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

On Sat, 2010-04-17 at 13:36 +0800, Haojian Zhuang wrote:

...

From 0539606a09ecc94f45dcf4c793ba46c1f10738b1 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/pxa-ssp.h | 1 + sound/soc/pxa/pxa168-ssp.c | 233 ++++++++++++++++++++++++++++ sound/soc/pxa/pxa168-ssp.h | 27 ++++ 6 files changed, 316 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/pxa-ssp.h b/sound/soc/pxa/pxa-ssp.h index af4a09b..852660a 100644 --- a/sound/soc/pxa/pxa-ssp.h +++ b/sound/soc/pxa/pxa-ssp.h @@ -15,6 +15,7 @@ struct ssp_priv { struct ssp_device *ssp; unsigned int sysclk;

• unsigned int sysclk_idx; int dai_fmt;

#ifdef CONFIG_PM uint32_t cr0; diff --git a/sound/soc/pxa/pxa168-ssp.c b/sound/soc/pxa/pxa168-ssp.c new file mode 100644 index 0000000..487e899 --- /dev/null +++ b/sound/soc/pxa/pxa168-ssp.c @@ -0,0 +1,233 @@ +/*

• • 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"

+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},

+};

+int pxa168_query_mclk(struct snd_pcm_substream *substream,

•       struct snd_pcm_hw_params *params)
  

+{

• 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;
• unsigned int rate, width, channel;
• int i, ret = -EINVAL;
• rate = params_rate(params);
• width = snd_pcm_format_physical_width(params_format(params));
• channel = params_channels(params);
• for (i = 0; i < ARRAY_SIZE(mclk_conf); i++) {

• if ((mclk_conf[i].rate == rate)
  

• 	&& (mclk_conf[i].format == width)
  

• 	&& (mclk_conf[i].channel == channel)) {
  

• 	/* save both mclk and mclk index into ssp_priv */
  

• 	priv->sysclk = mclk_conf[i].mclk;
  

• 	priv->sysclk_idx = i;
  

• 	ret = priv->sysclk;
  

• 	break;
  

• }
  

• }
• return ret;

+} +EXPORT_SYMBOL_GPL(pxa168_query_mclk);

+/*

• • 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) || (priv->sysclk_idx >= ARRAY_SIZE(mclk_conf))) {

• dev_warn(&ssp->pdev->dev, "Wrong frequency on SYSCLK\n");
  

• return -EINVAL;
  

• }
• asysdr = (mclk_conf[priv->sysclk_idx].mclk_num << 16)

• | mclk_conf[priv->sysclk_idx].mclk_denom;
  

• asspdr = 0;
• /* If ASYSCLK is supplied by pxa168, ASSPDR should be configured. */
• if (dir == SND_SOC_CLOCK_OUT)

• asspdr = (mclk_conf[priv->sysclk_idx].bclk_num << 16)
  

• 	| mclk_conf[priv->sysclk_idx].bclk_denom;
  

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

Again, we should not disable when the SSP is active.

Thanks

Liam