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| author | Guenter Roeck <linux@roeck-us.net> | 2012-06-17 18:05:05 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-06-17 18:05:05 +0200 |
| commit | 41e58a1f2b90c88d94b4bd84beb9927a4c2704e9 (patch) | |
| tree | ffcdba071407da9b5f7029534829b4f3d8744ad9 /drivers/hwmon/coretemp.c | |
| parent | hwmon: (coretemp) Add support for Atom D2000 and N2000 series CPU models (diff) | |
| download | linux-41e58a1f2b90c88d94b4bd84beb9927a4c2704e9.tar.xz linux-41e58a1f2b90c88d94b4bd84beb9927a4c2704e9.zip | |
hwmon: (coretemp) Improve support for TjMax detection on Atom CPUs
Atom CPUs don't have a register to retrieve TjMax. Detection so far was
incomplete. Use the X86 model ID to improve it.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/coretemp.c')
| -rw-r--r-- | drivers/hwmon/coretemp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 42c2f431ea51..22716833739a 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -191,6 +191,24 @@ static ssize_t show_temp(struct device *dev, return tdata->valid ? sprintf(buf, "%d\n", tdata->temp) : -EAGAIN; } +struct tjmax { + char const *id; + int tjmax; +}; + +static struct tjmax __cpuinitconst tjmax_table[] = { + { "CPU D410", 100000 }, + { "CPU D425", 100000 }, + { "CPU D510", 100000 }, + { "CPU D525", 100000 }, + { "CPU N450", 100000 }, + { "CPU N455", 100000 }, + { "CPU N470", 100000 }, + { "CPU N475", 100000 }, + { "CPU 230", 100000 }, + { "CPU 330", 125000 }, +}; + static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) { @@ -202,6 +220,13 @@ static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id, int err; u32 eax, edx; struct pci_dev *host_bridge; + int i; + + /* 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; + } /* Early chips have no MSR for TjMax */ |