From bc1a8846862049f435ee4e3d57c86c05b28567ad Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Mon, 5 Jul 2010 04:55:04 -0400
Subject: [PATCH] mtd: nand_plat: add simple GPIO framework DEV_READY option
Make it easy to use GPIOs for the DEV_READY pin by using the common GPIO
framework. Also make the NAND_PLAT_INIT() define optional.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Thomas Chou <thomas@wytron.com.tw>
---
drivers/mtd/nand/nand_plat.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/mtd/nand/nand_plat.c b/drivers/mtd/nand/nand_plat.c
index b35492b9fc..37a0206ad6 100644
--- a/drivers/mtd/nand/nand_plat.c
+++ b/drivers/mtd/nand/nand_plat.c
@@ -16,6 +16,10 @@
#include <common.h>
#include <asm/io.h>
+#ifdef NAND_PLAT_GPIO_DEV_READY
+# include <asm/gpio.h>
+# define NAND_PLAT_DEV_READY(chip) gpio_get_value(NAND_PLAT_GPIO_DEV_READY)
+#endif
#include <nand.h>
@@ -43,7 +47,14 @@ static int plat_dev_ready(struct mtd_info *mtd)
int board_nand_init(struct nand_chip *nand)
{
+#ifdef NAND_PLAT_GPIO_DEV_READY
+ gpio_request(NAND_PLAT_GPIO_DEV_READY, "nand-plat");
+ gpio_direction_input(NAND_PLAT_GPIO_DEV_READY);
+#endif
+
+#ifdef NAND_PLAT_INIT
NAND_PLAT_INIT();
+#endif
nand->cmd_ctrl = plat_cmd_ctrl;
nand->dev_ready = plat_dev_ready;
--
2.39.5