On 11/10/2021 22:25:50+0200, Luca Ceresoli wrote:
> The RTC included in the MAX77714 PMIC is very similar to the one in the
> MAX77686. Reuse the rtc-max77686.c driver with the minimum required changes
> for the MAX77714 RTC.
>
> Signed-off-by: Luca Ceresoli <luca@xxxxxxxxxxxxxxxx>
Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> ---
>
> *** NOTE ***
>
> This patch didn't reach most recipients having hit a limit in my service
> provider (125 e-mails per hour). I'm resending it, as far as possible with
> proper message-id etc. Apologies for any duplicate.
>
> drivers/rtc/Kconfig | 2 +-
> drivers/rtc/rtc-max77686.c | 24 ++++++++++++++++++++++++
> 2 files changed, 25 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index e1bc5214494e..a73591ad292b 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -375,7 +375,7 @@ config RTC_DRV_MAX8997
>
> config RTC_DRV_MAX77686
> tristate "Maxim MAX77686"
> - depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
> + depends on MFD_MAX77686 || MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
> help
> If you say yes here you will get support for the
> RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
> diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
> index 9901c596998a..e6564bc2171e 100644
> --- a/drivers/rtc/rtc-max77686.c
> +++ b/drivers/rtc/rtc-max77686.c
> @@ -19,6 +19,7 @@
>
> #define MAX77686_I2C_ADDR_RTC (0x0C >> 1)
> #define MAX77620_I2C_ADDR_RTC 0x68
> +#define MAX77714_I2C_ADDR_RTC 0x48
> #define MAX77686_INVALID_I2C_ADDR (-1)
>
> /* Define non existing register */
> @@ -203,6 +204,28 @@ static const struct max77686_rtc_driver_data max77686_drv_data = {
> .regmap_config = &max77686_rtc_regmap_config,
> };
>
> +static const struct regmap_irq_chip max77714_rtc_irq_chip = {
> + .name = "max77714-rtc",
> + .status_base = MAX77686_RTC_INT,
> + .mask_base = MAX77686_RTC_INTM,
> + .num_regs = 1,
> + .irqs = max77686_rtc_irqs,
> + .num_irqs = ARRAY_SIZE(max77686_rtc_irqs) - 1, /* no WTSR on 77714 */
> +};
> +
> +static const struct max77686_rtc_driver_data max77714_drv_data = {
> + .delay = 16000,
> + .mask = 0x7f,
> + .map = max77686_map,
> + .alarm_enable_reg = false,
> + .rtc_irq_from_platform = false,
> + /* On MAX77714 RTCA1 is BIT 1 of RTCINT (0x00). Not supported by this driver. */
> + .alarm_pending_status_reg = MAX77686_INVALID_REG,
> + .rtc_i2c_addr = MAX77714_I2C_ADDR_RTC,
> + .rtc_irq_chip = &max77714_rtc_irq_chip,
> + .regmap_config = &max77686_rtc_regmap_config,
> +};
> +
> static const struct regmap_config max77620_rtc_regmap_config = {
> .reg_bits = 8,
> .val_bits = 8,
> @@ -846,6 +869,7 @@ static const struct platform_device_id rtc_id[] = {
> { "max77686-rtc", .driver_data = (kernel_ulong_t)&max77686_drv_data, },
> { "max77802-rtc", .driver_data = (kernel_ulong_t)&max77802_drv_data, },
> { "max77620-rtc", .driver_data = (kernel_ulong_t)&max77620_drv_data, },
> + { "max77714-rtc", .driver_data = (kernel_ulong_t)&max77714_drv_data, },
> {},
> };
> MODULE_DEVICE_TABLE(platform, rtc_id);
> --
> 2.25.1
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
