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b759012c5f
This controller provides output signals to interface directly a variety of LCD and TFT panels. These output signals are: RGB signals (up to 24bpp), vertical & horizontal synchronisations, data enable and the pixel clock. Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Yannick Fertre <yannick.fertre@st.com> Signed-off-by: Eric Anholt <eric@anholt.net> Link: http://patchwork.freedesktop.org/patch/msgid/1492164819-10513-5-git-send-email-yannick.fertre@st.com Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Eric Anholt <eric@anholt.net>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/*
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* Copyright (C) STMicroelectronics SA 2017
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*
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* Authors: Philippe Cornu <philippe.cornu@st.com>
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* Yannick Fertre <yannick.fertre@st.com>
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* Fabien Dessenne <fabien.dessenne@st.com>
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* Mickael Reulier <mickael.reulier@st.com>
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*
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* License terms: GNU General Public License (GPL), version 2
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*/
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#ifndef _LTDC_H_
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#define _LTDC_H_
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struct ltdc_caps {
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u32 hw_version; /* hardware version */
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u32 nb_layers; /* number of supported layers */
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u32 reg_ofs; /* register offset for applicable regs */
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u32 bus_width; /* bus width (32 or 64 bits) */
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const u32 *pix_fmt_hw; /* supported pixel formats */
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};
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struct ltdc_device {
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struct drm_fbdev_cma *fbdev;
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void __iomem *regs;
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struct clk *pixel_clk; /* lcd pixel clock */
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struct drm_panel *panel;
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struct mutex err_lock; /* protecting error_status */
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struct ltdc_caps caps;
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u32 clut[256]; /* color look up table */
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u32 error_status;
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u32 irq_status;
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};
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int ltdc_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe);
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void ltdc_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
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int ltdc_load(struct drm_device *ddev);
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void ltdc_unload(struct drm_device *ddev);
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#endif
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