5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* 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
", 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;
writel(offset, ccb->mii + 0x00);
bcma_wait_reg(bus, ccb->mii + 0x00, 0x0100, 0x0000, 100);
writel(value, ccb->mii + 0x04);
bcma_wait_reg(bus, ccb->mii + 0x00, 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_nocache(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);
}
|