Commit | Line | Data |
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0edeea4f HV |
1 | /* |
2 | * wm8775 - driver version 0.0.1 | |
3 | * | |
4 | * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to> | |
5 | * | |
6 | * Based on saa7115 driver | |
7 | * | |
1f4b3365 HV |
8 | * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> |
9 | * - Cleanup | |
10 | * - V4L2 API update | |
11 | * - sound fixes | |
12 | * | |
0edeea4f HV |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
0edeea4f HV |
22 | */ |
23 | ||
0edeea4f HV |
24 | #include <linux/module.h> |
25 | #include <linux/types.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
0edeea4f | 27 | #include <linux/ioctl.h> |
7c0f6ba6 | 28 | #include <linux/uaccess.h> |
0edeea4f | 29 | #include <linux/i2c.h> |
33b687cf | 30 | #include <linux/videodev2.h> |
ca085fb9 | 31 | #include <media/v4l2-device.h> |
5aa9ae5e | 32 | #include <media/v4l2-ctrls.h> |
b5dcee22 | 33 | #include <media/i2c/wm8775.h> |
0edeea4f HV |
34 | |
35 | MODULE_DESCRIPTION("wm8775 driver"); | |
1f4b3365 | 36 | MODULE_AUTHOR("Ulf Eklund, Hans Verkuil"); |
0edeea4f HV |
37 | MODULE_LICENSE("GPL"); |
38 | ||
0edeea4f | 39 | |
d9a53aa9 | 40 | |
0edeea4f HV |
41 | /* ----------------------------------------------------------------------- */ |
42 | ||
43 | enum { | |
44 | R7 = 7, R11 = 11, | |
45 | R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23, | |
46 | TOT_REGS | |
47 | }; | |
48 | ||
6951803c LR |
49 | #define ALC_HOLD 0x85 /* R17: use zero cross detection, ALC hold time 42.6 ms */ |
50 | #define ALC_EN 0x100 /* R17: ALC enable */ | |
51 | ||
0edeea4f | 52 | struct wm8775_state { |
ca085fb9 | 53 | struct v4l2_subdev sd; |
5aa9ae5e HV |
54 | struct v4l2_ctrl_handler hdl; |
55 | struct v4l2_ctrl *mute; | |
6951803c LR |
56 | struct v4l2_ctrl *vol; |
57 | struct v4l2_ctrl *bal; | |
58 | struct v4l2_ctrl *loud; | |
0edeea4f | 59 | u8 input; /* Last selected input (0-0xf) */ |
0edeea4f HV |
60 | }; |
61 | ||
ca085fb9 | 62 | static inline struct wm8775_state *to_state(struct v4l2_subdev *sd) |
0edeea4f | 63 | { |
ca085fb9 HV |
64 | return container_of(sd, struct wm8775_state, sd); |
65 | } | |
66 | ||
5aa9ae5e HV |
67 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) |
68 | { | |
69 | return &container_of(ctrl->handler, struct wm8775_state, hdl)->sd; | |
70 | } | |
71 | ||
ca085fb9 HV |
72 | static int wm8775_write(struct v4l2_subdev *sd, int reg, u16 val) |
73 | { | |
74 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
0edeea4f HV |
75 | int i; |
76 | ||
77 | if (reg < 0 || reg >= TOT_REGS) { | |
ca085fb9 | 78 | v4l2_err(sd, "Invalid register R%d\n", reg); |
0edeea4f HV |
79 | return -1; |
80 | } | |
81 | ||
842441d4 HV |
82 | for (i = 0; i < 3; i++) |
83 | if (i2c_smbus_write_byte_data(client, | |
84 | (reg << 1) | (val >> 8), val & 0xff) == 0) | |
0edeea4f | 85 | return 0; |
ca085fb9 | 86 | v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg); |
0edeea4f HV |
87 | return -1; |
88 | } | |
89 | ||
6951803c LR |
90 | static void wm8775_set_audio(struct v4l2_subdev *sd, int quietly) |
91 | { | |
92 | struct wm8775_state *state = to_state(sd); | |
93 | u8 vol_l, vol_r; | |
94 | int muted = 0 != state->mute->val; | |
95 | u16 volume = (u16)state->vol->val; | |
96 | u16 balance = (u16)state->bal->val; | |
97 | ||
98 | /* normalize ( 65535 to 0 -> 255 to 0 (+24dB to -103dB) ) */ | |
99 | vol_l = (min(65536 - balance, 32768) * volume) >> 23; | |
100 | vol_r = (min(balance, (u16)32768) * volume) >> 23; | |
101 | ||
102 | /* Mute */ | |
103 | if (muted || quietly) | |
104 | wm8775_write(sd, R21, 0x0c0 | state->input); | |
105 | ||
106 | wm8775_write(sd, R14, vol_l | 0x100); /* 0x100= Left channel ADC zero cross enable */ | |
107 | wm8775_write(sd, R15, vol_r | 0x100); /* 0x100= Right channel ADC zero cross enable */ | |
108 | ||
109 | /* Un-mute */ | |
110 | if (!muted) | |
111 | wm8775_write(sd, R21, state->input); | |
112 | } | |
113 | ||
5325b427 HV |
114 | static int wm8775_s_routing(struct v4l2_subdev *sd, |
115 | u32 input, u32 output, u32 config) | |
0edeea4f | 116 | { |
ca085fb9 HV |
117 | struct wm8775_state *state = to_state(sd); |
118 | ||
119 | /* There are 4 inputs and one output. Zero or more inputs | |
120 | are multiplexed together to the output. Hence there are | |
121 | 16 combinations. | |
122 | If only one input is active (the normal case) then the | |
123 | input values 1, 2, 4 or 8 should be used. */ | |
5325b427 HV |
124 | if (input > 15) { |
125 | v4l2_err(sd, "Invalid input %d.\n", input); | |
0edeea4f HV |
126 | return -EINVAL; |
127 | } | |
5325b427 | 128 | state->input = input; |
3af41a33 | 129 | if (v4l2_ctrl_g_ctrl(state->mute)) |
ca085fb9 | 130 | return 0; |
6951803c LR |
131 | if (!v4l2_ctrl_g_ctrl(state->vol)) |
132 | return 0; | |
6951803c | 133 | wm8775_set_audio(sd, 1); |
ca085fb9 HV |
134 | return 0; |
135 | } | |
136 | ||
5aa9ae5e | 137 | static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl) |
ca085fb9 | 138 | { |
5aa9ae5e | 139 | struct v4l2_subdev *sd = to_sd(ctrl); |
ca085fb9 | 140 | |
5aa9ae5e HV |
141 | switch (ctrl->id) { |
142 | case V4L2_CID_AUDIO_MUTE: | |
6951803c LR |
143 | case V4L2_CID_AUDIO_VOLUME: |
144 | case V4L2_CID_AUDIO_BALANCE: | |
145 | wm8775_set_audio(sd, 0); | |
146 | return 0; | |
147 | case V4L2_CID_AUDIO_LOUDNESS: | |
148 | wm8775_write(sd, R17, (ctrl->val ? ALC_EN : 0) | ALC_HOLD); | |
5aa9ae5e HV |
149 | return 0; |
150 | } | |
151 | return -EINVAL; | |
ca085fb9 HV |
152 | } |
153 | ||
ca085fb9 HV |
154 | static int wm8775_log_status(struct v4l2_subdev *sd) |
155 | { | |
156 | struct wm8775_state *state = to_state(sd); | |
157 | ||
5aa9ae5e HV |
158 | v4l2_info(sd, "Input: %d\n", state->input); |
159 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); | |
0edeea4f HV |
160 | return 0; |
161 | } | |
162 | ||
b530a447 | 163 | static int wm8775_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq) |
ca085fb9 | 164 | { |
6951803c | 165 | wm8775_set_audio(sd, 0); |
ca085fb9 HV |
166 | return 0; |
167 | } | |
168 | ||
ca085fb9 HV |
169 | /* ----------------------------------------------------------------------- */ |
170 | ||
5aa9ae5e HV |
171 | static const struct v4l2_ctrl_ops wm8775_ctrl_ops = { |
172 | .s_ctrl = wm8775_s_ctrl, | |
173 | }; | |
174 | ||
ca085fb9 HV |
175 | static const struct v4l2_subdev_core_ops wm8775_core_ops = { |
176 | .log_status = wm8775_log_status, | |
ca085fb9 HV |
177 | }; |
178 | ||
179 | static const struct v4l2_subdev_tuner_ops wm8775_tuner_ops = { | |
180 | .s_frequency = wm8775_s_frequency, | |
181 | }; | |
182 | ||
183 | static const struct v4l2_subdev_audio_ops wm8775_audio_ops = { | |
184 | .s_routing = wm8775_s_routing, | |
185 | }; | |
186 | ||
187 | static const struct v4l2_subdev_ops wm8775_ops = { | |
188 | .core = &wm8775_core_ops, | |
189 | .tuner = &wm8775_tuner_ops, | |
190 | .audio = &wm8775_audio_ops, | |
191 | }; | |
192 | ||
0edeea4f HV |
193 | /* ----------------------------------------------------------------------- */ |
194 | ||
195 | /* i2c implementation */ | |
196 | ||
197 | /* | |
198 | * Generic i2c probe | |
199 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
200 | */ | |
201 | ||
d2653e92 JD |
202 | static int wm8775_probe(struct i2c_client *client, |
203 | const struct i2c_device_id *id) | |
0edeea4f | 204 | { |
0edeea4f | 205 | struct wm8775_state *state; |
ca085fb9 | 206 | struct v4l2_subdev *sd; |
6951803c LR |
207 | int err; |
208 | bool is_nova_s = false; | |
209 | ||
210 | if (client->dev.platform_data) { | |
211 | struct wm8775_platform_data *data = client->dev.platform_data; | |
212 | is_nova_s = data->is_nova_s; | |
213 | } | |
0edeea4f HV |
214 | |
215 | /* Check if the adapter supports the needed features */ | |
d9a53aa9 HV |
216 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
217 | return -EIO; | |
0edeea4f | 218 | |
ca085fb9 | 219 | v4l_info(client, "chip found @ 0x%02x (%s)\n", |
842441d4 | 220 | client->addr << 1, client->adapter->name); |
0edeea4f | 221 | |
c02b211d | 222 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
842441d4 | 223 | if (state == NULL) |
0edeea4f | 224 | return -ENOMEM; |
ca085fb9 HV |
225 | sd = &state->sd; |
226 | v4l2_i2c_subdev_init(sd, client, &wm8775_ops); | |
0edeea4f | 227 | state->input = 2; |
5aa9ae5e | 228 | |
6951803c | 229 | v4l2_ctrl_handler_init(&state->hdl, 4); |
5aa9ae5e HV |
230 | state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
231 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
6951803c LR |
232 | state->vol = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
233 | V4L2_CID_AUDIO_VOLUME, 0, 65535, (65535+99)/100, 0xCF00); /* 0dB*/ | |
234 | state->bal = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, | |
235 | V4L2_CID_AUDIO_BALANCE, 0, 65535, (65535+99)/100, 32768); | |
236 | state->loud = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, | |
237 | V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 1); | |
5aa9ae5e | 238 | sd->ctrl_handler = &state->hdl; |
6951803c LR |
239 | err = state->hdl.error; |
240 | if (err) { | |
5aa9ae5e | 241 | v4l2_ctrl_handler_free(&state->hdl); |
5aa9ae5e HV |
242 | return err; |
243 | } | |
0edeea4f | 244 | |
842441d4 HV |
245 | /* Initialize wm8775 */ |
246 | ||
247 | /* RESET */ | |
ca085fb9 | 248 | wm8775_write(sd, R23, 0x000); |
842441d4 | 249 | /* Disable zero cross detect timeout */ |
ca085fb9 | 250 | wm8775_write(sd, R7, 0x000); |
6951803c | 251 | /* HPF enable, left justified, 24-bit (Philips) mode */ |
46e67acd | 252 | wm8775_write(sd, R11, 0x021); |
842441d4 | 253 | /* Master mode, clock ratio 256fs */ |
ca085fb9 | 254 | wm8775_write(sd, R12, 0x102); |
842441d4 | 255 | /* Powered up */ |
ca085fb9 | 256 | wm8775_write(sd, R13, 0x000); |
6951803c LR |
257 | |
258 | if (!is_nova_s) { | |
259 | /* ADC gain +2.5dB, enable zero cross */ | |
260 | wm8775_write(sd, R14, 0x1d4); | |
261 | /* ADC gain +2.5dB, enable zero cross */ | |
262 | wm8775_write(sd, R15, 0x1d4); | |
263 | /* ALC Stereo, ALC target level -1dB FS max gain +8dB */ | |
264 | wm8775_write(sd, R16, 0x1bf); | |
265 | /* Enable gain control, use zero cross detection, | |
266 | ALC hold time 42.6 ms */ | |
267 | wm8775_write(sd, R17, 0x185); | |
268 | } else { | |
269 | /* ALC stereo, ALC target level -5dB FS, ALC max gain +8dB */ | |
270 | wm8775_write(sd, R16, 0x1bb); | |
271 | /* Set ALC mode and hold time */ | |
272 | wm8775_write(sd, R17, (state->loud->val ? ALC_EN : 0) | ALC_HOLD); | |
273 | } | |
842441d4 | 274 | /* ALC gain ramp up delay 34 s, ALC gain ramp down delay 33 ms */ |
ca085fb9 | 275 | wm8775_write(sd, R18, 0x0a2); |
842441d4 | 276 | /* Enable noise gate, threshold -72dBfs */ |
ca085fb9 | 277 | wm8775_write(sd, R19, 0x005); |
6951803c LR |
278 | if (!is_nova_s) { |
279 | /* Transient window 4ms, lower PGA gain limit -1dB */ | |
280 | wm8775_write(sd, R20, 0x07a); | |
281 | /* LRBOTH = 1, use input 2. */ | |
282 | wm8775_write(sd, R21, 0x102); | |
283 | } else { | |
284 | /* Transient window 4ms, ALC min gain -5dB */ | |
285 | wm8775_write(sd, R20, 0x0fb); | |
286 | ||
287 | wm8775_set_audio(sd, 1); /* set volume/mute/mux */ | |
288 | } | |
0edeea4f HV |
289 | return 0; |
290 | } | |
291 | ||
d9a53aa9 | 292 | static int wm8775_remove(struct i2c_client *client) |
0edeea4f | 293 | { |
ca085fb9 | 294 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
5aa9ae5e | 295 | struct wm8775_state *state = to_state(sd); |
ca085fb9 HV |
296 | |
297 | v4l2_device_unregister_subdev(sd); | |
5aa9ae5e | 298 | v4l2_ctrl_handler_free(&state->hdl); |
0edeea4f HV |
299 | return 0; |
300 | } | |
301 | ||
af294867 JD |
302 | static const struct i2c_device_id wm8775_id[] = { |
303 | { "wm8775", 0 }, | |
304 | { } | |
305 | }; | |
306 | MODULE_DEVICE_TABLE(i2c, wm8775_id); | |
307 | ||
a5b2c493 HV |
308 | static struct i2c_driver wm8775_driver = { |
309 | .driver = { | |
a5b2c493 HV |
310 | .name = "wm8775", |
311 | }, | |
312 | .probe = wm8775_probe, | |
313 | .remove = wm8775_remove, | |
314 | .id_table = wm8775_id, | |
0edeea4f | 315 | }; |
a5b2c493 | 316 | |
c6e8d86f | 317 | module_i2c_driver(wm8775_driver); |