lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ssb: Implement SDIO host bus support

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

25
include/linux/ssb/ssb.h
View File

@ -238,6 +238,7 @@ enum ssb_bustype {
SSB_BUSTYPE_SSB, /* This SSB bus is the system bus */
SSB_BUSTYPE_PCI, /* SSB is connected to PCI bus */
SSB_BUSTYPE_PCMCIA, /* SSB is connected to PCMCIA bus */
SSB_BUSTYPE_SDIO, /* SSB is connected to SDIO bus */
};
/* board_vendor */
@ -270,8 +271,12 @@ struct ssb_bus {
/* The core in the basic address register window. (PCI bus only) */
struct ssb_device *mapped_device;
/* Currently mapped PCMCIA segment. (bustype == SSB_BUSTYPE_PCMCIA only) */
u8 mapped_pcmcia_seg;
union {
/* Currently mapped PCMCIA segment. (bustype == SSB_BUSTYPE_PCMCIA only) */
u8 mapped_pcmcia_seg;
/* Current SSB base address window for SDIO. */
u32 sdio_sbaddr;
};
/* Lock for core and segment switching.
* On PCMCIA-host busses this is used to protect the whole MMIO access. */
spinlock_t bar_lock;
@ -282,6 +287,11 @@ struct ssb_bus {
struct pci_dev *host_pci;
/* Pointer to the PCMCIA device (only if bustype == SSB_BUSTYPE_PCMCIA). */
struct pcmcia_device *host_pcmcia;
/* Pointer to the SDIO device (only if bustype == SSB_BUSTYPE_SDIO). */
struct sdio_func *host_sdio;
/* See enum ssb_quirks */
unsigned int quirks;
#ifdef CONFIG_SSB_SPROM
/* Mutex to protect the SPROM writing. */
@ -336,6 +346,11 @@ struct ssb_bus {
#endif /* DEBUG */
};
enum ssb_quirks {
/* SDIO connected card requires performing a read after writing a 32-bit value */
SSB_QUIRK_SDIO_READ_AFTER_WRITE32 = (1 << 0),
};
/* The initialization-invariants. */
struct ssb_init_invariants {
/* Versioning information about the PCB. */
@ -366,6 +381,12 @@ extern int ssb_bus_pcmciabus_register(struct ssb_bus *bus,
struct pcmcia_device *pcmcia_dev,
unsigned long baseaddr);
#endif /* CONFIG_SSB_PCMCIAHOST */
#ifdef CONFIG_SSB_SDIOHOST
extern int ssb_bus_sdiobus_register(struct ssb_bus *bus,
struct sdio_func *sdio_func,
unsigned int quirks);
#endif /* CONFIG_SSB_SDIOHOST */
extern void ssb_bus_unregister(struct ssb_bus *bus);