pinctrl: meson: separate soc drivers

When meson pinctrl is enabled, all meson platforms pinctrl drivers are
built in the kernel, with a significant amount of data.

This leads to situation where pinctrl drivers targeting an architecture
are also compiled and shipped on another one (ex: meson8 - ARM - compiled
and shipped on ARM64 builds). This is a waste of memory we can easily
avoid.

This change makes 4 pinctrl drivers (1 per SoC) out the original single
driver, allowing to compile and ship only the ones required.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 23 insertions, 2 deletions

diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
index 7af296db48c8..4d61df09bc3f 100644
--- a/drivers/pinctrl/meson/pinctrl-meson8b.c
+++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
@@ -904,7 +904,7 @@ static struct meson_bank meson8b_aobus_banks[] = {
 	BANK("AO",   GPIOAO_0, GPIO_TEST_N, 0, 13, 0,  0,  0, 16,  0,  0,  0, 16,  1,  0),
 };
 
-struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
+static struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
 	.name		= "cbus-banks",
 	.pins		= meson8b_cbus_pins,
 	.groups		= meson8b_cbus_groups,
@@ -916,7 +916,7 @@ struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
 	.num_banks	= ARRAY_SIZE(meson8b_cbus_banks),
 };
 
-struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
+static struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
 	.name		= "aobus-banks",
 	.pins		= meson8b_aobus_pins,
 	.groups		= meson8b_aobus_groups,
@@ -927,3 +927,24 @@ struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
 	.num_funcs	= ARRAY_SIZE(meson8b_aobus_functions),
 	.num_banks	= ARRAY_SIZE(meson8b_aobus_banks),
 };
+
+static const struct of_device_id meson8b_pinctrl_dt_match[] = {
+	{
+		.compatible = "amlogic,meson8b-cbus-pinctrl",
+		.data = &meson8b_cbus_pinctrl_data,
+	},
+	{
+		.compatible = "amlogic,meson8b-aobus-pinctrl",
+		.data = &meson8b_aobus_pinctrl_data,
+	},
+	{ },
+};
+
+static struct platform_driver meson8b_pinctrl_driver = {
+	.probe		= meson_pinctrl_probe,
+	.driver = {
+		.name	= "meson8b-pinctrl",
+		.of_match_table = meson8b_pinctrl_dt_match,
+	},
+};
+builtin_platform_driver(meson8b_pinctrl_driver);