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path: root/drivers/media/i2c/ov5640.c
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Diffstat (limited to 'drivers/media/i2c/ov5640.c')
-rw-r--r--drivers/media/i2c/ov5640.c86
1 files changed, 65 insertions, 21 deletions
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index e0f908af581b..1536649b9e90 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -50,6 +50,7 @@
#define OV5640_REG_SYS_CTRL0 0x3008
#define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42
#define OV5640_REG_SYS_CTRL0_SW_PWUP 0x02
+#define OV5640_REG_SYS_CTRL0_SW_RST 0x82
#define OV5640_REG_CHIP_ID 0x300a
#define OV5640_REG_IO_MIPI_CTRL00 0x300e
#define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
@@ -520,7 +521,18 @@ static u32 ov5640_code_to_bpp(struct ov5640_dev *sensor, u32 code)
*/
/* YUV422 UYVY VGA@30fps */
-static const struct v4l2_mbus_framefmt ov5640_default_fmt = {
+static const struct v4l2_mbus_framefmt ov5640_csi2_default_fmt = {
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .width = 640,
+ .height = 480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .quantization = V4L2_QUANTIZATION_FULL_RANGE,
+ .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .field = V4L2_FIELD_NONE,
+};
+
+static const struct v4l2_mbus_framefmt ov5640_dvp_default_fmt = {
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.width = 640,
.height = 480,
@@ -532,7 +544,7 @@ static const struct v4l2_mbus_framefmt ov5640_default_fmt = {
};
static const struct reg_value ov5640_init_setting[] = {
- {0x3103, 0x11, 0, 0}, {0x3008, 0x82, 0, 5}, {0x3008, 0x42, 0, 0},
+ {0x3103, 0x11, 0, 0},
{0x3103, 0x03, 0, 0}, {0x3630, 0x36, 0, 0},
{0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
{0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
@@ -2424,24 +2436,48 @@ static void ov5640_power(struct ov5640_dev *sensor, bool enable)
gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
}
-static void ov5640_reset(struct ov5640_dev *sensor)
+/*
+ * From section 2.7 power up sequence:
+ * t0 + t1 + t2 >= 5ms Delay from DOVDD stable to PWDN pull down
+ * t3 >= 1ms Delay from PWDN pull down to RESETB pull up
+ * t4 >= 20ms Delay from RESETB pull up to SCCB (i2c) stable
+ *
+ * Some modules don't expose RESETB/PWDN pins directly, instead providing a
+ * "PWUP" GPIO which is wired through appropriate delays and inverters to the
+ * pins.
+ *
+ * In such cases, this gpio should be mapped to pwdn_gpio in the driver, and we
+ * should still toggle the pwdn_gpio below with the appropriate delays, while
+ * the calls to reset_gpio will be ignored.
+ */
+static void ov5640_powerup_sequence(struct ov5640_dev *sensor)
{
- if (!sensor->reset_gpio)
- return;
-
- gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ if (sensor->pwdn_gpio) {
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
- /* camera power cycle */
- ov5640_power(sensor, false);
- usleep_range(5000, 10000);
- ov5640_power(sensor, true);
- usleep_range(5000, 10000);
+ /* camera power cycle */
+ ov5640_power(sensor, false);
+ usleep_range(5000, 10000);
+ ov5640_power(sensor, true);
+ usleep_range(5000, 10000);
- gpiod_set_value_cansleep(sensor->reset_gpio, 1);
- usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
+ usleep_range(1000, 2000);
- gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ } else {
+ /* software reset */
+ ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
+ OV5640_REG_SYS_CTRL0_SW_RST);
+ }
usleep_range(20000, 25000);
+
+ /*
+ * software standby: allows registers programming;
+ * exit at restore_mode() for CSI, s_stream(1) for DVP
+ */
+ ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
+ OV5640_REG_SYS_CTRL0_SW_PWDN);
}
static int ov5640_set_power_on(struct ov5640_dev *sensor)
@@ -2464,8 +2500,7 @@ static int ov5640_set_power_on(struct ov5640_dev *sensor)
goto xclk_off;
}
- ov5640_reset(sensor);
- ov5640_power(sensor, true);
+ ov5640_powerup_sequence(sensor);
ret = ov5640_init_slave_id(sensor);
if (ret)
@@ -3316,6 +3351,7 @@ static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
break;
}
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
return 0;
@@ -3391,6 +3427,7 @@ static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
break;
}
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
return ret;
@@ -3458,7 +3495,7 @@ static int ov5640_init_controls(struct ov5640_dev *sensor)
/* Auto/manual gain */
ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
0, 1, 1, 1);
- ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
+ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
0, 1023, 1, 0);
ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
@@ -3710,8 +3747,10 @@ static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
out:
mutex_unlock(&sensor->lock);
- if (!enable || ret)
+ if (!enable || ret) {
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
+ }
return ret;
}
@@ -3719,11 +3758,13 @@ out:
static int ov5640_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state)
{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
struct v4l2_mbus_framefmt *fmt =
v4l2_subdev_get_try_format(sd, state, 0);
struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, state, 0);
- *fmt = ov5640_default_fmt;
+ *fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
+ ov5640_dvp_default_fmt;
crop->left = OV5640_PIXEL_ARRAY_LEFT;
crop->top = OV5640_PIXEL_ARRAY_TOP;
@@ -3812,7 +3853,6 @@ static int ov5640_probe(struct i2c_client *client)
* default init sequence initialize sensor to
* YUV422 UYVY VGA@30fps
*/
- sensor->fmt = ov5640_default_fmt;
sensor->frame_interval.numerator = 1;
sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
sensor->current_fr = OV5640_30_FPS;
@@ -3845,6 +3885,9 @@ static int ov5640_probe(struct i2c_client *client)
return -EINVAL;
}
+ sensor->fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
+ ov5640_dvp_default_fmt;
+
/* get system clock (xclk) */
sensor->xclk = devm_clk_get(dev, "xclk");
if (IS_ERR(sensor->xclk)) {
@@ -3912,6 +3955,7 @@ static int ov5640_probe(struct i2c_client *client)
pm_runtime_set_autosuspend_delay(dev, 1000);
pm_runtime_use_autosuspend(dev);
+ pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
return 0;
generated by cgit (git 2.34.1) at 2024-06-14 23:27:24 +0000