[deliverable/linux.git] / sound / soc / omap / omap3pandora.c

/*
 * omap3pandora.c  --  SoC audio for Pandora Handheld Console
 *
 * Author: Gražvydas Ignotas <notasas@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/delay.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <asm/mach-types.h>

#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/twl4030.h"

#define OMAP3_PANDORA_DAC_POWER_GPIO	118
#define OMAP3_PANDORA_AMP_POWER_GPIO	14

#define PREFIX "ASoC omap3pandora: "

static int omap3pandora_cmn_hw_params(struct snd_soc_dai *codec_dai,
	struct snd_soc_dai *cpu_dai, unsigned int fmt)
{
	int ret;

	/* Set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	if (ret < 0) {
		pr_err(PREFIX "can't set codec DAI configuration\n");
		return ret;
	}

	/* Set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	if (ret < 0) {
		pr_err(PREFIX "can't set cpu DAI configuration\n");
		return ret;
	}

	/* Set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
					    SND_SOC_CLOCK_IN);
	if (ret < 0) {
		pr_err(PREFIX "can't set codec system clock\n");
		return ret;
	}

	/* Set McBSP clock to external */
	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, 0,
					    SND_SOC_CLOCK_IN);
	if (ret < 0) {
		pr_err(PREFIX "can't set cpu system clock\n");
		return ret;
	}

	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
	if (ret < 0) {
		pr_err(PREFIX "can't set SRG clock divider\n");
		return ret;
	}

	return 0;
}

static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

	return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
					  SND_SOC_DAIFMT_I2S |
					  SND_SOC_DAIFMT_IB_NF |
					  SND_SOC_DAIFMT_CBS_CFS);
}

static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

	return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
					  SND_SOC_DAIFMT_I2S |
					  SND_SOC_DAIFMT_NB_NF |
					  SND_SOC_DAIFMT_CBS_CFS);
}

static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
{
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
		gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
	} else {
		gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
		mdelay(1);
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	}

	return 0;
}

/*
 * Audio paths on Pandora board:
 *
 *  |O| ---> PCM DAC +-> AMP -> Headphone Jack
 *  |M|         A    +--------> Line Out
 *  |A| <~~clk~~+
 *  |P| <--- TWL4030 <--------- Line In and MICs
 */
static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("PCM DAC", "Playback", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
			   0, 0, NULL, 0, omap3pandora_hp_event,
			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
};

static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
	SND_SOC_DAPM_MIC("Mic (external)", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
	{"Headphone Amplifier", NULL, "PCM DAC"},
	{"Line Out", NULL, "PCM DAC"},
	{"Headphone Jack", NULL, "Headphone Amplifier"},
};

static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
	{"INL", NULL, "Line In"},
	{"INR", NULL, "Line In"},
	{"INL", NULL, "Mic (Internal)"},
	{"INR", NULL, "Mic (external)"},
};

static int omap3pandora_out_init(struct snd_soc_codec *codec)
{
	int ret;

	ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
				ARRAY_SIZE(omap3pandora_out_dapm_widgets));
	if (ret < 0)
		return ret;

	snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
		ARRAY_SIZE(omap3pandora_out_map));

	return snd_soc_dapm_sync(codec);
}

static int omap3pandora_in_init(struct snd_soc_codec *codec)
{
	int ret;

	ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
				ARRAY_SIZE(omap3pandora_in_dapm_widgets));
	if (ret < 0)
		return ret;

	snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
		ARRAY_SIZE(omap3pandora_in_map));

	return snd_soc_dapm_sync(codec);
}

static struct snd_soc_ops omap3pandora_out_ops = {
	.hw_params = omap3pandora_out_hw_params,
};

static struct snd_soc_ops omap3pandora_in_ops = {
	.hw_params = omap3pandora_in_hw_params,
};

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap3pandora_dai[] = {
	{
		.name = "PCM1773",
		.stream_name = "HiFi Out",
		.cpu_dai = &omap_mcbsp_dai[0],
		.codec_dai = &twl4030_dai,
		.ops = &omap3pandora_out_ops,
		.init = omap3pandora_out_init,
	}, {
		.name = "TWL4030",
		.stream_name = "Line/Mic In",
		.cpu_dai = &omap_mcbsp_dai[1],
		.codec_dai = &twl4030_dai,
		.ops = &omap3pandora_in_ops,
		.init = omap3pandora_in_init,
	}
};

/* SoC card */
static struct snd_soc_card snd_soc_card_omap3pandora = {
	.name = "omap3pandora",
	.platform = &omap_soc_platform,
	.dai_link = omap3pandora_dai,
	.num_links = ARRAY_SIZE(omap3pandora_dai),
};

/* Audio subsystem */
static struct snd_soc_device omap3pandora_snd_data = {
	.card = &snd_soc_card_omap3pandora,
	.codec_dev = &soc_codec_dev_twl4030,
};

static struct platform_device *omap3pandora_snd_device;

static int __init omap3pandora_soc_init(void)
{
	int ret;

	if (!machine_is_omap3_pandora()) {
		pr_debug(PREFIX "Not OMAP3 Pandora\n");
		return -ENODEV;
	}
	pr_info("OMAP3 Pandora SoC init\n");

	ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
	if (ret) {
		pr_err(PREFIX "Failed to get DAC power GPIO\n");
		return ret;
	}

	ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	if (ret) {
		pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
		goto fail0;
	}

	ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
	if (ret) {
		pr_err(PREFIX "Failed to get amp power GPIO\n");
		goto fail0;
	}

	ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	if (ret) {
		pr_err(PREFIX "Failed to set amp power GPIO direction\n");
		goto fail1;
	}

	omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
	if (omap3pandora_snd_device == NULL) {
		pr_err(PREFIX "Platform device allocation failed\n");
		ret = -ENOMEM;
		goto fail1;
	}

	platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
	omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
	*(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
	*(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */

	ret = platform_device_add(omap3pandora_snd_device);
	if (ret) {
		pr_err(PREFIX "Unable to add platform device\n");
		goto fail2;
	}

	return 0;

fail2:
	platform_device_put(omap3pandora_snd_device);
fail1:
	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
fail0:
	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	return ret;
}
module_init(omap3pandora_soc_init);

static void __exit omap3pandora_soc_exit(void)
{
	platform_device_unregister(omap3pandora_snd_device);
	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
}
module_exit(omap3pandora_soc_exit);

MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
MODULE_LICENSE("GPL");
Commit	Line	Data
68fb7407 GI	1	/*
	2	* omap3pandora.c -- SoC audio for Pandora Handheld Console
	3	*
	4	* Author: Gražvydas 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
	43	static 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
87	static 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
100	static 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
113	static 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	*/
136	static 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
145	static 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
151	static 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
157	static 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
164	static 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
179	static 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
194	static struct snd_soc_ops omap3pandora_out_ops = {
195	.hw_params = omap3pandora_out_hw_params,
196	};
197
198	static struct snd_soc_ops omap3pandora_in_ops = {
199	.hw_params = omap3pandora_in_hw_params,
200	};
201
202	/* Digital audio interface glue - connects codec <--> CPU */
203	static 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 */
222	static 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 */
230	static struct snd_soc_device omap3pandora_snd_data = {
231	.card = &snd_soc_card_omap3pandora,
232	.codec_dev = &soc_codec_dev_twl4030,
233	};
234
235	static struct platform_device *omap3pandora_snd_device;
236
237	static 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
291	fail2:
292	platform_device_put(omap3pandora_snd_device);
293	fail1:
294	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
295	fail0:
296	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
297	return ret;
298	}
299	module_init(omap3pandora_soc_init);
300
301	static 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	}
307	module_exit(omap3pandora_soc_exit);
308
309	MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
310	MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
311	MODULE_LICENSE("GPL");