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Commit 90e8e50f authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
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ASoC: rsnd: add DeviceTree support 



Support for loading the Renesas R-Car sound driver via DeviceTree.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent ba9c949f

Documentation/devicetree/bindings/sound/renesas,rsnd.txt

0 → 100644
+96 −0
Original line number Diff line number Diff line 
Renesas R-Car sound



Required properties:

- compatible			: "renesas,rcar_sound-gen1" if generation1

				  "renesas,rcar_sound-gen2" if generation2

- reg				: Should contain the register physical address.

				  required register is

				   SRU/ADG/SSI      if generation1

				   SRU/ADG/SSIU/SSI if generation2

- rcar_sound,ssi		: SSI subnode

- rcar_sound,scu		: SCU subnode

- rcar_sound,dai		: DAI subnode



SSI subnode properties:

- interrupts			: Should contain SSI interrupt for PIO transfer

- shared-pin			: if shared clock pin



DAI subnode properties:

- playback			: list of playback modules

- capture			: list of capture  modules



Example:



rcar_sound: rcar_sound@0xffd90000 {

	#sound-dai-cells = <1>;

	compatible = "renesas,rcar_sound-gen2";

	reg =	<0 0xec500000 0 0x1000>, /* SCU */

		<0 0xec5a0000 0 0x100>,  /* ADG */

		<0 0xec540000 0 0x1000>, /* SSIU */

		<0 0xec541000 0 0x1280>; /* SSI */



	rcar_sound,src {

		src0: src@0 { };

		src1: src@1 { };

		src2: src@2 { };

		src3: src@3 { };

		src4: src@4 { };

		src5: src@5 { };

		src6: src@6 { };

		src7: src@7 { };

		src8: src@8 { };

		src9: src@9 { };

	};



	rcar_sound,ssi {

		ssi0: ssi@0 {

			interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi1: ssi@1 {

			interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi2: ssi@2 {

			interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi3: ssi@3 {

			interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi4: ssi@4 {

			interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi5: ssi@5 {

			interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi6: ssi@6 {

			interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi7: ssi@7 {

			interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi8: ssi@8 {

			interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;

		};

		ssi9: ssi@9 {

			interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;

		};

	};



	rcar_sound,dai {

		dai0 {

			playback = <&ssi5 &src5>;

			capture  = <&ssi6>;

		};

		dai1 {

			playback = <&ssi3>;

		};

		dai2 {

			capture  = <&ssi4>;

		};

		dai3 {

			playback = <&ssi7>;

		};

		dai4 {

			capture  = <&ssi8>;

		};

	};

};

sound/soc/sh/rcar/adg.c

+1 −0
Original line number Diff line number Diff line
@@ -392,6 +392,7 @@ static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg) 
}



int rsnd_adg_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv)

{

	struct rsnd_adg *adg;

sound/soc/sh/rcar/core.c

+119 −3
Original line number Diff line number Diff line
@@ -100,6 +100,21 @@ 
#define RSND_RATES SNDRV_PCM_RATE_8000_96000

#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)



static struct rsnd_of_data rsnd_of_data_gen1 = {

	.flags = RSND_GEN1,

};



static struct rsnd_of_data rsnd_of_data_gen2 = {

	.flags = RSND_GEN2,

};



static struct of_device_id rsnd_of_match[] = {

	{ .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },

	{ .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },

	{},

};

MODULE_DEVICE_TABLE(of, rsnd_of_match);



/*

 *	rsnd_platform functions

 */
@@ -620,7 +635,92 @@ static int rsnd_path_init(struct rsnd_priv *priv, 
	return ret;

}



static void rsnd_of_parse_dai(struct platform_device *pdev,

			      const struct rsnd_of_data *of_data,

			      struct rsnd_priv *priv)

{

	struct device_node *dai_node,	*dai_np;

	struct device_node *ssi_node,	*ssi_np;

	struct device_node *src_node,	*src_np;

	struct device_node *playback, *capture;

	struct rsnd_dai_platform_info *dai_info;

	struct rcar_snd_info *info = rsnd_priv_to_info(priv);

	struct device *dev = &pdev->dev;

	int nr, i;

	int dai_i, ssi_i, src_i;



	if (!of_data)

		return;



	dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");

	if (!dai_node)

		return;



	nr = of_get_child_count(dai_node);

	if (!nr)

		return;



	dai_info = devm_kzalloc(dev,

				sizeof(struct rsnd_dai_platform_info) * nr,

				GFP_KERNEL);

	if (!dai_info) {

		dev_err(dev, "dai info allocation error\n");

		return;

	}



	info->dai_info_nr	= nr;

	info->dai_info		= dai_info;



	ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");

	src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");



#define mod_parse(name)							\

if (name##_node) {							\

	struct rsnd_##name##_platform_info *name##_info;		\

									\

	name##_i = 0;							\

	for_each_child_of_node(name##_node, name##_np) {		\

		name##_info = info->name##_info + name##_i;		\

									\

		if (name##_np == playback)				\

			dai_info->playback.name = name##_info;		\

		if (name##_np == capture)				\

			dai_info->capture.name = name##_info;		\

									\

		name##_i++;						\

	}								\

}



	/*

	 * parse all dai

	 */

	dai_i = 0;

	for_each_child_of_node(dai_node, dai_np) {

		dai_info = info->dai_info + dai_i;



		for (i = 0;; i++) {



			playback = of_parse_phandle(dai_np, "playback", i);

			capture  = of_parse_phandle(dai_np, "capture", i);



			if (!playback && !capture)

				break;



			mod_parse(ssi);

			mod_parse(src);



			if (playback)

				of_node_put(playback);

			if (capture)

				of_node_put(capture);

		}



		dai_i++;

	}

}



static int rsnd_dai_probe(struct platform_device *pdev,

			  const struct rsnd_of_data *of_data,

			  struct rsnd_priv *priv)

{

	struct snd_soc_dai_driver *drv;
@@ -628,13 +728,16 @@ static int rsnd_dai_probe(struct platform_device *pdev, 
	struct rsnd_dai *rdai;

	struct rsnd_mod *pmod, *cmod;

	struct device *dev = rsnd_priv_to_dev(priv);

	int dai_nr = info->dai_info_nr;

	int dai_nr;

	int i;



	rsnd_of_parse_dai(pdev, of_data, priv);



	/*

	 * dai_nr should be set via dai_info_nr,

	 * but allow it to keeping compatible

	 */

	dai_nr = info->dai_info_nr;

	if (!dai_nr) {

		/* get max dai nr */

		for (dai_nr = 0; dai_nr < 32; dai_nr++) {
@@ -802,7 +905,10 @@ static int rsnd_probe(struct platform_device *pdev) 
	struct rsnd_priv *priv;

	struct device *dev = &pdev->dev;

	struct rsnd_dai *rdai;

	const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);

	const struct rsnd_of_data *of_data;

	int (*probe_func[])(struct platform_device *pdev,

			    const struct rsnd_of_data *of_data,

			    struct rsnd_priv *priv) = {

		rsnd_gen_probe,

		rsnd_ssi_probe,
@@ -812,7 +918,16 @@ static int rsnd_probe(struct platform_device *pdev) 
	};

	int ret, i;



	info = NULL;

	of_data = NULL;

	if (of_id) {

		info = devm_kzalloc(&pdev->dev,

				    sizeof(struct rcar_snd_info), GFP_KERNEL);

		of_data = of_id->data;

	} else {

		info = pdev->dev.platform_data;

	}



	if (!info) {

		dev_err(dev, "driver needs R-Car sound information\n");

		return -ENODEV;
@@ -835,7 +950,7 @@ static int rsnd_probe(struct platform_device *pdev) 
	 *	init each module

	 */

	for (i = 0; i < ARRAY_SIZE(probe_func); i++) {

		ret = probe_func[i](pdev, priv);

		ret = probe_func[i](pdev, of_data, priv);

		if (ret)

			return ret;

	}
@@ -903,6 +1018,7 @@ static int rsnd_remove(struct platform_device *pdev) 
static struct platform_driver rsnd_driver = {

	.driver	= {

		.name	= "rcar_sound",

		.of_match_table = rsnd_of_match,

	},

	.probe		= rsnd_probe,

	.remove		= rsnd_remove,

sound/soc/sh/rcar/gen.c

+15 −0
Original line number Diff line number Diff line
@@ -359,13 +359,28 @@ static int rsnd_gen1_probe(struct platform_device *pdev, 
/*

 *		Gen

 */

static void rsnd_of_parse_gen(struct platform_device *pdev,

			      const struct rsnd_of_data *of_data,

			      struct rsnd_priv *priv)

{

	struct rcar_snd_info *info = priv->info;



	if (!of_data)

		return;



	info->flags = of_data->flags;

}



int rsnd_gen_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv)

{

	struct device *dev = rsnd_priv_to_dev(priv);

	struct rsnd_gen *gen;

	int ret;



	rsnd_of_parse_gen(pdev, of_data, priv);



	gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);

	if (!gen) {

		dev_err(dev, "GEN allocate failed\n");

sound/soc/sh/rcar/rsnd.h

+11 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
#include <linux/io.h>

#include <linux/list.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/of_irq.h>

#include <linux/sh_dma.h>

#include <linux/workqueue.h>

#include <sound/rcar_snd.h>
@@ -113,6 +115,7 @@ enum rsnd_reg { 
#define RSND_REG_SRCOUT_TIMSEL4		RSND_REG_SHARE18

#define RSND_REG_AUDIO_CLK_SEL2		RSND_REG_SHARE19



struct rsnd_of_data;

struct rsnd_priv;

struct rsnd_mod;

struct rsnd_dai;
@@ -260,6 +263,7 @@ int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); 
 *	R-Car Gen1/Gen2

 */

int rsnd_gen_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv);

void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,

			       struct rsnd_mod *mod,
@@ -273,6 +277,7 @@ void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, 
int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod);

int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate);

int rsnd_adg_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv);

int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv,

				  struct rsnd_mod *mod,
@@ -290,6 +295,10 @@ int rsnd_adg_set_convert_timing_gen2(struct rsnd_mod *mod, 
/*

 *	R-Car sound priv

 */

struct rsnd_of_data {

	u32 flags;

};



struct rsnd_priv {



	struct device *dev;
@@ -348,6 +357,7 @@ struct rsnd_priv { 
 *	R-Car SRC

 */

int rsnd_src_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv);

struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id);

unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
@@ -366,6 +376,7 @@ int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod, 
 *	R-Car SSI

 */

int rsnd_ssi_probe(struct platform_device *pdev,

		   const struct rsnd_of_data *of_data,

		   struct rsnd_priv *priv);

struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id);

struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv,