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-From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
-To: linus.walleij@linaro.org,
- kylehendrydev@gmail.com,
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-Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
-Subject: [PATCH v2] pinctrl: bcm63268: add gpio function
-Date: Tue, 24 Dec 2024 11:36:45 +0100
-Message-Id: <20241224103645.1709996-1-noltari@gmail.com>
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-
-From: Kyle Hendry <kylehendrydev@gmail.com>
-
-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@gmail.com>
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- drivers/pinctrl/bcm/pinctrl-bcm63268.c | 71 +++++++++++++++++++++++++-
- 1 file changed, 70 insertions(+), 1 deletion(-)
-
---- a/drivers/pinctrl/bcm/pinctrl-bcm63268.c
-+++ b/drivers/pinctrl/bcm/pinctrl-bcm63268.c
-@@ -34,6 +34,7 @@
- #define BCM63268_BASEMODE_VDSL_PHY_3 BIT(9) /* GPIOs 26/27 */
-
- enum bcm63268_pinctrl_reg {
-+ BCM63268_NONE,
- BCM63268_LEDCTRL,
- BCM63268_MODE,
- BCM63268_CTRL,
-@@ -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",
-@@ -394,6 +450,14 @@ static const char * const vdsl_phy_overr
- "vdsl_phy_override_3_grp",
- };
-
-+#define BCM63268_GPIO_FUN(n) \
-+ { \
-+ .name = #n, \
-+ .groups = n##_groups, \
-+ .num_groups = ARRAY_SIZE(n##_groups), \
-+ .reg = BCM63268_NONE, \
-+ }
-+
- #define BCM63268_LED_FUN(n) \
- { \
- .name = #n, \
-@@ -428,6 +492,7 @@ static const char * const vdsl_phy_overr
- }
-
- static const struct bcm63268_function bcm63268_funcs[] = {
-+ BCM63268_GPIO_FUN(gpio),
- BCM63268_LED_FUN(led),
- BCM63268_MODE_FUN(serial_led_clk),
- BCM63268_MODE_FUN(serial_led_data),
-@@ -542,6 +607,9 @@ static int bcm63268_pinctrl_set_mux(stru
- bcm63268_set_gpio(pc, pg->pins[i]);
-
- switch (f->reg) {
-+ case BCM63268_NONE:
-+ reg = 0;
-+ break;
- case BCM63268_LEDCTRL:
- reg = BCM63268_LED_REG;
- mask = BIT(pg->pins[0]);
-@@ -567,7 +635,8 @@ static int bcm63268_pinctrl_set_mux(stru
- return -EINVAL;
- }
-
-- regmap_update_bits(pc->regs, reg, mask, val);
-+ if (reg)
-+ regmap_update_bits(pc->regs, reg, mask, val);
-
- return 0;
- }
--- /dev/null
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+From: Sander Vanheule <sander@svanheule.net>
+To: Michael Walle <mwalle@kernel.org>,
+ Linus Walleij <linus.walleij@linaro.org>,
+ Bartosz Golaszewski <brgl@bgdev.pl>,
+ linux-gpio@vger.kernel.org,
+ linux-kernel@vger.kernel.org
+Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>,
+ jonas.gorski@gmail.com, kylehendrydev@gmail.com,
+ florian.fainelli@broadcom.com, Sander Vanheule <sander@svanheule.net>
+Subject: [PATCH] gpio: regmap: Use generic request/free ops
+Date: Tue, 7 Jan 2025 21:16:20 +0100
+Message-ID: <20250107201621.12467-1-sander@svanheule.net>
+X-Mailer: git-send-email 2.47.1
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+MIME-Version: 1.0
+
+Set the gpiochip request and free ops to the generic implementations.
+This way a user can provide a gpio-ranges property defined for a pinmux,
+easing muxing of gpio functions. Provided that the pin controller
+implementents the pinmux op .gpio_request_enable(), pins will
+automatically be muxed to their GPIO function when requested.
+
+Signed-off-by: Sander Vanheule <sander@svanheule.net>
+Acked-by: Michael Walle <mwalle@kernel.org>
+---
+Álvaro has submitted a similar patch today. My implementation's impact
+is more limited, but I hadn't gotten around to submitting it yet.
+
+For the original (short) discussion, see:
+https://lore.kernel.org/linux-gpio/20250107102735.317446-1-noltari@gmail.com/T/#t
+
+ drivers/gpio/gpio-regmap.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/gpio/gpio-regmap.c
++++ b/drivers/gpio/gpio-regmap.c
+@@ -262,6 +262,8 @@ struct gpio_regmap *gpio_regmap_register
+ chip->label = config->label ?: dev_name(config->parent);
+ chip->can_sleep = regmap_might_sleep(config->regmap);
+
++ chip->request = gpiochip_generic_request;
++ chip->free = gpiochip_generic_free;
+ chip->get = gpio_regmap_get;
+ if (gpio->reg_set_base && gpio->reg_clr_base)
+ chip->set = gpio_regmap_set_with_clear;
projects / openwrt / openwrt.git / commitdiff