C++ (Cpp) sh_mobile_i2c_is_first_byte Examples

Example #1

File: i2c-sh_mobile.c Project: AlexShiLucky/linux

static int sh_mobile_i2c_isr_tx(struct sh_mobile_i2c_data *pd)
{
	unsigned char data;

	if (pd->pos == pd->msg->len) {
		i2c_op(pd, OP_TX_STOP, 0);
		return 1;
	}

	sh_mobile_i2c_get_data(pd, &data);
	i2c_op(pd, sh_mobile_i2c_is_first_byte(pd) ? OP_TX_FIRST : OP_TX, data);

	pd->pos++;
	return 0;
}

Example #2

File: i2c-sh_mobile.c Project: AlexShiLucky/linux

static int sh_mobile_i2c_isr_rx(struct sh_mobile_i2c_data *pd)
{
	unsigned char data;
	int real_pos;

	do {
		if (pd->pos <= -1) {
			sh_mobile_i2c_get_data(pd, &data);

			if (sh_mobile_i2c_is_first_byte(pd))
				i2c_op(pd, OP_TX_FIRST, data);
			else
				i2c_op(pd, OP_TX, data);
			break;
		}

		if (pd->pos == 0) {
			i2c_op(pd, OP_TX_TO_RX, 0);
			break;
		}

		real_pos = pd->pos - 2;

		if (pd->pos == pd->msg->len) {
			if (pd->stop_after_dma) {
				/* Simulate PIO end condition after DMA transfer */
				i2c_op(pd, OP_RX_STOP, 0);
				pd->pos++;
				break;
			}

			if (real_pos < 0) {
				i2c_op(pd, OP_RX_STOP, 0);
				break;
			}
			data = i2c_op(pd, OP_RX_STOP_DATA, 0);
		} else if (real_pos >= 0) {
			data = i2c_op(pd, OP_RX, 0);
		}

		if (real_pos >= 0)
			pd->msg->buf[real_pos] = data;
	} while (0);

	pd->pos++;
	return pd->pos == (pd->msg->len + 2);
}

Example #3

File: i2c-sh_mobile.c Project: ANFS/ANFS-kernel

static int sh_mobile_i2c_isr_tx(struct sh_mobile_i2c_data *pd)
{
	unsigned char data;

	if (pd->pos == pd->msg->len)
		return 1;

	sh_mobile_i2c_get_data(pd, &data);

	if (sh_mobile_i2c_is_last_byte(pd))
		i2c_op(pd, OP_TX_STOP, data);
	else if (sh_mobile_i2c_is_first_byte(pd))
		i2c_op(pd, OP_TX_FIRST, data);
	else
		i2c_op(pd, OP_TX, data);

	pd->pos++;
	return 0;
}