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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 <linux/regulator/consumer.h>
12#include <linux/reset.h>
13#include <sound/soc.h>
14#include <sound/soc-dai.h>
15
16#include <dt-bindings/sound/meson-g12a-toacodec.h>
17#include "axg-tdm.h"
18#include "meson-codec-glue.h"
19
20#define G12A_TOACODEC_DRV_NAME "g12a-toacodec"
21
22#define TOACODEC_CTRL0 0x0
23#define CTRL0_ENABLE_SHIFT 31
24#define CTRL0_DAT_SEL_SHIFT 14
25#define CTRL0_DAT_SEL (0x3 << CTRL0_DAT_SEL_SHIFT)
26#define CTRL0_LANE_SEL 12
27#define CTRL0_LRCLK_SEL GENMASK(9, 8)
28#define CTRL0_BLK_CAP_INV BIT(7)
29#define CTRL0_BCLK_O_INV BIT(6)
30#define CTRL0_BCLK_SEL GENMASK(5, 4)
31#define CTRL0_MCLK_SEL GENMASK(2, 0)
32
33#define TOACODEC_OUT_CHMAX 2
34
35static const char * const g12a_toacodec_mux_texts[] = {
36 "I2S A", "I2S B", "I2S C",
37};
38
39static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
40 struct snd_ctl_elem_value *ucontrol)
41{
42 struct snd_soc_component *component =
43 snd_soc_dapm_kcontrol_component(kcontrol);
44 struct snd_soc_dapm_context *dapm =
45 snd_soc_dapm_kcontrol_dapm(kcontrol);
46 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
47 unsigned int mux, changed;
48
49 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
50 changed = snd_soc_component_test_bits(component, e->reg,
51 CTRL0_DAT_SEL,
52 FIELD_PREP(CTRL0_DAT_SEL, mux));
53
54 if (!changed)
55 return 0;
56
57
58 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
59
60 snd_soc_component_update_bits(component, e->reg,
61 CTRL0_DAT_SEL |
62 CTRL0_LRCLK_SEL |
63 CTRL0_BCLK_SEL,
64 FIELD_PREP(CTRL0_DAT_SEL, mux) |
65 FIELD_PREP(CTRL0_LRCLK_SEL, mux) |
66 FIELD_PREP(CTRL0_BCLK_SEL, mux));
67
68
69
70
71
72
73
74
75
76
77
78
79 snd_soc_component_update_bits(component, e->reg,
80 CTRL0_MCLK_SEL,
81 FIELD_PREP(CTRL0_MCLK_SEL, mux));
82
83 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
84
85 return 0;
86}
87
88static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
89 CTRL0_DAT_SEL_SHIFT,
90 g12a_toacodec_mux_texts);
91
92static const struct snd_kcontrol_new g12a_toacodec_mux =
93 SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum,
94 snd_soc_dapm_get_enum_double,
95 g12a_toacodec_mux_put_enum);
96
97static const struct snd_kcontrol_new g12a_toacodec_out_enable =
98 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
99 CTRL0_ENABLE_SHIFT, 1, 0);
100
101static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
102 SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
103 &g12a_toacodec_mux),
104 SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
105 &g12a_toacodec_out_enable),
106};
107
108static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream,
109 struct snd_pcm_hw_params *params,
110 struct snd_soc_dai *dai)
111{
112 struct meson_codec_glue_input *data;
113 int ret;
114
115 ret = meson_codec_glue_input_hw_params(substream, params, dai);
116 if (ret)
117 return ret;
118
119
120 data = meson_codec_glue_input_get_data(dai);
121 data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX,
122 data->params.channels_min);
123 data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX,
124 data->params.channels_max);
125
126 return 0;
127}
128
129static const struct snd_soc_dai_ops g12a_toacodec_input_ops = {
130 .hw_params = g12a_toacodec_input_hw_params,
131 .set_fmt = meson_codec_glue_input_set_fmt,
132};
133
134static const struct snd_soc_dai_ops g12a_toacodec_output_ops = {
135 .startup = meson_codec_glue_output_startup,
136};
137
138#define TOACODEC_STREAM(xname, xsuffix, xchmax) \
139{ \
140 .stream_name = xname " " xsuffix, \
141 .channels_min = 1, \
142 .channels_max = (xchmax), \
143 .rate_min = 5512, \
144 .rate_max = 192000, \
145 .formats = AXG_TDM_FORMATS, \
146}
147
148#define TOACODEC_INPUT(xname, xid) { \
149 .name = xname, \
150 .id = (xid), \
151 .playback = TOACODEC_STREAM(xname, "Playback", 8), \
152 .ops = &g12a_toacodec_input_ops, \
153 .probe = meson_codec_glue_input_dai_probe, \
154 .remove = meson_codec_glue_input_dai_remove, \
155}
156
157#define TOACODEC_OUTPUT(xname, xid) { \
158 .name = xname, \
159 .id = (xid), \
160 .capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \
161 .ops = &g12a_toacodec_output_ops, \
162}
163
164static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = {
165 TOACODEC_INPUT("IN A", TOACODEC_IN_A),
166 TOACODEC_INPUT("IN B", TOACODEC_IN_B),
167 TOACODEC_INPUT("IN C", TOACODEC_IN_C),
168 TOACODEC_OUTPUT("OUT", TOACODEC_OUT),
169};
170
171static int g12a_toacodec_component_probe(struct snd_soc_component *c)
172{
173
174 return snd_soc_component_write(c, TOACODEC_CTRL0,
175 CTRL0_BLK_CAP_INV);
176}
177
178static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
179 { "SRC", "I2S A", "IN A Playback" },
180 { "SRC", "I2S B", "IN B Playback" },
181 { "SRC", "I2S C", "IN C Playback" },
182 { "OUT EN", "Switch", "SRC" },
183 { "OUT Capture", NULL, "OUT EN" },
184};
185
186static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
187 SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
188};
189
190static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
191 .probe = g12a_toacodec_component_probe,
192 .controls = g12a_toacodec_controls,
193 .num_controls = ARRAY_SIZE(g12a_toacodec_controls),
194 .dapm_widgets = g12a_toacodec_widgets,
195 .num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets),
196 .dapm_routes = g12a_toacodec_routes,
197 .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes),
198 .endianness = 1,
199 .non_legacy_dai_naming = 1,
200};
201
202static const struct regmap_config g12a_toacodec_regmap_cfg = {
203 .reg_bits = 32,
204 .val_bits = 32,
205 .reg_stride = 4,
206};
207
208static const struct of_device_id g12a_toacodec_of_match[] = {
209 { .compatible = "amlogic,g12a-toacodec", },
210 {}
211};
212MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
213
214static int g12a_toacodec_probe(struct platform_device *pdev)
215{
216 struct device *dev = &pdev->dev;
217 void __iomem *regs;
218 struct regmap *map;
219 int ret;
220
221 ret = device_reset(dev);
222 if (ret)
223 return ret;
224
225 regs = devm_platform_ioremap_resource(pdev, 0);
226 if (IS_ERR(regs))
227 return PTR_ERR(regs);
228
229 map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg);
230 if (IS_ERR(map)) {
231 dev_err(dev, "failed to init regmap: %ld\n",
232 PTR_ERR(map));
233 return PTR_ERR(map);
234 }
235
236 return devm_snd_soc_register_component(dev,
237 &g12a_toacodec_component_drv, g12a_toacodec_dai_drv,
238 ARRAY_SIZE(g12a_toacodec_dai_drv));
239}
240
241static struct platform_driver g12a_toacodec_pdrv = {
242 .driver = {
243 .name = G12A_TOACODEC_DRV_NAME,
244 .of_match_table = g12a_toacodec_of_match,
245 },
246 .probe = g12a_toacodec_probe,
247};
248module_platform_driver(g12a_toacodec_pdrv);
249
250MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
251MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver");
252MODULE_LICENSE("GPL v2");
253
