You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
609 lines
16 KiB
609 lines
16 KiB
From bd9c250ef85e6f99aa5d59b21abb87d0a48f2f61 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jonas.gorski@gmail.com>
|
|
Date: Fri, 24 Jun 2016 22:20:39 +0200
|
|
Subject: [PATCH 15/16] pinctrl: add a pincontrol driver for BCM6318
|
|
|
|
Add a pincontrol driver for BCM6318. BCM6318 allows muxing most GPIOs
|
|
to different functions. BCM6318 is similar to BCM6328 with the addition
|
|
of a pad register, and the GPIO meaning of the mux register changes
|
|
based on the GPIO number.
|
|
|
|
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
|
|
---
|
|
drivers/pinctrl/bcm63xx/Kconfig | 7 +
|
|
drivers/pinctrl/bcm63xx/Makefile | 1 +
|
|
drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c | 564 ++++++++++++++++++++++++++++++
|
|
3 files changed, 572 insertions(+)
|
|
create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c
|
|
|
|
--- a/drivers/pinctrl/bcm63xx/Kconfig
|
|
+++ b/drivers/pinctrl/bcm63xx/Kconfig
|
|
@@ -2,6 +2,13 @@ config PINCTRL_BCM63XX
|
|
bool
|
|
select GPIO_GENERIC
|
|
|
|
+config PINCTRL_BCM6318
|
|
+ bool "BCM6318 pincontrol driver" if COMPILE_TEST
|
|
+ select PINMUX
|
|
+ select PINCONF
|
|
+ select PINCTRL_BCM63XX
|
|
+ select GENERIC_PINCONF
|
|
+
|
|
config PINCTRL_BCM6328
|
|
bool "BCM6328 pincontrol driver" if COMPILE_TEST
|
|
select PINMUX
|
|
--- a/drivers/pinctrl/bcm63xx/Makefile
|
|
+++ b/drivers/pinctrl/bcm63xx/Makefile
|
|
@@ -1,4 +1,5 @@
|
|
obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o
|
|
+obj-$(CONFIG_PINCTRL_BCM6318) += pinctrl-bcm6318.o
|
|
obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl-bcm6328.o
|
|
obj-$(CONFIG_PINCTRL_BCM6348) += pinctrl-bcm6348.o
|
|
obj-$(CONFIG_PINCTRL_BCM6358) += pinctrl-bcm6358.o
|
|
--- /dev/null
|
|
+++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c
|
|
@@ -0,0 +1,564 @@
|
|
+/*
|
|
+ * This file is subject to the terms and conditions of the GNU General Public
|
|
+ * License. See the file "COPYING" in the main directory of this archive
|
|
+ * for more details.
|
|
+ *
|
|
+ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
|
|
+ */
|
|
+
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/spinlock.h>
|
|
+#include <linux/bitops.h>
|
|
+#include <linux/gpio.h>
|
|
+#include <linux/gpio/driver.h>
|
|
+#include <linux/of.h>
|
|
+#include <linux/of_gpio.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/platform_device.h>
|
|
+
|
|
+#include <linux/pinctrl/pinconf.h>
|
|
+#include <linux/pinctrl/pinconf-generic.h>
|
|
+#include <linux/pinctrl/pinmux.h>
|
|
+#include <linux/pinctrl/machine.h>
|
|
+
|
|
+#include "../core.h"
|
|
+#include "../pinctrl-utils.h"
|
|
+
|
|
+#include "pinctrl-bcm63xx.h"
|
|
+
|
|
+#define BCM6318_NGPIO 50
|
|
+
|
|
+struct bcm6318_pingroup {
|
|
+ const char *name;
|
|
+ const unsigned * const pins;
|
|
+ const unsigned num_pins;
|
|
+};
|
|
+
|
|
+struct bcm6318_function {
|
|
+ const char *name;
|
|
+ const char * const *groups;
|
|
+ const unsigned num_groups;
|
|
+
|
|
+ unsigned mode_val:1;
|
|
+ unsigned mux_val:2;
|
|
+};
|
|
+
|
|
+struct bcm6318_pinctrl {
|
|
+ struct pinctrl_dev *pctldev;
|
|
+ struct pinctrl_desc desc;
|
|
+
|
|
+ void __iomem *mode;
|
|
+ void __iomem *mux[3];
|
|
+ void __iomem *pad[6];
|
|
+
|
|
+ /* register access lock */
|
|
+ spinlock_t lock;
|
|
+
|
|
+ struct gpio_chip gpio[2];
|
|
+};
|
|
+
|
|
+static const struct pinctrl_pin_desc bcm6318_pins[] = {
|
|
+ PINCTRL_PIN(0, "gpio0"),
|
|
+ PINCTRL_PIN(1, "gpio1"),
|
|
+ PINCTRL_PIN(2, "gpio2"),
|
|
+ PINCTRL_PIN(3, "gpio3"),
|
|
+ PINCTRL_PIN(4, "gpio4"),
|
|
+ PINCTRL_PIN(5, "gpio5"),
|
|
+ PINCTRL_PIN(6, "gpio6"),
|
|
+ PINCTRL_PIN(7, "gpio7"),
|
|
+ PINCTRL_PIN(8, "gpio8"),
|
|
+ PINCTRL_PIN(9, "gpio9"),
|
|
+ PINCTRL_PIN(10, "gpio10"),
|
|
+ PINCTRL_PIN(11, "gpio11"),
|
|
+ PINCTRL_PIN(12, "gpio12"),
|
|
+ PINCTRL_PIN(13, "gpio13"),
|
|
+ PINCTRL_PIN(14, "gpio14"),
|
|
+ PINCTRL_PIN(15, "gpio15"),
|
|
+ PINCTRL_PIN(16, "gpio16"),
|
|
+ PINCTRL_PIN(17, "gpio17"),
|
|
+ PINCTRL_PIN(18, "gpio18"),
|
|
+ PINCTRL_PIN(19, "gpio19"),
|
|
+ PINCTRL_PIN(20, "gpio20"),
|
|
+ PINCTRL_PIN(21, "gpio21"),
|
|
+ PINCTRL_PIN(22, "gpio22"),
|
|
+ PINCTRL_PIN(23, "gpio23"),
|
|
+ PINCTRL_PIN(24, "gpio24"),
|
|
+ PINCTRL_PIN(25, "gpio25"),
|
|
+ PINCTRL_PIN(26, "gpio26"),
|
|
+ PINCTRL_PIN(27, "gpio27"),
|
|
+ PINCTRL_PIN(28, "gpio28"),
|
|
+ PINCTRL_PIN(29, "gpio29"),
|
|
+ PINCTRL_PIN(30, "gpio30"),
|
|
+ PINCTRL_PIN(31, "gpio31"),
|
|
+ PINCTRL_PIN(32, "gpio32"),
|
|
+ PINCTRL_PIN(33, "gpio33"),
|
|
+ PINCTRL_PIN(34, "gpio34"),
|
|
+ PINCTRL_PIN(35, "gpio35"),
|
|
+ PINCTRL_PIN(36, "gpio36"),
|
|
+ PINCTRL_PIN(37, "gpio37"),
|
|
+ PINCTRL_PIN(38, "gpio38"),
|
|
+ PINCTRL_PIN(39, "gpio39"),
|
|
+ PINCTRL_PIN(40, "gpio40"),
|
|
+ PINCTRL_PIN(41, "gpio41"),
|
|
+ PINCTRL_PIN(42, "gpio42"),
|
|
+ PINCTRL_PIN(43, "gpio43"),
|
|
+ PINCTRL_PIN(44, "gpio44"),
|
|
+ PINCTRL_PIN(45, "gpio45"),
|
|
+ PINCTRL_PIN(46, "gpio46"),
|
|
+ PINCTRL_PIN(47, "gpio47"),
|
|
+ PINCTRL_PIN(48, "gpio48"),
|
|
+ PINCTRL_PIN(49, "gpio49"),
|
|
+};
|
|
+
|
|
+static unsigned gpio0_pins[] = { 0 };
|
|
+static unsigned gpio1_pins[] = { 1 };
|
|
+static unsigned gpio2_pins[] = { 2 };
|
|
+static unsigned gpio3_pins[] = { 3 };
|
|
+static unsigned gpio4_pins[] = { 4 };
|
|
+static unsigned gpio5_pins[] = { 5 };
|
|
+static unsigned gpio6_pins[] = { 6 };
|
|
+static unsigned gpio7_pins[] = { 7 };
|
|
+static unsigned gpio8_pins[] = { 8 };
|
|
+static unsigned gpio9_pins[] = { 9 };
|
|
+static unsigned gpio10_pins[] = { 10 };
|
|
+static unsigned gpio11_pins[] = { 11 };
|
|
+static unsigned gpio12_pins[] = { 12 };
|
|
+static unsigned gpio13_pins[] = { 13 };
|
|
+static unsigned gpio14_pins[] = { 14 };
|
|
+static unsigned gpio15_pins[] = { 15 };
|
|
+static unsigned gpio16_pins[] = { 16 };
|
|
+static unsigned gpio17_pins[] = { 17 };
|
|
+static unsigned gpio18_pins[] = { 18 };
|
|
+static unsigned gpio19_pins[] = { 19 };
|
|
+static unsigned gpio20_pins[] = { 20 };
|
|
+static unsigned gpio21_pins[] = { 21 };
|
|
+static unsigned gpio22_pins[] = { 22 };
|
|
+static unsigned gpio23_pins[] = { 23 };
|
|
+static unsigned gpio24_pins[] = { 24 };
|
|
+static unsigned gpio25_pins[] = { 25 };
|
|
+static unsigned gpio26_pins[] = { 26 };
|
|
+static unsigned gpio27_pins[] = { 27 };
|
|
+static unsigned gpio28_pins[] = { 28 };
|
|
+static unsigned gpio29_pins[] = { 29 };
|
|
+static unsigned gpio30_pins[] = { 30 };
|
|
+static unsigned gpio31_pins[] = { 31 };
|
|
+static unsigned gpio32_pins[] = { 32 };
|
|
+static unsigned gpio33_pins[] = { 33 };
|
|
+static unsigned gpio34_pins[] = { 34 };
|
|
+static unsigned gpio35_pins[] = { 35 };
|
|
+static unsigned gpio36_pins[] = { 36 };
|
|
+static unsigned gpio37_pins[] = { 37 };
|
|
+static unsigned gpio38_pins[] = { 38 };
|
|
+static unsigned gpio39_pins[] = { 39 };
|
|
+static unsigned gpio40_pins[] = { 40 };
|
|
+static unsigned gpio41_pins[] = { 41 };
|
|
+static unsigned gpio42_pins[] = { 42 };
|
|
+static unsigned gpio43_pins[] = { 43 };
|
|
+static unsigned gpio44_pins[] = { 44 };
|
|
+static unsigned gpio45_pins[] = { 45 };
|
|
+static unsigned gpio46_pins[] = { 46 };
|
|
+static unsigned gpio47_pins[] = { 47 };
|
|
+static unsigned gpio48_pins[] = { 48 };
|
|
+static unsigned gpio49_pins[] = { 49 };
|
|
+
|
|
+#define BCM6318_GROUP(n) \
|
|
+ { \
|
|
+ .name = #n, \
|
|
+ .pins = n##_pins, \
|
|
+ .num_pins = ARRAY_SIZE(n##_pins), \
|
|
+ }
|
|
+
|
|
+static struct bcm6318_pingroup bcm6318_groups[] = {
|
|
+ BCM6318_GROUP(gpio0),
|
|
+ BCM6318_GROUP(gpio1),
|
|
+ BCM6318_GROUP(gpio2),
|
|
+ BCM6318_GROUP(gpio3),
|
|
+ BCM6318_GROUP(gpio4),
|
|
+ BCM6318_GROUP(gpio5),
|
|
+ BCM6318_GROUP(gpio6),
|
|
+ BCM6318_GROUP(gpio7),
|
|
+ BCM6318_GROUP(gpio8),
|
|
+ BCM6318_GROUP(gpio9),
|
|
+ BCM6318_GROUP(gpio10),
|
|
+ BCM6318_GROUP(gpio11),
|
|
+ BCM6318_GROUP(gpio12),
|
|
+ BCM6318_GROUP(gpio13),
|
|
+ BCM6318_GROUP(gpio14),
|
|
+ BCM6318_GROUP(gpio15),
|
|
+ BCM6318_GROUP(gpio16),
|
|
+ BCM6318_GROUP(gpio17),
|
|
+ BCM6318_GROUP(gpio18),
|
|
+ BCM6318_GROUP(gpio19),
|
|
+ BCM6318_GROUP(gpio20),
|
|
+ BCM6318_GROUP(gpio21),
|
|
+ BCM6318_GROUP(gpio22),
|
|
+ BCM6318_GROUP(gpio23),
|
|
+ BCM6318_GROUP(gpio24),
|
|
+ BCM6318_GROUP(gpio25),
|
|
+ BCM6318_GROUP(gpio26),
|
|
+ BCM6318_GROUP(gpio27),
|
|
+ BCM6318_GROUP(gpio28),
|
|
+ BCM6318_GROUP(gpio29),
|
|
+ BCM6318_GROUP(gpio30),
|
|
+ BCM6318_GROUP(gpio31),
|
|
+ BCM6318_GROUP(gpio32),
|
|
+ BCM6318_GROUP(gpio33),
|
|
+ BCM6318_GROUP(gpio34),
|
|
+ BCM6318_GROUP(gpio35),
|
|
+ BCM6318_GROUP(gpio36),
|
|
+ BCM6318_GROUP(gpio37),
|
|
+ BCM6318_GROUP(gpio38),
|
|
+ BCM6318_GROUP(gpio39),
|
|
+ BCM6318_GROUP(gpio40),
|
|
+ BCM6318_GROUP(gpio41),
|
|
+ BCM6318_GROUP(gpio42),
|
|
+ BCM6318_GROUP(gpio43),
|
|
+ BCM6318_GROUP(gpio44),
|
|
+ BCM6318_GROUP(gpio45),
|
|
+ BCM6318_GROUP(gpio46),
|
|
+ BCM6318_GROUP(gpio47),
|
|
+ BCM6318_GROUP(gpio48),
|
|
+ BCM6318_GROUP(gpio49),
|
|
+};
|
|
+
|
|
+/* GPIO_MODE */
|
|
+static const char * const led_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",
|
|
+};
|
|
+
|
|
+/* PINMUX_SEL */
|
|
+static const char * const ephy0_spd_led_groups[] = {
|
|
+ "gpio0",
|
|
+};
|
|
+
|
|
+static const char * const ephy1_spd_led_groups[] = {
|
|
+ "gpio1",
|
|
+};
|
|
+
|
|
+static const char * const ephy2_spd_led_groups[] = {
|
|
+ "gpio2",
|
|
+};
|
|
+
|
|
+static const char * const ephy3_spd_led_groups[] = {
|
|
+ "gpio3",
|
|
+};
|
|
+
|
|
+static const char * const ephy0_act_led_groups[] = {
|
|
+ "gpio4",
|
|
+};
|
|
+
|
|
+static const char * const ephy1_act_led_groups[] = {
|
|
+ "gpio5",
|
|
+};
|
|
+
|
|
+static const char * const ephy2_act_led_groups[] = {
|
|
+ "gpio6",
|
|
+};
|
|
+
|
|
+static const char * const ephy3_act_led_groups[] = {
|
|
+ "gpio7",
|
|
+};
|
|
+
|
|
+static const char * const serial_led_data_groups[] = {
|
|
+ "gpio6",
|
|
+};
|
|
+
|
|
+static const char * const serial_led_clk_groups[] = {
|
|
+ "gpio7",
|
|
+};
|
|
+
|
|
+static const char * const inet_act_led_groups[] = {
|
|
+ "gpio8",
|
|
+};
|
|
+
|
|
+static const char * const inet_fail_led_groups[] = {
|
|
+ "gpio9",
|
|
+};
|
|
+
|
|
+static const char * const dsl_led_groups[] = {
|
|
+ "gpio10",
|
|
+};
|
|
+
|
|
+static const char * const post_fail_led_groups[] = {
|
|
+ "gpio11",
|
|
+};
|
|
+
|
|
+static const char * const wlan_wps_led_groups[] = {
|
|
+ "gpio12",
|
|
+};
|
|
+
|
|
+static const char * const usb_pwron_groups[] = {
|
|
+ "gpio13",
|
|
+};
|
|
+
|
|
+static const char * const usb_device_led_groups[] = {
|
|
+ "gpio13",
|
|
+};
|
|
+
|
|
+static const char * const usb_active_groups[] = {
|
|
+ "gpio40",
|
|
+};
|
|
+
|
|
+#define BCM6318_MODE_FUN(n) \
|
|
+ { \
|
|
+ .name = #n, \
|
|
+ .groups = n##_groups, \
|
|
+ .num_groups = ARRAY_SIZE(n##_groups), \
|
|
+ .mode_val = 1, \
|
|
+ }
|
|
+
|
|
+#define BCM6318_MUX_FUN(n, mux) \
|
|
+ { \
|
|
+ .name = #n, \
|
|
+ .groups = n##_groups, \
|
|
+ .num_groups = ARRAY_SIZE(n##_groups), \
|
|
+ .mux_val = mux, \
|
|
+ }
|
|
+
|
|
+static const struct bcm6318_function bcm6318_funcs[] = {
|
|
+ BCM6318_MODE_FUN(led),
|
|
+ BCM6318_MUX_FUN(ephy0_spd_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy1_spd_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy2_spd_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy3_spd_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy0_act_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy1_act_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy2_act_led, 1),
|
|
+ BCM6318_MUX_FUN(ephy3_act_led, 1),
|
|
+ BCM6318_MUX_FUN(serial_led_data, 3),
|
|
+ BCM6318_MUX_FUN(serial_led_clk, 3),
|
|
+ BCM6318_MUX_FUN(inet_act_led, 1),
|
|
+ BCM6318_MUX_FUN(inet_fail_led, 1),
|
|
+ BCM6318_MUX_FUN(dsl_led, 1),
|
|
+ BCM6318_MUX_FUN(post_fail_led, 1),
|
|
+ BCM6318_MUX_FUN(wlan_wps_led, 1),
|
|
+ BCM6318_MUX_FUN(usb_pwron, 1),
|
|
+ BCM6318_MUX_FUN(usb_device_led, 2),
|
|
+ BCM6318_MUX_FUN(usb_active, 2),
|
|
+};
|
|
+
|
|
+static int bcm6318_pinctrl_get_group_count(struct pinctrl_dev *pctldev)
|
|
+{
|
|
+ return ARRAY_SIZE(bcm6318_groups);
|
|
+}
|
|
+
|
|
+static const char *bcm6318_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
|
|
+ unsigned group)
|
|
+{
|
|
+ return bcm6318_groups[group].name;
|
|
+}
|
|
+
|
|
+static int bcm6318_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
|
|
+ unsigned group, const unsigned **pins,
|
|
+ unsigned *num_pins)
|
|
+{
|
|
+ *pins = bcm6318_groups[group].pins;
|
|
+ *num_pins = bcm6318_groups[group].num_pins;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int bcm6318_pinctrl_get_func_count(struct pinctrl_dev *pctldev)
|
|
+{
|
|
+ return ARRAY_SIZE(bcm6318_funcs);
|
|
+}
|
|
+
|
|
+static const char *bcm6318_pinctrl_get_func_name(struct pinctrl_dev *pctldev,
|
|
+ unsigned selector)
|
|
+{
|
|
+ return bcm6318_funcs[selector].name;
|
|
+}
|
|
+
|
|
+static int bcm6318_pinctrl_get_groups(struct pinctrl_dev *pctldev,
|
|
+ unsigned selector,
|
|
+ const char * const **groups,
|
|
+ unsigned * const num_groups)
|
|
+{
|
|
+ *groups = bcm6318_funcs[selector].groups;
|
|
+ *num_groups = bcm6318_funcs[selector].num_groups;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void bcm6318_rmw_mux(struct bcm6318_pinctrl *pctl, unsigned pin,
|
|
+ u32 mode, u32 mux)
|
|
+{
|
|
+ unsigned long flags;
|
|
+ u32 reg;
|
|
+
|
|
+ spin_lock_irqsave(&pctl->lock, flags);
|
|
+ if (pin < 32) {
|
|
+ reg = __raw_readl(pctl->mode);
|
|
+ reg &= ~BIT(pin);
|
|
+ if (mode)
|
|
+ reg |= BIT(pin);
|
|
+ __raw_writel(reg, pctl->mode);
|
|
+ }
|
|
+
|
|
+ if (pin < 48) {
|
|
+ reg = __raw_readl(pctl->mux[pin / 16]);
|
|
+ reg &= ~(3UL << ((pin % 16) * 2));
|
|
+ reg |= mux << ((pin % 16) * 2);
|
|
+ __raw_writel(reg, pctl->mux[pin / 16]);
|
|
+ }
|
|
+ spin_unlock_irqrestore(&pctl->lock, flags);
|
|
+}
|
|
+
|
|
+static void bcm6318_set_pad(struct bcm6318_pinctrl *pctl, unsigned pin, u8 val)
|
|
+{
|
|
+ unsigned long flags;
|
|
+ u32 reg;
|
|
+
|
|
+ spin_lock_irqsave(&pctl->lock, flags);
|
|
+ reg = __raw_readl(pctl->pad[pin / 8]);
|
|
+ reg &= ~(0xfUL << ((pin % 8) * 4));
|
|
+ reg |= val << ((pin % 8) * 4);
|
|
+ __raw_writel(reg, pctl->pad[pin / 8]);
|
|
+ spin_unlock_irqrestore(&pctl->lock, flags);
|
|
+}
|
|
+
|
|
+static int bcm6318_pinctrl_set_mux(struct pinctrl_dev *pctldev,
|
|
+ unsigned selector, unsigned group)
|
|
+{
|
|
+ struct bcm6318_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
|
+ const struct bcm6318_pingroup *grp = &bcm6318_groups[group];
|
|
+ const struct bcm6318_function *f = &bcm6318_funcs[selector];
|
|
+
|
|
+ bcm6318_rmw_mux(pctl, grp->pins[0], f->mode_val, f->mux_val);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int bcm6318_gpio_request_enable(struct pinctrl_dev *pctldev,
|
|
+ struct pinctrl_gpio_range *range,
|
|
+ unsigned offset)
|
|
+{
|
|
+ struct bcm6318_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
|
+
|
|
+ /* disable all functions using this pin */
|
|
+ if (offset < 13) {
|
|
+ /* GPIOs 0-12 use mux 0 as GPIO function */
|
|
+ bcm6318_rmw_mux(pctl, offset, 0, 0);
|
|
+ } else if (offset < 42) {
|
|
+ /* GPIOs 13-41 use mux 3 as GPIO function */
|
|
+ bcm6318_rmw_mux(pctl, offset, 0, 3);
|
|
+
|
|
+ /* FIXME: revert to old value for non gpio? */
|
|
+ bcm6318_set_pad(pctl, offset, 0);
|
|
+ } else {
|
|
+ /* no idea, really */
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct pinctrl_ops bcm6318_pctl_ops = {
|
|
+ .get_groups_count = bcm6318_pinctrl_get_group_count,
|
|
+ .get_group_name = bcm6318_pinctrl_get_group_name,
|
|
+ .get_group_pins = bcm6318_pinctrl_get_group_pins,
|
|
+#ifdef CONFIG_OF
|
|
+ .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
|
|
+ .dt_free_map = pinctrl_utils_free_map,
|
|
+#endif
|
|
+};
|
|
+
|
|
+static struct pinmux_ops bcm6318_pmx_ops = {
|
|
+ .get_functions_count = bcm6318_pinctrl_get_func_count,
|
|
+ .get_function_name = bcm6318_pinctrl_get_func_name,
|
|
+ .get_function_groups = bcm6318_pinctrl_get_groups,
|
|
+ .set_mux = bcm6318_pinctrl_set_mux,
|
|
+ .gpio_request_enable = bcm6318_gpio_request_enable,
|
|
+ .strict = true,
|
|
+};
|
|
+
|
|
+static int bcm6318_pinctrl_probe(struct platform_device *pdev)
|
|
+{
|
|
+ struct bcm6318_pinctrl *pctl;
|
|
+ struct resource *res;
|
|
+ void __iomem *mode, *mux, *pad;
|
|
+ unsigned i;
|
|
+
|
|
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mode");
|
|
+ mode = devm_ioremap_resource(&pdev->dev, res);
|
|
+ if (IS_ERR(mode))
|
|
+ return PTR_ERR(mode);
|
|
+
|
|
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mux");
|
|
+ mux = devm_ioremap_resource(&pdev->dev, res);
|
|
+ if (IS_ERR(mux))
|
|
+ return PTR_ERR(mux);
|
|
+
|
|
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pad");
|
|
+ pad = devm_ioremap_resource(&pdev->dev, res);
|
|
+ if (IS_ERR(pad))
|
|
+ return PTR_ERR(pad);
|
|
+
|
|
+ pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
|
|
+ if (!pctl)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ spin_lock_init(&pctl->lock);
|
|
+
|
|
+ pctl->mode = mode;
|
|
+
|
|
+ for (i = 0; i < 3; i++)
|
|
+ pctl->mux[i] = mux + (i * 4);
|
|
+
|
|
+ for (i = 0; i < 6; i++)
|
|
+ pctl->pad[i] = pad + (i * 4);
|
|
+
|
|
+ pctl->desc.name = dev_name(&pdev->dev);
|
|
+ pctl->desc.owner = THIS_MODULE;
|
|
+ pctl->desc.pctlops = &bcm6318_pctl_ops;
|
|
+ pctl->desc.pmxops = &bcm6318_pmx_ops;
|
|
+
|
|
+ pctl->desc.npins = ARRAY_SIZE(bcm6318_pins);
|
|
+ pctl->desc.pins = bcm6318_pins;
|
|
+
|
|
+ platform_set_drvdata(pdev, pctl);
|
|
+
|
|
+ pctl->pctldev = bcm63xx_pinctrl_register(pdev, &pctl->desc, pctl,
|
|
+ pctl->gpio, BCM6318_NGPIO);
|
|
+ if (IS_ERR(pctl->pctldev))
|
|
+ return PTR_ERR(pctl->pctldev);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct of_device_id bcm6318_pinctrl_match[] = {
|
|
+ { .compatible = "brcm,bcm6318-pinctrl", },
|
|
+ { },
|
|
+};
|
|
+
|
|
+static struct platform_driver bcm6318_pinctrl_driver = {
|
|
+ .probe = bcm6318_pinctrl_probe,
|
|
+ .driver = {
|
|
+ .name = "bcm6318-pinctrl",
|
|
+ .of_match_table = bcm6318_pinctrl_match,
|
|
+ },
|
|
+};
|
|
+
|
|
+builtin_platform_driver(bcm6318_pinctrl_driver);
|
|
|