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/*
* drivers/video/tegra/dc/ext/cursor.c
*
* Copyright (c) 2011-2014, NVIDIA CORPORATION, All rights reserved.
*
* Author: Robert Morell <rmorell@nvidia.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.
*
* 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.
*/
#include <video/tegra_dc_ext.h>
#include "tegra_dc_ext_priv.h"
/* ugh */
#include "../dc_priv.h"
#include "../dc_reg.h"
int tegra_dc_ext_get_cursor(struct tegra_dc_ext_user *user)
{
struct tegra_dc_ext *ext = user->ext;
int ret = 0;
mutex_lock(&ext->cursor.lock);
if (!ext->cursor.user)
ext->cursor.user = user;
else if (ext->cursor.user != user)
ret = -EBUSY;
mutex_unlock(&ext->cursor.lock);
return ret;
}
int tegra_dc_ext_put_cursor(struct tegra_dc_ext_user *user)
{
struct tegra_dc_ext *ext = user->ext;
int ret = 0;
mutex_lock(&ext->cursor.lock);
if (ext->cursor.user == user)
ext->cursor.user = 0;
else
ret = -EACCES;
mutex_unlock(&ext->cursor.lock);
return ret;
}
int tegra_dc_ext_set_cursor_image(struct tegra_dc_ext_user *user,
struct tegra_dc_ext_cursor_image *args)
{
struct tegra_dc_ext *ext = user->ext;
struct tegra_dc *dc = ext->dc;
struct tegra_dc_dmabuf *handle, *old_handle;
dma_addr_t phys_addr;
int ret;
u32 extformat = TEGRA_DC_EXT_CURSOR_FORMAT_FLAGS(args->flags);
u32 fg = CURSOR_COLOR(args->foreground.r,
args->foreground.g,
args->foreground.b);
u32 bg = CURSOR_COLOR(args->background.r,
args->background.g,
args->background.b);
unsigned extsize = TEGRA_DC_EXT_CURSOR_IMAGE_FLAGS_SIZE(args->flags);
enum tegra_dc_cursor_size size;
enum tegra_dc_cursor_format format;
switch (extsize) {
case TEGRA_DC_EXT_CURSOR_IMAGE_FLAGS_SIZE_32x32:
size = TEGRA_DC_CURSOR_SIZE_32X32;
break;
case TEGRA_DC_EXT_CURSOR_IMAGE_FLAGS_SIZE_64x64:
size = TEGRA_DC_CURSOR_SIZE_64X64;
break;
case TEGRA_DC_EXT_CURSOR_IMAGE_FLAGS_SIZE_128x128:
size = TEGRA_DC_CURSOR_SIZE_128X128;
break;
case TEGRA_DC_EXT_CURSOR_IMAGE_FLAGS_SIZE_256x256:
size = TEGRA_DC_CURSOR_SIZE_256X256;
break;
default:
return -EINVAL;
}
switch (extformat) {
case TEGRA_DC_EXT_CURSOR_FORMAT_2BIT_LEGACY:
format = TEGRA_DC_CURSOR_FORMAT_2BIT_LEGACY;
break;
case TEGRA_DC_EXT_CURSOR_FORMAT_RGBA_NON_PREMULT_ALPHA:
format = TEGRA_DC_CURSOR_FORMAT_RGBA_NON_PREMULT_ALPHA;
break;
case TEGRA_DC_EXT_CURSOR_FORMAT_RGBA_PREMULT_ALPHA:
format = TEGRA_DC_CURSOR_FORMAT_RGBA_PREMULT_ALPHA;
break;
default:
return -EINVAL;
}
mutex_lock(&ext->cursor.lock);
if (ext->cursor.user != user) {
ret = -EACCES;
goto unlock;
}
if (!ext->enabled) {
ret = -ENXIO;
goto unlock;
}
old_handle = ext->cursor.cur_handle;
ret = tegra_dc_ext_pin_window(user, args->buff_id, &handle, &phys_addr);
if (ret)
goto unlock;
ext->cursor.cur_handle = handle;
ret = tegra_dc_cursor_image(dc, format, size, fg, bg, phys_addr);
mutex_unlock(&ext->cursor.lock);
if (old_handle) {
dma_buf_unmap_attachment(old_handle->attach,
old_handle->sgt, DMA_TO_DEVICE);
dma_buf_detach(old_handle->buf, old_handle->attach);
dma_buf_put(old_handle->buf);
kfree(old_handle);
}
return ret;
unlock:
mutex_unlock(&ext->cursor.lock);
return ret;
}
int tegra_dc_ext_set_cursor(struct tegra_dc_ext_user *user,
struct tegra_dc_ext_cursor *args)
{
struct tegra_dc_ext *ext = user->ext;
struct tegra_dc *dc = ext->dc;
bool enable;
int ret;
mutex_lock(&ext->cursor.lock);
if (ext->cursor.user != user) {
ret = -EACCES;
goto unlock;
}
if (!ext->enabled) {
ret = -ENXIO;
goto unlock;
}
enable = !!(args->flags & TEGRA_DC_EXT_CURSOR_FLAGS_VISIBLE);
ret = tegra_dc_cursor_set(dc, enable, args->x, args->y);
mutex_unlock(&ext->cursor.lock);
return ret;
unlock:
mutex_unlock(&ext->cursor.lock);
return ret;
}
int tegra_dc_ext_cursor_clip(struct tegra_dc_ext_user *user,
int *args)
{
struct tegra_dc_ext *ext = user->ext;
struct tegra_dc *dc = ext->dc;
int ret;
mutex_lock(&ext->cursor.lock);
if (ext->cursor.user != user) {
ret = -EACCES;
goto unlock;
}
if (!ext->enabled) {
ret = -ENXIO;
goto unlock;
}
ret = tegra_dc_cursor_clip(dc, *args);
mutex_unlock(&ext->cursor.lock);
return ret;
unlock:
mutex_unlock(&ext->cursor.lock);
return ret;
}
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