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Viewing changes to soc/intel/mfld_machine.c

  • Committer: Canonistack server
  • Date: 2015-01-22 13:04:34 UTC
  • Revision ID: david.henningsson@canonical.com-20150122130434-q48cfdp8ovzgqhe7
Test run of 623 machines: 3 failing with 3 errors and 0 warnings.

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soc/intel/mfld_machine.c
 
1
/*
 
2
 *  mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
 
3
 *
 
4
 *  Copyright (C) 2010 Intel Corp
 
5
 *  Author: Vinod Koul <vinod.koul@intel.com>
 
6
 *  Author: Harsha Priya <priya.harsha@intel.com>
 
7
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
8
 *
 
9
 *  This program is free software; you can redistribute it and/or modify
 
10
 *  it under the terms of the GNU General Public License as published by
 
11
 *  the Free Software Foundation; version 2 of the License.
 
12
 *
 
13
 *  This program is distributed in the hope that it will be useful, but
 
14
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 
15
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
16
 *  General Public License for more details.
 
17
 *
 
18
 *  You should have received a copy of the GNU General Public License along
 
19
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 
20
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 
21
 *
 
22
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
23
 */
 
24
 
 
25
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
26
 
 
27
#include <linux/init.h>
 
28
#include <linux/device.h>
 
29
#include <linux/slab.h>
 
30
#include <linux/io.h>
 
31
#include <linux/module.h>
 
32
#include <sound/pcm.h>
 
33
#include <sound/pcm_params.h>
 
34
#include <sound/soc.h>
 
35
#include <sound/jack.h>
 
36
#include "../codecs/sn95031.h"
 
37
 
 
38
#define MID_MONO 1
 
39
#define MID_STEREO 2
 
40
#define MID_MAX_CAP 5
 
41
#define MFLD_JACK_INSERT 0x04
 
42
 
 
43
enum soc_mic_bias_zones {
 
44
        MFLD_MV_START = 0,
 
45
        /* mic bias volutage range for Headphones*/
 
46
        MFLD_MV_HP = 400,
 
47
        /* mic bias volutage range for American Headset*/
 
48
        MFLD_MV_AM_HS = 650,
 
49
        /* mic bias volutage range for Headset*/
 
50
        MFLD_MV_HS = 2000,
 
51
        MFLD_MV_UNDEFINED,
 
52
};
 
53
 
 
54
static unsigned int     hs_switch;
 
55
static unsigned int     lo_dac;
 
56
static struct snd_soc_codec *mfld_codec;
 
57
 
 
58
struct mfld_mc_private {
 
59
        void __iomem *int_base;
 
60
        u8 interrupt_status;
 
61
};
 
62
 
 
63
struct snd_soc_jack mfld_jack;
 
64
 
 
65
/*Headset jack detection DAPM pins */
 
66
static struct snd_soc_jack_pin mfld_jack_pins[] = {
 
67
        {
 
68
                .pin = "Headphones",
 
69
                .mask = SND_JACK_HEADPHONE,
 
70
        },
 
71
        {
 
72
                .pin = "AMIC1",
 
73
                .mask = SND_JACK_MICROPHONE,
 
74
        },
 
75
};
 
76
 
 
77
/* jack detection voltage zones */
 
78
static struct snd_soc_jack_zone mfld_zones[] = {
 
79
        {MFLD_MV_START, MFLD_MV_AM_HS, SND_JACK_HEADPHONE},
 
80
        {MFLD_MV_AM_HS, MFLD_MV_HS, SND_JACK_HEADSET},
 
81
};
 
82
 
 
83
/* sound card controls */
 
84
static const char *headset_switch_text[] = {"Earpiece", "Headset"};
 
85
 
 
86
static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};
 
87
 
 
88
static const struct soc_enum headset_enum =
 
89
        SOC_ENUM_SINGLE_EXT(2, headset_switch_text);
 
90
 
 
91
static const struct soc_enum lo_enum =
 
92
        SOC_ENUM_SINGLE_EXT(4, lo_text);
 
93
 
 
94
static int headset_get_switch(struct snd_kcontrol *kcontrol,
 
95
        struct snd_ctl_elem_value *ucontrol)
 
96
{
 
97
        ucontrol->value.integer.value[0] = hs_switch;
 
98
        return 0;
 
99
}
 
100
 
 
101
static int headset_set_switch(struct snd_kcontrol *kcontrol,
 
102
        struct snd_ctl_elem_value *ucontrol)
 
103
{
 
104
        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 
105
        struct snd_soc_dapm_context *dapm = &card->dapm;
 
106
 
 
107
        if (ucontrol->value.integer.value[0] == hs_switch)
 
108
                return 0;
 
109
 
 
110
        snd_soc_dapm_mutex_lock(dapm);
 
111
 
 
112
        if (ucontrol->value.integer.value[0]) {
 
113
                pr_debug("hs_set HS path\n");
 
114
                snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones");
 
115
                snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");
 
116
        } else {
 
117
                pr_debug("hs_set EP path\n");
 
118
                snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");
 
119
                snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT");
 
120
        }
 
121
 
 
122
        snd_soc_dapm_sync_unlocked(dapm);
 
123
 
 
124
        snd_soc_dapm_mutex_unlock(dapm);
 
125
 
 
126
        hs_switch = ucontrol->value.integer.value[0];
 
127
 
 
128
        return 0;
 
129
}
 
130
 
 
131
static void lo_enable_out_pins(struct snd_soc_dapm_context *dapm)
 
132
{
 
133
        snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTL");
 
134
        snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTR");
 
135
        snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTL");
 
136
        snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTR");
 
137
        snd_soc_dapm_enable_pin_unlocked(dapm, "VIB1OUT");
 
138
        snd_soc_dapm_enable_pin_unlocked(dapm, "VIB2OUT");
 
139
        if (hs_switch) {
 
140
                snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones");
 
141
                snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");
 
142
        } else {
 
143
                snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");
 
144
                snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT");
 
145
        }
 
146
}
 
147
 
 
148
static int lo_get_switch(struct snd_kcontrol *kcontrol,
 
149
        struct snd_ctl_elem_value *ucontrol)
 
150
{
 
151
        ucontrol->value.integer.value[0] = lo_dac;
 
152
        return 0;
 
153
}
 
154
 
 
155
static int lo_set_switch(struct snd_kcontrol *kcontrol,
 
156
        struct snd_ctl_elem_value *ucontrol)
 
157
{
 
158
        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 
159
        struct snd_soc_dapm_context *dapm = &card->dapm;
 
160
 
 
161
        if (ucontrol->value.integer.value[0] == lo_dac)
 
162
                return 0;
 
163
 
 
164
        snd_soc_dapm_mutex_lock(dapm);
 
165
 
 
166
        /* we dont want to work with last state of lineout so just enable all
 
167
         * pins and then disable pins not required
 
168
         */
 
169
        lo_enable_out_pins(dapm);
 
170
 
 
171
        switch (ucontrol->value.integer.value[0]) {
 
172
        case 0:
 
173
                pr_debug("set vibra path\n");
 
174
                snd_soc_dapm_disable_pin_unlocked(dapm, "VIB1OUT");
 
175
                snd_soc_dapm_disable_pin_unlocked(dapm, "VIB2OUT");
 
176
                snd_soc_update_bits(mfld_codec, SN95031_LOCTL, 0x66, 0);
 
177
                break;
 
178
 
 
179
        case 1:
 
180
                pr_debug("set hs  path\n");
 
181
                snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");
 
182
                snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");
 
183
                snd_soc_update_bits(mfld_codec, SN95031_LOCTL, 0x66, 0x22);
 
184
                break;
 
185
 
 
186
        case 2:
 
187
                pr_debug("set spkr path\n");
 
188
                snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTL");
 
189
                snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTR");
 
190
                snd_soc_update_bits(mfld_codec, SN95031_LOCTL, 0x66, 0x44);
 
191
                break;
 
192
 
 
193
        case 3:
 
194
                pr_debug("set null path\n");
 
195
                snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTL");
 
196
                snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTR");
 
197
                snd_soc_update_bits(mfld_codec, SN95031_LOCTL, 0x66, 0x66);
 
198
                break;
 
199
        }
 
200
 
 
201
        snd_soc_dapm_sync_unlocked(dapm);
 
202
 
 
203
        snd_soc_dapm_mutex_unlock(dapm);
 
204
 
 
205
        lo_dac = ucontrol->value.integer.value[0];
 
206
        return 0;
 
207
}
 
208
 
 
209
static const struct snd_kcontrol_new mfld_snd_controls[] = {
 
210
        SOC_ENUM_EXT("Playback Switch", headset_enum,
 
211
                        headset_get_switch, headset_set_switch),
 
212
        SOC_ENUM_EXT("Lineout Mux", lo_enum,
 
213
                        lo_get_switch, lo_set_switch),
 
214
};
 
215
 
 
216
static const struct snd_soc_dapm_widget mfld_widgets[] = {
 
217
        SND_SOC_DAPM_HP("Headphones", NULL),
 
218
        SND_SOC_DAPM_MIC("Mic", NULL),
 
219
};
 
220
 
 
221
static const struct snd_soc_dapm_route mfld_map[] = {
 
222
        {"Headphones", NULL, "HPOUTR"},
 
223
        {"Headphones", NULL, "HPOUTL"},
 
224
        {"Mic", NULL, "AMIC1"},
 
225
};
 
226
 
 
227
static void mfld_jack_check(unsigned int intr_status)
 
228
{
 
229
        struct mfld_jack_data jack_data;
 
230
 
 
231
        jack_data.mfld_jack = &mfld_jack;
 
232
        jack_data.intr_id = intr_status;
 
233
 
 
234
        sn95031_jack_detection(&jack_data);
 
235
        /* TODO: add american headset detection post gpiolib support */
 
236
}
 
237
 
 
238
static int mfld_init(struct snd_soc_pcm_runtime *runtime)
 
239
{
 
240
        struct snd_soc_dapm_context *dapm = &runtime->card->dapm;
 
241
        int ret_val;
 
242
 
 
243
        mfld_codec = runtime->codec;
 
244
 
 
245
        /* default is earpiece pin, userspace sets it explcitly */
 
246
        snd_soc_dapm_disable_pin(dapm, "Headphones");
 
247
        /* default is lineout NC, userspace sets it explcitly */
 
248
        snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
 
249
        snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
 
250
        lo_dac = 3;
 
251
        hs_switch = 0;
 
252
        /* we dont use linein in this so set to NC */
 
253
        snd_soc_dapm_disable_pin(dapm, "LINEINL");
 
254
        snd_soc_dapm_disable_pin(dapm, "LINEINR");
 
255
 
 
256
        /* Headset and button jack detection */
 
257
        ret_val = snd_soc_jack_new(mfld_codec, "Intel(R) MID Audio Jack",
 
258
                        SND_JACK_HEADSET | SND_JACK_BTN_0 |
 
259
                        SND_JACK_BTN_1, &mfld_jack);
 
260
        if (ret_val) {
 
261
                pr_err("jack creation failed\n");
 
262
                return ret_val;
 
263
        }
 
264
 
 
265
        ret_val = snd_soc_jack_add_pins(&mfld_jack,
 
266
                        ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins);
 
267
        if (ret_val) {
 
268
                pr_err("adding jack pins failed\n");
 
269
                return ret_val;
 
270
        }
 
271
        ret_val = snd_soc_jack_add_zones(&mfld_jack,
 
272
                        ARRAY_SIZE(mfld_zones), mfld_zones);
 
273
        if (ret_val) {
 
274
                pr_err("adding jack zones failed\n");
 
275
                return ret_val;
 
276
        }
 
277
 
 
278
        /* we want to check if anything is inserted at boot,
 
279
         * so send a fake event to codec and it will read adc
 
280
         * to find if anything is there or not */
 
281
        mfld_jack_check(MFLD_JACK_INSERT);
 
282
        return ret_val;
 
283
}
 
284
 
 
285
static struct snd_soc_dai_link mfld_msic_dailink[] = {
 
286
        {
 
287
                .name = "Medfield Headset",
 
288
                .stream_name = "Headset",
 
289
                .cpu_dai_name = "Headset-cpu-dai",
 
290
                .codec_dai_name = "SN95031 Headset",
 
291
                .codec_name = "sn95031",
 
292
                .platform_name = "sst-platform",
 
293
                .init = mfld_init,
 
294
        },
 
295
        {
 
296
                .name = "Medfield Speaker",
 
297
                .stream_name = "Speaker",
 
298
                .cpu_dai_name = "Speaker-cpu-dai",
 
299
                .codec_dai_name = "SN95031 Speaker",
 
300
                .codec_name = "sn95031",
 
301
                .platform_name = "sst-platform",
 
302
                .init = NULL,
 
303
        },
 
304
        {
 
305
                .name = "Medfield Vibra",
 
306
                .stream_name = "Vibra1",
 
307
                .cpu_dai_name = "Vibra1-cpu-dai",
 
308
                .codec_dai_name = "SN95031 Vibra1",
 
309
                .codec_name = "sn95031",
 
310
                .platform_name = "sst-platform",
 
311
                .init = NULL,
 
312
        },
 
313
        {
 
314
                .name = "Medfield Haptics",
 
315
                .stream_name = "Vibra2",
 
316
                .cpu_dai_name = "Vibra2-cpu-dai",
 
317
                .codec_dai_name = "SN95031 Vibra2",
 
318
                .codec_name = "sn95031",
 
319
                .platform_name = "sst-platform",
 
320
                .init = NULL,
 
321
        },
 
322
        {
 
323
                .name = "Medfield Compress",
 
324
                .stream_name = "Speaker",
 
325
                .cpu_dai_name = "Compress-cpu-dai",
 
326
                .codec_dai_name = "SN95031 Speaker",
 
327
                .codec_name = "sn95031",
 
328
                .platform_name = "sst-platform",
 
329
                .init = NULL,
 
330
        },
 
331
};
 
332
 
 
333
/* SoC card */
 
334
static struct snd_soc_card snd_soc_card_mfld = {
 
335
        .name = "medfield_audio",
 
336
        .owner = THIS_MODULE,
 
337
        .dai_link = mfld_msic_dailink,
 
338
        .num_links = ARRAY_SIZE(mfld_msic_dailink),
 
339
 
 
340
        .controls = mfld_snd_controls,
 
341
        .num_controls = ARRAY_SIZE(mfld_snd_controls),
 
342
        .dapm_widgets = mfld_widgets,
 
343
        .num_dapm_widgets = ARRAY_SIZE(mfld_widgets),
 
344
        .dapm_routes = mfld_map,
 
345
        .num_dapm_routes = ARRAY_SIZE(mfld_map),
 
346
};
 
347
 
 
348
static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev)
 
349
{
 
350
        struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev;
 
351
 
 
352
        memcpy_fromio(&mc_private->interrupt_status,
 
353
                        ((void *)(mc_private->int_base)),
 
354
                        sizeof(u8));
 
355
        return IRQ_WAKE_THREAD;
 
356
}
 
357
 
 
358
static irqreturn_t snd_mfld_jack_detection(int irq, void *data)
 
359
{
 
360
        struct mfld_mc_private *mc_drv_ctx = (struct mfld_mc_private *) data;
 
361
 
 
362
        if (mfld_jack.codec == NULL)
 
363
                return IRQ_HANDLED;
 
364
        mfld_jack_check(mc_drv_ctx->interrupt_status);
 
365
 
 
366
        return IRQ_HANDLED;
 
367
}
 
368
 
 
369
static int snd_mfld_mc_probe(struct platform_device *pdev)
 
370
{
 
371
        int ret_val = 0, irq;
 
372
        struct mfld_mc_private *mc_drv_ctx;
 
373
        struct resource *irq_mem;
 
374
 
 
375
        pr_debug("snd_mfld_mc_probe called\n");
 
376
 
 
377
        /* retrive the irq number */
 
378
        irq = platform_get_irq(pdev, 0);
 
379
 
 
380
        /* audio interrupt base of SRAM location where
 
381
         * interrupts are stored by System FW */
 
382
        mc_drv_ctx = devm_kzalloc(&pdev->dev, sizeof(*mc_drv_ctx), GFP_ATOMIC);
 
383
        if (!mc_drv_ctx) {
 
384
                pr_err("allocation failed\n");
 
385
                return -ENOMEM;
 
386
        }
 
387
 
 
388
        irq_mem = platform_get_resource_byname(
 
389
                                pdev, IORESOURCE_MEM, "IRQ_BASE");
 
390
        if (!irq_mem) {
 
391
                pr_err("no mem resource given\n");
 
392
                return -ENODEV;
 
393
        }
 
394
        mc_drv_ctx->int_base = devm_ioremap_nocache(&pdev->dev, irq_mem->start,
 
395
                                                    resource_size(irq_mem));
 
396
        if (!mc_drv_ctx->int_base) {
 
397
                pr_err("Mapping of cache failed\n");
 
398
                return -ENOMEM;
 
399
        }
 
400
        /* register for interrupt */
 
401
        ret_val = devm_request_threaded_irq(&pdev->dev, irq,
 
402
                        snd_mfld_jack_intr_handler,
 
403
                        snd_mfld_jack_detection,
 
404
                        IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx);
 
405
        if (ret_val) {
 
406
                pr_err("cannot register IRQ\n");
 
407
                return ret_val;
 
408
        }
 
409
        /* register the soc card */
 
410
        snd_soc_card_mfld.dev = &pdev->dev;
 
411
        ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_mfld);
 
412
        if (ret_val) {
 
413
                pr_debug("snd_soc_register_card failed %d\n", ret_val);
 
414
                return ret_val;
 
415
        }
 
416
        platform_set_drvdata(pdev, mc_drv_ctx);
 
417
        pr_debug("successfully exited probe\n");
 
418
        return 0;
 
419
}
 
420
 
 
421
static struct platform_driver snd_mfld_mc_driver = {
 
422
        .driver = {
 
423
                .name = "msic_audio",
 
424
        },
 
425
        .probe = snd_mfld_mc_probe,
 
426
};
 
427
 
 
428
module_platform_driver(snd_mfld_mc_driver);
 
429
 
 
430
MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
 
431
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
 
432
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
 
433
MODULE_LICENSE("GPL v2");
 
434
MODULE_ALIAS("platform:msic-audio");