[PATCHv4 3/8] rtc: add STM32 RTC driver

[amelie.delaunay@st.com (Amelie DELAUNAY)]

Hi Corentin,

Thanks for reviewing,

On 01/11/2017 02:04 PM, Corentin Labbe wrote:
> On Wed, Jan 11, 2017 at 01:48:25PM +0100, Amelie Delaunay wrote:
>> This patch adds support for the STM32 RTC.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> ---
>>  drivers/rtc/Kconfig     |  11 +
>>  drivers/rtc/Makefile    |   1 +
>>  drivers/rtc/rtc-stm32.c | 727 ++++++++++++++++++++++++++++++++++++++++++++++++
>>  3 files changed, 739 insertions(+)
>>  create mode 100644 drivers/rtc/rtc-stm32.c
>
> [...]
>> +/* STM32_PWR_CR */
>> +#define PWR_CR				0x00
>> +/* STM32_PWR_CR bit field */
>> +#define PWR_CR_DBP			BIT(8)
>> +
>> +static struct regmap *dbp;
>
> Hello
>
> Why using a global static struct ?
> You could alloc a private structure in probe for storing it and use platform_set_drvdata()
>
This is to stay closer to how this backup domain protection is managed 
in clk-stm32f4 driver, but I realize that I haven't the same 
constraints. I'll move this struct in my stm32_rtc private structure.

> Regards
>

Regards