SIO: Add smsc/sch4037 superio support

[coreboot.git] / src / superio / smsc / sch4037 / superio.c

diff --git a/src/superio/smsc/sch4037/superio.c b/src/superio/smsc/sch4037/superio.c
new file mode 100644 (file)
index 0000000..eebcacd
--- /dev/null
+++ b/src/superio/smsc/sch4037/superio.c
@@ -0,0 +1,123 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* RAM driver for the SMSC KBC1100 Super I/O chip */
+
+#include <arch/io.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <console/console.h>
+#include <device/smbus.h>
+#include <string.h>
+#include <bitops.h>
+#include <uart8250.h>
+#include <pc80/keyboard.h>
+#include <stdlib.h>
+#include "chip.h"
+#include "sch4037.h"
+
+/* Forward declarations */
+static void enable_dev(device_t dev);
+static void sch4037_pnp_set_resources(device_t dev);
+static void sch4037_pnp_enable_resources(device_t dev);
+static void sch4037_pnp_enable(device_t dev);
+static void sch4037_init(device_t dev);
+
+static void pnp_enter_conf_state(device_t dev);
+static void pnp_exit_conf_state(device_t dev);
+
+struct chip_operations superio_smsc_sch4037_ops = {
+       CHIP_NAME("SMSC SCH4037 Super I/O")
+               .enable_dev = enable_dev,
+};
+
+static struct device_operations ops = {
+       .read_resources   = pnp_read_resources,
+       .set_resources    = sch4037_pnp_set_resources,
+       .enable_resources = sch4037_pnp_enable_resources,
+       .enable           = sch4037_pnp_enable,
+       .init             = sch4037_init,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+       { &ops, SCH4037_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
+};
+
+static void enable_dev(device_t dev)
+{
+       printk(BIOS_SPEW, "file '%s',line %d, %s()\n", __FILE__, __LINE__, __func__);
+       pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
+}
+
+static void sch4037_pnp_set_resources(device_t dev)
+{
+       pnp_enter_conf_state(dev);
+       pnp_set_resources(dev);
+       pnp_exit_conf_state(dev);
+}
+
+static void sch4037_pnp_enable_resources(device_t dev)
+{
+       pnp_enter_conf_state(dev);
+       pnp_enable_resources(dev);
+       pnp_exit_conf_state(dev);
+}
+
+static void sch4037_pnp_enable(device_t dev)
+{
+       pnp_enter_conf_state(dev);
+       pnp_set_logical_device(dev);
+
+       if(dev->enabled) {
+               pnp_set_enable(dev, 1);
+       }
+       else {
+               pnp_set_enable(dev, 0);
+       }
+       pnp_exit_conf_state(dev);
+}
+
+static void sch4037_init(device_t dev)
+{
+       struct superio_smsc_sch4037_config *conf = dev->chip_info;
+       struct resource *res0, *res1;
+
+       if (!dev->enabled) {
+               return;
+       }
+
+       switch(dev->path.pnp.device) {
+
+               case SCH4037_KBC:
+                       res0 = find_resource(dev, PNP_IDX_IO0);
+                       res1 = find_resource(dev, PNP_IDX_IO1);
+                       pc_keyboard_init(&conf->keyboard);
+                       break;
+       }
+}
+
+static void pnp_enter_conf_state(device_t dev)
+{
+       outb(0x55, dev->path.pnp.port);
+}
+
+static void pnp_exit_conf_state(device_t dev)
+{
+       outb(0xaa, dev->path.pnp.port);
+}