| /************************************************************************** |
| * Copyright (c) 2007-2011, Intel Corporation. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| **************************************************************************/ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/fb.h> |
| #include <linux/init.h> |
| #include <linux/console.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_fb_helper.h> |
| |
| #include "psb_drv.h" |
| #include "psb_intel_reg.h" |
| #include "psb_intel_drv.h" |
| #include "framebuffer.h" |
| #include "gtt.h" |
| |
| static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb); |
| static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, |
| struct drm_file *file_priv, |
| unsigned int *handle); |
| |
| static const struct drm_framebuffer_funcs psb_fb_funcs = { |
| .destroy = psb_user_framebuffer_destroy, |
| .create_handle = psb_user_framebuffer_create_handle, |
| }; |
| |
| #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16) |
| |
| static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| unsigned blue, unsigned transp, |
| struct fb_info *info) |
| { |
| struct psb_fbdev *fbdev = info->par; |
| struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb; |
| uint32_t v; |
| |
| if (!fb) |
| return -ENOMEM; |
| |
| if (regno > 255) |
| return 1; |
| |
| red = CMAP_TOHW(red, info->var.red.length); |
| blue = CMAP_TOHW(blue, info->var.blue.length); |
| green = CMAP_TOHW(green, info->var.green.length); |
| transp = CMAP_TOHW(transp, info->var.transp.length); |
| |
| v = (red << info->var.red.offset) | |
| (green << info->var.green.offset) | |
| (blue << info->var.blue.offset) | |
| (transp << info->var.transp.offset); |
| |
| if (regno < 16) { |
| switch (fb->bits_per_pixel) { |
| case 16: |
| ((uint32_t *) info->pseudo_palette)[regno] = v; |
| break; |
| case 24: |
| case 32: |
| ((uint32_t *) info->pseudo_palette)[regno] = v; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| struct psb_fbdev *fbdev = info->par; |
| struct psb_framebuffer *psbfb = &fbdev->pfb; |
| struct drm_device *dev = psbfb->base.dev; |
| |
| /* |
| * We have to poke our nose in here. The core fb code assumes |
| * panning is part of the hardware that can be invoked before |
| * the actual fb is mapped. In our case that isn't quite true. |
| */ |
| if (psbfb->gtt->npage) { |
| /* GTT roll shifts in 4K pages, we need to shift the right |
| number of pages */ |
| int pages = info->fix.line_length >> 12; |
| psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages); |
| } |
| return 0; |
| } |
| |
| void psbfb_suspend(struct drm_device *dev) |
| { |
| struct drm_framebuffer *fb = 0; |
| struct psb_framebuffer *psbfb = to_psb_fb(fb); |
| |
| console_lock(); |
| mutex_lock(&dev->mode_config.mutex); |
| list_for_each_entry(fb, &dev->mode_config.fb_list, head) { |
| struct fb_info *info = psbfb->fbdev; |
| fb_set_suspend(info, 1); |
| drm_fb_helper_blank(FB_BLANK_POWERDOWN, info); |
| } |
| mutex_unlock(&dev->mode_config.mutex); |
| console_unlock(); |
| } |
| |
| void psbfb_resume(struct drm_device *dev) |
| { |
| struct drm_framebuffer *fb = 0; |
| struct psb_framebuffer *psbfb = to_psb_fb(fb); |
| |
| console_lock(); |
| mutex_lock(&dev->mode_config.mutex); |
| list_for_each_entry(fb, &dev->mode_config.fb_list, head) { |
| struct fb_info *info = psbfb->fbdev; |
| fb_set_suspend(info, 0); |
| drm_fb_helper_blank(FB_BLANK_UNBLANK, info); |
| } |
| mutex_unlock(&dev->mode_config.mutex); |
| console_unlock(); |
| drm_helper_disable_unused_functions(dev); |
| } |
| |
| static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| { |
| struct psb_framebuffer *psbfb = vma->vm_private_data; |
| struct drm_device *dev = psbfb->base.dev; |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| int page_num; |
| int i; |
| unsigned long address; |
| int ret; |
| unsigned long pfn; |
| /* FIXME: assumes fb at stolen base which may not be true */ |
| unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; |
| |
| page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; |
| address = (unsigned long)vmf->virtual_address; |
| |
| vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
| |
| for (i = 0; i < page_num; i++) { |
| pfn = (phys_addr >> PAGE_SHIFT); |
| |
| ret = vm_insert_mixed(vma, address, pfn); |
| if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) |
| break; |
| else if (unlikely(ret != 0)) { |
| ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; |
| return ret; |
| } |
| address += PAGE_SIZE; |
| phys_addr += PAGE_SIZE; |
| } |
| return VM_FAULT_NOPAGE; |
| } |
| |
| static void psbfb_vm_open(struct vm_area_struct *vma) |
| { |
| } |
| |
| static void psbfb_vm_close(struct vm_area_struct *vma) |
| { |
| } |
| |
| static struct vm_operations_struct psbfb_vm_ops = { |
| .fault = psbfb_vm_fault, |
| .open = psbfb_vm_open, |
| .close = psbfb_vm_close |
| }; |
| |
| static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) |
| { |
| struct psb_fbdev *fbdev = info->par; |
| struct psb_framebuffer *psbfb = &fbdev->pfb; |
| |
| if (vma->vm_pgoff != 0) |
| return -EINVAL; |
| if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) |
| return -EINVAL; |
| |
| if (!psbfb->addr_space) |
| psbfb->addr_space = vma->vm_file->f_mapping; |
| /* |
| * If this is a GEM object then info->screen_base is the virtual |
| * kernel remapping of the object. FIXME: Review if this is |
| * suitable for our mmap work |
| */ |
| vma->vm_ops = &psbfb_vm_ops; |
| vma->vm_private_data = (void *)psbfb; |
| vma->vm_flags |= VM_RESERVED | VM_IO | |
| VM_MIXEDMAP | VM_DONTEXPAND; |
| return 0; |
| } |
| |
| static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, |
| unsigned long arg) |
| { |
| return -ENOTTY; |
| } |
| |
| static struct fb_ops psbfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| .fb_blank = drm_fb_helper_blank, |
| .fb_setcolreg = psbfb_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = psbfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_mmap = psbfb_mmap, |
| .fb_sync = psbfb_sync, |
| .fb_ioctl = psbfb_ioctl, |
| }; |
| |
| static struct fb_ops psbfb_roll_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| .fb_blank = drm_fb_helper_blank, |
| .fb_setcolreg = psbfb_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_pan_display = psbfb_pan, |
| .fb_mmap = psbfb_mmap, |
| .fb_sync = psbfb_sync, |
| .fb_ioctl = psbfb_ioctl, |
| }; |
| |
| static struct fb_ops psbfb_unaccel_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| .fb_blank = drm_fb_helper_blank, |
| .fb_setcolreg = psbfb_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_mmap = psbfb_mmap, |
| .fb_ioctl = psbfb_ioctl, |
| }; |
| |
| /** |
| * psb_framebuffer_init - initialize a framebuffer |
| * @dev: our DRM device |
| * @fb: framebuffer to set up |
| * @mode_cmd: mode description |
| * @gt: backing object |
| * |
| * Configure and fill in the boilerplate for our frame buffer. Return |
| * 0 on success or an error code if we fail. |
| */ |
| static int psb_framebuffer_init(struct drm_device *dev, |
| struct psb_framebuffer *fb, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct gtt_range *gt) |
| { |
| u32 bpp, depth; |
| int ret; |
| |
| drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); |
| |
| if (mode_cmd->pitches[0] & 63) |
| return -EINVAL; |
| switch (bpp) { |
| case 8: |
| case 16: |
| case 24: |
| case 32: |
| break; |
| default: |
| return -EINVAL; |
| } |
| ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); |
| if (ret) { |
| dev_err(dev->dev, "framebuffer init failed: %d\n", ret); |
| return ret; |
| } |
| drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); |
| fb->gtt = gt; |
| return 0; |
| } |
| |
| /** |
| * psb_framebuffer_create - create a framebuffer backed by gt |
| * @dev: our DRM device |
| * @mode_cmd: the description of the requested mode |
| * @gt: the backing object |
| * |
| * Create a framebuffer object backed by the gt, and fill in the |
| * boilerplate required |
| * |
| * TODO: review object references |
| */ |
| |
| static struct drm_framebuffer *psb_framebuffer_create |
| (struct drm_device *dev, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct gtt_range *gt) |
| { |
| struct psb_framebuffer *fb; |
| int ret; |
| |
| fb = kzalloc(sizeof(*fb), GFP_KERNEL); |
| if (!fb) |
| return ERR_PTR(-ENOMEM); |
| |
| ret = psb_framebuffer_init(dev, fb, mode_cmd, gt); |
| if (ret) { |
| kfree(fb); |
| return ERR_PTR(ret); |
| } |
| return &fb->base; |
| } |
| |
| /** |
| * psbfb_alloc - allocate frame buffer memory |
| * @dev: the DRM device |
| * @aligned_size: space needed |
| * @force: fall back to GEM buffers if need be |
| * |
| * Allocate the frame buffer. In the usual case we get a GTT range that |
| * is stolen memory backed and life is simple. If there isn't sufficient |
| * we fail as we don't have the virtual mapping space to really vmap it |
| * and the kernel console code can't handle non linear framebuffers. |
| * |
| * Re-address this as and if the framebuffer layer grows this ability. |
| */ |
| static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) |
| { |
| struct gtt_range *backing; |
| /* Begin by trying to use stolen memory backing */ |
| backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1); |
| if (backing) { |
| if (drm_gem_private_object_init(dev, |
| &backing->gem, aligned_size) == 0) |
| return backing; |
| psb_gtt_free_range(dev, backing); |
| } |
| return NULL; |
| } |
| |
| /** |
| * psbfb_create - create a framebuffer |
| * @fbdev: the framebuffer device |
| * @sizes: specification of the layout |
| * |
| * Create a framebuffer to the specifications provided |
| */ |
| static int psbfb_create(struct psb_fbdev *fbdev, |
| struct drm_fb_helper_surface_size *sizes) |
| { |
| struct drm_device *dev = fbdev->psb_fb_helper.dev; |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct fb_info *info; |
| struct drm_framebuffer *fb; |
| struct psb_framebuffer *psbfb = &fbdev->pfb; |
| struct drm_mode_fb_cmd2 mode_cmd; |
| struct device *device = &dev->pdev->dev; |
| int size; |
| int ret; |
| struct gtt_range *backing; |
| u32 bpp, depth; |
| int gtt_roll = 0; |
| int pitch_lines = 0; |
| |
| mode_cmd.width = sizes->surface_width; |
| mode_cmd.height = sizes->surface_height; |
| bpp = sizes->surface_bpp; |
| |
| /* No 24bit packed */ |
| if (bpp == 24) |
| bpp = 32; |
| |
| do { |
| /* |
| * Acceleration via the GTT requires pitch to be |
| * power of two aligned. Preferably page but less |
| * is ok with some fonts |
| */ |
| mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); |
| depth = sizes->surface_depth; |
| |
| size = mode_cmd.pitches[0] * mode_cmd.height; |
| size = ALIGN(size, PAGE_SIZE); |
| |
| /* Allocate the fb in the GTT with stolen page backing */ |
| backing = psbfb_alloc(dev, size); |
| |
| if (pitch_lines) |
| pitch_lines *= 2; |
| else |
| pitch_lines = 1; |
| gtt_roll++; |
| } while (backing == NULL && pitch_lines <= 16); |
| |
| /* The final pitch we accepted if we succeeded */ |
| pitch_lines /= 2; |
| |
| if (backing == NULL) { |
| /* |
| * We couldn't get the space we wanted, fall back to the |
| * display engine requirement instead. The HW requires |
| * the pitch to be 64 byte aligned |
| */ |
| |
| gtt_roll = 0; /* Don't use GTT accelerated scrolling */ |
| pitch_lines = 64; |
| |
| mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); |
| |
| size = mode_cmd.pitches[0] * mode_cmd.height; |
| size = ALIGN(size, PAGE_SIZE); |
| |
| /* Allocate the framebuffer in the GTT with stolen page backing */ |
| backing = psbfb_alloc(dev, size); |
| if (backing == NULL) |
| return -ENOMEM; |
| } |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| info = framebuffer_alloc(0, device); |
| if (!info) { |
| ret = -ENOMEM; |
| goto out_err1; |
| } |
| info->par = fbdev; |
| |
| mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); |
| |
| ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); |
| if (ret) |
| goto out_unref; |
| |
| fb = &psbfb->base; |
| psbfb->fbdev = info; |
| |
| fbdev->psb_fb_helper.fb = fb; |
| fbdev->psb_fb_helper.fbdev = info; |
| |
| strcpy(info->fix.id, "psbfb"); |
| |
| info->flags = FBINFO_DEFAULT; |
| if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ |
| info->fbops = &psbfb_ops; |
| else if (gtt_roll) { /* GTT rolling seems best */ |
| info->fbops = &psbfb_roll_ops; |
| info->flags |= FBINFO_HWACCEL_YPAN; |
| } else /* Software */ |
| info->fbops = &psbfb_unaccel_ops; |
| |
| ret = fb_alloc_cmap(&info->cmap, 256, 0); |
| if (ret) { |
| ret = -ENOMEM; |
| goto out_unref; |
| } |
| |
| info->fix.smem_start = dev->mode_config.fb_base; |
| info->fix.smem_len = size; |
| info->fix.ywrapstep = gtt_roll; |
| info->fix.ypanstep = 0; |
| |
| /* Accessed stolen memory directly */ |
| info->screen_base = (char *)dev_priv->vram_addr + |
| backing->offset; |
| info->screen_size = size; |
| |
| if (dev_priv->gtt.stolen_size) { |
| info->apertures = alloc_apertures(1); |
| if (!info->apertures) { |
| ret = -ENOMEM; |
| goto out_unref; |
| } |
| info->apertures->ranges[0].base = dev->mode_config.fb_base; |
| info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; |
| } |
| |
| drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, |
| sizes->fb_width, sizes->fb_height); |
| |
| info->fix.mmio_start = pci_resource_start(dev->pdev, 0); |
| info->fix.mmio_len = pci_resource_len(dev->pdev, 0); |
| |
| info->pixmap.size = 64 * 1024; |
| info->pixmap.buf_align = 8; |
| info->pixmap.access_align = 32; |
| info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| info->pixmap.scan_align = 1; |
| |
| dev_info(dev->dev, "allocated %dx%d fb\n", |
| psbfb->base.width, psbfb->base.height); |
| |
| mutex_unlock(&dev->struct_mutex); |
| return 0; |
| out_unref: |
| if (backing->stolen) |
| psb_gtt_free_range(dev, backing); |
| else |
| drm_gem_object_unreference(&backing->gem); |
| out_err1: |
| mutex_unlock(&dev->struct_mutex); |
| psb_gtt_free_range(dev, backing); |
| return ret; |
| } |
| |
| /** |
| * psb_user_framebuffer_create - create framebuffer |
| * @dev: our DRM device |
| * @filp: client file |
| * @cmd: mode request |
| * |
| * Create a new framebuffer backed by a userspace GEM object |
| */ |
| static struct drm_framebuffer *psb_user_framebuffer_create |
| (struct drm_device *dev, struct drm_file *filp, |
| struct drm_mode_fb_cmd2 *cmd) |
| { |
| struct gtt_range *r; |
| struct drm_gem_object *obj; |
| |
| /* |
| * Find the GEM object and thus the gtt range object that is |
| * to back this space |
| */ |
| obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); |
| if (obj == NULL) |
| return ERR_PTR(-ENOENT); |
| |
| /* Let the core code do all the work */ |
| r = container_of(obj, struct gtt_range, gem); |
| return psb_framebuffer_create(dev, cmd, r); |
| } |
| |
| static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
| u16 blue, int regno) |
| { |
| } |
| |
| static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, |
| u16 *green, u16 *blue, int regno) |
| { |
| } |
| |
| static int psbfb_probe(struct drm_fb_helper *helper, |
| struct drm_fb_helper_surface_size *sizes) |
| { |
| struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper; |
| int new_fb = 0; |
| int ret; |
| |
| if (!helper->fb) { |
| ret = psbfb_create(psb_fbdev, sizes); |
| if (ret) |
| return ret; |
| new_fb = 1; |
| } |
| return new_fb; |
| } |
| |
| struct drm_fb_helper_funcs psb_fb_helper_funcs = { |
| .gamma_set = psbfb_gamma_set, |
| .gamma_get = psbfb_gamma_get, |
| .fb_probe = psbfb_probe, |
| }; |
| |
| int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) |
| { |
| struct fb_info *info; |
| struct psb_framebuffer *psbfb = &fbdev->pfb; |
| |
| if (fbdev->psb_fb_helper.fbdev) { |
| info = fbdev->psb_fb_helper.fbdev; |
| unregister_framebuffer(info); |
| if (info->cmap.len) |
| fb_dealloc_cmap(&info->cmap); |
| framebuffer_release(info); |
| } |
| drm_fb_helper_fini(&fbdev->psb_fb_helper); |
| drm_framebuffer_cleanup(&psbfb->base); |
| |
| if (psbfb->gtt) |
| drm_gem_object_unreference(&psbfb->gtt->gem); |
| return 0; |
| } |
| |
| int psb_fbdev_init(struct drm_device *dev) |
| { |
| struct psb_fbdev *fbdev; |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| |
| fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); |
| if (!fbdev) { |
| dev_err(dev->dev, "no memory\n"); |
| return -ENOMEM; |
| } |
| |
| dev_priv->fbdev = fbdev; |
| fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; |
| |
| drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, |
| INTELFB_CONN_LIMIT); |
| |
| drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); |
| drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); |
| return 0; |
| } |
| |
| void psb_fbdev_fini(struct drm_device *dev) |
| { |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| |
| if (!dev_priv->fbdev) |
| return; |
| |
| psb_fbdev_destroy(dev, dev_priv->fbdev); |
| kfree(dev_priv->fbdev); |
| dev_priv->fbdev = NULL; |
| } |
| |
| static void psbfb_output_poll_changed(struct drm_device *dev) |
| { |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; |
| drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); |
| } |
| |
| /** |
| * psb_user_framebuffer_create_handle - add hamdle to a framebuffer |
| * @fb: framebuffer |
| * @file_priv: our DRM file |
| * @handle: returned handle |
| * |
| * Our framebuffer object is a GTT range which also contains a GEM |
| * object. We need to turn it into a handle for userspace. GEM will do |
| * the work for us |
| */ |
| static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, |
| struct drm_file *file_priv, |
| unsigned int *handle) |
| { |
| struct psb_framebuffer *psbfb = to_psb_fb(fb); |
| struct gtt_range *r = psbfb->gtt; |
| return drm_gem_handle_create(file_priv, &r->gem, handle); |
| } |
| |
| /** |
| * psb_user_framebuffer_destroy - destruct user created fb |
| * @fb: framebuffer |
| * |
| * User framebuffers are backed by GEM objects so all we have to do is |
| * clean up a bit and drop the reference, GEM will handle the fallout |
| */ |
| static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) |
| { |
| struct psb_framebuffer *psbfb = to_psb_fb(fb); |
| struct gtt_range *r = psbfb->gtt; |
| struct drm_device *dev = fb->dev; |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct psb_fbdev *fbdev = dev_priv->fbdev; |
| struct drm_crtc *crtc; |
| int reset = 0; |
| |
| /* Should never get stolen memory for a user fb */ |
| WARN_ON(r->stolen); |
| |
| /* Check if we are erroneously live */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
| if (crtc->fb == fb) |
| reset = 1; |
| |
| if (reset) |
| /* |
| * Now force a sane response before we permit the DRM CRTC |
| * layer to do stupid things like blank the display. Instead |
| * we reset this framebuffer as if the user had forced a reset. |
| * We must do this before the cleanup so that the DRM layer |
| * doesn't get a chance to stick its oar in where it isn't |
| * wanted. |
| */ |
| drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper); |
| |
| /* Let DRM do its clean up */ |
| drm_framebuffer_cleanup(fb); |
| /* We are no longer using the resource in GEM */ |
| drm_gem_object_unreference_unlocked(&r->gem); |
| kfree(fb); |
| } |
| |
| static const struct drm_mode_config_funcs psb_mode_funcs = { |
| .fb_create = psb_user_framebuffer_create, |
| .output_poll_changed = psbfb_output_poll_changed, |
| }; |
| |
| static int psb_create_backlight_property(struct drm_device *dev) |
| { |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct drm_property *backlight; |
| |
| if (dev_priv->backlight_property) |
| return 0; |
| |
| backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE, |
| "backlight", 2); |
| backlight->values[0] = 0; |
| backlight->values[1] = 100; |
| |
| dev_priv->backlight_property = backlight; |
| |
| return 0; |
| } |
| |
| static void psb_setup_outputs(struct drm_device *dev) |
| { |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct drm_connector *connector; |
| |
| drm_mode_create_scaling_mode_property(dev); |
| psb_create_backlight_property(dev); |
| |
| dev_priv->ops->output_init(dev); |
| |
| list_for_each_entry(connector, &dev->mode_config.connector_list, |
| head) { |
| struct psb_intel_output *psb_intel_output = |
| to_psb_intel_output(connector); |
| struct drm_encoder *encoder = &psb_intel_output->enc; |
| int crtc_mask = 0, clone_mask = 0; |
| |
| /* valid crtcs */ |
| switch (psb_intel_output->type) { |
| case INTEL_OUTPUT_ANALOG: |
| crtc_mask = (1 << 0); |
| clone_mask = (1 << INTEL_OUTPUT_ANALOG); |
| break; |
| case INTEL_OUTPUT_SDVO: |
| crtc_mask = ((1 << 0) | (1 << 1)); |
| clone_mask = (1 << INTEL_OUTPUT_SDVO); |
| break; |
| case INTEL_OUTPUT_LVDS: |
| if (IS_MRST(dev)) |
| crtc_mask = (1 << 0); |
| else |
| crtc_mask = (1 << 1); |
| clone_mask = (1 << INTEL_OUTPUT_LVDS); |
| break; |
| case INTEL_OUTPUT_MIPI: |
| crtc_mask = (1 << 0); |
| clone_mask = (1 << INTEL_OUTPUT_MIPI); |
| break; |
| case INTEL_OUTPUT_MIPI2: |
| crtc_mask = (1 << 2); |
| clone_mask = (1 << INTEL_OUTPUT_MIPI2); |
| break; |
| case INTEL_OUTPUT_HDMI: |
| if (IS_MFLD(dev)) |
| crtc_mask = (1 << 1); |
| else |
| crtc_mask = (1 << 0); |
| clone_mask = (1 << INTEL_OUTPUT_HDMI); |
| break; |
| } |
| encoder->possible_crtcs = crtc_mask; |
| encoder->possible_clones = |
| psb_intel_connector_clones(dev, clone_mask); |
| } |
| } |
| |
| void psb_modeset_init(struct drm_device *dev) |
| { |
| struct drm_psb_private *dev_priv = dev->dev_private; |
| struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; |
| int i; |
| |
| drm_mode_config_init(dev); |
| |
| dev->mode_config.min_width = 0; |
| dev->mode_config.min_height = 0; |
| |
| dev->mode_config.funcs = (void *) &psb_mode_funcs; |
| |
| /* set memory base */ |
| /* Oaktrail and Poulsbo should use BAR 2*/ |
| pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) |
| &(dev->mode_config.fb_base)); |
| |
| /* num pipes is 2 for PSB but 1 for Mrst */ |
| for (i = 0; i < dev_priv->num_pipe; i++) |
| psb_intel_crtc_init(dev, i, mode_dev); |
| |
| dev->mode_config.max_width = 2048; |
| dev->mode_config.max_height = 2048; |
| |
| psb_setup_outputs(dev); |
| } |
| |
| void psb_modeset_cleanup(struct drm_device *dev) |
| { |
| mutex_lock(&dev->struct_mutex); |
| |
| drm_kms_helper_poll_fini(dev); |
| psb_fbdev_fini(dev); |
| drm_mode_config_cleanup(dev); |
| |
| mutex_unlock(&dev->struct_mutex); |
| } |