aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch')
-rw-r--r--target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch729
1 files changed, 729 insertions, 0 deletions
diff --git a/target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch b/target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch
new file mode 100644
index 0000000000..b57b49d35f
--- /dev/null
+++ b/target/linux/bmips/patches-5.10/411-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch
@@ -0,0 +1,729 @@
+From e1764f96eb563a11c822ff91d1c6d7ed01c3925b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
+Date: Fri, 24 Jun 2016 22:20:39 +0200
+Subject: [PATCH 12/12] pinctrl: add a pincontrol driver for BCM6318
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+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: Álvaro Fernández Rojas <noltari@gmail.com>
+Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
+---
+ drivers/pinctrl/bcm/Kconfig | 11 +
+ drivers/pinctrl/bcm/Makefile | 1 +
+ drivers/pinctrl/bcm/pinctrl-bcm6318.c | 674 ++++++++++++++++++++++++++
+ 3 files changed, 686 insertions(+)
+ create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm6318.c
+
+--- a/drivers/pinctrl/bcm/Kconfig
++++ b/drivers/pinctrl/bcm/Kconfig
+@@ -29,6 +29,17 @@ config PINCTRL_BCM2835
+ help
+ Say Y here to enable the Broadcom BCM2835 GPIO driver.
+
++config PINCTRL_BCM6318
++ bool "Broadcom BCM6318 GPIO driver"
++ depends on OF_GPIO && (BMIPS_GENERIC || COMPILE_TEST)
++ select PINMUX
++ select PINCONF
++ select GENERIC_PINCONF
++ select MFD_SYSCON
++ default BMIPS_GENERIC
++ help
++ Say Y here to enable the Broadcom BCM6318 GPIO driver.
++
+ config PINCTRL_BCM6328
+ bool "Broadcom BCM6328 GPIO driver"
+ depends on OF_GPIO && (BMIPS_GENERIC || COMPILE_TEST)
+--- a/drivers/pinctrl/bcm/Makefile
++++ b/drivers/pinctrl/bcm/Makefile
+@@ -3,6 +3,7 @@
+
+ obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o
+ obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o
++obj-$(CONFIG_PINCTRL_BCM6318) += pinctrl-bcm6318.o
+ obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl-bcm6328.o
+ obj-$(CONFIG_PINCTRL_BCM6358) += pinctrl-bcm6358.o
+ obj-$(CONFIG_PINCTRL_BCM6362) += pinctrl-bcm6362.o
+--- /dev/null
++++ b/drivers/pinctrl/bcm/pinctrl-bcm6318.c
+@@ -0,0 +1,674 @@
++// SPDX-License-Identifier: GPL-2.0+
++/*
++ * Driver for BCM6318 GPIO unit (pinctrl + GPIO)
++ *
++ * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
++ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
++ */
++
++#include <linux/bitops.h>
++#include <linux/gpio.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/of.h>
++#include <linux/of_gpio.h>
++#include <linux/of_irq.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++
++#include <linux/pinctrl/machine.h>
++#include <linux/pinctrl/pinconf.h>
++#include <linux/pinctrl/pinconf-generic.h>
++#include <linux/pinctrl/pinmux.h>
++
++#include "../core.h"
++#include "../pinctrl-utils.h"
++
++#define MODULE_NAME "bcm6318-pinctrl"
++#define BCM6318_NUM_GPIOS 50
++#define BCM6318_NUM_MUX 48
++
++#define BANK_SIZE sizeof(uint32_t)
++#define PINS_PER_BANK (BANK_SIZE * BITS_PER_BYTE)
++
++#define BCM6318_DIROUT_REG 0x04
++#define BCM6318_DATA_REG 0x0c
++#define BCM6318_MODE_REG 0x18
++#define BCM6318_MUX_REG 0x1c
++#define BCM6318_PAD_REG 0x54
++
++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 device *dev;
++ struct regmap *regs;
++
++ struct pinctrl_dev *pctl_dev;
++ struct gpio_chip gpio_chip;
++ struct pinctrl_desc pctl_desc;
++ struct pinctrl_gpio_range gpio_range;
++};
++
++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 inline unsigned int bcm6318_bank_pin(unsigned int pin)
++{
++ return pin % PINS_PER_BANK;
++}
++
++static inline unsigned int bcm6318_mux_off(unsigned int pin)
++{
++ return BCM6318_MUX_REG + (pin / 16) * BANK_SIZE;
++}
++
++static inline unsigned int bcm6318_pad_off(unsigned int pin)
++{
++ return BCM6318_PAD_REG + (pin / 8) * BANK_SIZE;
++}
++
++static inline unsigned int bcm6318_reg_off(unsigned int reg, unsigned int pin)
++{
++ return reg - (pin / PINS_PER_BANK) * BANK_SIZE;
++}
++
++static int bcm6318_gpio_direction_input(struct gpio_chip *chip,
++ unsigned int pin)
++{
++ struct bcm6318_pinctrl *pc = gpiochip_get_data(chip);
++ unsigned int dirout = bcm6318_reg_off(BCM6318_DIROUT_REG, pin);
++ unsigned int bank_pin = bcm6318_bank_pin(pin);
++ int ret;
++
++ /*
++ * Check with the pinctrl driver whether this pin is usable as
++ * an input GPIO
++ */
++ ret = pinctrl_gpio_direction_input(chip->base + pin);
++ if (ret)
++ return ret;
++
++ regmap_update_bits(pc->regs, dirout, BIT(bank_pin), 0);
++
++ return 0;
++}
++
++static int bcm6318_gpio_direction_output(struct gpio_chip *chip,
++ unsigned int pin, int value)
++{
++ struct bcm6318_pinctrl *pc = gpiochip_get_data(chip);
++ unsigned int data = bcm6318_reg_off(BCM6318_DATA_REG, pin);
++ unsigned int dirout = bcm6318_reg_off(BCM6318_DIROUT_REG, pin);
++ unsigned int bank_pin = bcm6318_bank_pin(pin);
++ unsigned int val = value ? BIT(bank_pin) : 0;
++ int ret;
++
++ /*
++ * Check with the pinctrl driver whether this pin is usable as
++ * an output GPIO
++ */
++ ret = pinctrl_gpio_direction_output(chip->base + pin);
++ if (ret)
++ return ret;
++
++ regmap_update_bits(pc->regs, dirout, BIT(bank_pin), BIT(bank_pin));
++ regmap_update_bits(pc->regs, data, BIT(bank_pin), val);
++
++ return 0;
++}
++
++static int bcm6318_gpio_get(struct gpio_chip *chip, unsigned int pin)
++{
++ struct bcm6318_pinctrl *pc = gpiochip_get_data(chip);
++ unsigned int data = bcm6318_reg_off(BCM6318_DATA_REG, pin);
++ unsigned int bank_pin = bcm6318_bank_pin(pin);
++ unsigned int val;
++
++ regmap_read(pc->regs, data, &val);
++
++ return !!(val & BIT(bank_pin));
++}
++
++static int bcm6318_gpio_get_direction(struct gpio_chip *chip, unsigned int pin)
++{
++ struct bcm6318_pinctrl *pc = gpiochip_get_data(chip);
++ unsigned int dirout = bcm6318_reg_off(BCM6318_DIROUT_REG, pin);
++ unsigned int bank_pin = bcm6318_bank_pin(pin);
++ unsigned int val;
++
++ regmap_read(pc->regs, dirout, &val);
++
++ if (val & BIT(bank_pin))
++ return GPIO_LINE_DIRECTION_OUT;
++
++ return GPIO_LINE_DIRECTION_IN;
++}
++
++static void bcm6318_gpio_set(struct gpio_chip *chip, unsigned int pin,
++ int value)
++{
++ struct bcm6318_pinctrl *pc = gpiochip_get_data(chip);
++ unsigned int data = bcm6318_reg_off(BCM6318_DATA_REG, pin);
++ unsigned int bank_pin = bcm6318_bank_pin(pin);
++ unsigned int val = value ? BIT(bank_pin) : 0;
++
++ regmap_update_bits(pc->regs, data, BIT(bank_pin), val);
++}
++
++static int bcm6318_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
++{
++ char irq_name[7];
++
++ sprintf(irq_name, "gpio%d", gpio);
++
++ return of_irq_get_byname(chip->of_node, irq_name);
++}
++
++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 inline void bcm6318_rmw_mux(struct bcm6318_pinctrl *pc, unsigned pin,
++ unsigned int mode, unsigned int mux)
++{
++ if (pin < PINS_PER_BANK)
++ regmap_update_bits(pc->regs, BCM6318_MODE_REG, BIT(pin),
++ mode ? BIT(pin) : 0);
++
++ if (pin < BCM6318_NUM_MUX)
++ regmap_update_bits(pc->regs,
++ bcm6318_mux_off(pin),
++ 3UL << ((pin % 16) * 2),
++ mux << ((pin % 16) * 2));
++}
++
++static inline void bcm6318_set_pad(struct bcm6318_pinctrl *pc, unsigned pin,
++ uint8_t val)
++{
++ regmap_update_bits(pc->regs, bcm6318_pad_off(pin),
++ 0xfUL << ((pin % 8) * 4),
++ val << ((pin % 8) * 4));
++}
++
++static int bcm6318_pinctrl_set_mux(struct pinctrl_dev *pctldev,
++ unsigned selector, unsigned group)
++{
++ struct bcm6318_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
++ const struct bcm6318_pingroup *pg = &bcm6318_groups[group];
++ const struct bcm6318_function *f = &bcm6318_funcs[selector];
++
++ bcm6318_rmw_mux(pc, pg->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 *pc = 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(pc, offset, 0, 0);
++ } else if (offset < 42) {
++ /* GPIOs 13-41 use mux 3 as GPIO function */
++ bcm6318_rmw_mux(pc, offset, 0, 3);
++
++ bcm6318_set_pad(pc, offset, 0);
++ }
++
++ 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,
++ .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
++ .dt_free_map = pinctrl_utils_free_map,
++};
++
++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 device *dev = &pdev->dev;
++ struct device_node *np = dev->of_node;
++ struct bcm6318_pinctrl *pc;
++ int err;
++
++ pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
++ if (!pc)
++ return -ENOMEM;
++
++ platform_set_drvdata(pdev, pc);
++ pc->dev = dev;
++
++ pc->regs = syscon_node_to_regmap(dev->parent->of_node);
++ if (IS_ERR(pc->regs))
++ return PTR_ERR(pc->regs);
++
++ pc->gpio_chip.label = MODULE_NAME;
++ pc->gpio_chip.owner = THIS_MODULE;
++ pc->gpio_chip.request = gpiochip_generic_request;
++ pc->gpio_chip.free = gpiochip_generic_free;
++ pc->gpio_chip.direction_input = bcm6318_gpio_direction_input;
++ pc->gpio_chip.direction_output = bcm6318_gpio_direction_output;
++ pc->gpio_chip.get_direction = bcm6318_gpio_get_direction;
++ pc->gpio_chip.get = bcm6318_gpio_get;
++ pc->gpio_chip.set = bcm6318_gpio_set;
++ pc->gpio_chip.set_config = gpiochip_generic_config;
++ pc->gpio_chip.base = -1;
++ pc->gpio_chip.ngpio = BCM6318_NUM_GPIOS;
++ pc->gpio_chip.can_sleep = false;
++ pc->gpio_chip.parent = dev;
++ pc->gpio_chip.of_node = np;
++
++ if (of_get_property(np, "interrupt-names", NULL))
++ pc->gpio_chip.to_irq = bcm6318_gpio_to_irq;
++
++ err = gpiochip_add_data(&pc->gpio_chip, pc);
++ if (err) {
++ dev_err(dev, "could not add GPIO chip\n");
++ return err;
++ }
++
++ pc->pctl_desc.name = MODULE_NAME,
++ pc->pctl_desc.pins = bcm6318_pins,
++ pc->pctl_desc.npins = ARRAY_SIZE(bcm6318_pins),
++ pc->pctl_desc.pctlops = &bcm6318_pctl_ops,
++ pc->pctl_desc.pmxops = &bcm6318_pmx_ops,
++ pc->pctl_desc.owner = THIS_MODULE,
++
++ pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc);
++ if (IS_ERR(pc->pctl_dev)) {
++ gpiochip_remove(&pc->gpio_chip);
++ return PTR_ERR(pc->pctl_dev);
++ }
++
++ pc->gpio_range.name = MODULE_NAME;
++ pc->gpio_range.npins = BCM6318_NUM_GPIOS;
++ pc->gpio_range.base = pc->gpio_chip.base;
++ pc->gpio_range.gc = &pc->gpio_chip;
++ pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range);
++
++ dev_info(dev, "registered\n");
++
++ 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 = MODULE_NAME,
++ .of_match_table = bcm6318_pinctrl_match,
++ },
++};
++
++builtin_platform_driver(bcm6318_pinctrl_driver);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 23:43:16 +0000