Change in coreboot[master]: drivers/intel/dptf: Add support for Power participant

[Varshit B Pandya (Code Review)]

Varshit B Pandya has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62944 )

Change subject: drivers/intel/dptf: Add support for Power participant
......................................................................

drivers/intel/dptf: Add support for Power participant

As per Intel Dynamic Tuning revision 1.3.13 add support for
TPWR device under _SB.DPTF

BUG=b:205928013
TEST=Build, boot brya0 and dump SSDT to check TPWR device

Signed-off-by: Varshit B Pandya 
Change-Id: I437e509f58df1777d75e5981f0a5a63095ccb6a3
---
M src/acpi/acpigen_dptf.c
M src/drivers/intel/dptf/Kconfig
M src/drivers/intel/dptf/dptf.c
M src/drivers/intel/dptf/dptf.h
M src/include/acpi/acpigen_dptf.h
5 files changed, 33 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/62944/1

diff --git a/src/acpi/acpigen_dptf.c b/src/acpi/acpigen_dptf.c
index f2ae769..3c7c0e5 100644
--- a/src/acpi/acpigen_dptf.c
+++ b/src/acpi/acpigen_dptf.c
@@ -74,6 +74,8 @@
    	return "TSR4";
    case DPTF_TPCH:
    	return "TPCH";
+	case DPTF_TPWR:
+		return "TPWR";
    default:
    	return "";
    }
diff --git a/src/drivers/intel/dptf/Kconfig b/src/drivers/intel/dptf/Kconfig
index 6f590b9..6fbcb722 100644
--- a/src/drivers/intel/dptf/Kconfig
+++ b/src/drivers/intel/dptf/Kconfig
@@ -12,3 +12,10 @@
    help
      When enabled, chip driver/intel/dptf will publish information to the
      SSDT for the TPCH device.
+
+config DRIVERS_INTEL_DPTF_SUPPORTS_TPWR
+	def_bool n
+	depends on HAVE_ACPI_TABLES
+	help
+	  When enabled, chip driver/intel/dptf will publish information to the
+	  SSDT for TPWR device.
diff --git a/src/drivers/intel/dptf/dptf.c b/src/drivers/intel/dptf/dptf.c
index 71a25b6..c107442 100644
--- a/src/drivers/intel/dptf/dptf.c
+++ b/src/drivers/intel/dptf/dptf.c
@@ -14,10 +14,12 @@
    DPTF_GENERIC_PARTICIPANT_TYPE_TSR	= 0x3,
    DPTF_GENERIC_PARTICIPANT_TYPE_TPCH	= 0x5,
    DPTF_GENERIC_PARTICIPANT_TYPE_CHARGER	= 0xB,
+	DPTF_GENERIC_PARTICIPANT_TYPE_POWER	= 0x11,
 };

#define DEFAULT_CHARGER_STR		"Battery Charger"
 #define DEFAULT_TPCH_STR		"Intel PCH FIVR Participant"
+#define DEFAULT_POWER_STR		"Power Participant"

#define PMC_IPC_COMMAND_FIVR_SIZE	0x8

@@ -368,6 +370,23 @@
    acpigen_write_device_end(); /* TPCH Device */
 }

+static void write_create_tpwr(const struct dptf_platform_info *platform_info)
+{
+	acpigen_write_device("TPWR");
+	acpigen_write_name("_HID");
+	dptf_write_hid(platform_info->use_eisa_hids, platform_info->tpwr_device_hid);
+	acpigen_write_name_string("_UID", "TPWR");
+	acpigen_write_name_string("_STR", DEFAULT_POWER_STR);
+	acpigen_write_name_integer("PTYP", DPTF_GENERIC_PARTICIPANT_TYPE_POWER);
+	acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
+}
+
+static void write_power_methods(const struct dptf_platform_info *platform_info)
+{
+	write_create_tpwr(platform_info);
+	acpigen_write_device_end(); /* TPWR Power Participant Device */
+}
+
 /* _SB.DPTF - note: leaves the Scope open for child devices */
 static void write_open_dptf_device(const struct device *dev,
    			   const struct dptf_platform_info *platform_info)
@@ -406,6 +425,9 @@
    if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TPCH))
    	write_tpch_methods(platform_info);

+	if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TPWR))
+		write_power_methods(platform_info);
+
    acpigen_pop_len(); /* DPTF Device (write_open_dptf_device) */
    acpigen_pop_len(); /* Scope */
 }
diff --git a/src/drivers/intel/dptf/dptf.h b/src/drivers/intel/dptf/dptf.h
index 877aad9..c80e64a 100644
--- a/src/drivers/intel/dptf/dptf.h
+++ b/src/drivers/intel/dptf/dptf.h
@@ -15,6 +15,7 @@
    const char *generic_hid;
    const char *fan_hid;
    const char *tpch_device_hid;
+	const char *tpwr_device_hid;
    struct {
    	const char *set_fivr_low_clock_method;
    	const char *set_fivr_high_clock_method;
diff --git a/src/include/acpi/acpigen_dptf.h b/src/include/acpi/acpigen_dptf.h
index 758398d..c06e683 100644
--- a/src/include/acpi/acpigen_dptf.h
+++ b/src/include/acpi/acpigen_dptf.h
@@ -27,6 +27,7 @@
    DPTF_TEMP_SENSOR_4,
    DPTF_TPCH,
    DPTF_PARTICIPANT_COUNT,
+	DPTF_TPWR,
 };

/* DPTF compile-time constants */