power: Refactor Makefile rules

Move the power/ rules into drivers/power to avoid clutter in the Makefile
and drivers/Makefile files.

We must select SPL_POWER if SPL_POWER_DOMAIN is used, since the two are
currently independent and boards do not necessarily enable SPL_POWER.

Add a TPL_POWER as well, as that is used by one board.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>

Makefile

@@ -815,13 +815,6 @@ libs-y += disk/
 libs-y += drivers/
 libs-y += drivers/net/
 libs-y += drivers/net/phy/
-libs-y += drivers/power/ \
-	drivers/power/domain/ \
-	drivers/power/fuel_gauge/ \
-	drivers/power/mfd/ \
-	drivers/power/pmic/ \
-	drivers/power/battery/ \
-	drivers/power/regulator/
 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/

common/spl/Kconfig

@@ -1038,6 +1038,7 @@ config SPL_POWER
 
 config SPL_POWER_DOMAIN
 	bool "Support power domain drivers"
+	select SPL_POWER
 	help
 	  Enable support for power domain control in SPL. Many SoCs allow
 	  power to be applied to or removed from portions of the SoC (power
@@ -1425,6 +1426,18 @@ config TPL_NEEDS_SEPARATE_STACK
 	  Enable, if the TPL stage should not inherit its initial
 	  stack-pointer from the settings for the SPL stage.
 
+config TPL_POWER
+	bool "Support power drivers"
+	help
+	  Enable support for power control in TPL. This includes support
+	  for PMICs (Power-management Integrated Circuits) and some of the
+	  features provided by PMICs. In particular, voltage regulators can
+	  be used to enable/disable power and vary its voltage. That can be
+	  useful in TPL to turn on boot peripherals and adjust CPU voltage
+	  so that the clock speed can be increased. This enables the drivers
+	  in drivers/power, drivers/power/pmic and drivers/power/regulator
+	  as part of an TPL build.
+
 config TPL_TEXT_BASE
 	hex "Base address for the .text section of the TPL stage"
 	depends on TPL_NEEDS_SEPARATE_TEXT_BASE

configs/chromebook_coral_defconfig

@@ -44,7 +44,9 @@ CONFIG_SPL_SEPARATE_BSS=y
 CONFIG_SPL_CPU=y
 CONFIG_SPL_DM_SPI_FLASH=y
 CONFIG_SPL_PCI=y
+CONFIG_SPL_POWER=y
 # CONFIG_SPL_SPI_FLASH_TINY is not set
+CONFIG_TPL_POWER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_PMC=y

drivers/Makefile

@@ -22,6 +22,7 @@ obj-$(CONFIG_$(SPL_TPL_)PCH) += pch/
 obj-$(CONFIG_$(SPL_TPL_)PCI) += pci/
 obj-$(CONFIG_$(SPL_TPL_)PHY) += phy/
 obj-$(CONFIG_$(SPL_TPL_)PINCTRL) += pinctrl/
+obj-$(CONFIG_$(SPL_TPL_)POWER) += power/
 obj-$(CONFIG_$(SPL_TPL_)RAM) += ram/
 obj-$(CONFIG_$(SPL_TPL_)RTC) += rtc/
 obj-$(CONFIG_$(SPL_TPL_)SERIAL) += serial/
@@ -32,7 +33,6 @@ obj-$(CONFIG_$(SPL_)DM_MAILBOX) += mailbox/
 obj-$(CONFIG_$(SPL_)REMOTEPROC) += remoteproc/
 obj-$(CONFIG_$(SPL_)SYSINFO) += sysinfo/
 obj-$(CONFIG_$(SPL_TPL_)TPM) += tpm/
-obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += power/acpi_pmc/
 obj-$(CONFIG_XEN) += xen/
 obj-$(CONFIG_$(SPL_)FPGA) += fpga/
 
@@ -47,9 +47,6 @@ obj-$(CONFIG_ARMADA_XP) += ddr/marvell/axp/
 obj-$(CONFIG_$(SPL_)ALTERA_SDRAM) += ddr/altera/
 obj-$(CONFIG_ARCH_IMX8M) += ddr/imx/imx8m/
 obj-$(CONFIG_IMX8ULP_DRAM) += ddr/imx/imx8ulp/
-obj-$(CONFIG_SPL_POWER) += power/ power/pmic/
-obj-$(CONFIG_SPL_POWER) += power/regulator/
-obj-$(CONFIG_SPL_POWER_DOMAIN) += power/domain/
 obj-$(CONFIG_SPL_DM_RESET) += reset/
 obj-$(CONFIG_SPL_ETH) += net/
 obj-$(CONFIG_SPL_ETH) += net/phy/

drivers/power/Makefile

@@ -3,6 +3,14 @@
 # Copyright (c) 2009 Wind River Systems, Inc.
 # Tom Rix <Tom.Rix at windriver.com>
 
+obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += acpi_pmc/
+obj-y += battery/
+obj-$(CONFIG_$(SPL_TPL_)POWER_DOMAIN) += domain/
+obj-y += fuel_gauge/
+obj-y += mfd/
+obj-y += pmic/
+obj-y += regulator/
+
 obj-$(CONFIG_AXP152_POWER)	+= axp152.o
 obj-$(CONFIG_AXP209_POWER)	+= axp209.o
 obj-$(CONFIG_AXP221_POWER)	+= axp221.o

drivers/power/acpi_pmc/Makefile

@@ -2,5 +2,5 @@
 #
 # Copyright 2019 Google LLC
 
-obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += acpi-pmc-uclass.o
+obj-y += acpi-pmc-uclass.o
 obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC_SANDBOX) += sandbox.o pmc_emul.o