151 lines
3.6 KiB
C
151 lines
3.6 KiB
C
/*
|
|
* shmob_drm_kms.c -- SH Mobile DRM Mode Setting
|
|
*
|
|
* Copyright (C) 2012 Renesas Electronics 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 <drm/drm_gem_framebuffer_helper.h>
|
|
|
|
#include "shmob_drm_crtc.h"
|
|
#include "shmob_drm_drv.h"
|
|
#include "shmob_drm_kms.h"
|
|
#include "shmob_drm_regs.h"
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Format helpers
|
|
*/
|
|
|
|
static const struct shmob_drm_format_info shmob_drm_format_infos[] = {
|
|
{
|
|
.fourcc = DRM_FORMAT_RGB565,
|
|
.bpp = 16,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_RGB16,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_RGB888,
|
|
.bpp = 24,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_RGB24,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_ARGB8888,
|
|
.bpp = 32,
|
|
.yuv = false,
|
|
.lddfr = LDDFR_PKF_ARGB32,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV12,
|
|
.bpp = 12,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_420,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV21,
|
|
.bpp = 12,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_420,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV16,
|
|
.bpp = 16,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_422,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV61,
|
|
.bpp = 16,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_422,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV24,
|
|
.bpp = 24,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_444,
|
|
}, {
|
|
.fourcc = DRM_FORMAT_NV42,
|
|
.bpp = 24,
|
|
.yuv = true,
|
|
.lddfr = LDDFR_CC | LDDFR_YF_444,
|
|
},
|
|
};
|
|
|
|
const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(shmob_drm_format_infos); ++i) {
|
|
if (shmob_drm_format_infos[i].fourcc == fourcc)
|
|
return &shmob_drm_format_infos[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Frame buffer
|
|
*/
|
|
|
|
static struct drm_framebuffer *
|
|
shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
const struct shmob_drm_format_info *format;
|
|
|
|
format = shmob_drm_format_info(mode_cmd->pixel_format);
|
|
if (format == NULL) {
|
|
dev_dbg(dev->dev, "unsupported pixel format %08x\n",
|
|
mode_cmd->pixel_format);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (mode_cmd->pitches[0] & 7 || mode_cmd->pitches[0] >= 65536) {
|
|
dev_dbg(dev->dev, "invalid pitch value %u\n",
|
|
mode_cmd->pitches[0]);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (format->yuv) {
|
|
unsigned int chroma_cpp = format->bpp == 24 ? 2 : 1;
|
|
|
|
if (mode_cmd->pitches[1] != mode_cmd->pitches[0] * chroma_cpp) {
|
|
dev_dbg(dev->dev,
|
|
"luma and chroma pitches do not match\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
}
|
|
|
|
return drm_gem_fb_create(dev, file_priv, mode_cmd);
|
|
}
|
|
|
|
static const struct drm_mode_config_funcs shmob_drm_mode_config_funcs = {
|
|
.fb_create = shmob_drm_fb_create,
|
|
};
|
|
|
|
int shmob_drm_modeset_init(struct shmob_drm_device *sdev)
|
|
{
|
|
drm_mode_config_init(sdev->ddev);
|
|
|
|
shmob_drm_crtc_create(sdev);
|
|
shmob_drm_encoder_create(sdev);
|
|
shmob_drm_connector_create(sdev, &sdev->encoder.encoder);
|
|
|
|
drm_kms_helper_poll_init(sdev->ddev);
|
|
|
|
sdev->ddev->mode_config.min_width = 0;
|
|
sdev->ddev->mode_config.min_height = 0;
|
|
sdev->ddev->mode_config.max_width = 4095;
|
|
sdev->ddev->mode_config.max_height = 4095;
|
|
sdev->ddev->mode_config.funcs = &shmob_drm_mode_config_funcs;
|
|
|
|
drm_helper_disable_unused_functions(sdev->ddev);
|
|
|
|
return 0;
|
|
}
|