/* * Broadcom specific AMBA * ChipCommon B Unit driver * * Copyright 2014, Hauke Mehrtens <hauke@hauke-m.de> * * Licensed under the GNU/GPL. See COPYING for details. */ #include "bcma_private.h"#include <linux/export.h>#include <linux/bcma/bcma.h> static bool bcma_wait_reg(struct bcma_bus *bus, void __iomem *addr, u32 mask,			  u32 value, int timeout){	unsigned long deadline = jiffies + timeout;	u32 val; 	do {		val = readl(addr);		if ((val & mask) == value)			return true;		cpu_relax();		udelay(10);	} while (!time_after_eq(jiffies, deadline)); 	bcma_err(bus, "Timeout waiting for register %p\n", addr); 	return false;} void bcma_chipco_b_mii_write(struct bcma_drv_cc_b *ccb, u32 offset, u32 value){	struct bcma_bus *bus = ccb->core->bus;	void __iomem *mii = ccb->mii; 	writel(offset, mii + BCMA_CCB_MII_MNG_CTL);	bcma_wait_reg(bus, mii + BCMA_CCB_MII_MNG_CTL, 0x0100, 0x0000, 100);	writel(value, mii + BCMA_CCB_MII_MNG_CMD_DATA);	bcma_wait_reg(bus, mii + BCMA_CCB_MII_MNG_CTL, 0x0100, 0x0000, 100);}EXPORT_SYMBOL_GPL(bcma_chipco_b_mii_write); int bcma_core_chipcommon_b_init(struct bcma_drv_cc_b *ccb){	if (ccb->setup_done)		return 0; 	ccb->setup_done = 1;	ccb->mii = ioremap(ccb->core->addr_s[1], BCMA_CORE_SIZE);	if (!ccb->mii)		return -ENOMEM; 	return 0;} void bcma_core_chipcommon_b_free(struct bcma_drv_cc_b *ccb){	if (ccb->mii)		iounmap(ccb->mii);}