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mfd: max77620: Support Maxim 77663 

Add support for Maxim 77663 using the Max77620 driver. The hardware
is very similar to Max77663/20024, although there are couple minor
differences.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Dmitry Osipenko 2019-05-05 18:43:23 +03:00 committed by Lee Jones
parent ea611d1cc1
commit 4c58f7012f
2 changed files with 69 additions and 1 deletions
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69
drivers/mfd/max77620.c
View File

@ -111,6 +111,26 @@ static const struct mfd_cell max20024_children[] = {
},
};
static const struct mfd_cell max77663_children[] = {
{ .name = "max77620-pinctrl", },
{ .name = "max77620-clock", },
{ .name = "max77663-pmic", },
{ .name = "max77620-watchdog", },
{
.name = "max77620-gpio",
.resources = gpio_resources,
.num_resources = ARRAY_SIZE(gpio_resources),
}, {
.name = "max77620-rtc",
.resources = rtc_resources,
.num_resources = ARRAY_SIZE(rtc_resources),
}, {
.name = "max77663-power",
.resources = power_resources,
.num_resources = ARRAY_SIZE(power_resources),
},
};
static const struct regmap_range max77620_readable_ranges[] = {
regmap_reg_range(MAX77620_REG_CNFGGLBL1, MAX77620_REG_DVSSD4),
};
@ -171,6 +191,35 @@ static const struct regmap_config max20024_regmap_config = {
.volatile_table = &max77620_volatile_table,
};
static const struct regmap_range max77663_readable_ranges[] = {
regmap_reg_range(MAX77620_REG_CNFGGLBL1, MAX77620_REG_CID5),
};
static const struct regmap_access_table max77663_readable_table = {
.yes_ranges = max77663_readable_ranges,
.n_yes_ranges = ARRAY_SIZE(max77663_readable_ranges),
};
static const struct regmap_range max77663_writable_ranges[] = {
regmap_reg_range(MAX77620_REG_CNFGGLBL1, MAX77620_REG_CID5),
};
static const struct regmap_access_table max77663_writable_table = {
.yes_ranges = max77663_writable_ranges,
.n_yes_ranges = ARRAY_SIZE(max77663_writable_ranges),
};
static const struct regmap_config max77663_regmap_config = {
.name = "power-slave",
.reg_bits = 8,
.val_bits = 8,
.max_register = MAX77620_REG_CID5 + 1,
.cache_type = REGCACHE_RBTREE,
.rd_table = &max77663_readable_table,
.wr_table = &max77663_writable_table,
.volatile_table = &max77620_volatile_table,
};
/*
* MAX77620 and MAX20024 has the following steps of the interrupt handling
* for TOP interrupts:
@ -240,6 +289,9 @@ static int max77620_get_fps_period_reg_value(struct max77620_chip *chip,
case MAX77620:
fps_min_period = MAX77620_FPS_PERIOD_MIN_US;
break;
case MAX77663:
fps_min_period = MAX20024_FPS_PERIOD_MIN_US;
break;
default:
return -EINVAL;
}
@ -274,6 +326,9 @@ static int max77620_config_fps(struct max77620_chip *chip,
case MAX77620:
fps_max_period = MAX77620_FPS_PERIOD_MAX_US;
break;
case MAX77663:
fps_max_period = MAX20024_FPS_PERIOD_MAX_US;
break;
default:
return -EINVAL;
}
@ -375,6 +430,9 @@ static int max77620_initialise_fps(struct max77620_chip *chip)
}
skip_fps:
if (chip->chip_id == MAX77663)
return 0;
/* Enable wake on EN0 pin */
ret = regmap_update_bits(chip->rmap, MAX77620_REG_ONOFFCNFG2,
MAX77620_ONOFFCNFG2_WK_EN0,
@ -453,6 +511,11 @@ static int max77620_probe(struct i2c_client *client,
n_mfd_cells = ARRAY_SIZE(max20024_children);
rmap_config = &max20024_regmap_config;
break;
case MAX77663:
mfd_cells = max77663_children;
n_mfd_cells = ARRAY_SIZE(max77663_children);
rmap_config = &max77663_regmap_config;
break;
default:
dev_err(chip->dev, "ChipID is invalid %d\n", chip->chip_id);
return -EINVAL;
@ -546,6 +609,9 @@ static int max77620_i2c_suspend(struct device *dev)
return ret;
}
if (chip->chip_id == MAX77663)
goto out;
/* Disable WK_EN0 */
ret = regmap_update_bits(chip->rmap, MAX77620_REG_ONOFFCNFG2,
MAX77620_ONOFFCNFG2_WK_EN0, 0);
@ -581,7 +647,7 @@ static int max77620_i2c_resume(struct device *dev)
* For MAX20024: No need to configure WKEN0 on resume as
* it is configured on Init.
*/
if (chip->chip_id == MAX20024)
if (chip->chip_id == MAX20024 || chip->chip_id == MAX77663)
goto out;
/* Enable WK_EN0 */
@ -603,6 +669,7 @@ out:
static const struct i2c_device_id max77620_id[] = {
{"max77620", MAX77620},
{"max20024", MAX20024},
{"max77663", MAX77663},
{},
};

1
include/linux/mfd/max77620.h
View File

@ -324,6 +324,7 @@ enum max77620_fps_src {
enum max77620_chip_id {
MAX77620,
MAX20024,
MAX77663,
};
struct max77620_chip {