mc33972.h File Reference

Data Structures
struct	mc33972_config

Functions
int	mc33972_add (brain_pin_e base, unsigned int index, const struct mc33972_config *cfg)
	MC33972 driver add.

Function Documentation

mc33972_add()

int mc33972_add	(	brain_pin_e	base,
		unsigned int	index,
		const struct mc33972_config *	cfg
	)

MC33972 driver add.

Checks for valid config

Definition at line 414 of file mc33972.cpp.

{
    /* no config or no such chip */
    if ((!cfg) || (!cfg->spi_bus) || (index >= BOARD_MC33972_COUNT))
        return -1;
 
    /* check for valid cs.
     * TODO: remove this check? CS can be driven by SPI */
    if (!cfg->spi_config.ssport) {
        return -1;
    }
 
    Mc33972& chip = chips[index];
 
    /* already initted? */
    if (chip.cfg != NULL)
        return -1;
 
    chip.cfg = cfg;
    chip.i_state = 0;
    chip.drv_state = MC33972_WAIT_INIT;
 
    /* register, return gpio chip base */
    return gpiochip_register(base, DRIVER_NAME, chip, MC33972_INPUTS);
}

Referenced by initSmartGpio().

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