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Diffstat (limited to 'sound/soc/atmel/sam9g20_wm8731.c')
-rw-r--r--sound/soc/atmel/sam9g20_wm8731.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
deleted file mode 100644
index 1fb59a9d3719..000000000000
--- a/sound/soc/atmel/sam9g20_wm8731.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * sam9g20_wm8731 -- SoC audio for AT91SAM9G20-based
- * ATMEL AT91SAM9G20ek board.
- *
- * Copyright (C) 2005 SAN People
- * Copyright (C) 2008 Atmel
- *
- * Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
- *
- * Based on ati_b1_wm8731.c by:
- * Frank Mandarino <fmandarino@endrelia.com>
- * Copyright 2006 Endrelia Technologies Inc.
- * Based on corgi.c by:
- * Copyright 2005 Wolfson Microelectronics PLC.
- * Copyright 2005 Openedhand Ltd.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/clk.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-
-#include <linux/atmel-ssc.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/soc-dapm.h>
-
-#include <mach/hardware.h>
-#include <mach/gpio.h>
-
-#include "../codecs/wm8731.h"
-#include "atmel-pcm.h"
-#include "atmel_ssc_dai.h"
-
-
-static int at91sam9g20ek_startup(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
- int ret;
-
- /* codec system clock is supplied by PCK0, set to 12MHz */
- ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
- 12000000, SND_SOC_CLOCK_IN);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static void at91sam9g20ek_shutdown(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
-
- dev_dbg(rtd->socdev->dev, "shutdown");
-}
-
-static int at91sam9g20ek_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_dai *codec_dai = rtd->dai->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- struct atmel_ssc_info *ssc_p = cpu_dai->private_data;
- struct ssc_device *ssc = ssc_p->ssc;
- int ret;
-
- unsigned int rate;
- int cmr_div, period;
-
- if (ssc == NULL) {
- printk(KERN_INFO "at91sam9g20ek_hw_params: ssc is NULL!\n");
- return -EINVAL;
- }
-
- /* set codec DAI configuration */
- ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- /* set cpu DAI configuration */
- ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- /*
- * The SSC clock dividers depend on the sample rate. The CMR.DIV
- * field divides the system master clock MCK to drive the SSC TK
- * signal which provides the codec BCLK. The TCMR.PERIOD and
- * RCMR.PERIOD fields further divide the BCLK signal to drive
- * the SSC TF and RF signals which provide the codec DACLRC and
- * ADCLRC clocks.
- *
- * The dividers were determined through trial and error, where a
- * CMR.DIV value is chosen such that the resulting BCLK value is
- * divisible, or almost divisible, by (2 * sample rate), and then
- * the TCMR.PERIOD or RCMR.PERIOD is BCLK / (2 * sample rate) - 1.
- */
- rate = params_rate(params);
-
- switch (rate) {
- case 8000:
- cmr_div = 55; /* BCLK = 133MHz/(2*55) = 1.209MHz */
- period = 74; /* LRC = BCLK/(2*(74+1)) ~= 8060,6Hz */
- break;
- case 11025:
- cmr_div = 67; /* BCLK = 133MHz/(2*60) = 1.108MHz */
- period = 45; /* LRC = BCLK/(2*(49+1)) = 11083,3Hz */
- break;
- case 16000:
- cmr_div = 63; /* BCLK = 133MHz/(2*63) = 1.055MHz */
- period = 32; /* LRC = BCLK/(2*(32+1)) = 15993,2Hz */
- break;
- case 22050:
- cmr_div = 52; /* BCLK = 133MHz/(2*52) = 1.278MHz */
- period = 28; /* LRC = BCLK/(2*(28+1)) = 22049Hz */
- break;
- case 32000:
- cmr_div = 66; /* BCLK = 133MHz/(2*66) = 1.007MHz */
- period = 15; /* LRC = BCLK/(2*(15+1)) = 31486,742Hz */
- break;
- case 44100:
- cmr_div = 29; /* BCLK = 133MHz/(2*29) = 2.293MHz */
- period = 25; /* LRC = BCLK/(2*(25+1)) = 44098Hz */
- break;
- case 48000:
- cmr_div = 33; /* BCLK = 133MHz/(2*33) = 2.015MHz */
- period = 20; /* LRC = BCLK/(2*(20+1)) = 47979,79Hz */
- break;
- case 88200:
- cmr_div = 29; /* BCLK = 133MHz/(2*29) = 2.293MHz */
- period = 12; /* LRC = BCLK/(2*(12+1)) = 88196Hz */
- break;
- case 96000:
- cmr_div = 23; /* BCLK = 133MHz/(2*23) = 2.891MHz */
- period = 14; /* LRC = BCLK/(2*(14+1)) = 96376Hz */
- break;
- default:
- printk(KERN_WARNING "unsupported rate %d"
- " on at91sam9g20ek board\n", rate);
- return -EINVAL;
- }
-
- /* set the MCK divider for BCLK */
- ret = snd_soc_dai_set_clkdiv(cpu_dai, ATMEL_SSC_CMR_DIV, cmr_div);
- if (ret < 0)
- return ret;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /* set the BCLK divider for DACLRC */
- ret = snd_soc_dai_set_clkdiv(cpu_dai,
- ATMEL_SSC_TCMR_PERIOD, period);
- } else {
- /* set the BCLK divider for ADCLRC */
- ret = snd_soc_dai_set_clkdiv(cpu_dai,
- ATMEL_SSC_RCMR_PERIOD, period);
- }
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static struct snd_soc_ops at91sam9g20ek_ops = {
- .startup = at91sam9g20ek_startup,
- .hw_params = at91sam9g20ek_hw_params,
- .shutdown = at91sam9g20ek_shutdown,
-};
-
-
-static const struct snd_soc_dapm_widget at91sam9g20ek_dapm_widgets[] = {
- SND_SOC_DAPM_MIC("Int Mic", NULL),
- SND_SOC_DAPM_SPK("Ext Spk", NULL),
-};
-
-static const struct snd_soc_dapm_route intercon[] = {
-
- /* speaker connected to LHPOUT */
- {"Ext Spk", NULL, "LHPOUT"},
-
- /* mic is connected to Mic Jack, with WM8731 Mic Bias */
- {"MICIN", NULL, "Mic Bias"},
- {"Mic Bias", NULL, "Int Mic"},
-};
-
-/*
- * Logic for a wm8731 as connected on a at91sam9g20ek board.
- */
-static int at91sam9g20ek_wm8731_init(struct snd_soc_codec *codec)
-{
- printk(KERN_DEBUG
- "at91sam9g20ek_wm8731 "
- ": at91sam9g20ek_wm8731_init() called\n");
-
- /* Add specific widgets */
- snd_soc_dapm_new_controls(codec, at91sam9g20ek_dapm_widgets,
- ARRAY_SIZE(at91sam9g20ek_dapm_widgets));
- /* Set up specific audio path interconnects */
- snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
-
- /* not connected */
- snd_soc_dapm_disable_pin(codec, "RLINEIN");
- snd_soc_dapm_disable_pin(codec, "LLINEIN");
-
- /* always connected */
- snd_soc_dapm_enable_pin(codec, "Int Mic");
- snd_soc_dapm_enable_pin(codec, "Ext Spk");
-
- snd_soc_dapm_sync(codec);
-
- return 0;
-}
-
-static struct snd_soc_dai_link at91sam9g20ek_dai = {
- .name = "WM8731",
- .stream_name = "WM8731 PCM",
- .cpu_dai = &atmel_ssc_dai[0],
- .codec_dai = &wm8731_dai,
- .init = at91sam9g20ek_wm8731_init,
- .ops = &at91sam9g20ek_ops,
-};
-
-static struct snd_soc_card snd_soc_at91sam9g20ek = {
- .name = "WM8731",
- .platform = &atmel_soc_platform,
- .dai_link = &at91sam9g20ek_dai,
- .num_links = 1,
-};
-
-static struct wm8731_setup_data at91sam9g20ek_wm8731_setup = {
- .i2c_bus = 0,
- .i2c_address = 0x1b,
-};
-
-static struct snd_soc_device at91sam9g20ek_snd_devdata = {
- .card = &snd_soc_at91sam9g20ek,
- .codec_dev = &soc_codec_dev_wm8731,
- .codec_data = &at91sam9g20ek_wm8731_setup,
-};
-
-static struct platform_device *at91sam9g20ek_snd_device;
-
-static int __init at91sam9g20ek_init(void)
-{
- struct atmel_ssc_info *ssc_p = at91sam9g20ek_dai.cpu_dai->private_data;
- struct ssc_device *ssc = NULL;
- int ret;
-
- /*
- * Request SSC device
- */
- ssc = ssc_request(0);
- if (IS_ERR(ssc)) {
- ret = PTR_ERR(ssc);
- ssc = NULL;
- goto err_ssc;
- }
- ssc_p->ssc = ssc;
-
- at91sam9g20ek_snd_device = platform_device_alloc("soc-audio", -1);
- if (!at91sam9g20ek_snd_device) {
- printk(KERN_DEBUG
- "platform device allocation failed\n");
- ret = -ENOMEM;
- }
-
- platform_set_drvdata(at91sam9g20ek_snd_device,
- &at91sam9g20ek_snd_devdata);
- at91sam9g20ek_snd_devdata.dev = &at91sam9g20ek_snd_device->dev;
-
- ret = platform_device_add(at91sam9g20ek_snd_device);
- if (ret) {
- printk(KERN_DEBUG
- "platform device allocation failed\n");
- platform_device_put(at91sam9g20ek_snd_device);
- }
-
- return ret;
-
-err_ssc:
- return ret;
-}
-
-static void __exit at91sam9g20ek_exit(void)
-{
- struct atmel_ssc_info *ssc_p = at91sam9g20ek_dai.cpu_dai->private_data;
- struct ssc_device *ssc;
-
- if (ssc_p != NULL) {
- ssc = ssc_p->ssc;
- if (ssc != NULL)
- ssc_free(ssc);
- ssc_p->ssc = NULL;
- }
-
- platform_device_unregister(at91sam9g20ek_snd_device);
- at91sam9g20ek_snd_device = NULL;
-}
-
-module_init(at91sam9g20ek_init);
-module_exit(at91sam9g20ek_exit);
-
-/* Module information */
-MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");
-MODULE_DESCRIPTION("ALSA SoC AT91SAM9G20EK_WM8731");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 13:04:35 +0000