projects / openwrt / openwrt.git / blob
? search:


7a12e7e4d9370317333a0a6f1d1255d6b94ecabd
[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.19 / 950-0084-Driver-and-overlay-for-Allo-Katana-DAC.patch
1 From e37c55733587a312181a12a8f15b8f35497c828e Mon Sep 17 00:00:00 2001
2 From: allocom <sparky-dev@allo.com>
3 Date: Thu, 19 Apr 2018 12:12:26 +0530
4 Subject: [PATCH 084/806] Driver and overlay for Allo Katana DAC
5
6 Allo Katana DAC: Updated default values
7
8 Signed-off-by: Jaikumar <jaikumar@cem-solutions.com>
9 ---
10 sound/soc/bcm/allo-katana-codec.c | 360 ++++++++++++++++++++++++++++++
11 1 file changed, 360 insertions(+)
12 create mode 100644 sound/soc/bcm/allo-katana-codec.c
13
14 --- /dev/null
15 +++ b/sound/soc/bcm/allo-katana-codec.c
16 @@ -0,0 +1,360 @@
17 +/*
18 + * Driver for the ALLO KATANA CODEC
19 + *
20 + * Author: Jaikumar <jaikumar@cem-solutions.net>
21 + * Copyright 2018
22 + *
23 + * This program is free software; you can redistribute it and/or
24 + * modify it under the terms of the GNU General Public License
25 + * version 2 as published by the Free Software Foundation.
26 + *
27 + * This program is distributed in the hope that it will be useful, but
28 + * WITHOUT ANY WARRANTY; without even the implied warranty of
29 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 + * General Public License for more details.
31 + */
32 +
33 +
34 +#include <linux/init.h>
35 +#include <linux/module.h>
36 +#include <linux/clk.h>
37 +#include <linux/kernel.h>
38 +#include <linux/regmap.h>
39 +#include <linux/regulator/consumer.h>
40 +#include <linux/gcd.h>
41 +#include <sound/soc.h>
42 +#include <sound/soc-dapm.h>
43 +#include <sound/pcm_params.h>
44 +#include <sound/tlv.h>
45 +#include <linux/i2c.h>
46 +
47 +
48 +#define KATANA_CODEC_CHIP_ID 0x30
49 +#define KATANA_CODEC_VIRT_BASE 0x100
50 +#define KATANA_CODEC_PAGE 0
51 +
52 +#define KATANA_CODEC_CHIP_ID_REG (KATANA_CODEC_VIRT_BASE + 0)
53 +#define KATANA_CODEC_RESET (KATANA_CODEC_VIRT_BASE + 1)
54 +#define KATANA_CODEC_VOLUME_1 (KATANA_CODEC_VIRT_BASE + 2)
55 +#define KATANA_CODEC_VOLUME_2 (KATANA_CODEC_VIRT_BASE + 3)
56 +#define KATANA_CODEC_MUTE (KATANA_CODEC_VIRT_BASE + 4)
57 +#define KATANA_CODEC_DSP_PROGRAM (KATANA_CODEC_VIRT_BASE + 5)
58 +#define KATANA_CODEC_DEEMPHASIS (KATANA_CODEC_VIRT_BASE + 6)
59 +#define KATANA_CODEC_DOP (KATANA_CODEC_VIRT_BASE + 7)
60 +#define KATANA_CODEC_FORMAT (KATANA_CODEC_VIRT_BASE + 8)
61 +#define KATANA_CODEC_COMMAND (KATANA_CODEC_VIRT_BASE + 9)
62 +#define KATANA_CODEC_MAX_REGISTER (KATANA_CODEC_VIRT_BASE + 9)
63 +
64 +#define KATANA_CODEC_FMT 0xff
65 +#define KATANA_CODEC_CHAN_MONO 0x00
66 +#define KATANA_CODEC_CHAN_STEREO 0x80
67 +#define KATANA_CODEC_ALEN_16 0x10
68 +#define KATANA_CODEC_ALEN_24 0x20
69 +#define KATANA_CODEC_ALEN_32 0x30
70 +#define KATANA_CODEC_RATE_11025 0x01
71 +#define KATANA_CODEC_RATE_22050 0x02
72 +#define KATANA_CODEC_RATE_32000 0x03
73 +#define KATANA_CODEC_RATE_44100 0x04
74 +#define KATANA_CODEC_RATE_48000 0x05
75 +#define KATANA_CODEC_RATE_88200 0x06
76 +#define KATANA_CODEC_RATE_96000 0x07
77 +#define KATANA_CODEC_RATE_176400 0x08
78 +#define KATANA_CODEC_RATE_192000 0x09
79 +#define KATANA_CODEC_RATE_352800 0x0a
80 +#define KATANA_CODEC_RATE_384000 0x0b
81 +
82 +
83 +struct katana_codec_priv {
84 + struct regmap *regmap;
85 + int fmt;
86 +};
87 +
88 +static const struct reg_default katana_codec_reg_defaults[] = {
89 + { KATANA_CODEC_RESET, 0x00 },
90 + { KATANA_CODEC_VOLUME_1, 0xF0 },
91 + { KATANA_CODEC_VOLUME_2, 0xF0 },
92 + { KATANA_CODEC_MUTE, 0x00 },
93 + { KATANA_CODEC_DSP_PROGRAM, 0x04 },
94 + { KATANA_CODEC_DEEMPHASIS, 0x00 },
95 + { KATANA_CODEC_DOP, 0x00 },
96 + { KATANA_CODEC_FORMAT, 0xb4 },
97 +};
98 +
99 +static const char * const katana_codec_dsp_program_texts[] = {
100 + "Linear Phase Fast Roll-off Filter",
101 + "Linear Phase Slow Roll-off Filter",
102 + "Minimum Phase Fast Roll-off Filter",
103 + "Minimum Phase Slow Roll-off Filter",
104 + "Apodizing Fast Roll-off Filter",
105 + "Corrected Minimum Phase Fast Roll-off Filter",
106 + "Brick Wall Filter",
107 +};
108 +
109 +static const unsigned int katana_codec_dsp_program_values[] = {
110 + 0,
111 + 1,
112 + 2,
113 + 3,
114 + 4,
115 + 6,
116 + 7,
117 +};
118 +
119 +static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_dsp_program,
120 + KATANA_CODEC_DSP_PROGRAM, 0, 0x07,
121 + katana_codec_dsp_program_texts,
122 + katana_codec_dsp_program_values);
123 +
124 +static const char * const katana_codec_deemphasis_texts[] = {
125 + "Bypass",
126 + "32kHz",
127 + "44.1kHz",
128 + "48kHz",
129 +};
130 +
131 +static const unsigned int katana_codec_deemphasis_values[] = {
132 + 0,
133 + 1,
134 + 2,
135 + 3,
136 +};
137 +
138 +static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_deemphasis,
139 + KATANA_CODEC_DEEMPHASIS, 0, 0x03,
140 + katana_codec_deemphasis_texts,
141 + katana_codec_deemphasis_values);
142 +
143 +static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12700, 0);
144 +
145 +static const struct snd_kcontrol_new katana_codec_controls[] = {
146 + SOC_DOUBLE_R_TLV("Master Playback Volume", KATANA_CODEC_VOLUME_1,
147 + KATANA_CODEC_VOLUME_2, 0, 255, 1, master_tlv),
148 + SOC_DOUBLE("Master Playback Switch", KATANA_CODEC_MUTE, 0, 0, 1, 1),
149 + SOC_ENUM("DSP Program Route", katana_codec_dsp_program),
150 + SOC_ENUM("Deemphasis Route", katana_codec_deemphasis),
151 + SOC_SINGLE("DoP Playback Switch", KATANA_CODEC_DOP, 0, 1, 1)
152 +};
153 +
154 +static bool katana_codec_readable_register(struct device *dev, unsigned int reg)
155 +{
156 + switch (reg) {
157 + case KATANA_CODEC_CHIP_ID_REG:
158 + return true;
159 + default:
160 + return reg < 0xff;
161 + }
162 +}
163 +
164 +static int katana_codec_hw_params(struct snd_pcm_substream *substream,
165 + struct snd_pcm_hw_params *params,
166 + struct snd_soc_dai *dai)
167 +{
168 + struct snd_soc_component *component = dai->component;
169 + struct katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component);
170 + int fmt = 0;
171 + int ret;
172 +
173 + dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n",
174 + params_rate(params),
175 + params_channels(params));
176 +
177 + switch (katana_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
178 + case SND_SOC_DAIFMT_CBM_CFM: // master
179 + if (params_channels(params) == 2)
180 + fmt = KATANA_CODEC_CHAN_STEREO;
181 + else
182 + fmt = KATANA_CODEC_CHAN_MONO;
183 +
184 + switch (params_width(params)) {
185 + case 16:
186 + fmt |= KATANA_CODEC_ALEN_16;
187 + break;
188 + case 24:
189 + fmt |= KATANA_CODEC_ALEN_24;
190 + break;
191 + case 32:
192 + fmt |= KATANA_CODEC_ALEN_32;
193 + break;
194 + default:
195 + dev_err(component->card->dev, "Bad frame size: %d\n",
196 + params_width(params));
197 + return -EINVAL;
198 + }
199 +
200 + switch (params_rate(params)) {
201 + case 44100:
202 + fmt |= KATANA_CODEC_RATE_44100;
203 + break;
204 + case 48000:
205 + fmt |= KATANA_CODEC_RATE_48000;
206 + break;
207 + case 88200:
208 + fmt |= KATANA_CODEC_RATE_88200;
209 + break;
210 + case 96000:
211 + fmt |= KATANA_CODEC_RATE_96000;
212 + break;
213 + case 176400:
214 + fmt |= KATANA_CODEC_RATE_176400;
215 + break;
216 + case 192000:
217 + fmt |= KATANA_CODEC_RATE_192000;
218 + break;
219 + case 352800:
220 + fmt |= KATANA_CODEC_RATE_352800;
221 + break;
222 + case 384000:
223 + fmt |= KATANA_CODEC_RATE_384000;
224 + break;
225 + default:
226 + dev_err(component->card->dev, "Bad sample rate: %d\n",
227 + params_rate(params));
228 + return -EINVAL;
229 + }
230 +
231 + ret = regmap_write(katana_codec->regmap, KATANA_CODEC_FORMAT, fmt);
232 + if (ret != 0) {
233 + dev_err(component->card->dev, "Failed to set format: %d\n", ret);
234 + return ret;
235 + }
236 + break;
237 +
238 + default:
239 + return -EINVAL;
240 + }
241 +
242 + return 0;
243 +}
244 +
245 +static int katana_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
246 +{
247 + struct snd_soc_component *component = dai->component;
248 + struct katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component);
249 +
250 + katana_codec->fmt = fmt;
251 +
252 + return 0;
253 +}
254 +
255 +static const struct snd_soc_dai_ops katana_codec_dai_ops = {
256 + .hw_params = katana_codec_hw_params,
257 + .set_fmt = katana_codec_set_fmt,
258 +};
259 +
260 +static struct snd_soc_dai_driver katana_codec_dai = {
261 + .name = "allo-katana-codec",
262 + .playback = {
263 + .stream_name = "Playback",
264 + .channels_min = 2,
265 + .channels_max = 2,
266 + .rates = SNDRV_PCM_RATE_CONTINUOUS,
267 + .rate_min = 44100,
268 + .rate_max = 384000,
269 + .formats = SNDRV_PCM_FMTBIT_S16_LE |
270 + SNDRV_PCM_FMTBIT_S32_LE
271 + },
272 + .ops = &katana_codec_dai_ops,
273 +};
274 +
275 +static struct snd_soc_component_driver katana_codec_component_driver = {
276 + .idle_bias_on = true,
277 +
278 + .controls = katana_codec_controls,
279 + .num_controls = ARRAY_SIZE(katana_codec_controls),
280 +};
281 +
282 +static const struct regmap_range_cfg katana_codec_range = {
283 + .name = "Pages", .range_min = KATANA_CODEC_VIRT_BASE,
284 + .range_max = KATANA_CODEC_MAX_REGISTER,
285 + .selector_reg = KATANA_CODEC_PAGE,
286 + .selector_mask = 0xff,
287 + .window_start = 0, .window_len = 0x100,
288 +};
289 +
290 +const struct regmap_config katana_codec_regmap = {
291 + .reg_bits = 8,
292 + .val_bits = 8,
293 +
294 + .ranges = &katana_codec_range,
295 + .num_ranges = 1,
296 +
297 + .max_register = KATANA_CODEC_MAX_REGISTER,
298 + .readable_reg = katana_codec_readable_register,
299 + .reg_defaults = katana_codec_reg_defaults,
300 + .num_reg_defaults = ARRAY_SIZE(katana_codec_reg_defaults),
301 + .cache_type = REGCACHE_RBTREE,
302 +};
303 +
304 +static int allo_katana_component_probe(struct i2c_client *i2c,
305 + const struct i2c_device_id *id)
306 +{
307 + struct regmap *regmap;
308 + struct regmap_config config = katana_codec_regmap;
309 + struct device *dev = &i2c->dev;
310 + struct katana_codec_priv *katana_codec;
311 + unsigned int chip_id = 0;
312 + int ret;
313 +
314 + regmap = devm_regmap_init_i2c(i2c, &config);
315 + if (IS_ERR(regmap))
316 + return PTR_ERR(regmap);
317 +
318 + katana_codec = devm_kzalloc(dev, sizeof(struct katana_codec_priv),
319 + GFP_KERNEL);
320 + if (!katana_codec)
321 + return -ENOMEM;
322 +
323 + dev_set_drvdata(dev, katana_codec);
324 + katana_codec->regmap = regmap;
325 +
326 + ret = regmap_read(regmap, KATANA_CODEC_CHIP_ID_REG, &chip_id);
327 + if ((ret != 0) || (chip_id != KATANA_CODEC_CHIP_ID)) {
328 + dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret);
329 + return ret;
330 + }
331 + regmap_update_bits(regmap, KATANA_CODEC_RESET, 0x01, 0x01);
332 + msleep(10);
333 +
334 + ret = snd_soc_register_component(dev, &katana_codec_component_driver,
335 + &katana_codec_dai, 1);
336 + if (ret != 0) {
337 + dev_err(dev, "failed to register codec: %d\n", ret);
338 + return ret;
339 + }
340 +
341 + return 0;
342 +}
343 +
344 +static int allo_katana_component_remove(struct i2c_client *i2c)
345 +{
346 + snd_soc_unregister_component(&i2c->dev);
347 + return 0;
348 +}
349 +
350 +static const struct i2c_device_id allo_katana_component_id[] = {
351 + { "allo-katana-codec", },
352 + { }
353 +};
354 +MODULE_DEVICE_TABLE(i2c, allo_katana_component_id);
355 +
356 +static const struct of_device_id allo_katana_codec_of_match[] = {
357 + { .compatible = "allo,allo-katana-codec", },
358 + { }
359 +};
360 +MODULE_DEVICE_TABLE(of, allo_katana_codec_of_match);
361 +
362 +static struct i2c_driver allo_katana_component_driver = {
363 + .probe = allo_katana_component_probe,
364 + .remove = allo_katana_component_remove,
365 + .id_table = allo_katana_component_id,
366 + .driver = {
367 + .name = "allo-katana-codec",
368 + .of_match_table = allo_katana_codec_of_match,
369 + },
370 +};
371 +
372 +module_i2c_driver(allo_katana_component_driver);
373 +
374 +MODULE_DESCRIPTION("ASoC Allo Katana Codec Driver");
375 +MODULE_AUTHOR("Jaikumar <jaikumar@cem-solutions.net>");
376 +MODULE_LICENSE("GPL v2");
OpenWrt Source Repository