diff options
Diffstat (limited to 'arch/arm/mach-netx/pfifo.c')
-rw-r--r-- | arch/arm/mach-netx/pfifo.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/arm/mach-netx/pfifo.c b/arch/arm/mach-netx/pfifo.c deleted file mode 100644 index 2e5cc777329f..000000000000 --- a/arch/arm/mach-netx/pfifo.c +++ /dev/null @@ -1,56 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * arch/arm/mach-netx/pfifo.c - * - * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/io.h> - -#include <mach/hardware.h> -#include <mach/netx-regs.h> -#include <mach/pfifo.h> - -static DEFINE_MUTEX(pfifo_lock); - -static unsigned int pfifo_used = 0; - -int pfifo_request(unsigned int pfifo_mask) -{ - int err = 0; - unsigned int val; - - mutex_lock(&pfifo_lock); - - if (pfifo_mask & pfifo_used) { - err = -EBUSY; - goto out; - } - - pfifo_used |= pfifo_mask; - - val = readl(NETX_PFIFO_RESET); - writel(val | pfifo_mask, NETX_PFIFO_RESET); - writel(val, NETX_PFIFO_RESET); - -out: - mutex_unlock(&pfifo_lock); - return err; -} - -void pfifo_free(unsigned int pfifo_mask) -{ - mutex_lock(&pfifo_lock); - pfifo_used &= ~pfifo_mask; - mutex_unlock(&pfifo_lock); -} - -EXPORT_SYMBOL(pfifo_push); -EXPORT_SYMBOL(pfifo_pop); -EXPORT_SYMBOL(pfifo_fill_level); -EXPORT_SYMBOL(pfifo_empty); -EXPORT_SYMBOL(pfifo_request); -EXPORT_SYMBOL(pfifo_free); |