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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 03:05:29 +07:00
d9b45ed3d8
Rework the route configuration code to support entities with multiple sink pads. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
252 lines
6.1 KiB
C
252 lines
6.1 KiB
C
/*
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* vsp1_lut.c -- R-Car VSP1 Look-Up Table
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*
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* Copyright (C) 2013 Renesas Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can 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; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/device.h>
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#include <linux/gfp.h>
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#include <linux/vsp1.h>
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#include <media/v4l2-subdev.h>
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#include "vsp1.h"
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#include "vsp1_lut.h"
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#define LUT_MIN_SIZE 4U
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#define LUT_MAX_SIZE 8190U
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/* -----------------------------------------------------------------------------
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* Device Access
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*/
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static inline u32 vsp1_lut_read(struct vsp1_lut *lut, u32 reg)
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{
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return vsp1_read(lut->entity.vsp1, reg);
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}
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static inline void vsp1_lut_write(struct vsp1_lut *lut, u32 reg, u32 data)
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{
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vsp1_write(lut->entity.vsp1, reg, data);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Core Operations
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*/
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static void lut_configure(struct vsp1_lut *lut, struct vsp1_lut_config *config)
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{
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memcpy_toio(lut->entity.vsp1->mmio + VI6_LUT_TABLE, config->lut,
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sizeof(config->lut));
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}
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static long lut_ioctl(struct v4l2_subdev *subdev, unsigned int cmd, void *arg)
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{
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struct vsp1_lut *lut = to_lut(subdev);
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switch (cmd) {
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case VIDIOC_VSP1_LUT_CONFIG:
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lut_configure(lut, arg);
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return 0;
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default:
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return -ENOIOCTLCMD;
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}
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Video Operations
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*/
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static int lut_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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struct vsp1_lut *lut = to_lut(subdev);
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if (!enable)
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return 0;
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vsp1_lut_write(lut, VI6_LUT_CTRL, VI6_LUT_CTRL_EN);
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Pad Operations
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*/
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static int lut_enum_mbus_code(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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static const unsigned int codes[] = {
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V4L2_MBUS_FMT_ARGB8888_1X32,
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V4L2_MBUS_FMT_AHSV8888_1X32,
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V4L2_MBUS_FMT_AYUV8_1X32,
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};
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struct v4l2_mbus_framefmt *format;
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if (code->pad == LUT_PAD_SINK) {
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if (code->index >= ARRAY_SIZE(codes))
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return -EINVAL;
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code->code = codes[code->index];
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} else {
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/* The LUT can't perform format conversion, the sink format is
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* always identical to the source format.
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*/
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if (code->index)
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return -EINVAL;
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format = v4l2_subdev_get_try_format(fh, LUT_PAD_SINK);
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code->code = format->code;
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}
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return 0;
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}
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static int lut_enum_frame_size(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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struct v4l2_mbus_framefmt *format;
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format = v4l2_subdev_get_try_format(fh, fse->pad);
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if (fse->index || fse->code != format->code)
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return -EINVAL;
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if (fse->pad == LUT_PAD_SINK) {
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fse->min_width = LUT_MIN_SIZE;
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fse->max_width = LUT_MAX_SIZE;
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fse->min_height = LUT_MIN_SIZE;
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fse->max_height = LUT_MAX_SIZE;
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} else {
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/* The size on the source pad are fixed and always identical to
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* the size on the sink pad.
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*/
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fse->min_width = format->width;
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fse->max_width = format->width;
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fse->min_height = format->height;
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fse->max_height = format->height;
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}
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return 0;
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}
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static int lut_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_format *fmt)
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{
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struct vsp1_lut *lut = to_lut(subdev);
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fmt->format = *vsp1_entity_get_pad_format(&lut->entity, fh, fmt->pad,
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fmt->which);
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return 0;
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}
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static int lut_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_format *fmt)
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{
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struct vsp1_lut *lut = to_lut(subdev);
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struct v4l2_mbus_framefmt *format;
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/* Default to YUV if the requested format is not supported. */
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if (fmt->format.code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
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fmt->format.code != V4L2_MBUS_FMT_AHSV8888_1X32 &&
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fmt->format.code != V4L2_MBUS_FMT_AYUV8_1X32)
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fmt->format.code = V4L2_MBUS_FMT_AYUV8_1X32;
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format = vsp1_entity_get_pad_format(&lut->entity, fh, fmt->pad,
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fmt->which);
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if (fmt->pad == LUT_PAD_SOURCE) {
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/* The LUT output format can't be modified. */
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fmt->format = *format;
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return 0;
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}
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format->width = clamp_t(unsigned int, fmt->format.width,
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LUT_MIN_SIZE, LUT_MAX_SIZE);
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format->height = clamp_t(unsigned int, fmt->format.height,
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LUT_MIN_SIZE, LUT_MAX_SIZE);
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format->field = V4L2_FIELD_NONE;
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format->colorspace = V4L2_COLORSPACE_SRGB;
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fmt->format = *format;
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/* Propagate the format to the source pad. */
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format = vsp1_entity_get_pad_format(&lut->entity, fh, LUT_PAD_SOURCE,
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fmt->which);
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*format = fmt->format;
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Operations
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*/
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static struct v4l2_subdev_core_ops lut_core_ops = {
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.ioctl = lut_ioctl,
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};
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static struct v4l2_subdev_video_ops lut_video_ops = {
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.s_stream = lut_s_stream,
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};
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static struct v4l2_subdev_pad_ops lut_pad_ops = {
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.enum_mbus_code = lut_enum_mbus_code,
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.enum_frame_size = lut_enum_frame_size,
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.get_fmt = lut_get_format,
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.set_fmt = lut_set_format,
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};
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static struct v4l2_subdev_ops lut_ops = {
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.core = &lut_core_ops,
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.video = &lut_video_ops,
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.pad = &lut_pad_ops,
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};
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/* -----------------------------------------------------------------------------
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* Initialization and Cleanup
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*/
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struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1)
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{
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struct v4l2_subdev *subdev;
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struct vsp1_lut *lut;
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int ret;
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lut = devm_kzalloc(vsp1->dev, sizeof(*lut), GFP_KERNEL);
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if (lut == NULL)
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return ERR_PTR(-ENOMEM);
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lut->entity.type = VSP1_ENTITY_LUT;
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ret = vsp1_entity_init(vsp1, &lut->entity, 2);
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if (ret < 0)
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return ERR_PTR(ret);
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/* Initialize the V4L2 subdev. */
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subdev = &lut->entity.subdev;
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v4l2_subdev_init(subdev, &lut_ops);
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subdev->entity.ops = &vsp1_media_ops;
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subdev->internal_ops = &vsp1_subdev_internal_ops;
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snprintf(subdev->name, sizeof(subdev->name), "%s lut",
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dev_name(vsp1->dev));
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v4l2_set_subdevdata(subdev, lut);
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subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
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vsp1_entity_init_formats(subdev, NULL);
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return lut;
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}
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