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Commit 531f67e4 authored by Bo Shen's avatar Bo Shen Committed by Mark Brown
Browse files

ASoC: at91sam9g20ek-wm8731: convert to dt support 



convert at91sam9g20ek with wm8731 to device tree support

Signed-off-by: default avatarBo Shen <voice.shen@atmel.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 3310b57d

Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt

0 → 100644
+26 −0
Original line number Diff line number Diff line 
* Atmel at91sam9g20ek wm8731 audio complex



Required properties:

  - compatible: "atmel,at91sam9g20ek-wm8731-audio"

  - atmel,model: The user-visible name of this sound complex.

  - atmel,audio-routing: A list of the connections between audio components.

  - atmel,ssc-controller: The phandle of the SSC controller

  - atmel,audio-codec: The phandle of the WM8731 audio codec

Optional properties:

  - pinctrl-names, pinctrl-0: Please refer to pinctrl-bindings.txt



Example:

sound {

	compatible = "atmel,at91sam9g20ek-wm8731-audio";

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_pck0_as_mck>;



	atmel,model = "wm8731 @ AT91SAMG20EK";



	atmel,audio-routing =

		"Ext Spk", "LHPOUT",

		"Int MIC", "MICIN";



	atmel,ssc-controller = <&ssc0>;

	atmel,audio-codec = <&wm8731>;

};

arch/arm/boot/dts/at91sam9g20ek_common.dtsi

+31 −1
Original line number Diff line number Diff line
@@ -30,6 +30,16 @@ 


	ahb {

		apb {

			pinctrl@fffff400 {

				board {

					pinctrl_pck0_as_mck: pck0_as_mck {

						atmel,pins =

							<2 1 0x2 0x0>;	/* PC1 periph B */

					};



				};

			};



			dbgu: serial@fffff200 {

				status = "okay";

			};
@@ -51,6 +61,11 @@ 
				atmel,vbus-gpio = <&pioC 5 0>;

				status = "okay";

			};



			ssc0: ssc@fffbc000 {

				status = "okay";

				pinctrl-0 = <&pinctrl_ssc0_tx>;

			};

		};



		nand0: nand@40000000 {
@@ -114,7 +129,7 @@ 
			reg = <0x50>;

		};



		wm8731@1b {

		wm8731: wm8731@1b {

			compatible = "wm8731";

			reg = <0x1b>;

		};
@@ -139,4 +154,19 @@ 
			gpio-key,wakeup;

		};

	};



	sound {

		compatible = "atmel,at91sam9g20ek-wm8731-audio";

		pinctrl-names = "default";

		pinctrl-0 = <&pinctrl_pck0_as_mck>;



		atmel,model = "wm8731 @ AT91SAMG20EK";



		atmel,audio-routing =

			"Ext Spk", "LHPOUT",

			"Int Mic", "MICIN";



		atmel,ssc-controller = <&ssc0>;

		atmel,audio-codec = <&wm8731>;

	};

};

sound/soc/atmel/Kconfig

+1 −2
Original line number Diff line number Diff line
@@ -16,8 +16,7 @@ config SND_ATMEL_SOC_SSC 


config SND_AT91_SOC_SAM9G20_WM8731

	tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board"

	depends on ATMEL_SSC && ARCH_AT91SAM9G20 && SND_ATMEL_SOC && \

                   AT91_PROGRAMMABLE_CLOCKS

	depends on ATMEL_SSC && SND_ATMEL_SOC && AT91_PROGRAMMABLE_CLOCKS

	select SND_ATMEL_SOC_SSC

	select SND_SOC_WM8731

	help

sound/soc/atmel/sam9g20_wm8731.c

+61 −2
Original line number Diff line number Diff line
@@ -38,6 +38,8 @@ 
#include <linux/platform_device.h>

#include <linux/i2c.h>



#include <linux/pinctrl/consumer.h>



#include <linux/atmel-ssc.h>



#include <sound/core.h>
@@ -197,12 +199,24 @@ static struct snd_soc_card snd_soc_at91sam9g20ek = { 


static int __devinit at91sam9g20ek_audio_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	struct device_node *codec_np, *cpu_np;

	struct clk *pllb;

	struct snd_soc_card *card = &snd_soc_at91sam9g20ek;

	struct pinctrl *pinctrl;

	int ret;



	if (!(machine_is_at91sam9g20ek() || machine_is_at91sam9g20ek_2mmc()))

	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);

	if (IS_ERR(pinctrl)) {

		dev_err(&pdev->dev, "Failed to request pinctrl for mck\n");

		return PTR_ERR(pinctrl);

	}



	if (!np) {

		if (!(machine_is_at91sam9g20ek() ||

			machine_is_at91sam9g20ek_2mmc()))

			return -ENODEV;

	}



	ret = atmel_ssc_set_audio(0);

	if (ret) {
@@ -236,6 +250,42 @@ static int __devinit at91sam9g20ek_audio_probe(struct platform_device *pdev) 
	clk_set_rate(mclk, MCLK_RATE);



	card->dev = &pdev->dev;



	/* Parse device node info */

	if (np) {

		ret = snd_soc_of_parse_card_name(card, "atmel,model");

		if (ret)

			goto err;



		ret = snd_soc_of_parse_audio_routing(card,

			"atmel,audio-routing");

		if (ret)

			goto err;



		/* Parse codec info */

		at91sam9g20ek_dai.codec_name = NULL;

		codec_np = of_parse_phandle(np, "atmel,audio-codec", 0);

		if (!codec_np) {

			dev_err(&pdev->dev, "codec info missing\n");

			return -EINVAL;

		}

		at91sam9g20ek_dai.codec_of_node = codec_np;



		/* Parse dai and platform info */

		at91sam9g20ek_dai.cpu_dai_name = NULL;

		at91sam9g20ek_dai.platform_name = NULL;

		cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0);

		if (!cpu_np) {

			dev_err(&pdev->dev, "dai and pcm info missing\n");

			return -EINVAL;

		}

		at91sam9g20ek_dai.cpu_of_node = cpu_np;

		at91sam9g20ek_dai.platform_of_node = cpu_np;



		of_node_put(codec_np);

		of_node_put(cpu_np);

	}



	ret = snd_soc_register_card(card);

	if (ret) {

		printk(KERN_ERR "ASoC: snd_soc_register_card() failed\n");
@@ -263,10 +313,19 @@ static int __devexit at91sam9g20ek_audio_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id at91sam9g20ek_wm8731_dt_ids[] = {

	{ .compatible = "atmel,at91sam9g20ek-wm8731-audio", },

	{ }

};

MODULE_DEVICE_TABLE(of, at91sam9g20ek_wm8731_dt_ids);

#endif



static struct platform_driver at91sam9g20ek_audio_driver = {

	.driver = {

		.name	= "at91sam9g20ek-audio",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids),

	},

	.probe	= at91sam9g20ek_audio_probe,

	.remove	= __devexit_p(at91sam9g20ek_audio_remove),