65 static TEE_Result atmel_i2c_send_one_byte(struct atmel_i2c *i2c, uint8_t byte)  in atmel_i2c_send_one_byte()  argument
69 	io_write32(i2c->base + TWIHS_THR, byte);  in atmel_i2c_send_one_byte()
72 		sr = io_read32(i2c->base + TWIHS_SR);  in atmel_i2c_send_one_byte()
84 static void atmel_i2c_wait_txcomp(struct atmel_i2c *i2c)  in atmel_i2c_wait_txcomp()  argument
89 		sr = io_read32(i2c->base + TWIHS_SR);  in atmel_i2c_wait_txcomp()
95 static void atmel_i2c_send_start(struct atmel_i2c *i2c)  in atmel_i2c_send_start()  argument
97 	io_write32(i2c->base + TWIHS_CR, TWIHS_CR_START);  in atmel_i2c_send_start()
100 static void atmel_i2c_send_stop(struct atmel_i2c *i2c)  in atmel_i2c_send_stop()  argument
102 	io_write32(i2c->base + TWIHS_CR, TWIHS_CR_STOP);  in atmel_i2c_send_stop()
110 	struct atmel_i2c *i2c = atmel_i2c_from_i2c_ctrl(i2c_dev->ctrl);  in atmel_i2c_write_data_no_stop()  local
113 	io_write32(i2c->base + TWIHS_MMR, mmr);  in atmel_i2c_write_data_no_stop()
116 		res = atmel_i2c_send_one_byte(i2c, buf[i]);  in atmel_i2c_write_data_no_stop()
128 	struct atmel_i2c *i2c = atmel_i2c_from_i2c_ctrl(i2c_dev->ctrl);  in atmel_i2c_write_data()  local
134 	atmel_i2c_send_stop(i2c);  in atmel_i2c_write_data()
135 	atmel_i2c_wait_txcomp(i2c);  in atmel_i2c_write_data()
140 static TEE_Result atmel_i2c_recv_one_byte(struct atmel_i2c *i2c,  in atmel_i2c_recv_one_byte()  argument
146 		sr = io_read32(i2c->base + TWIHS_SR);  in atmel_i2c_recv_one_byte()
155 	*byte = io_read32(i2c->base + TWIHS_RHR);  in atmel_i2c_recv_one_byte()
165 	struct atmel_i2c *i2c = atmel_i2c_from_i2c_ctrl(i2c_dev->ctrl);  in atmel_i2c_read_data()  local
169 	io_write32(i2c->base + TWIHS_MMR, mmr);  in atmel_i2c_read_data()
171 	atmel_i2c_send_start(i2c);  in atmel_i2c_read_data()
175 			atmel_i2c_send_stop(i2c);  in atmel_i2c_read_data()
177 		res = atmel_i2c_recv_one_byte(i2c, &buf[i]);  in atmel_i2c_read_data()
182 	atmel_i2c_wait_txcomp(i2c);  in atmel_i2c_read_data()
215 static TEE_Result atmel_i2c_init_clk(struct atmel_i2c *i2c)  in atmel_i2c_init_clk()  argument
222 	unsigned long clk = clk_get_rate(i2c->clk);  in atmel_i2c_init_clk()
240 	if (i2c->sda_hold_time) {  in atmel_i2c_init_clk()
242 		hold = UDIV_ROUND_NEAREST(i2c->sda_hold_time * clk, 1000000000);  in atmel_i2c_init_clk()
256 	io_write32(i2c->base + TWIHS_CWGR, cwgr);  in atmel_i2c_init_clk()
261 static TEE_Result atmel_i2c_init_hw(struct atmel_i2c *i2c)  in atmel_i2c_init_hw()  argument
264 	io_write32(i2c->base + TWIHS_WPMR, TWIHS_WPMR_WPKEY);  in atmel_i2c_init_hw()
267 	io_write32(i2c->base + TWIHS_CR, TWIHS_CR_SWRST);  in atmel_i2c_init_hw()
269 	io_write32(i2c->base + TWIHS_CR, TWIHS_CR_SVDIS);  in atmel_i2c_init_hw()
270 	io_write32(i2c->base + TWIHS_CR, TWIHS_CR_MSEN);  in atmel_i2c_init_hw()
272 	return atmel_i2c_init_clk(i2c);  in atmel_i2c_init_hw()