The MAX9768 is pretty straight forward to convert to GPIO descriptors.

To name the GPIO properties, I looke at the bindings in maxim,max9759.yaml which names these GPIO "mute" and "shutdown" respectively.

No board files using platform data exist in the kernel, new users can use GPIO descriptor tables if desired.

Signed-off-by: Linus Walleij linus.walleij@linaro.org --- include/sound/max9768.h | 4 ---- sound/soc/codecs/max9768.c | 45 +++++++++++++++++++++++---------------------- 2 files changed, 23 insertions(+), 26 deletions(-)

diff --git a/include/sound/max9768.h b/include/sound/max9768.h index 0f78b41d030e..8509ba0079b0 100644 --- a/include/sound/max9768.h +++ b/include/sound/max9768.h @@ -9,14 +9,10 @@

/** * struct max9768_pdata - optional platform specific MAX9768 configuration - * @shdn_gpio: GPIO to SHDN pin. If not valid, pin must be hardwired HIGH - * @mute_gpio: GPIO to MUTE pin. If not valid, control for mute won't be added * @flags: configuration flags, e.g. set classic PWM mode (check datasheet * regarding "filterless modulation" which is default). */ struct max9768_pdata { - int shdn_gpio; - int mute_gpio; unsigned flags; #define MAX9768_FLAG_CLASSIC_PWM (1 << 0) }; diff --git a/sound/soc/codecs/max9768.c b/sound/soc/codecs/max9768.c index d22b4ba51ed8..8d0ca1be99c0 100644 --- a/sound/soc/codecs/max9768.c +++ b/sound/soc/codecs/max9768.c @@ -9,7 +9,7 @@ #include <linux/module.h> #include <linux/i2c.h> #include <linux/slab.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/regmap.h>

#include <sound/core.h> @@ -27,8 +27,8 @@

struct max9768 { struct regmap *regmap; - int mute_gpio; - int shdn_gpio; + struct gpio_desc *mute; + struct gpio_desc *shdn; u32 flags; };

@@ -42,7 +42,7 @@ static int max9768_get_gpio(struct snd_kcontrol *kcontrol, { struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol); struct max9768 *max9768 = snd_soc_component_get_drvdata(c); - int val = gpio_get_value_cansleep(max9768->mute_gpio); + int val = gpiod_get_value_cansleep(max9768->mute);

ucontrol->value.integer.value[0] = !val;

@@ -55,7 +55,7 @@ static int max9768_set_gpio(struct snd_kcontrol *kcontrol, struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol); struct max9768 *max9768 = snd_soc_component_get_drvdata(c);

- gpio_set_value_cansleep(max9768->mute_gpio, !ucontrol->value.integer.value[0]); + gpiod_set_value_cansleep(max9768->mute, !ucontrol->value.integer.value[0]);

return 0; } @@ -138,7 +138,7 @@ static int max9768_probe(struct snd_soc_component *component) return ret; }

- if (gpio_is_valid(max9768->mute_gpio)) { + if (max9768->mute) { ret = snd_soc_add_component_controls(component, max9768_mute, ARRAY_SIZE(max9768_mute)); if (ret) @@ -171,28 +171,29 @@ static int max9768_i2c_probe(struct i2c_client *client) { struct max9768 *max9768; struct max9768_pdata *pdata = client->dev.platform_data; - int err;

max9768 = devm_kzalloc(&client->dev, sizeof(*max9768), GFP_KERNEL); if (!max9768) return -ENOMEM;

- if (pdata) { - /* Mute on powerup to avoid clicks */ - err = devm_gpio_request_one(&client->dev, pdata->mute_gpio, - GPIOF_INIT_HIGH, "MAX9768 Mute"); - max9768->mute_gpio = err ?: pdata->mute_gpio; - - /* Activate chip by releasing shutdown, enables I2C */ - err = devm_gpio_request_one(&client->dev, pdata->shdn_gpio, - GPIOF_INIT_HIGH, "MAX9768 Shutdown"); - max9768->shdn_gpio = err ?: pdata->shdn_gpio; - + /* Mute on powerup to avoid clicks */ + max9768->mute = devm_gpiod_get_optional(&client->dev, + "mute", + GPIOD_OUT_HIGH); + if (IS_ERR(max9768->mute)) + return PTR_ERR(max9768->mute); + gpiod_set_consumer_name(max9768->mute, "MAX9768 Mute"); + + /* Activate chip by releasing shutdown, enables I2C */ + max9768->shdn = devm_gpiod_get_optional(&client->dev, + "shutdown", + GPIOD_OUT_HIGH); + if (IS_ERR(max9768->shdn)) + return PTR_ERR(max9768->shdn); + gpiod_set_consumer_name(max9768->shdn, "MAX9768 Shutdown"); + + if (pdata) max9768->flags = pdata->flags; - } else { - max9768->shdn_gpio = -EINVAL; - max9768->mute_gpio = -EINVAL; - }

i2c_set_clientdata(client, max9768);

Instead of relying on legacy interfaces, convert the driver to use GPIO descriptors. This is a straight-forward conversion, we support also sdw devices providing GPIO descriptor tables if they so desire.

Signed-off-by: Linus Walleij linus.walleij@linaro.org --- sound/soc/codecs/max98373-i2c.c | 17 ----------------- sound/soc/codecs/max98373.c | 35 +++++++++++++++++++---------------- sound/soc/codecs/max98373.h | 2 +- 3 files changed, 20 insertions(+), 34 deletions(-)

diff --git a/sound/soc/codecs/max98373-i2c.c b/sound/soc/codecs/max98373-i2c.c index 0fa5ceca62a2..e7ec7875c4a9 100644 --- a/sound/soc/codecs/max98373-i2c.c +++ b/sound/soc/codecs/max98373-i2c.c @@ -3,12 +3,10 @@

#include <linux/acpi.h> #include <linux/delay.h> -#include <linux/gpio.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/pm.h> #include <linux/regmap.h> #include <linux/slab.h> @@ -560,21 +558,6 @@ static int max98373_i2c_probe(struct i2c_client *i2c) /* voltage/current slot & gpio configuration */ max98373_slot_config(&i2c->dev, max98373);

- /* Power on device */ - if (gpio_is_valid(max98373->reset_gpio)) { - ret = devm_gpio_request(&i2c->dev, max98373->reset_gpio, - "MAX98373_RESET"); - if (ret) { - dev_err(&i2c->dev, "%s: Failed to request gpio %d\n", - __func__, max98373->reset_gpio); - return -EINVAL; - } - gpio_direction_output(max98373->reset_gpio, 0); - msleep(50); - gpio_direction_output(max98373->reset_gpio, 1); - msleep(20); - } - /* Check Revision ID */ ret = regmap_read(max98373->regmap, MAX98373_R21FF_REV_ID, &reg); diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c index fde055c6c894..33eb4576da23 100644 --- a/sound/soc/codecs/max98373.c +++ b/sound/soc/codecs/max98373.c @@ -12,9 +12,8 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <sound/tlv.h> #include "max98373.h"

@@ -478,20 +477,24 @@ void max98373_slot_config(struct device *dev, max98373->i_slot = value & 0xF; else max98373->i_slot = 1; - if (dev->of_node) { - max98373->reset_gpio = of_get_named_gpio(dev->of_node, - "maxim,reset-gpio", 0); - if (!gpio_is_valid(max98373->reset_gpio)) { - dev_err(dev, "Looking up %s property in node %s failed %d\n", - "maxim,reset-gpio", dev->of_node->full_name, - max98373->reset_gpio); - } else { - dev_dbg(dev, "maxim,reset-gpio=%d", - max98373->reset_gpio); - } - } else { - /* this makes reset_gpio as invalid */ - max98373->reset_gpio = -1; + + /* This will assert RESET */ + max98373->reset = devm_gpiod_get_optional(dev, + "maxim,reset", + GPIOD_OUT_HIGH); + if (IS_ERR(max98373->reset)) { + dev_err(dev, "error %ld looking up RESET GPIO line\n", + PTR_ERR(max98373->reset)); + return; + } + + /* Cycle reset */ + if (max98373->reset) { + gpiod_set_consumer_name(max98373->reset ,"MAX98373_RESET"); + gpiod_direction_output(max98373->reset, 1); + msleep(50); + gpiod_direction_output(max98373->reset, 0); + msleep(20); }

if (!device_property_read_u32(dev, "maxim,spkfb-slot-no", &value)) diff --git a/sound/soc/codecs/max98373.h b/sound/soc/codecs/max98373.h index e1810b3b1620..af3b62217497 100644 --- a/sound/soc/codecs/max98373.h +++ b/sound/soc/codecs/max98373.h @@ -213,7 +213,7 @@ struct max98373_cache {

struct max98373_priv { struct regmap *regmap; - int reset_gpio; + struct gpio_desc *reset; unsigned int v_slot; unsigned int i_slot; unsigned int spkfb_slot;

This driver is already using solely GPIO descriptors and do not need to include the legacy header <linux/gpio.h>. Drop it.

Signed-off-by: Linus Walleij linus.walleij@linaro.org --- sound/soc/codecs/max98396.c | 1 - 1 file changed, 1 deletion(-)

diff --git a/sound/soc/codecs/max98396.c b/sound/soc/codecs/max98396.c index 3a1d8c211f3c..e52bb2266fa1 100644 --- a/sound/soc/codecs/max98396.c +++ b/sound/soc/codecs/max98396.c @@ -7,7 +7,6 @@ #include <sound/pcm_params.h> #include <linux/regulator/consumer.h> #include <sound/soc.h> -#include <linux/gpio.h> #include <sound/tlv.h> #include "max98396.h"

This driver is already using solely GPIO descriptors and do not need to include the legacy headers <linux/gpio.h> or <linux/of_gpio.h>. Drop them.

Signed-off-by: Linus Walleij linus.walleij@linaro.org --- sound/soc/codecs/max98927.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/sound/soc/codecs/max98927.c b/sound/soc/codecs/max98927.c index 776f23d38ac5..70db9d3ff5a5 100644 --- a/sound/soc/codecs/max98927.c +++ b/sound/soc/codecs/max98927.c @@ -15,9 +15,7 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> -#include <linux/gpio.h> #include <linux/gpio/consumer.h> -#include <linux/of_gpio.h> #include <sound/tlv.h> #include "max98927.h"