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-rw-r--r--src/superio/winbond/w83697hf/chip.h3
-rw-r--r--src/superio/winbond/w83697hf/superio.c34
2 files changed, 36 insertions, 1 deletions
diff --git a/src/superio/winbond/w83697hf/chip.h b/src/superio/winbond/w83697hf/chip.h
index 1a1cbcc038..2359b6679f 100644
--- a/src/superio/winbond/w83697hf/chip.h
+++ b/src/superio/winbond/w83697hf/chip.h
@@ -26,7 +26,8 @@
extern struct chip_operations superio_winbond_w83697hf_ops;
struct superio_winbond_w83697hf_config {
-
+ unsigned int hwmon_fan1_divisor;
+ unsigned int hwmon_fan2_divisor;
};
#endif
diff --git a/src/superio/winbond/w83697hf/superio.c b/src/superio/winbond/w83697hf/superio.c
index d2cbcbd642..8f090d0b66 100644
--- a/src/superio/winbond/w83697hf/superio.c
+++ b/src/superio/winbond/w83697hf/superio.c
@@ -41,10 +41,44 @@ static void pnp_exit_ext_func_mode(device_t dev)
outb(0xaa, dev->path.pnp.port);
}
+static void hwmon_set_fan_divisor(unsigned int base, int num, unsigned int divisor) {
+ unsigned char enc, buf;
+
+ if (divisor) {
+ enc = log2(divisor);
+ if (1 << enc != divisor || enc > 7)
+ die("invalid fan divisor");
+ outb(0x4e, base + 5);
+ outb(0x00, base + 6);
+ outb(0x47, base + 5);
+ outb((inb(base + 6) & ~(0x30 << (num * 2))) | ((enc & 3) << (4 + num * 2)), base + 6);
+ outb(0x5d, base + 5);
+ buf = inb(base + 6);
+ /* the above inb() auto-increments the address pointer ... */
+ outb(0x5d, base + 5);
+ outb((buf & ~(0x20 << num)) | ((enc & 4) << (3 + num)), base + 6);
+ }
+}
+
static void w83697hf_init(device_t dev)
{
+ struct resource *res0;
+ struct superio_winbond_w83697hf_config *cfg;
+
if (!dev->enabled)
return;
+
+ cfg = dev->chip_info;
+
+ switch (dev->path.pnp.device) {
+ case W83697HF_HWM:
+ if (cfg) {
+ res0 = find_resource(dev, PNP_IDX_IO0);
+ hwmon_set_fan_divisor(res0->base, 0, cfg->hwmon_fan1_divisor);
+ hwmon_set_fan_divisor(res0->base, 1, cfg->hwmon_fan2_divisor);
+ }
+ break;
+ }
}
static void w83697hf_pnp_set_resources(device_t dev)