diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_fb.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fb.c | 927 |
1 files changed, 0 insertions, 927 deletions
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c deleted file mode 100644 index b7f0ebe9f81..00000000000 --- a/drivers/gpu/drm/i915/intel_fb.c +++ /dev/null @@ -1,927 +0,0 @@ -/* - * Copyright © 2007 David Airlie - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Authors: - * David Airlie - */ - -#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/sysrq.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/init.h> - -#include "drmP.h" -#include "drm.h" -#include "drm_crtc.h" -#include "intel_drv.h" -#include "i915_drm.h" -#include "i915_drv.h" - -struct intelfb_par { - struct drm_device *dev; - struct drm_display_mode *our_mode; - struct intel_framebuffer *intel_fb; - int crtc_count; - /* crtc currently bound to this */ - uint32_t crtc_ids[2]; -}; - -static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green, - unsigned blue, unsigned transp, - struct fb_info *info) -{ - struct intelfb_par *par = info->par; - struct drm_device *dev = par->dev; - struct drm_crtc *crtc; - int i; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - struct drm_mode_set *modeset = &intel_crtc->mode_set; - struct drm_framebuffer *fb = modeset->fb; - - for (i = 0; i < par->crtc_count; i++) - if (crtc->base.id == par->crtc_ids[i]) - break; - - if (i == par->crtc_count) - continue; - - - if (regno > 255) - return 1; - - if (fb->depth == 8) { - intel_crtc_fb_gamma_set(crtc, red, green, blue, regno); - return 0; - } - - if (regno < 16) { - switch (fb->depth) { - case 15: - fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | - ((green & 0xf800) >> 6) | - ((blue & 0xf800) >> 11); - break; - case 16: - fb->pseudo_palette[regno] = (red & 0xf800) | - ((green & 0xfc00) >> 5) | - ((blue & 0xf800) >> 11); - break; - case 24: - case 32: - fb->pseudo_palette[regno] = ((red & 0xff00) << 8) | - (green & 0xff00) | - ((blue & 0xff00) >> 8); - break; - } - } - } - return 0; -} - -static int intelfb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct intelfb_par *par = info->par; - struct intel_framebuffer *intel_fb = par->intel_fb; - struct drm_framebuffer *fb = &intel_fb->base; - int depth; - - if (var->pixclock == -1 || !var->pixclock) - return -EINVAL; - - /* Need to resize the fb object !!! */ - if (var->xres > fb->width || var->yres > fb->height) { - DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height); - DRM_ERROR("Need resizing code.\n"); - return -EINVAL; - } - - switch (var->bits_per_pixel) { - case 16: - depth = (var->green.length == 6) ? 16 : 15; - break; - case 32: - depth = (var->transp.length > 0) ? 32 : 24; - break; - default: - depth = var->bits_per_pixel; - break; - } - - switch (depth) { - case 8: - var->red.offset = 0; - var->green.offset = 0; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 15: - var->red.offset = 10; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 5; - var->blue.length = 5; - var->transp.length = 1; - var->transp.offset = 15; - break; - case 16: - var->red.offset = 11; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 6; - var->blue.length = 5; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 24: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 32: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 8; - var->transp.offset = 24; - break; - default: - return -EINVAL; - } - - return 0; -} - -/* this will let fbcon do the mode init */ -/* FIXME: take mode config lock? */ -static int intelfb_set_par(struct fb_info *info) -{ - struct intelfb_par *par = info->par; - struct drm_device *dev = par->dev; - struct fb_var_screeninfo *var = &info->var; - int i; - - DRM_DEBUG("%d %d\n", var->xres, var->pixclock); - - if (var->pixclock != -1) { - - DRM_ERROR("PIXEL CLCOK SET\n"); - return -EINVAL; - } else { - struct drm_crtc *crtc; - int ret; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - - for (i = 0; i < par->crtc_count; i++) - if (crtc->base.id == par->crtc_ids[i]) - break; - - if (i == par->crtc_count) - continue; - - if (crtc->fb == intel_crtc->mode_set.fb) { - mutex_lock(&dev->mode_config.mutex); - ret = crtc->funcs->set_config(&intel_crtc->mode_set); - mutex_unlock(&dev->mode_config.mutex); - if (ret) - return ret; - } - } - return 0; - } -} - -static int intelfb_pan_display(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct intelfb_par *par = info->par; - struct drm_device *dev = par->dev; - struct drm_mode_set *modeset; - struct drm_crtc *crtc; - struct intel_crtc *intel_crtc; - int ret = 0; - int i; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - for (i = 0; i < par->crtc_count; i++) - if (crtc->base.id == par->crtc_ids[i]) - break; - - if (i == par->crtc_count) - continue; - - intel_crtc = to_intel_crtc(crtc); - modeset = &intel_crtc->mode_set; - - modeset->x = var->xoffset; - modeset->y = var->yoffset; - - if (modeset->num_connectors) { - mutex_lock(&dev->mode_config.mutex); - ret = crtc->funcs->set_config(modeset); - mutex_unlock(&dev->mode_config.mutex); - if (!ret) { - info->var.xoffset = var->xoffset; - info->var.yoffset = var->yoffset; - } - } - } - - return ret; -} - -static void intelfb_on(struct fb_info *info) -{ - struct intelfb_par *par = info->par; - struct drm_device *dev = par->dev; - struct drm_crtc *crtc; - struct drm_encoder *encoder; - int i; - - /* - * For each CRTC in this fb, find all associated encoders - * and turn them off, then turn off the CRTC. - */ - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; - - for (i = 0; i < par->crtc_count; i++) - if (crtc->base.id == par->crtc_ids[i]) - break; - - crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); - - /* Found a CRTC on this fb, now find encoders */ - list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - if (encoder->crtc == crtc) { - struct drm_encoder_helper_funcs *encoder_funcs; - encoder_funcs = encoder->helper_private; - encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); - } - } - } -} - -static void intelfb_off(struct fb_info *info, int dpms_mode) -{ - struct intelfb_par *par = info->par; - struct drm_device *dev = par->dev; - struct drm_crtc *crtc; - struct drm_encoder *encoder; - int i; - - /* - * For each CRTC in this fb, find all associated encoders - * and turn them off, then turn off the CRTC. - */ - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; - - for (i = 0; i < par->crtc_count; i++) - if (crtc->base.id == par->crtc_ids[i]) - break; - - /* Found a CRTC on this fb, now find encoders */ - list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - if (encoder->crtc == crtc) { - struct drm_encoder_helper_funcs *encoder_funcs; - encoder_funcs = encoder->helper_private; - encoder_funcs->dpms(encoder, dpms_mode); - } - } - if (dpms_mode == DRM_MODE_DPMS_OFF) - crtc_funcs->dpms(crtc, dpms_mode); - } -} - -static int intelfb_blank(int blank, struct fb_info *info) -{ - switch (blank) { - case FB_BLANK_UNBLANK: - intelfb_on(info); - break; - case FB_BLANK_NORMAL: - intelfb_off(info, DRM_MODE_DPMS_STANDBY); - break; - case FB_BLANK_HSYNC_SUSPEND: - intelfb_off(info, DRM_MODE_DPMS_STANDBY); - break; - case FB_BLANK_VSYNC_SUSPEND: - intelfb_off(info, DRM_MODE_DPMS_SUSPEND); - break; - case FB_BLANK_POWERDOWN: - intelfb_off(info, DRM_MODE_DPMS_OFF); - break; - } - return 0; -} - -static struct fb_ops intelfb_ops = { - .owner = THIS_MODULE, - .fb_check_var = intelfb_check_var, - .fb_set_par = intelfb_set_par, - .fb_setcolreg = intelfb_setcolreg, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_pan_display = intelfb_pan_display, - .fb_blank = intelfb_blank, -}; - -/** - * Curretly it is assumed that the old framebuffer is reused. - * - * LOCKING - * caller should hold the mode config lock. - * - */ -int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) -{ - struct fb_info *info; - struct drm_framebuffer *fb; - struct drm_display_mode *mode = crtc->desired_mode; - - fb = crtc->fb; - if (!fb) - return 1; - - info = fb->fbdev; - if (!info) - return 1; - - if (!mode) - return 1; - - info->var.xres = mode->hdisplay; - info->var.right_margin = mode->hsync_start - mode->hdisplay; - info->var.hsync_len = mode->hsync_end - mode->hsync_start; - info->var.left_margin = mode->htotal - mode->hsync_end; - info->var.yres = mode->vdisplay; - info->var.lower_margin = mode->vsync_start - mode->vdisplay; - info->var.vsync_len = mode->vsync_end - mode->vsync_start; - info->var.upper_margin = mode->vtotal - mode->vsync_end; - info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; - /* avoid overflow */ - info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; - - return 0; -} -EXPORT_SYMBOL(intelfb_resize); - -static struct drm_mode_set kernelfb_mode; - -static int intelfb_panic(struct notifier_block *n, unsigned long ununsed, - void *panic_str) -{ - DRM_ERROR("panic occurred, switching back to text console\n"); - - intelfb_restore(); - return 0; -} - -static struct notifier_block paniced = { - .notifier_call = intelfb_panic, -}; - -static int intelfb_create(struct drm_device *dev, uint32_t fb_width, - uint32_t fb_height, uint32_t surface_width, - uint32_t surface_height, - struct intel_framebuffer **intel_fb_p) -{ - struct fb_info *info; - struct intelfb_par *par; - struct drm_framebuffer *fb; - struct intel_framebuffer *intel_fb; - struct drm_mode_fb_cmd mode_cmd; - struct drm_gem_object *fbo = NULL; - struct drm_i915_gem_object *obj_priv; - struct device *device = &dev->pdev->dev; - int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; - - mode_cmd.width = surface_width; - mode_cmd.height = surface_height; - - mode_cmd.bpp = 32; - mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); - mode_cmd.depth = 24; - - size = mode_cmd.pitch * mode_cmd.height; - size = ALIGN(size, PAGE_SIZE); - fbo = drm_gem_object_alloc(dev, size); - if (!fbo) { - printk(KERN_ERR "failed to allocate framebuffer\n"); - ret = -ENOMEM; - goto out; - } - obj_priv = fbo->driver_private; - - mutex_lock(&dev->struct_mutex); - - ret = i915_gem_object_pin(fbo, PAGE_SIZE); - if (ret) { - DRM_ERROR("failed to pin fb: %d\n", ret); - goto out_unref; - } - - /* Flush everything out, we'll be doing GTT only from now on */ - i915_gem_object_set_to_gtt_domain(fbo, 1); - - ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); - if (ret) { - DRM_ERROR("failed to allocate fb.\n"); - goto out_unpin; - } - - list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); - - intel_fb = to_intel_framebuffer(fb); - *intel_fb_p = intel_fb; - - info = framebuffer_alloc(sizeof(struct intelfb_par), device); - if (!info) { - ret = -ENOMEM; - goto out_unpin; - } - - par = info->par; - - strcpy(info->fix.id, "inteldrmfb"); - info->fix.type = FB_TYPE_PACKED_PIXELS; - info->fix.visual = FB_VISUAL_TRUECOLOR; - info->fix.type_aux = 0; - info->fix.xpanstep = 1; /* doing it in hw */ - info->fix.ypanstep = 1; /* doing it in hw */ - info->fix.ywrapstep = 0; - info->fix.accel = FB_ACCEL_I830; - info->fix.type_aux = 0; - - info->flags = FBINFO_DEFAULT; - - info->fbops = &intelfb_ops; - - info->fix.line_length = fb->pitch; - info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; - info->fix.smem_len = size; - - info->flags = FBINFO_DEFAULT; - - info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, - size); - if (!info->screen_base) { - ret = -ENOSPC; - goto out_unpin; - } - info->screen_size = size; - -// memset(info->screen_base, 0, size); - - info->pseudo_palette = fb->pseudo_palette; - info->var.xres_virtual = fb->width; - info->var.yres_virtual = fb->height; - info->var.bits_per_pixel = fb->bits_per_pixel; - info->var.xoffset = 0; - info->var.yoffset = 0; - info->var.activate = FB_ACTIVATE_NOW; - info->var.height = -1; - info->var.width = -1; - - info->var.xres = fb_width; - info->var.yres = fb_height; - - /* FIXME: we really shouldn't expose mmio space at all */ - info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); - info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); - - 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; - - switch(fb->depth) { - case 8: - info->var.red.offset = 0; - info->var.green.offset = 0; - info->var.blue.offset = 0; - info->var.red.length = 8; /* 8bit DAC */ - info->var.green.length = 8; - info->var.blue.length = 8; - info->var.transp.offset = 0; - info->var.transp.length = 0; - break; - case 15: - info->var.red.offset = 10; - info->var.green.offset = 5; - info->var.blue.offset = 0; - info->var.red.length = 5; - info->var.green.length = 5; - info->var.blue.length = 5; - info->var.transp.offset = 15; - info->var.transp.length = 1; - break; - case 16: - info->var.red.offset = 11; - info->var.green.offset = 5; - info->var.blue.offset = 0; - info->var.red.length = 5; - info->var.green.length = 6; - info->var.blue.length = 5; - info->var.transp.offset = 0; - break; - case 24: - info->var.red.offset = 16; - info->var.green.offset = 8; - info->var.blue.offset = 0; - info->var.red.length = 8; - info->var.green.length = 8; - info->var.blue.length = 8; - info->var.transp.offset = 0; - info->var.transp.length = 0; - break; - case 32: - info->var.red.offset = 16; - info->var.green.offset = 8; - info->var.blue.offset = 0; - info->var.red.length = 8; - info->var.green.length = 8; - info->var.blue.length = 8; - info->var.transp.offset = 24; - info->var.transp.length = 8; - break; - default: - break; - } - - fb->fbdev = info; - - par->intel_fb = intel_fb; - par->dev = dev; - - /* To allow resizeing without swapping buffers */ - printk("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, - intel_fb->base.height, obj_priv->gtt_offset, fbo); - - mutex_unlock(&dev->struct_mutex); - return 0; - -out_unpin: - i915_gem_object_unpin(fbo); -out_unref: - drm_gem_object_unreference(fbo); - mutex_unlock(&dev->struct_mutex); -out: - return ret; -} - -static int intelfb_multi_fb_probe_crtc(struct drm_device *dev, struct drm_crtc *crtc) -{ - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - struct intel_framebuffer *intel_fb; - struct drm_framebuffer *fb; - struct drm_connector *connector; - struct fb_info *info; - struct intelfb_par *par; - struct drm_mode_set *modeset; - unsigned int width, height; - int new_fb = 0; - int ret, i, conn_count; - - if (!drm_helper_crtc_in_use(crtc)) - return 0; - - if (!crtc->desired_mode) - return 0; - - width = crtc->desired_mode->hdisplay; - height = crtc->desired_mode->vdisplay; - - /* is there an fb bound to this crtc already */ - if (!intel_crtc->mode_set.fb) { - ret = intelfb_create(dev, width, height, width, height, &intel_fb); - if (ret) - return -EINVAL; - new_fb = 1; - } else { - fb = intel_crtc->mode_set.fb; - intel_fb = to_intel_framebuffer(fb); - if ((intel_fb->base.width < width) || (intel_fb->base.height < height)) - return -EINVAL; - } - - info = intel_fb->base.fbdev; - par = info->par; - - modeset = &intel_crtc->mode_set; - modeset->fb = &intel_fb->base; - conn_count = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - if (connector->encoder) - if (connector->encoder->crtc == modeset->crtc) { - modeset->connectors[conn_count] = connector; - conn_count++; - if (conn_count > INTELFB_CONN_LIMIT) - BUG(); - } - } - - for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) - modeset->connectors[i] = NULL; - - par->crtc_ids[0] = crtc->base.id; - - modeset->num_connectors = conn_count; - if (modeset->mode != modeset->crtc->desired_mode) - modeset->mode = modeset->crtc->desired_mode; - - par->crtc_count = 1; - - if (new_fb) { - info->var.pixclock = -1; - if (register_framebuffer(info) < 0) - return -EINVAL; - } else - intelfb_set_par(info); - - printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, - info->fix.id); - - /* Switch back to kernel console on panic */ - kernelfb_mode = *modeset; - atomic_notifier_chain_register(&panic_notifier_list, &paniced); - printk(KERN_INFO "registered panic notifier\n"); - - return 0; -} - -static int intelfb_multi_fb_probe(struct drm_device *dev) -{ - - struct drm_crtc *crtc; - int ret = 0; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - ret = intelfb_multi_fb_probe_crtc(dev, crtc); - if (ret) - return ret; - } - return ret; -} - -static int intelfb_single_fb_probe(struct drm_device *dev) -{ - struct drm_crtc *crtc; - struct drm_connector *connector; - unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; - unsigned int surface_width = 0, surface_height = 0; - int new_fb = 0; - int crtc_count = 0; - int ret, i, conn_count = 0; - struct intel_framebuffer *intel_fb; - struct fb_info *info; - struct intelfb_par *par; - struct drm_mode_set *modeset = NULL; - - DRM_DEBUG("\n"); - - /* Get a count of crtcs now in use and new min/maxes width/heights */ - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - if (!drm_helper_crtc_in_use(crtc)) - continue; - - crtc_count++; - if (!crtc->desired_mode) - continue; - - /* Smallest mode determines console size... */ - if (crtc->desired_mode->hdisplay < fb_width) - fb_width = crtc->desired_mode->hdisplay; - - if (crtc->desired_mode->vdisplay < fb_height) - fb_height = crtc->desired_mode->vdisplay; - - /* ... but largest for memory allocation dimensions */ - if (crtc->desired_mode->hdisplay > surface_width) - surface_width = crtc->desired_mode->hdisplay; - - if (crtc->desired_mode->vdisplay > surface_height) - surface_height = crtc->desired_mode->vdisplay; - } - - if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { - /* hmm everyone went away - assume VGA cable just fell out - and will come back later. */ - DRM_DEBUG("no CRTCs available?\n"); - return 0; - } - -//fail - /* Find the fb for our new config */ - if (list_empty(&dev->mode_config.fb_kernel_list)) { - DRM_DEBUG("creating new fb (console size %dx%d, " - "buffer size %dx%d)\n", fb_width, fb_height, - surface_width, surface_height); - ret = intelfb_create(dev, fb_width, fb_height, surface_width, - surface_height, &intel_fb); - if (ret) - return -EINVAL; - new_fb = 1; - } else { - struct drm_framebuffer *fb; - - fb = list_first_entry(&dev->mode_config.fb_kernel_list, - struct drm_framebuffer, filp_head); - intel_fb = to_intel_framebuffer(fb); - - /* if someone hotplugs something bigger than we have already - * allocated, we are pwned. As really we can't resize an - * fbdev that is in the wild currently due to fbdev not really - * being designed for the lower layers moving stuff around - * under it. - * - so in the grand style of things - punt. - */ - if ((fb->width < surface_width) || - (fb->height < surface_height)) { - DRM_ERROR("fb not large enough for console\n"); - return -EINVAL; - } - } -// fail - - info = intel_fb->base.fbdev; - par = info->par; - - crtc_count = 0; - /* - * For each CRTC, set up the connector list for the CRTC's mode - * set configuration. - */ - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - - modeset = &intel_crtc->mode_set; - modeset->fb = &intel_fb->base; - conn_count = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, - head) { - if (!connector->encoder) - continue; - - if(connector->encoder->crtc == modeset->crtc) { - modeset->connectors[conn_count++] = connector; - if (conn_count > INTELFB_CONN_LIMIT) - BUG(); - } - } - - /* Zero out remaining connector pointers */ - for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) - modeset->connectors[i] = NULL; - - par->crtc_ids[crtc_count++] = crtc->base.id; - - modeset->num_connectors = conn_count; - if (modeset->mode != modeset->crtc->desired_mode) - modeset->mode = modeset->crtc->desired_mode; - } - par->crtc_count = crtc_count; - - if (new_fb) { - info->var.pixclock = -1; - if (register_framebuffer(info) < 0) - return -EINVAL; - } else - intelfb_set_par(info); - - printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, - info->fix.id); - - /* Switch back to kernel console on panic */ - kernelfb_mode = *modeset; - atomic_notifier_chain_register(&panic_notifier_list, &paniced); - printk(KERN_INFO "registered panic notifier\n"); - - return 0; -} - -/** - * intelfb_restore - restore the framebuffer console (kernel) config - * - * Restore's the kernel's fbcon mode, used for lastclose & panic paths. - */ -void intelfb_restore(void) -{ - drm_crtc_helper_set_config(&kernelfb_mode); -} - -static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3) -{ - intelfb_restore(); -} - -static struct sysrq_key_op sysrq_intelfb_restore_op = { - .handler = intelfb_sysrq, - .help_msg = "force fb", - .action_msg = "force restore of fb console", -}; - -int intelfb_probe(struct drm_device *dev) -{ - int ret; - - DRM_DEBUG("\n"); - - /* something has changed in the lower levels of hell - deal with it - here */ - - /* two modes : a) 1 fb to rule all crtcs. - b) one fb per crtc. - two actions 1) new connected device - 2) device removed. - case a/1 : if the fb surface isn't big enough - resize the surface fb. - if the fb size isn't big enough - resize fb into surface. - if everything big enough configure the new crtc/etc. - case a/2 : undo the configuration - possibly resize down the fb to fit the new configuration. - case b/1 : see if it is on a new crtc - setup a new fb and add it. - case b/2 : teardown the new fb. - */ - - /* mode a first */ - /* search for an fb */ - if (i915_fbpercrtc == 1) { - ret = intelfb_multi_fb_probe(dev); - } else { - ret = intelfb_single_fb_probe(dev); - } - - register_sysrq_key('g', &sysrq_intelfb_restore_op); - - return ret; -} -EXPORT_SYMBOL(intelfb_probe); - -int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) -{ - struct fb_info *info; - - if (!fb) - return -EINVAL; - - info = fb->fbdev; - - if (info) { - unregister_framebuffer(info); - iounmap(info->screen_base); - framebuffer_release(info); - } - - atomic_notifier_chain_unregister(&panic_notifier_list, &paniced); - memset(&kernelfb_mode, 0, sizeof(struct drm_mode_set)); - return 0; -} -EXPORT_SYMBOL(intelfb_remove); -MODULE_LICENSE("GPL and additional rights"); |