[linux-block.git] / sound / soc / pxa / mmp-sspa.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * linux/sound/soc/pxa/mmp-sspa.c
 * Base on pxa2xx-ssp.c
 *
 * Copyright (C) 2011 Marvell International Ltd.
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/pxa2xx_ssp.h>
#include <linux/io.h>
#include <linux/dmaengine.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/pxa2xx-lib.h>
#include <sound/dmaengine_pcm.h>
#include "mmp-sspa.h"

/*
 * SSPA audio private data
 */
struct sspa_priv {
	struct ssp_device *sspa;
	struct snd_dmaengine_dai_dma_data *dma_params;
	struct clk *audio_clk;
	struct clk *sysclk;
	int dai_fmt;
	int running_cnt;
};

static void mmp_sspa_write_reg(struct ssp_device *sspa, u32 reg, u32 val)
{
	__raw_writel(val, sspa->mmio_base + reg);
}

static u32 mmp_sspa_read_reg(struct ssp_device *sspa, u32 reg)
{
	return __raw_readl(sspa->mmio_base + reg);
}

static void mmp_sspa_tx_enable(struct ssp_device *sspa)
{
	unsigned int sspa_sp;

	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_TXSP);
	sspa_sp |= SSPA_SP_S_EN;
	sspa_sp |= SSPA_SP_WEN;
	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
}

static void mmp_sspa_tx_disable(struct ssp_device *sspa)
{
	unsigned int sspa_sp;

	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_TXSP);
	sspa_sp &= ~SSPA_SP_S_EN;
	sspa_sp |= SSPA_SP_WEN;
	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
}

static void mmp_sspa_rx_enable(struct ssp_device *sspa)
{
	unsigned int sspa_sp;

	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_RXSP);
	sspa_sp |= SSPA_SP_S_EN;
	sspa_sp |= SSPA_SP_WEN;
	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
}

static void mmp_sspa_rx_disable(struct ssp_device *sspa)
{
	unsigned int sspa_sp;

	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_RXSP);
	sspa_sp &= ~SSPA_SP_S_EN;
	sspa_sp |= SSPA_SP_WEN;
	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
}

static int mmp_sspa_startup(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
{
	struct sspa_priv *priv = snd_soc_dai_get_drvdata(dai);

	clk_enable(priv->sysclk);
	clk_enable(priv->sspa->clk);

	return 0;
}

static void mmp_sspa_shutdown(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
{
	struct sspa_priv *priv = snd_soc_dai_get_drvdata(dai);

	clk_disable(priv->sspa->clk);
	clk_disable(priv->sysclk);

}

/*
 * Set the SSP ports SYSCLK.
 */
static int mmp_sspa_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
				    int clk_id, unsigned int freq, int dir)
{
	struct sspa_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
	int ret = 0;

	switch (clk_id) {
	case MMP_SSPA_CLK_AUDIO:
		ret = clk_set_rate(priv->audio_clk, freq);
		if (ret)
			return ret;
		break;
	case MMP_SSPA_CLK_PLL:
	case MMP_SSPA_CLK_VCXO:
		/* not support yet */
		return -EINVAL;
	default:
		return -EINVAL;
	}

	return 0;
}

static int mmp_sspa_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
				 int source, unsigned int freq_in,
				 unsigned int freq_out)
{
	struct sspa_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
	int ret = 0;

	switch (pll_id) {
	case MMP_SYSCLK:
		ret = clk_set_rate(priv->sysclk, freq_out);
		if (ret)
			return ret;
		break;
	case MMP_SSPA_CLK:
		ret = clk_set_rate(priv->sspa->clk, freq_out);
		if (ret)
			return ret;
		break;
	default:
		return -ENODEV;
	}

	return 0;
}

/*
 * Set up the sspa dai format. The sspa port must be inactive
 * before calling this function as the physical
 * interface format is changed.
 */
static int mmp_sspa_set_dai_fmt(struct snd_soc_dai *cpu_dai,
				 unsigned int fmt)
{
	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(cpu_dai);
	struct ssp_device *sspa = sspa_priv->sspa;
	u32 sspa_sp, sspa_ctrl;

	/* check if we need to change anything at all */
	if (sspa_priv->dai_fmt == fmt)
		return 0;

	/* we can only change the settings if the port is not in use */
	if ((mmp_sspa_read_reg(sspa, SSPA_TXSP) & SSPA_SP_S_EN) ||
	    (mmp_sspa_read_reg(sspa, SSPA_RXSP) & SSPA_SP_S_EN)) {
		dev_err(&sspa->pdev->dev,
			"can't change hardware dai format: stream is in use\n");
		return -EINVAL;
	}

	/* reset port settings */
	sspa_sp   = SSPA_SP_WEN | SSPA_SP_S_RST | SSPA_SP_FFLUSH;
	sspa_ctrl = 0;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
		sspa_sp |= SSPA_SP_MSL;
		break;
	case SND_SOC_DAIFMT_CBM_CFM:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		sspa_sp |= SSPA_SP_FSP;
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		sspa_sp |= SSPA_TXSP_FPER(63);
		sspa_sp |= SSPA_SP_FWID(31);
		sspa_ctrl |= SSPA_CTL_XDATDLY(1);
		break;
	default:
		return -EINVAL;
	}

	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);

	sspa_sp &= ~(SSPA_SP_S_RST | SSPA_SP_FFLUSH);
	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);

	/*
	 * FIXME: hw issue, for the tx serial port,
	 * can not config the master/slave mode;
	 * so must clean this bit.
	 * The master/slave mode has been set in the
	 * rx port.
	 */
	sspa_sp &= ~SSPA_SP_MSL;
	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);

	mmp_sspa_write_reg(sspa, SSPA_TXCTL, sspa_ctrl);
	mmp_sspa_write_reg(sspa, SSPA_RXCTL, sspa_ctrl);

	/* Since we are configuring the timings for the format by hand
	 * we have to defer some things until hw_params() where we
	 * know parameters like the sample size.
	 */
	sspa_priv->dai_fmt = fmt;
	return 0;
}

/*
 * Set the SSPA audio DMA parameters and sample size.
 * Can be called multiple times by oss emulation.
 */
static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
			       struct snd_pcm_hw_params *params,
			       struct snd_soc_dai *dai)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
	struct ssp_device *sspa = sspa_priv->sspa;
	struct snd_dmaengine_dai_dma_data *dma_params;
	u32 sspa_ctrl;

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		sspa_ctrl = mmp_sspa_read_reg(sspa, SSPA_TXCTL);
	else
		sspa_ctrl = mmp_sspa_read_reg(sspa, SSPA_RXCTL);

	sspa_ctrl &= ~SSPA_CTL_XFRLEN1_MASK;
	sspa_ctrl |= SSPA_CTL_XFRLEN1(params_channels(params) - 1);
	sspa_ctrl &= ~SSPA_CTL_XWDLEN1_MASK;
	sspa_ctrl |= SSPA_CTL_XWDLEN1(SSPA_CTL_32_BITS);
	sspa_ctrl &= ~SSPA_CTL_XSSZ1_MASK;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		sspa_ctrl |= SSPA_CTL_XSSZ1(SSPA_CTL_8_BITS);
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		sspa_ctrl |= SSPA_CTL_XSSZ1(SSPA_CTL_16_BITS);
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		sspa_ctrl |= SSPA_CTL_XSSZ1(SSPA_CTL_20_BITS);
		break;
	case SNDRV_PCM_FORMAT_S24_3LE:
		sspa_ctrl |= SSPA_CTL_XSSZ1(SSPA_CTL_24_BITS);
		break;
	case SNDRV_PCM_FORMAT_S32_LE:
		sspa_ctrl |= SSPA_CTL_XSSZ1(SSPA_CTL_32_BITS);
		break;
	default:
		return -EINVAL;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		mmp_sspa_write_reg(sspa, SSPA_TXCTL, sspa_ctrl);
		mmp_sspa_write_reg(sspa, SSPA_TXFIFO_LL, 0x1);
	} else {
		mmp_sspa_write_reg(sspa, SSPA_RXCTL, sspa_ctrl);
		mmp_sspa_write_reg(sspa, SSPA_RXFIFO_UL, 0x0);
	}

	dma_params = &sspa_priv->dma_params[substream->stream];
	dma_params->addr = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
				(sspa->phys_base + SSPA_TXD) :
				(sspa->phys_base + SSPA_RXD);
	snd_soc_dai_set_dma_data(cpu_dai, substream, dma_params);
	return 0;
}

static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
			     struct snd_soc_dai *dai)
{
	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
	struct ssp_device *sspa = sspa_priv->sspa;
	int ret = 0;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		/*
		 * whatever playback or capture, must enable rx.
		 * this is a hw issue, so need check if rx has been
		 * enabled or not; if has been enabled by another
		 * stream, do not enable again.
		 */
		if (!sspa_priv->running_cnt)
			mmp_sspa_rx_enable(sspa);

		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
			mmp_sspa_tx_enable(sspa);

		sspa_priv->running_cnt++;
		break;

	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		sspa_priv->running_cnt--;

		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
			mmp_sspa_tx_disable(sspa);

		/* have no capture stream, disable rx port */
		if (!sspa_priv->running_cnt)
			mmp_sspa_rx_disable(sspa);
		break;

	default:
		ret = -EINVAL;
	}

	return ret;
}

static int mmp_sspa_probe(struct snd_soc_dai *dai)
{
	struct sspa_priv *priv = dev_get_drvdata(dai->dev);

	snd_soc_dai_set_drvdata(dai, priv);
	return 0;

}

#define MMP_SSPA_RATES SNDRV_PCM_RATE_8000_192000
#define MMP_SSPA_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
		SNDRV_PCM_FMTBIT_S16_LE | \
		SNDRV_PCM_FMTBIT_S24_LE | \
		SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dai_ops mmp_sspa_dai_ops = {
	.startup	= mmp_sspa_startup,
	.shutdown	= mmp_sspa_shutdown,
	.trigger	= mmp_sspa_trigger,
	.hw_params	= mmp_sspa_hw_params,
	.set_sysclk	= mmp_sspa_set_dai_sysclk,
	.set_pll	= mmp_sspa_set_dai_pll,
	.set_fmt	= mmp_sspa_set_dai_fmt,
};

static struct snd_soc_dai_driver mmp_sspa_dai = {
	.probe = mmp_sspa_probe,
	.playback = {
		.channels_min = 1,
		.channels_max = 128,
		.rates = MMP_SSPA_RATES,
		.formats = MMP_SSPA_FORMATS,
	},
	.capture = {
		.channels_min = 1,
		.channels_max = 2,
		.rates = MMP_SSPA_RATES,
		.formats = MMP_SSPA_FORMATS,
	},
	.ops = &mmp_sspa_dai_ops,
};

static const struct snd_soc_component_driver mmp_sspa_component = {
	.name		= "mmp-sspa",
};

static int asoc_mmp_sspa_probe(struct platform_device *pdev)
{
	struct sspa_priv *priv;
	struct resource *res;

	priv = devm_kzalloc(&pdev->dev,
				sizeof(struct sspa_priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->sspa = devm_kzalloc(&pdev->dev,
				sizeof(struct ssp_device), GFP_KERNEL);
	if (priv->sspa == NULL)
		return -ENOMEM;

	priv->dma_params = devm_kcalloc(&pdev->dev,
			2, sizeof(struct snd_dmaengine_dai_dma_data),
			GFP_KERNEL);
	if (priv->dma_params == NULL)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	priv->sspa->mmio_base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(priv->sspa->mmio_base))
		return PTR_ERR(priv->sspa->mmio_base);

	priv->sspa->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(priv->sspa->clk))
		return PTR_ERR(priv->sspa->clk);

	priv->audio_clk = clk_get(NULL, "mmp-audio");
	if (IS_ERR(priv->audio_clk))
		return PTR_ERR(priv->audio_clk);

	priv->sysclk = clk_get(NULL, "mmp-sysclk");
	if (IS_ERR(priv->sysclk)) {
		clk_put(priv->audio_clk);
		return PTR_ERR(priv->sysclk);
	}
	clk_enable(priv->audio_clk);
	priv->dai_fmt = (unsigned int) -1;
	platform_set_drvdata(pdev, priv);

	return devm_snd_soc_register_component(&pdev->dev, &mmp_sspa_component,
					       &mmp_sspa_dai, 1);
}

static int asoc_mmp_sspa_remove(struct platform_device *pdev)
{
	struct sspa_priv *priv = platform_get_drvdata(pdev);

	clk_disable(priv->audio_clk);
	clk_put(priv->audio_clk);
	clk_put(priv->sysclk);
	return 0;
}

static struct platform_driver asoc_mmp_sspa_driver = {
	.driver = {
		.name = "mmp-sspa-dai",
	},
	.probe = asoc_mmp_sspa_probe,
	.remove = asoc_mmp_sspa_remove,
};

module_platform_driver(asoc_mmp_sspa_driver);

MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
MODULE_DESCRIPTION("MMP SSPA SoC Interface");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mmp-sspa-dai");
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
fa375d42 ZG	2	/*
	3	* linux/sound/soc/pxa/mmp-sspa.c
	4	* Base on pxa2xx-ssp.c
	5	*
	6	* Copyright (C) 2011 Marvell International Ltd.
fa375d42 ZG	7	*/
	8	#include <linux/init.h>
	9	#include <linux/module.h>
	10	#include <linux/platform_device.h>
	11	#include <linux/delay.h>
	12	#include <linux/clk.h>
	13	#include <linux/slab.h>
	14	#include <linux/pxa2xx_ssp.h>
	15	#include <linux/io.h>
d65a1458 DM	16	#include <linux/dmaengine.h>
d65a1458 DM	17
fa375d42 ZG	18	#include <sound/core.h>
	19	#include <sound/pcm.h>
	20	#include <sound/initval.h>
	21	#include <sound/pcm_params.h>
	22	#include <sound/soc.h>
	23	#include <sound/pxa2xx-lib.h>
d65a1458	24	#include <sound/dmaengine_pcm.h>
fa375d42 ZG	25	#include "mmp-sspa.h"
	26
	27	/*
	28	* SSPA audio private data
	29	*/
	30	struct sspa_priv {
	31	struct ssp_device *sspa;
d65a1458	32	struct snd_dmaengine_dai_dma_data *dma_params;
fa375d42 ZG	33	struct clk *audio_clk;
	34	struct clk *sysclk;
	35	int dai_fmt;
	36	int running_cnt;
	37	};
	38
	39	static void mmp_sspa_write_reg(struct ssp_device *sspa, u32 reg, u32 val)
	40	{
	41	__raw_writel(val, sspa->mmio_base + reg);
	42	}
	43
	44	static u32 mmp_sspa_read_reg(struct ssp_device *sspa, u32 reg)
	45	{
	46	return __raw_readl(sspa->mmio_base + reg);
	47	}
	48
	49	static void mmp_sspa_tx_enable(struct ssp_device *sspa)
	50	{
	51	unsigned int sspa_sp;
	52
	53	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_TXSP);
	54	sspa_sp \|= SSPA_SP_S_EN;
	55	sspa_sp \|= SSPA_SP_WEN;
	56	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
	57	}
	58
	59	static void mmp_sspa_tx_disable(struct ssp_device *sspa)
	60	{
	61	unsigned int sspa_sp;
	62
	63	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_TXSP);
	64	sspa_sp &= ~SSPA_SP_S_EN;
	65	sspa_sp \|= SSPA_SP_WEN;
	66	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
	67	}
	68
	69	static void mmp_sspa_rx_enable(struct ssp_device *sspa)
	70	{
	71	unsigned int sspa_sp;
	72
	73	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_RXSP);
	74	sspa_sp \|= SSPA_SP_S_EN;
	75	sspa_sp \|= SSPA_SP_WEN;
	76	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
	77	}
	78
	79	static void mmp_sspa_rx_disable(struct ssp_device *sspa)
	80	{
	81	unsigned int sspa_sp;
	82
	83	sspa_sp = mmp_sspa_read_reg(sspa, SSPA_RXSP);
	84	sspa_sp &= ~SSPA_SP_S_EN;
	85	sspa_sp \|= SSPA_SP_WEN;
	86	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
	87	}
	88
	89	static int mmp_sspa_startup(struct snd_pcm_substream *substream,
	90	struct snd_soc_dai *dai)
	91	{
	92	struct sspa_priv *priv = snd_soc_dai_get_drvdata(dai);
	93
	94	clk_enable(priv->sysclk);
	95	clk_enable(priv->sspa->clk);
	96
97	return 0;
98	}
99
100	static void mmp_sspa_shutdown(struct snd_pcm_substream *substream,
101	struct snd_soc_dai *dai)
102	{
103	struct sspa_priv *priv = snd_soc_dai_get_drvdata(dai);
104
105	clk_disable(priv->sspa->clk);
106	clk_disable(priv->sysclk);
107
fa375d42 ZG	108	}
	109
	110	/*
	111	* Set the SSP ports SYSCLK.
	112	*/
	113	static int mmp_sspa_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
	114	int clk_id, unsigned int freq, int dir)
	115	{
	116	struct sspa_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
	117	int ret = 0;
	118
	119	switch (clk_id) {
	120	case MMP_SSPA_CLK_AUDIO:
	121	ret = clk_set_rate(priv->audio_clk, freq);
	122	if (ret)
	123	return ret;
	124	break;
	125	case MMP_SSPA_CLK_PLL:
	126	case MMP_SSPA_CLK_VCXO:
	127	/* not support yet */
	128	return -EINVAL;
	129	default:
	130	return -EINVAL;
	131	}
	132
	133	return 0;
	134	}
	135
	136	static int mmp_sspa_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
	137	int source, unsigned int freq_in,
	138	unsigned int freq_out)
	139	{
	140	struct sspa_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
	141	int ret = 0;
	142
	143	switch (pll_id) {
	144	case MMP_SYSCLK:
	145	ret = clk_set_rate(priv->sysclk, freq_out);
	146	if (ret)
	147	return ret;
	148	break;
	149	case MMP_SSPA_CLK:
	150	ret = clk_set_rate(priv->sspa->clk, freq_out);
	151	if (ret)
	152	return ret;
	153	break;
	154	default:
	155	return -ENODEV;
	156	}
	157
	158	return 0;
	159	}
	160
	161	/*
	162	* Set up the sspa dai format. The sspa port must be inactive
	163	* before calling this function as the physical
	164	* interface format is changed.
	165	*/
	166	static int mmp_sspa_set_dai_fmt(struct snd_soc_dai *cpu_dai,
	167	unsigned int fmt)
	168	{
	169	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(cpu_dai);
	170	struct ssp_device *sspa = sspa_priv->sspa;
	171	u32 sspa_sp, sspa_ctrl;
172
173	/* check if we need to change anything at all */
174	if (sspa_priv->dai_fmt == fmt)
175	return 0;
176
177	/* we can only change the settings if the port is not in use */
178	if ((mmp_sspa_read_reg(sspa, SSPA_TXSP) & SSPA_SP_S_EN) \|\|
179	(mmp_sspa_read_reg(sspa, SSPA_RXSP) & SSPA_SP_S_EN)) {
180	dev_err(&sspa->pdev->dev,
181	"can't change hardware dai format: stream is in use\n");
182	return -EINVAL;
183	}
184
185	/* reset port settings */
186	sspa_sp = SSPA_SP_WEN \| SSPA_SP_S_RST \| SSPA_SP_FFLUSH;
187	sspa_ctrl = 0;
188
189	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
190	case SND_SOC_DAIFMT_CBS_CFS:
191	sspa_sp \|= SSPA_SP_MSL;
192	break;
193	case SND_SOC_DAIFMT_CBM_CFM:
194	break;
195	default:
196	return -EINVAL;
197	}
198
199	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
200	case SND_SOC_DAIFMT_NB_NF:
201	sspa_sp \|= SSPA_SP_FSP;
202	break;
203	default:
204	return -EINVAL;
205	}
206
207	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
208	case SND_SOC_DAIFMT_I2S:
209	sspa_sp \|= SSPA_TXSP_FPER(63);
210	sspa_sp \|= SSPA_SP_FWID(31);
211	sspa_ctrl \|= SSPA_CTL_XDATDLY(1);
212	break;
213	default:
214	return -EINVAL;
215	}
216
217	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
218	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
219
220	sspa_sp &= ~(SSPA_SP_S_RST \| SSPA_SP_FFLUSH);
221	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
222	mmp_sspa_write_reg(sspa, SSPA_RXSP, sspa_sp);
223
224	/*
225	* FIXME: hw issue, for the tx serial port,
226	* can not config the master/slave mode;
227	* so must clean this bit.
228	* The master/slave mode has been set in the
229	* rx port.
230	*/
231	sspa_sp &= ~SSPA_SP_MSL;
232	mmp_sspa_write_reg(sspa, SSPA_TXSP, sspa_sp);
233
234	mmp_sspa_write_reg(sspa, SSPA_TXCTL, sspa_ctrl);
235	mmp_sspa_write_reg(sspa, SSPA_RXCTL, sspa_ctrl);
236
237	/* Since we are configuring the timings for the format by hand
238	* we have to defer some things until hw_params() where we
239	* know parameters like the sample size.
240	*/
241	sspa_priv->dai_fmt = fmt;
242	return 0;
243	}
244
245	/*
246	* Set the SSPA audio DMA parameters and sample size.
247	* Can be called multiple times by oss emulation.
248	*/
249	static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
250	struct snd_pcm_hw_params *params,
251	struct snd_soc_dai *dai)
252	{
253	struct snd_soc_pcm_runtime *rtd = substream->private_data;
254	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
255	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
256	struct ssp_device *sspa = sspa_priv->sspa;
d65a1458	257	struct snd_dmaengine_dai_dma_data *dma_params;
fa375d42 ZG	258	u32 sspa_ctrl;
	259
	260	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	261	sspa_ctrl = mmp_sspa_read_reg(sspa, SSPA_TXCTL);
	262	else
	263	sspa_ctrl = mmp_sspa_read_reg(sspa, SSPA_RXCTL);
	264
	265	sspa_ctrl &= ~SSPA_CTL_XFRLEN1_MASK;
	266	sspa_ctrl \|= SSPA_CTL_XFRLEN1(params_channels(params) - 1);
	267	sspa_ctrl &= ~SSPA_CTL_XWDLEN1_MASK;
	268	sspa_ctrl \|= SSPA_CTL_XWDLEN1(SSPA_CTL_32_BITS);
	269	sspa_ctrl &= ~SSPA_CTL_XSSZ1_MASK;
	270
	271	switch (params_format(params)) {
	272	case SNDRV_PCM_FORMAT_S8:
	273	sspa_ctrl \|= SSPA_CTL_XSSZ1(SSPA_CTL_8_BITS);
	274	break;
	275	case SNDRV_PCM_FORMAT_S16_LE:
	276	sspa_ctrl \|= SSPA_CTL_XSSZ1(SSPA_CTL_16_BITS);
	277	break;
	278	case SNDRV_PCM_FORMAT_S20_3LE:
	279	sspa_ctrl \|= SSPA_CTL_XSSZ1(SSPA_CTL_20_BITS);
	280	break;
	281	case SNDRV_PCM_FORMAT_S24_3LE:
	282	sspa_ctrl \|= SSPA_CTL_XSSZ1(SSPA_CTL_24_BITS);
	283	break;
	284	case SNDRV_PCM_FORMAT_S32_LE:
	285	sspa_ctrl \|= SSPA_CTL_XSSZ1(SSPA_CTL_32_BITS);
	286	break;
	287	default:
	288	return -EINVAL;
	289	}
	290
	291	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	292	mmp_sspa_write_reg(sspa, SSPA_TXCTL, sspa_ctrl);
	293	mmp_sspa_write_reg(sspa, SSPA_TXFIFO_LL, 0x1);
	294	} else {
	295	mmp_sspa_write_reg(sspa, SSPA_RXCTL, sspa_ctrl);
	296	mmp_sspa_write_reg(sspa, SSPA_RXFIFO_UL, 0x0);
	297	}
	298
	299	dma_params = &sspa_priv->dma_params[substream->stream];
d65a1458	300	dma_params->addr = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
fa375d42 ZG	301	(sspa->phys_base + SSPA_TXD) :
	302	(sspa->phys_base + SSPA_RXD);
	303	snd_soc_dai_set_dma_data(cpu_dai, substream, dma_params);
	304	return 0;
	305	}
	306
	307	static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
	308	struct snd_soc_dai *dai)
	309	{
	310	struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
	311	struct ssp_device *sspa = sspa_priv->sspa;
	312	int ret = 0;
	313
	314	switch (cmd) {
	315	case SNDRV_PCM_TRIGGER_START:
	316	case SNDRV_PCM_TRIGGER_RESUME:
	317	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	318	/*
	319	* whatever playback or capture, must enable rx.
	320	* this is a hw issue, so need check if rx has been
	321	* enabled or not; if has been enabled by another
	322	* stream, do not enable again.
	323	*/
	324	if (!sspa_priv->running_cnt)
	325	mmp_sspa_rx_enable(sspa);
	326
	327	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	328	mmp_sspa_tx_enable(sspa);
	329
	330	sspa_priv->running_cnt++;
	331	break;
	332
	333	case SNDRV_PCM_TRIGGER_STOP:
	334	case SNDRV_PCM_TRIGGER_SUSPEND:
	335	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	336	sspa_priv->running_cnt--;
	337
	338	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	339	mmp_sspa_tx_disable(sspa);
	340
	341	/* have no capture stream, disable rx port */
	342	if (!sspa_priv->running_cnt)
	343	mmp_sspa_rx_disable(sspa);
	344	break;
	345
	346	default:
	347	ret = -EINVAL;
	348	}
	349
	350	return ret;
	351	}
	352
	353	static int mmp_sspa_probe(struct snd_soc_dai *dai)
	354	{
	355	struct sspa_priv *priv = dev_get_drvdata(dai->dev);
	356
	357	snd_soc_dai_set_drvdata(dai, priv);
	358	return 0;
	359
	360	}
	361
	362	#define MMP_SSPA_RATES SNDRV_PCM_RATE_8000_192000
	363	#define MMP_SSPA_FORMATS (SNDRV_PCM_FMTBIT_S8 \| \
	364	SNDRV_PCM_FMTBIT_S16_LE \| \
365	SNDRV_PCM_FMTBIT_S24_LE \| \
fa375d42 ZG	366	SNDRV_PCM_FMTBIT_S32_LE)
fa375d42 ZG	367
cb753443	368	static const struct snd_soc_dai_ops mmp_sspa_dai_ops = {
fa375d42 ZG	369	.startup = mmp_sspa_startup,
	370	.shutdown = mmp_sspa_shutdown,
	371	.trigger = mmp_sspa_trigger,
	372	.hw_params = mmp_sspa_hw_params,
	373	.set_sysclk = mmp_sspa_set_dai_sysclk,
	374	.set_pll = mmp_sspa_set_dai_pll,
	375	.set_fmt = mmp_sspa_set_dai_fmt,
	376	};
	377
5d9ff402	378	static struct snd_soc_dai_driver mmp_sspa_dai = {
fa375d42 ZG	379	.probe = mmp_sspa_probe,
	380	.playback = {
	381	.channels_min = 1,
	382	.channels_max = 128,
	383	.rates = MMP_SSPA_RATES,
	384	.formats = MMP_SSPA_FORMATS,
	385	},
	386	.capture = {
	387	.channels_min = 1,
	388	.channels_max = 2,
	389	.rates = MMP_SSPA_RATES,
	390	.formats = MMP_SSPA_FORMATS,
	391	},
	392	.ops = &mmp_sspa_dai_ops,
	393	};
	394
425f3708 KM	395	static const struct snd_soc_component_driver mmp_sspa_component = {
	396	.name = "mmp-sspa",
	397	};
	398
570f6fe1	399	static int asoc_mmp_sspa_probe(struct platform_device *pdev)
fa375d42 ZG	400	{
	401	struct sspa_priv *priv;
	402	struct resource *res;
	403
	404	priv = devm_kzalloc(&pdev->dev,
	405	sizeof(struct sspa_priv), GFP_KERNEL);
	406	if (!priv)
	407	return -ENOMEM;
	408
	409	priv->sspa = devm_kzalloc(&pdev->dev,
	410	sizeof(struct ssp_device), GFP_KERNEL);
	411	if (priv->sspa == NULL)
	412	return -ENOMEM;
	413
a86854d0 KC	414	priv->dma_params = devm_kcalloc(&pdev->dev,
a86854d0 KC	415	2, sizeof(struct snd_dmaengine_dai_dma_data),
d65a1458	416	GFP_KERNEL);
fa375d42 ZG	417	if (priv->dma_params == NULL)
	418	return -ENOMEM;
	419
	420	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
b25b5aa0 TR	421	priv->sspa->mmio_base = devm_ioremap_resource(&pdev->dev, res);
	422	if (IS_ERR(priv->sspa->mmio_base))
	423	return PTR_ERR(priv->sspa->mmio_base);
fa375d42 ZG	424
	425	priv->sspa->clk = devm_clk_get(&pdev->dev, NULL);
	426	if (IS_ERR(priv->sspa->clk))
	427	return PTR_ERR(priv->sspa->clk);
	428
	429	priv->audio_clk = clk_get(NULL, "mmp-audio");
	430	if (IS_ERR(priv->audio_clk))
	431	return PTR_ERR(priv->audio_clk);
	432
	433	priv->sysclk = clk_get(NULL, "mmp-sysclk");
	434	if (IS_ERR(priv->sysclk)) {
	435	clk_put(priv->audio_clk);
	436	return PTR_ERR(priv->sysclk);
	437	}
	438	clk_enable(priv->audio_clk);
	439	priv->dai_fmt = (unsigned int) -1;
	440	platform_set_drvdata(pdev, priv);
	441
9ff50721 SK	442	return devm_snd_soc_register_component(&pdev->dev, &mmp_sspa_component,
9ff50721 SK	443	&mmp_sspa_dai, 1);
fa375d42 ZG	444	}
fa375d42 ZG	445
570f6fe1	446	static int asoc_mmp_sspa_remove(struct platform_device *pdev)
fa375d42 ZG	447	{
	448	struct sspa_priv *priv = platform_get_drvdata(pdev);
	449
	450	clk_disable(priv->audio_clk);
	451	clk_put(priv->audio_clk);
	452	clk_put(priv->sysclk);
fa375d42 ZG	453	return 0;
	454	}
	455
	456	static struct platform_driver asoc_mmp_sspa_driver = {
	457	.driver = {
	458	.name = "mmp-sspa-dai",
fa375d42 ZG	459	},
fa375d42 ZG	460	.probe = asoc_mmp_sspa_probe,
570f6fe1	461	.remove = asoc_mmp_sspa_remove,
fa375d42 ZG	462	};
	463
	464	module_platform_driver(asoc_mmp_sspa_driver);
	465
	466	MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
	467	MODULE_DESCRIPTION("MMP SSPA SoC Interface");
	468	MODULE_LICENSE("GPL");
e5b7d71a	469	MODULE_ALIAS("platform:mmp-sspa-dai");