[PATCH] OneNAND: Sync. Burst Read support
Add OneNAND Sync. Burst Read support
Tested with OMAP platform
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index bcce22a..e874895 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -379,6 +379,35 @@
}
/**
+ * onenand_sync_read_bufferram - [OneNAND Interface] Read the bufferram area with Sync. Burst mode
+ * @param mtd MTD data structure
+ * @param area BufferRAM area
+ * @param buffer the databuffer to put/get data
+ * @param offset offset to read from or write to
+ * @param count number of bytes to read/write
+ *
+ * Read the BufferRAM area with Sync. Burst Mode
+ */
+static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area,
+ unsigned char *buffer, int offset, size_t count)
+{
+ struct onenand_chip *this = mtd->priv;
+ void __iomem *bufferram;
+
+ bufferram = this->base + area;
+
+ bufferram += onenand_bufferram_offset(mtd, area);
+
+ this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ);
+
+ memcpy(buffer, bufferram + offset, count);
+
+ this->mmcontrol(mtd, 0);
+
+ return 0;
+}
+
+/**
* onenand_write_bufferram - [OneNAND Interface] Write the bufferram area
* @param mtd MTD data structure
* @param area BufferRAM area
@@ -1273,8 +1302,8 @@
break;
}
- printk(KERN_DEBUG "OneNAND Manufacturer: %s\n",
- onenand_manuf_ids[i].name);
+ printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n",
+ onenand_manuf_ids[i].name, manuf);
return (i != ONENAND_MFR_UNKNOWN);
}
@@ -1385,6 +1414,12 @@
if (onenand_probe(mtd))
return -ENXIO;
+ /* Set Sync. Burst Read after probing */
+ if (this->mmcontrol) {
+ printk(KERN_INFO "OneNAND Sync. Burst Read support\n");
+ this->read_bufferram = onenand_sync_read_bufferram;
+ }
+
this->state = FL_READY;
init_waitqueue_head(&this->wq);
spin_lock_init(&this->chip_lock);