// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2019 NXP.
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_blend.h>
#include <drm/drm_fb_dma_helper.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_dma_helper.h>
#include "dcss-dev.h"
#include "dcss-kms.h"
static const u32 dcss_common_formats[] = {
/* RGB */
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_BGRX8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
DRM_FORMAT_RGBX1010102,
DRM_FORMAT_BGRX1010102,
DRM_FORMAT_ARGB2101010,
DRM_FORMAT_ABGR2101010,
DRM_FORMAT_RGBA1010102,
DRM_FORMAT_BGRA1010102,
};
static const u64 dcss_video_format_modifiers[] = {
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID,
};
static const u64 dcss_graphics_format_modifiers[] = {
DRM_FORMAT_MOD_VIVANTE_TILED,
DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID,
};
static inline struct dcss_plane *to_dcss_plane(struct drm_plane *p)
{
return container_of(p, struct dcss_plane, base);
}
static inline bool dcss_plane_fb_is_linear(const struct drm_framebuffer *fb)
{
return ((fb->flags & DRM_MODE_FB_MODIFIERS) == 0) ||
((fb->flags & DRM_MODE_FB_MODIFIERS) != 0 &&
fb->modifier == DRM_FORMAT_MOD_LINEAR);
}
static void dcss_plane_destroy(struct drm_plane *plane)
{
struct dcss_plane *dcss_plane = container_of(plane, struct dcss_plane,
base);
drm_plane_cleanup(plane);
kfree(dcss_plane);
}
static bool dcss_plane_format_mod_supported(struct drm_plane *plane,
u32 format,
u64 modifier)
{
switch (plane->type) {
case DRM_PLANE_TYPE_PRIMARY:
switch (format) {
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB2101010:
return modifier == DRM_FORMAT_MOD_LINEAR ||
modifier == DRM_FORMAT_MOD_VIVANTE_TILED ||
modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED;
default:
return modifier == DRM_FORMAT_MOD_LINEAR;
}
break;
case DRM_PLANE_TYPE_OVERLAY:
return modifier == DRM_FORMAT_MOD_LINEAR;
default:
return false;
}
}
static const struct drm_plane_funcs dcss_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = dcss_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.format_mod_supported = dcss_plane_format_mod_supported,
};
static bool dcss_plane_can_rotate(const struct drm_format_info *format,
bool mod_present, u64 modifier,
unsigned int rotation)
{
bool linear_format = !mod_present || modifier == DRM_FORMAT_MOD_LINEAR;
u32 supported_rotation = DRM_MODE_ROTATE_0;
if (!format->is_yuv && linear_format)
supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
DRM_MODE_REFLECT_MASK;
else if (!format->is_yuv &&
(modifier == DRM_FORMAT_MOD_VIVANTE_TILED ||
modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED))
supported_rotation = DRM_MODE_ROTATE_MASK |
DRM_MODE_REFLECT_MASK;
else if (format->is_yuv && linear_format &&
(format->format == DRM_FORMAT_NV12 ||
format->format == DRM_FORMAT_NV21))
supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
DRM_MODE_REFLECT_MASK;
return !!(rotation & supported_rotation);
}
static bool dcss_plane_is_source_size_allowed(u16 src_w, u16 src_h, u32 pix_fmt)
{
if (src_w < 64 &&
(pix_fmt == DRM_FORMAT_NV12 || pix_fmt == DRM_FORMAT_NV21))
return false;
else if (src_w < 32 &&
(pix_fmt == DRM_FORMAT_UYVY || pix_fmt == DRM_FORMAT_VYUY ||
pix_fmt == DRM_FORMAT_YUYV || pix_fmt == DRM_FORMAT_YVYU))
return false;
return src_w >= 16 && src_h >= 8;
}
static int dcss_plane_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
plane);
struct dcss_plane *dcss_plane = to_dcss_plane(plane);
struct dcss_dev *dcss = plane->dev->dev_private;
struct drm_framebuffer *fb = new_plane_state->fb;
bool is_primary_plane = plane->type == DRM_PLANE_TYPE_PRIMARY;
struct drm_gem_dma_object *dma_obj;
struct drm_crtc_state *crtc_state;
int hdisplay, vdisplay;
int min, max;
int ret;
if (!fb || !new_plane_state->crtc)
return 0;
dma_obj = drm_fb_dma_get_gem_obj(fb, 0);
WARN_ON(!dma_obj);
crtc_state = drm_atomic_get_existing_crtc_state(state,
new_plane_state->crtc);
hdisplay = crtc_state->adjusted_mode.hdisplay;
vdisplay = crtc_state->adjusted_mode.vdisplay;
if (!dcss_plane_is_source_size_allowed(new_plane_state->src_w >> 16,
new_plane_state->src_h >> 16,
fb->format->format)) {
DRM_DEBUG_KMS("Source plane size is not allowed!\n");
return -EINVAL;
}
dcss_scaler_get_min_max_ratios(dcss->scaler, dcss_plane->ch_num,
&min, &max);
ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
min, max, !is_primary_plane,
false);
if (ret)
return ret;
if (!new_plane_state->visible)
return 0;
if (!dcss_plane_can_rotate(fb->format,
!!(fb->flags & DRM_MODE_FB_MODIFIERS),
fb->modifier,
new_plane_state->rotation)) {
DRM_DEBUG_KMS("requested rotation is not allowed!\n");
return -EINVAL;
}
if ((new_plane_state->crtc_x < 0 || new_plane_state->crtc_y < 0 ||
new_plane_state->crtc_x + new_plane_state->crtc_w > hdisplay ||
new_plane_state->crtc_y + new_plane_state->crtc_h > vdisplay) &&
!dcss_plane_fb_is_linear(fb)) {
DRM_DEBUG_KMS("requested cropping operation is not allowed!\n");
return -EINVAL;
}
if ((fb->flags & DRM_MODE_FB_MODIFIERS) &&
!plane->funcs->format_mod_supported(plane,
fb->format->format,
fb->modifier)) {
DRM_DEBUG_KMS("Invalid modifier: %llx", fb->modifier);
return -EINVAL;
}
return 0;
}
static void dcss_plane_atomic_set_base(struct dcss_plane *dcss_plane)
{
struct drm_plane *plane = &dcss_plane->base;
struct drm_plane_state *state = plane->state;
struct dcss_dev *dcss = plane->dev->dev_private;
struct drm_framebuffer *fb = state->fb;
const struct drm_format_info *format = fb->format;
struct drm_gem_dma_object *dma_obj = drm_fb_dma_get_gem_obj(fb, 0);
unsigned long p1_ba = 0, p2_ba = 0;
if (!format->is_yuv ||
format->format == DRM_FORMAT_NV12 ||
format->format == DRM_FORMAT_NV21)
p1_ba = dma_obj->dma_addr + fb->offsets[0] +
fb->pitches[0] * (state->src.y1 >> 16) +
format->char_per_block[0] * (state->src.x1 >> 16);
else if (format->format == DRM_FORMAT_UYVY ||
format->format == DRM_FORMAT_VYUY ||
format->format == DRM_FORMAT_YUYV ||
format->format == DRM_FORMAT_YVYU)
p1_ba = dma_obj->dma_addr + fb->offsets[0] +
fb->pitches[0] * (state->src.y1 >> 16) +
2 * format->char_per_block[0] * (state->src.x1 >> 17);
if (format->format == DRM_FORMAT_NV12 ||
format->format == DRM_FORMAT_NV21)
p2_ba = dma_obj->dma_addr + fb->offsets[1] +
(((fb->pitches[1] >> 1) * (state->src.y1 >> 17) +
(state->src.x1 >> 17)) << 1);
dcss_dpr_addr_set(dcss->dpr, dcss_plane->ch_num, p1_ba, p2_ba,
fb->pitches[0]);
}
static bool dcss_plane_needs_setup(struct drm_plane_state *state,
struct drm_plane_state *old_state)
{
struct drm_framebuffer *fb = state->fb;
struct drm_framebuffer *old_fb = old_state->fb;
return state->crtc_x != old_state->crtc_x ||
state->crtc_y != old_state->crtc_y ||
state->crtc_w != old_state->crtc_w ||
state->crtc_h != old_state->crtc_h ||
state->src_x != old_state->src_x ||
state->src_y != old_state->src_y ||
state->src_w != old_state->src_w ||
state->src_h != old_state->src_h ||
fb->format->format != old_fb->format->format ||
fb->modifier != old_fb->modifier ||
state->rotation != old_state->rotation ||
state->scaling_filter != old_state->scaling_filter;
}
static void dcss_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
plane);
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane);
struct dcss_plane *dcss_plane = to_dcss_plane(plane);
struct dcss_dev *dcss = plane->dev->dev_private;
struct drm_framebuffer *fb = new_state->fb;
struct drm_crtc_state *crtc_state;
bool modifiers_present;
u32 src_w, src_h, dst_w, dst_h;
struct drm_rect src, dst;
bool enable = true;
bool is_rotation_90_or_270;
if (!fb || !new_state->crtc || !new_state->visible)
return;
crtc_state = new_state->crtc->state;
modifiers_present = !!(fb->flags & DRM_MODE_FB_MODIFIERS);
if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state) &&
!dcss_plane_needs_setup(new_state, old_state)) {
dcss_plane_atomic_set_base(dcss_plane);
return;
}
src = plane->state->src;
dst = plane->state->dst;
/*
* The width and height after clipping.
*/
src_w = drm_rect_width(&src) >> 16;
src_h = drm_rect_height(&src) >> 16;
dst_w = drm_rect_width(&dst);
dst_h = drm_rect_height(&dst);
if (plane->type == DRM_PLANE_TYPE_OVERLAY &&
modifiers_present && fb->modifier == DRM_FORMAT_MOD_LINEAR)
modifiers_present = false;
dcss_dpr_format_set(dcss->dpr, dcss_plane->ch_num,
new_state->fb->format,
modifiers_present ? fb->modifier :
DRM_FORMAT_MOD_LINEAR);
dcss_dpr_set_res(dcss->dpr, dcss_plane->ch_num, src_w, src_h);
dcss_dpr_set_rotation(dcss->dpr, dcss_plane->ch_num,
new_state->rotation);
dcss_plane_atomic_set_base(dcss_plane);
is_rotation_90_or_270 = new_state->rotation & (DRM_MODE_ROTATE_90 |
DRM_MODE_ROTATE_270);
dcss_scaler_set_filter(dcss->scaler, dcss_plane->ch_num,
new_state->scaling_filter);
dcss_scaler_setup(dcss->scaler, dcss_plane->ch_num,
new_state->fb->format,
is_rotation_90_or_270 ? src_h : src_w,
is_rotation_90_or_270 ? src_w : src_h,
dst_w, dst_h,
drm_mode_vrefresh(&crtc_state->mode));
dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
dst.x1, dst.y1, dst_w, dst_h);
dcss_dtg_plane_alpha_set(dcss->dtg, dcss_plane->ch_num,
fb->format, new_state->alpha >> 8);
if (!dcss_plane->ch_num && (new_state->alpha >> 8) == 0)
enable = false;
dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, enable);
dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, enable);
if (!enable)
dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
0, 0, 0, 0);
dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, enable);
}
static void dcss_plane_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct dcss_plane *dcss_plane = to_dcss_plane(plane);
struct dcss_dev *dcss = plane->dev->dev_private;
dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, false);
dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, false);
dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num, 0, 0, 0, 0);
dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, false);
}
static const struct drm_plane_helper_funcs dcss_plane_helper_funcs = {
.atomic_check = dcss_plane_atomic_check,
.atomic_update = dcss_plane_atomic_update,
.atomic_disable = dcss_plane_atomic_disable,
};
struct dcss_plane *dcss_plane_init(struct drm_device *drm,
unsigned int possible_crtcs,
enum drm_plane_type type,
unsigned int zpos)
{
struct dcss_plane *dcss_plane;
const u64 *format_modifiers = dcss_video_format_modifiers;
int ret;
if (zpos > 2)
return ERR_PTR(-EINVAL);
dcss_plane = kzalloc(sizeof(*dcss_plane), GFP_KERNEL);
if (!dcss_plane) {
DRM_ERROR("failed to allocate plane\n");
return ERR_PTR(-ENOMEM);
}
if (type == DRM_PLANE_TYPE_PRIMARY)
format_modifiers = dcss_graphics_format_modifiers;
ret = drm_universal_plane_init(drm, &dcss_plane->base, possible_crtcs,
&dcss_plane_funcs, dcss_common_formats,
ARRAY_SIZE(dcss_common_formats),
format_modifiers, type, NULL);
if (ret) {
DRM_ERROR("failed to initialize plane\n");
kfree(dcss_plane);
return ERR_PTR(ret);
}
drm_plane_helper_add(&dcss_plane->base, &dcss_plane_helper_funcs);
ret = drm_plane_create_zpos_immutable_property(&dcss_plane->base, zpos);
if (ret)
return ERR_PTR(ret);
drm_plane_create_scaling_filter_property(&dcss_plane->base,
BIT(DRM_SCALING_FILTER_DEFAULT) |
BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
drm_plane_create_rotation_property(&dcss_plane->base,
DRM_MODE_ROTATE_0,
DRM_MODE_ROTATE_0 |
DRM_MODE_ROTATE_90 |
DRM_MODE_ROTATE_180 |
DRM_MODE_ROTATE_270 |
DRM_MODE_REFLECT_X |
DRM_MODE_REFLECT_Y);
dcss_plane->ch_num = zpos;
return dcss_plane;
}
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