Change in coreboot[master]: [WIP] drivers/intel/mipi_camera: Add ACPI entry to provide silicon ty...

[Sugnan Prabhu S (Code Review)]

Sugnan Prabhu S has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/59869 )

Change subject: [WIP] drivers/intel/mipi_camera: Add ACPI entry to provide silicon type info
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[WIP] 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 driver can decide the type of firmware
to load based on this information.

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

Signed-off-by: Sugnan Prabhu S 
Change-Id: I4e0af1dd50b9c014cae5454fcd4f9f76d0e0a85f
Signed-off-by: Sugnan Prabhu S 
---
M src/drivers/intel/mipi_camera/camera.c
M src/soc/intel/alderlake/Kconfig
2 files changed, 17 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/59869/1

diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c
index a9af25c..5de0094 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>
@@ -101,6 +103,7 @@
    struct acpi_dp *port_table = NULL;
    struct acpi_dp *remote = NULL;
    struct acpi_dp *lanes = NULL;
+	u32 cpu_id;

for (i = 0; i < config->cio2_num_ports && i < MAX_PORT_ENTRIES; ++i) {
    	snprintf(name, sizeof(name), "EP%u0", i);
@@ -134,6 +137,14 @@

snprintf(name, sizeof(name), "port%u", i);
    	port_name[i] = strdup(name);
+		if (CONFIG(ACPI_ADL_IPU_ES_SUPPORT)) {
+			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 2f8f3da..151fe73 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -22,6 +22,7 @@
 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
@@ -328,6 +329,11 @@
    help
      Enables CrashLog.

+config ACPI_ADL_IPU_ES_SUPPORT
+        def_bool n
+        help
+          Enables support for ES silicon ACPI entry for IPU.
+
 if STITCH_ME_BIN

config CSE_BPDT_VERSION