio_cd);
}
host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata);
if (IS_ERR(host)) {
ret = PTR_ERR(host);
goto err_sdhci_pltfm_init;
}
host = platform_get_drvdata(pdev);
pltfm_host = sdhci_priv(host);
pltfm_host->priv = priv;
if (!IS_ERR(priv->clk))
clk_prepare_enable(priv->clk);
sdhci_get_of_property(pdev);
ret = sdhci_add_host(host);
if (ret)
goto err_sdhci_add;
/*
* We must request the IRQ after sdhci_add_host(), as the tasklet only
* gets setup in sdhci_add_host() and we oops.
*/
if (gpio_is_valid(priv->gpio_cd)) {
ret = request_irq(gpio_to_irq(priv->gpio_cd),
sdhci_dove_carddetect_irq,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
mmc_hostname(host->mmc), host);
if (ret) {
dev_err(&pdev->dev, "card detect irq request failed: %d\n",
ret);
goto err_request_irq;
}
}
return 0;
sdhci_dove_register_fail:
if (!IS_ERR(priv->clk)) {
err_request_irq:
sdhci_remove_host(host, 0);
err_sdhci_add:
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
clk_put(priv->clk);
}
sdhci_pltfm_free(pdev);
err_sdhci_pltfm_init:
if (gpio_is_valid(priv->gpio_cd))
gpio_free(priv->gpio_cd);
return ret;
}
......@@ -122,10 +186,14 @@ static int __devexit sdhci_dove_remove(struct platform_device *pdev)
sdhci_pltfm_unregister(pdev);
if (!IS_ERR(priv->clk)) {
clk_disable_unprepare(priv->clk);
clk_put(priv->clk);
if (gpio_is_valid(priv->gpio_cd)) {
free_irq(gpio_to_irq(priv->gpio_cd), host);
gpio_free(priv->gpio_cd);
}
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
return 0;
}
......
drivers/mmc/host/sdhci-esdhc-imx.c
View file @ 11b84c58
......@@ -456,10 +456,10 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
pltfm_host = sdhci_priv(host);
imx_data = kzalloc(sizeof(struct pltfm_imx_data), GFP_KERNEL);
imx_data = devm_kzalloc(&pdev->dev, sizeof(*imx_data), GFP_KERNEL);
if (!imx_data) {
err = -ENOMEM;
goto err_imx_data;
goto free_sdhci;
}
if (of_id)
......@@ -470,19 +470,19 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imx_data->clk_ipg)) {
err = PTR_ERR(imx_data->clk_ipg);
goto err_clk_get;
goto free_sdhci;
}
imx_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
if (IS_ERR(imx_data->clk_ahb)) {
err = PTR_ERR(imx_data->clk_ahb);
goto err_clk_get;
goto free_sdhci;
}
imx_data->clk_per = devm_clk_get(&pdev->dev, "per");
if (IS_ERR(imx_data->clk_per)) {
err = PTR_ERR(imx_data->clk_per);
goto err_clk_get;
goto free_sdhci;
}
pltfm_host->clk = imx_data->clk_per;
......@@ -494,7 +494,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
imx_data->pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(imx_data->pinctrl)) {
err = PTR_ERR(imx_data->pinctrl);
goto pin_err;
goto disable_clk;
}
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
......@@ -519,7 +519,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
if (!host->mmc->parent->platform_data) {
dev_err(mmc_dev(host->mmc), "no board data!\n");
err = -EINVAL;
goto no_board_data;
goto disable_clk;
}
imx_data->boarddata = *((struct esdhc_platform_data *)
host->mmc->parent->platform_data);
......@@ -527,7 +527,8 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
/* write_protect */
if (boarddata->wp_type == ESDHC_WP_GPIO) {
err = gpio_request_one(boarddata->wp_gpio, GPIOF_IN, "ESDHC_WP");
err = devm_gpio_request_one(&pdev->dev, boarddata->wp_gpio,
GPIOF_IN, "ESDHC_WP");
if (err) {
dev_warn(mmc_dev(host->mmc),
"no write-protect pin available!\n");
......@@ -543,19 +544,21 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
switch (boarddata->cd_type) {
case ESDHC_CD_GPIO:
err = gpio_request_one(boarddata->cd_gpio, GPIOF_IN, "ESDHC_CD");
err = devm_gpio_request_one(&pdev->dev, boarddata->cd_gpio,
GPIOF_IN, "ESDHC_CD");
if (err) {
dev_err(mmc_dev(host->mmc),
"no card-detect pin available!\n");
goto no_card_detect_pin;
goto disable_clk;
}
err = request_irq(gpio_to_irq(boarddata->cd_gpio), cd_irq,
err = devm_request_irq(&pdev->dev,
gpio_to_irq(boarddata->cd_gpio), cd_irq,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
mmc_hostname(host->mmc), host);
if (err) {
dev_err(mmc_dev(host->mmc), "request irq error\n");
goto no_card_detect_irq;
goto disable_clk;
}
/* fall through */
......@@ -574,27 +577,15 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
err = sdhci_add_host(host);
if (err)
goto err_add_host;
goto disable_clk;
return 0;
err_add_host:
if (gpio_is_valid(boarddata->cd_gpio))
free_irq(gpio_to_irq(boarddata->cd_gpio), host);
no_card_detect_irq:
if (gpio_is_valid(boarddata->cd_gpio))
gpio_free(boarddata->cd_gpio);
if (gpio_is_valid(boarddata->wp_gpio))
gpio_free(boarddata->wp_gpio);
no_card_detect_pin:
no_board_data:
pin_err:
disable_clk:
clk_disable_unprepare(imx_data->clk_per);
clk_disable_unprepare(imx_data->clk_ipg);
clk_disable_unprepare(imx_data->clk_ahb);
err_clk_get:
kfree(imx_data);
err_imx_data:
free_sdhci:
sdhci_pltfm_free(pdev);
return err;
}
......@@ -604,25 +595,14 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev)
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
sdhci_remove_host(host, dead);
if (gpio_is_valid(boarddata->wp_gpio))
gpio_free(boarddata->wp_gpio);
if (gpio_is_valid(boarddata->cd_gpio)) {
free_irq(gpio_to_irq(boarddata->cd_gpio), host);
gpio_free(boarddata->cd_gpio);
}
clk_disable_unprepare(imx_data->clk_per);
clk_disable_unprepare(imx_data->clk_ipg);
clk_disable_unprepare(imx_data->clk_ahb);
kfree(imx_data);
sdhci_pltfm_free(pdev);
return 0;
......
drivers/mmc/host/sdhci-of-esdhc.c
View file @ 11b84c58
......@@ -22,6 +22,7 @@
#include "sdhci-esdhc.h"
#define VENDOR_V_22 0x12
#define VENDOR_V_23 0x13
static u32 esdhc_readl(struct sdhci_host *host, int reg)
{
u32 ret;
......@@ -85,6 +86,18 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg)
return ret;
}
static void esdhc_writel(struct sdhci_host *host, u32 val, int reg)
{
/*
* Enable IRQSTATEN[BGESEN] is just to set IRQSTAT[BGE]
* when SYSCTL[RSTD]) is set for some special operations.
* No any impact other operation.
*/
if (reg == SDHCI_INT_ENABLE)
val |= SDHCI_INT_BLK_GAP;
sdhci_be32bs_writel(host, val, reg);
}
static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
{
if (reg == SDHCI_BLOCK_SIZE) {
......@@ -121,6 +134,41 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
sdhci_be32bs_writeb(host, val, reg);
}
/*
* For Abort or Suspend after Stop at Block Gap, ignore the ADMA
* error(IRQSTAT[ADMAE]) if both Transfer Complete(IRQSTAT[TC])
* and Block Gap Event(IRQSTAT[BGE]) are also set.
* For Continue, apply soft reset for data(SYSCTL[RSTD]);
* and re-issue the entire read transaction from beginning.
*/
static void esdhci_of_adma_workaround(struct sdhci_host *host, u32 intmask)
{
u32 tmp;
bool applicable;
dma_addr_t dmastart;
dma_addr_t dmanow;
tmp = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
applicable = (intmask & SDHCI_INT_DATA_END) &&
(intmask & SDHCI_INT_BLK_GAP) &&
(tmp == VENDOR_V_23);
if (!applicable)
return;
host->data->error = 0;
dmastart = sg_dma_address(host->data->sg);
dmanow = dmastart + host->data->bytes_xfered;
/*
* Force update to the next DMA block boundary.
*/
dmanow = (dmanow & ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) +
SDHCI_DEFAULT_BOUNDARY_SIZE;
host->data->bytes_xfered = dmanow - dmastart;
sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS);
}
static int esdhc_of_enable_dma(struct sdhci_host *host)
{
setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP);
......@@ -177,13 +225,16 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
if (vvn == VENDOR_V_22)
host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
if (vvn > VENDOR_V_22)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
}
static struct sdhci_ops sdhci_esdhc_ops = {
.read_l = esdhc_readl,
.read_w = esdhc_readw,
.read_b = esdhc_readb,
.write_l = sdhci_be32bs_writel,
.write_l = esdhc_writel,
.write_w = esdhc_writew,
.write_b = esdhc_writeb,
.set_clock = esdhc_of_set_clock,
......@@ -195,6 +246,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
.platform_suspend = esdhc_of_suspend,
.platform_resume = esdhc_of_resume,
#endif
.adma_workaround = esdhci_of_adma_workaround,
};
static struct sdhci_pltfm_data sdhci_esdhc_pdata = {
......
drivers/mmc/host/sdhci-pci.c
View file @ 11b84c58
......@@ -114,6 +114,7 @@ static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
SDHCI_TIMEOUT_CLK_UNIT |
SDHCI_CAN_VDD_330 |
SDHCI_CAN_DO_HISPD |
SDHCI_CAN_DO_SDMA;
return 0;
}
......
drivers/mmc/host/sdhci-pltfm.c
View file @ 11b84c58
......@@ -78,6 +78,9 @@ void sdhci_get_of_property(struct platform_device *pdev)
if (of_get_property(np, "broken-cd", NULL))
host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
if (of_get_property(np, "no-1-8-v", NULL))
host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc"))
host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
......@@ -89,6 +92,12 @@ void sdhci_get_of_property(struct platform_device *pdev)
clk = of_get_property(np, "clock-frequency", &size);
if (clk && size == sizeof(*clk) && *clk)
pltfm_host->clock = be32_to_cpup(clk);
if (of_find_property(np, "keep-power-in-suspend", NULL))
host->mmc->pm_caps |= MMC_PM_KEEP_POWER;
if (of_find_property(np, "enable-sdio-wakeup", NULL))
host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
}
}
#else
......
drivers/mmc/host/sdhci-pxav3.c
View file @ 11b84c58
......@@ -163,10 +163,18 @@ static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
return 0;
}
static u32 pxav3_get_max_clock(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
return clk_get_rate(pltfm_host->clk);
}
static struct sdhci_ops pxav3_sdhci_ops = {
.platform_reset_exit = pxav3_set_private_registers,
.set_uhs_signaling = pxav3_set_uhs_signaling,
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
.get_max_clock = pxav3_get_max_clock,
};
#ifdef CONFIG_OF
......@@ -249,7 +257,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
host->quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
| SDHCI_QUIRK_32BIT_ADMA_SIZE;
| SDHCI_QUIRK_32BIT_ADMA_SIZE
| SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
/* enable 1/8V DDR capable */
host->mmc->caps |= MMC_CAP_1_8V_DDR;
......@@ -271,6 +280,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
if (pdata->quirks)
host->quirks |= pdata->quirks;
if (pdata->quirks2)
host->quirks2 |= pdata->quirks2;
if (pdata->host_caps)
host->mmc->caps |= pdata->host_caps;
if (pdata->host_caps2)
......
drivers/mmc/host/sdhci-s3c.c
View file @ 11b84c58
......@@ -24,6 +24,7 @@
#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/pinctrl/consumer.h>
#include <linux/mmc/host.h>
......@@ -57,6 +58,7 @@ struct sdhci_s3c {
int ext_cd_irq;
int ext_cd_gpio;
int *gpios;
struct pinctrl *pctrl;
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
......@@ -373,7 +375,9 @@ static struct sdhci_ops sdhci_s3c_ops = {
static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
{
struct sdhci_host *host = platform_get_drvdata(dev);
#ifdef CONFIG_PM_RUNTIME
struct sdhci_s3c *sc = sdhci_priv(host);
#endif
unsigned long flags;
if (host) {
......@@ -413,7 +417,7 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc)
struct s3c_sdhci_platdata *pdata = sc->pdata;
struct device *dev = &sc->pdev->dev;
if (gpio_request(pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) {
if (devm_gpio_request(dev, pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) {
sc->ext_cd_gpio = pdata->ext_cd_gpio;
sc->ext_cd_irq = gpio_to_irq(pdata->ext_cd_gpio);
if (sc->ext_cd_irq &&
......@@ -456,12 +460,12 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
return -ENOMEM;
/* get the card detection method */
if (of_get_property(node, "broken-cd", 0)) {
if (of_get_property(node, "broken-cd", NULL)) {
pdata->cd_type = S3C_SDHCI_CD_NONE;
goto setup_bus;
}
if (of_get_property(node, "non-removable", 0)) {
if (of_get_property(node, "non-removable", NULL)) {
pdata->cd_type = S3C_SDHCI_CD_PERMANENT;
goto setup_bus;
}
......@@ -484,8 +488,9 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
return -EINVAL;
}
dev_info(dev, "assuming no card detect line available\n");
pdata->cd_type = S3C_SDHCI_CD_NONE;
/* assuming internal card detect that will be configured by pinctrl */
pdata->cd_type = S3C_SDHCI_CD_INTERNAL;
goto setup_bus;
found_cd:
if (pdata->cd_type == S3C_SDHCI_CD_GPIO) {
......@@ -494,7 +499,7 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
if (of_get_property(node, "cd-inverted", NULL))
pdata->ext_cd_gpio_invert = 1;
} else if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
ret = gpio_request(gpio, "sdhci-cd");
ret = devm_gpio_request(dev, gpio, "sdhci-cd");
if (ret) {
dev_err(dev, "card detect gpio request failed\n");
return -EINVAL;
......@@ -503,33 +508,28 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
}
setup_bus:
if (!IS_ERR(ourhost->pctrl))
return 0;
/* get the gpios for command, clock and data lines */
for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) {
gpio = of_get_gpio(node, cnt);
if (!gpio_is_valid(gpio)) {
dev_err(dev, "invalid gpio[%d]\n", cnt);
goto err_free_dt_cd_gpio;
return -EINVAL;
}
ourhost->gpios[cnt] = gpio;
}
for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) {
ret = gpio_request(ourhost->gpios[cnt], "sdhci-gpio");
ret = devm_gpio_request(dev, ourhost->gpios[cnt], "sdhci-gpio");
if (ret) {
dev_err(dev, "gpio[%d] request failed\n", cnt);
goto err_free_dt_gpios;
return -EINVAL;
}
}
return 0;
err_free_dt_gpios:
while (--cnt >= 0)
gpio_free(ourhost->gpios[cnt]);
err_free_dt_cd_gpio:
if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
gpio_free(ourhost->ext_cd_gpio);
return -EINVAL;
}
#else
static int __devinit sdhci_s3c_parse_dt(struct device *dev,
......@@ -586,13 +586,15 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
ret = -ENOMEM;
goto err_pdata;
goto err_pdata_io_clk;
}
sc->pctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (pdev->dev.of_node) {
ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata);
if (ret)
goto err_pdata;
goto err_pdata_io_clk;
} else {
memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata));
sc->ext_cd_gpio = -1; /* invalid gpio number */
......@@ -610,7 +612,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
if (IS_ERR(sc->clk_io)) {
dev_err(dev, "failed to get io clock\n");
ret = PTR_ERR(sc->clk_io);
goto err_io_clk;
goto err_pdata_io_clk;
}
/* enable the local io clock and keep it running for the moment. */
......@@ -773,13 +775,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
clk_disable_unprepare(sc->clk_io);
clk_put(sc->clk_io);
err_io_clk:
for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
gpio_free(sc->gpios[ptr]);
if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
gpio_free(sc->ext_cd_gpio);
err_pdata:
err_pdata_io_clk:
sdhci_free_host(host);
return ret;
......@@ -798,9 +794,6 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
if (sc->ext_cd_irq)
free_irq(sc->ext_cd_irq, sc);
if (gpio_is_valid(sc->ext_cd_gpio))
gpio_free(sc->ext_cd_gpio);
#ifdef CONFIG_PM_RUNTIME
if (pdata->cd_type != S3C_SDHCI_CD_INTERNAL)
clk_prepare_enable(sc->clk_io);
......@@ -821,11 +814,6 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
clk_disable_unprepare(sc->clk_io);
clk_put(sc->clk_io);
if (pdev->dev.of_node) {
for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
gpio_free(sc->gpios[ptr]);
}
sdhci_free_host(host);
platform_set_drvdata(pdev, NULL);
......
drivers/mmc/host/sdhci-spear.c
View file @ 11b84c58
......@@ -146,6 +146,11 @@ static int __devinit sdhci_probe(struct platform_device *pdev)
goto put_clk;
}
ret = clk_set_rate(sdhci->clk, 50000000);
if (ret)
dev_dbg(&pdev->dev, "Error setting desired clk, clk=%lu\n",
clk_get_rate(sdhci->clk));
if (np) {
sdhci->data = sdhci_probe_config_dt(pdev);
if (IS_ERR(sdhci->data)) {
......@@ -297,7 +302,7 @@ static int sdhci_suspend(struct device *dev)
ret = sdhci_suspend_host(host);
if (!ret)
clk_disable_unprepare(sdhci->clk);
clk_disable(sdhci->clk);
return ret;
}
......@@ -308,7 +313,7 @@ static int sdhci_resume(struct device *dev)
struct spear_sdhci *sdhci = dev_get_platdata(dev);
int ret;
ret = clk_prepare_enable(sdhci->clk);
ret = clk_enable(sdhci->clk);
if (ret) {
dev_dbg(dev, "Resume: Error enabling clock\n");
return ret;
......
drivers/mmc/host/sdhci.c
View file @ 11b84c58
......@@ -1618,7 +1618,7 @@ static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host,
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
if (host->vqmmc) {
ret = regulator_set_voltage(host->vqmmc, 3300000, 3300000);
ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
if (ret) {
pr_warning("%s: Switching to 3.3V signalling voltage "
" failed\n", mmc_hostname(host->mmc));
......@@ -1662,7 +1662,7 @@ static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
*/
if (host->vqmmc)
ret = regulator_set_voltage(host->vqmmc,
1800000, 1800000);
1700000, 1950000);
else
ret = 0;
......@@ -1994,30 +1994,11 @@ static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
sdhci_runtime_pm_put(host);
}
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
.hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
.enable_preset_value = sdhci_enable_preset_value,
};
/*****************************************************************************\
* *
* Tasklets *
* *
\*****************************************************************************/
static void sdhci_tasklet_card(unsigned long param)
static void sdhci_card_event(struct mmc_host *mmc)
{
struct sdhci_host *host;
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
host = (struct sdhci_host*)param;
spin_lock_irqsave(&host->lock, flags);
/* Check host->mrq first in case we are runtime suspended */
......@@ -2036,6 +2017,31 @@ static void sdhci_tasklet_card(unsigned long param)
}
spin_unlock_irqrestore(&host->lock, flags);
}
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
.hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
.enable_preset_value = sdhci_enable_preset_value,
.card_event = sdhci_card_event,
};
/*****************************************************************************\
* *
* Tasklets *
* *
\*****************************************************************************/
static void sdhci_tasklet_card(unsigned long param)
{
struct sdhci_host *host = (struct sdhci_host*)param;
sdhci_card_event(host->mmc);
mmc_detect_change(host->mmc, msecs_to_jiffies(200));
}
......@@ -2282,6 +2288,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
sdhci_show_adma_error(host);
host->data->error = -EIO;
if (host->ops->adma_workaround)
host->ops->adma_workaround(host, intmask);
}
if (host->data->error)
......@@ -2858,10 +2866,16 @@ int sdhci_add_host(struct sdhci_host *host)
mmc_hostname(mmc));
host->vqmmc = NULL;
}
}
else if (regulator_is_supported_voltage(host->vqmmc, 1800000, 1800000))
} else {
regulator_enable(host->vqmmc);
else
if (!regulator_is_supported_voltage(host->vqmmc, 1700000,
1950000))
caps[1] &= ~(SDHCI_SUPPORT_SDR104 |
SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
}
if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)
caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
......@@ -2919,21 +2933,18 @@ int sdhci_add_host(struct sdhci_host *host)
mmc_hostname(mmc));
host->vmmc = NULL;
}
} else
regulator_enable(host->vmmc);
}
#ifdef CONFIG_REGULATOR
if (host->vmmc) {
ret = regulator_is_supported_voltage(host->vmmc, 3300000,
3300000);
ret = regulator_is_supported_voltage(host->vmmc, 2700000,
3600000);
if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
caps[0] &= ~SDHCI_CAN_VDD_330;
ret = regulator_is_supported_voltage(host->vmmc, 3000000,
3000000);
if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300)))
caps[0] &= ~SDHCI_CAN_VDD_300;
ret = regulator_is_supported_voltage(host->vmmc, 1800000,
1800000);
ret = regulator_is_supported_voltage(host->vmmc, 1700000,
1950000);
if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180)))
caps[0] &= ~SDHCI_CAN_VDD_180;
}
......
drivers/mmc/host/sdhci.h
View file @ 11b84c58
......@@ -120,6 +120,7 @@
#define SDHCI_SIGNAL_ENABLE 0x38
#define SDHCI_INT_RESPONSE 0x00000001
#define SDHCI_INT_DATA_END 0x00000002
#define SDHCI_INT_BLK_GAP 0x00000004
#define SDHCI_INT_DMA_END 0x00000008
#define SDHCI_INT_SPACE_AVAIL 0x00000010
#define SDHCI_INT_DATA_AVAIL 0x00000020
......@@ -146,7 +147,8 @@
#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR)
SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \
SDHCI_INT_BLK_GAP)
#define SDHCI_INT_ALL_MASK ((unsigned int)-1)
#define SDHCI_ACMD12_ERR 0x3C
......@@ -278,6 +280,7 @@ struct sdhci_ops {
void (*hw_reset)(struct sdhci_host *host);
void (*platform_suspend)(struct sdhci_host *host);
void (*platform_resume)(struct sdhci_host *host);
void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
void (*platform_init)(struct sdhci_host *host);
};
......
drivers/mmc/host/sh_mmcif.c
View file @ 11b84c58
......@@ -1306,7 +1306,6 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
struct resource *res;
void __iomem *reg;
char clk_name[8];
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
......@@ -1356,11 +1355,10 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
host->power = false;
snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
host->hclk = clk_get(&pdev->dev, clk_name);
host->hclk = clk_get(&pdev->dev, NULL);
if (IS_ERR(host->hclk)) {
ret = PTR_ERR(host->hclk);
dev_err(&pdev->dev, "cannot get clock \"%s\": %d\n", clk_name, ret);
dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
goto eclkget;
}
ret = sh_mmcif_clk_update(host);
......
drivers/mmc/host/sh_mobile_sdhi.c
View file @ 11b84c58
......@@ -123,7 +123,6 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
struct tmio_mmc_data *mmc_data;
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
struct tmio_mmc_host *host;
char clk_name[8];
int irq, ret, i = 0;
bool multiplexed_isr = true;
......@@ -144,11 +143,10 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
}
}
snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id);
priv->clk = clk_get(&pdev->dev, clk_name);
priv->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
ret = PTR_ERR(priv->clk);
dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
goto eclkget;
}
......@@ -250,7 +248,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
mmc_hostname(host->mmc), (unsigned long)
(platform_get_resource(pdev, IORESOURCE_MEM, 0)->start),
mmc_data->hclk / 1000000);
host->mmc->f_max / 1000000);
return ret;
......
drivers/mmc/host/vub300.c
View file @ 11b84c58
......@@ -2362,6 +2362,7 @@ static int vub300_probe(struct usb_interface *interface,
error1:
usb_free_urb(command_out_urb);
error0:
usb_put_dev(udev);
return retval;
}
......
drivers/mmc/host/wmt-sdmmc.c 0 → 100644
View file @ 11b84c58
/*
* WM8505/WM8650 SD/MMC Host Controller
*
* Copyright (C) 2010 Tony Prisk
* Copyright (C) 2008 WonderMedia Technologies, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
#include <linux/errno.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_device.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
#include <asm/byteorder.h>
#define DRIVER_NAME "wmt-sdhc"
/* MMC/SD controller registers */
#define SDMMC_CTLR 0x00
#define SDMMC_CMD 0x01
#define SDMMC_RSPTYPE 0x02
#define SDMMC_ARG 0x04
#define SDMMC_BUSMODE 0x08
#define SDMMC_BLKLEN 0x0C
#define SDMMC_BLKCNT 0x0E
#define SDMMC_RSP 0x10
#define SDMMC_CBCR 0x20
#define SDMMC_INTMASK0 0x24
#define SDMMC_INTMASK1 0x25
#define SDMMC_STS0 0x28
#define SDMMC_STS1 0x29
#define SDMMC_STS2 0x2A
#define SDMMC_STS3 0x2B
#define SDMMC_RSPTIMEOUT 0x2C
#define SDMMC_CLK 0x30 /* VT8500 only */
#define SDMMC_EXTCTRL 0x34
#define SDMMC_SBLKLEN 0x38
#define SDMMC_DMATIMEOUT 0x3C
/* SDMMC_CTLR bit fields */
#define CTLR_CMD_START 0x01
#define CTLR_CMD_WRITE 0x04
#define CTLR_FIFO_RESET 0x08
/* SDMMC_BUSMODE bit fields */
#define BM_SPI_MODE 0x01
#define BM_FOURBIT_MODE 0x02
#define BM_EIGHTBIT_MODE 0x04
#define BM_SD_OFF 0x10
#define BM_SPI_CS 0x20
#define BM_SD_POWER 0x40
#define BM_SOFT_RESET 0x80
#define BM_ONEBIT_MASK 0xFD
/* SDMMC_BLKLEN bit fields */
#define BLKL_CRCERR_ABORT 0x0800
#define BLKL_CD_POL_HIGH 0x1000
#define BLKL_GPI_CD 0x2000
#define BLKL_DATA3_CD 0x4000
#define BLKL_INT_ENABLE 0x8000
/* SDMMC_INTMASK0 bit fields */
#define INT0_MBLK_TRAN_DONE_INT_EN 0x10
#define INT0_BLK_TRAN_DONE_INT_EN 0x20
#define INT0_CD_INT_EN 0x40
#define INT0_DI_INT_EN 0x80
/* SDMMC_INTMASK1 bit fields */
#define INT1_CMD_RES_TRAN_DONE_INT_EN 0x02
#define INT1_CMD_RES_TOUT_INT_EN 0x04
#define INT1_MBLK_AUTO_STOP_INT_EN 0x08
#define INT1_DATA_TOUT_INT_EN 0x10
#define INT1_RESCRC_ERR_INT_EN 0x20
#define INT1_RCRC_ERR_INT_EN 0x40
#define INT1_WCRC_ERR_INT_EN 0x80
/* SDMMC_STS0 bit fields */
#define STS0_WRITE_PROTECT 0x02
#define STS0_CD_DATA3 0x04
#define STS0_CD_GPI 0x08
#define STS0_MBLK_DONE 0x10
#define STS0_BLK_DONE 0x20
#define STS0_CARD_DETECT 0x40
#define STS0_DEVICE_INS 0x80
/* SDMMC_STS1 bit fields */
#define STS1_SDIO_INT 0x01
#define STS1_CMDRSP_DONE 0x02
#define STS1_RSP_TIMEOUT 0x04
#define STS1_AUTOSTOP_DONE 0x08
#define STS1_DATA_TIMEOUT 0x10
#define STS1_RSP_CRC_ERR 0x20
#define STS1_RCRC_ERR 0x40
#define STS1_WCRC_ERR 0x80
/* SDMMC_STS2 bit fields */
#define STS2_CMD_RES_BUSY 0x10
#define STS2_DATARSP_BUSY 0x20
#define STS2_DIS_FORCECLK 0x80
/* MMC/SD DMA Controller Registers */
#define SDDMA_GCR 0x100
#define SDDMA_IER 0x104
#define SDDMA_ISR 0x108
#define SDDMA_DESPR 0x10C
#define SDDMA_RBR 0x110
#define SDDMA_DAR 0x114
#define SDDMA_BAR 0x118
#define SDDMA_CPR 0x11C
#define SDDMA_CCR 0x120
/* SDDMA_GCR bit fields */
#define DMA_GCR_DMA_EN 0x00000001
#define DMA_GCR_SOFT_RESET 0x00000100
/* SDDMA_IER bit fields */
#define DMA_IER_INT_EN 0x00000001
/* SDDMA_ISR bit fields */
#define DMA_ISR_INT_STS 0x00000001
/* SDDMA_RBR bit fields */
#define DMA_RBR_FORMAT 0x40000000
#define DMA_RBR_END 0x80000000
/* SDDMA_CCR bit fields */
#define DMA_CCR_RUN 0x00000080
#define DMA_CCR_IF_TO_PERIPHERAL 0x00000000
#define DMA_CCR_PERIPHERAL_TO_IF 0x00400000
/* SDDMA_CCR event status */
#define DMA_CCR_EVT_NO_STATUS 0x00000000
#define DMA_CCR_EVT_UNDERRUN 0x00000001
#define DMA_CCR_EVT_OVERRUN 0x00000002
#define DMA_CCR_EVT_DESP_READ 0x00000003
#define DMA_CCR_EVT_DATA_RW 0x00000004
#define DMA_CCR_EVT_EARLY_END 0x00000005
#define DMA_CCR_EVT_SUCCESS 0x0000000F
#define PDMA_READ 0x00
#define PDMA_WRITE 0x01
#define WMT_SD_POWER_OFF 0
#define WMT_SD_POWER_ON 1
struct wmt_dma_descriptor {
u32 flags;
u32 data_buffer_addr;
u32 branch_addr;
u32 reserved1;
};
struct wmt_mci_caps {
unsigned int f_min;
unsigned int f_max;
u32 ocr_avail;
u32 caps;
u32 max_seg_size;
u32 max_segs;
u32 max_blk_size;
};
struct wmt_mci_priv {
struct mmc_host *mmc;
void __iomem *sdmmc_base;
int irq_regular;
int irq_dma;
void *dma_desc_buffer;
dma_addr_t dma_desc_device_addr;
struct completion cmdcomp;
struct completion datacomp;
struct completion *comp_cmd;
struct completion *comp_dma;
struct mmc_request *req;
struct mmc_command *cmd;
struct clk *clk_sdmmc;
struct device *dev;
u8 power_inverted;
u8 cd_inverted;
};
static void wmt_set_sd_power(struct wmt_mci_priv *priv, int enable)
{
u32 reg_tmp;
if (enable) {
if (priv->power_inverted) {
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_SD_OFF,
priv->sdmmc_base + SDMMC_BUSMODE);
} else {
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp & (~BM_SD_OFF),
priv->sdmmc_base + SDMMC_BUSMODE);
}
} else {
if (priv->power_inverted) {
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp & (~BM_SD_OFF),
priv->sdmmc_base + SDMMC_BUSMODE);
} else {
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_SD_OFF,
priv->sdmmc_base + SDMMC_BUSMODE);
}
}
}
static void wmt_mci_read_response(struct mmc_host *mmc)
{
struct wmt_mci_priv *priv;
int idx1, idx2;
u8 tmp_resp;
u32 response;
priv = mmc_priv(mmc);
for (idx1 = 0; idx1 < 4; idx1++) {
response = 0;
for (idx2 = 0; idx2 < 4; idx2++) {
if ((idx1 == 3) && (idx2 == 3))
tmp_resp = readb(priv->sdmmc_base + SDMMC_RSP);
else
tmp_resp = readb(priv->sdmmc_base + SDMMC_RSP +
(idx1*4) + idx2 + 1);
response |= (tmp_resp << (idx2 * 8));
}
priv->cmd->resp[idx1] = cpu_to_be32(response);
}
}
static void wmt_mci_start_command(struct wmt_mci_priv *priv)
{
u32 reg_tmp;
reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR);
writeb(reg_tmp | CTLR_CMD_START, priv->sdmmc_base + SDMMC_CTLR);
}
static int wmt_mci_send_command(struct mmc_host *mmc, u8 command, u8 cmdtype,
u32 arg, u8 rsptype)
{
struct wmt_mci_priv *priv;
u32 reg_tmp;
priv = mmc_priv(mmc);
/* write command, arg, resptype registers */
writeb(command, priv->sdmmc_base + SDMMC_CMD);
writel(arg, priv->sdmmc_base + SDMMC_ARG);
writeb(rsptype, priv->sdmmc_base + SDMMC_RSPTYPE);
/* reset response FIFO */
reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR);
writeb(reg_tmp | CTLR_FIFO_RESET, priv->sdmmc_base + SDMMC_CTLR);
/* ensure clock enabled - VT3465 */
wmt_set_sd_power(priv, WMT_SD_POWER_ON);
/* clear status bits */
writeb(0xFF, priv->sdmmc_base + SDMMC_STS0);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS1);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS2);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS3);
/* set command type */
reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR);
writeb((reg_tmp & 0x0F) | (cmdtype << 4),
priv->sdmmc_base + SDMMC_CTLR);
return 0;
}
static void wmt_mci_disable_dma(struct wmt_mci_priv *priv)
{
writel(DMA_ISR_INT_STS, priv->sdmmc_base + SDDMA_ISR);
writel(0, priv->sdmmc_base + SDDMA_IER);
}
static void wmt_complete_data_request(struct wmt_mci_priv *priv)
{
struct mmc_request *req;
req = priv->req;
req->data->bytes_xfered = req->data->blksz * req->data->blocks;
/* unmap the DMA pages used for write data */
if (req->data->flags & MMC_DATA_WRITE)
dma_unmap_sg(mmc_dev(priv->mmc), req->data->sg,
req->data->sg_len, DMA_TO_DEVICE);
else
dma_unmap_sg(mmc_dev(priv->mmc), req->data->sg,
req->data->sg_len, DMA_FROM_DEVICE);
/* Check if the DMA ISR returned a data error */
if ((req->cmd->error) || (req->data->error))
mmc_request_done(priv->mmc, req);
else {
wmt_mci_read_response(priv->mmc);
if (!req->data->stop) {
/* single-block read/write requests end here */
mmc_request_done(priv->mmc, req);
} else {
/*
* we change the priv->cmd variable so the response is
* stored in the stop struct rather than the original
* calling command struct
*/
priv->comp_cmd = &priv->cmdcomp;
init_completion(priv->comp_cmd);
priv->cmd = req->data->stop;
wmt_mci_send_command(priv->mmc, req->data->stop->opcode,
7, req->data->stop->arg, 9);
wmt_mci_start_command(priv);
}
}
}
static irqreturn_t wmt_mci_dma_isr(int irq_num, void *data)
{
struct mmc_host *mmc;
struct wmt_mci_priv *priv;
int status;
priv = (struct wmt_mci_priv *)data;
mmc = priv->mmc;
status = readl(priv->sdmmc_base + SDDMA_CCR) & 0x0F;
if (status != DMA_CCR_EVT_SUCCESS) {
dev_err(priv->dev, "DMA Error: Status = %d\n", status);
priv->req->data->error = -ETIMEDOUT;
complete(priv->comp_dma);
return IRQ_HANDLED;
}
priv->req->data->error = 0;
wmt_mci_disable_dma(priv);
complete(priv->comp_dma);
if (priv->comp_cmd) {
if (completion_done(priv->comp_cmd)) {
/*
* if the command (regular) interrupt has already
* completed, finish off the request otherwise we wait
* for the command interrupt and finish from there.
*/
wmt_complete_data_request(priv);
}
}
return IRQ_HANDLED;
}
static irqreturn_t wmt_mci_regular_isr(int irq_num, void *data)
{
struct wmt_mci_priv *priv;
u32 status0;
u32 status1;
u32 status2;
u32 reg_tmp;
int cmd_done;
priv = (struct wmt_mci_priv *)data;
cmd_done = 0;
status0 = readb(priv->sdmmc_base + SDMMC_STS0);
status1 = readb(priv->sdmmc_base + SDMMC_STS1);
status2 = readb(priv->sdmmc_base + SDMMC_STS2);
/* Check for card insertion */
reg_tmp = readb(priv->sdmmc_base + SDMMC_INTMASK0);
if ((reg_tmp & INT0_DI_INT_EN) && (status0 & STS0_DEVICE_INS)) {
mmc_detect_change(priv->mmc, 0);
if (priv->cmd)
priv->cmd->error = -ETIMEDOUT;
if (priv->comp_cmd)
complete(priv->comp_cmd);
if (priv->comp_dma) {
wmt_mci_disable_dma(priv);
complete(priv->comp_dma);
}
writeb(STS0_DEVICE_INS, priv->sdmmc_base + SDMMC_STS0);
return IRQ_HANDLED;
}
if ((!priv->req->data) ||
((priv->req->data->stop) && (priv->cmd == priv->req->data->stop))) {
/* handle non-data & stop_transmission requests */
if (status1 & STS1_CMDRSP_DONE) {
priv->cmd->error = 0;
cmd_done = 1;
} else if ((status1 & STS1_RSP_TIMEOUT) ||
(status1 & STS1_DATA_TIMEOUT)) {
priv->cmd->error = -ETIMEDOUT;
cmd_done = 1;
}
if (cmd_done) {
priv->comp_cmd = NULL;
if (!priv->cmd->error)
wmt_mci_read_response(priv->mmc);
priv->cmd = NULL;
mmc_request_done(priv->mmc, priv->req);
}
} else {
/* handle data requests */
if (status1 & STS1_CMDRSP_DONE) {
if (priv->cmd)
priv->cmd->error = 0;
if (priv->comp_cmd)
complete(priv->comp_cmd);
}
if ((status1 & STS1_RSP_TIMEOUT) ||
(status1 & STS1_DATA_TIMEOUT)) {
if (priv->cmd)
priv->cmd->error = -ETIMEDOUT;
if (priv->comp_cmd)
complete(priv->comp_cmd);
if (priv->comp_dma) {
wmt_mci_disable_dma(priv);
complete(priv->comp_dma);
}
}
if (priv->comp_dma) {
/*
* If the dma interrupt has already completed, finish
* off the request; otherwise we wait for the DMA
* interrupt and finish from there.
*/
if (completion_done(priv->comp_dma))
wmt_complete_data_request(priv);
}
}
writeb(status0, priv->sdmmc_base + SDMMC_STS0);
writeb(status1, priv->sdmmc_base + SDMMC_STS1);
writeb(status2, priv->sdmmc_base + SDMMC_STS2);
return IRQ_HANDLED;
}
static void wmt_reset_hardware(struct mmc_host *mmc)
{
struct wmt_mci_priv *priv;
u32 reg_tmp;
priv = mmc_priv(mmc);
/* reset controller */
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + SDMMC_BUSMODE);
/* reset response FIFO */
reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR);
writeb(reg_tmp | CTLR_FIFO_RESET, priv->sdmmc_base + SDMMC_CTLR);
/* enable GPI pin to detect card */
writew(BLKL_INT_ENABLE | BLKL_GPI_CD, priv->sdmmc_base + SDMMC_BLKLEN);
/* clear interrupt status */
writeb(0xFF, priv->sdmmc_base + SDMMC_STS0);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS1);
/* setup interrupts */
writeb(INT0_CD_INT_EN | INT0_DI_INT_EN, priv->sdmmc_base +
SDMMC_INTMASK0);
writeb(INT1_DATA_TOUT_INT_EN | INT1_CMD_RES_TRAN_DONE_INT_EN |
INT1_CMD_RES_TOUT_INT_EN, priv->sdmmc_base + SDMMC_INTMASK1);
/* set the DMA timeout */
writew(8191, priv->sdmmc_base + SDMMC_DMATIMEOUT);
/* auto clock freezing enable */
reg_tmp = readb(priv->sdmmc_base + SDMMC_STS2);
writeb(reg_tmp | STS2_DIS_FORCECLK, priv->sdmmc_base + SDMMC_STS2);
/* set a default clock speed of 400Khz */
clk_set_rate(priv->clk_sdmmc, 400000);
}
static int wmt_dma_init(struct mmc_host *mmc)
{
struct wmt_mci_priv *priv;
priv = mmc_priv(mmc);
writel(DMA_GCR_SOFT_RESET, priv->sdmmc_base + SDDMA_GCR);
writel(DMA_GCR_DMA_EN, priv->sdmmc_base + SDDMA_GCR);
if ((readl(priv->sdmmc_base + SDDMA_GCR) & DMA_GCR_DMA_EN) != 0)
return 0;
else
return 1;
}
static void wmt_dma_init_descriptor(struct wmt_dma_descriptor *desc,
u16 req_count, u32 buffer_addr, u32 branch_addr, int end)
{
desc->flags = 0x40000000 | req_count;
if (end)
desc->flags |= 0x80000000;
desc->data_buffer_addr = buffer_addr;
desc->branch_addr = branch_addr;
}
static void wmt_dma_config(struct mmc_host *mmc, u32 descaddr, u8 dir)
{
struct wmt_mci_priv *priv;
u32 reg_tmp;
priv = mmc_priv(mmc);
/* Enable DMA Interrupts */
writel(DMA_IER_INT_EN, priv->sdmmc_base + SDDMA_IER);
/* Write DMA Descriptor Pointer Register */
writel(descaddr, priv->sdmmc_base + SDDMA_DESPR);
writel(0x00, priv->sdmmc_base + SDDMA_CCR);
if (dir == PDMA_WRITE) {
reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR);
writel(reg_tmp & DMA_CCR_IF_TO_PERIPHERAL, priv->sdmmc_base +
SDDMA_CCR);
} else {
reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR);
writel(reg_tmp | DMA_CCR_PERIPHERAL_TO_IF, priv->sdmmc_base +
SDDMA_CCR);
}
}
static void wmt_dma_start(struct wmt_mci_priv *priv)
{
u32 reg_tmp;
reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR);
writel(reg_tmp | DMA_CCR_RUN, priv->sdmmc_base + SDDMA_CCR);
}
static void wmt_mci_request(struct mmc_host *mmc, struct mmc_request *req)
{
struct wmt_mci_priv *priv;
struct wmt_dma_descriptor *desc;
u8 command;
u8 cmdtype;
u32 arg;
u8 rsptype;
u32 reg_tmp;
struct scatterlist *sg;
int i;
int sg_cnt;
int offset;
u32 dma_address;
int desc_cnt;
priv = mmc_priv(mmc);
priv->req = req;
/*
* Use the cmd variable to pass a pointer to the resp[] structure
* This is required on multi-block requests to pass the pointer to the
* stop command
*/
priv->cmd = req->cmd;
command = req->cmd->opcode;
arg = req->cmd->arg;
rsptype = mmc_resp_type(req->cmd);
cmdtype = 0;
/* rsptype=7 only valid for SPI commands - should be =2 for SD */
if (rsptype == 7)
rsptype = 2;
/* rsptype=21 is R1B, convert for controller */
if (rsptype == 21)
rsptype = 9;
if (!req->data) {
wmt_mci_send_command(mmc, command, cmdtype, arg, rsptype);
wmt_mci_start_command(priv);
/* completion is now handled in the regular_isr() */
}
if (req->data) {
priv->comp_cmd = &priv->cmdcomp;
init_completion(priv->comp_cmd);
wmt_dma_init(mmc);
/* set controller data length */
reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN);
writew((reg_tmp & 0xF800) | (req->data->blksz - 1),
priv->sdmmc_base + SDMMC_BLKLEN);
/* set controller block count */
writew(req->data->blocks, priv->sdmmc_base + SDMMC_BLKCNT);
desc = (struct wmt_dma_descriptor *)priv->dma_desc_buffer;
if (req->data->flags & MMC_DATA_WRITE) {
sg_cnt = dma_map_sg(mmc_dev(mmc), req->data->sg,
req->data->sg_len, DMA_TO_DEVICE);
cmdtype = 1;
if (req->data->blocks > 1)
cmdtype = 3;
} else {
sg_cnt = dma_map_sg(mmc_dev(mmc), req->data->sg,
req->data->sg_len, DMA_FROM_DEVICE);
cmdtype = 2;
if (req->data->blocks > 1)
cmdtype = 4;
}
dma_address = priv->dma_desc_device_addr + 16;
desc_cnt = 0;
for_each_sg(req->data->sg, sg, sg_cnt, i) {
offset = 0;
while (offset < sg_dma_len(sg)) {
wmt_dma_init_descriptor(desc, req->data->blksz,
sg_dma_address(sg)+offset,
dma_address, 0);
desc++;
desc_cnt++;
offset += req->data->blksz;
dma_address += 16;
if (desc_cnt == req->data->blocks)
break;
}
}
desc--;
desc->flags |= 0x80000000;
if (req->data->flags & MMC_DATA_WRITE)
wmt_dma_config(mmc, priv->dma_desc_device_addr,
PDMA_WRITE);
else
wmt_dma_config(mmc, priv->dma_desc_device_addr,
PDMA_READ);
wmt_mci_send_command(mmc, command, cmdtype, arg, rsptype);
priv->comp_dma = &priv->datacomp;
init_completion(priv->comp_dma);
wmt_dma_start(priv);
wmt_mci_start_command(priv);
}
}
static void wmt_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct wmt_mci_priv *priv;
u32 reg_tmp;
priv = mmc_priv(mmc);
if (ios->power_mode == MMC_POWER_UP) {
wmt_reset_hardware(mmc);
wmt_set_sd_power(priv, WMT_SD_POWER_ON);
}
if (ios->power_mode == MMC_POWER_OFF)
wmt_set_sd_power(priv, WMT_SD_POWER_OFF);
if (ios->clock != 0)
clk_set_rate(priv->clk_sdmmc, ios->clock);
switch (ios->bus_width) {
case MMC_BUS_WIDTH_8:
reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
writeb(reg_tmp | 0x04, priv->sdmmc_base + SDMMC_EXTCTRL);
break;
case MMC_BUS_WIDTH_4:
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_FOURBIT_MODE, priv->sdmmc_base +
SDMMC_BUSMODE);
reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL);
break;
case MMC_BUS_WIDTH_1:
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp & BM_ONEBIT_MASK, priv->sdmmc_base +
SDMMC_BUSMODE);
reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL);
writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL);
break;
}
}
static int wmt_mci_get_ro(struct mmc_host *mmc)
{
struct wmt_mci_priv *priv = mmc_priv(mmc);
return !(readb(priv->sdmmc_base + SDMMC_STS0) & STS0_WRITE_PROTECT);
}
static int wmt_mci_get_cd(struct mmc_host *mmc)
{
struct wmt_mci_priv *priv = mmc_priv(mmc);
u32 cd = (readb(priv->sdmmc_base + SDMMC_STS0) & STS0_CD_GPI) >> 3;
return !(cd ^ priv->cd_inverted);
}
static struct mmc_host_ops wmt_mci_ops = {
.request = wmt_mci_request,
.set_ios = wmt_mci_set_ios,
.get_ro = wmt_mci_get_ro,
.get_cd = wmt_mci_get_cd,
};
/* Controller capabilities */
static struct wmt_mci_caps wm8505_caps = {
.f_min = 390425,
.f_max = 50000000,
.ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34,
.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SD_HIGHSPEED,
.max_seg_size = 65024,
.max_segs = 128,
.max_blk_size = 2048,
};
static struct of_device_id wmt_mci_dt_ids[] = {
{ .compatible = "wm,wm8505-sdhc", .data = &wm8505_caps },
{ /* Sentinel */ },
};
static int __devinit wmt_mci_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
struct wmt_mci_priv *priv;
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_id =
of_match_device(wmt_mci_dt_ids, &pdev->dev);
const struct wmt_mci_caps *wmt_caps = of_id->data;
int ret;
int regular_irq, dma_irq;
if (!of_id || !of_id->data) {
dev_err(&pdev->dev, "Controller capabilities data missing\n");
return -EFAULT;
}
if (!np) {
dev_err(&pdev->dev, "Missing SDMMC description in devicetree\n");
return -EFAULT;
}
regular_irq = irq_of_parse_and_map(np, 0);
dma_irq = irq_of_parse_and_map(np, 1);
if (!regular_irq || !dma_irq) {
dev_err(&pdev->dev, "Getting IRQs failed!\n");
ret = -ENXIO;
goto fail1;
}
mmc = mmc_alloc_host(sizeof(struct wmt_mci_priv), &pdev->dev);
if (!mmc) {
dev_err(&pdev->dev, "Failed to allocate mmc_host\n");
ret = -ENOMEM;
goto fail1;
}
mmc->ops = &wmt_mci_ops;
mmc->f_min = wmt_caps->f_min;
mmc->f_max = wmt_caps->f_max;
mmc->ocr_avail = wmt_caps->ocr_avail;
mmc->caps = wmt_caps->caps;
mmc->max_seg_size = wmt_caps->max_seg_size;
mmc->max_segs = wmt_caps->max_segs;
mmc->max_blk_size = wmt_caps->max_blk_size;
mmc->max_req_size = (16*512*mmc->max_segs);
mmc->max_blk_count = mmc->max_req_size / 512;
priv = mmc_priv(mmc);
priv->mmc = mmc;
priv->dev = &pdev->dev;
priv->power_inverted = 0;
priv->cd_inverted = 0;
if (of_get_property(np, "sdon-inverted", NULL))
priv->power_inverted = 1;
if (of_get_property(np, "cd-inverted", NULL))
priv->cd_inverted = 1;
priv->sdmmc_base = of_iomap(np, 0);
if (!priv->sdmmc_base) {
dev_err(&pdev->dev, "Failed to map IO space\n");
ret = -ENOMEM;
goto fail2;
}
priv->irq_regular = regular_irq;
priv->irq_dma = dma_irq;
ret = request_irq(regular_irq, wmt_mci_regular_isr, 0, "sdmmc", priv);
if (ret) {
dev_err(&pdev->dev, "Register regular IRQ fail\n");
goto fail3;
}
ret = request_irq(dma_irq, wmt_mci_dma_isr, 32, "sdmmc", priv);
if (ret) {
dev_err(&pdev->dev, "Register DMA IRQ fail\n");
goto fail4;
}
/* alloc some DMA buffers for descriptors/transfers */
priv->dma_desc_buffer = dma_alloc_coherent(&pdev->dev,
mmc->max_blk_count * 16,
&priv->dma_desc_device_addr,
208);
if (!priv->dma_desc_buffer) {
dev_err(&pdev->dev, "DMA alloc fail\n");
ret = -EPERM;
goto fail5;
}
platform_set_drvdata(pdev, mmc);
priv->clk_sdmmc = of_clk_get(np, 0);
if (IS_ERR(priv->clk_sdmmc)) {
dev_err(&pdev->dev, "Error getting clock\n");
ret = PTR_ERR(priv->clk_sdmmc);
goto fail5;
}
clk_prepare_enable(priv->clk_sdmmc);
/* configure the controller to a known 'ready' state */
wmt_reset_hardware(mmc);
mmc_add_host(mmc);
dev_info(&pdev->dev, "WMT SDHC Controller initialized\n");
return 0;
fail5:
free_irq(dma_irq, priv);
fail4:
free_irq(regular_irq, priv);
fail3:
iounmap(priv->sdmmc_base);
fail2:
mmc_free_host(mmc);
fail1:
return ret;
}
static int __devexit wmt_mci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc;
struct wmt_mci_priv *priv;
struct resource *res;
u32 reg_tmp;
mmc = platform_get_drvdata(pdev);
priv = mmc_priv(mmc);
/* reset SD controller */
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writel(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + SDMMC_BUSMODE);
reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN);
writew(reg_tmp & ~(0xA000), priv->sdmmc_base + SDMMC_BLKLEN);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS0);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS1);
/* release the dma buffers */
dma_free_coherent(&pdev->dev, priv->mmc->max_blk_count * 16,
priv->dma_desc_buffer, priv->dma_desc_device_addr);
mmc_remove_host(mmc);
free_irq(priv->irq_regular, priv);
free_irq(priv->irq_dma, priv);
iounmap(priv->sdmmc_base);
clk_disable_unprepare(priv->clk_sdmmc);
clk_put(priv->clk_sdmmc);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res->end - res->start + 1);
mmc_free_host(mmc);
platform_set_drvdata(pdev, NULL);
dev_info(&pdev->dev, "WMT MCI device removed\n");
return 0;
}
#ifdef CONFIG_PM
static int wmt_mci_suspend(struct device *dev)
{
u32 reg_tmp;
struct platform_device *pdev = to_platform_device(dev);
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct wmt_mci_priv *priv;
int ret;
if (!mmc)
return 0;
priv = mmc_priv(mmc);
ret = mmc_suspend_host(mmc);
if (!ret) {
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base +
SDMMC_BUSMODE);
reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN);
writew(reg_tmp & 0x5FFF, priv->sdmmc_base + SDMMC_BLKLEN);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS0);
writeb(0xFF, priv->sdmmc_base + SDMMC_STS1);
clk_disable(priv->clk_sdmmc);
}
return ret;
}
static int wmt_mci_resume(struct device *dev)
{
u32 reg_tmp;
struct platform_device *pdev = to_platform_device(dev);
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct wmt_mci_priv *priv;
int ret = 0;
if (mmc) {
priv = mmc_priv(mmc);
clk_enable(priv->clk_sdmmc);
reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE);
writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base +
SDMMC_BUSMODE);
reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN);
writew(reg_tmp | (BLKL_GPI_CD | BLKL_INT_ENABLE),
priv->sdmmc_base + SDMMC_BLKLEN);
reg_tmp = readb(priv->sdmmc_base + SDMMC_INTMASK0);
writeb(reg_tmp | INT0_DI_INT_EN, priv->sdmmc_base +
SDMMC_INTMASK0);
ret = mmc_resume_host(mmc);
}
return ret;
}
static const struct dev_pm_ops wmt_mci_pm = {
.suspend = wmt_mci_suspend,
.resume = wmt_mci_resume,
};
#define wmt_mci_pm_ops (&wmt_mci_pm)
#else /* !CONFIG_PM */
#define wmt_mci_pm_ops NULL
#endif
static struct platform_driver wmt_mci_driver = {
.probe = wmt_mci_probe,
.remove = __exit_p(wmt_mci_remove),
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.pm = wmt_mci_pm_ops,
.of_match_table = wmt_mci_dt_ids,
},
};
module_platform_driver(wmt_mci_driver);
MODULE_DESCRIPTION("Wondermedia MMC/SD Driver");
MODULE_AUTHOR("Tony Prisk");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(of, wmt_mci_dt_ids);
include/linux/mmc/card.h
View file @ 11b84c58
......@@ -85,6 +85,7 @@ struct mmc_ext_csd {
bool boot_ro_lockable;
u8 raw_exception_status; /* 53 */
u8 raw_partition_support; /* 160 */
u8 raw_rpmb_size_mult; /* 168 */
u8 raw_erased_mem_count; /* 181 */
u8 raw_ext_csd_structure; /* 194 */
u8 raw_card_type; /* 196 */
......@@ -206,6 +207,7 @@ struct mmc_part {
#define MMC_BLK_DATA_AREA_MAIN (1<<0)
#define MMC_BLK_DATA_AREA_BOOT (1<<1)
#define MMC_BLK_DATA_AREA_GP (1<<2)
#define MMC_BLK_DATA_AREA_RPMB (1<<3)
};
/*
......
include/linux/mmc/core.h
View file @ 11b84c58
......@@ -170,6 +170,8 @@ extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
extern unsigned int mmc_calc_max_discard(struct mmc_card *card);
extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
bool is_rel_write);
extern int mmc_hw_reset(struct mmc_host *host);
extern int mmc_hw_reset_check(struct mmc_host *host);
extern int mmc_can_reset(struct mmc_card *card);
......
include/linux/mmc/dw_mmc.h
View file @ 11b84c58
......@@ -229,8 +229,9 @@ struct dw_mci_board {
u32 quirks; /* Workaround / Quirk flags */
unsigned int bus_hz; /* Clock speed at the cclk_in pad */
unsigned int caps; /* Capabilities */
unsigned int caps2; /* More capabilities */
u32 caps; /* Capabilities */
u32 caps2; /* More capabilities */
u32 pm_caps; /* PM capabilities */
/*
* Override fifo depth. If 0, autodetect it from the FIFOTH register,
* but note that this may not be reliable after a bootloader has used
......
include/linux/mmc/host.h
View file @ 11b84c58
......@@ -53,12 +53,12 @@ struct mmc_ios {
#define MMC_TIMING_LEGACY 0
#define MMC_TIMING_MMC_HS 1
#define MMC_TIMING_SD_HS 2
#define MMC_TIMING_UHS_SDR12 MMC_TIMING_LEGACY
#define MMC_TIMING_UHS_SDR25 MMC_TIMING_SD_HS
#define MMC_TIMING_UHS_SDR50 3
#define MMC_TIMING_UHS_SDR104 4
#define MMC_TIMING_UHS_DDR50 5
#define MMC_TIMING_MMC_HS200 6
#define MMC_TIMING_UHS_SDR12 3
#define MMC_TIMING_UHS_SDR25 4
#define MMC_TIMING_UHS_SDR50 5
#define MMC_TIMING_UHS_SDR104 6
#define MMC_TIMING_UHS_DDR50 7
#define MMC_TIMING_MMC_HS200 8
#define MMC_SDR_MODE 0
#define MMC_1_2V_DDR_MODE 1
......@@ -136,6 +136,7 @@ struct mmc_host_ops {
void (*enable_preset_value)(struct mmc_host *host, bool enable);
int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv);
void (*hw_reset)(struct mmc_host *host);
void (*card_event)(struct mmc_host *host);
};
struct mmc_card;
......@@ -211,7 +212,7 @@ struct mmc_host {
#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
unsigned long caps; /* Host capabilities */
u32 caps; /* Host capabilities */
#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
......@@ -241,7 +242,7 @@ struct mmc_host {
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
unsigned int caps2; /* More host capabilities */
u32 caps2; /* More host capabilities */
#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */
......
include/linux/mmc/mmc.h
View file @ 11b84c58
......@@ -286,6 +286,7 @@ struct _mmc_csd {
#define EXT_CSD_BKOPS_START 164 /* W */
#define EXT_CSD_SANITIZE_START 165 /* W */
#define EXT_CSD_WR_REL_PARAM 166 /* RO */
#define EXT_CSD_RPMB_MULT 168 /* RO */
#define EXT_CSD_BOOT_WP 173 /* R/W */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_PART_CONFIG 179 /* R/W */
......@@ -339,6 +340,7 @@ struct _mmc_csd {
#define EXT_CSD_PART_CONFIG_ACC_MASK (0x7)
#define EXT_CSD_PART_CONFIG_ACC_BOOT0 (0x1)
#define EXT_CSD_PART_CONFIG_ACC_RPMB (0x3)
#define EXT_CSD_PART_CONFIG_ACC_GP0 (0x4)
#define EXT_CSD_PART_SUPPORT_PART_EN (0x1)
......
include/linux/mmc/mxs-mmc.h deleted 100644 → 0
View file @ 29594404
/*
* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __LINUX_MMC_MXS_MMC_H__
#define __LINUX_MMC_MXS_MMC_H__
struct mxs_mmc_platform_data {
int wp_gpio; /* write protect pin */
unsigned int flags;
#define SLOTF_4_BIT_CAPABLE (1 << 0)
#define SLOTF_8_BIT_CAPABLE (1 << 1)
};
#endif /* __LINUX_MMC_MXS_MMC_H__ */
include/linux/mmc/sdhci.h
View file @ 11b84c58
......@@ -92,6 +92,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0)
#define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1)
/* The system physically doesn't support 1.8v, even if the host does */
#define SDHCI_QUIRK2_NO_1_8_V (1<<2)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
......@@ -158,8 +160,8 @@ struct sdhci_host {
struct timer_list timer; /* Timer for timeouts */
unsigned int caps; /* Alternative CAPABILITY_0 */
unsigned int caps1; /* Alternative CAPABILITY_1 */
u32 caps; /* Alternative CAPABILITY_0 */
u32 caps1; /* Alternative CAPABILITY_1 */
unsigned int ocr_avail_sdio; /* OCR bit masks */
unsigned int ocr_avail_sd;
......
include/linux/platform_data/pxa_sdhci.h
View file @ 11b84c58
......@@ -38,6 +38,7 @@
* @max_speed: the maximum speed supported
* @host_caps: Standard MMC host capabilities bit field.
* @quirks: quirks of platfrom
* @quirks2: quirks2 of platfrom
* @pm_caps: pm_caps of platfrom
*/
struct sdhci_pxa_platdata {
......@@ -48,9 +49,10 @@ struct sdhci_pxa_platdata {
unsigned int ext_cd_gpio;
bool ext_cd_gpio_invert;
unsigned int max_speed;
unsigned int host_caps;
unsigned int host_caps2;
u32 host_caps;
u32 host_caps2;
unsigned int quirks;
unsigned int quirks2;
unsigned int pm_caps;
};
......
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