37 static int i2c_gpio_sda_get(struct gpio_desc *sda)  in i2c_gpio_sda_get()  argument
39 	return dm_gpio_get_value(sda);  in i2c_gpio_sda_get()
42 static void i2c_gpio_sda_set(struct gpio_desc *sda, int bit)  in i2c_gpio_sda_set()  argument
45 		dm_gpio_set_dir_flags(sda, GPIOD_IS_IN);  in i2c_gpio_sda_set()
47 		dm_gpio_set_dir_flags(sda, GPIOD_IS_OUT);  in i2c_gpio_sda_set()
59 static void i2c_gpio_write_bit(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_write_bit()  argument
64 	i2c_gpio_sda_set(sda, bit);  in i2c_gpio_write_bit()
70 static int i2c_gpio_read_bit(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_read_bit()  argument
77 	value = i2c_gpio_sda_get(sda);  in i2c_gpio_read_bit()
86 static void i2c_gpio_send_start(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_send_start()  argument
90 	i2c_gpio_sda_set(sda, 1);  in i2c_gpio_send_start()
94 	i2c_gpio_sda_set(sda, 0);  in i2c_gpio_send_start()
99 static void i2c_gpio_send_stop(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_send_stop()  argument
104 	i2c_gpio_sda_set(sda, 0);  in i2c_gpio_send_stop()
108 	i2c_gpio_sda_set(sda, 1);  in i2c_gpio_send_stop()
113 static void i2c_gpio_send_ack(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_send_ack()  argument
116 	i2c_gpio_write_bit(scl, sda, delay, ack);  in i2c_gpio_send_ack()
126 static void i2c_gpio_send_reset(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_send_reset()  argument
132 		i2c_gpio_write_bit(scl, sda, delay, 1);  in i2c_gpio_send_reset()
134 	i2c_gpio_send_stop(scl, sda, delay);  in i2c_gpio_send_reset()
138 static void i2c_gpio_sda_high(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_sda_high()  argument
143 	i2c_gpio_sda_set(sda, 1);  in i2c_gpio_sda_high()
148 static int i2c_gpio_write_byte(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_write_byte()  argument
155 		i2c_gpio_write_bit(scl, sda, delay, data & 0x80);  in i2c_gpio_write_byte()
162 	i2c_gpio_sda_high(scl, sda, delay);  in i2c_gpio_write_byte()
163 	nack = i2c_gpio_read_bit(scl, sda, delay);  in i2c_gpio_write_byte()
172 static uchar i2c_gpio_read_byte(struct gpio_desc *scl, struct gpio_desc *sda,  in i2c_gpio_read_byte()  argument
178 	i2c_gpio_sda_high(scl, sda, delay);  in i2c_gpio_read_byte()
182 		data |= i2c_gpio_read_bit(scl, sda, delay);  in i2c_gpio_read_byte()
184 	i2c_gpio_send_ack(scl, sda, delay, ack);  in i2c_gpio_read_byte()
190 int i2c_send_slave_addr(struct gpio_desc *scl, struct gpio_desc *sda, int delay,  in i2c_send_slave_addr()  argument
193 	i2c_gpio_send_start(scl, sda, delay);  in i2c_send_slave_addr()
195 	if (i2c_gpio_write_byte(scl, sda, delay, chip)) {  in i2c_send_slave_addr()
196 		i2c_gpio_send_stop(scl, sda, delay);  in i2c_send_slave_addr()
208 	struct gpio_desc *sda = &bus->gpios[PIN_SDA];  in i2c_gpio_write_data()  local
214 	if (i2c_send_slave_addr(scl, sda, delay, chip << 1)) {  in i2c_gpio_write_data()
220 		if (i2c_gpio_write_byte(scl, sda, delay, *buffer++))  in i2c_gpio_write_data()
225 		i2c_gpio_send_stop(scl, sda, delay);  in i2c_gpio_write_data()
229 	if (i2c_send_slave_addr(scl, sda, delay, (chip << 1) | 0x1)) {  in i2c_gpio_write_data()
241 	struct gpio_desc *sda = &bus->gpios[PIN_SDA];  in i2c_gpio_read_data()  local
247 		*buffer++ = i2c_gpio_read_byte(scl, sda, delay, len == 0);  in i2c_gpio_read_data()
249 	i2c_gpio_send_stop(scl, sda, delay);  in i2c_gpio_read_data()
281 	struct gpio_desc *sda = &bus->gpios[PIN_SDA];  in i2c_gpio_probe()  local
285 	i2c_gpio_send_start(scl, sda, delay);  in i2c_gpio_probe()
286 	ret = i2c_gpio_write_byte(scl, sda, delay, (chip << 1) | 0);  in i2c_gpio_probe()
287 	i2c_gpio_send_stop(scl, sda, delay);  in i2c_gpio_probe()
299 	struct gpio_desc *sda = &bus->gpios[PIN_SDA];  in i2c_gpio_set_bus_speed()  local
303 	i2c_gpio_send_reset(scl, sda, bus->udelay);  in i2c_gpio_set_bus_speed()