/* * saa7185 - Philips SAA7185B video encoder driver version 0.0.3 * * Copyright (C) 1998 Dave Perks <dperks@ibm.net> * * Slight changes for video timing and attachment output by * Wolfgang Scherr <scherr@net4you.net> * * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> * - moved over to linux>=2.4.x i2c protocol (1/1/2003) * * 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/ioctl.h> #include <asm/uaccess.h> #include <linux/i2c.h> #include <linux/i2c-id.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-chip-ident.h> #include <media/v4l2-i2c-drv.h> MODULE_DESCRIPTION("Philips SAA7185 video encoder driver"); MODULE_AUTHOR("Dave Perks"); MODULE_LICENSE("GPL"); static int debug; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* ----------------------------------------------------------------------- */ struct saa7185 { struct v4l2_subdev sd; unsigned char reg[128]; v4l2_std_id norm; }; static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd) { return container_of(sd, struct saa7185, sd); } /* ----------------------------------------------------------------------- */ static inline int saa7185_read(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_read_byte(client); } static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7185 *encoder = to_saa7185(sd); v4l2_dbg(1, debug, sd, "%02x set to %02x\n", reg, value); encoder->reg[reg] = value; return i2c_smbus_write_byte_data(client, reg, value); } static int saa7185_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7185 *encoder = to_saa7185(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++] = encoder->reg[reg++] = data[1]; 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 = saa7185_write(sd, reg, *data++); if (ret < 0) break; len -= 2; } } return ret; } /* ----------------------------------------------------------------------- */ static const unsigned char init_common[] = { 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1, * YUV2C=1, MY2C=1, MUV2C=1 */ 0x42, 0x6b, /* OVLY0=107 */ 0x43, 0x00, /* OVLU0=0 white */ 0x44, 0x00, /* OVLV0=0 */ 0x45, 0x22, /* OVLY1=34 */ 0x46, 0xac, /* OVLU1=172 yellow */ 0x47, 0x0e, /* OVLV1=14 */ 0x48, 0x03, /* OVLY2=3 */ 0x49, 0x1d, /* OVLU2=29 cyan */ 0x4a, 0xac, /* OVLV2=172 */ 0x4b, 0xf0, /* OVLY3=240 */ 0x4c, 0xc8, /* OVLU3=200 green */ 0x4d, 0xb9, /* OVLV3=185 */ 0x4e, 0xd4, /* OVLY4=212 */ 0x4f, 0x38, /* OVLU4=56 magenta */ 0x50, 0x47, /* OVLV4=71 */ 0x51, 0xc1, /* OVLY5=193 */ 0x52, 0xe3, /* OVLU5=227 red */ 0x53, 0x54, /* OVLV5=84 */ 0x54, 0xa3, /* OVLY6=163 */ 0x55, 0x54, /* OVLU6=84 blue */ 0x56, 0xf2, /* OVLV6=242 */ 0x57, 0x90, /* OVLY7=144 */ 0x58, 0x00, /* OVLU7=0 black */ 0x59, 0x00, /* OVLV7=0 */ 0x5a, 0x00, /* CHPS=0 */ 0x5b, 0x76, /* GAINU=118 */ 0x5c, 0xa5, /* GAINV=165 */ 0x5d, 0x3c, /* BLCKL=60 */ 0x5e, 0x3a, /* BLNNL=58 */ 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */ 0x60, 0x00, /* NULL */ /* 0x61 - 0x66 set according to norm */ 0x67, 0x00, /* 0 : caption 1st byte odd field */ 0x68, 0x00, /* 0 : caption 2nd byte odd field */ 0x69, 0x00, /* 0 : caption 1st byte even field */ 0x6a, 0x00, /* 0 : caption 2nd byte even field */ 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */ 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0, * CBLF=0, ORCV2=0, PRCV2=0 */ 0x6d, 0x00, /* SRCM1=0, CCEN=0 */ 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at * least for PAL */ 0x6f, 0x00, /* HTRIG upper bits */ 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */ /* The following should not be needed */ 0x71, 0x15, /* BMRQ=0x115 */ 0x72, 0x90, /* EMRQ=0x690 */ 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */ 0x74, 0x00, /* NULL */ 0x75, 0x00, /* NULL */ 0x76, 0x00, /* NULL */ 0x77, 0x15, /* BRCV=0x115 */ 0x78, 0x90, /* ERCV=0x690 */ 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */ /* Field length controls */ 0x7a, 0x70, /* FLC=0 */ /* The following should not be needed if SBLN = 1 */ 0x7b, 0x16, /* FAL=22 */ 0x7c, 0x35, /* LAL=244 */ 0x7d, 0x20, /* LAL=244, FAL=22 */ }; static const unsigned char init_pal[] = { 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1, * YGS=1, INPI=0, DOWN=0 */ 0x62, 0xc8, /* DECTYP=1, BSTA=72 */ 0x63, 0xcb, /* FSC0 */ 0x64, 0x8a, /* FSC1 */ 0x65, 0x09, /* FSC2 */ 0x66, 0x2a, /* FSC3 */ }; static const unsigned char init_ntsc[] = { 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1, * YGS=1, INPI=0, DOWN=0 */ 0x62, 0xe6, /* DECTYP=1, BSTA=102 */ 0x63, 0x1f, /* FSC0 */ 0x64, 0x7c, /* FSC1 */ 0x65, 0xf0, /* FSC2 */ 0x66, 0x21, /* FSC3 */ }; static int saa7185_init(struct v4l2_subdev *sd, u32 val) { struct saa7185 *encoder = to_saa7185(sd); saa7185_write_block(sd, init_common, sizeof(init_common)); if (encoder->norm & V4L2_STD_NTSC) saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); else saa7185_write_block(sd, init_pal, sizeof(init_pal)); return 0; } static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) { struct saa7185 *encoder = to_saa7185(sd); if (std & V4L2_STD_NTSC) saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); else if (std & V4L2_STD_PAL) saa7185_write_block(sd, init_pal, sizeof(init_pal)); else return -EINVAL; encoder->norm = std; return 0; } static int saa7185_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct saa7185 *encoder = to_saa7185(sd); /* RJ: input = 0: input is from SA7111 input = 1: input is from ZR36060 */ switch (input) { case 0: /* turn off colorbar */ saa7185_write(sd, 0x3a, 0x0f); /* Switch RTCE to 1 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); saa7185_write(sd, 0x6e, 0x01); break; case 1: /* turn off colorbar */ saa7185_write(sd, 0x3a, 0x0f); /* Switch RTCE to 0 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00); /* SW: a slight sync problem... */ saa7185_write(sd, 0x6e, 0x00); break; case 2: /* turn on colorbar */ saa7185_write(sd, 0x3a, 0x8f); /* Switch RTCE to 0 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); /* SW: a slight sync problem... */ saa7185_write(sd, 0x6e, 0x01); break; default: return -EINVAL; } return 0; } static int saa7185_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_SAA7185, 0); } /* ----------------------------------------------------------------------- */ static const struct v4l2_subdev_core_ops saa7185_core_ops = { .g_chip_ident = saa7185_g_chip_ident, .init = saa7185_init, }; static const struct v4l2_subdev_video_ops saa7185_video_ops = { .s_std_output = saa7185_s_std_output, .s_routing = saa7185_s_routing, }; static const struct v4l2_subdev_ops saa7185_ops = { .core = &saa7185_core_ops, .video = &saa7185_video_ops, }; /* ----------------------------------------------------------------------- */ static int saa7185_probe(struct i2c_client *client, const struct i2c_device_id *id) { int i; struct saa7185 *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 saa7185), GFP_KERNEL); if (encoder == NULL) return -ENOMEM; encoder->norm = V4L2_STD_NTSC; sd = &encoder->sd; v4l2_i2c_subdev_init(sd, client, &saa7185_ops); i = saa7185_write_block(sd, init_common, sizeof(init_common)); if (i >= 0) i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); if (i < 0) v4l2_dbg(1, debug, sd, "init error %d\n", i); else v4l2_dbg(1, debug, sd, "revision 0x%x\n", saa7185_read(sd) >> 5); return 0; } static int saa7185_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct saa7185 *encoder = to_saa7185(sd); v4l2_device_unregister_subdev(sd); /* SW: output off is active */ saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40); kfree(encoder); return 0; } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id saa7185_id[] = { { "saa7185", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, saa7185_id); static struct v4l2_i2c_driver_data v4l2_i2c_data = { .name = "saa7185", .probe = saa7185_probe, .remove = saa7185_remove, .id_table = saa7185_id, };