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ahci: add defines for PORT_SCR_STAT register bits

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Replace hard-coded register values with proper defines for PORT_SCR_STAT
register.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring 2013-08-24 10:10:50 -05:00 committed by Tom Rini
parent 796c2ebd6f
commit 2bdb10dbf5
2 changed files with 8 additions and 2 deletions
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5
drivers/block/ahci.c
View file

@ -207,7 +207,8 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
j = 0;
while (j < WAIT_MS_LINKUP) {
tmp = readl(port_mmio + PORT_SCR_STAT);
if ((tmp & 0xf) == 0x3)
tmp &= PORT_SCR_STAT_DET_MASK;
if (tmp == PORT_SCR_STAT_DET_PHYRDY)
break;
udelay(1000);
j++;
@ -258,7 +259,7 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
/* register linkup ports */
tmp = readl(port_mmio + PORT_SCR_STAT);
debug("SATA port %d status: 0x%x\n", i, tmp);
if ((tmp & 0xf) == 0x03)
if ((tmp & PORT_SCR_STAT_DET_MASK) == PORT_SCR_STAT_DET_PHYRDY)
probe_ent->link_port_map |= (0x01 << i);
}

5
include/ahci.h
View file

@ -87,6 +87,11 @@
| PORT_IRQ_DMAS_FIS | PORT_IRQ_PIOS_FIS \
| PORT_IRQ_D2H_REG_FIS
/* PORT_SCR_STAT bits */
#define PORT_SCR_STAT_DET_MASK 0x3
#define PORT_SCR_STAT_DET_COMINIT 0x1
#define PORT_SCR_STAT_DET_PHYRDY 0x3
/* PORT_CMD bits */
#define PORT_CMD_ATAPI (1 << 24) /* Device is ATAPI */
#define PORT_CMD_LIST_ON (1 << 15) /* cmd list DMA engine running */