diff options
Diffstat (limited to 'linux-core/drm_modes.c')
| -rw-r--r-- | linux-core/drm_modes.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/linux-core/drm_modes.c b/linux-core/drm_modes.c deleted file mode 100644 index 67f278eb..00000000 --- a/linux-core/drm_modes.c +++ /dev/null @@ -1,570 +0,0 @@ -/* - * Copyright © 1997-2003 by The XFree86 Project, Inc. - * - * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. - * - * Except as contained in this notice, the name of the copyright holder(s) - * and author(s) shall not be used in advertising or otherwise to promote - * the sale, use or other dealings in this Software without prior written - * authorization from the copyright holder(s) and author(s). - */ -/* - * Copyright © 2007 Dave Airlie - */ - -#include <linux/list.h> -#include "drmP.h" -#include "drm.h" -#include "drm_crtc.h" - -/** - * drm_mode_debug_printmodeline - debug print a mode - * @dev: DRM device - * @mode: mode to print - * - * LOCKING: - * None. - * - * Describe @mode using DRM_DEBUG. - */ -void drm_mode_debug_printmodeline(struct drm_display_mode *mode) -{ - DRM_DEBUG("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n", - mode->base.id, mode->name, mode->vrefresh, mode->clock, - mode->hdisplay, mode->hsync_start, - mode->hsync_end, mode->htotal, - mode->vdisplay, mode->vsync_start, - mode->vsync_end, mode->vtotal, mode->type, mode->flags); -} -EXPORT_SYMBOL(drm_mode_debug_printmodeline); - -/** - * drm_mode_set_name - set the name on a mode - * @mode: name will be set in this mode - * - * LOCKING: - * None. - * - * Set the name of @mode to a standard format. - */ -void drm_mode_set_name(struct drm_display_mode *mode) -{ - snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d", mode->hdisplay, - mode->vdisplay); -} -EXPORT_SYMBOL(drm_mode_set_name); - -/** - * drm_mode_list_concat - move modes from one list to another - * @head: source list - * @new: dst list - * - * LOCKING: - * Caller must ensure both lists are locked. - * - * Move all the modes from @head to @new. - */ -void drm_mode_list_concat(struct list_head *head, struct list_head *new) -{ - - struct list_head *entry, *tmp; - - list_for_each_safe(entry, tmp, head) { - list_move_tail(entry, new); - } -} -EXPORT_SYMBOL(drm_mode_list_concat); - -/** - * drm_mode_width - get the width of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's width (hdisplay) value. - * - * FIXME: is this needed? - * - * RETURNS: - * @mode->hdisplay - */ -int drm_mode_width(struct drm_display_mode *mode) -{ - return mode->hdisplay; - -} -EXPORT_SYMBOL(drm_mode_width); - -/** - * drm_mode_height - get the height of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's height (vdisplay) value. - * - * FIXME: is this needed? - * - * RETURNS: - * @mode->vdisplay - */ -int drm_mode_height(struct drm_display_mode *mode) -{ - return mode->vdisplay; -} -EXPORT_SYMBOL(drm_mode_height); - -/** - * drm_mode_vrefresh - get the vrefresh of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's vrefresh rate or calculate it if necessary. - * - * FIXME: why is this needed? shouldn't vrefresh be set already? - * - * RETURNS: - * Vertical refresh rate of @mode x 1000. For precision reasons. - */ -int drm_mode_vrefresh(struct drm_display_mode *mode) -{ - int refresh = 0; - unsigned int calc_val; - - if (mode->vrefresh > 0) - refresh = mode->vrefresh; - else if (mode->htotal > 0 && mode->vtotal > 0) { - /* work out vrefresh the value will be x1000 */ - calc_val = (mode->clock * 1000); - - calc_val /= mode->htotal; - calc_val *= 1000; - calc_val /= mode->vtotal; - - refresh = calc_val; - if (mode->flags & DRM_MODE_FLAG_INTERLACE) - refresh *= 2; - if (mode->flags & DRM_MODE_FLAG_DBLSCAN) - refresh /= 2; - if (mode->vscan > 1) - refresh /= mode->vscan; - } - return refresh; -} -EXPORT_SYMBOL(drm_mode_vrefresh); - -/** - * drm_mode_set_crtcinfo - set CRTC modesetting parameters - * @p: mode - * @adjust_flags: unused? (FIXME) - * - * LOCKING: - * None. - * - * Setup the CRTC modesetting parameters for @p, adjusting if necessary. - */ -void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) -{ - if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN)) - return; - - p->crtc_hdisplay = p->hdisplay; - p->crtc_hsync_start = p->hsync_start; - p->crtc_hsync_end = p->hsync_end; - p->crtc_htotal = p->htotal; - p->crtc_hskew = p->hskew; - p->crtc_vdisplay = p->vdisplay; - p->crtc_vsync_start = p->vsync_start; - p->crtc_vsync_end = p->vsync_end; - p->crtc_vtotal = p->vtotal; - - if (p->flags & DRM_MODE_FLAG_INTERLACE) { - if (adjust_flags & CRTC_INTERLACE_HALVE_V) { - p->crtc_vdisplay /= 2; - p->crtc_vsync_start /= 2; - p->crtc_vsync_end /= 2; - p->crtc_vtotal /= 2; - } - - p->crtc_vtotal |= 1; - } - - if (p->flags & DRM_MODE_FLAG_DBLSCAN) { - p->crtc_vdisplay *= 2; - p->crtc_vsync_start *= 2; - p->crtc_vsync_end *= 2; - p->crtc_vtotal *= 2; - } - - if (p->vscan > 1) { - p->crtc_vdisplay *= p->vscan; - p->crtc_vsync_start *= p->vscan; - p->crtc_vsync_end *= p->vscan; - p->crtc_vtotal *= p->vscan; - } - - p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); - p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); - p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); - p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); - - p->crtc_hadjusted = false; - p->crtc_vadjusted = false; -} -EXPORT_SYMBOL(drm_mode_set_crtcinfo); - - -/** - * drm_mode_duplicate - allocate and duplicate an existing mode - * @m: mode to duplicate - * - * LOCKING: - * None. - * - * Just allocate a new mode, copy the existing mode into it, and return - * a pointer to it. Used to create new instances of established modes. - */ -struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, - struct drm_display_mode *mode) -{ - struct drm_display_mode *nmode; - int new_id; - - nmode = drm_mode_create(dev); - if (!nmode) - return NULL; - - new_id = nmode->base.id; - *nmode = *mode; - nmode->base.id = new_id; - INIT_LIST_HEAD(&nmode->head); - return nmode; -} -EXPORT_SYMBOL(drm_mode_duplicate); - -/** - * drm_mode_equal - test modes for equality - * @mode1: first mode - * @mode2: second mode - * - * LOCKING: - * None. - * - * Check to see if @mode1 and @mode2 are equivalent. - * - * RETURNS: - * True if the modes are equal, false otherwise. - */ -bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2) -{ - /* do clock check convert to PICOS so fb modes get matched - * the same */ - if (mode1->clock && mode2->clock) { - if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock)) - return false; - } else if (mode1->clock != mode2->clock) - return false; - - if (mode1->hdisplay == mode2->hdisplay && - mode1->hsync_start == mode2->hsync_start && - mode1->hsync_end == mode2->hsync_end && - mode1->htotal == mode2->htotal && - mode1->hskew == mode2->hskew && - mode1->vdisplay == mode2->vdisplay && - mode1->vsync_start == mode2->vsync_start && - mode1->vsync_end == mode2->vsync_end && - mode1->vtotal == mode2->vtotal && - mode1->vscan == mode2->vscan && - mode1->flags == mode2->flags) - return true; - - return false; -} -EXPORT_SYMBOL(drm_mode_equal); - -/** - * drm_mode_validate_size - make sure modes adhere to size constraints - * @dev: DRM device - * @mode_list: list of modes to check - * @maxX: maximum width - * @maxY: maximum height - * @maxPitch: max pitch - * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * The DRM device (@dev) has size and pitch limits. Here we validate the - * modes we probed for @dev against those limits and set their status as - * necessary. - */ -void drm_mode_validate_size(struct drm_device *dev, - struct list_head *mode_list, - int maxX, int maxY, int maxPitch) -{ - struct drm_display_mode *mode; - - list_for_each_entry(mode, mode_list, head) { - if (maxPitch > 0 && mode->hdisplay > maxPitch) - mode->status = MODE_BAD_WIDTH; - - if (maxX > 0 && mode->hdisplay > maxX) - mode->status = MODE_VIRTUAL_X; - - if (maxY > 0 && mode->vdisplay > maxY) - mode->status = MODE_VIRTUAL_Y; - } -} -EXPORT_SYMBOL(drm_mode_validate_size); - -/** - * drm_mode_validate_clocks - validate modes against clock limits - * @dev: DRM device - * @mode_list: list of modes to check - * @min: minimum clock rate array - * @max: maximum clock rate array - * @n_ranges: number of clock ranges (size of arrays) - * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * Some code may need to check a mode list against the clock limits of the - * device in question. This function walks the mode list, testing to make - * sure each mode falls within a given range (defined by @min and @max - * arrays) and sets @mode->status as needed. - */ -void drm_mode_validate_clocks(struct drm_device *dev, - struct list_head *mode_list, - int *min, int *max, int n_ranges) -{ - struct drm_display_mode *mode; - int i; - - list_for_each_entry(mode, mode_list, head) { - bool good = false; - for (i = 0; i < n_ranges; i++) { - if (mode->clock >= min[i] && mode->clock <= max[i]) { - good = true; - break; - } - } - if (!good) - mode->status = MODE_CLOCK_RANGE; - } -} -EXPORT_SYMBOL(drm_mode_validate_clocks); - -/** - * drm_mode_prune_invalid - remove invalid modes from mode list - * @dev: DRM device - * @mode_list: list of modes to check - * @verbose: be verbose about it - * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * Once mode list generation is complete, a caller can use this routine to - * remove invalid modes from a mode list. If any of the modes have a - * status other than %MODE_OK, they are removed from @mode_list and freed. - */ -void drm_mode_prune_invalid(struct drm_device *dev, - struct list_head *mode_list, bool verbose) -{ - struct drm_display_mode *mode, *t; - - list_for_each_entry_safe(mode, t, mode_list, head) { - if (mode->status != MODE_OK) { - list_del(&mode->head); - if (verbose) { - drm_mode_debug_printmodeline(mode); - DRM_DEBUG("Not using %s mode %d\n", mode->name, mode->status); - } - drm_mode_destroy(dev, mode); - } - } -} -EXPORT_SYMBOL(drm_mode_prune_invalid); - -/** - * drm_mode_compare - compare modes for favorability - * @lh_a: list_head for first mode - * @lh_b: list_head for second mode - * - * LOCKING: - * None. - * - * Compare two modes, given by @lh_a and @lh_b, returning a value indicating - * which is better. - * - * RETURNS: - * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or - * positive if @lh_b is better than @lh_a. - */ -static int drm_mode_compare(struct list_head *lh_a, struct list_head *lh_b) -{ - struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); - struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); - int diff; - - diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - - ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); - if (diff) - return diff; - diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; - if (diff) - return diff; - diff = b->clock - a->clock; - return diff; -} - -/* FIXME: what we don't have a list sort function? */ -/* list sort from Mark J Roberts (mjr@znex.org) */ -void list_sort(struct list_head *head, int (*cmp)(struct list_head *a, struct list_head *b)) -{ - struct list_head *p, *q, *e, *list, *tail, *oldhead; - int insize, nmerges, psize, qsize, i; - - list = head->next; - list_del(head); - insize = 1; - for (;;) { - p = oldhead = list; - list = tail = NULL; - nmerges = 0; - - while (p) { - nmerges++; - q = p; - psize = 0; - for (i = 0; i < insize; i++) { - psize++; - q = q->next == oldhead ? NULL : q->next; - if (!q) - break; - } - - qsize = insize; - while (psize > 0 || (qsize > 0 && q)) { - if (!psize) { - e = q; - q = q->next; - qsize--; - if (q == oldhead) - q = NULL; - } else if (!qsize || !q) { - e = p; - p = p->next; - psize--; - if (p == oldhead) - p = NULL; - } else if (cmp(p, q) <= 0) { - e = p; - p = p->next; - psize--; - if (p == oldhead) - p = NULL; - } else { - e = q; - q = q->next; - qsize--; - if (q == oldhead) - q = NULL; - } - if (tail) - tail->next = e; - else - list = e; - e->prev = tail; - tail = e; - } - p = q; - } - - tail->next = list; - list->prev = tail; - - if (nmerges <= 1) - break; - - insize *= 2; - } - - head->next = list; - head->prev = list->prev; - list->prev->next = head; - list->prev = head; -} - -/** - * drm_mode_sort - sort mode list - * @mode_list: list to sort - * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * Sort @mode_list by favorability, putting good modes first. - */ -void drm_mode_sort(struct list_head *mode_list) -{ - list_sort(mode_list, drm_mode_compare); -} -EXPORT_SYMBOL(drm_mode_sort); - -/** - * drm_mode_connector_list_update - update the mode list for the connector - * @connector: the connector to update - * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * This moves the modes from the @connector probed_modes list - * to the actual mode list. It compares the probed mode against the current - * list and only adds different modes. All modes unverified after this point - * will be removed by the prune invalid modes. - */ -void drm_mode_connector_list_update(struct drm_connector *connector) -{ - struct drm_display_mode *mode; - struct drm_display_mode *pmode, *pt; - int found_it; - - list_for_each_entry_safe(pmode, pt, &connector->probed_modes, - head) { - found_it = 0; - /* go through current modes checking for the new probed mode */ - list_for_each_entry(mode, &connector->modes, head) { - if (drm_mode_equal(pmode, mode)) { - found_it = 1; - /* if equal delete the probed mode */ - mode->status = pmode->status; - list_del(&pmode->head); - drm_mode_destroy(connector->dev, pmode); - break; - } - } - - if (!found_it) { - list_move_tail(&pmode->head, &connector->modes); - } - } -} -EXPORT_SYMBOL(drm_mode_connector_list_update); |