/* * Pinctrl driver for NXP LPC18xx/LPC43xx System Control Unit (SCU) * * Copyright (C) 2015 Joachim Eastwood <[email protected]> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/bitops.h> #include <linux/clk.h> #include <linux/init.h> #include <linux/io.h> #include <linux/mod_devicetable.h> #include <linux/platform_device.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include "core.h" #include "pinctrl-utils.h" /* LPC18XX SCU analog function registers */ #define LPC18XX_SCU_REG_ENAIO0 … #define LPC18XX_SCU_REG_ENAIO1 … #define LPC18XX_SCU_REG_ENAIO2 … #define LPC18XX_SCU_REG_ENAIO2_DAC … /* LPC18XX SCU pin register definitions */ #define LPC18XX_SCU_PIN_MODE_MASK … #define LPC18XX_SCU_PIN_EPD … #define LPC18XX_SCU_PIN_EPUN … #define LPC18XX_SCU_PIN_EHS … #define LPC18XX_SCU_PIN_EZI … #define LPC18XX_SCU_PIN_ZIF … #define LPC18XX_SCU_PIN_EHD_MASK … #define LPC18XX_SCU_PIN_EHD_POS … #define LPC18XX_SCU_USB1_EPD … #define LPC18XX_SCU_USB1_EPWR … #define LPC18XX_SCU_I2C0_EFP … #define LPC18XX_SCU_I2C0_EHD … #define LPC18XX_SCU_I2C0_EZI … #define LPC18XX_SCU_I2C0_ZIF … #define LPC18XX_SCU_I2C0_SCL_SHIFT … #define LPC18XX_SCU_I2C0_SDA_SHIFT … #define LPC18XX_SCU_FUNC_PER_PIN … /* LPC18XX SCU pin interrupt select registers */ #define LPC18XX_SCU_PINTSEL0 … #define LPC18XX_SCU_PINTSEL1 … #define LPC18XX_SCU_PINTSEL_VAL_MASK … #define LPC18XX_SCU_PINTSEL_PORT_SHIFT … #define LPC18XX_SCU_IRQ_PER_PINTSEL … #define LPC18XX_GPIO_PINS_PER_PORT … #define LPC18XX_GPIO_PIN_INT_MAX … #define LPC18XX_SCU_PINTSEL_VAL(val, n) … /* LPC18xx pin types */ enum { … }; /* LPC18xx pin functions */ enum { … }; static const char *const lpc18xx_function_names[] = …; struct lpc18xx_pmx_func { … }; struct lpc18xx_scu_data { … }; struct lpc18xx_pin_caps { … }; /* Analog pins are required to have both bias and input disabled */ #define LPC18XX_SCU_ANALOG_PIN_CFG … /* Macros to maniupluate analog member in lpc18xx_pin_caps */ #define LPC18XX_ANALOG_PIN … #define LPC18XX_ANALOG_ADC(a) … #define LPC18XX_ANALOG_BIT_MASK … #define ADC0 … #define ADC1 … #define DAC … #define LPC_P(port, pin, f0, f1, f2, f3, f4, f5, f6, f7, a, t) … #define LPC_N(pname, off, f0, f1, f2, f3, f4, f5, f6, f7, a, t) … /* Pinmuxing table taken from data sheet */ /* Pin FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); LPC_P(…); /* Pin Offset FUNC0 FUNC1 FUNC2 FUNC3 FUNC4 FUNC5 FUNC6 FUNC7 ANALOG TYPE */ LPC_N(…); LPC_N(…); LPC_N(…); LPC_N(…); LPC_N(…); LPC_N(…); LPC_N(…); LPC_N(…); #define LPC18XX_PIN_P(port, pin) … /* Pin numbers for special pins */ enum { … }; #define LPC18XX_PIN(pname, n) … static const struct pinctrl_pin_desc lpc18xx_pins[] = …; /* PIN_CONFIG_GPIO_PIN_INT: route gpio to the gpio pin interrupt controller */ #define PIN_CONFIG_GPIO_PIN_INT … static const struct pinconf_generic_params lpc18xx_params[] = …; #ifdef CONFIG_DEBUG_FS static const struct pin_config_item lpc18xx_conf_items[ARRAY_SIZE(lpc18xx_params)] = …; #endif static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg) { … } static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg, unsigned pin) { … } static int lpc18xx_pin_to_gpio(struct pinctrl_dev *pctldev, unsigned pin) { … } static int lpc18xx_get_pintsel(void __iomem *addr, u32 val, int *arg) { … } static u32 lpc18xx_gpio_to_pintsel_val(int gpio) { … } static int lpc18xx_pconf_get_gpio_pin_int(struct pinctrl_dev *pctldev, int *arg, unsigned pin) { … } static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param, int *arg, u32 reg, unsigned pin, struct lpc18xx_pin_caps *pin_cap) { … } static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin) { … } static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config) { … } static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev, enum pin_config_param param, u32 param_val, u32 *reg) { … } static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev, enum pin_config_param param, u32 param_val, u32 *reg, unsigned pin) { … } static int lpc18xx_pconf_set_gpio_pin_int(struct pinctrl_dev *pctldev, u32 param_val, unsigned pin) { … } static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param, u32 param_val, u32 *reg, unsigned pin, struct lpc18xx_pin_caps *pin_cap) { … } static int lpc18xx_pconf_set(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs) { … } static const struct pinconf_ops lpc18xx_pconf_ops = …; static int lpc18xx_pmx_get_funcs_count(struct pinctrl_dev *pctldev) { … } static const char *lpc18xx_pmx_get_func_name(struct pinctrl_dev *pctldev, unsigned function) { … } static int lpc18xx_pmx_get_func_groups(struct pinctrl_dev *pctldev, unsigned function, const char *const **groups, unsigned *const num_groups) { … } static int lpc18xx_pmx_set(struct pinctrl_dev *pctldev, unsigned function, unsigned group) { … } static const struct pinmux_ops lpc18xx_pmx_ops = …; static int lpc18xx_pctl_get_groups_count(struct pinctrl_dev *pctldev) { … } static const char *lpc18xx_pctl_get_group_name(struct pinctrl_dev *pctldev, unsigned group) { … } static int lpc18xx_pctl_get_group_pins(struct pinctrl_dev *pctldev, unsigned group, const unsigned **pins, unsigned *num_pins) { … } static const struct pinctrl_ops lpc18xx_pctl_ops = …; static struct pinctrl_desc lpc18xx_scu_desc = …; static bool lpc18xx_valid_pin_function(unsigned pin, unsigned function) { … } static int lpc18xx_create_group_func_map(struct device *dev, struct lpc18xx_scu_data *scu) { … } static int lpc18xx_scu_probe(struct platform_device *pdev) { … } static const struct of_device_id lpc18xx_scu_match[] = …; static struct platform_driver lpc18xx_scu_driver = …; builtin_platform_driver(…) …;
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