diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/gpu/drm/drm_modes.c | 1182 |
1 files changed, 0 insertions, 1182 deletions
diff --git a/ANDROID_3.4.5/drivers/gpu/drm/drm_modes.c b/ANDROID_3.4.5/drivers/gpu/drm/drm_modes.c deleted file mode 100644 index b7adb4a9..00000000 --- a/ANDROID_3.4.5/drivers/gpu/drm/drm_modes.c +++ /dev/null @@ -1,1182 +0,0 @@ -/* - * Copyright © 1997-2003 by The XFree86 Project, Inc. - * Copyright © 2007 Dave Airlie - * Copyright © 2007-2008 Intel Corporation - * Jesse Barnes <jesse.barnes@intel.com> - * Copyright 2005-2006 Luc Verhaegen - * Copyright (c) 2001, Andy Ritger aritger@nvidia.com - * - * 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). - */ - -#include <linux/list.h> -#include <linux/list_sort.h> -#include <linux/export.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_KMS("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_cvt_mode -create a modeline based on CVT algorithm - * @dev: DRM device - * @hdisplay: hdisplay size - * @vdisplay: vdisplay size - * @vrefresh : vrefresh rate - * @reduced : Whether the GTF calculation is simplified - * @interlaced:Whether the interlace is supported - * - * LOCKING: - * none. - * - * return the modeline based on CVT algorithm - * - * This function is called to generate the modeline based on CVT algorithm - * according to the hdisplay, vdisplay, vrefresh. - * It is based from the VESA(TM) Coordinated Video Timing Generator by - * Graham Loveridge April 9, 2003 available at - * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls - * - * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. - * What I have done is to translate it by using integer calculation. - */ -#define HV_FACTOR 1000 -struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, - int vdisplay, int vrefresh, - bool reduced, bool interlaced, bool margins) -{ - /* 1) top/bottom margin size (% of height) - default: 1.8, */ -#define CVT_MARGIN_PERCENTAGE 18 - /* 2) character cell horizontal granularity (pixels) - default 8 */ -#define CVT_H_GRANULARITY 8 - /* 3) Minimum vertical porch (lines) - default 3 */ -#define CVT_MIN_V_PORCH 3 - /* 4) Minimum number of vertical back porch lines - default 6 */ -#define CVT_MIN_V_BPORCH 6 - /* Pixel Clock step (kHz) */ -#define CVT_CLOCK_STEP 250 - struct drm_display_mode *drm_mode; - unsigned int vfieldrate, hperiod; - int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; - int interlace; - - /* allocate the drm_display_mode structure. If failure, we will - * return directly - */ - drm_mode = drm_mode_create(dev); - if (!drm_mode) - return NULL; - - /* the CVT default refresh rate is 60Hz */ - if (!vrefresh) - vrefresh = 60; - - /* the required field fresh rate */ - if (interlaced) - vfieldrate = vrefresh * 2; - else - vfieldrate = vrefresh; - - /* horizontal pixels */ - hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); - - /* determine the left&right borders */ - hmargin = 0; - if (margins) { - hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; - hmargin -= hmargin % CVT_H_GRANULARITY; - } - /* find the total active pixels */ - drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; - - /* find the number of lines per field */ - if (interlaced) - vdisplay_rnd = vdisplay / 2; - else - vdisplay_rnd = vdisplay; - - /* find the top & bottom borders */ - vmargin = 0; - if (margins) - vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; - - drm_mode->vdisplay = vdisplay + 2 * vmargin; - - /* Interlaced */ - if (interlaced) - interlace = 1; - else - interlace = 0; - - /* Determine VSync Width from aspect ratio */ - if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) - vsync = 4; - else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) - vsync = 5; - else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) - vsync = 6; - else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) - vsync = 7; - else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) - vsync = 7; - else /* custom */ - vsync = 10; - - if (!reduced) { - /* simplify the GTF calculation */ - /* 4) Minimum time of vertical sync + back porch interval (µs) - * default 550.0 - */ - int tmp1, tmp2; -#define CVT_MIN_VSYNC_BP 550 - /* 3) Nominal HSync width (% of line period) - default 8 */ -#define CVT_HSYNC_PERCENTAGE 8 - unsigned int hblank_percentage; - int vsyncandback_porch, vback_porch, hblank; - - /* estimated the horizontal period */ - tmp1 = HV_FACTOR * 1000000 - - CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; - tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + - interlace; - hperiod = tmp1 * 2 / (tmp2 * vfieldrate); - - tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; - /* 9. Find number of lines in sync + backporch */ - if (tmp1 < (vsync + CVT_MIN_V_PORCH)) - vsyncandback_porch = vsync + CVT_MIN_V_PORCH; - else - vsyncandback_porch = tmp1; - /* 10. Find number of lines in back porch */ - vback_porch = vsyncandback_porch - vsync; - drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + - vsyncandback_porch + CVT_MIN_V_PORCH; - /* 5) Definition of Horizontal blanking time limitation */ - /* Gradient (%/kHz) - default 600 */ -#define CVT_M_FACTOR 600 - /* Offset (%) - default 40 */ -#define CVT_C_FACTOR 40 - /* Blanking time scaling factor - default 128 */ -#define CVT_K_FACTOR 128 - /* Scaling factor weighting - default 20 */ -#define CVT_J_FACTOR 20 -#define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) -#define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ - CVT_J_FACTOR) - /* 12. Find ideal blanking duty cycle from formula */ - hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * - hperiod / 1000; - /* 13. Blanking time */ - if (hblank_percentage < 20 * HV_FACTOR) - hblank_percentage = 20 * HV_FACTOR; - hblank = drm_mode->hdisplay * hblank_percentage / - (100 * HV_FACTOR - hblank_percentage); - hblank -= hblank % (2 * CVT_H_GRANULARITY); - /* 14. find the total pixes per line */ - drm_mode->htotal = drm_mode->hdisplay + hblank; - drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; - drm_mode->hsync_start = drm_mode->hsync_end - - (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; - drm_mode->hsync_start += CVT_H_GRANULARITY - - drm_mode->hsync_start % CVT_H_GRANULARITY; - /* fill the Vsync values */ - drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; - drm_mode->vsync_end = drm_mode->vsync_start + vsync; - } else { - /* Reduced blanking */ - /* Minimum vertical blanking interval time (µs)- default 460 */ -#define CVT_RB_MIN_VBLANK 460 - /* Fixed number of clocks for horizontal sync */ -#define CVT_RB_H_SYNC 32 - /* Fixed number of clocks for horizontal blanking */ -#define CVT_RB_H_BLANK 160 - /* Fixed number of lines for vertical front porch - default 3*/ -#define CVT_RB_VFPORCH 3 - int vbilines; - int tmp1, tmp2; - /* 8. Estimate Horizontal period. */ - tmp1 = HV_FACTOR * 1000000 - - CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; - tmp2 = vdisplay_rnd + 2 * vmargin; - hperiod = tmp1 / (tmp2 * vfieldrate); - /* 9. Find number of lines in vertical blanking */ - vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; - /* 10. Check if vertical blanking is sufficient */ - if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) - vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; - /* 11. Find total number of lines in vertical field */ - drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; - /* 12. Find total number of pixels in a line */ - drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; - /* Fill in HSync values */ - drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; - drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; - /* Fill in VSync values */ - drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; - drm_mode->vsync_end = drm_mode->vsync_start + vsync; - } - /* 15/13. Find pixel clock frequency (kHz for xf86) */ - drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod; - drm_mode->clock -= drm_mode->clock % CVT_CLOCK_STEP; - /* 18/16. Find actual vertical frame frequency */ - /* ignore - just set the mode flag for interlaced */ - if (interlaced) { - drm_mode->vtotal *= 2; - drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; - } - /* Fill the mode line name */ - drm_mode_set_name(drm_mode); - if (reduced) - drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | - DRM_MODE_FLAG_NVSYNC); - else - drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | - DRM_MODE_FLAG_NHSYNC); - - return drm_mode; -} -EXPORT_SYMBOL(drm_cvt_mode); - -/** - * drm_gtf_mode_complex - create the modeline based on full GTF algorithm - * - * @dev :drm device - * @hdisplay :hdisplay size - * @vdisplay :vdisplay size - * @vrefresh :vrefresh rate. - * @interlaced :whether the interlace is supported - * @margins :desired margin size - * @GTF_[MCKJ] :extended GTF formula parameters - * - * LOCKING. - * none. - * - * return the modeline based on full GTF algorithm. - * - * GTF feature blocks specify C and J in multiples of 0.5, so we pass them - * in here multiplied by two. For a C of 40, pass in 80. - */ -struct drm_display_mode * -drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, - int vrefresh, bool interlaced, int margins, - int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) -{ /* 1) top/bottom margin size (% of height) - default: 1.8, */ -#define GTF_MARGIN_PERCENTAGE 18 - /* 2) character cell horizontal granularity (pixels) - default 8 */ -#define GTF_CELL_GRAN 8 - /* 3) Minimum vertical porch (lines) - default 3 */ -#define GTF_MIN_V_PORCH 1 - /* width of vsync in lines */ -#define V_SYNC_RQD 3 - /* width of hsync as % of total line */ -#define H_SYNC_PERCENT 8 - /* min time of vsync + back porch (microsec) */ -#define MIN_VSYNC_PLUS_BP 550 - /* C' and M' are part of the Blanking Duty Cycle computation */ -#define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) -#define GTF_M_PRIME (GTF_K * GTF_M / 256) - struct drm_display_mode *drm_mode; - unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; - int top_margin, bottom_margin; - int interlace; - unsigned int hfreq_est; - int vsync_plus_bp, vback_porch; - unsigned int vtotal_lines, vfieldrate_est, hperiod; - unsigned int vfield_rate, vframe_rate; - int left_margin, right_margin; - unsigned int total_active_pixels, ideal_duty_cycle; - unsigned int hblank, total_pixels, pixel_freq; - int hsync, hfront_porch, vodd_front_porch_lines; - unsigned int tmp1, tmp2; - - drm_mode = drm_mode_create(dev); - if (!drm_mode) - return NULL; - - /* 1. In order to give correct results, the number of horizontal - * pixels requested is first processed to ensure that it is divisible - * by the character size, by rounding it to the nearest character - * cell boundary: - */ - hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; - hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; - - /* 2. If interlace is requested, the number of vertical lines assumed - * by the calculation must be halved, as the computation calculates - * the number of vertical lines per field. - */ - if (interlaced) - vdisplay_rnd = vdisplay / 2; - else - vdisplay_rnd = vdisplay; - - /* 3. Find the frame rate required: */ - if (interlaced) - vfieldrate_rqd = vrefresh * 2; - else - vfieldrate_rqd = vrefresh; - - /* 4. Find number of lines in Top margin: */ - top_margin = 0; - if (margins) - top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / - 1000; - /* 5. Find number of lines in bottom margin: */ - bottom_margin = top_margin; - - /* 6. If interlace is required, then set variable interlace: */ - if (interlaced) - interlace = 1; - else - interlace = 0; - - /* 7. Estimate the Horizontal frequency */ - { - tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; - tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * - 2 + interlace; - hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; - } - - /* 8. Find the number of lines in V sync + back porch */ - /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ - vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; - vsync_plus_bp = (vsync_plus_bp + 500) / 1000; - /* 9. Find the number of lines in V back porch alone: */ - vback_porch = vsync_plus_bp - V_SYNC_RQD; - /* 10. Find the total number of lines in Vertical field period: */ - vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + - vsync_plus_bp + GTF_MIN_V_PORCH; - /* 11. Estimate the Vertical field frequency: */ - vfieldrate_est = hfreq_est / vtotal_lines; - /* 12. Find the actual horizontal period: */ - hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); - - /* 13. Find the actual Vertical field frequency: */ - vfield_rate = hfreq_est / vtotal_lines; - /* 14. Find the Vertical frame frequency: */ - if (interlaced) - vframe_rate = vfield_rate / 2; - else - vframe_rate = vfield_rate; - /* 15. Find number of pixels in left margin: */ - if (margins) - left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / - 1000; - else - left_margin = 0; - - /* 16.Find number of pixels in right margin: */ - right_margin = left_margin; - /* 17.Find total number of active pixels in image and left and right */ - total_active_pixels = hdisplay_rnd + left_margin + right_margin; - /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ - ideal_duty_cycle = GTF_C_PRIME * 1000 - - (GTF_M_PRIME * 1000000 / hfreq_est); - /* 19.Find the number of pixels in the blanking time to the nearest - * double character cell: */ - hblank = total_active_pixels * ideal_duty_cycle / - (100000 - ideal_duty_cycle); - hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); - hblank = hblank * 2 * GTF_CELL_GRAN; - /* 20.Find total number of pixels: */ - total_pixels = total_active_pixels + hblank; - /* 21.Find pixel clock frequency: */ - pixel_freq = total_pixels * hfreq_est / 1000; - /* Stage 1 computations are now complete; I should really pass - * the results to another function and do the Stage 2 computations, - * but I only need a few more values so I'll just append the - * computations here for now */ - /* 17. Find the number of pixels in the horizontal sync period: */ - hsync = H_SYNC_PERCENT * total_pixels / 100; - hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; - hsync = hsync * GTF_CELL_GRAN; - /* 18. Find the number of pixels in horizontal front porch period */ - hfront_porch = hblank / 2 - hsync; - /* 36. Find the number of lines in the odd front porch period: */ - vodd_front_porch_lines = GTF_MIN_V_PORCH ; - - /* finally, pack the results in the mode struct */ - drm_mode->hdisplay = hdisplay_rnd; - drm_mode->hsync_start = hdisplay_rnd + hfront_porch; - drm_mode->hsync_end = drm_mode->hsync_start + hsync; - drm_mode->htotal = total_pixels; - drm_mode->vdisplay = vdisplay_rnd; - drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; - drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; - drm_mode->vtotal = vtotal_lines; - - drm_mode->clock = pixel_freq; - - if (interlaced) { - drm_mode->vtotal *= 2; - drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; - } - - drm_mode_set_name(drm_mode); - if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) - drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; - else - drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; - - return drm_mode; -} -EXPORT_SYMBOL(drm_gtf_mode_complex); - -/** - * drm_gtf_mode - create the modeline based on GTF algorithm - * - * @dev :drm device - * @hdisplay :hdisplay size - * @vdisplay :vdisplay size - * @vrefresh :vrefresh rate. - * @interlaced :whether the interlace is supported - * @margins :whether the margin is supported - * - * LOCKING. - * none. - * - * return the modeline based on GTF algorithm - * - * This function is to create the modeline based on the GTF algorithm. - * Generalized Timing Formula is derived from: - * GTF Spreadsheet by Andy Morrish (1/5/97) - * available at http://www.vesa.org - * - * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. - * What I have done is to translate it by using integer calculation. - * I also refer to the function of fb_get_mode in the file of - * drivers/video/fbmon.c - * - * Standard GTF parameters: - * M = 600 - * C = 40 - * K = 128 - * J = 20 - */ -struct drm_display_mode * -drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, - bool lace, int margins) -{ - return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, lace, - margins, 600, 40 * 2, 128, 20 * 2); -} -EXPORT_SYMBOL(drm_gtf_mode); - -/** - * 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) -{ - bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); - - snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", - mode->hdisplay, mode->vdisplay, - interlaced ? "i" : ""); -} -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_hsync - get the hsync of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @modes's hsync rate in kHz, rounded to the nearest int. - */ -int drm_mode_hsync(const struct drm_display_mode *mode) -{ - unsigned int calc_val; - - if (mode->hsync) - return mode->hsync; - - if (mode->htotal < 0) - return 0; - - calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */ - calc_val += 500; /* round to 1000Hz */ - calc_val /= 1000; /* truncate to kHz */ - - return calc_val; -} -EXPORT_SYMBOL(drm_mode_hsync); - -/** - * drm_mode_vrefresh - get the vrefresh of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's vrefresh rate in Hz or calculate it if necessary. - * - * FIXME: why is this needed? shouldn't vrefresh be set already? - * - * RETURNS: - * Vertical refresh rate. It will be the result of actual value plus 0.5. - * If it is 70.288, it will return 70Hz. - * If it is 59.6, it will return 60Hz. - */ -int drm_mode_vrefresh(const 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) { - int vtotal; - vtotal = mode->vtotal; - /* work out vrefresh the value will be x1000 */ - calc_val = (mode->clock * 1000); - calc_val /= mode->htotal; - refresh = (calc_val + vtotal / 2) / vtotal; - - 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; - } - } - - 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_copy - copy the mode - * @dst: mode to overwrite - * @src: mode to copy - * - * LOCKING: - * None. - * - * Copy an existing mode into another mode, preserving the object id - * of the destination mode. - */ -void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) -{ - int id = dst->base.id; - - *dst = *src; - dst->base.id = id; - INIT_LIST_HEAD(&dst->head); -} -EXPORT_SYMBOL(drm_mode_copy); - -/** - * 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, - const struct drm_display_mode *mode) -{ - struct drm_display_mode *nmode; - - nmode = drm_mode_create(dev); - if (!nmode) - return NULL; - - drm_mode_copy(nmode, mode); - - 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_KMS("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 - * @priv: unused - * @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(void *priv, 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; -} - -/** - * 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(NULL, 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; - /* Merge type bits together */ - mode->type |= pmode->type; - 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); - -/** - * drm_mode_parse_command_line_for_connector - parse command line for connector - * @mode_option - per connector mode option - * @connector - connector to parse line for - * - * This parses the connector specific then generic command lines for - * modes and options to configure the connector. - * - * This uses the same parameters as the fb modedb.c, except for extra - * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] - * - * enable/enable Digital/disable bit at the end - */ -bool drm_mode_parse_command_line_for_connector(const char *mode_option, - struct drm_connector *connector, - struct drm_cmdline_mode *mode) -{ - const char *name; - unsigned int namelen; - bool res_specified = false, bpp_specified = false, refresh_specified = false; - unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; - bool yres_specified = false, cvt = false, rb = false; - bool interlace = false, margins = false, was_digit = false; - int i; - enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; - -#ifdef CONFIG_FB - if (!mode_option) - mode_option = fb_mode_option; -#endif - - if (!mode_option) { - mode->specified = false; - return false; - } - - name = mode_option; - namelen = strlen(name); - for (i = namelen-1; i >= 0; i--) { - switch (name[i]) { - case '@': - if (!refresh_specified && !bpp_specified && - !yres_specified && !cvt && !rb && was_digit) { - refresh = simple_strtol(&name[i+1], NULL, 10); - refresh_specified = true; - was_digit = false; - } else - goto done; - break; - case '-': - if (!bpp_specified && !yres_specified && !cvt && - !rb && was_digit) { - bpp = simple_strtol(&name[i+1], NULL, 10); - bpp_specified = true; - was_digit = false; - } else - goto done; - break; - case 'x': - if (!yres_specified && was_digit) { - yres = simple_strtol(&name[i+1], NULL, 10); - yres_specified = true; - was_digit = false; - } else - goto done; - case '0' ... '9': - was_digit = true; - break; - case 'M': - if (yres_specified || cvt || was_digit) - goto done; - cvt = true; - break; - case 'R': - if (yres_specified || cvt || rb || was_digit) - goto done; - rb = true; - break; - case 'm': - if (cvt || yres_specified || was_digit) - goto done; - margins = true; - break; - case 'i': - if (cvt || yres_specified || was_digit) - goto done; - interlace = true; - break; - case 'e': - if (yres_specified || bpp_specified || refresh_specified || - was_digit || (force != DRM_FORCE_UNSPECIFIED)) - goto done; - - force = DRM_FORCE_ON; - break; - case 'D': - if (yres_specified || bpp_specified || refresh_specified || - was_digit || (force != DRM_FORCE_UNSPECIFIED)) - goto done; - - if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && - (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) - force = DRM_FORCE_ON; - else - force = DRM_FORCE_ON_DIGITAL; - break; - case 'd': - if (yres_specified || bpp_specified || refresh_specified || - was_digit || (force != DRM_FORCE_UNSPECIFIED)) - goto done; - - force = DRM_FORCE_OFF; - break; - default: - goto done; - } - } - - if (i < 0 && yres_specified) { - char *ch; - xres = simple_strtol(name, &ch, 10); - if ((ch != NULL) && (*ch == 'x')) - res_specified = true; - else - i = ch - name; - } else if (!yres_specified && was_digit) { - /* catch mode that begins with digits but has no 'x' */ - i = 0; - } -done: - if (i >= 0) { - printk(KERN_WARNING - "parse error at position %i in video mode '%s'\n", - i, name); - mode->specified = false; - return false; - } - - if (res_specified) { - mode->specified = true; - mode->xres = xres; - mode->yres = yres; - } - - if (refresh_specified) { - mode->refresh_specified = true; - mode->refresh = refresh; - } - - if (bpp_specified) { - mode->bpp_specified = true; - mode->bpp = bpp; - } - mode->rb = rb; - mode->cvt = cvt; - mode->interlace = interlace; - mode->margins = margins; - mode->force = force; - - return true; -} -EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); - -struct drm_display_mode * -drm_mode_create_from_cmdline_mode(struct drm_device *dev, - struct drm_cmdline_mode *cmd) -{ - struct drm_display_mode *mode; - - if (cmd->cvt) - mode = drm_cvt_mode(dev, - cmd->xres, cmd->yres, - cmd->refresh_specified ? cmd->refresh : 60, - cmd->rb, cmd->interlace, - cmd->margins); - else - mode = drm_gtf_mode(dev, - cmd->xres, cmd->yres, - cmd->refresh_specified ? cmd->refresh : 60, - cmd->interlace, - cmd->margins); - if (!mode) - return NULL; - - drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); - return mode; -} -EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |