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ASoC: cs4271: Convert to GPIO descriptors 

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>
Link: https://lore.kernel.org/r/20231201-descriptors-sound-cirrus-v2-6-ee9f9d4655eb@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2023-12-01 14:20:35 +01:00 committed by Mark Brown
parent 194ef700d4
commit 42d1178d22
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
4 changed files with 52 additions and 32 deletions
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32
arch/arm/mach-ep93xx/edb93xx.c
View File

@ -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,

12
arch/arm/mach-ep93xx/vision_ep9307.c
View File

@ -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,

1
include/sound/cs4271.h
View File

@ -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 */
/*

39
sound/soc/codecs/cs4271.c
View File

@ -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];