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 | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 29 | #include <linux/videodev.h> |
Hans Verkuil | fac9e89 | 2006-01-09 15:32:40 -0200 | [diff] [blame] | 30 | #include <media/v4l2-common.h> |
Hans Verkuil | 74cab31 | 2007-04-27 12:31:26 -0300 | [diff] [blame] | 31 | #include <media/v4l2-chip-ident.h> |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 32 | #include <media/v4l2-i2c-drv-legacy.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 | |
| 38 | static int debug = 0; |
| 39 | |
| 40 | module_param(debug, bool, 0644); |
| 41 | |
| 42 | MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On"); |
| 43 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 44 | static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END }; |
| 45 | |
| 46 | |
| 47 | I2C_CLIENT_INSMOD; |
| 48 | |
| 49 | /* ----------------------------------------------------------------------- */ |
| 50 | |
| 51 | static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value) |
| 52 | { |
| 53 | return i2c_smbus_write_byte_data(client, reg, value); |
| 54 | } |
| 55 | |
| 56 | static int cs53l32a_read(struct i2c_client *client, u8 reg) |
| 57 | { |
| 58 | return i2c_smbus_read_byte_data(client, reg); |
| 59 | } |
| 60 | |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 61 | static int cs53l32a_command(struct i2c_client *client, unsigned int cmd, void *arg) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 62 | { |
Hans Verkuil | 7fa033b | 2006-03-23 20:12:26 -0300 | [diff] [blame] | 63 | struct v4l2_routing *route = arg; |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 64 | struct v4l2_control *ctrl = arg; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 65 | |
| 66 | switch (cmd) { |
Hans Verkuil | 7fa033b | 2006-03-23 20:12:26 -0300 | [diff] [blame] | 67 | case VIDIOC_INT_G_AUDIO_ROUTING: |
| 68 | route->input = (cs53l32a_read(client, 0x01) >> 4) & 3; |
| 69 | route->output = 0; |
| 70 | break; |
| 71 | |
| 72 | case VIDIOC_INT_S_AUDIO_ROUTING: |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 73 | /* There are 2 physical inputs, but the second input can be |
| 74 | placed in two modes, the first mode bypasses the PGA (gain), |
| 75 | the second goes through the PGA. Hence there are three |
| 76 | possible inputs to choose from. */ |
Hans Verkuil | 7fa033b | 2006-03-23 20:12:26 -0300 | [diff] [blame] | 77 | if (route->input > 2) { |
| 78 | v4l_err(client, "Invalid input %d.\n", route->input); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 79 | return -EINVAL; |
| 80 | } |
Hans Verkuil | 7fa033b | 2006-03-23 20:12:26 -0300 | [diff] [blame] | 81 | cs53l32a_write(client, 0x01, 0x01 + (route->input << 4)); |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 82 | break; |
| 83 | |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 84 | case VIDIOC_G_CTRL: |
| 85 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 86 | ctrl->value = (cs53l32a_read(client, 0x03) & 0xc0) != 0; |
| 87 | break; |
| 88 | } |
| 89 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 90 | return -EINVAL; |
| 91 | ctrl->value = (s8)cs53l32a_read(client, 0x04); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 92 | break; |
| 93 | |
| 94 | case VIDIOC_S_CTRL: |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 95 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 96 | cs53l32a_write(client, 0x03, ctrl->value ? 0xf0 : 0x30); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 97 | break; |
| 98 | } |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 99 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 100 | return -EINVAL; |
| 101 | if (ctrl->value > 12 || ctrl->value < -96) |
| 102 | return -EINVAL; |
| 103 | cs53l32a_write(client, 0x04, (u8) ctrl->value); |
| 104 | cs53l32a_write(client, 0x05, (u8) ctrl->value); |
| 105 | break; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 106 | |
Hans Verkuil | 74cab31 | 2007-04-27 12:31:26 -0300 | [diff] [blame] | 107 | case VIDIOC_G_CHIP_IDENT: |
| 108 | return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_CS53l32A, 0); |
| 109 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 110 | case VIDIOC_LOG_STATUS: |
| 111 | { |
| 112 | u8 v = cs53l32a_read(client, 0x01); |
| 113 | u8 m = cs53l32a_read(client, 0x03); |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame] | 114 | s8 vol = cs53l32a_read(client, 0x04); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 115 | |
Hans Verkuil | fac9e89 | 2006-01-09 15:32:40 -0200 | [diff] [blame] | 116 | v4l_info(client, "Input: %d%s\n", (v >> 4) & 3, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 117 | (m & 0xC0) ? " (muted)" : ""); |
Hans Verkuil | fac9e89 | 2006-01-09 15:32:40 -0200 | [diff] [blame] | 118 | v4l_info(client, "Volume: %d dB\n", vol); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 119 | break; |
| 120 | } |
| 121 | |
| 122 | default: |
| 123 | return -EINVAL; |
| 124 | } |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | /* ----------------------------------------------------------------------- */ |
| 129 | |
| 130 | /* i2c implementation */ |
| 131 | |
| 132 | /* |
| 133 | * Generic i2c probe |
| 134 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 135 | */ |
| 136 | |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 137 | static int cs53l32a_probe(struct i2c_client *client) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 138 | { |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 139 | int i; |
| 140 | |
| 141 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 142 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 143 | return 0; |
| 144 | |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 145 | snprintf(client->name, sizeof(client->name) - 1, "cs53l32a"); |
| 146 | |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 147 | v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 148 | |
| 149 | for (i = 1; i <= 7; i++) { |
| 150 | u8 v = cs53l32a_read(client, i); |
| 151 | |
Mauro Carvalho Chehab | f167cb4e | 2006-01-11 19:41:49 -0200 | [diff] [blame] | 152 | v4l_dbg(1, debug, client, "Read Reg %d %02x\n", i, v); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
| 156 | |
| 157 | cs53l32a_write(client, 0x01, (u8) 0x21); |
| 158 | cs53l32a_write(client, 0x02, (u8) 0x29); |
| 159 | cs53l32a_write(client, 0x03, (u8) 0x30); |
| 160 | cs53l32a_write(client, 0x04, (u8) 0x00); |
| 161 | cs53l32a_write(client, 0x05, (u8) 0x00); |
| 162 | cs53l32a_write(client, 0x06, (u8) 0x00); |
| 163 | cs53l32a_write(client, 0x07, (u8) 0x00); |
| 164 | |
| 165 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ |
| 166 | |
| 167 | for (i = 1; i <= 7; i++) { |
| 168 | u8 v = cs53l32a_read(client, i); |
| 169 | |
Mauro Carvalho Chehab | f167cb4e | 2006-01-11 19:41:49 -0200 | [diff] [blame] | 170 | v4l_dbg(1, debug, client, "Read Reg %d %02x\n", i, v); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 171 | } |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 172 | return 0; |
| 173 | } |
| 174 | |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 175 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
| 176 | .name = "cs53l32a", |
| 177 | .driverid = I2C_DRIVERID_CS53L32A, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 178 | .command = cs53l32a_command, |
Hans Verkuil | e8e6b99 | 2007-09-13 11:30:38 -0300 | [diff] [blame^] | 179 | .probe = cs53l32a_probe, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 180 | }; |
| 181 | |