/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2016, 2017 Cavium Inc. */ #include <linux/bitops.h> #include <linux/gpio/driver.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/spinlock.h> #define GPIO_RX_DAT … #define GPIO_TX_SET … #define GPIO_TX_CLR … #define GPIO_CONST … #define GPIO_CONST_GPIOS_MASK … #define GPIO_BIT_CFG … #define GPIO_BIT_CFG_TX_OE … #define GPIO_BIT_CFG_PIN_XOR … #define GPIO_BIT_CFG_INT_EN … #define GPIO_BIT_CFG_INT_TYPE … #define GPIO_BIT_CFG_FIL_MASK … #define GPIO_BIT_CFG_FIL_CNT_SHIFT … #define GPIO_BIT_CFG_FIL_SEL_SHIFT … #define GPIO_BIT_CFG_TX_OD … #define GPIO_BIT_CFG_PIN_SEL_MASK … #define GPIO_INTR … #define GPIO_INTR_INTR … #define GPIO_INTR_INTR_W1S … #define GPIO_INTR_ENA_W1C … #define GPIO_INTR_ENA_W1S … #define GPIO_2ND_BANK … #define GLITCH_FILTER_400NS … struct thunderx_gpio; struct thunderx_line { … }; struct thunderx_gpio { … }; static unsigned int bit_cfg_reg(unsigned int line) { … } static unsigned int intr_reg(unsigned int line) { … } static bool thunderx_gpio_is_gpio_nowarn(struct thunderx_gpio *txgpio, unsigned int line) { … } /* * Check (and WARN) that the pin is available for GPIO. We will not * allow modification of the state of non-GPIO pins from this driver. */ static bool thunderx_gpio_is_gpio(struct thunderx_gpio *txgpio, unsigned int line) { … } static int thunderx_gpio_request(struct gpio_chip *chip, unsigned int line) { … } static int thunderx_gpio_dir_in(struct gpio_chip *chip, unsigned int line) { … } static void thunderx_gpio_set(struct gpio_chip *chip, unsigned int line, int value) { … } static int thunderx_gpio_dir_out(struct gpio_chip *chip, unsigned int line, int value) { … } static int thunderx_gpio_get_direction(struct gpio_chip *chip, unsigned int line) { … } static int thunderx_gpio_set_config(struct gpio_chip *chip, unsigned int line, unsigned long cfg) { … } static int thunderx_gpio_get(struct gpio_chip *chip, unsigned int line) { … } static void thunderx_gpio_set_multiple(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits) { … } static void thunderx_gpio_irq_ack(struct irq_data *d) { … } static void thunderx_gpio_irq_mask(struct irq_data *d) { … } static void thunderx_gpio_irq_mask_ack(struct irq_data *d) { … } static void thunderx_gpio_irq_unmask(struct irq_data *d) { … } static int thunderx_gpio_irq_set_type(struct irq_data *d, unsigned int flow_type) { … } static void thunderx_gpio_irq_enable(struct irq_data *d) { … } static void thunderx_gpio_irq_disable(struct irq_data *d) { … } /* * Interrupts are chained from underlying MSI-X vectors. We have * these irq_chip functions to be able to handle level triggering * semantics and other acknowledgment tasks associated with the GPIO * mechanism. */ static const struct irq_chip thunderx_gpio_irq_chip = …; static int thunderx_gpio_child_to_parent_hwirq(struct gpio_chip *gc, unsigned int child, unsigned int child_type, unsigned int *parent, unsigned int *parent_type) { … } static int thunderx_gpio_populate_parent_alloc_info(struct gpio_chip *chip, union gpio_irq_fwspec *gfwspec, unsigned int parent_hwirq, unsigned int parent_type) { … } static int thunderx_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static void thunderx_gpio_remove(struct pci_dev *pdev) { … } static const struct pci_device_id thunderx_gpio_id_table[] = …; MODULE_DEVICE_TABLE(pci, thunderx_gpio_id_table); static struct pci_driver thunderx_gpio_driver = …; module_pci_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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