linux-kernel - [PATCH v6 07/17] mtd: nand: omap: Switch to using GPMC-NAND ops for writebuffer empty check

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Message-ID: <1460023715-19332-8-git-send-email-rogerq@ti.com>
Date:	Thu, 7 Apr 2016 13:08:25 +0300
From:	Roger Quadros <rogerq@...com>
To:	<tony@...mide.com>, <computersforpeace@...il.com>,
	<boris.brezillon@...e-electrons.com>
CC:	<dwmw2@...radead.org>, <ezequiel@...guardiasur.com.ar>,
	<javier@...hile0.org>, <fcooper@...com>, <nsekhar@...com>,
	<linux-mtd@...ts.infradead.org>, <linux-omap@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Roger Quadros <rogerq@...com>
Subject: [PATCH v6 07/17] mtd: nand: omap: Switch to using GPMC-NAND ops for writebuffer empty check

Instead of accessing the gpmc_status register directly start
using the gpmc_nand_ops->nand_writebuffer_empty() helper
to check write buffer empty status.

Signed-off-by: Roger Quadros <rogerq@...com>
Acked-by: Brian Norris <computersforpeace@...il.com>
---
 drivers/mtd/nand/omap2.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index cba9bf0..98023d5 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -291,14 +291,13 @@ static void omap_write_buf8(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct omap_nand_info *info = mtd_to_omap(mtd);
 	u_char *p = (u_char *)buf;
-	u32	status = 0;
+	bool status;
 
 	while (len--) {
 		iowrite8(*p++, info->nand.IO_ADDR_W);
 		/* wait until buffer is available for write */
 		do {
-			status = readl(info->reg.gpmc_status) &
-					STATUS_BUFF_EMPTY;
+			status = info->ops->nand_writebuffer_empty();
 		} while (!status);
 	}
 }
@@ -326,7 +325,7 @@ static void omap_write_buf16(struct mtd_info *mtd, const u_char * buf, int len)
 {
 	struct omap_nand_info *info = mtd_to_omap(mtd);
 	u16 *p = (u16 *) buf;
-	u32	status = 0;
+	bool status;
 	/* FIXME try bursts of writesw() or DMA ... */
 	len >>= 1;
 
@@ -334,8 +333,7 @@ static void omap_write_buf16(struct mtd_info *mtd, const u_char * buf, int len)
 		iowrite16(*p++, info->nand.IO_ADDR_W);
 		/* wait until buffer is available for write */
 		do {
-			status = readl(info->reg.gpmc_status) &
-					STATUS_BUFF_EMPTY;
+			status = info->ops->nand_writebuffer_empty();
 		} while (!status);
 	}
 }
-- 
2.5.0