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| author | Hugues Fruchet <hugues.fruchet@st.com> | 2018-06-18 12:29:19 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-06-28 14:45:56 +0200 |
| commit | c3f3ba3e6f78ea2159fca284e18840c6b3c1bfb6 (patch) | |
| tree | 8f24c3acae493d61f9f81f030c8ce676f5d5955b /drivers | |
| parent | media: dt-bindings: ov5640: Add "rotation" property (diff) | |
| download | linux-c3f3ba3e6f78ea2159fca284e18840c6b3c1bfb6.tar.xz linux-c3f3ba3e6f78ea2159fca284e18840c6b3c1bfb6.zip | |
media: ov5640: add support of module orientation
Add support of module being physically mounted upside down.
In this case, mirror and flip are enabled to fix captured images
orientation.
[Sakari Ailus: Use dev_fwnode() instead of accessing device's of_node]
Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/ov5640.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c index 41039e535499..9e1078632375 100644 --- a/drivers/media/i2c/ov5640.c +++ b/drivers/media/i2c/ov5640.c @@ -215,6 +215,7 @@ struct ov5640_dev { struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES]; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; + bool upside_down; /* lock to protect all members below */ struct mutex lock; @@ -2222,6 +2223,8 @@ static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value) static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value) { /* + * If sensor is mounted upside down, mirror logic is inversed. + * * Sensor is a BSI (Back Side Illuminated) one, * so image captured is physically mirrored. * This is why mirror logic is inversed in @@ -2235,11 +2238,14 @@ static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value) */ return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21, BIT(2) | BIT(1), - (!value) ? (BIT(2) | BIT(1)) : 0); + (!(value ^ sensor->upside_down)) ? + (BIT(2) | BIT(1)) : 0); } static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value) { + /* If sensor is mounted upside down, flip logic is inversed */ + /* * TIMING TC REG20: * - [2]: ISP vflip @@ -2247,7 +2253,8 @@ static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value) */ return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20, BIT(2) | BIT(1), - value ? (BIT(2) | BIT(1)) : 0); + (value ^ sensor->upside_down) ? + (BIT(2) | BIT(1)) : 0); } static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl) @@ -2625,6 +2632,7 @@ static int ov5640_probe(struct i2c_client *client, struct fwnode_handle *endpoint; struct ov5640_dev *sensor; struct v4l2_mbus_framefmt *fmt; + u32 rotation; int ret; sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); @@ -2650,6 +2658,22 @@ static int ov5640_probe(struct i2c_client *client, sensor->ae_target = 52; + /* optional indication of physical rotation of sensor */ + ret = fwnode_property_read_u32(dev_fwnode(&client->dev), "rotation", + &rotation); + if (!ret) { + switch (rotation) { + case 180: + sensor->upside_down = true; + /* fall through */ + case 0: + break; + default: + dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n", + rotation); + } + } + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL); if (!endpoint) { |