ASoC: pxa: Convert e740_wm9705 to use snd_soc_register_card()
Axel Lin [Thu, 15 Dec 2011 02:52:42 +0000 (10:52 +0800)]
Use snd_soc_register_card() instead of creating a "soc-audio" platform device.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

arch/arm/mach-pxa/eseries.c
sound/soc/pxa/e740_wm9705.c

index d82b7aa..d157ca9 100644 (file)
@@ -525,12 +525,18 @@ static struct platform_device e740_t7l66xb_device = {
        .resource      = eseries_tmio_resources,
 };
 
+static struct platform_device e740_audio_device = {
+       .name           = "e740-audio",
+       .id             = -1,
+};
+
 /* ----------------------------------------------------------------------- */
 
 static struct platform_device *e740_devices[] __initdata = {
        &e740_fb_device,
        &e740_t7l66xb_device,
        &e7xx_gpio_vbus,
+       &e740_audio_device,
 };
 
 static void __init e740_init(void)
index 818dc57..203ab78 100644 (file)
@@ -137,66 +137,55 @@ static struct snd_soc_card e740 = {
        .num_links = ARRAY_SIZE(e740_dai),
 };
 
-static struct platform_device *e740_snd_device;
+static struct gpio e740_audio_gpios[] = {
+       { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
+       { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
+       { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
+};
 
-static int __init e740_init(void)
+static int __devinit e740_probe(struct platform_device *pdev)
 {
+       struct snd_soc_card *card = &e740;
        int ret;
 
-       if (!machine_is_e740())
-               return -ENODEV;
-
-       /* Disable audio */
-       ret = gpio_request_one(GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp");
+       ret = gpio_request_array(e740_audio_gpios,
+                                ARRAY_SIZE(e740_audio_gpios));
        if (ret)
                return ret;
 
-       ret = gpio_request_one(GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW,
-                              "Output amp");
-       if (ret)
-               goto free_mic_amp_gpio;
+       card->dev = &pdev->dev;
 
-       ret = gpio_request_one(GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH,
-                          "Audio power");
-       if (ret)
-               goto free_op_amp_gpio;
-
-       e740_snd_device = platform_device_alloc("soc-audio", -1);
-       if (!e740_snd_device) {
-               ret = -ENOMEM;
-               goto free_apwr_gpio;
+       ret = snd_soc_register_card(card);
+       if (ret) {
+               dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+                       ret);
+               gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
        }
-
-       platform_set_drvdata(e740_snd_device, &e740);
-       ret = platform_device_add(e740_snd_device);
-
-       if (!ret)
-               return 0;
-
-/* Fail gracefully */
-       platform_device_put(e740_snd_device);
-free_apwr_gpio:
-       gpio_free(GPIO_E740_WM9705_nAVDD2);
-free_op_amp_gpio:
-       gpio_free(GPIO_E740_AMP_ON);
-free_mic_amp_gpio:
-       gpio_free(GPIO_E740_MIC_ON);
-
        return ret;
 }
 
-static void __exit e740_exit(void)
+static int __devexit e740_remove(struct platform_device *pdev)
 {
-       platform_device_unregister(e740_snd_device);
-       gpio_free(GPIO_E740_WM9705_nAVDD2);
-       gpio_free(GPIO_E740_AMP_ON);
-       gpio_free(GPIO_E740_MIC_ON);
+       struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+       gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
+       snd_soc_unregister_card(card);
+       return 0;
 }
 
-module_init(e740_init);
-module_exit(e740_exit);
+static struct platform_driver e740_driver = {
+       .driver         = {
+               .name   = "e740-audio",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = e740_probe,
+       .remove         = __devexit_p(e740_remove),
+};
+
+module_platform_driver(e740_driver);
 
 /* Module information */
 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:e740-audio");