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/*
* Copyright (C) 2016 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
* Copyright (C) 2014 Endless Mobile
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
* Written by:
* Jasper St. Pierre <jstpierre@mecheye.net>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_rect.h>
#include "meson_plane.h"
#include "meson_vpp.h"
#include "meson_viu.h"
#include "meson_canvas.h"
#include "meson_registers.h"
struct meson_plane {
struct drm_plane base;
struct meson_drm *priv;
};
#define to_meson_plane(x) container_of(x, struct meson_plane, base)
static int meson_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_crtc_state *crtc_state;
if (!state->crtc)
return 0;
crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
return drm_atomic_helper_check_plane_state(state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
}
/* Takes a fixed 16.16 number and converts it to integer. */
static inline int64_t fixed16_to_int(int64_t value)
{
return value >> 16;
}
static void meson_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct meson_plane *meson_plane = to_meson_plane(plane);
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
struct meson_drm *priv = meson_plane->priv;
struct drm_gem_cma_object *gem;
struct drm_rect src = {
.x1 = (state->src_x),
.y1 = (state->src_y),
.x2 = (state->src_x + state->src_w),
.y2 = (state->src_y + state->src_h),
};
struct drm_rect dest = {
.x1 = state->crtc_x,
.y1 = state->crtc_y,
.x2 = state->crtc_x + state->crtc_w,
.y2 = state->crtc_y + state->crtc_h,
};
unsigned long flags;
/*
* Update Coordinates
* Update Formats
* Update Buffer
* Enable Plane
*/
spin_lock_irqsave(&priv->drm->event_lock, flags);
/* Enable OSD and BLK0, set max global alpha */
priv->viu.osd1_ctrl_stat = OSD_ENABLE |
(0xFF << OSD_GLOBAL_ALPHA_SHIFT) |
OSD_BLK0_ENABLE;
/* Set up BLK0 to point to the right canvas */
priv->viu.osd1_blk0_cfg[0] = ((MESON_CANVAS_ID_OSD1 << OSD_CANVAS_SEL) |
OSD_ENDIANNESS_LE);
/* On GXBB, Use the old non-HDR RGB2YUV converter */
if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
priv->viu.osd1_blk0_cfg[0] |= OSD_OUTPUT_COLOR_RGB;
switch (fb->format->format) {
case DRM_FORMAT_XRGB8888:
/* For XRGB, replace the pixel's alpha by 0xFF */
writel_bits_relaxed(OSD_REPLACE_EN, OSD_REPLACE_EN,
priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));
priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 |
OSD_COLOR_MATRIX_32_ARGB;
break;
case DRM_FORMAT_ARGB8888:
/* For ARGB, use the pixel's alpha */
writel_bits_relaxed(OSD_REPLACE_EN, 0,
priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));
priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 |
OSD_COLOR_MATRIX_32_ARGB;
break;
case DRM_FORMAT_RGB888:
priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_24 |
OSD_COLOR_MATRIX_24_RGB;
break;
case DRM_FORMAT_RGB565:
priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_16 |
OSD_COLOR_MATRIX_16_RGB565;
break;
};
if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) {
priv->viu.osd1_interlace = true;
dest.y1 /= 2;
dest.y2 /= 2;
} else
priv->viu.osd1_interlace = false;
/*
* The format of these registers is (x2 << 16 | x1),
* where x2 is exclusive.
* e.g. +30x1920 would be (1919 << 16) | 30
*/
priv->viu.osd1_blk0_cfg[1] = ((fixed16_to_int(src.x2) - 1) << 16) |
fixed16_to_int(src.x1);
priv->viu.osd1_blk0_cfg[2] = ((fixed16_to_int(src.y2) - 1) << 16) |
fixed16_to_int(src.y1);
priv->viu.osd1_blk0_cfg[3] = ((dest.x2 - 1) << 16) | dest.x1;
priv->viu.osd1_blk0_cfg[4] = ((dest.y2 - 1) << 16) | dest.y1;
/* Update Canvas with buffer address */
gem = drm_fb_cma_get_gem_obj(fb, 0);
priv->viu.osd1_addr = gem->paddr;
priv->viu.osd1_stride = fb->pitches[0];
priv->viu.osd1_height = fb->height;
spin_unlock_irqrestore(&priv->drm->event_lock, flags);
}
static void meson_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct meson_plane *meson_plane = to_meson_plane(plane);
struct meson_drm *priv = meson_plane->priv;
/* Disable OSD1 */
writel_bits_relaxed(VPP_OSD1_POSTBLEND, 0,
priv->io_base + _REG(VPP_MISC));
}
static const struct drm_plane_helper_funcs meson_plane_helper_funcs = {
.atomic_check = meson_plane_atomic_check,
.atomic_disable = meson_plane_atomic_disable,
.atomic_update = meson_plane_atomic_update,
};
static const struct drm_plane_funcs meson_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static const uint32_t supported_drm_formats[] = {
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_RGB888,
DRM_FORMAT_RGB565,
};
int meson_plane_create(struct meson_drm *priv)
{
struct meson_plane *meson_plane;
struct drm_plane *plane;
meson_plane = devm_kzalloc(priv->drm->dev, sizeof(*meson_plane),
GFP_KERNEL);
if (!meson_plane)
return -ENOMEM;
meson_plane->priv = priv;
plane = &meson_plane->base;
drm_universal_plane_init(priv->drm, plane, 0xFF,
&meson_plane_funcs,
supported_drm_formats,
ARRAY_SIZE(supported_drm_formats),
NULL,
DRM_PLANE_TYPE_PRIMARY, "meson_primary_plane");
drm_plane_helper_add(plane, &meson_plane_helper_funcs);
priv->primary_plane = plane;
return 0;
}
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