From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- .../media/video/wmt_v4l2/sensors/ov7675/ov7675.c | 321 +++++++++++++++++++++ 1 file changed, 321 insertions(+) create mode 100755 drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c (limited to 'drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c') diff --git a/drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c b/drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c new file mode 100755 index 00000000..89b72f9e --- /dev/null +++ b/drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c @@ -0,0 +1,321 @@ +#include "../cmos-subdev.h" +#include "../../wmt-vid.h" +#include "ov7675.h" + +#define sensor_write_array(sd, arr, sz) \ + cmos_init_8bit_addr(arr, sz, (sd)->i2c_addr) + +#define sensor_read(sd, reg) \ + wmt_vid_i2c_read(sd->i2c_addr, reg) + +#define sensor_write(sd, reg, val) \ + wmt_vid_i2c_write(sd->i2c_addr, reg, val) + +struct cmos_win_size { + char *name; + int width; + int height; + uint8_t *regs; + size_t size; +}; + +#define CMOS_WIN_SIZE(n, w, h, r) \ + {.name = n, .width = w , .height = h, .regs = r, .size = ARRAY_SIZE(r) } + +static const struct cmos_win_size cmos_supported_win_sizes[] = { +// CMOS_WIN_SIZE("QVGA", 320, 240, ov7675_320x240), + CMOS_WIN_SIZE("VGA", 640, 480, ov7675_640x480), +}; + +static const struct cmos_win_size *cmos_select_win(u32 *width, u32 *height) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(cmos_supported_win_sizes); i++) { + if (cmos_supported_win_sizes[i].width == *width && + cmos_supported_win_sizes[i].height == *height) { + *width = cmos_supported_win_sizes[i].width; + *height = cmos_supported_win_sizes[i].height; + return &cmos_supported_win_sizes[i]; + } + } + return NULL; +} + +static int sensor_s_wb(struct cmos_subdev *sd, enum v4l2_wb_mode value) +{ + uint8_t *regs; + size_t size; + + switch (value) { + case WHITE_BALANCE_AUTO: + regs = ov7675_wb_auto; + size = ARRAY_SIZE(ov7675_wb_auto); + break; + case WHITE_BALANCE_INCANDESCENCE: + regs = ov7675_wb_incandescent; + size = ARRAY_SIZE(ov7675_wb_incandescent); + break; + case WHITE_BALANCE_DAYLIGHT: + regs = ov7675_wb_daylight; + size = ARRAY_SIZE(ov7675_wb_daylight); + break; + case WHITE_BALANCE_CLOUDY: + regs = ov7675_wb_cloudy; + size = ARRAY_SIZE(ov7675_wb_cloudy); + break; + case WHITE_BALANCE_FLUORESCENT: + regs = ov7675_wb_fluorescent; + size = ARRAY_SIZE(ov7675_wb_fluorescent); + break; + default: + return -EINVAL; + } + + sensor_write_array(sd, regs, size); + return 0; +} + +static int sensor_s_scenemode(struct cmos_subdev *sd, enum v4l2_scene_mode value) +{ + uint8_t *regs; + size_t size; + + switch (value) { + case SCENE_MODE_AUTO: + regs = ov7675_scene_mode_auto; + size = ARRAY_SIZE(ov7675_scene_mode_auto); + break; + case SCENE_MODE_NIGHTSHOT: + regs = ov7675_scene_mode_night; + size = ARRAY_SIZE(ov7675_scene_mode_night); + break; + default: + return -EINVAL; + } + + sensor_write_array(sd, regs, size); + return 0; +} + +static int sensor_s_exposure(struct cmos_subdev *sd, int value) +{ + uint8_t *regs; + size_t size; + + switch (value) { + case -2: + regs = ov7675_exposure_neg6; + size = ARRAY_SIZE(ov7675_exposure_neg6); + break; + case -1: + regs = ov7675_exposure_neg3; + size = ARRAY_SIZE(ov7675_exposure_neg3); + break; + case 0: + regs = ov7675_exposure_zero; + size = ARRAY_SIZE(ov7675_exposure_zero); + break; + case 1: + regs = ov7675_exposure_pos3; + size = ARRAY_SIZE(ov7675_exposure_pos3); + break; + case 2: + regs = ov7675_exposure_pos6; + size = ARRAY_SIZE(ov7675_exposure_pos6); + break; + default: + return -EINVAL; + } + + sensor_write_array(sd, regs, size); + return 0; +} + +static int sensor_s_hflip(struct cmos_subdev *sd, int value) +{ + uint8_t data; + + data = sensor_read(sd, 0x1e); + + switch (value) { + case 0: + data &= ~0x20; + break; + case 1: + data |= 0x20; + break; + default: + return -EINVAL; + } + + sensor_write(sd, 0x1e, data); + msleep(20); + + return 0; +} + +static int sensor_s_vflip(struct cmos_subdev *sd, int value) +{ + uint8_t data; + + data = sensor_read(sd, 0x1e); + + switch (value) { + case 0: + data &= ~0x10; + break; + case 1: + data |= 0x10; + break; + default: + return -EINVAL; + } + + sensor_write(sd, 0x1e, data); + msleep(20); + return 0; +} + +static int sensor_queryctrl(struct cmos_subdev *sd, struct v4l2_queryctrl *qc) +{ + switch (qc->id) { + case V4L2_CID_VFLIP: + case V4L2_CID_HFLIP: + return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0); + case V4L2_CID_CAMERA_SCENE_MODE: + return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0); + case V4L2_CID_DO_WHITE_BALANCE: + return v4l2_ctrl_query_fill(qc, 0, 3, 1, 0); + case V4L2_CID_EXPOSURE: + return v4l2_ctrl_query_fill(qc, -2, 2, 1, 0); + } + return -EINVAL; +} + +static int sensor_s_ctrl(struct cmos_subdev *sd, struct v4l2_control *ctrl) +{ + switch (ctrl->id) { + case V4L2_CID_CAMERA_SCENE_MODE: + return sensor_s_scenemode(sd, ctrl->value); + case V4L2_CID_DO_WHITE_BALANCE: + return sensor_s_wb(sd, ctrl->value); + case V4L2_CID_EXPOSURE: + return sensor_s_exposure(sd, ctrl->value); + case V4L2_CID_HFLIP: + return sensor_s_hflip(sd, ctrl->value); + case V4L2_CID_VFLIP: + return sensor_s_vflip(sd, ctrl->value); + default: + case WMT_V4L2_CID_CAMERA_ANTIBANDING: + return -EINVAL; + } + return -EINVAL; +} + +static int sensor_g_mbus_fmt(struct cmos_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + return -EINVAL; +} + +static int sensor_s_mbus_fmt(struct cmos_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + const struct cmos_win_size *win; + + win = cmos_select_win(&mf->width, &mf->height); + if (!win) { + pr_err("%s, s_mbus_fmt failed, width %d, height %d\n", + sd->name, mf->width, mf->height); + return -EINVAL; + } + + sensor_write_array(sd, win->regs, win->size); + return 0; +} + +static int sensor_try_mbus_fmt(struct cmos_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + return 0; +} + +static int sensor_enum_framesizes(struct cmos_subdev *sd, + struct v4l2_frmsizeenum *fsize) +{ + int i; + int num_valid = -1; + __u32 index = fsize->index; + + for (i = 0; i < ARRAY_SIZE(cmos_supported_win_sizes); i++) { + const struct cmos_win_size *win = &cmos_supported_win_sizes[index]; + if (index == ++num_valid) { + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + fsize->discrete.width = win->width; + fsize->discrete.height = win->height; + return 0; + } + } + + return -EINVAL; +} + +static int sensor_identify(struct cmos_subdev *sd) +{ + return (sensor_read(sd, 0x0a) == sd->id) ? 0 : -EINVAL; +} + +static int sensor_init(struct cmos_subdev *sd) +{ + if (sensor_identify(sd)) { + return -1; + } + + sensor_write_array(sd, ov7675_default_regs_init, + ARRAY_SIZE(ov7675_default_regs_init)); + return 0; +} + +static int sensor_exit(struct cmos_subdev *sd) +{ + return 0; +} + +static struct cmos_subdev_ops ov7675_ops = { + .identify = sensor_identify, + .init = sensor_init, + .exit = sensor_exit, + .queryctrl = sensor_queryctrl, + .s_ctrl = sensor_s_ctrl, + .s_mbus_fmt = sensor_s_mbus_fmt, + .g_mbus_fmt = sensor_g_mbus_fmt, + .try_mbus_fmt = sensor_try_mbus_fmt, + .enum_framesizes = sensor_enum_framesizes, +}; + +struct cmos_subdev ov7675 = { + .name = "ov7675", + .i2c_addr = 0x21, + .id = 0x76, + .max_width = 640, + .max_height = 480, + .ops = &ov7675_ops, +}; + +#if 0 +static int __init ov7675_init(void) +{ + return cmos_register_sudbdev(&ov7675); +} + +static void __exit ov7675_exit(void) +{ + return cmos_unregister_subdev(&ov7675); +} + +module_init(ov7675_init); +module_exit(ov7675_exit); + +MODULE_LICENSE("GPL"); +#endif -- cgit