tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
pinctrl: bcm: add driver for BCM4908 pinmux
BCM4908 has its own pins layout so it needs a custom binding and a Linux
driver.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220124102243.14912-2-zajec5@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
authored by
Rafał Miłecki
and committed by
Linus Walleij
f7e322d9
7b5730f0
+579
+1
MAINTAINERS
+1
MAINTAINERS
···
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L: linux-gpio@vger.kernel.org
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S: Maintained
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F: Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
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F: drivers/pinctrl/bcm/pinctrl-bcm4908.c
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BROADCOM BCM5301X ARM ARCHITECTURE
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M: Florian Fainelli <f.fainelli@gmail.com>
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drivers/pinctrl/bcm/Kconfig
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drivers/pinctrl/bcm/Kconfig
···
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help
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Say Y here to enable the Broadcom BCM2835 GPIO driver.
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config PINCTRL_BCM4908
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tristate "Broadcom BCM4908 pinmux driver"
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depends on OF && (ARCH_BCM4908 || COMPILE_TEST)
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select PINMUX
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select PINCONF
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select GENERIC_PINCONF
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select GENERIC_PINCTRL_GROUPS
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select GENERIC_PINMUX_FUNCTIONS
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default ARCH_BCM4908
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help
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Driver for BCM4908 family SoCs with integrated pin controller.
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If compiled as module it will be called pinctrl-bcm4908.
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config PINCTRL_BCM63XX
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bool
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select PINMUX
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drivers/pinctrl/bcm/Makefile
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drivers/pinctrl/bcm/Makefile
···
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obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o
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obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o
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obj-$(CONFIG_PINCTRL_BCM4908) += pinctrl-bcm4908.o
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obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o
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obj-$(CONFIG_PINCTRL_BCM6318) += pinctrl-bcm6318.o
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obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl-bcm6328.o
+563
drivers/pinctrl/bcm/pinctrl-bcm4908.c
+563
drivers/pinctrl/bcm/pinctrl-bcm4908.c
···
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> */
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/pinctrl/pinconf-generic.h>
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinmux.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/string_helpers.h>
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#include "../core.h"
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#include "../pinmux.h"
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+
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#define BCM4908_NUM_PINS 86
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+
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#define BCM4908_TEST_PORT_BLOCK_EN_LSB 0x00
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#define BCM4908_TEST_PORT_BLOCK_DATA_MSB 0x04
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#define BCM4908_TEST_PORT_BLOCK_DATA_LSB 0x08
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#define BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT 12
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#define BCM4908_TEST_PORT_COMMAND 0x0c
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#define BCM4908_TEST_PORT_CMD_LOAD_MUX_REG 0x00000021
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struct bcm4908_pinctrl {
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struct device *dev;
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void __iomem *base;
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struct mutex mutex;
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struct pinctrl_dev *pctldev;
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struct pinctrl_desc pctldesc;
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};
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/*
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* Groups
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*/
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struct bcm4908_pinctrl_pin_setup {
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unsigned int number;
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unsigned int function;
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};
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static const struct bcm4908_pinctrl_pin_setup led_0_pins_a[] = {
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{ 0, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_1_pins_a[] = {
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{ 1, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_2_pins_a[] = {
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{ 2, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_3_pins_a[] = {
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{ 3, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_4_pins_a[] = {
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{ 4, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_5_pins_a[] = {
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{ 5, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_6_pins_a[] = {
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{ 6, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_7_pins_a[] = {
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{ 7, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_8_pins_a[] = {
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{ 8, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_9_pins_a[] = {
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{ 9, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_10_pins_a[] = {
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{ 10, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_11_pins_a[] = {
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{ 11, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_12_pins_a[] = {
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{ 12, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_13_pins_a[] = {
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{ 13, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_14_pins_a[] = {
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{ 14, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_15_pins_a[] = {
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{ 15, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_16_pins_a[] = {
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{ 16, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_17_pins_a[] = {
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{ 17, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_18_pins_a[] = {
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{ 18, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_19_pins_a[] = {
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{ 19, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_20_pins_a[] = {
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{ 20, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_21_pins_a[] = {
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{ 21, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_22_pins_a[] = {
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{ 22, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_23_pins_a[] = {
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{ 23, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_24_pins_a[] = {
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{ 24, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_25_pins_a[] = {
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{ 25, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_26_pins_a[] = {
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{ 26, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_27_pins_a[] = {
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{ 27, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_28_pins_a[] = {
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{ 28, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_29_pins_a[] = {
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{ 29, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_30_pins_a[] = {
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{ 30, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_31_pins_a[] = {
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{ 31, 3 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_10_pins_b[] = {
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{ 8, 2 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_11_pins_b[] = {
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{ 9, 2 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_12_pins_b[] = {
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{ 0, 2 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_13_pins_b[] = {
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{ 1, 2 },
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};
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static const struct bcm4908_pinctrl_pin_setup led_31_pins_b[] = {
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{ 30, 2 },
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};
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static const struct bcm4908_pinctrl_pin_setup hs_uart_pins[] = {
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{ 10, 0 }, /* CTS */
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{ 11, 0 }, /* RTS */
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{ 12, 0 }, /* RXD */
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{ 13, 0 }, /* TXD */
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};
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static const struct bcm4908_pinctrl_pin_setup i2c_pins_a[] = {
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{ 18, 0 }, /* SDA */
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{ 19, 0 }, /* SCL */
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};
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static const struct bcm4908_pinctrl_pin_setup i2c_pins_b[] = {
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{ 22, 0 }, /* SDA */
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{ 23, 0 }, /* SCL */
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};
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static const struct bcm4908_pinctrl_pin_setup i2s_pins[] = {
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{ 27, 0 }, /* MCLK */
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{ 28, 0 }, /* LRCK */
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{ 29, 0 }, /* SDATA */
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{ 30, 0 }, /* SCLK */
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};
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static const struct bcm4908_pinctrl_pin_setup nand_ctrl_pins[] = {
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{ 32, 0 },
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{ 33, 0 },
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{ 34, 0 },
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{ 43, 0 },
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{ 44, 0 },
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{ 45, 0 },
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{ 56, 1 },
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};
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static const struct bcm4908_pinctrl_pin_setup nand_data_pins[] = {
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{ 35, 0 },
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{ 36, 0 },
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{ 37, 0 },
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{ 38, 0 },
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{ 39, 0 },
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{ 40, 0 },
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{ 41, 0 },
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{ 42, 0 },
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};
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static const struct bcm4908_pinctrl_pin_setup emmc_ctrl_pins[] = {
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{ 46, 0 },
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{ 47, 0 },
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};
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static const struct bcm4908_pinctrl_pin_setup usb0_pwr_pins[] = {
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{ 63, 0 },
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{ 64, 0 },
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};
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static const struct bcm4908_pinctrl_pin_setup usb1_pwr_pins[] = {
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{ 66, 0 },
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{ 67, 0 },
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};
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struct bcm4908_pinctrl_grp {
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const char *name;
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const struct bcm4908_pinctrl_pin_setup *pins;
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const unsigned int num_pins;
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};
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static const struct bcm4908_pinctrl_grp bcm4908_pinctrl_grps[] = {
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{ "led_0_grp_a", led_0_pins_a, ARRAY_SIZE(led_0_pins_a) },
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{ "led_1_grp_a", led_1_pins_a, ARRAY_SIZE(led_1_pins_a) },
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{ "led_2_grp_a", led_2_pins_a, ARRAY_SIZE(led_2_pins_a) },
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{ "led_3_grp_a", led_3_pins_a, ARRAY_SIZE(led_3_pins_a) },
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{ "led_4_grp_a", led_4_pins_a, ARRAY_SIZE(led_4_pins_a) },
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{ "led_5_grp_a", led_5_pins_a, ARRAY_SIZE(led_5_pins_a) },
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{ "led_6_grp_a", led_6_pins_a, ARRAY_SIZE(led_6_pins_a) },
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{ "led_7_grp_a", led_7_pins_a, ARRAY_SIZE(led_7_pins_a) },
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{ "led_8_grp_a", led_8_pins_a, ARRAY_SIZE(led_8_pins_a) },
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{ "led_9_grp_a", led_9_pins_a, ARRAY_SIZE(led_9_pins_a) },
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{ "led_10_grp_a", led_10_pins_a, ARRAY_SIZE(led_10_pins_a) },
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{ "led_11_grp_a", led_11_pins_a, ARRAY_SIZE(led_11_pins_a) },
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{ "led_12_grp_a", led_12_pins_a, ARRAY_SIZE(led_12_pins_a) },
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{ "led_13_grp_a", led_13_pins_a, ARRAY_SIZE(led_13_pins_a) },
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{ "led_14_grp_a", led_14_pins_a, ARRAY_SIZE(led_14_pins_a) },
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{ "led_15_grp_a", led_15_pins_a, ARRAY_SIZE(led_15_pins_a) },
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{ "led_16_grp_a", led_16_pins_a, ARRAY_SIZE(led_16_pins_a) },
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{ "led_17_grp_a", led_17_pins_a, ARRAY_SIZE(led_17_pins_a) },
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{ "led_18_grp_a", led_18_pins_a, ARRAY_SIZE(led_18_pins_a) },
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{ "led_19_grp_a", led_19_pins_a, ARRAY_SIZE(led_19_pins_a) },
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{ "led_20_grp_a", led_20_pins_a, ARRAY_SIZE(led_20_pins_a) },
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{ "led_21_grp_a", led_21_pins_a, ARRAY_SIZE(led_21_pins_a) },
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{ "led_22_grp_a", led_22_pins_a, ARRAY_SIZE(led_22_pins_a) },
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{ "led_23_grp_a", led_23_pins_a, ARRAY_SIZE(led_23_pins_a) },
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{ "led_24_grp_a", led_24_pins_a, ARRAY_SIZE(led_24_pins_a) },
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{ "led_25_grp_a", led_25_pins_a, ARRAY_SIZE(led_25_pins_a) },
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{ "led_26_grp_a", led_26_pins_a, ARRAY_SIZE(led_26_pins_a) },
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{ "led_27_grp_a", led_27_pins_a, ARRAY_SIZE(led_27_pins_a) },
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{ "led_28_grp_a", led_28_pins_a, ARRAY_SIZE(led_28_pins_a) },
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{ "led_29_grp_a", led_29_pins_a, ARRAY_SIZE(led_29_pins_a) },
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{ "led_30_grp_a", led_30_pins_a, ARRAY_SIZE(led_30_pins_a) },
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{ "led_31_grp_a", led_31_pins_a, ARRAY_SIZE(led_31_pins_a) },
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{ "led_10_grp_b", led_10_pins_b, ARRAY_SIZE(led_10_pins_b) },
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{ "led_11_grp_b", led_11_pins_b, ARRAY_SIZE(led_11_pins_b) },
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{ "led_12_grp_b", led_12_pins_b, ARRAY_SIZE(led_12_pins_b) },
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{ "led_13_grp_b", led_13_pins_b, ARRAY_SIZE(led_13_pins_b) },
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{ "led_31_grp_b", led_31_pins_b, ARRAY_SIZE(led_31_pins_b) },
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{ "hs_uart_grp", hs_uart_pins, ARRAY_SIZE(hs_uart_pins) },
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{ "i2c_grp_a", i2c_pins_a, ARRAY_SIZE(i2c_pins_a) },
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{ "i2c_grp_b", i2c_pins_b, ARRAY_SIZE(i2c_pins_b) },
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{ "i2s_grp", i2s_pins, ARRAY_SIZE(i2s_pins) },
300
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{ "nand_ctrl_grp", nand_ctrl_pins, ARRAY_SIZE(nand_ctrl_pins) },
301
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{ "nand_data_grp", nand_data_pins, ARRAY_SIZE(nand_data_pins) },
302
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{ "emmc_ctrl_grp", emmc_ctrl_pins, ARRAY_SIZE(emmc_ctrl_pins) },
303
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{ "usb0_pwr_grp", usb0_pwr_pins, ARRAY_SIZE(usb0_pwr_pins) },
304
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{ "usb1_pwr_grp", usb1_pwr_pins, ARRAY_SIZE(usb1_pwr_pins) },
305
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};
306
+
307
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/*
308
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* Functions
309
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*/
310
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311
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struct bcm4908_pinctrl_function {
312
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const char *name;
313
+
const char * const *groups;
314
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const unsigned int num_groups;
315
+
};
316
+
317
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static const char * const led_0_groups[] = { "led_0_grp_a" };
318
+
static const char * const led_1_groups[] = { "led_1_grp_a" };
319
+
static const char * const led_2_groups[] = { "led_2_grp_a" };
320
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static const char * const led_3_groups[] = { "led_3_grp_a" };
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static const char * const led_4_groups[] = { "led_4_grp_a" };
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static const char * const led_5_groups[] = { "led_5_grp_a" };
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static const char * const led_6_groups[] = { "led_6_grp_a" };
324
+
static const char * const led_7_groups[] = { "led_7_grp_a" };
325
+
static const char * const led_8_groups[] = { "led_8_grp_a" };
326
+
static const char * const led_9_groups[] = { "led_9_grp_a" };
327
+
static const char * const led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" };
328
+
static const char * const led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" };
329
+
static const char * const led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" };
330
+
static const char * const led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" };
331
+
static const char * const led_14_groups[] = { "led_14_grp_a" };
332
+
static const char * const led_15_groups[] = { "led_15_grp_a" };
333
+
static const char * const led_16_groups[] = { "led_16_grp_a" };
334
+
static const char * const led_17_groups[] = { "led_17_grp_a" };
335
+
static const char * const led_18_groups[] = { "led_18_grp_a" };
336
+
static const char * const led_19_groups[] = { "led_19_grp_a" };
337
+
static const char * const led_20_groups[] = { "led_20_grp_a" };
338
+
static const char * const led_21_groups[] = { "led_21_grp_a" };
339
+
static const char * const led_22_groups[] = { "led_22_grp_a" };
340
+
static const char * const led_23_groups[] = { "led_23_grp_a" };
341
+
static const char * const led_24_groups[] = { "led_24_grp_a" };
342
+
static const char * const led_25_groups[] = { "led_25_grp_a" };
343
+
static const char * const led_26_groups[] = { "led_26_grp_a" };
344
+
static const char * const led_27_groups[] = { "led_27_grp_a" };
345
+
static const char * const led_28_groups[] = { "led_28_grp_a" };
346
+
static const char * const led_29_groups[] = { "led_29_grp_a" };
347
+
static const char * const led_30_groups[] = { "led_30_grp_a" };
348
+
static const char * const led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" };
349
+
static const char * const hs_uart_groups[] = { "hs_uart_grp" };
350
+
static const char * const i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" };
351
+
static const char * const i2s_groups[] = { "i2s_grp" };
352
+
static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" };
353
+
static const char * const nand_data_groups[] = { "nand_data_grp" };
354
+
static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" };
355
+
static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" };
356
+
static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" };
357
+
358
+
static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = {
359
+
{ "led_0", led_0_groups, ARRAY_SIZE(led_0_groups) },
360
+
{ "led_1", led_1_groups, ARRAY_SIZE(led_1_groups) },
361
+
{ "led_2", led_2_groups, ARRAY_SIZE(led_2_groups) },
362
+
{ "led_3", led_3_groups, ARRAY_SIZE(led_3_groups) },
363
+
{ "led_4", led_4_groups, ARRAY_SIZE(led_4_groups) },
364
+
{ "led_5", led_5_groups, ARRAY_SIZE(led_5_groups) },
365
+
{ "led_6", led_6_groups, ARRAY_SIZE(led_6_groups) },
366
+
{ "led_7", led_7_groups, ARRAY_SIZE(led_7_groups) },
367
+
{ "led_8", led_8_groups, ARRAY_SIZE(led_8_groups) },
368
+
{ "led_9", led_9_groups, ARRAY_SIZE(led_9_groups) },
369
+
{ "led_10", led_10_groups, ARRAY_SIZE(led_10_groups) },
370
+
{ "led_11", led_11_groups, ARRAY_SIZE(led_11_groups) },
371
+
{ "led_12", led_12_groups, ARRAY_SIZE(led_12_groups) },
372
+
{ "led_13", led_13_groups, ARRAY_SIZE(led_13_groups) },
373
+
{ "led_14", led_14_groups, ARRAY_SIZE(led_14_groups) },
374
+
{ "led_15", led_15_groups, ARRAY_SIZE(led_15_groups) },
375
+
{ "led_16", led_16_groups, ARRAY_SIZE(led_16_groups) },
376
+
{ "led_17", led_17_groups, ARRAY_SIZE(led_17_groups) },
377
+
{ "led_18", led_18_groups, ARRAY_SIZE(led_18_groups) },
378
+
{ "led_19", led_19_groups, ARRAY_SIZE(led_19_groups) },
379
+
{ "led_20", led_20_groups, ARRAY_SIZE(led_20_groups) },
380
+
{ "led_21", led_21_groups, ARRAY_SIZE(led_21_groups) },
381
+
{ "led_22", led_22_groups, ARRAY_SIZE(led_22_groups) },
382
+
{ "led_23", led_23_groups, ARRAY_SIZE(led_23_groups) },
383
+
{ "led_24", led_24_groups, ARRAY_SIZE(led_24_groups) },
384
+
{ "led_25", led_25_groups, ARRAY_SIZE(led_25_groups) },
385
+
{ "led_26", led_26_groups, ARRAY_SIZE(led_26_groups) },
386
+
{ "led_27", led_27_groups, ARRAY_SIZE(led_27_groups) },
387
+
{ "led_28", led_28_groups, ARRAY_SIZE(led_28_groups) },
388
+
{ "led_29", led_29_groups, ARRAY_SIZE(led_29_groups) },
389
+
{ "led_30", led_30_groups, ARRAY_SIZE(led_30_groups) },
390
+
{ "led_31", led_31_groups, ARRAY_SIZE(led_31_groups) },
391
+
{ "hs_uart", hs_uart_groups, ARRAY_SIZE(hs_uart_groups) },
392
+
{ "i2c", i2c_groups, ARRAY_SIZE(i2c_groups) },
393
+
{ "i2s", i2s_groups, ARRAY_SIZE(i2s_groups) },
394
+
{ "nand_ctrl", nand_ctrl_groups, ARRAY_SIZE(nand_ctrl_groups) },
395
+
{ "nand_data", nand_data_groups, ARRAY_SIZE(nand_data_groups) },
396
+
{ "emmc_ctrl", emmc_ctrl_groups, ARRAY_SIZE(emmc_ctrl_groups) },
397
+
{ "usb0_pwr", usb0_pwr_groups, ARRAY_SIZE(usb0_pwr_groups) },
398
+
{ "usb1_pwr", usb1_pwr_groups, ARRAY_SIZE(usb1_pwr_groups) },
399
+
};
400
+
401
+
/*
402
+
* Groups code
403
+
*/
404
+
405
+
static const struct pinctrl_ops bcm4908_pinctrl_ops = {
406
+
.get_groups_count = pinctrl_generic_get_group_count,
407
+
.get_group_name = pinctrl_generic_get_group_name,
408
+
.get_group_pins = pinctrl_generic_get_group_pins,
409
+
.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
410
+
.dt_free_map = pinconf_generic_dt_free_map,
411
+
};
412
+
413
+
/*
414
+
* Functions code
415
+
*/
416
+
417
+
static int bcm4908_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev,
418
+
unsigned int func_selector,
419
+
unsigned int group_selector)
420
+
{
421
+
struct bcm4908_pinctrl *bcm4908_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev);
422
+
const struct bcm4908_pinctrl_grp *group;
423
+
struct group_desc *group_desc;
424
+
int i;
425
+
426
+
group_desc = pinctrl_generic_get_group(pctrl_dev, group_selector);
427
+
if (!group_desc)
428
+
return -EINVAL;
429
+
group = group_desc->data;
430
+
431
+
mutex_lock(&bcm4908_pinctrl->mutex);
432
+
for (i = 0; i < group->num_pins; i++) {
433
+
u32 lsb = 0;
434
+
435
+
lsb |= group->pins[i].number;
436
+
lsb |= group->pins[i].function << BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT;
437
+
438
+
writel(0x0, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_MSB);
439
+
writel(lsb, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_LSB);
440
+
writel(BCM4908_TEST_PORT_CMD_LOAD_MUX_REG,
441
+
bcm4908_pinctrl->base + BCM4908_TEST_PORT_COMMAND);
442
+
}
443
+
mutex_unlock(&bcm4908_pinctrl->mutex);
444
+
445
+
return 0;
446
+
}
447
+
448
+
static const struct pinmux_ops bcm4908_pinctrl_pmxops = {
449
+
.get_functions_count = pinmux_generic_get_function_count,
450
+
.get_function_name = pinmux_generic_get_function_name,
451
+
.get_function_groups = pinmux_generic_get_function_groups,
452
+
.set_mux = bcm4908_pinctrl_set_mux,
453
+
};
454
+
455
+
/*
456
+
* Controller code
457
+
*/
458
+
459
+
static struct pinctrl_desc bcm4908_pinctrl_desc = {
460
+
.name = "bcm4908-pinctrl",
461
+
.pctlops = &bcm4908_pinctrl_ops,
462
+
.pmxops = &bcm4908_pinctrl_pmxops,
463
+
};
464
+
465
+
static const struct of_device_id bcm4908_pinctrl_of_match_table[] = {
466
+
{ .compatible = "brcm,bcm4908-pinctrl", },
467
+
{ }
468
+
};
469
+
470
+
static int bcm4908_pinctrl_probe(struct platform_device *pdev)
471
+
{
472
+
struct device *dev = &pdev->dev;
473
+
struct bcm4908_pinctrl *bcm4908_pinctrl;
474
+
struct pinctrl_desc *pctldesc;
475
+
struct pinctrl_pin_desc *pins;
476
+
char **pin_names;
477
+
int i;
478
+
479
+
bcm4908_pinctrl = devm_kzalloc(dev, sizeof(*bcm4908_pinctrl), GFP_KERNEL);
480
+
if (!bcm4908_pinctrl)
481
+
return -ENOMEM;
482
+
pctldesc = &bcm4908_pinctrl->pctldesc;
483
+
platform_set_drvdata(pdev, bcm4908_pinctrl);
484
+
485
+
/* Set basic properties */
486
+
487
+
bcm4908_pinctrl->dev = dev;
488
+
489
+
bcm4908_pinctrl->base = devm_platform_ioremap_resource(pdev, 0);
490
+
if (IS_ERR(bcm4908_pinctrl->base))
491
+
return PTR_ERR(bcm4908_pinctrl->base);
492
+
493
+
mutex_init(&bcm4908_pinctrl->mutex);
494
+
495
+
memcpy(pctldesc, &bcm4908_pinctrl_desc, sizeof(*pctldesc));
496
+
497
+
/* Set pinctrl properties */
498
+
499
+
pin_names = devm_kasprintf_strarray(dev, "pin", BCM4908_NUM_PINS);
500
+
if (IS_ERR(pin_names))
501
+
return PTR_ERR(pin_names);
502
+
503
+
pins = devm_kcalloc(dev, BCM4908_NUM_PINS, sizeof(*pins), GFP_KERNEL);
504
+
if (!pins)
505
+
return -ENOMEM;
506
+
for (i = 0; i < BCM4908_NUM_PINS; i++) {
507
+
pins[i].number = i;
508
+
pins[i].name = pin_names[i];
509
+
}
510
+
pctldesc->pins = pins;
511
+
pctldesc->npins = BCM4908_NUM_PINS;
512
+
513
+
/* Register */
514
+
515
+
bcm4908_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, bcm4908_pinctrl);
516
+
if (IS_ERR(bcm4908_pinctrl->pctldev))
517
+
return dev_err_probe(dev, PTR_ERR(bcm4908_pinctrl->pctldev),
518
+
"Failed to register pinctrl\n");
519
+
520
+
/* Groups */
521
+
522
+
for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_grps); i++) {
523
+
const struct bcm4908_pinctrl_grp *group = &bcm4908_pinctrl_grps[i];
524
+
int *pins;
525
+
int j;
526
+
527
+
pins = devm_kcalloc(dev, group->num_pins, sizeof(*pins), GFP_KERNEL);
528
+
if (!pins)
529
+
return -ENOMEM;
530
+
for (j = 0; j < group->num_pins; j++)
531
+
pins[j] = group->pins[j].number;
532
+
533
+
pinctrl_generic_add_group(bcm4908_pinctrl->pctldev, group->name,
534
+
pins, group->num_pins, (void *)group);
535
+
}
536
+
537
+
/* Functions */
538
+
539
+
for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_functions); i++) {
540
+
const struct bcm4908_pinctrl_function *function = &bcm4908_pinctrl_functions[i];
541
+
542
+
pinmux_generic_add_function(bcm4908_pinctrl->pctldev,
543
+
function->name,
544
+
function->groups,
545
+
function->num_groups, NULL);
546
+
}
547
+
548
+
return 0;
549
+
}
550
+
551
+
static struct platform_driver bcm4908_pinctrl_driver = {
552
+
.probe = bcm4908_pinctrl_probe,
553
+
.driver = {
554
+
.name = "bcm4908-pinctrl",
555
+
.of_match_table = bcm4908_pinctrl_of_match_table,
556
+
},
557
+
};
558
+
559
+
module_platform_driver(bcm4908_pinctrl_driver);
560
+
561
+
MODULE_AUTHOR("Rafał Miłecki");
562
+
MODULE_LICENSE("GPL v2");
563
+
MODULE_DEVICE_TABLE(of, bcm4908_pinctrl_of_match_table);