Merge branch 'master' into for-linus

1 files changed, 113 insertions, 24 deletions

diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 27455ce298b..e38ad222454 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -34,7 +34,8 @@
 #include <linux/of_platform.h>
 
 #include <sysdev/fsl_soc.h>
-#include "fsl-diu-fb.h"
+#include <linux/fsl-diu-fb.h>
+#include "edid.h"
 
 /*
  * These parameters give default parameters
@@ -217,6 +218,7 @@ struct mfb_info {
 	int x_aoi_d;		/* aoi display x offset to physical screen */
 	int y_aoi_d;		/* aoi display y offset to physical screen */
 	struct fsl_diu_data *parent;
+	u8 *edid_data;
 };
 
 
@@ -317,6 +319,17 @@ static void fsl_diu_free(void *virt, size_t size)
 		free_pages_exact(virt, size);
 }
 
+/*
+ * Workaround for failed writing desc register of planes.
+ * Needed with MPC5121 DIU rev 2.0 silicon.
+ */
+void wr_reg_wa(u32 *reg, u32 val)
+{
+	do {
+		out_be32(reg, val);
+	} while (in_be32(reg) != val);
+}
+
 static int fsl_diu_enable_panel(struct fb_info *info)
 {
 	struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
@@ -330,7 +343,7 @@ static int fsl_diu_enable_panel(struct fb_info *info)
 		switch (mfbi->index) {
 		case 0:				/* plane 0 */
 			if (hw->desc[0] != ad->paddr)
-				out_be32(&hw->desc[0], ad->paddr);
+				wr_reg_wa(&hw->desc[0], ad->paddr);
 			break;
 		case 1:				/* plane 1 AOI 0 */
 			cmfbi = machine_data->fsl_diu_info[2]->par;
@@ -340,7 +353,7 @@ static int fsl_diu_enable_panel(struct fb_info *info)
 						cpu_to_le32(cmfbi->ad->paddr);
 				else
 					ad->next_ad = 0;
-				out_be32(&hw->desc[1], ad->paddr);
+				wr_reg_wa(&hw->desc[1], ad->paddr);
 			}
 			break;
 		case 3:				/* plane 2 AOI 0 */
@@ -351,14 +364,14 @@ static int fsl_diu_enable_panel(struct fb_info *info)
 						cpu_to_le32(cmfbi->ad->paddr);
 				else
 					ad->next_ad = 0;
-				out_be32(&hw->desc[2], ad->paddr);
+				wr_reg_wa(&hw->desc[2], ad->paddr);
 			}
 			break;
 		case 2:				/* plane 1 AOI 1 */
 			pmfbi = machine_data->fsl_diu_info[1]->par;
 			ad->next_ad = 0;
 			if (hw->desc[1] == machine_data->dummy_ad->paddr)
-				out_be32(&hw->desc[1], ad->paddr);
+				wr_reg_wa(&hw->desc[1], ad->paddr);
 			else					/* AOI0 open */
 				pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 			break;
@@ -366,7 +379,7 @@ static int fsl_diu_enable_panel(struct fb_info *info)
 			pmfbi = machine_data->fsl_diu_info[3]->par;
 			ad->next_ad = 0;
 			if (hw->desc[2] == machine_data->dummy_ad->paddr)
-				out_be32(&hw->desc[2], ad->paddr);
+				wr_reg_wa(&hw->desc[2], ad->paddr);
 			else				/* AOI0 was open */
 				pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 			break;
@@ -390,27 +403,24 @@ static int fsl_diu_disable_panel(struct fb_info *info)
 	switch (mfbi->index) {
 	case 0:					/* plane 0 */
 		if (hw->desc[0] != machine_data->dummy_ad->paddr)
-			out_be32(&hw->desc[0],
-				machine_data->dummy_ad->paddr);
+			wr_reg_wa(&hw->desc[0], machine_data->dummy_ad->paddr);
 		break;
 	case 1:					/* plane 1 AOI 0 */
 		cmfbi = machine_data->fsl_diu_info[2]->par;
 		if (cmfbi->count > 0)	/* AOI1 is open */
-			out_be32(&hw->desc[1], cmfbi->ad->paddr);
+			wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr);
 					/* move AOI1 to the first */
 		else			/* AOI1 was closed */
-			out_be32(&hw->desc[1],
-				machine_data->dummy_ad->paddr);
+			wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
 					/* close AOI 0 */
 		break;
 	case 3:					/* plane 2 AOI 0 */
 		cmfbi = machine_data->fsl_diu_info[4]->par;
 		if (cmfbi->count > 0)	/* AOI1 is open */
-			out_be32(&hw->desc[2], cmfbi->ad->paddr);
+			wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr);
 					/* move AOI1 to the first */
 		else			/* AOI1 was closed */
-			out_be32(&hw->desc[2],
-				machine_data->dummy_ad->paddr);
+			wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
 					/* close AOI 0 */
 		break;
 	case 2:					/* plane 1 AOI 1 */
@@ -421,7 +431,7 @@ static int fsl_diu_disable_panel(struct fb_info *info)
 					/* AOI0 is open, must be the first */
 				pmfbi->ad->next_ad = 0;
 		} else			/* AOI1 is the first in the chain */
-			out_be32(&hw->desc[1], machine_data->dummy_ad->paddr);
+			wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
 					/* close AOI 1 */
 		break;
 	case 4:					/* plane 2 AOI 1 */
@@ -432,7 +442,7 @@ static int fsl_diu_disable_panel(struct fb_info *info)
 				/* AOI0 is open, must be the first */
 				pmfbi->ad->next_ad = 0;
 		} else		/* AOI1 is the first in the chain */
-			out_be32(&hw->desc[2], machine_data->dummy_ad->paddr);
+			wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
 				/* close AOI 1 */
 		break;
 	default:
@@ -1100,6 +1110,10 @@ static int fsl_diu_open(struct fb_info *info, int user)
 	struct mfb_info *mfbi = info->par;
 	int res = 0;
 
+	/* free boot splash memory on first /dev/fb0 open */
+	if (!mfbi->index && diu_ops.release_bootmem)
+		diu_ops.release_bootmem();
+
 	spin_lock(&diu_lock);
 	mfbi->count++;
 	if (mfbi->count == 1) {
@@ -1173,18 +1187,30 @@ static int __devinit install_fb(struct fb_info *info)
 	int rc;
 	struct mfb_info *mfbi = info->par;
 	const char *aoi_mode, *init_aoi_mode = "320x240";
+	struct fb_videomode *db = fsl_diu_mode_db;
+	unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
+	int has_default_mode = 1;
 
 	if (init_fbinfo(info))
 		return -EINVAL;
 
-	if (mfbi->index == 0)	/* plane 0 */
+	if (mfbi->index == 0) {	/* plane 0 */
+		if (mfbi->edid_data) {
+			/* Now build modedb from EDID */
+			fb_edid_to_monspecs(mfbi->edid_data, &info->monspecs);
+			fb_videomode_to_modelist(info->monspecs.modedb,
+						 info->monspecs.modedb_len,
+						 &info->modelist);
+			db = info->monspecs.modedb;
+			dbsize = info->monspecs.modedb_len;
+		}
 		aoi_mode = fb_mode;
-	else
+	} else {
 		aoi_mode = init_aoi_mode;
+	}
 	pr_debug("mode used = %s\n", aoi_mode);
-	rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
-	     ARRAY_SIZE(fsl_diu_mode_db), &fsl_diu_default_mode, default_bpp);
-
+	rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize,
+			  &fsl_diu_default_mode, default_bpp);
 	switch (rc) {
 	case 1:
 		pr_debug("using mode specified in @mode\n");
@@ -1202,10 +1228,50 @@ static int __devinit install_fb(struct fb_info *info)
 	default:
 		pr_debug("rc = %d\n", rc);
 		pr_debug("failed to find mode\n");
-		return -EINVAL;
+		/*
+		 * For plane 0 we continue and look into
+		 * driver's internal modedb.
+		 */
+		if (mfbi->index == 0 && mfbi->edid_data)
+			has_default_mode = 0;
+		else
+			return -EINVAL;
 		break;
 	}
 
+	if (!has_default_mode) {
+		rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
+				  ARRAY_SIZE(fsl_diu_mode_db),
+				  &fsl_diu_default_mode,
+				  default_bpp);
+		if (rc > 0 && rc < 5)
+			has_default_mode = 1;
+	}
+
+	/* Still not found, use preferred mode from database if any */
+	if (!has_default_mode && info->monspecs.modedb) {
+		struct fb_monspecs *specs = &info->monspecs;
+		struct fb_videomode *modedb = &specs->modedb[0];
+
+		/*
+		 * Get preferred timing. If not found,
+		 * first mode in database will be used.
+		 */
+		if (specs->misc & FB_MISC_1ST_DETAIL) {
+			int i;
+
+			for (i = 0; i < specs->modedb_len; i++) {
+				if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
+					modedb = &specs->modedb[i];
+					break;
+				}
+			}
+		}
+
+		info->var.bits_per_pixel = default_bpp;
+		fb_videomode_to_var(&info->var, modedb);
+	}
+
 	pr_debug("xres_virtual %d\n", info->var.xres_virtual);
 	pr_debug("bits_per_pixel %d\n", info->var.bits_per_pixel);
 
@@ -1244,6 +1310,9 @@ static void uninstall_fb(struct fb_info *info)
 	if (!mfbi->registered)
 		return;
 
+	if (mfbi->index == 0)
+		kfree(mfbi->edid_data);
+
 	unregister_framebuffer(info);
 	unmap_video_memory(info);
 	if (&info->cmap)
@@ -1427,6 +1496,7 @@ static int __devinit fsl_diu_probe(struct of_device *ofdev,
 	int ret, i, error = 0;
 	struct resource res;
 	struct fsl_diu_data *machine_data;
+	int diu_mode;
 
 	machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
 	if (!machine_data)
@@ -1443,6 +1513,17 @@ static int __devinit fsl_diu_probe(struct of_device *ofdev,
 		mfbi = machine_data->fsl_diu_info[i]->par;
 		memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
 		mfbi->parent = machine_data;
+
+		if (mfbi->index == 0) {
+			const u8 *prop;
+			int len;
+
+			/* Get EDID */
+			prop = of_get_property(np, "edid", &len);
+			if (prop && len == EDID_LENGTH)
+				mfbi->edid_data = kmemdup(prop, EDID_LENGTH,
+							  GFP_KERNEL);
+		}
 	}
 
 	ret = of_address_to_resource(np, 0, &res);
@@ -1463,7 +1544,9 @@ static int __devinit fsl_diu_probe(struct of_device *ofdev,
 		goto error2;
 	}
 
-	out_be32(&dr.diu_reg->diu_mode, 0);		/* disable DIU anyway*/
+	diu_mode = in_be32(&dr.diu_reg->diu_mode);
+	if (diu_mode != MFB_MODE1)
+		out_be32(&dr.diu_reg->diu_mode, 0);	/* disable DIU */
 
 	/* Get the IRQ of the DIU */
 	machine_data->irq = irq_of_parse_and_map(np, 0);
@@ -1511,7 +1594,13 @@ static int __devinit fsl_diu_probe(struct of_device *ofdev,
 	machine_data->dummy_ad->offset_xyd = 0;
 	machine_data->dummy_ad->next_ad = 0;
 
-	out_be32(&dr.diu_reg->desc[0], machine_data->dummy_ad->paddr);
+	/*
+	 * Let DIU display splash screen if it was pre-initialized
+	 * by the bootloader, set dummy area descriptor otherwise.
+	 */
+	if (diu_mode != MFB_MODE1)
+		out_be32(&dr.diu_reg->desc[0], machine_data->dummy_ad->paddr);
+
 	out_be32(&dr.diu_reg->desc[1], machine_data->dummy_ad->paddr);
 	out_be32(&dr.diu_reg->desc[2], machine_data->dummy_ad->paddr);