diff options
Diffstat (limited to 'src/gfx/i2c_gpio.c')
| -rw-r--r-- | src/gfx/i2c_gpio.c | 52 |
1 files changed, 27 insertions, 25 deletions
diff --git a/src/gfx/i2c_gpio.c b/src/gfx/i2c_gpio.c index 7614cd0..9774a8d 100644 --- a/src/gfx/i2c_gpio.c +++ b/src/gfx/i2c_gpio.c @@ -35,11 +35,11 @@ int gpio_data = 0; static int g_initialized = 0; -#define I2CWRITE 0x00 /* Write address */ -#define I2CREAD 0x01 /* Read address */ +#define I2CWRITE 0x00 /* Write address */ +#define I2CREAD 0x01 /* Read address */ -#define I2CACK 0x00 /* Ack value */ -#define I2CNACK 0x01 /* Not - ack value */ +#define I2CACK 0x00 /* Ack value */ +#define I2CNACK 0x01 /* Not - ack value */ #define CS5530_ID (0x80000000 | (0x00<<16) | (0x12<<11) | (0<<8) | 0x00) #define CS5530_GPIO (0x80000000 | (0x00<<16) | (0x12<<11) | (0<<8) | 0x90) @@ -52,9 +52,9 @@ int I2C_init(void); void I2C_cleanup(void); int I2C_Read(unsigned char address, unsigned int reg, unsigned long *p_value, - unsigned int bytes); + unsigned int bytes); int I2C_Write(unsigned char address, unsigned int reg, unsigned long value, - unsigned int bytes); + unsigned int bytes); int I2CAL_init(void); void I2CAL_cleanup(void); @@ -123,11 +123,11 @@ gfx_i2c_select_gpio(int clock, int data) #if GFX_I2C_DYNAMIC int gpio_i2c_write(unsigned char busnum, unsigned char address, unsigned char reg, - unsigned char bytes, unsigned char *value) + unsigned char bytes, unsigned char *value) #else int gfx_i2c_write(unsigned char busnum, unsigned char address, unsigned char reg, - unsigned char bytes, unsigned char *value) + unsigned char bytes, unsigned char *value) #endif { /* ### ADD ### CODE TO WRITE BYTE TO I2B BUS */ @@ -139,13 +139,13 @@ gfx_i2c_write(unsigned char busnum, unsigned char address, unsigned char reg, /* The address is shifted left by one to make room for Read/Write * bit */ SendI2CStart(); - SendI2CData((char)((address << 1) | I2CWRITE)); + SendI2CData((char) ((address << 1) | I2CWRITE)); if (!ReceiveI2CAck()) { SendI2CStop(); gfx_delay_milliseconds(10); continue; } - SendI2CData((unsigned char)reg); + SendI2CData((unsigned char) reg); if (!ReceiveI2CAck()) { SendI2CStop(); gfx_delay_milliseconds(10); @@ -189,11 +189,11 @@ gfx_i2c_write(unsigned char busnum, unsigned char address, unsigned char reg, #if GFX_I2C_DYNAMIC int gpio_i2c_read(unsigned char busnum, unsigned char address, unsigned char reg, - unsigned char bytes, unsigned char *p_value) + unsigned char bytes, unsigned char *p_value) #else int gfx_i2c_read(unsigned char busnum, unsigned char address, unsigned char reg, - unsigned char bytes, unsigned char *p_value) + unsigned char bytes, unsigned char *p_value) #endif { /* ### ADD ### CODE TO WRITE BYTE TO I2B BUS */ @@ -209,18 +209,18 @@ gfx_i2c_read(unsigned char busnum, unsigned char address, unsigned char reg, /* The address is shifted left by one to make room for Read/Write * bit */ SendI2CStart(); - SendI2CData((char)((address << 1) | I2CWRITE)); + SendI2CData((char) ((address << 1) | I2CWRITE)); if (!ReceiveI2CAck()) { SendI2CStop(); gfx_delay_milliseconds(10); continue; } - SendI2CData((unsigned char)(reg & 0xFF)); + SendI2CData((unsigned char) (reg & 0xFF)); SendI2CNack(); /* read the first data byte. */ SendI2CStart(); - SendI2CData((char)((address << 1) | I2CREAD)); + SendI2CData((char) ((address << 1) | I2CREAD)); if (!ReceiveI2CAck()) { SendI2CStop(); gfx_delay_milliseconds(10); @@ -490,7 +490,7 @@ I2CAL_init(void) return 1; l_reg = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)l_reg; + reg = (unsigned short) l_reg; /* both outputs, both high. */ reg |= (SDADIR | SCLDIR | SDA | SCL); @@ -525,11 +525,12 @@ I2CAL_output_clock(int inState) unsigned long value; value = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)value; + reg = (unsigned short) value; - if (inState) { /* write a 1. */ + if (inState) { /* write a 1. */ reg |= SCL; - } else { /* write a 0. */ + } + else { /* write a 0. */ reg &= ~SCL; } @@ -554,11 +555,12 @@ I2CAL_output_data(int inState) unsigned long value; value = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)value; + reg = (unsigned short) value; - if (inState) { /* write a 1. */ + if (inState) { /* write a 1. */ reg |= SDA; - } else { + } + else { /* write a 0. */ reg &= ~SDA; } @@ -583,7 +585,7 @@ I2CAL_input_data(void) unsigned long value; value = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)value; + reg = (unsigned short) value; if (reg & SDA) return 1; @@ -605,7 +607,7 @@ I2CAL_set_data_for_input(void) unsigned long value; value = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)value; + reg = (unsigned short) value; reg &= ~SDADIR; @@ -628,7 +630,7 @@ I2CAL_set_data_for_output(void) unsigned long value; value = gfx_pci_config_read(CS5530_GPIO); - reg = (unsigned short)value; + reg = (unsigned short) value; reg |= SDADIR; value = reg; |