Commit | Line | Data |
---|---|---|
5564b14b CC |
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> | |
5564b14b CC |
38 | #include <sound/pcm_params.h> |
39 | ||
40 | #include <asm/blackfin.h> | |
41 | #include <asm/cacheflush.h> | |
42 | #include <asm/irq.h> | |
43 | #include <asm/dma.h> | |
44 | #include <asm/portmux.h> | |
45 | ||
46 | #include "../codecs/ad73311.h" | |
47 | #include "bf5xx-sport.h" | |
5564b14b CC |
48 | |
49 | #if CONFIG_SND_BF5XX_SPORT_NUM == 0 | |
50 | #define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1 | |
51 | #define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1 | |
52 | #define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2 | |
53 | #define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16 | |
54 | #define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT | |
55 | #else | |
56 | #define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1 | |
57 | #define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1 | |
58 | #define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2 | |
59 | #define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16 | |
60 | #define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT | |
61 | #endif | |
62 | ||
63 | #define GPIO_SE CONFIG_SND_BFIN_AD73311_SE | |
64 | ||
87506549 | 65 | static struct snd_soc_card bf5xx_ad73311; |
5564b14b CC |
66 | |
67 | static int snd_ad73311_startup(void) | |
68 | { | |
69 | pr_debug("%s enter\n", __func__); | |
70 | ||
71 | /* Pull up SE pin on AD73311L */ | |
72 | gpio_set_value(GPIO_SE, 1); | |
73 | return 0; | |
74 | } | |
75 | ||
76 | static int snd_ad73311_configure(void) | |
77 | { | |
78 | unsigned short ctrl_regs[6]; | |
79 | unsigned short status = 0; | |
80 | int count = 0; | |
81 | ||
82 | /* DMCLK = MCLK = 16.384 MHz | |
83 | * SCLK = DMCLK/8 = 2.048 MHz | |
84 | * Sample Rate = DMCLK/2048 = 8 KHz | |
85 | */ | |
86 | ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \ | |
87 | REGB_SCDIV(0) | REGB_DIRATE(0); | |
88 | ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \ | |
89 | REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ; | |
90 | ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \ | |
91 | REGD_IGS(2); | |
92 | ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f); | |
93 | ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ; | |
94 | ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA; | |
95 | ||
96 | local_irq_disable(); | |
97 | snd_ad73311_startup(); | |
98 | udelay(1); | |
99 | ||
100 | bfin_write_SPORT_TCR1(TFSR); | |
101 | bfin_write_SPORT_TCR2(0xF); | |
102 | SSYNC(); | |
103 | ||
104 | /* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to | |
105 | * FIFO before enable SPORT to transfer the data | |
106 | */ | |
107 | for (count = 0; count < 6; count++) | |
108 | bfin_write_SPORT_TX16(ctrl_regs[count]); | |
109 | SSYNC(); | |
110 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN); | |
111 | SSYNC(); | |
112 | ||
113 | /* When TUVF is set, the data is already send out */ | |
67137a5d | 114 | while (!(status & TUVF) && ++count < 10000) { |
5564b14b CC |
115 | udelay(1); |
116 | status = bfin_read_SPORT_STAT(); | |
117 | SSYNC(); | |
118 | } | |
119 | bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN); | |
120 | SSYNC(); | |
121 | local_irq_enable(); | |
122 | ||
67137a5d | 123 | if (count >= 10000) { |
5564b14b CC |
124 | printk(KERN_ERR "ad73311: failed to configure codec\n"); |
125 | return -1; | |
126 | } | |
127 | return 0; | |
128 | } | |
129 | ||
4f6c7e15 | 130 | static int bf5xx_probe(struct snd_soc_card *card) |
5564b14b CC |
131 | { |
132 | int err; | |
133 | if (gpio_request(GPIO_SE, "AD73311_SE")) { | |
134 | printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE); | |
135 | return -EBUSY; | |
136 | } | |
137 | ||
138 | gpio_direction_output(GPIO_SE, 0); | |
139 | ||
140 | err = snd_ad73311_configure(); | |
141 | if (err < 0) | |
142 | return -EFAULT; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
980b0bc6 LPC |
147 | #define BF5XX_AD7311_DAI_FMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | \ |
148 | SND_SOC_DAIFMT_CBM_CFM) | |
5564b14b | 149 | |
2c66cb99 BS |
150 | static struct snd_soc_dai_link bf5xx_ad73311_dai[] = { |
151 | { | |
152 | .name = "ad73311", | |
153 | .stream_name = "AD73311", | |
154 | .cpu_dai_name = "bfin-i2s.0", | |
155 | .codec_dai_name = "ad73311-hifi", | |
156 | .platform_name = "bfin-i2s-pcm-audio", | |
157 | .codec_name = "ad73311", | |
980b0bc6 | 158 | .dai_fmt = BF5XX_AD7311_DAI_FMT, |
2c66cb99 BS |
159 | }, |
160 | { | |
161 | .name = "ad73311", | |
162 | .stream_name = "AD73311", | |
163 | .cpu_dai_name = "bfin-i2s.1", | |
164 | .codec_dai_name = "ad73311-hifi", | |
165 | .platform_name = "bfin-i2s-pcm-audio", | |
166 | .codec_name = "ad73311", | |
980b0bc6 | 167 | .dai_fmt = BF5XX_AD7311_DAI_FMT, |
2c66cb99 | 168 | }, |
5564b14b CC |
169 | }; |
170 | ||
87506549 | 171 | static struct snd_soc_card bf5xx_ad73311 = { |
bfe4ee0a | 172 | .name = "bfin-ad73311", |
30e49530 | 173 | .owner = THIS_MODULE, |
5564b14b | 174 | .probe = bf5xx_probe, |
2c66cb99 | 175 | .dai_link = &bf5xx_ad73311_dai[CONFIG_SND_BF5XX_SPORT_NUM], |
5564b14b CC |
176 | .num_links = 1, |
177 | }; | |
178 | ||
f274143f | 179 | static struct platform_device *bf5xx_ad73311_snd_device; |
5564b14b CC |
180 | |
181 | static int __init bf5xx_ad73311_init(void) | |
182 | { | |
183 | int ret; | |
184 | ||
185 | pr_debug("%s enter\n", __func__); | |
f274143f BS |
186 | bf5xx_ad73311_snd_device = platform_device_alloc("soc-audio", -1); |
187 | if (!bf5xx_ad73311_snd_device) | |
5564b14b CC |
188 | return -ENOMEM; |
189 | ||
f0fba2ad | 190 | platform_set_drvdata(bf5xx_ad73311_snd_device, &bf5xx_ad73311); |
f274143f | 191 | ret = platform_device_add(bf5xx_ad73311_snd_device); |
5564b14b CC |
192 | |
193 | if (ret) | |
f274143f | 194 | platform_device_put(bf5xx_ad73311_snd_device); |
5564b14b CC |
195 | |
196 | return ret; | |
197 | } | |
198 | ||
199 | static void __exit bf5xx_ad73311_exit(void) | |
200 | { | |
201 | pr_debug("%s enter\n", __func__); | |
f274143f | 202 | platform_device_unregister(bf5xx_ad73311_snd_device); |
5564b14b CC |
203 | } |
204 | ||
205 | module_init(bf5xx_ad73311_init); | |
206 | module_exit(bf5xx_ad73311_exit); | |
207 | ||
208 | /* Module information */ | |
209 | MODULE_AUTHOR("Cliff Cai"); | |
210 | MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin"); | |
211 | MODULE_LICENSE("GPL"); | |
212 |