| /* |
| * adv7175 - adv7175a video encoder driver version 0.0.3 |
| * |
| * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> |
| * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
| * - some corrections for Pinnacle Systems Inc. DC10plus card. |
| * |
| * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| * - moved over to linux>=2.4.x i2c protocol (9/9/2002) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/fs.h> |
| #include <linux/kernel.h> |
| #include <linux/major.h> |
| #include <linux/slab.h> |
| #include <linux/mm.h> |
| #include <linux/pci.h> |
| #include <linux/signal.h> |
| #include <asm/io.h> |
| #include <asm/pgtable.h> |
| #include <asm/page.h> |
| #include <linux/sched.h> |
| #include <linux/types.h> |
| |
| #include <linux/videodev.h> |
| #include <asm/uaccess.h> |
| |
| MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); |
| MODULE_AUTHOR("Dave Perks"); |
| MODULE_LICENSE("GPL"); |
| |
| #include <linux/i2c.h> |
| #include <linux/i2c-dev.h> |
| |
| #define I2C_NAME(s) (s)->name |
| |
| #include <linux/video_encoder.h> |
| |
| static int debug = 0; |
| module_param(debug, int, 0); |
| MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| |
| #define dprintk(num, format, args...) \ |
| do { \ |
| if (debug >= num) \ |
| printk(format, ##args); \ |
| } while (0) |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| struct adv7175 { |
| int norm; |
| int input; |
| int enable; |
| int bright; |
| int contrast; |
| int hue; |
| int sat; |
| }; |
| |
| #define I2C_ADV7175 0xd4 |
| #define I2C_ADV7176 0x54 |
| |
| static char adv7175_name[] = "adv7175"; |
| static char adv7176_name[] = "adv7176"; |
| |
| static char *inputs[] = { "pass_through", "play_back", "color_bar" }; |
| static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" }; |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static inline int |
| adv7175_write (struct i2c_client *client, |
| u8 reg, |
| u8 value) |
| { |
| return i2c_smbus_write_byte_data(client, reg, value); |
| } |
| |
| static inline int |
| adv7175_read (struct i2c_client *client, |
| u8 reg) |
| { |
| return i2c_smbus_read_byte_data(client, reg); |
| } |
| |
| static int |
| adv7175_write_block (struct i2c_client *client, |
| const u8 *data, |
| unsigned int len) |
| { |
| int ret = -1; |
| u8 reg; |
| |
| /* the adv7175 has an autoincrement function, use it if |
| * the adapter understands raw I2C */ |
| if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| /* do raw I2C, not smbus compatible */ |
| struct i2c_msg msg; |
| u8 block_data[32]; |
| |
| msg.addr = client->addr; |
| msg.flags = 0; |
| while (len >= 2) { |
| msg.buf = (char *) block_data; |
| msg.len = 0; |
| block_data[msg.len++] = reg = data[0]; |
| do { |
| block_data[msg.len++] = data[1]; |
| reg++; |
| len -= 2; |
| data += 2; |
| } while (len >= 2 && data[0] == reg && |
| msg.len < 32); |
| if ((ret = i2c_transfer(client->adapter, |
| &msg, 1)) < 0) |
| break; |
| } |
| } else { |
| /* do some slow I2C emulation kind of thing */ |
| while (len >= 2) { |
| reg = *data++; |
| if ((ret = adv7175_write(client, reg, |
| *data++)) < 0) |
| break; |
| len -= 2; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static void |
| set_subcarrier_freq (struct i2c_client *client, |
| int pass_through) |
| { |
| /* for some reason pass_through NTSC needs |
| * a different sub-carrier freq to remain stable. */ |
| if(pass_through) |
| adv7175_write(client, 0x02, 0x00); |
| else |
| adv7175_write(client, 0x02, 0x55); |
| |
| adv7175_write(client, 0x03, 0x55); |
| adv7175_write(client, 0x04, 0x55); |
| adv7175_write(client, 0x05, 0x25); |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| // Output filter: S-Video Composite |
| |
| #define MR050 0x11 //0x09 |
| #define MR060 0x14 //0x0c |
| |
| //--------------------------------------------------------------------------- |
| |
| #define TR0MODE 0x46 |
| #define TR0RST 0x80 |
| |
| #define TR1CAPT 0x80 |
| #define TR1PLAY 0x00 |
| |
| static const unsigned char init_common[] = { |
| |
| 0x00, MR050, /* MR0, PAL enabled */ |
| 0x01, 0x00, /* MR1 */ |
| 0x02, 0x0c, /* subc. freq. */ |
| 0x03, 0x8c, /* subc. freq. */ |
| 0x04, 0x79, /* subc. freq. */ |
| 0x05, 0x26, /* subc. freq. */ |
| 0x06, 0x40, /* subc. phase */ |
| |
| 0x07, TR0MODE, /* TR0, 16bit */ |
| 0x08, 0x21, /* */ |
| 0x09, 0x00, /* */ |
| 0x0a, 0x00, /* */ |
| 0x0b, 0x00, /* */ |
| 0x0c, TR1CAPT, /* TR1 */ |
| 0x0d, 0x4f, /* MR2 */ |
| 0x0e, 0x00, /* */ |
| 0x0f, 0x00, /* */ |
| 0x10, 0x00, /* */ |
| 0x11, 0x00, /* */ |
| }; |
| |
| static const unsigned char init_pal[] = { |
| 0x00, MR050, /* MR0, PAL enabled */ |
| 0x01, 0x00, /* MR1 */ |
| 0x02, 0x0c, /* subc. freq. */ |
| 0x03, 0x8c, /* subc. freq. */ |
| 0x04, 0x79, /* subc. freq. */ |
| 0x05, 0x26, /* subc. freq. */ |
| 0x06, 0x40, /* subc. phase */ |
| }; |
| |
| static const unsigned char init_ntsc[] = { |
| 0x00, MR060, /* MR0, NTSC enabled */ |
| 0x01, 0x00, /* MR1 */ |
| 0x02, 0x55, /* subc. freq. */ |
| 0x03, 0x55, /* subc. freq. */ |
| 0x04, 0x55, /* subc. freq. */ |
| 0x05, 0x25, /* subc. freq. */ |
| 0x06, 0x1a, /* subc. phase */ |
| }; |
| |
| static int |
| adv7175_command (struct i2c_client *client, |
| unsigned int cmd, |
| void *arg) |
| { |
| struct adv7175 *encoder = i2c_get_clientdata(client); |
| |
| switch (cmd) { |
| |
| case 0: |
| /* This is just for testing!!! */ |
| adv7175_write_block(client, init_common, |
| sizeof(init_common)); |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| break; |
| |
| case ENCODER_GET_CAPABILITIES: |
| { |
| struct video_encoder_capability *cap = arg; |
| |
| cap->flags = VIDEO_ENCODER_PAL | |
| VIDEO_ENCODER_NTSC | |
| VIDEO_ENCODER_SECAM; /* well, hacky */ |
| cap->inputs = 2; |
| cap->outputs = 1; |
| } |
| break; |
| |
| case ENCODER_SET_NORM: |
| { |
| int iarg = *(int *) arg; |
| |
| switch (iarg) { |
| |
| case VIDEO_MODE_NTSC: |
| adv7175_write_block(client, init_ntsc, |
| sizeof(init_ntsc)); |
| if (encoder->input == 0) |
| adv7175_write(client, 0x0d, 0x4f); // Enable genlock |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| break; |
| |
| case VIDEO_MODE_PAL: |
| adv7175_write_block(client, init_pal, |
| sizeof(init_pal)); |
| if (encoder->input == 0) |
| adv7175_write(client, 0x0d, 0x4f); // Enable genlock |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| break; |
| |
| case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM. |
| /* This is an attempt to convert |
| * SECAM->PAL (typically it does not work |
| * due to genlock: when decoder is in SECAM |
| * and encoder in in PAL the subcarrier can |
| * not be syncronized with horizontal |
| * quency) */ |
| adv7175_write_block(client, init_pal, |
| sizeof(init_pal)); |
| if (encoder->input == 0) |
| adv7175_write(client, 0x0d, 0x49); // Disable genlock |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| break; |
| default: |
| dprintk(1, KERN_ERR "%s: illegal norm: %d\n", |
| I2C_NAME(client), iarg); |
| return -EINVAL; |
| |
| } |
| dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), |
| norms[iarg]); |
| encoder->norm = iarg; |
| } |
| break; |
| |
| case ENCODER_SET_INPUT: |
| { |
| int iarg = *(int *) arg; |
| |
| /* RJ: *iarg = 0: input is from SAA7110 |
| *iarg = 1: input is from ZR36060 |
| *iarg = 2: color bar */ |
| |
| switch (iarg) { |
| |
| case 0: |
| adv7175_write(client, 0x01, 0x00); |
| |
| if (encoder->norm == VIDEO_MODE_NTSC) |
| set_subcarrier_freq(client, 1); |
| |
| adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */ |
| if (encoder->norm == VIDEO_MODE_SECAM) |
| adv7175_write(client, 0x0d, 0x49); // Disable genlock |
| else |
| adv7175_write(client, 0x0d, 0x4f); // Enable genlock |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| //udelay(10); |
| break; |
| |
| case 1: |
| adv7175_write(client, 0x01, 0x00); |
| |
| if (encoder->norm == VIDEO_MODE_NTSC) |
| set_subcarrier_freq(client, 0); |
| |
| adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */ |
| adv7175_write(client, 0x0d, 0x49); |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| //udelay(10); |
| break; |
| |
| case 2: |
| adv7175_write(client, 0x01, 0x80); |
| |
| if (encoder->norm == VIDEO_MODE_NTSC) |
| set_subcarrier_freq(client, 0); |
| |
| adv7175_write(client, 0x0d, 0x49); |
| adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| adv7175_write(client, 0x07, TR0MODE); |
| //udelay(10); |
| break; |
| |
| default: |
| dprintk(1, KERN_ERR "%s: illegal input: %d\n", |
| I2C_NAME(client), iarg); |
| return -EINVAL; |
| |
| } |
| dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), |
| inputs[iarg]); |
| encoder->input = iarg; |
| } |
| break; |
| |
| case ENCODER_SET_OUTPUT: |
| { |
| int *iarg = arg; |
| |
| /* not much choice of outputs */ |
| if (*iarg != 0) { |
| return -EINVAL; |
| } |
| } |
| break; |
| |
| case ENCODER_ENABLE_OUTPUT: |
| { |
| int *iarg = arg; |
| |
| encoder->enable = !!*iarg; |
| } |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| /* |
| * Generic i2c probe |
| * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| */ |
| static unsigned short normal_i2c[] = |
| { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1, |
| I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1, |
| I2C_CLIENT_END |
| }; |
| |
| static unsigned short ignore = I2C_CLIENT_END; |
| |
| static struct i2c_client_address_data addr_data = { |
| .normal_i2c = normal_i2c, |
| .probe = &ignore, |
| .ignore = &ignore, |
| }; |
| |
| static struct i2c_driver i2c_driver_adv7175; |
| |
| static int |
| adv7175_detect_client (struct i2c_adapter *adapter, |
| int address, |
| int kind) |
| { |
| int i; |
| struct i2c_client *client; |
| struct adv7175 *encoder; |
| char *dname; |
| |
| dprintk(1, |
| KERN_INFO |
| "adv7175.c: detecting adv7175 client on address 0x%x\n", |
| address << 1); |
| |
| /* Check if the adapter supports the needed features */ |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| return 0; |
| |
| client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| if (client == 0) |
| return -ENOMEM; |
| client->addr = address; |
| client->adapter = adapter; |
| client->driver = &i2c_driver_adv7175; |
| if ((client->addr == I2C_ADV7175 >> 1) || |
| (client->addr == (I2C_ADV7175 >> 1) + 1)) { |
| dname = adv7175_name; |
| } else if ((client->addr == I2C_ADV7176 >> 1) || |
| (client->addr == (I2C_ADV7176 >> 1) + 1)) { |
| dname = adv7176_name; |
| } else { |
| /* We should never get here!!! */ |
| kfree(client); |
| return 0; |
| } |
| strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); |
| |
| encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); |
| if (encoder == NULL) { |
| kfree(client); |
| return -ENOMEM; |
| } |
| encoder->norm = VIDEO_MODE_PAL; |
| encoder->input = 0; |
| encoder->enable = 1; |
| i2c_set_clientdata(client, encoder); |
| |
| i = i2c_attach_client(client); |
| if (i) { |
| kfree(client); |
| kfree(encoder); |
| return i; |
| } |
| |
| i = adv7175_write_block(client, init_common, sizeof(init_common)); |
| if (i >= 0) { |
| i = adv7175_write(client, 0x07, TR0MODE | TR0RST); |
| i = adv7175_write(client, 0x07, TR0MODE); |
| i = adv7175_read(client, 0x12); |
| dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n", |
| I2C_NAME(client), i & 1, client->addr << 1); |
| } |
| if (i < 0) { |
| dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", |
| I2C_NAME(client), i); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| adv7175_attach_adapter (struct i2c_adapter *adapter) |
| { |
| dprintk(1, |
| KERN_INFO |
| "adv7175.c: starting probe for adapter %s (0x%x)\n", |
| I2C_NAME(adapter), adapter->id); |
| return i2c_probe(adapter, &addr_data, &adv7175_detect_client); |
| } |
| |
| static int |
| adv7175_detach_client (struct i2c_client *client) |
| { |
| struct adv7175 *encoder = i2c_get_clientdata(client); |
| int err; |
| |
| err = i2c_detach_client(client); |
| if (err) { |
| return err; |
| } |
| |
| kfree(encoder); |
| kfree(client); |
| |
| return 0; |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static struct i2c_driver i2c_driver_adv7175 = { |
| .driver = { |
| .name = "adv7175", /* name */ |
| }, |
| |
| .id = I2C_DRIVERID_ADV7175, |
| |
| .attach_adapter = adv7175_attach_adapter, |
| .detach_client = adv7175_detach_client, |
| .command = adv7175_command, |
| }; |
| |
| static int __init |
| adv7175_init (void) |
| { |
| return i2c_add_driver(&i2c_driver_adv7175); |
| } |
| |
| static void __exit |
| adv7175_exit (void) |
| { |
| i2c_del_driver(&i2c_driver_adv7175); |
| } |
| |
| module_init(adv7175_init); |
| module_exit(adv7175_exit); |