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/*
* shmob_drm_plane.c -- SH Mobile DRM Planes
*
* Copyright (C) 2012 Renesas Corporation
*
* 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_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <video/sh_mobile_meram.h>
#include "shmob_drm_drv.h"
#include "shmob_drm_kms.h"
#include "shmob_drm_plane.h"
#include "shmob_drm_regs.h"
struct shmob_drm_plane {
struct drm_plane plane;
unsigned int index;
unsigned int alpha;
const struct shmob_drm_format_info *format;
unsigned long dma[2];
unsigned int src_x;
unsigned int src_y;
unsigned int crtc_x;
unsigned int crtc_y;
unsigned int crtc_w;
unsigned int crtc_h;
};
#define to_shmob_plane(p) container_of(p, struct shmob_drm_plane, plane)
static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
struct drm_framebuffer *fb,
int x, int y)
{
struct drm_gem_cma_object *gem;
unsigned int bpp;
bpp = splane->format->yuv ? 8 : splane->format->bpp;
gem = drm_fb_cma_get_gem_obj(fb, 0);
splane->dma[0] = gem->paddr + fb->offsets[0]
+ y * fb->pitches[0] + x * bpp / 8;
if (splane->format->yuv) {
bpp = splane->format->bpp - 8;
gem = drm_fb_cma_get_gem_obj(fb, 1);
splane->dma[1] = gem->paddr + fb->offsets[1]
+ y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
+ x * (bpp == 16 ? 2 : 1);
}
}
static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane,
struct drm_framebuffer *fb)
{
struct shmob_drm_device *sdev = splane->plane.dev->dev_private;
u32 format;
/* TODO: Support ROP3 mode */
format = LDBBSIFR_EN | (splane->alpha << LDBBSIFR_LAY_SHIFT);
switch (splane->format->fourcc) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_NV21:
case DRM_FORMAT_NV61:
case DRM_FORMAT_NV42:
format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
break;
case DRM_FORMAT_RGB888:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV16:
case DRM_FORMAT_NV24:
format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
break;
case DRM_FORMAT_ARGB8888:
default:
format |= LDBBSIFR_SWPL;
break;
}
switch (splane->format->fourcc) {
case DRM_FORMAT_RGB565:
format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
break;
case DRM_FORMAT_RGB888:
format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
break;
case DRM_FORMAT_ARGB8888:
format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
break;
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV21:
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
break;
case DRM_FORMAT_NV16:
case DRM_FORMAT_NV61:
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
break;
case DRM_FORMAT_NV24:
case DRM_FORMAT_NV42:
format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
break;
}
#define plane_reg_dump(sdev, splane, reg) \
dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x 0x%08x\n", __func__, \
splane->index, #reg, \
lcdc_read(sdev, reg(splane->index)), \
lcdc_read(sdev, reg(splane->index) + LCDC_SIDE_B_OFFSET))
plane_reg_dump(sdev, splane, LDBnBSIFR);
plane_reg_dump(sdev, splane, LDBnBSSZR);
plane_reg_dump(sdev, splane, LDBnBLOCR);
plane_reg_dump(sdev, splane, LDBnBSMWR);
plane_reg_dump(sdev, splane, LDBnBSAYR);
plane_reg_dump(sdev, splane, LDBnBSACR);
lcdc_write(sdev, LDBCR, LDBCR_UPC(splane->index));
dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
"LDBCR", lcdc_read(sdev, LDBCR));
lcdc_write(sdev, LDBnBSIFR(splane->index), format);
lcdc_write(sdev, LDBnBSSZR(splane->index),
(splane->crtc_h << LDBBSSZR_BVSS_SHIFT) |
(splane->crtc_w << LDBBSSZR_BHSS_SHIFT));
lcdc_write(sdev, LDBnBLOCR(splane->index),
(splane->crtc_y << LDBBLOCR_CVLC_SHIFT) |
(splane->crtc_x << LDBBLOCR_CHLC_SHIFT));
lcdc_write(sdev, LDBnBSMWR(splane->index),
fb->pitches[0] << LDBBSMWR_BSMW_SHIFT);
shmob_drm_plane_compute_base(splane, fb, splane->src_x, splane->src_y);
lcdc_write(sdev, LDBnBSAYR(splane->index), splane->dma[0]);
if (splane->format->yuv)
lcdc_write(sdev, LDBnBSACR(splane->index), splane->dma[1]);
lcdc_write(sdev, LDBCR,
LDBCR_UPF(splane->index) | LDBCR_UPD(splane->index));
dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index,
"LDBCR", lcdc_read(sdev, LDBCR));
plane_reg_dump(sdev, splane, LDBnBSIFR);
plane_reg_dump(sdev, splane, LDBnBSSZR);
plane_reg_dump(sdev, splane, LDBnBLOCR);
plane_reg_dump(sdev, splane, LDBnBSMWR);
plane_reg_dump(sdev, splane, LDBnBSAYR);
plane_reg_dump(sdev, splane, LDBnBSACR);
}
void shmob_drm_plane_setup(struct drm_plane *plane)
{
struct shmob_drm_plane *splane = to_shmob_plane(plane);
if (plane->fb == NULL || !plane->enabled)
return;
__shmob_drm_plane_setup(splane, plane->fb);
}
static int
shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb, 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)
{
struct shmob_drm_plane *splane = to_shmob_plane(plane);
struct shmob_drm_device *sdev = plane->dev->dev_private;
const struct shmob_drm_format_info *format;
format = shmob_drm_format_info(fb->pixel_format);
if (format == NULL) {
dev_dbg(sdev->dev, "update_plane: unsupported format %08x\n",
fb->pixel_format);
return -EINVAL;
}
if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) {
dev_dbg(sdev->dev, "%s: scaling not supported\n", __func__);
return -EINVAL;
}
splane->format = format;
splane->src_x = src_x >> 16;
splane->src_y = src_y >> 16;
splane->crtc_x = crtc_x;
splane->crtc_y = crtc_y;
splane->crtc_w = crtc_w;
splane->crtc_h = crtc_h;
__shmob_drm_plane_setup(splane, fb);
return 0;
}
static int shmob_drm_plane_disable(struct drm_plane *plane)
{
struct shmob_drm_plane *splane = to_shmob_plane(plane);
struct shmob_drm_device *sdev = plane->dev->dev_private;
splane->format = NULL;
lcdc_write(sdev, LDBnBSIFR(splane->index), 0);
return 0;
}
static void shmob_drm_plane_destroy(struct drm_plane *plane)
{
struct shmob_drm_plane *splane = to_shmob_plane(plane);
shmob_drm_plane_disable(plane);
drm_plane_cleanup(plane);
kfree(splane);
}
static const struct drm_plane_funcs shmob_drm_plane_funcs = {
.update_plane = shmob_drm_plane_update,
.disable_plane = shmob_drm_plane_disable,
.destroy = shmob_drm_plane_destroy,
};
static const uint32_t formats[] = {
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_NV12,
DRM_FORMAT_NV21,
DRM_FORMAT_NV16,
DRM_FORMAT_NV61,
DRM_FORMAT_NV24,
DRM_FORMAT_NV42,
};
int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index)
{
struct shmob_drm_plane *splane;
int ret;
splane = kzalloc(sizeof(*splane), GFP_KERNEL);
if (splane == NULL)
return -ENOMEM;
splane->index = index;
splane->alpha = 255;
ret = drm_plane_init(sdev->ddev, &splane->plane, 1,
&shmob_drm_plane_funcs, formats,
ARRAY_SIZE(formats), false);
if (ret < 0)
kfree(splane);
return ret;
}
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