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

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2014 Free Electrons
* Copyright (C) 2014 Atmel
*
* Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
*/
#include <linux/dmapool.h>
#include <linux/mfd/atmel-hlcdc.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#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
* @disc_x: x discard position
* @disc_y: y discard position
* @disc_w: discard width
* @disc_h: discard height
* @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)
* @dscrs: DMA descriptors
*/
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;
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_LAYER_MAX_PLANES];
unsigned int offsets[ATMEL_HLCDC_LAYER_MAX_PLANES];
int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
int nplanes;
/* DMA descriptors. */
struct atmel_hlcdc_dma_channel_dscr *dscrs[ATMEL_HLCDC_LAYER_MAX_PLANES];
};
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_C8,
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_C8,
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_C8:
*mode = ATMEL_HLCDC_C8_MODE;
break;
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 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,
};
#define ATMEL_HLCDC_XPHIDEF 4
#define ATMEL_HLCDC_YPHIDEF 4
static u32 atmel_hlcdc_plane_phiscaler_get_factor(u32 srcsize,
u32 dstsize,
u32 phidef)
{
u32 factor, max_memsize;
factor = (256 * ((8 * (srcsize - 1)) - phidef)) / (dstsize - 1);
max_memsize = ((factor * (dstsize - 1)) + (256 * phidef)) / 2048;
if (max_memsize > srcsize - 1)
factor--;
return factor;
}
static void
atmel_hlcdc_plane_scaler_set_phicoeff(struct atmel_hlcdc_plane *plane,
const u32 *coeff_tab, int size,
unsigned int cfg_offs)
{
int i;
for (i = 0; i < size; i++)
atmel_hlcdc_layer_write_cfg(&plane->layer, cfg_offs + i,
coeff_tab[i]);
}
void atmel_hlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
u32 xfactor, yfactor;
if (!desc->layout.scaler_config)
return;
if (state->crtc_w == state->src_w && state->crtc_h == state->src_h) {
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.scaler_config, 0);
return;
}
if (desc->layout.phicoeffs.x) {
xfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_w,
state->crtc_w,
ATMEL_HLCDC_XPHIDEF);
yfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_h,
state->crtc_h,
ATMEL_HLCDC_YPHIDEF);
atmel_hlcdc_plane_scaler_set_phicoeff(plane,
state->crtc_w < state->src_w ?
heo_downscaling_xcoef :
heo_upscaling_xcoef,
ARRAY_SIZE(heo_upscaling_xcoef),
desc->layout.phicoeffs.x);
atmel_hlcdc_plane_scaler_set_phicoeff(plane,
state->crtc_h < state->src_h ?
heo_downscaling_ycoef :
heo_upscaling_ycoef,
ARRAY_SIZE(heo_upscaling_ycoef),
desc->layout.phicoeffs.y);
} else {
xfactor = (1024 * state->src_w) / state->crtc_w;
yfactor = (1024 * state->src_h) / state->crtc_h;
}
atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config,
ATMEL_HLCDC_LAYER_SCALER_ENABLE |
ATMEL_HLCDC_LAYER_SCALER_FACTORS(xfactor,
yfactor));
}
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_desc *desc = plane->layer.desc;
if (desc->layout.size)
atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.size,
ATMEL_HLCDC_LAYER_SIZE(state->crtc_w,
state->crtc_h));
if (desc->layout.memsize)
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.memsize,
ATMEL_HLCDC_LAYER_SIZE(state->src_w,
state->src_h));
if (desc->layout.pos)
atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.pos,
ATMEL_HLCDC_LAYER_POS(state->crtc_x,
state->crtc_y));
atmel_hlcdc_plane_setup_scaler(plane, state);
}
static void
atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
unsigned int cfg = ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 | state->ahb_id;
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
const struct drm_format_info *format = state->base.fb->format;
/*
* Rotation optimization is not working on RGB888 (rotation is still
* working but without any optimization).
*/
if (format->format == DRM_FORMAT_RGB888)
cfg |= ATMEL_HLCDC_LAYER_DMA_ROTDIS;
atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG,
cfg);
cfg = ATMEL_HLCDC_LAYER_DMA | ATMEL_HLCDC_LAYER_REP;
if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
ATMEL_HLCDC_LAYER_ITER;
if (format->has_alpha)
cfg |= ATMEL_HLCDC_LAYER_LAEN;
else
cfg |= ATMEL_HLCDC_LAYER_GAEN |
ATMEL_HLCDC_LAYER_GA(state->base.alpha);
}
if (state->disc_h && state->disc_w)
cfg |= ATMEL_HLCDC_LAYER_DISCEN;
atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.general_config,
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_write_cfg(&plane->layer,
ATMEL_HLCDC_LAYER_FORMAT_CFG, cfg);
}
static void atmel_hlcdc_plane_update_clut(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
struct drm_crtc *crtc = state->base.crtc;
struct drm_color_lut *lut;
int idx;
if (!crtc || !crtc->state)
return;
if (!crtc->state->color_mgmt_changed || !crtc->state->gamma_lut)
return;
lut = (struct drm_color_lut *)crtc->state->gamma_lut->data;
for (idx = 0; idx < ATMEL_HLCDC_CLUT_SIZE; idx++, lut++) {
u32 val = ((lut->red << 8) & 0xff0000) |
(lut->green & 0xff00) |
(lut->blue >> 8);
atmel_hlcdc_layer_write_clut(&plane->layer, idx, val);
}
}
static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state)
{
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
struct drm_framebuffer *fb = state->base.fb;
u32 sr;
int i;
sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR);
for (i = 0; i < state->nplanes; i++) {
struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i);
state->dscrs[i]->addr = gem->paddr + state->offsets[i];
atmel_hlcdc_layer_write_reg(&plane->layer,
ATMEL_HLCDC_LAYER_PLANE_HEAD(i),
state->dscrs[i]->self);
if (!(sr & ATMEL_HLCDC_LAYER_EN)) {
atmel_hlcdc_layer_write_reg(&plane->layer,
ATMEL_HLCDC_LAYER_PLANE_ADDR(i),
state->dscrs[i]->addr);
atmel_hlcdc_layer_write_reg(&plane->layer,
ATMEL_HLCDC_LAYER_PLANE_CTRL(i),
state->dscrs[i]->ctrl);
atmel_hlcdc_layer_write_reg(&plane->layer,
ATMEL_HLCDC_LAYER_PLANE_NEXT(i),
state->dscrs[i]->self);
}
if (desc->layout.xstride[i])
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.xstride[i],
state->xstride[i]);
if (desc->layout.pstride[i])
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.pstride[i],
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->visible ||
!ovl_s->fb ||
ovl_s->fb->format->has_alpha ||
ovl_s->alpha != DRM_BLEND_ALPHA_OPAQUE)
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;
}
primary_state->disc_x = disc_x;
primary_state->disc_y = disc_y;
primary_state->disc_w = disc_w;
primary_state->disc_h = disc_h;
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;
layout = &plane->layer.desc->layout;
if (!layout->disc_pos || !layout->disc_size)
return;
atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_pos,
ATMEL_HLCDC_LAYER_DISC_POS(state->disc_x,
state->disc_y));
atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_size,
ATMEL_HLCDC_LAYER_DISC_SIZE(state->disc_w,
state->disc_h));
}
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_desc *desc = plane->layer.desc;
struct drm_framebuffer *fb = state->base.fb;
const struct drm_display_mode *mode;
struct drm_crtc_state *crtc_state;
int ret;
int i;
if (!state->base.crtc || WARN_ON(!fb))
return 0;
crtc_state = drm_atomic_get_existing_crtc_state(s->state, s->crtc);
mode = &crtc_state->adjusted_mode;
ret = drm_atomic_helper_check_plane_state(s, crtc_state,
(1 << 16) / 2048,
INT_MAX, true, true);
if (ret || !s->visible)
return ret;
state->src_x = s->src.x1;
state->src_y = s->src.y1;
state->src_w = drm_rect_width(&s->src);
state->src_h = drm_rect_height(&s->src);
state->crtc_x = s->dst.x1;
state->crtc_y = s->dst.y1;
state->crtc_w = drm_rect_width(&s->dst);
state->crtc_h = drm_rect_height(&s->dst);
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_LAYER_MAX_PLANES)
return -EINVAL;
for (i = 0; i < state->nplanes; i++) {
unsigned int offset = 0;
int xdiv = i ? fb->format->hsub : 1;
int ydiv = i ? fb->format->vsub : 1;
state->bpp[i] = fb->format->cpp[i];
if (!state->bpp[i])
return -EINVAL;
switch (state->base.rotation & DRM_MODE_ROTATE_MASK) {
case DRM_MODE_ROTATE_90:
offset = (state->src_y / ydiv) *
fb->pitches[i];
offset += ((state->src_x + state->src_w - 1) /
xdiv) * state->bpp[i];
state->xstride[i] = -(((state->src_h - 1) / ydiv) *
fb->pitches[i]) -
(2 * state->bpp[i]);
state->pstride[i] = fb->pitches[i] - state->bpp[i];
break;
case DRM_MODE_ROTATE_180:
offset = ((state->src_y + state->src_h - 1) /
ydiv) * fb->pitches[i];
offset += ((state->src_x + state->src_w - 1) /
xdiv) * state->bpp[i];
state->xstride[i] = ((((state->src_w - 1) / xdiv) - 1) *
state->bpp[i]) - fb->pitches[i];
state->pstride[i] = -2 * state->bpp[i];
break;
case DRM_MODE_ROTATE_270:
offset = ((state->src_y + state->src_h - 1) /
ydiv) * fb->pitches[i];
offset += (state->src_x / xdiv) * state->bpp[i];
state->xstride[i] = ((state->src_h - 1) / ydiv) *
fb->pitches[i];
state->pstride[i] = -fb->pitches[i] - state->bpp[i];
break;
case DRM_MODE_ROTATE_0:
default:
offset = (state->src_y / ydiv) * fb->pitches[i];
offset += (state->src_x / xdiv) * state->bpp[i];
state->xstride[i] = fb->pitches[i] -
((state->src_w / xdiv) *
state->bpp[i]);
state->pstride[i] = 0;
break;
}
state->offsets[i] = offset + fb->offsets[i];
}
/*
* Swap width and size in case of 90 or 270 degrees rotation
*/
if (drm_rotation_90_or_270(state->base.rotation)) {
swap(state->src_w, state->src_h);
}
if (!desc->layout.size &&
(mode->hdisplay != state->crtc_w ||
mode->vdisplay != state->crtc_h))
return -EINVAL;
if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
(!desc->layout.memsize ||
state->base.fb->format->has_alpha))
return -EINVAL;
return 0;
}
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);
/* Disable interrupts */
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR,
0xffffffff);
/* Disable the layer */
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHDR,
ATMEL_HLCDC_LAYER_RST |
ATMEL_HLCDC_LAYER_A2Q |
ATMEL_HLCDC_LAYER_UPDATE);
/* Clear all pending interrupts */
atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
}
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);
u32 sr;
if (!p->state->crtc || !p->state->fb)
return;
if (!state->base.visible) {
atmel_hlcdc_plane_atomic_disable(p, old_s);
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_clut(plane, state);
atmel_hlcdc_plane_update_buffers(plane, state);
atmel_hlcdc_plane_update_disc_area(plane, state);
/* Enable the overrun interrupts. */
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IER,
ATMEL_HLCDC_LAYER_OVR_IRQ(0) |
ATMEL_HLCDC_LAYER_OVR_IRQ(1) |
ATMEL_HLCDC_LAYER_OVR_IRQ(2));
/* Apply the new config at the next SOF event. */
sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR);
atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHER,
ATMEL_HLCDC_LAYER_UPDATE |
(sr & ATMEL_HLCDC_LAYER_EN ?
ATMEL_HLCDC_LAYER_A2Q : ATMEL_HLCDC_LAYER_EN));
}
static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)
{
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
desc->type == ATMEL_HLCDC_CURSOR_LAYER) {
int ret;
ret = drm_plane_create_alpha_property(&plane->base);
if (ret)
return ret;
}
if (desc->layout.xstride[0] && desc->layout.pstride[0]) {
int ret;
ret = drm_plane_create_rotation_property(&plane->base,
DRM_MODE_ROTATE_0,
DRM_MODE_ROTATE_0 |
DRM_MODE_ROTATE_90 |
DRM_MODE_ROTATE_180 |
DRM_MODE_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 ?).
*/
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.csc,
0x4c900091);
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.csc + 1,
0x7a5f5090);
atmel_hlcdc_layer_write_cfg(&plane->layer,
desc->layout.csc + 2,
0x40040890);
}
return 0;
}
void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane)
{
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
u32 isr;
isr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
/*
* There's not much we can do in case of overrun except informing
* the user. However, we are in interrupt context here, hence the
* use of dev_dbg().
*/
if (isr &
(ATMEL_HLCDC_LAYER_OVR_IRQ(0) | ATMEL_HLCDC_LAYER_OVR_IRQ(1) |
ATMEL_HLCDC_LAYER_OVR_IRQ(2)))
dev_dbg(plane->base.dev->dev, "overrun on plane %s\n",
desc->name);
}
static const struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
.atomic_check = atmel_hlcdc_plane_atomic_check,
.atomic_update = atmel_hlcdc_plane_atomic_update,
.atomic_disable = atmel_hlcdc_plane_atomic_disable,
};
static int atmel_hlcdc_plane_alloc_dscrs(struct drm_plane *p,
struct atmel_hlcdc_plane_state *state)
{
struct atmel_hlcdc_dc *dc = p->dev->dev_private;
int i;
for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) {
struct atmel_hlcdc_dma_channel_dscr *dscr;
dma_addr_t dscr_dma;
dscr = dma_pool_alloc(dc->dscrpool, GFP_KERNEL, &dscr_dma);
if (!dscr)
goto err;
dscr->addr = 0;
dscr->next = dscr_dma;
dscr->self = dscr_dma;
dscr->ctrl = ATMEL_HLCDC_LAYER_DFETCH;
state->dscrs[i] = dscr;
}
return 0;
err:
for (i--; i >= 0; i--) {
dma_pool_free(dc->dscrpool, state->dscrs[i],
state->dscrs[i]->self);
}
return -ENOMEM;
}
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_put(state->base.fb);
kfree(state);
p->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state) {
if (atmel_hlcdc_plane_alloc_dscrs(p, state)) {
kfree(state);
dev_err(p->dev->dev,
"Failed to allocate initial plane state\n");
return;
}
__drm_atomic_helper_plane_reset(p, &state->base);
}
}
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;
if (atmel_hlcdc_plane_alloc_dscrs(p, copy)) {
kfree(copy);
return NULL;
}
if (copy->base.fb)
drm_framebuffer_get(copy->base.fb);
return &copy->base;
}
static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *p,
struct drm_plane_state *s)
{
struct atmel_hlcdc_plane_state *state =
drm_plane_state_to_atmel_hlcdc_plane_state(s);
struct atmel_hlcdc_dc *dc = p->dev->dev_private;
int i;
for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) {
dma_pool_free(dc->dscrpool, state->dscrs[i],
state->dscrs[i]->self);
}
if (s->fb)
drm_framebuffer_put(s->fb);
kfree(state);
}
static const struct drm_plane_funcs layer_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.reset = atmel_hlcdc_plane_reset,
.atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
.atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
};
static int atmel_hlcdc_plane_create(struct drm_device *dev,
const struct atmel_hlcdc_layer_desc *desc)
{
struct atmel_hlcdc_dc *dc = dev->dev_private;
struct atmel_hlcdc_plane *plane;
enum drm_plane_type type;
int ret;
plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL);
if (!plane)
return -ENOMEM;
atmel_hlcdc_layer_init(&plane->layer, desc, dc->hlcdc->regmap);
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,
NULL, type, NULL);
if (ret)
return ret;
drm_plane_helper_add(&plane->base,
&atmel_hlcdc_layer_plane_helper_funcs);
/* Set default property values*/
ret = atmel_hlcdc_plane_init_properties(plane);
if (ret)
return ret;
dc->layers[desc->id] = &plane->layer;
return 0;
}
int atmel_hlcdc_create_planes(struct drm_device *dev)
{
struct atmel_hlcdc_dc *dc = dev->dev_private;
const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers;
int nlayers = dc->desc->nlayers;
int i, ret;
dc->dscrpool = dmam_pool_create("atmel-hlcdc-dscr", dev->dev,
sizeof(struct atmel_hlcdc_dma_channel_dscr),
sizeof(u64), 0);
if (!dc->dscrpool)
return -ENOMEM;
for (i = 0; i < nlayers; i++) {
if (descs[i].type != ATMEL_HLCDC_BASE_LAYER &&
descs[i].type != ATMEL_HLCDC_OVERLAY_LAYER &&
descs[i].type != ATMEL_HLCDC_CURSOR_LAYER)
continue;
ret = atmel_hlcdc_plane_create(dev, &descs[i]);
if (ret)
return ret;
}
return 0;
}
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