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)
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@ -26,7 +26,8 @@
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extern struct chip_operations superio_winbond_w83697hf_ops;
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struct superio_winbond_w83697hf_config {
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unsigned int hwmon_fan1_divisor;
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unsigned int hwmon_fan2_divisor;
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};
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#endif
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@ -41,10 +41,44 @@ static void pnp_exit_ext_func_mode(device_t dev)
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outb(0xaa, dev->path.pnp.port);
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}
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static void hwmon_set_fan_divisor(unsigned int base, int num, unsigned int divisor) {
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unsigned char enc, buf;
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if (divisor) {
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enc = log2(divisor);
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if (1 << enc != divisor || enc > 7)
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die("invalid fan divisor");
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outb(0x4e, base + 5);
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outb(0x00, base + 6);
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outb(0x47, base + 5);
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outb((inb(base + 6) & ~(0x30 << (num * 2))) | ((enc & 3) << (4 + num * 2)), base + 6);
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outb(0x5d, base + 5);
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buf = inb(base + 6);
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/* the above inb() auto-increments the address pointer ... */
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outb(0x5d, base + 5);
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outb((buf & ~(0x20 << num)) | ((enc & 4) << (3 + num)), base + 6);
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}
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}
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static void w83697hf_init(device_t dev)
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{
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struct resource *res0;
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struct superio_winbond_w83697hf_config *cfg;
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if (!dev->enabled)
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return;
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cfg = dev->chip_info;
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switch (dev->path.pnp.device) {
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case W83697HF_HWM:
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if (cfg) {
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res0 = find_resource(dev, PNP_IDX_IO0);
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hwmon_set_fan_divisor(res0->base, 0, cfg->hwmon_fan1_divisor);
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hwmon_set_fan_divisor(res0->base, 1, cfg->hwmon_fan2_divisor);
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}
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break;
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}
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}
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static void w83697hf_pnp_set_resources(device_t dev)
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