2012-07-02 08:37:47 -06:00
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/*
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* drm kms/fb cma (contiguous memory allocator) helper functions
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*
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* Copyright (C) 2012 Analog Device Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*
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* Based on udl_fbdev.c
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* Copyright (C) 2012 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_fb_helper.h>
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2017-08-13 07:31:45 -06:00
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#include <drm/drm_framebuffer.h>
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2012-07-02 08:37:47 -06:00
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#include <drm/drm_gem_cma_helper.h>
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2017-08-13 07:31:45 -06:00
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#include <drm/drm_gem_framebuffer_helper.h>
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2012-07-02 08:37:47 -06:00
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#include <drm/drm_fb_cma_helper.h>
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2017-11-15 07:19:41 -07:00
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#include <drm/drm_print.h>
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2012-07-02 08:37:47 -06:00
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#include <linux/module.h>
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2016-04-28 09:18:35 -06:00
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#define DEFAULT_FBDEFIO_DELAY_MS 50
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2012-07-02 08:37:47 -06:00
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struct drm_fbdev_cma {
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struct drm_fb_helper fb_helper;
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2016-12-29 13:48:31 -07:00
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const struct drm_framebuffer_funcs *fb_funcs;
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2012-07-02 08:37:47 -06:00
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};
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2016-04-28 09:18:35 -06:00
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/**
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* DOC: framebuffer cma helper functions
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*
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* Provides helper functions for creating a cma (contiguous memory allocator)
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* backed framebuffer.
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*
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2017-09-24 06:26:25 -06:00
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* drm_gem_fb_create() is used in the &drm_mode_config_funcs.fb_create
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2016-05-11 10:09:18 -06:00
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* callback function to create a cma backed framebuffer.
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2016-04-28 09:18:35 -06:00
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*
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* An fbdev framebuffer backed by cma is also available by calling
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2017-11-15 07:19:41 -07:00
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* drm_fb_cma_fbdev_init(). drm_fb_cma_fbdev_fini() tears it down.
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2016-12-29 13:48:34 -07:00
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* If the &drm_framebuffer_funcs.dirty callback is set, fb_deferred_io will be
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* set up automatically. &drm_framebuffer_funcs.dirty is called by
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* drm_fb_helper_deferred_io() in process context (&struct delayed_work).
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2016-04-28 09:18:35 -06:00
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*
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2016-05-31 14:55:13 -06:00
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* Example fbdev deferred io code::
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2016-04-28 09:18:35 -06:00
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*
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2016-12-29 13:48:31 -07:00
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* static int driver_fb_dirty(struct drm_framebuffer *fb,
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* struct drm_file *file_priv,
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* unsigned flags, unsigned color,
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* struct drm_clip_rect *clips,
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* unsigned num_clips)
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2016-04-28 09:18:35 -06:00
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* {
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* struct drm_gem_cma_object *cma = drm_fb_cma_get_gem_obj(fb, 0);
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* ... push changes ...
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* return 0;
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* }
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*
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2016-12-29 13:48:31 -07:00
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* static struct drm_framebuffer_funcs driver_fb_funcs = {
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2017-09-24 06:26:25 -06:00
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* .destroy = drm_gem_fb_destroy,
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* .create_handle = drm_gem_fb_create_handle,
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2016-12-29 13:48:31 -07:00
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* .dirty = driver_fb_dirty,
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2016-04-28 09:18:35 -06:00
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* };
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*
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2016-12-29 13:48:31 -07:00
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* Initialize::
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2016-04-28 09:18:35 -06:00
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*
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2017-11-15 07:19:41 -07:00
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* fbdev = drm_fb_cma_fbdev_init_with_funcs(dev, 16,
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2016-04-28 09:18:35 -06:00
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* dev->mode_config.num_crtc,
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* dev->mode_config.num_connector,
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2016-12-29 13:48:31 -07:00
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* &driver_fb_funcs);
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2016-04-28 09:18:35 -06:00
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*
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*/
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2012-07-02 08:37:47 -06:00
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static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper)
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{
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return container_of(helper, struct drm_fbdev_cma, fb_helper);
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}
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/**
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* drm_fb_cma_get_gem_obj() - Get CMA GEM object for framebuffer
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* @fb: The framebuffer
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* @plane: Which plane
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*
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* Return the CMA GEM object for given framebuffer.
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*
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* This function will usually be called from the CRTC callback functions.
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*/
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struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
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2016-05-31 15:11:12 -06:00
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unsigned int plane)
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2012-07-02 08:37:47 -06:00
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{
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2017-08-13 07:31:45 -06:00
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struct drm_gem_object *gem;
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2012-07-02 08:37:47 -06:00
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2017-08-13 07:31:45 -06:00
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gem = drm_gem_fb_get_obj(fb, plane);
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if (!gem)
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2012-07-02 08:37:47 -06:00
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return NULL;
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2017-08-13 07:31:45 -06:00
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return to_drm_gem_cma_obj(gem);
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2012-07-02 08:37:47 -06:00
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}
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EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_obj);
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2017-04-14 04:13:32 -06:00
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/**
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* drm_fb_cma_get_gem_addr() - Get physical address for framebuffer
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* @fb: The framebuffer
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* @state: Which state of drm plane
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* @plane: Which plane
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* Return the CMA GEM address for given framebuffer.
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*
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* This function will usually be called from the PLANE callback functions.
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*/
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dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb,
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struct drm_plane_state *state,
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unsigned int plane)
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{
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2017-08-13 07:31:45 -06:00
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struct drm_gem_cma_object *obj;
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2017-04-14 04:13:32 -06:00
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dma_addr_t paddr;
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2017-08-13 07:31:45 -06:00
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obj = drm_fb_cma_get_gem_obj(fb, plane);
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if (!obj)
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2017-04-14 04:13:32 -06:00
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return 0;
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2017-08-13 07:31:45 -06:00
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paddr = obj->paddr + fb->offsets[plane];
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2017-04-14 04:13:32 -06:00
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paddr += fb->format->cpp[plane] * (state->src_x >> 16);
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paddr += fb->pitches[plane] * (state->src_y >> 16);
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return paddr;
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}
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EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_addr);
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2016-06-07 06:18:09 -06:00
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static int drm_fb_cma_mmap(struct fb_info *info, struct vm_area_struct *vma)
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{
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return dma_mmap_writecombine(info->device, vma, info->screen_base,
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info->fix.smem_start, info->fix.smem_len);
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}
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2012-07-02 08:37:47 -06:00
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static struct fb_ops drm_fbdev_cma_ops = {
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.owner = THIS_MODULE,
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2016-11-13 16:03:16 -07:00
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DRM_FB_HELPER_DEFAULT_OPS,
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2015-07-22 03:28:20 -06:00
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.fb_fillrect = drm_fb_helper_sys_fillrect,
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.fb_copyarea = drm_fb_helper_sys_copyarea,
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.fb_imageblit = drm_fb_helper_sys_imageblit,
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2016-06-07 06:18:09 -06:00
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.fb_mmap = drm_fb_cma_mmap,
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2012-07-02 08:37:47 -06:00
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};
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2016-04-28 09:18:35 -06:00
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static int drm_fbdev_cma_deferred_io_mmap(struct fb_info *info,
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struct vm_area_struct *vma)
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{
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fb_deferred_io_mmap(info, vma);
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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return 0;
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}
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static int drm_fbdev_cma_defio_init(struct fb_info *fbi,
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struct drm_gem_cma_object *cma_obj)
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{
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struct fb_deferred_io *fbdefio;
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struct fb_ops *fbops;
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/*
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* Per device structures are needed because:
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* fbops: fb_deferred_io_cleanup() clears fbops.fb_mmap
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* fbdefio: individual delays
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*/
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fbdefio = kzalloc(sizeof(*fbdefio), GFP_KERNEL);
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fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
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if (!fbdefio || !fbops) {
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kfree(fbdefio);
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2016-06-12 09:03:56 -06:00
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kfree(fbops);
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2016-04-28 09:18:35 -06:00
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return -ENOMEM;
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}
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/* can't be offset from vaddr since dirty() uses cma_obj */
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fbi->screen_buffer = cma_obj->vaddr;
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/* fb_deferred_io_fault() needs a physical address */
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fbi->fix.smem_start = page_to_phys(virt_to_page(fbi->screen_buffer));
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*fbops = *fbi->fbops;
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fbi->fbops = fbops;
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fbdefio->delay = msecs_to_jiffies(DEFAULT_FBDEFIO_DELAY_MS);
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fbdefio->deferred_io = drm_fb_helper_deferred_io;
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fbi->fbdefio = fbdefio;
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fb_deferred_io_init(fbi);
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fbi->fbops->fb_mmap = drm_fbdev_cma_deferred_io_mmap;
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return 0;
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}
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static void drm_fbdev_cma_defio_fini(struct fb_info *fbi)
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{
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if (!fbi->fbdefio)
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return;
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fb_deferred_io_cleanup(fbi);
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kfree(fbi->fbdefio);
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kfree(fbi->fbops);
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}
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2016-12-29 13:48:31 -07:00
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static int
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drm_fbdev_cma_create(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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2012-07-02 08:37:47 -06:00
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{
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struct drm_fbdev_cma *fbdev_cma = to_fbdev_cma(helper);
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struct drm_device *dev = helper->dev;
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struct drm_gem_cma_object *obj;
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struct drm_framebuffer *fb;
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unsigned int bytes_per_pixel;
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unsigned long offset;
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struct fb_info *fbi;
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size_t size;
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int ret;
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2012-10-20 04:32:46 -06:00
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DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d)\n",
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2012-07-02 08:37:47 -06:00
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sizes->surface_width, sizes->surface_height,
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sizes->surface_bpp);
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bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
|
2017-08-13 07:31:45 -06:00
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size = sizes->surface_width * sizes->surface_height * bytes_per_pixel;
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2012-07-02 08:37:47 -06:00
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obj = drm_gem_cma_create(dev, size);
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2012-10-20 04:32:47 -06:00
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if (IS_ERR(obj))
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2012-07-02 08:37:47 -06:00
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return -ENOMEM;
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2015-07-22 03:28:20 -06:00
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fbi = drm_fb_helper_alloc_fbi(helper);
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if (IS_ERR(fbi)) {
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ret = PTR_ERR(fbi);
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2015-12-14 17:26:26 -07:00
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goto err_gem_free_object;
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2012-07-02 08:37:47 -06:00
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}
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2017-08-13 07:31:45 -06:00
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fb = drm_gem_fbdev_fb_create(dev, sizes, 0, &obj->base,
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fbdev_cma->fb_funcs);
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if (IS_ERR(fb)) {
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2012-07-02 08:37:47 -06:00
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dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
|
2017-08-13 07:31:45 -06:00
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ret = PTR_ERR(fb);
|
2015-07-22 03:28:20 -06:00
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goto err_fb_info_destroy;
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2012-07-02 08:37:47 -06:00
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}
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helper->fb = fb;
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fbi->par = helper;
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fbi->flags = FBINFO_FLAG_DEFAULT;
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fbi->fbops = &drm_fbdev_cma_ops;
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|
2016-12-14 14:31:35 -07:00
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drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->format->depth);
|
2015-03-11 08:23:10 -06:00
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drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
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2012-07-02 08:37:47 -06:00
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offset = fbi->var.xoffset * bytes_per_pixel;
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offset += fbi->var.yoffset * fb->pitches[0];
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dev->mode_config.fb_base = (resource_size_t)obj->paddr;
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fbi->screen_base = obj->vaddr + offset;
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fbi->fix.smem_start = (unsigned long)(obj->paddr + offset);
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fbi->screen_size = size;
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fbi->fix.smem_len = size;
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|
2017-11-15 07:19:41 -07:00
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if (fb->funcs->dirty) {
|
2016-04-28 09:18:35 -06:00
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ret = drm_fbdev_cma_defio_init(fbi, obj);
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if (ret)
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goto err_cma_destroy;
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}
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|
2012-07-02 08:37:47 -06:00
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return 0;
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|
2016-04-28 09:18:35 -06:00
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err_cma_destroy:
|
2017-08-13 07:31:45 -06:00
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drm_framebuffer_remove(fb);
|
2015-07-22 03:28:20 -06:00
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err_fb_info_destroy:
|
2017-02-07 09:16:03 -07:00
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drm_fb_helper_fini(helper);
|
2015-12-14 17:26:26 -07:00
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err_gem_free_object:
|
2017-02-28 07:46:41 -07:00
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drm_gem_object_put_unlocked(&obj->base);
|
2012-07-02 08:37:47 -06:00
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return ret;
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}
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|
|
|
|
2014-06-27 09:19:23 -06:00
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static const struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = {
|
2013-01-21 15:42:49 -07:00
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.fb_probe = drm_fbdev_cma_create,
|
2012-07-02 08:37:47 -06:00
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};
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|
2017-11-15 07:19:41 -07:00
|
|
|
/**
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* drm_fb_cma_fbdev_init_with_funcs() - Allocate and initialize fbdev emulation
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* @dev: DRM device
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* @preferred_bpp: Preferred bits per pixel for the device.
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* @dev->mode_config.preferred_depth is used if this is zero.
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* @max_conn_count: Maximum number of connectors.
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* @dev->mode_config.num_connector is used if this is zero.
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* @funcs: Framebuffer functions, in particular a custom dirty() callback.
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* Can be NULL.
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*
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* Returns:
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* Zero on success or negative error code on failure.
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|
|
*/
|
|
|
|
int drm_fb_cma_fbdev_init_with_funcs(struct drm_device *dev,
|
|
|
|
unsigned int preferred_bpp, unsigned int max_conn_count,
|
|
|
|
const struct drm_framebuffer_funcs *funcs)
|
|
|
|
{
|
|
|
|
struct drm_fbdev_cma *fbdev_cma;
|
|
|
|
struct drm_fb_helper *fb_helper;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (!preferred_bpp)
|
|
|
|
preferred_bpp = dev->mode_config.preferred_depth;
|
|
|
|
if (!preferred_bpp)
|
|
|
|
preferred_bpp = 32;
|
|
|
|
|
|
|
|
if (!max_conn_count)
|
|
|
|
max_conn_count = dev->mode_config.num_connector;
|
|
|
|
|
|
|
|
fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL);
|
|
|
|
if (!fbdev_cma)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
fbdev_cma->fb_funcs = funcs;
|
|
|
|
fb_helper = &fbdev_cma->fb_helper;
|
|
|
|
|
|
|
|
drm_fb_helper_prepare(dev, fb_helper, &drm_fb_cma_helper_funcs);
|
|
|
|
|
|
|
|
ret = drm_fb_helper_init(dev, fb_helper, max_conn_count);
|
|
|
|
if (ret < 0) {
|
|
|
|
DRM_DEV_ERROR(dev->dev, "Failed to initialize fbdev helper.\n");
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(fb_helper);
|
|
|
|
if (ret < 0) {
|
|
|
|
DRM_DEV_ERROR(dev->dev, "Failed to add connectors.\n");
|
|
|
|
goto err_drm_fb_helper_fini;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_initial_config(fb_helper, preferred_bpp);
|
|
|
|
if (ret < 0) {
|
|
|
|
DRM_DEV_ERROR(dev->dev, "Failed to set fbdev configuration.\n");
|
|
|
|
goto err_drm_fb_helper_fini;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_drm_fb_helper_fini:
|
|
|
|
drm_fb_helper_fini(fb_helper);
|
|
|
|
err_free:
|
|
|
|
kfree(fbdev_cma);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_init_with_funcs);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_cma_fbdev_init() - Allocate and initialize fbdev emulation
|
|
|
|
* @dev: DRM device
|
|
|
|
* @preferred_bpp: Preferred bits per pixel for the device.
|
|
|
|
* @dev->mode_config.preferred_depth is used if this is zero.
|
|
|
|
* @max_conn_count: Maximum number of connectors.
|
|
|
|
* @dev->mode_config.num_connector is used if this is zero.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* Zero on success or negative error code on failure.
|
|
|
|
*/
|
|
|
|
int drm_fb_cma_fbdev_init(struct drm_device *dev, unsigned int preferred_bpp,
|
|
|
|
unsigned int max_conn_count)
|
|
|
|
{
|
|
|
|
return drm_fb_cma_fbdev_init_with_funcs(dev, preferred_bpp,
|
|
|
|
max_conn_count, NULL);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_init);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_cma_fbdev_fini() - Teardown fbdev emulation
|
|
|
|
* @dev: DRM device
|
|
|
|
*/
|
|
|
|
void drm_fb_cma_fbdev_fini(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_fb_helper *fb_helper = dev->fb_helper;
|
|
|
|
|
|
|
|
if (!fb_helper)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* Unregister if it hasn't been done already */
|
|
|
|
if (fb_helper->fbdev && fb_helper->fbdev->dev)
|
|
|
|
drm_fb_helper_unregister_fbi(fb_helper);
|
|
|
|
|
|
|
|
if (fb_helper->fbdev)
|
|
|
|
drm_fbdev_cma_defio_fini(fb_helper->fbdev);
|
|
|
|
|
|
|
|
if (fb_helper->fb)
|
|
|
|
drm_framebuffer_remove(fb_helper->fb);
|
|
|
|
|
|
|
|
drm_fb_helper_fini(fb_helper);
|
|
|
|
kfree(to_fbdev_cma(fb_helper));
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_fini);
|
|
|
|
|
2012-07-02 08:37:47 -06:00
|
|
|
/**
|
2016-04-28 09:18:35 -06:00
|
|
|
* drm_fbdev_cma_init_with_funcs() - Allocate and initializes a drm_fbdev_cma struct
|
2012-07-02 08:37:47 -06:00
|
|
|
* @dev: DRM device
|
|
|
|
* @preferred_bpp: Preferred bits per pixel for the device
|
|
|
|
* @max_conn_count: Maximum number of connectors
|
2016-12-29 13:48:31 -07:00
|
|
|
* @funcs: fb helper functions, in particular a custom dirty() callback
|
2012-07-02 08:37:47 -06:00
|
|
|
*
|
|
|
|
* Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR.
|
|
|
|
*/
|
2016-04-28 09:18:35 -06:00
|
|
|
struct drm_fbdev_cma *drm_fbdev_cma_init_with_funcs(struct drm_device *dev,
|
drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 09:26:40 -07:00
|
|
|
unsigned int preferred_bpp, unsigned int max_conn_count,
|
|
|
|
const struct drm_framebuffer_funcs *funcs)
|
2012-07-02 08:37:47 -06:00
|
|
|
{
|
|
|
|
struct drm_fbdev_cma *fbdev_cma;
|
|
|
|
struct drm_fb_helper *helper;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL);
|
|
|
|
if (!fbdev_cma) {
|
|
|
|
dev_err(dev->dev, "Failed to allocate drm fbdev.\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
2016-12-29 13:48:31 -07:00
|
|
|
fbdev_cma->fb_funcs = funcs;
|
2012-07-02 08:37:47 -06:00
|
|
|
|
|
|
|
helper = &fbdev_cma->fb_helper;
|
|
|
|
|
2016-12-29 13:48:31 -07:00
|
|
|
drm_fb_helper_prepare(dev, helper, &drm_fb_cma_helper_funcs);
|
2014-06-27 09:19:24 -06:00
|
|
|
|
drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 09:26:40 -07:00
|
|
|
ret = drm_fb_helper_init(dev, helper, max_conn_count);
|
2012-07-02 08:37:47 -06:00
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(dev->dev, "Failed to initialize drm fb helper.\n");
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(helper);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(dev->dev, "Failed to add connectors.\n");
|
|
|
|
goto err_drm_fb_helper_fini;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_initial_config(helper, preferred_bpp);
|
|
|
|
if (ret < 0) {
|
2013-05-21 08:13:12 -06:00
|
|
|
dev_err(dev->dev, "Failed to set initial hw configuration.\n");
|
2012-07-02 08:37:47 -06:00
|
|
|
goto err_drm_fb_helper_fini;
|
|
|
|
}
|
|
|
|
|
|
|
|
return fbdev_cma;
|
|
|
|
|
|
|
|
err_drm_fb_helper_fini:
|
|
|
|
drm_fb_helper_fini(helper);
|
|
|
|
err_free:
|
|
|
|
kfree(fbdev_cma);
|
|
|
|
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
}
|
2016-04-28 09:18:35 -06:00
|
|
|
EXPORT_SYMBOL_GPL(drm_fbdev_cma_init_with_funcs);
|
|
|
|
|
2017-08-13 07:31:45 -06:00
|
|
|
static const struct drm_framebuffer_funcs drm_fb_cma_funcs = {
|
|
|
|
.destroy = drm_gem_fb_destroy,
|
|
|
|
.create_handle = drm_gem_fb_create_handle,
|
|
|
|
};
|
|
|
|
|
2016-04-28 09:18:35 -06:00
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct
|
|
|
|
* @dev: DRM device
|
|
|
|
* @preferred_bpp: Preferred bits per pixel for the device
|
|
|
|
* @max_conn_count: Maximum number of connectors
|
|
|
|
*
|
|
|
|
* Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR.
|
|
|
|
*/
|
|
|
|
struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
|
drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 09:26:40 -07:00
|
|
|
unsigned int preferred_bpp, unsigned int max_conn_count)
|
2016-04-28 09:18:35 -06:00
|
|
|
{
|
drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 09:26:40 -07:00
|
|
|
return drm_fbdev_cma_init_with_funcs(dev, preferred_bpp,
|
|
|
|
max_conn_count,
|
|
|
|
&drm_fb_cma_funcs);
|
2016-04-28 09:18:35 -06:00
|
|
|
}
|
2012-07-02 08:37:47 -06:00
|
|
|
EXPORT_SYMBOL_GPL(drm_fbdev_cma_init);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_fini() - Free drm_fbdev_cma struct
|
|
|
|
* @fbdev_cma: The drm_fbdev_cma struct
|
|
|
|
*/
|
|
|
|
void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma)
|
|
|
|
{
|
2015-07-22 03:28:20 -06:00
|
|
|
drm_fb_helper_unregister_fbi(&fbdev_cma->fb_helper);
|
2016-10-19 18:32:19 -06:00
|
|
|
if (fbdev_cma->fb_helper.fbdev)
|
|
|
|
drm_fbdev_cma_defio_fini(fbdev_cma->fb_helper.fbdev);
|
2012-07-02 08:37:47 -06:00
|
|
|
|
2017-08-13 07:31:45 -06:00
|
|
|
if (fbdev_cma->fb_helper.fb)
|
|
|
|
drm_framebuffer_remove(fbdev_cma->fb_helper.fb);
|
2012-07-02 08:37:47 -06:00
|
|
|
|
|
|
|
drm_fb_helper_fini(&fbdev_cma->fb_helper);
|
|
|
|
kfree(fbdev_cma);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_restore_mode() - Restores initial framebuffer mode
|
|
|
|
* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
|
|
|
|
*
|
2016-12-29 13:48:34 -07:00
|
|
|
* This function is usually called from the &drm_driver.lastclose callback.
|
2012-07-02 08:37:47 -06:00
|
|
|
*/
|
|
|
|
void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma)
|
|
|
|
{
|
2014-05-30 10:29:48 -06:00
|
|
|
if (fbdev_cma)
|
|
|
|
drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev_cma->fb_helper);
|
2012-07-02 08:37:47 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_hotplug_event() - Poll for hotpulug events
|
|
|
|
* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
|
|
|
|
*
|
2016-12-29 13:48:34 -07:00
|
|
|
* This function is usually called from the &drm_mode_config.output_poll_changed
|
2012-07-02 08:37:47 -06:00
|
|
|
* callback.
|
|
|
|
*/
|
|
|
|
void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
|
|
|
|
{
|
|
|
|
if (fbdev_cma)
|
|
|
|
drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
|
2016-02-11 18:30:14 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
|
|
|
|
* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
|
|
|
|
* @state: desired state, zero to resume, non-zero to suspend
|
|
|
|
*
|
|
|
|
* Calls drm_fb_helper_set_suspend, which is a wrapper around
|
|
|
|
* fb_set_suspend implemented by fbdev core.
|
|
|
|
*/
|
2017-06-20 04:23:20 -06:00
|
|
|
void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state)
|
2016-02-11 18:30:14 -07:00
|
|
|
{
|
|
|
|
if (fbdev_cma)
|
|
|
|
drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
|
2017-01-22 11:11:09 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fbdev_cma_set_suspend_unlocked - wrapper around
|
|
|
|
* drm_fb_helper_set_suspend_unlocked
|
|
|
|
* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
|
|
|
|
* @state: desired state, zero to resume, non-zero to suspend
|
|
|
|
*
|
|
|
|
* Calls drm_fb_helper_set_suspend, which is a wrapper around
|
|
|
|
* fb_set_suspend implemented by fbdev core.
|
|
|
|
*/
|
|
|
|
void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
|
2017-06-20 04:23:20 -06:00
|
|
|
bool state)
|
2017-01-22 11:11:09 -07:00
|
|
|
{
|
|
|
|
if (fbdev_cma)
|
|
|
|
drm_fb_helper_set_suspend_unlocked(&fbdev_cma->fb_helper,
|
|
|
|
state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fbdev_cma_set_suspend_unlocked);
|