u8 w1_touch_bit(struct w1_master *dev, int bit) { if (dev->bus_master->touch_bit) return dev->bus_master->touch_bit(dev->bus_master->data, bit); else return w1_read_bit(dev); }
/** * w1_touch_bit() - Generates a write-0 or write-1 cycle and samples the level. * @dev: the master device * @bit: 0 - write a 0, 1 - write a 0 read the level */ static u8 w1_touch_bit(struct w1_master *dev, int bit) { if (dev->bus_master->touch_bit) return dev->bus_master->touch_bit(dev->bus_master->data, bit); else if (bit) return w1_read_bit(dev); else { w1_write_bit(dev, 0); return 0; } }
u8 w1_read_8(struct w1_master * dev) { int i; u8 res = 0; if (dev->bus_master->read_byte) res = dev->bus_master->read_byte(dev->bus_master->data); else for (i = 0; i < 8; ++i) res |= (w1_read_bit(dev) << i); return res; }