// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2012-2014, 2016-2021 The Linux Foundation. All rights reserved. * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. 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/spmi.h> #include <linux/types.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinmux.h> #include <dt-bindings/pinctrl/qcom,pmic-gpio.h> #include "../core.h" #include "../pinctrl-utils.h" #define PMIC_GPIO_ADDRESS_RANGE … /* type and subtype registers base address offsets */ #define PMIC_GPIO_REG_TYPE … #define PMIC_GPIO_REG_SUBTYPE … /* GPIO peripheral type and subtype out_values */ #define PMIC_GPIO_TYPE … #define PMIC_GPIO_SUBTYPE_GPIO_4CH … #define PMIC_GPIO_SUBTYPE_GPIOC_4CH … #define PMIC_GPIO_SUBTYPE_GPIO_8CH … #define PMIC_GPIO_SUBTYPE_GPIOC_8CH … #define PMIC_GPIO_SUBTYPE_GPIO_LV … #define PMIC_GPIO_SUBTYPE_GPIO_MV … #define PMIC_GPIO_SUBTYPE_GPIO_LV_VIN2 … #define PMIC_GPIO_SUBTYPE_GPIO_MV_VIN3 … #define PMIC_MPP_REG_RT_STS … #define PMIC_MPP_REG_RT_STS_VAL_MASK … /* control register base address offsets */ #define PMIC_GPIO_REG_MODE_CTL … #define PMIC_GPIO_REG_DIG_VIN_CTL … #define PMIC_GPIO_REG_DIG_PULL_CTL … #define PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL … #define PMIC_GPIO_REG_DIG_IN_CTL … #define PMIC_GPIO_REG_DIG_OUT_CTL … #define PMIC_GPIO_REG_EN_CTL … #define PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL … /* PMIC_GPIO_REG_MODE_CTL */ #define PMIC_GPIO_REG_MODE_VALUE_SHIFT … #define PMIC_GPIO_REG_MODE_FUNCTION_SHIFT … #define PMIC_GPIO_REG_MODE_FUNCTION_MASK … #define PMIC_GPIO_REG_MODE_DIR_SHIFT … #define PMIC_GPIO_REG_MODE_DIR_MASK … #define PMIC_GPIO_MODE_DIGITAL_INPUT … #define PMIC_GPIO_MODE_DIGITAL_OUTPUT … #define PMIC_GPIO_MODE_DIGITAL_INPUT_OUTPUT … #define PMIC_GPIO_MODE_ANALOG_PASS_THRU … #define PMIC_GPIO_REG_LV_MV_MODE_DIR_MASK … /* PMIC_GPIO_REG_DIG_VIN_CTL */ #define PMIC_GPIO_REG_VIN_SHIFT … #define PMIC_GPIO_REG_VIN_MASK … /* PMIC_GPIO_REG_DIG_PULL_CTL */ #define PMIC_GPIO_REG_PULL_SHIFT … #define PMIC_GPIO_REG_PULL_MASK … #define PMIC_GPIO_PULL_DOWN … #define PMIC_GPIO_PULL_DISABLE … /* PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL for LV/MV */ #define PMIC_GPIO_LV_MV_OUTPUT_INVERT … #define PMIC_GPIO_LV_MV_OUTPUT_INVERT_SHIFT … #define PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK … /* PMIC_GPIO_REG_DIG_IN_CTL */ #define PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN … #define PMIC_GPIO_LV_MV_DIG_IN_DTEST_SEL_MASK … #define PMIC_GPIO_DIG_IN_DTEST_SEL_MASK … /* PMIC_GPIO_REG_DIG_OUT_CTL */ #define PMIC_GPIO_REG_OUT_STRENGTH_SHIFT … #define PMIC_GPIO_REG_OUT_STRENGTH_MASK … #define PMIC_GPIO_REG_OUT_TYPE_SHIFT … #define PMIC_GPIO_REG_OUT_TYPE_MASK … /* * Output type - indicates pin should be configured as push-pull, * open drain or open source. */ #define PMIC_GPIO_OUT_BUF_CMOS … #define PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS … #define PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS … #define PMIC_GPIO_OUT_STRENGTH_LOW … #define PMIC_GPIO_OUT_STRENGTH_HIGH … /* PMIC_GPIO_REG_EN_CTL */ #define PMIC_GPIO_REG_MASTER_EN_SHIFT … #define PMIC_GPIO_PHYSICAL_OFFSET … /* PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL */ #define PMIC_GPIO_LV_MV_ANA_MUX_SEL_MASK … /* Qualcomm specific pin configurations */ #define PMIC_GPIO_CONF_PULL_UP … #define PMIC_GPIO_CONF_STRENGTH … #define PMIC_GPIO_CONF_ATEST … #define PMIC_GPIO_CONF_ANALOG_PASS … #define PMIC_GPIO_CONF_DTEST_BUFFER … /* The index of each function in pmic_gpio_functions[] array */ enum pmic_gpio_func_index { … }; /** * struct pmic_gpio_pad - keep current GPIO settings * @base: Address base in SPMI device. * @is_enabled: Set to false when GPIO should be put in high Z state. * @out_value: Cached pin output value * @have_buffer: Set to true if GPIO output could be configured in push-pull, * open-drain or open-source mode. * @output_enabled: Set to true if GPIO output logic is enabled. * @input_enabled: Set to true if GPIO input buffer logic is enabled. * @analog_pass: Set to true if GPIO is in analog-pass-through mode. * @lv_mv_type: Set to true if GPIO subtype is GPIO_LV(0x10) or GPIO_MV(0x11). * @num_sources: Number of power-sources supported by this GPIO. * @power_source: Current power-source used. * @buffer_type: Push-pull, open-drain or open-source. * @pullup: Constant current which flow trough GPIO output buffer. * @strength: No, Low, Medium, High * @function: See pmic_gpio_functions[] * @atest: the ATEST selection for GPIO analog-pass-through mode * @dtest_buffer: the DTEST buffer selection for digital input mode. */ struct pmic_gpio_pad { … }; struct pmic_gpio_state { … }; static const struct pinconf_generic_params pmic_gpio_bindings[] = …; #ifdef CONFIG_DEBUG_FS static const struct pin_config_item pmic_conf_items[ARRAY_SIZE(pmic_gpio_bindings)] = …; #endif static const char *const pmic_gpio_groups[] = …; static const char *const pmic_gpio_functions[] = …; static int pmic_gpio_read(struct pmic_gpio_state *state, struct pmic_gpio_pad *pad, unsigned int addr) { … } static int pmic_gpio_write(struct pmic_gpio_state *state, struct pmic_gpio_pad *pad, unsigned int addr, unsigned int val) { … } static int pmic_gpio_get_groups_count(struct pinctrl_dev *pctldev) { … } static const char *pmic_gpio_get_group_name(struct pinctrl_dev *pctldev, unsigned pin) { … } static int pmic_gpio_get_group_pins(struct pinctrl_dev *pctldev, unsigned pin, const unsigned **pins, unsigned *num_pins) { … } static const struct pinctrl_ops pmic_gpio_pinctrl_ops = …; static int pmic_gpio_get_functions_count(struct pinctrl_dev *pctldev) { … } static const char *pmic_gpio_get_function_name(struct pinctrl_dev *pctldev, unsigned function) { … } static int pmic_gpio_get_function_groups(struct pinctrl_dev *pctldev, unsigned function, const char *const **groups, unsigned *const num_qgroups) { … } static int pmic_gpio_set_mux(struct pinctrl_dev *pctldev, unsigned function, unsigned pin) { … } static const struct pinmux_ops pmic_gpio_pinmux_ops = …; static int pmic_gpio_config_get(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *config) { … } static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *configs, unsigned nconfs) { … } static void pmic_gpio_config_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned pin) { … } static const struct pinconf_ops pmic_gpio_pinconf_ops = …; static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned pin) { … } static int pmic_gpio_direction_output(struct gpio_chip *chip, unsigned pin, int val) { … } static int pmic_gpio_get(struct gpio_chip *chip, unsigned pin) { … } static void pmic_gpio_set(struct gpio_chip *chip, unsigned pin, int value) { … } static int pmic_gpio_of_xlate(struct gpio_chip *chip, const struct of_phandle_args *gpio_desc, u32 *flags) { … } static void pmic_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { … } static const struct gpio_chip pmic_gpio_gpio_template = …; static int pmic_gpio_populate(struct pmic_gpio_state *state, struct pmic_gpio_pad *pad) { … } static int pmic_gpio_domain_translate(struct irq_domain *domain, struct irq_fwspec *fwspec, unsigned long *hwirq, unsigned int *type) { … } static unsigned int pmic_gpio_child_offset_to_irq(struct gpio_chip *chip, unsigned int offset) { … } static int pmic_gpio_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 int pmic_gpio_populate_parent_fwspec(struct gpio_chip *chip, union gpio_irq_fwspec *gfwspec, unsigned int parent_hwirq, unsigned int parent_type) { … } static void pmic_gpio_irq_mask(struct irq_data *data) { … } static void pmic_gpio_irq_unmask(struct irq_data *data) { … } static const struct irq_chip spmi_gpio_irq_chip = …; static int pmic_gpio_probe(struct platform_device *pdev) { … } static void pmic_gpio_remove(struct platform_device *pdev) { … } static const struct of_device_id pmic_gpio_of_match[] = …; MODULE_DEVICE_TABLE(of, pmic_gpio_of_match); static struct platform_driver pmic_gpio_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …; MODULE_LICENSE(…) …;
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