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ssb-pcmcia: IRQ and DMA related fixes

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Here come some IRQ and DMA related fixes for the ssb PCMCIA-host code.
Not much to say, actually. I think the patch explains itself.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2008-03-28 10:34:55 +01:00 committed by John W. Linville
parent 2473670163
commit 9788ba7500
2 changed files with 23 additions and 15 deletions
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2
drivers/ssb/main.c
View File

@ -1064,9 +1064,9 @@ u32 ssb_dma_translation(struct ssb_device *dev)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_SSB:
case SSB_BUSTYPE_PCMCIA:
return 0;
case SSB_BUSTYPE_PCI:
case SSB_BUSTYPE_PCMCIA:
return SSB_PCI_DMA;
}
return 0;

36
drivers/ssb/pcmcia.c
View File

@ -28,11 +28,6 @@
/* PCMCIA configuration registers */
#define SSB_PCMCIA_CORECTL 0x00
#define SSB_PCMCIA_CORECTL_RESET 0x80 /* Core reset */
#define SSB_PCMCIA_CORECTL_IRQEN 0x04 /* IRQ enable */
#define SSB_PCMCIA_CORECTL_FUNCEN 0x01 /* Function enable */
#define SSB_PCMCIA_CORECTL2 0x80
#define SSB_PCMCIA_ADDRESS0 0x2E
#define SSB_PCMCIA_ADDRESS1 0x30
#define SSB_PCMCIA_ADDRESS2 0x32
@ -671,6 +666,24 @@ static DEVICE_ATTR(ssb_sprom, 0600,
ssb_pcmcia_attr_sprom_show,
ssb_pcmcia_attr_sprom_store);
static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor)
{
u8 val;
int err;
err = ssb_pcmcia_cfg_read(bus, cor, &val);
if (err)
return err;
val &= ~COR_SOFT_RESET;
val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ;
err = ssb_pcmcia_cfg_write(bus, cor, val);
if (err)
return err;
msleep(40);
return 0;
}
void ssb_pcmcia_exit(struct ssb_bus *bus)
{
if (bus->bustype != SSB_BUSTYPE_PCMCIA)
@ -681,7 +694,6 @@ void ssb_pcmcia_exit(struct ssb_bus *bus)
int ssb_pcmcia_init(struct ssb_bus *bus)
{
u8 val, offset;
int err;
if (bus->bustype != SSB_BUSTYPE_PCMCIA)
@ -691,16 +703,12 @@ int ssb_pcmcia_init(struct ssb_bus *bus)
* bus->mapped_pcmcia_seg with hardware state. */
ssb_pcmcia_switch_segment(bus, 0);
/* Init IRQ routing */
if (bus->chip_id == 0x4306)
offset = SSB_PCMCIA_CORECTL;
else
offset = SSB_PCMCIA_CORECTL2;
err = ssb_pcmcia_cfg_read(bus, offset, &val);
/* Init the COR register. */
err = ssb_pcmcia_cor_setup(bus, CISREG_COR);
if (err)
goto error;
val |= SSB_PCMCIA_CORECTL_IRQEN | SSB_PCMCIA_CORECTL_FUNCEN;
err = ssb_pcmcia_cfg_write(bus, offset, val);
/* Some cards also need this register to get poked. */
err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80);
if (err)
goto error;