![Laurent Pinchart](/assets/img/avatar_default.png)
The "Renesas Corporation" listed in the copyright notice doesn't exist. Replace it with "Renesas Electronics Corporation" and update the copyright years. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
517 lines
13 KiB
C
517 lines
13 KiB
C
/*
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* rcar_du_plane.c -- R-Car Display Unit Planes
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include "rcar_du_drv.h"
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#include "rcar_du_kms.h"
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#include "rcar_du_plane.h"
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#include "rcar_du_regs.h"
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#define RCAR_DU_COLORKEY_NONE (0 << 24)
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#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
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#define RCAR_DU_COLORKEY_MASK (1 << 24)
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struct rcar_du_kms_plane {
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struct drm_plane plane;
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struct rcar_du_plane *hwplane;
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};
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static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
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{
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return container_of(plane, struct rcar_du_kms_plane, plane)->hwplane;
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}
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static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
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unsigned int index, u32 reg)
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{
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return rcar_du_read(rgrp->dev,
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rgrp->mmio_offset + index * PLANE_OFF + reg);
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}
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static void rcar_du_plane_write(struct rcar_du_group *rgrp,
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unsigned int index, u32 reg, u32 data)
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{
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rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
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data);
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}
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int rcar_du_plane_reserve(struct rcar_du_plane *plane,
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const struct rcar_du_format_info *format)
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{
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struct rcar_du_group *rgrp = plane->group;
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unsigned int i;
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int ret = -EBUSY;
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mutex_lock(&rgrp->planes.lock);
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for (i = 0; i < ARRAY_SIZE(rgrp->planes.planes); ++i) {
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if (!(rgrp->planes.free & (1 << i)))
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continue;
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if (format->planes == 1 ||
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rgrp->planes.free & (1 << ((i + 1) % 8)))
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break;
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}
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if (i == ARRAY_SIZE(rgrp->planes.planes))
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goto done;
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rgrp->planes.free &= ~(1 << i);
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if (format->planes == 2)
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rgrp->planes.free &= ~(1 << ((i + 1) % 8));
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plane->hwindex = i;
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ret = 0;
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done:
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mutex_unlock(&rgrp->planes.lock);
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return ret;
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}
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void rcar_du_plane_release(struct rcar_du_plane *plane)
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{
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struct rcar_du_group *rgrp = plane->group;
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if (plane->hwindex == -1)
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return;
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mutex_lock(&rgrp->planes.lock);
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rgrp->planes.free |= 1 << plane->hwindex;
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if (plane->format->planes == 2)
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rgrp->planes.free |= 1 << ((plane->hwindex + 1) % 8);
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mutex_unlock(&rgrp->planes.lock);
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plane->hwindex = -1;
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}
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void rcar_du_plane_update_base(struct rcar_du_plane *plane)
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{
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struct rcar_du_group *rgrp = plane->group;
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unsigned int index = plane->hwindex;
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u32 mwr;
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/* Memory pitch (expressed in pixels) */
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if (plane->format->planes == 2)
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mwr = plane->pitch;
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else
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mwr = plane->pitch * 8 / plane->format->bpp;
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rcar_du_plane_write(rgrp, index, PnMWR, mwr);
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/* The Y position is expressed in raster line units and must be doubled
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* for 32bpp formats, according to the R8A7790 datasheet. No mention of
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* doubling the Y position is found in the R8A7779 datasheet, but the
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* rule seems to apply there as well.
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*
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* Similarly, for the second plane, NV12 and NV21 formats seem to
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* require a halved Y position value.
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*/
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rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
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rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
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(plane->format->bpp == 32 ? 2 : 1));
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rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
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if (plane->format->planes == 2) {
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index = (index + 1) % 8;
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rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
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rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
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(plane->format->bpp == 16 ? 2 : 1) / 2);
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rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[1]);
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}
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}
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void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
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struct drm_framebuffer *fb)
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{
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struct drm_gem_cma_object *gem;
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plane->pitch = fb->pitches[0];
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gem = drm_fb_cma_get_gem_obj(fb, 0);
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plane->dma[0] = gem->paddr + fb->offsets[0];
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if (plane->format->planes == 2) {
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gem = drm_fb_cma_get_gem_obj(fb, 1);
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plane->dma[1] = gem->paddr + fb->offsets[1];
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}
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}
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static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
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unsigned int index)
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{
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struct rcar_du_group *rgrp = plane->group;
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u32 colorkey;
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u32 pnmr;
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/* The PnALPHAR register controls alpha-blending in 16bpp formats
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* (ARGB1555 and XRGB1555).
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*
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* For ARGB, set the alpha value to 0, and enable alpha-blending when
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* the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
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*
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* For XRGB, set the alpha value to the plane-wide alpha value and
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* enable alpha-blending regardless of the X bit value.
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*/
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if (plane->format->fourcc != DRM_FORMAT_XRGB1555)
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rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
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else
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rcar_du_plane_write(rgrp, index, PnALPHAR,
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PnALPHAR_ABIT_X | plane->alpha);
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pnmr = PnMR_BM_MD | plane->format->pnmr;
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/* Disable color keying when requested. YUV formats have the
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* PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
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* automatically.
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*/
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if ((plane->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
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pnmr |= PnMR_SPIM_TP_OFF;
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/* For packed YUV formats we need to select the U/V order. */
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if (plane->format->fourcc == DRM_FORMAT_YUYV)
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pnmr |= PnMR_YCDF_YUYV;
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rcar_du_plane_write(rgrp, index, PnMR, pnmr);
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switch (plane->format->fourcc) {
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case DRM_FORMAT_RGB565:
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colorkey = ((plane->colorkey & 0xf80000) >> 8)
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| ((plane->colorkey & 0x00fc00) >> 5)
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| ((plane->colorkey & 0x0000f8) >> 3);
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rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
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break;
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case DRM_FORMAT_ARGB1555:
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case DRM_FORMAT_XRGB1555:
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colorkey = ((plane->colorkey & 0xf80000) >> 9)
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| ((plane->colorkey & 0x00f800) >> 6)
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| ((plane->colorkey & 0x0000f8) >> 3);
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rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
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break;
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_ARGB8888:
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rcar_du_plane_write(rgrp, index, PnTC3R,
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PnTC3R_CODE | (plane->colorkey & 0xffffff));
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break;
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}
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}
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static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
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unsigned int index)
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{
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struct rcar_du_group *rgrp = plane->group;
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u32 ddcr2 = PnDDCR2_CODE;
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u32 ddcr4;
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/* Data format
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*
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* The data format is selected by the DDDF field in PnMR and the EDF
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* field in DDCR4.
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*/
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ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
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ddcr4 &= ~PnDDCR4_EDF_MASK;
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ddcr4 |= plane->format->edf | PnDDCR4_CODE;
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rcar_du_plane_setup_mode(plane, index);
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if (plane->format->planes == 2) {
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if (plane->hwindex != index) {
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if (plane->format->fourcc == DRM_FORMAT_NV12 ||
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plane->format->fourcc == DRM_FORMAT_NV21)
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ddcr2 |= PnDDCR2_Y420;
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if (plane->format->fourcc == DRM_FORMAT_NV21)
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ddcr2 |= PnDDCR2_NV21;
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ddcr2 |= PnDDCR2_DIVU;
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} else {
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ddcr2 |= PnDDCR2_DIVY;
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}
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}
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rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
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rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
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/* Destination position and size */
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rcar_du_plane_write(rgrp, index, PnDSXR, plane->width);
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rcar_du_plane_write(rgrp, index, PnDSYR, plane->height);
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rcar_du_plane_write(rgrp, index, PnDPXR, plane->dst_x);
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rcar_du_plane_write(rgrp, index, PnDPYR, plane->dst_y);
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/* Wrap-around and blinking, disabled */
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rcar_du_plane_write(rgrp, index, PnWASPR, 0);
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rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
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rcar_du_plane_write(rgrp, index, PnBTR, 0);
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rcar_du_plane_write(rgrp, index, PnMLR, 0);
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}
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void rcar_du_plane_setup(struct rcar_du_plane *plane)
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{
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__rcar_du_plane_setup(plane, plane->hwindex);
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if (plane->format->planes == 2)
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__rcar_du_plane_setup(plane, (plane->hwindex + 1) % 8);
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rcar_du_plane_update_base(plane);
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}
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static int
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rcar_du_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
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struct drm_framebuffer *fb, int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h)
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{
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struct rcar_du_plane *rplane = to_rcar_plane(plane);
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struct rcar_du_device *rcdu = rplane->group->dev;
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const struct rcar_du_format_info *format;
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unsigned int nplanes;
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int ret;
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format = rcar_du_format_info(fb->pixel_format);
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if (format == NULL) {
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dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
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fb->pixel_format);
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return -EINVAL;
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}
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if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) {
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dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
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return -EINVAL;
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}
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nplanes = rplane->format ? rplane->format->planes : 0;
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/* Reallocate hardware planes if the number of required planes has
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* changed.
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*/
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if (format->planes != nplanes) {
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rcar_du_plane_release(rplane);
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ret = rcar_du_plane_reserve(rplane, format);
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if (ret < 0)
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return ret;
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}
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rplane->crtc = crtc;
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rplane->format = format;
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rplane->src_x = src_x >> 16;
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rplane->src_y = src_y >> 16;
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rplane->dst_x = crtc_x;
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rplane->dst_y = crtc_y;
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rplane->width = crtc_w;
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rplane->height = crtc_h;
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rcar_du_plane_compute_base(rplane, fb);
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rcar_du_plane_setup(rplane);
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mutex_lock(&rplane->group->planes.lock);
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rplane->enabled = true;
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rcar_du_crtc_update_planes(rplane->crtc);
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mutex_unlock(&rplane->group->planes.lock);
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return 0;
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}
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static int rcar_du_plane_disable(struct drm_plane *plane)
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{
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struct rcar_du_plane *rplane = to_rcar_plane(plane);
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if (!rplane->enabled)
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return 0;
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mutex_lock(&rplane->group->planes.lock);
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rplane->enabled = false;
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rcar_du_crtc_update_planes(rplane->crtc);
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mutex_unlock(&rplane->group->planes.lock);
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rcar_du_plane_release(rplane);
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rplane->crtc = NULL;
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rplane->format = NULL;
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return 0;
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}
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/* Both the .set_property and the .update_plane operations are called with the
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* mode_config lock held. There is this no need to explicitly protect access to
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* the alpha and colorkey fields and the mode register.
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*/
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static void rcar_du_plane_set_alpha(struct rcar_du_plane *plane, u32 alpha)
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{
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if (plane->alpha == alpha)
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return;
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plane->alpha = alpha;
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if (!plane->enabled || plane->format->fourcc != DRM_FORMAT_XRGB1555)
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return;
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rcar_du_plane_setup_mode(plane, plane->hwindex);
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}
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static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
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u32 colorkey)
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{
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if (plane->colorkey == colorkey)
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return;
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plane->colorkey = colorkey;
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if (!plane->enabled)
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return;
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rcar_du_plane_setup_mode(plane, plane->hwindex);
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}
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static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
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unsigned int zpos)
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{
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mutex_lock(&plane->group->planes.lock);
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if (plane->zpos == zpos)
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goto done;
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plane->zpos = zpos;
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if (!plane->enabled)
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goto done;
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rcar_du_crtc_update_planes(plane->crtc);
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done:
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mutex_unlock(&plane->group->planes.lock);
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}
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static int rcar_du_plane_set_property(struct drm_plane *plane,
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struct drm_property *property,
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uint64_t value)
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{
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struct rcar_du_plane *rplane = to_rcar_plane(plane);
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struct rcar_du_group *rgrp = rplane->group;
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if (property == rgrp->planes.alpha)
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rcar_du_plane_set_alpha(rplane, value);
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else if (property == rgrp->planes.colorkey)
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rcar_du_plane_set_colorkey(rplane, value);
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else if (property == rgrp->planes.zpos)
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rcar_du_plane_set_zpos(rplane, value);
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else
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return -EINVAL;
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return 0;
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}
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static const struct drm_plane_funcs rcar_du_plane_funcs = {
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.update_plane = rcar_du_plane_update,
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.disable_plane = rcar_du_plane_disable,
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.set_property = rcar_du_plane_set_property,
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.destroy = drm_plane_cleanup,
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};
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static const uint32_t formats[] = {
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DRM_FORMAT_RGB565,
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DRM_FORMAT_ARGB1555,
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DRM_FORMAT_XRGB1555,
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_ARGB8888,
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DRM_FORMAT_UYVY,
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DRM_FORMAT_YUYV,
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DRM_FORMAT_NV12,
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DRM_FORMAT_NV21,
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DRM_FORMAT_NV16,
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};
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int rcar_du_planes_init(struct rcar_du_group *rgrp)
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{
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struct rcar_du_planes *planes = &rgrp->planes;
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struct rcar_du_device *rcdu = rgrp->dev;
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unsigned int i;
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mutex_init(&planes->lock);
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planes->free = 0xff;
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planes->alpha =
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drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
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if (planes->alpha == NULL)
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return -ENOMEM;
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/* The color key is expressed as an RGB888 triplet stored in a 32-bit
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* integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
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* or enable source color keying (1).
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*/
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planes->colorkey =
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drm_property_create_range(rcdu->ddev, 0, "colorkey",
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0, 0x01ffffff);
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if (planes->colorkey == NULL)
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return -ENOMEM;
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planes->zpos =
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drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
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if (planes->zpos == NULL)
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return -ENOMEM;
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for (i = 0; i < ARRAY_SIZE(planes->planes); ++i) {
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struct rcar_du_plane *plane = &planes->planes[i];
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plane->group = rgrp;
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plane->hwindex = -1;
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plane->alpha = 255;
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plane->colorkey = RCAR_DU_COLORKEY_NONE;
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plane->zpos = 0;
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}
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return 0;
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}
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int rcar_du_planes_register(struct rcar_du_group *rgrp)
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{
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struct rcar_du_planes *planes = &rgrp->planes;
|
|
struct rcar_du_device *rcdu = rgrp->dev;
|
|
unsigned int crtcs;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));
|
|
|
|
for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) {
|
|
struct rcar_du_kms_plane *plane;
|
|
|
|
plane = devm_kzalloc(rcdu->dev, sizeof(*plane), GFP_KERNEL);
|
|
if (plane == NULL)
|
|
return -ENOMEM;
|
|
|
|
plane->hwplane = &planes->planes[i + 2];
|
|
plane->hwplane->zpos = 1;
|
|
|
|
ret = drm_plane_init(rcdu->ddev, &plane->plane, crtcs,
|
|
&rcar_du_plane_funcs, formats,
|
|
ARRAY_SIZE(formats), false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
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;
|
|
}
|