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mfd: Add subdevs in max8925

Browse source 
Add subdevs in MAX8925. MAX8925 includes regulator, backlight and touch
components.

Signed-off-by: Haojian Zhuang <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Haojian Zhuang 2010-01-08 12:43:29 -05:00 • committed by Samuel Ortiz
commit 1ad998934e
3 changed files with 239 additions and 0 deletions
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1
drivers/mfd/Kconfig
View file

@ -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

142
drivers/mfd/max8925-core.c
View file

@ -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");