#include <linux/export.h>
#include <linux/clk.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/delay.h>
#include "i2c-designware-core.h"

Macros
#define	DW_IC_CON 0x0

#define	DW_IC_TAR 0x4

#define	DW_IC_DATA_CMD 0x10

#define	DW_IC_SS_SCL_HCNT 0x14

#define	DW_IC_SS_SCL_LCNT 0x18

#define	DW_IC_FS_SCL_HCNT 0x1c

#define	DW_IC_FS_SCL_LCNT 0x20

#define	DW_IC_INTR_STAT 0x2c

#define	DW_IC_INTR_MASK 0x30

#define	DW_IC_RAW_INTR_STAT 0x34

#define	DW_IC_RX_TL 0x38

#define	DW_IC_TX_TL 0x3c

#define	DW_IC_CLR_INTR 0x40

#define	DW_IC_CLR_RX_UNDER 0x44

#define	DW_IC_CLR_RX_OVER 0x48

#define	DW_IC_CLR_TX_OVER 0x4c

#define	DW_IC_CLR_RD_REQ 0x50

#define	DW_IC_CLR_TX_ABRT 0x54

#define	DW_IC_CLR_RX_DONE 0x58

#define	DW_IC_CLR_ACTIVITY 0x5c

#define	DW_IC_CLR_STOP_DET 0x60

#define	DW_IC_CLR_START_DET 0x64

#define	DW_IC_CLR_GEN_CALL 0x68

#define	DW_IC_ENABLE 0x6c

#define	DW_IC_STATUS 0x70

#define	DW_IC_TXFLR 0x74

#define	DW_IC_RXFLR 0x78

#define	DW_IC_TX_ABRT_SOURCE 0x80

#define	DW_IC_COMP_PARAM_1 0xf4

#define	DW_IC_COMP_TYPE 0xfc

#define	DW_IC_COMP_TYPE_VALUE 0x44570140

#define	DW_IC_INTR_RX_UNDER 0x001

#define	DW_IC_INTR_RX_OVER 0x002

#define	DW_IC_INTR_RX_FULL 0x004

#define	DW_IC_INTR_TX_OVER 0x008

#define	DW_IC_INTR_TX_EMPTY 0x010

#define	DW_IC_INTR_RD_REQ 0x020

#define	DW_IC_INTR_TX_ABRT 0x040

#define	DW_IC_INTR_RX_DONE 0x080

#define	DW_IC_INTR_ACTIVITY 0x100

#define	DW_IC_INTR_STOP_DET 0x200

#define	DW_IC_INTR_START_DET 0x400

#define	DW_IC_INTR_GEN_CALL 0x800

#define	DW_IC_INTR_DEFAULT_MASK

#define	DW_IC_STATUS_ACTIVITY 0x1

#define	DW_IC_ERR_TX_ABRT 0x1

#define	STATUS_IDLE 0x0

#define	STATUS_WRITE_IN_PROGRESS 0x1

#define	STATUS_READ_IN_PROGRESS 0x2

#define	TIMEOUT 20 /* ms */

#define	ABRT_7B_ADDR_NOACK 0

#define	ABRT_10ADDR1_NOACK 1

#define	ABRT_10ADDR2_NOACK 2

#define	ABRT_TXDATA_NOACK 3

#define	ABRT_GCALL_NOACK 4

#define	ABRT_GCALL_READ 5

#define	ABRT_SBYTE_ACKDET 7

#define	ABRT_SBYTE_NORSTRT 9

#define	ABRT_10B_RD_NORSTRT 10

#define	ABRT_MASTER_DIS 11

#define	ARB_LOST 12

#define	DW_IC_TX_ABRT_7B_ADDR_NOACK (1UL << ABRT_7B_ADDR_NOACK)

#define	DW_IC_TX_ABRT_10ADDR1_NOACK (1UL << ABRT_10ADDR1_NOACK)

#define	DW_IC_TX_ABRT_10ADDR2_NOACK (1UL << ABRT_10ADDR2_NOACK)

#define	DW_IC_TX_ABRT_TXDATA_NOACK (1UL << ABRT_TXDATA_NOACK)

#define	DW_IC_TX_ABRT_GCALL_NOACK (1UL << ABRT_GCALL_NOACK)

#define	DW_IC_TX_ABRT_GCALL_READ (1UL << ABRT_GCALL_READ)

#define	DW_IC_TX_ABRT_SBYTE_ACKDET (1UL << ABRT_SBYTE_ACKDET)

#define	DW_IC_TX_ABRT_SBYTE_NORSTRT (1UL << ABRT_SBYTE_NORSTRT)

#define	DW_IC_TX_ABRT_10B_RD_NORSTRT (1UL << ABRT_10B_RD_NORSTRT)

#define	DW_IC_TX_ABRT_MASTER_DIS (1UL << ABRT_MASTER_DIS)

#define	DW_IC_TX_ARB_LOST (1UL << ARB_LOST)

#define	DW_IC_TX_ABRT_NOACK

Functions
u32	dw_readl (struct dw_i2c_dev *dev, int offset)

void	dw_writel (struct dw_i2c_dev *dev, u32 b, int offset)

int	i2c_dw_init (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_init)

int	i2c_dw_xfer (struct i2c_adapter *adap, struct i2c_msg msgs[], int num)

	EXPORT_SYMBOL_GPL (i2c_dw_xfer)

u32	i2c_dw_func (struct i2c_adapter *adap)

	EXPORT_SYMBOL_GPL (i2c_dw_func)

irqreturn_t	i2c_dw_isr (int this_irq, void *dev_id)

	EXPORT_SYMBOL_GPL (i2c_dw_isr)

void	i2c_dw_enable (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_enable)

u32	i2c_dw_is_enabled (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_is_enabled)

void	i2c_dw_disable (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_disable)

void	i2c_dw_clear_int (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_clear_int)

void	i2c_dw_disable_int (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_disable_int)

u32	i2c_dw_read_comp_param (struct dw_i2c_dev *dev)

	EXPORT_SYMBOL_GPL (i2c_dw_read_comp_param)

Macro Definition Documentation

#define ABRT_10ADDR1_NOACK 1

Definition at line 112 of file i2c-designware-core.c.

#define ABRT_10ADDR2_NOACK 2

Definition at line 113 of file i2c-designware-core.c.

#define ABRT_10B_RD_NORSTRT 10

Definition at line 119 of file i2c-designware-core.c.

#define ABRT_7B_ADDR_NOACK 0

Definition at line 111 of file i2c-designware-core.c.

#define ABRT_GCALL_NOACK 4

Definition at line 115 of file i2c-designware-core.c.

#define ABRT_GCALL_READ 5

Definition at line 116 of file i2c-designware-core.c.

#define ABRT_MASTER_DIS 11

Definition at line 120 of file i2c-designware-core.c.

#define ABRT_SBYTE_ACKDET 7

Definition at line 117 of file i2c-designware-core.c.

#define ABRT_SBYTE_NORSTRT 9

Definition at line 118 of file i2c-designware-core.c.

#define ABRT_TXDATA_NOACK 3

Definition at line 114 of file i2c-designware-core.c.

#define ARB_LOST 12

Definition at line 121 of file i2c-designware-core.c.

#define DW_IC_CLR_ACTIVITY 0x5c

Definition at line 61 of file i2c-designware-core.c.

#define DW_IC_CLR_GEN_CALL 0x68

Definition at line 64 of file i2c-designware-core.c.

#define DW_IC_CLR_INTR 0x40

Definition at line 54 of file i2c-designware-core.c.

#define DW_IC_CLR_RD_REQ 0x50

Definition at line 58 of file i2c-designware-core.c.

#define DW_IC_CLR_RX_DONE 0x58

Definition at line 60 of file i2c-designware-core.c.

#define DW_IC_CLR_RX_OVER 0x48

Definition at line 56 of file i2c-designware-core.c.

#define DW_IC_CLR_RX_UNDER 0x44

Definition at line 55 of file i2c-designware-core.c.

#define DW_IC_CLR_START_DET 0x64

Definition at line 63 of file i2c-designware-core.c.

#define DW_IC_CLR_STOP_DET 0x60

Definition at line 62 of file i2c-designware-core.c.

#define DW_IC_CLR_TX_ABRT 0x54

Definition at line 59 of file i2c-designware-core.c.

#define DW_IC_CLR_TX_OVER 0x4c

Definition at line 57 of file i2c-designware-core.c.

#define DW_IC_COMP_PARAM_1 0xf4

Definition at line 70 of file i2c-designware-core.c.

#define DW_IC_COMP_TYPE 0xfc

Definition at line 71 of file i2c-designware-core.c.

#define DW_IC_COMP_TYPE_VALUE 0x44570140

Definition at line 72 of file i2c-designware-core.c.

#define DW_IC_CON 0x0

Definition at line 42 of file i2c-designware-core.c.

#define DW_IC_DATA_CMD 0x10

Definition at line 44 of file i2c-designware-core.c.

#define DW_IC_ENABLE 0x6c

Definition at line 65 of file i2c-designware-core.c.

#define DW_IC_ERR_TX_ABRT 0x1

Definition at line 94 of file i2c-designware-core.c.

#define DW_IC_FS_SCL_HCNT 0x1c

Definition at line 47 of file i2c-designware-core.c.

#define DW_IC_FS_SCL_LCNT 0x20

Definition at line 48 of file i2c-designware-core.c.

#define DW_IC_INTR_ACTIVITY 0x100

Definition at line 82 of file i2c-designware-core.c.

#define DW_IC_INTR_DEFAULT_MASK

Value:

(DW_IC_INTR_RX_FULL | \
                     DW_IC_INTR_TX_EMPTY | \
                     DW_IC_INTR_TX_ABRT | \
                     DW_IC_INTR_STOP_DET)

Definition at line 87 of file i2c-designware-core.c.

#define DW_IC_INTR_GEN_CALL 0x800

Definition at line 85 of file i2c-designware-core.c.

#define DW_IC_INTR_MASK 0x30

Definition at line 50 of file i2c-designware-core.c.

#define DW_IC_INTR_RD_REQ 0x020

Definition at line 79 of file i2c-designware-core.c.

#define DW_IC_INTR_RX_DONE 0x080

Definition at line 81 of file i2c-designware-core.c.

#define DW_IC_INTR_RX_FULL 0x004

Definition at line 76 of file i2c-designware-core.c.

#define DW_IC_INTR_RX_OVER 0x002

Definition at line 75 of file i2c-designware-core.c.

#define DW_IC_INTR_RX_UNDER 0x001

Definition at line 74 of file i2c-designware-core.c.

#define DW_IC_INTR_START_DET 0x400

Definition at line 84 of file i2c-designware-core.c.

#define DW_IC_INTR_STAT 0x2c

Definition at line 49 of file i2c-designware-core.c.

#define DW_IC_INTR_STOP_DET 0x200

Definition at line 83 of file i2c-designware-core.c.

#define DW_IC_INTR_TX_ABRT 0x040

Definition at line 80 of file i2c-designware-core.c.

#define DW_IC_INTR_TX_EMPTY 0x010

Definition at line 78 of file i2c-designware-core.c.

#define DW_IC_INTR_TX_OVER 0x008

Definition at line 77 of file i2c-designware-core.c.

#define DW_IC_RAW_INTR_STAT 0x34

Definition at line 51 of file i2c-designware-core.c.

#define DW_IC_RX_TL 0x38

Definition at line 52 of file i2c-designware-core.c.

#define DW_IC_RXFLR 0x78

Definition at line 68 of file i2c-designware-core.c.

#define DW_IC_SS_SCL_HCNT 0x14

Definition at line 45 of file i2c-designware-core.c.

#define DW_IC_SS_SCL_LCNT 0x18

Definition at line 46 of file i2c-designware-core.c.

#define DW_IC_STATUS 0x70

Definition at line 66 of file i2c-designware-core.c.

#define DW_IC_STATUS_ACTIVITY 0x1

Definition at line 92 of file i2c-designware-core.c.

#define DW_IC_TAR 0x4

Definition at line 43 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_10ADDR1_NOACK (1UL << ABRT_10ADDR1_NOACK)

Definition at line 124 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_10ADDR2_NOACK (1UL << ABRT_10ADDR2_NOACK)

Definition at line 125 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_10B_RD_NORSTRT (1UL << ABRT_10B_RD_NORSTRT)

Definition at line 131 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_7B_ADDR_NOACK (1UL << ABRT_7B_ADDR_NOACK)

Definition at line 123 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_GCALL_NOACK (1UL << ABRT_GCALL_NOACK)

Definition at line 127 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_GCALL_READ (1UL << ABRT_GCALL_READ)

Definition at line 128 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_MASTER_DIS (1UL << ABRT_MASTER_DIS)

Definition at line 132 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_NOACK

Value:

(DW_IC_TX_ABRT_7B_ADDR_NOACK | \
                     DW_IC_TX_ABRT_10ADDR1_NOACK | \
                     DW_IC_TX_ABRT_10ADDR2_NOACK | \
                     DW_IC_TX_ABRT_TXDATA_NOACK | \
                     DW_IC_TX_ABRT_GCALL_NOACK)

Definition at line 135 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_SBYTE_ACKDET (1UL << ABRT_SBYTE_ACKDET)

Definition at line 129 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_SBYTE_NORSTRT (1UL << ABRT_SBYTE_NORSTRT)

Definition at line 130 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_SOURCE 0x80

Definition at line 69 of file i2c-designware-core.c.

#define DW_IC_TX_ABRT_TXDATA_NOACK (1UL << ABRT_TXDATA_NOACK)

Definition at line 126 of file i2c-designware-core.c.

#define DW_IC_TX_ARB_LOST (1UL << ARB_LOST)

Definition at line 133 of file i2c-designware-core.c.

#define DW_IC_TX_TL 0x3c

Definition at line 53 of file i2c-designware-core.c.

#define DW_IC_TXFLR 0x74

Definition at line 67 of file i2c-designware-core.c.

#define STATUS_IDLE 0x0

Definition at line 99 of file i2c-designware-core.c.

#define STATUS_READ_IN_PROGRESS 0x2

Definition at line 101 of file i2c-designware-core.c.

#define STATUS_WRITE_IN_PROGRESS 0x1

Definition at line 100 of file i2c-designware-core.c.

#define TIMEOUT 20 /* ms */

Definition at line 103 of file i2c-designware-core.c.

Function Documentation

u32 dw_readl	(	struct dw_i2c_dev *	dev,
		int	offset
	)

Definition at line 166 of file i2c-designware-core.c.

void dw_writel	(	struct dw_i2c_dev *	dev,
		u32	b,
		int	offset
	)

Definition at line 182 of file i2c-designware-core.c.

EXPORT_SYMBOL_GPL ( i2c_dw_init )

EXPORT_SYMBOL_GPL ( i2c_dw_xfer )

EXPORT_SYMBOL_GPL ( i2c_dw_func )

EXPORT_SYMBOL_GPL ( i2c_dw_isr )

EXPORT_SYMBOL_GPL ( i2c_dw_enable )

EXPORT_SYMBOL_GPL ( i2c_dw_is_enabled )

EXPORT_SYMBOL_GPL ( i2c_dw_disable )

EXPORT_SYMBOL_GPL ( i2c_dw_clear_int )

EXPORT_SYMBOL_GPL ( i2c_dw_disable_int )

EXPORT_SYMBOL_GPL ( i2c_dw_read_comp_param )

void i2c_dw_clear_int ( struct dw_i2c_dev * dev )

Definition at line 711 of file i2c-designware-core.c.

void i2c_dw_disable ( struct dw_i2c_dev * dev )

Definition at line 700 of file i2c-designware-core.c.

void i2c_dw_disable_int ( struct dw_i2c_dev * dev )

Definition at line 717 of file i2c-designware-core.c.

void i2c_dw_enable ( struct dw_i2c_dev * dev )

Definition at line 687 of file i2c-designware-core.c.

u32 i2c_dw_func ( struct i2c_adapter * adap )

Definition at line 575 of file i2c-designware-core.c.

int i2c_dw_init ( struct dw_i2c_dev * dev )

i2c_dw_init() - initialize the designware i2c master hardware : device private data

This functions configures and enables the I2C master. This function is called during I2C init function, and in case of timeout at run time.

Definition at line 258 of file i2c-designware-core.c.

u32 i2c_dw_is_enabled ( struct dw_i2c_dev * dev )

Definition at line 694 of file i2c-designware-core.c.

irqreturn_t i2c_dw_isr	(	int	this_irq,
		void *	dev_id
	)

Definition at line 641 of file i2c-designware-core.c.

u32 i2c_dw_read_comp_param ( struct dw_i2c_dev * dev )

Definition at line 723 of file i2c-designware-core.c.

int i2c_dw_xfer	(	struct i2c_adapter *	adap,
		struct i2c_msg	msgs[],
		int	num
	)

Definition at line 510 of file i2c-designware-core.c.

Macros

Functions

Macro Definition Documentation

Function Documentation