aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/qcom/lpass-apq8016.c
blob: 0aedb3a0a798a8af6616b8f67581c30321bf7016 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
 *
 * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS
 */


#include <linux/clk.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>

#include <dt-bindings/sound/apq8016-lpass.h>
#include "lpass-lpaif-reg.h"
#include "lpass.h"

static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
	[MI2S_PRIMARY] =  {
		.id = MI2S_PRIMARY,
		.name = "Primary MI2S",
		.playback = {
			.stream_name	= "Primary Playback",
			.formats	= SNDRV_PCM_FMTBIT_S16 |
						SNDRV_PCM_FMTBIT_S24 |
						SNDRV_PCM_FMTBIT_S32,
			.rates		= SNDRV_PCM_RATE_8000 |
						SNDRV_PCM_RATE_16000 |
						SNDRV_PCM_RATE_32000 |
						SNDRV_PCM_RATE_48000 |
						SNDRV_PCM_RATE_96000,
			.rate_min	= 8000,
			.rate_max	= 96000,
			.channels_min	= 1,
			.channels_max	= 8,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops    = &asoc_qcom_lpass_cpu_dai_ops,
	},
	[MI2S_SECONDARY] =  {
		.id = MI2S_SECONDARY,
		.name = "Secondary MI2S",
		.playback = {
			.stream_name	= "Secondary Playback",
			.formats	= SNDRV_PCM_FMTBIT_S16 |
						SNDRV_PCM_FMTBIT_S24 |
						SNDRV_PCM_FMTBIT_S32,
			.rates		= SNDRV_PCM_RATE_8000 |
						SNDRV_PCM_RATE_16000 |
						SNDRV_PCM_RATE_32000 |
						SNDRV_PCM_RATE_48000 |
						SNDRV_PCM_RATE_96000,
			.rate_min	= 8000,
			.rate_max	= 96000,
			.channels_min	= 1,
			.channels_max	= 8,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops    = &asoc_qcom_lpass_cpu_dai_ops,
	},
	[MI2S_TERTIARY] =  {
		.id = MI2S_TERTIARY,
		.name = "Tertiary MI2S",
		.capture = {
			.stream_name	= "Tertiary Capture",
			.formats	= SNDRV_PCM_FMTBIT_S16 |
						SNDRV_PCM_FMTBIT_S24 |
						SNDRV_PCM_FMTBIT_S32,
			.rates		= SNDRV_PCM_RATE_8000 |
						SNDRV_PCM_RATE_16000 |
						SNDRV_PCM_RATE_32000 |
						SNDRV_PCM_RATE_48000 |
						SNDRV_PCM_RATE_96000,
			.rate_min	= 8000,
			.rate_max	= 96000,
			.channels_min	= 1,
			.channels_max	= 8,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops    = &asoc_qcom_lpass_cpu_dai_ops,
	},
	[MI2S_QUATERNARY] =  {
		.id = MI2S_QUATERNARY,
		.name = "Quatenary MI2S",
		.playback = {
			.stream_name	= "Quatenary Playback",
			.formats	= SNDRV_PCM_FMTBIT_S16 |
						SNDRV_PCM_FMTBIT_S24 |
						SNDRV_PCM_FMTBIT_S32,
			.rates		= SNDRV_PCM_RATE_8000 |
						SNDRV_PCM_RATE_16000 |
						SNDRV_PCM_RATE_32000 |
						SNDRV_PCM_RATE_48000 |
						SNDRV_PCM_RATE_96000,
			.rate_min	= 8000,
			.rate_max	= 96000,
			.channels_min	= 1,
			.channels_max	= 8,
		},
		.capture = {
			.stream_name	= "Quatenary Capture",
			.formats	= SNDRV_PCM_FMTBIT_S16 |
						SNDRV_PCM_FMTBIT_S24 |
						SNDRV_PCM_FMTBIT_S32,
			.rates		= SNDRV_PCM_RATE_8000 |
						SNDRV_PCM_RATE_16000 |
						SNDRV_PCM_RATE_32000 |
						SNDRV_PCM_RATE_48000 |
						SNDRV_PCM_RATE_96000,
			.rate_min	= 8000,
			.rate_max	= 96000,
			.channels_min	= 1,
			.channels_max	= 8,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops    = &asoc_qcom_lpass_cpu_dai_ops,
	},
};

static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
					   int direction, unsigned int dai_id)
{
	struct lpass_variant *v = drvdata->variant;
	int chan = 0;

	if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
		chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
					v->rdma_channels);

		if (chan >= v->rdma_channels)
			return -EBUSY;
	} else {
		chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
					v->wrdma_channel_start +
					v->wrdma_channels,
					v->wrdma_channel_start);

		if (chan >=  v->wrdma_channel_start + v->wrdma_channels)
			return -EBUSY;
	}

	set_bit(chan, &drvdata->dma_ch_bit_map);

	return chan;
}

static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
{
	clear_bit(chan, &drvdata->dma_ch_bit_map);

	return 0;
}

static int apq8016_lpass_init(struct platform_device *pdev)
{
	struct lpass_data *drvdata = platform_get_drvdata(pdev);
	struct lpass_variant *variant = drvdata->variant;
	struct device *dev = &pdev->dev;
	int ret, i;


	drvdata->clks = devm_kcalloc(dev, variant->num_clks,
				     sizeof(*drvdata->clks), GFP_KERNEL);
	if (!drvdata->clks)
		return -ENOMEM;
	drvdata->num_clks = variant->num_clks;

	for (i = 0; i < drvdata->num_clks; i++)
		drvdata->clks[i].id = variant->clk_name[i];

	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
	if (ret) {
		dev_err(dev, "Failed to get clocks %d\n", ret);
		return ret;
	}

	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
	if (ret) {
		dev_err(dev, "apq8016 clk_enable failed\n");
		return ret;
	}

	drvdata->ahbix_clk = devm_clk_get(dev, "ahbix-clk");
	if (IS_ERR(drvdata->ahbix_clk)) {
		dev_err(dev, "error getting ahbix-clk: %ld\n",
				PTR_ERR(drvdata->ahbix_clk));
		ret = PTR_ERR(drvdata->ahbix_clk);
		goto err_ahbix_clk;
	}

	ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY);
	if (ret) {
		dev_err(dev, "error setting rate on ahbix_clk: %d\n", ret);
		goto err_ahbix_clk;
	}
	dev_dbg(dev, "set ahbix_clk rate to %lu\n",
			clk_get_rate(drvdata->ahbix_clk));

	ret = clk_prepare_enable(drvdata->ahbix_clk);
	if (ret) {
		dev_err(dev, "error enabling ahbix_clk: %d\n", ret);
		goto err_ahbix_clk;
	}

	return 0;

err_ahbix_clk:
	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
	return ret;
}

static int apq8016_lpass_exit(struct platform_device *pdev)
{
	struct lpass_data *drvdata = platform_get_drvdata(pdev);

	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
	clk_disable_unprepare(drvdata->ahbix_clk);

	return 0;
}


static struct lpass_variant apq8016_data = {
	.i2sctrl_reg_base	= 0x1000,
	.i2sctrl_reg_stride	= 0x1000,
	.i2s_ports		= 4,
	.irq_reg_base		= 0x6000,
	.irq_reg_stride		= 0x1000,
	.irq_ports		= 3,
	.rdma_reg_base		= 0x8400,
	.rdma_reg_stride	= 0x1000,
	.rdma_channels		= 2,
	.dmactl_audif_start	= 1,
	.wrdma_reg_base		= 0xB000,
	.wrdma_reg_stride	= 0x1000,
	.wrdma_channel_start	= 5,
	.wrdma_channels		= 2,
	.loopback		= REG_FIELD_ID(0x1000, 15, 15, 4, 0x1000),
	.spken			= REG_FIELD_ID(0x1000, 14, 14, 4, 0x1000),
	.spkmode		= REG_FIELD_ID(0x1000, 10, 13, 4, 0x1000),
	.spkmono		= REG_FIELD_ID(0x1000, 9, 9, 4, 0x1000),
	.micen			= REG_FIELD_ID(0x1000, 8, 8, 4, 0x1000),
	.micmode		= REG_FIELD_ID(0x1000, 4, 7, 4, 0x1000),
	.micmono		= REG_FIELD_ID(0x1000, 3, 3, 4, 0x1000),
	.wssrc			= REG_FIELD_ID(0x1000, 2, 2, 4, 0x1000),
	.bitwidth		= REG_FIELD_ID(0x1000, 0, 0, 4, 0x1000),

	.rdma_dyncclk		= REG_FIELD_ID(0x8400, 12, 12, 2, 0x1000),
	.rdma_bursten		= REG_FIELD_ID(0x8400, 11, 11, 2, 0x1000),
	.rdma_wpscnt		= REG_FIELD_ID(0x8400, 8, 10, 2, 0x1000),
	.rdma_intf		= REG_FIELD_ID(0x8400, 4, 7, 2, 0x1000),
	.rdma_fifowm		= REG_FIELD_ID(0x8400, 1, 3, 2, 0x1000),
	.rdma_enable		= REG_FIELD_ID(0x8400, 0, 0, 2, 0x1000),

	.wrdma_dyncclk		= REG_FIELD_ID(0xB000, 12, 12, 2, 0x1000),
	.wrdma_bursten		= REG_FIELD_ID(0xB000, 11, 11, 2, 0x1000),
	.wrdma_wpscnt		= REG_FIELD_ID(0xB000, 8, 10, 2, 0x1000),
	.wrdma_intf		= REG_FIELD_ID(0xB000, 4, 7, 2, 0x1000),
	.wrdma_fifowm		= REG_FIELD_ID(0xB000, 1, 3, 2, 0x1000),
	.wrdma_enable		= REG_FIELD_ID(0xB000, 0, 0, 2, 0x1000),

	.clk_name		= (const char*[]) {
				   "pcnoc-mport-clk",
				   "pcnoc-sway-clk",
				  },
	.num_clks		= 2,
	.dai_driver		= apq8016_lpass_cpu_dai_driver,
	.num_dai		= ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),
	.dai_osr_clk_names	= (const char *[]) {
				"mi2s-osr-clk0",
				"mi2s-osr-clk1",
				"mi2s-osr-clk2",
				"mi2s-osr-clk3",
				},
	.dai_bit_clk_names	= (const char *[]) {
				"mi2s-bit-clk0",
				"mi2s-bit-clk1",
				"mi2s-bit-clk2",
				"mi2s-bit-clk3",
				},
	.init			= apq8016_lpass_init,
	.exit			= apq8016_lpass_exit,
	.alloc_dma_channel	= apq8016_lpass_alloc_dma_channel,
	.free_dma_channel	= apq8016_lpass_free_dma_channel,
};

static const struct of_device_id apq8016_lpass_cpu_device_id[] = {
	{ .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data },
	{}
};
MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id);

static struct platform_driver apq8016_lpass_cpu_platform_driver = {
	.driver	= {
		.name		= "apq8016-lpass-cpu",
		.of_match_table	= of_match_ptr(apq8016_lpass_cpu_device_id),
	},
	.probe	= asoc_qcom_lpass_cpu_platform_probe,
	.remove	= asoc_qcom_lpass_cpu_platform_remove,
};
module_platform_driver(apq8016_lpass_cpu_platform_driver);

MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver");
MODULE_LICENSE("GPL v2");

Privacy Policy