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ssb: Implement SDIO host bus support

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Add support for communicating with a Sonics Silicon Backplane through a
SDIO interface, as found in the Nintendo Wii WLAN daughter card.

The Nintendo Wii WLAN card includes a custom Broadcom 4318 chip with
a SDIO host interface.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Albert Herranz
2009-09-08 19:30:12 +02:00
committed by John W. Linville
parent f020979d5d
commit 24ea602e18
7 changed files with 756 additions and 3 deletions
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11
drivers/ssb/scan.c
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@@ -175,6 +175,9 @@ static u32 scan_read32(struct ssb_bus *bus, u8 current_coreidx,
} else
ssb_pcmcia_switch_segment(bus, 0);
break;
case SSB_BUSTYPE_SDIO:
offset += current_coreidx * SSB_CORE_SIZE;
return ssb_sdio_scan_read32(bus, offset);
}
return readl(bus->mmio + offset);
}
@@ -188,6 +191,8 @@ static int scan_switchcore(struct ssb_bus *bus, u8 coreidx)
return ssb_pci_switch_coreidx(bus, coreidx);
case SSB_BUSTYPE_PCMCIA:
return ssb_pcmcia_switch_coreidx(bus, coreidx);
case SSB_BUSTYPE_SDIO:
return ssb_sdio_scan_switch_coreidx(bus, coreidx);
}
return 0;
}
@@ -206,6 +211,8 @@ void ssb_iounmap(struct ssb_bus *bus)
SSB_BUG_ON(1); /* Can't reach this code. */
#endif
break;
case SSB_BUSTYPE_SDIO:
break;
}
bus->mmio = NULL;
bus->mapped_device = NULL;
@@ -230,6 +237,10 @@ static void __iomem *ssb_ioremap(struct ssb_bus *bus,
SSB_BUG_ON(1); /* Can't reach this code. */
#endif
break;
case SSB_BUSTYPE_SDIO:
/* Nothing to ioremap in the SDIO case, just fake it */
mmio = (void __iomem *)baseaddr;
break;
}
return mmio;