Cliff Cai | 5564b14 | 2008-09-27 22:31:21 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * File: sound/soc/blackfin/bf5xx-ad73311.c |
| 3 | * Author: Cliff Cai <Cliff.Cai@analog.com> |
| 4 | * |
| 5 | * Created: Thur Sep 25 2008 |
| 6 | * Description: Board driver for ad73311 sound chip |
| 7 | * |
| 8 | * Modified: |
| 9 | * Copyright 2008 Analog Devices Inc. |
| 10 | * |
| 11 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ |
| 12 | * |
| 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. |
| 17 | * |
| 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. |
| 22 | * |
| 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 |
| 27 | */ |
| 28 | |
| 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> |
| 34 | |
| 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> |
| 40 | |
| 41 | #include <asm/blackfin.h> |
| 42 | #include <asm/cacheflush.h> |
| 43 | #include <asm/irq.h> |
| 44 | #include <asm/dma.h> |
| 45 | #include <asm/portmux.h> |
| 46 | |
| 47 | #include "../codecs/ad73311.h" |
| 48 | #include "bf5xx-sport.h" |
| 49 | #include "bf5xx-i2s-pcm.h" |
| 50 | #include "bf5xx-i2s.h" |
| 51 | |
| 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 |
| 58 | #else |
| 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 |
| 64 | #endif |
| 65 | |
| 66 | #define GPIO_SE CONFIG_SND_BFIN_AD73311_SE |
| 67 | |
| 68 | static struct snd_soc_machine bf5xx_ad73311; |
| 69 | |
| 70 | static int snd_ad73311_startup(void) |
| 71 | { |
| 72 | pr_debug("%s enter\n", __func__); |
| 73 | |
| 74 | /* Pull up SE pin on AD73311L */ |
| 75 | gpio_set_value(GPIO_SE, 1); |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static int snd_ad73311_configure(void) |
| 80 | { |
| 81 | unsigned short ctrl_regs[6]; |
| 82 | unsigned short status = 0; |
| 83 | int count = 0; |
| 84 | |
| 85 | /* DMCLK = MCLK = 16.384 MHz |
| 86 | * SCLK = DMCLK/8 = 2.048 MHz |
| 87 | * Sample Rate = DMCLK/2048 = 8 KHz |
| 88 | */ |
| 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) | \ |
| 94 | REGD_IGS(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; |
| 98 | |
| 99 | local_irq_disable(); |
| 100 | snd_ad73311_startup(); |
| 101 | udelay(1); |
| 102 | |
| 103 | bfin_write_SPORT_TCR1(TFSR); |
| 104 | bfin_write_SPORT_TCR2(0xF); |
| 105 | SSYNC(); |
| 106 | |
| 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 |
| 109 | */ |
| 110 | for (count = 0; count < 6; count++) |
| 111 | bfin_write_SPORT_TX16(ctrl_regs[count]); |
| 112 | SSYNC(); |
| 113 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN); |
| 114 | SSYNC(); |
| 115 | |
| 116 | /* When TUVF is set, the data is already send out */ |
| 117 | while (!(status & TUVF) && count++ < 10000) { |
| 118 | udelay(1); |
| 119 | status = bfin_read_SPORT_STAT(); |
| 120 | SSYNC(); |
| 121 | } |
| 122 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN); |
| 123 | SSYNC(); |
| 124 | local_irq_enable(); |
| 125 | |
| 126 | if (count == 10000) { |
| 127 | printk(KERN_ERR "ad73311: failed to configure codec\n"); |
| 128 | return -1; |
| 129 | } |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static int bf5xx_probe(struct platform_device *pdev) |
| 134 | { |
| 135 | int err; |
| 136 | if (gpio_request(GPIO_SE, "AD73311_SE")) { |
| 137 | printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE); |
| 138 | return -EBUSY; |
| 139 | } |
| 140 | |
| 141 | gpio_direction_output(GPIO_SE, 0); |
| 142 | |
| 143 | err = snd_ad73311_configure(); |
| 144 | if (err < 0) |
| 145 | return -EFAULT; |
| 146 | |
| 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream) |
| 151 | { |
| 152 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 153 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
| 154 | |
| 155 | pr_debug("%s enter\n", __func__); |
| 156 | cpu_dai->private_data = sport_handle; |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream, |
| 161 | struct snd_pcm_hw_params *params) |
| 162 | { |
| 163 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 164 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
| 165 | int ret = 0; |
| 166 | |
| 167 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), |
| 168 | params_format(params)); |
| 169 | |
| 170 | /* set cpu DAI configuration */ |
| 171 | ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A | |
| 172 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
| 173 | if (ret < 0) |
| 174 | return ret; |
| 175 | |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | |
| 180 | static struct snd_soc_ops bf5xx_ad73311_ops = { |
| 181 | .startup = bf5xx_ad73311_startup, |
| 182 | .hw_params = bf5xx_ad73311_hw_params, |
| 183 | }; |
| 184 | |
| 185 | static struct snd_soc_dai_link bf5xx_ad73311_dai = { |
| 186 | .name = "ad73311", |
| 187 | .stream_name = "AD73311", |
| 188 | .cpu_dai = &bf5xx_i2s_dai, |
| 189 | .codec_dai = &ad73311_dai, |
| 190 | .ops = &bf5xx_ad73311_ops, |
| 191 | }; |
| 192 | |
| 193 | static struct snd_soc_machine bf5xx_ad73311 = { |
| 194 | .name = "bf5xx_ad73311", |
| 195 | .probe = bf5xx_probe, |
| 196 | .dai_link = &bf5xx_ad73311_dai, |
| 197 | .num_links = 1, |
| 198 | }; |
| 199 | |
| 200 | static struct snd_soc_device bf5xx_ad73311_snd_devdata = { |
| 201 | .machine = &bf5xx_ad73311, |
| 202 | .platform = &bf5xx_i2s_soc_platform, |
| 203 | .codec_dev = &soc_codec_dev_ad73311, |
| 204 | }; |
| 205 | |
| 206 | static struct platform_device *bf52x_ad73311_snd_device; |
| 207 | |
| 208 | static int __init bf5xx_ad73311_init(void) |
| 209 | { |
| 210 | int ret; |
| 211 | |
| 212 | pr_debug("%s enter\n", __func__); |
| 213 | bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1); |
| 214 | if (!bf52x_ad73311_snd_device) |
| 215 | return -ENOMEM; |
| 216 | |
| 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); |
| 220 | |
| 221 | if (ret) |
| 222 | platform_device_put(bf52x_ad73311_snd_device); |
| 223 | |
| 224 | return ret; |
| 225 | } |
| 226 | |
| 227 | static void __exit bf5xx_ad73311_exit(void) |
| 228 | { |
| 229 | pr_debug("%s enter\n", __func__); |
| 230 | platform_device_unregister(bf52x_ad73311_snd_device); |
| 231 | } |
| 232 | |
| 233 | module_init(bf5xx_ad73311_init); |
| 234 | module_exit(bf5xx_ad73311_exit); |
| 235 | |
| 236 | /* Module information */ |
| 237 | MODULE_AUTHOR("Cliff Cai"); |
| 238 | MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin"); |
| 239 | MODULE_LICENSE("GPL"); |
| 240 | |