Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 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 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/i2c.h> |
| 24 | #include <linux/videodev2.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 25 | #include <linux/slab.h> |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 26 | #include <media/v4l2-device.h> |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 27 | #include <media/v4l2-chip-ident.h> |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 28 | #include <media/v4l2-ctrls.h> |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 29 | |
| 30 | MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC"); |
| 31 | MODULE_AUTHOR("Hans Verkuil"); |
| 32 | MODULE_LICENSE("GPL"); |
| 33 | |
| 34 | static int debug; |
| 35 | |
| 36 | module_param(debug, bool, 0644); |
| 37 | |
Niels de Vos | 61a2d07 | 2008-07-31 00:07:23 -0700 | [diff] [blame] | 38 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 39 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 40 | struct cs5345_state { |
| 41 | struct v4l2_subdev sd; |
| 42 | struct v4l2_ctrl_handler hdl; |
| 43 | }; |
| 44 | |
| 45 | static inline struct cs5345_state *to_state(struct v4l2_subdev *sd) |
| 46 | { |
| 47 | return container_of(sd, struct cs5345_state, sd); |
| 48 | } |
| 49 | |
| 50 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) |
| 51 | { |
| 52 | return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd; |
| 53 | } |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 54 | |
| 55 | /* ----------------------------------------------------------------------- */ |
| 56 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 57 | static inline int cs5345_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 58 | { |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 59 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 60 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 61 | return i2c_smbus_write_byte_data(client, reg, value); |
| 62 | } |
| 63 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 64 | static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg) |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 65 | { |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 66 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 67 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 68 | return i2c_smbus_read_byte_data(client, reg); |
| 69 | } |
| 70 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 71 | static int cs5345_s_routing(struct v4l2_subdev *sd, |
| 72 | u32 input, u32 output, u32 config) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 73 | { |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 74 | if ((input & 0xf) > 6) { |
| 75 | v4l2_err(sd, "Invalid input %d.\n", input); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 76 | return -EINVAL; |
| 77 | } |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 78 | cs5345_write(sd, 0x09, input & 0xf); |
| 79 | cs5345_write(sd, 0x05, input & 0xf0); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 80 | return 0; |
| 81 | } |
| 82 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 83 | static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 84 | { |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 85 | struct v4l2_subdev *sd = to_sd(ctrl); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 86 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 87 | switch (ctrl->id) { |
| 88 | case V4L2_CID_AUDIO_MUTE: |
| 89 | cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0); |
| 90 | return 0; |
| 91 | case V4L2_CID_AUDIO_VOLUME: |
| 92 | cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f); |
| 93 | cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 94 | return 0; |
| 95 | } |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 96 | return -EINVAL; |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 100 | static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 101 | { |
| 102 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 103 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 104 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 105 | return -EINVAL; |
| 106 | if (!capable(CAP_SYS_ADMIN)) |
| 107 | return -EPERM; |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 108 | reg->size = 1; |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 109 | reg->val = cs5345_read(sd, reg->reg & 0x1f); |
| 110 | return 0; |
| 111 | } |
| 112 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 113 | static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 114 | { |
| 115 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 116 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 117 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 118 | return -EINVAL; |
| 119 | if (!capable(CAP_SYS_ADMIN)) |
| 120 | return -EPERM; |
| 121 | cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff); |
| 122 | return 0; |
| 123 | } |
| 124 | #endif |
| 125 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 126 | static int cs5345_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 127 | { |
| 128 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 129 | |
| 130 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_CS5345, 0); |
| 131 | } |
| 132 | |
| 133 | static int cs5345_log_status(struct v4l2_subdev *sd) |
| 134 | { |
| 135 | u8 v = cs5345_read(sd, 0x09) & 7; |
| 136 | u8 m = cs5345_read(sd, 0x04); |
| 137 | int vol = cs5345_read(sd, 0x08) & 0x3f; |
| 138 | |
| 139 | v4l2_info(sd, "Input: %d%s\n", v, |
| 140 | (m & 0x80) ? " (muted)" : ""); |
| 141 | if (vol >= 32) |
| 142 | vol = vol - 64; |
| 143 | v4l2_info(sd, "Volume: %d dB\n", vol); |
| 144 | return 0; |
| 145 | } |
| 146 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 147 | /* ----------------------------------------------------------------------- */ |
| 148 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 149 | static const struct v4l2_ctrl_ops cs5345_ctrl_ops = { |
| 150 | .s_ctrl = cs5345_s_ctrl, |
| 151 | }; |
| 152 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 153 | static const struct v4l2_subdev_core_ops cs5345_core_ops = { |
| 154 | .log_status = cs5345_log_status, |
| 155 | .g_chip_ident = cs5345_g_chip_ident, |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 156 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, |
| 157 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, |
| 158 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, |
| 159 | .g_ctrl = v4l2_subdev_g_ctrl, |
| 160 | .s_ctrl = v4l2_subdev_s_ctrl, |
| 161 | .queryctrl = v4l2_subdev_queryctrl, |
| 162 | .querymenu = v4l2_subdev_querymenu, |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 163 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 164 | .g_register = cs5345_g_register, |
| 165 | .s_register = cs5345_s_register, |
| 166 | #endif |
| 167 | }; |
| 168 | |
| 169 | static const struct v4l2_subdev_audio_ops cs5345_audio_ops = { |
| 170 | .s_routing = cs5345_s_routing, |
| 171 | }; |
| 172 | |
| 173 | static const struct v4l2_subdev_ops cs5345_ops = { |
| 174 | .core = &cs5345_core_ops, |
| 175 | .audio = &cs5345_audio_ops, |
| 176 | }; |
| 177 | |
| 178 | /* ----------------------------------------------------------------------- */ |
| 179 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 180 | static int cs5345_probe(struct i2c_client *client, |
| 181 | const struct i2c_device_id *id) |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 182 | { |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 183 | struct cs5345_state *state; |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 184 | struct v4l2_subdev *sd; |
| 185 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 186 | /* Check if the adapter supports the needed features */ |
| 187 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 188 | return -EIO; |
| 189 | |
| 190 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 191 | client->addr << 1, client->adapter->name); |
| 192 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 193 | state = kzalloc(sizeof(struct cs5345_state), GFP_KERNEL); |
| 194 | if (state == NULL) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 195 | return -ENOMEM; |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 196 | sd = &state->sd; |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 197 | v4l2_i2c_subdev_init(sd, client, &cs5345_ops); |
| 198 | |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 199 | v4l2_ctrl_handler_init(&state->hdl, 2); |
| 200 | v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, |
| 201 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); |
| 202 | v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops, |
| 203 | V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0); |
| 204 | sd->ctrl_handler = &state->hdl; |
| 205 | if (state->hdl.error) { |
| 206 | int err = state->hdl.error; |
| 207 | |
| 208 | v4l2_ctrl_handler_free(&state->hdl); |
| 209 | kfree(state); |
| 210 | return err; |
| 211 | } |
| 212 | /* set volume/mute */ |
| 213 | v4l2_ctrl_handler_setup(&state->hdl); |
| 214 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 215 | cs5345_write(sd, 0x02, 0x00); |
| 216 | cs5345_write(sd, 0x04, 0x01); |
| 217 | cs5345_write(sd, 0x09, 0x01); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | /* ----------------------------------------------------------------------- */ |
| 222 | |
| 223 | static int cs5345_remove(struct i2c_client *client) |
| 224 | { |
| 225 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 226 | struct cs5345_state *state = to_state(sd); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 227 | |
| 228 | v4l2_device_unregister_subdev(sd); |
Hans Verkuil | 34a078d | 2010-12-12 07:53:28 -0300 | [diff] [blame] | 229 | v4l2_ctrl_handler_free(&state->hdl); |
| 230 | kfree(state); |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | /* ----------------------------------------------------------------------- */ |
| 235 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 236 | static const struct i2c_device_id cs5345_id[] = { |
| 237 | { "cs5345", 0 }, |
| 238 | { } |
| 239 | }; |
| 240 | MODULE_DEVICE_TABLE(i2c, cs5345_id); |
| 241 | |
Hans Verkuil | 51e8684 | 2010-09-15 15:00:07 -0300 | [diff] [blame] | 242 | static struct i2c_driver cs5345_driver = { |
| 243 | .driver = { |
| 244 | .owner = THIS_MODULE, |
| 245 | .name = "cs5345", |
| 246 | }, |
| 247 | .probe = cs5345_probe, |
| 248 | .remove = cs5345_remove, |
| 249 | .id_table = cs5345_id, |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 250 | }; |
Hans Verkuil | 51e8684 | 2010-09-15 15:00:07 -0300 | [diff] [blame] | 251 | |
| 252 | static __init int init_cs5345(void) |
| 253 | { |
| 254 | return i2c_add_driver(&cs5345_driver); |
| 255 | } |
| 256 | |
| 257 | static __exit void exit_cs5345(void) |
| 258 | { |
| 259 | i2c_del_driver(&cs5345_driver); |
| 260 | } |
| 261 | |
| 262 | module_init(init_cs5345); |
| 263 | module_exit(exit_cs5345); |