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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" | |
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50 | |
51 | #if CONFIG_SND_BF5XX_SPORT_NUM == 0 | |
52 | #define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1 | |
53 | #define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1 | |
54 | #define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2 | |
55 | #define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16 | |
56 | #define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT | |
57 | #else | |
58 | #define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1 | |
59 | #define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1 | |
60 | #define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2 | |
61 | #define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16 | |
62 | #define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT | |
63 | #endif | |
64 | ||
65 | #define GPIO_SE CONFIG_SND_BFIN_AD73311_SE | |
66 | ||
87506549 | 67 | static struct snd_soc_card bf5xx_ad73311; |
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68 | |
69 | static int snd_ad73311_startup(void) | |
70 | { | |
71 | pr_debug("%s enter\n", __func__); | |
72 | ||
73 | /* Pull up SE pin on AD73311L */ | |
74 | gpio_set_value(GPIO_SE, 1); | |
75 | return 0; | |
76 | } | |
77 | ||
78 | static int snd_ad73311_configure(void) | |
79 | { | |
80 | unsigned short ctrl_regs[6]; | |
81 | unsigned short status = 0; | |
82 | int count = 0; | |
83 | ||
84 | /* DMCLK = MCLK = 16.384 MHz | |
85 | * SCLK = DMCLK/8 = 2.048 MHz | |
86 | * Sample Rate = DMCLK/2048 = 8 KHz | |
87 | */ | |
88 | ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \ | |
89 | REGB_SCDIV(0) | REGB_DIRATE(0); | |
90 | ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \ | |
91 | REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ; | |
92 | ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \ | |
93 | REGD_IGS(2); | |
94 | ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f); | |
95 | ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ; | |
96 | ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA; | |
97 | ||
98 | local_irq_disable(); | |
99 | snd_ad73311_startup(); | |
100 | udelay(1); | |
101 | ||
102 | bfin_write_SPORT_TCR1(TFSR); | |
103 | bfin_write_SPORT_TCR2(0xF); | |
104 | SSYNC(); | |
105 | ||
106 | /* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to | |
107 | * FIFO before enable SPORT to transfer the data | |
108 | */ | |
109 | for (count = 0; count < 6; count++) | |
110 | bfin_write_SPORT_TX16(ctrl_regs[count]); | |
111 | SSYNC(); | |
112 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN); | |
113 | SSYNC(); | |
114 | ||
115 | /* When TUVF is set, the data is already send out */ | |
67137a5d | 116 | while (!(status & TUVF) && ++count < 10000) { |
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117 | udelay(1); |
118 | status = bfin_read_SPORT_STAT(); | |
119 | SSYNC(); | |
120 | } | |
121 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN); | |
122 | SSYNC(); | |
123 | local_irq_enable(); | |
124 | ||
67137a5d | 125 | if (count >= 10000) { |
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126 | printk(KERN_ERR "ad73311: failed to configure codec\n"); |
127 | return -1; | |
128 | } | |
129 | return 0; | |
130 | } | |
131 | ||
132 | static int bf5xx_probe(struct platform_device *pdev) | |
133 | { | |
134 | int err; | |
135 | if (gpio_request(GPIO_SE, "AD73311_SE")) { | |
136 | printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE); | |
137 | return -EBUSY; | |
138 | } | |
139 | ||
140 | gpio_direction_output(GPIO_SE, 0); | |
141 | ||
142 | err = snd_ad73311_configure(); | |
143 | if (err < 0) | |
144 | return -EFAULT; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream) | |
150 | { | |
151 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 152 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
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153 | |
154 | pr_debug("%s enter\n", __func__); | |
f0fba2ad | 155 | snd_soc_dai_set_drvdata(cpu_dai, sport_handle); |
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156 | return 0; |
157 | } | |
158 | ||
159 | static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream, | |
160 | struct snd_pcm_hw_params *params) | |
161 | { | |
162 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 163 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
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164 | int ret = 0; |
165 | ||
166 | pr_debug("%s rate %d format %x\n", __func__, params_rate(params), | |
167 | params_format(params)); | |
168 | ||
169 | /* set cpu DAI configuration */ | |
9b0db7e7 | 170 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A | |
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171 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); |
172 | if (ret < 0) | |
173 | return ret; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | ||
179 | static struct snd_soc_ops bf5xx_ad73311_ops = { | |
180 | .startup = bf5xx_ad73311_startup, | |
181 | .hw_params = bf5xx_ad73311_hw_params, | |
182 | }; | |
183 | ||
184 | static struct snd_soc_dai_link bf5xx_ad73311_dai = { | |
185 | .name = "ad73311", | |
186 | .stream_name = "AD73311", | |
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187 | .cpu_dai_name = "bf5xx-i2s", |
188 | .codec_dai_name = "ad73311-hifi", | |
189 | .platform_name = "bfin-pcm-audio", | |
190 | .codec_name = "ad73311-codec", | |
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191 | .ops = &bf5xx_ad73311_ops, |
192 | }; | |
193 | ||
87506549 | 194 | static struct snd_soc_card bf5xx_ad73311 = { |
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195 | .name = "bf5xx_ad73311", |
196 | .probe = bf5xx_probe, | |
197 | .dai_link = &bf5xx_ad73311_dai, | |
198 | .num_links = 1, | |
199 | }; | |
200 | ||
f274143f | 201 | static struct platform_device *bf5xx_ad73311_snd_device; |
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202 | |
203 | static int __init bf5xx_ad73311_init(void) | |
204 | { | |
205 | int ret; | |
206 | ||
207 | pr_debug("%s enter\n", __func__); | |
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208 | bf5xx_ad73311_snd_device = platform_device_alloc("soc-audio", -1); |
209 | if (!bf5xx_ad73311_snd_device) | |
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210 | return -ENOMEM; |
211 | ||
f0fba2ad | 212 | platform_set_drvdata(bf5xx_ad73311_snd_device, &bf5xx_ad73311); |
f274143f | 213 | ret = platform_device_add(bf5xx_ad73311_snd_device); |
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214 | |
215 | if (ret) | |
f274143f | 216 | platform_device_put(bf5xx_ad73311_snd_device); |
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217 | |
218 | return ret; | |
219 | } | |
220 | ||
221 | static void __exit bf5xx_ad73311_exit(void) | |
222 | { | |
223 | pr_debug("%s enter\n", __func__); | |
f274143f | 224 | platform_device_unregister(bf5xx_ad73311_snd_device); |
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225 | } |
226 | ||
227 | module_init(bf5xx_ad73311_init); | |
228 | module_exit(bf5xx_ad73311_exit); | |
229 | ||
230 | /* Module information */ | |
231 | MODULE_AUTHOR("Cliff Cai"); | |
232 | MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin"); | |
233 | MODULE_LICENSE("GPL"); | |
234 |