drm: EDID endianness fixes.

Mostly replacing bitfields with explicit masks and shifts.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 52 insertions, 48 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 801a0d0e0810..7d0835226f6e 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -252,16 +252,18 @@ struct drm_display_mode *drm_mode_std(struct drm_device *dev,
 {
         struct drm_display_mode *mode;
         int hsize = t->hsize * 8 + 248, vsize;
+        unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK)
+                >> EDID_TIMING_ASPECT_SHIFT;
 
         mode = drm_mode_create(dev);
         if (!mode)
                 return NULL;
 
-        if (t->aspect_ratio == 0)
+        if (aspect_ratio == 0)
                 vsize = (hsize * 10) / 16;
-        else if (t->aspect_ratio == 1)
+        else if (aspect_ratio == 1)
                 vsize = (hsize * 3) / 4;
-        else if (t->aspect_ratio == 2)
+        else if (aspect_ratio == 2)
                 vsize = (hsize * 4) / 5;
         else
                 vsize = (hsize * 9) / 16;
@@ -288,17 +290,24 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
 {
         struct drm_display_mode *mode;
         struct detailed_pixel_timing *pt = &timing->data.pixel_data;
+        unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo;
+        unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo;
+        unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo;
+        unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
+        unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 8 | pt->hsync_offset_lo;
+        unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) << 6 | pt->hsync_pulse_width_lo;
+        unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) | (pt->vsync_offset_pulse_width_lo & 0xf);
+        unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
 
         /* ignore tiny modes */
-        if (((pt->hactive_hi << 8) | pt->hactive_lo) < 64 ||
-            ((pt->vactive_hi << 8) | pt->hactive_lo) < 64)
+        if (hactive < 64 || vactive < 64)
                 return NULL;
 
-        if (pt->stereo) {
+        if (pt->misc & DRM_EDID_PT_STEREO) {
                 printk(KERN_WARNING "stereo mode not supported\n");
                 return NULL;
         }
-        if (!pt->separate_sync) {
+        if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) {
                 printk(KERN_WARNING "integrated sync not supported\n");
                 return NULL;
         }
@@ -310,41 +319,36 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
         mode->type = DRM_MODE_TYPE_DRIVER;
 
         if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
-                timing->pixel_clock = 1088;
-
-        mode->clock = timing->pixel_clock * 10;
-
-        mode->hdisplay = (pt->hactive_hi << 8) | pt->hactive_lo;
-        mode->hsync_start = mode->hdisplay + ((pt->hsync_offset_hi << 8) |
-                                              pt->hsync_offset_lo);
-        mode->hsync_end = mode->hsync_start +
-                ((pt->hsync_pulse_width_hi << 8) |
-                 pt->hsync_pulse_width_lo);
-        mode->htotal = mode->hdisplay + ((pt->hblank_hi << 8) | pt->hblank_lo);
-
-        mode->vdisplay = (pt->vactive_hi << 8) | pt->vactive_lo;
-        mode->vsync_start = mode->vdisplay + ((pt->vsync_offset_hi << 4) |
-                                              pt->vsync_offset_lo);
-        mode->vsync_end = mode->vsync_start +
-                ((pt->vsync_pulse_width_hi << 4) |
-                 pt->vsync_pulse_width_lo);
-        mode->vtotal = mode->vdisplay + ((pt->vblank_hi << 8) | pt->vblank_lo);
+                timing->pixel_clock = cpu_to_le16(1088);
+
+        mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
+
+        mode->hdisplay = hactive;
+        mode->hsync_start = mode->hdisplay + hsync_offset;
+        mode->hsync_end = mode->hsync_start + hsync_pulse_width;
+        mode->htotal = mode->hdisplay + hblank;
+
+        mode->vdisplay = vactive;
+        mode->vsync_start = mode->vdisplay + vsync_offset;
+        mode->vsync_end = mode->vsync_start + vsync_pulse_width;
+        mode->vtotal = mode->vdisplay + vblank;
 
         drm_mode_set_name(mode);
 
-        if (pt->interlaced)
+        if (pt->misc & DRM_EDID_PT_INTERLACED)
                 mode->flags |= DRM_MODE_FLAG_INTERLACE;
 
         if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
-                pt->hsync_positive = 1;
-                pt->vsync_positive = 1;
+                pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
         }
 
-        mode->flags |= pt->hsync_positive ? DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
-        mode->flags |= pt->vsync_positive ? DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
+        mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
+                DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
+        mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
+                DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
 
-        mode->width_mm = pt->width_mm_lo | (pt->width_mm_hi << 8);
-        mode->height_mm = pt->height_mm_lo | (pt->height_mm_hi << 8);
+        mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;
+        mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
 
         if (quirks & EDID_QUIRK_DETAILED_IN_CM) {
                 mode->width_mm *= 10;
@@ -465,7 +469,7 @@ static int add_standard_modes(struct drm_connector *connector, struct edid *edid
                 struct drm_display_mode *newmode;
 
                 /* If std timings bytes are 1, 1 it's empty */
-                if (t->hsize == 1 && (t->aspect_ratio | t->vfreq) == 1)
+                if (t->hsize == 1 && t->vfreq_aspect == 1)
                         continue;
 
                 newmode = drm_mode_std(dev, &edid->standard_timings[i]);
@@ -509,7 +513,7 @@ static int add_detailed_info(struct drm_connector *connector,
                                 continue;
 
                         /* First detailed mode is preferred */
-                        if (i == 0 && edid->preferred_timing)
+                        if (i == 0 && (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING))
                                 newmode->type |= DRM_MODE_TYPE_PREFERRED;
                         drm_mode_probed_add(connector, newmode);
 
@@ -767,22 +771,22 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
         if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
                 edid_fixup_preferred(connector, quirks);
 
-        connector->display_info.serration_vsync = edid->serration_vsync;
-        connector->display_info.sync_on_green = edid->sync_on_green;
-        connector->display_info.composite_sync = edid->composite_sync;
-        connector->display_info.separate_syncs = edid->separate_syncs;
-        connector->display_info.blank_to_black = edid->blank_to_black;
-        connector->display_info.video_level = edid->video_level;
-        connector->display_info.digital = edid->digital;
+        connector->display_info.serration_vsync = (edid->input & DRM_EDID_INPUT_SERRATION_VSYNC) ? 1 : 0;
+        connector->display_info.sync_on_green = (edid->input & DRM_EDID_INPUT_SYNC_ON_GREEN) ? 1 : 0;
+        connector->display_info.composite_sync = (edid->input & DRM_EDID_INPUT_COMPOSITE_SYNC) ? 1 : 0;
+        connector->display_info.separate_syncs = (edid->input & DRM_EDID_INPUT_SEPARATE_SYNCS) ? 1 : 0;
+        connector->display_info.blank_to_black = (edid->input & DRM_EDID_INPUT_BLANK_TO_BLACK) ? 1 : 0;
+        connector->display_info.video_level = (edid->input & DRM_EDID_INPUT_VIDEO_LEVEL) >> 5;
+        connector->display_info.digital = (edid->input & DRM_EDID_INPUT_DIGITAL) ? 1 : 0;
         connector->display_info.width_mm = edid->width_cm * 10;
         connector->display_info.height_mm = edid->height_cm * 10;
         connector->display_info.gamma = edid->gamma;
-        connector->display_info.gtf_supported = edid->default_gtf;
-        connector->display_info.standard_color = edid->standard_color;
-        connector->display_info.display_type = edid->display_type;
-        connector->display_info.active_off_supported = edid->pm_active_off;
-        connector->display_info.suspend_supported = edid->pm_suspend;
-        connector->display_info.standby_supported = edid->pm_standby;
+        connector->display_info.gtf_supported = (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF) ? 1 : 0;
+        connector->display_info.standard_color = (edid->features & DRM_EDID_FEATURE_STANDARD_COLOR) ? 1 : 0;
+        connector->display_info.display_type = (edid->features & DRM_EDID_FEATURE_DISPLAY_TYPE) >> 3;
+        connector->display_info.active_off_supported = (edid->features & DRM_EDID_FEATURE_PM_ACTIVE_OFF) ? 1 : 0;
+        connector->display_info.suspend_supported = (edid->features & DRM_EDID_FEATURE_PM_SUSPEND) ? 1 : 0;
+        connector->display_info.standby_supported = (edid->features & DRM_EDID_FEATURE_PM_STANDBY) ? 1 : 0;
         connector->display_info.gamma = edid->gamma;
 
         return num_modes;