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

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
* 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>;
};
......@@ -30,6 +30,16 @@ main_clock: clock@0 {
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 @@ usb1: gadget@fffa4000 {
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 @@ i2c@0 {
reg = <0x50>;
};
wm8731@1b {
wm8731: wm8731@1b {
compatible = "wm8731";
reg = <0x1b>;
};
......@@ -139,4 +154,19 @@ btn4 {
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>;
};
};
......@@ -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
......
......@@ -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()))
return -ENODEV;
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),
......
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