From 417d2e507edcb5cf15eb344f86bd3dd28737f24e Mon Sep 17 00:00:00 2001 From: Benoit Parrot Date: Tue, 9 Dec 2014 16:43:44 -0300 Subject: [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 Signed-off-by: Darren Etheridge Signed-off-by: Lad, Prabhakar [hans.verkuil@cisco.com: swapped two lines to fix vpfe_release() & add pinctrl include] Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/Kbuild | 1 + include/uapi/linux/am437x-vpfe.h | 122 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 123 insertions(+) create mode 100644 include/uapi/linux/am437x-vpfe.h (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index 00b100023c47..9312d5806541 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -35,6 +35,7 @@ header-y += adfs_fs.h header-y += affs_hardblocks.h header-y += agpgart.h header-y += aio_abi.h +header-y += am437x-vpfe.h header-y += apm_bios.h header-y += arcfb.h header-y += atalk.h diff --git a/include/uapi/linux/am437x-vpfe.h b/include/uapi/linux/am437x-vpfe.h new file mode 100644 index 000000000000..9b03033f9cd6 --- /dev/null +++ b/include/uapi/linux/am437x-vpfe.h @@ -0,0 +1,122 @@ +/* + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. + * + * Benoit Parrot + * Lad, Prabhakar + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef AM437X_VPFE_USER_H +#define AM437X_VPFE_USER_H + +enum vpfe_ccdc_data_size { + VPFE_CCDC_DATA_16BITS = 0, + VPFE_CCDC_DATA_15BITS, + VPFE_CCDC_DATA_14BITS, + VPFE_CCDC_DATA_13BITS, + VPFE_CCDC_DATA_12BITS, + VPFE_CCDC_DATA_11BITS, + VPFE_CCDC_DATA_10BITS, + VPFE_CCDC_DATA_8BITS, +}; + +/* enum for No of pixel per line to be avg. in Black Clamping*/ +enum vpfe_ccdc_sample_length { + VPFE_CCDC_SAMPLE_1PIXELS = 0, + VPFE_CCDC_SAMPLE_2PIXELS, + VPFE_CCDC_SAMPLE_4PIXELS, + VPFE_CCDC_SAMPLE_8PIXELS, + VPFE_CCDC_SAMPLE_16PIXELS, +}; + +/* enum for No of lines in Black Clamping */ +enum vpfe_ccdc_sample_line { + VPFE_CCDC_SAMPLE_1LINES = 0, + VPFE_CCDC_SAMPLE_2LINES, + VPFE_CCDC_SAMPLE_4LINES, + VPFE_CCDC_SAMPLE_8LINES, + VPFE_CCDC_SAMPLE_16LINES, +}; + +/* enum for Alaw gamma width */ +enum vpfe_ccdc_gamma_width { + VPFE_CCDC_GAMMA_BITS_15_6 = 0, /* use bits 15-6 for gamma */ + VPFE_CCDC_GAMMA_BITS_14_5, + VPFE_CCDC_GAMMA_BITS_13_4, + VPFE_CCDC_GAMMA_BITS_12_3, + VPFE_CCDC_GAMMA_BITS_11_2, + VPFE_CCDC_GAMMA_BITS_10_1, + VPFE_CCDC_GAMMA_BITS_09_0, /* use bits 9-0 for gamma */ +}; + +/* structure for ALaw */ +struct vpfe_ccdc_a_law { + /* Enable/disable A-Law */ + unsigned char enable; + /* Gamma Width Input */ + enum vpfe_ccdc_gamma_width gamma_wd; +}; + +/* structure for Black Clamping */ +struct vpfe_ccdc_black_clamp { + unsigned char enable; + /* only if bClampEnable is TRUE */ + enum vpfe_ccdc_sample_length sample_pixel; + /* only if bClampEnable is TRUE */ + enum vpfe_ccdc_sample_line sample_ln; + /* only if bClampEnable is TRUE */ + unsigned short start_pixel; + /* only if bClampEnable is TRUE */ + unsigned short sgain; + /* only if bClampEnable is FALSE */ + unsigned short dc_sub; +}; + +/* structure for Black Level Compensation */ +struct vpfe_ccdc_black_compensation { + /* Constant value to subtract from Red component */ + char r; + /* Constant value to subtract from Gr component */ + char gr; + /* Constant value to subtract from Blue component */ + char b; + /* Constant value to subtract from Gb component */ + char gb; +}; + +/* Structure for CCDC configuration parameters for raw capture mode passed + * by application + */ +struct vpfe_ccdc_config_params_raw { + /* data size value from 8 to 16 bits */ + enum vpfe_ccdc_data_size data_sz; + /* Structure for Optional A-Law */ + struct vpfe_ccdc_a_law alaw; + /* Structure for Optical Black Clamp */ + struct vpfe_ccdc_black_clamp blk_clamp; + /* Structure for Black Compensation */ + struct vpfe_ccdc_black_compensation blk_comp; +}; + +/* + * Private IOCTL + * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture + * This is an experimental ioctl that will change in future kernels. So use + * this ioctl with care ! + **/ +#define VIDIOC_AM437X_CCDC_CFG \ + _IOW('V', BASE_VIDIOC_PRIVATE + 1, void *) + +#endif /* AM437X_VPFE_USER_H */ -- cgit v1.2.3