// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) Icenowy Zheng <[email protected]>
*
* Based on sun4i_layer.h, which is:
* Copyright (C) 2015 Free Electrons
* Copyright (C) 2015 NextThing Co
*
* Maxime Ripard <[email protected]>
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_blend.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fb_dma_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_probe_helper.h>
#include "sun8i_mixer.h"
#include "sun8i_ui_layer.h"
#include "sun8i_ui_scaler.h"
static void sun8i_ui_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane)
{
u32 mask, val, ch_base;
ch_base = sun8i_channel_base(mixer, channel);
mask = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_MASK |
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK;
val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(plane->state->alpha >> 8);
val |= (plane->state->alpha == DRM_BLEND_ALPHA_OPAQUE) ?
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL :
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
mask, val);
}
static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane,
unsigned int zpos)
{
struct drm_plane_state *state = plane->state;
u32 src_w, src_h, dst_w, dst_h;
u32 bld_base, ch_base;
u32 outsize, insize;
u32 hphase, vphase;
DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n",
channel, overlay);
bld_base = sun8i_blender_base(mixer);
ch_base = sun8i_channel_base(mixer, channel);
src_w = drm_rect_width(&state->src) >> 16;
src_h = drm_rect_height(&state->src) >> 16;
dst_w = drm_rect_width(&state->dst);
dst_h = drm_rect_height(&state->dst);
hphase = state->src.x1 & 0xffff;
vphase = state->src.y1 & 0xffff;
insize = SUN8I_MIXER_SIZE(src_w, src_h);
outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
/* Set height and width */
DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
state->src.x1 >> 16, state->src.y1 >> 16);
DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_SIZE(ch_base, overlay),
insize);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_OVL_SIZE(ch_base),
insize);
if (insize != outsize || hphase || vphase) {
u32 hscale, vscale;
DRM_DEBUG_DRIVER("HW scaling is enabled\n");
hscale = state->src_w / state->crtc_w;
vscale = state->src_h / state->crtc_h;
sun8i_ui_scaler_setup(mixer, channel, src_w, src_h, dst_w,
dst_h, hscale, vscale, hphase, vphase);
sun8i_ui_scaler_enable(mixer, channel, true);
} else {
DRM_DEBUG_DRIVER("HW scaling is not needed\n");
sun8i_ui_scaler_enable(mixer, channel, false);
}
/* Set base coordinates */
DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
state->dst.x1, state->dst.y1);
DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
outsize);
return 0;
}
static int sun8i_ui_layer_update_formats(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
const struct drm_format_info *fmt;
u32 val, ch_base, hw_fmt;
int ret;
ch_base = sun8i_channel_base(mixer, channel);
fmt = state->fb->format;
ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
if (ret || fmt->is_yuv) {
DRM_DEBUG_DRIVER("Invalid format\n");
return -EINVAL;
}
val = hw_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK, val);
return 0;
}
static int sun8i_ui_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
struct drm_gem_dma_object *gem;
dma_addr_t dma_addr;
u32 ch_base;
int bpp;
ch_base = sun8i_channel_base(mixer, channel);
/* Get the physical address of the buffer in memory */
gem = drm_fb_dma_get_gem_obj(fb, 0);
DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->dma_addr);
/* Compute the start of the displayed memory */
bpp = fb->format->cpp[0];
dma_addr = gem->dma_addr + fb->offsets[0];
/* Fixup framebuffer address for src coordinates */
dma_addr += (state->src.x1 >> 16) * bpp;
dma_addr += (state->src.y1 >> 16) * fb->pitches[0];
/* Set the line width */
DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_PITCH(ch_base, overlay),
fb->pitches[0]);
DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &dma_addr);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(ch_base, overlay),
lower_32_bits(dma_addr));
return 0;
}
static int sun8i_ui_layer_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 sun8i_layer *layer = plane_to_sun8i_layer(plane);
struct drm_crtc *crtc = new_plane_state->crtc;
struct drm_crtc_state *crtc_state;
int min_scale, max_scale;
if (!crtc)
return 0;
crtc_state = drm_atomic_get_existing_crtc_state(state,
crtc);
if (WARN_ON(!crtc_state))
return -EINVAL;
min_scale = DRM_PLANE_NO_SCALING;
max_scale = DRM_PLANE_NO_SCALING;
if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
min_scale = SUN8I_UI_SCALER_SCALE_MIN;
max_scale = SUN8I_UI_SCALER_SCALE_MAX;
}
return drm_atomic_helper_check_plane_state(new_plane_state,
crtc_state,
min_scale, max_scale,
true, true);
}
static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane);
struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
unsigned int zpos = new_state->normalized_zpos;
struct sun8i_mixer *mixer = layer->mixer;
if (!new_state->crtc || !new_state->visible)
return;
sun8i_ui_layer_update_coord(mixer, layer->channel,
layer->overlay, plane, zpos);
sun8i_ui_layer_update_alpha(mixer, layer->channel,
layer->overlay, plane);
sun8i_ui_layer_update_formats(mixer, layer->channel,
layer->overlay, plane);
sun8i_ui_layer_update_buffer(mixer, layer->channel,
layer->overlay, plane);
}
static const struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
.atomic_check = sun8i_ui_layer_atomic_check,
.atomic_update = sun8i_ui_layer_atomic_update,
};
static const struct drm_plane_funcs sun8i_ui_layer_funcs = {
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.destroy = drm_plane_cleanup,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = drm_atomic_helper_plane_reset,
.update_plane = drm_atomic_helper_update_plane,
};
static const u32 sun8i_ui_layer_formats[] = {
DRM_FORMAT_ABGR1555,
DRM_FORMAT_ABGR4444,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_BGR565,
DRM_FORMAT_BGR888,
DRM_FORMAT_BGRA5551,
DRM_FORMAT_BGRA4444,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_BGRX8888,
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_RGBA4444,
DRM_FORMAT_RGBA5551,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB8888,
};
static const uint64_t sun8i_layer_modifiers[] = {
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
struct sun8i_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
struct sun8i_mixer *mixer,
int index)
{
enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
int channel = mixer->cfg->vi_num + index;
struct sun8i_layer *layer;
unsigned int plane_cnt;
int ret;
layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
if (!layer)
return ERR_PTR(-ENOMEM);
if (index == 0)
type = DRM_PLANE_TYPE_PRIMARY;
/* possible crtcs are set later */
ret = drm_universal_plane_init(drm, &layer->plane, 0,
&sun8i_ui_layer_funcs,
sun8i_ui_layer_formats,
ARRAY_SIZE(sun8i_ui_layer_formats),
sun8i_layer_modifiers, type, NULL);
if (ret) {
dev_err(drm->dev, "Couldn't initialize layer\n");
return ERR_PTR(ret);
}
plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
ret = drm_plane_create_alpha_property(&layer->plane);
if (ret) {
dev_err(drm->dev, "Couldn't add alpha property\n");
return ERR_PTR(ret);
}
ret = drm_plane_create_zpos_property(&layer->plane, channel,
0, plane_cnt - 1);
if (ret) {
dev_err(drm->dev, "Couldn't add zpos property\n");
return ERR_PTR(ret);
}
drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs);
layer->mixer = mixer;
layer->type = SUN8I_LAYER_TYPE_UI;
layer->channel = channel;
layer->overlay = 0;
return layer;
}
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