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Subject[PATCH 14/14] clk: meson: rework and clean drivers dependencies
Date
Initially, the meson clock directory only hosted 2 controllers drivers,
for meson8 and gxbb. At the time, both used the same set of clock drivers
so managing the dependencies was not a big concern.

Since this ancient time, entropy did its job, controllers with different
requirement and specific clock drivers have been added. Unfortunately, we
did not do a great job at managing the dependencies between the
controllers and the different clock drivers. Some drivers, such as
clk-phase or vid-pll-div, are compiled even if they are useless on the
target (meson8). As we are adding new controllers, we need to be able to
pick a driver w/o pulling the whole thing.

The patch aims to clean things up by:
* providing a dedicated CONFIG_ for each clock drivers
* allowing clock drivers to be compiled as a modules, if possible
* stating explicitly which drivers are required by each controller.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
drivers/clk/meson/Kconfig | 82 +++++++++++++++++++++++++++-----------
drivers/clk/meson/Makefile | 21 ++++++----
2 files changed, 71 insertions(+), 32 deletions(-)

diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
index 2479dab09d70..f2e757aea4f1 100644
--- a/drivers/clk/meson/Kconfig
+++ b/drivers/clk/meson/Kconfig
@@ -1,27 +1,47 @@
-config COMMON_CLK_AMLOGIC
- bool
- depends on ARCH_MESON || COMPILE_TEST
- select COMMON_CLK_REGMAP_MESON
+config COMMON_CLK_MESON_INPUT
+ tristate

-config COMMON_CLK_AMLOGIC_AUDIO
- bool
- depends on ARCH_MESON || COMPILE_TEST
- select COMMON_CLK_AMLOGIC
+config COMMON_CLK_MESON_REGMAP
+ tristate
+ select REGMAP

-config COMMON_CLK_MESON_AO
- bool
- depends on OF
- depends on ARCH_MESON || COMPILE_TEST
- select COMMON_CLK_REGMAP_MESON
- select RESET_CONTROLLER
+config COMMON_CLK_MESON_DUALDIV
+ tristate
+ select COMMON_CLK_MESON_REGMAP

-config COMMON_CLK_REGMAP_MESON
- bool
- select REGMAP
+config COMMON_CLK_MESON_MPLL
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_PHASE
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_PLL
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_SCLK_DIV
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_VID_PLL_DIV
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_AO_CLKC
+ tristate
+ select COMMON_CLK_MESON_REGMAP
+ select COMMON_CLK_MESON_INPUT
+ select RESET_CONTROLLER

config COMMON_CLK_MESON8B
bool
- select COMMON_CLK_AMLOGIC
+ depends on ARCH_MESON
+ select COMMON_CLK_MESON_REGMAP
+ select COMMON_CLK_MESON_MPLL
+ select COMMON_CLK_MESON_PLL
+ select MFD_SYSCON
select RESET_CONTROLLER
help
Support for the clock controller on AmLogic S802 (Meson8),
@@ -30,8 +50,14 @@ config COMMON_CLK_MESON8B

config COMMON_CLK_GXBB
bool
- select COMMON_CLK_AMLOGIC
- select COMMON_CLK_MESON_AO
+ depends on ARCH_MESON
+ select COMMON_CLK_MESON_INPUT
+ select COMMON_CLK_MESON_REGMAP
+ select COMMON_CLK_MESON_DUALDIV
+ select COMMON_CLK_MESON_VID_PLL_DIV
+ select COMMON_CLK_MESON_MPLL
+ select COMMON_CLK_MESON_PLL
+ select COMMON_CLK_MESON_AO_CLKC
select MFD_SYSCON
help
Support for the clock controller on AmLogic S905 devices, aka gxbb.
@@ -39,8 +65,13 @@ config COMMON_CLK_GXBB

config COMMON_CLK_AXG
bool
- select COMMON_CLK_AMLOGIC
- select COMMON_CLK_MESON_AO
+ depends on ARCH_MESON
+ select COMMON_CLK_MESON_INPUT
+ select COMMON_CLK_MESON_REGMAP
+ select COMMON_CLK_MESON_DUALDIV
+ select COMMON_CLK_MESON_MPLL
+ select COMMON_CLK_MESON_PLL
+ select COMMON_CLK_MESON_AO_CLKC
select MFD_SYSCON
help
Support for the clock controller on AmLogic A113D devices, aka axg.
@@ -48,8 +79,11 @@ config COMMON_CLK_AXG

config COMMON_CLK_AXG_AUDIO
tristate "Meson AXG Audio Clock Controller Driver"
- depends on COMMON_CLK_AXG
- select COMMON_CLK_AMLOGIC_AUDIO
+ depends on ARCH_MESON
+ select COMMON_CLK_MESON_INPUT
+ select COMMON_CLK_MESON_REGMAP
+ select COMMON_CLK_MESON_PHASE
+ select COMMON_CLK_MESON_SCLK_DIV
select REGMAP_MMIO
help
Support for the audio clock controller on AmLogic A113D devices,
diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile
index 2b9490dd9878..8baec10a49a1 100644
--- a/drivers/clk/meson/Makefile
+++ b/drivers/clk/meson/Makefile
@@ -2,12 +2,17 @@
# Makefile for Meson specific clk
#

-obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-mpll.o clk-phase.o vid-pll-div.o
-obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-input.o clk-dualdiv.o
-obj-$(CONFIG_COMMON_CLK_AMLOGIC_AUDIO) += sclk-div.o
-obj-$(CONFIG_COMMON_CLK_MESON_AO) += meson-aoclk.o
+obj-$(CONFIG_COMMON_CLK_MESON_INPUT) += clk-input.o
+obj-$(CONFIG_COMMON_CLK_MESON_REGMAP) += clk-regmap.o
+obj-$(CONFIG_COMMON_CLK_MESON_DUALDIV) += clk-dualdiv.o
+obj-$(CONFIG_COMMON_CLK_MESON_MPLL) += clk-mpll.o
+obj-$(CONFIG_COMMON_CLK_MESON_PHASE) += clk-phase.o
+obj-$(CONFIG_COMMON_CLK_MESON_PLL) += clk-pll.o
+obj-$(CONFIG_COMMON_CLK_MESON_SCLK_DIV) += sclk-div.o
+obj-$(CONFIG_COMMON_CLK_MESON_VID_PLL_DIV) += vid-pll-div.o
+obj-$(CONFIG_COMMON_CLK_MESON_AO_CLKC) += meson-aoclk.o
+
obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o
-obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
-obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
-obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
-obj-$(CONFIG_COMMON_CLK_REGMAP_MESON) += clk-regmap.o
+obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
+obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
+obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
--
2.20.1
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