[alsa-devel] [PATCH 3/4] ASoC: support pxa168 ssp in ASoC

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Haojian Zhuang

31 Mar 2010 31 Mar '10

2:48 p.m.

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Eric Miao

12 Apr 12 Apr

7:32 p.m.

On Wed, Mar 31, 2010 at 8:48 PM, Haojian Zhuang haojian.zhuang@gmail.com wrote:

...

From 76dcbf165f72a620d8460fc43351179388fcb440 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang haojian.zhuang@marvell.com Date: Wed, 17 Mar 2010 17:31:04 -0400 Subject: [PATCH] ASoC: support pxa168 ssp in ASoC

Support pxa168 ssp in ASoC. The SSP bit clock mechanism is totally different from pxa2xx series.

Signed-off-by: Haojian Zhuang haojian.zhuang@marvell.com

arch/arm/mach-mmp/include/mach/regs-mpmu.h | 48 ++++++++ sound/soc/pxa/Kconfig | 6 +- sound/soc/pxa/Makefile | 2 + sound/soc/pxa/pxa168-ssp.c | 166 ++++++++++++++++++++++++++++ sound/soc/pxa/pxa168-ssp.h | 64 +++++++++++ 5 files changed, 285 insertions(+), 1 deletions(-) create mode 100644 arch/arm/mach-mmp/include/mach/regs-mpmu.h create mode 100644 sound/soc/pxa/pxa168-ssp.c create mode 100644 sound/soc/pxa/pxa168-ssp.h

diff --git a/arch/arm/mach-mmp/include/mach/regs-mpmu.h b/arch/arm/mach-mmp/include/mach/regs-mpmu.h new file mode 100644 index 0000000..0d57236 --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/regs-mpmu.h @@ -0,0 +1,48 @@ +/*

linux/arch/arm/mach-mmp/include/mach/regs-mpmu.h

Main Power Management Unit

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 __ASM_MACH_REGS_MPMU_H +#define __ASM_MACH_REGS_MPMU_H

+#include <mach/addr-map.h>

+#define MPMU_VIRT_BASE (APB_VIRT_BASE + 0x50000) +#define MPMU_REG(off) (MPMU_VIRT_BASE + (off))

+#define MPMU_CPCR MPMU_REG(0x0000) +#define MPMU_FCCR MPMU_REG(0x0008) +#define MPMU_POCR MPMU_REG(0x000c) +#define MPMU_POSR MPMU_REG(0x0010) +#define MPMU_SUCCR MPMU_REG(0x0014) +#define MPMU_VRCR MPMU_REG(0x0018) +#define MPMU_OHCR MPMU_REG(0x001c) +#define MPMU_GPCR MPMU_REG(0x0030) +#define MPMU_PLL2CR MPMU_REG(0x0034) +#define MPMU_SCCR MPMU_REG(0x0038) +#define MPMU_CWUCRM MPMU_REG(0x004c) +#define MPMU_PLL1_REG1 MPMU_REG(0x0050) +#define MPMU_PLL1_REG2 MPMU_REG(0x0054) +#define MPMU_PLL1_SSC MPMU_REG(0x0058) +#define MPMU_PLL2_REG1 MPMU_REG(0x0060) +#define MPMU_PLL2_REG2 MPMU_REG(0x0064) +#define MPMU_PLL2_SSC MPMU_REG(0x0068) +#define MPMU_TS MPMU_REG(0x0080) +#define MPMU_WDTPCR MPMU_REG(0x0200) +#define MPMU_APCR MPMU_REG(0x1000) +#define MPMU_APSR MPMU_REG(0x1004) +#define MPMU_APRR MPMU_REG(0x1020) +#define MPMU_ACGR MPMU_REG(0x1024) +#define MPMU_ARSR MPMU_REG(0x1028) +#define MPMU_AWUCRS MPMU_REG(0x1048) +#define MPMU_AWUCRM MPMU_REG(0x104c) +#define MPMU_ASYSDR MPMU_REG(0x1050) +#define MPMU_ASSPDR MPMU_REG(0x1054)

+#endif /* __ASM_MACH_REGS_APMU_H */ diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig index 7be1d5f..286d52a 100644 --- a/sound/soc/pxa/Kconfig +++ b/sound/soc/pxa/Kconfig @@ -1,6 +1,6 @@ config SND_PXA2XX_SOC tristate "SoC Audio for the Intel PXA2xx chip"

depends on ARCH_PXA

depends on ARCH_PXA || ARCH_MMP

select SND_PXA2XX_LIB help Say Y or M if you want to add support for codecs attached to @@ -25,6 +25,10 @@ config SND_PXA2XX_SOC_SSP tristate select PXA_SSP

+config SND_PXA168_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 diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile index 33c1579..a74e6c9 100644 --- a/sound/soc/pxa/Makefile +++ b/sound/soc/pxa/Makefile @@ -3,11 +3,13 @@ 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 := pxa-ssp.o pxa2xx-ssp.o +snd-soc-pxa168-ssp-objs := pxa-ssp.o pxa168-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 +obj-$(CONFIG_SND_PXA168_SOC_SSP) += snd-soc-pxa168-ssp.o

# PXA Machine Support snd-soc-corgi-objs := corgi.o diff --git a/sound/soc/pxa/pxa168-ssp.c b/sound/soc/pxa/pxa168-ssp.c new file mode 100644 index 0000000..d28d18a --- /dev/null +++ b/sound/soc/pxa/pxa168-ssp.c @@ -0,0 +1,166 @@ +/*

pxa168-ssp.c -- ALSA Soc Audio Layer

Copyright 2009-2010 Marvell International Ltd.

Haojian Zhuang haojian.zhuang@marvell.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.

TODO:

o Test network mode

*/

+#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/clk.h>

+#include <sound/core.h> +#include <sound/soc.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/pxa2xx-lib.h>

+#include <mach/hardware.h> +#include <mach/dma.h> +#include <mach/regs-apbc.h> +#include <mach/regs-apmu.h> +#include <mach/regs-mpmu.h> +#include <plat/ssp.h>

+#include "pxa2xx-pcm.h" +#include "pxa168-ssp.h" +#include "pxa-ssp.h"

+/*

Set the SSP ports SYSCLK only from Audio SYSCLK.

*/

+static int pxa168_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,

unsigned int freq, int dir)

+{

struct ssp_priv *priv = cpu_dai->private_data;

struct ssp_device *ssp = priv->ssp;

unsigned int sscr0, data, asysdr, asspdr;

dev_dbg(&ssp->pdev->dev, "%s id: %d, clk_id %d, freq %u\n",

__func__, cpu_dai->id, clk_id, freq);

/* freq is the index of mclk_conf table */

if ((freq < 0) || (freq >= ARRAY_SIZE(mclk_conf))) {

dev_warn(&ssp->pdev->dev, "Wrong frequency index:%d\n", freq);

return -EINVAL;

}

asysdr = (mclk_conf[freq].mclk_num << 16)

| mclk_conf[freq].mclk_denom;

asspdr = 0;

/* If ASYSCLK is supplied by pxa168, ASSPDR should be configured. */

if (dir == SND_SOC_CLOCK_OUT)

asspdr = (mclk_conf[freq].bclk_num << 16)

| mclk_conf[freq].bclk_denom;

pxa_ssp_disable(ssp);

clk_disable(ssp->clk); /* SSP port internal clock */

/* clear ECS, NCS, MOD, ACS */

sscr0 = pxa_ssp_read_reg(ssp, SSCR0);

data = sscr0 & ~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);

if (sscr0 != data)

pxa_ssp_write_reg(ssp, SSCR0, data);

/* update divider register in MPMU */

__raw_writel(asysdr, MPMU_ASYSDR);

__raw_writel(asspdr, MPMU_ASSPDR);

clk_enable(ssp->clk); /* SSP port internal clock */

pxa_ssp_enable(ssp);

return 0;

+}

+static int pxa168_ssp_hw_free(struct snd_pcm_substream *substream,

struct snd_soc_dai *dai)

+{

struct snd_soc_pcm_runtime *rtd = substream->private_data;

struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

struct ssp_priv *priv = cpu_dai->private_data;

struct ssp_device *ssp = priv->ssp;

pxa_ssp_disable(ssp);

/* update divider register in MPMU */

__raw_writel(0, MPMU_ASYSDR);

__raw_writel(0, MPMU_ASSPDR);

return 0;

+}

+static struct snd_soc_dai_ops pxa168_ssp_dai_ops = {

.hw_free = pxa168_ssp_hw_free,

.set_sysclk = pxa168_ssp_set_dai_sysclk,

+};

+#define PXA168_SSP_RATES SNDRV_PCM_RATE_8000_96000 +#define PXA168_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \

SNDRV_PCM_FMTBIT_S24_LE | \

SNDRV_PCM_FMTBIT_S32_LE)

+#define PXA168_SSP_DAI(_id) \ +{ \

.name = "pxa168-ssp", \

.id = _id, \

.playback = { \

.channels_min = 1, \

.channels_max = 2, \

.rates = PXA168_SSP_RATES, \

.formats = PXA168_SSP_FORMATS, \

}, \

.capture = { \

.channels_min = 1, \

.channels_max = 2, \

.rates = PXA168_SSP_RATES, \

.formats = PXA168_SSP_FORMATS, \

}, \

.ops = &pxa168_ssp_dai_ops, \

+}

+struct snd_soc_dai pxa168_ssp_dai[] = {

PXA168_SSP_DAI(PXA168_DAI_SSP1),

PXA168_SSP_DAI(PXA168_DAI_SSP2),

PXA168_SSP_DAI(PXA168_DAI_SSP3),

PXA168_SSP_DAI(PXA168_DAI_SSP4),

PXA168_SSP_DAI(PXA168_DAI_SSP5),

+}; +EXPORT_SYMBOL_GPL(pxa168_ssp_dai);

+static int __init pxa168_ssp_init(void) +{

struct snd_soc_dai *dai;

int i, ret;

for (i = 0; i < ARRAY_SIZE(pxa168_ssp_dai); i++) {

dai = &pxa168_ssp_dai[i];

ret = pxa_ssp_register_dai(dai);

if (ret)

return ret;

}

return ret;

+} +module_init(pxa168_ssp_init);

+static void __exit pxa168_ssp_exit(void) +{

struct snd_soc_dai *dai = NULL;

int i;

for (i = 0; i < ARRAY_SIZE(pxa168_ssp_dai); i++) {

dai = &pxa168_ssp_dai[i];

snd_soc_unregister_dai(dai);

}

+} +module_exit(pxa168_ssp_exit);

+/* Module information */ +MODULE_AUTHOR("Haojian Zhuang haojian.zhuang@marvell.com"); +MODULE_DESCRIPTION("PXA168 SSP SoC Interface"); +MODULE_LICENSE("GPL");

diff --git a/sound/soc/pxa/pxa168-ssp.h b/sound/soc/pxa/pxa168-ssp.h new file mode 100644 index 0000000..bf73137 --- /dev/null +++ b/sound/soc/pxa/pxa168-ssp.h @@ -0,0 +1,64 @@ +/*

ASoC PXA168 SSP port support

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 _PXA168_SSP_H +#define _PXA168_SSP_H

+/* pxa DAI SSP IDs */ +#define PXA168_DAI_SSP1 0 +#define PXA168_DAI_SSP2 1 +#define PXA168_DAI_SSP3 2 +#define PXA168_DAI_SSP4 3 +#define PXA168_DAI_SSP5 4

+/* PXA168 SSP SYSCLK source */ +#define PXA168_ASYSCLK_MASTER 0 /* ASYSCLK master -- pxa168 */ +#define PXA168_ASYSCLK_SLAVE 1 /* ASYSCLK slave -- pxa168 */

+struct pxa168_ssp_mclk {

unsigned int rate;

unsigned int format;

unsigned int channel;

unsigned int mclk;

unsigned int mclk_denom;

unsigned int mclk_num;

unsigned int bclk;

unsigned int bclk_denom;

unsigned int bclk_num;

+};

+/*

This table is used while CPU is clock master.

MCLK = 312MHz * ASYSCLK_DENOM / ASYSCLK_NUM

BCLK = MCLK * SSPSCLK_DENOM / SSPSCLK_NUM

*/

+static const struct pxa168_ssp_mclk mclk_conf[] = {

/* rate, fmt, chn, mclk, den, num, bclk, den, num */

{96000, 16, 2, 12288000, 64, 1625, 6144000, 1, 2},

{96000, 16, 1, 12288000, 64, 1625, 1536000, 1, 8},

{88200, 16, 2, 11289600, 294, 8125, 5644800, 1, 2},

{88200, 16, 1, 11289600, 294, 8125, 1411200, 1, 8},

{48000, 16, 2, 12288000, 64, 1625, 3072000, 1, 4},

{48000, 16, 1, 12288000, 64, 1625, 768000, 1, 16},

{44100, 16, 2, 11289600, 294, 8125, 2822400, 1, 4},

{44100, 16, 1, 11289600, 294, 8125, 705600, 1, 16},

{32000, 16, 2, 12288000, 64, 1625, 2048000, 1, 6},

{32000, 16, 1, 12288000, 64, 1625, 512000, 1, 24},

{22050, 16, 2, 11289600, 294, 8125, 1411200, 1, 8},

{22050, 16, 1, 11289600, 294, 8125, 352800, 1, 32},

{16000, 16, 2, 12288000, 64, 1625, 1024000, 1, 12},

{16000, 16, 1, 12288000, 64, 1625, 256000, 1, 48},

{11025, 16, 2, 11289600, 294, 8125, 705600, 1, 16},

{11025, 16, 1, 11289600, 294, 8125, 176400, 1, 64},

{ 8000, 16, 2, 12288000, 64, 1625, 512000, 1, 24},

{ 8000, 16, 1, 12288000, 64, 1625, 128000, 1, 96},

+};

It's not a good idea to have a static array in the header file. And as Mark pointed out in the comment to the later patch, this array and the related functions could be well placed into some common places. And I'm not sure if this applies to pxa910 as well, which could be well ended up in common.c or pxa{168,910}.c.

...

+extern struct snd_soc_dai pxa168_ssp_dai[];

+#endif

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Eric Miao
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