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610 lines
14 KiB
610 lines
14 KiB
/*
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* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
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* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
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* Copyright (c) 2002, 2003 Tuukka Toivonen
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* Copyright (c) 2008 Erik Andrén
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* Copyright (c) 2008 Chia-I Wu
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* P/N 861037: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
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* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
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* P/N 861075-0040: Sensor HDCS1000 ASIC
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* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
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* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
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*/
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#include "stv06xx_hdcs.h"
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static const struct ctrl hdcs1x00_ctrl[] = {
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{
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{
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.id = V4L2_CID_EXPOSURE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "exposure",
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.minimum = 0x00,
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.maximum = 0xff,
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.step = 0x1,
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.default_value = HDCS_DEFAULT_EXPOSURE,
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.flags = V4L2_CTRL_FLAG_SLIDER
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},
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.set = hdcs_set_exposure,
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.get = hdcs_get_exposure
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}, {
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "gain",
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.minimum = 0x00,
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.maximum = 0xff,
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.step = 0x1,
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.default_value = HDCS_DEFAULT_GAIN,
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.flags = V4L2_CTRL_FLAG_SLIDER
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},
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.set = hdcs_set_gain,
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.get = hdcs_get_gain
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}
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};
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static struct v4l2_pix_format hdcs1x00_mode[] = {
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{
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HDCS_1X00_DEF_WIDTH,
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HDCS_1X00_DEF_HEIGHT,
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V4L2_PIX_FMT_SGRBG8,
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V4L2_FIELD_NONE,
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.sizeimage =
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HDCS_1X00_DEF_WIDTH * HDCS_1X00_DEF_HEIGHT,
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.bytesperline = HDCS_1X00_DEF_WIDTH,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 1
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}
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};
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static const struct ctrl hdcs1020_ctrl[] = {
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{
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{
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.id = V4L2_CID_EXPOSURE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "exposure",
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.minimum = 0x00,
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.maximum = 0xffff,
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.step = 0x1,
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.default_value = HDCS_DEFAULT_EXPOSURE,
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.flags = V4L2_CTRL_FLAG_SLIDER
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},
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.set = hdcs_set_exposure,
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.get = hdcs_get_exposure
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}, {
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "gain",
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.minimum = 0x00,
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.maximum = 0xff,
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.step = 0x1,
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.default_value = HDCS_DEFAULT_GAIN,
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.flags = V4L2_CTRL_FLAG_SLIDER
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},
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.set = hdcs_set_gain,
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.get = hdcs_get_gain
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}
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};
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static struct v4l2_pix_format hdcs1020_mode[] = {
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{
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HDCS_1020_DEF_WIDTH,
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HDCS_1020_DEF_HEIGHT,
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V4L2_PIX_FMT_SGRBG8,
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V4L2_FIELD_NONE,
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.sizeimage =
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HDCS_1020_DEF_WIDTH * HDCS_1020_DEF_HEIGHT,
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.bytesperline = HDCS_1020_DEF_WIDTH,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 1
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}
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};
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enum hdcs_power_state {
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HDCS_STATE_SLEEP,
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HDCS_STATE_IDLE,
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HDCS_STATE_RUN
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};
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/* no lock? */
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struct hdcs {
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enum hdcs_power_state state;
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int w, h;
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/* visible area of the sensor array */
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struct {
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int left, top;
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int width, height;
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int border;
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} array;
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struct {
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/* Column timing overhead */
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u8 cto;
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/* Column processing overhead */
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u8 cpo;
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/* Row sample period constant */
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u16 rs;
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/* Exposure reset duration */
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u16 er;
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} exp;
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int psmp;
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u8 exp_cache, gain_cache;
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};
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static int hdcs_reg_write_seq(struct sd *sd, u8 reg, u8 *vals, u8 len)
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{
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u8 regs[I2C_MAX_BYTES * 2];
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int i;
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if (unlikely((len <= 0) || (len >= I2C_MAX_BYTES) ||
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(reg + len > 0xff)))
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return -EINVAL;
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for (i = 0; i < len; i++) {
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regs[2 * i] = reg;
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regs[2 * i + 1] = vals[i];
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/* All addresses are shifted left one bit as bit 0 toggles r/w */
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reg += 2;
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}
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return stv06xx_write_sensor_bytes(sd, regs, len);
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}
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static int hdcs_set_state(struct sd *sd, enum hdcs_power_state state)
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{
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struct hdcs *hdcs = sd->sensor_priv;
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u8 val;
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int ret;
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if (hdcs->state == state)
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return 0;
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/* we need to go idle before running or sleeping */
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if (hdcs->state != HDCS_STATE_IDLE) {
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ret = stv06xx_write_sensor(sd, HDCS_REG_CONTROL(sd), 0);
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if (ret)
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return ret;
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}
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hdcs->state = HDCS_STATE_IDLE;
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if (state == HDCS_STATE_IDLE)
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return 0;
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switch (state) {
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case HDCS_STATE_SLEEP:
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val = HDCS_SLEEP_MODE;
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break;
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case HDCS_STATE_RUN:
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val = HDCS_RUN_ENABLE;
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break;
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default:
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return -EINVAL;
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}
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ret = stv06xx_write_sensor(sd, HDCS_REG_CONTROL(sd), val);
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/* Update the state if the write succeeded */
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if (!ret)
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hdcs->state = state;
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return ret;
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}
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static int hdcs_reset(struct sd *sd)
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{
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struct hdcs *hdcs = sd->sensor_priv;
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int err;
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err = stv06xx_write_sensor(sd, HDCS_REG_CONTROL(sd), 1);
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if (err < 0)
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return err;
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err = stv06xx_write_sensor(sd, HDCS_REG_CONTROL(sd), 0);
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if (err < 0)
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hdcs->state = HDCS_STATE_IDLE;
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return err;
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}
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static int hdcs_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct hdcs *hdcs = sd->sensor_priv;
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*val = hdcs->exp_cache;
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return 0;
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}
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static int hdcs_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct hdcs *hdcs = sd->sensor_priv;
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int rowexp, srowexp;
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int max_srowexp;
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/* Column time period */
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int ct;
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/* Column processing period */
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int cp;
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/* Row processing period */
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int rp;
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/* Minimum number of column timing periods
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within the column processing period */
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int mnct;
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int cycles, err;
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u8 exp[14];
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val &= 0xff;
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hdcs->exp_cache = val;
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cycles = val * HDCS_CLK_FREQ_MHZ * 257;
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ct = hdcs->exp.cto + hdcs->psmp + (HDCS_ADC_START_SIG_DUR + 2);
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cp = hdcs->exp.cto + (hdcs->w * ct / 2);
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/* the cycles one row takes */
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rp = hdcs->exp.rs + cp;
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rowexp = cycles / rp;
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/* the remaining cycles */
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cycles -= rowexp * rp;
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/* calculate sub-row exposure */
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if (IS_1020(sd)) {
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/* see HDCS-1020 datasheet 3.5.6.4, p. 63 */
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srowexp = hdcs->w - (cycles + hdcs->exp.er + 13) / ct;
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mnct = (hdcs->exp.er + 12 + ct - 1) / ct;
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max_srowexp = hdcs->w - mnct;
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} else {
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/* see HDCS-1000 datasheet 3.4.5.5, p. 61 */
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srowexp = cp - hdcs->exp.er - 6 - cycles;
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mnct = (hdcs->exp.er + 5 + ct - 1) / ct;
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max_srowexp = cp - mnct * ct - 1;
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}
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if (srowexp < 0)
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srowexp = 0;
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else if (srowexp > max_srowexp)
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srowexp = max_srowexp;
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if (IS_1020(sd)) {
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exp[0] = HDCS20_CONTROL;
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exp[1] = 0x00; /* Stop streaming */
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exp[2] = HDCS_ROWEXPL;
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exp[3] = rowexp & 0xff;
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exp[4] = HDCS_ROWEXPH;
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exp[5] = rowexp >> 8;
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exp[6] = HDCS20_SROWEXP;
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exp[7] = (srowexp >> 2) & 0xff;
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exp[8] = HDCS20_ERROR;
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exp[9] = 0x10; /* Clear exposure error flag*/
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exp[10] = HDCS20_CONTROL;
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exp[11] = 0x04; /* Restart streaming */
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err = stv06xx_write_sensor_bytes(sd, exp, 6);
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} else {
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exp[0] = HDCS00_CONTROL;
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exp[1] = 0x00; /* Stop streaming */
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exp[2] = HDCS_ROWEXPL;
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exp[3] = rowexp & 0xff;
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exp[4] = HDCS_ROWEXPH;
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exp[5] = rowexp >> 8;
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exp[6] = HDCS00_SROWEXPL;
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exp[7] = srowexp & 0xff;
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exp[8] = HDCS00_SROWEXPH;
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exp[9] = srowexp >> 8;
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exp[10] = HDCS_STATUS;
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exp[11] = 0x10; /* Clear exposure error flag*/
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exp[12] = HDCS00_CONTROL;
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exp[13] = 0x04; /* Restart streaming */
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err = stv06xx_write_sensor_bytes(sd, exp, 7);
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if (err < 0)
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return err;
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}
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PDEBUG(D_V4L2, "Writing exposure %d, rowexp %d, srowexp %d",
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val, rowexp, srowexp);
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return err;
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}
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static int hdcs_set_gains(struct sd *sd, u8 g)
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{
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struct hdcs *hdcs = sd->sensor_priv;
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int err;
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u8 gains[4];
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hdcs->gain_cache = g;
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/* the voltage gain Av = (1 + 19 * val / 127) * (1 + bit7) */
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if (g > 127)
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g = 0x80 | (g / 2);
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gains[0] = g;
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gains[1] = g;
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gains[2] = g;
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gains[3] = g;
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err = hdcs_reg_write_seq(sd, HDCS_ERECPGA, gains, 4);
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return err;
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}
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static int hdcs_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct hdcs *hdcs = sd->sensor_priv;
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*val = hdcs->gain_cache;
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return 0;
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}
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static int hdcs_set_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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PDEBUG(D_V4L2, "Writing gain %d", val);
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return hdcs_set_gains((struct sd *) gspca_dev,
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val & 0xff);
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}
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static int hdcs_set_size(struct sd *sd,
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unsigned int width, unsigned int height)
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{
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struct hdcs *hdcs = sd->sensor_priv;
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u8 win[4];
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unsigned int x, y;
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int err;
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/* must be multiple of 4 */
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width = (width + 3) & ~0x3;
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height = (height + 3) & ~0x3;
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if (width > hdcs->array.width)
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width = hdcs->array.width;
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if (IS_1020(sd)) {
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/* the borders are also invalid */
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if (height + 2 * hdcs->array.border + HDCS_1020_BOTTOM_Y_SKIP
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> hdcs->array.height)
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height = hdcs->array.height - 2 * hdcs->array.border -
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HDCS_1020_BOTTOM_Y_SKIP;
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y = (hdcs->array.height - HDCS_1020_BOTTOM_Y_SKIP - height) / 2
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+ hdcs->array.top;
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} else {
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if (height > hdcs->array.height)
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height = hdcs->array.height;
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y = hdcs->array.top + (hdcs->array.height - height) / 2;
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}
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x = hdcs->array.left + (hdcs->array.width - width) / 2;
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win[0] = y / 4;
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win[1] = x / 4;
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win[2] = (y + height) / 4 - 1;
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win[3] = (x + width) / 4 - 1;
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err = hdcs_reg_write_seq(sd, HDCS_FWROW, win, 4);
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if (err < 0)
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return err;
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/* Update the current width and height */
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hdcs->w = width;
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hdcs->h = height;
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return err;
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}
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static int hdcs_probe_1x00(struct sd *sd)
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{
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struct hdcs *hdcs;
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u16 sensor;
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int ret;
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ret = stv06xx_read_sensor(sd, HDCS_IDENT, &sensor);
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if (ret < 0 || sensor != 0x08)
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return -ENODEV;
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info("HDCS-1000/1100 sensor detected");
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sd->gspca_dev.cam.cam_mode = hdcs1x00_mode;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(hdcs1x00_mode);
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sd->desc.ctrls = hdcs1x00_ctrl;
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sd->desc.nctrls = ARRAY_SIZE(hdcs1x00_ctrl);
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hdcs = kmalloc(sizeof(struct hdcs), GFP_KERNEL);
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if (!hdcs)
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return -ENOMEM;
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hdcs->array.left = 8;
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hdcs->array.top = 8;
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hdcs->array.width = HDCS_1X00_DEF_WIDTH;
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hdcs->array.height = HDCS_1X00_DEF_HEIGHT;
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hdcs->array.border = 4;
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hdcs->exp.cto = 4;
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hdcs->exp.cpo = 2;
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hdcs->exp.rs = 186;
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hdcs->exp.er = 100;
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/*
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* Frame rate on HDCS-1000 with STV600 depends on PSMP:
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* 4 = doesn't work at all
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* 5 = 7.8 fps,
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* 6 = 6.9 fps,
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* 8 = 6.3 fps,
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* 10 = 5.5 fps,
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* 15 = 4.4 fps,
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* 31 = 2.8 fps
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*
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* Frame rate on HDCS-1000 with STV602 depends on PSMP:
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* 15 = doesn't work at all
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* 18 = doesn't work at all
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* 19 = 7.3 fps
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* 20 = 7.4 fps
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* 21 = 7.4 fps
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* 22 = 7.4 fps
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* 24 = 6.3 fps
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* 30 = 5.4 fps
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*/
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hdcs->psmp = (sd->bridge == BRIDGE_STV602) ? 20 : 5;
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sd->sensor_priv = hdcs;
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return 0;
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}
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static int hdcs_probe_1020(struct sd *sd)
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{
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struct hdcs *hdcs;
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u16 sensor;
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int ret;
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ret = stv06xx_read_sensor(sd, HDCS_IDENT, &sensor);
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if (ret < 0 || sensor != 0x10)
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return -ENODEV;
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info("HDCS-1020 sensor detected");
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sd->gspca_dev.cam.cam_mode = hdcs1020_mode;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(hdcs1020_mode);
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sd->desc.ctrls = hdcs1020_ctrl;
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sd->desc.nctrls = ARRAY_SIZE(hdcs1020_ctrl);
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hdcs = kmalloc(sizeof(struct hdcs), GFP_KERNEL);
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if (!hdcs)
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return -ENOMEM;
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/*
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* From Andrey's test image: looks like HDCS-1020 upper-left
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* visible pixel is at 24,8 (y maybe even smaller?) and lower-right
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* visible pixel at 375,299 (x maybe even larger?)
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*/
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hdcs->array.left = 24;
|
|
hdcs->array.top = 4;
|
|
hdcs->array.width = HDCS_1020_DEF_WIDTH;
|
|
hdcs->array.height = 304;
|
|
hdcs->array.border = 4;
|
|
|
|
hdcs->psmp = 6;
|
|
|
|
hdcs->exp.cto = 3;
|
|
hdcs->exp.cpo = 3;
|
|
hdcs->exp.rs = 155;
|
|
hdcs->exp.er = 96;
|
|
|
|
sd->sensor_priv = hdcs;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hdcs_start(struct sd *sd)
|
|
{
|
|
PDEBUG(D_STREAM, "Starting stream");
|
|
|
|
return hdcs_set_state(sd, HDCS_STATE_RUN);
|
|
}
|
|
|
|
static int hdcs_stop(struct sd *sd)
|
|
{
|
|
PDEBUG(D_STREAM, "Halting stream");
|
|
|
|
return hdcs_set_state(sd, HDCS_STATE_SLEEP);
|
|
}
|
|
|
|
static void hdcs_disconnect(struct sd *sd)
|
|
{
|
|
PDEBUG(D_PROBE, "Disconnecting the sensor");
|
|
kfree(sd->sensor_priv);
|
|
}
|
|
|
|
static int hdcs_init(struct sd *sd)
|
|
{
|
|
struct hdcs *hdcs = sd->sensor_priv;
|
|
int i, err = 0;
|
|
|
|
/* Set the STV0602AA in STV0600 emulation mode */
|
|
if (sd->bridge == BRIDGE_STV602)
|
|
stv06xx_write_bridge(sd, STV_STV0600_EMULATION, 1);
|
|
|
|
/* Execute the bridge init */
|
|
for (i = 0; i < ARRAY_SIZE(stv_bridge_init) && !err; i++) {
|
|
err = stv06xx_write_bridge(sd, stv_bridge_init[i][0],
|
|
stv_bridge_init[i][1]);
|
|
}
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* sensor soft reset */
|
|
hdcs_reset(sd);
|
|
|
|
/* Execute the sensor init */
|
|
for (i = 0; i < ARRAY_SIZE(stv_sensor_init) && !err; i++) {
|
|
err = stv06xx_write_sensor(sd, stv_sensor_init[i][0],
|
|
stv_sensor_init[i][1]);
|
|
}
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Enable continous frame capture, bit 2: stop when frame complete */
|
|
err = stv06xx_write_sensor(sd, HDCS_REG_CONFIG(sd), BIT(3));
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Set PGA sample duration
|
|
(was 0x7E for the STV602, but caused slow framerate with HDCS-1020) */
|
|
if (IS_1020(sd))
|
|
err = stv06xx_write_sensor(sd, HDCS_TCTRL,
|
|
(HDCS_ADC_START_SIG_DUR << 6) | hdcs->psmp);
|
|
else
|
|
err = stv06xx_write_sensor(sd, HDCS_TCTRL,
|
|
(HDCS_ADC_START_SIG_DUR << 5) | hdcs->psmp);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = hdcs_set_gains(sd, HDCS_DEFAULT_GAIN);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = hdcs_set_size(sd, hdcs->array.width, hdcs->array.height);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = hdcs_set_exposure(&sd->gspca_dev, HDCS_DEFAULT_EXPOSURE);
|
|
return err;
|
|
}
|
|
|
|
static int hdcs_dump(struct sd *sd)
|
|
{
|
|
u16 reg, val;
|
|
|
|
info("Dumping sensor registers:");
|
|
|
|
for (reg = HDCS_IDENT; reg <= HDCS_ROWEXPH; reg++) {
|
|
stv06xx_read_sensor(sd, reg, &val);
|
|
info("reg 0x%02x = 0x%02x", reg, val);
|
|
}
|
|
return 0;
|
|
}
|
|
|