drivers/intel/pmc_mux: Rename con driver to conn

For historical reasons, Windows has issues with certain names being
used for files and directories, 'con' or 'CON' being one of
them. Therefore, rename the pmc_mux/con driver to pmc_mux/conn in
order to work around this issue.

TEST=built volteer (only user of this driver as of now)

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Ia78dc4efe647c96a7169a3b95fc3b8944d052c83
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43090
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Caveh Jalali <caveh@chromium.org>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/drivers/intel/pmc_mux/conn/conn.c b/src/drivers/intel/pmc_mux/conn/conn.c
new file mode 100644
index 0000000000..16d113bcb1
--- /dev/null
+++ b/src/drivers/intel/pmc_mux/conn/conn.c
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpigen.h>
+#include <console/console.h>
+#include <intelblocks/acpi.h>
+#include "chip.h"
+
+static const char *conn_acpi_name(const struct device *dev)
+{
+	static char name[5];
+	snprintf(name, sizeof(name), "CON%1X", dev->path.generic.id);
+	return name;
+}
+
+static const char *orientation_to_str(enum typec_orientation ori)
+{
+	switch (ori) {
+	case TYPEC_ORIENTATION_NORMAL:
+		return "normal";
+	case TYPEC_ORIENTATION_REVERSE:
+		return "reverse";
+	case TYPEC_ORIENTATION_FOLLOW_CC: /* Intentional fallthrough */
+	default:
+		return "";
+	}
+}
+
+static void conn_fill_ssdt(const struct device *dev)
+{
+	struct drivers_intel_pmc_mux_conn_config *config = dev->chip_info;
+	struct acpi_dp *dsd;
+	const char *scope;
+	const char *name;
+
+	if (!dev->enabled)
+		return;
+
+	/* Reference the existing scope and write CONx device */
+	scope = acpi_device_scope(dev);
+	name = acpi_device_name(dev);
+	if (!scope || !name)
+		return;
+
+	acpigen_write_scope(scope);
+	acpigen_write_device(name);
+
+	acpigen_write_name_integer("_ADR", dev->path.generic.id);
+
+	/* _DSD, Device-Specific Data */
+	dsd = acpi_dp_new_table("_DSD");
+	acpi_dp_add_integer(dsd, "usb2-port-number", config->usb2_port_number);
+	acpi_dp_add_integer(dsd, "usb3-port-number", config->usb3_port_number);
+
+	/*
+	 * The kernel assumes that these Type-C signals (SBUs and HSLs) follow the CC lines,
+	 * unless they are explicitly called out otherwise.
+	 */
+	if (config->sbu_orientation != TYPEC_ORIENTATION_FOLLOW_CC)
+		acpi_dp_add_string(dsd, "sbu-orientation",
+				   orientation_to_str(config->sbu_orientation));
+
+	if (config->hsl_orientation != TYPEC_ORIENTATION_FOLLOW_CC)
+		acpi_dp_add_string(dsd, "hsl-orientation",
+				   orientation_to_str(config->hsl_orientation));
+
+	acpi_dp_write(dsd);
+
+	acpigen_pop_len(); /* CONx Device */
+	acpigen_pop_len(); /* Scope */
+
+	printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), dev->chip_ops->name,
+	       dev_path(dev));
+}
+
+static struct device_operations conn_dev_ops = {
+	.read_resources	= noop_read_resources,
+	.set_resources	= noop_set_resources,
+	.acpi_name	= conn_acpi_name,
+	.acpi_fill_ssdt	= conn_fill_ssdt,
+};
+
+static void conn_enable(struct device *dev)
+{
+	dev->ops = &conn_dev_ops;
+}
+
+struct chip_operations drivers_intel_pmc_mux_conn_ops = {
+	CHIP_NAME("Intel PMC MUX CONN Driver")
+	.enable_dev	= conn_enable,
+};