[media] media: platform: add VPFE capture driver support for AM437X
This patch adds Video Processing Front End (VPFE) driver for AM437X family of devices Driver supports the following: - V4L2 API using MMAP buffer access based on videobuf2 api - Asynchronous sensor/decoder sub device registration - DT support Signed-off-by: Benoit Parrot <bparrot@ti.com> Signed-off-by: Darren Etheridge <detheridge@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> [hans.verkuil@cisco.com: swapped two lines to fix vpfe_release() & add pinctrl include] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Benoit Parrot
committed by
Mauro Carvalho Chehab
Mauro Carvalho Chehab
parent
3b1635e02e
commit
417d2e507e
122
include/uapi/linux/am437x-vpfe.h
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122
include/uapi/linux/am437x-vpfe.h
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/*
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* Copyright (C) 2013 - 2014 Texas Instruments, Inc.
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*
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* Benoit Parrot <bparrot@ti.com>
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* Lad, Prabhakar <prabhakar.csengg@gmail.com>
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef AM437X_VPFE_USER_H
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#define AM437X_VPFE_USER_H
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enum vpfe_ccdc_data_size {
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VPFE_CCDC_DATA_16BITS = 0,
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VPFE_CCDC_DATA_15BITS,
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VPFE_CCDC_DATA_14BITS,
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VPFE_CCDC_DATA_13BITS,
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VPFE_CCDC_DATA_12BITS,
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VPFE_CCDC_DATA_11BITS,
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VPFE_CCDC_DATA_10BITS,
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VPFE_CCDC_DATA_8BITS,
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};
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/* enum for No of pixel per line to be avg. in Black Clamping*/
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enum vpfe_ccdc_sample_length {
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VPFE_CCDC_SAMPLE_1PIXELS = 0,
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VPFE_CCDC_SAMPLE_2PIXELS,
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VPFE_CCDC_SAMPLE_4PIXELS,
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VPFE_CCDC_SAMPLE_8PIXELS,
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VPFE_CCDC_SAMPLE_16PIXELS,
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};
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/* enum for No of lines in Black Clamping */
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enum vpfe_ccdc_sample_line {
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VPFE_CCDC_SAMPLE_1LINES = 0,
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VPFE_CCDC_SAMPLE_2LINES,
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VPFE_CCDC_SAMPLE_4LINES,
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VPFE_CCDC_SAMPLE_8LINES,
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VPFE_CCDC_SAMPLE_16LINES,
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};
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/* enum for Alaw gamma width */
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enum vpfe_ccdc_gamma_width {
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VPFE_CCDC_GAMMA_BITS_15_6 = 0, /* use bits 15-6 for gamma */
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VPFE_CCDC_GAMMA_BITS_14_5,
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VPFE_CCDC_GAMMA_BITS_13_4,
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VPFE_CCDC_GAMMA_BITS_12_3,
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VPFE_CCDC_GAMMA_BITS_11_2,
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VPFE_CCDC_GAMMA_BITS_10_1,
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VPFE_CCDC_GAMMA_BITS_09_0, /* use bits 9-0 for gamma */
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};
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/* structure for ALaw */
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struct vpfe_ccdc_a_law {
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/* Enable/disable A-Law */
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unsigned char enable;
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/* Gamma Width Input */
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enum vpfe_ccdc_gamma_width gamma_wd;
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};
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/* structure for Black Clamping */
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struct vpfe_ccdc_black_clamp {
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unsigned char enable;
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/* only if bClampEnable is TRUE */
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enum vpfe_ccdc_sample_length sample_pixel;
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/* only if bClampEnable is TRUE */
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enum vpfe_ccdc_sample_line sample_ln;
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/* only if bClampEnable is TRUE */
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unsigned short start_pixel;
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/* only if bClampEnable is TRUE */
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unsigned short sgain;
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/* only if bClampEnable is FALSE */
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unsigned short dc_sub;
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};
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/* structure for Black Level Compensation */
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struct vpfe_ccdc_black_compensation {
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/* Constant value to subtract from Red component */
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char r;
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/* Constant value to subtract from Gr component */
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char gr;
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/* Constant value to subtract from Blue component */
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char b;
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/* Constant value to subtract from Gb component */
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char gb;
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};
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/* Structure for CCDC configuration parameters for raw capture mode passed
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* by application
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*/
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struct vpfe_ccdc_config_params_raw {
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/* data size value from 8 to 16 bits */
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enum vpfe_ccdc_data_size data_sz;
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/* Structure for Optional A-Law */
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struct vpfe_ccdc_a_law alaw;
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/* Structure for Optical Black Clamp */
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struct vpfe_ccdc_black_clamp blk_clamp;
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/* Structure for Black Compensation */
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struct vpfe_ccdc_black_compensation blk_comp;
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};
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/*
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* Private IOCTL
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* VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture
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* This is an experimental ioctl that will change in future kernels. So use
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* this ioctl with care !
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**/
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#define VIDIOC_AM437X_CCDC_CFG \
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_IOW('V', BASE_VIDIOC_PRIVATE + 1, void *)
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#endif /* AM437X_VPFE_USER_H */
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