diff options
| -rw-r--r-- | sound/soc/codecs/rt9120.c | 111 |
1 files changed, 105 insertions, 6 deletions
diff --git a/sound/soc/codecs/rt9120.c b/sound/soc/codecs/rt9120.c index 94d42be8d840..da495bdc8415 100644 --- a/sound/soc/codecs/rt9120.c +++ b/sound/soc/codecs/rt9120.c @@ -7,6 +7,7 @@ #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <sound/pcm.h> @@ -75,6 +76,7 @@ enum { struct rt9120_data { struct device *dev; struct regmap *regmap; + struct gpio_desc *pwdnn_gpio; int chip_idx; }; @@ -160,6 +162,8 @@ static int rt9120_codec_probe(struct snd_soc_component *comp) snd_soc_component_init_regmap(comp, data->regmap); + pm_runtime_get_sync(comp->dev); + /* Internal setting */ if (data->chip_idx == CHIP_IDX_RT9120S) { snd_soc_component_write(comp, RT9120_REG_INTERCFG, 0xde); @@ -167,6 +171,9 @@ static int rt9120_codec_probe(struct snd_soc_component *comp) } else snd_soc_component_write(comp, RT9120_REG_INTERNAL0, 0x04); + pm_runtime_mark_last_busy(comp->dev); + pm_runtime_put(comp->dev); + return 0; } @@ -338,6 +345,18 @@ static const struct regmap_access_table rt9120_wr_table = { .n_yes_ranges = ARRAY_SIZE(rt9120_wr_yes_ranges), }; +static bool rt9120_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x00 ... 0x01: + case 0x10: + case 0x30 ... 0x40: + return true; + default: + return false; + } +} + static int rt9120_get_reg_size(unsigned int reg) { switch (reg) { @@ -397,14 +416,49 @@ static int rt9120_reg_write(void *context, unsigned int reg, unsigned int val) return i2c_smbus_write_i2c_block_data(i2c, reg, size, rawp + offs); } +static const struct reg_default rt9120_reg_defaults[] = { + { .reg = 0x02, .def = 0x02 }, + { .reg = 0x03, .def = 0xf2 }, + { .reg = 0x04, .def = 0x01 }, + { .reg = 0x05, .def = 0xc0 }, + { .reg = 0x06, .def = 0x28 }, + { .reg = 0x07, .def = 0x04 }, + { .reg = 0x08, .def = 0xff }, + { .reg = 0x09, .def = 0x01 }, + { .reg = 0x0a, .def = 0x01 }, + { .reg = 0x0b, .def = 0x00 }, + { .reg = 0x0c, .def = 0x04 }, + { .reg = 0x11, .def = 0x30 }, + { .reg = 0x12, .def = 0x08 }, + { .reg = 0x13, .def = 0x12 }, + { .reg = 0x14, .def = 0x09 }, + { .reg = 0x15, .def = 0x00 }, + { .reg = 0x20, .def = 0x7ff }, + { .reg = 0x21, .def = 0x180 }, + { .reg = 0x22, .def = 0x180 }, + { .reg = 0x23, .def = 0x00 }, + { .reg = 0x24, .def = 0x80 }, + { .reg = 0x25, .def = 0x180 }, + { .reg = 0x26, .def = 0x640 }, + { .reg = 0x27, .def = 0x180 }, + { .reg = 0x63, .def = 0x5e }, + { .reg = 0x65, .def = 0x66 }, + { .reg = 0x6c, .def = 0xe0 }, + { .reg = 0xf8, .def = 0x44 }, +}; + static const struct regmap_config rt9120_regmap_config = { .reg_bits = 8, .val_bits = 32, .max_register = RT9120_REG_DIGCFG, + .reg_defaults = rt9120_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(rt9120_reg_defaults), + .cache_type = REGCACHE_RBTREE, .reg_read = rt9120_reg_read, .reg_write = rt9120_reg_write, + .volatile_reg = rt9120_volatile_reg, .wr_table = &rt9120_wr_table, .rd_table = &rt9120_rd_table, }; @@ -450,7 +504,6 @@ static int rt9120_do_register_reset(struct rt9120_data *data) static int rt9120_probe(struct i2c_client *i2c) { struct rt9120_data *data; - struct gpio_desc *pwdnn_gpio; struct regulator *dvdd_supply; int dvdd_supply_volt, ret; @@ -461,12 +514,12 @@ static int rt9120_probe(struct i2c_client *i2c) data->dev = &i2c->dev; i2c_set_clientdata(i2c, data); - pwdnn_gpio = devm_gpiod_get_optional(&i2c->dev, "pwdnn", - GPIOD_OUT_HIGH); - if (IS_ERR(pwdnn_gpio)) { + data->pwdnn_gpio = devm_gpiod_get_optional(&i2c->dev, "pwdnn", + GPIOD_OUT_HIGH); + if (IS_ERR(data->pwdnn_gpio)) { dev_err(&i2c->dev, "Failed to initialize 'pwdnn' gpio\n"); - return PTR_ERR(pwdnn_gpio); - } else if (pwdnn_gpio) { + return PTR_ERR(data->pwdnn_gpio); + } else if (data->pwdnn_gpio) { dev_dbg(&i2c->dev, "'pwdnn' from low to high, wait chip on\n"); msleep(RT9120_CHIPON_WAITMS); } @@ -508,11 +561,55 @@ static int rt9120_probe(struct i2c_client *i2c) } } + pm_runtime_set_autosuspend_delay(&i2c->dev, 1000); + pm_runtime_use_autosuspend(&i2c->dev); + pm_runtime_set_active(&i2c->dev); + pm_runtime_mark_last_busy(&i2c->dev); + pm_runtime_enable(&i2c->dev); + return devm_snd_soc_register_component(&i2c->dev, &rt9120_component_driver, &rt9120_dai, 1); } +static int rt9120_remove(struct i2c_client *i2c) +{ + pm_runtime_disable(&i2c->dev); + pm_runtime_set_suspended(&i2c->dev); + return 0; +} + +static int __maybe_unused rt9120_runtime_suspend(struct device *dev) +{ + struct rt9120_data *data = dev_get_drvdata(dev); + + if (data->pwdnn_gpio) { + regcache_cache_only(data->regmap, true); + regcache_mark_dirty(data->regmap); + gpiod_set_value(data->pwdnn_gpio, 0); + } + + return 0; +} + +static int __maybe_unused rt9120_runtime_resume(struct device *dev) +{ + struct rt9120_data *data = dev_get_drvdata(dev); + + if (data->pwdnn_gpio) { + gpiod_set_value(data->pwdnn_gpio, 1); + msleep(RT9120_CHIPON_WAITMS); + regcache_cache_only(data->regmap, false); + regcache_sync(data->regmap); + } + + return 0; +} + +static const struct dev_pm_ops rt9120_pm_ops = { + SET_RUNTIME_PM_OPS(rt9120_runtime_suspend, rt9120_runtime_resume, NULL) +}; + static const struct of_device_id __maybe_unused rt9120_device_table[] = { { .compatible = "richtek,rt9120", }, { } @@ -523,8 +620,10 @@ static struct i2c_driver rt9120_driver = { .driver = { .name = "rt9120", .of_match_table = rt9120_device_table, + .pm = &rt9120_pm_ops, }, .probe_new = rt9120_probe, + .remove = rt9120_remove, }; module_i2c_driver(rt9120_driver); |