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authorMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>2018-09-14 11:27:46 +0300
committerMark Brown <broonie@kernel.org>2018-09-28 14:56:46 +0100
commit494edd266b945f36908184433dd36eda1719cdb0 (patch)
treec9c78320be705b5a5b0abb315297e595ef861118 /drivers/mfd
parent2e0fe4d0c6ca59c3c05f9e6b0067d70cb9821500 (diff)
downloadlinux-494edd266b945f36908184433dd36eda1719cdb0.tar.bz2
regulator/mfd: Support ROHM BD71847 power management IC
BD71847 is reduced version of BD71837. DVS bucks 3 and 4 are removed as is LDO7. Voltage ranges of some regulators are expanded. Add initial support for BD71847 with BD71837 driver. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/rohm-bd718x7.c70
1 files changed, 29 insertions, 41 deletions
diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
index 75c8ec659547..ce5aa5cd3545 100644
--- a/drivers/mfd/rohm-bd718x7.c
+++ b/drivers/mfd/rohm-bd718x7.c
@@ -7,21 +7,16 @@
// Datasheet available from
// https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e
+#include <linux/gpio_keys.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/mfd/rohm-bd718x7.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/regmap.h>
-
-/*
- * gpio_keys.h requires definiton of bool. It is brought in
- * by above includes. Keep this as last until gpio_keys.h gets fixed.
- */
-#include <linux/gpio_keys.h>
-
-static const u8 supported_revisions[] = { 0xA2 /* BD71837 */ };
+#include <linux/types.h>
static struct gpio_keys_button button = {
.code = KEY_POWER,
@@ -41,8 +36,8 @@ static struct mfd_cell bd71837_mfd_cells[] = {
.platform_data = &bd718xx_powerkey_data,
.pdata_size = sizeof(bd718xx_powerkey_data),
},
- { .name = "bd71837-clk", },
- { .name = "bd71837-pmic", },
+ { .name = "bd718xx-clk", },
+ { .name = "bd718xx-pmic", },
};
static const struct regmap_irq bd71837_irqs[] = {
@@ -61,16 +56,16 @@ static struct regmap_irq_chip bd71837_irq_chip = {
.num_irqs = ARRAY_SIZE(bd71837_irqs),
.num_regs = 1,
.irq_reg_stride = 1,
- .status_base = BD71837_REG_IRQ,
- .mask_base = BD71837_REG_MIRQ,
- .ack_base = BD71837_REG_IRQ,
+ .status_base = BD718XX_REG_IRQ,
+ .mask_base = BD718XX_REG_MIRQ,
+ .ack_base = BD718XX_REG_IRQ,
.init_ack_masked = true,
.mask_invert = false,
};
static const struct regmap_range pmic_status_range = {
- .range_min = BD71837_REG_IRQ,
- .range_max = BD71837_REG_POW_STATE,
+ .range_min = BD718XX_REG_IRQ,
+ .range_max = BD718XX_REG_POW_STATE,
};
static const struct regmap_access_table volatile_regs = {
@@ -82,7 +77,7 @@ static const struct regmap_config bd71837_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_table = &volatile_regs,
- .max_register = BD71837_MAX_REGISTER - 1,
+ .max_register = BD718XX_MAX_REGISTER - 1,
.cache_type = REGCACHE_RBTREE,
};
@@ -90,8 +85,12 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct bd71837 *bd71837;
- int ret, i;
- unsigned int val;
+ int ret;
+
+ if (!i2c->irq) {
+ dev_err(&i2c->dev, "No IRQ configured\n");
+ return -EINVAL;
+ }
bd71837 = devm_kzalloc(&i2c->dev, sizeof(struct bd71837), GFP_KERNEL);
@@ -99,12 +98,8 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
return -ENOMEM;
bd71837->chip_irq = i2c->irq;
-
- if (!bd71837->chip_irq) {
- dev_err(&i2c->dev, "No IRQ configured\n");
- return -EINVAL;
- }
-
+ bd71837->chip_type = (unsigned int)(uintptr_t)
+ of_device_get_match_data(&i2c->dev);
bd71837->dev = &i2c->dev;
dev_set_drvdata(&i2c->dev, bd71837);
@@ -114,20 +109,6 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
return PTR_ERR(bd71837->regmap);
}
- ret = regmap_read(bd71837->regmap, BD71837_REG_REV, &val);
- if (ret) {
- dev_err(&i2c->dev, "Read BD71837_REG_DEVICE failed\n");
- return ret;
- }
- for (i = 0; i < ARRAY_SIZE(supported_revisions); i++)
- if (supported_revisions[i] == val)
- break;
-
- if (i == ARRAY_SIZE(supported_revisions)) {
- dev_err(&i2c->dev, "Unsupported chip revision\n");
- return -ENODEV;
- }
-
ret = devm_regmap_add_irq_chip(&i2c->dev, bd71837->regmap,
bd71837->chip_irq, IRQF_ONESHOT, 0,
&bd71837_irq_chip, &bd71837->irq_data);
@@ -138,7 +119,7 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
/* Configure short press to 10 milliseconds */
ret = regmap_update_bits(bd71837->regmap,
- BD71837_REG_PWRONCONFIG0,
+ BD718XX_REG_PWRONCONFIG0,
BD718XX_PWRBTN_PRESS_DURATION_MASK,
BD718XX_PWRBTN_SHORT_PRESS_10MS);
if (ret) {
@@ -149,7 +130,7 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
/* Configure long press to 10 seconds */
ret = regmap_update_bits(bd71837->regmap,
- BD71837_REG_PWRONCONFIG1,
+ BD718XX_REG_PWRONCONFIG1,
BD718XX_PWRBTN_PRESS_DURATION_MASK,
BD718XX_PWRBTN_LONG_PRESS_10S);
@@ -179,7 +160,14 @@ static int bd71837_i2c_probe(struct i2c_client *i2c,
}
static const struct of_device_id bd71837_of_match[] = {
- { .compatible = "rohm,bd71837", },
+ {
+ .compatible = "rohm,bd71837",
+ .data = (void *)BD718XX_TYPE_BD71837,
+ },
+ {
+ .compatible = "rohm,bd71847",
+ .data = (void *)BD718XX_TYPE_BD71847,
+ },
{ }
};
MODULE_DEVICE_TABLE(of, bd71837_of_match);