From 8870e4599689a879051f945c97551309d23ff176 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Tue, 9 Apr 2013 21:06:08 +0000 Subject: imx: Move some i.MX common functions into the imx-common directory This patch moves the following functions into the imx-common directory: - mxs_wait_mask_set() - mxs_wait_mask_clr() - mxs_reset_block() These are currently used by i.MX28. But the upcoming GPMI NAND port for i.MX6 will also use these functions. So lets move them to a common location to re-use them. Signed-off-by: Stefan Roese Cc: Stefano Babic Cc: Marek Vasut Cc: Fabio Estevam --- arch/arm/cpu/arm926ejs/mxs/mxs.c | 63 ---------------------------------------- 1 file changed, 63 deletions(-) (limited to 'arch/arm/cpu/arm926ejs') diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c index 6616f4e..a5e388b 100644 --- a/arch/arm/cpu/arm926ejs/mxs/mxs.c +++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c @@ -39,12 +39,6 @@ DECLARE_GLOBAL_DATA_PTR; -/* 1 second delay should be plenty of time for block reset. */ -#define RESET_MAX_TIMEOUT 1000000 - -#define MXS_BLOCK_SFTRST (1 << 31) -#define MXS_BLOCK_CLKGATE (1 << 30) - /* Lowlevel init isn't used on i.MX28, so just have a dummy here */ inline void lowlevel_init(void) {} @@ -82,63 +76,6 @@ void enable_caches(void) #endif } -int mxs_wait_mask_set(struct mxs_register_32 *reg, uint32_t mask, unsigned - int timeout) -{ - while (--timeout) { - if ((readl(®->reg) & mask) == mask) - break; - udelay(1); - } - - return !timeout; -} - -int mxs_wait_mask_clr(struct mxs_register_32 *reg, uint32_t mask, unsigned - int timeout) -{ - while (--timeout) { - if ((readl(®->reg) & mask) == 0) - break; - udelay(1); - } - - return !timeout; -} - -int mxs_reset_block(struct mxs_register_32 *reg) -{ - /* Clear SFTRST */ - writel(MXS_BLOCK_SFTRST, ®->reg_clr); - - if (mxs_wait_mask_clr(reg, MXS_BLOCK_SFTRST, RESET_MAX_TIMEOUT)) - return 1; - - /* Clear CLKGATE */ - writel(MXS_BLOCK_CLKGATE, ®->reg_clr); - - /* Set SFTRST */ - writel(MXS_BLOCK_SFTRST, ®->reg_set); - - /* Wait for CLKGATE being set */ - if (mxs_wait_mask_set(reg, MXS_BLOCK_CLKGATE, RESET_MAX_TIMEOUT)) - return 1; - - /* Clear SFTRST */ - writel(MXS_BLOCK_SFTRST, ®->reg_clr); - - if (mxs_wait_mask_clr(reg, MXS_BLOCK_SFTRST, RESET_MAX_TIMEOUT)) - return 1; - - /* Clear CLKGATE */ - writel(MXS_BLOCK_CLKGATE, ®->reg_clr); - - if (mxs_wait_mask_clr(reg, MXS_BLOCK_CLKGATE, RESET_MAX_TIMEOUT)) - return 1; - - return 0; -} - void mx28_fixup_vt(uint32_t start_addr) { uint32_t *vt = (uint32_t *)0x20; -- cgit v1.1