// SPDX-License-Identifier: GPL-2.0-only /* * GPIO driver for the ACCES PCIe-IDIO-24 family * Copyright (C) 2018 William Breathitt Gray * * This driver supports the following ACCES devices: PCIe-IDIO-24, * PCIe-IDI-24, PCIe-IDO-24, and PCIe-IDIO-12. */ #include <linux/bits.h> #include <linux/device.h> #include <linux/err.h> #include <linux/gpio/regmap.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/regmap.h> #include <linux/spinlock.h> #include <linux/types.h> /* * PLX PEX8311 PCI LCS_INTCSR Interrupt Control/Status * * Bit: Description * 0: Enable Interrupt Sources (Bit 0) * 1: Enable Interrupt Sources (Bit 1) * 2: Generate Internal PCI Bus Internal SERR# Interrupt * 3: Mailbox Interrupt Enable * 4: Power Management Interrupt Enable * 5: Power Management Interrupt * 6: Slave Read Local Data Parity Check Error Enable * 7: Slave Read Local Data Parity Check Error Status * 8: Internal PCI Wire Interrupt Enable * 9: PCI Express Doorbell Interrupt Enable * 10: PCI Abort Interrupt Enable * 11: Local Interrupt Input Enable * 12: Retry Abort Enable * 13: PCI Express Doorbell Interrupt Active * 14: PCI Abort Interrupt Active * 15: Local Interrupt Input Active * 16: Local Interrupt Output Enable * 17: Local Doorbell Interrupt Enable * 18: DMA Channel 0 Interrupt Enable * 19: DMA Channel 1 Interrupt Enable * 20: Local Doorbell Interrupt Active * 21: DMA Channel 0 Interrupt Active * 22: DMA Channel 1 Interrupt Active * 23: Built-In Self-Test (BIST) Interrupt Active * 24: Direct Master was the Bus Master during a Master or Target Abort * 25: DMA Channel 0 was the Bus Master during a Master or Target Abort * 26: DMA Channel 1 was the Bus Master during a Master or Target Abort * 27: Target Abort after internal 256 consecutive Master Retrys * 28: PCI Bus wrote data to LCS_MBOX0 * 29: PCI Bus wrote data to LCS_MBOX1 * 30: PCI Bus wrote data to LCS_MBOX2 * 31: PCI Bus wrote data to LCS_MBOX3 */ #define PLX_PEX8311_PCI_LCS_INTCSR … #define INTCSR_INTERNAL_PCI_WIRE … #define INTCSR_LOCAL_INPUT … #define IDIO_24_ENABLE_IRQ … #define IDIO_24_OUT_BASE … #define IDIO_24_TTLCMOS_OUT_REG … #define IDIO_24_IN_BASE … #define IDIO_24_TTLCMOS_IN_REG … #define IDIO_24_COS_STATUS_BASE … #define IDIO_24_CONTROL_REG … #define IDIO_24_COS_ENABLE … #define IDIO_24_SOFT_RESET … #define CONTROL_REG_OUT_MODE … #define COS_ENABLE_RISING … #define COS_ENABLE_FALLING … #define COS_ENABLE_BOTH … static const struct regmap_config pex8311_intcsr_regmap_config = …; static const struct regmap_range idio_24_wr_ranges[] = …; static const struct regmap_range idio_24_rd_ranges[] = …; static const struct regmap_range idio_24_volatile_ranges[] = …; static const struct regmap_access_table idio_24_wr_table = …; static const struct regmap_access_table idio_24_rd_table = …; static const struct regmap_access_table idio_24_volatile_table = …; static const struct regmap_config idio_24_regmap_config = …; #define IDIO_24_NGPIO_PER_REG … #define IDIO_24_REGMAP_IRQ(_id) … #define IDIO_24_IIN_IRQ(_id) … #define IDIO_24_TTL_IRQ(_id) … static const struct regmap_irq idio_24_regmap_irqs[] = …; /** * struct idio_24_gpio - GPIO device private data structure * @map: regmap for the device * @lock: synchronization lock to prevent I/O race conditions * @irq_type: type configuration for IRQs */ struct idio_24_gpio { … }; static int idio_24_handle_mask_sync(const int index, const unsigned int mask_buf_def, const unsigned int mask_buf, void *const irq_drv_data) { … } static int idio_24_set_type_config(unsigned int **const buf, const unsigned int type, const struct regmap_irq *const irq_data, const int idx, void *const irq_drv_data) { … } static int idio_24_reg_mask_xlate(struct gpio_regmap *const gpio, const unsigned int base, const unsigned int offset, unsigned int *const reg, unsigned int *const mask) { … } #define IDIO_24_NGPIO … static const char *idio_24_names[IDIO_24_NGPIO] = …; static int idio_24_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static const struct pci_device_id idio_24_pci_dev_id[] = …; MODULE_DEVICE_TABLE(pci, idio_24_pci_dev_id); static struct pci_driver idio_24_driver = …; module_pci_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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