diff options
Diffstat (limited to 'drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c')
| -rwxr-xr-x | drivers/media/video/wmt_v4l2/sensors/ov7675/ov7675.c | 321 |
1 files changed, 321 insertions, 0 deletions
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
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