diff options
Diffstat (limited to 'drivers/media/usb/gspca/m5602/m5602_ov9650.c')
| -rw-r--r-- | drivers/media/usb/gspca/m5602/m5602_ov9650.c | 636 |
1 files changed, 636 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/m5602/m5602_ov9650.c b/drivers/media/usb/gspca/m5602/m5602_ov9650.c new file mode 100644 index 0000000..59bc62b --- /dev/null +++ b/drivers/media/usb/gspca/m5602/m5602_ov9650.c @@ -0,0 +1,636 @@ +/* + * 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); + } +} |