diff options
Diffstat (limited to 'drivers/hwmon/coretemp.c')
| -rw-r--r-- | drivers/hwmon/coretemp.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 942509892895..d84dae73203e 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -36,6 +36,7 @@ #include <linux/cpu.h> #include <linux/smp.h> #include <linux/moduleparam.h> +#include <linux/pci.h> #include <asm/msr.h> #include <asm/processor.h> #include <asm/cpu_device_id.h> @@ -190,6 +191,17 @@ static ssize_t show_temp(struct device *dev, return tdata->valid ? sprintf(buf, "%d\n", tdata->temp) : -EAGAIN; } +struct tjmax_pci { + unsigned int device; + int tjmax; +}; + +static const struct tjmax_pci tjmax_pci_table[] = { + { 0x0c72, 102000 }, /* Atom S1240 (Centerton) */ + { 0x0c73, 95000 }, /* Atom S1220 (Centerton) */ + { 0x0c75, 95000 }, /* Atom S1260 (Centerton) */ +}; + struct tjmax { char const *id; int tjmax; @@ -222,8 +234,11 @@ static const struct tjmax_model tjmax_model_table[] = { * is undetectable by software */ { 0x27, ANY, 90000 }, /* Atom Medfield (Z2460) */ - { 0x35, ANY, 90000 }, /* Atom Clover Trail/Cloverview (Z2760) */ - { 0x36, ANY, 100000 }, /* Atom Cedar Trail/Cedarview (N2xxx, D2xxx) */ + { 0x35, ANY, 90000 }, /* Atom Clover Trail/Cloverview (Z27x0) */ + { 0x36, ANY, 100000 }, /* Atom Cedar Trail/Cedarview (N2xxx, D2xxx) + * Also matches S12x0 (stepping 9), covered by + * PCI table + */ }; static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) @@ -236,8 +251,20 @@ static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) int err; u32 eax, edx; int i; + struct pci_dev *host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); + + /* + * Explicit tjmax table entries override heuristics. + * First try PCI host bridge IDs, followed by model ID strings + * and model/stepping information. + */ + if (host_bridge && host_bridge->vendor == PCI_VENDOR_ID_INTEL) { + for (i = 0; i < ARRAY_SIZE(tjmax_pci_table); i++) { + if (host_bridge->device == tjmax_pci_table[i].device) + return tjmax_pci_table[i].tjmax; + } + } - /* explicit tjmax table entries override heuristics */ for (i = 0; i < ARRAY_SIZE(tjmax_table); i++) { if (strstr(c->x86_model_id, tjmax_table[i].id)) return tjmax_table[i].tjmax; |