2 * File: sound/soc/blackfin/bf5xx-ad73311.c
3 * Author: Cliff Cai <Cliff.Cai@analog.com>
5 * Created: Thur Sep 25 2008
6 * Description: Board driver for ad73311 sound chip
9 * Copyright 2008 Analog Devices Inc.
11 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see the file COPYING, or write
25 * to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <linux/device.h>
32 #include <linux/delay.h>
33 #include <linux/gpio.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/soc.h>
38 #include <sound/soc-dapm.h>
39 #include <sound/pcm_params.h>
41 #include <asm/blackfin.h>
42 #include <asm/cacheflush.h>
45 #include <asm/portmux.h>
47 #include "../codecs/ad73311.h"
48 #include "bf5xx-sport.h"
49 #include "bf5xx-i2s-pcm.h"
50 #include "bf5xx-i2s.h"
52 #if CONFIG_SND_BF5XX_SPORT_NUM == 0
53 #define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1
54 #define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1
55 #define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2
56 #define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16
57 #define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT
59 #define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1
60 #define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1
61 #define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2
62 #define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16
63 #define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT
66 #define GPIO_SE CONFIG_SND_BFIN_AD73311_SE
68 static struct snd_soc_card bf5xx_ad73311;
70 static int snd_ad73311_startup(void)
72 pr_debug("%s enter\n", __func__);
74 /* Pull up SE pin on AD73311L */
75 gpio_set_value(GPIO_SE, 1);
79 static int snd_ad73311_configure(void)
81 unsigned short ctrl_regs[6];
82 unsigned short status = 0;
85 /* DMCLK = MCLK = 16.384 MHz
86 * SCLK = DMCLK/8 = 2.048 MHz
87 * Sample Rate = DMCLK/2048 = 8 KHz
89 ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
90 REGB_SCDIV(0) | REGB_DIRATE(0);
91 ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
92 REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
93 ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
95 ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
96 ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
97 ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;
100 snd_ad73311_startup();
103 bfin_write_SPORT_TCR1(TFSR);
104 bfin_write_SPORT_TCR2(0xF);
107 /* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
108 * FIFO before enable SPORT to transfer the data
110 for (count = 0; count < 6; count++)
111 bfin_write_SPORT_TX16(ctrl_regs[count]);
113 bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
116 /* When TUVF is set, the data is already send out */
117 while (!(status & TUVF) && ++count < 10000) {
119 status = bfin_read_SPORT_STAT();
122 bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
126 if (count >= 10000) {
127 printk(KERN_ERR "ad73311: failed to configure codec\n");
133 static int bf5xx_probe(struct platform_device *pdev)
136 if (gpio_request(GPIO_SE, "AD73311_SE")) {
137 printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
141 gpio_direction_output(GPIO_SE, 0);
143 err = snd_ad73311_configure();
150 static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
152 struct snd_soc_pcm_runtime *rtd = substream->private_data;
153 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
155 pr_debug("%s enter\n", __func__);
156 cpu_dai->private_data = sport_handle;
160 static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream,
161 struct snd_pcm_hw_params *params)
163 struct snd_soc_pcm_runtime *rtd = substream->private_data;
164 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
167 pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
168 params_format(params));
170 /* set cpu DAI configuration */
171 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
172 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
180 static struct snd_soc_ops bf5xx_ad73311_ops = {
181 .startup = bf5xx_ad73311_startup,
182 .hw_params = bf5xx_ad73311_hw_params,
185 static struct snd_soc_dai_link bf5xx_ad73311_dai = {
187 .stream_name = "AD73311",
188 .cpu_dai = &bf5xx_i2s_dai,
189 .codec_dai = &ad73311_dai,
190 .ops = &bf5xx_ad73311_ops,
193 static struct snd_soc_card bf5xx_ad73311 = {
194 .name = "bf5xx_ad73311",
195 .platform = &bf5xx_i2s_soc_platform,
196 .probe = bf5xx_probe,
197 .dai_link = &bf5xx_ad73311_dai,
201 static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
202 .card = &bf5xx_ad73311,
203 .codec_dev = &soc_codec_dev_ad73311,
206 static struct platform_device *bf52x_ad73311_snd_device;
208 static int __init bf5xx_ad73311_init(void)
212 pr_debug("%s enter\n", __func__);
213 bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
214 if (!bf52x_ad73311_snd_device)
217 platform_set_drvdata(bf52x_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
218 bf5xx_ad73311_snd_devdata.dev = &bf52x_ad73311_snd_device->dev;
219 ret = platform_device_add(bf52x_ad73311_snd_device);
222 platform_device_put(bf52x_ad73311_snd_device);
227 static void __exit bf5xx_ad73311_exit(void)
229 pr_debug("%s enter\n", __func__);
230 platform_device_unregister(bf52x_ad73311_snd_device);
233 module_init(bf5xx_ad73311_init);
234 module_exit(bf5xx_ad73311_exit);
236 /* Module information */
237 MODULE_AUTHOR("Cliff Cai");
238 MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
239 MODULE_LICENSE("GPL");