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SubjectFwd: [PATCH] cpufreq (5/7): add support for ICH4-M chipset in speedstep driver
----- Forwarded message from Dominik Brodowski <linux@brodo.de> -----

From: Dominik Brodowski <linux@brodo.de>
To: torvalds@transmeta.com
Cc: cpufreq@www.linux.org.uk
Subject: [PATCH] cpufreq (5/7): add support for ICH4-M chipset in speedstep driver
Date: Fri, 7 Mar 2003 11:09:16 +0100

Intel ICH4-M soutbridges use exactly the same register interface for SpeedStep
as ICH2-M and ICH3-M southbridges -- which makes adding support for this
bridge (almost) trivial.

Please apply,

Dominik

speedstep.c | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletion(-)

diff -ruN linux-original/arch/i386/kernel/cpu/cpufreq/speedstep.c linux/arch/i386/kernel/cpu/cpufreq/speedstep.c
--- linux-original/arch/i386/kernel/cpu/cpufreq/speedstep.c 2003-03-06 21:56:18.000000000 +0100
+++ linux/arch/i386/kernel/cpu/cpufreq/speedstep.c 2003-03-06 21:57:07.000000000 +0100
@@ -29,6 +29,9 @@

#include <asm/msr.h>

+#ifndef PCI_DEVICE_ID_INTEL_82801DB_12
+#define PCI_DEVICE_ID_INTEL_82801DB_12 0x24cc
+#endif

/* speedstep_chipset:
* It is necessary to know which chipset is used. As accesses to
@@ -40,7 +43,7 @@

#define SPEEDSTEP_CHIPSET_ICH2M 0x00000002
#define SPEEDSTEP_CHIPSET_ICH3M 0x00000003
-
+#define SPEEDSTEP_CHIPSET_ICH4M 0x00000004

/* speedstep_processor
*/
@@ -106,6 +109,7 @@
switch (speedstep_chipset) {
case SPEEDSTEP_CHIPSET_ICH2M:
case SPEEDSTEP_CHIPSET_ICH3M:
+ case SPEEDSTEP_CHIPSET_ICH4M:
/* get PMBASE */
pci_read_config_dword(speedstep_chipset_dev, 0x40, &pmbase);
if (!(pmbase & 0x01))
@@ -166,6 +170,7 @@
switch (speedstep_chipset) {
case SPEEDSTEP_CHIPSET_ICH2M:
case SPEEDSTEP_CHIPSET_ICH3M:
+ case SPEEDSTEP_CHIPSET_ICH4M:
/* get PMBASE */
pci_read_config_dword(speedstep_chipset_dev, 0x40, &pmbase);
if (!(pmbase & 0x01))
@@ -245,6 +250,7 @@
switch (speedstep_chipset) {
case SPEEDSTEP_CHIPSET_ICH2M:
case SPEEDSTEP_CHIPSET_ICH3M:
+ case SPEEDSTEP_CHIPSET_ICH4M:
{
u16 value = 0;

@@ -277,6 +283,14 @@
static unsigned int speedstep_detect_chipset (void)
{
speedstep_chipset_dev = pci_find_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82801DB_12,
+ PCI_ANY_ID,
+ PCI_ANY_ID,
+ NULL);
+ if (speedstep_chipset_dev)
+ return SPEEDSTEP_CHIPSET_ICH4M;
+
+ speedstep_chipset_dev = pci_find_subsys(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82801CA_12,
PCI_ANY_ID,
PCI_ANY_ID,
_______________________________________________
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Cpufreq@www.linux.org.uk
http://www.linux.org.uk/mailman/listinfo/cpufreq
----- End forwarded message -----
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html

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