diff options
| author | Heiko Schocher <hs@denx.de> | 2008-10-15 09:35:26 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-10-18 21:54:01 +0200 |
| commit | 98aed379586a155292efbf3209356836584b601c (patch) | |
| tree | b6ed51c21c915d6c0315febb0bf6b787dcc38ed8 | |
| parent | 799b784aa00cb03a352847ab9f9acdde79b72d21 (diff) | |
soft_i2c: prevent compiler warnings if driver does not use CPU Pins.
This patch fixes the following warnings, when using
the soft_i2c driver using no CPU pins on MPC82xx or MPC8xx
systems:
soft_i2c.c: In function 'send_reset':
soft_i2c.c:93: warning: unused variable 'immr'
soft_i2c.c: In function 'send_start':
soft_i2c.c:124: warning: unused variable 'immr'
soft_i2c.c: In function 'send_stop':
soft_i2c.c:146: warning: unused variable 'immr'
soft_i2c.c: In function 'send_ack':
soft_i2c.c:171: warning: unused variable 'immr'
soft_i2c.c: In function 'write_byte':
soft_i2c.c:196: warning: unused variable 'immr'
soft_i2c.c: In function 'read_byte':
soft_i2c.c:244: warning: unused variable 'immr'
Signed-off-by: Heiko Schocher <hs@denx.de>
| -rw-r--r-- | drivers/i2c/soft_i2c.c | 43 | ||||
| -rw-r--r-- | include/i2c.h | 9 |
2 files changed, 15 insertions, 37 deletions
diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c index 57736da4248..19c364b136e 100644 --- a/drivers/i2c/soft_i2c.c +++ b/drivers/i2c/soft_i2c.c @@ -82,7 +82,6 @@ static void send_ack (int); static int write_byte (uchar byte); static uchar read_byte (int); - /*----------------------------------------------------------------------- * Send a reset sequence consisting of 9 clocks with the data signal high * to clock any confused device back into an idle state. Also send a @@ -90,12 +89,7 @@ static uchar read_byte (int); */ static void send_reset(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int j; I2C_SCL(1); @@ -121,12 +115,7 @@ static void send_reset(void) */ static void send_start(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_DELAY; I2C_SDA(1); @@ -143,12 +132,7 @@ static void send_start(void) */ static void send_stop(void) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_SCL(0); I2C_DELAY; @@ -168,12 +152,7 @@ static void send_stop(void) */ static void send_ack(int ack) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ I2C_SCL(0); I2C_DELAY; @@ -193,12 +172,7 @@ static void send_ack(int ack) */ static int write_byte(uchar data) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int j; int nack; @@ -273,12 +247,7 @@ int i2c_set_bus_speed(unsigned int speed) */ static uchar read_byte(int ack) { -#ifdef CONFIG_MPC8260 - volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); -#endif -#ifdef CONFIG_8xx - volatile immap_t *immr = (immap_t *)CFG_IMMR; -#endif + I2C_SOFT_DECLARATIONS /* intentional without ';' */ int data; int j; diff --git a/include/i2c.h b/include/i2c.h index a51c16464ff..a6e797a3835 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -67,6 +67,15 @@ #define CFG_SPD_BUS_NUM 0 #endif +#ifndef I2C_SOFT_DECLARATIONS +# if defined(CONFIG_MPC8260) +# define I2C_SOFT_DECLARATIONS volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT); +# elif defined(CONFIG_8xx) +# define I2C_SOFT_DECLARATIONS volatile immap_t *immr = (immap_t *)CFG_IMMR; +# else +# define I2C_SOFT_DECLARATIONS +# endif +#endif /* * Initialization, must be called once on start up, may be called * repeatedly to change the speed and slave addresses. |