// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2015, Sony Mobile Communications AB. * Copyright (c) 2013, The Linux Foundation. All rights reserved. */ #include <linux/gpio/driver.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/platform_device.h> #include <linux/regmap.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 <dt-bindings/pinctrl/qcom,pmic-gpio.h> #include "../core.h" #include "../pinctrl-utils.h" /* mode */ #define PM8XXX_GPIO_MODE_ENABLED … #define PM8XXX_GPIO_MODE_INPUT … #define PM8XXX_GPIO_MODE_OUTPUT … /* output buffer */ #define PM8XXX_GPIO_PUSH_PULL … #define PM8XXX_GPIO_OPEN_DRAIN … /* bias */ #define PM8XXX_GPIO_BIAS_PU_30 … #define PM8XXX_GPIO_BIAS_PU_1P5 … #define PM8XXX_GPIO_BIAS_PU_31P5 … #define PM8XXX_GPIO_BIAS_PU_1P5_30 … #define PM8XXX_GPIO_BIAS_PD … #define PM8XXX_GPIO_BIAS_NP … /* GPIO registers */ #define SSBI_REG_ADDR_GPIO_BASE … #define SSBI_REG_ADDR_GPIO(n) … #define PM8XXX_BANK_WRITE … #define PM8XXX_MAX_GPIOS … #define PM8XXX_GPIO_PHYSICAL_OFFSET … /* custom pinconf parameters */ #define PM8XXX_QCOM_DRIVE_STRENGH … #define PM8XXX_QCOM_PULL_UP_STRENGTH … /** * struct pm8xxx_pin_data - dynamic configuration for a pin * @reg: address of the control register * @power_source: logical selected voltage source, mapping in static data * is used translate to register values * @mode: operating mode for the pin (input/output) * @open_drain: output buffer configured as open-drain (vs push-pull) * @output_value: configured output value * @bias: register view of configured bias * @pull_up_strength: placeholder for selected pull up strength * only used to configure bias when pull up is selected * @output_strength: selector of output-strength * @disable: pin disabled / configured as tristate * @function: pinmux selector * @inverted: pin logic is inverted */ struct pm8xxx_pin_data { … }; struct pm8xxx_gpio { … }; static const struct pinconf_generic_params pm8xxx_gpio_bindings[] = …; #ifdef CONFIG_DEBUG_FS static const struct pin_config_item pm8xxx_conf_items[ARRAY_SIZE(pm8xxx_gpio_bindings)] = …; #endif static const char * const pm8xxx_groups[PM8XXX_MAX_GPIOS] = …; static const char * const pm8xxx_gpio_functions[] = …; static int pm8xxx_read_bank(struct pm8xxx_gpio *pctrl, struct pm8xxx_pin_data *pin, int bank) { … } static int pm8xxx_write_bank(struct pm8xxx_gpio *pctrl, struct pm8xxx_pin_data *pin, int bank, u8 val) { … } static int pm8xxx_get_groups_count(struct pinctrl_dev *pctldev) { … } static const char *pm8xxx_get_group_name(struct pinctrl_dev *pctldev, unsigned group) { … } static int pm8xxx_get_group_pins(struct pinctrl_dev *pctldev, unsigned group, const unsigned **pins, unsigned *num_pins) { … } static const struct pinctrl_ops pm8xxx_pinctrl_ops = …; static int pm8xxx_get_functions_count(struct pinctrl_dev *pctldev) { … } static const char *pm8xxx_get_function_name(struct pinctrl_dev *pctldev, unsigned function) { … } static int pm8xxx_get_function_groups(struct pinctrl_dev *pctldev, unsigned function, const char * const **groups, unsigned * const num_groups) { … } static int pm8xxx_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function, unsigned group) { … } static const struct pinmux_ops pm8xxx_pinmux_ops = …; static int pm8xxx_pin_config_get(struct pinctrl_dev *pctldev, unsigned int offset, unsigned long *config) { … } static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev, unsigned int offset, unsigned long *configs, unsigned num_configs) { … } static const struct pinconf_ops pm8xxx_pinconf_ops = …; static const struct pinctrl_desc pm8xxx_pinctrl_desc = …; static int pm8xxx_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { … } static int pm8xxx_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value) { … } static int pm8xxx_gpio_get(struct gpio_chip *chip, unsigned offset) { … } static void pm8xxx_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { … } static int pm8xxx_gpio_of_xlate(struct gpio_chip *chip, const struct of_phandle_args *gpio_desc, u32 *flags) { … } #ifdef CONFIG_DEBUG_FS static void pm8xxx_gpio_dbg_show_one(struct seq_file *s, struct pinctrl_dev *pctldev, struct gpio_chip *chip, unsigned offset, unsigned gpio) { … } static void pm8xxx_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { … } #else #define pm8xxx_gpio_dbg_show … #endif static const struct gpio_chip pm8xxx_gpio_template = …; static int pm8xxx_pin_populate(struct pm8xxx_gpio *pctrl, struct pm8xxx_pin_data *pin) { … } static void pm8xxx_irq_disable(struct irq_data *d) { … } static void pm8xxx_irq_enable(struct irq_data *d) { … } static const struct irq_chip pm8xxx_irq_chip = …; static int pm8xxx_domain_translate(struct irq_domain *domain, struct irq_fwspec *fwspec, unsigned long *hwirq, unsigned int *type) { … } static unsigned int pm8xxx_child_offset_to_irq(struct gpio_chip *chip, unsigned int offset) { … } static int pm8xxx_child_to_parent_hwirq(struct gpio_chip *chip, unsigned int child_hwirq, unsigned int child_type, unsigned int *parent_hwirq, unsigned int *parent_type) { … } static const struct of_device_id pm8xxx_gpio_of_match[] = …; MODULE_DEVICE_TABLE(of, pm8xxx_gpio_of_match); static int pm8xxx_gpio_probe(struct platform_device *pdev) { … } static void pm8xxx_gpio_remove(struct platform_device *pdev) { … } static struct platform_driver pm8xxx_gpio_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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