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linux/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c

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/*
* Copyright (C) 2014 Free Electrons
* Copyright (C) 2014 Atmel
*
* Author: Boris BREZILLON <boris.brezillon@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 version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "atmel_hlcdc_dc.h"
/**
* Atmel HLCDC Plane state structure.
*
* @base: DRM plane state
* @crtc_x: x position of the plane relative to the CRTC
* @crtc_y: y position of the plane relative to the CRTC
* @crtc_w: visible width of the plane
* @crtc_h: visible height of the plane
* @src_x: x buffer position
* @src_y: y buffer position
* @src_w: buffer width
* @src_h: buffer height
* @alpha: alpha blending of the plane
* @bpp: bytes per pixel deduced from pixel_format
* @offsets: offsets to apply to the GEM buffers
* @xstride: value to add to the pixel pointer between each line
* @pstride: value to add to the pixel pointer between each pixel
* @nplanes: number of planes (deduced from pixel_format)
* @prepared: plane update has been prepared
*/
struct atmel_hlcdc_plane_state {
struct drm_plane_state base;
int crtc_x;
int crtc_y;
unsigned int crtc_w;
unsigned int crtc_h;
uint32_t src_x;
uint32_t src_y;
uint32_t src_w;
uint32_t src_h;
u8 alpha;
bool disc_updated;
int disc_x;
int disc_y;
int disc_w;
int disc_h;
int ahb_id;
/* These fields are private and should not be touched */
int bpp[ATMEL_HLCDC_MAX_PLANES];
unsigned int offsets[ATMEL_HLCDC_MAX_PLANES];
int xstride[ATMEL_HLCDC_MAX_PLANES];
int pstride[ATMEL_HLCDC_MAX_PLANES];
int nplanes;
bool prepared;
};
static inline struct atmel_hlcdc_plane_state *
drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s)
{
return container_of(s, struct atmel_hlcdc_plane_state, base);
}
#define SUBPIXEL_MASK 0xffff
static uint32_t rgb_formats[] = {
DRM_FORMAT_XRGB4444,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_RGBA4444,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_RGBA8888,
};
struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = {
.formats = rgb_formats,
.nformats = ARRAY_SIZE(rgb_formats),
};
static uint32_t rgb_and_yuv_formats[] = {
DRM_FORMAT_XRGB4444,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_RGBA4444,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_AYUV,
DRM_FORMAT_YUYV,
DRM_FORMAT_UYVY,
DRM_FORMAT_YVYU,
DRM_FORMAT_VYUY,
DRM_FORMAT_NV21,
DRM_FORMAT_NV61,
DRM_FORMAT_YUV422,
DRM_FORMAT_YUV420,
};
struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = {
.formats = rgb_and_yuv_formats,
.nformats = ARRAY_SIZE(rgb_and_yuv_formats),
};
static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode)
{
switch (format) {
case DRM_FORMAT_XRGB4444:
*mode = ATMEL_HLCDC_XRGB4444_MODE;
break;
case DRM_FORMAT_ARGB4444:
*mode = ATMEL_HLCDC_ARGB4444_MODE;
break;
case DRM_FORMAT_RGBA4444:
*mode = ATMEL_HLCDC_RGBA4444_MODE;
break;
case DRM_FORMAT_RGB565:
*mode = ATMEL_HLCDC_RGB565_MODE;
break;
case DRM_FORMAT_RGB888:
*mode = ATMEL_HLCDC_RGB888_MODE;
break;
case DRM_FORMAT_ARGB1555:
*mode = ATMEL_HLCDC_ARGB1555_MODE;
break;
case DRM_FORMAT_XRGB8888:
*mode = ATMEL_HLCDC_XRGB8888_MODE;
break;
case DRM_FORMAT_ARGB8888:
*mode = ATMEL_HLCDC_ARGB8888_MODE;
break;
case DRM_FORMAT_RGBA8888:
*mode = ATMEL_HLCDC_RGBA8888_MODE;
break;
case DRM_FORMAT_AYUV:
*mode = ATMEL_HLCDC_AYUV_MODE;
break;
case DRM_FORMAT_YUYV:
*mode = ATMEL_HLCDC_YUYV_MODE;
break;
case DRM_FORMAT_UYVY:
*mode = ATMEL_HLCDC_UYVY_MODE;
break;
case DRM_FORMAT_YVYU:
*mode = ATMEL_HLCDC_YVYU_MODE;
break;
case DRM_FORMAT_VYUY:
*mode = ATMEL_HLCDC_VYUY_MODE;
break;
case DRM_FORMAT_NV21:
*mode = ATMEL_HLCDC_NV21_MODE;
break;
case DRM_FORMAT_NV61:
*mode = ATMEL_HLCDC_NV61_MODE;
break;
case DRM_FORMAT_YUV420:
*mode = ATMEL_HLCDC_YUV420_MODE;
break;
case DRM_FORMAT_YUV422:
*mode = ATMEL_HLCDC_YUV422_MODE;
break;
default:
return -ENOTSUPP;
}
return 0;
}
static bool atmel_hlcdc_format_embeds_alpha(u32 format)
{
int i;
for (i = 0; i < sizeof(format); i++) {
char tmp = (format >> (8 * i)) & 0xff;
if (tmp == 'A')
return true;
}
return false;
}
static u32 heo_downscaling_xcoef[] = {
0x11343311,
0x000000f7,
0x1635300c,
0x000000f9,
0x1b362c08,
0x000000fb,
0x1f372804,
0x000000fe,
0x24382400,
0x00000000,
0x28371ffe,
0x00000004,
0x2c361bfb,
0x00000008,
0x303516f9,
0x0000000c,
};
static u32 heo_downscaling_ycoef[] = {
0x00123737,
0x00173732,
0x001b382d,
0x001f3928,
0x00243824,
0x0028391f,
0x002d381b,
0x00323717,
};
static u32 heo_upscaling_xcoef[] = {
0xf74949f7,
0x00000000,
0xf55f33fb,
0x000000fe,
0xf5701efe,
0x000000ff,
0xf87c0dff,
0x00000000,
0x00800000,
0x00000000,
0x0d7cf800,
0x000000ff,
0x1e70f5ff,
0x000000fe,
0x335ff5fe,
0x000000fb,
};
static u32 heo_upscaling_ycoef[] = {
0x00004040,
0x00075920,
0x00056f0c,
0x00027b03,
0x00008000,
0x00037b02,
0x000c6f05,
0x00205907,
};
static void
atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
const struct atmel_hlcdc_layer_cfg_layout *layout =
&plane->layer.desc->layout;
if (layout->size)
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->size,
0xffffffff,
(state->crtc_w - 1) |
((state->crtc_h - 1) << 16));
if (layout->memsize)
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->memsize,
0xffffffff,
(state->src_w - 1) |
((state->src_h - 1) << 16));
if (layout->pos)
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->pos,
0xffffffff,
state->crtc_x |
(state->crtc_y << 16));
/* TODO: rework the rescaling part */
if (state->crtc_w != state->src_w || state->crtc_h != state->src_h) {
u32 factor_reg = 0;
if (state->crtc_w != state->src_w) {
int i;
u32 factor;
u32 *coeff_tab = heo_upscaling_xcoef;
u32 max_memsize;
if (state->crtc_w < state->src_w)
coeff_tab = heo_downscaling_xcoef;
for (i = 0; i < ARRAY_SIZE(heo_upscaling_xcoef); i++)
atmel_hlcdc_layer_update_cfg(&plane->layer,
17 + i,
0xffffffff,
coeff_tab[i]);
factor = ((8 * 256 * state->src_w) - (256 * 4)) /
state->crtc_w;
factor++;
max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
2048;
if (max_memsize > state->src_w)
factor--;
factor_reg |= factor | 0x80000000;
}
if (state->crtc_h != state->src_h) {
int i;
u32 factor;
u32 *coeff_tab = heo_upscaling_ycoef;
u32 max_memsize;
if (state->crtc_h < state->src_h)
coeff_tab = heo_downscaling_ycoef;
for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++)
atmel_hlcdc_layer_update_cfg(&plane->layer,
33 + i,
0xffffffff,
coeff_tab[i]);
factor = ((8 * 256 * state->src_h) - (256 * 4)) /
state->crtc_h;
factor++;
max_memsize = ((factor * state->crtc_h) + (256 * 4)) /
2048;
if (max_memsize > state->src_h)
factor--;
factor_reg |= (factor << 16) | 0x80000000;
}
atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff,
factor_reg);
} else {
atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff, 0);
}
}
static void
atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
const struct atmel_hlcdc_layer_cfg_layout *layout =
&plane->layer.desc->layout;
unsigned int cfg = ATMEL_HLCDC_LAYER_DMA;
if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
ATMEL_HLCDC_LAYER_ITER;
if (atmel_hlcdc_format_embeds_alpha(state->base.fb->format->format))
cfg |= ATMEL_HLCDC_LAYER_LAEN;
else
cfg |= ATMEL_HLCDC_LAYER_GAEN |
ATMEL_HLCDC_LAYER_GA(state->alpha);
}
atmel_hlcdc_layer_update_cfg(&plane->layer,
ATMEL_HLCDC_LAYER_DMA_CFG_ID,
ATMEL_HLCDC_LAYER_DMA_BLEN_MASK |
ATMEL_HLCDC_LAYER_DMA_SIF,
ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 |
state->ahb_id);
atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
ATMEL_HLCDC_LAYER_ITER2BL |
ATMEL_HLCDC_LAYER_ITER |
ATMEL_HLCDC_LAYER_GAEN |
ATMEL_HLCDC_LAYER_GA_MASK |
ATMEL_HLCDC_LAYER_LAEN |
ATMEL_HLCDC_LAYER_OVR |
ATMEL_HLCDC_LAYER_DMA, cfg);
}
static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
u32 cfg;
int ret;
ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->format->format,
&cfg);
if (ret)
return;
if ((state->base.fb->format->format == DRM_FORMAT_YUV422 ||
state->base.fb->format->format == DRM_FORMAT_NV61) &&
drm_rotation_90_or_270(state->base.rotation))
cfg |= ATMEL_HLCDC_YUV422ROT;
atmel_hlcdc_layer_update_cfg(&plane->layer,
ATMEL_HLCDC_LAYER_FORMAT_CFG_ID,
0xffffffff,
cfg);
/*
* Rotation optimization is not working on RGB888 (rotation is still
* working but without any optimization).
*/
if (state->base.fb->format->format == DRM_FORMAT_RGB888)
cfg = ATMEL_HLCDC_LAYER_DMA_ROTDIS;
else
cfg = 0;
atmel_hlcdc_layer_update_cfg(&plane->layer,
ATMEL_HLCDC_LAYER_DMA_CFG_ID,
ATMEL_HLCDC_LAYER_DMA_ROTDIS, cfg);
}
static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
struct atmel_hlcdc_layer *layer = &plane->layer;
const struct atmel_hlcdc_layer_cfg_layout *layout =
&layer->desc->layout;
int i;
atmel_hlcdc_layer_update_set_fb(&plane->layer, state->base.fb,
state->offsets);
for (i = 0; i < state->nplanes; i++) {
if (layout->xstride[i]) {
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->xstride[i],
0xffffffff,
state->xstride[i]);
}
if (layout->pstride[i]) {
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->pstride[i],
0xffffffff,
state->pstride[i]);
}
}
}
int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state)
{
unsigned int ahb_load[2] = { };
struct drm_plane *plane;
drm_atomic_crtc_state_for_each_plane(plane, c_state) {
struct atmel_hlcdc_plane_state *plane_state;
struct drm_plane_state *plane_s;
unsigned int pixels, load = 0;
int i;
plane_s = drm_atomic_get_plane_state(c_state->state, plane);
if (IS_ERR(plane_s))
return PTR_ERR(plane_s);
plane_state =
drm_plane_state_to_atmel_hlcdc_plane_state(plane_s);
pixels = (plane_state->src_w * plane_state->src_h) -
(plane_state->disc_w * plane_state->disc_h);
for (i = 0; i < plane_state->nplanes; i++)
load += pixels * plane_state->bpp[i];
if (ahb_load[0] <= ahb_load[1])
plane_state->ahb_id = 0;
else
plane_state->ahb_id = 1;
ahb_load[plane_state->ahb_id] += load;
}
return 0;
}
int
atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
{
int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0;
const struct atmel_hlcdc_layer_cfg_layout *layout;
struct atmel_hlcdc_plane_state *primary_state;
struct drm_plane_state *primary_s;
struct atmel_hlcdc_plane *primary;
struct drm_plane *ovl;
primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary);
layout = &primary->layer.desc->layout;
if (!layout->disc_pos || !layout->disc_size)
return 0;
primary_s = drm_atomic_get_plane_state(c_state->state,
&primary->base);
if (IS_ERR(primary_s))
return PTR_ERR(primary_s);
primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s);
drm_atomic_crtc_state_for_each_plane(ovl, c_state) {
struct atmel_hlcdc_plane_state *ovl_state;
struct drm_plane_state *ovl_s;
if (ovl == c_state->crtc->primary)
continue;
ovl_s = drm_atomic_get_plane_state(c_state->state, ovl);
if (IS_ERR(ovl_s))
return PTR_ERR(ovl_s);
ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
if (!ovl_s->fb ||
atmel_hlcdc_format_embeds_alpha(ovl_s->fb->format->format) ||
ovl_state->alpha != 255)
continue;
/* TODO: implement a smarter hidden area detection */
if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w)
continue;
disc_x = ovl_state->crtc_x;
disc_y = ovl_state->crtc_y;
disc_h = ovl_state->crtc_h;
disc_w = ovl_state->crtc_w;
}
if (disc_x == primary_state->disc_x &&
disc_y == primary_state->disc_y &&
disc_w == primary_state->disc_w &&
disc_h == primary_state->disc_h)
return 0;
primary_state->disc_x = disc_x;
primary_state->disc_y = disc_y;
primary_state->disc_w = disc_w;
primary_state->disc_h = disc_h;
primary_state->disc_updated = true;
return 0;
}
static void
atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
const struct atmel_hlcdc_layer_cfg_layout *layout =
&plane->layer.desc->layout;
int disc_surface = 0;
if (!state->disc_updated)
return;
disc_surface = state->disc_h * state->disc_w;
atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
ATMEL_HLCDC_LAYER_DISCEN,
disc_surface ? ATMEL_HLCDC_LAYER_DISCEN : 0);
if (!disc_surface)
return;
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->disc_pos,
0xffffffff,
state->disc_x | (state->disc_y << 16));
atmel_hlcdc_layer_update_cfg(&plane->layer,
layout->disc_size,
0xffffffff,
(state->disc_w - 1) |
((state->disc_h - 1) << 16));
}
static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
struct drm_plane_state *s)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
const struct atmel_hlcdc_layer_cfg_layout *layout =
&plane->layer.desc->layout;
struct drm_framebuffer *fb = state->base.fb;
const struct drm_display_mode *mode;
struct drm_crtc_state *crtc_state;
unsigned int patched_crtc_w;
unsigned int patched_crtc_h;
unsigned int patched_src_w;
unsigned int patched_src_h;
unsigned int tmp;
int x_offset = 0;
int y_offset = 0;
int hsub = 1;
int vsub = 1;
int i;
if (!state->base.crtc || !fb)
return 0;
crtc_state = drm_atomic_get_existing_crtc_state(s->state, s->crtc);
mode = &crtc_state->adjusted_mode;
state->src_x = s->src_x;
state->src_y = s->src_y;
state->src_h = s->src_h;
state->src_w = s->src_w;
state->crtc_x = s->crtc_x;
state->crtc_y = s->crtc_y;
state->crtc_h = s->crtc_h;
state->crtc_w = s->crtc_w;
if ((state->src_x | state->src_y | state->src_w | state->src_h) &
SUBPIXEL_MASK)
return -EINVAL;
state->src_x >>= 16;
state->src_y >>= 16;
state->src_w >>= 16;
state->src_h >>= 16;
state->nplanes = fb->format->num_planes;
if (state->nplanes > ATMEL_HLCDC_MAX_PLANES)
return -EINVAL;
/*
* Swap width and size in case of 90 or 270 degrees rotation
*/
if (drm_rotation_90_or_270(state->base.rotation)) {
tmp = state->crtc_w;
state->crtc_w = state->crtc_h;
state->crtc_h = tmp;
tmp = state->src_w;
state->src_w = state->src_h;
state->src_h = tmp;
}
if (state->crtc_x + state->crtc_w > mode->hdisplay)
patched_crtc_w = mode->hdisplay - state->crtc_x;
else
patched_crtc_w = state->crtc_w;
if (state->crtc_x < 0) {
patched_crtc_w += state->crtc_x;
x_offset = -state->crtc_x;
state->crtc_x = 0;
}
if (state->crtc_y + state->crtc_h > mode->vdisplay)
patched_crtc_h = mode->vdisplay - state->crtc_y;
else
patched_crtc_h = state->crtc_h;
if (state->crtc_y < 0) {
patched_crtc_h += state->crtc_y;
y_offset = -state->crtc_y;
state->crtc_y = 0;
}
patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w,
state->crtc_w);
patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h,
state->crtc_h);
hsub = drm_format_horz_chroma_subsampling(fb->format->format);
vsub = drm_format_vert_chroma_subsampling(fb->format->format);
for (i = 0; i < state->nplanes; i++) {
unsigned int offset = 0;
int xdiv = i ? hsub : 1;
int ydiv = i ? vsub : 1;
state->bpp[i] = fb->format->cpp[i];
if (!state->bpp[i])
return -EINVAL;
switch (state->base.rotation & DRM_ROTATE_MASK) {
case DRM_ROTATE_90:
offset = ((y_offset + state->src_y + patched_src_w - 1) /
ydiv) * fb->pitches[i];
offset += ((x_offset + state->src_x) / xdiv) *
state->bpp[i];
state->xstride[i] = ((patched_src_w - 1) / ydiv) *
fb->pitches[i];
state->pstride[i] = -fb->pitches[i] - state->bpp[i];
break;
case DRM_ROTATE_180:
offset = ((y_offset + state->src_y + patched_src_h - 1) /
ydiv) * fb->pitches[i];
offset += ((x_offset + state->src_x + patched_src_w - 1) /
xdiv) * state->bpp[i];
state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) *
state->bpp[i]) - fb->pitches[i];
state->pstride[i] = -2 * state->bpp[i];
break;
case DRM_ROTATE_270:
offset = ((y_offset + state->src_y) / ydiv) *
fb->pitches[i];
offset += ((x_offset + state->src_x + patched_src_h - 1) /
xdiv) * state->bpp[i];
state->xstride[i] = -(((patched_src_w - 1) / ydiv) *
fb->pitches[i]) -
(2 * state->bpp[i]);
state->pstride[i] = fb->pitches[i] - state->bpp[i];
break;
case DRM_ROTATE_0:
default:
offset = ((y_offset + state->src_y) / ydiv) *
fb->pitches[i];
offset += ((x_offset + state->src_x) / xdiv) *
state->bpp[i];
state->xstride[i] = fb->pitches[i] -
((patched_src_w / xdiv) *
state->bpp[i]);
state->pstride[i] = 0;
break;
}
state->offsets[i] = offset + fb->offsets[i];
}
state->src_w = patched_src_w;
state->src_h = patched_src_h;
state->crtc_w = patched_crtc_w;
state->crtc_h = patched_crtc_h;
if (!layout->size &&
(mode->hdisplay != state->crtc_w ||
mode->vdisplay != state->crtc_h))
return -EINVAL;
if (plane->layer.desc->max_height &&
state->crtc_h > plane->layer.desc->max_height)
return -EINVAL;
if (plane->layer.desc->max_width &&
state->crtc_w > plane->layer.desc->max_width)
return -EINVAL;
if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
(!layout->memsize ||
atmel_hlcdc_format_embeds_alpha(state->base.fb->format->format)))
return -EINVAL;
if (state->crtc_x < 0 || state->crtc_y < 0)
return -EINVAL;
if (state->crtc_w + state->crtc_x > mode->hdisplay ||
state->crtc_h + state->crtc_y > mode->vdisplay)
return -EINVAL;
return 0;
}
static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p,
struct drm_plane_state *new_state)
{
/*
* FIXME: we should avoid this const -> non-const cast but it's
* currently the only solution we have to modify the ->prepared
* state and rollback the update request.
* Ideally, we should rework the code to attach all the resources
* to atmel_hlcdc_plane_state (including the DMA desc allocation),
* but this require a complete rework of the atmel_hlcdc_layer
* code.
*/
struct drm_plane_state *s = (struct drm_plane_state *)new_state;
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
int ret;
ret = atmel_hlcdc_layer_update_start(&plane->layer);
if (!ret)
state->prepared = true;
return ret;
}
static void atmel_hlcdc_plane_cleanup_fb(struct drm_plane *p,
struct drm_plane_state *old_state)
{
/*
* FIXME: we should avoid this const -> non-const cast but it's
* currently the only solution we have to modify the ->prepared
* state and rollback the update request.
* Ideally, we should rework the code to attach all the resources
* to atmel_hlcdc_plane_state (including the DMA desc allocation),
* but this require a complete rework of the atmel_hlcdc_layer
* code.
*/
struct drm_plane_state *s = (struct drm_plane_state *)old_state;
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
/*
* The Request has already been applied or cancelled, nothing to do
* here.
*/
if (!state->prepared)
return;
atmel_hlcdc_layer_update_rollback(&plane->layer);
state->prepared = false;
}
static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
struct drm_plane_state *old_s)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
if (!p->state->crtc || !p->state->fb)
return;
atmel_hlcdc_plane_update_pos_and_size(plane, state);
atmel_hlcdc_plane_update_general_settings(plane, state);
atmel_hlcdc_plane_update_format(plane, state);
atmel_hlcdc_plane_update_buffers(plane, state);
atmel_hlcdc_plane_update_disc_area(plane, state);
atmel_hlcdc_layer_update_commit(&plane->layer);
}
static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
struct drm_plane_state *old_state)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
atmel_hlcdc_layer_disable(&plane->layer);
}
static void atmel_hlcdc_plane_destroy(struct drm_plane *p)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
if (plane->base.fb)
drm_framebuffer_unreference(plane->base.fb);
atmel_hlcdc_layer_cleanup(p->dev, &plane->layer);
drm_plane_cleanup(p);
devm_kfree(p->dev->dev, plane);
}
static int atmel_hlcdc_plane_atomic_set_property(struct drm_plane *p,
struct drm_plane_state *s,
struct drm_property *property,
uint64_t val)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_properties *props = plane->properties;
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
if (property == props->alpha)
state->alpha = val;
else
return -EINVAL;
return 0;
}
static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p,
const struct drm_plane_state *s,
struct drm_property *property,
uint64_t *val)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
struct atmel_hlcdc_plane_properties *props = plane->properties;
const struct atmel_hlcdc_plane_state *state =
container_of(s, const struct atmel_hlcdc_plane_state, base);
if (property == props->alpha)
*val = state->alpha;
else
return -EINVAL;
return 0;
}
static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane,
const struct atmel_hlcdc_layer_desc *desc,
struct atmel_hlcdc_plane_properties *props)
{
struct regmap *regmap = plane->layer.hlcdc->regmap;
if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
desc->type == ATMEL_HLCDC_CURSOR_LAYER) {
drm_object_attach_property(&plane->base.base,
props->alpha, 255);
/* Set default alpha value */
regmap_update_bits(regmap,
desc->regs_offset +
ATMEL_HLCDC_LAYER_GENERAL_CFG(&plane->layer),
ATMEL_HLCDC_LAYER_GA_MASK,
ATMEL_HLCDC_LAYER_GA_MASK);
}
if (desc->layout.xstride && desc->layout.pstride) {
int ret;
ret = drm_plane_create_rotation_property(&plane->base,
DRM_ROTATE_0,
DRM_ROTATE_0 |
DRM_ROTATE_90 |
DRM_ROTATE_180 |
DRM_ROTATE_270);
if (ret)
return ret;
}
if (desc->layout.csc) {
/*
* TODO: decare a "yuv-to-rgb-conv-factors" property to let
* userspace modify these factors (using a BLOB property ?).
*/
regmap_write(regmap,
desc->regs_offset +
ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 0),
0x4c900091);
regmap_write(regmap,
desc->regs_offset +
ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 1),
0x7a5f5090);
regmap_write(regmap,
desc->regs_offset +
ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 2),
0x40040890);
}
return 0;
}
static struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
.prepare_fb = atmel_hlcdc_plane_prepare_fb,
.cleanup_fb = atmel_hlcdc_plane_cleanup_fb,
.atomic_check = atmel_hlcdc_plane_atomic_check,
.atomic_update = atmel_hlcdc_plane_atomic_update,
.atomic_disable = atmel_hlcdc_plane_atomic_disable,
};
static void atmel_hlcdc_plane_reset(struct drm_plane *p)
{
struct atmel_hlcdc_plane_state *state;
if (p->state) {
state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
if (state->base.fb)
drm_framebuffer_unreference(state->base.fb);
kfree(state);
p->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state) {
state->alpha = 255;
p->state = &state->base;
p->state->plane = p;
}
}
static struct drm_plane_state *
atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p)
{
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
struct atmel_hlcdc_plane_state *copy;
copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
if (!copy)
return NULL;
copy->disc_updated = false;
copy->prepared = false;
if (copy->base.fb)
drm_framebuffer_reference(copy->base.fb);
return &copy->base;
}
static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *plane,
struct drm_plane_state *s)
{
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
if (s->fb)
drm_framebuffer_unreference(s->fb);
kfree(state);
}
static struct drm_plane_funcs layer_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.set_property = drm_atomic_helper_plane_set_property,
.destroy = atmel_hlcdc_plane_destroy,
.reset = atmel_hlcdc_plane_reset,
.atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
.atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
.atomic_set_property = atmel_hlcdc_plane_atomic_set_property,
.atomic_get_property = atmel_hlcdc_plane_atomic_get_property,
};
static struct atmel_hlcdc_plane *
atmel_hlcdc_plane_create(struct drm_device *dev,
const struct atmel_hlcdc_layer_desc *desc,
struct atmel_hlcdc_plane_properties *props)
{
struct atmel_hlcdc_plane *plane;
enum drm_plane_type type;
int ret;
plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL);
if (!plane)
return ERR_PTR(-ENOMEM);
ret = atmel_hlcdc_layer_init(dev, &plane->layer, desc);
if (ret)
return ERR_PTR(ret);
if (desc->type == ATMEL_HLCDC_BASE_LAYER)
type = DRM_PLANE_TYPE_PRIMARY;
else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER)
type = DRM_PLANE_TYPE_CURSOR;
else
type = DRM_PLANE_TYPE_OVERLAY;
ret = drm_universal_plane_init(dev, &plane->base, 0,
&layer_plane_funcs,
desc->formats->formats,
desc->formats->nformats, type, NULL);
if (ret)
return ERR_PTR(ret);
drm_plane_helper_add(&plane->base,
&atmel_hlcdc_layer_plane_helper_funcs);
/* Set default property values*/
ret = atmel_hlcdc_plane_init_properties(plane, desc, props);
if (ret)
return ERR_PTR(ret);
return plane;
}
static struct atmel_hlcdc_plane_properties *
atmel_hlcdc_plane_create_properties(struct drm_device *dev)
{
struct atmel_hlcdc_plane_properties *props;
props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL);
if (!props)
return ERR_PTR(-ENOMEM);
props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255);
if (!props->alpha)
return ERR_PTR(-ENOMEM);
return props;
}
struct atmel_hlcdc_planes *
atmel_hlcdc_create_planes(struct drm_device *dev)
{
struct atmel_hlcdc_dc *dc = dev->dev_private;
struct atmel_hlcdc_plane_properties *props;
struct atmel_hlcdc_planes *planes;
const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers;
int nlayers = dc->desc->nlayers;
int i;
planes = devm_kzalloc(dev->dev, sizeof(*planes), GFP_KERNEL);
if (!planes)
return ERR_PTR(-ENOMEM);
for (i = 0; i < nlayers; i++) {
if (descs[i].type == ATMEL_HLCDC_OVERLAY_LAYER)
planes->noverlays++;
}
if (planes->noverlays) {
planes->overlays = devm_kzalloc(dev->dev,
planes->noverlays *
sizeof(*planes->overlays),
GFP_KERNEL);
if (!planes->overlays)
return ERR_PTR(-ENOMEM);
}
props = atmel_hlcdc_plane_create_properties(dev);
if (IS_ERR(props))
return ERR_CAST(props);
planes->noverlays = 0;
for (i = 0; i < nlayers; i++) {
struct atmel_hlcdc_plane *plane;
if (descs[i].type == ATMEL_HLCDC_PP_LAYER)
continue;
plane = atmel_hlcdc_plane_create(dev, &descs[i], props);
if (IS_ERR(plane))
return ERR_CAST(plane);
plane->properties = props;
switch (descs[i].type) {
case ATMEL_HLCDC_BASE_LAYER:
if (planes->primary)
return ERR_PTR(-EINVAL);
planes->primary = plane;
break;
case ATMEL_HLCDC_OVERLAY_LAYER:
planes->overlays[planes->noverlays++] = plane;
break;
case ATMEL_HLCDC_CURSOR_LAYER:
if (planes->cursor)
return ERR_PTR(-EINVAL);
planes->cursor = plane;
break;
default:
break;
}
}
return planes;
}
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