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linux-sg2042/drivers/gpu/drm/rcar-du/rcar_du_plane.c

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/*
* rcar_du_plane.c -- R-Car Display Unit Planes
*
* Copyright (C) 2013-2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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/drmP.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 "rcar_du_drv.h"
#include "rcar_du_kms.h"
#include "rcar_du_plane.h"
#include "rcar_du_regs.h"
#define RCAR_DU_COLORKEY_NONE (0 << 24)
#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
#define RCAR_DU_COLORKEY_MASK (1 << 24)
static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
unsigned int index, u32 reg)
{
return rcar_du_read(rgrp->dev,
rgrp->mmio_offset + index * PLANE_OFF + reg);
}
static void rcar_du_plane_write(struct rcar_du_group *rgrp,
unsigned int index, u32 reg, u32 data)
{
rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
data);
}
static void rcar_du_plane_setup_fb(struct rcar_du_plane *plane)
{
struct rcar_du_plane_state *state =
to_rcar_du_plane_state(plane->plane.state);
struct drm_framebuffer *fb = plane->plane.state->fb;
struct rcar_du_group *rgrp = plane->group;
unsigned int src_x = state->state.src_x >> 16;
unsigned int src_y = state->state.src_y >> 16;
unsigned int index = state->hwindex;
struct drm_gem_cma_object *gem;
bool interlaced;
u32 mwr;
interlaced = state->state.crtc->state->adjusted_mode.flags
& DRM_MODE_FLAG_INTERLACE;
/* Memory pitch (expressed in pixels). Must be doubled for interlaced
* operation with 32bpp formats.
*/
if (state->format->planes == 2)
mwr = fb->pitches[0];
else
mwr = fb->pitches[0] * 8 / state->format->bpp;
if (interlaced && state->format->bpp == 32)
mwr *= 2;
rcar_du_plane_write(rgrp, index, PnMWR, mwr);
/* The Y position is expressed in raster line units and must be doubled
* for 32bpp formats, according to the R8A7790 datasheet. No mention of
* doubling the Y position is found in the R8A7779 datasheet, but the
* rule seems to apply there as well.
*
* Despite not being documented, doubling seem not to be needed when
* operating in interlaced mode.
*
* Similarly, for the second plane, NV12 and NV21 formats seem to
* require a halved Y position value, in both progressive and interlaced
* modes.
*/
rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
(!interlaced && state->format->bpp == 32 ? 2 : 1));
gem = drm_fb_cma_get_gem_obj(fb, 0);
rcar_du_plane_write(rgrp, index, PnDSA0R, gem->paddr + fb->offsets[0]);
if (state->format->planes == 2) {
index = (index + 1) % 8;
rcar_du_plane_write(rgrp, index, PnMWR, fb->pitches[0]);
rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
(state->format->bpp == 16 ? 2 : 1) / 2);
gem = drm_fb_cma_get_gem_obj(fb, 1);
rcar_du_plane_write(rgrp, index, PnDSA0R,
gem->paddr + fb->offsets[1]);
}
}
static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
unsigned int index)
{
struct rcar_du_plane_state *state =
to_rcar_du_plane_state(plane->plane.state);
struct rcar_du_group *rgrp = plane->group;
u32 colorkey;
u32 pnmr;
/* The PnALPHAR register controls alpha-blending in 16bpp formats
* (ARGB1555 and XRGB1555).
*
* For ARGB, set the alpha value to 0, and enable alpha-blending when
* the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
*
* For XRGB, set the alpha value to the plane-wide alpha value and
* enable alpha-blending regardless of the X bit value.
*/
if (state->format->fourcc != DRM_FORMAT_XRGB1555)
rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
else
rcar_du_plane_write(rgrp, index, PnALPHAR,
PnALPHAR_ABIT_X | state->alpha);
pnmr = PnMR_BM_MD | state->format->pnmr;
/* Disable color keying when requested. YUV formats have the
* PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
* automatically.
*/
if ((state->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
pnmr |= PnMR_SPIM_TP_OFF;
/* For packed YUV formats we need to select the U/V order. */
if (state->format->fourcc == DRM_FORMAT_YUYV)
pnmr |= PnMR_YCDF_YUYV;
rcar_du_plane_write(rgrp, index, PnMR, pnmr);
switch (state->format->fourcc) {
case DRM_FORMAT_RGB565:
colorkey = ((state->colorkey & 0xf80000) >> 8)
| ((state->colorkey & 0x00fc00) >> 5)
| ((state->colorkey & 0x0000f8) >> 3);
rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
break;
case DRM_FORMAT_ARGB1555:
case DRM_FORMAT_XRGB1555:
colorkey = ((state->colorkey & 0xf80000) >> 9)
| ((state->colorkey & 0x00f800) >> 6)
| ((state->colorkey & 0x0000f8) >> 3);
rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
break;
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
rcar_du_plane_write(rgrp, index, PnTC3R,
PnTC3R_CODE | (state->colorkey & 0xffffff));
break;
}
}
static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
unsigned int index)
{
struct rcar_du_plane_state *state =
to_rcar_du_plane_state(plane->plane.state);
struct rcar_du_group *rgrp = plane->group;
u32 ddcr2 = PnDDCR2_CODE;
u32 ddcr4;
/* Data format
*
* The data format is selected by the DDDF field in PnMR and the EDF
* field in DDCR4.
*/
ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
ddcr4 &= ~PnDDCR4_EDF_MASK;
ddcr4 |= state->format->edf | PnDDCR4_CODE;
rcar_du_plane_setup_mode(plane, index);
if (state->format->planes == 2) {
if (state->hwindex != index) {
if (state->format->fourcc == DRM_FORMAT_NV12 ||
state->format->fourcc == DRM_FORMAT_NV21)
ddcr2 |= PnDDCR2_Y420;
if (state->format->fourcc == DRM_FORMAT_NV21)
ddcr2 |= PnDDCR2_NV21;
ddcr2 |= PnDDCR2_DIVU;
} else {
ddcr2 |= PnDDCR2_DIVY;
}
}
rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
/* Destination position and size */
rcar_du_plane_write(rgrp, index, PnDSXR, plane->plane.state->crtc_w);
rcar_du_plane_write(rgrp, index, PnDSYR, plane->plane.state->crtc_h);
rcar_du_plane_write(rgrp, index, PnDPXR, plane->plane.state->crtc_x);
rcar_du_plane_write(rgrp, index, PnDPYR, plane->plane.state->crtc_y);
/* Wrap-around and blinking, disabled */
rcar_du_plane_write(rgrp, index, PnWASPR, 0);
rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
rcar_du_plane_write(rgrp, index, PnBTR, 0);
rcar_du_plane_write(rgrp, index, PnMLR, 0);
}
void rcar_du_plane_setup(struct rcar_du_plane *plane)
{
struct rcar_du_plane_state *state =
to_rcar_du_plane_state(plane->plane.state);
__rcar_du_plane_setup(plane, state->hwindex);
if (state->format->planes == 2)
__rcar_du_plane_setup(plane, (state->hwindex + 1) % 8);
rcar_du_plane_setup_fb(plane);
}
static int rcar_du_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct rcar_du_plane_state *rstate = to_rcar_du_plane_state(state);
struct rcar_du_plane *rplane = to_rcar_plane(plane);
struct rcar_du_device *rcdu = rplane->group->dev;
if (!state->fb || !state->crtc) {
rstate->format = NULL;
return 0;
}
if (state->src_w >> 16 != state->crtc_w ||
state->src_h >> 16 != state->crtc_h) {
dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
return -EINVAL;
}
rstate->format = rcar_du_format_info(state->fb->pixel_format);
if (rstate->format == NULL) {
dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
state->fb->pixel_format);
return -EINVAL;
}
return 0;
}
static void rcar_du_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct rcar_du_plane *rplane = to_rcar_plane(plane);
if (plane->state->crtc)
rcar_du_plane_setup(rplane);
}
static const struct drm_plane_helper_funcs rcar_du_plane_helper_funcs = {
.atomic_check = rcar_du_plane_atomic_check,
.atomic_update = rcar_du_plane_atomic_update,
};
static void rcar_du_plane_reset(struct drm_plane *plane)
{
struct rcar_du_plane_state *state;
if (plane->state && plane->state->fb)
drm_framebuffer_unreference(plane->state->fb);
kfree(plane->state);
plane->state = NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL)
return;
state->hwindex = -1;
state->alpha = 255;
state->colorkey = RCAR_DU_COLORKEY_NONE;
state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
}
static struct drm_plane_state *
rcar_du_plane_atomic_duplicate_state(struct drm_plane *plane)
{
struct rcar_du_plane_state *state;
struct rcar_du_plane_state *copy;
state = to_rcar_du_plane_state(plane->state);
copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
if (copy == NULL)
return NULL;
if (copy->state.fb)
drm_framebuffer_reference(copy->state.fb);
return &copy->state;
}
static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
if (state->fb)
drm_framebuffer_unreference(state->fb);
kfree(to_rcar_du_plane_state(state));
}
static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
struct drm_plane_state *state,
struct drm_property *property,
uint64_t val)
{
struct rcar_du_plane_state *rstate = to_rcar_du_plane_state(state);
struct rcar_du_plane *rplane = to_rcar_plane(plane);
struct rcar_du_group *rgrp = rplane->group;
if (property == rgrp->planes.alpha)
rstate->alpha = val;
else if (property == rgrp->planes.colorkey)
rstate->colorkey = val;
else if (property == rgrp->planes.zpos)
rstate->zpos = val;
else
return -EINVAL;
return 0;
}
static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
const struct drm_plane_state *state, struct drm_property *property,
uint64_t *val)
{
const struct rcar_du_plane_state *rstate =
container_of(state, const struct rcar_du_plane_state, state);
struct rcar_du_plane *rplane = to_rcar_plane(plane);
struct rcar_du_group *rgrp = rplane->group;
if (property == rgrp->planes.alpha)
*val = rstate->alpha;
else if (property == rgrp->planes.colorkey)
*val = rstate->colorkey;
else if (property == rgrp->planes.zpos)
*val = rstate->zpos;
else
return -EINVAL;
return 0;
}
static const struct drm_plane_funcs rcar_du_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = rcar_du_plane_reset,
.set_property = drm_atomic_helper_plane_set_property,
.destroy = drm_plane_cleanup,
.atomic_duplicate_state = rcar_du_plane_atomic_duplicate_state,
.atomic_destroy_state = rcar_du_plane_atomic_destroy_state,
.atomic_set_property = rcar_du_plane_atomic_set_property,
.atomic_get_property = rcar_du_plane_atomic_get_property,
};
static const uint32_t formats[] = {
DRM_FORMAT_RGB565,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_UYVY,
DRM_FORMAT_YUYV,
DRM_FORMAT_NV12,
DRM_FORMAT_NV21,
DRM_FORMAT_NV16,
};
int rcar_du_planes_init(struct rcar_du_group *rgrp)
{
struct rcar_du_planes *planes = &rgrp->planes;
struct rcar_du_device *rcdu = rgrp->dev;
unsigned int num_planes;
unsigned int num_crtcs;
unsigned int crtcs;
unsigned int i;
int ret;
planes->alpha =
drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
if (planes->alpha == NULL)
return -ENOMEM;
/* The color key is expressed as an RGB888 triplet stored in a 32-bit
* integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
* or enable source color keying (1).
*/
planes->colorkey =
drm_property_create_range(rcdu->ddev, 0, "colorkey",
0, 0x01ffffff);
if (planes->colorkey == NULL)
return -ENOMEM;
planes->zpos =
drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
if (planes->zpos == NULL)
return -ENOMEM;
/* Create one primary plane per in this group CRTC and seven overlay
* planes.
*/
num_crtcs = min(rcdu->num_crtcs - 2 * rgrp->index, 2U);
num_planes = num_crtcs + 7;
crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));
for (i = 0; i < num_planes; ++i) {
enum drm_plane_type type = i < num_crtcs
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY;
struct rcar_du_plane *plane = &planes->planes[i];
plane->group = rgrp;
ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, crtcs,
&rcar_du_plane_funcs, formats,
ARRAY_SIZE(formats), type);
if (ret < 0)
return ret;
drm_plane_helper_add(&plane->plane,
&rcar_du_plane_helper_funcs);
if (type == DRM_PLANE_TYPE_PRIMARY)
continue;
drm_object_attach_property(&plane->plane.base,
planes->alpha, 255);
drm_object_attach_property(&plane->plane.base,
planes->colorkey,
RCAR_DU_COLORKEY_NONE);
drm_object_attach_property(&plane->plane.base,
planes->zpos, 1);
}
return 0;
}
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