This patch adds support for PicoPower PT86C523 IRQ router to be used with the in-kernel yenta driver for CardBus. With this patch cardbus works on e.g. Dell Latitude XPi P150CD.
Initial patch for kernel 2.4 series by Sune Mølgaard http://molgaard.org/code/linux-2.4.31-picopower.patch Ported to 2.6.20 by Chmouel Boudjnah (http://www.chmouel.com) Tested and confirmed that it works by Austin Acton. Cleaned up a little for inclusion in a 2.6.21-rc7 & 2.6.21.1 based kernel. Signed-Off-By: Thomas Backlund <[EMAIL PROTECTED]> arch/i386/pci/irq.c | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/pci_ids.h | 3 +++ 2 files changed, 41 insertions(+) diff -Nurp 2.6.21-rc7/arch/i386/pci/irq.c 2.6.21-rc7.picopower/arch/i386/pci/irq.c --- 2.6.21-rc7/arch/i386/pci/irq.c 2007-02-04 20:44:54.000000000 +0200 +++ 2.6.21-rc7.picopower/arch/i386/pci/irq.c 2007-04-24 15:26:21.000000000 +0300 @@ -491,6 +491,24 @@ static int pirq_amd756_set(struct pci_de return 1; } +/* + * PicoPower PT86C523 + */ +static int pirq_pico_get(struct pci_dev *router, struct pci_dev *dev, int pirq) +{ + outb(0x10+((pirq-1)>>1), 0x24); + return ((pirq-1)&1) ? (inb(0x26)>>4) : (inb(0x26)&0xf); +} + +static int pirq_pico_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) +{ + outb(0x10+((pirq-1)>>1), 0x24); + unsigned int x; + x = inb(0x26); + x = ((pirq-1)&1) ? ((x&0x0f)|(irq<<4)) : ((x&0xf0)|(irq)); + outb(x,0x26); +} + #ifdef CONFIG_PCI_BIOS static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) @@ -719,6 +737,25 @@ static __init int amd_router_probe(struc return 1; } +static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) +{ + switch(device) + { + case PCI_DEVICE_ID_PICOPOWER_PT86C523: + r->name = "PicoPower PT86C523"; + r->get = pirq_pico_get; + r->set = pirq_pico_set; + return 1; + + case PCI_DEVICE_ID_PICOPOWER_PT86C523BBP: + r->name = "PicoPower PT86C523 rev. BB+"; + r->get = pirq_pico_get; + r->set = pirq_pico_set; + return 1; + } + return 0; +} + static __initdata struct irq_router_handler pirq_routers[] = { { PCI_VENDOR_ID_INTEL, intel_router_probe }, { PCI_VENDOR_ID_AL, ali_router_probe }, @@ -730,6 +767,7 @@ static __initdata struct irq_router_hand { PCI_VENDOR_ID_VLSI, vlsi_router_probe }, { PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe }, { PCI_VENDOR_ID_AMD, amd_router_probe }, + { PCI_VENDOR_ID_PICOPOWER, pico_router_probe }, /* Someone with docs needs to add the ATI Radeon IGP */ { 0, NULL } }; diff -Nurp 2.6.21-rc7/include/linux/pci_ids.h 2.6.21-rc7.picopower/include/linux/pci_ids.h --- 2.6.21-rc7/include/linux/pci_ids.h 2007-04-24 14:37:59.000000000 +0300 +++ 2.6.21-rc7.picopower/include/linux/pci_ids.h 2007-04-24 15:26:21.000000000 +0300 @@ -819,6 +819,9 @@ #define PCI_DEVICE_ID_UMC_UM8886BF 0x673a #define PCI_DEVICE_ID_UMC_UM8886A 0x886a +#define PCI_VENDOR_ID_PICOPOWER 0x1066 +#define PCI_DEVICE_ID_PICOPOWER_PT86C523 0x0002 +#define PCI_DEVICE_ID_PICOPOWER_PT86C523BBP 0x8002 #define PCI_VENDOR_ID_MYLEX 0x1069 #define PCI_DEVICE_ID_MYLEX_DAC960_P 0x0001
