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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2016-11-14 03:07:31 -07:00
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#include <drm/drm_atomic.h>
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2012-07-02 08:37:47 -06:00
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#include <drm/drm_crtc.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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2016-11-14 03:07:31 -07:00
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#include <linux/dma-buf.h>
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2016-06-07 06:18:09 -06:00
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#include <linux/dma-mapping.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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2016-11-14 03:07:31 -07:00
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#include <linux/reservation.h>
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2012-07-02 08:37:47 -06:00
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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_fb_cma {
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struct drm_framebuffer fb;
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struct drm_gem_cma_object *obj[4];
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};
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struct drm_fbdev_cma {
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struct drm_fb_helper fb_helper;
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struct drm_fb_cma *fb;
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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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2016-12-29 13:48:34 -07:00
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* drm_fb_cma_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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* drm_fbdev_cma_init(). drm_fbdev_cma_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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2016-04-28 09:18:35 -06:00
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* .destroy = drm_fb_cma_destroy,
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* .create_handle = drm_fb_cma_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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* fbdev = drm_fbdev_cma_init_with_funcs(dev, 16,
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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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static inline struct drm_fb_cma *to_fb_cma(struct drm_framebuffer *fb)
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{
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return container_of(fb, struct drm_fb_cma, fb);
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}
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2016-04-28 09:18:35 -06:00
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void drm_fb_cma_destroy(struct drm_framebuffer *fb)
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2012-07-02 08:37:47 -06:00
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{
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struct drm_fb_cma *fb_cma = to_fb_cma(fb);
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int i;
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for (i = 0; i < 4; i++) {
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if (fb_cma->obj[i])
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2017-02-28 07:46:41 -07:00
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drm_gem_object_put_unlocked(&fb_cma->obj[i]->base);
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2012-07-02 08:37:47 -06:00
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}
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drm_framebuffer_cleanup(fb);
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kfree(fb_cma);
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}
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2016-04-28 09:18:35 -06:00
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EXPORT_SYMBOL(drm_fb_cma_destroy);
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2012-07-02 08:37:47 -06:00
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2016-04-28 09:18:35 -06:00
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int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
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2012-07-02 08:37:47 -06:00
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struct drm_file *file_priv, unsigned int *handle)
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{
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struct drm_fb_cma *fb_cma = to_fb_cma(fb);
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return drm_gem_handle_create(file_priv,
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&fb_cma->obj[0]->base, handle);
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}
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2016-04-28 09:18:35 -06:00
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EXPORT_SYMBOL(drm_fb_cma_create_handle);
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2012-07-02 08:37:47 -06:00
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static struct drm_framebuffer_funcs drm_fb_cma_funcs = {
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.destroy = drm_fb_cma_destroy,
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.create_handle = drm_fb_cma_create_handle,
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};
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static struct drm_fb_cma *drm_fb_cma_alloc(struct drm_device *dev,
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2016-01-20 03:59:34 -07:00
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_cma_object **obj,
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2016-05-12 12:25:21 -06:00
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unsigned int num_planes, const struct drm_framebuffer_funcs *funcs)
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2012-07-02 08:37:47 -06:00
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{
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struct drm_fb_cma *fb_cma;
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int ret;
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int i;
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fb_cma = kzalloc(sizeof(*fb_cma), GFP_KERNEL);
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if (!fb_cma)
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return ERR_PTR(-ENOMEM);
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drm: Pass 'dev' to drm_helper_mode_fill_fb_struct()
Pass the drm_device to drm_helper_mode_fill_fb_struct() so that we can
populate fb->dev early. Will make it easier to use the fb before we
register it.
@@
identifier fb, mode_cmd;
@@
void drm_helper_mode_fill_fb_struct(
+ struct drm_device *dev,
struct drm_framebuffer *fb,
const struct drm_mode_fb_cmd2 *mode_cmd
);
@@
identifier fb, mode_cmd;
@@
void drm_helper_mode_fill_fb_struct(
+ struct drm_device *dev,
struct drm_framebuffer *fb,
const struct drm_mode_fb_cmd2 *mode_cmd
)
{ ... }
@@
function func;
identifier dev;
expression E1, E2;
@@
func(struct drm_device *dev, ...)
{
...
drm_helper_mode_fill_fb_struct(
+ dev,
E1, E2);
...
}
@@
expression E1, E2;
@@
drm_helper_mode_fill_fb_struct(
+ dev,
E1, E2);
v2: Rerun spatch due to code changes
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1481748539-18283-1-git-send-email-ville.syrjala@linux.intel.com
2016-12-14 13:48:59 -07:00
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drm_helper_mode_fill_fb_struct(dev, &fb_cma->fb, mode_cmd);
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2012-12-13 15:38:38 -07:00
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for (i = 0; i < num_planes; i++)
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fb_cma->obj[i] = obj[i];
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2016-04-28 09:18:35 -06:00
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ret = drm_framebuffer_init(dev, &fb_cma->fb, funcs);
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2012-07-02 08:37:47 -06:00
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if (ret) {
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2013-05-21 08:13:12 -06:00
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dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", ret);
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2012-07-02 08:37:47 -06:00
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kfree(fb_cma);
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return ERR_PTR(ret);
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}
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return fb_cma;
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}
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/**
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2016-05-12 12:25:22 -06:00
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* drm_fb_cma_create_with_funcs() - helper function for the
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2016-12-29 13:48:34 -07:00
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* &drm_mode_config_funcs.fb_create
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* callback
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2016-05-31 15:11:12 -06:00
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* @dev: DRM device
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* @file_priv: drm file for the ioctl call
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* @mode_cmd: metadata from the userspace fb creation request
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* @funcs: vtable to be used for the new framebuffer object
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2012-07-02 08:37:47 -06:00
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*
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2016-05-12 12:25:22 -06:00
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* This can be used to set &drm_framebuffer_funcs for drivers that need the
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2016-12-29 13:48:34 -07:00
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* &drm_framebuffer_funcs.dirty callback. Use drm_fb_cma_create() if you don't
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* need to change &drm_framebuffer_funcs.
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2012-07-02 08:37:47 -06:00
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*/
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2016-05-12 12:25:22 -06:00
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struct drm_framebuffer *drm_fb_cma_create_with_funcs(struct drm_device *dev,
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struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd,
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const struct drm_framebuffer_funcs *funcs)
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2012-07-02 08:37:47 -06:00
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{
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2016-10-17 16:41:11 -06:00
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const struct drm_format_info *info;
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2012-07-02 08:37:47 -06:00
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struct drm_fb_cma *fb_cma;
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struct drm_gem_cma_object *objs[4];
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struct drm_gem_object *obj;
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int ret;
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int i;
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2017-03-21 12:12:16 -06:00
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info = drm_get_format_info(dev, mode_cmd);
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2016-10-17 16:41:11 -06:00
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if (!info)
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return ERR_PTR(-EINVAL);
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2012-07-02 08:37:47 -06:00
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2016-10-17 16:41:11 -06:00
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for (i = 0; i < info->num_planes; i++) {
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unsigned int width = mode_cmd->width / (i ? info->hsub : 1);
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unsigned int height = mode_cmd->height / (i ? info->vsub : 1);
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2012-07-02 08:37:47 -06:00
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unsigned int min_size;
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2016-05-09 04:04:54 -06:00
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obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
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2012-07-02 08:37:47 -06:00
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if (!obj) {
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dev_err(dev->dev, "Failed to lookup GEM object\n");
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ret = -ENXIO;
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2017-02-28 07:46:41 -07:00
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goto err_gem_object_put;
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2012-07-02 08:37:47 -06:00
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}
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min_size = (height - 1) * mode_cmd->pitches[i]
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2016-10-17 16:41:11 -06:00
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+ width * info->cpp[i]
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2012-07-02 08:37:47 -06:00
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+ mode_cmd->offsets[i];
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if (obj->size < min_size) {
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2017-02-28 07:46:41 -07:00
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drm_gem_object_put_unlocked(obj);
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2012-07-02 08:37:47 -06:00
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ret = -EINVAL;
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2017-02-28 07:46:41 -07:00
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goto err_gem_object_put;
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2012-07-02 08:37:47 -06:00
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}
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objs[i] = to_drm_gem_cma_obj(obj);
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}
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2016-05-12 12:25:22 -06:00
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fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i, funcs);
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2012-07-02 08:37:47 -06:00
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if (IS_ERR(fb_cma)) {
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ret = PTR_ERR(fb_cma);
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2017-02-28 07:46:41 -07:00
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goto err_gem_object_put;
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2012-07-02 08:37:47 -06:00
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}
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return &fb_cma->fb;
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2017-02-28 07:46:41 -07:00
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err_gem_object_put:
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2012-07-02 08:37:47 -06:00
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for (i--; i >= 0; i--)
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2017-02-28 07:46:41 -07:00
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drm_gem_object_put_unlocked(&objs[i]->base);
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2012-07-02 08:37:47 -06:00
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return ERR_PTR(ret);
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}
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2016-05-12 12:25:22 -06:00
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EXPORT_SYMBOL_GPL(drm_fb_cma_create_with_funcs);
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/**
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2016-12-29 13:48:34 -07:00
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* drm_fb_cma_create() - &drm_mode_config_funcs.fb_create callback function
|
2016-05-31 15:11:12 -06:00
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* @dev: DRM device
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* @file_priv: drm file for the ioctl call
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* @mode_cmd: metadata from the userspace fb creation request
|
2016-05-12 12:25:22 -06:00
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*
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* If your hardware has special alignment or pitch requirements these should be
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* checked before calling this function. Use drm_fb_cma_create_with_funcs() if
|
2016-12-29 13:48:34 -07:00
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* you need to set &drm_framebuffer_funcs.dirty.
|
2016-05-12 12:25:22 -06:00
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*/
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struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
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struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
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{
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return drm_fb_cma_create_with_funcs(dev, file_priv, mode_cmd,
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&drm_fb_cma_funcs);
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}
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2012-07-02 08:37:47 -06:00
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EXPORT_SYMBOL_GPL(drm_fb_cma_create);
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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,
|
2016-05-31 15:11:12 -06:00
|
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unsigned int plane)
|
2012-07-02 08:37:47 -06:00
|
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{
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struct drm_fb_cma *fb_cma = to_fb_cma(fb);
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if (plane >= 4)
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return NULL;
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return fb_cma->obj[plane];
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}
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EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_obj);
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|
2016-11-14 03:07:31 -07:00
|
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/**
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|
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* drm_fb_cma_prepare_fb() - Prepare CMA framebuffer
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* @plane: Which plane
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* @state: Plane state attach fence to
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*
|
2016-12-29 13:48:34 -07:00
|
|
|
* This should be set as the &struct drm_plane_helper_funcs.prepare_fb hook.
|
2016-11-14 03:07:31 -07:00
|
|
|
*
|
|
|
|
* This function checks if the plane FB has an dma-buf attached, extracts
|
|
|
|
* the exclusive fence and attaches it to plane state for the atomic helper
|
|
|
|
* to wait on.
|
|
|
|
*
|
|
|
|
* There is no need for cleanup_fb for CMA based framebuffer drivers.
|
|
|
|
*/
|
|
|
|
int drm_fb_cma_prepare_fb(struct drm_plane *plane,
|
|
|
|
struct drm_plane_state *state)
|
|
|
|
{
|
|
|
|
struct dma_buf *dma_buf;
|
|
|
|
struct dma_fence *fence;
|
|
|
|
|
|
|
|
if ((plane->state->fb == state->fb) || !state->fb)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
dma_buf = drm_fb_cma_get_gem_obj(state->fb, 0)->base.dma_buf;
|
|
|
|
if (dma_buf) {
|
|
|
|
fence = reservation_object_get_excl_rcu(dma_buf->resv);
|
|
|
|
drm_atomic_set_fence_for_plane(state, fence);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fb_cma_prepare_fb);
|
|
|
|
|
2012-12-10 09:46:43 -07:00
|
|
|
#ifdef CONFIG_DEBUG_FS
|
2013-08-19 17:53:08 -06:00
|
|
|
static void drm_fb_cma_describe(struct drm_framebuffer *fb, struct seq_file *m)
|
2012-12-10 09:46:43 -07:00
|
|
|
{
|
|
|
|
struct drm_fb_cma *fb_cma = to_fb_cma(fb);
|
2016-10-17 16:41:11 -06:00
|
|
|
int i;
|
2012-12-10 09:46:43 -07:00
|
|
|
|
|
|
|
seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
|
2016-12-14 14:32:55 -07:00
|
|
|
(char *)&fb->format->format);
|
2012-12-10 09:46:43 -07:00
|
|
|
|
2016-12-15 07:29:27 -07:00
|
|
|
for (i = 0; i < fb->format->num_planes; i++) {
|
2012-12-10 09:46:43 -07:00
|
|
|
seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
|
|
|
|
i, fb->offsets[i], fb->pitches[i]);
|
|
|
|
drm_gem_cma_describe(fb_cma->obj[i], m);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* drm_fb_cma_debugfs_show() - Helper to list CMA framebuffer objects
|
2016-05-31 15:11:12 -06:00
|
|
|
* in debugfs.
|
|
|
|
* @m: output file
|
|
|
|
* @arg: private data for the callback
|
2012-12-10 09:46:43 -07:00
|
|
|
*/
|
|
|
|
int drm_fb_cma_debugfs_show(struct seq_file *m, void *arg)
|
|
|
|
{
|
|
|
|
struct drm_info_node *node = (struct drm_info_node *) m->private;
|
|
|
|
struct drm_device *dev = node->minor->dev;
|
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
|
2015-07-09 15:32:34 -06:00
|
|
|
mutex_lock(&dev->mode_config.fb_lock);
|
2015-07-09 15:44:35 -06:00
|
|
|
drm_for_each_fb(fb, dev)
|
2012-12-10 09:46:43 -07:00
|
|
|
drm_fb_cma_describe(fb, m);
|
2015-07-09 15:32:34 -06:00
|
|
|
mutex_unlock(&dev->mode_config.fb_lock);
|
2012-12-10 09:46:43 -07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(drm_fb_cma_debugfs_show);
|
|
|
|
#endif
|
|
|
|
|
2016-06-07 06:18:09 -06:00
|
|
|
static int drm_fb_cma_mmap(struct fb_info *info, struct vm_area_struct *vma)
|
|
|
|
{
|
|
|
|
return dma_mmap_writecombine(info->device, vma, info->screen_base,
|
|
|
|
info->fix.smem_start, info->fix.smem_len);
|
|
|
|
}
|
|
|
|
|
2012-07-02 08:37:47 -06:00
|
|
|
static struct fb_ops drm_fbdev_cma_ops = {
|
|
|
|
.owner = THIS_MODULE,
|
2016-11-13 16:03:16 -07:00
|
|
|
DRM_FB_HELPER_DEFAULT_OPS,
|
2015-07-22 03:28:20 -06:00
|
|
|
.fb_fillrect = drm_fb_helper_sys_fillrect,
|
|
|
|
.fb_copyarea = drm_fb_helper_sys_copyarea,
|
|
|
|
.fb_imageblit = drm_fb_helper_sys_imageblit,
|
2016-06-07 06:18:09 -06:00
|
|
|
.fb_mmap = drm_fb_cma_mmap,
|
2012-07-02 08:37:47 -06:00
|
|
|
};
|
|
|
|
|
2016-04-28 09:18:35 -06:00
|
|
|
static int drm_fbdev_cma_deferred_io_mmap(struct fb_info *info,
|
|
|
|
struct vm_area_struct *vma)
|
|
|
|
{
|
|
|
|
fb_deferred_io_mmap(info, vma);
|
|
|
|
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int drm_fbdev_cma_defio_init(struct fb_info *fbi,
|
|
|
|
struct drm_gem_cma_object *cma_obj)
|
|
|
|
{
|
|
|
|
struct fb_deferred_io *fbdefio;
|
|
|
|
struct fb_ops *fbops;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Per device structures are needed because:
|
|
|
|
* fbops: fb_deferred_io_cleanup() clears fbops.fb_mmap
|
|
|
|
* fbdefio: individual delays
|
|
|
|
*/
|
|
|
|
fbdefio = kzalloc(sizeof(*fbdefio), GFP_KERNEL);
|
|
|
|
fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
|
|
|
|
if (!fbdefio || !fbops) {
|
|
|
|
kfree(fbdefio);
|
2016-06-12 09:03:56 -06:00
|
|
|
kfree(fbops);
|
2016-04-28 09:18:35 -06:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* can't be offset from vaddr since dirty() uses cma_obj */
|
|
|
|
fbi->screen_buffer = cma_obj->vaddr;
|
|
|
|
/* fb_deferred_io_fault() needs a physical address */
|
|
|
|
fbi->fix.smem_start = page_to_phys(virt_to_page(fbi->screen_buffer));
|
|
|
|
|
|
|
|
*fbops = *fbi->fbops;
|
|
|
|
fbi->fbops = fbops;
|
|
|
|
|
|
|
|
fbdefio->delay = msecs_to_jiffies(DEFAULT_FBDEFIO_DELAY_MS);
|
|
|
|
fbdefio->deferred_io = drm_fb_helper_deferred_io;
|
|
|
|
fbi->fbdefio = fbdefio;
|
|
|
|
fb_deferred_io_init(fbi);
|
|
|
|
fbi->fbops->fb_mmap = drm_fbdev_cma_deferred_io_mmap;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void drm_fbdev_cma_defio_fini(struct fb_info *fbi)
|
|
|
|
{
|
|
|
|
if (!fbi->fbdefio)
|
|
|
|
return;
|
|
|
|
|
|
|
|
fb_deferred_io_cleanup(fbi);
|
|
|
|
kfree(fbi->fbdefio);
|
|
|
|
kfree(fbi->fbops);
|
|
|
|
}
|
|
|
|
|
2016-12-29 13:48:31 -07:00
|
|
|
static int
|
|
|
|
drm_fbdev_cma_create(struct drm_fb_helper *helper,
|
|
|
|
struct drm_fb_helper_surface_size *sizes)
|
2012-07-02 08:37:47 -06:00
|
|
|
{
|
|
|
|
struct drm_fbdev_cma *fbdev_cma = to_fbdev_cma(helper);
|
|
|
|
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
|
|
|
|
struct drm_device *dev = helper->dev;
|
|
|
|
struct drm_gem_cma_object *obj;
|
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
unsigned int bytes_per_pixel;
|
|
|
|
unsigned long offset;
|
|
|
|
struct fb_info *fbi;
|
|
|
|
size_t size;
|
|
|
|
int ret;
|
|
|
|
|
2012-10-20 04:32:46 -06:00
|
|
|
DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d)\n",
|
2012-07-02 08:37:47 -06:00
|
|
|
sizes->surface_width, sizes->surface_height,
|
|
|
|
sizes->surface_bpp);
|
|
|
|
|
|
|
|
bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
|
|
|
|
|
|
|
|
mode_cmd.width = sizes->surface_width;
|
|
|
|
mode_cmd.height = sizes->surface_height;
|
|
|
|
mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
|
|
|
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
|
|
|
|
sizes->surface_depth);
|
|
|
|
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
|
|
obj = drm_gem_cma_create(dev, size);
|
2012-10-20 04:32:47 -06:00
|
|
|
if (IS_ERR(obj))
|
2012-07-02 08:37:47 -06:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2015-07-22 03:28:20 -06:00
|
|
|
fbi = drm_fb_helper_alloc_fbi(helper);
|
|
|
|
if (IS_ERR(fbi)) {
|
|
|
|
ret = PTR_ERR(fbi);
|
2015-12-14 17:26:26 -07:00
|
|
|
goto err_gem_free_object;
|
2012-07-02 08:37:47 -06:00
|
|
|
}
|
|
|
|
|
2016-12-29 13:48:31 -07:00
|
|
|
fbdev_cma->fb = drm_fb_cma_alloc(dev, &mode_cmd, &obj, 1,
|
|
|
|
fbdev_cma->fb_funcs);
|
2012-07-02 08:37:47 -06:00
|
|
|
if (IS_ERR(fbdev_cma->fb)) {
|
|
|
|
dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
|
|
|
|
ret = PTR_ERR(fbdev_cma->fb);
|
2015-07-22 03:28:20 -06:00
|
|
|
goto err_fb_info_destroy;
|
2012-07-02 08:37:47 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
fb = &fbdev_cma->fb->fb;
|
|
|
|
helper->fb = fb;
|
|
|
|
|
|
|
|
fbi->par = helper;
|
|
|
|
fbi->flags = FBINFO_FLAG_DEFAULT;
|
|
|
|
fbi->fbops = &drm_fbdev_cma_ops;
|
|
|
|
|
2016-12-14 14:31:35 -07:00
|
|
|
drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->format->depth);
|
2015-03-11 08:23:10 -06:00
|
|
|
drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
|
2012-07-02 08:37:47 -06:00
|
|
|
|
|
|
|
offset = fbi->var.xoffset * bytes_per_pixel;
|
|
|
|
offset += fbi->var.yoffset * fb->pitches[0];
|
|
|
|
|
|
|
|
dev->mode_config.fb_base = (resource_size_t)obj->paddr;
|
|
|
|
fbi->screen_base = obj->vaddr + offset;
|
|
|
|
fbi->fix.smem_start = (unsigned long)(obj->paddr + offset);
|
|
|
|
fbi->screen_size = size;
|
|
|
|
fbi->fix.smem_len = size;
|
|
|
|
|
2016-12-29 13:48:31 -07:00
|
|
|
if (fbdev_cma->fb_funcs->dirty) {
|
2016-04-28 09:18:35 -06:00
|
|
|
ret = drm_fbdev_cma_defio_init(fbi, obj);
|
|
|
|
if (ret)
|
|
|
|
goto err_cma_destroy;
|
|
|
|
}
|
|
|
|
|
2012-07-02 08:37:47 -06:00
|
|
|
return 0;
|
|
|
|
|
2016-04-28 09:18:35 -06:00
|
|
|
err_cma_destroy:
|
2016-12-27 03:49:22 -07:00
|
|
|
drm_framebuffer_remove(&fbdev_cma->fb->fb);
|
2015-07-22 03:28:20 -06:00
|
|
|
err_fb_info_destroy:
|
2017-02-07 09:16:03 -07:00
|
|
|
drm_fb_helper_fini(helper);
|
2015-12-14 17:26:26 -07:00
|
|
|
err_gem_free_object:
|
2017-02-28 07:46:41 -07:00
|
|
|
drm_gem_object_put_unlocked(&obj->base);
|
2012-07-02 08:37:47 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2014-06-27 09:19:23 -06:00
|
|
|
static const struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = {
|
2013-01-21 15:42:49 -07:00
|
|
|
.fb_probe = drm_fbdev_cma_create,
|
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);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
2016-12-27 03:49:22 -07:00
|
|
|
if (fbdev_cma->fb)
|
|
|
|
drm_framebuffer_remove(&fbdev_cma->fb->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.
|
|
|
|
*/
|
|
|
|
void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
|
|
|
|
{
|
|
|
|
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,
|
|
|
|
int state)
|
|
|
|
{
|
|
|
|
if (fbdev_cma)
|
|
|
|
drm_fb_helper_set_suspend_unlocked(&fbdev_cma->fb_helper,
|
|
|
|
state);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_fbdev_cma_set_suspend_unlocked);
|