1/*
2 * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
3 *			   twl6040 codec
4 *
5 * Author: Misael Lopez Cruz <misael.lopez@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19 * 02110-1301 USA
20 *
21 */
22
23#include <linux/clk.h>
24#include <linux/platform_device.h>
25#include <linux/mfd/twl6040.h>
26#include <linux/module.h>
27#include <linux/of.h>
28
29#include <sound/core.h>
30#include <sound/pcm.h>
31#include <sound/soc.h>
32#include <sound/jack.h>
33
34#include "omap-dmic.h"
35#include "omap-mcpdm.h"
36#include "../codecs/twl6040.h"
37
38struct abe_twl6040 {
39	int	jack_detection;	/* board can detect jack events */
40	int	mclk_freq;	/* MCLK frequency speed for twl6040 */
41
42	struct platform_device *dmic_codec_dev;
43};
44
45static int omap_abe_hw_params(struct snd_pcm_substream *substream,
46	struct snd_pcm_hw_params *params)
47{
48	struct snd_soc_pcm_runtime *rtd = substream->private_data;
49	struct snd_soc_dai *codec_dai = rtd->codec_dai;
50	struct snd_soc_card *card = rtd->card;
51	struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
52	int clk_id, freq;
53	int ret;
54
55	clk_id = twl6040_get_clk_id(rtd->codec);
56	if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
57		freq = priv->mclk_freq;
58	else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
59		freq = 32768;
60	else
61		return -EINVAL;
62
63	/* set the codec mclk */
64	ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
65				SND_SOC_CLOCK_IN);
66	if (ret) {
67		printk(KERN_ERR "can't set codec system clock\n");
68		return ret;
69	}
70	return ret;
71}
72
73static struct snd_soc_ops omap_abe_ops = {
74	.hw_params = omap_abe_hw_params,
75};
76
77static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
78	struct snd_pcm_hw_params *params)
79{
80	struct snd_soc_pcm_runtime *rtd = substream->private_data;
81	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
82	int ret = 0;
83
84	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
85				     19200000, SND_SOC_CLOCK_IN);
86	if (ret < 0) {
87		printk(KERN_ERR "can't set DMIC cpu system clock\n");
88		return ret;
89	}
90	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
91				     SND_SOC_CLOCK_OUT);
92	if (ret < 0) {
93		printk(KERN_ERR "can't set DMIC output clock\n");
94		return ret;
95	}
96	return 0;
97}
98
99static struct snd_soc_ops omap_abe_dmic_ops = {
100	.hw_params = omap_abe_dmic_hw_params,
101};
102
103/* Headset jack */
104static struct snd_soc_jack hs_jack;
105
106/*Headset jack detection DAPM pins */
107static struct snd_soc_jack_pin hs_jack_pins[] = {
108	{
109		.pin = "Headset Mic",
110		.mask = SND_JACK_MICROPHONE,
111	},
112	{
113		.pin = "Headset Stereophone",
114		.mask = SND_JACK_HEADPHONE,
115	},
116};
117
118/* SDP4430 machine DAPM */
119static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
120	/* Outputs */
121	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
122	SND_SOC_DAPM_SPK("Earphone Spk", NULL),
123	SND_SOC_DAPM_SPK("Ext Spk", NULL),
124	SND_SOC_DAPM_LINE("Line Out", NULL),
125	SND_SOC_DAPM_SPK("Vibrator", NULL),
126
127	/* Inputs */
128	SND_SOC_DAPM_MIC("Headset Mic", NULL),
129	SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
130	SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
131	SND_SOC_DAPM_LINE("Line In", NULL),
132
133	/* Digital microphones */
134	SND_SOC_DAPM_MIC("Digital Mic", NULL),
135};
136
137static const struct snd_soc_dapm_route audio_map[] = {
138	/* Routings for outputs */
139	{"Headset Stereophone", NULL, "HSOL"},
140	{"Headset Stereophone", NULL, "HSOR"},
141
142	{"Earphone Spk", NULL, "EP"},
143
144	{"Ext Spk", NULL, "HFL"},
145	{"Ext Spk", NULL, "HFR"},
146
147	{"Line Out", NULL, "AUXL"},
148	{"Line Out", NULL, "AUXR"},
149
150	{"Vibrator", NULL, "VIBRAL"},
151	{"Vibrator", NULL, "VIBRAR"},
152
153	/* Routings for inputs */
154	{"HSMIC", NULL, "Headset Mic"},
155	{"Headset Mic", NULL, "Headset Mic Bias"},
156
157	{"MAINMIC", NULL, "Main Handset Mic"},
158	{"Main Handset Mic", NULL, "Main Mic Bias"},
159
160	{"SUBMIC", NULL, "Sub Handset Mic"},
161	{"Sub Handset Mic", NULL, "Main Mic Bias"},
162
163	{"AFML", NULL, "Line In"},
164	{"AFMR", NULL, "Line In"},
165};
166
167static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
168{
169	struct snd_soc_codec *codec = rtd->codec;
170	struct snd_soc_card *card = rtd->card;
171	struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
172	int hs_trim;
173	int ret = 0;
174
175	/*
176	 * Configure McPDM offset cancellation based on the HSOTRIM value from
177	 * twl6040.
178	 */
179	hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
180	omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
181					TWL6040_HSF_TRIM_RIGHT(hs_trim));
182
183	/* Headset jack detection only if it is supported */
184	if (priv->jack_detection) {
185		ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
186					    SND_JACK_HEADSET, &hs_jack,
187					    hs_jack_pins,
188					    ARRAY_SIZE(hs_jack_pins));
189		if (ret)
190			return ret;
191
192		twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
193	}
194
195	return 0;
196}
197
198static const struct snd_soc_dapm_route dmic_audio_map[] = {
199	{"DMic", NULL, "Digital Mic"},
200	{"Digital Mic", NULL, "Digital Mic1 Bias"},
201};
202
203static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
204{
205	struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
206
207	return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
208				ARRAY_SIZE(dmic_audio_map));
209}
210
211/* Digital audio interface glue - connects codec <--> CPU */
212static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
213	{
214		.name = "TWL6040",
215		.stream_name = "TWL6040",
216		.codec_dai_name = "twl6040-legacy",
217		.codec_name = "twl6040-codec",
218		.init = omap_abe_twl6040_init,
219		.ops = &omap_abe_ops,
220	},
221	{
222		.name = "DMIC",
223		.stream_name = "DMIC Capture",
224		.codec_dai_name = "dmic-hifi",
225		.codec_name = "dmic-codec",
226		.init = omap_abe_dmic_init,
227		.ops = &omap_abe_dmic_ops,
228	},
229};
230
231/* Audio machine driver */
232static struct snd_soc_card omap_abe_card = {
233	.owner = THIS_MODULE,
234
235	.dapm_widgets = twl6040_dapm_widgets,
236	.num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
237	.dapm_routes = audio_map,
238	.num_dapm_routes = ARRAY_SIZE(audio_map),
239};
240
241static int omap_abe_probe(struct platform_device *pdev)
242{
243	struct device_node *node = pdev->dev.of_node;
244	struct snd_soc_card *card = &omap_abe_card;
245	struct device_node *dai_node;
246	struct abe_twl6040 *priv;
247	int num_links = 0;
248	int ret = 0;
249
250	if (!node) {
251		dev_err(&pdev->dev, "of node is missing.\n");
252		return -ENODEV;
253	}
254
255	card->dev = &pdev->dev;
256
257	priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
258	if (priv == NULL)
259		return -ENOMEM;
260
261	priv->dmic_codec_dev = ERR_PTR(-EINVAL);
262
263	if (snd_soc_of_parse_card_name(card, "ti,model")) {
264		dev_err(&pdev->dev, "Card name is not provided\n");
265		return -ENODEV;
266	}
267
268	ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
269	if (ret) {
270		dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
271		return ret;
272	}
273
274	dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
275	if (!dai_node) {
276		dev_err(&pdev->dev, "McPDM node is not provided\n");
277		return -EINVAL;
278	}
279	abe_twl6040_dai_links[0].cpu_of_node = dai_node;
280	abe_twl6040_dai_links[0].platform_of_node = dai_node;
281
282	dai_node = of_parse_phandle(node, "ti,dmic", 0);
283	if (dai_node) {
284		num_links = 2;
285		abe_twl6040_dai_links[1].cpu_of_node = dai_node;
286		abe_twl6040_dai_links[1].platform_of_node = dai_node;
287
288		priv->dmic_codec_dev = platform_device_register_simple(
289						"dmic-codec", -1, NULL, 0);
290		if (IS_ERR(priv->dmic_codec_dev)) {
291			dev_err(&pdev->dev, "Can't instantiate dmic-codec\n");
292			return PTR_ERR(priv->dmic_codec_dev);
293		}
294	} else {
295		num_links = 1;
296	}
297
298	priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
299	of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
300	if (!priv->mclk_freq) {
301		dev_err(&pdev->dev, "MCLK frequency not provided\n");
302		ret = -EINVAL;
303		goto err_unregister;
304	}
305
306	card->fully_routed = 1;
307
308	if (!priv->mclk_freq) {
309		dev_err(&pdev->dev, "MCLK frequency missing\n");
310		ret = -ENODEV;
311		goto err_unregister;
312	}
313
314	card->dai_link = abe_twl6040_dai_links;
315	card->num_links = num_links;
316
317	snd_soc_card_set_drvdata(card, priv);
318
319	ret = snd_soc_register_card(card);
320	if (ret) {
321		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
322			ret);
323		goto err_unregister;
324	}
325
326	return 0;
327
328err_unregister:
329	if (!IS_ERR(priv->dmic_codec_dev))
330		platform_device_unregister(priv->dmic_codec_dev);
331
332	return ret;
333}
334
335static int omap_abe_remove(struct platform_device *pdev)
336{
337	struct snd_soc_card *card = platform_get_drvdata(pdev);
338	struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
339
340	snd_soc_unregister_card(card);
341
342	if (!IS_ERR(priv->dmic_codec_dev))
343		platform_device_unregister(priv->dmic_codec_dev);
344
345	return 0;
346}
347
348static const struct of_device_id omap_abe_of_match[] = {
349	{.compatible = "ti,abe-twl6040", },
350	{ },
351};
352MODULE_DEVICE_TABLE(of, omap_abe_of_match);
353
354static struct platform_driver omap_abe_driver = {
355	.driver = {
356		.name = "omap-abe-twl6040",
357		.pm = &snd_soc_pm_ops,
358		.of_match_table = omap_abe_of_match,
359	},
360	.probe = omap_abe_probe,
361	.remove = omap_abe_remove,
362};
363
364module_platform_driver(omap_abe_driver);
365
366MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
367MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
368MODULE_LICENSE("GPL");
369MODULE_ALIAS("platform:omap-abe-twl6040");
370