Commit f234012f authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  sdhci: remove needless double parenthesis
  sdhci: Specific quirk vor VIA SDHCI controller in VX855ES
  s3cmci: fix dma configuration call
  mmc: Add new via-sdmmc host controller driver
  sdhci: Add support for hosts that are only capable of 1-bit transfers
  MAINTAINERS: add myself as atmel-mci maintainer (sd/mmc interface)
  sdhci: Add SDHCI_QUIRK_NO_MULTIBLOCK quirk
  sdhci: Add better ADMA error reporting
  sdhci-s3c: Samsung S3C based SDHCI controller glue
parents 00d94a6a 11a2f1b7
No related merge requests found
...@@ -10,6 +10,8 @@ Required properties: ...@@ -10,6 +10,8 @@ Required properties:
- interrupts : should contain eSDHC interrupt. - interrupts : should contain eSDHC interrupt.
- interrupt-parent : interrupt source phandle. - interrupt-parent : interrupt source phandle.
- clock-frequency : specifies eSDHC base clock frequency. - clock-frequency : specifies eSDHC base clock frequency.
- sdhci,1-bit-only : (optional) specifies that a controller can
only handle 1-bit data transfers.
Example: Example:
......
...@@ -1010,6 +1010,13 @@ W: http://www.at91.com/ ...@@ -1010,6 +1010,13 @@ W: http://www.at91.com/
S: Maintained S: Maintained
F: drivers/mmc/host/at91_mci.c F: drivers/mmc/host/at91_mci.c
ATMEL AT91 / AT32 MCI DRIVER
P: Nicolas Ferre
M: nicolas.ferre@atmel.com
S: Maintained
F: drivers/mmc/host/atmel-mci.c
F: drivers/mmc/host/atmel-mci-regs.h
ATMEL AT91 / AT32 SERIAL DRIVER ATMEL AT91 / AT32 SERIAL DRIVER
P: Haavard Skinnemoen P: Haavard Skinnemoen
M: hskinnemoen@atmel.com M: hskinnemoen@atmel.com
...@@ -5094,6 +5101,13 @@ L: sdhci-devel@lists.ossman.eu ...@@ -5094,6 +5101,13 @@ L: sdhci-devel@lists.ossman.eu
S: Maintained S: Maintained
F: drivers/mmc/host/sdhci.* F: drivers/mmc/host/sdhci.*
SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) SAMSUNG DRIVER
P: Ben Dooks
M: ben-linux@fluff.org
L: sdhci-devel@lists.ossman.eu
S: Maintained
F: drivers/mmc/host/sdhci-s3c.c
SECURITY SUBSYSTEM SECURITY SUBSYSTEM
P: James Morris P: James Morris
M: jmorris@namei.org M: jmorris@namei.org
...@@ -6216,6 +6230,14 @@ S: Maintained ...@@ -6216,6 +6230,14 @@ S: Maintained
F: Documentation/i2c/busses/i2c-viapro F: Documentation/i2c/busses/i2c-viapro
F: drivers/i2c/busses/i2c-viapro.c F: drivers/i2c/busses/i2c-viapro.c
VIA SD/MMC CARD CONTROLLER DRIVER
P: Joseph Chan
M: JosephChan@via.com.tw
P: Harald Welte
M: HaraldWelte@viatech.com
S: Maintained
F: drivers/mmc/host/via-sdmmc.c
VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER
P: Joseph Chan P: Joseph Chan
M: JosephChan@via.com.tw M: JosephChan@via.com.tw
......
...@@ -94,6 +94,31 @@ config MMC_SDHCI_PLTFM ...@@ -94,6 +94,31 @@ config MMC_SDHCI_PLTFM
If unsure, say N. If unsure, say N.
config MMC_SDHCI_S3C
tristate "SDHCI support on Samsung S3C SoC"
depends on MMC_SDHCI && (PLAT_S3C24XX || PLAT_S3C64XX)
help
This selects the Secure Digital Host Controller Interface (SDHCI)
often referrered to as the HSMMC block in some of the Samsung S3C
range of SoC.
Note, due to the problems with DMA, the DMA support is only
available with CONFIG_EXPERIMENTAL is selected.
If you have a controller with this interface, say Y or M here.
If unsure, say N.
config MMC_SDHCI_S3C_DMA
bool "DMA support on S3C SDHCI"
depends on MMC_SDHCI_S3C && EXPERIMENTAL
help
Enable DMA support on the Samsung S3C SDHCI glue. The DMA
has proved to be problematic if the controller encounters
certain errors, and thus should be treated with care.
YMMV.
config MMC_OMAP config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support" tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP depends on ARCH_OMAP
...@@ -265,3 +290,14 @@ config MMC_CB710 ...@@ -265,3 +290,14 @@ config MMC_CB710
This driver can also be built as a module. If so, the module This driver can also be built as a module. If so, the module
will be called cb710-mmc. will be called cb710-mmc.
config MMC_VIA_SDMMC
tristate "VIA SD/MMC Card Reader Driver"
depends on PCI
help
This selects the VIA SD/MMC Card Reader driver, say Y or M here.
VIA provides one multi-functional card reader which integrated into
some motherboards manufactured by VIA. This card reader supports
SD/MMC/SDHC.
If you have a controller with this interface, say Y or M here.
If unsure, say N.
...@@ -15,6 +15,7 @@ obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o ...@@ -15,6 +15,7 @@ obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o
obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o obj-$(CONFIG_MMC_OMAP) += omap.o
...@@ -31,6 +32,7 @@ obj-$(CONFIG_MMC_S3C) += s3cmci.o ...@@ -31,6 +32,7 @@ obj-$(CONFIG_MMC_S3C) += s3cmci.o
obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o
obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o
obj-$(CONFIG_MMC_CB710) += cb710-mmc.o obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o
ifeq ($(CONFIG_CB710_DEBUG),y) ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG CFLAGS-cb710-mmc += -DDEBUG
......
...@@ -794,7 +794,7 @@ static void s3cmci_dma_setup(struct s3cmci_host *host, ...@@ -794,7 +794,7 @@ static void s3cmci_dma_setup(struct s3cmci_host *host,
host->mem->start + host->sdidata); host->mem->start + host->sdidata);
if (!setup_ok) { if (!setup_ok) {
s3c2410_dma_config(host->dma, 4, 0); s3c2410_dma_config(host->dma, 4);
s3c2410_dma_set_buffdone_fn(host->dma, s3c2410_dma_set_buffdone_fn(host->dma,
s3cmci_dma_done_callback); s3cmci_dma_done_callback);
s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART); s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART);
......
...@@ -250,6 +250,9 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev, ...@@ -250,6 +250,9 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
host->ops = &sdhci_of_data->ops; host->ops = &sdhci_of_data->ops;
} }
if (of_get_property(np, "sdhci,1-bit-only", NULL))
host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
clk = of_get_property(np, "clock-frequency", &size); clk = of_get_property(np, "clock-frequency", &size);
if (clk && size == sizeof(*clk) && *clk) if (clk && size == sizeof(*clk) && *clk)
of_host->clock = *clk; of_host->clock = *clk;
......
...@@ -284,6 +284,18 @@ static const struct sdhci_pci_fixes sdhci_jmicron = { ...@@ -284,6 +284,18 @@ static const struct sdhci_pci_fixes sdhci_jmicron = {
.resume = jmicron_resume, .resume = jmicron_resume,
}; };
static int via_probe(struct sdhci_pci_chip *chip)
{
if (chip->pdev->revision == 0x10)
chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
return 0;
}
static const struct sdhci_pci_fixes sdhci_via = {
.probe = via_probe,
};
static const struct pci_device_id pci_ids[] __devinitdata = { static const struct pci_device_id pci_ids[] __devinitdata = {
{ {
.vendor = PCI_VENDOR_ID_RICOH, .vendor = PCI_VENDOR_ID_RICOH,
...@@ -349,6 +361,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = { ...@@ -349,6 +361,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
.driver_data = (kernel_ulong_t)&sdhci_jmicron, .driver_data = (kernel_ulong_t)&sdhci_jmicron,
}, },
{
.vendor = PCI_VENDOR_ID_VIA,
.device = 0x95d0,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (kernel_ulong_t)&sdhci_via,
},
{ /* Generic SD host controller */ { /* Generic SD host controller */
PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
}, },
......
/* linux/drivers/mmc/host/sdhci-s3c.c
*
* Copyright 2008 Openmoko Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* SDHCI (HSMMC) support for Samsung SoC
*
* 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/delay.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/mmc/host.h>
#include <plat/sdhci.h>
#include <plat/regs-sdhci.h>
#include "sdhci.h"
#define MAX_BUS_CLK (4)
/**
* struct sdhci_s3c - S3C SDHCI instance
* @host: The SDHCI host created
* @pdev: The platform device we where created from.
* @ioarea: The resource created when we claimed the IO area.
* @pdata: The platform data for this controller.
* @cur_clk: The index of the current bus clock.
* @clk_io: The clock for the internal bus interface.
* @clk_bus: The clocks that are available for the SD/MMC bus clock.
*/
struct sdhci_s3c {
struct sdhci_host *host;
struct platform_device *pdev;
struct resource *ioarea;
struct s3c_sdhci_platdata *pdata;
unsigned int cur_clk;
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
};
static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
{
return sdhci_priv(host);
}
/**
* get_curclk - convert ctrl2 register to clock source number
* @ctrl2: Control2 register value.
*/
static u32 get_curclk(u32 ctrl2)
{
ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl2 >>= S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
return ctrl2;
}
static void sdhci_s3c_check_sclk(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
if (get_curclk(tmp) != ourhost->cur_clk) {
dev_dbg(&ourhost->pdev->dev, "restored ctrl2 clock setting\n");
tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
writel(tmp, host->ioaddr + 0x80);
}
}
/**
* sdhci_s3c_get_max_clk - callback to get maximum clock frequency.
* @host: The SDHCI host instance.
*
* Callback to return the maximum clock rate acheivable by the controller.
*/
static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
struct clk *busclk;
unsigned int rate, max;
int clk;
/* note, a reset will reset the clock source */
sdhci_s3c_check_sclk(host);
for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
busclk = ourhost->clk_bus[clk];
if (!busclk)
continue;
rate = clk_get_rate(busclk);
if (rate > max)
max = rate;
}
return max;
}
static unsigned int sdhci_s3c_get_timeout_clk(struct sdhci_host *host)
{
return sdhci_s3c_get_max_clk(host) / 1000000;
}
/**
* sdhci_s3c_consider_clock - consider one the bus clocks for current setting
* @ourhost: Our SDHCI instance.
* @src: The source clock index.
* @wanted: The clock frequency wanted.
*/
static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
unsigned int src,
unsigned int wanted)
{
unsigned long rate;
struct clk *clksrc = ourhost->clk_bus[src];
int div;
if (!clksrc)
return UINT_MAX;
rate = clk_get_rate(clksrc);
for (div = 1; div < 256; div *= 2) {
if ((rate / div) <= wanted)
break;
}
dev_dbg(&ourhost->pdev->dev, "clk %d: rate %ld, want %d, got %ld\n",
src, rate, wanted, rate / div);
return (wanted - (rate / div));
}
/**
* sdhci_s3c_set_clock - callback on clock change
* @host: The SDHCI host being changed
* @clock: The clock rate being requested.
*
* When the card's clock is going to be changed, look at the new frequency
* and find the best clock source to go with it.
*/
static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
{
struct sdhci_s3c *ourhost = to_s3c(host);
unsigned int best = UINT_MAX;
unsigned int delta;
int best_src = 0;
int src;
u32 ctrl;
/* don't bother if the clock is going off. */
if (clock == 0)
return;
for (src = 0; src < MAX_BUS_CLK; src++) {
delta = sdhci_s3c_consider_clock(ourhost, src, clock);
if (delta < best) {
best = delta;
best_src = src;
}
}
dev_dbg(&ourhost->pdev->dev,
"selected source %d, clock %d, delta %d\n",
best_src, clock, best);
/* select the new clock source */
if (ourhost->cur_clk != best_src) {
struct clk *clk = ourhost->clk_bus[best_src];
/* turn clock off to card before changing clock source */
writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
ourhost->cur_clk = best_src;
host->max_clk = clk_get_rate(clk);
host->timeout_clk = sdhci_s3c_get_timeout_clk(host);
ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
}
/* reconfigure the hardware for new clock rate */
{
struct mmc_ios ios;
ios.clock = clock;
if (ourhost->pdata->cfg_card)
(ourhost->pdata->cfg_card)(ourhost->pdev, host->ioaddr,
&ios, NULL);
}
}
static struct sdhci_ops sdhci_s3c_ops = {
.get_max_clock = sdhci_s3c_get_max_clk,
.get_timeout_clock = sdhci_s3c_get_timeout_clk,
.set_clock = sdhci_s3c_set_clock,
};
static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
{
struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
struct sdhci_host *host;
struct sdhci_s3c *sc;
struct resource *res;
int ret, irq, ptr, clks;
if (!pdata) {
dev_err(dev, "no device data specified\n");
return -ENOENT;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "no irq specified\n");
return irq;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "no memory specified\n");
return -ENOENT;
}
host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
if (IS_ERR(host)) {
dev_err(dev, "sdhci_alloc_host() failed\n");
return PTR_ERR(host);
}
sc = sdhci_priv(host);
sc->host = host;
sc->pdev = pdev;
sc->pdata = pdata;
platform_set_drvdata(pdev, host);
sc->clk_io = clk_get(dev, "hsmmc");
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;
}
/* enable the local io clock and keep it running for the moment. */
clk_enable(sc->clk_io);
for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
struct clk *clk;
char *name = pdata->clocks[ptr];
if (name == NULL)
continue;
clk = clk_get(dev, name);
if (IS_ERR(clk)) {
dev_err(dev, "failed to get clock %s\n", name);
continue;
}
clks++;
sc->clk_bus[ptr] = clk;
clk_enable(clk);
dev_info(dev, "clock source %d: %s (%ld Hz)\n",
ptr, name, clk_get_rate(clk));
}
if (clks == 0) {
dev_err(dev, "failed to find any bus clocks\n");
ret = -ENOENT;
goto err_no_busclks;
}
sc->ioarea = request_mem_region(res->start, resource_size(res),
mmc_hostname(host->mmc));
if (!sc->ioarea) {
dev_err(dev, "failed to reserve register area\n");
ret = -ENXIO;
goto err_req_regs;
}
host->ioaddr = ioremap_nocache(res->start, resource_size(res));
if (!host->ioaddr) {
dev_err(dev, "failed to map registers\n");
ret = -ENXIO;
goto err_req_regs;
}
/* Ensure we have minimal gpio selected CMD/CLK/Detect */
if (pdata->cfg_gpio)
pdata->cfg_gpio(pdev, pdata->max_width);
host->hw_name = "samsung-hsmmc";
host->ops = &sdhci_s3c_ops;
host->quirks = 0;
host->irq = irq;
/* Setup quirks for the controller */
/* Currently with ADMA enabled we are getting some length
* interrupts that are not being dealt with, do disable
* ADMA until this is sorted out. */
host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
host->quirks |= SDHCI_QUIRK_32BIT_ADMA_SIZE;
#ifndef CONFIG_MMC_SDHCI_S3C_DMA
/* we currently see overruns on errors, so disable the SDMA
* support as well. */
host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
/* PIO currently has problems with multi-block IO */
host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
#endif /* CONFIG_MMC_SDHCI_S3C_DMA */
/* It seems we do not get an DATA transfer complete on non-busy
* transfers, not sure if this is a problem with this specific
* SDHCI block, or a missing configuration that needs to be set. */
host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
SDHCI_QUIRK_32BIT_DMA_SIZE);
ret = sdhci_add_host(host);
if (ret) {
dev_err(dev, "sdhci_add_host() failed\n");
goto err_add_host;
}
return 0;
err_add_host:
release_resource(sc->ioarea);
kfree(sc->ioarea);
err_req_regs:
for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
clk_disable(sc->clk_bus[ptr]);
clk_put(sc->clk_bus[ptr]);
}
err_no_busclks:
clk_disable(sc->clk_io);
clk_put(sc->clk_io);
err_io_clk:
sdhci_free_host(host);
return ret;
}
static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
{
return 0;
}
#ifdef CONFIG_PM
static int sdhci_s3c_suspend(struct platform_device *dev, pm_message_t pm)
{
struct sdhci_host *host = platform_get_drvdata(dev);
sdhci_suspend_host(host, pm);
return 0;
}
static int sdhci_s3c_resume(struct platform_device *dev)
{
struct sdhci_host *host = platform_get_drvdata(dev);
sdhci_resume_host(host);
return 0;
}
#else
#define sdhci_s3c_suspend NULL
#define sdhci_s3c_resume NULL
#endif
static struct platform_driver sdhci_s3c_driver = {
.probe = sdhci_s3c_probe,
.remove = __devexit_p(sdhci_s3c_remove),
.suspend = sdhci_s3c_suspend,
.resume = sdhci_s3c_resume,
.driver = {
.owner = THIS_MODULE,
.name = "s3c-sdhci",
},
};
static int __init sdhci_s3c_init(void)
{
return platform_driver_register(&sdhci_s3c_driver);
}
static void __exit sdhci_s3c_exit(void)
{
platform_driver_unregister(&sdhci_s3c_driver);
}
module_init(sdhci_s3c_init);
module_exit(sdhci_s3c_exit);
MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:s3c-sdhci");
...@@ -584,7 +584,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data) ...@@ -584,7 +584,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
* longer to time out, but that's much better than having a too-short * longer to time out, but that's much better than having a too-short
* timeout value. * timeout value.
*/ */
if ((host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)) if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)
return 0xE; return 0xE;
/* timeout in us */ /* timeout in us */
...@@ -1051,12 +1051,19 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) ...@@ -1051,12 +1051,19 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
* At least the Marvell CaFe chip gets confused if we set the voltage * At least the Marvell CaFe chip gets confused if we set the voltage
* and set turn on power at the same time, so set the voltage first. * and set turn on power at the same time, so set the voltage first.
*/ */
if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)) if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
pwr |= SDHCI_POWER_ON; pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
/*
* Some controllers need an extra 10ms delay of 10ms before they
* can apply clock after applying power
*/
if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
mdelay(10);
} }
/*****************************************************************************\ /*****************************************************************************\
...@@ -1382,6 +1389,35 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) ...@@ -1382,6 +1389,35 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
sdhci_finish_command(host); sdhci_finish_command(host);
} }
#ifdef DEBUG
static void sdhci_show_adma_error(struct sdhci_host *host)
{
const char *name = mmc_hostname(host->mmc);
u8 *desc = host->adma_desc;
__le32 *dma;
__le16 *len;
u8 attr;
sdhci_dumpregs(host);
while (true) {
dma = (__le32 *)(desc + 4);
len = (__le16 *)(desc + 2);
attr = *desc;
DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr);
desc += 8;
if (attr & 2)
break;
}
}
#else
static void sdhci_show_adma_error(struct sdhci_host *host) { }
#endif
static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
{ {
BUG_ON(intmask == 0); BUG_ON(intmask == 0);
...@@ -1411,8 +1447,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) ...@@ -1411,8 +1447,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
host->data->error = -ETIMEDOUT; host->data->error = -ETIMEDOUT;
else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT)) else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT))
host->data->error = -EILSEQ; host->data->error = -EILSEQ;
else if (intmask & SDHCI_INT_ADMA_ERROR) else if (intmask & SDHCI_INT_ADMA_ERROR) {
printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc));
sdhci_show_adma_error(host);
host->data->error = -EIO; host->data->error = -EIO;
}
if (host->data->error) if (host->data->error)
sdhci_finish_data(host); sdhci_finish_data(host);
...@@ -1729,7 +1768,10 @@ int sdhci_add_host(struct sdhci_host *host) ...@@ -1729,7 +1768,10 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->ops = &sdhci_ops; mmc->ops = &sdhci_ops;
mmc->f_min = host->max_clk / 256; mmc->f_min = host->max_clk / 256;
mmc->f_max = host->max_clk; mmc->f_max = host->max_clk;
mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; mmc->caps = MMC_CAP_SDIO_IRQ;
if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
mmc->caps |= MMC_CAP_4_BIT_DATA;
if (caps & SDHCI_CAN_DO_HISPD) if (caps & SDHCI_CAN_DO_HISPD)
mmc->caps |= MMC_CAP_SD_HIGHSPEED; mmc->caps |= MMC_CAP_SD_HIGHSPEED;
...@@ -1802,7 +1844,7 @@ int sdhci_add_host(struct sdhci_host *host) ...@@ -1802,7 +1844,7 @@ int sdhci_add_host(struct sdhci_host *host)
/* /*
* Maximum block count. * Maximum block count.
*/ */
mmc->max_blk_count = 65535; mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;
/* /*
* Init tasklets. * Init tasklets.
......
...@@ -226,6 +226,12 @@ struct sdhci_host { ...@@ -226,6 +226,12 @@ struct sdhci_host {
#define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19) #define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19)
/* Controller has to be forced to use block size of 2048 bytes */ /* Controller has to be forced to use block size of 2048 bytes */
#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20) #define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20)
/* Controller cannot do multi-block transfers */
#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21)
/* Controller can only handle 1-bit data transfers */
#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22)
/* Controller needs 10ms delay between applying power and clock */
#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
int irq; /* Device IRQ */ int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */ void __iomem * ioaddr; /* Mapped address */
......
/*
* drivers/mmc/host/via-sdmmc.c - VIA SD/MMC Card Reader driver
* Copyright (c) 2008, VIA Technologies 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 as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*/
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/highmem.h>
#include <linux/delay.h>
#include <linux/mmc/host.h>
#define DRV_NAME "via_sdmmc"
#define PCI_DEVICE_ID_VIA_9530 0x9530
#define VIA_CRDR_SDC_OFF 0x200
#define VIA_CRDR_DDMA_OFF 0x400
#define VIA_CRDR_PCICTRL_OFF 0x600
#define VIA_CRDR_MIN_CLOCK 375000
#define VIA_CRDR_MAX_CLOCK 48000000
/*
* PCI registers
*/
#define VIA_CRDR_PCI_WORK_MODE 0x40
#define VIA_CRDR_PCI_DBG_MODE 0x41
/*
* SDC MMIO Registers
*/
#define VIA_CRDR_SDCTRL 0x0
#define VIA_CRDR_SDCTRL_START 0x01
#define VIA_CRDR_SDCTRL_WRITE 0x04
#define VIA_CRDR_SDCTRL_SINGLE_WR 0x10
#define VIA_CRDR_SDCTRL_SINGLE_RD 0x20
#define VIA_CRDR_SDCTRL_MULTI_WR 0x30
#define VIA_CRDR_SDCTRL_MULTI_RD 0x40
#define VIA_CRDR_SDCTRL_STOP 0x70
#define VIA_CRDR_SDCTRL_RSP_NONE 0x0
#define VIA_CRDR_SDCTRL_RSP_R1 0x10000
#define VIA_CRDR_SDCTRL_RSP_R2 0x20000
#define VIA_CRDR_SDCTRL_RSP_R3 0x30000
#define VIA_CRDR_SDCTRL_RSP_R1B 0x90000
#define VIA_CRDR_SDCARG 0x4
#define VIA_CRDR_SDBUSMODE 0x8
#define VIA_CRDR_SDMODE_4BIT 0x02
#define VIA_CRDR_SDMODE_CLK_ON 0x40
#define VIA_CRDR_SDBLKLEN 0xc
/*
* Bit 0 -Bit 10 : Block length. So, the maximum block length should be 2048.
* Bit 11 - Bit 13 : Reserved.
* GPIDET : Select GPI pin to detect card, GPI means CR_CD# in top design.
* INTEN : Enable SD host interrupt.
* Bit 16 - Bit 31 : Block count. So, the maximun block count should be 65536.
*/
#define VIA_CRDR_SDBLKLEN_GPIDET 0x2000
#define VIA_CRDR_SDBLKLEN_INTEN 0x8000
#define VIA_CRDR_MAX_BLOCK_COUNT 65536
#define VIA_CRDR_MAX_BLOCK_LENGTH 2048
#define VIA_CRDR_SDRESP0 0x10
#define VIA_CRDR_SDRESP1 0x14
#define VIA_CRDR_SDRESP2 0x18
#define VIA_CRDR_SDRESP3 0x1c
#define VIA_CRDR_SDCURBLKCNT 0x20
#define VIA_CRDR_SDINTMASK 0x24
/*
* MBDIE : Multiple Blocks transfer Done Interrupt Enable
* BDDIE : Block Data transfer Done Interrupt Enable
* CIRIE : Card Insertion or Removal Interrupt Enable
* CRDIE : Command-Response transfer Done Interrupt Enable
* CRTOIE : Command-Response response TimeOut Interrupt Enable
* ASCRDIE : Auto Stop Command-Response transfer Done Interrupt Enable
* DTIE : Data access Timeout Interrupt Enable
* SCIE : reSponse CRC error Interrupt Enable
* RCIE : Read data CRC error Interrupt Enable
* WCIE : Write data CRC error Interrupt Enable
*/
#define VIA_CRDR_SDINTMASK_MBDIE 0x10
#define VIA_CRDR_SDINTMASK_BDDIE 0x20
#define VIA_CRDR_SDINTMASK_CIRIE 0x80
#define VIA_CRDR_SDINTMASK_CRDIE 0x200
#define VIA_CRDR_SDINTMASK_CRTOIE 0x400
#define VIA_CRDR_SDINTMASK_ASCRDIE 0x800
#define VIA_CRDR_SDINTMASK_DTIE 0x1000
#define VIA_CRDR_SDINTMASK_SCIE 0x2000
#define VIA_CRDR_SDINTMASK_RCIE 0x4000
#define VIA_CRDR_SDINTMASK_WCIE 0x8000
#define VIA_CRDR_SDACTIVE_INTMASK \
(VIA_CRDR_SDINTMASK_MBDIE | VIA_CRDR_SDINTMASK_CIRIE \
| VIA_CRDR_SDINTMASK_CRDIE | VIA_CRDR_SDINTMASK_CRTOIE \
| VIA_CRDR_SDINTMASK_DTIE | VIA_CRDR_SDINTMASK_SCIE \
| VIA_CRDR_SDINTMASK_RCIE | VIA_CRDR_SDINTMASK_WCIE)
#define VIA_CRDR_SDSTATUS 0x28
/*
* CECC : Reserved
* WP : SD card Write Protect status
* SLOTD : Reserved
* SLOTG : SD SLOT status(Gpi pin status)
* MBD : Multiple Blocks transfer Done interrupt status
* BDD : Block Data transfer Done interrupt status
* CD : Reserved
* CIR : Card Insertion or Removal interrupt detected on GPI pin
* IO : Reserved
* CRD : Command-Response transfer Done interrupt status
* CRTO : Command-Response response TimeOut interrupt status
* ASCRDIE : Auto Stop Command-Response transfer Done interrupt status
* DT : Data access Timeout interrupt status
* SC : reSponse CRC error interrupt status
* RC : Read data CRC error interrupt status
* WC : Write data CRC error interrupt status
*/
#define VIA_CRDR_SDSTS_CECC 0x01
#define VIA_CRDR_SDSTS_WP 0x02
#define VIA_CRDR_SDSTS_SLOTD 0x04
#define VIA_CRDR_SDSTS_SLOTG 0x08
#define VIA_CRDR_SDSTS_MBD 0x10
#define VIA_CRDR_SDSTS_BDD 0x20
#define VIA_CRDR_SDSTS_CD 0x40
#define VIA_CRDR_SDSTS_CIR 0x80
#define VIA_CRDR_SDSTS_IO 0x100
#define VIA_CRDR_SDSTS_CRD 0x200
#define VIA_CRDR_SDSTS_CRTO 0x400
#define VIA_CRDR_SDSTS_ASCRDIE 0x800
#define VIA_CRDR_SDSTS_DT 0x1000
#define VIA_CRDR_SDSTS_SC 0x2000
#define VIA_CRDR_SDSTS_RC 0x4000
#define VIA_CRDR_SDSTS_WC 0x8000
#define VIA_CRDR_SDSTS_IGN_MASK\
(VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_IO)
#define VIA_CRDR_SDSTS_INT_MASK \
(VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_CD \
| VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_IO | VIA_CRDR_SDSTS_CRD \
| VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
| VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
#define VIA_CRDR_SDSTS_W1C_MASK \
(VIA_CRDR_SDSTS_CECC | VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD \
| VIA_CRDR_SDSTS_CD | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_CRD \
| VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
| VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
#define VIA_CRDR_SDSTS_CMD_MASK \
(VIA_CRDR_SDSTS_CRD | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_SC)
#define VIA_CRDR_SDSTS_DATA_MASK\
(VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_DT \
| VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
#define VIA_CRDR_SDSTATUS2 0x2a
/*
* CFE : Enable SD host automatic Clock FReezing
*/
#define VIA_CRDR_SDSTS_CFE 0x80
#define VIA_CRDR_SDRSPTMO 0x2C
#define VIA_CRDR_SDCLKSEL 0x30
#define VIA_CRDR_SDEXTCTRL 0x34
#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SD 0x01
#define VIS_CRDR_SDEXTCTRL_SHIFT_9 0x02
#define VIS_CRDR_SDEXTCTRL_MMC_8BIT 0x04
#define VIS_CRDR_SDEXTCTRL_RELD_BLK 0x08
#define VIS_CRDR_SDEXTCTRL_BAD_CMDA 0x10
#define VIS_CRDR_SDEXTCTRL_BAD_DATA 0x20
#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SPI 0x40
#define VIA_CRDR_SDEXTCTRL_HISPD 0x80
/* 0x38-0xFF reserved */
/*
* Data DMA Control Registers
*/
#define VIA_CRDR_DMABASEADD 0x0
#define VIA_CRDR_DMACOUNTER 0x4
#define VIA_CRDR_DMACTRL 0x8
/*
* DIR :Transaction Direction
* 0 : From card to memory
* 1 : From memory to card
*/
#define VIA_CRDR_DMACTRL_DIR 0x100
#define VIA_CRDR_DMACTRL_ENIRQ 0x10000
#define VIA_CRDR_DMACTRL_SFTRST 0x1000000
#define VIA_CRDR_DMASTS 0xc
#define VIA_CRDR_DMASTART 0x10
/*0x14-0xFF reserved*/
/*
* PCI Control Registers
*/
/*0x0 - 0x1 reserved*/
#define VIA_CRDR_PCICLKGATT 0x2
/*
* SFTRST :
* 0 : Soft reset all the controller and it will be de-asserted automatically
* 1 : Soft reset is de-asserted
*/
#define VIA_CRDR_PCICLKGATT_SFTRST 0x01
/*
* 3V3 : Pad power select
* 0 : 1.8V
* 1 : 3.3V
* NOTE : No mater what the actual value should be, this bit always
* read as 0. This is a hardware bug.
*/
#define VIA_CRDR_PCICLKGATT_3V3 0x10
/*
* PAD_PWRON : Pad Power on/off select
* 0 : Power off
* 1 : Power on
* NOTE : No mater what the actual value should be, this bit always
* read as 0. This is a hardware bug.
*/
#define VIA_CRDR_PCICLKGATT_PAD_PWRON 0x20
#define VIA_CRDR_PCISDCCLK 0x5
#define VIA_CRDR_PCIDMACLK 0x7
#define VIA_CRDR_PCIDMACLK_SDC 0x2
#define VIA_CRDR_PCIINTCTRL 0x8
#define VIA_CRDR_PCIINTCTRL_SDCIRQEN 0x04
#define VIA_CRDR_PCIINTSTATUS 0x9
#define VIA_CRDR_PCIINTSTATUS_SDC 0x04
#define VIA_CRDR_PCITMOCTRL 0xa
#define VIA_CRDR_PCITMOCTRL_NO 0x0
#define VIA_CRDR_PCITMOCTRL_32US 0x1
#define VIA_CRDR_PCITMOCTRL_256US 0x2
#define VIA_CRDR_PCITMOCTRL_1024US 0x3
#define VIA_CRDR_PCITMOCTRL_256MS 0x4
#define VIA_CRDR_PCITMOCTRL_512MS 0x5
#define VIA_CRDR_PCITMOCTRL_1024MS 0x6
/*0xB-0xFF reserved*/
enum PCI_HOST_CLK_CONTROL {
PCI_CLK_375K = 0x03,
PCI_CLK_8M = 0x04,
PCI_CLK_12M = 0x00,
PCI_CLK_16M = 0x05,
PCI_CLK_24M = 0x01,
PCI_CLK_33M = 0x06,
PCI_CLK_48M = 0x02
};
struct sdhcreg {
u32 sdcontrol_reg;
u32 sdcmdarg_reg;
u32 sdbusmode_reg;
u32 sdblklen_reg;
u32 sdresp_reg[4];
u32 sdcurblkcnt_reg;
u32 sdintmask_reg;
u32 sdstatus_reg;
u32 sdrsptmo_reg;
u32 sdclksel_reg;
u32 sdextctrl_reg;
};
struct pcictrlreg {
u8 reserve[2];
u8 pciclkgat_reg;
u8 pcinfcclk_reg;
u8 pcimscclk_reg;
u8 pcisdclk_reg;
u8 pcicaclk_reg;
u8 pcidmaclk_reg;
u8 pciintctrl_reg;
u8 pciintstatus_reg;
u8 pcitmoctrl_reg;
u8 Resv;
};
struct via_crdr_mmc_host {
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
void __iomem *mmiobase;
void __iomem *sdhc_mmiobase;
void __iomem *ddma_mmiobase;
void __iomem *pcictrl_mmiobase;
struct pcictrlreg pm_pcictrl_reg;
struct sdhcreg pm_sdhc_reg;
struct work_struct carddet_work;
struct tasklet_struct finish_tasklet;
struct timer_list timer;
spinlock_t lock;
u8 power;
int reject;
unsigned int quirks;
};
/* some devices need a very long delay for power to stabilize */
#define VIA_CRDR_QUIRK_300MS_PWRDELAY 0x0001
static struct pci_device_id via_ids[] = {
{PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_9530,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0,},
{0,}
};
MODULE_DEVICE_TABLE(pci, via_ids);
static void via_print_sdchc(struct via_crdr_mmc_host *host)
{
void __iomem *addrbase = host->sdhc_mmiobase;
pr_debug("SDC MMIO Registers:\n");
pr_debug("SDCONTROL=%08x, SDCMDARG=%08x, SDBUSMODE=%08x\n",
readl(addrbase + VIA_CRDR_SDCTRL),
readl(addrbase + VIA_CRDR_SDCARG),
readl(addrbase + VIA_CRDR_SDBUSMODE));
pr_debug("SDBLKLEN=%08x, SDCURBLKCNT=%08x, SDINTMASK=%08x\n",
readl(addrbase + VIA_CRDR_SDBLKLEN),
readl(addrbase + VIA_CRDR_SDCURBLKCNT),
readl(addrbase + VIA_CRDR_SDINTMASK));
pr_debug("SDSTATUS=%08x, SDCLKSEL=%08x, SDEXTCTRL=%08x\n",
readl(addrbase + VIA_CRDR_SDSTATUS),
readl(addrbase + VIA_CRDR_SDCLKSEL),
readl(addrbase + VIA_CRDR_SDEXTCTRL));
}
static void via_print_pcictrl(struct via_crdr_mmc_host *host)
{
void __iomem *addrbase = host->pcictrl_mmiobase;
pr_debug("PCI Control Registers:\n");
pr_debug("PCICLKGATT=%02x, PCISDCCLK=%02x, PCIDMACLK=%02x\n",
readb(addrbase + VIA_CRDR_PCICLKGATT),
readb(addrbase + VIA_CRDR_PCISDCCLK),
readb(addrbase + VIA_CRDR_PCIDMACLK));
pr_debug("PCIINTCTRL=%02x, PCIINTSTATUS=%02x\n",
readb(addrbase + VIA_CRDR_PCIINTCTRL),
readb(addrbase + VIA_CRDR_PCIINTSTATUS));
}
static void via_save_pcictrlreg(struct via_crdr_mmc_host *host)
{
struct pcictrlreg *pm_pcictrl_reg;
void __iomem *addrbase;
pm_pcictrl_reg = &(host->pm_pcictrl_reg);
addrbase = host->pcictrl_mmiobase;
pm_pcictrl_reg->pciclkgat_reg = readb(addrbase + VIA_CRDR_PCICLKGATT);
pm_pcictrl_reg->pciclkgat_reg |=
VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
pm_pcictrl_reg->pcisdclk_reg = readb(addrbase + VIA_CRDR_PCISDCCLK);
pm_pcictrl_reg->pcidmaclk_reg = readb(addrbase + VIA_CRDR_PCIDMACLK);
pm_pcictrl_reg->pciintctrl_reg = readb(addrbase + VIA_CRDR_PCIINTCTRL);
pm_pcictrl_reg->pciintstatus_reg =
readb(addrbase + VIA_CRDR_PCIINTSTATUS);
pm_pcictrl_reg->pcitmoctrl_reg = readb(addrbase + VIA_CRDR_PCITMOCTRL);
}
static void via_restore_pcictrlreg(struct via_crdr_mmc_host *host)
{
struct pcictrlreg *pm_pcictrl_reg;
void __iomem *addrbase;
pm_pcictrl_reg = &(host->pm_pcictrl_reg);
addrbase = host->pcictrl_mmiobase;
writeb(pm_pcictrl_reg->pciclkgat_reg, addrbase + VIA_CRDR_PCICLKGATT);
writeb(pm_pcictrl_reg->pcisdclk_reg, addrbase + VIA_CRDR_PCISDCCLK);
writeb(pm_pcictrl_reg->pcidmaclk_reg, addrbase + VIA_CRDR_PCIDMACLK);
writeb(pm_pcictrl_reg->pciintctrl_reg, addrbase + VIA_CRDR_PCIINTCTRL);
writeb(pm_pcictrl_reg->pciintstatus_reg,
addrbase + VIA_CRDR_PCIINTSTATUS);
writeb(pm_pcictrl_reg->pcitmoctrl_reg, addrbase + VIA_CRDR_PCITMOCTRL);
}
static void via_save_sdcreg(struct via_crdr_mmc_host *host)
{
struct sdhcreg *pm_sdhc_reg;
void __iomem *addrbase;
pm_sdhc_reg = &(host->pm_sdhc_reg);
addrbase = host->sdhc_mmiobase;
pm_sdhc_reg->sdcontrol_reg = readl(addrbase + VIA_CRDR_SDCTRL);
pm_sdhc_reg->sdcmdarg_reg = readl(addrbase + VIA_CRDR_SDCARG);
pm_sdhc_reg->sdbusmode_reg = readl(addrbase + VIA_CRDR_SDBUSMODE);
pm_sdhc_reg->sdblklen_reg = readl(addrbase + VIA_CRDR_SDBLKLEN);
pm_sdhc_reg->sdcurblkcnt_reg = readl(addrbase + VIA_CRDR_SDCURBLKCNT);
pm_sdhc_reg->sdintmask_reg = readl(addrbase + VIA_CRDR_SDINTMASK);
pm_sdhc_reg->sdstatus_reg = readl(addrbase + VIA_CRDR_SDSTATUS);
pm_sdhc_reg->sdrsptmo_reg = readl(addrbase + VIA_CRDR_SDRSPTMO);
pm_sdhc_reg->sdclksel_reg = readl(addrbase + VIA_CRDR_SDCLKSEL);
pm_sdhc_reg->sdextctrl_reg = readl(addrbase + VIA_CRDR_SDEXTCTRL);
}
static void via_restore_sdcreg(struct via_crdr_mmc_host *host)
{
struct sdhcreg *pm_sdhc_reg;
void __iomem *addrbase;
pm_sdhc_reg = &(host->pm_sdhc_reg);
addrbase = host->sdhc_mmiobase;
writel(pm_sdhc_reg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
writel(pm_sdhc_reg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
writel(pm_sdhc_reg->sdbusmode_reg, addrbase + VIA_CRDR_SDBUSMODE);
writel(pm_sdhc_reg->sdblklen_reg, addrbase + VIA_CRDR_SDBLKLEN);
writel(pm_sdhc_reg->sdcurblkcnt_reg, addrbase + VIA_CRDR_SDCURBLKCNT);
writel(pm_sdhc_reg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
writel(pm_sdhc_reg->sdstatus_reg, addrbase + VIA_CRDR_SDSTATUS);
writel(pm_sdhc_reg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
writel(pm_sdhc_reg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
writel(pm_sdhc_reg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
}
static void via_pwron_sleep(struct via_crdr_mmc_host *sdhost)
{
if (sdhost->quirks & VIA_CRDR_QUIRK_300MS_PWRDELAY)
msleep(300);
else
msleep(3);
}
static void via_set_ddma(struct via_crdr_mmc_host *host,
dma_addr_t dmaaddr, u32 count, int dir, int enirq)
{
void __iomem *addrbase;
u32 ctrl_data = 0;
if (enirq)
ctrl_data |= VIA_CRDR_DMACTRL_ENIRQ;
if (dir)
ctrl_data |= VIA_CRDR_DMACTRL_DIR;
addrbase = host->ddma_mmiobase;
writel(dmaaddr, addrbase + VIA_CRDR_DMABASEADD);
writel(count, addrbase + VIA_CRDR_DMACOUNTER);
writel(ctrl_data, addrbase + VIA_CRDR_DMACTRL);
writel(0x01, addrbase + VIA_CRDR_DMASTART);
/* It seems that our DMA can not work normally with 375kHz clock */
/* FIXME: don't brute-force 8MHz but use PIO at 375kHz !! */
addrbase = host->pcictrl_mmiobase;
if (readb(addrbase + VIA_CRDR_PCISDCCLK) == PCI_CLK_375K) {
dev_info(host->mmc->parent, "forcing card speed to 8MHz\n");
writeb(PCI_CLK_8M, addrbase + VIA_CRDR_PCISDCCLK);
}
}
static void via_sdc_preparedata(struct via_crdr_mmc_host *host,
struct mmc_data *data)
{
void __iomem *addrbase;
u32 blk_reg;
int count;
WARN_ON(host->data);
/* Sanity checks */
BUG_ON(data->blksz > host->mmc->max_blk_size);
BUG_ON(data->blocks > host->mmc->max_blk_count);
host->data = data;
count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
((data->flags & MMC_DATA_READ) ?
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
BUG_ON(count != 1);
via_set_ddma(host, sg_dma_address(data->sg), sg_dma_len(data->sg),
(data->flags & MMC_DATA_WRITE) ? 1 : 0, 1);
addrbase = host->sdhc_mmiobase;
blk_reg = data->blksz - 1;
blk_reg |= VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
blk_reg |= (data->blocks) << 16;
writel(blk_reg, addrbase + VIA_CRDR_SDBLKLEN);
}
static void via_sdc_get_response(struct via_crdr_mmc_host *host,
struct mmc_command *cmd)
{
void __iomem *addrbase = host->sdhc_mmiobase;
u32 dwdata0 = readl(addrbase + VIA_CRDR_SDRESP0);
u32 dwdata1 = readl(addrbase + VIA_CRDR_SDRESP1);
u32 dwdata2 = readl(addrbase + VIA_CRDR_SDRESP2);
u32 dwdata3 = readl(addrbase + VIA_CRDR_SDRESP3);
if (cmd->flags & MMC_RSP_136) {
cmd->resp[0] = ((u8) (dwdata1)) |
(((u8) (dwdata0 >> 24)) << 8) |
(((u8) (dwdata0 >> 16)) << 16) |
(((u8) (dwdata0 >> 8)) << 24);
cmd->resp[1] = ((u8) (dwdata2)) |
(((u8) (dwdata1 >> 24)) << 8) |
(((u8) (dwdata1 >> 16)) << 16) |
(((u8) (dwdata1 >> 8)) << 24);
cmd->resp[2] = ((u8) (dwdata3)) |
(((u8) (dwdata2 >> 24)) << 8) |
(((u8) (dwdata2 >> 16)) << 16) |
(((u8) (dwdata2 >> 8)) << 24);
cmd->resp[3] = 0xff |
((((u8) (dwdata3 >> 24))) << 8) |
(((u8) (dwdata3 >> 16)) << 16) |
(((u8) (dwdata3 >> 8)) << 24);
} else {
dwdata0 >>= 8;
cmd->resp[0] = ((dwdata0 & 0xff) << 24) |
(((dwdata0 >> 8) & 0xff) << 16) |
(((dwdata0 >> 16) & 0xff) << 8) | (dwdata1 & 0xff);
dwdata1 >>= 8;
cmd->resp[1] = ((dwdata1 & 0xff) << 24) |
(((dwdata1 >> 8) & 0xff) << 16) |
(((dwdata1 >> 16) & 0xff) << 8);
}
}
static void via_sdc_send_command(struct via_crdr_mmc_host *host,
struct mmc_command *cmd)
{
void __iomem *addrbase;
struct mmc_data *data;
u32 cmdctrl = 0;
WARN_ON(host->cmd);
data = cmd->data;
mod_timer(&host->timer, jiffies + HZ);
host->cmd = cmd;
/*Command index*/
cmdctrl = cmd->opcode << 8;
/*Response type*/
switch (mmc_resp_type(cmd)) {
case MMC_RSP_NONE:
cmdctrl |= VIA_CRDR_SDCTRL_RSP_NONE;
break;
case MMC_RSP_R1:
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1;
break;
case MMC_RSP_R1B:
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1B;
break;
case MMC_RSP_R2:
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R2;
break;
case MMC_RSP_R3:
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R3;
break;
default:
pr_err("%s: cmd->flag is not valid\n", mmc_hostname(host->mmc));
break;
}
if (!(cmd->data))
goto nodata;
via_sdc_preparedata(host, data);
/*Command control*/
if (data->blocks > 1) {
if (data->flags & MMC_DATA_WRITE) {
cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
cmdctrl |= VIA_CRDR_SDCTRL_MULTI_WR;
} else {
cmdctrl |= VIA_CRDR_SDCTRL_MULTI_RD;
}
} else {
if (data->flags & MMC_DATA_WRITE) {
cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_WR;
} else {
cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_RD;
}
}
nodata:
if (cmd == host->mrq->stop)
cmdctrl |= VIA_CRDR_SDCTRL_STOP;
cmdctrl |= VIA_CRDR_SDCTRL_START;
addrbase = host->sdhc_mmiobase;
writel(cmd->arg, addrbase + VIA_CRDR_SDCARG);
writel(cmdctrl, addrbase + VIA_CRDR_SDCTRL);
}
static void via_sdc_finish_data(struct via_crdr_mmc_host *host)
{
struct mmc_data *data;
BUG_ON(!host->data);
data = host->data;
host->data = NULL;
if (data->error)
data->bytes_xfered = 0;
else
data->bytes_xfered = data->blocks * data->blksz;
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
((data->flags & MMC_DATA_READ) ?
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
if (data->stop)
via_sdc_send_command(host, data->stop);
else
tasklet_schedule(&host->finish_tasklet);
}
static void via_sdc_finish_command(struct via_crdr_mmc_host *host)
{
via_sdc_get_response(host, host->cmd);
host->cmd->error = 0;
if (!host->cmd->data)
tasklet_schedule(&host->finish_tasklet);
host->cmd = NULL;
}
static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
void __iomem *addrbase;
struct via_crdr_mmc_host *host;
unsigned long flags;
u16 status;
host = mmc_priv(mmc);
spin_lock_irqsave(&host->lock, flags);
addrbase = host->pcictrl_mmiobase;
writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
status &= VIA_CRDR_SDSTS_W1C_MASK;
writew(status, host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
WARN_ON(host->mrq != NULL);
host->mrq = mrq;
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) {
host->mrq->cmd->error = -ENOMEDIUM;
tasklet_schedule(&host->finish_tasklet);
} else {
via_sdc_send_command(host, mrq->cmd);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
static void via_sdc_set_power(struct via_crdr_mmc_host *host,
unsigned short power, unsigned int on)
{
unsigned long flags;
u8 gatt;
spin_lock_irqsave(&host->lock, flags);
host->power = (1 << power);
gatt = readb(host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
if (host->power == MMC_VDD_165_195)
gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
else
gatt |= VIA_CRDR_PCICLKGATT_3V3;
if (on)
gatt |= VIA_CRDR_PCICLKGATT_PAD_PWRON;
else
gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_pwron_sleep(host);
}
static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct via_crdr_mmc_host *host;
unsigned long flags;
void __iomem *addrbase;
u32 org_data, sdextctrl;
u8 clock;
host = mmc_priv(mmc);
spin_lock_irqsave(&host->lock, flags);
addrbase = host->sdhc_mmiobase;
org_data = readl(addrbase + VIA_CRDR_SDBUSMODE);
sdextctrl = readl(addrbase + VIA_CRDR_SDEXTCTRL);
if (ios->bus_width == MMC_BUS_WIDTH_1)
org_data &= ~VIA_CRDR_SDMODE_4BIT;
else
org_data |= VIA_CRDR_SDMODE_4BIT;
if (ios->power_mode == MMC_POWER_OFF)
org_data &= ~VIA_CRDR_SDMODE_CLK_ON;
else
org_data |= VIA_CRDR_SDMODE_CLK_ON;
if (ios->timing == MMC_TIMING_SD_HS)
sdextctrl |= VIA_CRDR_SDEXTCTRL_HISPD;
else
sdextctrl &= ~VIA_CRDR_SDEXTCTRL_HISPD;
writel(org_data, addrbase + VIA_CRDR_SDBUSMODE);
writel(sdextctrl, addrbase + VIA_CRDR_SDEXTCTRL);
if (ios->clock >= 48000000)
clock = PCI_CLK_48M;
else if (ios->clock >= 33000000)
clock = PCI_CLK_33M;
else if (ios->clock >= 24000000)
clock = PCI_CLK_24M;
else if (ios->clock >= 16000000)
clock = PCI_CLK_16M;
else if (ios->clock >= 12000000)
clock = PCI_CLK_12M;
else if (ios->clock >= 8000000)
clock = PCI_CLK_8M;
else
clock = PCI_CLK_375K;
addrbase = host->pcictrl_mmiobase;
if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock)
writeb(clock, addrbase + VIA_CRDR_PCISDCCLK);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
if (ios->power_mode != MMC_POWER_OFF)
via_sdc_set_power(host, ios->vdd, 1);
else
via_sdc_set_power(host, ios->vdd, 0);
}
static int via_sdc_get_ro(struct mmc_host *mmc)
{
struct via_crdr_mmc_host *host;
unsigned long flags;
u16 status;
host = mmc_priv(mmc);
spin_lock_irqsave(&host->lock, flags);
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
spin_unlock_irqrestore(&host->lock, flags);
return !(status & VIA_CRDR_SDSTS_WP);
}
static const struct mmc_host_ops via_sdc_ops = {
.request = via_sdc_request,
.set_ios = via_sdc_set_ios,
.get_ro = via_sdc_get_ro,
};
static void via_reset_pcictrl(struct via_crdr_mmc_host *host)
{
void __iomem *addrbase;
unsigned long flags;
u8 gatt;
addrbase = host->pcictrl_mmiobase;
spin_lock_irqsave(&host->lock, flags);
via_save_pcictrlreg(host);
via_save_sdcreg(host);
spin_unlock_irqrestore(&host->lock, flags);
gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
if (host->power == MMC_VDD_165_195)
gatt &= VIA_CRDR_PCICLKGATT_3V3;
else
gatt |= VIA_CRDR_PCICLKGATT_3V3;
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
via_pwron_sleep(host);
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
msleep(3);
spin_lock_irqsave(&host->lock, flags);
via_restore_pcictrlreg(host);
via_restore_sdcreg(host);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask)
{
BUG_ON(intmask == 0);
if (!host->cmd) {
pr_err("%s: Got command interrupt 0x%x even "
"though no command operation was in progress.\n",
mmc_hostname(host->mmc), intmask);
return;
}
if (intmask & VIA_CRDR_SDSTS_CRTO)
host->cmd->error = -ETIMEDOUT;
else if (intmask & VIA_CRDR_SDSTS_SC)
host->cmd->error = -EILSEQ;
if (host->cmd->error)
tasklet_schedule(&host->finish_tasklet);
else if (intmask & VIA_CRDR_SDSTS_CRD)
via_sdc_finish_command(host);
}
static void via_sdc_data_isr(struct via_crdr_mmc_host *host, u16 intmask)
{
BUG_ON(intmask == 0);
if (intmask & VIA_CRDR_SDSTS_DT)
host->data->error = -ETIMEDOUT;
else if (intmask & (VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC))
host->data->error = -EILSEQ;
via_sdc_finish_data(host);
}
static irqreturn_t via_sdc_isr(int irq, void *dev_id)
{
struct via_crdr_mmc_host *sdhost = dev_id;
void __iomem *addrbase;
u8 pci_status;
u16 sd_status;
irqreturn_t result;
if (!sdhost)
return IRQ_NONE;
spin_lock(&sdhost->lock);
addrbase = sdhost->pcictrl_mmiobase;
pci_status = readb(addrbase + VIA_CRDR_PCIINTSTATUS);
if (!(pci_status & VIA_CRDR_PCIINTSTATUS_SDC)) {
result = IRQ_NONE;
goto out;
}
addrbase = sdhost->sdhc_mmiobase;
sd_status = readw(addrbase + VIA_CRDR_SDSTATUS);
sd_status &= VIA_CRDR_SDSTS_INT_MASK;
sd_status &= ~VIA_CRDR_SDSTS_IGN_MASK;
if (!sd_status) {
result = IRQ_NONE;
goto out;
}
if (sd_status & VIA_CRDR_SDSTS_CIR) {
writew(sd_status & VIA_CRDR_SDSTS_CIR,
addrbase + VIA_CRDR_SDSTATUS);
schedule_work(&sdhost->carddet_work);
}
sd_status &= ~VIA_CRDR_SDSTS_CIR;
if (sd_status & VIA_CRDR_SDSTS_CMD_MASK) {
writew(sd_status & VIA_CRDR_SDSTS_CMD_MASK,
addrbase + VIA_CRDR_SDSTATUS);
via_sdc_cmd_isr(sdhost, sd_status & VIA_CRDR_SDSTS_CMD_MASK);
}
if (sd_status & VIA_CRDR_SDSTS_DATA_MASK) {
writew(sd_status & VIA_CRDR_SDSTS_DATA_MASK,
addrbase + VIA_CRDR_SDSTATUS);
via_sdc_data_isr(sdhost, sd_status & VIA_CRDR_SDSTS_DATA_MASK);
}
sd_status &= ~(VIA_CRDR_SDSTS_CMD_MASK | VIA_CRDR_SDSTS_DATA_MASK);
if (sd_status) {
pr_err("%s: Unexpected interrupt 0x%x\n",
mmc_hostname(sdhost->mmc), sd_status);
writew(sd_status, addrbase + VIA_CRDR_SDSTATUS);
}
result = IRQ_HANDLED;
mmiowb();
out:
spin_unlock(&sdhost->lock);
return result;
}
static void via_sdc_timeout(unsigned long ulongdata)
{
struct via_crdr_mmc_host *sdhost;
unsigned long flags;
sdhost = (struct via_crdr_mmc_host *)ulongdata;
spin_lock_irqsave(&sdhost->lock, flags);
if (sdhost->mrq) {
pr_err("%s: Timeout waiting for hardware interrupt."
"cmd:0x%x\n", mmc_hostname(sdhost->mmc),
sdhost->mrq->cmd->opcode);
if (sdhost->data) {
writel(VIA_CRDR_DMACTRL_SFTRST,
sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
sdhost->data->error = -ETIMEDOUT;
via_sdc_finish_data(sdhost);
} else {
if (sdhost->cmd)
sdhost->cmd->error = -ETIMEDOUT;
else
sdhost->mrq->cmd->error = -ETIMEDOUT;
tasklet_schedule(&sdhost->finish_tasklet);
}
}
mmiowb();
spin_unlock_irqrestore(&sdhost->lock, flags);
}
static void via_sdc_tasklet_finish(unsigned long param)
{
struct via_crdr_mmc_host *host;
unsigned long flags;
struct mmc_request *mrq;
host = (struct via_crdr_mmc_host *)param;
spin_lock_irqsave(&host->lock, flags);
del_timer(&host->timer);
mrq = host->mrq;
host->mrq = NULL;
host->cmd = NULL;
host->data = NULL;
spin_unlock_irqrestore(&host->lock, flags);
mmc_request_done(host->mmc, mrq);
}
static void via_sdc_card_detect(struct work_struct *work)
{
struct via_crdr_mmc_host *host;
void __iomem *addrbase;
unsigned long flags;
u16 status;
host = container_of(work, struct via_crdr_mmc_host, carddet_work);
addrbase = host->ddma_mmiobase;
writel(VIA_CRDR_DMACTRL_SFTRST, addrbase + VIA_CRDR_DMACTRL);
spin_lock_irqsave(&host->lock, flags);
addrbase = host->pcictrl_mmiobase;
writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
addrbase = host->sdhc_mmiobase;
status = readw(addrbase + VIA_CRDR_SDSTATUS);
if (!(status & VIA_CRDR_SDSTS_SLOTG)) {
if (host->mrq) {
pr_err("%s: Card removed during transfer!\n",
mmc_hostname(host->mmc));
host->mrq->cmd->error = -ENOMEDIUM;
tasklet_schedule(&host->finish_tasklet);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_reset_pcictrl(host);
spin_lock_irqsave(&host->lock, flags);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_print_pcictrl(host);
via_print_sdchc(host);
mmc_detect_change(host->mmc, msecs_to_jiffies(500));
}
static void via_init_mmc_host(struct via_crdr_mmc_host *host)
{
struct mmc_host *mmc = host->mmc;
void __iomem *addrbase;
u32 lenreg;
u32 status;
init_timer(&host->timer);
host->timer.data = (unsigned long)host;
host->timer.function = via_sdc_timeout;
spin_lock_init(&host->lock);
mmc->f_min = VIA_CRDR_MIN_CLOCK;
mmc->f_max = VIA_CRDR_MAX_CLOCK;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED;
mmc->ops = &via_sdc_ops;
/*Hardware cannot do scatter lists*/
mmc->max_hw_segs = 1;
mmc->max_phys_segs = 1;
mmc->max_blk_size = VIA_CRDR_MAX_BLOCK_LENGTH;
mmc->max_blk_count = VIA_CRDR_MAX_BLOCK_COUNT;
mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_req_size = mmc->max_seg_size;
INIT_WORK(&host->carddet_work, via_sdc_card_detect);
tasklet_init(&host->finish_tasklet, via_sdc_tasklet_finish,
(unsigned long)host);
addrbase = host->sdhc_mmiobase;
writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
msleep(1);
lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
status = readw(addrbase + VIA_CRDR_SDSTATUS);
status &= VIA_CRDR_SDSTS_W1C_MASK;
writew(status, addrbase + VIA_CRDR_SDSTATUS);
status = readw(addrbase + VIA_CRDR_SDSTATUS2);
status |= VIA_CRDR_SDSTS_CFE;
writew(status, addrbase + VIA_CRDR_SDSTATUS2);
writeb(0x0, addrbase + VIA_CRDR_SDEXTCTRL);
writel(VIA_CRDR_SDACTIVE_INTMASK, addrbase + VIA_CRDR_SDINTMASK);
msleep(1);
}
static int __devinit via_sd_probe(struct pci_dev *pcidev,
const struct pci_device_id *id)
{
struct mmc_host *mmc;
struct via_crdr_mmc_host *sdhost;
u32 base, len;
u8 rev, gatt;
int ret;
pci_read_config_byte(pcidev, PCI_CLASS_REVISION, &rev);
pr_info(DRV_NAME
": VIA SDMMC controller found at %s [%04x:%04x] (rev %x)\n",
pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
(int)rev);
ret = pci_enable_device(pcidev);
if (ret)
return ret;
ret = pci_request_regions(pcidev, DRV_NAME);
if (ret)
goto disable;
pci_write_config_byte(pcidev, VIA_CRDR_PCI_WORK_MODE, 0);
pci_write_config_byte(pcidev, VIA_CRDR_PCI_DBG_MODE, 0);
mmc = mmc_alloc_host(sizeof(struct via_crdr_mmc_host), &pcidev->dev);
if (!mmc) {
ret = -ENOMEM;
goto release;
}
sdhost = mmc_priv(mmc);
sdhost->mmc = mmc;
dev_set_drvdata(&pcidev->dev, sdhost);
len = pci_resource_len(pcidev, 0);
base = pci_resource_start(pcidev, 0);
sdhost->mmiobase = ioremap_nocache(base, len);
if (!sdhost->mmiobase) {
ret = -ENOMEM;
goto free_mmc_host;
}
sdhost->sdhc_mmiobase =
sdhost->mmiobase + VIA_CRDR_SDC_OFF;
sdhost->ddma_mmiobase =
sdhost->mmiobase + VIA_CRDR_DDMA_OFF;
sdhost->pcictrl_mmiobase =
sdhost->mmiobase + VIA_CRDR_PCICTRL_OFF;
sdhost->power = MMC_VDD_165_195;
gatt = VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
via_pwron_sleep(sdhost);
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
msleep(3);
via_init_mmc_host(sdhost);
ret =
request_irq(pcidev->irq, via_sdc_isr, IRQF_SHARED, DRV_NAME,
sdhost);
if (ret)
goto unmap;
writeb(VIA_CRDR_PCIINTCTRL_SDCIRQEN,
sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
writeb(VIA_CRDR_PCITMOCTRL_1024MS,
sdhost->pcictrl_mmiobase + VIA_CRDR_PCITMOCTRL);
/* device-specific quirks */
if (pcidev->subsystem_vendor == PCI_VENDOR_ID_LENOVO &&
pcidev->subsystem_device == 0x3891)
sdhost->quirks = VIA_CRDR_QUIRK_300MS_PWRDELAY;
mmc_add_host(mmc);
return 0;
unmap:
iounmap(sdhost->mmiobase);
free_mmc_host:
dev_set_drvdata(&pcidev->dev, NULL);
mmc_free_host(mmc);
release:
pci_release_regions(pcidev);
disable:
pci_disable_device(pcidev);
return ret;
}
static void __devexit via_sd_remove(struct pci_dev *pcidev)
{
struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev);
unsigned long flags;
u8 gatt;
spin_lock_irqsave(&sdhost->lock, flags);
/* Ensure we don't accept more commands from mmc layer */
sdhost->reject = 1;
/* Disable generating further interrupts */
writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
mmiowb();
if (sdhost->mrq) {
printk(KERN_ERR "%s: Controller removed during "
"transfer\n", mmc_hostname(sdhost->mmc));
/* make sure all DMA is stopped */
writel(VIA_CRDR_DMACTRL_SFTRST,
sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
mmiowb();
sdhost->mrq->cmd->error = -ENOMEDIUM;
if (sdhost->mrq->stop)
sdhost->mrq->stop->error = -ENOMEDIUM;
tasklet_schedule(&sdhost->finish_tasklet);
}
spin_unlock_irqrestore(&sdhost->lock, flags);
mmc_remove_host(sdhost->mmc);
free_irq(pcidev->irq, sdhost);
del_timer_sync(&sdhost->timer);
tasklet_kill(&sdhost->finish_tasklet);
/* switch off power */
gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
iounmap(sdhost->mmiobase);
dev_set_drvdata(&pcidev->dev, NULL);
mmc_free_host(sdhost->mmc);
pci_release_regions(pcidev);
pci_disable_device(pcidev);
pr_info(DRV_NAME
": VIA SDMMC controller at %s [%04x:%04x] has been removed\n",
pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
}
#ifdef CONFIG_PM
static void via_init_sdc_pm(struct via_crdr_mmc_host *host)
{
struct sdhcreg *pm_sdhcreg;
void __iomem *addrbase;
u32 lenreg;
u16 status;
pm_sdhcreg = &(host->pm_sdhc_reg);
addrbase = host->sdhc_mmiobase;
writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
status = readw(addrbase + VIA_CRDR_SDSTATUS);
status &= VIA_CRDR_SDSTS_W1C_MASK;
writew(status, addrbase + VIA_CRDR_SDSTATUS);
status = readw(addrbase + VIA_CRDR_SDSTATUS2);
status |= VIA_CRDR_SDSTS_CFE;
writew(status, addrbase + VIA_CRDR_SDSTATUS2);
writel(pm_sdhcreg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
writel(pm_sdhcreg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
writel(pm_sdhcreg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
writel(pm_sdhcreg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
writel(pm_sdhcreg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
writel(pm_sdhcreg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
via_print_pcictrl(host);
via_print_sdchc(host);
}
static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state)
{
struct via_crdr_mmc_host *host;
int ret = 0;
host = pci_get_drvdata(pcidev);
via_save_pcictrlreg(host);
via_save_sdcreg(host);
ret = mmc_suspend_host(host->mmc, state);
pci_save_state(pcidev);
pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
pci_disable_device(pcidev);
pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
return ret;
}
static int via_sd_resume(struct pci_dev *pcidev)
{
struct via_crdr_mmc_host *sdhost;
int ret = 0;
u8 gatt;
sdhost = pci_get_drvdata(pcidev);
gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
if (sdhost->power == MMC_VDD_165_195)
gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
else
gatt |= VIA_CRDR_PCICLKGATT_3V3;
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
via_pwron_sleep(sdhost);
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
msleep(3);
msleep(100);
pci_set_power_state(pcidev, PCI_D0);
pci_restore_state(pcidev);
ret = pci_enable_device(pcidev);
if (ret)
return ret;
via_restore_pcictrlreg(sdhost);
via_init_sdc_pm(sdhost);
ret = mmc_resume_host(sdhost->mmc);
return ret;
}
#else /* CONFIG_PM */
#define via_sd_suspend NULL
#define via_sd_resume NULL
#endif /* CONFIG_PM */
static struct pci_driver via_sd_driver = {
.name = DRV_NAME,
.id_table = via_ids,
.probe = via_sd_probe,
.remove = __devexit_p(via_sd_remove),
.suspend = via_sd_suspend,
.resume = via_sd_resume,
};
static int __init via_sd_drv_init(void)
{
pr_info(DRV_NAME ": VIA SD/MMC Card Reader driver "
"(C) 2008 VIA Technologies, Inc.\n");
return pci_register_driver(&via_sd_driver);
}
static void __exit via_sd_drv_exit(void)
{
pci_unregister_driver(&via_sd_driver);
}
module_init(via_sd_drv_init);
module_exit(via_sd_drv_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("VIA Technologies Inc.");
MODULE_DESCRIPTION("VIA SD/MMC Card Interface driver");
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