superio/ite: Add support for IT8625E

Found on tiny firewall appliance from Chinese company named "Topton"
with Intel N100 SoC. This system is fanless so all we need is the
ability to use serial output (RS232 in RJ45 form-factor, called
"Cisco-style" at address 0x3f8), which is working.

Change-Id: I9c27f52785d294a6f7c315b8df47d4dd5b389414
Signed-off-by: Alicja Michalska <ahplka19@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84176
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alexander Goncharov <chat@joursoir.net>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/superio/ite/it8625e/superio.c b/src/superio/ite/it8625e/superio.c
new file mode 100644
index 0000000000..395cb3f96f
--- /dev/null
+++ b/src/superio/ite/it8625e/superio.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <device/device.h>
+#include <device/pnp.h>
+#include <pc80/keyboard.h>
+#include <superio/conf_mode.h>
+#include <superio/ite/common/env_ctrl.h>
+
+#include "chip.h"
+#include "it8625e.h"
+
+static void it8625e_init(struct device *dev)
+{
+	const struct superio_ite_it8625e_config *conf = dev->chip_info;
+	const struct resource *res;
+
+	if (!dev->enabled)
+		return;
+
+	switch (dev->path.pnp.device) {
+	case IT8625E_EC:
+		res = probe_resource(dev, PNP_IDX_IO0);
+		if (!conf || !res)
+			break;
+		ite_ec_init(res->base, &conf->ec);
+		break;
+	case IT8625E_KBCK:
+		pc_keyboard_init(NO_AUX_DEVICE);
+		break;
+	case IT8625E_KBCM:
+		break;
+	}
+}
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = pnp_set_resources,
+	.enable_resources = pnp_enable_resources,
+	.enable           = pnp_alt_enable,
+	.init             = it8625e_init,
+	.ops_pnp_mode     = &pnp_conf_mode_870155_aa,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+	/* Serial Port 1 - 0x3f8 */
+	{ NULL, IT8625E_SP1, PNP_IO0 | PNP_IRQ0, 0x0ff8, },
+	/* Serial Port 2 - 0x2f8 */
+	{ NULL, IT8625E_SP2, PNP_IO0 | PNP_IRQ0, 0x0ff8, },
+	/* Parallel Port */
+	{ NULL, IT8625E_PP, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_DRQ0,
+		0x0ff8, 0x0ff8, },
+	/* Environment Controller */
+	{ NULL, IT8625E_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x0ff0, 0x0ff0, },
+	/* PS/2 Keyboard */
+	{ NULL, IT8625E_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x0fff, 0x0fff, },
+	/* PS/2 Mouse */
+	{ NULL, IT8625E_KBCM, PNP_IRQ0, },
+	/* GPIO */
+	{ NULL, IT8625E_GPIO, PNP_IO0 | PNP_IO1 | PNP_IO2 | PNP_IRQ0,
+		0x0fff, 0x0fe0, 0x0fff, },
+	/* Consumer IR */
+	{ NULL, IT8625E_CIR, PNP_IO0 | PNP_IRQ0 | PNP_MSC0, 0x0ff8, },
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
+}
+
+struct chip_operations superio_ite_it8625e_ops = {
+	.name = "ITE IT8625E Super I/O",
+	.enable_dev = enable_dev,
+};