// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for Allwinner sunXi IR controller * * Copyright (C) 2014 Alexsey Shestacov <[email protected]> * Copyright (C) 2014 Alexander Bersenev <[email protected]> * * Based on sun5i-ir.c: * Copyright (C) 2007-2012 Daniel Wang * Allwinner Technology Co., Ltd. <www.allwinnertech.com> */ #include <linux/clk.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/reset.h> #include <media/rc-core.h> #define SUNXI_IR_DEV … /* Registers */ /* IR Control */ #define SUNXI_IR_CTL_REG … /* Global Enable */ #define REG_CTL_GEN … /* RX block enable */ #define REG_CTL_RXEN … /* CIR mode */ #define REG_CTL_MD … /* Rx Config */ #define SUNXI_IR_RXCTL_REG … /* Pulse Polarity Invert flag */ #define REG_RXCTL_RPPI … /* Rx Data */ #define SUNXI_IR_RXFIFO_REG … /* Rx Interrupt Enable */ #define SUNXI_IR_RXINT_REG … /* Rx FIFO Overflow Interrupt Enable */ #define REG_RXINT_ROI_EN … /* Rx Packet End Interrupt Enable */ #define REG_RXINT_RPEI_EN … /* Rx FIFO Data Available Interrupt Enable */ #define REG_RXINT_RAI_EN … /* Rx FIFO available byte level */ #define REG_RXINT_RAL(val) … /* Rx Interrupt Status */ #define SUNXI_IR_RXSTA_REG … /* Rx FIFO Overflow */ #define REG_RXSTA_ROI … /* Rx Packet End */ #define REG_RXSTA_RPE … /* Rx FIFO Data Available */ #define REG_RXSTA_RA … /* RX FIFO Get Available Counter */ #define REG_RXSTA_GET_AC(val) … /* Clear all interrupt status value */ #define REG_RXSTA_CLEARALL … /* IR Sample Config */ #define SUNXI_IR_CIR_REG … /* CIR_REG register noise threshold */ #define REG_CIR_NTHR(val) … /* CIR_REG register idle threshold */ #define REG_CIR_ITHR(val) … /* Required frequency for IR0 or IR1 clock in CIR mode (default) */ #define SUNXI_IR_BASE_CLK … /* Noise threshold in samples */ #define SUNXI_IR_RXNOISE … /** * struct sunxi_ir_quirks - Differences between SoC variants. * * @has_reset: SoC needs reset deasserted. * @fifo_size: size of the fifo. */ struct sunxi_ir_quirks { … }; struct sunxi_ir { … }; static irqreturn_t sunxi_ir_irq(int irqno, void *dev_id) { … } /* Convert idle threshold to usec */ static unsigned int sunxi_ithr_to_usec(unsigned int base_clk, unsigned int ithr) { … } /* Convert usec to idle threshold */ static unsigned int sunxi_usec_to_ithr(unsigned int base_clk, unsigned int usec) { … } static int sunxi_ir_set_timeout(struct rc_dev *rc_dev, unsigned int timeout) { … } static int sunxi_ir_hw_init(struct device *dev) { … } static void sunxi_ir_hw_exit(struct device *dev) { … } static int __maybe_unused sunxi_ir_suspend(struct device *dev) { … } static int __maybe_unused sunxi_ir_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(sunxi_ir_pm_ops, sunxi_ir_suspend, sunxi_ir_resume); static int sunxi_ir_probe(struct platform_device *pdev) { … } static void sunxi_ir_remove(struct platform_device *pdev) { … } static void sunxi_ir_shutdown(struct platform_device *pdev) { … } static const struct sunxi_ir_quirks sun4i_a10_ir_quirks = …; static const struct sunxi_ir_quirks sun5i_a13_ir_quirks = …; static const struct sunxi_ir_quirks sun6i_a31_ir_quirks = …; static const struct of_device_id sunxi_ir_match[] = …; MODULE_DEVICE_TABLE(of, sunxi_ir_match); static struct platform_driver sunxi_ir_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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