hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

spi/atmel: improve the system suspend/resume functions implementation 

To make it cleaner, the system suspend/resume directly call
the runtime suspend/resume functions
and remove the wapper of CONFIG_PM_RUNTIME, CONFIG_PM_SLEEP.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Wenyou Yang 2014-10-21 11:43:34 +08:00 committed by Mark Brown
parent d0de6ff6b9
commit c1ee8f3fdf
1 changed files with 37 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
drivers/spi/spi-atmel.c
View File

@ -1451,51 +1451,6 @@ static int atmel_spi_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
static int atmel_spi_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct atmel_spi *as = spi_master_get_devdata(master);
int ret;
/* Stop the queue running */
ret = spi_master_suspend(master);
if (ret) {
dev_warn(dev, "cannot suspend master\n");
return ret;
}
if (!pm_runtime_suspended(dev)) {
clk_disable_unprepare(as->clk);
pinctrl_pm_select_sleep_state(dev);
}
return 0;
}
static int atmel_spi_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
struct atmel_spi *as = spi_master_get_devdata(master);
int ret;
if (!pm_runtime_suspended(dev)) {
pinctrl_pm_select_default_state(dev);
ret = clk_prepare_enable(as->clk);
if (ret)
return ret;
}
/* Start the queue running */
ret = spi_master_resume(master);
if (ret)
dev_err(dev, "problem starting queue (%d)\n", ret);
return ret;
}
#endif
#ifdef CONFIG_PM_RUNTIME
static int atmel_spi_runtime_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
@ -1516,7 +1471,43 @@ static int atmel_spi_runtime_resume(struct device *dev)
return clk_prepare_enable(as->clk);
}
#endif
static int atmel_spi_suspend(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
int ret;
/* Stop the queue running */
ret = spi_master_suspend(master);
if (ret) {
dev_warn(dev, "cannot suspend master\n");
return ret;
}
if (!pm_runtime_suspended(dev))
atmel_spi_runtime_suspend(dev);
return 0;
}
static int atmel_spi_resume(struct device *dev)
{
struct spi_master *master = dev_get_drvdata(dev);
int ret;
if (!pm_runtime_suspended(dev)) {
ret = atmel_spi_runtime_resume(dev);
if (ret)
return ret;
}
/* Start the queue running */
ret = spi_master_resume(master);
if (ret)
dev_err(dev, "problem starting queue (%d)\n", ret);
return ret;
}
static const struct dev_pm_ops atmel_spi_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(atmel_spi_suspend, atmel_spi_resume)