ARM: pxa: Add Balloon3 NAND ready check

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/balloon3.c

@@ -612,9 +612,13 @@ static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
 		BALLOON3_NAND_CONTROL_REG);
 }
 
+static int balloon3_nand_dev_ready(struct mtd_info *mtd)
+{
+	return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
+}
+
 static int balloon3_nand_probe(struct platform_device *pdev)
 {
-	void __iomem *temp_map;
 	uint16_t ver;
 	int ret;
 
@@ -684,7 +688,7 @@ struct platform_nand_data balloon3_nand_pdata = {
 	},
 	.ctrl = {
 		.hwcontrol	= 0,
-		.dev_ready	= 0,
+		.dev_ready	= balloon3_nand_dev_ready,
 		.select_chip	= balloon3_nand_select_chip,
 		.cmd_ctrl	= balloon3_nand_cmd_ctl,
 		.probe		= balloon3_nand_probe,

arch/arm/mach-pxa/include/mach/balloon3.h

@@ -37,7 +37,7 @@ enum balloon3_features {
 #define	BALLOON3_NAND_BASE		(PXA_CS4_PHYS + 0x00e00000)
 #define	BALLOON3_NAND_IO_REG		(BALLOON3_FPGA_VIRT + 0x00e00000)
 #define	BALLOON3_NAND_CONTROL2_REG	(BALLOON3_FPGA_VIRT + 0x00e00010)
-#define	BALLOON3_NAND_STAT_REG		(BALLOON3_FPGA_VIRT + 0x00e00010)
+#define	BALLOON3_NAND_STAT_REG		(BALLOON3_FPGA_VIRT + 0x00e00014)
 #define	BALLOON3_NAND_CONTROL_REG	(BALLOON3_FPGA_VIRT + 0x00e00014)
 
 /* fpga/cpld interrupt control register */