// SPDX-License-Identifier: GPL-2.0-only // Copyright (C) 2014-2017 Broadcom /* * Broadcom Cygnus IOMUX driver * * This file contains the Cygnus IOMUX driver that supports group based PINMUX * configuration. Although PINMUX configuration is mainly group based, the * Cygnus IOMUX controller allows certain pins to be individually muxed to GPIO * function, and therefore be controlled by the Cygnus ASIU GPIO controller */ #include <linux/err.h> #include <linux/io.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/seq_file.h> #include <linux/slab.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" #define CYGNUS_NUM_IOMUX_REGS … #define CYGNUS_NUM_MUX_PER_REG … #define CYGNUS_NUM_IOMUX … /* * Cygnus IOMUX register description * * @offset: register offset for mux configuration of a group * @shift: bit shift for mux configuration of a group * @alt: alternate function to set to */ struct cygnus_mux { … }; /* * Keep track of Cygnus IOMUX configuration and prevent double configuration * * @cygnus_mux: Cygnus IOMUX register description * @is_configured: flag to indicate whether a mux setting has already been * configured */ struct cygnus_mux_log { … }; /* * Group based IOMUX configuration * * @name: name of the group * @pins: array of pins used by this group * @num_pins: total number of pins used by this group * @mux: Cygnus group based IOMUX configuration */ struct cygnus_pin_group { … }; /* * Cygnus mux function and supported pin groups * * @name: name of the function * @groups: array of groups that can be supported by this function * @num_groups: total number of groups that can be supported by this function */ struct cygnus_pin_function { … }; /* * Cygnus IOMUX pinctrl core * * @pctl: pointer to pinctrl_dev * @dev: pointer to device * @base0: first I/O register base of the Cygnus IOMUX controller * @base1: second I/O register base * @groups: pointer to array of groups * @num_groups: total number of groups * @functions: pointer to array of functions * @num_functions: total number of functions * @mux_log: pointer to the array of mux logs * @lock: lock to protect register access */ struct cygnus_pinctrl { … }; /* * Certain pins can be individually muxed to GPIO function * * @is_supported: flag to indicate GPIO mux is supported for this pin * @offset: register offset for GPIO mux override of a pin * @shift: bit shift for GPIO mux override of a pin */ struct cygnus_gpio_mux { … }; /* * Description of a pin in Cygnus * * @pin: pin number * @name: pin name * @gpio_mux: GPIO override related information */ struct cygnus_pin { … }; #define CYGNUS_PIN_DESC(p, n, i, o, s) … /* * List of pins in Cygnus */ static struct cygnus_pin cygnus_pins[] = …; /* * List of groups of pins */ static const unsigned bsc1_pins[] = …; static const unsigned pcie_clkreq_pins[] = …; static const unsigned i2s2_0_pins[] = …; static const unsigned i2s2_1_pins[] = …; static const unsigned i2s2_2_pins[] = …; static const unsigned i2s2_3_pins[] = …; static const unsigned i2s2_4_pins[] = …; static const unsigned pwm4_pins[] = …; static const unsigned pwm5_pins[] = …; static const unsigned key0_pins[] = …; static const unsigned key1_pins[] = …; static const unsigned key2_pins[] = …; static const unsigned key3_pins[] = …; static const unsigned key4_pins[] = …; static const unsigned key5_pins[] = …; static const unsigned key6_pins[] = …; static const unsigned audio_dte0_pins[] = …; static const unsigned key7_pins[] = …; static const unsigned audio_dte1_pins[] = …; static const unsigned key8_pins[] = …; static const unsigned key9_pins[] = …; static const unsigned key10_pins[] = …; static const unsigned key11_pins[] = …; static const unsigned key12_pins[] = …; static const unsigned key13_pins[] = …; static const unsigned key14_pins[] = …; static const unsigned audio_dte2_pins[] = …; static const unsigned key15_pins[] = …; static const unsigned audio_dte3_pins[] = …; static const unsigned pwm0_pins[] = …; static const unsigned pwm1_pins[] = …; static const unsigned pwm2_pins[] = …; static const unsigned pwm3_pins[] = …; static const unsigned sdio0_pins[] = …; static const unsigned smart_card0_pins[] = …; static const unsigned i2s0_0_pins[] = …; static const unsigned spdif_pins[] = …; static const unsigned smart_card1_pins[] = …; static const unsigned i2s1_0_pins[] = …; static const unsigned spi0_pins[] = …; static const unsigned spi1_pins[] = …; static const unsigned spi2_pins[] = …; static const unsigned spi3_pins[] = …; static const unsigned sw_led0_0_pins[] = …; static const unsigned d1w_pins[] = …; static const unsigned uart4_pins[] = …; static const unsigned sw_led2_0_pins[] = …; static const unsigned lcd_pins[] = …; static const unsigned sram_0_pins[] = …; static const unsigned spi5_pins[] = …; static const unsigned uart0_pins[] = …; static const unsigned sw_led0_1_pins[] = …; static const unsigned uart1_dte_pins[] = …; static const unsigned uart2_pins[] = …; static const unsigned uart1_pins[] = …; static const unsigned uart3_pins[] = …; static const unsigned qspi_0_pins[] = …; static const unsigned nand_pins[] = …; static const unsigned sdio0_cd_pins[] = …; static const unsigned sdio0_mmc_pins[] = …; static const unsigned sdio1_data_0_pins[] = …; static const unsigned can0_pins[] = …; static const unsigned spi4_0_pins[] = …; static const unsigned sdio1_data_1_pins[] = …; static const unsigned can1_pins[] = …; static const unsigned spi4_1_pins[] = …; static const unsigned sdio1_cd_pins[] = …; static const unsigned sdio1_led_pins[] = …; static const unsigned sw_led2_1_pins[] = …; static const unsigned sdio1_mmc_pins[] = …; static const unsigned cam_led_pins[] = …; static const unsigned sw_led1_pins[] = …; static const unsigned cam_0_pins[] = …; static const unsigned cam_1_pins[] = …; static const unsigned sram_1_pins[] = …; static const unsigned qspi_1_pins[] = …; static const unsigned smart_card0_fcb_pins[] = …; static const unsigned i2s0_1_pins[] = …; static const unsigned smart_card1_fcb_pins[] = …; static const unsigned i2s1_1_pins[] = …; static const unsigned gpio0_3p3_pins[] = …; static const unsigned usb0_oc_pins[] = …; static const unsigned gpio1_3p3_pins[] = …; static const unsigned usb1_oc_pins[] = …; static const unsigned gpio2_3p3_pins[] = …; static const unsigned usb2_oc_pins[] = …; #define CYGNUS_PIN_GROUP(group_name, off, sh, al) … /* * List of Cygnus pin groups */ static const struct cygnus_pin_group cygnus_pin_groups[] = …; /* * List of groups supported by functions */ static const char * const i2s0_grps[] = …; static const char * const i2s1_grps[] = …; static const char * const i2s2_grps[] = …; static const char * const spdif_grps[] = …; static const char * const pwm0_grps[] = …; static const char * const pwm1_grps[] = …; static const char * const pwm2_grps[] = …; static const char * const pwm3_grps[] = …; static const char * const pwm4_grps[] = …; static const char * const pwm5_grps[] = …; static const char * const key_grps[] = …; static const char * const audio_dte_grps[] = …; static const char * const smart_card0_grps[] = …; static const char * const smart_card1_grps[] = …; static const char * const spi0_grps[] = …; static const char * const spi1_grps[] = …; static const char * const spi2_grps[] = …; static const char * const spi3_grps[] = …; static const char * const spi4_grps[] = …; static const char * const spi5_grps[] = …; static const char * const sw_led0_grps[] = …; static const char * const sw_led1_grps[] = …; static const char * const sw_led2_grps[] = …; static const char * const d1w_grps[] = …; static const char * const lcd_grps[] = …; static const char * const sram_grps[] = …; static const char * const uart0_grps[] = …; static const char * const uart1_grps[] = …; static const char * const uart2_grps[] = …; static const char * const uart3_grps[] = …; static const char * const uart4_grps[] = …; static const char * const qspi_grps[] = …; static const char * const nand_grps[] = …; static const char * const sdio0_grps[] = …; static const char * const sdio1_grps[] = …; static const char * const can0_grps[] = …; static const char * const can1_grps[] = …; static const char * const cam_grps[] = …; static const char * const bsc1_grps[] = …; static const char * const pcie_clkreq_grps[] = …; static const char * const usb0_oc_grps[] = …; static const char * const usb1_oc_grps[] = …; static const char * const usb2_oc_grps[] = …; #define CYGNUS_PIN_FUNCTION(func) … /* * List of supported functions in Cygnus */ static const struct cygnus_pin_function cygnus_pin_functions[] = …; static int cygnus_get_groups_count(struct pinctrl_dev *pctrl_dev) { … } static const char *cygnus_get_group_name(struct pinctrl_dev *pctrl_dev, unsigned selector) { … } static int cygnus_get_group_pins(struct pinctrl_dev *pctrl_dev, unsigned selector, const unsigned **pins, unsigned *num_pins) { … } static void cygnus_pin_dbg_show(struct pinctrl_dev *pctrl_dev, struct seq_file *s, unsigned offset) { … } static const struct pinctrl_ops cygnus_pinctrl_ops = …; static int cygnus_get_functions_count(struct pinctrl_dev *pctrl_dev) { … } static const char *cygnus_get_function_name(struct pinctrl_dev *pctrl_dev, unsigned selector) { … } static int cygnus_get_function_groups(struct pinctrl_dev *pctrl_dev, unsigned selector, const char * const **groups, unsigned * const num_groups) { … } static int cygnus_pinmux_set(struct cygnus_pinctrl *pinctrl, const struct cygnus_pin_function *func, const struct cygnus_pin_group *grp, struct cygnus_mux_log *mux_log) { … } static int cygnus_pinmux_set_mux(struct pinctrl_dev *pctrl_dev, unsigned func_select, unsigned grp_select) { … } static int cygnus_gpio_request_enable(struct pinctrl_dev *pctrl_dev, struct pinctrl_gpio_range *range, unsigned pin) { … } static void cygnus_gpio_disable_free(struct pinctrl_dev *pctrl_dev, struct pinctrl_gpio_range *range, unsigned pin) { … } static const struct pinmux_ops cygnus_pinmux_ops = …; static struct pinctrl_desc cygnus_pinctrl_desc = …; static int cygnus_mux_log_init(struct cygnus_pinctrl *pinctrl) { … } static int cygnus_pinmux_probe(struct platform_device *pdev) { … } static const struct of_device_id cygnus_pinmux_of_match[] = …; static struct platform_driver cygnus_pinmux_driver = …; static int __init cygnus_pinmux_init(void) { … } arch_initcall(cygnus_pinmux_init);
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