[PATCH 17/36] ARM: s3c: h1940-audio: turn into platform driver

Arnd Bergmann
2019-10-10T20:44:28Z

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>
---
arch/arm/mach-s3c24xx/mach-h1940.c | 18 ++++++++
sound/soc/samsung/h1940_uda1380.c | 71 ++++++++++--------------------
2 files changed, 41 insertions(+), 48 deletions(-)

diff --git a/arch/arm/mach-s3c24xx/mach-h1940.c b/arch/arm/mach-s3c24xx/mach-h1940.c
index 74d6b68e91c7..922d53bacbdf 100644
--- a/arch/arm/mach-s3c24xx/mach-h1940.c
+++ b/arch/arm/mach-s3c24xx/mach-h1940.c
@@ -475,6 +475,22 @@ static struct gpiod_lookup_table h1940_mmc_gpio_table = {
},
};

+static struct gpiod_lookup_table h1940_audio_gpio_table = {
+ .dev_id = "h1940-audio",
+ .table = {
+ GPIO_LOOKUP("H1940_LATCH",
+ H1940_LATCH_AUDIO_POWER - H1940_LATCH_GPIO(0),
+ "speaker-power", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("GPIOG", 4, "hp", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
+static struct platform_device h1940_audio = {
+ .name = "h1940-audio",
+ .id = -1,
+};
+
static struct pwm_lookup h1940_pwm_lookup[] = {
PWM_LOOKUP("samsung-pwm", 0, "pwm-backlight", NULL, 36296,
PWM_POLARITY_NORMAL),
@@ -652,6 +668,7 @@ static struct platform_device *h1940_devices[] __initdata = {
&s3c_device_ts,
&power_supply,
&h1940_battery,
+ &h1940_audio,
};

static void __init h1940_map_io(void)
@@ -691,6 +708,7 @@ static void __init h1940_init(void)

s3c24xx_fb_set_platdata(&h1940_fb_info);
gpiod_add_lookup_table(&h1940_mmc_gpio_table);
+ gpiod_add_lookup_table(&h1940_audio_gpio_table);
s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
s3c24xx_udc_set_platdata(&h1940_udc_cfg);
s3c24xx_ts_set_platdata(&h1940_ts_cfg);
diff --git a/sound/soc/samsung/h1940_uda1380.c b/sound/soc/samsung/h1940_uda1380.c
index a95c34e53a2b..5fc001b4effd 100644
--- a/sound/soc/samsung/h1940_uda1380.c
+++ b/sound/soc/samsung/h1940_uda1380.c
@@ -15,9 +15,6 @@
#include <sound/jack.h>

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

static const unsigned int rates[] = {
@@ -31,6 +28,8 @@ static const struct snd_pcm_hw_constraint_list hw_rates = {
.list = rates,
};

+static struct gpio_desc *gpiod_speaker_power;
+
static struct snd_soc_jack hp_jack;

static struct snd_soc_jack_pin hp_jack_pins[] = {
@@ -47,7 +46,6 @@ static struct snd_soc_jack_pin hp_jack_pins[] = {

static struct snd_soc_jack_gpio hp_jack_gpios[] = {
{
- .gpio = S3C2410_GPG(4),
.name = "hp-gpio",
.report = SND_JACK_HEADPHONE,
.invert = 1,
@@ -123,9 +121,9 @@ static int h1940_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event))
- gpio_set_value(S3C_GPIO_END + 9, 1);
+ gpiod_set_value(gpiod_speaker_power, 1);
else
- gpio_set_value(S3C_GPIO_END + 9, 0);
+ gpiod_set_value(gpiod_speaker_power, 0);

return 0;
}
@@ -151,8 +149,6 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"VINM", NULL, "Mic Jack"},
};

-static struct platform_device *s3c24xx_snd_device;
-
static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
{
snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
@@ -194,55 +190,34 @@ static struct snd_soc_card h1940_asoc = {
.num_dapm_routes = ARRAY_SIZE(audio_map),
};

-static int __init h1940_init(void)
+static int h1940_probe(struct platform_device *pdev)
{
- int ret;
+ struct device *dev = &pdev->dev;

- if (!machine_is_h1940())
- return -ENODEV;
+ h1940_asoc.dev = dev;
+ hp_jack_gpios[0].gpiod_dev = dev;
+ gpiod_speaker_power = devm_gpiod_get(&pdev->dev, "speaker-power",
+ GPIOD_OUT_LOW);

- /* configure some gpios */
- ret = gpio_request(S3C_GPIO_END + 9, "speaker-power");
- if (ret)
- goto err_out;
-
- ret = gpio_direction_output(S3C_GPIO_END + 9, 0);
- if (ret)
- goto err_gpio;
-
- s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
- if (!s3c24xx_snd_device) {
- ret = -ENOMEM;
- goto err_gpio;
+ if (IS_ERR(gpiod_speaker_power)) {
+ dev_err(dev, "Could not get gpio\n");
+ return PTR_ERR(gpiod_speaker_power);
}

- platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc);
- ret = platform_device_add(s3c24xx_snd_device);
-
- if (ret)
- goto err_plat;
-
- return 0;
-
-err_plat:
- platform_device_put(s3c24xx_snd_device);
-err_gpio:
- gpio_free(S3C_GPIO_END + 9);
-
-err_out:
- return ret;
-}
-
-static void __exit h1940_exit(void)
-{
- platform_device_unregister(s3c24xx_snd_device);
- gpio_free(S3C_GPIO_END + 9);
+ return devm_snd_soc_register_card(dev, &h1940_asoc);
}

-module_init(h1940_init);
-module_exit(h1940_exit);
+static struct platform_driver h1940_audio_driver = {
+ .driver = {
+ .name = "h1940-audio",
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = h1940_probe,
+};
+module_platform_driver(h1940_audio_driver);

/* Module information */
MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
MODULE_DESCRIPTION("ALSA SoC H1940");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:h1940-audio");
--
2.20.0