[PATCH v4 00/10] rtc: max77686: Extend driver and add max77802 support

[Andi Shyti]

Hi Javier,

In case I forgot any, for the whole patchset,

Reviewed-by: Andi Shyti <andi.shyti at samsung.com>

Andi

On Wed, Jan 27, 2016 at 12:36:36AM -0300, Javier Martinez Canillas wrote:
> Hello,
> 
> On a recent disussion [0] with Krzysztof Kozlowski and Laxman Dewangan,
> we came to the conclusion that the max77686 and max77802 RTC are almost
> the same with only a few differences so there shouldn't be two separate
> drivers and is better to extend max77686 driver and delete rtc-max77802.
> 
> By making the driver more generic, other RTC IP blocks from Maxim PMICs
> could be supported as well like the max77620.
> 
> This is a v4 of a series that do this, that address issues pointed out
> in the latest version. The v1, v2 and v3 can be found at [1], [2], [3].
> 
> I've tested this patch-set on an Exynos5800 Peach Pi Chromebook that has
> a max77802 PMIC and the RTC was working correctly. Krzysztof Kozlowski
> tested v3 on an max77686 but this version only has cosmetic changes so
> it should not cause any functionality changes.
> 
> [0]: http://www.spinics.net/lists/devicetree/msg110348.html
> [1]: https://lwn.net/Articles/672568/
> [2]: https://lkml.org/lkml/2016/1/25/767
> [3]: https://lkml.org/lkml/2016/1/26/787
> 
> Changes in v4:
> - Add Andi Shyti's Reviewed-by to patch #1.
> - Add Andi Shyti's Reviewed-by to patch #2.
> - Add Andi Shyti's Reviewed-by to patch #3.
> - Add Andi Shyti's Reviewed-by to patch #4.
> - Add Krzysztof Kozlowski's Reviewed-by and Tested-by tags to patch #4.
> - Add Krzysztof Kozlowski's Reviewed-by and Tested-by tags to patch #5.
> - Add Krzysztof Kozlowski's Tested-by tag to patch #6.
> - Add Andi Shyti's Reviewed-by tag to patch #6.
> - Reverse alarm enable reg check logic. Suggeted by Krzysztof Kozlowski.
> - Return early to avoid an else statement. Suggested by Andi Shyti.
> - Use dev_err() instead of dev_warn() and change message.
>   Suggested by Krzysztof Kozlowski and Andi Shyti.
> - Change subject line and commit message of patch #7.
> - Removed Laxman Dewangan's Acked-by tag since the patch changed.
> - Add Krzysztof Kozlowski's Tested-by tag to patch #8.
> - Add Andi Shyti's Reviewed-by tag to patch #8.
> 
> Changes in v3:
> - Add Krzysztof Kozlowski's Reviewed-by and Tested-by to patch #1.
> - Add Laxman Dewangan's Acked-by tag to patch #1.
> - Add Krzysztof Kozlowski's Tested-by tag to patch #2.
> - Add Laxman Dewangan's Acked-by tag to patch #2.
> - Use ARRAY_SIZE() in all places. Suggested by Laxman Dewangan.
> - Add Krzysztof Kozlowski's Tested-by tag to patch #3.
> - Add Laxman Dewangan's Acked-by tag to patch #3.
> - Fix max77686 delay. Suggested by Krzysztof Kozlowski.
> - Assign mask to u8 instead of int. Suggested by Krzysztof Kozlowski.
> - Add Laxman Dewangan's Acked-by tag to patch #4.
> - Add Laxman Dewangan's Acked-by tag to patch #5.
> - Add Laxman Dewangan's Acked-by tag to patch #6.
> - Add Laxman Dewangan's Acked-by tag to patch #7.
> - Add Laxman Dewangan's Acked-by tag to patch #8.
> 
> Changes in v2:
> - Add Krzysztof Kozlowski's Reviewed-by tag to patch #2.
> - Add Krzysztof Kozlowski's Reviewed-by tag to patch #3.
> - Fix typo error in changelog. Suggested by Krzysztof Kozlowski.
> - Add a max77686 prefix to rtc_driver_data. Suggested by Krzysztof Kozlowski.
> - Comment about the .delay and .mask fields. Suggested by Krzysztof Kozlowski.
> - Change .mask type to u8. Suggested by Krzysztof Kozlowski.
> - Make .drv_data field const. Suggested by Krzysztof Kozlowski.
> - Don't cast to drop const on .drv_data asign. Suggested by Krzysztof Kozlowski.
> - Use platform_get_device_id() macro. Suggested by Krzysztof Kozlowski.
> - Rename rtc_reg to max77686_rtc_reg_offset. Suggested by Krzysztof Kozlowski.
> - Comment what's mapped by max77686_map. Suggested by Krzysztof Kozlowski.
> - Use max77686_map array indexes in init. Suggested by Krzysztof Kozlowski.
> - Remove REG_RTC_UPDATE1 since is not used by neither max77686 nor max77802.
> - Add a MAX77802 prefix to ALARM_ENABLE_VALUE. Suggested by Krzysztof Kozlowski.
> - Rename .rtcae to .alarm_enable_reg and .rtcrm to .separate_i2c_addr.
>   Suggested by Krzysztof Kozlowski.
> - Don't use func and LINE in error messages. Suggested by Krzysztof Kozlowski.
> - Remove REG_RTC_AE2 since is not used by neither max77686 nor max77802.
> - Check if REG_RTC_AE1 has a valid address before accessing it.
> - Add Krzysztof Kozlowski's Reviewed-by tag to patch #8.
> - Add Krzysztof Kozlowski's Reviewed-by tag to patch #9.
> - Add Krzysztof Kozlowski's Reviewed-by tag to patch #10.
> 
> Javier Martinez Canillas (10):
>   rtc: max77686: Fix max77686_rtc_read_alarm() return value
>   rtc: max77686: Use ARRAY_SIZE() instead of current array length
>   rtc: max77686: Use usleep_range() instead of msleep()
>   rtc: max77686: Use a driver data struct instead hard-coded values
>   rtc: max77686: Add an indirection level to access RTC registers
>   rtc: max77686: Add max77802 support
>   rtc: max77686: Fix unsupported year message
>   rtc: Remove Maxim 77802 driver
>   ARM: exynos_defconfig: Remove MAX77802 RTC Kconfig symbol
>   ARM: multi_v7_defconfig: Remove MAX77802 RTC Kconfig symbol
> 
>  arch/arm/configs/exynos_defconfig   |   1 -
>  arch/arm/configs/multi_v7_defconfig |   1 -
>  drivers/rtc/Kconfig                 |  10 -
>  drivers/rtc/Makefile                |   1 -
>  drivers/rtc/rtc-max77686.c          | 325 ++++++++++++++++++-----
>  drivers/rtc/rtc-max77802.c          | 502 ------------------------------------
>  6 files changed, 264 insertions(+), 576 deletions(-)
>  delete mode 100644 drivers/rtc/rtc-max77802.c
> 
> -- 
> 2.5.0
> 
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