forked from Minki/linux
4389559980
Use drm_universal_plane_init to create the planes, create the primary plane first and use drm_crtc_init_with_planes to associate it with the crtc. This gets rid of the unused fallback primary plane previously created by drm_crtc_init and fixes a NULL pointer dereference issue that can be triggered by a modeset from userspace when fbdev helpers are enabled [1]. [1] https://lkml.org/lkml/2015/11/4/107 Reported-by: Liu Ying <Ying.Liu@freescale.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Liu Ying <Ying.Liu@freescale.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#ifndef __IPUV3_PLANE_H__
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#define __IPUV3_PLANE_H__
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#include <drm/drm_crtc.h> /* drm_plane */
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struct drm_plane;
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struct drm_device;
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struct ipu_soc;
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struct drm_crtc;
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struct drm_framebuffer;
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struct ipuv3_channel;
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struct dmfc_channel;
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struct ipu_dp;
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struct ipu_plane {
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struct drm_plane base;
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struct ipu_soc *ipu;
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struct ipuv3_channel *ipu_ch;
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struct dmfc_channel *dmfc;
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struct ipu_dp *dp;
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int dma;
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int dp_flow;
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int x;
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int y;
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int w;
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int h;
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bool enabled;
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};
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struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
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int dma, int dp, unsigned int possible_crtcs,
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enum drm_plane_type type);
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/* Init IDMAC, DMFC, DP */
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int ipu_plane_mode_set(struct ipu_plane *plane, struct drm_crtc *crtc,
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struct drm_display_mode *mode,
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struct drm_framebuffer *fb, int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y, uint32_t src_w,
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uint32_t src_h, bool interlaced);
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void ipu_plane_enable(struct ipu_plane *plane);
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void ipu_plane_disable(struct ipu_plane *plane);
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int ipu_plane_set_base(struct ipu_plane *plane, struct drm_framebuffer *fb,
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int x, int y);
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int ipu_plane_get_resources(struct ipu_plane *plane);
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void ipu_plane_put_resources(struct ipu_plane *plane);
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int ipu_plane_irq(struct ipu_plane *plane);
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#endif
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