drm/kms: move driver specific fb common code to helper functions (v2)
Initially I always meant this code to be shared, but things ran away from me before I got to it. This refactors the i915 and radeon kms fbdev interaction layers out into generic helpers + driver specific pieces. It moves all the panic/sysrq enhancements to the core file, and stores a linked list of kernel fbs. This could possibly be improved to only store the fb which has fbcon on it for panics etc. radeon retains some specific codes used for a big endian workaround. changes: fix oops in v1 fix freeing path for crtc_info Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
@@ -39,339 +39,34 @@
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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 "drm_fb_helper.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 drm_fb_helper helper;
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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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struct drm_display_mode *our_mode;
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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 CLOCK 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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static 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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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_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_setcolreg = drm_fb_helper_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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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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};
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static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
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.gamma_set = intel_crtc_fb_gamma_set,
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};
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/**
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* Curretly it is assumed that the old framebuffer is reused.
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*
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@@ -412,25 +107,10 @@ int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc)
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}
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EXPORT_SYMBOL(intelfb_resize);
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static struct drm_mode_set kernelfb_mode;
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static int intelfb_panic(struct notifier_block *n, unsigned long ununsed,
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void *panic_str)
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{
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DRM_ERROR("panic occurred, switching back to text console\n");
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intelfb_restore();
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return 0;
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}
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static struct notifier_block paniced = {
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.notifier_call = intelfb_panic,
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};
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static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
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uint32_t fb_height, uint32_t surface_width,
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uint32_t surface_height,
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struct intel_framebuffer **intel_fb_p)
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struct drm_framebuffer **fb_p)
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{
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struct fb_info *info;
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struct intelfb_par *par;
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@@ -479,7 +159,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
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list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
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intel_fb = to_intel_framebuffer(fb);
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*intel_fb_p = intel_fb;
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*fb_p = fb;
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info = framebuffer_alloc(sizeof(struct intelfb_par), device);
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if (!info) {
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@@ -489,21 +169,19 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
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par = info->par;
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par->helper.funcs = &intel_fb_helper_funcs;
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par->helper.dev = dev;
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ret = drm_fb_helper_init_crtc_count(&par->helper, 2,
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INTELFB_CONN_LIMIT);
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if (ret)
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goto out_unref;
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strcpy(info->fix.id, "inteldrmfb");
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info->fix.type = FB_TYPE_PACKED_PIXELS;
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info->fix.visual = FB_VISUAL_TRUECOLOR;
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info->fix.type_aux = 0;
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info->fix.xpanstep = 1; /* doing it in hw */
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info->fix.ypanstep = 1; /* doing it in hw */
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info->fix.ywrapstep = 0;
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info->fix.accel = FB_ACCEL_I830;
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info->fix.type_aux = 0;
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info->flags = FBINFO_DEFAULT;
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info->fbops = &intelfb_ops;
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info->fix.line_length = fb->pitch;
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/* setup aperture base/size for vesafb takeover */
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info->aperture_base = dev->mode_config.fb_base;
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@@ -527,18 +205,8 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
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// memset(info->screen_base, 0, size);
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info->pseudo_palette = fb->pseudo_palette;
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info->var.xres_virtual = fb->width;
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info->var.yres_virtual = fb->height;
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info->var.bits_per_pixel = fb->bits_per_pixel;
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info->var.xoffset = 0;
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info->var.yoffset = 0;
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info->var.activate = FB_ACTIVATE_NOW;
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info->var.height = -1;
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info->var.width = -1;
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info->var.xres = fb_width;
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info->var.yres = fb_height;
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drm_fb_helper_fill_fix(info, fb->depth);
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drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
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/* FIXME: we really shouldn't expose mmio space at all */
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info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
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@@ -550,64 +218,9 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
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info->pixmap.flags = FB_PIXMAP_SYSTEM;
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info->pixmap.scan_align = 1;
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switch(fb->depth) {
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case 8:
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info->var.red.offset = 0;
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info->var.green.offset = 0;
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info->var.blue.offset = 0;
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info->var.red.length = 8; /* 8bit DAC */
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info->var.green.length = 8;
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info->var.blue.length = 8;
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info->var.transp.offset = 0;
|
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info->var.transp.length = 0;
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break;
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case 15:
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info->var.red.offset = 10;
|
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info->var.green.offset = 5;
|
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info->var.blue.offset = 0;
|
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info->var.red.length = 5;
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info->var.green.length = 5;
|
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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 */
|
||||
DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width,
|
||||
@@ -625,307 +238,12 @@ 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->crtc->desired_mode) {
|
||||
if (modeset->mode)
|
||||
drm_mode_destroy(dev, modeset->mode);
|
||||
modeset->mode = drm_mode_duplicate(dev,
|
||||
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);
|
||||
|
||||
DRM_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);
|
||||
DRM_DEBUG("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->crtc->desired_mode) {
|
||||
if (modeset->mode)
|
||||
drm_mode_destroy(dev, modeset->mode);
|
||||
modeset->mode = drm_mode_duplicate(dev,
|
||||
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);
|
||||
|
||||
DRM_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);
|
||||
DRM_DEBUG("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)
|
||||
{
|
||||
int ret;
|
||||
if ((ret = drm_crtc_helper_set_config(&kernelfb_mode)) != 0) {
|
||||
DRM_ERROR("Failed to restore crtc configuration: %d\n",
|
||||
ret);
|
||||
}
|
||||
}
|
||||
|
||||
static void intelfb_restore_work_fn(struct work_struct *ignored)
|
||||
{
|
||||
intelfb_restore();
|
||||
}
|
||||
static DECLARE_WORK(intelfb_restore_work, intelfb_restore_work_fn);
|
||||
|
||||
static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3)
|
||||
{
|
||||
schedule_work(&intelfb_restore_work);
|
||||
}
|
||||
|
||||
static struct sysrq_key_op sysrq_intelfb_restore_op = {
|
||||
.handler = intelfb_sysrq,
|
||||
.help_msg = "force-fb(V)",
|
||||
.action_msg = "Restore framebuffer 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('v', &sysrq_intelfb_restore_op);
|
||||
|
||||
ret = drm_fb_helper_single_fb_probe(dev, intelfb_create);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(intelfb_probe);
|
||||
@@ -940,13 +258,14 @@ int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
|
||||
info = fb->fbdev;
|
||||
|
||||
if (info) {
|
||||
struct intelfb_par *par = info->par;
|
||||
unregister_framebuffer(info);
|
||||
iounmap(info->screen_base);
|
||||
if (info->par)
|
||||
drm_fb_helper_free(&par->helper);
|
||||
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);
|
||||
|
||||
Reference in New Issue
Block a user