[PATCH v2 26/41] ASoC: samsung: rx1950: turn into platform driver

Krzysztof Kozlowski
2020-08-06T18:37:15Z

Avoid machine specific headers by using a gpio lookup table
combined with a platform_driver for this board.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
arch/arm/mach-s3c24xx/mach-rx1950.c | 16 +++++++
sound/soc/samsung/rx1950_uda1380.c | 72 +++++++++--------------------
2 files changed, 39 insertions(+), 49 deletions(-)

diff --git a/arch/arm/mach-s3c24xx/mach-rx1950.c b/arch/arm/mach-s3c24xx/mach-rx1950.c
index 65440c39500e..a5461b2227bd 100644
--- a/arch/arm/mach-s3c24xx/mach-rx1950.c
+++ b/arch/arm/mach-s3c24xx/mach-rx1950.c
@@ -727,6 +727,20 @@ static struct i2c_board_info rx1950_i2c_devices[] = {
},
};

+static struct gpiod_lookup_table rx1950_audio_gpio_table = {
+ .dev_id = "rx1950-audio",
+ .table = {
+ GPIO_LOOKUP("GPIOG", 12, "hp-gpio", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("GPIOA", 1, "speaker-power", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
+static struct platform_device rx1950_audio = {
+ .name = "rx1950-audio",
+ .id = -1,
+};
+
static struct platform_device *rx1950_devices[] __initdata = {
&s3c2410_device_dclk,
&s3c_device_lcd,
@@ -745,6 +759,7 @@ static struct platform_device *rx1950_devices[] __initdata = {
&power_supply,
&rx1950_battery,
&rx1950_leds,
+ &rx1950_audio,
};

static void __init rx1950_map_io(void)
@@ -812,6 +827,7 @@ static void __init rx1950_init_machine(void)
gpio_direction_output(S3C2410_GPJ(6), 0);

pwm_add_table(rx1950_pwm_lookup, ARRAY_SIZE(rx1950_pwm_lookup));
+ gpiod_add_lookup_table(&rx1950_audio_gpio_table);
platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));

i2c_register_board_info(0, rx1950_i2c_devices,
diff --git a/sound/soc/samsung/rx1950_uda1380.c b/sound/soc/samsung/rx1950_uda1380.c
index 08f7c82aedb6..400a7f77c711 100644
--- a/sound/soc/samsung/rx1950_uda1380.c
+++ b/sound/soc/samsung/rx1950_uda1380.c
@@ -12,16 +12,13 @@
// Vasily Khoruzhick <anarsoul@gmail.com>

#include <linux/types.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/module.h>

#include <sound/soc.h>
#include <sound/jack.h>

-#include <mach/gpio-samsung.h>
#include "regs-iis.h"
-#include <asm/mach-types.h>
-
#include "s3c24xx-i2s.h"

static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
@@ -58,7 +55,6 @@ static struct snd_soc_jack_pin hp_jack_pins[] = {

static struct snd_soc_jack_gpio hp_jack_gpios[] = {
[0] = {
- .gpio = S3C2410_GPG(12),
.name = "hp-gpio",
.report = SND_JACK_HEADPHONE,
.invert = 1,
@@ -123,8 +119,6 @@ static struct snd_soc_card rx1950_asoc = {
.num_dapm_routes = ARRAY_SIZE(audio_map),
};

-static struct platform_device *s3c24xx_snd_device;
-
static int rx1950_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -134,13 +128,15 @@ static int rx1950_startup(struct snd_pcm_substream *substream)
&hw_rates);
}

+struct gpio_desc *gpiod_speaker_power;
+
static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event))
- gpio_set_value(S3C2410_GPA(1), 1);
+ gpiod_set_value(gpiod_speaker_power, 1);
else
- gpio_set_value(S3C2410_GPA(1), 0);
+ gpiod_set_value(gpiod_speaker_power, 0);

return 0;
}
@@ -214,57 +210,35 @@ static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
return 0;
}

-static int __init rx1950_init(void)
+static int rx1950_probe(struct platform_device *pdev)
{
- int ret;
-
- if (!machine_is_rx1950())
- return -ENODEV;
+ struct device *dev = &pdev->dev;

/* configure some gpios */
- ret = gpio_request(S3C2410_GPA(1), "speaker-power");
- if (ret)
- goto err_gpio;
-
- ret = gpio_direction_output(S3C2410_GPA(1), 0);
- if (ret)
- goto err_gpio_conf;
-
- s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
- if (!s3c24xx_snd_device) {
- ret = -ENOMEM;
- goto err_plat_alloc;
- }
-
- platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
- ret = platform_device_add(s3c24xx_snd_device);
-
- if (ret) {
- platform_device_put(s3c24xx_snd_device);
- goto err_plat_add;
+ gpiod_speaker_power = devm_gpiod_get(dev, "speaker-power", GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod_speaker_power)) {
+ dev_err(dev, "cannot get gpio\n");
+ return PTR_ERR(gpiod_speaker_power);
}

- return 0;
-
-err_plat_add:
-err_plat_alloc:
-err_gpio_conf:
- gpio_free(S3C2410_GPA(1));
+ hp_jack_gpios[0].gpiod_dev = dev;
+ rx1950_asoc.dev = dev;

-err_gpio:
- return ret;
+ return devm_snd_soc_register_card(dev, &rx1950_asoc);
}

-static void __exit rx1950_exit(void)
-{
- platform_device_unregister(s3c24xx_snd_device);
- gpio_free(S3C2410_GPA(1));
-}
+struct platform_driver rx1950_audio = {
+ .driver = {
+ .name = "rx1950-audio",
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = rx1950_probe,
+};

-module_init(rx1950_init);
-module_exit(rx1950_exit);
+module_platform_driver(rx1950_audio);

/* Module information */
MODULE_AUTHOR("Vasily Khoruzhick");
MODULE_DESCRIPTION("ALSA SoC RX1950");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:rx1950-audio");
--
2.17.1