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implement hwmon fan divisor setting for w83697hf 

Change-Id: I887ac1142875ca1dc1a1eb8eebec402fbe7512c3
Signed-off-by: Florian Zumbiehl <florz@florz.de>
Reviewed-on: http://review.coreboot.org/384
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>
Tested-by: build bot (Jenkins)
This commit is contained in:
Florian Zumbiehl 2011-11-01 20:19:06 +01:00 committed by Rudolf Marek
parent 04a8d6239f
commit 85392a8c98
2 changed files with 36 additions and 1 deletions
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3
src/superio/winbond/w83697hf/chip.h
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@ -26,7 +26,8 @@
extern struct chip_operations superio_winbond_w83697hf_ops; extern struct chip_operations superio_winbond_w83697hf_ops;
struct superio_winbond_w83697hf_config { struct superio_winbond_w83697hf_config {
unsigned int hwmon_fan1_divisor;
unsigned int hwmon_fan2_divisor;
}; };
#endif #endif

34
src/superio/winbond/w83697hf/superio.c
View File

@ -41,10 +41,44 @@ static void pnp_exit_ext_func_mode(device_t dev)
outb(0xaa, dev->path.pnp.port); 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) static void w83697hf_init(device_t dev)
{ {
struct resource *res0;
struct superio_winbond_w83697hf_config *cfg;
if (!dev->enabled) if (!dev->enabled)
return; 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) static void w83697hf_pnp_set_resources(device_t dev)