[PATCH] ASoC: support pxa168 ssp in ASoC
Haojian Zhuang
haojian.zhuang at marvell.com
Wed Mar 17 17:31:04 EDT 2010
Support pxa168 ssp in ASoC. The SSP bit clock mechanism is totally different
from pxa2xx series.
Signed-off-by: Haojian Zhuang <haojian.zhuang at 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 at 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 at 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},
+};
+
+extern struct snd_soc_dai pxa168_ssp_dai[];
+
+#endif
--
1.5.6.5
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