From 2e618261c96d72e5c5409d134d6d93e679683ab8 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Wed, 29 Feb 2012 18:11:56 +0530 Subject: ARM: OMAP2+: nand: unify init functions Helper function for updating nand platform data has been added the capability to take timing structure arguement. Usage of omap_nand_flash_init() has been replaced by modifed one, omap_nand_flash_init was doing things similar to board_nand_init except that NAND CS# were being acquired based on bootloader setting. As CS# is hardwired for a given board, acquiring gpmc CS# has been removed, and updated with the value on board. NAND CS# used in beagle board & omap3evm was found to be CS0. Thomas Weber reported that value of devkit8000 to be CS0. Overo board was found to be using CS0 based on u-boot, while google grep says omap3touchbook too has CS0. Signed-off-by: Afzal Mohammed Reviewed-by: Jon Hunter Acked-by: Igor Grinberg --- arch/arm/mach-omap2/common-board-devices.c | 45 ------------------------------ 1 file changed, 45 deletions(-) (limited to 'arch/arm/mach-omap2/common-board-devices.c') diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c index 48daac2581b4..90e0597667b9 100644 --- a/arch/arm/mach-omap2/common-board-devices.c +++ b/arch/arm/mach-omap2/common-board-devices.c @@ -96,48 +96,3 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce, { } #endif - -#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE) -static struct omap_nand_platform_data nand_data; - -void __init omap_nand_flash_init(int options, struct mtd_partition *parts, - int nr_parts) -{ - u8 cs = 0; - u8 nandcs = GPMC_CS_NUM + 1; - - /* find out the chip-select on which NAND exists */ - while (cs < GPMC_CS_NUM) { - u32 ret = 0; - ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); - - if ((ret & 0xC00) == 0x800) { - printk(KERN_INFO "Found NAND on CS%d\n", cs); - if (nandcs > GPMC_CS_NUM) - nandcs = cs; - } - cs++; - } - - if (nandcs > GPMC_CS_NUM) { - pr_info("NAND: Unable to find configuration in GPMC\n"); - return; - } - - if (nandcs < GPMC_CS_NUM) { - nand_data.cs = nandcs; - nand_data.parts = parts; - nand_data.nr_parts = nr_parts; - nand_data.devsize = options; - - printk(KERN_INFO "Registering NAND on CS%d\n", nandcs); - if (gpmc_nand_init(&nand_data) < 0) - printk(KERN_ERR "Unable to register NAND device\n"); - } -} -#else -void __init omap_nand_flash_init(int options, struct mtd_partition *parts, - int nr_parts) -{ -} -#endif -- cgit v1.2.3