From 86771720e46b227a4ab4238594ed87dd96b3b5d6 Mon Sep 17 00:00:00 2001 From: andreast Date: Mon, 19 Mar 2012 18:03:20 +0000 Subject: Provide a fix for certain PowerMacs where the U3 i2c lacks the interrupt info. Tested by: Robert Hish MFC after: 1 week --- sys/powerpc/powermac/uninorth.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'sys') diff --git a/sys/powerpc/powermac/uninorth.c b/sys/powerpc/powermac/uninorth.c index 86b4cd5..e9ab291 100644 --- a/sys/powerpc/powermac/uninorth.c +++ b/sys/powerpc/powermac/uninorth.c @@ -262,9 +262,11 @@ unin_chip_attach(device_t dev) struct unin_chip_devinfo *dinfo; phandle_t root; phandle_t child; + phandle_t iparent; device_t cdev; char compat[32]; - u_int reg[3]; + char name[32]; + u_int irq, reg[3]; int error, i = 0; sc = device_get_softc(dev); @@ -315,6 +317,33 @@ unin_chip_attach(device_t dev) dinfo->udi_ninterrupts = 0; unin_chip_add_intr(child, dinfo); + /* + * Some Apple machines do have a bug in OF, they miss + * the interrupt entries on the U3 I2C node. That means they + * do not have an entry with number of interrupts nor the + * entry of the interrupt parent handle. + * We define an interrupt and hardwire it to the /u3/mpic + * handle. + */ + + if (OF_getprop(child, "name", name, sizeof(name)) <= 0) + device_printf(dev, "device has no name!\n"); + if (dinfo->udi_ninterrupts == 0 && + (strcmp(name, "i2c-bus") == 0 || + strcmp(name, "i2c") == 0)) { + if (OF_getprop(child, "interrupt-parent", &iparent, + sizeof(iparent)) <= 0) { + iparent = OF_finddevice("/u3/mpic"); + device_printf(dev, "Set /u3/mpic as iparent!\n"); + } + /* Add an interrupt number 0 to the parent. */ + irq = MAP_IRQ(iparent, 0); + resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, + dinfo->udi_ninterrupts, irq, irq, 1); + dinfo->udi_interrupts[dinfo->udi_ninterrupts] = irq; + dinfo->udi_ninterrupts++; + } + unin_chip_add_reg(child, dinfo); cdev = device_add_child(dev, NULL, -1); -- cgit v1.1