[ALSA] ASoC AT91RM92000 eti_b1 machine support
This patch adds support for the Endrelia ETI_B1 machine using the WM8731 codec and the AT91RM9200 platform. Signed-off-by: Frank Mandarino <fmandarino@endrelia.com> Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Frank Mandarino
Jaroslav Kysela
parent
0cbbec0984
commit
b41bf38a43
1 changed files with 230 additions and 0 deletions
230
sound/soc/at91/eti_b1_wm8731.c
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sound/soc/at91/eti_b1_wm8731.c
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/*
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* eti_b1_wm8731 -- SoC audio for Endrelia ETI_B1.
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*
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* Author: Frank Mandarino <fmandarino@endrelia.com>
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* Endrelia Technologies Inc.
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* Created: Mar 29, 2006
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*
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* Based on corgi.c by:
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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*
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* Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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* Richard Purdie <richard@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Revision history
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* 30th Nov 2005 Initial version.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/version.h>
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#include <linux/kernel.h>
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#include <linux/clk.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/arch/at91rm9200.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/hardware.h>
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#include "../codecs/wm8731.h"
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#include "at91rm9200-pcm.h"
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#if 0
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#define DBG(x...) printk(KERN_INFO "eti_b1_wm8731:" x)
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#else
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#define DBG(x...)
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#endif
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static struct clk *pck1_clk;
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static struct clk *pllb_clk;
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static int eti_b1_startup(snd_pcm_substream_t *substream)
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{
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/* Start PCK1 clock. */
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clk_enable(pck1_clk);
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DBG("pck1 started\n");
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return 0;
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}
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static void eti_b1_shutdown(snd_pcm_substream_t *substream)
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{
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/* Stop PCK1 clock. */
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clk_disable(pck1_clk);
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DBG("pck1 stopped\n");
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}
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static struct snd_soc_ops eti_b1_ops = {
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.startup = eti_b1_startup,
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.shutdown = eti_b1_shutdown,
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};
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static const struct snd_soc_dapm_widget eti_b1_dapm_widgets[] = {
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SND_SOC_DAPM_MIC("Int Mic", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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};
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static const char *intercon[][3] = {
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/* speaker connected to LHPOUT */
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{"Ext Spk", NULL, "LHPOUT"},
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/* mic is connected to Mic Jack, with WM8731 Mic Bias */
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{"MICIN", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Int Mic"},
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/* terminator */
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{NULL, NULL, NULL},
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};
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/*
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* Logic for a wm8731 as connected on a Endrelia ETI-B1 board.
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*/
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static int eti_b1_wm8731_init(struct snd_soc_codec *codec)
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{
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int i;
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DBG("eti_b1_wm8731_init() called\n");
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/* Add specific widgets */
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for(i = 0; i < ARRAY_SIZE(eti_b1_dapm_widgets); i++) {
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snd_soc_dapm_new_control(codec, &eti_b1_dapm_widgets[i]);
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}
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/* Set up specific audio path interconnects */
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for(i = 0; intercon[i][0] != NULL; i++) {
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snd_soc_dapm_connect_input(codec, intercon[i][0],
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intercon[i][1], intercon[i][2]);
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}
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/* not connected */
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snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
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snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
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/* always connected */
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snd_soc_dapm_set_endpoint(codec, "Int Mic", 1);
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snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
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snd_soc_dapm_sync_endpoints(codec);
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return 0;
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}
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unsigned int eti_b1_config_sysclk(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_clock_info *info)
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{
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if(info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
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return rtd->codec_dai->config_sysclk(rtd->codec_dai, info, 12000000);
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}
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return 0;
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}
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static struct snd_soc_dai_link eti_b1_dai = {
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.name = "WM8731",
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.stream_name = "WM8731",
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.cpu_dai = &at91rm9200_i2s_dai[1],
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.codec_dai = &wm8731_dai,
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.init = eti_b1_wm8731_init,
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.config_sysclk = eti_b1_config_sysclk,
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};
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static struct snd_soc_machine snd_soc_machine_eti_b1 = {
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.name = "ETI_B1",
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.dai_link = &eti_b1_dai,
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.num_links = 1,
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.ops = &eti_b1_ops,
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};
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static struct wm8731_setup_data eti_b1_wm8731_setup = {
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.i2c_address = 0x1a,
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};
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static struct snd_soc_device eti_b1_snd_devdata = {
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.machine = &snd_soc_machine_eti_b1,
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.platform = &at91rm9200_soc_platform,
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.codec_dev = &soc_codec_dev_wm8731,
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.codec_data = &eti_b1_wm8731_setup,
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};
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static struct platform_device *eti_b1_snd_device;
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static int __init eti_b1_init(void)
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{
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int ret;
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u32 ssc_pio_lines;
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eti_b1_snd_device = platform_device_alloc("soc-audio", -1);
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if (!eti_b1_snd_device)
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return -ENOMEM;
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platform_set_drvdata(eti_b1_snd_device, &eti_b1_snd_devdata);
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eti_b1_snd_devdata.dev = &eti_b1_snd_device->dev;
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ret = platform_device_add(eti_b1_snd_device);
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if (ret) {
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platform_device_put(eti_b1_snd_device);
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return ret;
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}
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ssc_pio_lines = AT91_PB6_TF1 | AT91_PB7_TK1 | AT91_PB8_TD1
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| AT91_PB9_RD1 /* | AT91_PB10_RK1 | AT91_PB11_RF1 */;
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/* Reset all PIO registers and assign lines to peripheral A */
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at91_sys_write(AT91_PIOB + PIO_PDR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_ODR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_IFDR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_CODR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_IDR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_MDDR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_PUDR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_ASR, ssc_pio_lines);
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at91_sys_write(AT91_PIOB + PIO_OWDR, ssc_pio_lines);
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/*
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* Set PCK1 parent to PLLB and its rate to 12 Mhz.
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*/
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pllb_clk = clk_get(NULL, "pllb");
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pck1_clk = clk_get(NULL, "pck1");
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clk_set_parent(pck1_clk, pllb_clk);
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clk_set_rate(pck1_clk, 12000000);
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DBG("MCLK rate %luHz\n", clk_get_rate(pck1_clk));
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/* assign the GPIO pin to PCK1 */
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at91_set_B_periph(AT91_PIN_PA24, 0);
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return ret;
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}
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static void __exit eti_b1_exit(void)
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{
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clk_put(pck1_clk);
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clk_put(pllb_clk);
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platform_device_unregister(eti_b1_snd_device);
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}
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module_init(eti_b1_init);
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module_exit(eti_b1_exit);
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/* Module information */
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MODULE_AUTHOR("Frank Mandarino <fmandarino@endrelia.com>");
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MODULE_DESCRIPTION("ALSA SoC ETI-B1-WM8731");
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MODULE_LICENSE("GPL");
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