rtc: max77686: Add MAX77714 support

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>

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index d85a3c3..f6d6d4c 100644 (file)
--- 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 5c64d08..b0250d9 100644 (file)
--- 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 */
@@ -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);