diff options
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 875 |
1 files changed, 559 insertions, 316 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 6d81a02463a..bedf1894e17 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1,9 +1,4 @@ /* - * The list_sort function is (presumably) licensed under the GPL (see the - * top level "COPYING" file for details). - * - * The remainder of this file is: - * * Copyright © 1997-2003 by The XFree86 Project, Inc. * Copyright © 2007 Dave Airlie * Copyright © 2007-2008 Intel Corporation @@ -36,21 +31,23 @@ */ #include <linux/list.h> -#include "drmP.h" -#include "drm.h" -#include "drm_crtc.h" +#include <linux/list_sort.h> +#include <linux/export.h> +#include <drm/drmP.h> +#include <drm/drm_crtc.h> +#include <video/of_videomode.h> +#include <video/videomode.h> +#include <drm/drm_modes.h> + +#include "drm_crtc_internal.h" /** - * drm_mode_debug_printmodeline - debug print a mode - * @dev: DRM device + * drm_mode_debug_printmodeline - print a mode to dmesg * @mode: mode to print * - * LOCKING: - * None. - * * Describe @mode using DRM_DEBUG. */ -void drm_mode_debug_printmodeline(struct drm_display_mode *mode) +void drm_mode_debug_printmodeline(const 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", @@ -63,33 +60,97 @@ void drm_mode_debug_printmodeline(struct drm_display_mode *mode) EXPORT_SYMBOL(drm_mode_debug_printmodeline); /** - * drm_cvt_mode -create a modeline based on CVT algorithm + * drm_mode_create - create a new display mode * @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. + * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it + * and return it. + * + * Returns: + * Pointer to new mode on success, NULL on error. + */ +struct drm_display_mode *drm_mode_create(struct drm_device *dev) +{ + struct drm_display_mode *nmode; + + nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); + if (!nmode) + return NULL; + + if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { + kfree(nmode); + return NULL; + } + + return nmode; +} +EXPORT_SYMBOL(drm_mode_create); + +/** + * drm_mode_destroy - remove a mode + * @dev: DRM device + * @mode: mode to remove + * + * Release @mode's unique ID, then free it @mode structure itself using kfree. + */ +void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) +{ + if (!mode) + return; + + drm_mode_object_put(dev, &mode->base); + + kfree(mode); +} +EXPORT_SYMBOL(drm_mode_destroy); + +/** + * drm_mode_probed_add - add a mode to a connector's probed_mode list + * @connector: connector the new mode + * @mode: mode data * - * return the modeline based on CVT algorithm + * Add @mode to @connector's probed_mode list for later use. This list should + * then in a second step get filtered and all the modes actually supported by + * the hardware moved to the @connector's modes list. + */ +void drm_mode_probed_add(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); + + list_add_tail(&mode->head, &connector->probed_modes); +} +EXPORT_SYMBOL(drm_mode_probed_add); + +/** + * drm_cvt_mode -create a modeline based on the CVT algorithm + * @dev: drm device + * @hdisplay: hdisplay size + * @vdisplay: vdisplay size + * @vrefresh: vrefresh rate + * @reduced: whether to use reduced blanking + * @interlaced: whether to compute an interlaced mode + * @margins: whether to add margins (borders) * * 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.vesa.org/public/CVT/CVTd6r1.xls + * 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. + * + * Returns: + * The modeline based on the CVT algorithm stored in a drm_display_mode object. + * The display mode object is allocated with drm_mode_create(). Returns NULL + * when no mode could be allocated. */ -#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) { +#define HV_FACTOR 1000 /* 1) top/bottom margin size (% of height) - default: 1.8, */ #define CVT_MARGIN_PERCENTAGE 18 /* 2) character cell horizontal granularity (pixels) - default 8 */ @@ -255,15 +316,20 @@ struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, 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; + 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) + 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) @@ -272,43 +338,37 @@ struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, else drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NHSYNC); - if (interlaced) - drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; - return drm_mode; + return drm_mode; } EXPORT_SYMBOL(drm_cvt_mode); /** - * 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 + * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm + * @dev: drm device + * @hdisplay: hdisplay size + * @vdisplay: vdisplay size + * @vrefresh: vrefresh rate. + * @interlaced: whether to compute an interlaced mode + * @margins: desired margin (borders) size + * @GTF_M: extended GTF formula parameters + * @GTF_2C: extended GTF formula parameters + * @GTF_K: extended GTF formula parameters + * @GTF_2J: extended GTF formula parameters * - * 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 + * 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. * - * 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 + * Returns: + * The modeline based on the full GTF algorithm stored in a drm_display_mode object. + * The display mode object is allocated with drm_mode_create(). Returns NULL + * when no mode could be allocated. */ -struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, int hdisplay, - int vdisplay, int vrefresh, - bool interlaced, int margins) -{ - /* 1) top/bottom margin size (% of height) - default: 1.8, */ +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 @@ -320,17 +380,9 @@ struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, int hdisplay, #define H_SYNC_PERCENT 8 /* min time of vsync + back porch (microsec) */ #define MIN_VSYNC_PLUS_BP 550 - /* blanking formula gradient */ -#define GTF_M 600 - /* blanking formula offset */ -#define GTF_C 40 - /* blanking formula scaling factor */ -#define GTF_K 128 - /* blanking formula scaling factor */ -#define GTF_J 20 /* C' and M' are part of the Blanking Duty Cycle computation */ -#define GTF_C_PRIME (((GTF_C - GTF_J) * GTF_K / 256) + GTF_J) -#define GTF_M_PRIME (GTF_K * GTF_M / 256) +#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; @@ -464,104 +516,166 @@ struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, int hdisplay, drm_mode->clock = pixel_freq; - drm_mode_set_name(drm_mode); - drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; - 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); +EXPORT_SYMBOL(drm_gtf_mode_complex); + /** - * drm_mode_set_name - set the name on a mode - * @mode: name will be set in this mode + * drm_gtf_mode - create the modeline based on the GTF algorithm + * @dev: drm device + * @hdisplay: hdisplay size + * @vdisplay: vdisplay size + * @vrefresh: vrefresh rate. + * @interlaced: whether to compute an interlaced mode + * @margins: desired margin (borders) size + * + * return the modeline based on GTF algorithm * - * LOCKING: - * None. + * 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 * - * Set the name of @mode to a standard format. + * 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 + * + * Returns: + * The modeline based on the GTF algorithm stored in a drm_display_mode object. + * The display mode object is allocated with drm_mode_create(). Returns NULL + * when no mode could be allocated. */ -void drm_mode_set_name(struct drm_display_mode *mode) +struct drm_display_mode * +drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, + bool interlaced, int margins) { - snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d", mode->hdisplay, - mode->vdisplay); + return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, + interlaced, margins, + 600, 40 * 2, 128, 20 * 2); } -EXPORT_SYMBOL(drm_mode_set_name); +EXPORT_SYMBOL(drm_gtf_mode); +#ifdef CONFIG_VIDEOMODE_HELPERS /** - * 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. + * drm_display_mode_from_videomode - fill in @dmode using @vm, + * @vm: videomode structure to use as source + * @dmode: drm_display_mode structure to use as destination * - * Move all the modes from @head to @new. + * Fills out @dmode using the display mode specified in @vm. */ -void drm_mode_list_concat(struct list_head *head, struct list_head *new) +void drm_display_mode_from_videomode(const struct videomode *vm, + struct drm_display_mode *dmode) { - - struct list_head *entry, *tmp; - - list_for_each_safe(entry, tmp, head) { - list_move_tail(entry, new); - } + dmode->hdisplay = vm->hactive; + dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; + dmode->hsync_end = dmode->hsync_start + vm->hsync_len; + dmode->htotal = dmode->hsync_end + vm->hback_porch; + + dmode->vdisplay = vm->vactive; + dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; + dmode->vsync_end = dmode->vsync_start + vm->vsync_len; + dmode->vtotal = dmode->vsync_end + vm->vback_porch; + + dmode->clock = vm->pixelclock / 1000; + + dmode->flags = 0; + if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) + dmode->flags |= DRM_MODE_FLAG_PHSYNC; + else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) + dmode->flags |= DRM_MODE_FLAG_NHSYNC; + if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) + dmode->flags |= DRM_MODE_FLAG_PVSYNC; + else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) + dmode->flags |= DRM_MODE_FLAG_NVSYNC; + if (vm->flags & DISPLAY_FLAGS_INTERLACED) + dmode->flags |= DRM_MODE_FLAG_INTERLACE; + if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) + dmode->flags |= DRM_MODE_FLAG_DBLSCAN; + if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) + dmode->flags |= DRM_MODE_FLAG_DBLCLK; + drm_mode_set_name(dmode); } -EXPORT_SYMBOL(drm_mode_list_concat); +EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); +#ifdef CONFIG_OF /** - * drm_mode_width - get the width of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's width (hdisplay) value. + * of_get_drm_display_mode - get a drm_display_mode from devicetree + * @np: device_node with the timing specification + * @dmode: will be set to the return value + * @index: index into the list of display timings in devicetree * - * FIXME: is this needed? + * This function is expensive and should only be used, if only one mode is to be + * read from DT. To get multiple modes start with of_get_display_timings and + * work with that instead. * - * RETURNS: - * @mode->hdisplay + * Returns: + * 0 on success, a negative errno code when no of videomode node was found. */ -int drm_mode_width(struct drm_display_mode *mode) +int of_get_drm_display_mode(struct device_node *np, + struct drm_display_mode *dmode, int index) { - return mode->hdisplay; + struct videomode vm; + int ret; + ret = of_get_videomode(np, &vm, index); + if (ret) + return ret; + + drm_display_mode_from_videomode(&vm, dmode); + + pr_debug("%s: got %dx%d display mode from %s\n", + of_node_full_name(np), vm.hactive, vm.vactive, np->name); + drm_mode_debug_printmodeline(dmode); + + return 0; } -EXPORT_SYMBOL(drm_mode_width); +EXPORT_SYMBOL_GPL(of_get_drm_display_mode); +#endif /* CONFIG_OF */ +#endif /* CONFIG_VIDEOMODE_HELPERS */ /** - * drm_mode_height - get the height of a mode - * @mode: mode - * - * LOCKING: - * None. - * - * Return @mode's height (vdisplay) value. - * - * FIXME: is this needed? + * drm_mode_set_name - set the name on a mode + * @mode: name will be set in this mode * - * RETURNS: - * @mode->vdisplay + * Set the name of @mode to a standard format which is <hdisplay>x<vdisplay> + * with an optional 'i' suffix for interlaced modes. */ -int drm_mode_height(struct drm_display_mode *mode) +void drm_mode_set_name(struct drm_display_mode *mode) { - return mode->vdisplay; + 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_height); +EXPORT_SYMBOL(drm_mode_set_name); /** 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. + * Returns: + * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the + * value first if it is not yet set. */ -int drm_mode_hsync(struct drm_display_mode *mode) +int drm_mode_hsync(const struct drm_display_mode *mode) { unsigned int calc_val; @@ -583,19 +697,11 @@ 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. + * Returns: + * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the + * value first if it is not yet set. */ -int drm_mode_vrefresh(struct drm_display_mode *mode) +int drm_mode_vrefresh(const struct drm_display_mode *mode) { int refresh = 0; unsigned int calc_val; @@ -622,20 +728,24 @@ int drm_mode_vrefresh(struct drm_display_mode *mode) EXPORT_SYMBOL(drm_mode_vrefresh); /** - * drm_mode_set_crtcinfo - set CRTC modesetting parameters + * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters * @p: mode - * @adjust_flags: unused? (FIXME) + * @adjust_flags: a combination of adjustment flags * - * LOCKING: - * None. + * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. * - * Setup the CRTC modesetting parameters for @p, adjusting if necessary. + * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of + * interlaced modes. + * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for + * buffers containing two eyes (only adjust the timings when needed, eg. for + * "frame packing" or "side by side full"). */ 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_clock = p->clock; p->crtc_hdisplay = p->hdisplay; p->crtc_hsync_start = p->hsync_start; p->crtc_hsync_end = p->hsync_end; @@ -653,8 +763,6 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) p->crtc_vsync_end /= 2; p->crtc_vtotal /= 2; } - - p->crtc_vtotal |= 1; } if (p->flags & DRM_MODE_FLAG_DBLSCAN) { @@ -671,41 +779,68 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) p->crtc_vtotal *= p->vscan; } + if (adjust_flags & CRTC_STEREO_DOUBLE) { + unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; + + switch (layout) { + case DRM_MODE_FLAG_3D_FRAME_PACKING: + p->crtc_clock *= 2; + p->crtc_vdisplay += p->crtc_vtotal; + p->crtc_vsync_start += p->crtc_vtotal; + p->crtc_vsync_end += p->crtc_vtotal; + p->crtc_vtotal += p->crtc_vtotal; + break; + } + } + 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 + * + * Copy an existing mode into another mode, preserving the object id and + * list head of the destination mode. + */ +void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) +{ + int id = dst->base.id; + struct list_head head = dst->head; + + *dst = *src; + dst->base.id = id; + dst->head = head; +} +EXPORT_SYMBOL(drm_mode_copy); /** * drm_mode_duplicate - allocate and duplicate an existing mode - * @m: mode to duplicate - * - * LOCKING: - * None. + * @dev: drm_device to allocate the duplicated mode for + * @mode: mode to duplicate * * 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. + * + * Returns: + * Pointer to duplicated mode on success, NULL on error. */ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, - struct drm_display_mode *mode) + const 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); + drm_mode_copy(nmode, mode); + return nmode; } EXPORT_SYMBOL(drm_mode_duplicate); @@ -715,15 +850,12 @@ EXPORT_SYMBOL(drm_mode_duplicate); * @mode1: first mode * @mode2: second mode * - * LOCKING: - * None. - * * Check to see if @mode1 and @mode2 are equivalent. * - * RETURNS: + * Returns: * True if the modes are equal, false otherwise. */ -bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2) +bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) { /* do clock check convert to PICOS so fb modes get matched * the same */ @@ -733,6 +865,28 @@ bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mod } else if (mode1->clock != mode2->clock) return false; + if ((mode1->flags & DRM_MODE_FLAG_3D_MASK) != + (mode2->flags & DRM_MODE_FLAG_3D_MASK)) + return false; + + return drm_mode_equal_no_clocks_no_stereo(mode1, mode2); +} +EXPORT_SYMBOL(drm_mode_equal); + +/** + * drm_mode_equal_no_clocks_no_stereo - test modes for equality + * @mode1: first mode + * @mode2: second mode + * + * Check to see if @mode1 and @mode2 are equivalent, but + * don't check the pixel clocks nor the stereo layout. + * + * Returns: + * True if the modes are equal, false otherwise. + */ +bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, + const struct drm_display_mode *mode2) +{ if (mode1->hdisplay == mode2->hdisplay && mode1->hsync_start == mode2->hsync_start && mode1->hsync_end == mode2->hsync_end && @@ -743,12 +897,13 @@ bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mod mode1->vsync_end == mode2->vsync_end && mode1->vtotal == mode2->vtotal && mode1->vscan == mode2->vscan && - mode1->flags == mode2->flags) + (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == + (mode2->flags & ~DRM_MODE_FLAG_3D_MASK)) return true; return false; } -EXPORT_SYMBOL(drm_mode_equal); +EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); /** * drm_mode_validate_size - make sure modes adhere to size constraints @@ -756,25 +911,19 @@ EXPORT_SYMBOL(drm_mode_equal); * @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. + * This function is a helper which can be used to validate modes against size + * limitations of the DRM device/connector. If a mode is too big its status + * memeber is updated with the appropriate validation failure code. The list + * itself is not changed. */ void drm_mode_validate_size(struct drm_device *dev, struct list_head *mode_list, - int maxX, int maxY, int maxPitch) + int maxX, int maxY) { 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; @@ -785,54 +934,15 @@ void drm_mode_validate_size(struct drm_device *dev, 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. + * This helper function can be used to prune a display mode list after + * validation has been completed. All modes who's status is not MODE_OK will be + * removed from the list, and if @verbose the status code and mode name is also + * printed to dmesg. */ void drm_mode_prune_invalid(struct drm_device *dev, struct list_head *mode_list, bool verbose) @@ -855,20 +965,18 @@ 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: + * 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) +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); @@ -881,122 +989,48 @@ static int drm_mode_compare(struct list_head *lh_a, struct list_head *lh_b) 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; - } + diff = b->vrefresh - a->vrefresh; + if (diff) + return diff; - head->next = list; - head->prev = list->prev; - list->prev->next = head; - list->prev = head; + diff = b->clock - a->clock; + return diff; } /** * drm_mode_sort - sort mode list - * @mode_list: list to sort + * @mode_list: list of drm_display_mode structures to sort * - * LOCKING: - * Caller must hold a lock protecting @mode_list. - * - * Sort @mode_list by favorability, putting good modes first. + * Sort @mode_list by favorability, moving good modes to the head of the list. */ void drm_mode_sort(struct list_head *mode_list) { - list_sort(mode_list, drm_mode_compare); + 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. + * @merge_type_bits: whether to merge or overright type bits. * * 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. + * list and only adds different/new modes. + * + * This is just a helper functions doesn't validate any modes itself and also + * doesn't prune any invalid modes. Callers need to do that themselves. */ -void drm_mode_connector_list_update(struct drm_connector *connector) +void drm_mode_connector_list_update(struct drm_connector *connector, + bool merge_type_bits) { struct drm_display_mode *mode; struct drm_display_mode *pmode, *pt; int found_it; + WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); + list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { found_it = 0; @@ -1007,7 +1041,10 @@ void drm_mode_connector_list_update(struct drm_connector *connector) /* if equal delete the probed mode */ mode->status = pmode->status; /* Merge type bits together */ - mode->type |= pmode->type; + if (merge_type_bits) + mode->type |= pmode->type; + else + mode->type = pmode->type; list_del(&pmode->head); drm_mode_destroy(connector->dev, pmode); break; @@ -1020,3 +1057,209 @@ void drm_mode_connector_list_update(struct drm_connector *connector) } } EXPORT_SYMBOL(drm_mode_connector_list_update); + +/** + * drm_mode_parse_command_line_for_connector - parse command line modeline for connector + * @mode_option: optional per connector mode option + * @connector: connector to parse modeline for + * @mode: preallocated drm_cmdline_mode structure to fill out + * + * This parses @mode_option command line modeline for modes and options to + * configure the connector. If @mode_option is NULL the default command line + * modeline in fb_mode_option will be parsed instead. + * + * This uses the same parameters as the fb modedb.c, except for an extra + * force-enable, force-enable-digital and force-disable bit at the end: + * + * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] + * + * The intermediate drm_cmdline_mode structure is required to store additional + * options from the command line modline like the force-enabel/disable flag. + * + * Returns: + * True if a valid modeline has been parsed, false otherwise. + */ +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; + break; + 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); + +/** + * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode + * @dev: DRM device to create the new mode for + * @cmd: input command line modeline + * + * Returns: + * Pointer to converted mode on success, NULL on error. + */ +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); |