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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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
1.8 KiB
C
58 lines
1.8 KiB
C
#ifndef _IMX_DRM_H_
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#define _IMX_DRM_H_
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struct device_node;
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struct drm_crtc;
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struct drm_connector;
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struct drm_device;
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struct drm_display_mode;
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struct drm_encoder;
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struct drm_fbdev_cma;
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struct drm_framebuffer;
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struct drm_plane;
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struct imx_drm_crtc;
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struct platform_device;
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int imx_drm_crtc_id(struct imx_drm_crtc *crtc);
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struct imx_drm_crtc_helper_funcs {
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int (*enable_vblank)(struct drm_crtc *crtc);
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void (*disable_vblank)(struct drm_crtc *crtc);
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int (*set_interface_pix_fmt)(struct drm_crtc *crtc,
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u32 bus_format, int hsync_pin, int vsync_pin);
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const struct drm_crtc_helper_funcs *crtc_helper_funcs;
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const struct drm_crtc_funcs *crtc_funcs;
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};
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int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
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struct imx_drm_crtc **new_crtc, struct drm_plane *primary_plane,
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const struct imx_drm_crtc_helper_funcs *imx_helper_funcs,
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struct device_node *port);
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int imx_drm_remove_crtc(struct imx_drm_crtc *);
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int imx_drm_init_drm(struct platform_device *pdev,
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int preferred_bpp);
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int imx_drm_exit_drm(void);
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int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc);
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void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc);
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void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc);
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void imx_drm_mode_config_init(struct drm_device *drm);
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struct drm_gem_cma_object *imx_drm_fb_get_obj(struct drm_framebuffer *fb);
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int imx_drm_set_bus_format_pins(struct drm_encoder *encoder,
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u32 bus_format, int hsync_pin, int vsync_pin);
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int imx_drm_set_bus_format(struct drm_encoder *encoder,
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u32 bus_format);
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int imx_drm_encoder_get_mux_id(struct device_node *node,
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struct drm_encoder *encoder);
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int imx_drm_encoder_parse_of(struct drm_device *drm,
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struct drm_encoder *encoder, struct device_node *np);
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void imx_drm_connector_destroy(struct drm_connector *connector);
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void imx_drm_encoder_destroy(struct drm_encoder *encoder);
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#endif /* _IMX_DRM_H_ */
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