From f0222c7d860f09a61bec5e500539f28db0184b38 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 9 Jun 2009 17:12:33 -0300 Subject: V4L/DVB (12125): v4l2: add new s_config subdev ops and v4l2_i2c_new_subdev_cfg/board calls Add a new s_config core ops call: this is called with the irq and platform data to be used to initialize the subdev. Added new v4l2_i2c_new_subdev_cfg and v4l2_i2c_new_subdev_board calls that allows you to pass these new arguments. The existing v4l2_i2c_new_subdev functions were modified to also call s_config. In the future the existing v4l2_i2c_new_subdev functions will be replaced by a single v4l2_i2c_new_subdev function similar to v4l2_i2c_new_subdev_cfg but without the irq and platform_data arguments. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-common.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/media/v4l2-common.h') diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index c48c24e4d0fa..95f4364322eb 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -153,6 +153,22 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct v4l2_device *v4l2_dev, struct v4l2_subdev *v4l2_i2c_new_probed_subdev_addr(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, const char *module_name, const char *client_type, u8 addr); + +/* Load an i2c module and return an initialized v4l2_subdev struct. + Only call request_module if module_name != NULL. + The client_type argument is the name of the chip that's on the adapter. */ +struct v4l2_subdev *v4l2_i2c_new_subdev_cfg(struct v4l2_device *v4l2_dev, + struct i2c_adapter *adapter, + const char *module_name, const char *client_type, + int irq, void *platform_data, + u8 addr, const unsigned short *probe_addrs); + +struct i2c_board_info; + +struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, + struct i2c_adapter *adapter, const char *module_name, + struct i2c_board_info *info, const unsigned short *probe_addrs); + /* Initialize an v4l2_subdev with data from an i2c_client struct */ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, const struct v4l2_subdev_ops *ops); -- cgit v1.2.1 From b0d3159be9a36fd8b7b1cf88b812d951add53d11 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Sat, 30 May 2009 21:45:46 -0300 Subject: V4L/DVB (11901): v4l2: Create helper function for bounding and aligning images Most hardware has limits on minimum and maximum image dimensions and also requirements about alignment. For example, image width must be even or a multiple of four. Some hardware has requirements that the total image size (width * height) be a multiple of some power of two. v4l_bound_align_image() will enforce min and max width and height, power of two alignment on width and height, and power of two alignment on total image size. It uses an efficient algorithm that will try to find the "closest" image size that meets the requirements. Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-common.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/media/v4l2-common.h') diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 95f4364322eb..33a18426ab9b 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -209,4 +209,14 @@ struct v4l2_routing { u32 output; }; +/* ------------------------------------------------------------------------- */ + +/* Miscellaneous helper functions */ + +void v4l_bound_align_image(unsigned int *w, unsigned int wmin, + unsigned int wmax, unsigned int walign, + unsigned int *h, unsigned int hmin, + unsigned int hmax, unsigned int halign, + unsigned int salign); + #endif /* V4L2_COMMON_H_ */ -- cgit v1.2.1