diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2010-07-05 04:55:04 -0400 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2010-07-08 16:52:12 -0500 |
| commit | bc1a8846862049f435ee4e3d57c86c05b28567ad (patch) | |
| tree | 585feea4b8a1fcbacdf2f7bd78300e4367d56529 /drivers | |
| parent | 1445f6ffd5201b1876f1f08cc5fd8b5de2c54628 (diff) | |
| download | u-boot-imx-bc1a8846862049f435ee4e3d57c86c05b28567ad.zip u-boot-imx-bc1a8846862049f435ee4e3d57c86c05b28567ad.tar.gz u-boot-imx-bc1a8846862049f435ee4e3d57c86c05b28567ad.tar.bz2 | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/nand_plat.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_plat.c b/drivers/mtd/nand/nand_plat.c index b35492b..37a0206 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; |