[02/10] ASoC: samsung/smartq: use dynamic registration
diff mbox

Message ID 1448467615-447097-3-git-send-email-arnd@arndb.de
State New, archived
Headers show

Commit Message

Arnd Bergmann Nov. 25, 2015, 4:06 p.m. UTC
As a prerequisite for moving s3c64xx into multiplatform configurations,
we need to change the smartq audio driver to stop using hardcoded
gpio numbers from the header file, and instead pass the gpio data
through platform_data.

In order to do that, we also move the code to use module_platform_driver
and register the platform device using platform_device_register_simple
and register the gpios through the gpiod API.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@kernel.org>
---
 arch/arm/mach-s3c64xx/mach-smartq.c | 13 +++++++
 sound/soc/samsung/smartq_wm8987.c   | 77 +++++++++++++------------------------
 2 files changed, 40 insertions(+), 50 deletions(-)

Comments

Krzysztof Kozlowski Dec. 1, 2015, 12:24 a.m. UTC | #1
On 26.11.2015 01:06, Arnd Bergmann wrote:
> As a prerequisite for moving s3c64xx into multiplatform configurations,
> we need to change the smartq audio driver to stop using hardcoded
> gpio numbers from the header file, and instead pass the gpio data
> through platform_data.
> 
> In order to do that, we also move the code to use module_platform_driver
> and register the platform device using platform_device_register_simple
> and register the gpios through the gpiod API.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Acked-by: Mark Brown <broonie@kernel.org>
> ---
>  arch/arm/mach-s3c64xx/mach-smartq.c | 13 +++++++
>  sound/soc/samsung/smartq_wm8987.c   | 77 +++++++++++++------------------------
>  2 files changed, 40 insertions(+), 50 deletions(-)
> 
> diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c
> index acdfb5fac40f..96784e7f894a 100644
> --- a/arch/arm/mach-s3c64xx/mach-smartq.c
> +++ b/arch/arm/mach-s3c64xx/mach-smartq.c
> @@ -12,6 +12,7 @@
>  #include <linux/delay.h>
>  #include <linux/fb.h>
>  #include <linux/gpio.h>
> +#include <linux/gpio/machine.h>
>  #include <linux/init.h>
>  #include <linux/platform_device.h>
>  #include <linux/pwm.h>
> @@ -383,6 +384,15 @@ void __init smartq_map_io(void)
>  	smartq_lcd_mode_set();
>  }
>  
> +static struct gpiod_lookup_table smartq_audio_gpios = {
> +	.dev_id = "smartq-audio",
> +	.table = {
> +		GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
> +		GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
> +		{ },
> +	},
> +};
> +
>  void __init smartq_machine_init(void)
>  {
>  	s3c_i2c0_set_platdata(NULL);
> @@ -402,4 +412,7 @@ void __init smartq_machine_init(void)
>  
>  	pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
>  	platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
> +
> +	gpiod_add_lookup_table(&smartq_audio_gpios);
> +	platform_device_register_simple("smartq-audio", -1, NULL, 0);
>  }
> diff --git a/sound/soc/samsung/smartq_wm8987.c b/sound/soc/samsung/smartq_wm8987.c
> index a0fe37fbed9f..c6769b16eb19 100644
> --- a/sound/soc/samsung/smartq_wm8987.c
> +++ b/sound/soc/samsung/smartq_wm8987.c
> @@ -13,15 +13,12 @@
>   *
>   */
>  
> -#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 <asm/mach-types.h>
> -
>  #include "i2s.h"
>  #include "../codecs/wm8750.h"
>  
> @@ -96,7 +93,7 @@ static struct snd_soc_jack_pin smartq_jack_pins[] = {
>  
>  static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
>  	{
> -		.gpio		= S3C64XX_GPL(12),
> +		.gpio		= -1,
>  		.name		= "headphone detect",
>  		.report		= SND_JACK_HEADPHONE,
>  		.debounce_time	= 200,
> @@ -113,7 +110,9 @@ static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
>  				struct snd_kcontrol *k,
>  				int event)
>  {
> -	gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
> +	struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq);
> +
> +	gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event));
>  
>  	return 0;
>  }
> @@ -199,62 +198,40 @@ static struct snd_soc_card snd_soc_smartq = {
>  	.num_controls = ARRAY_SIZE(wm8987_smartq_controls),
>  };
>  
> -static struct platform_device *smartq_snd_device;
> -
> -static int __init smartq_init(void)
> +static int smartq_probe(struct platform_device *pdev)
>  {
> +	struct gpio_desc *gpio;
>  	int ret;
>  
> -	if (!machine_is_smartq7() && !machine_is_smartq5()) {
> -		pr_info("Only SmartQ is supported by this ASoC driver\n");
> -		return -ENODEV;
> -	}
> -
> -	smartq_snd_device = platform_device_alloc("soc-audio", -1);
> -	if (!smartq_snd_device)
> -		return -ENOMEM;
> -
> -	platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
> -
> -	ret = platform_device_add(smartq_snd_device);
> -	if (ret) {
> -		platform_device_put(smartq_snd_device);
> -		return ret;
> -	}
> +	platform_set_drvdata(pdev, &snd_soc_smartq);
>  
>  	/* Initialise GPIOs used by amplifiers */
> -	ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
> -	if (ret) {
> -		dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
> -		goto err_unregister_device;
> +	gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown",
> +			      GPIOD_OUT_HIGH);
> +	if (IS_ERR(gpio)) {
> +		dev_err(&pdev->dev, "Failed to register GPK12\n");
> +		ret = PTR_ERR(gpio);
> +		goto out;
>  	}
> +	snd_soc_card_set_drvdata(&snd_soc_smartq, gpio);
>  
> -	/* Disable amplifiers */
> -	ret = gpio_direction_output(S3C64XX_GPK(12), 1);
> -	if (ret) {
> -		dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
> -		goto err_free_gpio_amp_shut;
> -	}
> -
> -	return 0;
> -
> -err_free_gpio_amp_shut:
> -	gpio_free(S3C64XX_GPK(12));
> -err_unregister_device:
> -	platform_device_unregister(smartq_snd_device);
> +	ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq);
> +	if (ret)
> +		dev_err(&pdev->dev, "Failed to register card\n");
>  
> +out:
>  	return ret;
>  }
>  
> -static void __exit smartq_exit(void)
> -{
> -	gpio_free(S3C64XX_GPK(12));
> -
> -	platform_device_unregister(smartq_snd_device);
> -}
> +static struct platform_driver smartq_driver = {
> +	.driver = {
> +		.name = "smartq-audio",
> +		.owner = THIS_MODULE,

The owner should not be needed (coccicheck should also complain). Rest
looks good, so:

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Best regards,
Krzysztof

--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Arnd Bergmann Dec. 1, 2015, 3:11 p.m. UTC | #2
On Tuesday 01 December 2015 09:24:24 Krzysztof Kozlowski wrote:
> > +static struct platform_driver smartq_driver = {
> > +     .driver = {
> > +             .name = "smartq-audio",
> > +             .owner = THIS_MODULE,
> 
> The owner should not be needed (coccicheck should also complain). Rest
> looks good, so:

Good catch, fixed now!
 
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

thanks,

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch
diff mbox

diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c
index acdfb5fac40f..96784e7f894a 100644
--- a/arch/arm/mach-s3c64xx/mach-smartq.c
+++ b/arch/arm/mach-s3c64xx/mach-smartq.c
@@ -12,6 +12,7 @@ 
 #include <linux/delay.h>
 #include <linux/fb.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/pwm.h>
@@ -383,6 +384,15 @@  void __init smartq_map_io(void)
 	smartq_lcd_mode_set();
 }
 
+static struct gpiod_lookup_table smartq_audio_gpios = {
+	.dev_id = "smartq-audio",
+	.table = {
+		GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
+		GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
+		{ },
+	},
+};
+
 void __init smartq_machine_init(void)
 {
 	s3c_i2c0_set_platdata(NULL);
@@ -402,4 +412,7 @@  void __init smartq_machine_init(void)
 
 	pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 	platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
+
+	gpiod_add_lookup_table(&smartq_audio_gpios);
+	platform_device_register_simple("smartq-audio", -1, NULL, 0);
 }
diff --git a/sound/soc/samsung/smartq_wm8987.c b/sound/soc/samsung/smartq_wm8987.c
index a0fe37fbed9f..c6769b16eb19 100644
--- a/sound/soc/samsung/smartq_wm8987.c
+++ b/sound/soc/samsung/smartq_wm8987.c
@@ -13,15 +13,12 @@ 
  *
  */
 
-#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 <asm/mach-types.h>
-
 #include "i2s.h"
 #include "../codecs/wm8750.h"
 
@@ -96,7 +93,7 @@  static struct snd_soc_jack_pin smartq_jack_pins[] = {
 
 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
 	{
-		.gpio		= S3C64XX_GPL(12),
+		.gpio		= -1,
 		.name		= "headphone detect",
 		.report		= SND_JACK_HEADPHONE,
 		.debounce_time	= 200,
@@ -113,7 +110,9 @@  static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
 				struct snd_kcontrol *k,
 				int event)
 {
-	gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
+	struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq);
+
+	gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event));
 
 	return 0;
 }
@@ -199,62 +198,40 @@  static struct snd_soc_card snd_soc_smartq = {
 	.num_controls = ARRAY_SIZE(wm8987_smartq_controls),
 };
 
-static struct platform_device *smartq_snd_device;
-
-static int __init smartq_init(void)
+static int smartq_probe(struct platform_device *pdev)
 {
+	struct gpio_desc *gpio;
 	int ret;
 
-	if (!machine_is_smartq7() && !machine_is_smartq5()) {
-		pr_info("Only SmartQ is supported by this ASoC driver\n");
-		return -ENODEV;
-	}
-
-	smartq_snd_device = platform_device_alloc("soc-audio", -1);
-	if (!smartq_snd_device)
-		return -ENOMEM;
-
-	platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
-
-	ret = platform_device_add(smartq_snd_device);
-	if (ret) {
-		platform_device_put(smartq_snd_device);
-		return ret;
-	}
+	platform_set_drvdata(pdev, &snd_soc_smartq);
 
 	/* Initialise GPIOs used by amplifiers */
-	ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
-	if (ret) {
-		dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
-		goto err_unregister_device;
+	gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown",
+			      GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio)) {
+		dev_err(&pdev->dev, "Failed to register GPK12\n");
+		ret = PTR_ERR(gpio);
+		goto out;
 	}
+	snd_soc_card_set_drvdata(&snd_soc_smartq, gpio);
 
-	/* Disable amplifiers */
-	ret = gpio_direction_output(S3C64XX_GPK(12), 1);
-	if (ret) {
-		dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
-		goto err_free_gpio_amp_shut;
-	}
-
-	return 0;
-
-err_free_gpio_amp_shut:
-	gpio_free(S3C64XX_GPK(12));
-err_unregister_device:
-	platform_device_unregister(smartq_snd_device);
+	ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq);
+	if (ret)
+		dev_err(&pdev->dev, "Failed to register card\n");
 
+out:
 	return ret;
 }
 
-static void __exit smartq_exit(void)
-{
-	gpio_free(S3C64XX_GPK(12));
-
-	platform_device_unregister(smartq_snd_device);
-}
+static struct platform_driver smartq_driver = {
+	.driver = {
+		.name = "smartq-audio",
+		.owner = THIS_MODULE,
+	},
+	.probe = smartq_probe,
+};
 
-module_init(smartq_init);
-module_exit(smartq_exit);
+module_platform_driver(smartq_driver);
 
 /* Module information */
 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");