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Subject[PATCH 04/07] i2c: rework i2c-pxa suspend_late()/resume_early()
From: Magnus Damm <damm@igel.co.jp>

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>
---
Untested but compiles fine.

drivers/i2c/busses/i2c-pxa.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
--- 0001/drivers/i2c/busses/i2c-pxa.c
+++ work/drivers/i2c/busses/i2c-pxa.c 2009-06-01 15:26:06.000000000 +0900
@@ -1135,35 +1135,44 @@ static int __exit i2c_pxa_remove(struct
}

#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,
};

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