22 	struct ls_i2c *ccsr_i2c = (void *)nxp_i2c_addr;  in i2c_init()  local
26 	i2c_out(&ccsr_i2c->cr, I2C_CR_DIS);  in i2c_init()
27 	i2c_out(&ccsr_i2c->fd, I2C_FD_CONSERV);  in i2c_init()
28 	i2c_out(&ccsr_i2c->sr, I2C_SR_RST);  in i2c_init()
29 	i2c_out(&ccsr_i2c->cr, I2C_CR_EN);  in i2c_init()
32 static int wait_for_state(struct ls_i2c *ccsr_i2c,  in wait_for_state()  argument
40 		sr = i2c_in(&ccsr_i2c->sr);  in wait_for_state()
42 			i2c_out(&ccsr_i2c->sr, sr);  in wait_for_state()
60 static int tx_byte(struct ls_i2c *ccsr_i2c, unsigned char c)  in tx_byte()  argument
64 	i2c_out(&ccsr_i2c->sr, I2C_SR_IF);  in tx_byte()
65 	i2c_out(&ccsr_i2c->dr, c);  in tx_byte()
66 	ret = wait_for_state(ccsr_i2c, I2C_SR_IF, I2C_SR_IF);  in tx_byte()
79 static int gen_stop(struct ls_i2c *ccsr_i2c)  in gen_stop()  argument
84 	cr = i2c_in(&ccsr_i2c->cr);  in gen_stop()
86 	i2c_out(&ccsr_i2c->cr, cr);  in gen_stop()
87 	ret = wait_for_state(ccsr_i2c, I2C_SR_IDLE, I2C_SR_BB);  in gen_stop()
94 static int i2c_write_addr(struct ls_i2c *ccsr_i2c, unsigned char chip,  in i2c_write_addr()  argument
105 	if (i2c_in(&ccsr_i2c->ad) == (chip << 1)) {  in i2c_write_addr()
109 	i2c_out(&ccsr_i2c->sr, I2C_SR_IF);  in i2c_write_addr()
110 	ret = wait_for_state(ccsr_i2c, I2C_SR_IDLE, I2C_SR_BB);  in i2c_write_addr()
115 	cr = i2c_in(&ccsr_i2c->cr);  in i2c_write_addr()
117 	i2c_out(&ccsr_i2c->cr, cr);  in i2c_write_addr()
118 	ret = wait_for_state(ccsr_i2c, I2C_SR_BB, I2C_SR_BB);  in i2c_write_addr()
125 	i2c_out(&ccsr_i2c->cr, cr);  in i2c_write_addr()
126 	ret = tx_byte(ccsr_i2c, chip << 1);  in i2c_write_addr()
128 		gen_stop(ccsr_i2c);  in i2c_write_addr()
134 		ret = tx_byte(ccsr_i2c, (addr >> (alen << 3)) & 0xff);  in i2c_write_addr()
136 			gen_stop(ccsr_i2c);  in i2c_write_addr()
144 static int read_data(struct ls_i2c *ccsr_i2c, unsigned char chip,  in read_data()  argument
151 	cr = i2c_in(&ccsr_i2c->cr);  in read_data()
156 	i2c_out(&ccsr_i2c->cr, cr);  in read_data()
157 	i2c_out(&ccsr_i2c->sr, I2C_SR_IF);  in read_data()
158 	i2c_in(&ccsr_i2c->dr);	/* dummy read */  in read_data()
160 		ret = wait_for_state(ccsr_i2c, I2C_SR_IF, I2C_SR_IF);  in read_data()
162 			gen_stop(ccsr_i2c);  in read_data()
166 			gen_stop(ccsr_i2c);  in read_data()
171 			cr = i2c_in(&ccsr_i2c->cr);  in read_data()
173 			i2c_out(&ccsr_i2c->cr, cr);  in read_data()
175 		i2c_out(&ccsr_i2c->sr, I2C_SR_IF);  in read_data()
176 		buf[i] = i2c_in(&ccsr_i2c->dr);  in read_data()
182 static int write_data(struct ls_i2c *ccsr_i2c, unsigned char chip,  in write_data()  argument
189 		ret = tx_byte(ccsr_i2c, buf[i]);  in write_data()
194 	ret = gen_stop(ccsr_i2c);  in write_data()
205 	struct ls_i2c *ccsr_i2c = (void *)g_nxp_i2c_addr;  in i2c_read()  local
207 	ret = i2c_write_addr(ccsr_i2c, chip, addr, alen);  in i2c_read()
209 		gen_stop(ccsr_i2c);  in i2c_read()
213 	cr = i2c_in(&ccsr_i2c->cr);  in i2c_read()
215 	i2c_out(&ccsr_i2c->cr, cr);  in i2c_read()
217 	ret = tx_byte(ccsr_i2c, (chip << 1) | 1);  in i2c_read()
219 		gen_stop(ccsr_i2c);  in i2c_read()
223 	return read_data(ccsr_i2c, chip, buf, len);  in i2c_read()
230 	struct ls_i2c *ccsr_i2c = (void *)g_nxp_i2c_addr;  in i2c_write()  local
232 	ret = i2c_write_addr(ccsr_i2c, chip, addr, alen);  in i2c_write()
237 	return write_data(ccsr_i2c, chip, buf, len);  in i2c_write()
243 	struct ls_i2c *ccsr_i2c = (void *)g_nxp_i2c_addr;  in i2c_probe_chip()  local
245 	ret = i2c_write_addr(ccsr_i2c, chip, 0, 0);  in i2c_probe_chip()
251 	ret = gen_stop(ccsr_i2c);  in i2c_probe_chip()