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drm: EDID endianness fixes.

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Mostly replacing bitfields with explicit masks and shifts.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Michel Dänzer 2009-06-15 16:56:07 +02:00 committed by Dave Airlie
parent 00fa28ae29
commit 0454beab0f
3 changed files with 93 additions and 95 deletions
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94
drivers/gpu/drm/drm_edid.c
View file

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

2
drivers/gpu/drm/radeon/radeon_display.c
View file

@ -351,7 +351,7 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
radeon_i2c_do_lock(radeon_connector, 0); radeon_i2c_do_lock(radeon_connector, 0);
if (edid) { if (edid) {
/* update digital bits here */ /* update digital bits here */
if (edid->digital) if (edid->input & DRM_EDID_INPUT_DIGITAL)
radeon_connector->use_digital = 1; radeon_connector->use_digital = 1;
else else
radeon_connector->use_digital = 0; radeon_connector->use_digital = 0;

92
include/drm/drm_edid.h
View file

@ -28,53 +28,49 @@
#define EDID_LENGTH 128 #define EDID_LENGTH 128
#define DDC_ADDR 0x50 #define DDC_ADDR 0x50
#ifdef BIG_ENDIAN
#error "EDID structure is little endian, need big endian versions"
#else
struct est_timings { struct est_timings {
u8 t1; u8 t1;
u8 t2; u8 t2;
u8 mfg_rsvd; u8 mfg_rsvd;
} __attribute__((packed)); } __attribute__((packed));
/* 00=16:10, 01=4:3, 10=5:4, 11=16:9 */
#define EDID_TIMING_ASPECT_SHIFT 0
#define EDID_TIMING_ASPECT_MASK (0x3 << EDID_TIMING_ASPECT_SHIFT)
/* need to add 60 */
#define EDID_TIMING_VFREQ_SHIFT 2
#define EDID_TIMING_VFREQ_MASK (0x3f << EDID_TIMING_VFREQ_SHIFT)
struct std_timing { struct std_timing {
u8 hsize; /* need to multiply by 8 then add 248 */ u8 hsize; /* need to multiply by 8 then add 248 */
u8 vfreq:6; /* need to add 60 */ u8 vfreq_aspect;
u8 aspect_ratio:2; /* 00=16:10, 01=4:3, 10=5:4, 11=16:9 */
} __attribute__((packed)); } __attribute__((packed));
#define DRM_EDID_PT_HSYNC_POSITIVE (1 << 6)
#define DRM_EDID_PT_VSYNC_POSITIVE (1 << 5)
#define DRM_EDID_PT_SEPARATE_SYNC (3 << 3)
#define DRM_EDID_PT_STEREO (1 << 2)
#define DRM_EDID_PT_INTERLACED (1 << 1)
/* If detailed data is pixel timing */ /* If detailed data is pixel timing */
struct detailed_pixel_timing { struct detailed_pixel_timing {
u8 hactive_lo; u8 hactive_lo;
u8 hblank_lo; u8 hblank_lo;
u8 hblank_hi:4; u8 hactive_hblank_hi;
u8 hactive_hi:4;
u8 vactive_lo; u8 vactive_lo;
u8 vblank_lo; u8 vblank_lo;
u8 vblank_hi:4; u8 vactive_vblank_hi;
u8 vactive_hi:4;
u8 hsync_offset_lo; u8 hsync_offset_lo;
u8 hsync_pulse_width_lo; u8 hsync_pulse_width_lo;
u8 vsync_pulse_width_lo:4; u8 vsync_offset_pulse_width_lo;
u8 vsync_offset_lo:4; u8 hsync_vsync_offset_pulse_width_hi;
u8 vsync_pulse_width_hi:2;
u8 vsync_offset_hi:2;
u8 hsync_pulse_width_hi:2;
u8 hsync_offset_hi:2;
u8 width_mm_lo; u8 width_mm_lo;
u8 height_mm_lo; u8 height_mm_lo;
u8 height_mm_hi:4; u8 width_height_mm_hi;
u8 width_mm_hi:4;
u8 hborder; u8 hborder;
u8 vborder; u8 vborder;
u8 unknown0:1; u8 misc;
u8 hsync_positive:1;
u8 vsync_positive:1;
u8 separate_sync:2;
u8 stereo:1;
u8 unknown6:1;
u8 interlaced:1;
} __attribute__((packed)); } __attribute__((packed));
/* If it's not pixel timing, it'll be one of the below */ /* If it's not pixel timing, it'll be one of the below */
@ -88,18 +84,16 @@ struct detailed_data_monitor_range {
u8 min_hfreq_khz; u8 min_hfreq_khz;
u8 max_hfreq_khz; u8 max_hfreq_khz;
u8 pixel_clock_mhz; /* need to multiply by 10 */ u8 pixel_clock_mhz; /* need to multiply by 10 */
u16 sec_gtf_toggle; /* A000=use above, 20=use below */ /* FIXME: byte order */ __le16 sec_gtf_toggle; /* A000=use above, 20=use below */
u8 hfreq_start_khz; /* need to multiply by 2 */ u8 hfreq_start_khz; /* need to multiply by 2 */
u8 c; /* need to divide by 2 */ u8 c; /* need to divide by 2 */
u16 m; /* FIXME: byte order */ __le16 m;
u8 k; u8 k;
u8 j; /* need to divide by 2 */ u8 j; /* need to divide by 2 */
} __attribute__((packed)); } __attribute__((packed));
struct detailed_data_wpindex { struct detailed_data_wpindex {
u8 white_y_lo:2; u8 white_xy_lo; /* Upper 2 bits each */
u8 white_x_lo:2;
u8 pad:4;
u8 white_x_hi; u8 white_x_hi;
u8 white_y_hi; u8 white_y_hi;
u8 gamma; /* need to divide by 100 then add 1 */ u8 gamma; /* need to divide by 100 then add 1 */
@ -134,13 +128,29 @@ struct detailed_non_pixel {
#define EDID_DETAIL_MONITOR_SERIAL 0xff #define EDID_DETAIL_MONITOR_SERIAL 0xff
struct detailed_timing { struct detailed_timing {
u16 pixel_clock; /* need to multiply by 10 KHz */ /* FIXME: byte order */ __le16 pixel_clock; /* need to multiply by 10 KHz */
union { union {
struct detailed_pixel_timing pixel_data; struct detailed_pixel_timing pixel_data;
struct detailed_non_pixel other_data; struct detailed_non_pixel other_data;
} data; } data;
} __attribute__((packed)); } __attribute__((packed));
#define DRM_EDID_INPUT_SERRATION_VSYNC (1 << 7)
#define DRM_EDID_INPUT_SYNC_ON_GREEN (1 << 5)
#define DRM_EDID_INPUT_COMPOSITE_SYNC (1 << 4)
#define DRM_EDID_INPUT_SEPARATE_SYNCS (1 << 3)
#define DRM_EDID_INPUT_BLANK_TO_BLACK (1 << 2)
#define DRM_EDID_INPUT_VIDEO_LEVEL (3 << 1)
#define DRM_EDID_INPUT_DIGITAL (1 << 0) /* bits above must be zero if set */
#define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 7)
#define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 6)
#define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 5)
#define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */
#define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 2)
#define DRM_EDID_FEATURE_PM_SUSPEND (1 << 1)
#define DRM_EDID_FEATURE_PM_STANDBY (1 << 0)
struct edid { struct edid {
u8 header[8]; u8 header[8];
/* Vendor & product info */ /* Vendor & product info */
@ -153,25 +163,11 @@ struct edid {
u8 version; u8 version;
u8 revision; u8 revision;
/* Display info: */ /* Display info: */
/* input definition */ u8 input;
u8 serration_vsync:1;
u8 sync_on_green:1;
u8 composite_sync:1;
u8 separate_syncs:1;
u8 blank_to_black:1;
u8 video_level:2;
u8 digital:1; /* bits below must be zero if set */
u8 width_cm; u8 width_cm;
u8 height_cm; u8 height_cm;
u8 gamma; u8 gamma;
/* feature support */ u8 features;
u8 default_gtf:1;
u8 preferred_timing:1;
u8 standard_color:1;
u8 display_type:2; /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */
u8 pm_active_off:1;
u8 pm_suspend:1;
u8 pm_standby:1;
/* Color characteristics */ /* Color characteristics */
u8 red_green_lo; u8 red_green_lo;
u8 black_white_lo; u8 black_white_lo;
@ -195,8 +191,6 @@ struct edid {
u8 checksum; u8 checksum;
} __attribute__((packed)); } __attribute__((packed));
#endif /* little endian structs */
#define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8)) #define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8))
#endif /* __DRM_EDID_H__ */ #endif /* __DRM_EDID_H__ */