Commit df63fe76 authored by Alexandre Pereira da Silva's avatar Alexandre Pereira da Silva Committed by David Woodhouse
Browse files

mtd: lpc32xx_slc: Make wp gpio optional 



This patch supports missing wp gpio.

Signed-off-by: default avatarAlexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: default avatarRoland Stigge <stigge@antcom.de>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
parent 1c7b874d

drivers/mtd/nand/lpc32xx_slc.c

+7 −4
Original line number Diff line number Diff line
@@ -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;

};
@@ -295,6 +295,7 @@ static int lpc32xx_nand_device_ready(struct mtd_info *mtd) 
 */

static void lpc32xx_wp_enable(struct lpc32xx_nand_host *host)

{

	if (gpio_is_valid(host->ncfg->wp_gpio))

		gpio_set_value(host->ncfg->wp_gpio, 0);

}
@@ -303,6 +304,7 @@ static void lpc32xx_wp_enable(struct lpc32xx_nand_host *host) 
 */

static void lpc32xx_wp_disable(struct lpc32xx_nand_host *host)

{

	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;

	}

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