|  | /* SPDX-License-Identifier: GPL-2.0-or-later */ | 
|  | #ifndef __I2C_VIAI2C_COMMON_H_ | 
|  | #define __I2C_VIAI2C_COMMON_H_ | 
|  |  | 
|  | #include <linux/delay.h> | 
|  | #include <linux/err.h> | 
|  | #include <linux/i2c.h> | 
|  | #include <linux/interrupt.h> | 
|  | #include <linux/io.h> | 
|  | #include <linux/module.h> | 
|  | #include <linux/of_irq.h> | 
|  | #include <linux/platform_device.h> | 
|  |  | 
|  | /* REG_CR Bit fields */ | 
|  | #define VIAI2C_REG_CR		0x00 | 
|  | #define VIAI2C_CR_ENABLE		BIT(0) | 
|  | #define VIAI2C_CR_RX_END		BIT(1) | 
|  | #define VIAI2C_CR_TX_END		BIT(2) | 
|  | #define VIAI2C_CR_CPU_RDY		BIT(3) | 
|  | #define VIAI2C_CR_END_MASK		GENMASK(2, 1) | 
|  |  | 
|  | /* REG_TCR Bit fields */ | 
|  | #define VIAI2C_REG_TCR		0x02 | 
|  | #define VIAI2C_TCR_HS_MODE		BIT(13) | 
|  | #define VIAI2C_TCR_READ			BIT(14) | 
|  | #define VIAI2C_TCR_FAST			BIT(15) | 
|  | #define VIAI2C_TCR_ADDR_MASK		GENMASK(6, 0) | 
|  |  | 
|  | /* REG_CSR Bit fields */ | 
|  | #define VIAI2C_REG_CSR		0x04 | 
|  | #define VIAI2C_CSR_RCV_NOT_ACK		BIT(0) | 
|  | #define VIAI2C_CSR_RCV_ACK_MASK		BIT(0) | 
|  | #define VIAI2C_CSR_READY_MASK		BIT(1) | 
|  |  | 
|  | /* REG_ISR Bit fields */ | 
|  | #define VIAI2C_REG_ISR		0x06 | 
|  | #define VIAI2C_ISR_NACK_ADDR		BIT(0) | 
|  | #define VIAI2C_ISR_BYTE_END		BIT(1) | 
|  | #define VIAI2C_ISR_SCL_TIMEOUT		BIT(2) | 
|  | #define VIAI2C_ISR_MASK_ALL		GENMASK(2, 0) | 
|  |  | 
|  | /* REG_IMR Bit fields */ | 
|  | #define VIAI2C_REG_IMR		0x08 | 
|  | #define VIAI2C_IMR_BYTE			BIT(1) | 
|  | #define VIAI2C_IMR_ENABLE_ALL		GENMASK(2, 0) | 
|  |  | 
|  | #define VIAI2C_REG_CDR		0x0A | 
|  | #define VIAI2C_REG_TR		0x0C | 
|  | #define VIAI2C_REG_MCR		0x0E | 
|  |  | 
|  | #define VIAI2C_TIMEOUT		(msecs_to_jiffies(1000)) | 
|  |  | 
|  | enum { | 
|  | VIAI2C_PLAT_WMT, | 
|  | VIAI2C_PLAT_ZHAOXIN | 
|  | }; | 
|  |  | 
|  | enum { | 
|  | VIAI2C_BYTE_MODE, | 
|  | VIAI2C_FIFO_MODE | 
|  | }; | 
|  |  | 
|  | struct viai2c { | 
|  | struct i2c_adapter	adapter; | 
|  | struct completion	complete; | 
|  | struct device		*dev; | 
|  | void __iomem		*base; | 
|  | struct clk		*clk; | 
|  | u16			tcr; | 
|  | int			irq; | 
|  | u16			xfered_len; | 
|  | struct i2c_msg		*msg; | 
|  | int			ret; | 
|  | bool			last; | 
|  | unsigned int		mode; | 
|  | unsigned int		platform; | 
|  | void			*pltfm_priv; | 
|  | }; | 
|  |  | 
|  | int viai2c_wait_bus_not_busy(struct viai2c *i2c); | 
|  | int viai2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num); | 
|  | int viai2c_init(struct platform_device *pdev, struct viai2c **pi2c, int plat); | 
|  | int viai2c_irq_xfer(struct viai2c *i2c); | 
|  |  | 
|  | #endif |