Add a power domain framework/uclass
Many SoCs allow power to be applied to or removed from portions of the SoC
(power domains). This may be used to save power. This API provides the
means to control such power management hardware.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/Makefile b/test/dm/Makefile
index cad3374..1885e17 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -24,6 +24,7 @@
obj-$(CONFIG_DM_MAILBOX) += mailbox.o
obj-$(CONFIG_DM_MMC) += mmc.o
obj-$(CONFIG_DM_PCI) += pci.o
+obj-$(CONFIG_POWER_DOMAIN) += power-domain.o
obj-$(CONFIG_RAM) += ram.o
obj-y += regmap.o
obj-$(CONFIG_REMOTEPROC) += remoteproc.o
diff --git a/test/dm/power-domain.c b/test/dm/power-domain.c
new file mode 100644
index 0000000..379a8fa
--- /dev/null
+++ b/test/dm/power-domain.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2016, NVIDIA CORPORATION.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <asm/power-domain.h>
+#include <test/ut.h>
+
+/* This must match the specifier for power-domains in the DT node */
+#define TEST_POWER_DOMAIN 2
+
+static int dm_test_power_domain(struct unit_test_state *uts)
+{
+ struct udevice *dev_power_domain;
+ struct udevice *dev_test;
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_POWER_DOMAIN,
+ "power-domain",
+ &dev_power_domain));
+ ut_asserteq(0, sandbox_power_domain_query(dev_power_domain, 0));
+ ut_asserteq(0, sandbox_power_domain_query(dev_power_domain,
+ TEST_POWER_DOMAIN));
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "power-domain-test",
+ &dev_test));
+ ut_assertok(sandbox_power_domain_test_get(dev_test));
+
+ ut_assertok(sandbox_power_domain_test_on(dev_test));
+ ut_asserteq(0, sandbox_power_domain_query(dev_power_domain, 0));
+ ut_asserteq(1, sandbox_power_domain_query(dev_power_domain,
+ TEST_POWER_DOMAIN));
+
+ ut_assertok(sandbox_power_domain_test_off(dev_test));
+ ut_asserteq(0, sandbox_power_domain_query(dev_power_domain, 0));
+ ut_asserteq(0, sandbox_power_domain_query(dev_power_domain,
+ TEST_POWER_DOMAIN));
+
+ ut_assertok(sandbox_power_domain_test_free(dev_test));
+
+ return 0;
+}
+DM_TEST(dm_test_power_domain, DM_TESTF_SCAN_FDT);