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// SPDX-License-Identifier: GPL-2.0+
#include <linux/slab.h>
#include <drm/drm_colorop.h>
#include <drm/drm_print.h>
#include <drm/drm_property.h>
#include <drm/drm_plane.h>
#include "vkms_drv.h"
static const u64 supported_tfs =
BIT(DRM_COLOROP_1D_CURVE_SRGB_EOTF) |
BIT(DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF);
static const struct drm_colorop_funcs vkms_colorop_funcs = {
.destroy = drm_colorop_destroy,
};
#define MAX_COLOR_PIPELINE_OPS 4
static int vkms_initialize_color_pipeline(struct drm_plane *plane, struct drm_prop_enum_list *list)
{
struct drm_colorop *ops[MAX_COLOR_PIPELINE_OPS];
struct drm_device *dev = plane->dev;
int ret;
int i = 0, j = 0;
memset(ops, 0, sizeof(ops));
/* 1st op: 1d curve */
ops[i] = kzalloc_obj(*ops[i]);
if (!ops[i]) {
drm_err(dev, "KMS: Failed to allocate colorop\n");
ret = -ENOMEM;
goto cleanup;
}
ret = drm_plane_colorop_curve_1d_init(dev, ops[i], plane, &vkms_colorop_funcs,
supported_tfs,
DRM_COLOROP_FLAG_ALLOW_BYPASS);
if (ret)
goto cleanup;
list->type = ops[i]->base.id;
i++;
/* 2nd op: 3x4 matrix */
ops[i] = kzalloc_obj(*ops[i]);
if (!ops[i]) {
drm_err(dev, "KMS: Failed to allocate colorop\n");
ret = -ENOMEM;
goto cleanup;
}
ret = drm_plane_colorop_ctm_3x4_init(dev, ops[i], plane, &vkms_colorop_funcs,
DRM_COLOROP_FLAG_ALLOW_BYPASS);
if (ret)
goto cleanup;
drm_colorop_set_next_property(ops[i - 1], ops[i]);
i++;
/* 3rd op: 3x4 matrix */
ops[i] = kzalloc_obj(*ops[i]);
if (!ops[i]) {
drm_err(dev, "KMS: Failed to allocate colorop\n");
ret = -ENOMEM;
goto cleanup;
}
ret = drm_plane_colorop_ctm_3x4_init(dev, ops[i], plane, &vkms_colorop_funcs,
DRM_COLOROP_FLAG_ALLOW_BYPASS);
if (ret)
goto cleanup;
drm_colorop_set_next_property(ops[i - 1], ops[i]);
i++;
/* 4th op: 1d curve */
ops[i] = kzalloc_obj(*ops[i]);
if (!ops[i]) {
drm_err(dev, "KMS: Failed to allocate colorop\n");
ret = -ENOMEM;
goto cleanup;
}
ret = drm_plane_colorop_curve_1d_init(dev, ops[i], plane, &vkms_colorop_funcs,
supported_tfs,
DRM_COLOROP_FLAG_ALLOW_BYPASS);
if (ret)
goto cleanup;
drm_colorop_set_next_property(ops[i - 1], ops[i]);
list->name = kasprintf(GFP_KERNEL, "Color Pipeline %d", ops[0]->base.id);
return 0;
cleanup:
for (j = 0; j < i; j++) {
if (ops[j]) {
drm_colorop_cleanup(ops[j]);
kfree(ops[j]);
}
}
return ret;
}
int vkms_initialize_colorops(struct drm_plane *plane)
{
struct drm_prop_enum_list pipeline = {};
int ret = 0;
/* Add color pipeline */
ret = vkms_initialize_color_pipeline(plane, &pipeline);
if (ret)
goto out;
/* Create COLOR_PIPELINE property and attach */
ret = drm_plane_create_color_pipeline_property(plane, &pipeline, 1);
kfree(pipeline.name);
out:
return ret;
}
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