linux-kernel - [PATCH v2 2/2] of: property: Add device link support for pinctrl-0 through pinctrl-8

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Message-Id: <20200724234415.1651639-2-saravanak@google.com>
Date:   Fri, 24 Jul 2020 16:44:15 -0700
From:   Saravana Kannan <saravanak@...gle.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] of: property: Add device link support for pinctrl-0
 through pinctrl-8

Add support for pinctrl-0 through pinctrl-8 explicitly instead of trying
to add support for pinctrl-%d properties.

Of all the pinctrl-* properties in dts files (20322), only 47% (9531)
are pinctrl-%d properties. Of all the pinctrl-%d properties, 99.5%
(9486) are made up of pinctrl-[0-2]. 'pinctrl-8' is the current maximum
found in dts files.

Trying to parse all pinctrl-* properties and checking for pinctrl-%d is
unnecessarily complicated. So, just add support for pinctrl-[0-8] for
now. In the unlikely event we ever exceed pinctrl-8, we can come back
and improve this.

Signed-off-by: Saravana Kannan <saravanak@...gle.com>
---
v1->v2:
- Clarified in commit text that pinctrl-8 is the max found in the dts
  files.

 drivers/of/property.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index b06edeb1f88b..d40d923ffeaf 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1274,6 +1274,15 @@ DEFINE_SIMPLE_PROP(interrupts_extended, "interrupts-extended",
 DEFINE_SIMPLE_PROP(nvmem_cells, "nvmem-cells", NULL)
 DEFINE_SIMPLE_PROP(phys, "phys", "#phy-cells")
 DEFINE_SIMPLE_PROP(wakeup_parent, "wakeup-parent", NULL)
+DEFINE_SIMPLE_PROP(pinctrl0, "pinctrl-0", NULL)
+DEFINE_SIMPLE_PROP(pinctrl1, "pinctrl-1", NULL)
+DEFINE_SIMPLE_PROP(pinctrl2, "pinctrl-2", NULL)
+DEFINE_SIMPLE_PROP(pinctrl3, "pinctrl-3", NULL)
+DEFINE_SIMPLE_PROP(pinctrl4, "pinctrl-4", NULL)
+DEFINE_SIMPLE_PROP(pinctrl5, "pinctrl-5", NULL)
+DEFINE_SIMPLE_PROP(pinctrl6, "pinctrl-6", NULL)
+DEFINE_SIMPLE_PROP(pinctrl7, "pinctrl-7", NULL)
+DEFINE_SIMPLE_PROP(pinctrl8, "pinctrl-8", NULL)
 DEFINE_SUFFIX_PROP(regulators, "-supply", NULL)
 DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells")
 DEFINE_SUFFIX_PROP(gpios, "-gpios", "#gpio-cells")
@@ -1303,6 +1312,15 @@ static const struct supplier_bindings of_supplier_bindings[] = {
 	{ .parse_prop = parse_nvmem_cells, },
 	{ .parse_prop = parse_phys, },
 	{ .parse_prop = parse_wakeup_parent, },
+	{ .parse_prop = parse_pinctrl0, },
+	{ .parse_prop = parse_pinctrl1, },
+	{ .parse_prop = parse_pinctrl2, },
+	{ .parse_prop = parse_pinctrl3, },
+	{ .parse_prop = parse_pinctrl4, },
+	{ .parse_prop = parse_pinctrl5, },
+	{ .parse_prop = parse_pinctrl6, },
+	{ .parse_prop = parse_pinctrl7, },
+	{ .parse_prop = parse_pinctrl8, },
 	{ .parse_prop = parse_regulators, },
 	{ .parse_prop = parse_gpio, },
 	{ .parse_prop = parse_gpios, },
-- 
2.28.0.rc0.142.g3c755180ce-goog