diff options
| author | Alexandre Pereira da Silva <aletes.xgr@gmail.com> | 2012-06-27 17:51:13 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-07-06 18:24:56 +0100 |
| commit | df63fe7657d75424f58b41ac079ed8bc4b4676fb (patch) | |
| tree | 6724489e5c00d99727d3535fc8948f39aeaa9eb1 /drivers/mtd/nand/lpc32xx_slc.c | |
| parent | 1c7b874d33b463f7150b1ab4617f000af9b327fd (diff) | |
mtd: lpc32xx_slc: Make wp gpio optional
This patch supports missing wp gpio.
Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd/nand/lpc32xx_slc.c')
| -rw-r--r-- | drivers/mtd/nand/lpc32xx_slc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c index 1d837b92ac7..1577a9b0d0c 100644 --- a/drivers/mtd/nand/lpc32xx_slc.c +++ b/drivers/mtd/nand/lpc32xx_slc.c @@ -192,7 +192,7 @@ struct lpc32xx_nand_cfg_slc { uint32_t rhold; uint32_t rsetup; bool use_bbt; - unsigned wp_gpio; + int wp_gpio; struct mtd_partition *parts; unsigned num_parts; }; @@ -295,7 +295,8 @@ static int lpc32xx_nand_device_ready(struct mtd_info *mtd) */ static void lpc32xx_wp_enable(struct lpc32xx_nand_host *host) { - gpio_set_value(host->ncfg->wp_gpio, 0); + if (gpio_is_valid(host->ncfg->wp_gpio)) + gpio_set_value(host->ncfg->wp_gpio, 0); } /* @@ -303,7 +304,8 @@ static void lpc32xx_wp_enable(struct lpc32xx_nand_host *host) */ static void lpc32xx_wp_disable(struct lpc32xx_nand_host *host) { - gpio_set_value(host->ncfg->wp_gpio, 1); + if (gpio_is_valid(host->ncfg->wp_gpio)) + gpio_set_value(host->ncfg->wp_gpio, 1); } /* @@ -819,7 +821,8 @@ static int __devinit lpc32xx_nand_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Missing platform data\n"); return -ENOENT; } - if (gpio_request(host->ncfg->wp_gpio, "NAND WP")) { + if (gpio_is_valid(host->ncfg->wp_gpio) && + gpio_request(host->ncfg->wp_gpio, "NAND WP")) { dev_err(&pdev->dev, "GPIO not available\n"); return -EBUSY; } |