[M] Change in coreboot[master]: src/drivers/usb: Add support for Bluetooth PPAG

[Meera Ravindranath (Code Review)]

Meera Ravindranath has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69431 )

Change subject: src/drivers/usb: Add support for Bluetooth PPAG
......................................................................

src/drivers/usb: Add support for Bluetooth PPAG

Add support for BT PPAG ACPI bios configuration table as per
559910_Intel_Connectivity_Platforms_BIOS_Guidelines_Rev7_1.

BUG=b:232915103
TEST=Build,boot the platform and check if the below structure is
is visible in the SSDT dump

Name (PPAG, Package (0x02)
{
    0x00000001,
    Package (0x02)
    {
    	0x00000012,
    	0x00000000
    }
})

Signed-off-by: Meera Ravindranath 
Change-Id: Ie264edf188532fe6c260275edaa694cf3b3605d3
---
M src/drivers/usb/acpi/chip.h
M src/drivers/usb/acpi/usb_acpi.c
2 files changed, 56 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/31/69431/1

diff --git a/src/drivers/usb/acpi/chip.h b/src/drivers/usb/acpi/chip.h
index 4adffcf..3d3bd0d 100644
--- a/src/drivers/usb/acpi/chip.h
+++ b/src/drivers/usb/acpi/chip.h
@@ -60,6 +60,9 @@
    /* Delay to be inserted after device is disabled. */
    unsigned int enable_off_delay_ms;

+	/* BT PPAG */
+	bool bt_ppag_config;
+	unsigned int bt_ppag_mode;
    /*
     * Define a GPIO that shows the privacy status of the USB device.
     * E.g. On a camera: if it is one, it is recording black frames.
diff --git a/src/drivers/usb/acpi/usb_acpi.c b/src/drivers/usb/acpi/usb_acpi.c
index f72129c..dfd88e2 100644
--- a/src/drivers/usb/acpi/usb_acpi.c
+++ b/src/drivers/usb/acpi/usb_acpi.c
@@ -8,6 +8,9 @@
 #include <device/path.h>
 #include "chip.h"

+#define DOMAIN_TYPE_BT 0x12
+#define PPAG_REVISION 1
+
 static bool usb_acpi_add_gpios_to_crs(struct drivers_usb_acpi_config *cfg)
 {
    if (cfg->privacy_gpio.pin_count)
@@ -51,11 +54,34 @@
    	acpigen_write_name_string("_DDN", config->desc);
    acpigen_write_upc(config->type);

+	/*
+	 * Name ("PPAG", Package () {
+	 *   Revision,
+	 *   Package () {
+	 *     Domain Type,     // 0x12: BT Core
+	 *     PPAG Mode,       // Defines the mode of ANT_gain control to be used
+	 *   }
+	 * })
+	 */
+
+	if (config->bt_ppag_config == true) {
+		acpigen_write_name("PPAG");
+		acpigen_write_package(2);
+		acpigen_write_dword(PPAG_REVISION);
+		acpigen_write_package(2);
+		acpigen_write_dword(DOMAIN_TYPE_BT);
+		acpigen_write_dword(config->bt_ppag_mode);
+
+		acpigen_write_package_end();
+		acpigen_write_package_end();
+	}
+
    if (usb_acpi_get_pld(dev, &pld))
    	acpigen_write_pld(&pld);
    else
    	printk(BIOS_ERR, "Error retrieving PLD for %s\n", path);

+
    /* Resources */
    if (usb_acpi_add_gpios_to_crs(config) == true) {
    	struct acpi_dp *dsd;