875065491f
One of the issues with the ASoC v1 API which has been addressed in the ASoC v2 work that Liam Girdwood has done is that the ALSA card provided by ASoC is distributed around the ASoC structures. For example, machine wide data such as the struct snd_card are maintained as part of the CODEC data structure, preventing the use of multiple codecs. This has been addressed by refactoring the data structures so that all the data for the ALSA card is contained in a single structure snd_soc_card which replaces the existing snd_soc_machine and snd_soc_device. Begin the process of backporting this by renaming struct snd_soc_machine to struct snd_soc_card, better reflecting its function and bringing it closer to standard ALSA terminology. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
241 lines
6.3 KiB
C
241 lines
6.3 KiB
C
/*
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* File: sound/soc/blackfin/bf5xx-ad73311.c
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* Author: Cliff Cai <Cliff.Cai@analog.com>
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*
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* Created: Thur Sep 25 2008
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* Description: Board driver for ad73311 sound chip
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*
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* Modified:
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* Copyright 2008 Analog Devices Inc.
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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/device.h>
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#include <linux/delay.h>
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#include <linux/gpio.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 <sound/pcm_params.h>
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#include <asm/blackfin.h>
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#include <asm/cacheflush.h>
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#include <asm/irq.h>
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#include <asm/dma.h>
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#include <asm/portmux.h>
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#include "../codecs/ad73311.h"
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#include "bf5xx-sport.h"
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#include "bf5xx-i2s-pcm.h"
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#include "bf5xx-i2s.h"
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#if CONFIG_SND_BF5XX_SPORT_NUM == 0
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#define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1
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#define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1
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#define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2
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#define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16
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#define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT
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#else
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#define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1
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#define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1
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#define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2
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#define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16
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#define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT
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#endif
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#define GPIO_SE CONFIG_SND_BFIN_AD73311_SE
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static struct snd_soc_card bf5xx_ad73311;
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static int snd_ad73311_startup(void)
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{
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pr_debug("%s enter\n", __func__);
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/* Pull up SE pin on AD73311L */
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gpio_set_value(GPIO_SE, 1);
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return 0;
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}
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static int snd_ad73311_configure(void)
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{
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unsigned short ctrl_regs[6];
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unsigned short status = 0;
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int count = 0;
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/* DMCLK = MCLK = 16.384 MHz
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* SCLK = DMCLK/8 = 2.048 MHz
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* Sample Rate = DMCLK/2048 = 8 KHz
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*/
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ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
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REGB_SCDIV(0) | REGB_DIRATE(0);
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ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
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REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
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ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
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REGD_IGS(2);
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ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
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ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
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ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;
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local_irq_disable();
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snd_ad73311_startup();
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udelay(1);
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bfin_write_SPORT_TCR1(TFSR);
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bfin_write_SPORT_TCR2(0xF);
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SSYNC();
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/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
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* FIFO before enable SPORT to transfer the data
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*/
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for (count = 0; count < 6; count++)
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bfin_write_SPORT_TX16(ctrl_regs[count]);
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SSYNC();
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bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
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SSYNC();
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/* When TUVF is set, the data is already send out */
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while (!(status & TUVF) && count++ < 10000) {
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udelay(1);
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status = bfin_read_SPORT_STAT();
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SSYNC();
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}
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bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
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SSYNC();
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local_irq_enable();
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if (count == 10000) {
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printk(KERN_ERR "ad73311: failed to configure codec\n");
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return -1;
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}
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return 0;
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}
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static int bf5xx_probe(struct platform_device *pdev)
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{
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int err;
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if (gpio_request(GPIO_SE, "AD73311_SE")) {
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printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
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return -EBUSY;
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}
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gpio_direction_output(GPIO_SE, 0);
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err = snd_ad73311_configure();
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if (err < 0)
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return -EFAULT;
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return 0;
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}
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static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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pr_debug("%s enter\n", __func__);
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cpu_dai->private_data = sport_handle;
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return 0;
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}
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static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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int ret = 0;
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pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
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params_format(params));
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops bf5xx_ad73311_ops = {
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.startup = bf5xx_ad73311_startup,
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.hw_params = bf5xx_ad73311_hw_params,
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};
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static struct snd_soc_dai_link bf5xx_ad73311_dai = {
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.name = "ad73311",
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.stream_name = "AD73311",
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.cpu_dai = &bf5xx_i2s_dai,
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.codec_dai = &ad73311_dai,
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.ops = &bf5xx_ad73311_ops,
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};
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static struct snd_soc_card bf5xx_ad73311 = {
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.name = "bf5xx_ad73311",
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.probe = bf5xx_probe,
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.dai_link = &bf5xx_ad73311_dai,
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.num_links = 1,
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};
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static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
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.card = &bf5xx_ad73311,
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.platform = &bf5xx_i2s_soc_platform,
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.codec_dev = &soc_codec_dev_ad73311,
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};
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static struct platform_device *bf52x_ad73311_snd_device;
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static int __init bf5xx_ad73311_init(void)
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{
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int ret;
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pr_debug("%s enter\n", __func__);
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bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
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if (!bf52x_ad73311_snd_device)
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return -ENOMEM;
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platform_set_drvdata(bf52x_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
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bf5xx_ad73311_snd_devdata.dev = &bf52x_ad73311_snd_device->dev;
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ret = platform_device_add(bf52x_ad73311_snd_device);
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if (ret)
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platform_device_put(bf52x_ad73311_snd_device);
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return ret;
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}
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static void __exit bf5xx_ad73311_exit(void)
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{
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pr_debug("%s enter\n", __func__);
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platform_device_unregister(bf52x_ad73311_snd_device);
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}
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module_init(bf5xx_ad73311_init);
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module_exit(bf5xx_ad73311_exit);
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/* Module information */
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MODULE_AUTHOR("Cliff Cai");
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MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
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MODULE_LICENSE("GPL");
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