![Dave Airlie](/assets/img/avatar_default.png)
The fbdev layer in the kms code should act like a consumer of the kms services and avoid having relying on information being store in the kms core structures in order for it to work. This patch a) removes the info pointer/psuedo palette from the core drm_framebuffer structure and moves it to the fbdev helper layer, it also removes the core drm keeping a list of kernel kms fbdevs. b) migrated all the fb helper functions out of the crtc helper file into the fb helper file. c) pushed the fb probing/hotplug control into the driver d) makes the surface sizes into a structure for ease of passing This changes the intel/radeon/nouveau drivers to use the new helper. Signed-off-by: Dave Airlie <airlied@redhat.com>
1372 lines
35 KiB
C
1372 lines
35 KiB
C
/*
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* Copyright (c) 2006-2009 Red Hat Inc.
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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*
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* DRM framebuffer helper functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*
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* Authors:
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* Dave Airlie <airlied@linux.ie>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/kernel.h>
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#include <linux/sysrq.h>
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#include <linux/fb.h>
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#include "drmP.h"
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#include "drm_crtc.h"
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#include "drm_fb_helper.h"
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#include "drm_crtc_helper.h"
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MODULE_AUTHOR("David Airlie, Jesse Barnes");
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MODULE_DESCRIPTION("DRM KMS helper");
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MODULE_LICENSE("GPL and additional rights");
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static LIST_HEAD(kernel_fb_helper_list);
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int drm_fb_helper_add_connector(struct drm_connector *connector)
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{
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connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
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if (!connector->fb_helper_private)
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return -ENOMEM;
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return 0;
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}
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EXPORT_SYMBOL(drm_fb_helper_add_connector);
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/**
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* drm_fb_helper_connector_parse_command_line - parse command line for connector
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* @connector - connector to parse line for
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* @mode_option - per connector mode option
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*
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* This parses the connector specific then generic command lines for
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* modes and options to configure the connector.
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*
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* This uses the same parameters as the fb modedb.c, except for extra
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* <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
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*
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* enable/enable Digital/disable bit at the end
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*/
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static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector,
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const char *mode_option)
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{
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const char *name;
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unsigned int namelen;
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int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
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unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0;
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int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
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int i;
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enum drm_connector_force force = DRM_FORCE_UNSPECIFIED;
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struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
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struct drm_fb_helper_cmdline_mode *cmdline_mode;
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if (!fb_help_conn)
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return false;
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cmdline_mode = &fb_help_conn->cmdline_mode;
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if (!mode_option)
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mode_option = fb_mode_option;
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if (!mode_option) {
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cmdline_mode->specified = false;
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return false;
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}
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name = mode_option;
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namelen = strlen(name);
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for (i = namelen-1; i >= 0; i--) {
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switch (name[i]) {
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case '@':
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namelen = i;
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if (!refresh_specified && !bpp_specified &&
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!yres_specified) {
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refresh = simple_strtol(&name[i+1], NULL, 10);
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refresh_specified = 1;
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if (cvt || rb)
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cvt = 0;
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} else
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goto done;
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break;
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case '-':
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namelen = i;
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if (!bpp_specified && !yres_specified) {
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bpp = simple_strtol(&name[i+1], NULL, 10);
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bpp_specified = 1;
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if (cvt || rb)
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cvt = 0;
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} else
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goto done;
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break;
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case 'x':
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if (!yres_specified) {
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yres = simple_strtol(&name[i+1], NULL, 10);
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yres_specified = 1;
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} else
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goto done;
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case '0' ... '9':
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break;
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case 'M':
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if (!yres_specified)
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cvt = 1;
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break;
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case 'R':
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if (!cvt)
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rb = 1;
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break;
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case 'm':
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if (!cvt)
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margins = 1;
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break;
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case 'i':
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if (!cvt)
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interlace = 1;
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break;
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case 'e':
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force = DRM_FORCE_ON;
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break;
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case 'D':
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if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) &&
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(connector->connector_type != DRM_MODE_CONNECTOR_HDMIB))
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force = DRM_FORCE_ON;
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else
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force = DRM_FORCE_ON_DIGITAL;
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break;
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case 'd':
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force = DRM_FORCE_OFF;
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break;
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default:
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goto done;
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}
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}
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if (i < 0 && yres_specified) {
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xres = simple_strtol(name, NULL, 10);
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res_specified = 1;
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}
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done:
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DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
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drm_get_connector_name(connector), xres, yres,
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(refresh) ? refresh : 60, (rb) ? " reduced blanking" :
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"", (margins) ? " with margins" : "", (interlace) ?
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" interlaced" : "");
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if (force) {
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const char *s;
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switch (force) {
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case DRM_FORCE_OFF: s = "OFF"; break;
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case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break;
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default:
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case DRM_FORCE_ON: s = "ON"; break;
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}
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DRM_INFO("forcing %s connector %s\n",
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drm_get_connector_name(connector), s);
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connector->force = force;
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}
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if (res_specified) {
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cmdline_mode->specified = true;
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cmdline_mode->xres = xres;
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cmdline_mode->yres = yres;
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}
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if (refresh_specified) {
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cmdline_mode->refresh_specified = true;
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cmdline_mode->refresh = refresh;
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}
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if (bpp_specified) {
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cmdline_mode->bpp_specified = true;
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cmdline_mode->bpp = bpp;
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}
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cmdline_mode->rb = rb ? true : false;
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cmdline_mode->cvt = cvt ? true : false;
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cmdline_mode->interlace = interlace ? true : false;
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return true;
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}
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int drm_fb_helper_parse_command_line(struct drm_device *dev)
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{
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struct drm_connector *connector;
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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char *option = NULL;
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/* do something on return - turn off connector maybe */
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if (fb_get_options(drm_get_connector_name(connector), &option))
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continue;
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drm_fb_helper_connector_parse_command_line(connector, option);
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}
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return 0;
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}
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bool drm_fb_helper_force_kernel_mode(void)
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{
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int i = 0;
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bool ret, error = false;
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struct drm_fb_helper *helper;
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if (list_empty(&kernel_fb_helper_list))
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return false;
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list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
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for (i = 0; i < helper->crtc_count; i++) {
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struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
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ret = drm_crtc_helper_set_config(mode_set);
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if (ret)
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error = true;
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}
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}
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return error;
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}
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int drm_fb_helper_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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return drm_fb_helper_force_kernel_mode();
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return 0;
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}
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EXPORT_SYMBOL(drm_fb_helper_panic);
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static struct notifier_block paniced = {
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.notifier_call = drm_fb_helper_panic,
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};
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/**
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* drm_fb_helper_restore - restore the framebuffer console (kernel) config
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*
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* Restore's the kernel's fbcon mode, used for lastclose & panic paths.
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*/
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void drm_fb_helper_restore(void)
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{
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bool ret;
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ret = drm_fb_helper_force_kernel_mode();
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if (ret == true)
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DRM_ERROR("Failed to restore crtc configuration\n");
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}
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EXPORT_SYMBOL(drm_fb_helper_restore);
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#ifdef CONFIG_MAGIC_SYSRQ
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static void drm_fb_helper_restore_work_fn(struct work_struct *ignored)
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{
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drm_fb_helper_restore();
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}
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static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn);
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static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3)
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{
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schedule_work(&drm_fb_helper_restore_work);
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}
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static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = {
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.handler = drm_fb_helper_sysrq,
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.help_msg = "force-fb(V)",
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.action_msg = "Restore framebuffer console",
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};
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#else
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static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { };
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#endif
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static void drm_fb_helper_on(struct fb_info *info)
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{
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struct drm_fb_helper *fb_helper = info->par;
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struct drm_device *dev = fb_helper->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, turn the crtc on then,
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* find all associated encoders and turn them on.
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*/
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for (i = 0; i < fb_helper->crtc_count; i++) {
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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 =
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crtc->helper_private;
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/* Only mess with CRTCs in this fb */
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if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
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!crtc->enabled)
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continue;
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mutex_lock(&dev->mode_config.mutex);
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crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
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mutex_unlock(&dev->mode_config.mutex);
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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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mutex_lock(&dev->mode_config.mutex);
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encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
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mutex_unlock(&dev->mode_config.mutex);
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}
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}
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}
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}
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}
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static void drm_fb_helper_off(struct fb_info *info, int dpms_mode)
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{
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struct drm_fb_helper *fb_helper = info->par;
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struct drm_device *dev = fb_helper->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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for (i = 0; i < fb_helper->crtc_count; i++) {
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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 =
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crtc->helper_private;
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/* Only mess with CRTCs in this fb */
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if (crtc->base.id != fb_helper->crtc_info[i].crtc_id ||
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!crtc->enabled)
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continue;
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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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mutex_lock(&dev->mode_config.mutex);
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encoder_funcs->dpms(encoder, dpms_mode);
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mutex_unlock(&dev->mode_config.mutex);
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}
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}
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mutex_lock(&dev->mode_config.mutex);
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crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
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mutex_unlock(&dev->mode_config.mutex);
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}
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}
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}
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int drm_fb_helper_blank(int blank, struct fb_info *info)
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{
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switch (blank) {
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/* Display: On; HSync: On, VSync: On */
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case FB_BLANK_UNBLANK:
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drm_fb_helper_on(info);
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break;
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/* Display: Off; HSync: On, VSync: On */
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case FB_BLANK_NORMAL:
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drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
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break;
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/* Display: Off; HSync: Off, VSync: On */
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case FB_BLANK_HSYNC_SUSPEND:
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drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY);
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break;
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/* Display: Off; HSync: On, VSync: Off */
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case FB_BLANK_VSYNC_SUSPEND:
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drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND);
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break;
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/* Display: Off; HSync: Off, VSync: Off */
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case FB_BLANK_POWERDOWN:
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drm_fb_helper_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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EXPORT_SYMBOL(drm_fb_helper_blank);
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static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper)
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{
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int i;
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for (i = 0; i < helper->crtc_count; i++)
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kfree(helper->crtc_info[i].mode_set.connectors);
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kfree(helper->crtc_info);
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}
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int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count)
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{
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struct drm_device *dev = helper->dev;
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struct drm_crtc *crtc;
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int ret = 0;
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int i;
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helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
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if (!helper->crtc_info)
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return -ENOMEM;
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helper->crtc_count = crtc_count;
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for (i = 0; i < crtc_count; i++) {
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helper->crtc_info[i].mode_set.connectors =
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kcalloc(max_conn_count,
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sizeof(struct drm_connector *),
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GFP_KERNEL);
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if (!helper->crtc_info[i].mode_set.connectors) {
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ret = -ENOMEM;
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goto out_free;
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}
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helper->crtc_info[i].mode_set.num_connectors = 0;
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}
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i = 0;
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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helper->crtc_info[i].crtc_id = crtc->base.id;
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helper->crtc_info[i].mode_set.crtc = crtc;
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i++;
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}
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helper->conn_limit = max_conn_count;
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return 0;
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out_free:
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drm_fb_helper_crtc_free(helper);
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return -ENOMEM;
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}
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EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
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static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
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u16 blue, u16 regno, struct fb_info *info)
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{
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struct drm_fb_helper *fb_helper = info->par;
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struct drm_framebuffer *fb = fb_helper->fb;
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int pindex;
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if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
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u32 *palette;
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u32 value;
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/* place color in psuedopalette */
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if (regno > 16)
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return -EINVAL;
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palette = (u32 *)info->pseudo_palette;
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red >>= (16 - info->var.red.length);
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green >>= (16 - info->var.green.length);
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blue >>= (16 - info->var.blue.length);
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value = (red << info->var.red.offset) |
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(green << info->var.green.offset) |
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(blue << info->var.blue.offset);
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palette[regno] = value;
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return 0;
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}
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pindex = regno;
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if (fb->bits_per_pixel == 16) {
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pindex = regno << 3;
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if (fb->depth == 16 && regno > 63)
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return -EINVAL;
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if (fb->depth == 15 && regno > 31)
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return -EINVAL;
|
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|
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if (fb->depth == 16) {
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u16 r, g, b;
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int i;
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if (regno < 32) {
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for (i = 0; i < 8; i++)
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fb_helper->funcs->gamma_set(crtc, red,
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green, blue, pindex + i);
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}
|
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|
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fb_helper->funcs->gamma_get(crtc, &r,
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&g, &b,
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pindex >> 1);
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|
|
for (i = 0; i < 4; i++)
|
|
fb_helper->funcs->gamma_set(crtc, r,
|
|
green, b,
|
|
(pindex >> 1) + i);
|
|
}
|
|
}
|
|
|
|
if (fb->depth != 16)
|
|
fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
|
|
return 0;
|
|
}
|
|
|
|
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
u16 *red, *green, *blue, *transp;
|
|
struct drm_crtc *crtc;
|
|
int i, rc = 0;
|
|
int start;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
red = cmap->red;
|
|
green = cmap->green;
|
|
blue = cmap->blue;
|
|
transp = cmap->transp;
|
|
start = cmap->start;
|
|
|
|
for (i = 0; i < cmap->len; i++) {
|
|
u16 hred, hgreen, hblue, htransp = 0xffff;
|
|
|
|
hred = *red++;
|
|
hgreen = *green++;
|
|
hblue = *blue++;
|
|
|
|
if (transp)
|
|
htransp = *transp++;
|
|
|
|
rc = setcolreg(crtc, hred, hgreen, hblue, start++, info);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
crtc_funcs->load_lut(crtc);
|
|
}
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_setcmap);
|
|
|
|
int drm_fb_helper_setcolreg(unsigned regno,
|
|
unsigned red,
|
|
unsigned green,
|
|
unsigned blue,
|
|
unsigned transp,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_crtc *crtc;
|
|
int i;
|
|
int ret;
|
|
|
|
if (regno > 255)
|
|
return 1;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
ret = setcolreg(crtc, red, green, blue, regno, info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
crtc_funcs->load_lut(crtc);
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_setcolreg);
|
|
|
|
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
int depth;
|
|
|
|
if (var->pixclock != 0)
|
|
return -EINVAL;
|
|
|
|
/* Need to resize the fb object !!! */
|
|
if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) {
|
|
DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb "
|
|
"object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel,
|
|
fb->width, fb->height, fb->bits_per_pixel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 16:
|
|
depth = (var->green.length == 6) ? 16 : 15;
|
|
break;
|
|
case 32:
|
|
depth = (var->transp.length > 0) ? 32 : 24;
|
|
break;
|
|
default:
|
|
depth = var->bits_per_pixel;
|
|
break;
|
|
}
|
|
|
|
switch (depth) {
|
|
case 8:
|
|
var->red.offset = 0;
|
|
var->green.offset = 0;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 15:
|
|
var->red.offset = 10;
|
|
var->green.offset = 5;
|
|
var->blue.offset = 0;
|
|
var->red.length = 5;
|
|
var->green.length = 5;
|
|
var->blue.length = 5;
|
|
var->transp.length = 1;
|
|
var->transp.offset = 15;
|
|
break;
|
|
case 16:
|
|
var->red.offset = 11;
|
|
var->green.offset = 5;
|
|
var->blue.offset = 0;
|
|
var->red.length = 5;
|
|
var->green.length = 6;
|
|
var->blue.length = 5;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 24:
|
|
var->red.offset = 16;
|
|
var->green.offset = 8;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
break;
|
|
case 32:
|
|
var->red.offset = 16;
|
|
var->green.offset = 8;
|
|
var->blue.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.length = 8;
|
|
var->blue.length = 8;
|
|
var->transp.length = 8;
|
|
var->transp.offset = 24;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_check_var);
|
|
|
|
/* this will let fbcon do the mode init */
|
|
int drm_fb_helper_set_par(struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct drm_crtc *crtc;
|
|
int ret;
|
|
int i;
|
|
|
|
if (var->pixclock != 0) {
|
|
DRM_ERROR("PIXEL CLOCK SET\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) {
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_set_par);
|
|
|
|
int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct drm_fb_helper *fb_helper = info->par;
|
|
struct drm_device *dev = fb_helper->dev;
|
|
struct drm_mode_set *modeset;
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
for (i = 0; i < fb_helper->crtc_count; i++) {
|
|
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
|
|
break;
|
|
}
|
|
|
|
if (i == fb_helper->crtc_count)
|
|
continue;
|
|
|
|
modeset = &fb_helper->crtc_info[i].mode_set;
|
|
|
|
modeset->x = var->xoffset;
|
|
modeset->y = var->yoffset;
|
|
|
|
if (modeset->num_connectors) {
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
ret = crtc->funcs->set_config(modeset);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
if (!ret) {
|
|
info->var.xoffset = var->xoffset;
|
|
info->var.yoffset = var->yoffset;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_pan_display);
|
|
|
|
int drm_fb_helper_single_fb_probe(struct drm_device *dev,
|
|
int preferred_bpp,
|
|
int (*fb_find_or_create)(struct drm_device *dev,
|
|
struct drm_fb_helper_surface_size *sizes,
|
|
struct drm_fb_helper **fb_ptr))
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector *connector;
|
|
int new_fb = 0;
|
|
int crtc_count = 0;
|
|
int ret, i, conn_count = 0;
|
|
struct fb_info *info;
|
|
struct drm_mode_set *modeset = NULL;
|
|
struct drm_fb_helper *fb_helper;
|
|
struct drm_fb_helper_surface_size sizes;
|
|
|
|
memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size));
|
|
sizes.surface_depth = 24;
|
|
sizes.surface_bpp = 32;
|
|
sizes.fb_width = (unsigned)-1;
|
|
sizes.fb_height = (unsigned)-1;
|
|
|
|
/* if driver picks 8 or 16 by default use that
|
|
for both depth/bpp */
|
|
if (preferred_bpp != sizes.surface_bpp) {
|
|
sizes.surface_depth = sizes.surface_bpp = preferred_bpp;
|
|
}
|
|
/* first up get a count of crtcs now in use and new min/maxes width/heights */
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
|
|
|
|
struct drm_fb_helper_cmdline_mode *cmdline_mode;
|
|
|
|
if (!fb_help_conn)
|
|
continue;
|
|
|
|
cmdline_mode = &fb_help_conn->cmdline_mode;
|
|
|
|
if (cmdline_mode->bpp_specified) {
|
|
switch (cmdline_mode->bpp) {
|
|
case 8:
|
|
sizes.surface_depth = sizes.surface_bpp = 8;
|
|
break;
|
|
case 15:
|
|
sizes.surface_depth = 15;
|
|
sizes.surface_bpp = 16;
|
|
break;
|
|
case 16:
|
|
sizes.surface_depth = sizes.surface_bpp = 16;
|
|
break;
|
|
case 24:
|
|
sizes.surface_depth = sizes.surface_bpp = 24;
|
|
break;
|
|
case 32:
|
|
sizes.surface_depth = 24;
|
|
sizes.surface_bpp = 32;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
if (drm_helper_crtc_in_use(crtc)) {
|
|
if (crtc->desired_mode) {
|
|
if (crtc->desired_mode->hdisplay < sizes.fb_width)
|
|
sizes.fb_width = crtc->desired_mode->hdisplay;
|
|
|
|
if (crtc->desired_mode->vdisplay < sizes.fb_height)
|
|
sizes.fb_height = crtc->desired_mode->vdisplay;
|
|
|
|
if (crtc->desired_mode->hdisplay > sizes.surface_width)
|
|
sizes.surface_width = crtc->desired_mode->hdisplay;
|
|
|
|
if (crtc->desired_mode->vdisplay > sizes.surface_height)
|
|
sizes.surface_height = crtc->desired_mode->vdisplay;
|
|
}
|
|
crtc_count++;
|
|
}
|
|
}
|
|
|
|
if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) {
|
|
/* hmm everyone went away - assume VGA cable just fell out
|
|
and will come back later. */
|
|
return 0;
|
|
}
|
|
|
|
/* push down into drivers */
|
|
new_fb = (*fb_find_or_create)(dev, &sizes,
|
|
&fb_helper);
|
|
if (new_fb < 0)
|
|
return new_fb;
|
|
|
|
info = fb_helper->fbdev;
|
|
|
|
crtc_count = 0;
|
|
/* okay we need to setup new connector sets in the crtcs */
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
modeset = &fb_helper->crtc_info[crtc_count].mode_set;
|
|
modeset->fb = fb_helper->fb;
|
|
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 > fb_helper->conn_limit)
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
for (i = conn_count; i < fb_helper->conn_limit; i++)
|
|
modeset->connectors[i] = NULL;
|
|
|
|
modeset->crtc = crtc;
|
|
crtc_count++;
|
|
|
|
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);
|
|
}
|
|
}
|
|
fb_helper->crtc_count = crtc_count;
|
|
|
|
if (new_fb) {
|
|
info->var.pixclock = 0;
|
|
ret = fb_alloc_cmap(&info->cmap, modeset->crtc->gamma_size, 0);
|
|
if (ret)
|
|
return ret;
|
|
if (register_framebuffer(info) < 0) {
|
|
fb_dealloc_cmap(&info->cmap);
|
|
return -EINVAL;
|
|
}
|
|
|
|
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
|
|
info->fix.id);
|
|
|
|
} else {
|
|
drm_fb_helper_set_par(info);
|
|
}
|
|
|
|
/* Switch back to kernel console on panic */
|
|
/* multi card linked list maybe */
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
|
printk(KERN_INFO "registered panic notifier\n");
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
&paniced);
|
|
register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
}
|
|
if (new_fb)
|
|
list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_single_fb_probe);
|
|
|
|
void drm_fb_helper_free(struct drm_fb_helper *helper)
|
|
{
|
|
list_del(&helper->kernel_fb_list);
|
|
if (list_empty(&kernel_fb_helper_list)) {
|
|
printk(KERN_INFO "unregistered panic notifier\n");
|
|
atomic_notifier_chain_unregister(&panic_notifier_list,
|
|
&paniced);
|
|
unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
|
|
}
|
|
drm_fb_helper_crtc_free(helper);
|
|
fb_dealloc_cmap(&helper->fbdev->cmap);
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_free);
|
|
|
|
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
|
|
uint32_t depth)
|
|
{
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
|
|
FB_VISUAL_TRUECOLOR;
|
|
info->fix.type_aux = 0;
|
|
info->fix.xpanstep = 1; /* doing it in hw */
|
|
info->fix.ypanstep = 1; /* doing it in hw */
|
|
info->fix.ywrapstep = 0;
|
|
info->fix.accel = FB_ACCEL_NONE;
|
|
info->fix.type_aux = 0;
|
|
|
|
info->fix.line_length = pitch;
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_fix);
|
|
|
|
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
|
|
uint32_t fb_width, uint32_t fb_height)
|
|
{
|
|
struct drm_framebuffer *fb = fb_helper->fb;
|
|
info->pseudo_palette = fb_helper->pseudo_palette;
|
|
info->var.xres_virtual = fb->width;
|
|
info->var.yres_virtual = fb->height;
|
|
info->var.bits_per_pixel = fb->bits_per_pixel;
|
|
info->var.xoffset = 0;
|
|
info->var.yoffset = 0;
|
|
info->var.activate = FB_ACTIVATE_NOW;
|
|
info->var.height = -1;
|
|
info->var.width = -1;
|
|
|
|
switch (fb->depth) {
|
|
case 8:
|
|
info->var.red.offset = 0;
|
|
info->var.green.offset = 0;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8; /* 8bit DAC */
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 0;
|
|
info->var.transp.length = 0;
|
|
break;
|
|
case 15:
|
|
info->var.red.offset = 10;
|
|
info->var.green.offset = 5;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 5;
|
|
info->var.green.length = 5;
|
|
info->var.blue.length = 5;
|
|
info->var.transp.offset = 15;
|
|
info->var.transp.length = 1;
|
|
break;
|
|
case 16:
|
|
info->var.red.offset = 11;
|
|
info->var.green.offset = 5;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 5;
|
|
info->var.green.length = 6;
|
|
info->var.blue.length = 5;
|
|
info->var.transp.offset = 0;
|
|
break;
|
|
case 24:
|
|
info->var.red.offset = 16;
|
|
info->var.green.offset = 8;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8;
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 0;
|
|
info->var.transp.length = 0;
|
|
break;
|
|
case 32:
|
|
info->var.red.offset = 16;
|
|
info->var.green.offset = 8;
|
|
info->var.blue.offset = 0;
|
|
info->var.red.length = 8;
|
|
info->var.green.length = 8;
|
|
info->var.blue.length = 8;
|
|
info->var.transp.offset = 24;
|
|
info->var.transp.length = 8;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
info->var.xres = fb_width;
|
|
info->var.yres = fb_height;
|
|
}
|
|
EXPORT_SYMBOL(drm_fb_helper_fill_var);
|
|
|
|
static int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX,
|
|
uint32_t maxY)
|
|
{
|
|
struct drm_connector *connector;
|
|
int count = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
count += connector->funcs->fill_modes(connector, maxX, maxY);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height)
|
|
{
|
|
struct drm_display_mode *mode;
|
|
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
|
if (drm_mode_width(mode) > width ||
|
|
drm_mode_height(mode) > height)
|
|
continue;
|
|
if (mode->type & DRM_MODE_TYPE_PREFERRED)
|
|
return mode;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static bool drm_has_cmdline_mode(struct drm_connector *connector)
|
|
{
|
|
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
|
|
struct drm_fb_helper_cmdline_mode *cmdline_mode;
|
|
|
|
if (!fb_help_conn)
|
|
return false;
|
|
|
|
cmdline_mode = &fb_help_conn->cmdline_mode;
|
|
return cmdline_mode->specified;
|
|
}
|
|
|
|
static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height)
|
|
{
|
|
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
|
|
struct drm_fb_helper_cmdline_mode *cmdline_mode;
|
|
struct drm_display_mode *mode = NULL;
|
|
|
|
if (!fb_help_conn)
|
|
return mode;
|
|
|
|
cmdline_mode = &fb_help_conn->cmdline_mode;
|
|
if (cmdline_mode->specified == false)
|
|
return mode;
|
|
|
|
/* attempt to find a matching mode in the list of modes
|
|
* we have gotten so far, if not add a CVT mode that conforms
|
|
*/
|
|
if (cmdline_mode->rb || cmdline_mode->margins)
|
|
goto create_mode;
|
|
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
|
/* check width/height */
|
|
if (mode->hdisplay != cmdline_mode->xres ||
|
|
mode->vdisplay != cmdline_mode->yres)
|
|
continue;
|
|
|
|
if (cmdline_mode->refresh_specified) {
|
|
if (mode->vrefresh != cmdline_mode->refresh)
|
|
continue;
|
|
}
|
|
|
|
if (cmdline_mode->interlace) {
|
|
if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
|
|
continue;
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
create_mode:
|
|
mode = drm_cvt_mode(connector->dev, cmdline_mode->xres,
|
|
cmdline_mode->yres,
|
|
cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
|
|
cmdline_mode->rb, cmdline_mode->interlace,
|
|
cmdline_mode->margins);
|
|
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
|
|
list_add(&mode->head, &connector->modes);
|
|
return mode;
|
|
}
|
|
|
|
static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
|
|
{
|
|
bool enable;
|
|
|
|
if (strict) {
|
|
enable = connector->status == connector_status_connected;
|
|
} else {
|
|
enable = connector->status != connector_status_disconnected;
|
|
}
|
|
return enable;
|
|
}
|
|
|
|
static void drm_enable_connectors(struct drm_device *dev, bool *enabled)
|
|
{
|
|
bool any_enabled = false;
|
|
struct drm_connector *connector;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
enabled[i] = drm_connector_enabled(connector, true);
|
|
DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
|
|
enabled[i] ? "yes" : "no");
|
|
any_enabled |= enabled[i];
|
|
i++;
|
|
}
|
|
|
|
if (any_enabled)
|
|
return;
|
|
|
|
i = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
enabled[i] = drm_connector_enabled(connector, false);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
static bool drm_target_preferred(struct drm_device *dev,
|
|
struct drm_display_mode **modes,
|
|
bool *enabled, int width, int height)
|
|
{
|
|
struct drm_connector *connector;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
if (enabled[i] == false) {
|
|
i++;
|
|
continue;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
|
|
connector->base.id);
|
|
|
|
/* got for command line mode first */
|
|
modes[i] = drm_pick_cmdline_mode(connector, width, height);
|
|
if (!modes[i]) {
|
|
DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
|
|
connector->base.id);
|
|
modes[i] = drm_has_preferred_mode(connector, width, height);
|
|
}
|
|
/* No preferred modes, pick one off the list */
|
|
if (!modes[i] && !list_empty(&connector->modes)) {
|
|
list_for_each_entry(modes[i], &connector->modes, head)
|
|
break;
|
|
}
|
|
DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
|
|
"none");
|
|
i++;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int drm_pick_crtcs(struct drm_device *dev,
|
|
struct drm_crtc **best_crtcs,
|
|
struct drm_display_mode **modes,
|
|
int n, int width, int height)
|
|
{
|
|
int c, o;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_helper_funcs *connector_funcs;
|
|
struct drm_encoder *encoder;
|
|
struct drm_crtc *best_crtc;
|
|
int my_score, best_score, score;
|
|
struct drm_crtc **crtcs, *crtc;
|
|
|
|
if (n == dev->mode_config.num_connector)
|
|
return 0;
|
|
c = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
if (c == n)
|
|
break;
|
|
c++;
|
|
}
|
|
|
|
best_crtcs[n] = NULL;
|
|
best_crtc = NULL;
|
|
best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height);
|
|
if (modes[n] == NULL)
|
|
return best_score;
|
|
|
|
crtcs = kmalloc(dev->mode_config.num_connector *
|
|
sizeof(struct drm_crtc *), GFP_KERNEL);
|
|
if (!crtcs)
|
|
return best_score;
|
|
|
|
my_score = 1;
|
|
if (connector->status == connector_status_connected)
|
|
my_score++;
|
|
if (drm_has_cmdline_mode(connector))
|
|
my_score++;
|
|
if (drm_has_preferred_mode(connector, width, height))
|
|
my_score++;
|
|
|
|
connector_funcs = connector->helper_private;
|
|
encoder = connector_funcs->best_encoder(connector);
|
|
if (!encoder)
|
|
goto out;
|
|
|
|
connector->encoder = encoder;
|
|
|
|
/* select a crtc for this connector and then attempt to configure
|
|
remaining connectors */
|
|
c = 0;
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
if ((encoder->possible_crtcs & (1 << c)) == 0) {
|
|
c++;
|
|
continue;
|
|
}
|
|
|
|
for (o = 0; o < n; o++)
|
|
if (best_crtcs[o] == crtc)
|
|
break;
|
|
|
|
if (o < n) {
|
|
/* ignore cloning for now */
|
|
c++;
|
|
continue;
|
|
}
|
|
|
|
crtcs[n] = crtc;
|
|
memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *));
|
|
score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1,
|
|
width, height);
|
|
if (score > best_score) {
|
|
best_crtc = crtc;
|
|
best_score = score;
|
|
memcpy(best_crtcs, crtcs,
|
|
dev->mode_config.num_connector *
|
|
sizeof(struct drm_crtc *));
|
|
}
|
|
c++;
|
|
}
|
|
out:
|
|
kfree(crtcs);
|
|
return best_score;
|
|
}
|
|
|
|
static void drm_setup_crtcs(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc **crtcs;
|
|
struct drm_display_mode **modes;
|
|
struct drm_encoder *encoder;
|
|
struct drm_connector *connector;
|
|
bool *enabled;
|
|
int width, height;
|
|
int i, ret;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
width = dev->mode_config.max_width;
|
|
height = dev->mode_config.max_height;
|
|
|
|
/* clean out all the encoder/crtc combos */
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
encoder->crtc = NULL;
|
|
}
|
|
|
|
crtcs = kcalloc(dev->mode_config.num_connector,
|
|
sizeof(struct drm_crtc *), GFP_KERNEL);
|
|
modes = kcalloc(dev->mode_config.num_connector,
|
|
sizeof(struct drm_display_mode *), GFP_KERNEL);
|
|
enabled = kcalloc(dev->mode_config.num_connector,
|
|
sizeof(bool), GFP_KERNEL);
|
|
|
|
drm_enable_connectors(dev, enabled);
|
|
|
|
ret = drm_target_preferred(dev, modes, enabled, width, height);
|
|
if (!ret)
|
|
DRM_ERROR("Unable to find initial modes\n");
|
|
|
|
DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height);
|
|
|
|
drm_pick_crtcs(dev, crtcs, modes, 0, width, height);
|
|
|
|
i = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
struct drm_display_mode *mode = modes[i];
|
|
struct drm_crtc *crtc = crtcs[i];
|
|
|
|
if (connector->encoder == NULL) {
|
|
i++;
|
|
continue;
|
|
}
|
|
|
|
if (mode && crtc) {
|
|
DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
|
|
mode->name, crtc->base.id);
|
|
crtc->desired_mode = mode;
|
|
connector->encoder->crtc = crtc;
|
|
} else {
|
|
connector->encoder->crtc = NULL;
|
|
connector->encoder = NULL;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
kfree(crtcs);
|
|
kfree(modes);
|
|
kfree(enabled);
|
|
}
|
|
|
|
/**
|
|
* drm_helper_initial_config - setup a sane initial connector configuration
|
|
* @dev: DRM device
|
|
*
|
|
* LOCKING:
|
|
* Called at init time, must take mode config lock.
|
|
*
|
|
* Scan the CRTCs and connectors and try to put together an initial setup.
|
|
* At the moment, this is a cloned configuration across all heads with
|
|
* a new framebuffer object as the backing store.
|
|
*
|
|
* RETURNS:
|
|
* Zero if everything went ok, nonzero otherwise.
|
|
*/
|
|
bool drm_helper_initial_config(struct drm_device *dev)
|
|
{
|
|
int count = 0;
|
|
|
|
/* disable all the possible outputs/crtcs before entering KMS mode */
|
|
drm_helper_disable_unused_functions(dev);
|
|
|
|
drm_fb_helper_parse_command_line(dev);
|
|
|
|
count = drm_helper_probe_connector_modes(dev,
|
|
dev->mode_config.max_width,
|
|
dev->mode_config.max_height);
|
|
|
|
/*
|
|
* we shouldn't end up with no modes here.
|
|
*/
|
|
if (count == 0)
|
|
printk(KERN_INFO "No connectors reported connected with modes\n");
|
|
|
|
drm_setup_crtcs(dev);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_initial_config);
|
|
|
|
bool drm_helper_fb_hotplug_event(struct drm_device *dev)
|
|
{
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
drm_helper_probe_connector_modes(dev, dev->mode_config.max_width,
|
|
dev->mode_config.max_height);
|
|
|
|
drm_setup_crtcs(dev);
|
|
|
|
return true;
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_fb_hotplug_event);
|