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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. | |
16 | * | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/types.h> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
f4067fd4 HV |
26 | #include <linux/ioctl.h> |
27 | #include <asm/uaccess.h> | |
28 | #include <linux/i2c.h> | |
33b687cf | 29 | #include <linux/videodev2.h> |
825c6aa2 | 30 | #include <media/v4l2-device.h> |
251190cf | 31 | #include <media/v4l2-ctrls.h> |
f4067fd4 HV |
32 | |
33 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
34 | MODULE_AUTHOR("Martin Vaughan"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | ||
90ab5ee9 | 37 | static bool debug; |
f4067fd4 HV |
38 | |
39 | module_param(debug, bool, 0644); | |
40 | ||
61a2d07d | 41 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
f4067fd4 | 42 | |
f4067fd4 | 43 | |
251190cf HV |
44 | struct cs53l32a_state { |
45 | struct v4l2_subdev sd; | |
46 | struct v4l2_ctrl_handler hdl; | |
47 | }; | |
48 | ||
49 | static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd) | |
50 | { | |
51 | return container_of(sd, struct cs53l32a_state, sd); | |
52 | } | |
53 | ||
54 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
55 | { | |
56 | return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd; | |
57 | } | |
58 | ||
f4067fd4 HV |
59 | /* ----------------------------------------------------------------------- */ |
60 | ||
825c6aa2 | 61 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
f4067fd4 | 62 | { |
825c6aa2 HV |
63 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
64 | ||
f4067fd4 HV |
65 | return i2c_smbus_write_byte_data(client, reg, value); |
66 | } | |
67 | ||
825c6aa2 | 68 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
f4067fd4 | 69 | { |
825c6aa2 HV |
70 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
71 | ||
f4067fd4 HV |
72 | return i2c_smbus_read_byte_data(client, reg); |
73 | } | |
74 | ||
5325b427 HV |
75 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, |
76 | u32 input, u32 output, u32 config) | |
f4067fd4 | 77 | { |
825c6aa2 HV |
78 | /* There are 2 physical inputs, but the second input can be |
79 | placed in two modes, the first mode bypasses the PGA (gain), | |
80 | the second goes through the PGA. Hence there are three | |
81 | possible inputs to choose from. */ | |
5325b427 HV |
82 | if (input > 2) { |
83 | v4l2_err(sd, "Invalid input %d.\n", input); | |
f4067fd4 HV |
84 | return -EINVAL; |
85 | } | |
5325b427 | 86 | cs53l32a_write(sd, 0x01, 0x01 + (input << 4)); |
825c6aa2 HV |
87 | return 0; |
88 | } | |
89 | ||
251190cf | 90 | static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl) |
825c6aa2 | 91 | { |
251190cf | 92 | struct v4l2_subdev *sd = to_sd(ctrl); |
825c6aa2 | 93 | |
251190cf HV |
94 | switch (ctrl->id) { |
95 | case V4L2_CID_AUDIO_MUTE: | |
96 | cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30); | |
97 | return 0; | |
98 | case V4L2_CID_AUDIO_VOLUME: | |
99 | cs53l32a_write(sd, 0x04, (u8)ctrl->val); | |
100 | cs53l32a_write(sd, 0x05, (u8)ctrl->val); | |
825c6aa2 HV |
101 | return 0; |
102 | } | |
251190cf | 103 | return -EINVAL; |
f4067fd4 HV |
104 | } |
105 | ||
825c6aa2 HV |
106 | static int cs53l32a_log_status(struct v4l2_subdev *sd) |
107 | { | |
251190cf | 108 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 | 109 | u8 v = cs53l32a_read(sd, 0x01); |
825c6aa2 | 110 | |
251190cf HV |
111 | v4l2_info(sd, "Input: %d\n", (v >> 4) & 3); |
112 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); | |
825c6aa2 HV |
113 | return 0; |
114 | } | |
115 | ||
825c6aa2 HV |
116 | /* ----------------------------------------------------------------------- */ |
117 | ||
251190cf HV |
118 | static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = { |
119 | .s_ctrl = cs53l32a_s_ctrl, | |
120 | }; | |
121 | ||
825c6aa2 HV |
122 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { |
123 | .log_status = cs53l32a_log_status, | |
825c6aa2 HV |
124 | }; |
125 | ||
126 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
127 | .s_routing = cs53l32a_s_routing, | |
128 | }; | |
129 | ||
130 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
131 | .core = &cs53l32a_core_ops, | |
132 | .audio = &cs53l32a_audio_ops, | |
133 | }; | |
134 | ||
f4067fd4 HV |
135 | /* ----------------------------------------------------------------------- */ |
136 | ||
137 | /* i2c implementation */ | |
138 | ||
139 | /* | |
140 | * Generic i2c probe | |
141 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
142 | */ | |
143 | ||
d2653e92 JD |
144 | static int cs53l32a_probe(struct i2c_client *client, |
145 | const struct i2c_device_id *id) | |
f4067fd4 | 146 | { |
251190cf | 147 | struct cs53l32a_state *state; |
825c6aa2 | 148 | struct v4l2_subdev *sd; |
f4067fd4 HV |
149 | int i; |
150 | ||
151 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 152 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 153 | return -EIO; |
f4067fd4 | 154 | |
af294867 JD |
155 | if (!id) |
156 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); | |
f4067fd4 | 157 | |
4c05de9c HV |
158 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
159 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 160 | |
c02b211d | 161 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
251190cf | 162 | if (state == NULL) |
825c6aa2 | 163 | return -ENOMEM; |
251190cf | 164 | sd = &state->sd; |
825c6aa2 HV |
165 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); |
166 | ||
f4067fd4 | 167 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 168 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 169 | |
825c6aa2 | 170 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
171 | } |
172 | ||
251190cf HV |
173 | v4l2_ctrl_handler_init(&state->hdl, 2); |
174 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
175 | V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0); | |
176 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
177 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
178 | sd->ctrl_handler = &state->hdl; | |
179 | if (state->hdl.error) { | |
180 | int err = state->hdl.error; | |
181 | ||
182 | v4l2_ctrl_handler_free(&state->hdl); | |
251190cf HV |
183 | return err; |
184 | } | |
185 | ||
f4067fd4 HV |
186 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
187 | ||
251190cf HV |
188 | cs53l32a_write(sd, 0x01, 0x21); |
189 | cs53l32a_write(sd, 0x02, 0x29); | |
190 | cs53l32a_write(sd, 0x03, 0x30); | |
191 | cs53l32a_write(sd, 0x04, 0x00); | |
192 | cs53l32a_write(sd, 0x05, 0x00); | |
193 | cs53l32a_write(sd, 0x06, 0x00); | |
194 | cs53l32a_write(sd, 0x07, 0x00); | |
f4067fd4 HV |
195 | |
196 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
197 | ||
198 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 199 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 200 | |
825c6aa2 | 201 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 202 | } |
f4067fd4 HV |
203 | return 0; |
204 | } | |
205 | ||
825c6aa2 HV |
206 | static int cs53l32a_remove(struct i2c_client *client) |
207 | { | |
208 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
251190cf | 209 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 HV |
210 | |
211 | v4l2_device_unregister_subdev(sd); | |
251190cf | 212 | v4l2_ctrl_handler_free(&state->hdl); |
825c6aa2 HV |
213 | return 0; |
214 | } | |
215 | ||
af294867 JD |
216 | static const struct i2c_device_id cs53l32a_id[] = { |
217 | { "cs53l32a", 0 }, | |
218 | { } | |
219 | }; | |
220 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
221 | ||
50337ace HV |
222 | static struct i2c_driver cs53l32a_driver = { |
223 | .driver = { | |
50337ace HV |
224 | .name = "cs53l32a", |
225 | }, | |
226 | .probe = cs53l32a_probe, | |
227 | .remove = cs53l32a_remove, | |
228 | .id_table = cs53l32a_id, | |
f4067fd4 | 229 | }; |
50337ace | 230 | |
c6e8d86f | 231 | module_i2c_driver(cs53l32a_driver); |