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mfd: 88pm860x: Device tree support

Browse source 
Signed-off-by: Haojian Zhuang <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Haojian Zhuang 2012-09-21 18:06:52 +08:00 • committed by Samuel Ortiz
commit 2e57d56747
10 changed files with 351 additions and 41 deletions
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43
drivers/rtc/rtc-88pm860x.c
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@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mutex.h>
@ -284,6 +285,28 @@ out:
}
#endif
#ifdef CONFIG_OF
static int __devinit pm860x_rtc_dt_init(struct platform_device *pdev,
struct pm860x_rtc_info *info)
{
struct device_node *np = pdev->dev.parent->of_node;
int ret;
if (!np)
return -ENODEV;
np = of_find_node_by_name(np, "rtc");
if (!np) {
dev_err(&pdev->dev, "failed to find rtc node\n");
return -ENODEV;
}
ret = of_property_read_u32(np, "marvell,88pm860x-vrtc", &info->vrtc);
if (ret)
info->vrtc = 0;
return 0;
}
#else
#define pm860x_rtc_dt_init(x, y) (-1)
#endif
static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -294,8 +317,6 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
int ret;
pdata = pdev->dev.platform_data;
if (pdata == NULL)
dev_warn(&pdev->dev, "No platform data!\n");
info = kzalloc(sizeof(struct pm860x_rtc_info), GFP_KERNEL);
if (!info)
@ -345,9 +366,11 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
}
}
rtc_tm_to_time(&tm, &ticks);
if (pdata && pdata->sync) {
pdata->sync(ticks);
info->sync = pdata->sync;
if (pm860x_rtc_dt_init(pdev, info)) {
if (pdata && pdata->sync) {
pdata->sync(ticks);
info->sync = pdata->sync;
}
}
info->rtc_dev = rtc_device_register("88pm860x-rtc", &pdev->dev,
@ -366,10 +389,12 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
#ifdef VRTC_CALIBRATION
/* <00> -- 2.7V, <01> -- 2.9V, <10> -- 3.1V, <11> -- 3.3V */
if (pdata && pdata->vrtc)
info->vrtc = pdata->vrtc & 0x3;
else
info->vrtc = 1;
if (pm860x_rtc_dt_init(pdev, info)) {
if (pdata && pdata->vrtc)
info->vrtc = pdata->vrtc & 0x3;
else
info->vrtc = 1;
}
pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, MEAS2_VRTC);
/* calibrate VRTC */