+++ /dev/null
-From d28039fccf948a407de69106465caa465b1dcf32 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Wed, 24 Mar 2021 09:19:23 +0100
-Subject: [PATCH 22/22] 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.
-
-Co-developed-by: Jonas Gorski <jonas.gorski@gmail.com>
-Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
-Link: https://lore.kernel.org/r/20210324081923.20379-23-noltari@gmail.com
-Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
----
- drivers/pinctrl/bcm/Kconfig | 8 +
- drivers/pinctrl/bcm/Makefile | 1 +
- drivers/pinctrl/bcm/pinctrl-bcm6318.c | 498 ++++++++++++++++++++++++++
- 3 files changed, 507 insertions(+)
- create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm6318.c
-
---- a/drivers/pinctrl/bcm/Kconfig
-+++ b/drivers/pinctrl/bcm/Kconfig
-@@ -36,6 +36,14 @@ config PINCTRL_BCM63XX
- select PINCONF
- select PINMUX
-
-+config PINCTRL_BCM6318
-+ bool "Broadcom BCM6318 GPIO driver"
-+ depends on (BMIPS_GENERIC || COMPILE_TEST)
-+ select PINCTRL_BCM63XX
-+ default BMIPS_GENERIC
-+ help
-+ Say Y here to enable the Broadcom BCM6318 GPIO driver.
-+
- config PINCTRL_BCM6328
- bool "Broadcom BCM6328 GPIO driver"
- depends on (BMIPS_GENERIC || COMPILE_TEST)
---- a/drivers/pinctrl/bcm/Makefile
-+++ b/drivers/pinctrl/bcm/Makefile
-@@ -4,6 +4,7 @@
- obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o
- obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o
- obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o
-+obj-$(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 +1,498 @@
-+// 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/bits.h>
-+#include <linux/gpio/driver.h>
-+#include <linux/kernel.h>
-+#include <linux/of.h>
-+#include <linux/pinctrl/pinmux.h>
-+#include <linux/platform_device.h>
-+#include <linux/regmap.h>
-+
-+#include "../pinctrl-utils.h"
-+
-+#include "pinctrl-bcm63xx.h"
-+
-+#define BCM6318_NUM_GPIOS 50
-+#define BCM6318_NUM_MUX 48
-+
-+#define BCM6318_MODE_REG 0x18
-+#define BCM6318_MUX_REG 0x1c
-+#define BCM6328_MUX_MASK GENMASK(1, 0)
-+#define BCM6318_PAD_REG 0x54
-+#define BCM6328_PAD_MASK GENMASK(3, 0)
-+
-+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;
-+};
-+
-+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_mux_off(unsigned int pin)
-+{
-+ return BCM6318_MUX_REG + (pin / 16) * 4;
-+}
-+
-+static inline unsigned int bcm6318_pad_off(unsigned int pin)
-+{
-+ return BCM6318_PAD_REG + (pin / 8) * 4;
-+}
-+
-+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 bcm63xx_pinctrl *pc, unsigned pin,
-+ unsigned int mode, unsigned int mux)
-+{
-+ if (pin < BCM63XX_BANK_GPIOS)
-+ 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),
-+ BCM6328_MUX_MASK << ((pin % 16) * 2),
-+ mux << ((pin % 16) * 2));
-+}
-+
-+static inline void bcm6318_set_pad(struct bcm63xx_pinctrl *pc, unsigned pin,
-+ uint8_t val)
-+{
-+ regmap_update_bits(pc->regs, bcm6318_pad_off(pin),
-+ BCM6328_PAD_MASK << ((pin % 8) * 4),
-+ val << ((pin % 8) * 4));
-+}
-+
-+static int bcm6318_pinctrl_set_mux(struct pinctrl_dev *pctldev,
-+ unsigned selector, unsigned group)
-+{
-+ struct bcm63xx_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 bcm63xx_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 = {
-+ .dt_free_map = pinctrl_utils_free_map,
-+ .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
-+ .get_group_name = bcm6318_pinctrl_get_group_name,
-+ .get_group_pins = bcm6318_pinctrl_get_group_pins,
-+ .get_groups_count = bcm6318_pinctrl_get_group_count,
-+};
-+
-+static struct pinmux_ops bcm6318_pmx_ops = {
-+ .get_function_groups = bcm6318_pinctrl_get_groups,
-+ .get_function_name = bcm6318_pinctrl_get_func_name,
-+ .get_functions_count = bcm6318_pinctrl_get_func_count,
-+ .gpio_request_enable = bcm6318_gpio_request_enable,
-+ .set_mux = bcm6318_pinctrl_set_mux,
-+ .strict = true,
-+};
-+
-+static const struct bcm63xx_pinctrl_soc bcm6318_soc = {
-+ .ngpios = BCM6318_NUM_GPIOS,
-+ .npins = ARRAY_SIZE(bcm6318_pins),
-+ .pctl_ops = &bcm6318_pctl_ops,
-+ .pins = bcm6318_pins,
-+ .pmx_ops = &bcm6318_pmx_ops,
-+};
-+
-+static int bcm6318_pinctrl_probe(struct platform_device *pdev)
-+{
-+ return bcm63xx_pinctrl_probe(pdev, &bcm6318_soc, NULL);
-+}
-+
-+static const struct of_device_id bcm6318_pinctrl_match[] = {
-+ { .compatible = "brcm,bcm6318-pinctrl", },
-+ { /* sentinel */ }
-+};
-+
-+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);
projects / openwrt / staging / ldir.git / blobdiff