From 40476f61897933d524b7069a6df65629a469d922 Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Fri, 18 Jan 2013 17:17:01 +0530 Subject: ASoC: samsung: Add DT support for i2s Add support for device based discovery. Signed-off-by: Padmavathi Venna Signed-off-by: Mark Brown --- .../devicetree/bindings/sound/samsung-i2s.txt | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/samsung-i2s.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt new file mode 100644 index 000000000000..3070046da2e5 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt @@ -0,0 +1,63 @@ +* Samsung I2S controller + +Required SoC Specific Properties: + +- compatible : "samsung,i2s-v5" +- reg: physical base address of the controller and length of memory mapped + region. +- dmas: list of DMA controller phandle and DMA request line ordered pairs. +- dma-names: identifier string for each DMA request line in the dmas property. + These strings correspond 1:1 with the ordered pairs in dmas. + +Optional SoC Specific Properties: + +- samsung,supports-6ch: If the I2S Primary sound source has 5.1 Channel + support, this flag is enabled. +- samsung,supports-rstclr: This flag should be set if I2S software reset bit + control is required. When this flag is set I2S software reset bit will be + enabled or disabled based on need. +- samsung,supports-secdai:If I2S block has a secondary FIFO and internal DMA, + then this flag is enabled. +- samsung,idma-addr: Internal DMA register base address of the audio + sub system(used in secondary sound source). + +Required Board Specific Properties: + +- gpios: The gpio specifier for data out,data in, LRCLK, CDCLK and SCLK + interface lines. The format of the gpio specifier depends on the gpio + controller. + The syntax of samsung gpio specifier is + <[phandle of the gpio controller node] + [pin number within the gpio controller] + [mux function] + [flags and pull up/down] + [drive strength]> + +Example: + +- SoC Specific Portion: + +i2s@03830000 { + compatible = "samsung,i2s-v5"; + reg = <0x03830000 0x100>; + dmas = <&pdma0 10 + &pdma0 9 + &pdma0 8>; + dma-names = "tx", "rx", "tx-sec"; + samsung,supports-6ch; + samsung,supports-rstclr; + samsung,supports-secdai; + samsung,idma-addr = <0x03000000>; +}; + +- Board Specific Portion: + +i2s@03830000 { + gpios = <&gpz 0 2 0 0>, /* I2S_0_SCLK */ + <&gpz 1 2 0 0>, /* I2S_0_CDCLK */ + <&gpz 2 2 0 0>, /* I2S_0_LRCK */ + <&gpz 3 2 0 0>, /* I2S_0_SDI */ + <&gpz 4 2 0 0>, /* I2S_0_SDO[1] */ + <&gpz 5 2 0 0>, /* I2S_0_SDO[2] */ + <&gpz 6 2 0 0>; /* I2S_0_SDO[3] */ +}; -- cgit v1.2.3 From 28a480583361b8e67b0a7f4898180725b71cceec Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Fri, 18 Jan 2013 17:17:06 +0530 Subject: ASoC: SMDK: WM8994: Add device tree support for machine file Add the basic device tree based lookup. Signed-off-by: Padmavathi Venna Signed-off-by: Mark Brown --- .../bindings/sound/samsung,smdk-wm8994.txt | 14 ++++++++++++ arch/arm/boot/dts/exynos5250-smdk5250.dts | 18 ++++++++++++--- arch/arm/boot/dts/exynos5250.dtsi | 6 ++--- sound/soc/samsung/smdk_wm8994.c | 26 ++++++++++++++++++++++ 4 files changed, 58 insertions(+), 6 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt b/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt new file mode 100644 index 000000000000..4686646fb122 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt @@ -0,0 +1,14 @@ +Samsung SMDK audio complex + +Required properties: +- compatible : "samsung,smdk-wm8994" +- samsung,i2s-controller: The phandle of the Samsung I2S0 controller +- samsung,audio-codec: The phandle of the WM8994 audio codec +Example: + +sound { + compatible = "samsung,smdk-wm8994"; + + samsung,i2s-controller = <&i2s0>; + samsung,audio-codec = <&wm8994>; +}; diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts index 78fee35d09fc..127b8cd1385c 100644 --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts @@ -49,6 +49,11 @@ compatible = "samsung,s524ad0xd1"; reg = <0x51>; }; + + wm8994: wm8994@1a { + compatible = "wlf,wm8994"; + reg = <0x1a>; + }; }; i2c@121D0000 { @@ -205,17 +210,24 @@ samsung,mfc-l = <0x51000000 0x800000>; }; - i2s@03830000 { + i2s0: i2s@03830000 { gpios = <&gpz 0 2 0 0>, <&gpz 1 2 0 0>, <&gpz 2 2 0 0>, <&gpz 3 2 0 0>, <&gpz 4 2 0 0>, <&gpz 5 2 0 0>, <&gpz 6 2 0 0>; }; - i2s@12D60000 { + i2s1: i2s@12D60000 { status = "disabled"; }; - i2s@12D70000 { + i2s2: i2s@12D70000 { status = "disabled"; }; + + sound { + compatible = "samsung,smdk-wm8994"; + + samsung,i2s-controller = <&i2s0>; + samsung,audio-codec = <&wm8994>; + }; }; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index fe05b60a3984..a320b4ac11dd 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -269,7 +269,7 @@ #size-cells = <0>; }; - i2s@03830000 { + i2s0: i2s@03830000 { compatible = "samsung,i2s-v5"; reg = <0x03830000 0x100>; dmas = <&pdma0 10 @@ -282,7 +282,7 @@ samsung,idma-addr = <0x03000000>; }; - i2s@12D60000 { + i2s1: i2s@12D60000 { compatible = "samsung,i2s-v5"; reg = <0x12D60000 0x100>; dmas = <&pdma1 12 @@ -290,7 +290,7 @@ dma-names = "tx", "rx"; }; - i2s@12D70000 { + i2s2: i2s@12D70000 { compatible = "samsung,i2s-v5"; reg = <0x12D70000 0x100>; dmas = <&pdma0 12 diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c index cc2f407e9f1b..581ea4a06fc6 100644 --- a/sound/soc/samsung/smdk_wm8994.c +++ b/sound/soc/samsung/smdk_wm8994.c @@ -10,6 +10,7 @@ #include "../codecs/wm8994.h" #include #include +#include /* * Default CFG switch settings to use this driver: @@ -153,9 +154,25 @@ static struct snd_soc_card smdk = { static int smdk_audio_probe(struct platform_device *pdev) { int ret; + struct device_node *np = pdev->dev.of_node; struct snd_soc_card *card = &smdk; card->dev = &pdev->dev; + + if (np) { + smdk_dai[0].cpu_dai_name = NULL; + smdk_dai[0].cpu_of_node = of_parse_phandle(np, + "samsung,i2s-controller", 0); + if (!smdk_dai[0].cpu_of_node) { + dev_err(&pdev->dev, + "Property 'samsung,i2s-controller' missing or invalid\n"); + ret = -EINVAL; + } + + smdk_dai[0].platform_name = NULL; + smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node; + } + ret = snd_soc_register_card(card); if (ret) @@ -173,10 +190,19 @@ static int smdk_audio_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id samsung_wm8994_of_match[] = { + { .compatible = "samsung,smdk-wm8994", }, + {}, +}; +MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); +#endif /* CONFIG_OF */ + static struct platform_driver smdk_audio_driver = { .driver = { .name = "smdk-audio", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(samsung_wm8994_of_match), }, .probe = smdk_audio_probe, .remove = smdk_audio_remove, -- cgit v1.2.3