Add fan control support to ITE IT8716F.

Signed-off-by: Ward Vandewege <ward@gnu.org>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2620 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/src/superio/ite/it8716f/superio.c b/src/superio/ite/it8716f/superio.c
index f8cdd42bef1b2ffb75e2dd736352edb158b62bb9..33b6c4180d4f3eca83edd1776a957349bb93fb5f 100644 (file)
--- a/src/superio/ite/it8716f/superio.c
+++ b/src/superio/ite/it8716f/superio.c
@@ -23,6 +23,7 @@
 
 #include <device/device.h>
 #include <device/pnp.h>
+#include <console/console.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include "chip.h"
@@ -49,6 +50,31 @@ static void pnp_exit_ext_func_mode(device_t dev)
        pnp_write_config(dev, 0x02, 0x02);
 }
 
+static void pnp_write_index(unsigned long port_base, uint8_t reg, uint8_t value)
+{
+       outb(reg, port_base);
+       outb(value, port_base + 1);
+}
+
+static uint8_t pnp_read_index(unsigned long port_base, uint8_t reg)
+{
+       outb(reg, port_base);
+       return inb(port_base + 1);
+}
+
+static void init_ec(unsigned long base)
+{
+       uint8_t value;
+
+       // Read out current value of FAN_CTL Control register (0x14)
+       value = pnp_read_index(base, 0x14);
+       printk_debug("FAN_CTL: reg = 0x%04x, read value = 0x%02x\r\n",base + 0x14, value);
+       
+       // Set FAN_CTL Control register (0x14) polarity to High, and activate fans 1, 2 and 3
+       pnp_write_index(base, 0x14, value | 0x87);
+       printk_debug("FAN_CTL: reg = 0x%04x, writing value = 0x%02x\r\n",base + 0x14, value | 0x87);
+}
+
 static void it8716f_init(device_t dev)
 {
        struct superio_ite_it8716f_config *conf;
@@ -60,7 +86,7 @@ static void it8716f_init(device_t dev)
 
        conf = dev->chip_info;
 
-       /* TODO: FDC, PP, EC, KBCM, MIDI, GAME, IR. */
+       /* TODO: FDC, PP, KBCM, MIDI, GAME, IR. */
        switch (dev->path.u.pnp.device) {
        case IT8716F_SP1:
                res0 = find_resource(dev, PNP_IDX_IO0);
@@ -70,6 +96,11 @@ static void it8716f_init(device_t dev)
                res0 = find_resource(dev, PNP_IDX_IO0);
                init_uart8250(res0->base, &conf->com2);
                break;
+       case IT8716F_EC:
+               res0 = find_resource(dev, PNP_IDX_IO0);
+#define EC_INDEX_PORT 5
+               init_ec(res0->base + EC_INDEX_PORT);
+               break;
        case IT8716F_KBCK:
                res0 = find_resource(dev, PNP_IDX_IO0);
                res1 = find_resource(dev, PNP_IDX_IO1);
@@ -113,7 +144,7 @@ static struct pnp_info pnp_dev_info[] = {
        { &ops, IT8716F_SP1, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
        { &ops, IT8716F_SP2, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
        { &ops, IT8716F_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
-       { &ops, IT8716F_EC, },
+       { &ops, IT8716F_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, { 0x7f8, 0 }, { 0x7f8, 0x4}, },
        { &ops, IT8716F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
        { &ops, IT8716F_KBCM, PNP_IRQ0, },
        // No 7 { 0,},