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> |
| 30 | #include <media/audiochip.h> |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 31 | |
| 32 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); |
| 33 | MODULE_AUTHOR("Martin Vaughan"); |
| 34 | MODULE_LICENSE("GPL"); |
| 35 | |
| 36 | static int debug = 0; |
| 37 | |
| 38 | module_param(debug, bool, 0644); |
| 39 | |
| 40 | MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On"); |
| 41 | |
| 42 | #define cs53l32a_dbg(fmt, arg...) \ |
| 43 | do { \ |
| 44 | if (debug) \ |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 45 | printk(KERN_INFO "%s debug %d-%04x: " fmt, \ |
| 46 | client->driver->driver.name, \ |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 47 | i2c_adapter_id(client->adapter), client->addr , ## arg); \ |
| 48 | } while (0) |
| 49 | |
| 50 | #define cs53l32a_err(fmt, arg...) do { \ |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 51 | printk(KERN_ERR "%s %d-%04x: " fmt, client->driver->driver.name, \ |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 52 | i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0) |
| 53 | #define cs53l32a_info(fmt, arg...) do { \ |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 54 | printk(KERN_INFO "%s %d-%04x: " fmt, client->driver->driver.name, \ |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 55 | i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0) |
| 56 | |
| 57 | static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END }; |
| 58 | |
| 59 | |
| 60 | I2C_CLIENT_INSMOD; |
| 61 | |
| 62 | /* ----------------------------------------------------------------------- */ |
| 63 | |
| 64 | static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value) |
| 65 | { |
| 66 | return i2c_smbus_write_byte_data(client, reg, value); |
| 67 | } |
| 68 | |
| 69 | static int cs53l32a_read(struct i2c_client *client, u8 reg) |
| 70 | { |
| 71 | return i2c_smbus_read_byte_data(client, reg); |
| 72 | } |
| 73 | |
| 74 | static int cs53l32a_command(struct i2c_client *client, unsigned int cmd, |
| 75 | void *arg) |
| 76 | { |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 77 | struct v4l2_audio *input = arg; |
| 78 | struct v4l2_control *ctrl = arg; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 79 | |
| 80 | switch (cmd) { |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 81 | case VIDIOC_S_AUDIO: |
| 82 | /* There are 2 physical inputs, but the second input can be |
| 83 | placed in two modes, the first mode bypasses the PGA (gain), |
| 84 | the second goes through the PGA. Hence there are three |
| 85 | possible inputs to choose from. */ |
| 86 | if (input->index > 2) { |
| 87 | cs53l32a_err("Invalid input %d.\n", input->index); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 88 | return -EINVAL; |
| 89 | } |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 90 | cs53l32a_write(client, 0x01, 0x01 + (input->index << 4)); |
| 91 | break; |
| 92 | |
| 93 | case VIDIOC_G_AUDIO: |
| 94 | memset(input, 0, sizeof(*input)); |
| 95 | input->index = (cs53l32a_read(client, 0x01) >> 4) & 3; |
| 96 | break; |
| 97 | |
| 98 | case VIDIOC_G_CTRL: |
| 99 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 100 | ctrl->value = (cs53l32a_read(client, 0x03) & 0xc0) != 0; |
| 101 | break; |
| 102 | } |
| 103 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 104 | return -EINVAL; |
| 105 | ctrl->value = (s8)cs53l32a_read(client, 0x04); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 106 | break; |
| 107 | |
| 108 | case VIDIOC_S_CTRL: |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 109 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
| 110 | cs53l32a_write(client, 0x03, ctrl->value ? 0xf0 : 0x30); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 111 | break; |
| 112 | } |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 113 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
| 114 | return -EINVAL; |
| 115 | if (ctrl->value > 12 || ctrl->value < -96) |
| 116 | return -EINVAL; |
| 117 | cs53l32a_write(client, 0x04, (u8) ctrl->value); |
| 118 | cs53l32a_write(client, 0x05, (u8) ctrl->value); |
| 119 | break; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 120 | |
| 121 | case VIDIOC_LOG_STATUS: |
| 122 | { |
| 123 | u8 v = cs53l32a_read(client, 0x01); |
| 124 | u8 m = cs53l32a_read(client, 0x03); |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 125 | s8 vol = cs53l32a_read(client, 0x04); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 126 | |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 127 | cs53l32a_info("Input: %d%s\n", (v >> 4) & 3, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 128 | (m & 0xC0) ? " (muted)" : ""); |
Hans Verkuil | 9360535 | 2006-01-09 15:25:39 -0200 | [diff] [blame^] | 129 | cs53l32a_info("Volume: %d dB\n", vol); |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 130 | break; |
| 131 | } |
| 132 | |
| 133 | default: |
| 134 | return -EINVAL; |
| 135 | } |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | /* ----------------------------------------------------------------------- */ |
| 140 | |
| 141 | /* i2c implementation */ |
| 142 | |
| 143 | /* |
| 144 | * Generic i2c probe |
| 145 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 146 | */ |
| 147 | |
| 148 | static struct i2c_driver i2c_driver; |
| 149 | |
| 150 | static int cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind) |
| 151 | { |
| 152 | struct i2c_client *client; |
| 153 | int i; |
| 154 | |
| 155 | /* Check if the adapter supports the needed features */ |
| 156 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 157 | return 0; |
| 158 | |
| 159 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| 160 | if (client == 0) |
| 161 | return -ENOMEM; |
| 162 | |
| 163 | memset(client, 0, sizeof(struct i2c_client)); |
| 164 | client->addr = address; |
| 165 | client->adapter = adapter; |
| 166 | client->driver = &i2c_driver; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 167 | snprintf(client->name, sizeof(client->name) - 1, "cs53l32a"); |
| 168 | |
| 169 | cs53l32a_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name); |
| 170 | |
| 171 | for (i = 1; i <= 7; i++) { |
| 172 | u8 v = cs53l32a_read(client, i); |
| 173 | |
| 174 | cs53l32a_dbg("Read Reg %d %02x\n", i, v); |
| 175 | } |
| 176 | |
| 177 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
| 178 | |
| 179 | cs53l32a_write(client, 0x01, (u8) 0x21); |
| 180 | cs53l32a_write(client, 0x02, (u8) 0x29); |
| 181 | cs53l32a_write(client, 0x03, (u8) 0x30); |
| 182 | cs53l32a_write(client, 0x04, (u8) 0x00); |
| 183 | cs53l32a_write(client, 0x05, (u8) 0x00); |
| 184 | cs53l32a_write(client, 0x06, (u8) 0x00); |
| 185 | cs53l32a_write(client, 0x07, (u8) 0x00); |
| 186 | |
| 187 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ |
| 188 | |
| 189 | for (i = 1; i <= 7; i++) { |
| 190 | u8 v = cs53l32a_read(client, i); |
| 191 | |
| 192 | cs53l32a_dbg("Read Reg %d %02x\n", i, v); |
| 193 | } |
| 194 | |
| 195 | i2c_attach_client(client); |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | static int cs53l32a_probe(struct i2c_adapter *adapter) |
| 201 | { |
Hans Verkuil | e2998e1 | 2005-11-08 21:38:49 -0800 | [diff] [blame] | 202 | if (adapter->class & I2C_CLASS_TV_ANALOG) |
Hans Verkuil | e2998e1 | 2005-11-08 21:38:49 -0800 | [diff] [blame] | 203 | return i2c_probe(adapter, &addr_data, cs53l32a_attach); |
| 204 | return 0; |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | static int cs53l32a_detach(struct i2c_client *client) |
| 208 | { |
| 209 | int err; |
| 210 | |
| 211 | err = i2c_detach_client(client); |
| 212 | if (err) { |
| 213 | return err; |
| 214 | } |
| 215 | kfree(client); |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | /* ----------------------------------------------------------------------- */ |
| 221 | |
| 222 | /* i2c implementation */ |
| 223 | static struct i2c_driver i2c_driver = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 224 | .driver = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 225 | .name = "cs53l32a", |
| 226 | }, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 227 | .id = I2C_DRIVERID_CS53L32A, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 228 | .attach_adapter = cs53l32a_probe, |
| 229 | .detach_client = cs53l32a_detach, |
| 230 | .command = cs53l32a_command, |
Hans Verkuil | f4067fd | 2005-11-08 21:37:55 -0800 | [diff] [blame] | 231 | }; |
| 232 | |
| 233 | |
| 234 | static int __init cs53l32a_init_module(void) |
| 235 | { |
| 236 | return i2c_add_driver(&i2c_driver); |
| 237 | } |
| 238 | |
| 239 | static void __exit cs53l32a_cleanup_module(void) |
| 240 | { |
| 241 | i2c_del_driver(&i2c_driver); |
| 242 | } |
| 243 | |
| 244 | module_init(cs53l32a_init_module); |
| 245 | module_exit(cs53l32a_cleanup_module); |