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Message-ID: <20241207223335.17535-1-kylehendrydev@gmail.com>
Date: Sat, 7 Dec 2024 14:33:35 -0800
From: Kyle Hendry <kylehendrydev@...il.com>
To: linus.walleij@...aro.org
Cc: linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org,
Kyle Hendry <kylehendrydev@...il.com>
Subject: [PATCH] pinctrl: bcm63268: Add gpio function
There is no guarantee that the bootloader will leave the pin configuration
in a known default state, so pinctrl needs to be explicitly set in some
cases. This patch adds a gpio function for drivers that need it, i.e.
gpio-leds.
Signed-off-by: Kyle Hendry <kylehendrydev@...il.com>
---
drivers/pinctrl/bcm/pinctrl-bcm63268.c | 68 ++++++++++++++++++++++++++
1 file changed, 68 insertions(+)
diff --git a/drivers/pinctrl/bcm/pinctrl-bcm63268.c b/drivers/pinctrl/bcm/pinctrl-bcm63268.c
index 80c2fc55ffa2..5ad86b40f0b3 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm63268.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm63268.c
@@ -38,6 +38,7 @@ enum bcm63268_pinctrl_reg {
BCM63268_MODE,
BCM63268_CTRL,
BCM63268_BASEMODE,
+ BCM63268_NOREG,
};
struct bcm63268_function {
@@ -242,6 +243,61 @@ static struct pingroup bcm63268_groups[] = {
BCM_PIN_GROUP(vdsl_phy3_grp),
};
+static const char * const gpio_groups[] = {
+ "gpio0",
+ "gpio1",
+ "gpio2",
+ "gpio3",
+ "gpio4",
+ "gpio5",
+ "gpio6",
+ "gpio7",
+ "gpio8",
+ "gpio9",
+ "gpio10",
+ "gpio11",
+ "gpio12",
+ "gpio13",
+ "gpio14",
+ "gpio15",
+ "gpio16",
+ "gpio17",
+ "gpio18",
+ "gpio19",
+ "gpio20",
+ "gpio21",
+ "gpio22",
+ "gpio23",
+ "gpio24",
+ "gpio25",
+ "gpio26",
+ "gpio27",
+ "gpio28",
+ "gpio29",
+ "gpio30",
+ "gpio31",
+ "gpio32",
+ "gpio33",
+ "gpio34",
+ "gpio35",
+ "gpio36",
+ "gpio37",
+ "gpio38",
+ "gpio39",
+ "gpio40",
+ "gpio41",
+ "gpio42",
+ "gpio43",
+ "gpio44",
+ "gpio45",
+ "gpio46",
+ "gpio47",
+ "gpio48",
+ "gpio49",
+ "gpio50",
+ "gpio51",
+};
+
static const char * const led_groups[] = {
"gpio0",
"gpio1",
@@ -427,7 +483,16 @@ static const char * const vdsl_phy_override_3_groups[] = {
.mask = val, \
}
+#define BCM63268_NOMODE_FUN(n) \
+ { \
+ .name = #n, \
+ .groups = n##_groups, \
+ .num_groups = ARRAY_SIZE(n##_groups), \
+ .reg = BCM63268_NOREG, \
+ }
+
static const struct bcm63268_function bcm63268_funcs[] = {
+ BCM63268_NOMODE_FUN(gpio),
BCM63268_LED_FUN(led),
BCM63268_MODE_FUN(serial_led_clk),
BCM63268_MODE_FUN(serial_led_data),
@@ -562,6 +627,9 @@ static int bcm63268_pinctrl_set_mux(struct pinctrl_dev *pctldev,
mask = f->mask;
val = f->mask;
break;
+ case BCM63268_NOREG:
+ /*Do nothing, leave registers as default*/
+ break;
default:
WARN_ON(1);
return -EINVAL;
--
2.43.0
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