74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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/*
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* csc.c: function required for color space conversion.
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*
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* Copyright (c) 2010-2018, NVIDIA CORPORATION, All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/err.h>
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#include <linux/types.h>
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#include <linux/export.h>
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#include "dc.h"
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#include "dc_reg.h"
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#include "dc_priv.h"
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void tegra_dc_init_win_csc_defaults(struct tegra_dc_win_csc *win_csc)
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{
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win_csc->yof = 0x00f0;
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win_csc->kyrgb = 0x012a;
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win_csc->kur = 0x0000;
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win_csc->kvr = 0x0198;
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win_csc->kug = 0x039b;
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win_csc->kvg = 0x032f;
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win_csc->kub = 0x0204;
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win_csc->kvb = 0x0000;
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}
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void tegra_dc_set_win_csc(struct tegra_dc *dc, struct tegra_dc_win_csc *win_csc)
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{
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tegra_dc_writel(dc, win_csc->yof, DC_WIN_CSC_YOF);
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tegra_dc_writel(dc, win_csc->kyrgb, DC_WIN_CSC_KYRGB);
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tegra_dc_writel(dc, win_csc->kur, DC_WIN_CSC_KUR);
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tegra_dc_writel(dc, win_csc->kvr, DC_WIN_CSC_KVR);
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tegra_dc_writel(dc, win_csc->kug, DC_WIN_CSC_KUG);
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tegra_dc_writel(dc, win_csc->kvg, DC_WIN_CSC_KVG);
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tegra_dc_writel(dc, win_csc->kub, DC_WIN_CSC_KUB);
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tegra_dc_writel(dc, win_csc->kvb, DC_WIN_CSC_KVB);
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}
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int tegra_dc_update_win_csc(struct tegra_dc *dc, int win_idx)
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{
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struct tegra_dc_win *win = tegra_dc_get_window(dc, win_idx);
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if (!win)
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return -EFAULT;
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mutex_lock(&dc->lock);
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if (!dc->enabled) {
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mutex_unlock(&dc->lock);
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return -EFAULT;
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}
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tegra_dc_get(dc);
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tegra_dc_writel(dc, WINDOW_A_SELECT << win_idx,
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DC_CMD_DISPLAY_WINDOW_HEADER);
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tegra_dc_set_win_csc(dc, &win->win_csc);
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tegra_dc_put(dc);
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mutex_unlock(&dc->lock);
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return 0;
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}
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EXPORT_SYMBOL(tegra_dc_update_win_csc);
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