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178 lines
4.4 KiB
178 lines
4.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* vsp1_hsit.c -- R-Car VSP1 Hue Saturation value (Inverse) Transform |
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* |
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* Copyright (C) 2013 Renesas Corporation |
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* |
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* Contact: Laurent Pinchart ([email protected]) |
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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_dl.h" |
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#include "vsp1_hsit.h" |
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#define HSIT_MIN_SIZE 4U |
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#define HSIT_MAX_SIZE 8190U |
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/* ----------------------------------------------------------------------------- |
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* Device Access |
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*/ |
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static inline void vsp1_hsit_write(struct vsp1_hsit *hsit, |
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struct vsp1_dl_body *dlb, u32 reg, u32 data) |
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{ |
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vsp1_dl_body_write(dlb, reg, data); |
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} |
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/* ----------------------------------------------------------------------------- |
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* V4L2 Subdevice Operations |
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*/ |
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static int hsit_enum_mbus_code(struct v4l2_subdev *subdev, |
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struct v4l2_subdev_state *sd_state, |
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struct v4l2_subdev_mbus_code_enum *code) |
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{ |
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struct vsp1_hsit *hsit = to_hsit(subdev); |
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if (code->index > 0) |
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return -EINVAL; |
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if ((code->pad == HSIT_PAD_SINK && !hsit->inverse) | |
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(code->pad == HSIT_PAD_SOURCE && hsit->inverse)) |
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code->code = MEDIA_BUS_FMT_ARGB8888_1X32; |
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else |
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code->code = MEDIA_BUS_FMT_AHSV8888_1X32; |
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return 0; |
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} |
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static int hsit_enum_frame_size(struct v4l2_subdev *subdev, |
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struct v4l2_subdev_state *sd_state, |
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struct v4l2_subdev_frame_size_enum *fse) |
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{ |
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return vsp1_subdev_enum_frame_size(subdev, sd_state, fse, |
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HSIT_MIN_SIZE, |
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HSIT_MIN_SIZE, HSIT_MAX_SIZE, |
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HSIT_MAX_SIZE); |
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} |
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static int hsit_set_format(struct v4l2_subdev *subdev, |
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struct v4l2_subdev_state *sd_state, |
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struct v4l2_subdev_format *fmt) |
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{ |
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struct vsp1_hsit *hsit = to_hsit(subdev); |
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struct v4l2_subdev_state *config; |
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struct v4l2_mbus_framefmt *format; |
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int ret = 0; |
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mutex_lock(&hsit->entity.lock); |
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config = vsp1_entity_get_pad_config(&hsit->entity, sd_state, |
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fmt->which); |
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if (!config) { |
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ret = -EINVAL; |
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goto done; |
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} |
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format = vsp1_entity_get_pad_format(&hsit->entity, config, fmt->pad); |
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if (fmt->pad == HSIT_PAD_SOURCE) { |
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/* |
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* The HST and HSI output format code and resolution can't be |
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* modified. |
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*/ |
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fmt->format = *format; |
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goto done; |
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} |
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format->code = hsit->inverse ? MEDIA_BUS_FMT_AHSV8888_1X32 |
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: MEDIA_BUS_FMT_ARGB8888_1X32; |
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format->width = clamp_t(unsigned int, fmt->format.width, |
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HSIT_MIN_SIZE, HSIT_MAX_SIZE); |
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format->height = clamp_t(unsigned int, fmt->format.height, |
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HSIT_MIN_SIZE, HSIT_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(&hsit->entity, config, |
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HSIT_PAD_SOURCE); |
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*format = fmt->format; |
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format->code = hsit->inverse ? MEDIA_BUS_FMT_ARGB8888_1X32 |
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: MEDIA_BUS_FMT_AHSV8888_1X32; |
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done: |
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mutex_unlock(&hsit->entity.lock); |
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return ret; |
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} |
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static const struct v4l2_subdev_pad_ops hsit_pad_ops = { |
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.init_cfg = vsp1_entity_init_cfg, |
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.enum_mbus_code = hsit_enum_mbus_code, |
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.enum_frame_size = hsit_enum_frame_size, |
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.get_fmt = vsp1_subdev_get_pad_format, |
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.set_fmt = hsit_set_format, |
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}; |
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static const struct v4l2_subdev_ops hsit_ops = { |
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.pad = &hsit_pad_ops, |
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}; |
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/* ----------------------------------------------------------------------------- |
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* VSP1 Entity Operations |
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*/ |
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static void hsit_configure_stream(struct vsp1_entity *entity, |
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struct vsp1_pipeline *pipe, |
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struct vsp1_dl_list *dl, |
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struct vsp1_dl_body *dlb) |
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{ |
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struct vsp1_hsit *hsit = to_hsit(&entity->subdev); |
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if (hsit->inverse) |
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vsp1_hsit_write(hsit, dlb, VI6_HSI_CTRL, VI6_HSI_CTRL_EN); |
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else |
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vsp1_hsit_write(hsit, dlb, VI6_HST_CTRL, VI6_HST_CTRL_EN); |
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} |
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static const struct vsp1_entity_operations hsit_entity_ops = { |
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.configure_stream = hsit_configure_stream, |
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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_hsit *vsp1_hsit_create(struct vsp1_device *vsp1, bool inverse) |
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{ |
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struct vsp1_hsit *hsit; |
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int ret; |
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hsit = devm_kzalloc(vsp1->dev, sizeof(*hsit), GFP_KERNEL); |
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if (hsit == NULL) |
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return ERR_PTR(-ENOMEM); |
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hsit->inverse = inverse; |
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hsit->entity.ops = &hsit_entity_ops; |
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if (inverse) |
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hsit->entity.type = VSP1_ENTITY_HSI; |
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else |
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hsit->entity.type = VSP1_ENTITY_HST; |
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ret = vsp1_entity_init(vsp1, &hsit->entity, inverse ? "hsi" : "hst", |
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2, &hsit_ops, |
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MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV); |
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if (ret < 0) |
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return ERR_PTR(ret); |
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return hsit; |
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}
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