2 * Broadcom specific AMBA
3 * ChipCommon B Unit driver
5 * Copyright 2014, Hauke Mehrtens <hauke@hauke-m.de>
7 * Licensed under the GNU/GPL. See COPYING for details.
10 #include "bcma_private.h"
11 #include <linux/export.h>
12 #include <linux/bcma/bcma.h>
14 static bool bcma_wait_reg(struct bcma_bus *bus, void __iomem *addr, u32 mask,
15 u32 value, int timeout)
17 unsigned long deadline = jiffies + timeout;
22 if ((val & mask) == value)
26 } while (!time_after_eq(jiffies, deadline));
28 bcma_err(bus, "Timeout waiting for register %p\n", addr);
33 void bcma_chipco_b_mii_write(struct bcma_drv_cc_b *ccb, u32 offset, u32 value)
35 struct bcma_bus *bus = ccb->core->bus;
36 void __iomem *mii = ccb->mii;
38 writel(offset, mii + BCMA_CCB_MII_MNG_CTL);
39 bcma_wait_reg(bus, mii + BCMA_CCB_MII_MNG_CTL, 0x0100, 0x0000, 100);
40 writel(value, mii + BCMA_CCB_MII_MNG_CMD_DATA);
41 bcma_wait_reg(bus, mii + BCMA_CCB_MII_MNG_CTL, 0x0100, 0x0000, 100);
43 EXPORT_SYMBOL_GPL(bcma_chipco_b_mii_write);
45 int bcma_core_chipcommon_b_init(struct bcma_drv_cc_b *ccb)
51 ccb->mii = ioremap_nocache(ccb->core->addr_s[1], BCMA_CORE_SIZE);
58 void bcma_core_chipcommon_b_free(struct bcma_drv_cc_b *ccb)