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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
927 lines
23 KiB
C
927 lines
23 KiB
C
![]() |
/*
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* Copyright © 2007 David Airlie
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* David Airlie
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/slab.h>
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#include <linux/sysrq.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include "drmP.h"
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#include "drm.h"
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#include "drm_crtc.h"
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#include "intel_drv.h"
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#include "i915_drm.h"
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#include "i915_drv.h"
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struct intelfb_par {
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struct drm_device *dev;
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struct drm_display_mode *our_mode;
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struct intel_framebuffer *intel_fb;
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int crtc_count;
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/* crtc currently bound to this */
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uint32_t crtc_ids[2];
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};
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static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
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unsigned blue, unsigned transp,
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struct fb_info *info)
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{
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struct intelfb_par *par = info->par;
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struct drm_device *dev = par->dev;
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struct drm_crtc *crtc;
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int i;
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
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struct drm_mode_set *modeset = &intel_crtc->mode_set;
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struct drm_framebuffer *fb = modeset->fb;
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for (i = 0; i < par->crtc_count; i++)
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if (crtc->base.id == par->crtc_ids[i])
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break;
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if (i == par->crtc_count)
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continue;
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if (regno > 255)
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return 1;
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if (fb->depth == 8) {
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intel_crtc_fb_gamma_set(crtc, red, green, blue, regno);
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return 0;
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}
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if (regno < 16) {
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switch (fb->depth) {
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case 15:
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fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
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((green & 0xf800) >> 6) |
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((blue & 0xf800) >> 11);
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break;
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case 16:
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fb->pseudo_palette[regno] = (red & 0xf800) |
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((green & 0xfc00) >> 5) |
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((blue & 0xf800) >> 11);
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break;
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case 24:
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case 32:
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fb->pseudo_palette[regno] = ((red & 0xff00) << 8) |
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(green & 0xff00) |
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((blue & 0xff00) >> 8);
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break;
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}
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}
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}
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return 0;
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}
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static int intelfb_check_var(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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struct intelfb_par *par = info->par;
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struct intel_framebuffer *intel_fb = par->intel_fb;
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struct drm_framebuffer *fb = &intel_fb->base;
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int depth;
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if (var->pixclock == -1 || !var->pixclock)
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return -EINVAL;
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/* Need to resize the fb object !!! */
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if (var->xres > fb->width || var->yres > fb->height) {
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DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height);
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DRM_ERROR("Need resizing code.\n");
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return -EINVAL;
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}
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switch (var->bits_per_pixel) {
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case 16:
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depth = (var->green.length == 6) ? 16 : 15;
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break;
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case 32:
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depth = (var->transp.length > 0) ? 32 : 24;
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break;
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default:
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depth = var->bits_per_pixel;
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break;
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}
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switch (depth) {
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case 8:
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var->red.offset = 0;
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var->green.offset = 0;
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var->blue.offset = 0;
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var->red.length = 8;
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var->green.length = 8;
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var->blue.length = 8;
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var->transp.length = 0;
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var->transp.offset = 0;
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break;
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case 15:
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var->red.offset = 10;
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var->green.offset = 5;
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var->blue.offset = 0;
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var->red.length = 5;
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var->green.length = 5;
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var->blue.length = 5;
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var->transp.length = 1;
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var->transp.offset = 15;
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break;
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case 16:
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var->red.offset = 11;
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var->green.offset = 5;
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var->blue.offset = 0;
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var->red.length = 5;
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var->green.length = 6;
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var->blue.length = 5;
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var->transp.length = 0;
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var->transp.offset = 0;
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break;
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case 24:
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var->red.offset = 16;
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var->green.offset = 8;
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var->blue.offset = 0;
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var->red.length = 8;
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var->green.length = 8;
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var->blue.length = 8;
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var->transp.length = 0;
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var->transp.offset = 0;
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break;
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case 32:
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var->red.offset = 16;
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var->green.offset = 8;
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var->blue.offset = 0;
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var->red.length = 8;
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var->green.length = 8;
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var->blue.length = 8;
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var->transp.length = 8;
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var->transp.offset = 24;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/* this will let fbcon do the mode init */
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/* FIXME: take mode config lock? */
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static int intelfb_set_par(struct fb_info *info)
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{
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struct intelfb_par *par = info->par;
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struct drm_device *dev = par->dev;
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struct fb_var_screeninfo *var = &info->var;
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int i;
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DRM_DEBUG("%d %d\n", var->xres, var->pixclock);
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if (var->pixclock != -1) {
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DRM_ERROR("PIXEL CLCOK SET\n");
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return -EINVAL;
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} else {
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struct drm_crtc *crtc;
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int ret;
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
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for (i = 0; i < par->crtc_count; i++)
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if (crtc->base.id == par->crtc_ids[i])
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break;
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if (i == par->crtc_count)
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continue;
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if (crtc->fb == intel_crtc->mode_set.fb) {
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mutex_lock(&dev->mode_config.mutex);
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ret = crtc->funcs->set_config(&intel_crtc->mode_set);
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mutex_unlock(&dev->mode_config.mutex);
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if (ret)
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return ret;
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}
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}
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return 0;
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}
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}
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static int intelfb_pan_display(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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struct intelfb_par *par = info->par;
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struct drm_device *dev = par->dev;
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struct drm_mode_set *modeset;
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struct drm_crtc *crtc;
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struct intel_crtc *intel_crtc;
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int ret = 0;
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int i;
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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for (i = 0; i < par->crtc_count; i++)
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if (crtc->base.id == par->crtc_ids[i])
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break;
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if (i == par->crtc_count)
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continue;
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intel_crtc = to_intel_crtc(crtc);
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modeset = &intel_crtc->mode_set;
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modeset->x = var->xoffset;
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modeset->y = var->yoffset;
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if (modeset->num_connectors) {
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mutex_lock(&dev->mode_config.mutex);
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ret = crtc->funcs->set_config(modeset);
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mutex_unlock(&dev->mode_config.mutex);
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if (!ret) {
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info->var.xoffset = var->xoffset;
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info->var.yoffset = var->yoffset;
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}
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}
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}
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return ret;
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}
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static void intelfb_on(struct fb_info *info)
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{
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struct intelfb_par *par = info->par;
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struct drm_device *dev = par->dev;
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struct drm_crtc *crtc;
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struct drm_encoder *encoder;
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int i;
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/*
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* For each CRTC in this fb, find all associated encoders
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* and turn them off, then turn off the CRTC.
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*/
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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for (i = 0; i < par->crtc_count; i++)
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if (crtc->base.id == par->crtc_ids[i])
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break;
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crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
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/* Found a CRTC on this fb, now find encoders */
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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if (encoder->crtc == crtc) {
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struct drm_encoder_helper_funcs *encoder_funcs;
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encoder_funcs = encoder->helper_private;
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encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
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}
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}
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}
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}
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static void intelfb_off(struct fb_info *info, int dpms_mode)
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{
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struct intelfb_par *par = info->par;
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struct drm_device *dev = par->dev;
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struct drm_crtc *crtc;
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struct drm_encoder *encoder;
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int i;
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/*
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* For each CRTC in this fb, find all associated encoders
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* and turn them off, then turn off the CRTC.
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*/
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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for (i = 0; i < par->crtc_count; i++)
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if (crtc->base.id == par->crtc_ids[i])
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break;
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/* Found a CRTC on this fb, now find encoders */
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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if (encoder->crtc == crtc) {
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struct drm_encoder_helper_funcs *encoder_funcs;
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encoder_funcs = encoder->helper_private;
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encoder_funcs->dpms(encoder, dpms_mode);
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}
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}
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if (dpms_mode == DRM_MODE_DPMS_OFF)
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crtc_funcs->dpms(crtc, dpms_mode);
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}
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}
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int intelfb_blank(int blank, struct fb_info *info)
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{
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switch (blank) {
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case FB_BLANK_UNBLANK:
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intelfb_on(info);
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break;
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case FB_BLANK_NORMAL:
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intelfb_off(info, DRM_MODE_DPMS_STANDBY);
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break;
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case FB_BLANK_HSYNC_SUSPEND:
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intelfb_off(info, DRM_MODE_DPMS_STANDBY);
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break;
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case FB_BLANK_VSYNC_SUSPEND:
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intelfb_off(info, DRM_MODE_DPMS_SUSPEND);
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break;
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case FB_BLANK_POWERDOWN:
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intelfb_off(info, DRM_MODE_DPMS_OFF);
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break;
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}
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return 0;
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}
|
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|
|
||
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static struct fb_ops intelfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = intelfb_check_var,
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.fb_set_par = intelfb_set_par,
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.fb_setcolreg = intelfb_setcolreg,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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.fb_pan_display = intelfb_pan_display,
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.fb_blank = intelfb_blank,
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};
|
||
|
|
||
|
/**
|
||
|
* Curretly it is assumed that the old framebuffer is reused.
|
||
|
*
|
||
|
* LOCKING
|
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|
* caller should hold the mode config lock.
|
||
|
*
|
||
|
*/
|
||
|
int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc)
|
||
|
{
|
||
|
struct fb_info *info;
|
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|
struct drm_framebuffer *fb;
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|
struct drm_display_mode *mode = crtc->desired_mode;
|
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|
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fb = crtc->fb;
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if (!fb)
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return 1;
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|
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|
info = fb->fbdev;
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|
if (!info)
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|
return 1;
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||
|
|
||
|
if (!mode)
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|
return 1;
|
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|
|
||
|
info->var.xres = mode->hdisplay;
|
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|
info->var.right_margin = mode->hsync_start - mode->hdisplay;
|
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info->var.hsync_len = mode->hsync_end - mode->hsync_start;
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info->var.left_margin = mode->htotal - mode->hsync_end;
|
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|
info->var.yres = mode->vdisplay;
|
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|
info->var.lower_margin = mode->vsync_start - mode->vdisplay;
|
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|
info->var.vsync_len = mode->vsync_end - mode->vsync_start;
|
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|
info->var.upper_margin = mode->vtotal - mode->vsync_end;
|
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|
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;
|
||
|
|
||
|
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;
|
||
|
}
|
||
|
EXPORT_SYMBOL(intelfb_panic);
|
||
|
|
||
|
static struct notifier_block paniced = {
|
||
|
.notifier_call = intelfb_panic,
|
||
|
};
|
||
|
|
||
|
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 = mode_cmd.width * ((mode_cmd.bpp + 1) / 8);
|
||
|
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_unref;
|
||
|
}
|
||
|
|
||
|
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_unref;
|
||
|
}
|
||
|
|
||
|
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_unref;
|
||
|
}
|
||
|
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_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");
|