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authorGrazvydas Ignotas <notasas@gmail.com>2008-12-04 15:39:54 -0500
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-05 11:27:48 -0500
commit68fb740774a429ecbccd4d8b3287cf4883ad3ec2 (patch)
tree6726dcb41031447100619ca26191a704e00e7b10 /sound/soc
parent32c8dabc97d436582298ebd0e33af041c69f5a4b (diff)
ASoC: Add support for OMAP3 Pandora
This patch adds basic support for OMAP3 Pandora. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/omap/Kconfig8
-rw-r--r--sound/soc/omap/Makefile2
-rw-r--r--sound/soc/omap/omap3pandora.c311
3 files changed, 321 insertions, 0 deletions
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index da39f27c6613..a7b1d77b2105 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -46,3 +46,11 @@ config SND_OMAP_SOC_SDP3430
46 help 46 help
47 Say Y if you want to add support for SoC audio on Texas Instruments 47 Say Y if you want to add support for SoC audio on Texas Instruments
48 SDP3430. 48 SDP3430.
49
50config SND_OMAP_SOC_OMAP3_PANDORA
51 tristate "SoC Audio support for OMAP3 Pandora"
52 depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP3_PANDORA
53 select SND_OMAP_SOC_MCBSP
54 select SND_SOC_TWL4030
55 help
56 Say Y if you want to add support for SoC audio on the OMAP3 Pandora.
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index 29cf3a856c89..76fedd96e365 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -11,9 +11,11 @@ snd-soc-osk5912-objs := osk5912.o
11snd-soc-overo-objs := overo.o 11snd-soc-overo-objs := overo.o
12snd-soc-omap2evm-objs := omap2evm.o 12snd-soc-omap2evm-objs := omap2evm.o
13snd-soc-sdp3430-objs := sdp3430.o 13snd-soc-sdp3430-objs := sdp3430.o
14snd-soc-omap3pandora-objs := omap3pandora.o
14 15
15obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o 16obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
16obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o 17obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
17obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o 18obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
18obj-$(CONFIG_MACH_OMAP2EVM) += snd-soc-omap2evm.o 19obj-$(CONFIG_MACH_OMAP2EVM) += snd-soc-omap2evm.o
19obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o 20obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
21obj-$(CONFIG_SND_OMAP_SOC_OMAP3_PANDORA) += snd-soc-omap3pandora.o
diff --git a/sound/soc/omap/omap3pandora.c b/sound/soc/omap/omap3pandora.c
new file mode 100644
index 000000000000..bd91594496b1
--- /dev/null
+++ b/sound/soc/omap/omap3pandora.c
@@ -0,0 +1,311 @@
1/*
2 * omap3pandora.c -- SoC audio for Pandora Handheld Console
3 *
4 * Author: GraÅžvydas Ignotas <notasas@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22#include <linux/clk.h>
23#include <linux/platform_device.h>
24#include <linux/gpio.h>
25#include <linux/delay.h>
26
27#include <sound/core.h>
28#include <sound/pcm.h>
29#include <sound/soc.h>
30#include <sound/soc-dapm.h>
31
32#include <asm/mach-types.h>
33
34#include "omap-mcbsp.h"
35#include "omap-pcm.h"
36#include "../codecs/twl4030.h"
37
38#define OMAP3_PANDORA_DAC_POWER_GPIO 118
39#define OMAP3_PANDORA_AMP_POWER_GPIO 14
40
41#define PREFIX "ASoC omap3pandora: "
42
43static int omap3pandora_cmn_hw_params(struct snd_soc_dai *codec_dai,
44 struct snd_soc_dai *cpu_dai, unsigned int fmt)
45{
46 int ret;
47
48 /* Set codec DAI configuration */
49 ret = snd_soc_dai_set_fmt(codec_dai, fmt);
50 if (ret < 0) {
51 pr_err(PREFIX "can't set codec DAI configuration\n");
52 return ret;
53 }
54
55 /* Set cpu DAI configuration */
56 ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
57 if (ret < 0) {
58 pr_err(PREFIX "can't set cpu DAI configuration\n");
59 return ret;
60 }
61
62 /* Set the codec system clock for DAC and ADC */
63 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
64 SND_SOC_CLOCK_IN);
65 if (ret < 0) {
66 pr_err(PREFIX "can't set codec system clock\n");
67 return ret;
68 }
69
70 /* Set McBSP clock to external */
71 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, 0,
72 SND_SOC_CLOCK_IN);
73 if (ret < 0) {
74 pr_err(PREFIX "can't set cpu system clock\n");
75 return ret;
76 }
77
78 ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
79 if (ret < 0) {
80 pr_err(PREFIX "can't set SRG clock divider\n");
81 return ret;
82 }
83
84 return 0;
85}
86
87static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
88 struct snd_pcm_hw_params *params)
89{
90 struct snd_soc_pcm_runtime *rtd = substream->private_data;
91 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
92 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
93
94 return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
95 SND_SOC_DAIFMT_I2S |
96 SND_SOC_DAIFMT_IB_NF |
97 SND_SOC_DAIFMT_CBS_CFS);
98}
99
100static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
101 struct snd_pcm_hw_params *params)
102{
103 struct snd_soc_pcm_runtime *rtd = substream->private_data;
104 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
105 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
106
107 return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
108 SND_SOC_DAIFMT_I2S |
109 SND_SOC_DAIFMT_NB_NF |
110 SND_SOC_DAIFMT_CBS_CFS);
111}
112
113static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
114 struct snd_kcontrol *k, int event)
115{
116 if (SND_SOC_DAPM_EVENT_ON(event)) {
117 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
118 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
119 } else {
120 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
121 mdelay(1);
122 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
123 }
124
125 return 0;
126}
127
128/*
129 * Audio paths on Pandora board:
130 *
131 * |O| ---> PCM DAC +-> AMP -> Headphone Jack
132 * |M| A +--------> Line Out
133 * |A| <~~clk~~+
134 * |P| <--- TWL4030 <--------- Line In and MICs
135 */
136static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
137 SND_SOC_DAPM_DAC("PCM DAC", "Playback", SND_SOC_NOPM, 0, 0),
138 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
139 0, 0, NULL, 0, omap3pandora_hp_event,
140 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
141 SND_SOC_DAPM_HP("Headphone Jack", NULL),
142 SND_SOC_DAPM_LINE("Line Out", NULL),
143};
144
145static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
146 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
147 SND_SOC_DAPM_MIC("Mic (external)", NULL),
148 SND_SOC_DAPM_LINE("Line In", NULL),
149};
150
151static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
152 {"Headphone Amplifier", NULL, "PCM DAC"},
153 {"Line Out", NULL, "PCM DAC"},
154 {"Headphone Jack", NULL, "Headphone Amplifier"},
155};
156
157static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
158 {"INL", NULL, "Line In"},
159 {"INR", NULL, "Line In"},
160 {"INL", NULL, "Mic (Internal)"},
161 {"INR", NULL, "Mic (external)"},
162};
163
164static int omap3pandora_out_init(struct snd_soc_codec *codec)
165{
166 int ret;
167
168 ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
169 ARRAY_SIZE(omap3pandora_out_dapm_widgets));
170 if (ret < 0)
171 return ret;
172
173 snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
174 ARRAY_SIZE(omap3pandora_out_map));
175
176 return snd_soc_dapm_sync(codec);
177}
178
179static int omap3pandora_in_init(struct snd_soc_codec *codec)
180{
181 int ret;
182
183 ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
184 ARRAY_SIZE(omap3pandora_in_dapm_widgets));
185 if (ret < 0)
186 return ret;
187
188 snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
189 ARRAY_SIZE(omap3pandora_in_map));
190
191 return snd_soc_dapm_sync(codec);
192}
193
194static struct snd_soc_ops omap3pandora_out_ops = {
195 .hw_params = omap3pandora_out_hw_params,
196};
197
198static struct snd_soc_ops omap3pandora_in_ops = {
199 .hw_params = omap3pandora_in_hw_params,
200};
201
202/* Digital audio interface glue - connects codec <--> CPU */
203static struct snd_soc_dai_link omap3pandora_dai[] = {
204 {
205 .name = "PCM1773",
206 .stream_name = "HiFi Out",
207 .cpu_dai = &omap_mcbsp_dai[0],
208 .codec_dai = &twl4030_dai,
209 .ops = &omap3pandora_out_ops,
210 .init = omap3pandora_out_init,
211 }, {
212 .name = "TWL4030",
213 .stream_name = "Line/Mic In",
214 .cpu_dai = &omap_mcbsp_dai[1],
215 .codec_dai = &twl4030_dai,
216 .ops = &omap3pandora_in_ops,
217 .init = omap3pandora_in_init,
218 }
219};
220
221/* SoC card */
222static struct snd_soc_card snd_soc_card_omap3pandora = {
223 .name = "omap3pandora",
224 .platform = &omap_soc_platform,
225 .dai_link = omap3pandora_dai,
226 .num_links = ARRAY_SIZE(omap3pandora_dai),
227};
228
229/* Audio subsystem */
230static struct snd_soc_device omap3pandora_snd_data = {
231 .card = &snd_soc_card_omap3pandora,
232 .codec_dev = &soc_codec_dev_twl4030,
233};
234
235static struct platform_device *omap3pandora_snd_device;
236
237static int __init omap3pandora_soc_init(void)
238{
239 int ret;
240
241 if (!machine_is_omap3_pandora()) {
242 pr_debug(PREFIX "Not OMAP3 Pandora\n");
243 return -ENODEV;
244 }
245 pr_info("OMAP3 Pandora SoC init\n");
246
247 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
248 if (ret) {
249 pr_err(PREFIX "Failed to get DAC power GPIO\n");
250 return ret;
251 }
252
253 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
254 if (ret) {
255 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
256 goto fail0;
257 }
258
259 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
260 if (ret) {
261 pr_err(PREFIX "Failed to get amp power GPIO\n");
262 goto fail0;
263 }
264
265 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
266 if (ret) {
267 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
268 goto fail1;
269 }
270
271 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
272 if (omap3pandora_snd_device == NULL) {
273 pr_err(PREFIX "Platform device allocation failed\n");
274 ret = -ENOMEM;
275 goto fail1;
276 }
277
278 platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
279 omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
280 *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
281 *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */
282
283 ret = platform_device_add(omap3pandora_snd_device);
284 if (ret) {
285 pr_err(PREFIX "Unable to add platform device\n");
286 goto fail2;
287 }
288
289 return 0;
290
291fail2:
292 platform_device_put(omap3pandora_snd_device);
293fail1:
294 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
295fail0:
296 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
297 return ret;
298}
299module_init(omap3pandora_soc_init);
300
301static void __exit omap3pandora_soc_exit(void)
302{
303 platform_device_unregister(omap3pandora_snd_device);
304 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
305 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
306}
307module_exit(omap3pandora_soc_exit);
308
309MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
310MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
311MODULE_LICENSE("GPL");