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6#include <linux/clk.h>
7#include <linux/delay.h>
8#include <linux/module.h>
9#include <linux/regmap.h>
10#include <linux/regulator/consumer.h>
11#include <linux/reset.h>
12#include <sound/soc.h>
13#include <sound/tlv.h>
14
15#define BLOCK_EN 0x00
16#define LORN_EN 0
17#define LORP_EN 1
18#define LOLN_EN 2
19#define LOLP_EN 3
20#define DACR_EN 4
21#define DACL_EN 5
22#define DACR_INV 20
23#define DACL_INV 21
24#define DACR_SRC 22
25#define DACL_SRC 23
26#define REFP_BUF_EN BIT(12)
27#define BIAS_CURRENT_EN BIT(13)
28#define VMID_GEN_FAST BIT(14)
29#define VMID_GEN_EN BIT(15)
30#define I2S_MODE BIT(30)
31#define VOL_CTRL0 0x04
32#define GAIN_H 31
33#define GAIN_L 23
34#define VOL_CTRL1 0x08
35#define DAC_MONO 8
36#define RAMP_RATE 10
37#define VC_RAMP_MODE 12
38#define MUTE_MODE 13
39#define UNMUTE_MODE 14
40#define DAC_SOFT_MUTE 15
41#define DACR_VC 16
42#define DACL_VC 24
43#define LINEOUT_CFG 0x0c
44#define LORN_POL 0
45#define LORP_POL 4
46#define LOLN_POL 8
47#define LOLP_POL 12
48#define POWER_CFG 0x10
49
50struct t9015 {
51 struct clk *pclk;
52 struct regulator *avdd;
53};
54
55static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
56{
57 struct snd_soc_component *component = dai->component;
58 unsigned int val;
59
60 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
61 case SND_SOC_DAIFMT_CBM_CFM:
62 val = I2S_MODE;
63 break;
64
65 case SND_SOC_DAIFMT_CBS_CFS:
66 val = 0;
67 break;
68
69 default:
70 return -EINVAL;
71 }
72
73 snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val);
74
75 if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) &&
76 ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J))
77 return -EINVAL;
78
79 return 0;
80}
81
82static const struct snd_soc_dai_ops t9015_dai_ops = {
83 .set_fmt = t9015_dai_set_fmt,
84};
85
86static struct snd_soc_dai_driver t9015_dai = {
87 .name = "t9015-hifi",
88 .playback = {
89 .stream_name = "Playback",
90 .channels_min = 1,
91 .channels_max = 2,
92 .rates = SNDRV_PCM_RATE_8000_96000,
93 .formats = (SNDRV_PCM_FMTBIT_S8 |
94 SNDRV_PCM_FMTBIT_S16_LE |
95 SNDRV_PCM_FMTBIT_S20_LE |
96 SNDRV_PCM_FMTBIT_S24_LE),
97 },
98 .ops = &t9015_dai_ops,
99};
100
101static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0);
102
103static const char * const ramp_rate_txt[] = { "Fast", "Slow" };
104static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE,
105 ramp_rate_txt);
106
107static const char * const dacr_in_txt[] = { "Right", "Left" };
108static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt);
109
110static const char * const dacl_in_txt[] = { "Left", "Right" };
111static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt);
112
113static const char * const mono_txt[] = { "Stereo", "Mono"};
114static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt);
115
116static const struct snd_kcontrol_new t9015_snd_controls[] = {
117
118 SOC_ENUM("Playback Channel Mode", mono_enum),
119 SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1),
120 SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC,
121 0xff, 0, dac_vol_tlv),
122
123
124 SOC_ENUM("Ramp Rate", ramp_rate_enum),
125 SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0),
126 SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0),
127 SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0),
128};
129
130static const struct snd_kcontrol_new t9015_right_dac_mux =
131 SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum);
132static const struct snd_kcontrol_new t9015_left_dac_mux =
133 SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum);
134
135static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = {
136 SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0),
137 SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0),
138 SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0,
139 &t9015_right_dac_mux),
140 SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0,
141 &t9015_left_dac_mux),
142 SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0),
143 SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0),
144 SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0,
145 NULL, 0),
146 SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0,
147 NULL, 0),
148 SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0,
149 NULL, 0),
150 SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0,
151 NULL, 0),
152 SND_SOC_DAPM_OUTPUT("LORN"),
153 SND_SOC_DAPM_OUTPUT("LORP"),
154 SND_SOC_DAPM_OUTPUT("LOLN"),
155 SND_SOC_DAPM_OUTPUT("LOLP"),
156};
157
158static const struct snd_soc_dapm_route t9015_dapm_routes[] = {
159 { "Right IN", NULL, "Playback" },
160 { "Left IN", NULL, "Playback" },
161 { "Right DAC Sel", "Right", "Right IN" },
162 { "Right DAC Sel", "Left", "Left IN" },
163 { "Left DAC Sel", "Right", "Right IN" },
164 { "Left DAC Sel", "Left", "Left IN" },
165 { "Right DAC", NULL, "Right DAC Sel" },
166 { "Left DAC", NULL, "Left DAC Sel" },
167 { "Right- Driver", NULL, "Right DAC" },
168 { "Right+ Driver", NULL, "Right DAC" },
169 { "Left- Driver", NULL, "Left DAC" },
170 { "Left+ Driver", NULL, "Left DAC" },
171 { "LORN", NULL, "Right- Driver", },
172 { "LORP", NULL, "Right+ Driver", },
173 { "LOLN", NULL, "Left- Driver", },
174 { "LOLP", NULL, "Left+ Driver", },
175};
176
177static int t9015_set_bias_level(struct snd_soc_component *component,
178 enum snd_soc_bias_level level)
179{
180 struct t9015 *priv = snd_soc_component_get_drvdata(component);
181 enum snd_soc_bias_level now =
182 snd_soc_component_get_bias_level(component);
183 int ret;
184
185 switch (level) {
186 case SND_SOC_BIAS_ON:
187 snd_soc_component_update_bits(component, BLOCK_EN,
188 BIAS_CURRENT_EN,
189 BIAS_CURRENT_EN);
190 break;
191 case SND_SOC_BIAS_PREPARE:
192 snd_soc_component_update_bits(component, BLOCK_EN,
193 BIAS_CURRENT_EN,
194 0);
195 break;
196 case SND_SOC_BIAS_STANDBY:
197 ret = regulator_enable(priv->avdd);
198 if (ret) {
199 dev_err(component->dev, "AVDD enable failed\n");
200 return ret;
201 }
202
203 if (now == SND_SOC_BIAS_OFF) {
204 snd_soc_component_update_bits(component, BLOCK_EN,
205 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,
206 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN);
207
208 mdelay(200);
209 snd_soc_component_update_bits(component, BLOCK_EN,
210 VMID_GEN_FAST,
211 0);
212 }
213
214 break;
215 case SND_SOC_BIAS_OFF:
216 snd_soc_component_update_bits(component, BLOCK_EN,
217 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,
218 0);
219
220 regulator_disable(priv->avdd);
221 break;
222 }
223
224 return 0;
225}
226
227static const struct snd_soc_component_driver t9015_codec_driver = {
228 .set_bias_level = t9015_set_bias_level,
229 .controls = t9015_snd_controls,
230 .num_controls = ARRAY_SIZE(t9015_snd_controls),
231 .dapm_widgets = t9015_dapm_widgets,
232 .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets),
233 .dapm_routes = t9015_dapm_routes,
234 .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes),
235 .suspend_bias_off = 1,
236 .endianness = 1,
237 .non_legacy_dai_naming = 1,
238};
239
240static const struct regmap_config t9015_regmap_config = {
241 .reg_bits = 32,
242 .reg_stride = 4,
243 .val_bits = 32,
244 .max_register = POWER_CFG,
245};
246
247static int t9015_probe(struct platform_device *pdev)
248{
249 struct device *dev = &pdev->dev;
250 struct t9015 *priv;
251 void __iomem *regs;
252 struct regmap *regmap;
253 int ret;
254
255 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
256 if (!priv)
257 return -ENOMEM;
258 platform_set_drvdata(pdev, priv);
259
260 priv->pclk = devm_clk_get(dev, "pclk");
261 if (IS_ERR(priv->pclk)) {
262 if (PTR_ERR(priv->pclk) != -EPROBE_DEFER)
263 dev_err(dev, "failed to get core clock\n");
264 return PTR_ERR(priv->pclk);
265 }
266
267 priv->avdd = devm_regulator_get(dev, "AVDD");
268 if (IS_ERR(priv->avdd)) {
269 if (PTR_ERR(priv->avdd) != -EPROBE_DEFER)
270 dev_err(dev, "failed to AVDD\n");
271 return PTR_ERR(priv->avdd);
272 }
273
274 ret = clk_prepare_enable(priv->pclk);
275 if (ret) {
276 dev_err(dev, "core clock enable failed\n");
277 return ret;
278 }
279
280 ret = devm_add_action_or_reset(dev,
281 (void(*)(void *))clk_disable_unprepare,
282 priv->pclk);
283 if (ret)
284 return ret;
285
286 ret = device_reset(dev);
287 if (ret) {
288 dev_err(dev, "reset failed\n");
289 return ret;
290 }
291
292 regs = devm_platform_ioremap_resource(pdev, 0);
293 if (IS_ERR(regs)) {
294 dev_err(dev, "register map failed\n");
295 return PTR_ERR(regs);
296 }
297
298 regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config);
299 if (IS_ERR(regmap)) {
300 dev_err(dev, "regmap init failed\n");
301 return PTR_ERR(regmap);
302 }
303
304
305
306
307
308
309 regmap_write(regmap, LINEOUT_CFG, 0x1111);
310
311 return devm_snd_soc_register_component(dev, &t9015_codec_driver,
312 &t9015_dai, 1);
313}
314
315static const struct of_device_id t9015_ids[] __maybe_unused = {
316 { .compatible = "amlogic,t9015", },
317 { }
318};
319MODULE_DEVICE_TABLE(of, t9015_ids);
320
321static struct platform_driver t9015_driver = {
322 .driver = {
323 .name = "t9015-codec",
324 .of_match_table = of_match_ptr(t9015_ids),
325 },
326 .probe = t9015_probe,
327};
328
329module_platform_driver(t9015_driver);
330
331MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver");
332MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
333MODULE_LICENSE("GPL");
334
