mfd: Support for ROHM BD71815 PMIC core

Add core support for ROHM BD71815 Power Management IC.

The IC integrates regulators, a battery charger with a coulomb counter,
a real-time clock (RTC), clock gate and general-purpose outputs (GPO).

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 360 insertions, 126 deletions

diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index 210261d026f2..714d9fcbf07b 100644
--- a/drivers/mfd/rohm-bd71828.c
+++ b/drivers/mfd/rohm-bd71828.c
@@ -2,7 +2,7 @@
 //
 // Copyright (C) 2019 ROHM Semiconductors
 //
-// ROHM BD71828 PMIC driver
+// ROHM BD71828/BD71815 PMIC driver
 
 #include <linux/gpio_keys.h>
 #include <linux/i2c.h>
@@ -11,7 +11,9 @@
 #include <linux/ioport.h>
 #include <linux/irq.h>
 #include <linux/mfd/core.h>
+#include <linux/mfd/rohm-bd71815.h>
 #include <linux/mfd/rohm-bd71828.h>
+#include <linux/mfd/rohm-generic.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
@@ -29,12 +31,84 @@ static struct gpio_keys_platform_data bd71828_powerkey_data = {
 	.name = "bd71828-pwrkey",
 };
 
-static const struct resource rtc_irqs[] = {
+static const struct resource bd71815_rtc_irqs[] = {
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC0, "bd71815-rtc-alm-0"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC1, "bd71815-rtc-alm-1"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC2, "bd71815-rtc-alm-2"),
+};
+
+static const struct resource bd71828_rtc_irqs[] = {
 	DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
 	DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
 	DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC2, "bd71828-rtc-alm-2"),
 };
 
+static struct resource bd71815_power_irqs[] = {
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_RMV, "bd71815-dcin-rmv"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CLPS_OUT, "bd71815-clps-out"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CLPS_IN, "bd71815-clps-in"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_OVP_RES, "bd71815-dcin-ovp-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_OVP_DET, "bd71815-dcin-ovp-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_MON_RES, "bd71815-dcin-mon-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_MON_DET, "bd71815-dcin-mon-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_UV_RES, "bd71815-vsys-uv-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_UV_DET, "bd71815-vsys-uv-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_LOW_RES, "bd71815-vsys-low-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_LOW_DET, "bd71815-vsys-low-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_MON_RES, "bd71815-vsys-mon-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_MON_RES, "bd71815-vsys-mon-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_WDG_TEMP, "bd71815-chg-wdg-temp"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_WDG_TIME, "bd71815-chg-wdg"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RECHARGE_RES, "bd71815-rechg-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RECHARGE_DET, "bd71815-rechg-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RANGED_TEMP_TRANSITION, "bd71815-ranged-temp-transit"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_STATE_TRANSITION, "bd71815-chg-state-change"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_TEMP_NORMAL, "bd71815-bat-temp-normal"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_TEMP_ERANGE, "bd71815-bat-temp-erange"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_REMOVED, "bd71815-bat-rmv"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_DETECTED, "bd71815-bat-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_THERM_REMOVED, "bd71815-therm-rmv"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_THERM_DETECTED, "bd71815-therm-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_DEAD, "bd71815-bat-dead"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_SHORTC_RES, "bd71815-bat-short-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_SHORTC_DET, "bd71815-bat-short-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_LOW_VOLT_RES, "bd71815-bat-low-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_LOW_VOLT_DET, "bd71815-bat-low-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_VOLT_RES, "bd71815-bat-over-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_VOLT_DET, "bd71815-bat-over-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_MON_RES, "bd71815-bat-mon-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_MON_DET, "bd71815-bat-mon-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON1, "bd71815-bat-cc-mon1"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON2, "bd71815-bat-cc-mon2"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON3, "bd71815-bat-cc-mon3"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_1_RES, "bd71815-bat-oc1-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_1_DET, "bd71815-bat-oc1-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_2_RES, "bd71815-bat-oc2-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_2_DET, "bd71815-bat-oc2-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_3_RES, "bd71815-bat-oc3-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_3_DET, "bd71815-bat-oc3-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_LOW_RES, "bd71815-bat-low-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_LOW_DET, "bd71815-bat-low-det"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_HI_RES, "bd71815-bat-hi-res"),
+	DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_HI_DET, "bd71815-bat-hi-det"),
+};
+
+static struct mfd_cell bd71815_mfd_cells[] = {
+	{ .name = "bd71815-pmic", },
+	{ .name = "bd71815-clk", },
+	{ .name = "bd71815-gpo", },
+	{
+		.name = "bd71815-power",
+		.num_resources = ARRAY_SIZE(bd71815_power_irqs),
+		.resources = &bd71815_power_irqs[0],
+	},
+	{
+		.name = "bd71815-rtc",
+		.num_resources = ARRAY_SIZE(bd71815_rtc_irqs),
+		.resources = &bd71815_rtc_irqs[0],
+	},
+};
+
 static struct mfd_cell bd71828_mfd_cells[] = {
 	{ .name = "bd71828-pmic", },
 	{ .name = "bd71828-gpio", },
@@ -47,8 +121,8 @@ static struct mfd_cell bd71828_mfd_cells[] = {
 	{ .name = "bd71827-power", },
 	{
 		.name = "bd71828-rtc",
-		.resources = rtc_irqs,
-		.num_resources = ARRAY_SIZE(rtc_irqs),
+		.resources = bd71828_rtc_irqs,
+		.num_resources = ARRAY_SIZE(bd71828_rtc_irqs),
 	}, {
 		.name = "gpio-keys",
 		.platform_data = &bd71828_powerkey_data,
@@ -56,7 +130,35 @@ static struct mfd_cell bd71828_mfd_cells[] = {
 	},
 };
 
-static const struct regmap_range volatile_ranges[] = {
+static const struct regmap_range bd71815_volatile_ranges[] = {
+	{
+		.range_min = BD71815_REG_SEC,
+		.range_max = BD71815_REG_YEAR,
+	}, {
+		.range_min = BD71815_REG_CONF,
+		.range_max = BD71815_REG_BAT_TEMP,
+	}, {
+		.range_min = BD71815_REG_VM_IBAT_U,
+		.range_max = BD71815_REG_CC_CTRL,
+	}, {
+		.range_min = BD71815_REG_CC_STAT,
+		.range_max = BD71815_REG_CC_CURCD_L,
+	}, {
+		.range_min = BD71815_REG_VM_BTMP_MON,
+		.range_max = BD71815_REG_VM_BTMP_MON,
+	}, {
+		.range_min = BD71815_REG_INT_STAT,
+		.range_max = BD71815_REG_INT_UPDATE,
+	}, {
+		.range_min = BD71815_REG_VM_VSYS_U,
+		.range_max = BD71815_REG_REX_CTRL_1,
+	}, {
+		.range_min = BD71815_REG_FULL_CCNTD_3,
+		.range_max = BD71815_REG_CCNTD_CHG_2,
+	},
+};
+
+static const struct regmap_range bd71828_volatile_ranges[] = {
 	{
 		.range_min = BD71828_REG_PS_CTRL_1,
 		.range_max = BD71828_REG_PS_CTRL_1,
@@ -80,15 +182,28 @@ static const struct regmap_range volatile_ranges[] = {
 	},
 };
 
-static const struct regmap_access_table volatile_regs = {
-	.yes_ranges = &volatile_ranges[0],
-	.n_yes_ranges = ARRAY_SIZE(volatile_ranges),
+static const struct regmap_access_table bd71815_volatile_regs = {
+	.yes_ranges = &bd71815_volatile_ranges[0],
+	.n_yes_ranges = ARRAY_SIZE(bd71815_volatile_ranges),
+};
+
+static const struct regmap_access_table bd71828_volatile_regs = {
+	.yes_ranges = &bd71828_volatile_ranges[0],
+	.n_yes_ranges = ARRAY_SIZE(bd71828_volatile_ranges),
+};
+
+static const struct regmap_config bd71815_regmap = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.volatile_table = &bd71815_volatile_regs,
+	.max_register = BD71815_MAX_REGISTER - 1,
+	.cache_type = REGCACHE_RBTREE,
 };
 
-static struct regmap_config bd71828_regmap = {
+static const struct regmap_config bd71828_regmap = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.volatile_table = &volatile_regs,
+	.volatile_table = &bd71828_volatile_regs,
 	.max_register = BD71828_MAX_REGISTER,
 	.cache_type = REGCACHE_RBTREE,
 };
@@ -96,7 +211,7 @@ static struct regmap_config bd71828_regmap = {
 /*
  * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
  * access corect sub-IRQ registers based on bits that are set in main IRQ
- * register.
+ * register. BD71815 and BD71828 have same sub-register-block offests.
  */
 
 static unsigned int bit0_offsets[] = {11};		/* RTC IRQ */
@@ -108,7 +223,7 @@ static unsigned int bit5_offsets[] = {3};		/* VSYS IRQ */
 static unsigned int bit6_offsets[] = {1, 2};		/* DCIN IRQ */
 static unsigned int bit7_offsets[] = {0};		/* BUCK IRQ */
 
-static struct regmap_irq_sub_irq_map bd71828_sub_irq_offsets[] = {
+static struct regmap_irq_sub_irq_map bd718xx_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
@@ -119,6 +234,88 @@ static struct regmap_irq_sub_irq_map bd71828_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
 };
 
+static const struct regmap_irq bd71815_irqs[] = {
+	REGMAP_IRQ_REG(BD71815_INT_BUCK1_OCP, 0, BD71815_INT_BUCK1_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BUCK2_OCP, 0, BD71815_INT_BUCK2_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BUCK3_OCP, 0, BD71815_INT_BUCK3_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BUCK4_OCP, 0, BD71815_INT_BUCK4_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BUCK5_OCP, 0, BD71815_INT_BUCK5_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_LED_OVP, 0, BD71815_INT_LED_OVP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_LED_OCP, 0, BD71815_INT_LED_OCP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_LED_SCP, 0, BD71815_INT_LED_SCP_MASK),
+	/* DCIN1 interrupts */
+	REGMAP_IRQ_REG(BD71815_INT_DCIN_RMV, 1, BD71815_INT_DCIN_RMV_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CLPS_OUT, 1, BD71815_INT_CLPS_OUT_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CLPS_IN, 1, BD71815_INT_CLPS_IN_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_DCIN_OVP_RES, 1, BD71815_INT_DCIN_OVP_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_DCIN_OVP_DET, 1, BD71815_INT_DCIN_OVP_DET_MASK),
+	/* DCIN2 interrupts */
+	REGMAP_IRQ_REG(BD71815_INT_DCIN_MON_RES, 2, BD71815_INT_DCIN_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_DCIN_MON_DET, 2, BD71815_INT_DCIN_MON_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_WDOG, 2, BD71815_INT_WDOG_MASK),
+	/* Vsys */
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_UV_RES, 3, BD71815_INT_VSYS_UV_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_UV_DET, 3, BD71815_INT_VSYS_UV_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_LOW_RES, 3, BD71815_INT_VSYS_LOW_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_LOW_DET, 3, BD71815_INT_VSYS_LOW_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_MON_RES, 3, BD71815_INT_VSYS_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_VSYS_MON_DET, 3, BD71815_INT_VSYS_MON_DET_MASK),
+	/* Charger */
+	REGMAP_IRQ_REG(BD71815_INT_CHG_WDG_TEMP, 4, BD71815_INT_CHG_WDG_TEMP_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CHG_WDG_TIME, 4, BD71815_INT_CHG_WDG_TIME_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CHG_RECHARGE_RES, 4, BD71815_INT_CHG_RECHARGE_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CHG_RECHARGE_DET, 4, BD71815_INT_CHG_RECHARGE_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CHG_RANGED_TEMP_TRANSITION, 4,
+		       BD71815_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_CHG_STATE_TRANSITION, 4, BD71815_INT_CHG_STATE_TRANSITION_MASK),
+	/* Battery */
+	REGMAP_IRQ_REG(BD71815_INT_BAT_TEMP_NORMAL, 5, BD71815_INT_BAT_TEMP_NORMAL_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_TEMP_ERANGE, 5, BD71815_INT_BAT_TEMP_ERANGE_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_REMOVED, 5, BD71815_INT_BAT_REMOVED_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_DETECTED, 5, BD71815_INT_BAT_DETECTED_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_THERM_REMOVED, 5, BD71815_INT_THERM_REMOVED_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_THERM_DETECTED, 5, BD71815_INT_THERM_DETECTED_MASK),
+	/* Battery Mon 1 */
+	REGMAP_IRQ_REG(BD71815_INT_BAT_DEAD, 6, BD71815_INT_BAT_DEAD_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_SHORTC_RES, 6, BD71815_INT_BAT_SHORTC_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_SHORTC_DET, 6, BD71815_INT_BAT_SHORTC_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_LOW_VOLT_RES, 6, BD71815_INT_BAT_LOW_VOLT_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_LOW_VOLT_DET, 6, BD71815_INT_BAT_LOW_VOLT_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_VOLT_RES, 6, BD71815_INT_BAT_OVER_VOLT_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_VOLT_DET, 6, BD71815_INT_BAT_OVER_VOLT_DET_MASK),
+	/* Battery Mon 2 */
+	REGMAP_IRQ_REG(BD71815_INT_BAT_MON_RES, 7, BD71815_INT_BAT_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_MON_DET, 7, BD71815_INT_BAT_MON_DET_MASK),
+	/* Battery Mon 3 (Coulomb counter) */
+	REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON1, 8, BD71815_INT_BAT_CC_MON1_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON2, 8, BD71815_INT_BAT_CC_MON2_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON3, 8, BD71815_INT_BAT_CC_MON3_MASK),
+	/* Battery Mon 4 */
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_1_RES, 9, BD71815_INT_BAT_OVER_CURR_1_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_1_DET, 9, BD71815_INT_BAT_OVER_CURR_1_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_2_RES, 9, BD71815_INT_BAT_OVER_CURR_2_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_2_DET, 9, BD71815_INT_BAT_OVER_CURR_2_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_3_RES, 9, BD71815_INT_BAT_OVER_CURR_3_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_3_DET, 9, BD71815_INT_BAT_OVER_CURR_3_DET_MASK),
+	/* Temperature */
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_LOW_RES, 10, BD71815_INT_TEMP_BAT_LOW_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_LOW_DET, 10, BD71815_INT_TEMP_BAT_LOW_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_HI_RES, 10, BD71815_INT_TEMP_BAT_HI_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_HI_DET, 10, BD71815_INT_TEMP_BAT_HI_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_125_RES, 10,
+		       BD71815_INT_TEMP_CHIP_OVER_125_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_125_DET, 10,
+		       BD71815_INT_TEMP_CHIP_OVER_125_DET_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_VF_RES, 10,
+		       BD71815_INT_TEMP_CHIP_OVER_VF_RES_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_VF_DET, 10,
+		       BD71815_INT_TEMP_CHIP_OVER_VF_DET_MASK),
+	/* RTC Alarm */
+	REGMAP_IRQ_REG(BD71815_INT_RTC0, 11, BD71815_INT_RTC0_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_RTC1, 11, BD71815_INT_RTC1_MASK),
+	REGMAP_IRQ_REG(BD71815_INT_RTC2, 11, BD71815_INT_RTC2_MASK),
+};
+
 static struct regmap_irq bd71828_irqs[] = {
 	REGMAP_IRQ_REG(BD71828_INT_BUCK1_OCP, 0, BD71828_INT_BUCK1_OCP_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_BUCK2_OCP, 0, BD71828_INT_BUCK2_OCP_MASK),
@@ -134,10 +331,8 @@ static struct regmap_irq bd71828_irqs[] = {
 	REGMAP_IRQ_REG(BD71828_INT_CLPS_OUT, 1, BD71828_INT_CLPS_OUT_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_CLPS_IN, 1, BD71828_INT_CLPS_IN_MASK),
 	/* DCIN2 interrupts */
-	REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_RES, 2,
-		       BD71828_INT_DCIN_MON_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_DET, 2,
-		       BD71828_INT_DCIN_MON_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_RES, 2, BD71828_INT_DCIN_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_DET, 2, BD71828_INT_DCIN_MON_DET_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_LONGPUSH, 2, BD71828_INT_LONGPUSH_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_MIDPUSH, 2, BD71828_INT_MIDPUSH_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_SHORTPUSH, 2, BD71828_INT_SHORTPUSH_MASK),
@@ -145,102 +340,59 @@ static struct regmap_irq bd71828_irqs[] = {
 	REGMAP_IRQ_REG(BD71828_INT_WDOG, 2, BD71828_INT_WDOG_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_SWRESET, 2, BD71828_INT_SWRESET_MASK),
 	/* Vsys */
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_RES, 3,
-		       BD71828_INT_VSYS_UV_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_DET, 3,
-		       BD71828_INT_VSYS_UV_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_RES, 3,
-		       BD71828_INT_VSYS_LOW_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_DET, 3,
-		       BD71828_INT_VSYS_LOW_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_IN, 3,
-		       BD71828_INT_VSYS_HALL_IN_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_TOGGLE, 3,
-		       BD71828_INT_VSYS_HALL_TOGGLE_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_RES, 3,
-		       BD71828_INT_VSYS_MON_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_DET, 3,
-		       BD71828_INT_VSYS_MON_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_RES, 3, BD71828_INT_VSYS_UV_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_DET, 3, BD71828_INT_VSYS_UV_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_RES, 3, BD71828_INT_VSYS_LOW_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_DET, 3, BD71828_INT_VSYS_LOW_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_IN, 3, BD71828_INT_VSYS_HALL_IN_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_TOGGLE, 3, BD71828_INT_VSYS_HALL_TOGGLE_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_RES, 3, BD71828_INT_VSYS_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_DET, 3, BD71828_INT_VSYS_MON_DET_MASK),
 	/* Charger */
-	REGMAP_IRQ_REG(BD71828_INT_CHG_DCIN_ILIM, 4,
-		       BD71828_INT_CHG_DCIN_ILIM_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_TOPOFF_TO_DONE, 4,
-		       BD71828_INT_CHG_TOPOFF_TO_DONE_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TEMP, 4,
-		       BD71828_INT_CHG_WDG_TEMP_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TIME, 4,
-		       BD71828_INT_CHG_WDG_TIME_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_RES, 4,
-		       BD71828_INT_CHG_RECHARGE_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_DET, 4,
-		       BD71828_INT_CHG_RECHARGE_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_DCIN_ILIM, 4, BD71828_INT_CHG_DCIN_ILIM_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_TOPOFF_TO_DONE, 4, BD71828_INT_CHG_TOPOFF_TO_DONE_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TEMP, 4, BD71828_INT_CHG_WDG_TEMP_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TIME, 4, BD71828_INT_CHG_WDG_TIME_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_RES, 4, BD71828_INT_CHG_RECHARGE_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_DET, 4, BD71828_INT_CHG_RECHARGE_DET_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_CHG_RANGED_TEMP_TRANSITION, 4,
 		       BD71828_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_CHG_STATE_TRANSITION, 4,
-		       BD71828_INT_CHG_STATE_TRANSITION_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_CHG_STATE_TRANSITION, 4, BD71828_INT_CHG_STATE_TRANSITION_MASK),
 	/* Battery */
-	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_NORMAL, 5,
-		       BD71828_INT_BAT_TEMP_NORMAL_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_ERANGE, 5,
-		       BD71828_INT_BAT_TEMP_ERANGE_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_WARN, 5,
-		       BD71828_INT_BAT_TEMP_WARN_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_REMOVED, 5,
-		       BD71828_INT_BAT_REMOVED_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_DETECTED, 5,
-		       BD71828_INT_BAT_DETECTED_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_THERM_REMOVED, 5,
-		       BD71828_INT_THERM_REMOVED_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_THERM_DETECTED, 5,
-		       BD71828_INT_THERM_DETECTED_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_NORMAL, 5, BD71828_INT_BAT_TEMP_NORMAL_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_ERANGE, 5, BD71828_INT_BAT_TEMP_ERANGE_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_WARN, 5, BD71828_INT_BAT_TEMP_WARN_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_REMOVED, 5, BD71828_INT_BAT_REMOVED_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_DETECTED, 5, BD71828_INT_BAT_DETECTED_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_THERM_REMOVED, 5, BD71828_INT_THERM_REMOVED_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_THERM_DETECTED, 5, BD71828_INT_THERM_DETECTED_MASK),
 	/* Battery Mon 1 */
 	REGMAP_IRQ_REG(BD71828_INT_BAT_DEAD, 6, BD71828_INT_BAT_DEAD_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_RES, 6,
-		       BD71828_INT_BAT_SHORTC_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_DET, 6,
-		       BD71828_INT_BAT_SHORTC_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_RES, 6,
-		       BD71828_INT_BAT_LOW_VOLT_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_DET, 6,
-		       BD71828_INT_BAT_LOW_VOLT_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_RES, 6,
-		       BD71828_INT_BAT_OVER_VOLT_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_DET, 6,
-		       BD71828_INT_BAT_OVER_VOLT_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_RES, 6, BD71828_INT_BAT_SHORTC_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_DET, 6, BD71828_INT_BAT_SHORTC_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_RES, 6, BD71828_INT_BAT_LOW_VOLT_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_DET, 6, BD71828_INT_BAT_LOW_VOLT_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_RES, 6, BD71828_INT_BAT_OVER_VOLT_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_DET, 6, BD71828_INT_BAT_OVER_VOLT_DET_MASK),
 	/* Battery Mon 2 */
-	REGMAP_IRQ_REG(BD71828_INT_BAT_MON_RES, 7,
-		       BD71828_INT_BAT_MON_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_MON_DET, 7,
-		       BD71828_INT_BAT_MON_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_MON_RES, 7, BD71828_INT_BAT_MON_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_MON_DET, 7, BD71828_INT_BAT_MON_DET_MASK),
 	/* Battery Mon 3 (Coulomb counter) */
-	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON1, 8,
-		       BD71828_INT_BAT_CC_MON1_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON2, 8,
-		       BD71828_INT_BAT_CC_MON2_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON3, 8,
-		       BD71828_INT_BAT_CC_MON3_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON1, 8, BD71828_INT_BAT_CC_MON1_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON2, 8, BD71828_INT_BAT_CC_MON2_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON3, 8, BD71828_INT_BAT_CC_MON3_MASK),
 	/* Battery Mon 4 */
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_RES, 9,
-		       BD71828_INT_BAT_OVER_CURR_1_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_DET, 9,
-		       BD71828_INT_BAT_OVER_CURR_1_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_RES, 9,
-		       BD71828_INT_BAT_OVER_CURR_2_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_DET, 9,
-		       BD71828_INT_BAT_OVER_CURR_2_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_RES, 9,
-		       BD71828_INT_BAT_OVER_CURR_3_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_DET, 9,
-		       BD71828_INT_BAT_OVER_CURR_3_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_RES, 9, BD71828_INT_BAT_OVER_CURR_1_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_DET, 9, BD71828_INT_BAT_OVER_CURR_1_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_RES, 9, BD71828_INT_BAT_OVER_CURR_2_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_DET, 9, BD71828_INT_BAT_OVER_CURR_2_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_RES, 9, BD71828_INT_BAT_OVER_CURR_3_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_DET, 9, BD71828_INT_BAT_OVER_CURR_3_DET_MASK),
 	/* Temperature */
-	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_RES, 10,
-		       BD71828_INT_TEMP_BAT_LOW_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_DET, 10,
-		       BD71828_INT_TEMP_BAT_LOW_DET_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_RES, 10,
-		       BD71828_INT_TEMP_BAT_HI_RES_MASK),
-	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_DET, 10,
-		       BD71828_INT_TEMP_BAT_HI_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_RES, 10, BD71828_INT_TEMP_BAT_LOW_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_DET, 10, BD71828_INT_TEMP_BAT_LOW_DET_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_RES, 10, BD71828_INT_TEMP_BAT_HI_RES_MASK),
+	REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_DET, 10, BD71828_INT_TEMP_BAT_HI_DET_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_RES, 10,
 		       BD71828_INT_TEMP_CHIP_OVER_125_RES_MASK),
 	REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_DET, 10,
@@ -267,57 +419,133 @@ static struct regmap_irq_chip bd71828_irq_chip = {
 	.init_ack_masked = true,
 	.num_regs = 12,
 	.num_main_regs = 1,
-	.sub_reg_offsets = &bd71828_sub_irq_offsets[0],
+	.sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
+	.num_main_status_bits = 8,
+	.irq_reg_stride = 1,
+};
+
+static struct regmap_irq_chip bd71815_irq_chip = {
+	.name = "bd71815_irq",
+	.main_status = BD71815_REG_INT_STAT,
+	.irqs = &bd71815_irqs[0],
+	.num_irqs = ARRAY_SIZE(bd71815_irqs),
+	.status_base = BD71815_REG_INT_STAT_01,
+	.mask_base = BD71815_REG_INT_EN_01,
+	.ack_base = BD71815_REG_INT_STAT_01,
+	.mask_invert = true,
+	.init_ack_masked = true,
+	.num_regs = 12,
+	.num_main_regs = 1,
+	.sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
 	.num_main_status_bits = 8,
 	.irq_reg_stride = 1,
 };
 
+static int set_clk_mode(struct device *dev, struct regmap *regmap,
+			int clkmode_reg)
+{
+	int ret;
+	unsigned int open_drain;
+
+	ret = of_property_read_u32(dev->of_node, "rohm,clkout-open-drain", &open_drain);
+	if (ret) {
+		if (ret == -EINVAL)
+			return 0;
+		return ret;
+	}
+	if (open_drain > 1) {
+		dev_err(dev, "bad clk32kout mode configuration");
+		return -EINVAL;
+	}
+
+	if (open_drain)
+		return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
+					  OUT32K_MODE_OPEN_DRAIN);
+
+	return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
+				  OUT32K_MODE_CMOS);
+}
+
 static int bd71828_i2c_probe(struct i2c_client *i2c)
 {
-	struct rohm_regmap_dev *chip;
 	struct regmap_irq_chip_data *irq_data;
 	int ret;
+	struct regmap *regmap;
+	const struct regmap_config *regmap_config;
+	struct regmap_irq_chip *irqchip;
+	unsigned int chip_type;
+	struct mfd_cell *mfd;
+	int cells;
+	int button_irq;
+	int clkmode_reg;
 
 	if (!i2c->irq) {
 		dev_err(&i2c->dev, "No IRQ configured\n");
 		return -EINVAL;
 	}
 
-	chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
-	dev_set_drvdata(&i2c->dev, chip);
+	chip_type = (unsigned int)(uintptr_t)
+		    of_device_get_match_data(&i2c->dev);
+	switch (chip_type) {
+	case ROHM_CHIP_TYPE_BD71828:
+		mfd = bd71828_mfd_cells;
+		cells = ARRAY_SIZE(bd71828_mfd_cells);
+		regmap_config = &bd71828_regmap;
+		irqchip = &bd71828_irq_chip;
+		clkmode_reg = BD71828_REG_OUT32K;
+		button_irq = BD71828_INT_SHORTPUSH;
+		break;
+	case ROHM_CHIP_TYPE_BD71815:
+		mfd = bd71815_mfd_cells;
+		cells = ARRAY_SIZE(bd71815_mfd_cells);
+		regmap_config = &bd71815_regmap;
+		irqchip = &bd71815_irq_chip;
+		clkmode_reg = BD71815_REG_OUT32K;
+		/*
+		 * If BD71817 support is needed we should be able to handle it
+		 * with proper DT configs + BD71815 drivers + power-button.
+		 * BD71815 data-sheet does not list the power-button IRQ so we
+		 * don't use it.
+		 */
+		button_irq = 0;
+		break;
+	default:
+		dev_err(&i2c->dev, "Unknown device type");
+		return -EINVAL;
+	}
 
-	chip->regmap = devm_regmap_init_i2c(i2c, &bd71828_regmap);
-	if (IS_ERR(chip->regmap)) {
+	regmap = devm_regmap_init_i2c(i2c, regmap_config);
+	if (IS_ERR(regmap)) {
 		dev_err(&i2c->dev, "Failed to initialize Regmap\n");
-		return PTR_ERR(chip->regmap);
+		return PTR_ERR(regmap);
 	}
 
-	ret = devm_regmap_add_irq_chip(&i2c->dev, chip->regmap,
-				       i2c->irq, IRQF_ONESHOT, 0,
-				       &bd71828_irq_chip, &irq_data);
+	ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, i2c->irq,
+				       IRQF_ONESHOT, 0, irqchip, &irq_data);
 	if (ret) {
 		dev_err(&i2c->dev, "Failed to add IRQ chip\n");
 		return ret;
 	}
 
 	dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
-		bd71828_irq_chip.num_irqs);
+		irqchip->num_irqs);
 
-	ret = regmap_irq_get_virq(irq_data, BD71828_INT_SHORTPUSH);
-	if (ret < 0) {
-		dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
-		return ret;
+	if (button_irq) {
+		ret = regmap_irq_get_virq(irq_data, button_irq);
+		if (ret < 0) {
+			dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
+			return ret;
+		}
+
+		button.irq = ret;
 	}
 
-	button.irq = ret;
+	ret = set_clk_mode(&i2c->dev, regmap, clkmode_reg);
+	if (ret)
+		return ret;
 
-	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
-				   bd71828_mfd_cells,
-				   ARRAY_SIZE(bd71828_mfd_cells), NULL, 0,
-				   regmap_irq_get_domain(irq_data));
+	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, mfd, cells,
+				   NULL, 0, regmap_irq_get_domain(irq_data));
 	if (ret)
 		dev_err(&i2c->dev, "Failed to create subdevices\n");
 
@@ -325,7 +553,13 @@ static int bd71828_i2c_probe(struct i2c_client *i2c)
 }
 
 static const struct of_device_id bd71828_of_match[] = {
-	{ .compatible = "rohm,bd71828", },
+	{
+		.compatible = "rohm,bd71828",
+		.data = (void *)ROHM_CHIP_TYPE_BD71828,
+	}, {
+		.compatible = "rohm,bd71815",
+		.data = (void *)ROHM_CHIP_TYPE_BD71815,
+	 },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bd71828_of_match);