/* * 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/types.h> #include <linux/slab.h> #include <linux/ioctl.h> #include <asm/uaccess.h> #include <linux/i2c.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-chip-ident.h> MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); MODULE_AUTHOR("Dave Perks"); MODULE_LICENSE("GPL"); #define I2C_ADV7175 0xd4 #define I2C_ADV7176 0x54 static int debug; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* ----------------------------------------------------------------------- */ struct adv7175 { struct v4l2_subdev sd; v4l2_std_id norm; int input; }; static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd) { return container_of(sd, struct adv7175, sd); } static char *inputs[] = { "pass_through", "play_back", "color_bar" }; /* ----------------------------------------------------------------------- */ static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_write_byte_data(client, reg, value); } static inline int adv7175_read(struct v4l2_subdev *sd, u8 reg) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_read_byte_data(client, reg); } static int adv7175_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len) { struct i2c_client *client = v4l2_get_subdevdata(sd); 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 */ u8 block_data[32]; int block_len; while (len >= 2) { block_len = 0; block_data[block_len++] = reg = data[0]; do { block_data[block_len++] = data[1]; reg++; len -= 2; data += 2; } while (len >= 2 && data[0] == reg && block_len < 32); ret = i2c_master_send(client, block_data, block_len); if (ret < 0) break; } } else { /* do some slow I2C emulation kind of thing */ while (len >= 2) { reg = *data++; ret = adv7175_write(sd, reg, *data++); if (ret < 0) break; len -= 2; } } return ret; } static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through) { /* for some reason pass_through NTSC needs * a different sub-carrier freq to remain stable. */ if (pass_through) adv7175_write(sd, 0x02, 0x00); else adv7175_write(sd, 0x02, 0x55); adv7175_write(sd, 0x03, 0x55); adv7175_write(sd, 0x04, 0x55); adv7175_write(sd, 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_init(struct v4l2_subdev *sd, u32 val) { /* This is just for testing!!! */ adv7175_write_block(sd, init_common, sizeof(init_common)); adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); return 0; } static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) { struct adv7175 *encoder = to_adv7175(sd); if (std & V4L2_STD_NTSC) { adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc)); if (encoder->input == 0) adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); } else if (std & V4L2_STD_PAL) { adv7175_write_block(sd, init_pal, sizeof(init_pal)); if (encoder->input == 0) adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); } else if (std & V4L2_STD_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(sd, init_pal, sizeof(init_pal)); if (encoder->input == 0) adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); } else { v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", (unsigned long long)std); return -EINVAL; } v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); encoder->norm = std; return 0; } static int adv7175_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct adv7175 *encoder = to_adv7175(sd); /* RJ: input = 0: input is from decoder input = 1: input is from ZR36060 input = 2: color bar */ switch (input) { case 0: adv7175_write(sd, 0x01, 0x00); if (encoder->norm & V4L2_STD_NTSC) set_subcarrier_freq(sd, 1); adv7175_write(sd, 0x0c, TR1CAPT); /* TR1 */ if (encoder->norm & V4L2_STD_SECAM) adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ else adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); /*udelay(10);*/ break; case 1: adv7175_write(sd, 0x01, 0x00); if (encoder->norm & V4L2_STD_NTSC) set_subcarrier_freq(sd, 0); adv7175_write(sd, 0x0c, TR1PLAY); /* TR1 */ adv7175_write(sd, 0x0d, 0x49); adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); /* udelay(10); */ break; case 2: adv7175_write(sd, 0x01, 0x80); if (encoder->norm & V4L2_STD_NTSC) set_subcarrier_freq(sd, 0); adv7175_write(sd, 0x0d, 0x49); adv7175_write(sd, 0x07, TR0MODE | TR0RST); adv7175_write(sd, 0x07, TR0MODE); /* udelay(10); */ break; default: v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); return -EINVAL; } v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); encoder->input = input; return 0; } static int adv7175_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) { struct i2c_client *client = v4l2_get_subdevdata(sd); return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7175, 0); } static int adv7175_s_power(struct v4l2_subdev *sd, int on) { if (on) adv7175_write(sd, 0x01, 0x00); else adv7175_write(sd, 0x01, 0x78); return 0; } /* ----------------------------------------------------------------------- */ static const struct v4l2_subdev_core_ops adv7175_core_ops = { .g_chip_ident = adv7175_g_chip_ident, .init = adv7175_init, .s_power = adv7175_s_power, }; static const struct v4l2_subdev_video_ops adv7175_video_ops = { .s_std_output = adv7175_s_std_output, .s_routing = adv7175_s_routing, }; static const struct v4l2_subdev_ops adv7175_ops = { .core = &adv7175_core_ops, .video = &adv7175_video_ops, }; /* ----------------------------------------------------------------------- */ static int adv7175_probe(struct i2c_client *client, const struct i2c_device_id *id) { int i; struct adv7175 *encoder; struct v4l2_subdev *sd; /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); if (encoder == NULL) return -ENOMEM; sd = &encoder->sd; v4l2_i2c_subdev_init(sd, client, &adv7175_ops); encoder->norm = V4L2_STD_NTSC; encoder->input = 0; i = adv7175_write_block(sd, init_common, sizeof(init_common)); if (i >= 0) { i = adv7175_write(sd, 0x07, TR0MODE | TR0RST); i = adv7175_write(sd, 0x07, TR0MODE); i = adv7175_read(sd, 0x12); v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); } if (i < 0) v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); return 0; } static int adv7175_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); v4l2_device_unregister_subdev(sd); kfree(to_adv7175(sd)); return 0; } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id adv7175_id[] = { { "adv7175", 0 }, { "adv7176", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, adv7175_id); static struct i2c_driver adv7175_driver = { .driver = { .owner = THIS_MODULE, .name = "adv7175", }, .probe = adv7175_probe, .remove = adv7175_remove, .id_table = adv7175_id, }; static __init int init_adv7175(void) { return i2c_add_driver(&adv7175_driver); } static __exit void exit_adv7175(void) { i2c_del_driver(&adv7175_driver); } module_init(init_adv7175); module_exit(exit_adv7175);