video, sm501: add OF binding to support SM501
- add binding to OF, compatible name "smi,sm501"
Signed-off-by: Heiko Schocher <hs@denx.de>
cc: linux-fbdev@vger.kernel.org
cc: devicetree-discuss@ozlabs.org
cc: Ben Dooks <ben@simtec.co.uk>
cc: Vincent Sanders <vince@simtec.co.uk>
cc: Samuel Ortiz <sameo@linux.intel.com>
cc: linux-kernel@vger.kernel.org
cc: Randy Dunlap <rdunlap@xenotime.net>
cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index f31252c..46d1a64 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -1729,6 +1729,15 @@
FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
+#if defined(CONFIG_OF)
+#ifdef __BIG_ENDIAN
+ if (of_get_property(info->dev->parent->of_node, "little-endian", NULL))
+ fb->flags |= FBINFO_FOREIGN_ENDIAN;
+#else
+ if (of_get_property(info->dev->parent->of_node, "big-endian", NULL))
+ fb->flags |= FBINFO_FOREIGN_ENDIAN;
+#endif
+#endif
/* fixed data */
fb->fix.type = FB_TYPE_PACKED_PIXELS;
@@ -1765,14 +1774,17 @@
fb->var.xres_virtual = fb->var.xres;
fb->var.yres_virtual = fb->var.yres;
} else {
- if (info->edid_data)
+ if (info->edid_data) {
ret = fb_find_mode(&fb->var, fb, fb_mode,
fb->monspecs.modedb,
fb->monspecs.modedb_len,
&sm501_default_mode, default_bpp);
- else
+ /* edid_data is no longer needed, free it */
+ kfree(info->edid_data);
+ } else {
ret = fb_find_mode(&fb->var, fb,
NULL, NULL, 0, NULL, 8);
+ }
switch (ret) {
case 1:
@@ -1933,8 +1945,32 @@
}
if (info->pdata == NULL) {
- dev_info(dev, "using default configuration data\n");
+ int found = 0;
+#if defined(CONFIG_OF)
+ struct device_node *np = pdev->dev.parent->of_node;
+ const u8 *prop;
+ const char *cp;
+ int len;
+
info->pdata = &sm501fb_def_pdata;
+ if (np) {
+ /* Get EDID */
+ cp = of_get_property(np, "mode", &len);
+ if (cp)
+ strcpy(fb_mode, cp);
+ prop = of_get_property(np, "edid", &len);
+ if (prop && len == EDID_LENGTH) {
+ info->edid_data = kmemdup(prop, EDID_LENGTH,
+ GFP_KERNEL);
+ if (info->edid_data)
+ found = 1;
+ }
+ }
+#endif
+ if (!found) {
+ dev_info(dev, "using default configuration data\n");
+ info->pdata = &sm501fb_def_pdata;
+ }
}
/* probe for the presence of each panel */