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> |
| 28 | |
| 29 | MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC"); |
| 30 | MODULE_AUTHOR("Hans Verkuil"); |
| 31 | MODULE_LICENSE("GPL"); |
| 32 | |
| 33 | static int debug; |
| 34 | |
| 35 | module_param(debug, bool, 0644); |
| 36 | |
Niels de Vos | 61a2d07 | 2008-07-31 00:07:23 -0700 | [diff] [blame] | 37 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 38 | |
| 39 | |
| 40 | /* ----------------------------------------------------------------------- */ |
| 41 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 42 | 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] | 43 | { |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 44 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 45 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 46 | return i2c_smbus_write_byte_data(client, reg, value); |
| 47 | } |
| 48 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 49 | static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg) |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 50 | { |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 51 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 52 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 53 | return i2c_smbus_read_byte_data(client, reg); |
| 54 | } |
| 55 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 56 | static int cs5345_s_routing(struct v4l2_subdev *sd, |
| 57 | u32 input, u32 output, u32 config) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 58 | { |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 59 | if ((input & 0xf) > 6) { |
| 60 | v4l2_err(sd, "Invalid input %d.\n", input); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 61 | return -EINVAL; |
| 62 | } |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 63 | cs5345_write(sd, 0x09, input & 0xf); |
| 64 | cs5345_write(sd, 0x05, input & 0xf0); |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | static int cs5345_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 69 | { |
| 70 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 71 | ctrl->value = (cs5345_read(sd, 0x04) & 0x08) != 0; |
| 72 | return 0; |
| 73 | } |
| 74 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 75 | return -EINVAL; |
| 76 | ctrl->value = cs5345_read(sd, 0x07) & 0x3f; |
| 77 | if (ctrl->value >= 32) |
| 78 | ctrl->value = ctrl->value - 64; |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static int cs5345_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 83 | { |
| 84 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 85 | cs5345_write(sd, 0x04, ctrl->value ? 0x80 : 0); |
| 86 | return 0; |
| 87 | } |
| 88 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 89 | return -EINVAL; |
| 90 | if (ctrl->value > 24 || ctrl->value < -24) |
| 91 | return -EINVAL; |
| 92 | cs5345_write(sd, 0x07, ((u8)ctrl->value) & 0x3f); |
| 93 | cs5345_write(sd, 0x08, ((u8)ctrl->value) & 0x3f); |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 98 | 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] | 99 | { |
| 100 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 101 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 102 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 103 | return -EINVAL; |
| 104 | if (!capable(CAP_SYS_ADMIN)) |
| 105 | return -EPERM; |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 106 | reg->size = 1; |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 107 | reg->val = cs5345_read(sd, reg->reg & 0x1f); |
| 108 | return 0; |
| 109 | } |
| 110 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 111 | 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] | 112 | { |
| 113 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 114 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 115 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 116 | return -EINVAL; |
| 117 | if (!capable(CAP_SYS_ADMIN)) |
| 118 | return -EPERM; |
| 119 | cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff); |
| 120 | return 0; |
| 121 | } |
| 122 | #endif |
| 123 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 124 | 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] | 125 | { |
| 126 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 127 | |
| 128 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_CS5345, 0); |
| 129 | } |
| 130 | |
| 131 | static int cs5345_log_status(struct v4l2_subdev *sd) |
| 132 | { |
| 133 | u8 v = cs5345_read(sd, 0x09) & 7; |
| 134 | u8 m = cs5345_read(sd, 0x04); |
| 135 | int vol = cs5345_read(sd, 0x08) & 0x3f; |
| 136 | |
| 137 | v4l2_info(sd, "Input: %d%s\n", v, |
| 138 | (m & 0x80) ? " (muted)" : ""); |
| 139 | if (vol >= 32) |
| 140 | vol = vol - 64; |
| 141 | v4l2_info(sd, "Volume: %d dB\n", vol); |
| 142 | return 0; |
| 143 | } |
| 144 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 145 | /* ----------------------------------------------------------------------- */ |
| 146 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 147 | static const struct v4l2_subdev_core_ops cs5345_core_ops = { |
| 148 | .log_status = cs5345_log_status, |
| 149 | .g_chip_ident = cs5345_g_chip_ident, |
| 150 | .g_ctrl = cs5345_g_ctrl, |
| 151 | .s_ctrl = cs5345_s_ctrl, |
| 152 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 153 | .g_register = cs5345_g_register, |
| 154 | .s_register = cs5345_s_register, |
| 155 | #endif |
| 156 | }; |
| 157 | |
| 158 | static const struct v4l2_subdev_audio_ops cs5345_audio_ops = { |
| 159 | .s_routing = cs5345_s_routing, |
| 160 | }; |
| 161 | |
| 162 | static const struct v4l2_subdev_ops cs5345_ops = { |
| 163 | .core = &cs5345_core_ops, |
| 164 | .audio = &cs5345_audio_ops, |
| 165 | }; |
| 166 | |
| 167 | /* ----------------------------------------------------------------------- */ |
| 168 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 169 | static int cs5345_probe(struct i2c_client *client, |
| 170 | const struct i2c_device_id *id) |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 171 | { |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 172 | struct v4l2_subdev *sd; |
| 173 | |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 174 | /* Check if the adapter supports the needed features */ |
| 175 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 176 | return -EIO; |
| 177 | |
| 178 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 179 | client->addr << 1, client->adapter->name); |
| 180 | |
Hans Verkuil | b3ee7e2 | 2008-12-19 10:34:22 -0300 | [diff] [blame] | 181 | sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); |
| 182 | if (sd == NULL) |
| 183 | return -ENOMEM; |
| 184 | v4l2_i2c_subdev_init(sd, client, &cs5345_ops); |
| 185 | |
| 186 | cs5345_write(sd, 0x02, 0x00); |
| 187 | cs5345_write(sd, 0x04, 0x01); |
| 188 | cs5345_write(sd, 0x09, 0x01); |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | /* ----------------------------------------------------------------------- */ |
| 193 | |
| 194 | static int cs5345_remove(struct i2c_client *client) |
| 195 | { |
| 196 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 197 | |
| 198 | v4l2_device_unregister_subdev(sd); |
| 199 | kfree(sd); |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | /* ----------------------------------------------------------------------- */ |
| 204 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 205 | static const struct i2c_device_id cs5345_id[] = { |
| 206 | { "cs5345", 0 }, |
| 207 | { } |
| 208 | }; |
| 209 | MODULE_DEVICE_TABLE(i2c, cs5345_id); |
| 210 | |
Hans Verkuil | 51e8684 | 2010-09-15 15:00:07 -0300 | [diff] [blame] | 211 | static struct i2c_driver cs5345_driver = { |
| 212 | .driver = { |
| 213 | .owner = THIS_MODULE, |
| 214 | .name = "cs5345", |
| 215 | }, |
| 216 | .probe = cs5345_probe, |
| 217 | .remove = cs5345_remove, |
| 218 | .id_table = cs5345_id, |
Hans Verkuil | 6fb377f | 2007-12-18 19:40:44 -0300 | [diff] [blame] | 219 | }; |
Hans Verkuil | 51e8684 | 2010-09-15 15:00:07 -0300 | [diff] [blame] | 220 | |
| 221 | static __init int init_cs5345(void) |
| 222 | { |
| 223 | return i2c_add_driver(&cs5345_driver); |
| 224 | } |
| 225 | |
| 226 | static __exit void exit_cs5345(void) |
| 227 | { |
| 228 | i2c_del_driver(&cs5345_driver); |
| 229 | } |
| 230 | |
| 231 | module_init(init_cs5345); |
| 232 | module_exit(exit_cs5345); |