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generic: add gpio-regmap request/free ops patch
This patch is needed on bmips since it fixes issues with GPIOs not being properly configured due to gpio_request_enable not being called on bcm63xx devices. Therefore we can now drop the bcm63268 gpio function patch. Backported from f5b1d340be9488af71e6522c3f10f1ebd1a35446 with the exception of the realtek patch removal. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> (cherry picked from commit f5b1d340be9488af71e6522c3f10f1ebd1a35446)
This commit is contained in:
Álvaro Fernández Rojas
parent
c06d4df974
commit
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@ -1,260 +0,0 @@
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Subject: [PATCH v2] pinctrl: bcm63268: add gpio function
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Date: Tue, 24 Dec 2024 11:36:45 +0100
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From: Kyle Hendry <kylehendrydev@gmail.com>
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There is no guarantee that the bootloader will leave the pin configuration
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in a known default state, so pinctrl needs to be explicitly set in some
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cases. This patch adds a gpio function for drivers that need it, i.e.
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gpio-leds.
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Signed-off-by: Kyle Hendry <kylehendrydev@gmail.com>
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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
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---
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drivers/pinctrl/bcm/pinctrl-bcm63268.c | 71 +++++++++++++++++++++++++-
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1 file changed, 70 insertions(+), 1 deletion(-)
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--- a/drivers/pinctrl/bcm/pinctrl-bcm63268.c
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+++ b/drivers/pinctrl/bcm/pinctrl-bcm63268.c
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@@ -34,6 +34,7 @@
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#define BCM63268_BASEMODE_VDSL_PHY_3 BIT(9) /* GPIOs 26/27 */
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enum bcm63268_pinctrl_reg {
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+ BCM63268_NONE,
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BCM63268_LEDCTRL,
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BCM63268_MODE,
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BCM63268_CTRL,
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@@ -242,6 +243,61 @@ static struct pingroup bcm63268_groups[]
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BCM_PIN_GROUP(vdsl_phy3_grp),
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};
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+static const char * const gpio_groups[] = {
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+ "gpio0",
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+ "gpio1",
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+ "gpio2",
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+ "gpio3",
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+ "gpio4",
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+ "gpio5",
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+ "gpio6",
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+ "gpio7",
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+ "gpio8",
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+ "gpio9",
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+ "gpio10",
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+ "gpio11",
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+ "gpio12",
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+ "gpio13",
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+ "gpio14",
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+ "gpio15",
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+ "gpio16",
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+ "gpio17",
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+ "gpio18",
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+ "gpio19",
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+ "gpio20",
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+ "gpio21",
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+ "gpio22",
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+ "gpio23",
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+ "gpio24",
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+ "gpio25",
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+ "gpio26",
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+ "gpio27",
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+ "gpio28",
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+ "gpio29",
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+ "gpio30",
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+ "gpio31",
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+ "gpio32",
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+ "gpio33",
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+ "gpio34",
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+ "gpio35",
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+ "gpio36",
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+ "gpio37",
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+ "gpio38",
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+ "gpio39",
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+ "gpio40",
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+ "gpio41",
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+ "gpio42",
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+ "gpio43",
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+ "gpio44",
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+ "gpio45",
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+ "gpio46",
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+ "gpio47",
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+ "gpio48",
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+ "gpio49",
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+ "gpio50",
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+ "gpio51",
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+};
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+
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static const char * const led_groups[] = {
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"gpio0",
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"gpio1",
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@@ -394,6 +450,14 @@ static const char * const vdsl_phy_overr
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"vdsl_phy_override_3_grp",
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};
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+#define BCM63268_GPIO_FUN(n) \
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+ { \
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+ .name = #n, \
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+ .groups = n##_groups, \
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+ .num_groups = ARRAY_SIZE(n##_groups), \
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+ .reg = BCM63268_NONE, \
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+ }
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+
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#define BCM63268_LED_FUN(n) \
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{ \
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.name = #n, \
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@@ -428,6 +492,7 @@ static const char * const vdsl_phy_overr
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}
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static const struct bcm63268_function bcm63268_funcs[] = {
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+ BCM63268_GPIO_FUN(gpio),
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BCM63268_LED_FUN(led),
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BCM63268_MODE_FUN(serial_led_clk),
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BCM63268_MODE_FUN(serial_led_data),
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@@ -542,6 +607,9 @@ static int bcm63268_pinctrl_set_mux(stru
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bcm63268_set_gpio(pc, pg->pins[i]);
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switch (f->reg) {
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+ case BCM63268_NONE:
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+ reg = 0;
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+ break;
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case BCM63268_LEDCTRL:
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reg = BCM63268_LED_REG;
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mask = BIT(pg->pins[0]);
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@@ -567,7 +635,8 @@ static int bcm63268_pinctrl_set_mux(stru
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return -EINVAL;
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}
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- regmap_update_bits(pc->regs, reg, mask, val);
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+ if (reg)
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+ regmap_update_bits(pc->regs, reg, mask, val);
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return 0;
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}
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@ -0,0 +1,131 @@
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From patchwork Tue Jan 7 20:16:20 2025
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X-Patchwork-Submitter: Sander Vanheule <sander@svanheule.net>
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X-Patchwork-Id: 2031059
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From: Sander Vanheule <sander@svanheule.net>
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To: Michael Walle <mwalle@kernel.org>,
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Linus Walleij <linus.walleij@linaro.org>,
|
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Bartosz Golaszewski <brgl@bgdev.pl>,
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linux-gpio@vger.kernel.org,
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linux-kernel@vger.kernel.org
|
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Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>,
|
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jonas.gorski@gmail.com, kylehendrydev@gmail.com,
|
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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
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Message-ID: <20250107201621.12467-1-sander@svanheule.net>
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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;
|
||||
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Block a user