Change in coreboot[master]: drivers/intel/mipi_camera: Add ACPI entry to provide silicon type info

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/59869 )

Change subject: drivers/intel/mipi_camera: Add ACPI entry to provide silicon type info
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drivers/intel/mipi_camera: Add ACPI entry to provide silicon type info

Add entry in ACPI table under IPU device to provide silicon type
information to IPU driver. IPU kernel driver can decide the type of
firmware to load based on this information.

BUG=b:207721978
BRANCH=none
TEST=Check for the ACPI entry in the SSDT after booting to kernel

Change-Id: I4e0af1dd50b9c014cae5454fcd4f9f76d0e0a85f
Cq-Depend: chromium:3319905
Signed-off-by: Sugnan Prabhu S 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59869
Tested-by: build bot (Jenkins) 
Reviewed-by: Sridhar Siricilla 
Reviewed-by: Tim Wawrzynczak 
---
M src/drivers/intel/mipi_camera/camera.c
M src/soc/intel/alderlake/Kconfig
2 files changed, 16 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Tim Wawrzynczak: Looks good to me, approved
  Sridhar Siricilla: Looks good to me, but someone else must approve

diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c
index a9af25c..ec7f20b 100644
--- a/src/drivers/intel/mipi_camera/camera.c
+++ b/src/drivers/intel/mipi_camera/camera.c
@@ -5,7 +5,9 @@
 #include <acpi/acpi_device.h>
 #include <acpi/acpigen.h>
 #include <acpi/acpigen_pci.h>
+#include <arch/cpu.h>
 #include <console/console.h>
+#include <cpu/intel/cpu_ids.h>
 #include <device/i2c_simple.h>
 #include <device/device.h>
 #include <device/path.h>
@@ -134,6 +136,14 @@

snprintf(name, sizeof(name), "port%u", i);
    	port_name[i] = strdup(name);
+		if (CONFIG(ACPI_ADL_IPU_ES_SUPPORT)) {
+			u32 cpu_id = cpu_get_cpuid();
+			if (cpu_id == CPUID_ALDERLAKE_A0 || cpu_id == CPUID_ALDERLAKE_A1)
+				acpi_dp_add_integer(dsd, "is_es", 1);
+			else
+				acpi_dp_add_integer(dsd, "is_es", 0);
+		}
+
    	acpi_dp_add_child(dsd, port_name[i], port_table);
    }

diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 89570b1..9e69663 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -28,6 +28,7 @@
 config CPU_SPECIFIC_OPTIONS
    def_bool y
    select ACPI_INTEL_HARDWARE_SLEEP_VALUES
+	select ACPI_ADL_IPU_ES_SUPPORT
    select ARCH_X86
    select BOOT_DEVICE_SUPPORTS_WRITES
    select CACHE_MRC_SETTINGS
@@ -339,6 +340,11 @@
    help
      Enables CrashLog.

+config ACPI_ADL_IPU_ES_SUPPORT
+	def_bool n
+	help
+	  Enables ACPI entry to provide silicon type information to IPU kernel driver.
+
 if STITCH_ME_BIN

config CSE_BPDT_VERSION