From: Ladislav Michl <ladis@linux-mips.org>
Date: Tue, 12 Jul 2016 18:28:18 +0000 (+0200)
Subject: armv7: simplify identify_nand_chip
X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=9a9d3946399e91e0ff6de7e4678a3b242b66af74;p=u-boot.git

armv7: simplify identify_nand_chip

Use newly introduced function

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
---

diff --git a/arch/arm/cpu/armv7/omap3/spl_id_nand.c b/arch/arm/cpu/armv7/omap3/spl_id_nand.c
index 26d3aa42c1..0e2f0a2f6d 100644
--- a/arch/arm/cpu/armv7/omap3/spl_id_nand.c
+++ b/arch/arm/cpu/armv7/omap3/spl_id_nand.c
@@ -13,13 +13,13 @@
  */
 
 #include <common.h>
+#include <jffs2/load_kernel.h>
 #include <linux/mtd/nand.h>
+#include <linux/mtd/omap_gpmc.h>
 #include <asm/io.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/mem.h>
 
-static struct gpmc *gpmc_config = (struct gpmc *)GPMC_BASE;
-
 /*
  * Many boards will want to know the results of the NAND_CMD_READID command
  * in order to decide what to do about DDR initialization.  This function
@@ -31,40 +31,27 @@ int identify_nand_chip(int *mfr, int *id)
 	int loops = 1000;
 
 	/* Make sure that we have setup GPMC for NAND correctly. */
-	writel(M_NAND_GPMC_CONFIG1, &gpmc_config->cs[0].config1);
-	writel(M_NAND_GPMC_CONFIG2, &gpmc_config->cs[0].config2);
-	writel(M_NAND_GPMC_CONFIG3, &gpmc_config->cs[0].config3);
-	writel(M_NAND_GPMC_CONFIG4, &gpmc_config->cs[0].config4);
-	writel(M_NAND_GPMC_CONFIG5, &gpmc_config->cs[0].config5);
-	writel(M_NAND_GPMC_CONFIG6, &gpmc_config->cs[0].config6);
-
-	/*
-	 * Enable the config.  The CS size goes in bits 11:8.  We set
-	 * bit 6 to enable the CS and the base address goes into bits 5:0.
-	 */
-	writel((GPMC_SIZE_128M << 8) | (GPMC_CS_ENABLE << 6) |
-				((NAND_BASE >> 24) & GPMC_BASEADDR_MASK),
-			&gpmc_config->cs[0].config7);
+	set_gpmc_cs0(MTD_DEV_TYPE_NAND);
 
 	sdelay(2000);
 
 	/* Issue a RESET and then READID */
-	writeb(NAND_CMD_RESET, &gpmc_config->cs[0].nand_cmd);
-	writeb(NAND_CMD_STATUS, &gpmc_config->cs[0].nand_cmd);
-	while ((readl(&gpmc_config->cs[0].nand_dat) & NAND_STATUS_READY)
-	                                           != NAND_STATUS_READY) {
+	writeb(NAND_CMD_RESET, &gpmc_cfg->cs[0].nand_cmd);
+	writeb(NAND_CMD_STATUS, &gpmc_cfg->cs[0].nand_cmd);
+	while ((readl(&gpmc_cfg->cs[0].nand_dat) & NAND_STATUS_READY)
+	                                        != NAND_STATUS_READY) {
 		sdelay(100);
 		if (--loops == 0)
 			return 1;
 	}
-	writeb(NAND_CMD_READID, &gpmc_config->cs[0].nand_cmd);
+	writeb(NAND_CMD_READID, &gpmc_cfg->cs[0].nand_cmd);
 
 	/* Set the address to read to 0x0 */
-	writeb(0x0, &gpmc_config->cs[0].nand_adr);
+	writeb(0x0, &gpmc_cfg->cs[0].nand_adr);
 
 	/* Read off the manufacturer and device id. */
-	*mfr = readb(&gpmc_config->cs[0].nand_dat);
-	*id = readb(&gpmc_config->cs[0].nand_dat);
+	*mfr = readb(&gpmc_cfg->cs[0].nand_dat);
+	*id = readb(&gpmc_cfg->cs[0].nand_dat);
 
 	return 0;
 }