diff options
Diffstat (limited to 'drivers/media/i2c/saa7127.c')
| -rw-r--r-- | drivers/media/i2c/saa7127.c | 833 |
1 files changed, 833 insertions, 0 deletions
diff --git a/drivers/media/i2c/saa7127.c b/drivers/media/i2c/saa7127.c new file mode 100644 index 000000000..264b755be --- /dev/null +++ b/drivers/media/i2c/saa7127.c @@ -0,0 +1,833 @@ +/* + * saa7127 - Philips SAA7127/SAA7129 video encoder driver + * + * Copyright (C) 2003 Roy Bulter <rbulter@hetnet.nl> + * + * Based on SAA7126 video encoder driver by Gillem & Andreas Oberritter + * + * Copyright (C) 2000-2001 Gillem <htoa@gmx.net> + * Copyright (C) 2002 Andreas Oberritter <obi@saftware.de> + * + * Based on Stadis 4:2:2 MPEG-2 Decoder Driver by Nathan Laredo + * + * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org> + * + * This driver is designed for the Hauppauge 250/350 Linux driver + * from the ivtv Project + * + * Copyright (C) 2003 Kevin Thayer <nufan_wfk@yahoo.com> + * + * Dual output support: + * Copyright (C) 2004 Eric Varsanyi + * + * NTSC Tuning and 7.5 IRE Setup + * Copyright (C) 2004 Chris Kennedy <c@groovy.org> + * + * VBI additions & cleanup: + * Copyright (C) 2004, 2005 Hans Verkuil <hverkuil@xs4all.nl> + * + * Note: the saa7126 is identical to the saa7127, and the saa7128 is + * identical to the saa7129, except that the saa7126 and saa7128 have + * macrovision anti-taping support. This driver will almost certainly + * work fine for those chips, except of course for the missing anti-taping + * support. + * + * 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/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/saa7127.h> + +static int debug; +static int test_image; + +MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver"); +MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil"); +MODULE_LICENSE("GPL"); +module_param(debug, int, 0644); +module_param(test_image, int, 0644); +MODULE_PARM_DESC(debug, "debug level (0-2)"); +MODULE_PARM_DESC(test_image, "test_image (0-1)"); + + +/* + * SAA7127 registers + */ + +#define SAA7127_REG_STATUS 0x00 +#define SAA7127_REG_WIDESCREEN_CONFIG 0x26 +#define SAA7127_REG_WIDESCREEN_ENABLE 0x27 +#define SAA7127_REG_BURST_START 0x28 +#define SAA7127_REG_BURST_END 0x29 +#define SAA7127_REG_COPYGEN_0 0x2a +#define SAA7127_REG_COPYGEN_1 0x2b +#define SAA7127_REG_COPYGEN_2 0x2c +#define SAA7127_REG_OUTPUT_PORT_CONTROL 0x2d +#define SAA7127_REG_GAIN_LUMINANCE_RGB 0x38 +#define SAA7127_REG_GAIN_COLORDIFF_RGB 0x39 +#define SAA7127_REG_INPUT_PORT_CONTROL_1 0x3a +#define SAA7129_REG_FADE_KEY_COL2 0x4f +#define SAA7127_REG_CHROMA_PHASE 0x5a +#define SAA7127_REG_GAINU 0x5b +#define SAA7127_REG_GAINV 0x5c +#define SAA7127_REG_BLACK_LEVEL 0x5d +#define SAA7127_REG_BLANKING_LEVEL 0x5e +#define SAA7127_REG_VBI_BLANKING 0x5f +#define SAA7127_REG_DAC_CONTROL 0x61 +#define SAA7127_REG_BURST_AMP 0x62 +#define SAA7127_REG_SUBC3 0x63 +#define SAA7127_REG_SUBC2 0x64 +#define SAA7127_REG_SUBC1 0x65 +#define SAA7127_REG_SUBC0 0x66 +#define SAA7127_REG_LINE_21_ODD_0 0x67 +#define SAA7127_REG_LINE_21_ODD_1 0x68 +#define SAA7127_REG_LINE_21_EVEN_0 0x69 +#define SAA7127_REG_LINE_21_EVEN_1 0x6a +#define SAA7127_REG_RCV_PORT_CONTROL 0x6b +#define SAA7127_REG_VTRIG 0x6c +#define SAA7127_REG_HTRIG_HI 0x6d +#define SAA7127_REG_MULTI 0x6e +#define SAA7127_REG_CLOSED_CAPTION 0x6f +#define SAA7127_REG_RCV2_OUTPUT_START 0x70 +#define SAA7127_REG_RCV2_OUTPUT_END 0x71 +#define SAA7127_REG_RCV2_OUTPUT_MSBS 0x72 +#define SAA7127_REG_TTX_REQUEST_H_START 0x73 +#define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH 0x74 +#define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT 0x75 +#define SAA7127_REG_TTX_ODD_REQ_VERT_START 0x76 +#define SAA7127_REG_TTX_ODD_REQ_VERT_END 0x77 +#define SAA7127_REG_TTX_EVEN_REQ_VERT_START 0x78 +#define SAA7127_REG_TTX_EVEN_REQ_VERT_END 0x79 +#define SAA7127_REG_FIRST_ACTIVE 0x7a +#define SAA7127_REG_LAST_ACTIVE 0x7b +#define SAA7127_REG_MSB_VERTICAL 0x7c +#define SAA7127_REG_DISABLE_TTX_LINE_LO_0 0x7e +#define SAA7127_REG_DISABLE_TTX_LINE_LO_1 0x7f + +/* + ********************************************************************** + * + * Arrays with configuration parameters for the SAA7127 + * + ********************************************************************** + */ + +struct i2c_reg_value { + unsigned char reg; + unsigned char value; +}; + +static const struct i2c_reg_value saa7129_init_config_extra[] = { + { SAA7127_REG_OUTPUT_PORT_CONTROL, 0x38 }, + { SAA7127_REG_VTRIG, 0xfa }, + { 0, 0 } +}; + +static const struct i2c_reg_value saa7127_init_config_common[] = { + { SAA7127_REG_WIDESCREEN_CONFIG, 0x0d }, + { SAA7127_REG_WIDESCREEN_ENABLE, 0x00 }, + { SAA7127_REG_COPYGEN_0, 0x77 }, + { SAA7127_REG_COPYGEN_1, 0x41 }, + { SAA7127_REG_COPYGEN_2, 0x00 }, /* Macrovision enable/disable */ + { SAA7127_REG_OUTPUT_PORT_CONTROL, 0xbf }, + { SAA7127_REG_GAIN_LUMINANCE_RGB, 0x00 }, + { SAA7127_REG_GAIN_COLORDIFF_RGB, 0x00 }, + { SAA7127_REG_INPUT_PORT_CONTROL_1, 0x80 }, /* for color bars */ + { SAA7127_REG_LINE_21_ODD_0, 0x77 }, + { SAA7127_REG_LINE_21_ODD_1, 0x41 }, + { SAA7127_REG_LINE_21_EVEN_0, 0x88 }, + { SAA7127_REG_LINE_21_EVEN_1, 0x41 }, + { SAA7127_REG_RCV_PORT_CONTROL, 0x12 }, + { SAA7127_REG_VTRIG, 0xf9 }, + { SAA7127_REG_HTRIG_HI, 0x00 }, + { SAA7127_REG_RCV2_OUTPUT_START, 0x41 }, + { SAA7127_REG_RCV2_OUTPUT_END, 0xc3 }, + { SAA7127_REG_RCV2_OUTPUT_MSBS, 0x00 }, + { SAA7127_REG_TTX_REQUEST_H_START, 0x3e }, + { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH, 0xb8 }, + { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT, 0x03 }, + { SAA7127_REG_TTX_ODD_REQ_VERT_START, 0x15 }, + { SAA7127_REG_TTX_ODD_REQ_VERT_END, 0x16 }, + { SAA7127_REG_TTX_EVEN_REQ_VERT_START, 0x15 }, + { SAA7127_REG_TTX_EVEN_REQ_VERT_END, 0x16 }, + { SAA7127_REG_FIRST_ACTIVE, 0x1a }, + { SAA7127_REG_LAST_ACTIVE, 0x01 }, + { SAA7127_REG_MSB_VERTICAL, 0xc0 }, + { SAA7127_REG_DISABLE_TTX_LINE_LO_0, 0x00 }, + { SAA7127_REG_DISABLE_TTX_LINE_LO_1, 0x00 }, + { 0, 0 } +}; + +#define SAA7127_60HZ_DAC_CONTROL 0x15 +static const struct i2c_reg_value saa7127_init_config_60hz[] = { + { SAA7127_REG_BURST_START, 0x19 }, + /* BURST_END is also used as a chip ID in saa7127_probe */ + { SAA7127_REG_BURST_END, 0x1d }, + { SAA7127_REG_CHROMA_PHASE, 0xa3 }, + { SAA7127_REG_GAINU, 0x98 }, + { SAA7127_REG_GAINV, 0xd3 }, + { SAA7127_REG_BLACK_LEVEL, 0x39 }, + { SAA7127_REG_BLANKING_LEVEL, 0x2e }, + { SAA7127_REG_VBI_BLANKING, 0x2e }, + { SAA7127_REG_DAC_CONTROL, 0x15 }, + { SAA7127_REG_BURST_AMP, 0x4d }, + { SAA7127_REG_SUBC3, 0x1f }, + { SAA7127_REG_SUBC2, 0x7c }, + { SAA7127_REG_SUBC1, 0xf0 }, + { SAA7127_REG_SUBC0, 0x21 }, + { SAA7127_REG_MULTI, 0x90 }, + { SAA7127_REG_CLOSED_CAPTION, 0x11 }, + { 0, 0 } +}; + +#define SAA7127_50HZ_PAL_DAC_CONTROL 0x02 +static struct i2c_reg_value saa7127_init_config_50hz_pal[] = { + { SAA7127_REG_BURST_START, 0x21 }, + /* BURST_END is also used as a chip ID in saa7127_probe */ + { SAA7127_REG_BURST_END, 0x1d }, + { SAA7127_REG_CHROMA_PHASE, 0x3f }, + { SAA7127_REG_GAINU, 0x7d }, + { SAA7127_REG_GAINV, 0xaf }, + { SAA7127_REG_BLACK_LEVEL, 0x33 }, + { SAA7127_REG_BLANKING_LEVEL, 0x35 }, + { SAA7127_REG_VBI_BLANKING, 0x35 }, + { SAA7127_REG_DAC_CONTROL, 0x02 }, + { SAA7127_REG_BURST_AMP, 0x2f }, + { SAA7127_REG_SUBC3, 0xcb }, + { SAA7127_REG_SUBC2, 0x8a }, + { SAA7127_REG_SUBC1, 0x09 }, + { SAA7127_REG_SUBC0, 0x2a }, + { SAA7127_REG_MULTI, 0xa0 }, + { SAA7127_REG_CLOSED_CAPTION, 0x00 }, + { 0, 0 } +}; + +#define SAA7127_50HZ_SECAM_DAC_CONTROL 0x08 +static struct i2c_reg_value saa7127_init_config_50hz_secam[] = { + { SAA7127_REG_BURST_START, 0x21 }, + /* BURST_END is also used as a chip ID in saa7127_probe */ + { SAA7127_REG_BURST_END, 0x1d }, + { SAA7127_REG_CHROMA_PHASE, 0x3f }, + { SAA7127_REG_GAINU, 0x6a }, + { SAA7127_REG_GAINV, 0x81 }, + { SAA7127_REG_BLACK_LEVEL, 0x33 }, + { SAA7127_REG_BLANKING_LEVEL, 0x35 }, + { SAA7127_REG_VBI_BLANKING, 0x35 }, + { SAA7127_REG_DAC_CONTROL, 0x08 }, + { SAA7127_REG_BURST_AMP, 0x2f }, + { SAA7127_REG_SUBC3, 0xb2 }, + { SAA7127_REG_SUBC2, 0x3b }, + { SAA7127_REG_SUBC1, 0xa3 }, + { SAA7127_REG_SUBC0, 0x28 }, + { SAA7127_REG_MULTI, 0x90 }, + { SAA7127_REG_CLOSED_CAPTION, 0x00 }, + { 0, 0 } +}; + +/* + ********************************************************************** + * + * Encoder Struct, holds the configuration state of the encoder + * + ********************************************************************** + */ + +enum saa712x_model { + SAA7127, + SAA7129, +}; + +struct saa7127_state { + struct v4l2_subdev sd; + v4l2_std_id std; + enum saa712x_model ident; + enum saa7127_input_type input_type; + enum saa7127_output_type output_type; + int video_enable; + int wss_enable; + u16 wss_mode; + int cc_enable; + u16 cc_data; + int xds_enable; + u16 xds_data; + int vps_enable; + u8 vps_data[5]; + u8 reg_2d; + u8 reg_3a; + u8 reg_3a_cb; /* colorbar bit */ + u8 reg_61; +}; + +static inline struct saa7127_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct saa7127_state, sd); +} + +static const char * const output_strs[] = +{ + "S-Video + Composite", + "Composite", + "S-Video", + "RGB", + "YUV C", + "YUV V" +}; + +static const char * const wss_strs[] = { + "invalid", + "letterbox 14:9 center", + "letterbox 14:9 top", + "invalid", + "letterbox 16:9 top", + "invalid", + "invalid", + "16:9 full format anamorphic", + "4:3 full format", + "invalid", + "invalid", + "letterbox 16:9 center", + "invalid", + "letterbox >16:9 center", + "14:9 full format center", + "invalid", +}; + +/* ----------------------------------------------------------------------- */ + +static int saa7127_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 saa7127_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + int i; + + for (i = 0; i < 3; i++) { + if (i2c_smbus_write_byte_data(client, reg, val) == 0) + return 0; + } + v4l2_err(sd, "I2C Write Problem\n"); + return -1; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_write_inittab(struct v4l2_subdev *sd, + const struct i2c_reg_value *regs) +{ + while (regs->reg != 0) { + saa7127_write(sd, regs->reg, regs->value); + regs++; + } + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_vps(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data) +{ + struct saa7127_state *state = to_state(sd); + int enable = (data->line != 0); + + if (enable && (data->field != 0 || data->line != 16)) + return -EINVAL; + if (state->vps_enable != enable) { + v4l2_dbg(1, debug, sd, "Turn VPS Signal %s\n", enable ? "on" : "off"); + saa7127_write(sd, 0x54, enable << 7); + state->vps_enable = enable; + } + if (!enable) + return 0; + + state->vps_data[0] = data->data[2]; + state->vps_data[1] = data->data[8]; + state->vps_data[2] = data->data[9]; + state->vps_data[3] = data->data[10]; + state->vps_data[4] = data->data[11]; + v4l2_dbg(1, debug, sd, "Set VPS data %*ph\n", 5, state->vps_data); + saa7127_write(sd, 0x55, state->vps_data[0]); + saa7127_write(sd, 0x56, state->vps_data[1]); + saa7127_write(sd, 0x57, state->vps_data[2]); + saa7127_write(sd, 0x58, state->vps_data[3]); + saa7127_write(sd, 0x59, state->vps_data[4]); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_cc(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data) +{ + struct saa7127_state *state = to_state(sd); + u16 cc = data->data[1] << 8 | data->data[0]; + int enable = (data->line != 0); + + if (enable && (data->field != 0 || data->line != 21)) + return -EINVAL; + if (state->cc_enable != enable) { + v4l2_dbg(1, debug, sd, + "Turn CC %s\n", enable ? "on" : "off"); + saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION, + (state->xds_enable << 7) | (enable << 6) | 0x11); + state->cc_enable = enable; + } + if (!enable) + return 0; + + v4l2_dbg(2, debug, sd, "CC data: %04x\n", cc); + saa7127_write(sd, SAA7127_REG_LINE_21_ODD_0, cc & 0xff); + saa7127_write(sd, SAA7127_REG_LINE_21_ODD_1, cc >> 8); + state->cc_data = cc; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_xds(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data) +{ + struct saa7127_state *state = to_state(sd); + u16 xds = data->data[1] << 8 | data->data[0]; + int enable = (data->line != 0); + + if (enable && (data->field != 1 || data->line != 21)) + return -EINVAL; + if (state->xds_enable != enable) { + v4l2_dbg(1, debug, sd, "Turn XDS %s\n", enable ? "on" : "off"); + saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION, + (enable << 7) | (state->cc_enable << 6) | 0x11); + state->xds_enable = enable; + } + if (!enable) + return 0; + + v4l2_dbg(2, debug, sd, "XDS data: %04x\n", xds); + saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff); + saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_1, xds >> 8); + state->xds_data = xds; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_wss(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data) +{ + struct saa7127_state *state = to_state(sd); + int enable = (data->line != 0); + + if (enable && (data->field != 0 || data->line != 23)) + return -EINVAL; + if (state->wss_enable != enable) { + v4l2_dbg(1, debug, sd, "Turn WSS %s\n", enable ? "on" : "off"); + saa7127_write(sd, 0x27, enable << 7); + state->wss_enable = enable; + } + if (!enable) + return 0; + + saa7127_write(sd, 0x26, data->data[0]); + saa7127_write(sd, 0x27, 0x80 | (data->data[1] & 0x3f)); + v4l2_dbg(1, debug, sd, + "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]); + state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0]; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_video_enable(struct v4l2_subdev *sd, int enable) +{ + struct saa7127_state *state = to_state(sd); + + if (enable) { + v4l2_dbg(1, debug, sd, "Enable Video Output\n"); + saa7127_write(sd, 0x2d, state->reg_2d); + saa7127_write(sd, 0x61, state->reg_61); + } else { + v4l2_dbg(1, debug, sd, "Disable Video Output\n"); + saa7127_write(sd, 0x2d, (state->reg_2d & 0xf0)); + saa7127_write(sd, 0x61, (state->reg_61 | 0xc0)); + } + state->video_enable = enable; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_std(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct saa7127_state *state = to_state(sd); + const struct i2c_reg_value *inittab; + + if (std & V4L2_STD_525_60) { + v4l2_dbg(1, debug, sd, "Selecting 60 Hz video Standard\n"); + inittab = saa7127_init_config_60hz; + state->reg_61 = SAA7127_60HZ_DAC_CONTROL; + + } else if (state->ident == SAA7129 && + (std & V4L2_STD_SECAM) && + !(std & (V4L2_STD_625_50 & ~V4L2_STD_SECAM))) { + + /* If and only if SECAM, with a SAA712[89] */ + v4l2_dbg(1, debug, sd, + "Selecting 50 Hz SECAM video Standard\n"); + inittab = saa7127_init_config_50hz_secam; + state->reg_61 = SAA7127_50HZ_SECAM_DAC_CONTROL; + + } else { + v4l2_dbg(1, debug, sd, "Selecting 50 Hz PAL video Standard\n"); + inittab = saa7127_init_config_50hz_pal; + state->reg_61 = SAA7127_50HZ_PAL_DAC_CONTROL; + } + + /* Write Table */ + saa7127_write_inittab(sd, inittab); + state->std = std; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_output_type(struct v4l2_subdev *sd, int output) +{ + struct saa7127_state *state = to_state(sd); + + switch (output) { + case SAA7127_OUTPUT_TYPE_RGB: + state->reg_2d = 0x0f; /* RGB + CVBS (for sync) */ + state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */ + break; + + case SAA7127_OUTPUT_TYPE_COMPOSITE: + if (state->ident == SAA7129) + state->reg_2d = 0x20; /* CVBS only */ + else + state->reg_2d = 0x08; /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */ + state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */ + break; + + case SAA7127_OUTPUT_TYPE_SVIDEO: + if (state->ident == SAA7129) + state->reg_2d = 0x18; /* Y + C */ + else + state->reg_2d = 0xff; /*11111111 croma -> R, luma -> CVBS + G + B */ + state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */ + break; + + case SAA7127_OUTPUT_TYPE_YUV_V: + state->reg_2d = 0x4f; /* reg 2D = 01001111, all DAC's on, RGB + VBS */ + state->reg_3a = 0x0b; /* reg 3A = 00001011, bypass RGB-matrix */ + break; + + case SAA7127_OUTPUT_TYPE_YUV_C: + state->reg_2d = 0x0f; /* reg 2D = 00001111, all DAC's on, RGB + CVBS */ + state->reg_3a = 0x0b; /* reg 3A = 00001011, bypass RGB-matrix */ + break; + + case SAA7127_OUTPUT_TYPE_BOTH: + if (state->ident == SAA7129) + state->reg_2d = 0x38; + else + state->reg_2d = 0xbf; + state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */ + break; + + default: + return -EINVAL; + } + v4l2_dbg(1, debug, sd, + "Selecting %s output type\n", output_strs[output]); + + /* Configure Encoder */ + saa7127_write(sd, 0x2d, state->reg_2d); + saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb); + state->output_type = output; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_set_input_type(struct v4l2_subdev *sd, int input) +{ + struct saa7127_state *state = to_state(sd); + + switch (input) { + case SAA7127_INPUT_TYPE_NORMAL: /* avia */ + v4l2_dbg(1, debug, sd, "Selecting Normal Encoder Input\n"); + state->reg_3a_cb = 0; + break; + + case SAA7127_INPUT_TYPE_TEST_IMAGE: /* color bar */ + v4l2_dbg(1, debug, sd, "Selecting Color Bar generator\n"); + state->reg_3a_cb = 0x80; + break; + + default: + return -EINVAL; + } + saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb); + state->input_type = input; + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct saa7127_state *state = to_state(sd); + + if (state->std == std) + return 0; + return saa7127_set_std(sd, std); +} + +static int saa7127_s_routing(struct v4l2_subdev *sd, + u32 input, u32 output, u32 config) +{ + struct saa7127_state *state = to_state(sd); + int rc = 0; + + if (state->input_type != input) + rc = saa7127_set_input_type(sd, input); + if (rc == 0 && state->output_type != output) + rc = saa7127_set_output_type(sd, output); + return rc; +} + +static int saa7127_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct saa7127_state *state = to_state(sd); + + if (state->video_enable == enable) + return 0; + return saa7127_set_video_enable(sd, enable); +} + +static int saa7127_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt) +{ + struct saa7127_state *state = to_state(sd); + + memset(fmt->service_lines, 0, sizeof(fmt->service_lines)); + if (state->vps_enable) + fmt->service_lines[0][16] = V4L2_SLICED_VPS; + if (state->wss_enable) + fmt->service_lines[0][23] = V4L2_SLICED_WSS_625; + if (state->cc_enable) { + fmt->service_lines[0][21] = V4L2_SLICED_CAPTION_525; + fmt->service_lines[1][21] = V4L2_SLICED_CAPTION_525; + } + fmt->service_set = + (state->vps_enable ? V4L2_SLICED_VPS : 0) | + (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) | + (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0); + return 0; +} + +static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data) +{ + switch (data->id) { + case V4L2_SLICED_WSS_625: + return saa7127_set_wss(sd, data); + case V4L2_SLICED_VPS: + return saa7127_set_vps(sd, data); + case V4L2_SLICED_CAPTION_525: + if (data->field == 0) + return saa7127_set_cc(sd, data); + return saa7127_set_xds(sd, data); + default: + return -EINVAL; + } + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) +{ + reg->val = saa7127_read(sd, reg->reg & 0xff); + reg->size = 1; + return 0; +} + +static int saa7127_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) +{ + saa7127_write(sd, reg->reg & 0xff, reg->val & 0xff); + return 0; +} +#endif + +static int saa7127_log_status(struct v4l2_subdev *sd) +{ + struct saa7127_state *state = to_state(sd); + + v4l2_info(sd, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz"); + v4l2_info(sd, "Input: %s\n", state->input_type ? "color bars" : "normal"); + v4l2_info(sd, "Output: %s\n", state->video_enable ? + output_strs[state->output_type] : "disabled"); + v4l2_info(sd, "WSS: %s\n", state->wss_enable ? + wss_strs[state->wss_mode] : "disabled"); + v4l2_info(sd, "VPS: %s\n", state->vps_enable ? "enabled" : "disabled"); + v4l2_info(sd, "CC: %s\n", state->cc_enable ? "enabled" : "disabled"); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static const struct v4l2_subdev_core_ops saa7127_core_ops = { + .log_status = saa7127_log_status, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = saa7127_g_register, + .s_register = saa7127_s_register, +#endif +}; + +static const struct v4l2_subdev_video_ops saa7127_video_ops = { + .s_std_output = saa7127_s_std_output, + .s_routing = saa7127_s_routing, + .s_stream = saa7127_s_stream, +}; + +static const struct v4l2_subdev_vbi_ops saa7127_vbi_ops = { + .s_vbi_data = saa7127_s_vbi_data, + .g_sliced_fmt = saa7127_g_sliced_fmt, +}; + +static const struct v4l2_subdev_ops saa7127_ops = { + .core = &saa7127_core_ops, + .video = &saa7127_video_ops, + .vbi = &saa7127_vbi_ops, +}; + +/* ----------------------------------------------------------------------- */ + +static int saa7127_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct saa7127_state *state; + struct v4l2_subdev *sd; + struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 }; /* set to disabled */ + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n", + client->addr << 1); + + state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &saa7127_ops); + + /* First test register 0: Bits 5-7 are a version ID (should be 0), + and bit 2 should also be 0. + This is rather general, so the second test is more specific and + looks at the 'ending point of burst in clock cycles' which is + 0x1d after a reset and not expected to ever change. */ + if ((saa7127_read(sd, 0) & 0xe4) != 0 || + (saa7127_read(sd, 0x29) & 0x3f) != 0x1d) { + v4l2_dbg(1, debug, sd, "saa7127 not found\n"); + return -ENODEV; + } + + if (id->driver_data) { /* Chip type is already known */ + state->ident = id->driver_data; + } else { /* Needs detection */ + int read_result; + + /* Detect if it's an saa7129 */ + read_result = saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2); + saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2, 0xaa); + if (saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2) == 0xaa) { + saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2, + read_result); + state->ident = SAA7129; + strlcpy(client->name, "saa7129", I2C_NAME_SIZE); + } else { + state->ident = SAA7127; + strlcpy(client->name, "saa7127", I2C_NAME_SIZE); + } + } + + v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, + client->addr << 1, client->adapter->name); + + v4l2_dbg(1, debug, sd, "Configuring encoder\n"); + saa7127_write_inittab(sd, saa7127_init_config_common); + saa7127_set_std(sd, V4L2_STD_NTSC); + saa7127_set_output_type(sd, SAA7127_OUTPUT_TYPE_BOTH); + saa7127_set_vps(sd, &vbi); + saa7127_set_wss(sd, &vbi); + saa7127_set_cc(sd, &vbi); + saa7127_set_xds(sd, &vbi); + if (test_image == 1) + /* The Encoder has an internal Colorbar generator */ + /* This can be used for debugging */ + saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_TEST_IMAGE); + else + saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_NORMAL); + saa7127_set_video_enable(sd, 1); + + if (state->ident == SAA7129) + saa7127_write_inittab(sd, saa7129_init_config_extra); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int saa7127_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_device_unregister_subdev(sd); + /* Turn off TV output */ + saa7127_set_video_enable(sd, 0); + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static struct i2c_device_id saa7127_id[] = { + { "saa7127_auto", 0 }, /* auto-detection */ + { "saa7126", SAA7127 }, + { "saa7127", SAA7127 }, + { "saa7128", SAA7129 }, + { "saa7129", SAA7129 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, saa7127_id); + +static struct i2c_driver saa7127_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "saa7127", + }, + .probe = saa7127_probe, + .remove = saa7127_remove, + .id_table = saa7127_id, +}; + +module_i2c_driver(saa7127_driver); |