openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

I2C: Rework i2c-pxa suspend_late()/resume_early() 

This patch reworks platform driver power management code
for i2c-pxa from legacy late/early callbacks to dev_pm_ops.

The callbacks are converted for CONFIG_SUSPEND like this:
  suspend_late() -> suspend_noirq()
  resume_early() -> resume_noirq()

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2009-07-08 13:22:39 +02:00 committed by Rafael J. Wysocki
parent 4aebac2fb9
commit 57f4d4f1b7
1 changed files with 17 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/i2c/busses/i2c-pxa.c
View File

@ -1134,35 +1134,44 @@ static int __exit i2c_pxa_remove(struct platform_device *dev)
}
#ifdef CONFIG_PM
static int i2c_pxa_suspend_late(struct platform_device *dev, pm_message_t state)
static int i2c_pxa_suspend_noirq(struct device *dev)
{
struct pxa_i2c *i2c = platform_get_drvdata(dev);
struct platform_device *pdev = to_platform_device(dev);
struct pxa_i2c *i2c = platform_get_drvdata(pdev);
clk_disable(i2c->clk);
return 0;
}
static int i2c_pxa_resume_early(struct platform_device *dev)
static int i2c_pxa_resume_noirq(struct device *dev)
{
struct pxa_i2c *i2c = platform_get_drvdata(dev);
struct platform_device *pdev = to_platform_device(dev);
struct pxa_i2c *i2c = platform_get_drvdata(pdev);
clk_enable(i2c->clk);
i2c_pxa_reset(i2c);
return 0;
}
static struct dev_pm_ops i2c_pxa_dev_pm_ops = {
.suspend_noirq = i2c_pxa_suspend_noirq,
.resume_noirq = i2c_pxa_resume_noirq,
};
#define I2C_PXA_DEV_PM_OPS (&i2c_pxa_dev_pm_ops)
#else
#define i2c_pxa_suspend_late NULL
#define i2c_pxa_resume_early NULL
#define I2C_PXA_DEV_PM_OPS NULL
#endif
static struct platform_driver i2c_pxa_driver = {
.probe = i2c_pxa_probe,
.remove = __exit_p(i2c_pxa_remove),
.suspend_late = i2c_pxa_suspend_late,
.resume_early = i2c_pxa_resume_early,
.driver = {
.name = "pxa2xx-i2c",
.owner = THIS_MODULE,
.pm = I2C_PXA_DEV_PM_OPS,
},
.id_table = i2c_pxa_id_table,
};