X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fpnp%2Fquirks.c;h=7c3236690cc3f04fbaec01b3324dc2910d41b1d8;hb=a4fb2122f1fc4a22bd6a5b8a195b952c2d31c54d;hp=e97ecefe85841c966be495f27588ea128684bc25;hpb=a8c4c20dfa8b28a3c99e33c639d9c2ea5657741e;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c
index e97ecefe858..7c3236690cc 100644
--- a/drivers/pnp/quirks.c
+++ b/drivers/pnp/quirks.c
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/pnp.h>
+#include <linux/io.h>
 #include "base.h"
 
 
@@ -106,6 +107,109 @@ static void quirk_sb16audio_resources(struct pnp_dev *dev)
 	return;
 }
 
+static int quirk_smc_fir_enabled(struct pnp_dev *dev)
+{
+	unsigned long firbase;
+	u8 bank, high, low, chip;
+
+	if (!pnp_port_valid(dev, 1))
+		return 0;
+
+	firbase = pnp_port_start(dev, 1);
+
+	/* Select register bank 3 */
+	bank = inb(firbase + 7);
+	bank &= 0xf0;
+	bank |= 3;
+	outb(bank, firbase + 7);
+
+	high = inb(firbase + 0);
+	low  = inb(firbase + 1);
+	chip = inb(firbase + 2);
+
+	/* This corresponds to the check in smsc_ircc_present() */
+	if (high == 0x10 && low == 0xb8 && (chip == 0xf1 || chip == 0xf2))
+		return 1;
+
+	return 0;
+}
+
+static void quirk_smc_enable(struct pnp_dev *dev)
+{
+	struct resource fir, sir, irq;
+
+	pnp_activate_dev(dev);
+	if (quirk_smc_fir_enabled(dev))
+		return;
+
+	/*
+	 * Sometimes the BIOS claims the device is enabled, but it reports
+	 * the wrong FIR resources or doesn't properly configure ISA or LPC
+	 * bridges on the way to the device.
+	 *
+	 * HP nc6000 and nc8000/nw8000 laptops have known problems like
+	 * this.  Fortunately, they do fix things up if we auto-configure
+	 * the device using its _PRS and _SRS methods.
+	 */
+	dev_err(&dev->dev, "%s not responding at SIR 0x%lx, FIR 0x%lx; "
+		"auto-configuring\n", dev->id->id,
+		(unsigned long) pnp_port_start(dev, 0),
+		(unsigned long) pnp_port_start(dev, 1));
+
+	pnp_disable_dev(dev);
+	pnp_init_resource_table(&dev->res);
+	pnp_auto_config_dev(dev);
+	pnp_activate_dev(dev);
+	if (quirk_smc_fir_enabled(dev)) {
+		dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
+			(unsigned long) pnp_port_start(dev, 0),
+			(unsigned long) pnp_port_start(dev, 1));
+		return;
+	}
+
+	/*
+	 * The Toshiba Portege 4000 _CRS reports the FIR region first,
+	 * followed by the SIR region.  The BIOS will configure the bridge,
+	 * but only if we call _SRS with SIR first, then FIR.  It also
+	 * reports the IRQ as active high, when it is really active low.
+	 */
+	dev_err(&dev->dev, "not responding at SIR 0x%lx, FIR 0x%lx; "
+		"swapping SIR/FIR and reconfiguring\n",
+		(unsigned long) pnp_port_start(dev, 0),
+		(unsigned long) pnp_port_start(dev, 1));
+
+	/*
+	 * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
+	 * these resources any more.
+	 */
+	fir = dev->res.port_resource[0];
+	sir = dev->res.port_resource[1];
+	fir.flags &= ~IORESOURCE_AUTO;
+	sir.flags &= ~IORESOURCE_AUTO;
+
+	irq = dev->res.irq_resource[0];
+	irq.flags &= ~IORESOURCE_AUTO;
+	irq.flags &= ~IORESOURCE_BITS;
+	irq.flags |= IORESOURCE_IRQ_LOWEDGE;
+
+	pnp_disable_dev(dev);
+	dev->res.port_resource[0] = sir;
+	dev->res.port_resource[1] = fir;
+	dev->res.irq_resource[0] = irq;
+	pnp_activate_dev(dev);
+
+	if (quirk_smc_fir_enabled(dev)) {
+		dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
+			(unsigned long) pnp_port_start(dev, 0),
+			(unsigned long) pnp_port_start(dev, 1));
+		return;
+	}
+
+	dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and "
+		"email bjorn.helgaas@hp.com\n");
+}
+
+
 /*
  *  PnP Quirks
  *  Cards or devices that need some tweaking due to incomplete resource info
@@ -126,6 +230,7 @@ static struct pnp_fixup pnp_fixups[] = {
 	{ "CTL0043", quirk_sb16audio_resources },
 	{ "CTL0044", quirk_sb16audio_resources },
 	{ "CTL0045", quirk_sb16audio_resources },
+	{ "SMCf010", quirk_smc_enable },
 	{ "" }
 };