mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-31 08:08:51 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
338
drivers/gpu/drm/cirrus/cirrus_fbdev.c
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338
drivers/gpu/drm/cirrus/cirrus_fbdev.c
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/*
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* Copyright 2012 Red Hat
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License version 2. See the file COPYING in the main
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* directory of this archive for more details.
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*
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* Authors: Matthew Garrett
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* Dave Airlie
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*/
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#include <linux/module.h>
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#include <drm/drmP.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 <linux/fb.h>
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#include "cirrus_drv.h"
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static void cirrus_dirty_update(struct cirrus_fbdev *afbdev,
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int x, int y, int width, int height)
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{
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int i;
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struct drm_gem_object *obj;
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struct cirrus_bo *bo;
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int src_offset, dst_offset;
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int bpp = (afbdev->gfb.base.bits_per_pixel + 7)/8;
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int ret = -EBUSY;
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bool unmap = false;
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bool store_for_later = false;
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int x2, y2;
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unsigned long flags;
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obj = afbdev->gfb.obj;
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bo = gem_to_cirrus_bo(obj);
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/*
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* try and reserve the BO, if we fail with busy
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* then the BO is being moved and we should
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* store up the damage until later.
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*/
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if (drm_can_sleep())
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ret = cirrus_bo_reserve(bo, true);
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if (ret) {
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if (ret != -EBUSY)
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return;
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store_for_later = true;
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}
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x2 = x + width - 1;
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y2 = y + height - 1;
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spin_lock_irqsave(&afbdev->dirty_lock, flags);
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if (afbdev->y1 < y)
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y = afbdev->y1;
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if (afbdev->y2 > y2)
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y2 = afbdev->y2;
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if (afbdev->x1 < x)
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x = afbdev->x1;
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if (afbdev->x2 > x2)
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x2 = afbdev->x2;
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if (store_for_later) {
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afbdev->x1 = x;
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afbdev->x2 = x2;
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afbdev->y1 = y;
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afbdev->y2 = y2;
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spin_unlock_irqrestore(&afbdev->dirty_lock, flags);
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return;
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}
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afbdev->x1 = afbdev->y1 = INT_MAX;
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afbdev->x2 = afbdev->y2 = 0;
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spin_unlock_irqrestore(&afbdev->dirty_lock, flags);
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if (!bo->kmap.virtual) {
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ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
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if (ret) {
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DRM_ERROR("failed to kmap fb updates\n");
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cirrus_bo_unreserve(bo);
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return;
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}
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unmap = true;
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}
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for (i = y; i < y + height; i++) {
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/* assume equal stride for now */
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src_offset = dst_offset = i * afbdev->gfb.base.pitches[0] + (x * bpp);
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memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp);
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}
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if (unmap)
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ttm_bo_kunmap(&bo->kmap);
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cirrus_bo_unreserve(bo);
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}
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static void cirrus_fillrect(struct fb_info *info,
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const struct fb_fillrect *rect)
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{
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struct cirrus_fbdev *afbdev = info->par;
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sys_fillrect(info, rect);
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cirrus_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
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rect->height);
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}
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static void cirrus_copyarea(struct fb_info *info,
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const struct fb_copyarea *area)
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{
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struct cirrus_fbdev *afbdev = info->par;
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sys_copyarea(info, area);
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cirrus_dirty_update(afbdev, area->dx, area->dy, area->width,
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area->height);
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}
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static void cirrus_imageblit(struct fb_info *info,
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const struct fb_image *image)
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{
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struct cirrus_fbdev *afbdev = info->par;
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sys_imageblit(info, image);
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cirrus_dirty_update(afbdev, image->dx, image->dy, image->width,
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image->height);
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}
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static struct fb_ops cirrusfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_fillrect = cirrus_fillrect,
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.fb_copyarea = cirrus_copyarea,
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.fb_imageblit = cirrus_imageblit,
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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcmap = drm_fb_helper_setcmap,
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};
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static int cirrusfb_create_object(struct cirrus_fbdev *afbdev,
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struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object **gobj_p)
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{
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struct drm_device *dev = afbdev->helper.dev;
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u32 bpp, depth;
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u32 size;
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struct drm_gem_object *gobj;
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int ret = 0;
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drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
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if (bpp > 24)
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return -EINVAL;
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size = mode_cmd->pitches[0] * mode_cmd->height;
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ret = cirrus_gem_create(dev, size, true, &gobj);
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if (ret)
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return ret;
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*gobj_p = gobj;
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return ret;
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}
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static int cirrusfb_create(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct cirrus_fbdev *gfbdev =
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container_of(helper, struct cirrus_fbdev, helper);
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struct drm_device *dev = gfbdev->helper.dev;
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struct cirrus_device *cdev = gfbdev->helper.dev->dev_private;
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struct fb_info *info;
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struct drm_framebuffer *fb;
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struct drm_mode_fb_cmd2 mode_cmd;
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struct device *device = &dev->pdev->dev;
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void *sysram;
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struct drm_gem_object *gobj = NULL;
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struct cirrus_bo *bo = NULL;
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int size, ret;
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = mode_cmd.pitches[0] * mode_cmd.height;
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ret = cirrusfb_create_object(gfbdev, &mode_cmd, &gobj);
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if (ret) {
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DRM_ERROR("failed to create fbcon backing object %d\n", ret);
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return ret;
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}
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bo = gem_to_cirrus_bo(gobj);
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sysram = vmalloc(size);
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if (!sysram)
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return -ENOMEM;
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info = framebuffer_alloc(0, device);
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if (info == NULL)
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return -ENOMEM;
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info->par = gfbdev;
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ret = cirrus_framebuffer_init(cdev->dev, &gfbdev->gfb, &mode_cmd, gobj);
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if (ret)
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return ret;
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gfbdev->sysram = sysram;
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gfbdev->size = size;
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fb = &gfbdev->gfb.base;
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if (!fb) {
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DRM_INFO("fb is NULL\n");
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return -EINVAL;
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}
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/* setup helper */
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gfbdev->helper.fb = fb;
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gfbdev->helper.fbdev = info;
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strcpy(info->fix.id, "cirrusdrmfb");
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info->flags = FBINFO_DEFAULT;
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info->fbops = &cirrusfb_ops;
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drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
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drm_fb_helper_fill_var(info, &gfbdev->helper, sizes->fb_width,
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sizes->fb_height);
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/* setup aperture base/size for vesafb takeover */
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info->apertures = alloc_apertures(1);
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if (!info->apertures) {
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ret = -ENOMEM;
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goto out_iounmap;
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}
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info->apertures->ranges[0].base = cdev->dev->mode_config.fb_base;
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info->apertures->ranges[0].size = cdev->mc.vram_size;
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info->fix.smem_start = cdev->dev->mode_config.fb_base;
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info->fix.smem_len = cdev->mc.vram_size;
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info->screen_base = sysram;
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info->screen_size = size;
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info->fix.mmio_start = 0;
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info->fix.mmio_len = 0;
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ret = fb_alloc_cmap(&info->cmap, 256, 0);
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if (ret) {
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DRM_ERROR("%s: can't allocate color map\n", info->fix.id);
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ret = -ENOMEM;
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goto out_iounmap;
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}
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DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
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DRM_INFO("vram aper at 0x%lX\n", (unsigned long)info->fix.smem_start);
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DRM_INFO("size %lu\n", (unsigned long)info->fix.smem_len);
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DRM_INFO("fb depth is %d\n", fb->depth);
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DRM_INFO(" pitch is %d\n", fb->pitches[0]);
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return 0;
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out_iounmap:
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return ret;
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}
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static int cirrus_fbdev_destroy(struct drm_device *dev,
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struct cirrus_fbdev *gfbdev)
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{
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struct fb_info *info;
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struct cirrus_framebuffer *gfb = &gfbdev->gfb;
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if (gfbdev->helper.fbdev) {
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info = gfbdev->helper.fbdev;
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unregister_framebuffer(info);
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if (info->cmap.len)
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fb_dealloc_cmap(&info->cmap);
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framebuffer_release(info);
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}
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if (gfb->obj) {
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drm_gem_object_unreference_unlocked(gfb->obj);
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gfb->obj = NULL;
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}
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vfree(gfbdev->sysram);
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drm_fb_helper_fini(&gfbdev->helper);
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drm_framebuffer_unregister_private(&gfb->base);
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drm_framebuffer_cleanup(&gfb->base);
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return 0;
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}
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static const struct drm_fb_helper_funcs cirrus_fb_helper_funcs = {
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.gamma_set = cirrus_crtc_fb_gamma_set,
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.gamma_get = cirrus_crtc_fb_gamma_get,
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.fb_probe = cirrusfb_create,
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};
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int cirrus_fbdev_init(struct cirrus_device *cdev)
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{
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struct cirrus_fbdev *gfbdev;
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int ret;
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int bpp_sel = 24;
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/*bpp_sel = 8;*/
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gfbdev = kzalloc(sizeof(struct cirrus_fbdev), GFP_KERNEL);
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if (!gfbdev)
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return -ENOMEM;
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cdev->mode_info.gfbdev = gfbdev;
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spin_lock_init(&gfbdev->dirty_lock);
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drm_fb_helper_prepare(cdev->dev, &gfbdev->helper,
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&cirrus_fb_helper_funcs);
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ret = drm_fb_helper_init(cdev->dev, &gfbdev->helper,
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cdev->num_crtc, CIRRUSFB_CONN_LIMIT);
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if (ret) {
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kfree(gfbdev);
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return ret;
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}
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drm_fb_helper_single_add_all_connectors(&gfbdev->helper);
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/* disable all the possible outputs/crtcs before entering KMS mode */
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drm_helper_disable_unused_functions(cdev->dev);
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drm_fb_helper_initial_config(&gfbdev->helper, bpp_sel);
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return 0;
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}
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void cirrus_fbdev_fini(struct cirrus_device *cdev)
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{
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if (!cdev->mode_info.gfbdev)
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return;
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cirrus_fbdev_destroy(cdev->dev, cdev->mode_info.gfbdev);
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kfree(cdev->mode_info.gfbdev);
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cdev->mode_info.gfbdev = NULL;
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}
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