path: root/packages/linux/linux-ezx-2.6.21/patches/asoc-pxa-ssp.patch

Index: linux-2.6.21/sound/soc/pxa/pxa2xx-ssp.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21/sound/soc/pxa/pxa2xx-ssp.c	2007-09-02 22:50:31.000000000 -0300
@@ -0,0 +1,671 @@
+/*
+ * pxa2xx-ssp.c  --  ALSA Soc Audio Layer
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Author: Liam Girdwood
+ *         liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  Revision history
+ *    12th Aug 2005   Initial version.
+ *
+ * TODO:
+ *  o The SSP driver _mostly_ works, however is in need of testing and
+ *     someone with time to complete it.
+ *  o Test network mode for > 16bit sample size
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <asm/hardware.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/audio.h>
+#include <asm/arch/ssp.h>
+
+#include "pxa2xx-pcm.h"
+#include "pxa2xx-ssp.h"
+
+#define PXA_SSP_DEBUG 0
+
+/*
+ * The following should be defined in pxa-regs.h
+ */
+#define SSCR0_ACS		(1 << 30)	/* Audio Clock Select */
+#define SSACD_SCDB		(1 << 3)	/* SSPSYSCLK Divider Bypass (SSCR0[ACS] must be set) */
+#define SSACD_ACPS(x)	(x << 4)	/* Audio clock PLL select */
+#define SSACD_ACDS(x)	(x << 0)	/* Audio clock divider select */
+
+/*
+ * SSP audio private data
+ */
+struct ssp_priv {
+	unsigned int sysclk;
+};
+
+static struct ssp_priv ssp_clk[3];
+static struct ssp_dev ssp[3];
+#ifdef CONFIG_PM
+static struct ssp_state ssp_state[3];
+#endif
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp1_pcm_mono_out = {
+	.name			= "SSP1 PCM Mono out",
+	.dev_addr		= __PREG(SSDR_P1),
+	.drcmr			= &DRCMRTXSSDR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp1_pcm_mono_in = {
+	.name			= "SSP1 PCM Mono in",
+	.dev_addr		= __PREG(SSDR_P1),
+	.drcmr			= &DRCMRRXSSDR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp1_pcm_stereo_out = {
+	.name			= "SSP1 PCM Stereo out",
+	.dev_addr		= __PREG(SSDR_P1),
+	.drcmr			= &DRCMRTXSSDR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp1_pcm_stereo_in = {
+	.name			= "SSP1 PCM Stereo in",
+	.dev_addr		= __PREG(SSDR_P1),
+	.drcmr			= &DRCMRRXSSDR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp2_pcm_mono_out = {
+	.name			= "SSP2 PCM Mono out",
+	.dev_addr		= __PREG(SSDR_P2),
+	.drcmr			= &DRCMRTXSS2DR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp2_pcm_mono_in = {
+	.name			= "SSP2 PCM Mono in",
+	.dev_addr		= __PREG(SSDR_P2),
+	.drcmr			= &DRCMRRXSS2DR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp2_pcm_stereo_out = {
+	.name			= "SSP2 PCM Stereo out",
+	.dev_addr		= __PREG(SSDR_P2),
+	.drcmr			= &DRCMRTXSS2DR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp2_pcm_stereo_in = {
+	.name			= "SSP2 PCM Stereo in",
+	.dev_addr		= __PREG(SSDR_P2),
+	.drcmr			= &DRCMRRXSS2DR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp3_pcm_mono_out = {
+	.name			= "SSP3 PCM Mono out",
+	.dev_addr		= __PREG(SSDR_P3),
+	.drcmr			= &DRCMRTXSS3DR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp3_pcm_mono_in = {
+	.name			= "SSP3 PCM Mono in",
+	.dev_addr		= __PREG(SSDR_P3),
+	.drcmr			= &DRCMRRXSS3DR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH2,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp3_pcm_stereo_out = {
+	.name			= "SSP3 PCM Stereo out",
+	.dev_addr		= __PREG(SSDR_P3),
+	.drcmr			= &DRCMRTXSS3DR,
+	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params pxa2xx_ssp3_pcm_stereo_in = {
+	.name			= "SSP3 PCM Stereo in",
+	.dev_addr		= __PREG(SSDR_P3),
+	.drcmr			= &DRCMRRXSS3DR,
+	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
+				  DCMD_BURST16 | DCMD_WIDTH4,
+};
+
+static struct pxa2xx_pcm_dma_params *ssp_dma_params[3][4] = {
+	{&pxa2xx_ssp1_pcm_mono_out, &pxa2xx_ssp1_pcm_mono_in,
+	&pxa2xx_ssp1_pcm_stereo_out,&pxa2xx_ssp1_pcm_stereo_in,},
+	{&pxa2xx_ssp2_pcm_mono_out, &pxa2xx_ssp2_pcm_mono_in,
+	&pxa2xx_ssp2_pcm_stereo_out, &pxa2xx_ssp2_pcm_stereo_in,},
+	{&pxa2xx_ssp3_pcm_mono_out, &pxa2xx_ssp3_pcm_mono_in,
+	&pxa2xx_ssp3_pcm_stereo_out,&pxa2xx_ssp3_pcm_stereo_in,},
+};
+
+static int pxa2xx_ssp_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret = 0;
+
+	if (!rtd->dai->cpu_dai->active) {
+		ret = ssp_init (&ssp[cpu_dai->id], cpu_dai->id + 1,
+			SSP_NO_IRQ);
+		if (ret < 0)
+			return ret;
+		ssp_disable(&ssp[cpu_dai->id]);
+	}
+	return ret;
+}
+
+static void pxa2xx_ssp_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	if (!cpu_dai->active) {
+		ssp_disable(&ssp[cpu_dai->id]);
+		ssp_exit(&ssp[cpu_dai->id]);
+	}
+}
+
+#if defined (CONFIG_PXA27x)
+static int cken[3] = {CKEN23_SSP1, CKEN3_SSP2, CKEN4_SSP3};
+#else
+static int cken[3] = {CKEN3_SSP, CKEN9_NSSP, CKEN10_ASSP};
+#endif
+
+#ifdef CONFIG_PM
+
+static int pxa2xx_ssp_suspend(struct platform_device *pdev,
+	struct snd_soc_cpu_dai *dai)
+{
+	if (!dai->active)
+		return 0;
+
+	ssp_save_state(&ssp[dai->id], &ssp_state[dai->id]);
+	pxa_set_cken(cken[dai->id], 0);
+	return 0;
+}
+
+static int pxa2xx_ssp_resume(struct platform_device *pdev,
+	struct snd_soc_cpu_dai *dai)
+{
+	if (!dai->active)
+		return 0;
+
+	pxa_set_cken(cken[dai->id], 1);
+	ssp_restore_state(&ssp[dai->id], &ssp_state[dai->id]);
+	ssp_enable(&ssp[dai->id]);
+
+	return 0;
+}
+
+#else
+#define pxa2xx_ssp_suspend	NULL
+#define pxa2xx_ssp_resume	NULL
+#endif
+
+/*
+ * Set the SSP ports SYSCLK.
+ */
+static int pxa2xx_ssp_set_dai_sysclk(struct snd_soc_cpu_dai *cpu_dai,
+	int clk_id, unsigned int freq, int dir)
+{
+	int port = cpu_dai->id + 1;
+	u32 sscr0 = SSCR0_P(port) &
+		~(SSCR0_ECS |  SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
+
+	switch (clk_id) {
+	case PXA2XX_SSP_CLK_PLL:
+		/* Internal PLL is fixed on pxa25x and pxa27x */
+#ifdef CONFIG_PXA27x
+		ssp_clk[cpu_dai->id].sysclk = 13000000;
+#else
+		ssp_clk[cpu_dai->id].sysclk = 1843200;
+#endif
+		break;
+	case PXA2XX_SSP_CLK_EXT:
+		ssp_clk[cpu_dai->id].sysclk = freq;
+		sscr0 |= SSCR0_ECS;
+		break;
+	case PXA2XX_SSP_CLK_NET:
+		ssp_clk[cpu_dai->id].sysclk = freq;
+		sscr0 |= SSCR0_NCS | SSCR0_MOD;
+		break;
+	case PXA2XX_SSP_CLK_AUDIO:
+		ssp_clk[cpu_dai->id].sysclk = 0;
+		SSCR0_P(port) |= SSCR0_SerClkDiv(1);
+		sscr0 |= SSCR0_ACS;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	/* the SSP CKEN clock must be disabled when changing SSP clock mode */
+	pxa_set_cken(cken[cpu_dai->id], 0);
+	SSCR0_P(port) |= sscr0;
+	pxa_set_cken(cken[cpu_dai->id], 1);
+	return 0;
+}
+
+/*
+ * Set the SSP clock dividers.
+ */
+static int pxa2xx_ssp_set_dai_clkdiv(struct snd_soc_cpu_dai *cpu_dai,
+	int div_id, int div)
+{
+	int port = cpu_dai->id + 1;
+
+	switch (div_id) {
+	case PXA2XX_SSP_AUDIO_DIV_ACDS:
+		SSACD_P(port) &= ~ 0x7;
+		SSACD_P(port) |= SSACD_ACDS(div);
+		break;
+	case PXA2XX_SSP_AUDIO_DIV_SCDB:
+		SSACD_P(port) &= ~0x8;
+		if (div == PXA2XX_SSP_CLK_SCDB_1)
+			SSACD_P(port) |= SSACD_SCDB;
+		break;
+	case PXA2XX_SSP_DIV_SCR:
+		SSCR0_P(port) &= ~SSCR0_SCR;
+		SSCR0_P(port) |= SSCR0_SerClkDiv(div);
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/*
+ * Configure the PLL frequency pxa27x and (afaik - pxa320 only)
+ */
+static int pxa2xx_ssp_set_dai_pll(struct snd_soc_cpu_dai *cpu_dai,
+	int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+	int port = cpu_dai->id + 1;
+
+	SSACD_P(port) &= ~0x70;
+	switch (freq_out) {
+	case 5622000:
+		break;
+	case 11345000:
+		SSACD_P(port) |= (0x1 << 4);
+		break;
+	case 12235000:
+		SSACD_P(port) |= (0x2 << 4);
+		break;
+	case 14857000:
+		SSACD_P(port) |= (0x3 << 4);
+		break;
+	case 32842000:
+		SSACD_P(port) |= (0x4 << 4);
+		break;
+	case 48000000:
+		SSACD_P(port) |= (0x5 << 4);
+		break;
+	}
+	return 0;
+}
+
+/*
+ * Set the active slots in TDM/Network mode
+ */
+static int pxa2xx_ssp_set_dai_tdm_slot(struct snd_soc_cpu_dai *cpu_dai,
+	unsigned int mask, int slots)
+{
+	int port = cpu_dai->id + 1;
+
+	SSCR0_P(port) &= ~SSCR0_SlotsPerFrm(7);
+
+	/* set number of active slots */
+	SSCR0_P(port) |= SSCR0_SlotsPerFrm(slots);
+
+	/* set active slot mask */
+	SSTSA_P(port) = mask;
+	SSRSA_P(port) = mask;
+	return 0;
+}
+
+/*
+ * Tristate the SSP DAI lines
+ */
+static int pxa2xx_ssp_set_dai_tristate(struct snd_soc_cpu_dai *cpu_dai,
+	int tristate)
+{
+	int port = cpu_dai->id + 1;
+
+	if (tristate)
+		SSCR1_P(port) &= ~SSCR1_TTE;
+	else
+		SSCR1_P(port) |= SSCR1_TTE;
+
+	return 0;
+}
+
+/*
+ * Set up the SSP DAI format.
+ * The SSP Port must be inactive before calling this function as the
+ * physical interface format is changed.
+ */
+static int pxa2xx_ssp_set_dai_fmt(struct snd_soc_cpu_dai *cpu_dai,
+		unsigned int fmt)
+{
+	int port = cpu_dai->id + 1;
+
+	/* reset port settings */
+	SSCR0_P(port) = 0;
+	SSCR1_P(port) = 0;
+	SSPSP_P(port) = 0;
+
+	/* NOTE: I2S emulation is still very much work in progress here */
+
+	/* FIXME: this is what wince uses for msb */
+	if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_MSB) {
+		SSCR0_P(port) = SSCR0_EDSS | SSCR0_TISSP | SSCR0_DataSize(16);
+
+//		SSCR1_P(port) = SSCR1_RxTresh(8) | SSCR1_TxTresh(8); /* doesn't seem to be needed */
+		return 0;
+	}
+
+	/* check for I2S emulation mode - handle it separately  */
+	if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) ||
+		((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_MSB)) {
+		/* 8.4.11 */
+
+		/* Only SSCR0[NCS] or SSCR0[ECS] bit fields settings are optional */
+		SSCR0_P(port) = SSCR0_EDSS | SSCR0_PSP | SSCR0_DataSize(16);
+
+		/* SSCR1 = 0x203C3C03 */
+		/* SSCR1[SCLKDIR] and SSCR1[SFRMDIR] must be cleared (master only ???),
+		 * all other bit fields settings are optional. */
+		//SSCR1_P(port) &= ~(SSCR1_SCLKDIR | SSCR1_SFRMDIR);
+
+		/* set FIFO thresholds */
+		SSCR1_P(port) = SSCR1_RxTresh(14) | SSCR1_TxTresh(1);
+
+		/* normal: */
+		/* all bit fields must be cleared except: FSRT = 1 and
+		 * SFRMWDTH = 16, DMYSTART=0,1) */
+		SSPSP_P(port) = SSPSP_FSRT | SSPSP_SFRMWDTH(16) | SSPSP_DMYSTRT(0);
+		return 0;
+	}
+
+	SSCR0_P(port) |= SSCR0_PSP;
+	SSCR1_P(port) = SSCR1_RxTresh(14) | SSCR1_TxTresh(1) |
+		SSCR1_TRAIL | SSCR1_RWOT;
+
+	switch(fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		SSCR1_P(port) |= (SSCR1_SCLKDIR | SSCR1_SFRMDIR);
+		break;
+	case SND_SOC_DAIFMT_CBM_CFS:
+		SSCR1_P(port) |= SSCR1_SCLKDIR;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFM:
+		SSCR1_P(port) |= SSCR1_SFRMDIR;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		SSPSP_P(port) |= SSPSP_SFRMP | SSPSP_FSRT;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_DSP_A:
+		SSPSP_P(port) |= SSPSP_DMYSTRT(1);
+	case SND_SOC_DAIFMT_DSP_B:
+		SSPSP_P(port) |= SSPSP_SCMODE(2);
+		break;
+	case SND_SOC_DAIFMT_I2S:
+	case SND_SOC_DAIFMT_MSB:
+		/* handled above */
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/*
+ * Set the SSP audio DMA parameters and sample size.
+ * Can be called multiple times by oss emulation.
+ */
+static int pxa2xx_ssp_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+	int dma = 0, chn = params_channels(params);
+	int port = cpu_dai->id + 1;
+
+	/* select correct DMA params */
+	if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+		dma = 1; /* capture DMA offset is 1,3 */
+	if (chn == 2)
+		dma += 2; /* stereo DMA offset is 2, mono is 0 */
+	cpu_dai->dma_data = ssp_dma_params[cpu_dai->id][dma];
+
+	/* we can only change the settings if the port is not in use */
+	if (SSCR0_P(port) & SSCR0_SSE)
+		return 0;
+
+	/* clear selected SSP bits */
+	SSCR0_P(port) &= ~(SSCR0_DSS | SSCR0_EDSS);
+
+	/* bit size */
+	switch(params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		SSCR0_P(port) |= SSCR0_DataSize(16);
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		SSCR0_P(port) |=(SSCR0_EDSS | SSCR0_DataSize(8));
+		/* we must be in network mode (2 slots) for 24 bit stereo */
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		SSCR0_P(port) |= (SSCR0_EDSS | SSCR0_DataSize(16));
+		/* we must be in network mode (2 slots) for 32 bit stereo */
+		break;
+	}
+
+#if PXA_SSP_DEBUG
+	printk("SSCR0 %x SSCR1 %x SSTO %x SSPSP %x SSSR %x SSACD %x\n",
+		SSCR0_P(port), SSCR1_P(port),
+		SSTO_P(port), SSPSP_P(port),
+		SSSR_P(port), SSACD_P(port));
+#endif
+	return 0;
+}
+
+static int pxa2xx_ssp_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret = 0;
+	int port = cpu_dai->id + 1;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_RESUME:
+		ssp_enable(&ssp[cpu_dai->id]);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			SSCR1_P(port) |= SSCR1_TSRE;
+		else
+			SSCR1_P(port) |= SSCR1_RSRE;
+		SSSR_P(port) |= SSSR_P(port);
+		break;
+	case SNDRV_PCM_TRIGGER_START:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			SSCR1_P(port) |= SSCR1_TSRE;
+		else
+			SSCR1_P(port) |= SSCR1_RSRE;
+		ssp_enable(&ssp[cpu_dai->id]);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			SSCR1_P(port) &= ~SSCR1_TSRE;
+		else
+			SSCR1_P(port) &= ~SSCR1_RSRE;
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		ssp_disable(&ssp[cpu_dai->id]);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			SSCR1_P(port) &= ~SSCR1_TSRE;
+		else
+			SSCR1_P(port) &= ~SSCR1_RSRE;
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+#if PXA_SSP_DEBUG
+	printk("trig cmd %d\n", cmd);
+	printk("SSCR0 %x SSCR1 %x SSTO %x SSPSP %x SSSR %x\n",
+		SSCR0_P(port), SSCR1_P(port),
+		SSTO_P(port), SSPSP_P(port),
+		SSSR_P(port));
+#endif
+	return ret;
+}
+
+#define PXA2XX_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
+		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
+
+#define PXA2XX_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
+	SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+struct snd_soc_cpu_dai pxa_ssp_dai[] = {
+	{	.name = "pxa2xx-ssp1",
+		.id = 0,
+		.type = SND_SOC_DAI_PCM,
+		.suspend = pxa2xx_ssp_suspend,
+		.resume = pxa2xx_ssp_resume,
+		.playback = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.capture = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.ops = {
+			.startup = pxa2xx_ssp_startup,
+			.shutdown = pxa2xx_ssp_shutdown,
+			.trigger = pxa2xx_ssp_trigger,
+			.hw_params = pxa2xx_ssp_hw_params,},
+		.dai_ops = {
+			.set_sysclk = pxa2xx_ssp_set_dai_sysclk,
+			.set_clkdiv = pxa2xx_ssp_set_dai_clkdiv,
+			.set_pll = pxa2xx_ssp_set_dai_pll,
+			.set_fmt = pxa2xx_ssp_set_dai_fmt,
+			.set_tdm_slot = pxa2xx_ssp_set_dai_tdm_slot,
+			.set_tristate = pxa2xx_ssp_set_dai_tristate,
+		},
+	},
+	{	.name = "pxa2xx-ssp2",
+		.id = 1,
+		.type = SND_SOC_DAI_PCM,
+		.suspend = pxa2xx_ssp_suspend,
+		.resume = pxa2xx_ssp_resume,
+		.playback = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.capture = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.ops = {
+			.startup = pxa2xx_ssp_startup,
+			.shutdown = pxa2xx_ssp_shutdown,
+			.trigger = pxa2xx_ssp_trigger,
+			.hw_params = pxa2xx_ssp_hw_params,},
+		.dai_ops = {
+			.set_sysclk = pxa2xx_ssp_set_dai_sysclk,
+			.set_clkdiv = pxa2xx_ssp_set_dai_clkdiv,
+			.set_pll = pxa2xx_ssp_set_dai_pll,
+			.set_fmt = pxa2xx_ssp_set_dai_fmt,
+			.set_tdm_slot = pxa2xx_ssp_set_dai_tdm_slot,
+			.set_tristate = pxa2xx_ssp_set_dai_tristate,
+		},
+	},
+	{	.name = "pxa2xx-ssp3",
+		.id = 2,
+		.type = SND_SOC_DAI_PCM,
+		.suspend = pxa2xx_ssp_suspend,
+		.resume = pxa2xx_ssp_resume,
+		.playback = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.capture = {
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = PXA2XX_SSP_RATES,
+			.formats = PXA2XX_SSP_FORMATS,},
+		.ops = {
+			.startup = pxa2xx_ssp_startup,
+			.shutdown = pxa2xx_ssp_shutdown,
+			.trigger = pxa2xx_ssp_trigger,
+			.hw_params = pxa2xx_ssp_hw_params,},
+		.dai_ops = {
+			.set_sysclk = pxa2xx_ssp_set_dai_sysclk,
+			.set_clkdiv = pxa2xx_ssp_set_dai_clkdiv,
+			.set_pll = pxa2xx_ssp_set_dai_pll,
+			.set_fmt = pxa2xx_ssp_set_dai_fmt,
+			.set_tdm_slot = pxa2xx_ssp_set_dai_tdm_slot,
+			.set_tristate = pxa2xx_ssp_set_dai_tristate,
+		},
+	},
+};
+EXPORT_SYMBOL_GPL(pxa_ssp_dai);
+
+/* Module information */
+MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com");
+MODULE_DESCRIPTION("pxa2xx SSP/PCM SoC Interface");
+MODULE_LICENSE("GPL");
Index: linux-2.6.21/sound/soc/pxa/pxa2xx-ssp.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21/sound/soc/pxa/pxa2xx-ssp.h	2007-09-02 22:48:59.000000000 -0300
@@ -0,0 +1,42 @@
+/*
+ * linux/sound/arm/pxa2xx-ssp.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _PXA2XX_SSP_H
+#define _PXA2XX_SSP_H
+
+/* pxa2xx DAI SSP ID's */
+#define PXA2XX_DAI_SSP1			0
+#define PXA2XX_DAI_SSP2			1
+#define PXA2XX_DAI_SSP3			2
+
+/* SSP clock sources */
+#define PXA2XX_SSP_CLK_PLL	0
+#define PXA2XX_SSP_CLK_EXT	1
+#define PXA2XX_SSP_CLK_NET	2
+#define PXA2XX_SSP_CLK_AUDIO	3
+
+/* SSP audio dividers */
+#define PXA2XX_SSP_AUDIO_DIV_ACDS		0
+#define PXA2XX_SSP_AUDIO_DIV_SCDB		1
+#define PXA2XX_SSP_DIV_SCR				2
+
+/* SSP ACDS audio dividers values */
+#define PXA2XX_SSP_CLK_AUDIO_DIV_1		0
+#define PXA2XX_SSP_CLK_AUDIO_DIV_2		1
+#define PXA2XX_SSP_CLK_AUDIO_DIV_4		2
+#define PXA2XX_SSP_CLK_AUDIO_DIV_8		3
+#define PXA2XX_SSP_CLK_AUDIO_DIV_16	4
+#define PXA2XX_SSP_CLK_AUDIO_DIV_32	5
+
+/* SSP divider bypass */
+#define PXA2XX_SSP_CLK_SCDB_4		0
+#define PXA2XX_SSP_CLK_SCDB_1		1
+
+extern struct snd_soc_cpu_dai pxa_ssp_dai[3];
+
+#endif
Index: linux-2.6.21/sound/soc/pxa/Kconfig
===================================================================
--- linux-2.6.21.orig/sound/soc/pxa/Kconfig	2007-09-02 22:48:51.000000000 -0300
+++ linux-2.6.21/sound/soc/pxa/Kconfig	2007-09-02 22:50:18.000000000 -0300
@@ -20,6 +20,10 @@
 config SND_PXA2XX_SOC_I2S
 	tristate
 
+config SND_PXA2XX_SOC_SSP
+	tristate
+	select PXA_SSP
+
 config SND_PXA2XX_SOC_CORGI
 	tristate "SoC Audio support for Sharp Zaurus SL-C7x0"
 	depends on SND_PXA2XX_SOC && PXA_SHARP_C7xx
Index: linux-2.6.21/sound/soc/pxa/Makefile
===================================================================
--- linux-2.6.21.orig/sound/soc/pxa/Makefile	2007-09-02 22:48:51.000000000 -0300
+++ linux-2.6.21/sound/soc/pxa/Makefile	2007-09-02 22:50:18.000000000 -0300
@@ -2,10 +2,12 @@
 snd-soc-pxa2xx-objs := pxa2xx-pcm.o
 snd-soc-pxa2xx-ac97-objs := pxa2xx-ac97.o
 snd-soc-pxa2xx-i2s-objs := pxa2xx-i2s.o
+snd-soc-pxa2xx-ssp-objs := pxa2xx-ssp.o
 
 obj-$(CONFIG_SND_PXA2XX_SOC) += snd-soc-pxa2xx.o
 obj-$(CONFIG_SND_PXA2XX_SOC_AC97) += snd-soc-pxa2xx-ac97.o
 obj-$(CONFIG_SND_PXA2XX_SOC_I2S) += snd-soc-pxa2xx-i2s.o
+obj-$(CONFIG_SND_PXA2XX_SOC_SSP) += snd-soc-pxa2xx-ssp.o
 
 # PXA Machine Support
 snd-soc-corgi-objs := corgi.o