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23#include <linux/module.h>
24#include <linux/errno.h>
25#include <linux/device.h>
26#include <linux/i2c.h>
27#include <linux/gpio.h>
28#include <linux/regulator/consumer.h>
29#include <linux/slab.h>
30#include <sound/tpa6130a2-plat.h>
31#include <sound/soc.h>
32#include <sound/tlv.h>
33#include <linux/of.h>
34#include <linux/of_gpio.h>
35#include <linux/regmap.h>
36
37#include "tpa6130a2.h"
38
39enum tpa_model {
40 TPA6130A2,
41 TPA6140A2,
42};
43
44
45struct tpa6130a2_data {
46 struct device *dev;
47 struct regmap *regmap;
48 struct regulator *supply;
49 int power_gpio;
50 enum tpa_model id;
51};
52
53static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
54{
55 int ret = 0, ret2;
56
57 if (enable) {
58 ret = regulator_enable(data->supply);
59 if (ret != 0) {
60 dev_err(data->dev,
61 "Failed to enable supply: %d\n", ret);
62 return ret;
63 }
64
65 if (data->power_gpio >= 0)
66 gpio_set_value(data->power_gpio, 1);
67
68
69 regcache_cache_only(data->regmap, false);
70 ret = regcache_sync(data->regmap);
71 if (ret != 0) {
72 dev_err(data->dev,
73 "Failed to sync registers: %d\n", ret);
74 regcache_cache_only(data->regmap, true);
75 if (data->power_gpio >= 0)
76 gpio_set_value(data->power_gpio, 0);
77 ret2 = regulator_disable(data->supply);
78 if (ret2 != 0)
79 dev_err(data->dev,
80 "Failed to disable supply: %d\n", ret2);
81 return ret;
82 }
83 } else {
84
85
86
87
88 regcache_mark_dirty(data->regmap);
89 regcache_cache_only(data->regmap, true);
90
91
92 if (data->power_gpio >= 0)
93 gpio_set_value(data->power_gpio, 0);
94
95 ret = regulator_disable(data->supply);
96 if (ret != 0) {
97 dev_err(data->dev,
98 "Failed to disable supply: %d\n", ret);
99 return ret;
100 }
101 }
102
103 return ret;
104}
105
106static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
107 struct snd_kcontrol *kctrl, int event)
108{
109 struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
110 struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);
111
112 if (SND_SOC_DAPM_EVENT_ON(event)) {
113
114 return tpa6130a2_power(data, true);
115 } else {
116
117 return tpa6130a2_power(data, false);
118 }
119}
120
121
122
123
124
125static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
126 0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
127 2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
128 4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
129 6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
130 8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
131 10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
132 12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
133 14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
134 21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
135 38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
136);
137
138static const struct snd_kcontrol_new tpa6130a2_controls[] = {
139 SOC_SINGLE_TLV("Headphone Playback Volume",
140 TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
141 tpa6130_tlv),
142};
143
144static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
145 0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
146 9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
147 17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
148);
149
150static const struct snd_kcontrol_new tpa6140a2_controls[] = {
151 SOC_SINGLE_TLV("Headphone Playback Volume",
152 TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
153 tpa6140_tlv),
154};
155
156static int tpa6130a2_component_probe(struct snd_soc_component *component)
157{
158 struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);
159
160 if (data->id == TPA6140A2)
161 return snd_soc_add_component_controls(component,
162 tpa6140a2_controls, ARRAY_SIZE(tpa6140a2_controls));
163 else
164 return snd_soc_add_component_controls(component,
165 tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
166}
167
168static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
169 SND_SOC_DAPM_INPUT("LEFTIN"),
170 SND_SOC_DAPM_INPUT("RIGHTIN"),
171 SND_SOC_DAPM_OUTPUT("HPLEFT"),
172 SND_SOC_DAPM_OUTPUT("HPRIGHT"),
173
174 SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
175 TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
176 SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
177 TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
178 SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
179 TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
180 SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
181 TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),
182
183 SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
184 TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
185 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
186};
187
188static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
189 { "Left PGA", NULL, "LEFTIN" },
190 { "Right PGA", NULL, "RIGHTIN" },
191
192 { "Left Mute", NULL, "Left PGA" },
193 { "Right Mute", NULL, "Right PGA" },
194
195 { "HPLEFT", NULL, "Left Mute" },
196 { "HPRIGHT", NULL, "Right Mute" },
197
198 { "Left PGA", NULL, "Power" },
199 { "Right PGA", NULL, "Power" },
200};
201
202static const struct snd_soc_component_driver tpa6130a2_component_driver = {
203 .name = "tpa6130a2",
204 .probe = tpa6130a2_component_probe,
205 .dapm_widgets = tpa6130a2_dapm_widgets,
206 .num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
207 .dapm_routes = tpa6130a2_dapm_routes,
208 .num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
209};
210
211static const struct reg_default tpa6130a2_reg_defaults[] = {
212 { TPA6130A2_REG_CONTROL, TPA6130A2_SWS },
213 { TPA6130A2_REG_VOL_MUTE, TPA6130A2_MUTE_R | TPA6130A2_MUTE_L },
214};
215
216static const struct regmap_config tpa6130a2_regmap_config = {
217 .reg_bits = 8,
218 .val_bits = 8,
219 .max_register = TPA6130A2_REG_VERSION,
220 .reg_defaults = tpa6130a2_reg_defaults,
221 .num_reg_defaults = ARRAY_SIZE(tpa6130a2_reg_defaults),
222 .cache_type = REGCACHE_RBTREE,
223};
224
225static int tpa6130a2_probe(struct i2c_client *client,
226 const struct i2c_device_id *id)
227{
228 struct device *dev;
229 struct tpa6130a2_data *data;
230 struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
231 struct device_node *np = client->dev.of_node;
232 const char *regulator;
233 unsigned int version;
234 int ret;
235
236 dev = &client->dev;
237
238 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
239 if (!data)
240 return -ENOMEM;
241
242 data->dev = dev;
243
244 data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
245 if (IS_ERR(data->regmap))
246 return PTR_ERR(data->regmap);
247
248 if (pdata) {
249 data->power_gpio = pdata->power_gpio;
250 } else if (np) {
251 data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
252 } else {
253 dev_err(dev, "Platform data not set\n");
254 dump_stack();
255 return -ENODEV;
256 }
257
258 i2c_set_clientdata(client, data);
259
260 data->id = id->driver_data;
261
262 if (data->power_gpio >= 0) {
263 ret = devm_gpio_request(dev, data->power_gpio,
264 "tpa6130a2 enable");
265 if (ret < 0) {
266 dev_err(dev, "Failed to request power GPIO (%d)\n",
267 data->power_gpio);
268 return ret;
269 }
270 gpio_direction_output(data->power_gpio, 0);
271 }
272
273 switch (data->id) {
274 default:
275 dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",
276 data->id);
277 case TPA6130A2:
278 regulator = "Vdd";
279 break;
280 case TPA6140A2:
281 regulator = "AVdd";
282 break;
283 }
284
285 data->supply = devm_regulator_get(dev, regulator);
286 if (IS_ERR(data->supply)) {
287 ret = PTR_ERR(data->supply);
288 dev_err(dev, "Failed to request supply: %d\n", ret);
289 return ret;
290 }
291
292 ret = tpa6130a2_power(data, true);
293 if (ret != 0)
294 return ret;
295
296
297
298 regmap_read(data->regmap, TPA6130A2_REG_VERSION, &version);
299 version &= TPA6130A2_VERSION_MASK;
300 if ((version != 1) && (version != 2))
301 dev_warn(dev, "UNTESTED version detected (%d)\n", version);
302
303
304 ret = tpa6130a2_power(data, false);
305 if (ret != 0)
306 return ret;
307
308 return devm_snd_soc_register_component(&client->dev,
309 &tpa6130a2_component_driver, NULL, 0);
310}
311
312static const struct i2c_device_id tpa6130a2_id[] = {
313 { "tpa6130a2", TPA6130A2 },
314 { "tpa6140a2", TPA6140A2 },
315 { }
316};
317MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
318
319#if IS_ENABLED(CONFIG_OF)
320static const struct of_device_id tpa6130a2_of_match[] = {
321 { .compatible = "ti,tpa6130a2", },
322 { .compatible = "ti,tpa6140a2" },
323 {},
324};
325MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
326#endif
327
328static struct i2c_driver tpa6130a2_i2c_driver = {
329 .driver = {
330 .name = "tpa6130a2",
331 .of_match_table = of_match_ptr(tpa6130a2_of_match),
332 },
333 .probe = tpa6130a2_probe,
334 .id_table = tpa6130a2_id,
335};
336
337module_i2c_driver(tpa6130a2_i2c_driver);
338
339MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
340MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
341MODULE_LICENSE("GPL");
342
