diff options
| author | Michael Buesch <mb@bu3sch.de> | 2008-02-19 17:46:48 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-02-20 20:11:49 -0500 |
| commit | 7cb4461520f307a6e3fb2bb32cb8daee45aa1fae (patch) | |
| tree | 24d287cb729e511285465456cdd0ec02805e9130 /drivers/ssb | |
| parent | 53521d8c90d366191b6c134f88a8ebe83de60614 (diff) | |
| download | kernel_samsung_smdk4412-7cb4461520f307a6e3fb2bb32cb8daee45aa1fae.zip kernel_samsung_smdk4412-7cb4461520f307a6e3fb2bb32cb8daee45aa1fae.tar.gz kernel_samsung_smdk4412-7cb4461520f307a6e3fb2bb32cb8daee45aa1fae.tar.bz2 | |
ssb: Fix pcicore cardbus mode
This fixes the pcicore driver to not die a horrible
crash death when inserting a cardbus card.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/driver_pcicore.c | 28 | ||||
| -rw-r--r-- | drivers/ssb/main.c | 1 |
2 files changed, 27 insertions, 2 deletions
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c index 2faaa90..059452f 100644 --- a/drivers/ssb/driver_pcicore.c +++ b/drivers/ssb/driver_pcicore.c @@ -11,6 +11,7 @@ #include <linux/ssb/ssb.h> #include <linux/pci.h> #include <linux/delay.h> +#include <linux/ssb/ssb_embedded.h> #include "ssb_private.h" @@ -27,6 +28,18 @@ void pcicore_write32(struct ssb_pcicore *pc, u16 offset, u32 value) ssb_write32(pc->dev, offset, value); } +static inline +u16 pcicore_read16(struct ssb_pcicore *pc, u16 offset) +{ + return ssb_read16(pc->dev, offset); +} + +static inline +void pcicore_write16(struct ssb_pcicore *pc, u16 offset, u16 value) +{ + ssb_write16(pc->dev, offset, value); +} + /************************************************** * Code for hostmode operation. **************************************************/ @@ -117,8 +130,10 @@ static u32 get_cfgspace_addr(struct ssb_pcicore *pc, u32 addr = 0; u32 tmp; - if (unlikely(pc->cardbusmode && dev > 1)) + /* We do only have one cardbus device behind the bridge. */ + if (pc->cardbusmode && (dev >= 1)) goto out; + if (bus == 0) { /* Type 0 transaction */ if (unlikely(dev >= SSB_PCI_SLOT_MAX)) @@ -318,7 +333,16 @@ static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc) pcicore_write32(pc, SSB_PCICORE_ARBCTL, val); udelay(1); /* Assertion time demanded by the PCI standard */ - /*TODO cardbus mode */ + if (pc->dev->bus->has_cardbus_slot) { + ssb_dprintk(KERN_INFO PFX "CardBus slot detected\n"); + pc->cardbusmode = 1; + /* GPIO 1 resets the bridge */ + ssb_gpio_out(pc->dev->bus, 1, 1); + ssb_gpio_outen(pc->dev->bus, 1, 1); + pcicore_write16(pc, SSB_PCICORE_SPROM(0), + pcicore_read16(pc, SSB_PCICORE_SPROM(0)) + | 0x0400); + } /* 64MB I/O window */ pcicore_write32(pc, SSB_PCICORE_SBTOPCI0, diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index af07ab2..bedb2b4 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -557,6 +557,7 @@ static int ssb_fetch_invariants(struct ssb_bus *bus, goto out; memcpy(&bus->boardinfo, &iv.boardinfo, sizeof(iv.boardinfo)); memcpy(&bus->sprom, &iv.sprom, sizeof(iv.sprom)); + bus->has_cardbus_slot = iv.has_cardbus_slot; out: return err; } |