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5
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_pcm_hw_params 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
229 memcpy(&data->params, params, sizeof(*params));
230
231 return 0;
232}
233
234static int g12a_tohdmitx_output_hw_params(struct snd_pcm_substream *substream,
235 struct snd_pcm_hw_params *params,
236 struct snd_soc_dai *dai)
237{
238 struct g12a_tohdmitx_input *in_data =
239 g12a_tohdmitx_get_input_data(dai->capture_widget);
240
241 if (!in_data)
242 return -ENODEV;
243
244 memcpy(params, &in_data->params, sizeof(*params));
245
246 return 0;
247}
248
249static int g12a_tohdmitx_input_set_fmt(struct snd_soc_dai *dai,
250 unsigned int fmt)
251{
252 struct g12a_tohdmitx_input *data = dai->playback_dma_data;
253
254
255 data->fmt = fmt;
256 return 0;
257}
258
259static int g12a_tohdmitx_output_startup(struct snd_pcm_substream *substream,
260 struct snd_soc_dai *dai)
261{
262 struct snd_soc_pcm_runtime *rtd = substream->private_data;
263 struct g12a_tohdmitx_input *in_data =
264 g12a_tohdmitx_get_input_data(dai->capture_widget);
265
266 if (!in_data)
267 return -ENODEV;
268
269 if (!in_data->fmt)
270 return 0;
271
272 return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt);
273}
274
275static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
276 .hw_params = g12a_tohdmitx_input_hw_params,
277 .set_fmt = g12a_tohdmitx_input_set_fmt,
278};
279
280static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
281 .hw_params = g12a_tohdmitx_output_hw_params,
282 .startup = g12a_tohdmitx_output_startup,
283};
284
285#define TOHDMITX_SPDIF_FORMATS \
286 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
287 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
288
289#define TOHDMITX_I2S_FORMATS \
290 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
291 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
292 SNDRV_PCM_FMTBIT_S32_LE)
293
294#define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \
295{ \
296 .stream_name = xname " " xsuffix, \
297 .channels_min = 1, \
298 .channels_max = (xchmax), \
299 .rate_min = 8000, \
300 .rate_max = 192000, \
301 .formats = (xfmt), \
302}
303
304#define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \
305 .name = xname, \
306 .id = (xid), \
307 .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \
308 .ops = &g12a_tohdmitx_input_ops, \
309 .probe = g12a_tohdmitx_input_probe, \
310 .remove = g12a_tohdmitx_input_remove, \
311}
312
313#define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \
314 .name = xname, \
315 .id = (xid), \
316 .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \
317 .ops = &g12a_tohdmitx_output_ops, \
318}
319
320static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
321 TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
322 TOHDMITX_I2S_FORMATS, 8),
323 TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
324 TOHDMITX_I2S_FORMATS, 8),
325 TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
326 TOHDMITX_I2S_FORMATS, 8),
327 TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
328 TOHDMITX_I2S_FORMATS, 8),
329 TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
330 TOHDMITX_SPDIF_FORMATS, 2),
331 TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
332 TOHDMITX_SPDIF_FORMATS, 2),
333 TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
334 TOHDMITX_SPDIF_FORMATS, 2),
335};
336
337static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
338{
339
340 return snd_soc_component_write(c, TOHDMITX_CTRL0,
341 CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
342}
343
344static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
345 { "I2S SRC", "I2S A", "I2S IN A Playback" },
346 { "I2S SRC", "I2S B", "I2S IN B Playback" },
347 { "I2S SRC", "I2S C", "I2S IN C Playback" },
348 { "I2S OUT EN", "Switch", "I2S SRC" },
349 { "I2S OUT Capture", NULL, "I2S OUT EN" },
350 { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
351 { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
352 { "SPDIF OUT EN", "Switch", "SPDIF SRC" },
353 { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
354};
355
356static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
357 .probe = g12a_tohdmi_component_probe,
358 .dapm_widgets = g12a_tohdmitx_widgets,
359 .num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
360 .dapm_routes = g12a_tohdmitx_routes,
361 .num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
362 .endianness = 1,
363 .non_legacy_dai_naming = 1,
364};
365
366static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
367 .reg_bits = 32,
368 .val_bits = 32,
369 .reg_stride = 4,
370};
371
372static const struct of_device_id g12a_tohdmitx_of_match[] = {
373 { .compatible = "amlogic,g12a-tohdmitx", },
374 {}
375};
376MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
377
378static int g12a_tohdmitx_probe(struct platform_device *pdev)
379{
380 struct device *dev = &pdev->dev;
381 struct resource *res;
382 void __iomem *regs;
383 struct regmap *map;
384
385 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
386 regs = devm_ioremap_resource(dev, res);
387 if (IS_ERR(regs))
388 return PTR_ERR(regs);
389
390 map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
391 if (IS_ERR(map)) {
392 dev_err(dev, "failed to init regmap: %ld\n",
393 PTR_ERR(map));
394 return PTR_ERR(map);
395 }
396
397 return devm_snd_soc_register_component(dev,
398 &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
399 ARRAY_SIZE(g12a_tohdmitx_dai_drv));
400}
401
402static struct platform_driver g12a_tohdmitx_pdrv = {
403 .driver = {
404 .name = G12A_TOHDMITX_DRV_NAME,
405 .of_match_table = g12a_tohdmitx_of_match,
406 },
407 .probe = g12a_tohdmitx_probe,
408};
409module_platform_driver(g12a_tohdmitx_pdrv);
410
411MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
412MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
413MODULE_LICENSE("GPL v2");
414
