| /* |
| * 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/videodev.h> |
| #include <linux/video_encoder.h> |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-i2c-drv-legacy.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 { |
| unsigned char reg[128]; |
| |
| int norm; |
| int enable; |
| int bright; |
| int contrast; |
| int hue; |
| int sat; |
| }; |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static inline int saa7185_read(struct i2c_client *client) |
| { |
| return i2c_smbus_read_byte(client); |
| } |
| |
| static int saa7185_write(struct i2c_client *client, u8 reg, u8 value) |
| { |
| struct saa7185 *encoder = i2c_get_clientdata(client); |
| |
| v4l_dbg(1, debug, client, "%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 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 saa7185 *encoder = i2c_get_clientdata(client); |
| 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(client, 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_command(struct i2c_client *client, unsigned cmd, void *arg) |
| { |
| struct saa7185 *encoder = i2c_get_clientdata(client); |
| |
| switch (cmd) { |
| case 0: |
| saa7185_write_block(client, init_common, |
| sizeof(init_common)); |
| switch (encoder->norm) { |
| |
| case VIDEO_MODE_NTSC: |
| saa7185_write_block(client, init_ntsc, |
| sizeof(init_ntsc)); |
| break; |
| |
| case VIDEO_MODE_PAL: |
| saa7185_write_block(client, init_pal, |
| sizeof(init_pal)); |
| break; |
| } |
| break; |
| |
| case ENCODER_GET_CAPABILITIES: |
| { |
| struct video_encoder_capability *cap = arg; |
| |
| cap->flags = |
| VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC | |
| VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR; |
| cap->inputs = 1; |
| cap->outputs = 1; |
| break; |
| } |
| |
| case ENCODER_SET_NORM: |
| { |
| int *iarg = arg; |
| |
| //saa7185_write_block(client, init_common, sizeof(init_common)); |
| |
| switch (*iarg) { |
| case VIDEO_MODE_NTSC: |
| saa7185_write_block(client, init_ntsc, |
| sizeof(init_ntsc)); |
| break; |
| |
| case VIDEO_MODE_PAL: |
| saa7185_write_block(client, init_pal, |
| sizeof(init_pal)); |
| break; |
| |
| case VIDEO_MODE_SECAM: |
| default: |
| return -EINVAL; |
| } |
| encoder->norm = *iarg; |
| break; |
| } |
| |
| case ENCODER_SET_INPUT: |
| { |
| int *iarg = arg; |
| |
| /* RJ: *iarg = 0: input is from SA7111 |
| *iarg = 1: input is from ZR36060 */ |
| |
| switch (*iarg) { |
| case 0: |
| /* turn off colorbar */ |
| saa7185_write(client, 0x3a, 0x0f); |
| /* Switch RTCE to 1 */ |
| saa7185_write(client, 0x61, |
| (encoder->reg[0x61] & 0xf7) | 0x08); |
| saa7185_write(client, 0x6e, 0x01); |
| break; |
| |
| case 1: |
| /* turn off colorbar */ |
| saa7185_write(client, 0x3a, 0x0f); |
| /* Switch RTCE to 0 */ |
| saa7185_write(client, 0x61, |
| (encoder->reg[0x61] & 0xf7) | 0x00); |
| /* SW: a slight sync problem... */ |
| saa7185_write(client, 0x6e, 0x00); |
| break; |
| |
| case 2: |
| /* turn on colorbar */ |
| saa7185_write(client, 0x3a, 0x8f); |
| /* Switch RTCE to 0 */ |
| saa7185_write(client, 0x61, |
| (encoder->reg[0x61] & 0xf7) | 0x08); |
| /* SW: a slight sync problem... */ |
| saa7185_write(client, 0x6e, 0x01); |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| 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; |
| saa7185_write(client, 0x61, |
| (encoder->reg[0x61] & 0xbf) | |
| (encoder->enable ? 0x00 : 0x40)); |
| break; |
| } |
| |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END }; |
| |
| I2C_CLIENT_INSMOD; |
| |
| static int saa7185_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| int i; |
| struct saa7185 *encoder; |
| |
| /* 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 = VIDEO_MODE_NTSC; |
| encoder->enable = 1; |
| i2c_set_clientdata(client, encoder); |
| |
| i = saa7185_write_block(client, init_common, sizeof(init_common)); |
| if (i >= 0) |
| i = saa7185_write_block(client, init_ntsc, sizeof(init_ntsc)); |
| if (i < 0) |
| v4l_dbg(1, debug, client, "init error %d\n", i); |
| else |
| v4l_dbg(1, debug, client, "revision 0x%x\n", |
| saa7185_read(client) >> 5); |
| return 0; |
| } |
| |
| static int saa7185_remove(struct i2c_client *client) |
| { |
| struct saa7185 *encoder = i2c_get_clientdata(client); |
| |
| saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */ |
| //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */ |
| |
| 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", |
| .driverid = I2C_DRIVERID_SAA7185B, |
| .command = saa7185_command, |
| .probe = saa7185_probe, |
| .remove = saa7185_remove, |
| .id_table = saa7185_id, |
| }; |