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Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/sunxi', 'spi/topic/ti-qspi', 'spi/topic/topcliff-pch' and 'spi/topic/txx9' into spi-next

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This commit is contained in:
Mark Brown 2016-07-24 22:08:27 +01:00
commit 1cb2e84873
6 changed files with 62 additions and 33 deletions
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8
drivers/spi/spi-sun4i.c
View File

@ -167,6 +167,11 @@ static void sun4i_spi_set_cs(struct spi_device *spi, bool enable)
sun4i_spi_write(sspi, SUN4I_CTL_REG, reg);
}
static size_t sun4i_spi_max_transfer_size(struct spi_device *spi)
{
return SUN4I_FIFO_DEPTH - 1;
}
static int sun4i_spi_transfer_one(struct spi_master *master,
struct spi_device *spi,
struct spi_transfer *tfr)
@ -402,6 +407,8 @@ static int sun4i_spi_probe(struct platform_device *pdev)
}
sspi->master = master;
master->max_speed_hz = 100 * 1000 * 1000;
master->min_speed_hz = 3 * 1000;
master->set_cs = sun4i_spi_set_cs;
master->transfer_one = sun4i_spi_transfer_one;
master->num_chipselect = 4;
@ -409,6 +416,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
master->bits_per_word_mask = SPI_BPW_MASK(8);
master->dev.of_node = pdev->dev.of_node;
master->auto_runtime_pm = true;
master->max_transfer_size = sun4i_spi_max_transfer_size;
sspi->hclk = devm_clk_get(&pdev->dev, "ahb");
if (IS_ERR(sspi->hclk)) {

7
drivers/spi/spi-sun6i.c
View File

@ -153,6 +153,10 @@ static void sun6i_spi_set_cs(struct spi_device *spi, bool enable)
sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg);
}
static size_t sun6i_spi_max_transfer_size(struct spi_device *spi)
{
return SUN6I_FIFO_DEPTH - 1;
}
static int sun6i_spi_transfer_one(struct spi_master *master,
struct spi_device *spi,
@ -394,6 +398,8 @@ static int sun6i_spi_probe(struct platform_device *pdev)
}
sspi->master = master;
master->max_speed_hz = 100 * 1000 * 1000;
master->min_speed_hz = 3 * 1000;
master->set_cs = sun6i_spi_set_cs;
master->transfer_one = sun6i_spi_transfer_one;
master->num_chipselect = 4;
@ -401,6 +407,7 @@ static int sun6i_spi_probe(struct platform_device *pdev)
master->bits_per_word_mask = SPI_BPW_MASK(8);
master->dev.of_node = pdev->dev.of_node;
master->auto_runtime_pm = true;
master->max_transfer_size = sun6i_spi_max_transfer_size;
sspi->hclk = devm_clk_get(&pdev->dev, "ahb");
if (IS_ERR(sspi->hclk)) {

2
drivers/spi/spi-ti-qspi.c
View File

@ -141,7 +141,7 @@ static int ti_qspi_setup(struct spi_device *spi)
u32 clk_ctrl_reg, clk_rate, clk_mask;
if (spi->master->busy) {
dev_dbg(qspi->dev, "master busy doing other trasnfers\n");
dev_dbg(qspi->dev, "master busy doing other transfers\n");
return -EBUSY;
}

26
drivers/spi/spi-topcliff-pch.c
View File

@ -133,8 +133,6 @@ struct pch_spi_dma_ctrl {
* @io_remap_addr: The remapped PCI base address
* @master: Pointer to the SPI master structure
* @work: Reference to work queue handler
* @wk: Workqueue for carrying out execution of the
* requests
* @wait: Wait queue for waking up upon receiving an
* interrupt.
* @transfer_complete: Status of SPI Transfer
@ -169,7 +167,6 @@ struct pch_spi_data {
unsigned long io_base_addr;
struct spi_master *master;
struct work_struct work;
struct workqueue_struct *wk;
wait_queue_head_t wait;
u8 transfer_complete;
u8 bcurrent_msg_processing;
@ -517,8 +514,7 @@ static int pch_spi_transfer(struct spi_device *pspi, struct spi_message *pmsg)
dev_dbg(&pspi->dev, "%s - Invoked list_add_tail\n", __func__);
/* schedule work queue to run */
queue_work(data->wk, &data->work);
schedule_work(&data->work);
dev_dbg(&pspi->dev, "%s - Invoked queue work\n", __func__);
retval = 0;
@ -674,7 +670,7 @@ static void pch_spi_nomore_transfer(struct pch_spi_data *data)
*more messages)
*/
dev_dbg(&data->master->dev, "%s:Invoke queue_work\n", __func__);
queue_work(data->wk, &data->work);
schedule_work(&data->work);
} else if (data->board_dat->suspend_sts ||
data->status == STATUS_EXITING) {
dev_dbg(&data->master->dev,
@ -1266,14 +1262,7 @@ static void pch_spi_free_resources(struct pch_spi_board_data *board_dat,
{
dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__);
/* free workqueue */
if (data->wk != NULL) {
destroy_workqueue(data->wk);
data->wk = NULL;
dev_dbg(&board_dat->pdev->dev,
"%s destroy_workqueue invoked successfully\n",
__func__);
}
flush_work(&data->work);
}
static int pch_spi_get_resources(struct pch_spi_board_data *board_dat,
@ -1283,14 +1272,6 @@ static int pch_spi_get_resources(struct pch_spi_board_data *board_dat,
dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__);
/* create workqueue */
data->wk = create_singlethread_workqueue(KBUILD_MODNAME);
if (!data->wk) {
dev_err(&board_dat->pdev->dev,
"%s create_singlet hread_workqueue failed\n", __func__);
retval = -EBUSY;
goto err_return;
}
/* reset PCH SPI h/w */
pch_spi_reset(data->master);
@ -1299,7 +1280,6 @@ static int pch_spi_get_resources(struct pch_spi_board_data *board_dat,
dev_dbg(&board_dat->pdev->dev, "%s data->irq_reg_sts=true\n", __func__);
err_return:
if (retval != 0) {
dev_err(&board_dat->pdev->dev,
"%s FAIL:invoking pch_spi_free_resources\n", __func__);

11
drivers/spi/spi-txx9.c
View File

@ -72,7 +72,6 @@
struct txx9spi {
struct workqueue_struct *workqueue;
struct work_struct work;
spinlock_t lock; /* protect 'queue' */
struct list_head queue;
@ -315,7 +314,7 @@ static int txx9spi_transfer(struct spi_device *spi, struct spi_message *m)
spin_lock_irqsave(&c->lock, flags);
list_add_tail(&m->queue, &c->queue);
queue_work(c->workqueue, &c->work);
schedule_work(&c->work);
spin_unlock_irqrestore(&c->lock, flags);
return 0;
@ -374,10 +373,6 @@ static int txx9spi_probe(struct platform_device *dev)
if (ret)
goto exit;
c->workqueue = create_singlethread_workqueue(
dev_name(master->dev.parent));
if (!c->workqueue)
goto exit_busy;
c->last_chipselect = -1;
dev_info(&dev->dev, "at %#llx, irq %d, %dMHz\n",
@ -400,8 +395,6 @@ static int txx9spi_probe(struct platform_device *dev)
exit_busy:
ret = -EBUSY;
exit:
if (c->workqueue)
destroy_workqueue(c->workqueue);
clk_disable(c->clk);
spi_master_put(master);
return ret;
@ -412,7 +405,7 @@ static int txx9spi_remove(struct platform_device *dev)
struct spi_master *master = platform_get_drvdata(dev);
struct txx9spi *c = spi_master_get_devdata(master);
destroy_workqueue(c->workqueue);
flush_work(&c->work);
clk_disable(c->clk);
return 0;
}

41
drivers/spi/spidev.c
View File

@ -29,6 +29,7 @@
#include <linux/compat.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/acpi.h>
#include <linux/spi/spi.h>
#include <linux/spi/spidev.h>
@ -700,6 +701,43 @@ static const struct of_device_id spidev_dt_ids[] = {
MODULE_DEVICE_TABLE(of, spidev_dt_ids);
#endif
#ifdef CONFIG_ACPI
/* Dummy SPI devices not to be used in production systems */
#define SPIDEV_ACPI_DUMMY 1
static const struct acpi_device_id spidev_acpi_ids[] = {
/*
* The ACPI SPT000* devices are only meant for development and
* testing. Systems used in production should have a proper ACPI
* description of the connected peripheral and they should also use
* a proper driver instead of poking directly to the SPI bus.
*/
{ "SPT0001", SPIDEV_ACPI_DUMMY },
{ "SPT0002", SPIDEV_ACPI_DUMMY },
{ "SPT0003", SPIDEV_ACPI_DUMMY },
{},
};
MODULE_DEVICE_TABLE(acpi, spidev_acpi_ids);
static void spidev_probe_acpi(struct spi_device *spi)
{
const struct acpi_device_id *id;
if (!has_acpi_companion(&spi->dev))
return;
id = acpi_match_device(spidev_acpi_ids, &spi->dev);
if (WARN_ON(!id))
return;
if (id->driver_data == SPIDEV_ACPI_DUMMY)
dev_warn(&spi->dev, "do not use this driver in production systems!\n");
}
#else
static inline void spidev_probe_acpi(struct spi_device *spi) {}
#endif
/*-------------------------------------------------------------------------*/
static int spidev_probe(struct spi_device *spi)
@ -719,6 +757,8 @@ static int spidev_probe(struct spi_device *spi)
!of_match_device(spidev_dt_ids, &spi->dev));
}
spidev_probe_acpi(spi);
/* Allocate driver data */
spidev = kzalloc(sizeof(*spidev), GFP_KERNEL);
if (!spidev)
@ -789,6 +829,7 @@ static struct spi_driver spidev_spi_driver = {
.driver = {
.name = "spidev",
.of_match_table = of_match_ptr(spidev_dt_ids),
.acpi_match_table = ACPI_PTR(spidev_acpi_ids),
},
.probe = spidev_probe,
.remove = spidev_remove,