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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5778e749c1
Support the new 'which' field in the enum_frame_size ops. Most drivers do not need to be changed since they always returns the same enumeration regardless of the 'which' field. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
242 lines
6.1 KiB
C
242 lines
6.1 KiB
C
/*
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* vsp1_lif.c -- R-Car VSP1 LCD Controller Interface
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*
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* Copyright (C) 2013-2014 Renesas Electronics 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 <media/v4l2-subdev.h>
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#include "vsp1.h"
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#include "vsp1_lif.h"
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#define LIF_MIN_SIZE 2U
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#define LIF_MAX_SIZE 2048U
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/* -----------------------------------------------------------------------------
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* Device Access
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*/
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static inline u32 vsp1_lif_read(struct vsp1_lif *lif, u32 reg)
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{
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return vsp1_read(lif->entity.vsp1, reg);
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}
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static inline void vsp1_lif_write(struct vsp1_lif *lif, u32 reg, u32 data)
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{
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vsp1_write(lif->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 int lif_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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const struct v4l2_mbus_framefmt *format;
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struct vsp1_lif *lif = to_lif(subdev);
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unsigned int hbth = 1300;
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unsigned int obth = 400;
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unsigned int lbth = 200;
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if (!enable) {
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vsp1_lif_write(lif, VI6_LIF_CTRL, 0);
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return 0;
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}
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format = &lif->entity.formats[LIF_PAD_SOURCE];
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obth = min(obth, (format->width + 1) / 2 * format->height - 4);
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vsp1_lif_write(lif, VI6_LIF_CSBTH,
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(hbth << VI6_LIF_CSBTH_HBTH_SHIFT) |
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(lbth << VI6_LIF_CSBTH_LBTH_SHIFT));
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vsp1_lif_write(lif, VI6_LIF_CTRL,
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(obth << VI6_LIF_CTRL_OBTH_SHIFT) |
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(format->code == 0 ? VI6_LIF_CTRL_CFMT : 0) |
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VI6_LIF_CTRL_REQSEL | VI6_LIF_CTRL_LIF_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 lif_enum_mbus_code(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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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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MEDIA_BUS_FMT_ARGB8888_1X32,
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MEDIA_BUS_FMT_AYUV8_1X32,
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};
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struct vsp1_lif *lif = to_lif(subdev);
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if (code->pad == LIF_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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struct v4l2_mbus_framefmt *format;
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/* The LIF 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 = vsp1_entity_get_pad_format(&lif->entity, cfg,
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LIF_PAD_SINK, code->which);
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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 lif_enum_frame_size(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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struct vsp1_lif *lif = to_lif(subdev);
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struct v4l2_mbus_framefmt *format;
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format = vsp1_entity_get_pad_format(&lif->entity, cfg, LIF_PAD_SINK,
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fse->which);
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if (fse->index || fse->code != format->code)
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return -EINVAL;
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if (fse->pad == LIF_PAD_SINK) {
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fse->min_width = LIF_MIN_SIZE;
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fse->max_width = LIF_MAX_SIZE;
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fse->min_height = LIF_MIN_SIZE;
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fse->max_height = LIF_MAX_SIZE;
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} else {
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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 lif_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vsp1_lif *lif = to_lif(subdev);
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fmt->format = *vsp1_entity_get_pad_format(&lif->entity, cfg, fmt->pad,
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fmt->which);
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return 0;
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}
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static int lif_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vsp1_lif *lif = to_lif(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 != MEDIA_BUS_FMT_ARGB8888_1X32 &&
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fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
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fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
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format = vsp1_entity_get_pad_format(&lif->entity, cfg, fmt->pad,
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fmt->which);
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if (fmt->pad == LIF_PAD_SOURCE) {
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/* The LIF source format is always identical to its sink
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* format.
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*/
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fmt->format = *format;
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return 0;
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}
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format->code = fmt->format.code;
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format->width = clamp_t(unsigned int, fmt->format.width,
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LIF_MIN_SIZE, LIF_MAX_SIZE);
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format->height = clamp_t(unsigned int, fmt->format.height,
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LIF_MIN_SIZE, LIF_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(&lif->entity, cfg, LIF_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_video_ops lif_video_ops = {
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.s_stream = lif_s_stream,
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};
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static struct v4l2_subdev_pad_ops lif_pad_ops = {
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.enum_mbus_code = lif_enum_mbus_code,
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.enum_frame_size = lif_enum_frame_size,
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.get_fmt = lif_get_format,
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.set_fmt = lif_set_format,
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};
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static struct v4l2_subdev_ops lif_ops = {
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.video = &lif_video_ops,
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.pad = &lif_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_lif *vsp1_lif_create(struct vsp1_device *vsp1)
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{
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struct v4l2_subdev *subdev;
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struct vsp1_lif *lif;
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int ret;
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lif = devm_kzalloc(vsp1->dev, sizeof(*lif), GFP_KERNEL);
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if (lif == NULL)
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return ERR_PTR(-ENOMEM);
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lif->entity.type = VSP1_ENTITY_LIF;
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ret = vsp1_entity_init(vsp1, &lif->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 = &lif->entity.subdev;
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v4l2_subdev_init(subdev, &lif_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 lif",
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dev_name(vsp1->dev));
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v4l2_set_subdevdata(subdev, lif);
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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 lif;
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}
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