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@ -68,6 +68,10 @@ DECLARE_GLOBAL_DATA_PTR; |
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#define PRINTD(fmt,args...) |
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#endif |
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#if defined(CONFIG_I2C_MULTI_BUS) |
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static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = 0; |
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#endif /* CONFIG_I2C_MULTI_BUS */ |
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/*-----------------------------------------------------------------------
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* Local functions |
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*/ |
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@ -230,6 +234,38 @@ static int write_byte(uchar data) |
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return(nack); /* not a nack is an ack */ |
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} |
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#if defined(CONFIG_I2C_MULTI_BUS) |
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/*
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* Functions for multiple I2C bus handling |
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*/ |
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unsigned int i2c_get_bus_num(void) |
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{ |
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return i2c_bus_num; |
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} |
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int i2c_set_bus_num(unsigned int bus) |
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{ |
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if (bus >= CFG_MAX_I2C_BUS) |
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return -1; |
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i2c_bus_num = bus; |
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return 0; |
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} |
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/* TODO: add 100/400k switching */ |
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unsigned int i2c_get_bus_speed(void) |
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{ |
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return CFG_I2C_SPEED; |
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} |
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int i2c_set_bus_speed(unsigned int speed) |
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{ |
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if (speed != CFG_I2C_SPEED) |
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return -1; |
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return 0; |
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} |
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#endif |
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/*-----------------------------------------------------------------------
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* if ack == I2C_ACK, ACK the byte so can continue reading, else |
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