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Commit 8211e6b8 authored by Mark Brown's avatar Mark Brown
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Merge remote-tracking branch 'spi/topic/loop' into spi-next

parents c25b2c9e 0732a9d2
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Showing with 428 additions and 128 deletions
drivers/spi/Kconfig
View file @ 8211e6b8
......@@ -394,7 +394,7 @@ config SPI_S3C24XX_FIQ
config SPI_S3C64XX
tristate "Samsung S3C64XX series type SPI"
depends on (ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5P64X0 || ARCH_EXYNOS)
depends on PLAT_SAMSUNG
select S3C64XX_DMA if ARCH_S3C64XX
help
SPI driver for Samsung S3C64XX and newer SoCs.
......
drivers/spi/spi-s3c64xx.c
View file @ 8211e6b8
......@@ -205,7 +205,6 @@ struct s3c64xx_spi_driver_data {
#endif
struct s3c64xx_spi_port_config *port_conf;
unsigned int port_id;
unsigned long gpios[4];
bool cs_gpio;
};
......@@ -559,25 +558,18 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd,
static inline void enable_cs(struct s3c64xx_spi_driver_data *sdd,
struct spi_device *spi)
{
struct s3c64xx_spi_csinfo *cs;
if (sdd->tgl_spi != NULL) { /* If last device toggled after mssg */
if (sdd->tgl_spi != spi) { /* if last mssg on diff device */
/* Deselect the last toggled device */
cs = sdd->tgl_spi->controller_data;
if (sdd->cs_gpio)
gpio_set_value(cs->line,
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio,
spi->mode & SPI_CS_HIGH ? 0 : 1);
}
sdd->tgl_spi = NULL;
}
cs = spi->controller_data;
if (sdd->cs_gpio)
gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
/* Start the signals */
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 1 : 0);
}
static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd,
......@@ -702,16 +694,11 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd,
struct spi_device *spi)
{
struct s3c64xx_spi_csinfo *cs = spi->controller_data;
if (sdd->tgl_spi == spi)
sdd->tgl_spi = NULL;
if (sdd->cs_gpio)
gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
/* Quiese the signals */
writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 0 : 1);
}
static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
......@@ -862,16 +849,12 @@ static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd,
}
}
static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
struct spi_message *msg)
static int s3c64xx_spi_prepare_message(struct spi_master *master,
struct spi_message *msg)
{
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
struct spi_device *spi = msg->spi;
struct s3c64xx_spi_csinfo *cs = spi->controller_data;
struct spi_transfer *xfer;
int status = 0, cs_toggle = 0;
u32 speed;
u8 bpw;
/* If Master's(controller) state differs from that needed by Slave */
if (sdd->cur_speed != spi->max_speed_hz
......@@ -887,106 +870,98 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
if (s3c64xx_spi_map_mssg(sdd, msg)) {
dev_err(&spi->dev,
"Xfer: Unable to map message buffers!\n");
status = -ENOMEM;
goto out;
return -ENOMEM;
}
/* Configure feedback delay */
writel(cs->fb_delay & 0x3, sdd->regs + S3C64XX_SPI_FB_CLK);
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
unsigned long flags;
int use_dma;
INIT_COMPLETION(sdd->xfer_completion);
/* Only BPW and Speed may change across transfers */
bpw = xfer->bits_per_word;
speed = xfer->speed_hz ? : spi->max_speed_hz;
if (xfer->len % (bpw / 8)) {
dev_err(&spi->dev,
"Xfer length(%u) not a multiple of word size(%u)\n",
xfer->len, bpw / 8);
status = -EIO;
goto out;
}
return 0;
}
if (bpw != sdd->cur_bpw || speed != sdd->cur_speed) {
sdd->cur_bpw = bpw;
sdd->cur_speed = speed;
s3c64xx_spi_config(sdd);
}
static int s3c64xx_spi_transfer_one(struct spi_master *master,
struct spi_device *spi,
struct spi_transfer *xfer)
{
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
int status;
u32 speed;
u8 bpw;
unsigned long flags;
int use_dma;
/* Polling method for xfers not bigger than FIFO capacity */
use_dma = 0;
if (!is_polling(sdd) &&
(sdd->rx_dma.ch && sdd->tx_dma.ch &&
(xfer->len > ((FIFO_LVL_MASK(sdd) >> 1) + 1))))
use_dma = 1;
INIT_COMPLETION(sdd->xfer_completion);
spin_lock_irqsave(&sdd->lock, flags);
/* Only BPW and Speed may change across transfers */
bpw = xfer->bits_per_word;
speed = xfer->speed_hz ? : spi->max_speed_hz;
/* Pending only which is to be done */
sdd->state &= ~RXBUSY;
sdd->state &= ~TXBUSY;
if (xfer->len % (bpw / 8)) {
dev_err(&spi->dev,
"Xfer length(%u) not a multiple of word size(%u)\n",
xfer->len, bpw / 8);
return -EIO;
}
enable_datapath(sdd, spi, xfer, use_dma);
if (bpw != sdd->cur_bpw || speed != sdd->cur_speed) {
sdd->cur_bpw = bpw;
sdd->cur_speed = speed;
s3c64xx_spi_config(sdd);
}
/* Slave Select */
enable_cs(sdd, spi);
/* Polling method for xfers not bigger than FIFO capacity */
use_dma = 0;
if (!is_polling(sdd) &&
(sdd->rx_dma.ch && sdd->tx_dma.ch &&
(xfer->len > ((FIFO_LVL_MASK(sdd) >> 1) + 1))))
use_dma = 1;
spin_unlock_irqrestore(&sdd->lock, flags);
spin_lock_irqsave(&sdd->lock, flags);
status = wait_for_xfer(sdd, xfer, use_dma);
/* Pending only which is to be done */
sdd->state &= ~RXBUSY;
sdd->state &= ~TXBUSY;
if (status) {
dev_err(&spi->dev, "I/O Error: rx-%d tx-%d res:rx-%c tx-%c len-%d\n",
xfer->rx_buf ? 1 : 0, xfer->tx_buf ? 1 : 0,
(sdd->state & RXBUSY) ? 'f' : 'p',
(sdd->state & TXBUSY) ? 'f' : 'p',
xfer->len);
enable_datapath(sdd, spi, xfer, use_dma);
if (use_dma) {
if (xfer->tx_buf != NULL
&& (sdd->state & TXBUSY))
s3c64xx_spi_dma_stop(sdd, &sdd->tx_dma);
if (xfer->rx_buf != NULL
&& (sdd->state & RXBUSY))
s3c64xx_spi_dma_stop(sdd, &sdd->rx_dma);
}
/* Start the signals */
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
goto out;
}
/* Start the signals */
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
if (xfer->delay_usecs)
udelay(xfer->delay_usecs);
spin_unlock_irqrestore(&sdd->lock, flags);
if (xfer->cs_change) {
/* Hint that the next mssg is gonna be
for the same device */
if (list_is_last(&xfer->transfer_list,
&msg->transfers))
cs_toggle = 1;
status = wait_for_xfer(sdd, xfer, use_dma);
if (status) {
dev_err(&spi->dev, "I/O Error: rx-%d tx-%d res:rx-%c tx-%c len-%d\n",
xfer->rx_buf ? 1 : 0, xfer->tx_buf ? 1 : 0,
(sdd->state & RXBUSY) ? 'f' : 'p',
(sdd->state & TXBUSY) ? 'f' : 'p',
xfer->len);
if (use_dma) {
if (xfer->tx_buf != NULL
&& (sdd->state & TXBUSY))
s3c64xx_spi_dma_stop(sdd, &sdd->tx_dma);
if (xfer->rx_buf != NULL
&& (sdd->state & RXBUSY))
s3c64xx_spi_dma_stop(sdd, &sdd->rx_dma);
}
msg->actual_length += xfer->len;
} else {
flush_fifo(sdd);
}
out:
if (!cs_toggle || status)
disable_cs(sdd, spi);
else
sdd->tgl_spi = spi;
s3c64xx_spi_unmap_mssg(sdd, msg);
return status;
}
msg->status = status;
static int s3c64xx_spi_unprepare_message(struct spi_master *master,
struct spi_message *msg)
{
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
spi_finalize_current_message(master);
s3c64xx_spi_unmap_mssg(sdd, msg);
return 0;
}
......@@ -1071,6 +1046,8 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
cs->line, err);
goto err_gpio_req;
}
spi->cs_gpio = cs->line;
}
spi_set_ctldata(spi, cs);
......@@ -1117,12 +1094,14 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
}
pm_runtime_put(&sdd->pdev->dev);
writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
disable_cs(sdd, spi);
return 0;
setup_exit:
pm_runtime_put(&sdd->pdev->dev);
/* setup() returns with device de-selected */
writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
disable_cs(sdd, spi);
gpio_free(cs->line);
......@@ -1141,8 +1120,8 @@ static void s3c64xx_spi_cleanup(struct spi_device *spi)
struct s3c64xx_spi_driver_data *sdd;
sdd = spi_master_get_devdata(spi->master);
if (cs && sdd->cs_gpio) {
gpio_free(cs->line);
if (spi->cs_gpio) {
gpio_free(spi->cs_gpio);
if (spi->dev.of_node)
kfree(cs);
}
......@@ -1360,7 +1339,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
master->setup = s3c64xx_spi_setup;
master->cleanup = s3c64xx_spi_cleanup;
master->prepare_transfer_hardware = s3c64xx_spi_prepare_transfer;
master->transfer_one_message = s3c64xx_spi_transfer_one_message;
master->prepare_message = s3c64xx_spi_prepare_message;
master->transfer_one = s3c64xx_spi_transfer_one;
master->unprepare_message = s3c64xx_spi_unprepare_message;
master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer;
master->num_chipselect = sci->num_cs;
master->dma_alignment = 8;
......@@ -1432,9 +1413,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
if (spi_register_master(master)) {
dev_err(&pdev->dev, "cannot register SPI master\n");
ret = -EBUSY;
ret = devm_spi_register_master(&pdev->dev, master);
if (ret != 0) {
dev_err(&pdev->dev, "cannot register SPI master: %d\n", ret);
goto err3;
}
......@@ -1463,16 +1444,12 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
spi_unregister_master(master);
writel(0, sdd->regs + S3C64XX_SPI_INT_EN);
clk_disable_unprepare(sdd->src_clk);
clk_disable_unprepare(sdd->clk);
spi_master_put(master);
return 0;
}
......@@ -1530,9 +1507,17 @@ static int s3c64xx_spi_runtime_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
int ret;
clk_prepare_enable(sdd->src_clk);
clk_prepare_enable(sdd->clk);
ret = clk_prepare_enable(sdd->src_clk);
if (ret != 0)
return ret;
ret = clk_prepare_enable(sdd->clk);
if (ret != 0) {
clk_disable_unprepare(sdd->src_clk);
return ret;
}
return 0;
}
......@@ -1618,6 +1603,18 @@ static struct platform_device_id s3c64xx_spi_driver_ids[] = {
};
static const struct of_device_id s3c64xx_spi_dt_match[] = {
{ .compatible = "samsung,s3c2443-spi",
.data = (void *)&s3c2443_spi_port_config,
},
{ .compatible = "samsung,s3c6410-spi",
.data = (void *)&s3c6410_spi_port_config,
},
{ .compatible = "samsung,s5pc100-spi",
.data = (void *)&s5pc100_spi_port_config,
},
{ .compatible = "samsung,s5pv210-spi",
.data = (void *)&s5pv210_spi_port_config,
},
{ .compatible = "samsung,exynos4210-spi",
.data = (void *)&exynos4_spi_port_config,
},
......@@ -1635,22 +1632,13 @@ static struct platform_driver s3c64xx_spi_driver = {
.pm = &s3c64xx_spi_pm,
.of_match_table = of_match_ptr(s3c64xx_spi_dt_match),
},
.probe = s3c64xx_spi_probe,
.remove = s3c64xx_spi_remove,
.id_table = s3c64xx_spi_driver_ids,
};
MODULE_ALIAS("platform:s3c64xx-spi");
static int __init s3c64xx_spi_init(void)
{
return platform_driver_probe(&s3c64xx_spi_driver, s3c64xx_spi_probe);
}
subsys_initcall(s3c64xx_spi_init);
static void __exit s3c64xx_spi_exit(void)
{
platform_driver_unregister(&s3c64xx_spi_driver);
}
module_exit(s3c64xx_spi_exit);
module_platform_driver(s3c64xx_spi_driver);
MODULE_AUTHOR("Jaswinder Singh <jassi.brar@samsung.com>");
MODULE_DESCRIPTION("S3C64XX SPI Controller Driver");
......
drivers/spi/spi.c
View file @ 8211e6b8
......@@ -39,6 +39,9 @@
#include <linux/ioport.h>
#include <linux/acpi.h>
#define CREATE_TRACE_POINTS
#include <trace/events/spi.h>
static void spidev_release(struct device *dev)
{
struct spi_device *spi = to_spi_device(dev);
......@@ -525,6 +528,95 @@ int spi_register_board_info(struct spi_board_info const *info, unsigned n)
/*-------------------------------------------------------------------------*/
static void spi_set_cs(struct spi_device *spi, bool enable)
{
if (spi->mode & SPI_CS_HIGH)
enable = !enable;
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, !enable);
else if (spi->master->set_cs)
spi->master->set_cs(spi, !enable);
}
/*
* spi_transfer_one_message - Default implementation of transfer_one_message()
*
* This is a standard implementation of transfer_one_message() for
* drivers which impelment a transfer_one() operation. It provides
* standard handling of delays and chip select management.
*/
static int spi_transfer_one_message(struct spi_master *master,
struct spi_message *msg)
{
struct spi_transfer *xfer;
bool cur_cs = true;
bool keep_cs = false;
int ret = 0;
spi_set_cs(msg->spi, true);
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
trace_spi_transfer_start(msg, xfer);
INIT_COMPLETION(master->xfer_completion);
ret = master->transfer_one(master, msg->spi, xfer);
if (ret < 0) {
dev_err(&msg->spi->dev,
"SPI transfer failed: %d\n", ret);
goto out;
}
if (ret > 0)
wait_for_completion(&master->xfer_completion);
trace_spi_transfer_stop(msg, xfer);
if (msg->status != -EINPROGRESS)
goto out;
if (xfer->delay_usecs)
udelay(xfer->delay_usecs);
if (xfer->cs_change) {
if (list_is_last(&xfer->transfer_list,
&msg->transfers)) {
keep_cs = true;
} else {
cur_cs = !cur_cs;
spi_set_cs(msg->spi, cur_cs);
}
}
msg->actual_length += xfer->len;
}
out:
if (ret != 0 || !keep_cs)
spi_set_cs(msg->spi, false);
if (msg->status == -EINPROGRESS)
msg->status = ret;
spi_finalize_current_message(master);
return ret;
}
/**
* spi_finalize_current_transfer - report completion of a transfer
*
* Called by SPI drivers using the core transfer_one_message()
* implementation to notify it that the current interrupt driven
* transfer has finised and the next one may be scheduled.
*/
void spi_finalize_current_transfer(struct spi_master *master)
{
complete(&master->xfer_completion);
}
EXPORT_SYMBOL_GPL(spi_finalize_current_transfer);
/**
* spi_pump_messages - kthread work function which processes spi message queue
* @work: pointer to kthread work struct contained in the master struct
......@@ -559,6 +651,7 @@ static void spi_pump_messages(struct kthread_work *work)
pm_runtime_mark_last_busy(master->dev.parent);
pm_runtime_put_autosuspend(master->dev.parent);
}
trace_spi_master_idle(master);
return;
}
......@@ -587,6 +680,9 @@ static void spi_pump_messages(struct kthread_work *work)
}
}
if (!was_busy)
trace_spi_master_busy(master);
if (!was_busy && master->prepare_transfer_hardware) {
ret = master->prepare_transfer_hardware(master);
if (ret) {
......@@ -599,6 +695,20 @@ static void spi_pump_messages(struct kthread_work *work)
}
}
trace_spi_message_start(master->cur_msg);
if (master->prepare_message) {
ret = master->prepare_message(master, master->cur_msg);
if (ret) {
dev_err(&master->dev,
"failed to prepare message: %d\n", ret);
master->cur_msg->status = ret;
spi_finalize_current_message(master);
return;
}
master->cur_msg_prepared = true;
}
ret = master->transfer_one_message(master, master->cur_msg);
if (ret) {
dev_err(&master->dev,
......@@ -680,6 +790,7 @@ void spi_finalize_current_message(struct spi_master *master)
{
struct spi_message *mesg;
unsigned long flags;
int ret;
spin_lock_irqsave(&master->queue_lock, flags);
mesg = master->cur_msg;
......@@ -688,9 +799,20 @@ void spi_finalize_current_message(struct spi_master *master)
queue_kthread_work(&master->kworker, &master->pump_messages);
spin_unlock_irqrestore(&master->queue_lock, flags);
if (master->cur_msg_prepared && master->unprepare_message) {
ret = master->unprepare_message(master, mesg);
if (ret) {
dev_err(&master->dev,
"failed to unprepare message: %d\n", ret);
}
}
master->cur_msg_prepared = false;
mesg->state = NULL;
if (mesg->complete)
mesg->complete(mesg->context);
trace_spi_message_done(mesg);
}
EXPORT_SYMBOL_GPL(spi_finalize_current_message);
......@@ -805,6 +927,8 @@ static int spi_master_initialize_queue(struct spi_master *master)
master->queued = true;
master->transfer = spi_queued_transfer;
if (!master->transfer_one_message)
master->transfer_one_message = spi_transfer_one_message;
/* Initialize and start queue */
ret = spi_init_queue(master);
......@@ -1205,6 +1329,7 @@ int spi_register_master(struct spi_master *master)
spin_lock_init(&master->bus_lock_spinlock);
mutex_init(&master->bus_lock_mutex);
master->bus_lock_flag = 0;
init_completion(&master->xfer_completion);
/* register the device, then userspace will see it.
* registration fails if the bus ID is in use.
......@@ -1451,6 +1576,10 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
struct spi_master *master = spi->master;
struct spi_transfer *xfer;
message->spi = spi;
trace_spi_message_submit(message);
if (list_empty(&message->transfers))
return -EINVAL;
if (!message->complete)
......@@ -1550,7 +1679,6 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
}
}
message->spi = spi;
message->status = -EINPROGRESS;
return master->transfer(spi, message);
}
......
include/linux/spi/spi.h
View file @ 8211e6b8
......@@ -23,6 +23,7 @@
#include <linux/mod_devicetable.h>
#include <linux/slab.h>
#include <linux/kthread.h>
#include <linux/completion.h>
/*
* INTERFACES between SPI master-side drivers and SPI infrastructure.
......@@ -150,8 +151,7 @@ static inline void *spi_get_drvdata(struct spi_device *spi)
}
struct spi_message;
struct spi_transfer;
/**
* struct spi_driver - Host side "protocol" driver
......@@ -257,6 +257,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @queue_lock: spinlock to syncronise access to message queue
* @queue: message queue
* @cur_msg: the currently in-flight message
* @cur_msg_prepared: spi_prepare_message was called for the currently
* in-flight message
* @xfer_completion: used by core tranfer_one_message()
* @busy: message pump is busy
* @running: message pump is running
* @rt: whether this queue is set to run as a realtime task
......@@ -274,6 +277,16 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @unprepare_transfer_hardware: there are currently no more messages on the
* queue so the subsystem notifies the driver that it may relax the
* hardware by issuing this call
* @set_cs: assert or deassert chip select, true to assert. May be called
* from interrupt context.
* @prepare_message: set up the controller to transfer a single message,
* for example doing DMA mapping. Called from threaded
* context.
* @transfer_one: transfer a single spi_transfer. When the
* driver is finished with this transfer it must call
* spi_finalize_current_transfer() so the subsystem can issue
* the next transfer
* @unprepare_message: undo any work done by prepare_message().
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
* number. Any individual value may be -ENOENT for CS lines that
* are not GPIOs (driven by the SPI controller itself).
......@@ -388,11 +401,25 @@ struct spi_master {
bool running;
bool rt;
bool auto_runtime_pm;
bool cur_msg_prepared;
struct completion xfer_completion;
int (*prepare_transfer_hardware)(struct spi_master *master);
int (*transfer_one_message)(struct spi_master *master,
struct spi_message *mesg);
int (*unprepare_transfer_hardware)(struct spi_master *master);
int (*prepare_message)(struct spi_master *master,
struct spi_message *message);
int (*unprepare_message)(struct spi_master *master,
struct spi_message *message);
/*
* These hooks are for drivers that use a generic implementation
* of transfer_one_message() provied by the core.
*/
void (*set_cs)(struct spi_device *spi, bool enable);
int (*transfer_one)(struct spi_master *master, struct spi_device *spi,
struct spi_transfer *transfer);
/* gpio chip select */
int *cs_gpios;
......@@ -428,6 +455,7 @@ extern int spi_master_resume(struct spi_master *master);
/* Calls the driver make to interact with the message queue */
extern struct spi_message *spi_get_next_queued_message(struct spi_master *master);
extern void spi_finalize_current_message(struct spi_master *master);
extern void spi_finalize_current_transfer(struct spi_master *master);
/* the spi driver core manages memory for the spi_master classdev */
extern struct spi_master *
......
include/trace/events/spi.h 0 → 100644
View file @ 8211e6b8
#undef TRACE_SYSTEM
#define TRACE_SYSTEM spi
#if !defined(_TRACE_SPI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SPI_H
#include <linux/ktime.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(spi_master,
TP_PROTO(struct spi_master *master),
TP_ARGS(master),
TP_STRUCT__entry(
__field( int, bus_num )
),
TP_fast_assign(
__entry->bus_num = master->bus_num;
),
TP_printk("spi%d", (int)__entry->bus_num)
);
DEFINE_EVENT(spi_master, spi_master_idle,
TP_PROTO(struct spi_master *master),
TP_ARGS(master)
);
DEFINE_EVENT(spi_master, spi_master_busy,
TP_PROTO(struct spi_master *master),
TP_ARGS(master)
);
DECLARE_EVENT_CLASS(spi_message,
TP_PROTO(struct spi_message *msg),
TP_ARGS(msg),
TP_STRUCT__entry(
__field( int, bus_num )
__field( int, chip_select )
__field( struct spi_message *, msg )
),
TP_fast_assign(
__entry->bus_num = msg->spi->master->bus_num;
__entry->chip_select = msg->spi->chip_select;
__entry->msg = msg;
),
TP_printk("spi%d.%d %p", (int)__entry->bus_num,
(int)__entry->chip_select,
(struct spi_message *)__entry->msg)
);
DEFINE_EVENT(spi_message, spi_message_submit,
TP_PROTO(struct spi_message *msg),
TP_ARGS(msg)
);
DEFINE_EVENT(spi_message, spi_message_start,
TP_PROTO(struct spi_message *msg),
TP_ARGS(msg)
);
TRACE_EVENT(spi_message_done,
TP_PROTO(struct spi_message *msg),
TP_ARGS(msg),
TP_STRUCT__entry(
__field( int, bus_num )
__field( int, chip_select )
__field( struct spi_message *, msg )
__field( unsigned, frame )
__field( unsigned, actual )
),
TP_fast_assign(
__entry->bus_num = msg->spi->master->bus_num;
__entry->chip_select = msg->spi->chip_select;
__entry->msg = msg;
__entry->frame = msg->frame_length;
__entry->actual = msg->actual_length;
),
TP_printk("spi%d.%d %p len=%u/%u", (int)__entry->bus_num,
(int)__entry->chip_select,
(struct spi_message *)__entry->msg,
(unsigned)__entry->actual, (unsigned)__entry->frame)
);
DECLARE_EVENT_CLASS(spi_transfer,
TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
TP_ARGS(msg, xfer),
TP_STRUCT__entry(
__field( int, bus_num )
__field( int, chip_select )
__field( struct spi_transfer *, xfer )
__field( int, len )
),
TP_fast_assign(
__entry->bus_num = msg->spi->master->bus_num;
__entry->chip_select = msg->spi->chip_select;
__entry->xfer = xfer;
__entry->len = xfer->len;
),
TP_printk("spi%d.%d %p len=%d", (int)__entry->bus_num,
(int)__entry->chip_select,
(struct spi_message *)__entry->xfer,
(int)__entry->len)
);
DEFINE_EVENT(spi_transfer, spi_transfer_start,
TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
TP_ARGS(msg, xfer)
);
DEFINE_EVENT(spi_transfer, spi_transfer_stop,
TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
TP_ARGS(msg, xfer)
);
#endif /* _TRACE_POWER_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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