ps3av: add quirk database for broken monitors

add a quirk database for broken monitors where the `best' advertised
video mode doesn't work
Signed-off-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: NAntonino Daplas <adaplas@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/ps3/ps3av.c

@@ -721,6 +721,45 @@ static void ps3av_monitor_info_dump(const struct ps3av_pkt_av_get_monitor_info *
 	}
 }
 
+static const struct ps3av_monitor_quirk {
+	const char *monitor_name;
+	u32 clear_60, clear_50, clear_vesa;
+} ps3av_monitor_quirks[] = {
+	{
+		.monitor_name	= "DELL 2007WFP",
+		.clear_60	= PS3AV_RESBIT_1920x1080I
+	}, {
+		.monitor_name	= "L226WTQ",
+		.clear_60	= PS3AV_RESBIT_1920x1080I |
+				  PS3AV_RESBIT_1920x1080P
+	}, {
+		.monitor_name	= "SyncMaster",
+		.clear_60	= PS3AV_RESBIT_1920x1080I
+	}
+};
+
+static void ps3av_fixup_monitor_info(struct ps3av_info_monitor *info)
+{
+	unsigned int i;
+	const struct ps3av_monitor_quirk *quirk;
+
+	for (i = 0; i < ARRAY_SIZE(ps3av_monitor_quirks); i++) {
+		quirk = &ps3av_monitor_quirks[i];
+		if (!strncmp(info->monitor_name, quirk->monitor_name,
+			     sizeof(info->monitor_name))) {
+			pr_info("%s: Applying quirk for %s\n", __func__,
+				quirk->monitor_name);
+			info->res_60.res_bits &= ~quirk->clear_60;
+			info->res_60.native &= ~quirk->clear_60;
+			info->res_50.res_bits &= ~quirk->clear_50;
+			info->res_50.native &= ~quirk->clear_50;
+			info->res_vesa.res_bits &= ~quirk->clear_vesa;
+			info->res_vesa.native &= ~quirk->clear_vesa;
+			break;
+		}
+	}
+}
+
 static int ps3av_auto_videomode(struct ps3av_pkt_av_get_hw_conf *av_hw_conf,
 				int boot)
 {
@@ -739,6 +778,8 @@ static int ps3av_auto_videomode(struct ps3av_pkt_av_get_hw_conf *av_hw_conf,
 		ps3av_monitor_info_dump(&monitor_info);
 
 		info = &monitor_info.info;
+		ps3av_fixup_monitor_info(info);
+
 		switch (info->monitor_type) {
 		case PS3AV_MONITOR_TYPE_DVI:
 			dvi = PS3AV_MODE_DVI;