Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 1 | /* |
| 2 | * tlv320aic23b - driver version 0.0.1 |
| 3 | * |
| 4 | * Copyright (C) 2006 Scott Alfter <salfter@ssai.us> |
| 5 | * |
| 6 | * Based on wm8775 driver |
| 7 | * |
| 8 | * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to> |
| 9 | * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 29 | #include <linux/ioctl.h> |
| 30 | #include <asm/uaccess.h> |
| 31 | #include <linux/i2c.h> |
Hans Verkuil | 33b687c | 2008-07-25 05:32:50 -0300 | [diff] [blame] | 32 | #include <linux/videodev2.h> |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 33 | #include <media/v4l2-device.h> |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 34 | |
| 35 | MODULE_DESCRIPTION("tlv320aic23b driver"); |
| 36 | MODULE_AUTHOR("Scott Alfter, Ulf Eklund, Hans Verkuil"); |
| 37 | MODULE_LICENSE("GPL"); |
| 38 | |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 39 | |
| 40 | /* ----------------------------------------------------------------------- */ |
| 41 | |
| 42 | struct tlv320aic23b_state { |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 43 | struct v4l2_subdev sd; |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 44 | u8 muted; |
| 45 | }; |
| 46 | |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 47 | static inline struct tlv320aic23b_state *to_state(struct v4l2_subdev *sd) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 48 | { |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 49 | return container_of(sd, struct tlv320aic23b_state, sd); |
| 50 | } |
| 51 | |
| 52 | static int tlv320aic23b_write(struct v4l2_subdev *sd, int reg, u16 val) |
| 53 | { |
| 54 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 55 | int i; |
| 56 | |
| 57 | if ((reg < 0 || reg > 9) && (reg != 15)) { |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 58 | v4l2_err(sd, "Invalid register R%d\n", reg); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 59 | return -1; |
| 60 | } |
| 61 | |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 62 | for (i = 0; i < 3; i++) |
| 63 | if (i2c_smbus_write_byte_data(client, |
| 64 | (reg << 1) | (val >> 8), val & 0xff) == 0) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 65 | return 0; |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 66 | v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 67 | return -1; |
| 68 | } |
| 69 | |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 70 | static int tlv320aic23b_s_clock_freq(struct v4l2_subdev *sd, u32 freq) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 71 | { |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 72 | switch (freq) { |
| 73 | case 32000: /* set sample rate to 32 kHz */ |
| 74 | tlv320aic23b_write(sd, 8, 0x018); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 75 | break; |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 76 | case 44100: /* set sample rate to 44.1 kHz */ |
| 77 | tlv320aic23b_write(sd, 8, 0x022); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 78 | break; |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 79 | case 48000: /* set sample rate to 48 kHz */ |
| 80 | tlv320aic23b_write(sd, 8, 0x000); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 81 | break; |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 82 | default: |
| 83 | return -EINVAL; |
| 84 | } |
| 85 | return 0; |
| 86 | } |
| 87 | |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 88 | static int tlv320aic23b_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 89 | { |
| 90 | struct tlv320aic23b_state *state = to_state(sd); |
| 91 | |
| 92 | if (ctrl->id != V4L2_CID_AUDIO_MUTE) |
| 93 | return -EINVAL; |
| 94 | ctrl->value = state->muted; |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | static int tlv320aic23b_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 99 | { |
| 100 | struct tlv320aic23b_state *state = to_state(sd); |
| 101 | |
| 102 | if (ctrl->id != V4L2_CID_AUDIO_MUTE) |
| 103 | return -EINVAL; |
| 104 | state->muted = ctrl->value; |
| 105 | tlv320aic23b_write(sd, 0, 0x180); /* mute both channels */ |
| 106 | /* set gain on both channels to +3.0 dB */ |
| 107 | if (!state->muted) |
| 108 | tlv320aic23b_write(sd, 0, 0x119); |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static int tlv320aic23b_log_status(struct v4l2_subdev *sd) |
| 113 | { |
| 114 | struct tlv320aic23b_state *state = to_state(sd); |
| 115 | |
| 116 | v4l2_info(sd, "Input: %s\n", state->muted ? "muted" : "active"); |
| 117 | return 0; |
| 118 | } |
| 119 | |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 120 | /* ----------------------------------------------------------------------- */ |
| 121 | |
| 122 | static const struct v4l2_subdev_core_ops tlv320aic23b_core_ops = { |
| 123 | .log_status = tlv320aic23b_log_status, |
| 124 | .g_ctrl = tlv320aic23b_g_ctrl, |
| 125 | .s_ctrl = tlv320aic23b_s_ctrl, |
| 126 | }; |
| 127 | |
| 128 | static const struct v4l2_subdev_audio_ops tlv320aic23b_audio_ops = { |
| 129 | .s_clock_freq = tlv320aic23b_s_clock_freq, |
| 130 | }; |
| 131 | |
| 132 | static const struct v4l2_subdev_ops tlv320aic23b_ops = { |
| 133 | .core = &tlv320aic23b_core_ops, |
| 134 | .audio = &tlv320aic23b_audio_ops, |
| 135 | }; |
| 136 | |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 137 | /* ----------------------------------------------------------------------- */ |
| 138 | |
| 139 | /* i2c implementation */ |
| 140 | |
| 141 | /* |
| 142 | * Generic i2c probe |
| 143 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 144 | */ |
| 145 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 146 | static int tlv320aic23b_probe(struct i2c_client *client, |
| 147 | const struct i2c_device_id *id) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 148 | { |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 149 | struct tlv320aic23b_state *state; |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 150 | struct v4l2_subdev *sd; |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 151 | |
| 152 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | 6235168 | 2007-09-14 05:03:17 -0300 | [diff] [blame] | 153 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
Hans Verkuil | 188f345 | 2007-09-16 10:47:15 -0300 | [diff] [blame] | 154 | return -EIO; |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 155 | |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 156 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 157 | client->addr << 1, client->adapter->name); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 158 | |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 159 | state = kzalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 160 | if (state == NULL) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 161 | return -ENOMEM; |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 162 | sd = &state->sd; |
| 163 | v4l2_i2c_subdev_init(sd, client, &tlv320aic23b_ops); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 164 | state->muted = 0; |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 165 | |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 166 | /* Initialize tlv320aic23b */ |
| 167 | |
| 168 | /* RESET */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 169 | tlv320aic23b_write(sd, 15, 0x000); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 170 | /* turn off DAC & mic input */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 171 | tlv320aic23b_write(sd, 6, 0x00A); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 172 | /* left-justified, 24-bit, master mode */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 173 | tlv320aic23b_write(sd, 7, 0x049); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 174 | /* set gain on both channels to +3.0 dB */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 175 | tlv320aic23b_write(sd, 0, 0x119); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 176 | /* set sample rate to 48 kHz */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 177 | tlv320aic23b_write(sd, 8, 0x000); |
Hans Verkuil | 574dec6 | 2007-11-01 07:58:17 -0300 | [diff] [blame] | 178 | /* activate digital interface */ |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 179 | tlv320aic23b_write(sd, 9, 0x001); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 180 | return 0; |
| 181 | } |
| 182 | |
Hans Verkuil | 6235168 | 2007-09-14 05:03:17 -0300 | [diff] [blame] | 183 | static int tlv320aic23b_remove(struct i2c_client *client) |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 184 | { |
Hans Verkuil | 6869ffe | 2008-12-18 12:43:56 -0300 | [diff] [blame] | 185 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 186 | |
| 187 | v4l2_device_unregister_subdev(sd); |
| 188 | kfree(to_state(sd)); |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | /* ----------------------------------------------------------------------- */ |
| 193 | |
Jean Delvare | ae42908 | 2008-05-11 20:37:06 +0200 | [diff] [blame] | 194 | static const struct i2c_device_id tlv320aic23b_id[] = { |
| 195 | { "tlv320aic23b", 0 }, |
| 196 | { } |
| 197 | }; |
| 198 | MODULE_DEVICE_TABLE(i2c, tlv320aic23b_id); |
Hans Verkuil | 6235168 | 2007-09-14 05:03:17 -0300 | [diff] [blame] | 199 | |
Hans Verkuil | 8e71ff0 | 2010-09-15 15:33:43 -0300 | [diff] [blame] | 200 | static struct i2c_driver tlv320aic23b_driver = { |
| 201 | .driver = { |
| 202 | .owner = THIS_MODULE, |
| 203 | .name = "tlv320aic23b", |
| 204 | }, |
| 205 | .probe = tlv320aic23b_probe, |
| 206 | .remove = tlv320aic23b_remove, |
| 207 | .id_table = tlv320aic23b_id, |
Scott Alfter | 88ca8ed | 2006-05-20 16:04:31 -0300 | [diff] [blame] | 208 | }; |
Hans Verkuil | 8e71ff0 | 2010-09-15 15:33:43 -0300 | [diff] [blame] | 209 | |
| 210 | static __init int init_tlv320aic23b(void) |
| 211 | { |
| 212 | return i2c_add_driver(&tlv320aic23b_driver); |
| 213 | } |
| 214 | |
| 215 | static __exit void exit_tlv320aic23b(void) |
| 216 | { |
| 217 | i2c_del_driver(&tlv320aic23b_driver); |
| 218 | } |
| 219 | |
| 220 | module_init(init_tlv320aic23b); |
| 221 | module_exit(exit_tlv320aic23b); |