63c381552f
Move code from ad-hoc fbdev callbacks into DRM client functions and remove the old callbacks. The functions instruct the client to poll for changed output or restore the display. The DRM core calls both, the old callbacks and the new client helpers, from the same places. The new functions perform the same operation as before, so there's no change in functionality. Replace all code that initializes or releases fbdev emulation throughout the driver. Instead initialize the fbdev client by a single call to armada_fbdev_setup() after armada has registered its DRM device. As in most drivers, aramda's fbdev emulation now acts like a regular DRM client. The fbdev client setup consists of the initial preparation and the hot-plugging of the display. The latter creates the fbdev device and sets up the fbdev framebuffer. The setup performs display hot-plugging once. If no display can be detected, DRM probe helpers re-run the detection on each hotplug event. A call to drm_dev_unregister() releases the client automatically. No further action is required within armada. If the fbdev framebuffer has been fully set up, struct fb_ops.fb_destroy implements the release. For partially initialized emulation, the fbdev client reverts the initial setup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230330073046.7150-5-tzimmermann@suse.de
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Russell King
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*/
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#ifndef ARMADA_DRM_H
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#define ARMADA_DRM_H
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#include <linux/kfifo.h>
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#include <linux/io.h>
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#include <linux/workqueue.h>
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#include <drm/drm_device.h>
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#include <drm/drm_mm.h>
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struct armada_crtc;
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struct armada_gem_object;
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struct clk;
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struct drm_display_mode;
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static inline void
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armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)
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{
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uint32_t ov, v;
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ov = v = readl_relaxed(ptr);
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v = (v & ~mask) | val;
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if (ov != v)
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writel_relaxed(v, ptr);
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}
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static inline uint32_t armada_pitch(uint32_t width, uint32_t bpp)
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{
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uint32_t pitch = bpp != 4 ? width * ((bpp + 7) / 8) : width / 2;
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/* 88AP510 spec recommends pitch be a multiple of 128 */
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return ALIGN(pitch, 128);
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}
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struct armada_private;
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struct armada_variant {
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bool has_spu_adv_reg;
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int (*init)(struct armada_crtc *, struct device *);
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int (*compute_clock)(struct armada_crtc *,
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const struct drm_display_mode *,
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uint32_t *);
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void (*disable)(struct armada_crtc *);
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void (*enable)(struct armada_crtc *, const struct drm_display_mode *);
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};
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/* Variant ops */
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extern const struct armada_variant armada510_ops;
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struct armada_private {
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struct drm_device drm;
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struct armada_crtc *dcrtc[2];
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struct drm_mm linear; /* protected by linear_lock */
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struct mutex linear_lock;
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struct drm_property *colorkey_prop;
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struct drm_property *colorkey_min_prop;
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struct drm_property *colorkey_max_prop;
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struct drm_property *colorkey_val_prop;
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struct drm_property *colorkey_alpha_prop;
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struct drm_property *colorkey_mode_prop;
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struct drm_property *brightness_prop;
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struct drm_property *contrast_prop;
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struct drm_property *saturation_prop;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *de;
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#endif
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};
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#define drm_to_armada_dev(dev) container_of(dev, struct armada_private, drm)
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#if defined(CONFIG_DRM_FBDEV_EMULATION)
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void armada_fbdev_setup(struct drm_device *dev);
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#else
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static inline void armada_fbdev_setup(struct drm_device *dev)
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{ }
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#endif
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int armada_overlay_plane_create(struct drm_device *, unsigned long);
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void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc);
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int armada_drm_debugfs_init(struct drm_minor *);
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#endif
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