clk: meson: migrate meson-eeclk out of hw_onecell_data to drop NR_CLKS

The way hw_onecell_data is declared:
struct clk_hw_onecell_data {
unsigned int num;
struct clk_hw *hws[];
};

makes it impossible to have the clk_hw table declared outside while
using ARRAY_SIZE() to determine ".num" due to ".hws" being a flexible
array member.

Completely move out of hw_onecell_data and add a custom
devm_of_clk_add_hw_provider() "get" callback to retrieve the clk_hw
from the meson_eeclkc_data struct to finally get rid on the
NR_CLKS define.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230607-topic-amlogic-upstream-clkid-public-migration-v2-2-38172d17c27a@linaro.org
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

clk: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> # samsung
Acked-by: Heiko Stuebner <heiko@sntech.de> #rockchip
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # versaclock5
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230718143156.1066339-1-robh@kernel.org
Acked-by: Abel Vesa <abel.vesa@linaro.org> #imx
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

clk: meson: Hold reference returned by of_get_parent()

We should hold the reference returned by of_get_parent() and use it
to call of_node_put() for refcount balance.

Fixes: 88e2da81241e ("clk: meson: aoclk: refactor common code into dedicated file")
Fixes: 6682bd4d443f ("clk: meson: factorise meson64 peripheral clock controller drivers")
Fixes: bb6eddd1d28c ("clk: meson: meson8b: use the HHI syscon if available")

Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220628141038.168383-1-windhl@126.com
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

clk: meson: enable building as modules

Make it possible to build all clk drivers as modules, but default
remains built-in.

No functional changes.

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20201118191405.36798-1-khilman@baylibre.com

clk: meson: remove ee input bypass clocks

During probe, bypass clocks (i.e. ee-in-xtal) are made from device-tree
inputs to provide input clocks which can be access through global name.
The cons of this method are the duplicated clocks, means more string
comparison.

Specify parent directly with device-tree clock name.

Remove the bypass clock registration from the ee probe function.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

clk: meson: eeclk: add init regs

Like the PLL and MPLL, the controller may require some magic setting to
be applied on startup.

This is needed when the initial setting is not applied by the boot ROM.
The controller need to do it when the setting applies to several clock,
like all the MPLLs in the case of g12a.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

clk: meson: factorise meson64 peripheral clock controller drivers

The function used to probe the peripheral clock controller of the arm64
amlogic SoCs is mostly the same. We now have 3 of those controllers so
it is time to factorize things a bit.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201145345.6795-5-jbrunet@baylibre.com