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6#include <linux/bitfield.h>
7#include <linux/clk.h>
8#include <linux/module.h>
9#include <sound/pcm_params.h>
10#include <linux/regmap.h>
11#include <sound/soc.h>
12#include <sound/soc-dai.h>
13
14#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
15
16#define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"
17
18#define TOHDMITX_CTRL0 0x0
19#define CTRL0_ENABLE_SHIFT 31
20#define CTRL0_I2S_DAT_SEL GENMASK(13, 12)
21#define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8)
22#define CTRL0_I2S_BLK_CAP_INV BIT(7)
23#define CTRL0_I2S_BCLK_O_INV BIT(6)
24#define CTRL0_I2S_BCLK_SEL GENMASK(5, 4)
25#define CTRL0_SPDIF_CLK_CAP_INV BIT(3)
26#define CTRL0_SPDIF_CLK_O_INV BIT(2)
27#define CTRL0_SPDIF_SEL BIT(1)
28#define CTRL0_SPDIF_CLK_SEL BIT(0)
29
30struct g12a_tohdmitx_input {
31 struct snd_soc_pcm_stream params;
32 unsigned int fmt;
33};
34
35static struct snd_soc_dapm_widget *
36g12a_tohdmitx_get_input(struct snd_soc_dapm_widget *w)
37{
38 struct snd_soc_dapm_path *p = NULL;
39 struct snd_soc_dapm_widget *in;
40
41 snd_soc_dapm_widget_for_each_source_path(w, p) {
42 if (!p->connect)
43 continue;
44
45
46 if (snd_soc_dapm_to_component(w->dapm) !=
47 snd_soc_dapm_to_component(p->source->dapm))
48 continue;
49
50 if (p->source->id == snd_soc_dapm_dai_in)
51 return p->source;
52
53 in = g12a_tohdmitx_get_input(p->source);
54 if (in)
55 return in;
56 }
57
58 return NULL;
59}
60
61static struct g12a_tohdmitx_input *
62g12a_tohdmitx_get_input_data(struct snd_soc_dapm_widget *w)
63{
64 struct snd_soc_dapm_widget *in =
65 g12a_tohdmitx_get_input(w);
66 struct snd_soc_dai *dai;
67
68 if (WARN_ON(!in))
69 return NULL;
70
71 dai = in->priv;
72
73 return dai->playback_dma_data;
74}
75
76static const char * const g12a_tohdmitx_i2s_mux_texts[] = {
77 "I2S A", "I2S B", "I2S C",
78};
79
80static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_i2s_mux_enum,
81 g12a_tohdmitx_i2s_mux_texts);
82
83static int g12a_tohdmitx_get_input_val(struct snd_soc_component *component,
84 unsigned int mask)
85{
86 unsigned int val;
87
88 snd_soc_component_read(component, TOHDMITX_CTRL0, &val);
89 return (val & mask) >> __ffs(mask);
90}
91
92static int g12a_tohdmitx_i2s_mux_get_enum(struct snd_kcontrol *kcontrol,
93 struct snd_ctl_elem_value *ucontrol)
94{
95 struct snd_soc_component *component =
96 snd_soc_dapm_kcontrol_component(kcontrol);
97
98 ucontrol->value.enumerated.item[0] =
99 g12a_tohdmitx_get_input_val(component, CTRL0_I2S_DAT_SEL);
100
101 return 0;
102}
103
104static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol,
105 struct snd_ctl_elem_value *ucontrol)
106{
107 struct snd_soc_component *component =
108 snd_soc_dapm_kcontrol_component(kcontrol);
109 struct snd_soc_dapm_context *dapm =
110 snd_soc_dapm_kcontrol_dapm(kcontrol);
111 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
112 unsigned int mux = ucontrol->value.enumerated.item[0];
113 unsigned int val = g12a_tohdmitx_get_input_val(component,
114 CTRL0_I2S_DAT_SEL);
115
116
117 if (val != mux)
118 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
119
120 snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
121 CTRL0_I2S_DAT_SEL |
122 CTRL0_I2S_LRCLK_SEL |
123 CTRL0_I2S_BCLK_SEL,
124 FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
125 FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
126 FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
127
128 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
129
130 return 0;
131}
132
133static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
134 SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
135 g12a_tohdmitx_i2s_mux_get_enum,
136 g12a_tohdmitx_i2s_mux_put_enum);
137
138static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
139 "SPDIF A", "SPDIF B",
140};
141
142static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_spdif_mux_enum,
143 g12a_tohdmitx_spdif_mux_texts);
144
145static int g12a_tohdmitx_spdif_mux_get_enum(struct snd_kcontrol *kcontrol,
146 struct snd_ctl_elem_value *ucontrol)
147{
148 struct snd_soc_component *component =
149 snd_soc_dapm_kcontrol_component(kcontrol);
150
151 ucontrol->value.enumerated.item[0] =
152 g12a_tohdmitx_get_input_val(component, CTRL0_SPDIF_SEL);
153
154 return 0;
155}
156
157static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,
158 struct snd_ctl_elem_value *ucontrol)
159{
160 struct snd_soc_component *component =
161 snd_soc_dapm_kcontrol_component(kcontrol);
162 struct snd_soc_dapm_context *dapm =
163 snd_soc_dapm_kcontrol_dapm(kcontrol);
164 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
165 unsigned int mux = ucontrol->value.enumerated.item[0];
166 unsigned int val = g12a_tohdmitx_get_input_val(component,
167 CTRL0_SPDIF_SEL);
168
169
170 if (val != mux)
171 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
172
173 snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
174 CTRL0_SPDIF_SEL |
175 CTRL0_SPDIF_CLK_SEL,
176 FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
177 FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
178
179 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
180
181 return 0;
182}
183
184static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
185 SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
186 g12a_tohdmitx_spdif_mux_get_enum,
187 g12a_tohdmitx_spdif_mux_put_enum);
188
189static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
190 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
191 CTRL0_ENABLE_SHIFT, 1, 0);
192
193static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
194 SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
195 &g12a_tohdmitx_i2s_mux),
196 SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
197 &g12a_tohdmitx_out_enable),
198 SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
199 &g12a_tohdmitx_spdif_mux),
200 SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
201 &g12a_tohdmitx_out_enable),
202};
203
204static int g12a_tohdmitx_input_probe(struct snd_soc_dai *dai)
205{
206 struct g12a_tohdmitx_input *data;
207
208 data = kzalloc(sizeof(*data), GFP_KERNEL);
209 if (!data)
210 return -ENOMEM;
211
212 dai->playback_dma_data = data;
213 return 0;
214}
215
216static int g12a_tohdmitx_input_remove(struct snd_soc_dai *dai)
217{
218 kfree(dai->playback_dma_data);
219 return 0;
220}
221
222static int g12a_tohdmitx_input_hw_params(struct snd_pcm_substream *substream,
223 struct snd_pcm_hw_params *params,
224 struct snd_soc_dai *dai)
225{
226 struct g12a_tohdmitx_input *data = dai->playback_dma_data;
227
228 data->params.rates = snd_pcm_rate_to_rate_bit(params_rate(params));
229 data->params.rate_min = params_rate(params);
230 data->params.rate_max = params_rate(params);
231 data->params.formats = 1 << params_format(params);
232 data->params.channels_min = params_channels(params);
233 data->params.channels_max = params_channels(params);
234 data->params.sig_bits = dai->driver->playback.sig_bits;
235
236 return 0;
237}
238
239
240static int g12a_tohdmitx_input_set_fmt(struct snd_soc_dai *dai,
241 unsigned int fmt)
242{
243 struct g12a_tohdmitx_input *data = dai->playback_dma_data;
244
245
246 data->fmt = fmt;
247 return 0;
248}
249
250static int g12a_tohdmitx_output_startup(struct snd_pcm_substream *substream,
251 struct snd_soc_dai *dai)
252{
253 struct snd_soc_pcm_runtime *rtd = substream->private_data;
254 struct g12a_tohdmitx_input *in_data =
255 g12a_tohdmitx_get_input_data(dai->capture_widget);
256
257 if (!in_data)
258 return -ENODEV;
259
260 if (WARN_ON(!rtd->dai_link->params)) {
261 dev_warn(dai->dev, "codec2codec link expected\n");
262 return -EINVAL;
263 }
264
265
266 rtd->dai_link->params = &in_data->params;
267
268 if (!in_data->fmt)
269 return 0;
270
271 return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt);
272}
273
274static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
275 .hw_params = g12a_tohdmitx_input_hw_params,
276 .set_fmt = g12a_tohdmitx_input_set_fmt,
277};
278
279static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
280 .startup = g12a_tohdmitx_output_startup,
281};
282
283#define TOHDMITX_SPDIF_FORMATS \
284 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
285 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
286
287#define TOHDMITX_I2S_FORMATS \
288 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
289 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
290 SNDRV_PCM_FMTBIT_S32_LE)
291
292#define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \
293{ \
294 .stream_name = xname " " xsuffix, \
295 .channels_min = 1, \
296 .channels_max = (xchmax), \
297 .rate_min = 8000, \
298 .rate_max = 192000, \
299 .formats = (xfmt), \
300}
301
302#define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \
303 .name = xname, \
304 .id = (xid), \
305 .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \
306 .ops = &g12a_tohdmitx_input_ops, \
307 .probe = g12a_tohdmitx_input_probe, \
308 .remove = g12a_tohdmitx_input_remove, \
309}
310
311#define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \
312 .name = xname, \
313 .id = (xid), \
314 .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \
315 .ops = &g12a_tohdmitx_output_ops, \
316}
317
318static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
319 TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
320 TOHDMITX_I2S_FORMATS, 8),
321 TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
322 TOHDMITX_I2S_FORMATS, 8),
323 TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
324 TOHDMITX_I2S_FORMATS, 8),
325 TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
326 TOHDMITX_I2S_FORMATS, 8),
327 TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
328 TOHDMITX_SPDIF_FORMATS, 2),
329 TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
330 TOHDMITX_SPDIF_FORMATS, 2),
331 TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
332 TOHDMITX_SPDIF_FORMATS, 2),
333};
334
335static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
336{
337
338 return snd_soc_component_write(c, TOHDMITX_CTRL0,
339 CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
340}
341
342static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
343 { "I2S SRC", "I2S A", "I2S IN A Playback" },
344 { "I2S SRC", "I2S B", "I2S IN B Playback" },
345 { "I2S SRC", "I2S C", "I2S IN C Playback" },
346 { "I2S OUT EN", "Switch", "I2S SRC" },
347 { "I2S OUT Capture", NULL, "I2S OUT EN" },
348 { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
349 { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
350 { "SPDIF OUT EN", "Switch", "SPDIF SRC" },
351 { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
352};
353
354static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
355 .probe = g12a_tohdmi_component_probe,
356 .dapm_widgets = g12a_tohdmitx_widgets,
357 .num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
358 .dapm_routes = g12a_tohdmitx_routes,
359 .num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
360 .endianness = 1,
361 .non_legacy_dai_naming = 1,
362};
363
364static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
365 .reg_bits = 32,
366 .val_bits = 32,
367 .reg_stride = 4,
368};
369
370static const struct of_device_id g12a_tohdmitx_of_match[] = {
371 { .compatible = "amlogic,g12a-tohdmitx", },
372 {}
373};
374MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
375
376static int g12a_tohdmitx_probe(struct platform_device *pdev)
377{
378 struct device *dev = &pdev->dev;
379 void __iomem *regs;
380 struct regmap *map;
381
382 regs = devm_platform_ioremap_resource(pdev, 0);
383 if (IS_ERR(regs))
384 return PTR_ERR(regs);
385
386 map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
387 if (IS_ERR(map)) {
388 dev_err(dev, "failed to init regmap: %ld\n",
389 PTR_ERR(map));
390 return PTR_ERR(map);
391 }
392
393 return devm_snd_soc_register_component(dev,
394 &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
395 ARRAY_SIZE(g12a_tohdmitx_dai_drv));
396}
397
398static struct platform_driver g12a_tohdmitx_pdrv = {
399 .driver = {
400 .name = G12A_TOHDMITX_DRV_NAME,
401 .of_match_table = g12a_tohdmitx_of_match,
402 },
403 .probe = g12a_tohdmitx_probe,
404};
405module_platform_driver(g12a_tohdmitx_pdrv);
406
407MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
408MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
409MODULE_LICENSE("GPL v2");
410
