Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 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> |
| 25 | #include <linux/ioctl.h> |
| 26 | #include <asm/uaccess.h> |
| 27 | #include <linux/i2c.h> |
Hans Verkuil | e2998e1 | 2005-11-08 21:38:49 -0800 | [diff] [blame] | 28 | #include <linux/i2c-id.h> |
Hans Verkuil | 33b687c | 2008-07-25 05:32:50 -0300 | [diff] [blame] | 29 | #include <linux/videodev2.h> |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 30 | #include <media/v4l2-device.h> |
Hans Verkuil | 74cab31 | 2007-04-27 12:31:26 -0300 | [diff] [blame] | 31 | #include <media/v4l2-chip-ident.h> |
Hans Verkuil | 5fed935 | 2009-03-28 09:32:42 -0300 | [diff] [blame^] | 32 | #include <media/v4l2-i2c-drv.h> |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 33 | |
| 34 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); |
| 35 | MODULE_AUTHOR("Martin Vaughan"); |
| 36 | MODULE_LICENSE("GPL"); |
| 37 | |
Hans Verkuil | 4c05de9 | 2007-11-01 07:54:57 -0300 | [diff] [blame] | 38 | static int debug; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 39 | |
| 40 | module_param(debug, bool, 0644); |
| 41 | |
Niels de Vos | 61a2d07 | 2008-07-31 00:07:23 -0700 | [diff] [blame] | 42 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 43 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 44 | |
| 45 | /* ----------------------------------------------------------------------- */ |
| 46 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 47 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 48 | { |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 49 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 50 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 51 | return i2c_smbus_write_byte_data(client, reg, value); |
| 52 | } |
| 53 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 54 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 55 | { |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 56 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 57 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 58 | return i2c_smbus_read_byte_data(client, reg); |
| 59 | } |
| 60 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 61 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route) |
| 62 | { |
| 63 | /* There are 2 physical inputs, but the second input can be |
| 64 | placed in two modes, the first mode bypasses the PGA (gain), |
| 65 | the second goes through the PGA. Hence there are three |
| 66 | possible inputs to choose from. */ |
| 67 | if (route->input > 2) { |
| 68 | v4l2_err(sd, "Invalid input %d.\n", route->input); |
| 69 | return -EINVAL; |
| 70 | } |
| 71 | cs53l32a_write(sd, 0x01, 0x01 + (route->input << 4)); |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | static int cs53l32a_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 76 | { |
| 77 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 78 | ctrl->value = (cs53l32a_read(sd, 0x03) & 0xc0) != 0; |
| 79 | return 0; |
| 80 | } |
| 81 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 82 | return -EINVAL; |
| 83 | ctrl->value = (s8)cs53l32a_read(sd, 0x04); |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 88 | { |
| 89 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 90 | cs53l32a_write(sd, 0x03, ctrl->value ? 0xf0 : 0x30); |
| 91 | return 0; |
| 92 | } |
| 93 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 94 | return -EINVAL; |
| 95 | if (ctrl->value > 12 || ctrl->value < -96) |
| 96 | return -EINVAL; |
| 97 | cs53l32a_write(sd, 0x04, (u8) ctrl->value); |
| 98 | cs53l32a_write(sd, 0x05, (u8) ctrl->value); |
| 99 | return 0; |
| 100 | } |
| 101 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 102 | static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 103 | { |
| 104 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 105 | |
| 106 | return v4l2_chip_ident_i2c_client(client, |
| 107 | chip, V4L2_IDENT_CS53l32A, 0); |
| 108 | } |
| 109 | |
| 110 | static int cs53l32a_log_status(struct v4l2_subdev *sd) |
| 111 | { |
| 112 | u8 v = cs53l32a_read(sd, 0x01); |
| 113 | u8 m = cs53l32a_read(sd, 0x03); |
| 114 | s8 vol = cs53l32a_read(sd, 0x04); |
| 115 | |
| 116 | v4l2_info(sd, "Input: %d%s\n", (v >> 4) & 3, |
| 117 | (m & 0xC0) ? " (muted)" : ""); |
| 118 | v4l2_info(sd, "Volume: %d dB\n", vol); |
| 119 | return 0; |
| 120 | } |
| 121 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 122 | /* ----------------------------------------------------------------------- */ |
| 123 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 124 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { |
| 125 | .log_status = cs53l32a_log_status, |
| 126 | .g_chip_ident = cs53l32a_g_chip_ident, |
| 127 | .g_ctrl = cs53l32a_g_ctrl, |
| 128 | .s_ctrl = cs53l32a_s_ctrl, |
| 129 | }; |
| 130 | |
| 131 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { |
| 132 | .s_routing = cs53l32a_s_routing, |
| 133 | }; |
| 134 | |
| 135 | static const struct v4l2_subdev_ops cs53l32a_ops = { |
| 136 | .core = &cs53l32a_core_ops, |
| 137 | .audio = &cs53l32a_audio_ops, |
| 138 | }; |
| 139 | |
| 140 | /* ----------------------------------------------------------------------- */ |
| 141 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 142 | /* i2c implementation */ |
| 143 | |
| 144 | /* |
| 145 | * Generic i2c probe |
| 146 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 147 | */ |
| 148 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 149 | static int cs53l32a_probe(struct i2c_client *client, |
| 150 | const struct i2c_device_id *id) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 151 | { |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 152 | struct v4l2_subdev *sd; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 153 | int i; |
| 154 | |
| 155 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame] | 156 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
Hans Verkuil | 188f345 | 2007-09-16 10:47:15 -0300 | [diff] [blame] | 157 | return -EIO; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 158 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 159 | if (!id) |
| 160 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 161 | |
Hans Verkuil | 4c05de9 | 2007-11-01 07:54:57 -0300 | [diff] [blame] | 162 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 163 | client->addr << 1, client->adapter->name); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 164 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 165 | sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); |
| 166 | if (sd == NULL) |
| 167 | return -ENOMEM; |
| 168 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 169 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 170 | for (i = 1; i <= 7; i++) { |
| 171 | u8 v = cs53l32a_read(sd, i); |
| 172 | |
| 173 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
| 177 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 178 | cs53l32a_write(sd, 0x01, (u8) 0x21); |
| 179 | cs53l32a_write(sd, 0x02, (u8) 0x29); |
| 180 | cs53l32a_write(sd, 0x03, (u8) 0x30); |
| 181 | cs53l32a_write(sd, 0x04, (u8) 0x00); |
| 182 | cs53l32a_write(sd, 0x05, (u8) 0x00); |
| 183 | cs53l32a_write(sd, 0x06, (u8) 0x00); |
| 184 | cs53l32a_write(sd, 0x07, (u8) 0x00); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 185 | |
| 186 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ |
| 187 | |
| 188 | for (i = 1; i <= 7; i++) { |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 189 | u8 v = cs53l32a_read(sd, i); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 190 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 191 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 192 | } |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 193 | return 0; |
| 194 | } |
| 195 | |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 196 | static int cs53l32a_remove(struct i2c_client *client) |
| 197 | { |
| 198 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 199 | |
| 200 | v4l2_device_unregister_subdev(sd); |
| 201 | kfree(sd); |
| 202 | return 0; |
| 203 | } |
| 204 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 205 | static const struct i2c_device_id cs53l32a_id[] = { |
| 206 | { "cs53l32a", 0 }, |
| 207 | { } |
| 208 | }; |
| 209 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); |
| 210 | |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame] | 211 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
| 212 | .name = "cs53l32a", |
Hans Verkuil | 825c6aa | 2008-11-29 12:45:59 -0300 | [diff] [blame] | 213 | .remove = cs53l32a_remove, |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame] | 214 | .probe = cs53l32a_probe, |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 215 | .id_table = cs53l32a_id, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 216 | }; |