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OpenCloudOS-Kernel/drivers/gpu/drm/sun4i/sun8i_ui_layer.c

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/*
* Copyright (C) Icenowy Zheng <icenowy@aosc.io>
*
* Based on sun4i_layer.h, which is:
* Copyright (C) 2015 Free Electrons
* Copyright (C) 2015 NextThing Co
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drmP.h>
#include "sun8i_ui_layer.h"
#include "sun8i_mixer.h"
#include "sun8i_ui_scaler.h"
static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
int overlay, bool enable)
{
u32 val;
DRM_DEBUG_DRIVER("%sabling channel %d overlay %d\n",
enable ? "En" : "Dis", channel, overlay);
if (enable)
val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN;
else
val = 0;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(channel, overlay),
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN, val);
if (enable)
val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel);
else
val = 0;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_BLEND_PIPE_CTL,
SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel), val);
}
static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
int overlay, struct drm_plane *plane)
{
struct drm_plane_state *state = plane->state;
u32 src_w, src_h, dst_w, dst_h;
u32 outsize, insize;
u32 hphase, vphase;
DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n",
channel, overlay);
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);
if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
bool interlaced = false;
u32 val;
DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
dst_w, dst_h);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_GLOBAL_SIZE,
outsize);
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_OUTSIZE,
outsize);
if (state->crtc)
interlaced = state->crtc->state->adjusted_mode.flags
& DRM_MODE_FLAG_INTERLACE;
if (interlaced)
val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
else
val = 0;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_BLEND_OUTCTL,
SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
val);
DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n",
interlaced ? "on" : "off");
}
/* 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(channel, overlay),
insize);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_OVL_SIZE(channel),
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(channel),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_INSIZE(channel),
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 de2_fmt_info *fmt_info;
u32 val;
fmt_info = sun8i_mixer_format_info(state->fb->format->format);
if (!fmt_info || !fmt_info->rgb) {
DRM_DEBUG_DRIVER("Invalid format\n");
return -EINVAL;
}
val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
regmap_update_bits(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(channel, 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_cma_object *gem;
dma_addr_t paddr;
int bpp;
/* Get the physical address of the buffer in memory */
gem = drm_fb_cma_get_gem_obj(fb, 0);
DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
/* Compute the start of the displayed memory */
bpp = fb->format->cpp[0];
paddr = gem->paddr + fb->offsets[0];
/* Fixup framebuffer address for src coordinates */
paddr += (state->src.x1 >> 16) * bpp;
paddr += (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(channel, overlay),
fb->pitches[0]);
DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(channel, overlay),
lower_32_bits(paddr));
return 0;
}
static int sun8i_ui_layer_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
struct drm_crtc *crtc = state->crtc;
struct drm_crtc_state *crtc_state;
int min_scale, max_scale;
struct drm_rect clip;
if (!crtc)
return 0;
crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
if (WARN_ON(!crtc_state))
return -EINVAL;
clip.x1 = 0;
clip.y1 = 0;
clip.x2 = crtc_state->adjusted_mode.hdisplay;
clip.y2 = crtc_state->adjusted_mode.vdisplay;
min_scale = DRM_PLANE_HELPER_NO_SCALING;
max_scale = DRM_PLANE_HELPER_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(state, crtc_state, &clip,
min_scale, max_scale,
true, true);
}
static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;
sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false);
}
static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;
if (!plane->state->visible) {
sun8i_ui_layer_enable(mixer, layer->channel,
layer->overlay, false);
return;
}
sun8i_ui_layer_update_coord(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);
sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, true);
}
static struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
.atomic_check = sun8i_ui_layer_atomic_check,
.atomic_disable = sun8i_ui_layer_atomic_disable,
.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,
};
struct sun8i_ui_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_ui_layer *layer;
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),
NULL, type, NULL);
if (ret) {
dev_err(drm->dev, "Couldn't initialize layer\n");
return ERR_PTR(ret);
}
/* fixed zpos for now */
ret = drm_plane_create_zpos_immutable_property(&layer->plane, channel);
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->channel = channel;
layer->overlay = 0;
return layer;
}
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