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6fb377f8 HV |
1 | /* |
2 | * cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC | |
3 | * Copyright (C) 2007 Hans Verkuil | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | ||
6fb377f8 HV |
21 | #include <linux/module.h> |
22 | #include <linux/kernel.h> | |
23 | #include <linux/i2c.h> | |
24 | #include <linux/videodev2.h> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
b3ee7e21 | 26 | #include <media/v4l2-device.h> |
34a078da | 27 | #include <media/v4l2-ctrls.h> |
6fb377f8 HV |
28 | |
29 | MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC"); | |
30 | MODULE_AUTHOR("Hans Verkuil"); | |
31 | MODULE_LICENSE("GPL"); | |
32 | ||
90ab5ee9 | 33 | static bool debug; |
6fb377f8 HV |
34 | |
35 | module_param(debug, bool, 0644); | |
36 | ||
61a2d07d | 37 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
6fb377f8 | 38 | |
34a078da HV |
39 | struct cs5345_state { |
40 | struct v4l2_subdev sd; | |
41 | struct v4l2_ctrl_handler hdl; | |
42 | }; | |
43 | ||
44 | static inline struct cs5345_state *to_state(struct v4l2_subdev *sd) | |
45 | { | |
46 | return container_of(sd, struct cs5345_state, sd); | |
47 | } | |
48 | ||
49 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
50 | { | |
51 | return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd; | |
52 | } | |
6fb377f8 HV |
53 | |
54 | /* ----------------------------------------------------------------------- */ | |
55 | ||
b3ee7e21 | 56 | static inline int cs5345_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
6fb377f8 | 57 | { |
b3ee7e21 HV |
58 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
59 | ||
6fb377f8 HV |
60 | return i2c_smbus_write_byte_data(client, reg, value); |
61 | } | |
62 | ||
b3ee7e21 | 63 | static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg) |
6fb377f8 | 64 | { |
b3ee7e21 HV |
65 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
66 | ||
6fb377f8 HV |
67 | return i2c_smbus_read_byte_data(client, reg); |
68 | } | |
69 | ||
5325b427 HV |
70 | static int cs5345_s_routing(struct v4l2_subdev *sd, |
71 | u32 input, u32 output, u32 config) | |
6fb377f8 | 72 | { |
5325b427 HV |
73 | if ((input & 0xf) > 6) { |
74 | v4l2_err(sd, "Invalid input %d.\n", input); | |
b3ee7e21 | 75 | return -EINVAL; |
6fb377f8 | 76 | } |
5325b427 HV |
77 | cs5345_write(sd, 0x09, input & 0xf); |
78 | cs5345_write(sd, 0x05, input & 0xf0); | |
b3ee7e21 HV |
79 | return 0; |
80 | } | |
6fb377f8 | 81 | |
34a078da | 82 | static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl) |
b3ee7e21 | 83 | { |
34a078da | 84 | struct v4l2_subdev *sd = to_sd(ctrl); |
b3ee7e21 | 85 | |
34a078da HV |
86 | switch (ctrl->id) { |
87 | case V4L2_CID_AUDIO_MUTE: | |
88 | cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0); | |
89 | return 0; | |
90 | case V4L2_CID_AUDIO_VOLUME: | |
91 | cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f); | |
92 | cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f); | |
b3ee7e21 | 93 | return 0; |
6fb377f8 | 94 | } |
34a078da | 95 | return -EINVAL; |
b3ee7e21 HV |
96 | } |
97 | ||
98 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
aecde8b5 | 99 | static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
b3ee7e21 | 100 | { |
aecde8b5 | 101 | reg->size = 1; |
b3ee7e21 HV |
102 | reg->val = cs5345_read(sd, reg->reg & 0x1f); |
103 | return 0; | |
104 | } | |
105 | ||
977ba3b1 | 106 | static int cs5345_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) |
b3ee7e21 | 107 | { |
b3ee7e21 | 108 | cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff); |
6fb377f8 HV |
109 | return 0; |
110 | } | |
b3ee7e21 HV |
111 | #endif |
112 | ||
b3ee7e21 HV |
113 | static int cs5345_log_status(struct v4l2_subdev *sd) |
114 | { | |
115 | u8 v = cs5345_read(sd, 0x09) & 7; | |
116 | u8 m = cs5345_read(sd, 0x04); | |
117 | int vol = cs5345_read(sd, 0x08) & 0x3f; | |
118 | ||
119 | v4l2_info(sd, "Input: %d%s\n", v, | |
120 | (m & 0x80) ? " (muted)" : ""); | |
121 | if (vol >= 32) | |
122 | vol = vol - 64; | |
123 | v4l2_info(sd, "Volume: %d dB\n", vol); | |
124 | return 0; | |
125 | } | |
126 | ||
b3ee7e21 HV |
127 | /* ----------------------------------------------------------------------- */ |
128 | ||
34a078da HV |
129 | static const struct v4l2_ctrl_ops cs5345_ctrl_ops = { |
130 | .s_ctrl = cs5345_s_ctrl, | |
131 | }; | |
132 | ||
b3ee7e21 HV |
133 | static const struct v4l2_subdev_core_ops cs5345_core_ops = { |
134 | .log_status = cs5345_log_status, | |
34a078da HV |
135 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, |
136 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, | |
137 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, | |
138 | .g_ctrl = v4l2_subdev_g_ctrl, | |
139 | .s_ctrl = v4l2_subdev_s_ctrl, | |
140 | .queryctrl = v4l2_subdev_queryctrl, | |
141 | .querymenu = v4l2_subdev_querymenu, | |
b3ee7e21 HV |
142 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
143 | .g_register = cs5345_g_register, | |
144 | .s_register = cs5345_s_register, | |
145 | #endif | |
146 | }; | |
147 | ||
148 | static const struct v4l2_subdev_audio_ops cs5345_audio_ops = { | |
149 | .s_routing = cs5345_s_routing, | |
150 | }; | |
151 | ||
152 | static const struct v4l2_subdev_ops cs5345_ops = { | |
153 | .core = &cs5345_core_ops, | |
154 | .audio = &cs5345_audio_ops, | |
155 | }; | |
6fb377f8 HV |
156 | |
157 | /* ----------------------------------------------------------------------- */ | |
158 | ||
d2653e92 JD |
159 | static int cs5345_probe(struct i2c_client *client, |
160 | const struct i2c_device_id *id) | |
6fb377f8 | 161 | { |
34a078da | 162 | struct cs5345_state *state; |
b3ee7e21 HV |
163 | struct v4l2_subdev *sd; |
164 | ||
6fb377f8 HV |
165 | /* Check if the adapter supports the needed features */ |
166 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
167 | return -EIO; | |
168 | ||
169 | v4l_info(client, "chip found @ 0x%x (%s)\n", | |
170 | client->addr << 1, client->adapter->name); | |
171 | ||
c02b211d | 172 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
34a078da | 173 | if (state == NULL) |
b3ee7e21 | 174 | return -ENOMEM; |
34a078da | 175 | sd = &state->sd; |
b3ee7e21 HV |
176 | v4l2_i2c_subdev_init(sd, client, &cs5345_ops); |
177 | ||
34a078da HV |
178 | v4l2_ctrl_handler_init(&state->hdl, 2); |
179 | v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, | |
180 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
181 | v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, | |
182 | V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0); | |
183 | sd->ctrl_handler = &state->hdl; | |
184 | if (state->hdl.error) { | |
185 | int err = state->hdl.error; | |
186 | ||
187 | v4l2_ctrl_handler_free(&state->hdl); | |
34a078da HV |
188 | return err; |
189 | } | |
190 | /* set volume/mute */ | |
191 | v4l2_ctrl_handler_setup(&state->hdl); | |
192 | ||
b3ee7e21 HV |
193 | cs5345_write(sd, 0x02, 0x00); |
194 | cs5345_write(sd, 0x04, 0x01); | |
195 | cs5345_write(sd, 0x09, 0x01); | |
196 | return 0; | |
197 | } | |
198 | ||
199 | /* ----------------------------------------------------------------------- */ | |
200 | ||
201 | static int cs5345_remove(struct i2c_client *client) | |
202 | { | |
203 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
34a078da | 204 | struct cs5345_state *state = to_state(sd); |
b3ee7e21 HV |
205 | |
206 | v4l2_device_unregister_subdev(sd); | |
34a078da | 207 | v4l2_ctrl_handler_free(&state->hdl); |
6fb377f8 HV |
208 | return 0; |
209 | } | |
210 | ||
211 | /* ----------------------------------------------------------------------- */ | |
212 | ||
af294867 JD |
213 | static const struct i2c_device_id cs5345_id[] = { |
214 | { "cs5345", 0 }, | |
215 | { } | |
216 | }; | |
217 | MODULE_DEVICE_TABLE(i2c, cs5345_id); | |
218 | ||
51e86846 HV |
219 | static struct i2c_driver cs5345_driver = { |
220 | .driver = { | |
221 | .owner = THIS_MODULE, | |
222 | .name = "cs5345", | |
223 | }, | |
224 | .probe = cs5345_probe, | |
225 | .remove = cs5345_remove, | |
226 | .id_table = cs5345_id, | |
6fb377f8 | 227 | }; |
51e86846 | 228 | |
c6e8d86f | 229 | module_i2c_driver(cs5345_driver); |