google/sentry: Add as a variant of glados

Add google/sentry (Lenovo Thinkpad 13 Chromebook) as a variant of
glados Skylake reference board:
- add sentry-specific DPTF, EC config, GPIO config, Kconfig,
    NHLT config, PEI data, VBT, SPD data, and devicetree
- add sentry-specific GPIO determination of which audio codec
    is present

Adapted from Chromium branch firmware-glados-7820.B, commit
b0c3efe54d877246d07f2467b2dff51cc30348fa [soc/intel/skylake: Enable VMX]

Test: build/boot google/sentry, verify correct functionality

Change-Id: I783422aedac8b7fc52098eebd05b2061a1011b60
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27418
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 22 insertions, 2 deletions

diff --git a/src/mainboard/google/glados/mainboard.c b/src/mainboard/google/glados/mainboard.c
index 451b3d4336..476bcf7001 100644
--- a/src/mainboard/google/glados/mainboard.c
+++ b/src/mainboard/google/glados/mainboard.c
@@ -19,8 +19,10 @@
 #include <baseboard/variant.h>
 #include <console/console.h>
 #include <device/device.h>
+#include <gpio.h>
 #include <stdlib.h>
 #include <soc/nhlt.h>
+#include <variant/gpio.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 #include "ec.h"
 
@@ -32,6 +34,24 @@ static void mainboard_init(struct device *dev)
 	mainboard_ec_init();
 }
 
+static uint8_t adi_codec_enable(void)
+{
+#ifdef AUDIO_DB_ID
+	return gpio_get(AUDIO_DB_ID);
+#else
+	return 1;
+#endif
+}
+
+static uint8_t max_codec_enable(void)
+{
+#ifdef AUDIO_DB_ID
+	return gpio_get(AUDIO_DB_ID) ? 0 : 1;
+#else
+	return 1;
+#endif
+}
+
 static unsigned long mainboard_write_acpi_tables(
 	struct device *device, unsigned long current, acpi_rsdp_t *rsdp)
 {
@@ -58,12 +78,12 @@ static unsigned long mainboard_write_acpi_tables(
 			printk(BIOS_ERR, "Couldn't add 4CH DMIC arrays.\n");
 
 	/* ADI Smart Amps for left and right. */
-	if (IS_ENABLED(CONFIG_NHLT_SSM4567))
+	if (IS_ENABLED(CONFIG_NHLT_SSM4567) && adi_codec_enable())
 		if (nhlt_soc_add_ssm4567(nhlt, AUDIO_LINK_SSP0))
 			printk(BIOS_ERR, "Couldn't add ssm4567.\n");
 
 	/* MAXIM Smart Amps for left and right. */
-	if (IS_ENABLED(CONFIG_NHLT_MAX98357)) {
+	if (IS_ENABLED(CONFIG_NHLT_MAX98357) && max_codec_enable()) {
 		if (nhlt_soc_add_max98357(nhlt, AUDIO_LINK_SSP0))
 			printk(BIOS_ERR, "Couldn't add max98357.\n");