| /* |
| * Driver for the ov9650 sensor |
| * |
| * Copyright (C) 2008 Erik Andrén |
| * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project. |
| * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br> |
| * |
| * Portions of code to USB interface and ALi driver software, |
| * Copyright (c) 2006 Willem Duinker |
| * v4l2 interface modeled after the V4L2 driver |
| * for SN9C10x PC Camera Controllers |
| * |
| * 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, version 2. |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include "m5602_ov9650.h" |
| |
| static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl); |
| static void ov9650_dump_registers(struct sd *sd); |
| |
| /* Vertically and horizontally flips the image if matched, needed for machines |
| where the sensor is mounted upside down */ |
| static |
| const |
| struct dmi_system_id ov9650_flip_dmi_table[] = { |
| { |
| .ident = "ASUS A6Ja", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6J") |
| } |
| }, |
| { |
| .ident = "ASUS A6JC", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6JC") |
| } |
| }, |
| { |
| .ident = "ASUS A6K", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6K") |
| } |
| }, |
| { |
| .ident = "ASUS A6Kt", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt") |
| } |
| }, |
| { |
| .ident = "ASUS A6VA", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6VA") |
| } |
| }, |
| { |
| |
| .ident = "ASUS A6VC", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6VC") |
| } |
| }, |
| { |
| .ident = "ASUS A6VM", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A6VM") |
| } |
| }, |
| { |
| .ident = "ASUS A7V", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A7V") |
| } |
| }, |
| { |
| .ident = "Alienware Aurora m9700", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "alienware"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "Aurora m9700") |
| } |
| }, |
| {} |
| }; |
| |
| static struct v4l2_pix_format ov9650_modes[] = { |
| { |
| 176, |
| 144, |
| V4L2_PIX_FMT_SBGGR8, |
| V4L2_FIELD_NONE, |
| .sizeimage = |
| 176 * 144, |
| .bytesperline = 176, |
| .colorspace = V4L2_COLORSPACE_SRGB, |
| .priv = 9 |
| }, { |
| 320, |
| 240, |
| V4L2_PIX_FMT_SBGGR8, |
| V4L2_FIELD_NONE, |
| .sizeimage = |
| 320 * 240, |
| .bytesperline = 320, |
| .colorspace = V4L2_COLORSPACE_SRGB, |
| .priv = 8 |
| }, { |
| 352, |
| 288, |
| V4L2_PIX_FMT_SBGGR8, |
| V4L2_FIELD_NONE, |
| .sizeimage = |
| 352 * 288, |
| .bytesperline = 352, |
| .colorspace = V4L2_COLORSPACE_SRGB, |
| .priv = 9 |
| }, { |
| 640, |
| 480, |
| V4L2_PIX_FMT_SBGGR8, |
| V4L2_FIELD_NONE, |
| .sizeimage = |
| 640 * 480, |
| .bytesperline = 640, |
| .colorspace = V4L2_COLORSPACE_SRGB, |
| .priv = 9 |
| } |
| }; |
| |
| static const struct v4l2_ctrl_ops ov9650_ctrl_ops = { |
| .s_ctrl = ov9650_s_ctrl, |
| }; |
| |
| int ov9650_probe(struct sd *sd) |
| { |
| int err = 0; |
| u8 prod_id = 0, ver_id = 0, i; |
| struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; |
| |
| if (force_sensor) { |
| if (force_sensor == OV9650_SENSOR) { |
| pr_info("Forcing an %s sensor\n", ov9650.name); |
| goto sensor_found; |
| } |
| /* If we want to force another sensor, |
| don't try to probe this one */ |
| return -ENODEV; |
| } |
| |
| PDEBUG(D_PROBE, "Probing for an ov9650 sensor"); |
| |
| /* Run the pre-init before probing the sensor */ |
| for (i = 0; i < ARRAY_SIZE(preinit_ov9650) && !err; i++) { |
| u8 data = preinit_ov9650[i][2]; |
| if (preinit_ov9650[i][0] == SENSOR) |
| err = m5602_write_sensor(sd, |
| preinit_ov9650[i][1], &data, 1); |
| else |
| err = m5602_write_bridge(sd, |
| preinit_ov9650[i][1], data); |
| } |
| |
| if (err < 0) |
| return err; |
| |
| if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1)) |
| return -ENODEV; |
| |
| if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1)) |
| return -ENODEV; |
| |
| if ((prod_id == 0x96) && (ver_id == 0x52)) { |
| pr_info("Detected an ov9650 sensor\n"); |
| goto sensor_found; |
| } |
| return -ENODEV; |
| |
| sensor_found: |
| sd->gspca_dev.cam.cam_mode = ov9650_modes; |
| sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes); |
| |
| return 0; |
| } |
| |
| int ov9650_init(struct sd *sd) |
| { |
| int i, err = 0; |
| u8 data; |
| |
| if (dump_sensor) |
| ov9650_dump_registers(sd); |
| |
| for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) { |
| data = init_ov9650[i][2]; |
| if (init_ov9650[i][0] == SENSOR) |
| err = m5602_write_sensor(sd, init_ov9650[i][1], |
| &data, 1); |
| else |
| err = m5602_write_bridge(sd, init_ov9650[i][1], data); |
| } |
| |
| return 0; |
| } |
| |
| int ov9650_init_controls(struct sd *sd) |
| { |
| struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler; |
| |
| sd->gspca_dev.vdev.ctrl_handler = hdl; |
| v4l2_ctrl_handler_init(hdl, 9); |
| |
| sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, |
| V4L2_CID_AUTO_WHITE_BALANCE, |
| 0, 1, 1, 1); |
| sd->red_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, |
| V4L2_CID_RED_BALANCE, 0, 255, 1, |
| RED_GAIN_DEFAULT); |
| sd->blue_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, |
| V4L2_CID_BLUE_BALANCE, 0, 255, 1, |
| BLUE_GAIN_DEFAULT); |
| |
| sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &ov9650_ctrl_ops, |
| V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_AUTO); |
| sd->expo = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_EXPOSURE, |
| 0, 0x1ff, 4, EXPOSURE_DEFAULT); |
| |
| sd->autogain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, |
| V4L2_CID_AUTOGAIN, 0, 1, 1, 1); |
| sd->gain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_GAIN, 0, |
| 0x3ff, 1, GAIN_DEFAULT); |
| |
| sd->hflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_HFLIP, |
| 0, 1, 1, 0); |
| sd->vflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_VFLIP, |
| 0, 1, 1, 0); |
| |
| if (hdl->error) { |
| pr_err("Could not initialize controls\n"); |
| return hdl->error; |
| } |
| |
| v4l2_ctrl_auto_cluster(3, &sd->auto_white_bal, 0, false); |
| v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false); |
| v4l2_ctrl_auto_cluster(2, &sd->autogain, 0, false); |
| v4l2_ctrl_cluster(2, &sd->hflip); |
| |
| return 0; |
| } |
| |
| int ov9650_start(struct sd *sd) |
| { |
| u8 data; |
| int i, err = 0; |
| struct cam *cam = &sd->gspca_dev.cam; |
| |
| int width = cam->cam_mode[sd->gspca_dev.curr_mode].width; |
| int height = cam->cam_mode[sd->gspca_dev.curr_mode].height; |
| int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv; |
| int hor_offs = OV9650_LEFT_OFFSET; |
| struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; |
| |
| if ((!dmi_check_system(ov9650_flip_dmi_table) && |
| sd->vflip->val) || |
| (dmi_check_system(ov9650_flip_dmi_table) && |
| !sd->vflip->val)) |
| ver_offs--; |
| |
| if (width <= 320) |
| hor_offs /= 2; |
| |
| /* Synthesize the vsync/hsync setup */ |
| for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) { |
| if (res_init_ov9650[i][0] == BRIDGE) |
| err = m5602_write_bridge(sd, res_init_ov9650[i][1], |
| res_init_ov9650[i][2]); |
| else if (res_init_ov9650[i][0] == SENSOR) { |
| data = res_init_ov9650[i][2]; |
| err = m5602_write_sensor(sd, |
| res_init_ov9650[i][1], &data, 1); |
| } |
| } |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, |
| ((ver_offs >> 8) & 0xff)); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff)); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff)); |
| if (err < 0) |
| return err; |
| |
| for (i = 0; i < 2 && !err; i++) |
| err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, |
| (hor_offs >> 8) & 0xff); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, hor_offs & 0xff); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, |
| ((width + hor_offs) >> 8) & 0xff); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, |
| ((width + hor_offs) & 0xff)); |
| if (err < 0) |
| return err; |
| |
| err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); |
| if (err < 0) |
| return err; |
| |
| switch (width) { |
| case 640: |
| PDEBUG(D_CONF, "Configuring camera for VGA mode"); |
| |
| data = OV9650_VGA_SELECT | OV9650_RGB_SELECT | |
| OV9650_RAW_RGB_SELECT; |
| err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); |
| break; |
| |
| case 352: |
| PDEBUG(D_CONF, "Configuring camera for CIF mode"); |
| |
| data = OV9650_CIF_SELECT | OV9650_RGB_SELECT | |
| OV9650_RAW_RGB_SELECT; |
| err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); |
| break; |
| |
| case 320: |
| PDEBUG(D_CONF, "Configuring camera for QVGA mode"); |
| |
| data = OV9650_QVGA_SELECT | OV9650_RGB_SELECT | |
| OV9650_RAW_RGB_SELECT; |
| err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); |
| break; |
| |
| case 176: |
| PDEBUG(D_CONF, "Configuring camera for QCIF mode"); |
| |
| data = OV9650_QCIF_SELECT | OV9650_RGB_SELECT | |
| OV9650_RAW_RGB_SELECT; |
| err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); |
| break; |
| } |
| return err; |
| } |
| |
| int ov9650_stop(struct sd *sd) |
| { |
| u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X; |
| return m5602_write_sensor(sd, OV9650_COM2, &data, 1); |
| } |
| |
| void ov9650_disconnect(struct sd *sd) |
| { |
| ov9650_stop(sd); |
| |
| sd->sensor = NULL; |
| } |
| |
| static int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| PDEBUG(D_CONF, "Set exposure to %d", val); |
| |
| /* The 6 MSBs */ |
| i2c_data = (val >> 10) & 0x3f; |
| err = m5602_write_sensor(sd, OV9650_AECHM, |
| &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| /* The 8 middle bits */ |
| i2c_data = (val >> 2) & 0xff; |
| err = m5602_write_sensor(sd, OV9650_AECH, |
| &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| /* The 2 LSBs */ |
| i2c_data = val & 0x03; |
| err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1); |
| return err; |
| } |
| |
| static int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Setting gain to %d", val); |
| |
| /* The 2 MSB */ |
| /* Read the OV9650_VREF register first to avoid |
| corrupting the VREF high and low bits */ |
| err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| /* Mask away all uninteresting bits */ |
| i2c_data = ((val & 0x0300) >> 2) | |
| (i2c_data & 0x3f); |
| err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| /* The 8 LSBs */ |
| i2c_data = val & 0xff; |
| err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1); |
| return err; |
| } |
| |
| static int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Set red gain to %d", val); |
| |
| i2c_data = val & 0xff; |
| err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1); |
| return err; |
| } |
| |
| static int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Set blue gain to %d", val); |
| |
| i2c_data = val & 0xff; |
| err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1); |
| return err; |
| } |
| |
| static int ov9650_set_hvflip(struct gspca_dev *gspca_dev) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| int hflip = sd->hflip->val; |
| int vflip = sd->vflip->val; |
| |
| PDEBUG(D_CONF, "Set hvflip to %d %d", hflip, vflip); |
| |
| if (dmi_check_system(ov9650_flip_dmi_table)) |
| vflip = !vflip; |
| |
| i2c_data = (hflip << 5) | (vflip << 4); |
| err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| /* When vflip is toggled we need to readjust the bridge hsync/vsync */ |
| if (gspca_dev->streaming) |
| err = ov9650_start(sd); |
| |
| return err; |
| } |
| |
| static int ov9650_set_auto_exposure(struct gspca_dev *gspca_dev, |
| __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Set auto exposure control to %d", val); |
| |
| err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| val = (val == V4L2_EXPOSURE_AUTO); |
| i2c_data = ((i2c_data & 0xfe) | ((val & 0x01) << 0)); |
| |
| return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| } |
| |
| static int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, |
| __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Set auto white balance to %d", val); |
| |
| err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1)); |
| err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| |
| return err; |
| } |
| |
| static int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| int err; |
| u8 i2c_data; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| PDEBUG(D_CONF, "Set auto gain control to %d", val); |
| |
| err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| if (err < 0) |
| return err; |
| |
| i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2)); |
| |
| return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); |
| } |
| |
| static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct gspca_dev *gspca_dev = |
| container_of(ctrl->handler, struct gspca_dev, ctrl_handler); |
| struct sd *sd = (struct sd *) gspca_dev; |
| int err; |
| |
| if (!gspca_dev->streaming) |
| return 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_AUTO_WHITE_BALANCE: |
| err = ov9650_set_auto_white_balance(gspca_dev, ctrl->val); |
| if (err || ctrl->val) |
| return err; |
| err = ov9650_set_red_balance(gspca_dev, sd->red_bal->val); |
| if (err) |
| return err; |
| err = ov9650_set_blue_balance(gspca_dev, sd->blue_bal->val); |
| break; |
| case V4L2_CID_EXPOSURE_AUTO: |
| err = ov9650_set_auto_exposure(gspca_dev, ctrl->val); |
| if (err || ctrl->val == V4L2_EXPOSURE_AUTO) |
| return err; |
| err = ov9650_set_exposure(gspca_dev, sd->expo->val); |
| break; |
| case V4L2_CID_AUTOGAIN: |
| err = ov9650_set_auto_gain(gspca_dev, ctrl->val); |
| if (err || ctrl->val) |
| return err; |
| err = ov9650_set_gain(gspca_dev, sd->gain->val); |
| break; |
| case V4L2_CID_HFLIP: |
| err = ov9650_set_hvflip(gspca_dev); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return err; |
| } |
| |
| static void ov9650_dump_registers(struct sd *sd) |
| { |
| int address; |
| pr_info("Dumping the ov9650 register state\n"); |
| for (address = 0; address < 0xa9; address++) { |
| u8 value; |
| m5602_read_sensor(sd, address, &value, 1); |
| pr_info("register 0x%x contains 0x%x\n", address, value); |
| } |
| |
| pr_info("ov9650 register state dump complete\n"); |
| |
| pr_info("Probing for which registers that are read/write\n"); |
| for (address = 0; address < 0xff; address++) { |
| u8 old_value, ctrl_value; |
| u8 test_value[2] = {0xff, 0xff}; |
| |
| m5602_read_sensor(sd, address, &old_value, 1); |
| m5602_write_sensor(sd, address, test_value, 1); |
| m5602_read_sensor(sd, address, &ctrl_value, 1); |
| |
| if (ctrl_value == test_value[0]) |
| pr_info("register 0x%x is writeable\n", address); |
| else |
| pr_info("register 0x%x is read only\n", address); |
| |
| /* Restore original value */ |
| m5602_write_sensor(sd, address, &old_value, 1); |
| } |
| } |
