26 #define pca_outw(adap, reg, val) adap->write_byte(adap->data, reg, val)  argument
27 #define pca_inw(adap, reg) adap->read_byte(adap->data, reg)  argument
29 #define pca_status(adap) pca_inw(adap, I2C_PCA_STA)  argument
30 #define pca_clock(adap) adap->i2c_clock  argument
31 #define pca_set_con(adap, val) pca_outw(adap, I2C_PCA_CON, val)  argument
32 #define pca_get_con(adap) pca_inw(adap, I2C_PCA_CON)  argument
33 #define pca_wait(adap) adap->wait_for_completion(adap->data)  argument
35 static void pca_reset(struct i2c_algo_pca_data *adap)  in pca_reset()  argument
37 	if (adap->chip == I2C_PCA_CHIP_9665) {  in pca_reset()
41 		pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_IPRESET);  in pca_reset()
42 		pca_outw(adap, I2C_PCA_IND, 0xA5);  in pca_reset()
43 		pca_outw(adap, I2C_PCA_IND, 0x5A);  in pca_reset()
49 		pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_IMODE);  in pca_reset()
50 		pca_outw(adap, I2C_PCA_IND, adap->bus_settings.mode);  in pca_reset()
51 		pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_ISCLL);  in pca_reset()
52 		pca_outw(adap, I2C_PCA_IND, adap->bus_settings.tlow);  in pca_reset()
53 		pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_ISCLH);  in pca_reset()
54 		pca_outw(adap, I2C_PCA_IND, adap->bus_settings.thi);  in pca_reset()
56 		pca_set_con(adap, I2C_PCA_CON_ENSIO);  in pca_reset()
58 		adap->reset_chip(adap->data);  in pca_reset()
59 		pca_set_con(adap, I2C_PCA_CON_ENSIO | adap->bus_settings.clock_freq);  in pca_reset()
68 static int pca_start(struct i2c_algo_pca_data *adap)  in pca_start()  argument
70 	int sta = pca_get_con(adap);  in pca_start()
74 	pca_set_con(adap, sta);  in pca_start()
75 	return pca_wait(adap);  in pca_start()
83 static int pca_repeated_start(struct i2c_algo_pca_data *adap)  in pca_repeated_start()  argument
85 	int sta = pca_get_con(adap);  in pca_repeated_start()
89 	pca_set_con(adap, sta);  in pca_repeated_start()
90 	return pca_wait(adap);  in pca_repeated_start()
102 static void pca_stop(struct i2c_algo_pca_data *adap)  in pca_stop()  argument
104 	int sta = pca_get_con(adap);  in pca_stop()
108 	pca_set_con(adap, sta);  in pca_stop()
116 static int pca_address(struct i2c_algo_pca_data *adap,  in pca_address()  argument
119 	int sta = pca_get_con(adap);  in pca_address()
125 	pca_outw(adap, I2C_PCA_DAT, addr);  in pca_address()
128 	pca_set_con(adap, sta);  in pca_address()
130 	return pca_wait(adap);  in pca_address()
138 static int pca_tx_byte(struct i2c_algo_pca_data *adap,  in pca_tx_byte()  argument
141 	int sta = pca_get_con(adap);  in pca_tx_byte()
143 	pca_outw(adap, I2C_PCA_DAT, b);  in pca_tx_byte()
146 	pca_set_con(adap, sta);  in pca_tx_byte()
148 	return pca_wait(adap);  in pca_tx_byte()
156 static void pca_rx_byte(struct i2c_algo_pca_data *adap,  in pca_rx_byte()  argument
159 	*b = pca_inw(adap, I2C_PCA_DAT);  in pca_rx_byte()
168 static int pca_rx_ack(struct i2c_algo_pca_data *adap,  in pca_rx_ack()  argument
171 	int sta = pca_get_con(adap);  in pca_rx_ack()
178 	pca_set_con(adap, sta);  in pca_rx_ack()
179 	return pca_wait(adap);  in pca_rx_ack()
186 	struct i2c_algo_pca_data *adap = i2c_adap->algo_data;  in pca_xfer()  local
195 	while ((state = pca_status(adap)) != 0xf8) {  in pca_xfer()
231 		state = pca_status(adap);  in pca_xfer()
238 			completed = pca_start(adap);  in pca_xfer()
243 			completed = pca_address(adap, msg);  in pca_xfer()
249 				completed = pca_tx_byte(adap,  in pca_xfer()
256 				pca_stop(adap);  in pca_xfer()
258 				completed = pca_repeated_start(adap);  in pca_xfer()
263 			pca_stop(adap);  in pca_xfer()
268 			completed = pca_rx_ack(adap, msg->len > 1);  in pca_xfer()
273 				pca_rx_byte(adap, &msg->buf[numbytes], 1);  in pca_xfer()
275 				completed = pca_rx_ack(adap,  in pca_xfer()
281 				pca_stop(adap);  in pca_xfer()
283 				completed = pca_repeated_start(adap);  in pca_xfer()
288 			pca_stop(adap);  in pca_xfer()
294 			pca_stop(adap);  in pca_xfer()
308 			pca_start(adap);  in pca_xfer()
313 				pca_rx_byte(adap, &msg->buf[numbytes], 0);  in pca_xfer()
316 					pca_stop(adap);  in pca_xfer()
318 					completed = pca_repeated_start(adap);  in pca_xfer()
323 				pca_stop(adap);  in pca_xfer()
329 			pca_reset(adap);  in pca_xfer()
334 			pca_reset(adap);  in pca_xfer()
338 			pca_reset(adap);  in pca_xfer()
353 	     curmsg, num, pca_status(adap),  in pca_xfer()
354 	     pca_get_con(adap));  in pca_xfer()
358 static u32 pca_func(struct i2c_adapter *adap)  in pca_func()  argument
368 static unsigned int pca_probe_chip(struct i2c_adapter *adap)  in pca_probe_chip()  argument
370 	struct i2c_algo_pca_data *pca_data = adap->algo_data;  in pca_probe_chip()
382 		printk(KERN_INFO "%s: PCA9665 detected.\n", adap->name);  in pca_probe_chip()
385 		printk(KERN_INFO "%s: PCA9564 detected.\n", adap->name);  in pca_probe_chip()
391 static int pca_init(struct i2c_adapter *adap)  in pca_init()  argument
393 	struct i2c_algo_pca_data *pca_data = adap->algo_data;  in pca_init()
395 	adap->algo = &pca_algo;  in pca_init()
397 	if (pca_probe_chip(adap) == I2C_PCA_CHIP_9564) {  in pca_init()
430 					" Using default 59kHz.\n", adap->name);  in pca_init()
437 				" Use the nominal frequency.\n", adap->name);  in pca_init()
442 		     adap->name, freqs[clock]);  in pca_init()
465 				" Using 1265.8kHz.\n", adap->name);  in pca_init()
471 				" Using 60.3kHz.\n", adap->name);  in pca_init()
522 		     "%s: Clock frequency is %dHz\n", adap->name, clock * 100);  in pca_init()
532 int i2c_pca_add_bus(struct i2c_adapter *adap)  in i2c_pca_add_bus()  argument
536 	rval = pca_init(adap);  in i2c_pca_add_bus()
540 	return i2c_add_adapter(adap);  in i2c_pca_add_bus()
544 int i2c_pca_add_numbered_bus(struct i2c_adapter *adap)  in i2c_pca_add_numbered_bus()  argument
548 	rval = pca_init(adap);  in i2c_pca_add_numbered_bus()
552 	return i2c_add_numbered_adapter(adap);  in i2c_pca_add_numbered_bus()