RTEMS | Add the support for i2c driver in the aarch64/raspberrypi bsp (!363)

[Shaunak Datar (@skdatar)]

Shaunak Datar commented on a discussion on bsps/aarch64/raspberrypi/i2c/raspberrypi-i2c.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/363#note_121835

 > +
 > +static int rpi_i2c_transfer(i2c_bus *base, i2c_msg *msgs, uint32_t msg_count)
 > +{
 > +    raspberrypi_i2c_bus *bus = (raspberrypi_i2c_bus *)base;
 > +    int rv = 0;
 > +    uint32_t i;
 > +
 > +    for (i = 0; i < msg_count; ++i)
 > +    {
 > +        if (msgs[i].flags & I2C_M_RECV_LEN)
 > +        {
 > +            return RTEMS_INVALID_NUMBER;
 > +        }
 > +    }
 > +
 > +    for (i = 0; i < msg_count; i++)

Technically the loops can be merged but because one does validation of the input and the other does the actual processing, they have been kept separate. Do you want me to merge them?

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/363#note_121835
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