2 * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
4 * Copyright (C) Nokia Corporation
6 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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>
34 #include <linux/of_gpio.h>
35 #include <linux/regmap.h>
37 #include "tpa6130a2.h"
44 /* This struct is used to save the context */
45 struct tpa6130a2_data
{
47 struct regmap
*regmap
;
48 struct regulator
*supply
;
53 static int tpa6130a2_power(struct tpa6130a2_data
*data
, bool enable
)
58 ret
= regulator_enable(data
->supply
);
61 "Failed to enable supply: %d\n", ret
);
65 if (data
->power_gpio
>= 0)
66 gpio_set_value(data
->power_gpio
, 1);
69 if (data
->power_gpio
>= 0)
70 gpio_set_value(data
->power_gpio
, 0);
72 ret
= regulator_disable(data
->supply
);
75 "Failed to disable supply: %d\n", ret
);
79 /* device regs does not match the cache state anymore */
80 regcache_mark_dirty(data
->regmap
);
86 static int tpa6130a2_power_event(struct snd_soc_dapm_widget
*w
,
87 struct snd_kcontrol
*kctrl
, int event
)
89 struct snd_soc_component
*c
= snd_soc_dapm_to_component(w
->dapm
);
90 struct tpa6130a2_data
*data
= snd_soc_component_get_drvdata(c
);
93 /* before widget power up */
94 if (SND_SOC_DAPM_EVENT_ON(event
)) {
95 /* Turn on the chip */
96 tpa6130a2_power(data
, true);
97 /* Sync the registers */
98 ret
= regcache_sync(data
->regmap
);
100 dev_err(c
->dev
, "Failed to initialize chip\n");
101 tpa6130a2_power(data
, false);
104 /* after widget power down */
106 tpa6130a2_power(data
, false);
113 * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
116 static const DECLARE_TLV_DB_RANGE(tpa6130_tlv
,
117 0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
118 2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
119 4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
120 6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
121 8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
122 10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
123 12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
124 14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
125 21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
126 38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
129 static const struct snd_kcontrol_new tpa6130a2_controls
[] = {
130 SOC_SINGLE_TLV("Headphone Playback Volume",
131 TPA6130A2_REG_VOL_MUTE
, 0, 0x3f, 0,
135 static const DECLARE_TLV_DB_RANGE(tpa6140_tlv
,
136 0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
137 9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
138 17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
141 static const struct snd_kcontrol_new tpa6140a2_controls
[] = {
142 SOC_SINGLE_TLV("Headphone Playback Volume",
143 TPA6130A2_REG_VOL_MUTE
, 1, 0x1f, 0,
147 static int tpa6130a2_component_probe(struct snd_soc_component
*component
)
149 struct tpa6130a2_data
*data
= snd_soc_component_get_drvdata(component
);
151 if (data
->id
== TPA6140A2
)
152 return snd_soc_add_component_controls(component
,
153 tpa6140a2_controls
, ARRAY_SIZE(tpa6140a2_controls
));
155 return snd_soc_add_component_controls(component
,
156 tpa6130a2_controls
, ARRAY_SIZE(tpa6130a2_controls
));
159 static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets
[] = {
160 SND_SOC_DAPM_INPUT("LEFTIN"),
161 SND_SOC_DAPM_INPUT("RIGHTIN"),
162 SND_SOC_DAPM_OUTPUT("HPLEFT"),
163 SND_SOC_DAPM_OUTPUT("HPRIGHT"),
165 SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE
,
166 TPA6130A2_HP_EN_L_SHIFT
, 1, NULL
, 0),
167 SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE
,
168 TPA6130A2_HP_EN_R_SHIFT
, 1, NULL
, 0),
169 SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL
,
170 TPA6130A2_HP_EN_L_SHIFT
, 0, NULL
, 0),
171 SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL
,
172 TPA6130A2_HP_EN_R_SHIFT
, 0, NULL
, 0),
174 SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL
,
175 TPA6130A2_SWS_SHIFT
, 1, tpa6130a2_power_event
,
176 SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMD
),
179 static const struct snd_soc_dapm_route tpa6130a2_dapm_routes
[] = {
180 { "Left PGA", NULL
, "LEFTIN" },
181 { "Right PGA", NULL
, "RIGHTIN" },
183 { "Left Mute", NULL
, "Left PGA" },
184 { "Right Mute", NULL
, "Right PGA" },
186 { "HPLEFT", NULL
, "Left Mute" },
187 { "HPRIGHT", NULL
, "Right Mute" },
189 { "Left PGA", NULL
, "Power" },
190 { "Right PGA", NULL
, "Power" },
193 struct snd_soc_component_driver tpa6130a2_component_driver
= {
195 .probe
= tpa6130a2_component_probe
,
196 .dapm_widgets
= tpa6130a2_dapm_widgets
,
197 .num_dapm_widgets
= ARRAY_SIZE(tpa6130a2_dapm_widgets
),
198 .dapm_routes
= tpa6130a2_dapm_routes
,
199 .num_dapm_routes
= ARRAY_SIZE(tpa6130a2_dapm_routes
),
202 static const struct reg_default tpa6130a2_reg_defaults
[] = {
203 { TPA6130A2_REG_CONTROL
, TPA6130A2_SWS
},
204 { TPA6130A2_REG_VOL_MUTE
, TPA6130A2_MUTE_R
| TPA6130A2_MUTE_L
},
207 static const struct regmap_config tpa6130a2_regmap_config
= {
210 .max_register
= TPA6130A2_REG_VERSION
,
211 .reg_defaults
= tpa6130a2_reg_defaults
,
212 .num_reg_defaults
= ARRAY_SIZE(tpa6130a2_reg_defaults
),
213 .cache_type
= REGCACHE_RBTREE
,
216 static int tpa6130a2_probe(struct i2c_client
*client
,
217 const struct i2c_device_id
*id
)
220 struct tpa6130a2_data
*data
;
221 struct tpa6130a2_platform_data
*pdata
= client
->dev
.platform_data
;
222 struct device_node
*np
= client
->dev
.of_node
;
223 const char *regulator
;
224 unsigned int version
;
229 data
= devm_kzalloc(&client
->dev
, sizeof(*data
), GFP_KERNEL
);
235 data
->regmap
= devm_regmap_init_i2c(client
, &tpa6130a2_regmap_config
);
236 if (IS_ERR(data
->regmap
))
237 return PTR_ERR(data
->regmap
);
240 data
->power_gpio
= pdata
->power_gpio
;
242 data
->power_gpio
= of_get_named_gpio(np
, "power-gpio", 0);
244 dev_err(dev
, "Platform data not set\n");
249 i2c_set_clientdata(client
, data
);
251 data
->id
= id
->driver_data
;
253 if (data
->power_gpio
>= 0) {
254 ret
= devm_gpio_request(dev
, data
->power_gpio
,
257 dev_err(dev
, "Failed to request power GPIO (%d)\n",
261 gpio_direction_output(data
->power_gpio
, 0);
266 dev_warn(dev
, "Unknown TPA model (%d). Assuming 6130A2\n",
276 data
->supply
= devm_regulator_get(dev
, regulator
);
277 if (IS_ERR(data
->supply
)) {
278 ret
= PTR_ERR(data
->supply
);
279 dev_err(dev
, "Failed to request supply: %d\n", ret
);
283 ret
= tpa6130a2_power(data
, true);
289 regmap_read(data
->regmap
, TPA6130A2_REG_VERSION
, &version
);
290 version
&= TPA6130A2_VERSION_MASK
;
291 if ((version
!= 1) && (version
!= 2))
292 dev_warn(dev
, "UNTESTED version detected (%d)\n", version
);
294 /* Disable the chip */
295 ret
= tpa6130a2_power(data
, false);
299 return devm_snd_soc_register_component(&client
->dev
,
300 &tpa6130a2_component_driver
, NULL
, 0);
303 static const struct i2c_device_id tpa6130a2_id
[] = {
304 { "tpa6130a2", TPA6130A2
},
305 { "tpa6140a2", TPA6140A2
},
308 MODULE_DEVICE_TABLE(i2c
, tpa6130a2_id
);
310 #if IS_ENABLED(CONFIG_OF)
311 static const struct of_device_id tpa6130a2_of_match
[] = {
312 { .compatible
= "ti,tpa6130a2", },
313 { .compatible
= "ti,tpa6140a2" },
316 MODULE_DEVICE_TABLE(of
, tpa6130a2_of_match
);
319 static struct i2c_driver tpa6130a2_i2c_driver
= {
322 .of_match_table
= of_match_ptr(tpa6130a2_of_match
),
324 .probe
= tpa6130a2_probe
,
325 .id_table
= tpa6130a2_id
,
328 module_i2c_driver(tpa6130a2_i2c_driver
);
330 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
331 MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
332 MODULE_LICENSE("GPL");