This converts the Cirrus CS4271 ASoC codec driver to use GPIO descriptors.
It turns out that there are two in-kernel users of the platform data passing mechanism so these are switched over as well.
One locally defined GPIO "gpio_disabled" is declared in the state struct but completely unused in the driver, so we delete it.
Reviewed-by: Alexander Sverdlin alexander.sverdlin@gmail.com Acked-by: Charles Keepax ckeepax@opensource.cirrus.com Signed-off-by: Linus Walleij linus.walleij@linaro.org --- NB: the affected platform EP93xx is being converted to device tree I don't know if that is happening in this merge window, but the colission should be manageable. --- arch/arm/mach-ep93xx/edb93xx.c | 32 +++++++++++++++++++++++++---- arch/arm/mach-ep93xx/vision_ep9307.c | 12 ++++++++++- include/sound/cs4271.h | 1 - sound/soc/codecs/cs4271.c | 39 ++++++++++++------------------------ 4 files changed, 52 insertions(+), 32 deletions(-)
diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c index 4b90899a66e9..dbdb822a0100 100644 --- a/arch/arm/mach-ep93xx/edb93xx.c +++ b/arch/arm/mach-ep93xx/edb93xx.c @@ -88,7 +88,7 @@ static void __init edb93xx_register_i2c(void) * EDB93xx SPI peripheral handling *************************************************************************/ static struct cs4271_platform_data edb93xx_cs4271_data = { - .gpio_nreset = -EINVAL, /* filled in later */ + /* Intentionally left blank */ };
static struct spi_board_info edb93xx_spi_board_info[] __initdata = { @@ -114,14 +114,38 @@ static struct ep93xx_spi_info edb93xx_spi_info __initdata = { /* Intentionally left blank */ };
+static struct gpiod_lookup_table edb93xx_cs4272_edb9301_gpio_table = { + .dev_id = "spi0.0", /* CS0 on SPI0 */ + .table = { + GPIO_LOOKUP("A", 1, "reset", GPIO_ACTIVE_LOW), + { }, + }, +}; + +static struct gpiod_lookup_table edb93xx_cs4272_edb9302_gpio_table = { + .dev_id = "spi0.0", /* CS0 on SPI0 */ + .table = { + GPIO_LOOKUP("H", 2, "reset", GPIO_ACTIVE_LOW), + { }, + }, +}; + +static struct gpiod_lookup_table edb93xx_cs4272_edb9315_gpio_table = { + .dev_id = "spi0.0", /* CS0 on SPI0 */ + .table = { + GPIO_LOOKUP("B", 6, "reset", GPIO_ACTIVE_LOW), + { }, + }, +}; + static void __init edb93xx_register_spi(void) { if (machine_is_edb9301() || machine_is_edb9302()) - edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; + gpiod_add_lookup_table(&edb93xx_cs4272_edb9301_gpio_table); else if (machine_is_edb9302a() || machine_is_edb9307a()) - edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); + gpiod_add_lookup_table(&edb93xx_cs4272_edb9302_gpio_table); else if (machine_is_edb9315a()) - edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; + gpiod_add_lookup_table(&edb93xx_cs4272_edb9315_gpio_table);
gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table); ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c index 30d9cf3791eb..9471938df64c 100644 --- a/arch/arm/mach-ep93xx/vision_ep9307.c +++ b/arch/arm/mach-ep93xx/vision_ep9307.c @@ -164,7 +164,7 @@ static struct i2c_board_info vision_i2c_info[] __initdata = { * SPI CS4271 Audio Codec *************************************************************************/ static struct cs4271_platform_data vision_cs4271_data = { - .gpio_nreset = EP93XX_GPIO_LINE_H(2), + /* Intentionally left blank */ };
/************************************************************************* @@ -241,6 +241,15 @@ static struct spi_board_info vision_spi_board_info[] __initdata = { }, };
+static struct gpiod_lookup_table vision_spi_cs4271_gpio_table = { + .dev_id = "spi0.0", /* cs4271 @ CS0 */ + .table = { + /* RESET */ + GPIO_LOOKUP_IDX("H", 2, NULL, 0, GPIO_ACTIVE_LOW), + { }, + }, +}; + static struct gpiod_lookup_table vision_spi_cs_gpio_table = { .dev_id = "spi0", .table = { @@ -292,6 +301,7 @@ static void __init vision_init_machine(void)
ep93xx_register_i2c(vision_i2c_info, ARRAY_SIZE(vision_i2c_info)); + gpiod_add_lookup_table(&vision_spi_cs4271_gpio_table); gpiod_add_lookup_table(&vision_spi_mmc_gpio_table); gpiod_add_lookup_table(&vision_spi_cs_gpio_table); ep93xx_register_spi(&vision_spi_master, vision_spi_board_info, diff --git a/include/sound/cs4271.h b/include/sound/cs4271.h index 6ff23ab48894..5a55d135bdea 100644 --- a/include/sound/cs4271.h +++ b/include/sound/cs4271.h @@ -9,7 +9,6 @@ #define __CS4271_H
struct cs4271_platform_data { - int gpio_nreset; /* GPIO driving Reset pin, if any */ bool amutec_eq_bmutec; /* flag to enable AMUTEC=BMUTEC */
/* diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c index 9e6f8a048dd5..74a84832d958 100644 --- a/sound/soc/codecs/cs4271.c +++ b/sound/soc/codecs/cs4271.c @@ -13,9 +13,8 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/delay.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/regulator/consumer.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -160,9 +159,7 @@ struct cs4271_private { /* Current sample rate for de-emphasis control */ int rate; /* GPIO driving Reset pin, if any */ - int gpio_nreset; - /* GPIO that disable serial bus, if any */ - int gpio_disable; + struct gpio_desc *reset; /* enable soft reset workaround */ bool enable_soft_reset; struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; @@ -487,12 +484,10 @@ static int cs4271_reset(struct snd_soc_component *component) { struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
- if (gpio_is_valid(cs4271->gpio_nreset)) { - gpio_direction_output(cs4271->gpio_nreset, 0); - mdelay(1); - gpio_set_value(cs4271->gpio_nreset, 1); - mdelay(1); - } + gpiod_direction_output(cs4271->reset, 1); + mdelay(1); + gpiod_set_value(cs4271->reset, 0); + mdelay(1);
return 0; } @@ -612,9 +607,8 @@ static void cs4271_component_remove(struct snd_soc_component *component) { struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
- if (gpio_is_valid(cs4271->gpio_nreset)) - /* Set codec to the reset state */ - gpio_set_value(cs4271->gpio_nreset, 0); + /* Set codec to the reset state */ + gpiod_set_value(cs4271->reset, 1);
regcache_mark_dirty(cs4271->regmap); regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies); @@ -639,7 +633,6 @@ static const struct snd_soc_component_driver soc_component_dev_cs4271 = { static int cs4271_common_probe(struct device *dev, struct cs4271_private **c) { - struct cs4271_platform_data *cs4271plat = dev->platform_data; struct cs4271_private *cs4271; int i, ret;
@@ -647,17 +640,11 @@ static int cs4271_common_probe(struct device *dev, if (!cs4271) return -ENOMEM;
- cs4271->gpio_nreset = of_get_named_gpio(dev->of_node, "reset-gpio", 0); - - if (cs4271plat) - cs4271->gpio_nreset = cs4271plat->gpio_nreset; - - if (gpio_is_valid(cs4271->gpio_nreset)) { - ret = devm_gpio_request(dev, cs4271->gpio_nreset, - "CS4271 Reset"); - if (ret < 0) - return ret; - } + cs4271->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_ASIS); + if (IS_ERR(cs4271->reset)) + return dev_err_probe(dev, PTR_ERR(cs4271->reset), + "error retrieveing RESET GPIO\n"); + gpiod_set_consumer_name(cs4271->reset, "CS4271 Reset");
for (i = 0; i < ARRAY_SIZE(supply_names); i++) cs4271->supplies[i].supply = supply_names[i];