// SPDX-License-Identifier: GPL-2.0-or-later /* * Ingenic JZ4780 I2C bus driver * * Copyright (C) 2006 - 2009 Ingenic Semiconductor Inc. * Copyright (C) 2015 Imagination Technologies * Copyright (C) 2019 周琰杰 (Zhou Yanjie) <[email protected]> */ #include <linux/bitops.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/time.h> #define JZ4780_I2C_CTRL … #define JZ4780_I2C_TAR … #define JZ4780_I2C_SAR … #define JZ4780_I2C_DC … #define JZ4780_I2C_SHCNT … #define JZ4780_I2C_SLCNT … #define JZ4780_I2C_FHCNT … #define JZ4780_I2C_FLCNT … #define JZ4780_I2C_INTST … #define JZ4780_I2C_INTM … #define JZ4780_I2C_RXTL … #define JZ4780_I2C_TXTL … #define JZ4780_I2C_CINTR … #define JZ4780_I2C_CRXUF … #define JZ4780_I2C_CRXOF … #define JZ4780_I2C_CTXOF … #define JZ4780_I2C_CRXREQ … #define JZ4780_I2C_CTXABRT … #define JZ4780_I2C_CRXDONE … #define JZ4780_I2C_CACT … #define JZ4780_I2C_CSTP … #define JZ4780_I2C_CSTT … #define JZ4780_I2C_CGC … #define JZ4780_I2C_ENB … #define JZ4780_I2C_STA … #define JZ4780_I2C_TXABRT … #define JZ4780_I2C_DMACR … #define JZ4780_I2C_DMATDLR … #define JZ4780_I2C_DMARDLR … #define JZ4780_I2C_SDASU … #define JZ4780_I2C_ACKGC … #define JZ4780_I2C_ENSTA … #define JZ4780_I2C_SDAHD … #define X1000_I2C_SDAHD … #define JZ4780_I2C_CTRL_STPHLD … #define JZ4780_I2C_CTRL_SLVDIS … #define JZ4780_I2C_CTRL_REST … #define JZ4780_I2C_CTRL_MATP … #define JZ4780_I2C_CTRL_SATP … #define JZ4780_I2C_CTRL_SPDF … #define JZ4780_I2C_CTRL_SPDS … #define JZ4780_I2C_CTRL_MD … #define JZ4780_I2C_STA_SLVACT … #define JZ4780_I2C_STA_MSTACT … #define JZ4780_I2C_STA_RFF … #define JZ4780_I2C_STA_RFNE … #define JZ4780_I2C_STA_TFE … #define JZ4780_I2C_STA_TFNF … #define JZ4780_I2C_STA_ACT … #define X1000_I2C_DC_STOP … #define JZ4780_I2C_INTST_IGC … #define JZ4780_I2C_INTST_ISTT … #define JZ4780_I2C_INTST_ISTP … #define JZ4780_I2C_INTST_IACT … #define JZ4780_I2C_INTST_RXDN … #define JZ4780_I2C_INTST_TXABT … #define JZ4780_I2C_INTST_RDREQ … #define JZ4780_I2C_INTST_TXEMP … #define JZ4780_I2C_INTST_TXOF … #define JZ4780_I2C_INTST_RXFL … #define JZ4780_I2C_INTST_RXOF … #define JZ4780_I2C_INTST_RXUF … #define JZ4780_I2C_INTM_MIGC … #define JZ4780_I2C_INTM_MISTT … #define JZ4780_I2C_INTM_MISTP … #define JZ4780_I2C_INTM_MIACT … #define JZ4780_I2C_INTM_MRXDN … #define JZ4780_I2C_INTM_MTXABT … #define JZ4780_I2C_INTM_MRDREQ … #define JZ4780_I2C_INTM_MTXEMP … #define JZ4780_I2C_INTM_MTXOF … #define JZ4780_I2C_INTM_MRXFL … #define JZ4780_I2C_INTM_MRXOF … #define JZ4780_I2C_INTM_MRXUF … #define JZ4780_I2C_DC_READ … #define JZ4780_I2C_SDAHD_HDENB … #define JZ4780_I2C_ENB_I2C … #define JZ4780_I2CSHCNT_ADJUST(n) … #define JZ4780_I2CSLCNT_ADJUST(n) … #define JZ4780_I2CFHCNT_ADJUST(n) … #define JZ4780_I2CFLCNT_ADJUST(n) … #define JZ4780_I2C_FIFO_LEN … #define X1000_I2C_FIFO_LEN … #define JZ4780_I2C_TIMEOUT … #define BUFSIZE … enum ingenic_i2c_version { … }; /* ingenic_i2c_config: SoC specific config data. */ struct ingenic_i2c_config { … }; struct jz4780_i2c { … }; static inline unsigned short jz4780_i2c_readw(struct jz4780_i2c *i2c, unsigned long offset) { … } static inline void jz4780_i2c_writew(struct jz4780_i2c *i2c, unsigned long offset, unsigned short val) { … } static int jz4780_i2c_disable(struct jz4780_i2c *i2c) { … } static int jz4780_i2c_enable(struct jz4780_i2c *i2c) { … } static int jz4780_i2c_set_target(struct jz4780_i2c *i2c, unsigned char address) { … } static int jz4780_i2c_set_speed(struct jz4780_i2c *i2c) { … } static int jz4780_i2c_cleanup(struct jz4780_i2c *i2c) { … } static int jz4780_i2c_prepare(struct jz4780_i2c *i2c) { … } static void jz4780_i2c_send_rcmd(struct jz4780_i2c *i2c, int cmd_count, int cmd_left) { … } static void jz4780_i2c_trans_done(struct jz4780_i2c *i2c) { … } static irqreturn_t jz4780_i2c_irq(int irqno, void *dev_id) { … } static void jz4780_i2c_txabrt(struct jz4780_i2c *i2c, int src) { … } static inline int jz4780_i2c_xfer_read(struct jz4780_i2c *i2c, unsigned char *buf, int len, int cnt, int idx) { … } static inline int jz4780_i2c_xfer_write(struct jz4780_i2c *i2c, unsigned char *buf, int len, int cnt, int idx) { … } static int jz4780_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, int count) { … } static u32 jz4780_i2c_functionality(struct i2c_adapter *adap) { … } static const struct i2c_algorithm jz4780_i2c_algorithm = …; static const struct ingenic_i2c_config jz4780_i2c_config = …; static const struct ingenic_i2c_config x1000_i2c_config = …; static const struct of_device_id jz4780_i2c_of_matches[] = …; MODULE_DEVICE_TABLE(of, jz4780_i2c_of_matches); static int jz4780_i2c_probe(struct platform_device *pdev) { … } static void jz4780_i2c_remove(struct platform_device *pdev) { … } static struct platform_driver jz4780_i2c_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
Codebase Browser
linux