Make the code easier to extend and easier to adjust by using a model table
listing CPU models, stepping/mask, and associated TjMax.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/coretemp.c | 36 ++++++++++++++++++++++--------------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 1937cd4..7107096 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -208,6 +208,23 @@ static const struct tjmax __cpuinitconst tjmax_table[] = {
{ "CPU 330", 125000 },
};
+struct tjmax_model {
+ u8 model;
+ u8 mask;
+ int tjmax;
+};
+
+static const struct tjmax_model __cpuinitconst tjmax_model_table[] = {
+ { 0x1c, 10, 100000 }, /* D4xx, N4xx, D5xx, N5xx */
+ { 0x1c, 0, 90000 }, /* Z5xx, N2xx, 230, 330, others */
+ { 0x26, 0, 90000 }, /* Atom Tunnel Creek (Exx), Lincroft (Z6xx)
+ * Note: TjMax for E6xxT is 110C, but CPU type
+ * is undetectable by software
+ */
+ { 0x27, 0, 90000 }, /* Atom Medfield (Z2460) */
+ { 0x36, 0, 100000 }, /* Atom Cedar Trail/Cedarview (N2xxx, D2xxx) */
+};
+
static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id,
struct device *dev)
{
@@ -226,20 +243,11 @@ static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id,
return tjmax_table[i].tjmax;
}
- /* Atom CPUs */
-
- if (c->x86_model == 0x1c) {
- /*
- * TjMax for stepping 10 CPUs (N4xx, N5xx, D4xx, D5xx)
- * is 100 degrees C, for all others it is 90 degrees C.
- */
- if (c->x86_mask == 10)
- return 100000;
- return 90000;
- } else if (c->x86_model == 0x26 || c->x86_model == 0x27) {
- return 90000;
- } else if (c->x86_model == 0x36) {
- return 100000;
+ for (i = 0; i < ARRAY_SIZE(tjmax_model_table); i++) {
+ const struct tjmax_model *tm = &tjmax_model_table[i];
+ if (c->x86_model == tm->model &&
+ (!tm->mask || c->x86_mask == tm->mask))
+ return tm->tjmax;
}
/* Early chips have no MSR for TjMax */
--
1.7.9.7
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