mb/google/zork: Add Bluetooth reset gpios to devicetree

Add bluetooth reset gpio 143 to dalboz baseboard devicetree
Add bluetooth reset gpio 14 to trembyle baseboard devicetree
Remove bluetooth reset_gpio when not supported on a specific board
variant.

BUG=b:157580724
TEST=Boot Ezkinil with Realtek 8822CE, observe log
[   12.240720] Bluetooth: af_bluetooth.c:bt_init() HCI device and connection manager initialized
[   12.249272] Bluetooth: hci_sock.c:hci_sock_init() HCI socket layer initialized
[   12.256520] Bluetooth: l2cap_sock.c:l2cap_init_sockets() L2CAP socket layer initialized
[   12.264575] Bluetooth: sco.c:sco_init() SCO socket layer initialized
[   12.273700] usb 3-2: GPIO lookup for consumer reset
[   12.273702] usb 3-2: using ACPI for GPIO lookup
[   12.273705] acpi device:18: GPIO: looking up reset-gpios
[   12.273707] acpi device:18: GPIO: looking up reset-gpio
[   12.273711] acpi device:18: GPIO: _DSD returned device:18 0 0 0
[   12.273737] gpio gpiochip0: Persistence not supported for GPIO 14
[   12.273960] usbcore: registered new interface driver btusb

Change-Id: I14e3ef099d5b8f48c915b41284039b3508dec975
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42832
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/zork/mainboard.c

@@ -135,6 +135,7 @@ static void mainboard_configure_gpios(void)
 static void mainboard_devtree_update(void)
 {
 	variant_audio_update();
+	variant_bluetooth_update();
 	variant_devtree_update();
 }
 

src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb

@@ -235,6 +235,7 @@ chip soc/amd/picasso
 						chip drivers/usb/acpi
 							register "desc" = ""Bluetooth""
 							register "type" = "UPC_TYPE_INTERNAL"
+							register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_143)"
 							device usb 2.5 on end
 						end
 						chip drivers/usb/acpi

src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb

@@ -263,6 +263,7 @@ chip soc/amd/picasso
 						chip drivers/usb/acpi
 							register "desc" = ""Bluetooth""
 							register "type" = "UPC_TYPE_INTERNAL"
+							register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_14)"
 							device usb 2.5 on end
 						end
 					end
@@ -282,6 +283,7 @@ chip soc/amd/picasso
 						chip drivers/usb/acpi
 							register "desc" = ""Bluetooth""
 							register "type" = "UPC_TYPE_INTERNAL"
+							register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_14)"
 							device usb 2.1 on end
 						end
 						chip drivers/usb/acpi

src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h

@@ -35,6 +35,8 @@ const struct soc_amd_gpio *variant_sleep_gpio_table(size_t *size, int slp_typ);
 void variant_devtree_update(void);
 /* Update audio configuration in devicetree during ramstage. */
 void variant_audio_update(void);
+/* Update bluetooth configuration in devicetree during ramstage. */
+void variant_bluetooth_update(void);
 /* Configure PCIe GPIOs as per variant sequencing requirements. */
 void variant_pcie_gpio_configure(void);
 

src/mainboard/google/zork/variants/baseboard/ramstage_common.c

@@ -2,7 +2,10 @@
 
 #include <acpi/acpi_device.h>
 #include <baseboard/variants.h>
+#include <console/console.h>
+#include <device/device.h>
 #include <drivers/amd/i2s_machine_dev/chip.h>
+#include <drivers/usb/acpi/chip.h>
 #include <ec/google/chromeec/ec.h>
 #include <soc/gpio.h>
 #include <soc/pci_devs.h>
@@ -47,3 +50,88 @@ void variant_audio_update(void)
 		break;
 	}
 }
+
+static const struct device_path xhci0_bt_path[] = {
+	{
+		.type = DEVICE_PATH_PCI,
+		.pci.devfn = PCIE_GPP_A_DEVFN
+	},
+	{
+		.type = DEVICE_PATH_PCI,
+		.pci.devfn = XHCI0_DEVFN
+	},
+	{
+		.type = DEVICE_PATH_USB,
+		.usb.port_type = 0,
+		.usb.port_id = 0
+	},
+	{
+		.type = DEVICE_PATH_USB,
+		.usb.port_type = 2,
+		.usb.port_id = 5
+	}
+};
+
+static const struct device_path xhci1_bt_path[] = {
+	{
+		.type = DEVICE_PATH_PCI,
+		.pci.devfn = PCIE_GPP_A_DEVFN
+	},
+	{
+		.type = DEVICE_PATH_PCI,
+		.pci.devfn = XHCI1_DEVFN
+	},
+	{
+		.type = DEVICE_PATH_USB,
+		.usb.port_type = 0,
+		.usb.port_id = 0
+	},
+	{
+		.type = DEVICE_PATH_USB,
+		.usb.port_type = 2,
+		.usb.port_id = 1
+	}
+};
+
+/*
+ * Removes reset_gpio from bluetooth device in device tree.
+ *
+ * The bluetooth device may be on XHCI0 or XHCI1 depending on SOC.
+ * There's no harm in removing from both here.
+ */
+static void baseboard_remove_bluetooth_reset_gpio(void)
+{
+	const struct device *xhci0_bt_dev, *xhci1_bt_dev;
+	struct drivers_usb_acpi_config *xhci0_bt_cfg, *xhci1_bt_cfg;
+
+	xhci0_bt_dev = find_dev_nested_path(
+		pci_root_bus(), xhci0_bt_path, ARRAY_SIZE(xhci0_bt_path));
+	if (!xhci0_bt_dev) {
+		printk(BIOS_ERR, "%s: Failed to find bluetooth device on XHCI0!", __func__);
+		return;
+	}
+	/* config_of dies on failure, so a NULL check is not required */
+	xhci0_bt_cfg = config_of(xhci0_bt_dev);
+	xhci0_bt_cfg->reset_gpio.pin_count = 0;
+
+	/* There's no bluetooth device on XHCI1 on Dalboz */
+	if (CONFIG(BOARD_GOOGLE_BASEBOARD_DALBOZ))
+		return;
+
+	xhci1_bt_dev = find_dev_nested_path(
+		pci_root_bus(), xhci1_bt_path, ARRAY_SIZE(xhci1_bt_path));
+	if (!xhci1_bt_dev) {
+		printk(BIOS_ERR, "%s: Failed to find bluetooth device on XHCI1!", __func__);
+		return;
+	}
+	xhci1_bt_cfg = config_of(xhci1_bt_dev);
+	xhci1_bt_cfg->reset_gpio.pin_count = 0;
+}
+
+void variant_bluetooth_update(void)
+{
+	if (CONFIG(BOARD_GOOGLE_BASEBOARD_DALBOZ) || variant_uses_v3_schematics())
+		return;
+
+	baseboard_remove_bluetooth_reset_gpio();
+}