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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0457-media-ov5647-Add-V4L2-controls-for-analogue-gain-exp.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0457-media-ov5647-Add-V4L2-controls-for-analogue-gain-exp.patch277
1 files changed, 0 insertions, 277 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0457-media-ov5647-Add-V4L2-controls-for-analogue-gain-exp.patch b/target/linux/bcm27xx/patches-5.4/950-0457-media-ov5647-Add-V4L2-controls-for-analogue-gain-exp.patch
deleted file mode 100644
index 907bab5cfd..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0457-media-ov5647-Add-V4L2-controls-for-analogue-gain-exp.patch
+++ /dev/null
@@ -1,277 +0,0 @@
-From d9d333b717f220439868edd533994f2709b3a95f Mon Sep 17 00:00:00 2001
-From: David Plowman <david.plowman@raspberrypi.com>
-Date: Wed, 29 Jan 2020 15:31:23 +0000
-Subject: [PATCH] media: ov5647: Add V4L2 controls for analogue gain,
- exposure and AWB
-
-Added basic v4l2_ctrl_handler infrastructure (there was none
-previously).
-
-Added controls to let AWB/AEC/AGC run in the sensor's auto mode or
-manually. Also controls to set exposure (in lines) and analogue gain
-(as a register code) from user code.
-
-Also delete registers (just the one) from the VGA mode register set
-that are now controlled by the new V4L2 controls.
-
-Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
-Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
----
- drivers/media/i2c/ov5647.c | 175 ++++++++++++++++++++++++++++++++++++-
- 1 file changed, 174 insertions(+), 1 deletion(-)
-
---- a/drivers/media/i2c/ov5647.c
-+++ b/drivers/media/i2c/ov5647.c
-@@ -29,11 +29,13 @@
- #include <linux/of_graph.h>
- #include <linux/slab.h>
- #include <linux/videodev2.h>
-+#include <media/v4l2-ctrls.h>
- #include <media/v4l2-device.h>
- #include <media/v4l2-fwnode.h>
- #include <media/v4l2-image-sizes.h>
- #include <media/v4l2-mediabus.h>
-
-+
- #define SENSOR_NAME "ov5647"
-
- /*
-@@ -53,9 +55,16 @@
- #define OV5647_REG_CHIPID_H 0x300A
- #define OV5647_REG_CHIPID_L 0x300B
- #define OV5640_REG_PAD_OUT 0x300D
-+#define OV5647_REG_EXP_HI 0x3500
-+#define OV5647_REG_EXP_MID 0x3501
-+#define OV5647_REG_EXP_LO 0x3502
-+#define OV5647_REG_AEC_AGC 0x3503
-+#define OV5647_REG_GAIN_HI 0x350A
-+#define OV5647_REG_GAIN_LO 0x350B
- #define OV5647_REG_FRAME_OFF_NUMBER 0x4202
- #define OV5647_REG_MIPI_CTRL00 0x4800
- #define OV5647_REG_MIPI_CTRL14 0x4814
-+#define OV5647_REG_AWB 0x5001
-
- #define REG_TERM 0xfffe
- #define VAL_TERM 0xfe
-@@ -101,6 +110,7 @@ struct ov5647 {
- struct clk *xclk;
- struct gpio_desc *pwdn;
- unsigned int flags;
-+ struct v4l2_ctrl_handler ctrls;
- };
-
- static inline struct ov5647 *to_state(struct v4l2_subdev *sd)
-@@ -135,7 +145,6 @@ static struct regval_list ov5647_640x480
- {0x3612, 0x59},
- {0x3618, 0x00},
- {0x5000, 0x06},
-- {0x5001, 0x01},
- {0x5002, 0x41},
- {0x5003, 0x08},
- {0x5a00, 0x08},
-@@ -372,6 +381,11 @@ static int ov5647_stream_on(struct v4l2_
- return ret;
- }
-
-+ /* Apply customized values from user when stream starts */
-+ ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler);
-+ if (ret)
-+ return ret;
-+
- if (ov5647->flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK)
- val |= MIPI_CTRL00_CLOCK_LANE_GATE |
- MIPI_CTRL00_LINE_SYNC_ENABLE;
-@@ -753,6 +767,120 @@ static int ov5647_parse_dt(struct device
- return ret;
- }
-
-+static int ov5647_s_auto_white_balance(struct v4l2_subdev *sd, u32 val)
-+{
-+ /* non-zero turns on AWB */
-+ return ov5647_write(sd, OV5647_REG_AWB, val ? 1 : 0);
-+}
-+
-+static int ov5647_s_autogain(struct v4l2_subdev *sd, u32 val)
-+{
-+ int ret;
-+ u8 reg;
-+
-+ /* non-zero turns on AGC by clearing bit 1 */
-+ ret = ov5647_read(sd, OV5647_REG_AEC_AGC, &reg);
-+ if (ret == 0)
-+ ret = ov5647_write(sd, OV5647_REG_AEC_AGC,
-+ val ? reg & ~2 : reg | 2);
-+
-+ return ret;
-+}
-+
-+static int ov5647_s_exposure_auto(struct v4l2_subdev *sd, u32 val)
-+{
-+ int ret;
-+ u8 reg;
-+
-+ /* Everything except V4L2_EXPOSURE_MANUAL turns on AEC by
-+ * clearing bit 0
-+ */
-+ ret = ov5647_read(sd, OV5647_REG_AEC_AGC, &reg);
-+ if (ret == 0)
-+ ret = ov5647_write(sd, OV5647_REG_AEC_AGC,
-+ val == V4L2_EXPOSURE_MANUAL ?
-+ reg | 1 : reg & ~1);
-+
-+ return ret;
-+}
-+
-+static int ov5647_s_analogue_gain(struct v4l2_subdev *sd, u32 val)
-+{
-+ int ret;
-+
-+ /* 10 bits of gain, 2 in the high register */
-+ ret = ov5647_write(sd, OV5647_REG_GAIN_HI, (val >> 8) & 3);
-+ if (ret == 0)
-+ ret = ov5647_write(sd, OV5647_REG_GAIN_LO, val & 0xff);
-+
-+ return ret;
-+}
-+
-+static int ov5647_s_exposure(struct v4l2_subdev *sd, u32 val)
-+{
-+ int ret;
-+
-+ /* Sensor has 20 bits, but the bottom 4 bits are fractions of a line
-+ * which we leave as zero (and don't receive in "val").
-+ */
-+ ret = ov5647_write(sd, OV5647_REG_EXP_HI, (val >> 12) & 0xf);
-+ if (ret == 0)
-+ ov5647_write(sd, OV5647_REG_EXP_MID, (val >> 4) & 0xff);
-+ if (ret == 0)
-+ ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4);
-+
-+ return ret;
-+}
-+
-+static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)
-+{
-+ struct ov5647 *state = container_of(ctrl->handler,
-+ struct ov5647, ctrls);
-+ struct v4l2_subdev *sd = &state->sd;
-+ struct i2c_client *client = v4l2_get_subdevdata(sd);
-+ int ret = 0;
-+
-+ /* v4l2_ctrl_lock() locks our own mutex */
-+
-+ /*
-+ * If the device is not powered up by the host driver do
-+ * not apply any controls to H/W at this time. Instead
-+ * the controls will be restored right after power-up.
-+ */
-+ if (state->power_count == 0)
-+ return 0;
-+
-+ switch (ctrl->id) {
-+ case V4L2_CID_AUTO_WHITE_BALANCE:
-+ ret = ov5647_s_auto_white_balance(sd, ctrl->val);
-+ break;
-+ case V4L2_CID_AUTOGAIN:
-+ ret = ov5647_s_autogain(sd, ctrl->val);
-+ break;
-+ case V4L2_CID_EXPOSURE_AUTO:
-+ ret = ov5647_s_exposure_auto(sd, ctrl->val);
-+ break;
-+ case V4L2_CID_ANALOGUE_GAIN:
-+ ret = ov5647_s_analogue_gain(sd, ctrl->val);
-+ break;
-+ case V4L2_CID_EXPOSURE:
-+ ret = ov5647_s_exposure(sd, ctrl->val);
-+ break;
-+ default:
-+ dev_info(&client->dev,
-+ "ctrl(id:0x%x,val:0x%x) is not handled\n",
-+ ctrl->id, ctrl->val);
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ return ret;
-+}
-+
-+static const struct v4l2_ctrl_ops ov5647_ctrl_ops = {
-+ .s_ctrl = ov5647_s_ctrl,
-+};
-+
- static int ov5647_probe(struct i2c_client *client)
- {
- struct device *dev = &client->dev;
-@@ -761,6 +889,7 @@ static int ov5647_probe(struct i2c_clien
- struct v4l2_subdev *sd;
- struct device_node *np = client->dev.of_node;
- u32 xclk_freq;
-+ struct v4l2_ctrl *ctrl;
-
- sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
- if (!sensor)
-@@ -793,6 +922,48 @@ static int ov5647_probe(struct i2c_clien
-
- mutex_init(&sensor->lock);
-
-+ /* Initialise controls. */
-+ v4l2_ctrl_handler_init(&sensor->ctrls, 3);
-+ v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
-+ V4L2_CID_AUTOGAIN,
-+ 0, /* min */
-+ 1, /* max */
-+ 1, /* step */
-+ 1); /* default */
-+ v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
-+ V4L2_CID_AUTO_WHITE_BALANCE,
-+ 0, /* min */
-+ 1, /* max */
-+ 1, /* step */
-+ 1); /* default */
-+ v4l2_ctrl_new_std_menu(&sensor->ctrls, &ov5647_ctrl_ops,
-+ V4L2_CID_EXPOSURE_AUTO,
-+ V4L2_EXPOSURE_MANUAL, /* max */
-+ 0, /* skip_mask */
-+ V4L2_EXPOSURE_AUTO); /* default */
-+ ctrl = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
-+ V4L2_CID_EXPOSURE,
-+ 4, /* min lines */
-+ 65535, /* max lines (4+8+4 bits)*/
-+ 1, /* step */
-+ 1000); /* default number of lines */
-+ ctrl->flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
-+ ctrl = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
-+ V4L2_CID_ANALOGUE_GAIN,
-+ 16, /* min, 16 = 1.0x */
-+ 1023, /* max (10 bits) */
-+ 1, /* step */
-+ 32); /* default, 32 = 2.0x */
-+ ctrl->flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
-+
-+ if (sensor->ctrls.error) {
-+ ret = sensor->ctrls.error;
-+ dev_err(&client->dev, "%s control init failed (%d)\n",
-+ __func__, ret);
-+ goto error;
-+ }
-+ sensor->sd.ctrl_handler = &sensor->ctrls;
-+
- /* Set the default mode before we init the subdev */
- sensor->mode = OV5647_DEFAULT_MODE;
-
-@@ -828,6 +999,7 @@ static int ov5647_probe(struct i2c_clien
- error:
- media_entity_cleanup(&sd->entity);
- mutex_remove:
-+ v4l2_ctrl_handler_free(&sensor->ctrls);
- mutex_destroy(&sensor->lock);
- return ret;
- }
-@@ -839,6 +1011,7 @@ static int ov5647_remove(struct i2c_clie
-
- v4l2_async_unregister_subdev(&ov5647->sd);
- media_entity_cleanup(&ov5647->sd.entity);
-+ v4l2_ctrl_handler_free(&ov5647->ctrls);
- v4l2_device_unregister_subdev(sd);
- mutex_destroy(&ov5647->lock);
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-23 04:40:42 +0000