ASoC: samsung: rx1950: turn into platform driver

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>
Link: https://lore.kernel.org/r/20200806182059.2431-26-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 23 insertions, 49 deletions

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");