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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 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_scanout(struct rcar_du_plane *plane)
{
struct rcar_du_plane_state *state =
to_rcar_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;
unsigned int pitch;
bool interlaced;
unsigned int i;
u32 dma[2];
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)
pitch = fb->pitches[0];
else
pitch = fb->pitches[0] * 8 / state->format->bpp;
for (i = 0; i < state->format->planes; ++i) {
gem = drm_fb_cma_get_gem_obj(fb, i);
dma[i] = gem->paddr + fb->offsets[i];
}
rcar_du_plane_write(rgrp, index, PnMWR,
(interlaced && state->format->bpp == 32) ?
pitch * 2 : pitch);
/* 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));
rcar_du_plane_write(rgrp, index, PnDSA0R, dma[0]);
if (state->format->planes == 2) {
index = (index + 1) % 8;
rcar_du_plane_write(rgrp, index, PnMWR, pitch);
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);
rcar_du_plane_write(rgrp, index, PnDSA0R, dma[1]);
}
}
static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
unsigned int index)
{
struct rcar_du_plane_state *state =
to_rcar_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_format(struct rcar_du_plane *plane,
unsigned int index)
{
struct rcar_du_plane_state *state =
to_rcar_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.
*/
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);
ddcr4 = state->format->edf | PnDDCR4_CODE;
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_plane_state(plane->plane.state);
rcar_du_plane_setup_format(plane, state->hwindex);
if (state->format->planes == 2)
rcar_du_plane_setup_format(plane, (state->hwindex + 1) % 8);
rcar_du_plane_setup_scanout(plane
|