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-rw-r--r--drivers/mfd/Kconfig1
-rw-r--r--drivers/mfd/max8925-core.c142
-rw-r--r--include/linux/mfd/max8925.h96
3 files changed, 239 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index ee416eefb8e9..d63ab2eec661 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -197,6 +197,7 @@ config PMIC_ADP5520
config MFD_MAX8925
tristate "Maxim Semiconductor MAX8925 PMIC Support"
depends on I2C
+ select MFD_CORE
help
Say yes here to support for Maxim Semiconductor MAX8925. This is
a Power Management IC. This driver provies common support for
diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c
index 3e26267960b1..f36c494b80f1 100644
--- a/drivers/mfd/max8925-core.c
+++ b/drivers/mfd/max8925-core.c
@@ -20,6 +20,109 @@
#define IRQ_MODE_STATUS 0
#define IRQ_MODE_MASK 1
+static struct resource backlight_resources[] = {
+ {
+ .name = "max8925-backlight",
+ .start = MAX8925_WLED_MODE_CNTL,
+ .end = MAX8925_WLED_CNTL,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell backlight_devs[] = {
+ {
+ .name = "max8925-backlight",
+ .num_resources = 1,
+ .resources = &backlight_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource touch_resources[] = {
+ {
+ .name = "max8925-tsc",
+ .start = MAX8925_TSC_IRQ,
+ .end = MAX8925_ADC_RES_END,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell touch_devs[] = {
+ {
+ .name = "max8925-touch",
+ .num_resources = 1,
+ .resources = &touch_resources[0],
+ .id = -1,
+ },
+};
+
+#define MAX8925_REG_RESOURCE(_start, _end) \
+{ \
+ .start = MAX8925_##_start, \
+ .end = MAX8925_##_end, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource regulator_resources[] = {
+ MAX8925_REG_RESOURCE(SDCTL1, SDCTL1),
+ MAX8925_REG_RESOURCE(SDCTL2, SDCTL2),
+ MAX8925_REG_RESOURCE(SDCTL3, SDCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL1, LDOCTL1),
+ MAX8925_REG_RESOURCE(LDOCTL2, LDOCTL2),
+ MAX8925_REG_RESOURCE(LDOCTL3, LDOCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL4, LDOCTL4),
+ MAX8925_REG_RESOURCE(LDOCTL5, LDOCTL5),
+ MAX8925_REG_RESOURCE(LDOCTL6, LDOCTL6),
+ MAX8925_REG_RESOURCE(LDOCTL7, LDOCTL7),
+ MAX8925_REG_RESOURCE(LDOCTL8, LDOCTL8),
+ MAX8925_REG_RESOURCE(LDOCTL9, LDOCTL9),
+ MAX8925_REG_RESOURCE(LDOCTL10, LDOCTL10),
+ MAX8925_REG_RESOURCE(LDOCTL11, LDOCTL11),
+ MAX8925_REG_RESOURCE(LDOCTL12, LDOCTL12),
+ MAX8925_REG_RESOURCE(LDOCTL13, LDOCTL13),
+ MAX8925_REG_RESOURCE(LDOCTL14, LDOCTL14),
+ MAX8925_REG_RESOURCE(LDOCTL15, LDOCTL15),
+ MAX8925_REG_RESOURCE(LDOCTL16, LDOCTL16),
+ MAX8925_REG_RESOURCE(LDOCTL17, LDOCTL17),
+ MAX8925_REG_RESOURCE(LDOCTL18, LDOCTL18),
+ MAX8925_REG_RESOURCE(LDOCTL19, LDOCTL19),
+ MAX8925_REG_RESOURCE(LDOCTL20, LDOCTL20),
+};
+
+#define MAX8925_REG_DEVS(_id) \
+{ \
+ .name = "max8925-regulator", \
+ .num_resources = 1, \
+ .resources = &regulator_resources[MAX8925_ID_##_id], \
+ .id = MAX8925_ID_##_id, \
+}
+
+static struct mfd_cell regulator_devs[] = {
+ MAX8925_REG_DEVS(SD1),
+ MAX8925_REG_DEVS(SD2),
+ MAX8925_REG_DEVS(SD3),
+ MAX8925_REG_DEVS(LDO1),
+ MAX8925_REG_DEVS(LDO2),
+ MAX8925_REG_DEVS(LDO3),
+ MAX8925_REG_DEVS(LDO4),
+ MAX8925_REG_DEVS(LDO5),
+ MAX8925_REG_DEVS(LDO6),
+ MAX8925_REG_DEVS(LDO7),
+ MAX8925_REG_DEVS(LDO8),
+ MAX8925_REG_DEVS(LDO9),
+ MAX8925_REG_DEVS(LDO10),
+ MAX8925_REG_DEVS(LDO11),
+ MAX8925_REG_DEVS(LDO12),
+ MAX8925_REG_DEVS(LDO13),
+ MAX8925_REG_DEVS(LDO14),
+ MAX8925_REG_DEVS(LDO15),
+ MAX8925_REG_DEVS(LDO16),
+ MAX8925_REG_DEVS(LDO17),
+ MAX8925_REG_DEVS(LDO18),
+ MAX8925_REG_DEVS(LDO19),
+ MAX8925_REG_DEVS(LDO20),
+};
+
static int __get_irq_offset(struct max8925_chip *chip, int irq, int mode,
int *offset, int *bit)
{
@@ -210,6 +313,30 @@ static int __devinit device_gpm_init(struct max8925_chip *chip,
/* enable hard-reset for ONKEY power-off */
max8925_set_bits(i2c, MAX8925_SYSENSEL, 0x80, 0x80);
+
+ ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+ ARRAY_SIZE(regulator_devs),
+ &regulator_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add regulator subdev\n");
+ goto out_irq;
+ }
+
+ if (pdata && pdata->backlight) {
+ ret = mfd_add_devices(chip->dev, 0, &backlight_devs[0],
+ ARRAY_SIZE(backlight_devs),
+ &backlight_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add backlight subdev\n");
+ goto out_dev;
+ }
+ }
+ return 0;
+out_dev:
+ mfd_remove_devices(chip->dev);
+out_irq:
+ if (chip->chip_irq)
+ free_irq(chip->chip_irq, chip);
out:
return ret;
}
@@ -233,6 +360,20 @@ static int __devinit device_adc_init(struct max8925_chip *chip,
goto out;
}
chip->chip_irq = i2c->irq;
+
+ if (pdata && pdata->touch) {
+ ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
+ ARRAY_SIZE(touch_devs),
+ &touch_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add touch subdev\n");
+ goto out_irq;
+ }
+ }
+ return 0;
+out_irq:
+ if (chip->chip_irq)
+ free_irq(chip->chip_irq, chip);
out:
return ret;
}
@@ -255,6 +396,7 @@ void max8925_device_exit(struct max8925_chip *chip)
{
if (chip->chip_irq >= 0)
free_irq(chip->chip_irq, chip);
+ mfd_remove_devices(chip->dev);
}
MODULE_DESCRIPTION("PMIC Driver for Maxim MAX8925");
diff --git a/include/linux/mfd/max8925.h b/include/linux/mfd/max8925.h
index 2326246ddef2..b72dbe174d51 100644
--- a/include/linux/mfd/max8925.h
+++ b/include/linux/mfd/max8925.h
@@ -14,6 +14,33 @@
#include <linux/interrupt.h>
+/* Unified sub device IDs for MAX8925 */
+enum {
+ MAX8925_ID_SD1,
+ MAX8925_ID_SD2,
+ MAX8925_ID_SD3,
+ MAX8925_ID_LDO1,
+ MAX8925_ID_LDO2,
+ MAX8925_ID_LDO3,
+ MAX8925_ID_LDO4,
+ MAX8925_ID_LDO5,
+ MAX8925_ID_LDO6,
+ MAX8925_ID_LDO7,
+ MAX8925_ID_LDO8,
+ MAX8925_ID_LDO9,
+ MAX8925_ID_LDO10,
+ MAX8925_ID_LDO11,
+ MAX8925_ID_LDO12,
+ MAX8925_ID_LDO13,
+ MAX8925_ID_LDO14,
+ MAX8925_ID_LDO15,
+ MAX8925_ID_LDO16,
+ MAX8925_ID_LDO17,
+ MAX8925_ID_LDO18,
+ MAX8925_ID_LDO19,
+ MAX8925_ID_LDO20,
+};
+
/* Charger registers */
#define MAX8925_CHG_IRQ1 (0x7e)
#define MAX8925_CHG_IRQ2 (0x7f)
@@ -32,12 +59,65 @@
/* Touch registers */
#define MAX8925_TSC_IRQ (0x00)
#define MAX8925_TSC_IRQ_MASK (0x01)
+#define MAX8925_ADC_RES_END (0x6f)
/* RTC registers */
#define MAX8925_RTC_STATUS (0x1a)
#define MAX8925_RTC_IRQ (0x1c)
#define MAX8925_RTC_IRQ_MASK (0x1d)
+/* WLED registers */
+#define MAX8925_WLED_MODE_CNTL (0x84)
+#define MAX8925_WLED_CNTL (0x85)
+
+/* MAX8925 Registers */
+#define MAX8925_SDCTL1 (0x04)
+#define MAX8925_SDCTL2 (0x07)
+#define MAX8925_SDCTL3 (0x0A)
+#define MAX8925_SDV1 (0x06)
+#define MAX8925_SDV2 (0x09)
+#define MAX8925_SDV3 (0x0C)
+#define MAX8925_LDOCTL1 (0x18)
+#define MAX8925_LDOCTL2 (0x1C)
+#define MAX8925_LDOCTL3 (0x20)
+#define MAX8925_LDOCTL4 (0x24)
+#define MAX8925_LDOCTL5 (0x28)
+#define MAX8925_LDOCTL6 (0x2C)
+#define MAX8925_LDOCTL7 (0x30)
+#define MAX8925_LDOCTL8 (0x34)
+#define MAX8925_LDOCTL9 (0x38)
+#define MAX8925_LDOCTL10 (0x3C)
+#define MAX8925_LDOCTL11 (0x40)
+#define MAX8925_LDOCTL12 (0x44)
+#define MAX8925_LDOCTL13 (0x48)
+#define MAX8925_LDOCTL14 (0x4C)
+#define MAX8925_LDOCTL15 (0x50)
+#define MAX8925_LDOCTL16 (0x10)
+#define MAX8925_LDOCTL17 (0x14)
+#define MAX8925_LDOCTL18 (0x72)
+#define MAX8925_LDOCTL19 (0x5C)
+#define MAX8925_LDOCTL20 (0x9C)
+#define MAX8925_LDOVOUT1 (0x1A)
+#define MAX8925_LDOVOUT2 (0x1E)
+#define MAX8925_LDOVOUT3 (0x22)
+#define MAX8925_LDOVOUT4 (0x26)
+#define MAX8925_LDOVOUT5 (0x2A)
+#define MAX8925_LDOVOUT6 (0x2E)
+#define MAX8925_LDOVOUT7 (0x32)
+#define MAX8925_LDOVOUT8 (0x36)
+#define MAX8925_LDOVOUT9 (0x3A)
+#define MAX8925_LDOVOUT10 (0x3E)
+#define MAX8925_LDOVOUT11 (0x42)
+#define MAX8925_LDOVOUT12 (0x46)
+#define MAX8925_LDOVOUT13 (0x4A)
+#define MAX8925_LDOVOUT14 (0x4E)
+#define MAX8925_LDOVOUT15 (0x52)
+#define MAX8925_LDOVOUT16 (0x12)
+#define MAX8925_LDOVOUT17 (0x16)
+#define MAX8925_LDOVOUT18 (0x74)
+#define MAX8925_LDOVOUT19 (0x5E)
+#define MAX8925_LDOVOUT20 (0x9E)
+
/* bit definitions */
#define CHG_IRQ1_MASK (0x07)
#define CHG_IRQ2_MASK (0xff)
@@ -83,6 +163,8 @@ enum {
#define MAX8925_IRQ_TSC_STICK (0)
#define MAX8925_IRQ_TSC_NSTICK (1)
+#define MAX8925_MAX_REGULATOR (23)
+
struct max8925_irq {
irq_handler_t handler;
void *data;
@@ -100,7 +182,21 @@ struct max8925_chip {
int chip_irq;
};
+struct max8925_backlight_pdata {
+ int lxw_scl; /* 0/1 -- 0.8Ohm/0.4Ohm */
+ int lxw_freq; /* 700KHz ~ 1400KHz */
+ int dual_string; /* 0/1 -- single/dual string */
+};
+
+struct max8925_touch_pdata {
+ unsigned int flags;
+};
+
struct max8925_platform_data {
+ struct max8925_backlight_pdata *backlight;
+ struct max8925_touch_pdata *touch;
+ struct regulator_init_data *regulator[MAX8925_MAX_REGULATOR];
+
int chip_id;
int chip_irq;
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.