1 // SPDX-License-Identifier: GPL-2.0
3 // Copyright (c) 2019 BayLibre, SAS.
4 // Author: Jerome Brunet <jbrunet@baylibre.com>
6 #include <linux/bitfield.h>
8 #include <linux/module.h>
9 #include <sound/pcm_params.h>
10 #include <linux/regmap.h>
11 #include <linux/reset.h>
12 #include <sound/soc.h>
13 #include <sound/soc-dai.h>
15 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
16 #include "meson-codec-glue.h"
18 #define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"
20 #define TOHDMITX_CTRL0 0x0
21 #define CTRL0_ENABLE_SHIFT 31
22 #define CTRL0_I2S_DAT_SEL_SHIFT 12
23 #define CTRL0_I2S_DAT_SEL (0x3 << CTRL0_I2S_DAT_SEL_SHIFT)
24 #define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8)
25 #define CTRL0_I2S_BLK_CAP_INV BIT(7)
26 #define CTRL0_I2S_BCLK_O_INV BIT(6)
27 #define CTRL0_I2S_BCLK_SEL GENMASK(5, 4)
28 #define CTRL0_SPDIF_CLK_CAP_INV BIT(3)
29 #define CTRL0_SPDIF_CLK_O_INV BIT(2)
30 #define CTRL0_SPDIF_SEL_SHIFT 1
31 #define CTRL0_SPDIF_SEL (0x1 << CTRL0_SPDIF_SEL_SHIFT)
32 #define CTRL0_SPDIF_CLK_SEL BIT(0)
34 static const char * const g12a_tohdmitx_i2s_mux_texts[] = {
35 "I2S A", "I2S B", "I2S C",
38 static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol,
39 struct snd_ctl_elem_value *ucontrol)
41 struct snd_soc_component *component =
42 snd_soc_dapm_kcontrol_component(kcontrol);
43 struct snd_soc_dapm_context *dapm =
44 snd_soc_dapm_kcontrol_dapm(kcontrol);
45 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
46 unsigned int mux, changed;
48 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
49 changed = snd_soc_component_test_bits(component, e->reg,
51 FIELD_PREP(CTRL0_I2S_DAT_SEL,
57 /* Force disconnect of the mux while updating */
58 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
60 snd_soc_component_update_bits(component, e->reg,
64 FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
65 FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
66 FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
68 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
73 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0,
74 CTRL0_I2S_DAT_SEL_SHIFT,
75 g12a_tohdmitx_i2s_mux_texts);
77 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
78 SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
79 snd_soc_dapm_get_enum_double,
80 g12a_tohdmitx_i2s_mux_put_enum);
82 static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
86 static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,
87 struct snd_ctl_elem_value *ucontrol)
89 struct snd_soc_component *component =
90 snd_soc_dapm_kcontrol_component(kcontrol);
91 struct snd_soc_dapm_context *dapm =
92 snd_soc_dapm_kcontrol_dapm(kcontrol);
93 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
94 unsigned int mux, changed;
96 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
97 changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0,
99 FIELD_PREP(CTRL0_SPDIF_SEL, mux));
104 /* Force disconnect of the mux while updating */
105 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
107 snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
110 FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
111 FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
113 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
118 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0,
119 CTRL0_SPDIF_SEL_SHIFT,
120 g12a_tohdmitx_spdif_mux_texts);
122 static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
123 SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
124 snd_soc_dapm_get_enum_double,
125 g12a_tohdmitx_spdif_mux_put_enum);
127 static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
128 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
129 CTRL0_ENABLE_SHIFT, 1, 0);
131 static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
132 SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
133 &g12a_tohdmitx_i2s_mux),
134 SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
135 &g12a_tohdmitx_out_enable),
136 SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
137 &g12a_tohdmitx_spdif_mux),
138 SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
139 &g12a_tohdmitx_out_enable),
142 static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
143 .hw_params = meson_codec_glue_input_hw_params,
144 .set_fmt = meson_codec_glue_input_set_fmt,
147 static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
148 .startup = meson_codec_glue_output_startup,
151 #define TOHDMITX_SPDIF_FORMATS \
152 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
153 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
155 #define TOHDMITX_I2S_FORMATS \
156 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
157 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
158 SNDRV_PCM_FMTBIT_S32_LE)
160 #define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \
162 .stream_name = xname " " xsuffix, \
164 .channels_max = (xchmax), \
166 .rate_max = 192000, \
170 #define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \
173 .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \
174 .ops = &g12a_tohdmitx_input_ops, \
175 .probe = meson_codec_glue_input_dai_probe, \
176 .remove = meson_codec_glue_input_dai_remove, \
179 #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \
182 .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \
183 .ops = &g12a_tohdmitx_output_ops, \
186 static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
187 TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
188 TOHDMITX_I2S_FORMATS, 8),
189 TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
190 TOHDMITX_I2S_FORMATS, 8),
191 TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
192 TOHDMITX_I2S_FORMATS, 8),
193 TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
194 TOHDMITX_I2S_FORMATS, 8),
195 TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
196 TOHDMITX_SPDIF_FORMATS, 2),
197 TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
198 TOHDMITX_SPDIF_FORMATS, 2),
199 TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
200 TOHDMITX_SPDIF_FORMATS, 2),
203 static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
205 /* Initialize the static clock parameters */
206 return snd_soc_component_write(c, TOHDMITX_CTRL0,
207 CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
210 static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
211 { "I2S SRC", "I2S A", "I2S IN A Playback" },
212 { "I2S SRC", "I2S B", "I2S IN B Playback" },
213 { "I2S SRC", "I2S C", "I2S IN C Playback" },
214 { "I2S OUT EN", "Switch", "I2S SRC" },
215 { "I2S OUT Capture", NULL, "I2S OUT EN" },
216 { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
217 { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
218 { "SPDIF OUT EN", "Switch", "SPDIF SRC" },
219 { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
222 static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
223 .probe = g12a_tohdmi_component_probe,
224 .dapm_widgets = g12a_tohdmitx_widgets,
225 .num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
226 .dapm_routes = g12a_tohdmitx_routes,
227 .num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
231 static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
237 static const struct of_device_id g12a_tohdmitx_of_match[] = {
238 { .compatible = "amlogic,g12a-tohdmitx", },
241 MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
243 static int g12a_tohdmitx_probe(struct platform_device *pdev)
245 struct device *dev = &pdev->dev;
250 ret = device_reset(dev);
254 regs = devm_platform_ioremap_resource(pdev, 0);
256 return PTR_ERR(regs);
258 map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
260 dev_err(dev, "failed to init regmap: %ld\n",
265 return devm_snd_soc_register_component(dev,
266 &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
267 ARRAY_SIZE(g12a_tohdmitx_dai_drv));
270 static struct platform_driver g12a_tohdmitx_pdrv = {
272 .name = G12A_TOHDMITX_DRV_NAME,
273 .of_match_table = g12a_tohdmitx_of_match,
275 .probe = g12a_tohdmitx_probe,
277 module_platform_driver(g12a_tohdmitx_pdrv);
279 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
280 MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
281 MODULE_LICENSE("GPL v2");