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bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses 

These will be used to abstract out chip-to-chip differences.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Kevin Cernekee 2014-11-25 16:49:50 -08:00 committed by Florian Fainelli
parent dd1d78a11a
commit 2b53eadcea
1 changed files with 17 additions and 7 deletions
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24
drivers/bus/brcmstb_gisb.c
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@ -54,6 +54,16 @@ struct brcmstb_gisb_arb_device {
static LIST_HEAD(brcmstb_gisb_arb_device_list);
static u32 gisb_read(struct brcmstb_gisb_arb_device *gdev, int reg)
{
return ioread32(gdev->base + reg);
}
static void gisb_write(struct brcmstb_gisb_arb_device *gdev, u32 val, int reg)
{
iowrite32(val, gdev->base + reg);
}
static ssize_t gisb_arb_get_timeout(struct device *dev,
struct device_attribute *attr,
char *buf)
@ -63,7 +73,7 @@ static ssize_t gisb_arb_get_timeout(struct device *dev,
u32 timeout;
mutex_lock(&gdev->lock);
timeout = ioread32(gdev->base + ARB_TIMER);
timeout = gisb_read(gdev, ARB_TIMER);
mutex_unlock(&gdev->lock);
return sprintf(buf, "%d", timeout);
@ -85,7 +95,7 @@ static ssize_t gisb_arb_set_timeout(struct device *dev,
return -EINVAL;
mutex_lock(&gdev->lock);
iowrite32(val, gdev->base + ARB_TIMER);
gisb_write(gdev, val, ARB_TIMER);
mutex_unlock(&gdev->lock);
return count;
@ -112,18 +122,18 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
const char *m_name;
char m_fmt[11];
cap_status = ioread32(gdev->base + ARB_ERR_CAP_STATUS);
cap_status = gisb_read(gdev, ARB_ERR_CAP_STATUS);
/* Invalid captured address, bail out */
if (!(cap_status & ARB_ERR_CAP_STATUS_VALID))
return 1;
/* Read the address and master */
arb_addr = ioread32(gdev->base + ARB_ERR_CAP_ADDR) & 0xffffffff;
arb_addr = gisb_read(gdev, ARB_ERR_CAP_ADDR) & 0xffffffff;
#if (IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
arb_addr |= (u64)ioread32(gdev->base + ARB_ERR_CAP_HI_ADDR) << 32;
arb_addr |= (u64)gisb_read(gdev, ARB_ERR_CAP_HI_ADDR) << 32;
#endif
master = ioread32(gdev->base + ARB_ERR_CAP_MASTER);
master = gisb_read(gdev, ARB_ERR_CAP_MASTER);
m_name = brcmstb_gisb_master_to_str(gdev, master);
if (!m_name) {
@ -138,7 +148,7 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
m_name);
/* clear the GISB error */
iowrite32(ARB_ERR_CAP_CLEAR, gdev->base + ARB_ERR_CAP_CLR);
gisb_write(gdev, ARB_ERR_CAP_CLEAR, ARB_ERR_CAP_CLR);
return 0;
}