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authorapatard@mandriva.com <apatard@mandriva.com>2010-05-31 07:49:14 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-05-31 08:16:37 -0400
commitf9b95980f87f021f8c69646738929189838ad035 (patch)
tree99ea04355647ccf423786804ddb56131d618c448 /sound/soc/kirkwood
parent492e2bf141478e2c1ce3abfda381f73d1f2108f5 (diff)
ASoC: kirkwood: Add i2s support
This patch enables support for the i2s controller available on kirkwood platforms Signed-off-by: Arnaud Patard <apatard@mandriva.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/kirkwood')
-rw-r--r--sound/soc/kirkwood/Kconfig11
-rw-r--r--sound/soc/kirkwood/Makefile6
-rw-r--r--sound/soc/kirkwood/kirkwood-dma.c383
-rw-r--r--sound/soc/kirkwood/kirkwood-dma.h17
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.c485
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.h17
-rw-r--r--sound/soc/kirkwood/kirkwood.h126
7 files changed, 1045 insertions, 0 deletions
diff --git a/sound/soc/kirkwood/Kconfig b/sound/soc/kirkwood/Kconfig
new file mode 100644
index 000000000000..5e151544cec1
--- /dev/null
+++ b/sound/soc/kirkwood/Kconfig
@@ -0,0 +1,11 @@
1config SND_KIRKWOOD_SOC
2 tristate "SoC Audio for the Marvell Kirkwood chip"
3 depends on ARCH_KIRKWOOD
4 help
5 Say Y or M if you want to add support for codecs attached to
6 the Kirkwood I2S interface. You will also need to select the
7 audio interfaces to support below.
8
9config SND_KIRKWOOD_SOC_I2S
10 tristate
11
diff --git a/sound/soc/kirkwood/Makefile b/sound/soc/kirkwood/Makefile
new file mode 100644
index 000000000000..89dd3e19e159
--- /dev/null
+++ b/sound/soc/kirkwood/Makefile
@@ -0,0 +1,6 @@
1snd-soc-kirkwood-objs := kirkwood-dma.o
2snd-soc-kirkwood-i2s-objs := kirkwood-i2s.o
3
4obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
5obj-$(CONFIG_SND_KIRKWOOD_SOC_I2S) += snd-soc-kirkwood-i2s.o
6
diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c
new file mode 100644
index 000000000000..a30205be3e2b
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-dma.c
@@ -0,0 +1,383 @@
1/*
2 * kirkwood-dma.c
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/device.h>
15#include <linux/io.h>
16#include <linux/slab.h>
17#include <linux/interrupt.h>
18#include <linux/dma-mapping.h>
19#include <linux/mbus.h>
20#include <sound/soc.h>
21#include "kirkwood-dma.h"
22#include "kirkwood.h"
23
24#define KIRKWOOD_RATES \
25 (SNDRV_PCM_RATE_44100 | \
26 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
27#define KIRKWOOD_FORMATS \
28 (SNDRV_PCM_FMTBIT_S16_LE | \
29 SNDRV_PCM_FMTBIT_S24_LE | \
30 SNDRV_PCM_FMTBIT_S32_LE)
31
32struct kirkwood_dma_priv {
33 struct snd_pcm_substream *play_stream;
34 struct snd_pcm_substream *rec_stream;
35 struct kirkwood_dma_data *data;
36};
37
38static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
39 .info = (SNDRV_PCM_INFO_INTERLEAVED |
40 SNDRV_PCM_INFO_MMAP |
41 SNDRV_PCM_INFO_MMAP_VALID |
42 SNDRV_PCM_INFO_BLOCK_TRANSFER |
43 SNDRV_PCM_INFO_PAUSE),
44 .formats = KIRKWOOD_FORMATS,
45 .rates = KIRKWOOD_RATES,
46 .rate_min = 44100,
47 .rate_max = 96000,
48 .channels_min = 1,
49 .channels_max = 2,
50 .buffer_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES * KIRKWOOD_SND_MAX_PERIODS,
51 .period_bytes_min = KIRKWOOD_SND_MIN_PERIOD_BYTES,
52 .period_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES,
53 .periods_min = KIRKWOOD_SND_MIN_PERIODS,
54 .periods_max = KIRKWOOD_SND_MAX_PERIODS,
55 .fifo_size = 0,
56};
57
58static u64 kirkwood_dma_dmamask = 0xFFFFFFFFUL;
59
60static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id)
61{
62 struct kirkwood_dma_priv *prdata = dev_id;
63 struct kirkwood_dma_data *priv = prdata->data;
64 unsigned long mask, status, cause;
65
66 mask = readl(priv->io + KIRKWOOD_INT_MASK);
67 status = readl(priv->io + KIRKWOOD_INT_CAUSE) & mask;
68
69 cause = readl(priv->io + KIRKWOOD_ERR_CAUSE);
70 if (unlikely(cause)) {
71 printk(KERN_WARNING "%s: got err interrupt 0x%lx\n",
72 __func__, cause);
73 writel(cause, priv->io + KIRKWOOD_ERR_CAUSE);
74 return IRQ_HANDLED;
75 }
76
77 /* we've enabled only bytes interrupts ... */
78 if (status & ~(KIRKWOOD_INT_CAUSE_PLAY_BYTES | \
79 KIRKWOOD_INT_CAUSE_REC_BYTES)) {
80 printk(KERN_WARNING "%s: unexpected interrupt %lx\n",
81 __func__, status);
82 return IRQ_NONE;
83 }
84
85 /* ack int */
86 writel(status, priv->io + KIRKWOOD_INT_CAUSE);
87
88 if (status & KIRKWOOD_INT_CAUSE_PLAY_BYTES)
89 snd_pcm_period_elapsed(prdata->play_stream);
90
91 if (status & KIRKWOOD_INT_CAUSE_REC_BYTES)
92 snd_pcm_period_elapsed(prdata->rec_stream);
93
94 return IRQ_HANDLED;
95}
96
97static void kirkwood_dma_conf_mbus_windows(void __iomem *base, int win,
98 unsigned long dma,
99 struct mbus_dram_target_info *dram)
100{
101 int i;
102
103 /* First disable and clear windows */
104 writel(0, base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
105 writel(0, base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
106
107 /* try to find matching cs for current dma address */
108 for (i = 0; i < dram->num_cs; i++) {
109 struct mbus_dram_window *cs = dram->cs + i;
110 if ((cs->base & 0xffff0000) < (dma & 0xffff0000)) {
111 writel(cs->base & 0xffff0000,
112 base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
113 writel(((cs->size - 1) & 0xffff0000) |
114 (cs->mbus_attr << 8) |
115 (dram->mbus_dram_target_id << 4) | 1,
116 base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
117 }
118 }
119}
120
121static int kirkwood_dma_open(struct snd_pcm_substream *substream)
122{
123 int err;
124 struct snd_pcm_runtime *runtime = substream->runtime;
125 struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
126 struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
127 struct kirkwood_dma_data *priv;
128 struct kirkwood_dma_priv *prdata = cpu_dai->private_data;
129 unsigned long addr;
130
131 priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
132 snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
133
134 /* Ensure that all constraints linked to dma burst are fullfilled */
135 err = snd_pcm_hw_constraint_minmax(runtime,
136 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
137 priv->burst * 2,
138 KIRKWOOD_AUDIO_BUF_MAX-1);
139 if (err < 0)
140 return err;
141
142 err = snd_pcm_hw_constraint_step(runtime, 0,
143 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
144 priv->burst);
145 if (err < 0)
146 return err;
147
148 err = snd_pcm_hw_constraint_step(substream->runtime, 0,
149 SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
150 priv->burst);
151 if (err < 0)
152 return err;
153
154 if (soc_runtime->dai->cpu_dai->private_data == NULL) {
155 prdata = kzalloc(sizeof(struct kirkwood_dma_priv), GFP_KERNEL);
156 if (prdata == NULL)
157 return -ENOMEM;
158
159 prdata->data = priv;
160
161 err = request_irq(priv->irq, kirkwood_dma_irq, IRQF_SHARED,
162 "kirkwood-i2s", prdata);
163 if (err) {
164 kfree(prdata);
165 return -EBUSY;
166 }
167
168 soc_runtime->dai->cpu_dai->private_data = prdata;
169
170 /*
171 * Enable Error interrupts. We're only ack'ing them but
172 * it's usefull for diagnostics
173 */
174 writel((unsigned long)-1, priv->io + KIRKWOOD_ERR_MASK);
175 }
176
177 addr = virt_to_phys(substream->dma_buffer.area);
178 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
179 prdata->play_stream = substream;
180 kirkwood_dma_conf_mbus_windows(priv->io,
181 KIRKWOOD_PLAYBACK_WIN, addr, priv->dram);
182 } else {
183 prdata->rec_stream = substream;
184 kirkwood_dma_conf_mbus_windows(priv->io,
185 KIRKWOOD_RECORD_WIN, addr, priv->dram);
186 }
187
188 return 0;
189}
190
191static int kirkwood_dma_close(struct snd_pcm_substream *substream)
192{
193 struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
194 struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
195 struct kirkwood_dma_priv *prdata = cpu_dai->private_data;
196 struct kirkwood_dma_data *priv;
197
198 priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
199
200 if (!prdata || !priv)
201 return 0;
202
203 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
204 prdata->play_stream = NULL;
205 else
206 prdata->rec_stream = NULL;
207
208 if (!prdata->play_stream && !prdata->rec_stream) {
209 writel(0, priv->io + KIRKWOOD_ERR_MASK);
210 free_irq(priv->irq, prdata);
211 kfree(prdata);
212 soc_runtime->dai->cpu_dai->private_data = NULL;
213 }
214
215 return 0;
216}
217
218static int kirkwood_dma_hw_params(struct snd_pcm_substream *substream,
219 struct snd_pcm_hw_params *params)
220{
221 struct snd_pcm_runtime *runtime = substream->runtime;
222
223 snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
224 runtime->dma_bytes = params_buffer_bytes(params);
225
226 return 0;
227}
228
229static int kirkwood_dma_hw_free(struct snd_pcm_substream *substream)
230{
231 snd_pcm_set_runtime_buffer(substream, NULL);
232 return 0;
233}
234
235static int kirkwood_dma_prepare(struct snd_pcm_substream *substream)
236{
237 struct snd_pcm_runtime *runtime = substream->runtime;
238 struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
239 struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
240 struct kirkwood_dma_data *priv;
241 unsigned long size, count;
242
243 priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
244
245 /* compute buffer size in term of "words" as requested in specs */
246 size = frames_to_bytes(runtime, runtime->buffer_size);
247 size = (size>>2)-1;
248 count = snd_pcm_lib_period_bytes(substream);
249
250 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
251 writel(count, priv->io + KIRKWOOD_PLAY_BYTE_INT_COUNT);
252 writel(runtime->dma_addr, priv->io + KIRKWOOD_PLAY_BUF_ADDR);
253 writel(size, priv->io + KIRKWOOD_PLAY_BUF_SIZE);
254 } else {
255 writel(count, priv->io + KIRKWOOD_REC_BYTE_INT_COUNT);
256 writel(runtime->dma_addr, priv->io + KIRKWOOD_REC_BUF_ADDR);
257 writel(size, priv->io + KIRKWOOD_REC_BUF_SIZE);
258 }
259
260
261 return 0;
262}
263
264static snd_pcm_uframes_t kirkwood_dma_pointer(struct snd_pcm_substream
265 *substream)
266{
267 struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
268 struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
269 struct kirkwood_dma_data *priv;
270 snd_pcm_uframes_t count;
271
272 priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
273
274 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
275 count = bytes_to_frames(substream->runtime,
276 readl(priv->io + KIRKWOOD_PLAY_BYTE_COUNT));
277 else
278 count = bytes_to_frames(substream->runtime,
279 readl(priv->io + KIRKWOOD_REC_BYTE_COUNT));
280
281 return count;
282}
283
284struct snd_pcm_ops kirkwood_dma_ops = {
285 .open = kirkwood_dma_open,
286 .close = kirkwood_dma_close,
287 .ioctl = snd_pcm_lib_ioctl,
288 .hw_params = kirkwood_dma_hw_params,
289 .hw_free = kirkwood_dma_hw_free,
290 .prepare = kirkwood_dma_prepare,
291 .pointer = kirkwood_dma_pointer,
292};
293
294static int kirkwood_dma_preallocate_dma_buffer(struct snd_pcm *pcm,
295 int stream)
296{
297 struct snd_pcm_substream *substream = pcm->streams[stream].substream;
298 struct snd_dma_buffer *buf = &substream->dma_buffer;
299 size_t size = kirkwood_dma_snd_hw.buffer_bytes_max;
300
301 buf->dev.type = SNDRV_DMA_TYPE_DEV;
302 buf->dev.dev = pcm->card->dev;
303 buf->area = dma_alloc_coherent(pcm->card->dev, size,
304 &buf->addr, GFP_KERNEL);
305 if (!buf->area)
306 return -ENOMEM;
307 buf->bytes = size;
308 buf->private_data = NULL;
309
310 return 0;
311}
312
313static int kirkwood_dma_new(struct snd_card *card,
314 struct snd_soc_dai *dai, struct snd_pcm *pcm)
315{
316 int ret;
317
318 if (!card->dev->dma_mask)
319 card->dev->dma_mask = &kirkwood_dma_dmamask;
320 if (!card->dev->coherent_dma_mask)
321 card->dev->coherent_dma_mask = 0xffffffff;
322
323 if (dai->playback.channels_min) {
324 ret = kirkwood_dma_preallocate_dma_buffer(pcm,
325 SNDRV_PCM_STREAM_PLAYBACK);
326 if (ret)
327 return ret;
328 }
329
330 if (dai->capture.channels_min) {
331 ret = kirkwood_dma_preallocate_dma_buffer(pcm,
332 SNDRV_PCM_STREAM_CAPTURE);
333 if (ret)
334 return ret;
335 }
336
337 return 0;
338}
339
340static void kirkwood_dma_free_dma_buffers(struct snd_pcm *pcm)
341{
342 struct snd_pcm_substream *substream;
343 struct snd_dma_buffer *buf;
344 int stream;
345
346 for (stream = 0; stream < 2; stream++) {
347 substream = pcm->streams[stream].substream;
348 if (!substream)
349 continue;
350 buf = &substream->dma_buffer;
351 if (!buf->area)
352 continue;
353
354 dma_free_coherent(pcm->card->dev, buf->bytes,
355 buf->area, buf->addr);
356 buf->area = NULL;
357 }
358}
359
360struct snd_soc_platform kirkwood_soc_platform = {
361 .name = "kirkwood-dma",
362 .pcm_ops = &kirkwood_dma_ops,
363 .pcm_new = kirkwood_dma_new,
364 .pcm_free = kirkwood_dma_free_dma_buffers,
365};
366EXPORT_SYMBOL_GPL(kirkwood_soc_platform);
367
368static int __init kirkwood_soc_platform_init(void)
369{
370 return snd_soc_register_platform(&kirkwood_soc_platform);
371}
372module_init(kirkwood_soc_platform_init);
373
374static void __exit kirkwood_soc_platform_exit(void)
375{
376 snd_soc_unregister_platform(&kirkwood_soc_platform);
377}
378module_exit(kirkwood_soc_platform_exit);
379
380MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>");
381MODULE_DESCRIPTION("Marvell Kirkwood Audio DMA module");
382MODULE_LICENSE("GPL");
383
diff --git a/sound/soc/kirkwood/kirkwood-dma.h b/sound/soc/kirkwood/kirkwood-dma.h
new file mode 100644
index 000000000000..ba4454cd34f1
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-dma.h
@@ -0,0 +1,17 @@
1/*
2 * kirkwood-dma.h
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#ifndef _KIRKWOOD_DMA_H
13#define _KIRKWOOD_DMA_H
14
15extern struct snd_soc_platform kirkwood_soc_platform;
16
17#endif
diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
new file mode 100644
index 000000000000..0adc59778d5a
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -0,0 +1,485 @@
1/*
2 * kirkwood-i2s.c
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/io.h>
16#include <linux/slab.h>
17#include <linux/mbus.h>
18#include <linux/delay.h>
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <plat/audio.h>
23#include "kirkwood-i2s.h"
24#include "kirkwood.h"
25
26#define DRV_NAME "kirkwood-i2s"
27
28#define KIRKWOOD_I2S_RATES \
29 (SNDRV_PCM_RATE_44100 | \
30 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
31#define KIRKWOOD_I2S_FORMATS \
32 (SNDRV_PCM_FMTBIT_S16_LE | \
33 SNDRV_PCM_FMTBIT_S24_LE | \
34 SNDRV_PCM_FMTBIT_S32_LE)
35
36
37struct snd_soc_dai kirkwood_i2s_dai;
38static struct kirkwood_dma_data *priv;
39
40static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
41 unsigned int fmt)
42{
43 unsigned long mask;
44 unsigned long value;
45
46 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
47 case SND_SOC_DAIFMT_RIGHT_J:
48 mask = KIRKWOOD_I2S_CTL_RJ;
49 break;
50 case SND_SOC_DAIFMT_LEFT_J:
51 mask = KIRKWOOD_I2S_CTL_LJ;
52 break;
53 case SND_SOC_DAIFMT_I2S:
54 mask = KIRKWOOD_I2S_CTL_I2S;
55 break;
56 default:
57 return -EINVAL;
58 }
59
60 /*
61 * Set same format for playback and record
62 * This avoids some troubles.
63 */
64 value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
65 value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
66 value |= mask;
67 writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
68
69 value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
70 value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
71 value |= mask;
72 writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
73
74 return 0;
75}
76
77static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
78{
79 unsigned long value;
80
81 value = KIRKWOOD_DCO_CTL_OFFSET_0;
82 switch (rate) {
83 default:
84 case 44100:
85 value |= KIRKWOOD_DCO_CTL_FREQ_11;
86 break;
87 case 48000:
88 value |= KIRKWOOD_DCO_CTL_FREQ_12;
89 break;
90 case 96000:
91 value |= KIRKWOOD_DCO_CTL_FREQ_24;
92 break;
93 }
94 writel(value, io + KIRKWOOD_DCO_CTL);
95
96 /* wait for dco locked */
97 do {
98 cpu_relax();
99 value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
100 value &= KIRKWOOD_DCO_SPCR_STATUS;
101 } while (value == 0);
102}
103
104static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
105 struct snd_pcm_hw_params *params,
106 struct snd_soc_dai *dai)
107{
108 unsigned int i2s_reg, reg;
109 unsigned long i2s_value, value;
110
111 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
112 i2s_reg = KIRKWOOD_I2S_PLAYCTL;
113 reg = KIRKWOOD_PLAYCTL;
114 } else {
115 i2s_reg = KIRKWOOD_I2S_RECCTL;
116 reg = KIRKWOOD_RECCTL;
117 }
118
119 /* set dco conf */
120 kirkwood_set_dco(priv->io, params_rate(params));
121
122 i2s_value = readl(priv->io+i2s_reg);
123 i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
124
125 value = readl(priv->io+reg);
126 value &= ~KIRKWOOD_PLAYCTL_SIZE_MASK;
127
128 /*
129 * Size settings in play/rec i2s control regs and play/rec control
130 * regs must be the same.
131 */
132 switch (params_format(params)) {
133 case SNDRV_PCM_FORMAT_S16_LE:
134 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
135 value |= KIRKWOOD_PLAYCTL_SIZE_16_C;
136 break;
137 /*
138 * doesn't work... S20_3LE != kirkwood 20bit format ?
139 *
140 case SNDRV_PCM_FORMAT_S20_3LE:
141 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
142 value |= KIRKWOOD_PLAYCTL_SIZE_20;
143 break;
144 */
145 case SNDRV_PCM_FORMAT_S24_LE:
146 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
147 value |= KIRKWOOD_PLAYCTL_SIZE_24;
148 break;
149 case SNDRV_PCM_FORMAT_S32_LE:
150 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
151 value |= KIRKWOOD_PLAYCTL_SIZE_32;
152 break;
153 default:
154 return -EINVAL;
155 }
156 writel(i2s_value, priv->io+i2s_reg);
157 writel(value, priv->io+reg);
158
159 return 0;
160}
161
162static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
163 int cmd, struct snd_soc_dai *dai)
164{
165 unsigned long value;
166
167 /*
168 * specs says KIRKWOOD_PLAYCTL must be read 2 times before
169 * changing it. So read 1 time here and 1 later.
170 */
171 value = readl(priv->io + KIRKWOOD_PLAYCTL);
172
173 switch (cmd) {
174 case SNDRV_PCM_TRIGGER_START:
175 /* stop audio, enable interrupts */
176 value = readl(priv->io + KIRKWOOD_PLAYCTL);
177 value |= KIRKWOOD_PLAYCTL_PAUSE;
178 writel(value, priv->io + KIRKWOOD_PLAYCTL);
179
180 value = readl(priv->io + KIRKWOOD_INT_MASK);
181 value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
182 writel(value, priv->io + KIRKWOOD_INT_MASK);
183
184 /* configure audio & enable i2s playback */
185 value = readl(priv->io + KIRKWOOD_PLAYCTL);
186 value &= ~KIRKWOOD_PLAYCTL_BURST_MASK;
187 value &= ~(KIRKWOOD_PLAYCTL_PAUSE|KIRKWOOD_PLAYCTL_SPDIF_EN);
188
189 if (priv->burst == 32)
190 value |= KIRKWOOD_PLAYCTL_BURST_32;
191 else
192 value |= KIRKWOOD_PLAYCTL_BURST_128;
193 value |= KIRKWOOD_PLAYCTL_I2S_EN;
194 writel(value, priv->io + KIRKWOOD_PLAYCTL);
195 break;
196
197 case SNDRV_PCM_TRIGGER_STOP:
198 /* stop audio, disable interrupts */
199 value = readl(priv->io + KIRKWOOD_PLAYCTL);
200 value |= KIRKWOOD_PLAYCTL_PAUSE;
201 writel(value, priv->io + KIRKWOOD_PLAYCTL);
202
203 value = readl(priv->io + KIRKWOOD_INT_MASK);
204 value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
205 writel(value, priv->io + KIRKWOOD_INT_MASK);
206
207 /* disable all playbacks */
208 value = readl(priv->io + KIRKWOOD_PLAYCTL);
209 value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
210 writel(value, priv->io + KIRKWOOD_PLAYCTL);
211 break;
212
213 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
214 case SNDRV_PCM_TRIGGER_SUSPEND:
215 value = readl(priv->io + KIRKWOOD_PLAYCTL);
216 value |= KIRKWOOD_PLAYCTL_PAUSE;
217 writel(value, priv->io + KIRKWOOD_PLAYCTL);
218 break;
219
220 case SNDRV_PCM_TRIGGER_RESUME:
221 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
222 value = readl(priv->io + KIRKWOOD_PLAYCTL);
223 value &= ~KIRKWOOD_PLAYCTL_PAUSE;
224 writel(value, priv->io + KIRKWOOD_PLAYCTL);
225 break;
226
227 default:
228 return -EINVAL;
229 }
230
231 return 0;
232}
233
234static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
235 int cmd, struct snd_soc_dai *dai)
236{
237 unsigned long value;
238
239 value = readl(priv->io + KIRKWOOD_RECCTL);
240
241 switch (cmd) {
242 case SNDRV_PCM_TRIGGER_START:
243 /* stop audio, enable interrupts */
244 value = readl(priv->io + KIRKWOOD_RECCTL);
245 value |= KIRKWOOD_RECCTL_PAUSE;
246 writel(value, priv->io + KIRKWOOD_RECCTL);
247
248 value = readl(priv->io + KIRKWOOD_INT_MASK);
249 value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
250 writel(value, priv->io + KIRKWOOD_INT_MASK);
251
252 /* configure audio & enable i2s record */
253 value = readl(priv->io + KIRKWOOD_RECCTL);
254 value &= ~KIRKWOOD_RECCTL_BURST_MASK;
255 value &= ~KIRKWOOD_RECCTL_MONO;
256 value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_SPDIF_EN);
257
258 if (priv->burst == 32)
259 value |= KIRKWOOD_RECCTL_BURST_32;
260 else
261 value |= KIRKWOOD_RECCTL_BURST_128;
262 value |= KIRKWOOD_RECCTL_I2S_EN;
263
264 writel(value, priv->io + KIRKWOOD_RECCTL);
265 break;
266
267 case SNDRV_PCM_TRIGGER_STOP:
268 /* stop audio, disable interrupts */
269 value = readl(priv->io + KIRKWOOD_RECCTL);
270 value |= KIRKWOOD_RECCTL_PAUSE;
271 writel(value, priv->io + KIRKWOOD_RECCTL);
272
273 value = readl(priv->io + KIRKWOOD_INT_MASK);
274 value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
275 writel(value, priv->io + KIRKWOOD_INT_MASK);
276
277 /* disable all records */
278 value = readl(priv->io + KIRKWOOD_RECCTL);
279 value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
280 writel(value, priv->io + KIRKWOOD_RECCTL);
281 break;
282
283 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
284 case SNDRV_PCM_TRIGGER_SUSPEND:
285 value = readl(priv->io + KIRKWOOD_RECCTL);
286 value |= KIRKWOOD_RECCTL_PAUSE;
287 writel(value, priv->io + KIRKWOOD_RECCTL);
288 break;
289
290 case SNDRV_PCM_TRIGGER_RESUME:
291 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
292 value = readl(priv->io + KIRKWOOD_RECCTL);
293 value &= ~KIRKWOOD_RECCTL_PAUSE;
294 writel(value, priv->io + KIRKWOOD_RECCTL);
295 break;
296
297 default:
298 return -EINVAL;
299 break;
300 }
301
302 return 0;
303}
304
305static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
306 struct snd_soc_dai *dai)
307{
308 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
309 return kirkwood_i2s_play_trigger(substream, cmd, dai);
310 else
311 return kirkwood_i2s_rec_trigger(substream, cmd, dai);
312
313 return 0;
314}
315
316static int kirkwood_i2s_probe(struct platform_device *pdev,
317 struct snd_soc_dai *dai)
318{
319 unsigned long value;
320 unsigned int reg_data;
321
322 /* put system in a "safe" state : */
323 /* disable audio interrupts */
324 writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
325 writel(0, priv->io + KIRKWOOD_INT_MASK);
326
327 reg_data = readl(priv->io + 0x1200);
328 reg_data &= (~(0x333FF8));
329 reg_data |= 0x111D18;
330 writel(reg_data, priv->io + 0x1200);
331
332 msleep(500);
333
334 reg_data = readl(priv->io + 0x1200);
335 reg_data &= (~(0x333FF8));
336 reg_data |= 0x111D18;
337 writel(reg_data, priv->io + 0x1200);
338
339 /* disable playback/record */
340 value = readl(priv->io + KIRKWOOD_PLAYCTL);
341 value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN);
342 writel(value, priv->io + KIRKWOOD_PLAYCTL);
343
344 value = readl(priv->io + KIRKWOOD_RECCTL);
345 value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
346 writel(value, priv->io + KIRKWOOD_RECCTL);
347
348 return 0;
349
350}
351
352static void kirkwood_i2s_remove(struct platform_device *pdev,
353 struct snd_soc_dai *dai)
354{
355}
356
357static struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
358 .trigger = kirkwood_i2s_trigger,
359 .hw_params = kirkwood_i2s_hw_params,
360 .set_fmt = kirkwood_i2s_set_fmt,
361};
362
363
364struct snd_soc_dai kirkwood_i2s_dai = {
365 .name = DRV_NAME,
366 .id = 0,
367 .probe = kirkwood_i2s_probe,
368 .remove = kirkwood_i2s_remove,
369 .playback = {
370 .channels_min = 1,
371 .channels_max = 2,
372 .rates = KIRKWOOD_I2S_RATES,
373 .formats = KIRKWOOD_I2S_FORMATS,},
374 .capture = {
375 .channels_min = 1,
376 .channels_max = 2,
377 .rates = KIRKWOOD_I2S_RATES,
378 .formats = KIRKWOOD_I2S_FORMATS,},
379 .ops = &kirkwood_i2s_dai_ops,
380};
381EXPORT_SYMBOL_GPL(kirkwood_i2s_dai);
382
383static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev)
384{
385 struct resource *mem;
386 struct kirkwood_asoc_platform_data *data =
387 pdev->dev.platform_data;
388 int err;
389
390 priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL);
391 if (!priv) {
392 dev_err(&pdev->dev, "allocation failed\n");
393 err = -ENOMEM;
394 goto error;
395 }
396
397 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
398 if (!mem) {
399 dev_err(&pdev->dev, "platform_get_resource failed\n");
400 err = -ENXIO;
401 goto err_alloc;
402 }
403
404 priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME);
405 if (!priv->mem) {
406 dev_err(&pdev->dev, "request_mem_region failed\n");
407 err = -EBUSY;
408 goto error;
409 }
410
411 priv->io = ioremap(priv->mem->start, SZ_16K);
412 if (!priv->io) {
413 dev_err(&pdev->dev, "ioremap failed\n");
414 err = -ENOMEM;
415 goto err_iomem;
416 }
417
418 priv->irq = platform_get_irq(pdev, 0);
419 if (priv->irq <= 0) {
420 dev_err(&pdev->dev, "platform_get_irq failed\n");
421 err = -ENXIO;
422 goto err_ioremap;
423 }
424
425 if (!data || !data->dram) {
426 dev_err(&pdev->dev, "no platform data ?!\n");
427 err = -EINVAL;
428 goto err_ioremap;
429 }
430
431 priv->dram = data->dram;
432 priv->burst = data->burst;
433
434 kirkwood_i2s_dai.capture.dma_data = priv;
435 kirkwood_i2s_dai.playback.dma_data = priv;
436
437 return snd_soc_register_dai(&kirkwood_i2s_dai);
438
439err_ioremap:
440 iounmap(priv->io);
441err_iomem:
442 release_mem_region(priv->mem->start, SZ_16K);
443err_alloc:
444 kfree(priv);
445error:
446 return err;
447}
448
449static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev)
450{
451 if (priv) {
452 iounmap(priv->io);
453 release_mem_region(priv->mem->start, SZ_16K);
454 kfree(priv);
455 }
456 snd_soc_unregister_dai(&kirkwood_i2s_dai);
457 return 0;
458}
459
460static struct platform_driver kirkwood_i2s_driver = {
461 .probe = kirkwood_i2s_dev_probe,
462 .remove = kirkwood_i2s_dev_remove,
463 .driver = {
464 .name = DRV_NAME,
465 .owner = THIS_MODULE,
466 },
467};
468
469static int __init kirkwood_i2s_init(void)
470{
471 return platform_driver_register(&kirkwood_i2s_driver);
472}
473module_init(kirkwood_i2s_init);
474
475static void __exit kirkwood_i2s_exit(void)
476{
477 platform_driver_unregister(&kirkwood_i2s_driver);
478}
479module_exit(kirkwood_i2s_exit);
480
481/* Module information */
482MODULE_AUTHOR("Arnaud Patard, <apatard@mandriva.com>");
483MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
484MODULE_LICENSE("GPL");
485MODULE_ALIAS("platform:kirkwood-i2s");
diff --git a/sound/soc/kirkwood/kirkwood-i2s.h b/sound/soc/kirkwood/kirkwood-i2s.h
new file mode 100644
index 000000000000..c5595c616d7a
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-i2s.h
@@ -0,0 +1,17 @@
1/*
2 * kirkwood-i2s.h
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#ifndef _KIRKWOOD_I2S_H
13#define _KIRKWOOD_I2S_H
14
15extern struct snd_soc_dai kirkwood_i2s_dai;
16
17#endif
diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h
new file mode 100644
index 000000000000..b6e4f68d71dd
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood.h
@@ -0,0 +1,126 @@
1/*
2 * kirkwood.h
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#ifndef _KIRKWOOD_AUDIO_H
13#define _KIRKWOOD_AUDIO_H
14
15#define KIRKWOOD_RECORD_WIN 0
16#define KIRKWOOD_PLAYBACK_WIN 1
17#define KIRKWOOD_MAX_AUDIO_WIN 2
18
19#define KIRKWOOD_AUDIO_WIN_BASE_REG(win) (0xA00 + ((win)<<3))
20#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win) (0xA04 + ((win)<<3))
21
22
23#define KIRKWOOD_RECCTL 0x1000
24#define KIRKWOOD_RECCTL_SPDIF_EN (1<<11)
25#define KIRKWOOD_RECCTL_I2S_EN (1<<10)
26#define KIRKWOOD_RECCTL_PAUSE (1<<9)
27#define KIRKWOOD_RECCTL_MUTE (1<<8)
28#define KIRKWOOD_RECCTL_BURST_MASK (3<<5)
29#define KIRKWOOD_RECCTL_BURST_128 (2<<5)
30#define KIRKWOOD_RECCTL_BURST_32 (1<<5)
31#define KIRKWOOD_RECCTL_MONO (1<<4)
32#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT (1<<3)
33#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT (0<<3)
34#define KIRKWOOD_RECCTL_SIZE_MASK (7<<0)
35#define KIRKWOOD_RECCTL_SIZE_16 (7<<0)
36#define KIRKWOOD_RECCTL_SIZE_16_C (3<<0)
37#define KIRKWOOD_RECCTL_SIZE_20 (2<<0)
38#define KIRKWOOD_RECCTL_SIZE_24 (1<<0)
39#define KIRKWOOD_RECCTL_SIZE_32 (0<<0)
40
41#define KIRKWOOD_REC_BUF_ADDR 0x1004
42#define KIRKWOOD_REC_BUF_SIZE 0x1008
43#define KIRKWOOD_REC_BYTE_COUNT 0x100C
44
45#define KIRKWOOD_PLAYCTL 0x1100
46#define KIRKWOOD_PLAYCTL_PLAY_BUSY (1<<16)
47#define KIRKWOOD_PLAYCTL_BURST_MASK (3<<11)
48#define KIRKWOOD_PLAYCTL_BURST_128 (2<<11)
49#define KIRKWOOD_PLAYCTL_BURST_32 (1<<11)
50#define KIRKWOOD_PLAYCTL_PAUSE (1<<9)
51#define KIRKWOOD_PLAYCTL_SPDIF_MUTE (1<<8)
52#define KIRKWOOD_PLAYCTL_I2S_MUTE (1<<7)
53#define KIRKWOOD_PLAYCTL_SPDIF_EN (1<<4)
54#define KIRKWOOD_PLAYCTL_I2S_EN (1<<3)
55#define KIRKWOOD_PLAYCTL_SIZE_MASK (7<<0)
56#define KIRKWOOD_PLAYCTL_SIZE_16 (7<<0)
57#define KIRKWOOD_PLAYCTL_SIZE_16_C (3<<0)
58#define KIRKWOOD_PLAYCTL_SIZE_20 (2<<0)
59#define KIRKWOOD_PLAYCTL_SIZE_24 (1<<0)
60#define KIRKWOOD_PLAYCTL_SIZE_32 (0<<0)
61
62#define KIRKWOOD_PLAY_BUF_ADDR 0x1104
63#define KIRKWOOD_PLAY_BUF_SIZE 0x1108
64#define KIRKWOOD_PLAY_BYTE_COUNT 0x110C
65
66#define KIRKWOOD_DCO_CTL 0x1204
67#define KIRKWOOD_DCO_CTL_OFFSET_MASK (0xFFF<<2)
68#define KIRKWOOD_DCO_CTL_OFFSET_0 (0x800<<2)
69#define KIRKWOOD_DCO_CTL_FREQ_MASK (3<<0)
70#define KIRKWOOD_DCO_CTL_FREQ_11 (0<<0)
71#define KIRKWOOD_DCO_CTL_FREQ_12 (1<<0)
72#define KIRKWOOD_DCO_CTL_FREQ_24 (2<<0)
73
74#define KIRKWOOD_DCO_SPCR_STATUS 0x120c
75#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK (1<<16)
76
77#define KIRKWOOD_ERR_CAUSE 0x1300
78#define KIRKWOOD_ERR_MASK 0x1304
79
80#define KIRKWOOD_INT_CAUSE 0x1308
81#define KIRKWOOD_INT_MASK 0x130C
82#define KIRKWOOD_INT_CAUSE_PLAY_BYTES (1<<14)
83#define KIRKWOOD_INT_CAUSE_REC_BYTES (1<<13)
84#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END (1<<7)
85#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q (1<<6)
86#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF (1<<5)
87#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q (1<<4)
88#define KIRKWOOD_INT_CAUSE_DMA_REC_END (1<<3)
89#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q (1<<2)
90#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF (1<<1)
91#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q (1<<0)
92
93#define KIRKWOOD_REC_BYTE_INT_COUNT 0x1310
94#define KIRKWOOD_PLAY_BYTE_INT_COUNT 0x1314
95#define KIRKWOOD_BYTE_INT_COUNT_MASK 0xffffff
96
97#define KIRKWOOD_I2S_PLAYCTL 0x2508
98#define KIRKWOOD_I2S_RECCTL 0x2408
99#define KIRKWOOD_I2S_CTL_JUST_MASK (0xf<<26)
100#define KIRKWOOD_I2S_CTL_LJ (0<<26)
101#define KIRKWOOD_I2S_CTL_I2S (5<<26)
102#define KIRKWOOD_I2S_CTL_RJ (8<<26)
103#define KIRKWOOD_I2S_CTL_SIZE_MASK (3<<30)
104#define KIRKWOOD_I2S_CTL_SIZE_16 (3<<30)
105#define KIRKWOOD_I2S_CTL_SIZE_20 (2<<30)
106#define KIRKWOOD_I2S_CTL_SIZE_24 (1<<30)
107#define KIRKWOOD_I2S_CTL_SIZE_32 (0<<30)
108
109#define KIRKWOOD_AUDIO_BUF_MAX (16*1024*1024)
110
111/* Theses values come from the marvell alsa driver */
112/* need to find where they come from */
113#define KIRKWOOD_SND_MIN_PERIODS 8
114#define KIRKWOOD_SND_MAX_PERIODS 16
115#define KIRKWOOD_SND_MIN_PERIOD_BYTES 0x4000
116#define KIRKWOOD_SND_MAX_PERIOD_BYTES 0x4000
117
118struct kirkwood_dma_data {
119 struct resource *mem;
120 void __iomem *io;
121 int irq;
122 int burst;
123 struct mbus_dram_target_info *dram;
124};
125
126#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 04:20:17 -0500