forked from Minki/linux
d920e8da3d
The MCDE driver differentiates only between "te_sync"
(for hardware TE0 sync) and software sync
(i.e. manually triggered updates) at the moment.
However, none of these options work correctly for video mode panels.
Therefore, we need to make some changes to make them work correctly:
- Select hardware sync coming from the (DSI) formatter.
- Keep the FIFO permanently enabled (otherwise MCDE will stop
feeding data to the panel).
- Skip manual software sync (this is not necessary in video mode).
Automatically detect if the connected panel is using video mode
and enable the necessary changes in that case.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106165835.2863-3-stephan@gerhold.net
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 Linus Walleij <linus.walleij@linaro.org>
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* Parts of this file were based on the MCDE driver by Marcus Lorentzon
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* (C) ST-Ericsson SA 2013
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*/
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#include <drm/drm_simple_kms_helper.h>
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#ifndef _MCDE_DRM_H_
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#define _MCDE_DRM_H_
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struct mcde {
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struct drm_device drm;
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struct device *dev;
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struct drm_panel *panel;
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struct drm_bridge *bridge;
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struct drm_connector *connector;
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struct drm_simple_display_pipe pipe;
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struct mipi_dsi_device *mdsi;
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s16 stride;
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bool te_sync;
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bool video_mode;
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bool oneshot_mode;
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unsigned int flow_active;
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spinlock_t flow_lock; /* Locks the channel flow control */
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void __iomem *regs;
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struct clk *mcde_clk;
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struct clk *lcd_clk;
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struct clk *hdmi_clk;
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struct regulator *epod;
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struct regulator *vana;
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};
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bool mcde_dsi_irq(struct mipi_dsi_device *mdsi);
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void mcde_dsi_te_request(struct mipi_dsi_device *mdsi);
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extern struct platform_driver mcde_dsi_driver;
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void mcde_display_irq(struct mcde *mcde);
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void mcde_display_disable_irqs(struct mcde *mcde);
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int mcde_display_init(struct drm_device *drm);
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#endif /* _MCDE_DRM_H_ */
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