[PATCH-v2] rtc: 88pm80x: add device tree support

Vaibhav Hiremath
2015-06-17T19:01:32Z

Along with DT support, this patch also cleans up the unnecessary
code around 'rtc_wakeup' initialization.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
---
Link to V1: https://lkml.org/lkml/2015/5/29/757

drivers/rtc/rtc-88pm80x.c | 28 +++++++++++++++++-----------
1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c
index 7df0579..8f66519 100644
--- a/drivers/rtc/rtc-88pm80x.c
+++ b/drivers/rtc/rtc-88pm80x.c
@@ -251,17 +251,26 @@ static SIMPLE_DEV_PM_OPS(pm80x_rtc_pm_ops, pm80x_rtc_suspend, pm80x_rtc_resume);
static int pm80x_rtc_probe(struct platform_device *pdev)
{
struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct pm80x_platform_data *pm80x_pdata =
- dev_get_platdata(pdev->dev.parent);
- struct pm80x_rtc_pdata *pdata = NULL;
+ struct pm80x_rtc_pdata *pdata = dev_get_platdata(&pdev->dev);
struct pm80x_rtc_info *info;
+ struct device_node *node = pdev->dev.of_node;
struct rtc_time tm;
unsigned long ticks = 0;
int ret;

- pdata = dev_get_platdata(&pdev->dev);
- if (pdata == NULL)
- dev_warn(&pdev->dev, "No platform data!\n");
+ if (!pdata && !node) {
+ dev_err(&pdev->dev,
+ "pm80x-rtc requires platform data or of_node\n");
+ return -EINVAL;
+ }
+
+ if (!pdata) {
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "failed to allocate memory\n");
+ return -ENOMEM;
+ }
+ }

info =
devm_kzalloc(&pdev->dev, sizeof(struct pm80x_rtc_info), GFP_KERNEL);
@@ -327,11 +336,8 @@ static int pm80x_rtc_probe(struct platform_device *pdev)
regmap_update_bits(info->map, PM800_RTC_CONTROL, PM800_RTC1_USE_XO,
PM800_RTC1_USE_XO);

- if (pm80x_pdata) {
- pdata = pm80x_pdata->rtc;
- if (pdata)
- info->rtc_dev->dev.platform_data = &pdata->rtc_wakeup;
- }
+ /* remeber whether this power up is caused by PMIC RTC or not */
+ info->rtc_dev->dev.platform_data = &pdata->rtc_wakeup;

device_init_wakeup(&pdev->dev, 1);

--
1.9.1