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i2c: merge all i2c_reg_read() and i2c_reg_write() into inline functions 

All implementations of the functions i2c_reg_read() and
i2c_reg_write() are identical. We can save space and simplify the
code by converting these functions into inlines and putting them in
i2c.h.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-By: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Timur Tabi 2008-12-03 11:28:30 -06:00 committed by Wolfgang Denk
parent e39cd81c44
commit ecf5f077c8
14 changed files with 60 additions and 231 deletions
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14
cpu/arm920t/at91rm9200/i2c.c
View File

@ -189,20 +189,6 @@ i2c_init(int speed, int slaveaddr)
return;
}
uchar i2c_reg_read(uchar i2c_addr, uchar reg)
{
unsigned char buf;
i2c_read(i2c_addr, reg, 1, &buf, 1);
return(buf);
}
void i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
{
i2c_write(i2c_addr, reg, 1, &val, 1);
}
int i2c_set_bus_speed(unsigned int speed)
{
return -1;

17
cpu/arm926ejs/davinci/i2c.c
View File

@ -331,21 +331,4 @@ int i2c_write(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len)
return(0);
}
u_int8_t i2c_reg_read(u_int8_t chip, u_int8_t reg)
{
u_int8_t tmp;
i2c_read(chip, reg, 1, &tmp, 1);
return(tmp);
}
void i2c_reg_write(u_int8_t chip, u_int8_t reg, u_int8_t val)
{
u_int8_t tmp;
i2c_write(chip, reg, 1, &tmp, 1);
}
#endif /* CONFIG_DRIVER_DAVINCI_I2C */

16
cpu/blackfin/i2c.c
View File

@ -425,20 +425,4 @@ int i2c_write(uchar chip, uint addr, int alen, uchar * buffer, int len)
}
uchar i2c_reg_read(uchar chip, uchar reg)
{
uchar buf;
PRINTD("i2c_reg_read: chip=0x%02x, reg=0x%02x\n", chip, reg);
i2c_read(chip, reg, 0, &buf, 1);
return (buf);
}
void i2c_reg_write(uchar chip, uchar reg, uchar val)
{
PRINTD("i2c_reg_write: chip=0x%02x, reg=0x%02x, val=0x%02x\n", chip,
reg, val);
i2c_write(chip, reg, 0, &val, 1);
}
#endif /* CONFIG_HARD_I2C */

17
cpu/mpc512x/i2c.c
View File

@ -382,23 +382,6 @@ Done:
return ret;
}
uchar i2c_reg_read (uchar chip, uchar reg)
{
uchar buf;
i2c_read (chip, reg, 1, &buf, 1);
return buf;
}
void i2c_reg_write (uchar chip, uchar reg, uchar val)
{
i2c_write (chip, reg, 1, &val, 1);
return;
}
int i2c_set_bus_num (unsigned int bus)
{
if (bus >= I2C_BUS_CNT) {

16
cpu/mpc5xxx/i2c.c
View File

@ -380,20 +380,4 @@ Done:
return ret;
}
uchar i2c_reg_read(uchar chip, uchar reg)
{
uchar buf;
i2c_read(chip, reg, 1, &buf, 1);
return buf;
}
void i2c_reg_write(uchar chip, uchar reg, uchar val)
{
i2c_write(chip, reg, 1, &val, 1);
return;
}
#endif /* CONFIG_HARD_I2C */

16
cpu/mpc8220/i2c.c
View File

@ -387,20 +387,4 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buf, int len)
return ret;
}
uchar i2c_reg_read (uchar chip, uchar reg)
{
uchar buf;
i2c_read (chip, reg, 1, &buf, 1);
return buf;
}
void i2c_reg_write (uchar chip, uchar reg, uchar val)
{
i2c_write (chip, reg, 1, &val, 1);
return;
}
#endif /* CONFIG_HARD_I2C */

14
cpu/mpc824x/drivers/i2c/i2c.c
View File

@ -267,18 +267,4 @@ int i2c_probe (uchar chip)
return i2c_read (chip, 0, 1, (uchar *) &tmp, 1);
}
uchar i2c_reg_read (uchar i2c_addr, uchar reg)
{
uchar buf[1];
i2c_read (i2c_addr, reg, 1, buf, 1);
return (buf[0]);
}
void i2c_reg_write (uchar i2c_addr, uchar reg, uchar val)
{
i2c_write (i2c_addr, reg, 1, &val, 1);
}
#endif /* CONFIG_HARD_I2C */

16
cpu/mpc8260/i2c.c
View File

@ -753,22 +753,6 @@ i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
return 0;
}
uchar
i2c_reg_read(uchar chip, uchar reg)
{
uchar buf;
i2c_read(chip, reg, 1, &buf, 1);
return (buf);
}
void
i2c_reg_write(uchar chip, uchar reg, uchar val)
{
i2c_write(chip, reg, 1, &val, 1);
}
#if defined(CONFIG_I2C_MULTI_BUS)
/*
* Functions for multiple I2C bus handling

33
cpu/mpc8xx/i2c.c
View File

@ -42,19 +42,6 @@ DECLARE_GLOBAL_DATA_PTR;
/* define to enable debug messages */
#undef DEBUG_I2C
/*-----------------------------------------------------------------------
* Set default values
*/
#ifndef CONFIG_SYS_I2C_SPEED
#define CONFIG_SYS_I2C_SPEED 50000
#endif
#ifndef CONFIG_SYS_I2C_SLAVE
#define CONFIG_SYS_I2C_SLAVE 0xFE
#endif
/*-----------------------------------------------------------------------
*/
/* tx/rx timeout (we need the i2c early, so we don't use get_timer()) */
#define TOUT_LOOP 1000000
@ -717,24 +704,4 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
return 0;
}
uchar
i2c_reg_read(uchar i2c_addr, uchar reg)
{
uchar buf;
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
i2c_read(i2c_addr, reg, 1, &buf, 1);
return (buf);
}
void
i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
{
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
i2c_write(i2c_addr, reg, 1, &val, 1);
}
#endif /* CONFIG_HARD_I2C */

20
cpu/ppc4xx/i2c.c
View File

@ -419,26 +419,6 @@ int i2c_write(uchar chip, uint addr, int alen, uchar * buffer, int len)
return (i2c_transfer(0, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0);
}
/*-----------------------------------------------------------------------
* Read a register
*/
uchar i2c_reg_read(uchar i2c_addr, uchar reg)
{
uchar buf;
i2c_read(i2c_addr, reg, 1, &buf, 1);
return (buf);
}
/*-----------------------------------------------------------------------
* Write a register
*/
void i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
{
i2c_write(i2c_addr, reg, 1, &val, 1);
}
#if defined(CONFIG_I2C_MULTI_BUS)
/*
* Functions for multiple I2C bus handling

15
cpu/pxa/i2c.c
View File

@ -455,19 +455,4 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
}
uchar i2c_reg_read (uchar chip, uchar reg)
{
uchar buf;
PRINTD(("i2c_reg_read(chip=0x%02x, reg=0x%02x)\n",chip,reg));
i2c_read(chip, reg, 1, &buf, 1);
return (buf);
}
void i2c_reg_write(uchar chip, uchar reg, uchar val)
{
PRINTD(("i2c_reg_write(chip=0x%02x, reg=0x%02x, val=0x%02x)\n",chip,reg,val));
i2c_write(chip, reg, 1, &val, 1);
}
#endif /* CONFIG_HARD_I2C */

16
drivers/i2c/fsl_i2c.c
View File

@ -367,22 +367,6 @@ i2c_probe(uchar chip)
return i2c_read(chip, 0, 0, NULL, 0);
}
uchar
i2c_reg_read(uchar i2c_addr, uchar reg)
{
uchar buf[1];
i2c_read(i2c_addr, reg, 1, buf, 1);
return buf[0];
}
void
i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
{
i2c_write(i2c_addr, reg, 1, &val, 1);
}
int i2c_set_bus_num(unsigned int bus)
{
#ifdef CONFIG_SYS_I2C2_OFFSET

19
drivers/i2c/soft_i2c.c
View File

@ -435,22 +435,3 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
return(failures);
}
/*-----------------------------------------------------------------------
* Read a register
*/
uchar i2c_reg_read(uchar i2c_addr, uchar reg)
{
uchar buf;
i2c_read(i2c_addr, reg, 1, &buf, 1);
return(buf);
}
/*-----------------------------------------------------------------------
* Write a register
*/
void i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
{
i2c_write(i2c_addr, reg, 1, &val, 1);
}

62
include/i2c.h
View File

@ -76,6 +76,20 @@
# define I2C_SOFT_DECLARATIONS
# endif
#endif
#ifdef CONFIG_8xx
/* Set default values for the I2C bus speed and slave address on 8xx. In the
* future, we'll define these in all 8xx board config files.
*/
#ifndef CONFIG_SYS_I2C_SPEED
#define CONFIG_SYS_I2C_SPEED 50000
#endif
#ifndef CONFIG_SYS_I2C_SLAVE
#define CONFIG_SYS_I2C_SLAVE 0xFE
#endif
#endif
/*
* Initialization, must be called once on start up, may be called
* repeatedly to change the speed and slave addresses.
@ -132,8 +146,52 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len);
/*
* Utility routines to read/write registers.
*/
uchar i2c_reg_read (uchar chip, uchar reg);
void i2c_reg_write(uchar chip, uchar reg, uchar val);
static inline u8 i2c_reg_read(u8 addr, u8 reg)
{
u8 buf;
#ifdef CONFIG_8xx
/* MPC8xx needs this. Maybe one day we can get rid of it. */
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#ifdef DEBUG
printf("%s: addr=0x%02x, reg=0x%02x\n", __func__, addr, reg);
#endif
#ifdef CONFIG_BLACKFIN
/* This ifdef will become unneccessary in a future version of the
* blackfin I2C driver.
*/
i2c_read(addr, reg, 0, &buf, 1);
#else
i2c_read(addr, reg, 1, &buf, 1);
#endif
return buf;
}
static inline void i2c_reg_write(u8 addr, u8 reg, u8 val)
{
#ifdef CONFIG_8xx
/* MPC8xx needs this. Maybe one day we can get rid of it. */
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#ifdef DEBUG
printf("%s: addr=0x%02x, reg=0x%02x, val=0x%02x\n",
__func__, addr, reg, val);
#endif
#ifdef CONFIG_BLACKFIN
/* This ifdef will become unneccessary in a future version of the
* blackfin I2C driver.
*/
i2c_write(addr, reg, 0, &val, 1);
#else
i2c_write(addr, reg, 1, &val, 1);
#endif
}
/*
* Functions for setting the current I2C bus and its speed