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openwrt-xburst/target/linux/coldfire/patches/009-Add-ALSA-driver-for-MCF5445x.patch
kaloz 7e7649baa9 [coldfire]: switch to 2.6.38 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31546 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-05-01 07:00:17 +00:00

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51 KiB
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From d37d2d880efdc0ce515df4155ddafef3835d1b7f Mon Sep 17 00:00:00 2001
From: Alison Wang <b18965@freescale.com>
Date: Thu, 4 Aug 2011 09:59:41 +0800
Subject: [PATCH 09/52] Add ALSA driver for MCF5445x
Add ALSA driver for MCF54451 and MCF54455.
Signed-off-by: Alison Wang <b18965@freescale.com>
---
sound/Kconfig | 6 +-
sound/Makefile | 1 +
sound/coldfire/Kconfig | 14 +
sound/coldfire/Makefile | 6 +
sound/coldfire/coldfire-codec-spi.c | 93 ++
sound/coldfire/snd-coldfire.c | 1664 +++++++++++++++++++++++++++++++++++
sound/coldfire/snd-coldfire.h | 15 +
7 files changed, 1795 insertions(+), 4 deletions(-)
create mode 100644 sound/coldfire/Kconfig
create mode 100644 sound/coldfire/Makefile
create mode 100644 sound/coldfire/coldfire-codec-spi.c
create mode 100644 sound/coldfire/snd-coldfire.c
create mode 100644 sound/coldfire/snd-coldfire.h
--- a/sound/Kconfig
+++ b/sound/Kconfig
@@ -59,8 +59,6 @@ config SOUND_OSS_CORE_PRECLAIM
source "sound/oss/dmasound/Kconfig"
-if !M68K
-
menuconfig SND
tristate "Advanced Linux Sound Architecture"
help
@@ -85,6 +83,8 @@ source "sound/aoa/Kconfig"
source "sound/arm/Kconfig"
+source "sound/coldfire/Kconfig"
+
source "sound/atmel/Kconfig"
source "sound/spi/Kconfig"
@@ -121,8 +121,6 @@ source "sound/oss/Kconfig"
endif # SOUND_PRIME
-endif # !M68K
-
endif # SOUND
# AC97_BUS is used from both sound and ucb1400
--- a/sound/Makefile
+++ b/sound/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_DMASOUND) += oss/
obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ sh/ synth/ usb/ \
sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/
obj-$(CONFIG_SND_AOA) += aoa/
+obj-$(CONFIG_SND_COLDFIRE) += coldfire/
# This one must be compilable even if sound is configured out
obj-$(CONFIG_AC97_BUS) += ac97_bus.o
--- /dev/null
+++ b/sound/coldfire/Kconfig
@@ -0,0 +1,14 @@
+
+menu "ALSA for Coldfire"
+
+config SND_COLDFIRE
+ bool "Coldfire sound devices"
+ depends on SND
+ select SND_PCM
+ select SSIAUDIO_USE_EDMA
+ default y
+ help
+ Support for sound devices specific to Coldfire architectures.
+
+endmenu
+
--- /dev/null
+++ b/sound/coldfire/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for Coldfire ALSA
+#
+
+obj-y += snd-coldfire.o coldfire-codec-spi.o
+
--- /dev/null
+++ b/sound/coldfire/coldfire-codec-spi.c
@@ -0,0 +1,93 @@
+/*
+ * linux/sound/coldfire/coldfire-codec-spi.c
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Author: Kurt Mahan <kmahan@freescale.com>
+ *
+ * Simple SPI interface for the CODEC.
+ *
+ * This 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.
+ */
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/spi/spi.h>
+#include <linux/kernel.h>
+#include <asm/mcfsim.h>
+#include <asm/coldfire.h>
+#include <linux/delay.h>
+
+#define MCF_CODEC_SPI_DRIVER_NAME "mcf_codec_spi"
+
+static struct spi_device *mcf_codec_spi;
+
+/*
+ * Write CODEC register via SPI
+ */
+int mcf_codec_spi_write(u8 addr, u16 data)
+{
+ u16 spi_word;
+
+ if (mcf_codec_spi == NULL)
+ return -ENODEV;
+
+ spi_word = ((addr & 0x7F)<<9)|(data & 0x1FF);
+ return spi_write(mcf_codec_spi, (const u8 *)&spi_word,
+ sizeof(spi_word));
+}
+EXPORT_SYMBOL(mcf_codec_spi_write);
+
+static int __devinit mcf_codec_spi_probe(struct spi_device *spi)
+{
+ spi->dev.power.power_state = PMSG_ON;
+ mcf_codec_spi = spi;
+
+ return 0;
+}
+
+static int __devexit mcf_codec_spi_remove(struct spi_device *spi)
+{
+ return 0;
+}
+
+static int mcf_codec_spi_suspend(struct spi_device *spi, pm_message_t message)
+{
+ return 0;
+}
+
+static int mcf_codec_spi_resume(struct spi_device *spi)
+{
+ return 0;
+}
+
+static struct spi_driver mcf_codec_spi_driver = {
+ .driver = {
+ .name = MCF_CODEC_SPI_DRIVER_NAME,
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = mcf_codec_spi_probe,
+ .remove = __devexit_p(mcf_codec_spi_remove),
+ .suspend = mcf_codec_spi_suspend,
+ .resume = mcf_codec_spi_resume,
+};
+
+static int __init mcf_codec_spi_init(void)
+{
+ return spi_register_driver(&mcf_codec_spi_driver);
+}
+module_init(mcf_codec_spi_init);
+
+static void __exit mcf_codec_spi_exit(void)
+{
+ spi_unregister_driver(&mcf_codec_spi_driver);
+}
+module_exit(mcf_codec_spi_exit);
+
+
+MODULE_DESCRIPTION("Coldfire Codec SPI driver");
+MODULE_AUTHOR("Kurt Mahan, Freescale Semiconductor, Inc.");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/sound/coldfire/snd-coldfire.c
@@ -0,0 +1,1664 @@
+/*
+ * linux/sound/coldfire/snd-coldfire.c
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Author: York Sun <r58495@freescale.com>
+ * Alison Wang <b18965@freescale.com>
+ *
+ * Coldfire ALSA driver based on SSI and TLV320A
+ *
+ * This 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.
+ *
+ ***************************************************************************
+ *
+ * NOTE: This driver was tested on MCF5445x, MCF5301x, MCF5227x, MCF532x and
+ * MCF537x platforms.
+ * */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+#include <linux/ioctl.h>
+#include <linux/soundcard.h>
+#include <linux/spi/spi.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+
+#include <asm/mcfsim.h>
+#include <asm/coldfire.h>
+#include <asm/mcf_edma.h>
+#include "snd-coldfire.h"
+
+#if defined(CONFIG_M5445X)
+#include <asm/mcf5445x_ssi.h>
+#endif
+
+#define CF_ALSA_DEBUG 0
+#if CF_ALSA_DEBUG
+#define DBG(fmt, args...) printk(KERN_INFO "[%s] " fmt , \
+ __func__, ## args)
+#else
+#define DBG(fmt, args...) do {} while (0)
+#endif
+
+#define SOUND_CARD_NAME "Coldfire ALSA"
+#define MAX_BUFFER_SIZE (32*1024)
+
+/* eDMA channel for SSI channel 0,1 TX,RX */
+#define DMA_TX_TCD0 MCF_EDMA_CHAN_TIMER2
+#define DMA_TX_TCD1 MCF_EDMA_CHAN_TIMER3
+#define DMA_RX_TCD0 MCF_EDMA_CHAN_TIMER0
+#define DMA_RX_TCD1 MCF_EDMA_CHAN_TIMER1
+
+#define CODEC_LEFT_IN_REG (0x00)
+#define CODEC_RIGHT_IN_REG (0x01)
+#define CODEC_LEFT_HP_VOL_REG (0x02)
+#define CODEC_RIGHT_HP_VOL_REG (0x03)
+#define CODEC_ANALOG_APATH_REG (0x04)
+#define CODEC_DIGITAL_APATH_REG (0x05)
+#define CODEC_POWER_DOWN_REG (0x06)
+#define CODEC_DIGITAL_IF_FMT_REG (0x07)
+#define CODEC_SAMPLE_RATE_REG (0x08)
+#define CODEC_DIGITAL_IF_ACT_REG (0x09)
+#define CODEC_RESET_REG (0x0f)
+
+#define TLV320AIC23_CODEC_SAMPLE_RATE_REG (0x08)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_8KHZ (0x0C)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_11KHZ (0x0C)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_16KHZ (0x58)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_22KHZ (0x62)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_44KHZ (0x22)
+#define TLV320AIC23_CODEC_SAMPLERATE_REG_48KHZ (0x00)
+
+#define MCF_SSI_AUDIO_IRQ_LEVEL (5)
+#define TLV320A_VOL_MAX 0x07F
+#define TLV320A_VOL_MIN 0x030
+#define TLV320A_VOL_INIT 0x065
+#define TLV320A_LINEIN_MAX 0x1F
+#define TLV320A_LINEIN_INIT 0x17
+#define TLV320A_ANALOGPATH_INIT 0x11
+
+/* Codec settings */
+#define MCF_SSI_AUDIO_MCLK_1 (12288000U) /*Hz*/
+#define MCF_SSI_AUDIO_MCLK_2 (16934400U) /*Hz*/
+#define MCF_SSI_AUDIO_MCLK_3 (14112000U) /*Hz*/
+#define MCF_SSI_AUDIO_MCLK_4 (18432000U) /*Hz*/
+
+#define MCF_SSI_AUDIO_SSDIV_VALUE_1 \
+ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_1)+ \
+ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_1)%10) > 5))
+
+#define MCF_SSI_AUDIO_SSDIV_VALUE_2 \
+ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_2)+ \
+ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_2)%10) > 5))
+
+#define MCF_SSI_AUDIO_SSDIV_VALUE_3 \
+ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_3)+ \
+ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_3)%10) > 5))
+
+#define MCF_SSI_AUDIO_SSDIV_VALUE_4 \
+ ((((u32)MCF_CLK*2)/MCF_SSI_AUDIO_MCLK_4)+ \
+ (((((u32)MCF_CLK*2*10)/MCF_SSI_AUDIO_MCLK_4)%10) > 5))
+
+#define SNDRV_COLDFIRE_PCM_PLAYBACK_FORMATS SNDRV_PCM_FMTBIT_S16_BE
+#define SNDRV_COLDFIRE_PCM_CAPTURE_FORMATS SNDRV_PCM_FMTBIT_S16_BE
+
+#define RXFWM 2
+#define TXFWM 2
+#define HW_PERIODS_BYTES_MIN 4096
+#define HW_PERIODS_BYTES_STEP 4096
+
+#define INPUT_MICROPHONE 0
+#define INPUT_LINEIN 1
+#define NUM_TCDS 4
+
+static char *id;
+static struct platform_device *device;
+static int g_tx_dmaing;
+static int g_rx_dmaing;
+static unsigned char g_mastervol, g_lineinvol, g_analogpath;
+
+/** Use 4 TCDs for scatter/gather address
+ * to setup dma chain, one TCD per period
+ * so that we don't need change them on the fly
+ */
+
+/**
+ * Link Descriptor
+ *
+ * must be aligned on a 32-byte boundary.
+ */
+struct dma_tcd {
+ __be32 saddr; /* source address */
+ __be16 attr; /* transfer attribute */
+ __be16 soffset; /* source offset */
+ __be32 nbytes; /* minor byte count */
+ __be32 slast; /* last source address adjust */
+ __be32 daddr; /* dest address */
+ __be16 citer; /* current minor looplink, major count */
+ __be16 doffset; /* dest offset */
+ __be32 dlast_sga; /* last dest addr adjust, scatter/gather addr*/
+ __be16 biter; /* begging minor looklink, major count */
+ __be16 csr; /* control and status */
+} __packed;
+
+/** dma_private: p-substream DMA data
+ *
+ * The tcd[] array is first because it needs to be aligned on a 32-byte
+ * boundary, so putting it first will ensure alignment without padding the
+ * structure.
+ *
+ * @tcd[]: array of TCDs
+ */
+struct dma_private {
+ struct dma_tcd tcd0[NUM_TCDS];
+ struct dma_tcd tcd1[NUM_TCDS];
+ dma_addr_t tcd_buf_phys; /* physical address of dma_private */
+ dma_addr_t dma_buf_phys;
+ dma_addr_t dma_buf_next;
+ dma_addr_t dma_buf_end;
+ size_t period_size;
+ unsigned int num_periods;
+};
+
+struct tlv320a_audio_device {
+ struct spi_device *spi;
+ u32 speed;
+ u32 stereo;
+ u32 bits;
+ u32 format;
+ u8 isopen;
+ u8 dmaing;
+ u8 ssi_enabled;
+ u8 channel;
+ spinlock_t lock;
+ u8 *audio_buf;
+};
+
+/* chip specific define */
+struct chip_spec {
+ struct snd_card *card;
+ struct snd_pcm *pcm;
+ struct tlv320a_audio_device *audio_device;
+ u32 offset;
+ void *mixer_data;
+};
+
+/* hardware definition */
+static struct snd_pcm_hardware snd_coldfire_playback_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED |
+#if defined(CONFIG_MMU)
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID|
+#endif
+ SNDRV_PCM_INFO_BLOCK_TRANSFER),
+ .formats = SNDRV_COLDFIRE_PCM_PLAYBACK_FORMATS,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_min = HW_PERIODS_BYTES_MIN,
+ .period_bytes_max = MAX_BUFFER_SIZE/NUM_TCDS,
+ .periods_min = NUM_TCDS,
+ .periods_max = NUM_TCDS,
+ .fifo_size = 0,
+};
+
+/* hardware definition */
+static struct snd_pcm_hardware snd_coldfire_capture_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED |
+#if defined(CONFIG_MMU)
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID|
+#endif
+ SNDRV_PCM_INFO_BLOCK_TRANSFER),
+ .formats = SNDRV_COLDFIRE_PCM_CAPTURE_FORMATS,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_min = HW_PERIODS_BYTES_MIN,
+ .period_bytes_max = MAX_BUFFER_SIZE/NUM_TCDS,
+ .periods_min = NUM_TCDS,
+ .periods_max = NUM_TCDS,
+ .fifo_size = 0,
+};
+
+static unsigned int rates[] = {8000, 11025, 16000, 22000,
+ 22050, 44000, 44100, 48000};
+
+/* hw constraints */
+static struct snd_pcm_hw_constraint_list constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+static inline void ssi_audio_dma_playback_start(void)
+{
+ g_tx_dmaing = 1;
+ mcf_edma_start_transfer(DMA_TX_TCD0);
+ mcf_edma_start_transfer(DMA_TX_TCD1);
+}
+
+static inline void ssi_audio_dma_capture_start(void)
+{
+ g_rx_dmaing = 1;
+ mcf_edma_start_transfer(DMA_RX_TCD0);
+ mcf_edma_start_transfer(DMA_RX_TCD1);
+}
+
+static inline void ssi_audio_dma_playback_stop(void)
+{
+ g_tx_dmaing = 0;
+ mcf_edma_stop_transfer(DMA_TX_TCD0);
+ mcf_edma_stop_transfer(DMA_TX_TCD1);
+}
+
+inline void ssi_audio_dma_capture_stop(void)
+{
+ g_rx_dmaing = 0;
+ mcf_edma_stop_transfer(DMA_RX_TCD0);
+ mcf_edma_stop_transfer(DMA_RX_TCD1);
+}
+
+/**
+ * fill_tcd_params - Fill transfer control descriptor (TCD)
+ * @base: base address of TCD
+ * @source: source address
+ * @dest: destination address
+ * @attr: attributes
+ * @soff: source offset
+ * @nbytes: number of bytes to be transfered in minor loop
+ * @slast: last source address adjustment
+ * @citer: major loop count
+ * @biter: beginning minor loop count
+ * @doff: destination offset
+ * @dlast_sga: last destination address adjustment
+ * @major_int: generate interrupt after each major loop
+ * @disable_req: disable DMA request after major loop
+ * @enable_sg: enable scatter/gather address
+ */
+void fill_tcd_params(u32 base, u32 source, u32 dest,
+ u32 attr, u32 soff, u32 nbytes, u32 slast,
+ u32 citer, u32 biter, u32 doff, u32 dlast_sga,
+ int major_int, int disable_req, int enable_sg)
+{
+ struct dma_tcd *tcd = (struct dma_tcd *) base;
+
+ tcd->saddr = source;
+ tcd->attr = attr;
+ tcd->soffset = soff;
+ tcd->nbytes = nbytes;
+ tcd->slast = slast;
+ tcd->daddr = dest;
+ tcd->citer = citer & 0x7fff;
+ tcd->doffset = doff;
+ tcd->dlast_sga = dlast_sga;
+ tcd->biter = biter & 0x7fff;
+ tcd->csr = ((major_int) ? 0x2 : 0) |
+ ((disable_req) ? 0x8 : 0) |
+ ((enable_sg) ? 0x10 : 0);
+}
+
+static int
+ssi_audio_dma_playback_config(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private = runtime->private_data;
+ u32 size = frames_to_bytes(runtime, runtime->period_size);
+ u32 offset, soffset, daddr0, daddr1, attr, sga0, sga1;
+ u32 i, nbyte, major_loops;
+
+ if ((runtime->channels < 1) || (runtime->channels > 2)) {
+ printk(KERN_ERR "Error on channels = %d\n", runtime->channels);
+ return -EINVAL;
+ }
+
+ dma_private->dma_buf_phys = runtime->dma_addr;
+ dma_private->dma_buf_next = dma_private->dma_buf_phys;
+ dma_private->dma_buf_end = dma_private->dma_buf_phys +
+ runtime->periods * size;
+
+ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE) {
+ nbyte = 2 * TXFWM;
+ soffset = 2 * runtime->channels;
+ daddr0 = (u32)&MCF_SSI_TX0 + 2;
+ daddr1 = (u32)&MCF_SSI_TX1 + 2;
+ attr = MCF_EDMA_TCD_ATTR_SSIZE_16BIT |
+ MCF_EDMA_TCD_ATTR_DSIZE_16BIT;
+ } else {
+ printk(KERN_ERR "Not supported PCM format %x\n",
+ runtime->format);
+ return -EINVAL;
+ }
+
+ major_loops = size/nbyte/runtime->channels;
+ sga0 = (u32)dma_private->tcd_buf_phys;
+ sga1 = (u32)dma_private->tcd_buf_phys +
+ 4 * sizeof(struct dma_tcd);
+
+#if defined(CONFIG_M5301x) || defined(CONFIG_M5445X)
+ MCF_EDMA_TCD10_CSR = 0;
+ MCF_EDMA_TCD11_CSR = 0;
+#else
+ MCF_EDMA_TCD11_CSR = 0;
+ MCF_EDMA_TCD12_CSR = 0;
+#endif
+ offset = (runtime->channels - 1) * 2;
+ mcf_edma_set_tcd_params(DMA_TX_TCD0,
+ (u32)dma_private->dma_buf_next,
+ daddr0,
+ attr,
+ soffset,
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ 0, /* dest offset */
+ sga0,
+ 1, /* major_int */
+ 0); /* enable dma request after */
+
+ mcf_edma_set_tcd_params(DMA_TX_TCD1,
+ (u32)dma_private->dma_buf_next + offset,
+ daddr1,
+ attr,
+ soffset,
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ 0, /* dest offset */
+ sga1,
+ 0, /* major_int */
+ 0); /* enable dma request after */
+
+ while (!(MCF_EDMA_TCD_CSR(DMA_TX_TCD0) & MCF_EDMA_TCD_CSR_E_SG))
+ MCF_EDMA_TCD_CSR(DMA_TX_TCD0) |= MCF_EDMA_TCD_CSR_E_SG;
+ while (!(MCF_EDMA_TCD_CSR(DMA_TX_TCD1) & MCF_EDMA_TCD_CSR_E_SG))
+ MCF_EDMA_TCD_CSR(DMA_TX_TCD1) |= MCF_EDMA_TCD_CSR_E_SG;
+
+ for (i = 0; i < NUM_TCDS; i++) {
+ dma_private->dma_buf_next += size;
+ if (dma_private->dma_buf_next >= dma_private->dma_buf_end)
+ dma_private->dma_buf_next = dma_private->dma_buf_phys;
+ sga0 = (u32)dma_private->tcd_buf_phys +
+ ((i+1)%NUM_TCDS) * sizeof(struct dma_tcd);
+ sga1 = (u32)dma_private->tcd_buf_phys +
+ ((i+1)%NUM_TCDS + 4) * sizeof(struct dma_tcd);
+ DBG("sga0 = 0x%x, sga1 = 0x%x.\n", sga0, sga1);
+ fill_tcd_params((u32)&dma_private->tcd0[i],
+ (u32)dma_private->dma_buf_next,
+ daddr0,
+ attr,
+ soffset,
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ 0, /* dest offset */
+ sga0,
+ 1, /* major_int */
+ 0, /* enable dma request after */
+ 1); /* enable scatter/gather */
+
+ fill_tcd_params((u32)&dma_private->tcd1[i],
+ (u32)dma_private->dma_buf_next + offset,
+ daddr1,
+ attr,
+ soffset,
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ 0, /* dest offset */
+ sga1,
+ 0, /* major_int */
+ 0, /* enable dma request after */
+ 1); /* enable scatter/gather */
+ }
+
+ return 0;
+}
+
+static int
+ssi_audio_dma_capture_config(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private = runtime->private_data;
+ u32 size = frames_to_bytes(runtime, runtime->period_size);
+ u32 offset, saddr0, saddr1, doffset, attr, sga0, sga1;
+ int i, nbyte, major_loops;
+
+ if ((runtime->channels < 1) || (runtime->channels > 2)) {
+ printk(KERN_ERR "Error on channels = %d\n", runtime->channels);
+ return -EINVAL;
+ }
+
+ dma_private->dma_buf_phys = runtime->dma_addr;
+ dma_private->dma_buf_next = dma_private->dma_buf_phys;
+ dma_private->dma_buf_end = dma_private->dma_buf_phys +
+ runtime->periods * size;
+
+ switch (runtime->format) {
+ case SNDRV_PCM_FORMAT_S16_BE:
+ saddr0 = (u32)&MCF_SSI_RX0 + 2;
+ saddr1 = (u32)&MCF_SSI_RX1 + 2;
+ nbyte = 2 * RXFWM;
+ doffset = 2 * runtime->channels;
+ attr = MCF_EDMA_TCD_ATTR_SSIZE_16BIT |
+ MCF_EDMA_TCD_ATTR_DSIZE_16BIT;
+ break;
+ default:
+ printk(KERN_ERR "Not supported PCM format %x\n",
+ runtime->format);
+ return -EINVAL;
+ }
+
+ major_loops = size/nbyte/runtime->channels;
+ sga0 = (u32)dma_private->tcd_buf_phys;
+ sga1 = (u32)dma_private->tcd_buf_phys +
+ 4 * sizeof(struct dma_tcd);
+
+#if defined(CONFIG_M5301x) || defined(CONFIG_M5445X)
+ MCF_EDMA_TCD8_CSR = 0;
+ MCF_EDMA_TCD9_CSR = 0;
+#else
+ MCF_EDMA_TCD9_CSR = 0;
+ MCF_EDMA_TCD10_CSR = 0;
+#endif
+ offset = (runtime->channels - 1) * 2;
+ mcf_edma_set_tcd_params(DMA_RX_TCD0,
+ saddr0,
+ (u32)dma_private->dma_buf_next,
+ attr,
+ 0, /* source offset */
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ doffset,
+ sga0,
+ 1, /* major_int */
+ 0); /* enable dma request after */
+
+ mcf_edma_set_tcd_params(DMA_RX_TCD1,
+ saddr1,
+ (u32)dma_private->dma_buf_next + offset,
+ attr,
+ 0, /* source offset */
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ doffset,
+ sga1,
+ 0, /* major_int */
+ 0); /* enable dma request after */
+
+ while (!(MCF_EDMA_TCD_CSR(DMA_RX_TCD0) & MCF_EDMA_TCD_CSR_E_SG))
+ MCF_EDMA_TCD_CSR(DMA_RX_TCD0) |= MCF_EDMA_TCD_CSR_E_SG;
+ while (!(MCF_EDMA_TCD_CSR(DMA_RX_TCD1) & MCF_EDMA_TCD_CSR_E_SG))
+ MCF_EDMA_TCD_CSR(DMA_RX_TCD1) |= MCF_EDMA_TCD_CSR_E_SG;
+
+ for (i = 0; i < NUM_TCDS; i++) {
+ dma_private->dma_buf_next += size;
+ if (dma_private->dma_buf_next >= dma_private->dma_buf_end)
+ dma_private->dma_buf_next = dma_private->dma_buf_phys;
+ sga0 = (u32)dma_private->tcd_buf_phys +
+ ((i+1)%NUM_TCDS) * sizeof(struct dma_tcd);
+ sga1 = (u32)dma_private->tcd_buf_phys +
+ ((i+1)%NUM_TCDS + 4) * sizeof(struct dma_tcd);
+ fill_tcd_params((u32)&dma_private->tcd0[i],
+ saddr0,
+ (u32)dma_private->dma_buf_next,
+ attr,
+ 0, /* source offset */
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ doffset,
+ sga0,
+ 1, /* major_int */
+ 0, /* enable dma request after */
+ 1); /* enable scatter/gather */
+ fill_tcd_params((u32)&dma_private->tcd1[i],
+ saddr1,
+ (u32)dma_private->dma_buf_next + offset,
+ attr,
+ 0, /* source offset */
+ nbyte,
+ 0, /* slast */
+ major_loops, /* citer */
+ major_loops, /* biter */
+ doffset,
+ sga1,
+ 0, /* major_int */
+ 0, /* enable dma request after */
+ 1); /* enable scatter/gather */
+ }
+ return 0;
+}
+
+static inline void ssi_audio_enable_ssi_playback(void)
+{
+ MCF_SSI_CR |= MCF_SSI_CR_SSI_EN | MCF_SSI_CR_TE;
+}
+
+static inline void ssi_audio_enable_ssi_capture(void)
+{
+ MCF_SSI_CR |= MCF_SSI_CR_SSI_EN | MCF_SSI_CR_RE;
+}
+
+static inline void ssi_audio_disable_ssi(void)
+{
+ MCF_SSI_CR &= ~(MCF_SSI_CR_TE | MCF_SSI_CR_RE | MCF_SSI_CR_SSI_EN);
+}
+
+static inline void ssi_audio_disable_ssi_playback(void)
+{
+ MCF_SSI_CR &= ~MCF_SSI_CR_TE;
+}
+
+static inline void ssi_audio_disable_ssi_capture(void)
+{
+ MCF_SSI_CR &= ~MCF_SSI_CR_RE;
+}
+
+static irqreturn_t ssi_audio_dma_playback_handler(int channel, void *dev_id)
+{
+ struct snd_pcm_substream *substream;
+ struct snd_pcm_runtime *runtime;
+
+ substream = (struct snd_pcm_substream *)dev_id;
+ runtime = substream->runtime;
+
+ /* inform ALSA middle layer about transfer status */
+ snd_pcm_period_elapsed(substream);
+ mcf_edma_confirm_interrupt_handled(DMA_TX_TCD0);
+ mcf_edma_confirm_interrupt_handled(DMA_TX_TCD1);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t ssi_audio_dma_capture_handler(int channel, void *dev_id)
+{
+ struct snd_pcm_substream *substream;
+ struct snd_pcm_runtime *runtime;
+
+ substream = (struct snd_pcm_substream *)dev_id;
+ runtime = substream->runtime;
+
+ /* inform ALSA middle layer about transfer status */
+ snd_pcm_period_elapsed(substream);
+ mcf_edma_confirm_interrupt_handled(DMA_RX_TCD0);
+ mcf_edma_confirm_interrupt_handled(DMA_RX_TCD1);
+
+ return IRQ_HANDLED;
+}
+
+int ssi_audio_dma_request_playback_channel(struct snd_pcm_substream *substream)
+{
+ int err;
+ struct chip_spec *chip = snd_pcm_substream_chip(substream);
+
+ /* request eDMA channel */
+ err = mcf_edma_request_channel(DMA_TX_TCD0,
+ ssi_audio_dma_playback_handler,
+ NULL,
+ MCF_SSI_AUDIO_IRQ_LEVEL,
+ substream,
+ &(chip->audio_device->lock),
+ id);
+ if (err < 0)
+ return err;
+ err = mcf_edma_request_channel(DMA_TX_TCD1,
+ ssi_audio_dma_playback_handler,
+ NULL,
+ MCF_SSI_AUDIO_IRQ_LEVEL,
+ substream,
+ &(chip->audio_device->lock),
+ id);
+ return err;
+}
+
+int ssi_audio_dma_request_capture_channel(struct snd_pcm_substream *substream)
+{
+ int err;
+ struct chip_spec *chip = snd_pcm_substream_chip(substream);
+
+ /* request 2 eDMA channels for two fifo */
+ err = mcf_edma_request_channel(DMA_RX_TCD0,
+ ssi_audio_dma_capture_handler,
+ NULL,
+ MCF_SSI_AUDIO_IRQ_LEVEL,
+ substream,
+ &(chip->audio_device->lock),
+ id);
+ if (err < 0)
+ return err;
+ err = mcf_edma_request_channel(DMA_RX_TCD1,
+ ssi_audio_dma_capture_handler,
+ NULL,
+ MCF_SSI_AUDIO_IRQ_LEVEL,
+ substream,
+ &(chip->audio_device->lock),
+ id);
+ return err;
+}
+
+static inline void ssi_audio_init_dma(void)
+{
+ /* SSI DMA Signals mapped to DMA request */
+ MCF_CCM_MISCCR &= ~MCF_CCM_MISCCR_TIM_DMA;
+}
+
+static void ssi_audio_adjust_codec_speed(struct snd_pcm_substream *substream)
+{
+ ssi_audio_disable_ssi();
+
+ if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_BE) {
+ MCF_SSI_CCR = MCF_SSI_CCR_WL(7) | /* 16 bit word length */
+ MCF_SSI_CCR_DC(1); /* Frame rate divider */
+ }
+
+ switch (substream->runtime->rate) {
+ case 8000:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR | MCF_CCM_CDR_SSIDIV(0x20))
+ | MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
+#endif
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(11);
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_8KHZ);
+ break;
+ case 11000:
+ case 11025:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
+ MCF_CCM_CDR_SSIDIV(0x2B);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(11);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_3);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(9);
+#endif
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_11KHZ);
+ break;
+ case 16000:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR | MCF_CCM_CDR_SSIDIV(0x20))
+ | MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
+#endif
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(5);
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_16KHZ);
+ break;
+ case 22000:
+ case 22050:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
+ MCF_CCM_CDR_SSIDIV(0x2B);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(5);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_3);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(4);
+#endif
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_22KHZ);
+ break;
+ case 48000:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_4);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(3);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_1);
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(1);
+#endif
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_48KHZ);
+ break;
+ case 44000:
+ case 44100:
+ default:
+#if defined(CONFIG_M532x) || defined(CONFIG_M537x)
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0x3F)) |
+ MCF_CCM_CDR_SSIDIV(0x2B);
+#else
+ MCF_CCM_CDR = (MCF_CCM_CDR & ~MCF_CCM_CDR_SSIDIV(0xFF)) |
+ MCF_CCM_CDR_SSIDIV(MCF_SSI_AUDIO_SSDIV_VALUE_2);
+#endif
+ MCF_SSI_CCR |= MCF_SSI_CCR_PM(2);
+ mcf_codec_spi_write(TLV320AIC23_CODEC_SAMPLE_RATE_REG,
+ TLV320AIC23_CODEC_SAMPLERATE_REG_44KHZ);
+ break;
+ }
+ DBG("MCF_CCM_CDR = 0x%x, MCF_SSI_CCR = 0x%x.\n",
+ MCF_CCM_CDR, MCF_SSI_CCR);
+}
+
+static void ssi_audio_codec_reset(void)
+{
+ mcf_codec_spi_write(CODEC_RESET_REG, 0); /* reset the audio chip */
+ udelay(2500); /* wait for reset */
+}
+
+static void
+ssi_audio_init_codec_for_playback(struct snd_pcm_substream *substream)
+{
+ mcf_codec_spi_write(CODEC_LEFT_IN_REG, g_lineinvol);
+ mcf_codec_spi_write(CODEC_RIGHT_IN_REG, g_lineinvol);
+ mcf_codec_spi_write(CODEC_POWER_DOWN_REG, 0x060);
+ mcf_codec_spi_write(CODEC_DIGITAL_IF_FMT_REG, 0x02);
+ mcf_codec_spi_write(CODEC_DIGITAL_APATH_REG, 0x006);
+ mcf_codec_spi_write(CODEC_DIGITAL_IF_ACT_REG, 0x001);
+ mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, g_analogpath);
+ mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, g_mastervol);
+ mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, g_mastervol);
+}
+
+static void
+ssi_audio_init_codec_for_capture(struct snd_pcm_substream *substream)
+{
+ mcf_codec_spi_write(CODEC_LEFT_IN_REG, g_lineinvol);
+ mcf_codec_spi_write(CODEC_RIGHT_IN_REG, g_lineinvol);
+ mcf_codec_spi_write(CODEC_POWER_DOWN_REG, 0x060);
+ mcf_codec_spi_write(CODEC_DIGITAL_IF_FMT_REG, 0x02);
+ mcf_codec_spi_write(CODEC_DIGITAL_APATH_REG, 0x006);
+ mcf_codec_spi_write(CODEC_DIGITAL_IF_ACT_REG, 0x001);
+ mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, g_analogpath);
+ mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, g_mastervol);
+ mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, g_mastervol);
+}
+
+static void ssi_audio_chip_init(void)
+{
+ int chip_initialized = 0;
+ if (chip_initialized == 1)
+ return;
+
+ ssi_audio_init_dma();
+ /* Enable the SSI pins */
+#if defined(CONFIG_M5227x)
+ MCF_GPIO_PAR_UART = (MCF_GPIO_PAR_UART
+ &~MCF_GPIO_PAR_UART_PAR_U1TXD(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_U1RXD(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_U1RTS(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_U1CTS(0xF))
+ | MCF_GPIO_PAR_UART_PAR_U1CTS_SSI_BCLK
+ | MCF_GPIO_PAR_UART_PAR_U1RTS_SSI_FS
+ | MCF_GPIO_PAR_UART_PAR_U1RXD_SSI_RXD
+ | MCF_GPIO_PAR_UART_PAR_U1TXD_SSI_TXD;
+
+ MCF_GPIO_PAR_TIMER = (MCF_GPIO_PAR_TIMER
+ &~MCF_GPIO_PAR_TIMER_PAR_T3IN(0xF))
+ | MCF_GPIO_PAR_TIMER_PAR_T3IN_SSI_MCLK;
+#endif
+#if defined(CONFIG_M532x)
+ MCF_GPIO_PAR_SSI = (0
+ | MCF_GPIO_PAR_SSI_PAR_MCLK
+ | MCF_GPIO_PAR_SSI_PAR_TXD(3)
+ | MCF_GPIO_PAR_SSI_PAR_RXD(3)
+ | MCF_GPIO_PAR_SSI_PAR_FS(3)
+ | MCF_GPIO_PAR_SSI_PAR_BCLK(3));
+#endif
+#if defined(CONFIG_M537x)
+ MCF_GPIO_PAR_UART = (MCF_GPIO_PAR_UART
+ &~MCF_GPIO_PAR_UART_PAR_UTXD1(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_URXD1(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_URTS1(0xF)
+ &~MCF_GPIO_PAR_UART_PAR_UCTS1(0xF))
+ | MCF_GPIO_PAR_UART_PAR_UCTS1_SSI_BCLK
+ | MCF_GPIO_PAR_UART_PAR_URTS1_SSI_FS
+ | MCF_GPIO_PAR_UART_PAR_URXD1_SSI_RXD
+ | MCF_GPIO_PAR_UART_PAR_UTXD1_SSI_TXD;
+
+ MCF_GPIO_PAR_IRQ = MCF_GPIO_PAR_IRQ_PAR_IRQ4(1);
+#endif
+#if defined(CONFIG_M5301x)
+ MCF_GPIO_PAR_SSIH = (MCF_GPIO_PAR_SSIH_PAR_RXD_SSI_RXD |
+ MCF_GPIO_PAR_SSIH_PAR_TXD_SSI_TXD |
+ MCF_GPIO_PAR_SSIH_PAR_FS_SSI_FS |
+ MCF_GPIO_PAR_SSIH_PAR_MCLK_SSI_MCLK);
+ MCF_GPIO_PAR_SSIL = MCF_GPIO_PAR_SSIL_PAR_BCLK_SSI_BCLK;
+#endif
+#if defined(CONFIG_M5445X)
+ MCF_GPIO_PAR_SSI = (MCF_GPIO_PAR_SSI_MCLK |
+ MCF_GPIO_PAR_SSI_STXD_STXD |
+ MCF_GPIO_PAR_SSI_SRXD_SRXD |
+ MCF_GPIO_PAR_SSI_FS_FS |
+ MCF_GPIO_PAR_SSI_BCLK_BCLK);
+#endif
+ chip_initialized = 1;
+}
+
+static void ssi_audio_init_ssi_playback(void)
+{
+ /* Issue a SSI reset */
+ MCF_SSI_CR &= ~MCF_SSI_CR_SSI_EN;
+
+ /* SSI module uses internal CPU clock */
+ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_SRC;
+#if defined(CONFIG_M5445X) || defined(CONFIG_M532x) || defined(CONFIG_M537x) \
+ || defined(CONFIG_M5227x)
+ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_PUE | MCF_CCM_MISCCR_SSI_PUS;
+#endif
+#if defined(CONFIG_M5301x)
+ MCF_GPIO_PCRH |= MCF_GPIO_PCRH_SSI_PUS | MCF_GPIO_PCRH_SSI_PUE;
+#endif
+ MCF_SSI_CR = MCF_SSI_CR_CIS |
+ MCF_SSI_CR_TCH | /* Enable two channel mode */
+ MCF_SSI_CR_MCE | /* clock out on SSI_MCLK pin */
+ MCF_SSI_CR_I2S_MASTER | /* I2S master mode */
+ MCF_SSI_CR_SYN | /* Enable synchronous mode */
+ MCF_SSI_CR_NET; /* Auto set by I2S Master */
+
+ MCF_SSI_TCR = 0 |
+ /* internally generated bit clock */
+ MCF_SSI_TCR_TXDIR |
+ /* internally generated frame sync */
+ MCF_SSI_TCR_TFDIR |
+ /* Clock data on falling edge of bit clock */
+ MCF_SSI_TCR_TSCKP |
+ /* Frame sync active low */
+ MCF_SSI_TCR_TFSI |
+ /* TX frame sync 1 bit before data */
+ MCF_SSI_TCR_TEFS |
+ /* TX FIFO 0 enabled */
+ MCF_SSI_TCR_TFEN0 |
+ /* TX FIFO 1 enabled */
+ MCF_SSI_TCR_TFEN1 |
+ MCF_SSI_TCR_TXBIT0;
+
+ MCF_SSI_FCSR = MCF_SSI_FCSR_TFWM0(TXFWM) | MCF_SSI_FCSR_TFWM1(TXFWM);
+
+ MCF_SSI_IER = MCF_SSI_IER_TDMAE | /* DMA request enabled */
+ MCF_SSI_IER_TFE0 |
+ MCF_SSI_IER_TFE1; /* set by reset actually*/
+}
+
+static void ssi_audio_init_ssi_capture(void)
+{
+ /* Issue a SSI reset */
+ MCF_SSI_CR &= ~MCF_SSI_CR_SSI_EN;
+
+ /* SSI module uses internal CPU clock */
+ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_SRC;
+#if defined(CONFIG_M5445X) || defined(CONFIG_M532x) || defined(CONFIG_M537x) \
+ || defined(CONFIG_M5227x)
+ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_SSI_PUE | MCF_CCM_MISCCR_SSI_PUS;
+#endif
+#if defined(CONFIG_M5301x)
+ MCF_GPIO_PCRH |= MCF_GPIO_PCRH_SSI_PUS | MCF_GPIO_PCRH_SSI_PUE;
+#endif
+ MCF_SSI_CR = MCF_SSI_CR_CIS |
+ MCF_SSI_CR_TCH | /* Enable two channel mode */
+ MCF_SSI_CR_MCE | /* clock out on SSI_MCLK pin */
+ MCF_SSI_CR_I2S_MASTER | /* I2S master mode */
+ MCF_SSI_CR_SYN | /* Enable synchronous mode */
+ MCF_SSI_CR_NET; /* Auto set by I2S Master */
+
+ MCF_SSI_TCR = 0 |
+ /* internally generated bit clock */
+ MCF_SSI_TCR_TXDIR |
+ /* internally generated frame sync */
+ MCF_SSI_TCR_TFDIR |
+ /* Clock data on falling edge of bit clock */
+ MCF_SSI_TCR_TSCKP |
+ /* Frame sync active low */
+ MCF_SSI_TCR_TFSI |
+ /* TX frame sync 1 bit before data */
+ MCF_SSI_TCR_TEFS |
+ /* TX FIFO 0 enabled */
+ MCF_SSI_TCR_TFEN0 |
+ /* TX FIFO 1 enabled */
+ MCF_SSI_TCR_TFEN1 |
+ MCF_SSI_TCR_TXBIT0;
+
+ MCF_SSI_RCR = 0 |
+ /* Clock data on rising edge of bit clock */
+ MCF_SSI_RCR_RSCKP |
+ /* Frame sync active low */
+ MCF_SSI_RCR_RFSI |
+ /* RX frame sync 1 bit before data */
+ MCF_SSI_RCR_REFS |
+ /* RX FIFO 0 enabled */
+ MCF_SSI_RCR_RFEN0 |
+ /* RX FIFO 1 enabled */
+ MCF_SSI_RCR_RFEN1 |
+ MCF_SSI_RCR_RXBIT0; /* Auto set by I2S Master */
+
+ MCF_SSI_FCSR = MCF_SSI_FCSR_RFWM0(RXFWM) | MCF_SSI_FCSR_RFWM1(RXFWM);
+
+ /* interrupts */
+ MCF_SSI_IER = MCF_SSI_IER_RDMAE | /* DMA request enabled */
+ MCF_SSI_IER_RFF0 | /* rx FIFO 0 full */
+ MCF_SSI_IER_RFF1; /* rx FIFO 1 full */
+}
+
+static int snd_coldfire_playback_open(struct snd_pcm_substream *substream)
+{
+ int err;
+ struct chip_spec *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private;
+ dma_addr_t tcd_buf_phys;
+
+ runtime->hw = snd_coldfire_playback_hw;
+ err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0) {
+ printk(KERN_ERR "invalid buffer size\n");
+ return err;
+ }
+ /* to make sure period_bytes is the multiple of size of minor loops */
+ err = snd_pcm_hw_constraint_step(runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+ HW_PERIODS_BYTES_STEP);
+ if (err < 0) {
+ printk(KERN_ERR "Error setting period_bytes step, "
+ "err=%d\n", err);
+ return err;
+ }
+ err = snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+ if (err < 0) {
+ printk(KERN_ERR "Error setting rate constraints, "
+ "err=%d\n", err);
+ return err;
+ }
+ ssi_audio_chip_init();
+ ssi_audio_init_ssi_playback();
+ ssi_audio_init_codec_for_playback(substream);
+ err = ssi_audio_dma_request_playback_channel(substream);
+ if (err < 0) {
+ printk(KERN_ERR "Error requesting dma channel, err=%d\n", err);
+ return err;
+ }
+
+ dma_private = dma_alloc_coherent(substream->pcm->dev,
+ sizeof(struct dma_private), &tcd_buf_phys, GFP_KERNEL);
+
+ if (!dma_private) {
+ dev_err(substream->pcm->card->dev,
+ "can't allocate DMA private data\n");
+ return -ENOMEM;
+ }
+
+ dma_private->tcd_buf_phys = tcd_buf_phys;
+ runtime->private_data = dma_private;
+
+ chip->offset = 0;
+ g_tx_dmaing = 0;
+ return 0;
+}
+
+static int snd_coldfire_capture_open(struct snd_pcm_substream *substream)
+{
+ int err;
+ struct chip_spec *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private;
+ dma_addr_t tcd_buf_phys;
+
+ runtime->hw = snd_coldfire_capture_hw;
+
+ err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0) {
+ printk(KERN_ERR "invalid buffer size\n");
+ return err;
+ }
+ /* to make sure period_bytes is the multiple of size of minor loops */
+ err = snd_pcm_hw_constraint_step(runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+ HW_PERIODS_BYTES_STEP);
+ if (err < 0) {
+ printk(KERN_ERR "Error setting period_bytes step, "
+ "err=%d\n", err);
+ return err;
+ }
+ err = snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+ if (err < 0) {
+ printk(KERN_ERR "Error setting pcm_hw_constraint_list, "
+ "err=%d\n", err);
+ return err;
+ }
+
+ ssi_audio_chip_init();
+ ssi_audio_init_ssi_capture();
+ ssi_audio_init_codec_for_capture(substream);
+ err = ssi_audio_dma_request_capture_channel(substream);
+ if (err < 0) {
+ printk(KERN_ERR "Error requesting dma channel, err=%d\n", err);
+ return err;
+ }
+
+ dma_private = dma_alloc_coherent(substream->pcm->dev,
+ sizeof(struct dma_private), &tcd_buf_phys, GFP_KERNEL);
+
+ if (!dma_private) {
+ dev_err(substream->pcm->card->dev,
+ "can't allocate DMA private data\n");
+ return -ENOMEM;
+ }
+ dma_private->tcd_buf_phys = tcd_buf_phys;
+ dma_private->dma_buf_phys = substream->dma_buffer.addr;
+
+ runtime->private_data = dma_private;
+
+ chip->offset = 0;
+ g_rx_dmaing = 0;
+ return 0;
+}
+
+static int snd_coldfire_playback_close(struct snd_pcm_substream *substream)
+{
+ struct dma_private *dma_private = substream->runtime->private_data;
+
+ ssi_audio_dma_playback_stop();
+ mcf_edma_free_channel(DMA_TX_TCD0, substream);
+ mcf_edma_free_channel(DMA_TX_TCD1, substream);
+ if (dma_private) {
+ dma_free_coherent(substream->pcm->dev,
+ sizeof(struct dma_private),
+ dma_private, dma_private->tcd_buf_phys);
+ substream->runtime->private_data = NULL;
+ }
+ ssi_audio_disable_ssi();
+ return 0;
+}
+
+static int snd_coldfire_capture_close(struct snd_pcm_substream *substream)
+{
+ struct dma_private *dma_private = substream->runtime->private_data;
+
+ ssi_audio_dma_capture_stop();
+ mcf_edma_free_channel(DMA_RX_TCD0, substream);
+ mcf_edma_free_channel(DMA_RX_TCD1, substream);
+ /* Deallocate the fsl_dma_private structure */
+ if (dma_private) {
+ dma_free_coherent(substream->pcm->dev,
+ sizeof(struct dma_private),
+ dma_private, dma_private->tcd_buf_phys);
+ substream->runtime->private_data = NULL;
+ }
+ ssi_audio_disable_ssi();
+ return 0;
+}
+
+static int snd_coldfire_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ int err;
+
+ /* set runtime buffer */
+ err = snd_pcm_lib_malloc_pages(
+ substream, params_buffer_bytes(hw_params));
+ if (err < 0)
+ printk(KERN_ERR "Error allocating pages, err=%d\n", err);
+ return err;
+}
+
+static int snd_coldfire_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ /* free the memory if was newly allocated */
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int
+snd_coldfire_pcm_playback_prepare(struct snd_pcm_substream *substream)
+{
+ int err;
+
+ if (g_tx_dmaing == 1)
+ return 0;
+
+ ssi_audio_adjust_codec_speed(substream);
+ err = ssi_audio_dma_playback_config(substream);
+ if (err < 0) {
+ printk(KERN_ERR "Error configuring playback, "
+ "err=%d\n", err);
+ return err;
+ }
+
+ ssi_audio_dma_playback_start();
+ return 0;
+}
+
+static int snd_coldfire_pcm_capture_prepare(struct snd_pcm_substream *substream)
+{
+ int err;
+
+ if (g_rx_dmaing == 1)
+ return 0;
+
+ ssi_audio_adjust_codec_speed(substream);
+ err = ssi_audio_dma_capture_config(substream);
+ if (err < 0) {
+ printk(KERN_ERR "Error configuring capture, "
+ "err=%d\n", err);
+ return err;
+ }
+ ssi_audio_dma_capture_start();
+
+ return 0;
+}
+
+static int
+snd_coldfire_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ ssi_audio_enable_ssi_playback();
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ssi_audio_disable_ssi_playback();
+ break;
+ default:
+ printk(KERN_ERR "Unsupported trigger command, cmd=%d\n", cmd);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+snd_coldfire_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ ssi_audio_enable_ssi_capture();
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ssi_audio_disable_ssi_capture();
+ break;
+ default:
+ printk(KERN_ERR "Unsupported trigger command, cmd=%d\n", cmd);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t
+snd_coldfire_pcm_playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private = runtime->private_data;
+ snd_pcm_uframes_t pointer;
+ u32 offset;
+
+ offset = (u32)(MCF_EDMA_TCD_SADDR(DMA_TX_TCD0) -
+ dma_private->dma_buf_phys);
+ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE)
+ pointer = offset / (runtime->channels == 1 ? 2 : 4);
+ else
+ pointer = 0;
+
+ return pointer;
+}
+
+static snd_pcm_uframes_t
+snd_coldfire_pcm_capture_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dma_private *dma_private = runtime->private_data;
+ snd_pcm_uframes_t pointer;
+ u32 offset;
+
+ offset = (u32)(MCF_EDMA_TCD_DADDR(DMA_RX_TCD0) -
+ dma_private->dma_buf_phys);
+ if (runtime->format == SNDRV_PCM_FORMAT_S16_BE)
+ pointer = offset / (runtime->channels == 1 ? 2 : 4);
+ else
+ pointer = 0;
+
+ return pointer;
+}
+
+static struct snd_pcm_ops snd_coldfire_playback_ops = {
+ .open = snd_coldfire_playback_open,
+ .close = snd_coldfire_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_coldfire_pcm_hw_params,
+ .hw_free = snd_coldfire_pcm_hw_free,
+ .prepare = snd_coldfire_pcm_playback_prepare,
+ .trigger = snd_coldfire_pcm_playback_trigger,
+ .pointer = snd_coldfire_pcm_playback_pointer,
+};
+
+static struct snd_pcm_ops snd_coldfire_capture_ops = {
+ .open = snd_coldfire_capture_open,
+ .close = snd_coldfire_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_coldfire_pcm_hw_params,
+ .hw_free = snd_coldfire_pcm_hw_free,
+ .prepare = snd_coldfire_pcm_capture_prepare,
+ .trigger = snd_coldfire_pcm_capture_trigger,
+ .pointer = snd_coldfire_pcm_capture_pointer,
+};
+
+static int snd_coldfire_new_pcm(struct chip_spec *chip)
+{
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_pcm_new(chip->card, "coldfire", 0, 1, 1,
+ &pcm);
+ if (err < 0) {
+ printk(KERN_ERR "Error creating new pcm, err=%d\n", err);
+ return err;
+ }
+ pcm->private_data = chip;
+ strncpy(pcm->name, SOUND_CARD_NAME, sizeof(pcm->name));
+ chip->pcm = pcm;
+ pcm->info_flags = 0;
+
+ /* set operators */
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &snd_coldfire_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &snd_coldfire_capture_ops);
+ /* pre-allocation of buffers */
+ err = snd_pcm_lib_preallocate_pages_for_all(
+ pcm,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ snd_dma_continuous_data(GFP_KERNEL),
+ MAX_BUFFER_SIZE,
+ MAX_BUFFER_SIZE);
+
+ if (!pcm->streams[0].substream->dma_buffer.addr)
+ pcm->streams[0].substream->dma_buffer.addr =
+ virt_to_phys(pcm->streams[0].substream->dma_buffer.area);
+ if (!pcm->streams[1].substream->dma_buffer.addr)
+ pcm->streams[1].substream->dma_buffer.addr =
+ virt_to_phys(pcm->streams[1].substream->dma_buffer.area);
+
+ if (err) {
+ printk(KERN_ERR
+ "Can't pre-allocate DMA buffer (size=%u)\n",
+ MAX_BUFFER_SIZE);
+ return -ENOMEM;
+ }
+
+ chip->audio_device =
+ kmalloc(sizeof(struct tlv320a_audio_device), GFP_DMA);
+
+ if (!chip->audio_device) {
+ snd_pcm_lib_preallocate_free_for_all(pcm);
+ printk(KERN_ERR
+ "Can't allocate buffer for audio device\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int tlv320a_set_out_volume(unsigned char value)
+{
+ unsigned char data;
+
+ if (value > TLV320A_VOL_MAX)
+ data = TLV320A_VOL_MAX;
+ else
+ data = value;
+
+ if (mcf_codec_spi_write(CODEC_LEFT_HP_VOL_REG, data) < 0)
+ return -EINVAL;
+
+ if (mcf_codec_spi_write(CODEC_RIGHT_HP_VOL_REG, data) < 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int tlv320a_info_out_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = TLV320A_VOL_MIN;
+ uinfo->value.integer.max = TLV320A_VOL_MAX;
+ return 0;
+}
+
+static int tlv320a_get_out_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = g_mastervol;
+ return 0;
+}
+
+static int tlv320a_put_out_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ unsigned char vol;
+ int change;
+
+ vol = ucontrol->value.integer.value[0];
+
+ if (vol > TLV320A_VOL_MAX)
+ return -EINVAL;
+
+ change = (g_mastervol != vol);
+ if (change) {
+ g_mastervol = vol;
+ tlv320a_set_out_volume(vol);
+ }
+ return change;
+}
+
+static int tlv320a_set_linein_volume(unsigned char value)
+{
+ unsigned char data;
+
+ if (value > TLV320A_LINEIN_MAX)
+ data = TLV320A_LINEIN_MAX;
+ else
+ data = value;
+
+ if (mcf_codec_spi_write(CODEC_LEFT_IN_REG, data) < 0)
+ return -EINVAL;
+
+ if (mcf_codec_spi_write(CODEC_RIGHT_IN_REG, data) < 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int tlv320a_info_linein_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = TLV320A_LINEIN_MAX;
+ return 0;
+}
+
+static int tlv320a_get_linein_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = g_lineinvol;
+ return 0;
+}
+
+static int tlv320a_put_linein_volume(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ unsigned char vol;
+ int change;
+
+ vol = ucontrol->value.integer.value[0];
+
+ if (vol > TLV320A_LINEIN_MAX)
+ return -EINVAL;
+
+ change = (g_lineinvol != vol);
+ if (change) {
+ g_lineinvol = vol;
+ tlv320a_set_linein_volume(vol);
+ }
+ return change;
+}
+
+#define tlv320a_info_mic_boost snd_ctl_boolean_mono_info
+static int tlv320a_get_mic_boost(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = ((g_analogpath & 0x1) == 1);
+ return 0;
+}
+
+static int tlv320a_put_mic_boost(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int oldboost, newboost;
+ u8 data;
+ if (ucontrol->value.integer.value[0] == 1)
+ newboost = 1;
+ else
+ newboost = 0;
+ oldboost = g_analogpath & 0x1;
+
+ if (oldboost == newboost)
+ return 0;
+ data = (g_analogpath & 0xfe) | (newboost & 0x1);
+ if (mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, data) < 0)
+ return -EINVAL;
+ g_analogpath = data;
+ return 1;
+}
+
+static int tlv320a_info_capture_source(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ static char *texts[] = { "Line-In", "Microphone" };
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = 2;
+ if (uinfo->value.enumerated.item > 1)
+ uinfo->value.enumerated.item = 1;
+ strcpy(uinfo->value.enumerated.name,
+ texts[uinfo->value.enumerated.item]);
+ return 0;
+}
+
+static int tlv320a_get_capture_source(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+
+ ucontrol->value.enumerated.item[0] = ((g_analogpath & 0x4) == 0x4);
+ return 0;
+}
+
+static int tlv320a_put_capture_source(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int oldinput, newinput;
+ u8 data;
+
+ if (ucontrol->value.enumerated.item[0] > 1)
+ return -EINVAL;
+
+ oldinput = (g_analogpath & 0x4) ? INPUT_MICROPHONE : INPUT_LINEIN;
+
+ if (ucontrol->value.enumerated.item[0])
+ newinput = INPUT_MICROPHONE;
+ else
+ newinput = INPUT_LINEIN;
+ if (oldinput == newinput)
+ return 0;
+ data = (g_analogpath & 0xfb) |
+ (newinput == INPUT_MICROPHONE ? 0x4 : 0);
+ if (mcf_codec_spi_write(CODEC_ANALOG_APATH_REG, data) < 0)
+ return -EINVAL;
+ g_analogpath = data;
+ return 1;
+}
+
+static struct snd_kcontrol_new tlv320_mixer_out __devinitdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "play volume",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tlv320a_info_out_volume,
+ .get = tlv320a_get_out_volume,
+ .put = tlv320a_put_out_volume,
+};
+
+static struct snd_kcontrol_new tlv320_mixer_linein __devinitdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "record volume",
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tlv320a_info_linein_volume,
+ .get = tlv320a_get_linein_volume,
+ .put = tlv320a_put_linein_volume,
+};
+
+static struct snd_kcontrol_new tlv320_mixer_capture_source __devinitdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "record source",
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tlv320a_info_capture_source,
+ .get = tlv320a_get_capture_source,
+ .put = tlv320a_put_capture_source,
+};
+
+static struct snd_kcontrol_new tlv320_mixer_mic_boost __devinitdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "mic Boost",
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tlv320a_info_mic_boost,
+ .get = tlv320a_get_mic_boost,
+ .put = tlv320a_put_mic_boost,
+};
+
+static int __devinit coldfire_alsa_audio_probe(struct platform_device *dev)
+{
+ struct snd_card *card;
+ struct chip_spec *chip;
+ int err;
+
+ err = snd_card_create(-1, id, THIS_MODULE,
+ sizeof(struct chip_spec), &card);
+ if (err < 0)
+ return -ENOMEM;
+
+ chip = card->private_data;
+
+ chip->card = card;
+ card->dev = &dev->dev;
+
+ err = snd_coldfire_new_pcm(chip);
+ if (err < 0)
+ return -ENOMEM;
+
+ strcpy(card->driver, "coldfire");
+ strcpy(card->shortname, "Coldfire-TLV320A");
+ sprintf(card->longname, "Freescale Coldfire with TLV320A");
+
+ err = snd_card_register(card);
+ if (err == 0) {
+ pr_debug(KERN_INFO "Coldfire audio support initialized\n");
+ platform_set_drvdata(dev, card);
+ }
+
+ strcpy(chip->card->mixername, "TLV320A Volume");
+ err = snd_ctl_add(chip->card, snd_ctl_new1(&tlv320_mixer_out, chip));
+ if (err)
+ goto error;
+ err = snd_ctl_add(chip->card, snd_ctl_new1(&tlv320_mixer_linein, chip));
+ if (err)
+ goto error;
+ err = snd_ctl_add(chip->card,
+ snd_ctl_new1(&tlv320_mixer_capture_source,
+ chip));
+ if (err)
+ goto error;
+ err = snd_ctl_add(chip->card,
+ snd_ctl_new1(&tlv320_mixer_mic_boost,
+ chip));
+ if (err)
+ goto error;
+ g_mastervol = TLV320A_VOL_INIT;
+ g_lineinvol = TLV320A_LINEIN_INIT;
+ g_analogpath = TLV320A_ANALOGPATH_INIT;
+ ssi_audio_codec_reset();
+ return 0;
+error:
+ kfree(card->private_data);
+ snd_card_free(card);
+ platform_set_drvdata(dev, NULL);
+ return err;
+}
+
+static int coldfire_alsa_audio_remove(struct platform_device *dev)
+{
+ struct snd_card *card;
+
+ card = platform_get_drvdata(dev);
+ kfree(card->private_data);
+ snd_card_free(card);
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver coldfire_alsa_audio_driver = {
+ .probe = coldfire_alsa_audio_probe,
+ .remove = coldfire_alsa_audio_remove,
+ .driver = {
+ .name = SOUND_CARD_NAME,
+ },
+};
+
+static int __init coldfire_alsa_audio_init(void)
+{
+ int err;
+ err = platform_driver_register(&coldfire_alsa_audio_driver);
+ if (err < 0)
+ return err;
+
+ device = platform_device_register_simple(SOUND_CARD_NAME, -1, NULL, 0);
+ if (!IS_ERR(device)) {
+ if (platform_get_drvdata(device))
+ return 0;
+ platform_device_unregister(device);
+ platform_driver_unregister(&coldfire_alsa_audio_driver);
+ err = -ENODEV;
+ } else
+ err = PTR_ERR(device);
+
+ platform_driver_unregister(&coldfire_alsa_audio_driver);
+ return err;
+}
+
+static void __exit coldfire_alsa_audio_exit(void)
+{
+ platform_device_unregister(device);
+ platform_driver_unregister(&coldfire_alsa_audio_driver);
+}
+
+module_init(coldfire_alsa_audio_init);
+module_exit(coldfire_alsa_audio_exit);
+
+MODULE_DESCRIPTION("Coldfire driver for ALSA");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{TLV320A}}");
+
+module_param(id, charp, 0444);
+MODULE_PARM_DESC(id, "ID string for Coldfire + TLV320A soundcard.");
--- /dev/null
+++ b/sound/coldfire/snd-coldfire.h
@@ -0,0 +1,15 @@
+/*
+ * linux/sound/coldfire/snd-coldfire.h
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * ALSA driver for Coldfire SSI
+ *
+ * This 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.
+ */
+
+extern int mcf_codec_spi_write(u8 addr, u16 data);
+
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