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rtc: max77686: Add MAX77714 support

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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@lucaceresoli.net>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Luca Ceresoli 2022-02-23 18:59:08 +01:00 committed by Lee Jones
parent 3f6f1f1f9f
commit c58e496311
2 changed files with 25 additions and 1 deletions
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2
drivers/rtc/Kconfig
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@ -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.

24
drivers/rtc/rtc-max77686.c
View File

@ -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 */
@ -200,6 +201,28 @@ 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,
@ -843,6 +866,7 @@ 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);