Commit | Line | Data |
---|---|---|
f4067fd4 HV |
1 | /* |
2 | * cs53l32a (Adaptec AVC-2010 and AVC-2410) i2c ivtv driver. | |
3 | * Copyright (C) 2005 Martin Vaughan | |
4 | * | |
5 | * Audio source switching for Adaptec AVC-2410 added by Trev Jackson | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
f4067fd4 HV |
16 | */ |
17 | ||
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/types.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
f4067fd4 | 22 | #include <linux/ioctl.h> |
7c0f6ba6 | 23 | #include <linux/uaccess.h> |
f4067fd4 | 24 | #include <linux/i2c.h> |
33b687cf | 25 | #include <linux/videodev2.h> |
825c6aa2 | 26 | #include <media/v4l2-device.h> |
251190cf | 27 | #include <media/v4l2-ctrls.h> |
f4067fd4 HV |
28 | |
29 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
30 | MODULE_AUTHOR("Martin Vaughan"); | |
31 | MODULE_LICENSE("GPL"); | |
32 | ||
90ab5ee9 | 33 | static bool debug; |
f4067fd4 HV |
34 | |
35 | module_param(debug, bool, 0644); | |
36 | ||
61a2d07d | 37 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
f4067fd4 | 38 | |
f4067fd4 | 39 | |
251190cf HV |
40 | struct cs53l32a_state { |
41 | struct v4l2_subdev sd; | |
42 | struct v4l2_ctrl_handler hdl; | |
43 | }; | |
44 | ||
45 | static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd) | |
46 | { | |
47 | return container_of(sd, struct cs53l32a_state, sd); | |
48 | } | |
49 | ||
50 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
51 | { | |
52 | return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd; | |
53 | } | |
54 | ||
f4067fd4 HV |
55 | /* ----------------------------------------------------------------------- */ |
56 | ||
825c6aa2 | 57 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
f4067fd4 | 58 | { |
825c6aa2 HV |
59 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
60 | ||
f4067fd4 HV |
61 | return i2c_smbus_write_byte_data(client, reg, value); |
62 | } | |
63 | ||
825c6aa2 | 64 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
f4067fd4 | 65 | { |
825c6aa2 HV |
66 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
67 | ||
f4067fd4 HV |
68 | return i2c_smbus_read_byte_data(client, reg); |
69 | } | |
70 | ||
5325b427 HV |
71 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, |
72 | u32 input, u32 output, u32 config) | |
f4067fd4 | 73 | { |
825c6aa2 HV |
74 | /* There are 2 physical inputs, but the second input can be |
75 | placed in two modes, the first mode bypasses the PGA (gain), | |
76 | the second goes through the PGA. Hence there are three | |
77 | possible inputs to choose from. */ | |
5325b427 HV |
78 | if (input > 2) { |
79 | v4l2_err(sd, "Invalid input %d.\n", input); | |
f4067fd4 HV |
80 | return -EINVAL; |
81 | } | |
5325b427 | 82 | cs53l32a_write(sd, 0x01, 0x01 + (input << 4)); |
825c6aa2 HV |
83 | return 0; |
84 | } | |
85 | ||
251190cf | 86 | static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl) |
825c6aa2 | 87 | { |
251190cf | 88 | struct v4l2_subdev *sd = to_sd(ctrl); |
825c6aa2 | 89 | |
251190cf HV |
90 | switch (ctrl->id) { |
91 | case V4L2_CID_AUDIO_MUTE: | |
92 | cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30); | |
93 | return 0; | |
94 | case V4L2_CID_AUDIO_VOLUME: | |
95 | cs53l32a_write(sd, 0x04, (u8)ctrl->val); | |
96 | cs53l32a_write(sd, 0x05, (u8)ctrl->val); | |
825c6aa2 HV |
97 | return 0; |
98 | } | |
251190cf | 99 | return -EINVAL; |
f4067fd4 HV |
100 | } |
101 | ||
825c6aa2 HV |
102 | static int cs53l32a_log_status(struct v4l2_subdev *sd) |
103 | { | |
251190cf | 104 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 | 105 | u8 v = cs53l32a_read(sd, 0x01); |
825c6aa2 | 106 | |
251190cf HV |
107 | v4l2_info(sd, "Input: %d\n", (v >> 4) & 3); |
108 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); | |
825c6aa2 HV |
109 | return 0; |
110 | } | |
111 | ||
825c6aa2 HV |
112 | /* ----------------------------------------------------------------------- */ |
113 | ||
251190cf HV |
114 | static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = { |
115 | .s_ctrl = cs53l32a_s_ctrl, | |
116 | }; | |
117 | ||
825c6aa2 HV |
118 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { |
119 | .log_status = cs53l32a_log_status, | |
825c6aa2 HV |
120 | }; |
121 | ||
122 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
123 | .s_routing = cs53l32a_s_routing, | |
124 | }; | |
125 | ||
126 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
127 | .core = &cs53l32a_core_ops, | |
128 | .audio = &cs53l32a_audio_ops, | |
129 | }; | |
130 | ||
f4067fd4 HV |
131 | /* ----------------------------------------------------------------------- */ |
132 | ||
133 | /* i2c implementation */ | |
134 | ||
135 | /* | |
136 | * Generic i2c probe | |
137 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
138 | */ | |
139 | ||
d2653e92 JD |
140 | static int cs53l32a_probe(struct i2c_client *client, |
141 | const struct i2c_device_id *id) | |
f4067fd4 | 142 | { |
251190cf | 143 | struct cs53l32a_state *state; |
825c6aa2 | 144 | struct v4l2_subdev *sd; |
f4067fd4 HV |
145 | int i; |
146 | ||
147 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 148 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 149 | return -EIO; |
f4067fd4 | 150 | |
af294867 JD |
151 | if (!id) |
152 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); | |
f4067fd4 | 153 | |
4c05de9c HV |
154 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
155 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 156 | |
c02b211d | 157 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
251190cf | 158 | if (state == NULL) |
825c6aa2 | 159 | return -ENOMEM; |
251190cf | 160 | sd = &state->sd; |
825c6aa2 HV |
161 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); |
162 | ||
f4067fd4 | 163 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 164 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 165 | |
825c6aa2 | 166 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
167 | } |
168 | ||
251190cf HV |
169 | v4l2_ctrl_handler_init(&state->hdl, 2); |
170 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
171 | V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0); | |
172 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
173 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
174 | sd->ctrl_handler = &state->hdl; | |
175 | if (state->hdl.error) { | |
176 | int err = state->hdl.error; | |
177 | ||
178 | v4l2_ctrl_handler_free(&state->hdl); | |
251190cf HV |
179 | return err; |
180 | } | |
181 | ||
f4067fd4 HV |
182 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
183 | ||
251190cf HV |
184 | cs53l32a_write(sd, 0x01, 0x21); |
185 | cs53l32a_write(sd, 0x02, 0x29); | |
186 | cs53l32a_write(sd, 0x03, 0x30); | |
187 | cs53l32a_write(sd, 0x04, 0x00); | |
188 | cs53l32a_write(sd, 0x05, 0x00); | |
189 | cs53l32a_write(sd, 0x06, 0x00); | |
190 | cs53l32a_write(sd, 0x07, 0x00); | |
f4067fd4 HV |
191 | |
192 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
193 | ||
194 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 195 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 196 | |
825c6aa2 | 197 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 198 | } |
f4067fd4 HV |
199 | return 0; |
200 | } | |
201 | ||
825c6aa2 HV |
202 | static int cs53l32a_remove(struct i2c_client *client) |
203 | { | |
204 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
251190cf | 205 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 HV |
206 | |
207 | v4l2_device_unregister_subdev(sd); | |
251190cf | 208 | v4l2_ctrl_handler_free(&state->hdl); |
825c6aa2 HV |
209 | return 0; |
210 | } | |
211 | ||
af294867 JD |
212 | static const struct i2c_device_id cs53l32a_id[] = { |
213 | { "cs53l32a", 0 }, | |
214 | { } | |
215 | }; | |
216 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
217 | ||
50337ace HV |
218 | static struct i2c_driver cs53l32a_driver = { |
219 | .driver = { | |
50337ace HV |
220 | .name = "cs53l32a", |
221 | }, | |
222 | .probe = cs53l32a_probe, | |
223 | .remove = cs53l32a_remove, | |
224 | .id_table = cs53l32a_id, | |
f4067fd4 | 225 | }; |
50337ace | 226 | |
c6e8d86f | 227 | module_i2c_driver(cs53l32a_driver); |