35 #define pca_outw(adap, reg, val) adap->write_byte(adap->data, reg, val)  argument
36 #define pca_inw(adap, reg) adap->read_byte(adap->data, reg)  argument
38 #define pca_status(adap) pca_inw(adap, I2C_PCA_STA)  argument
39 #define pca_clock(adap) adap->i2c_clock  argument
40 #define pca_set_con(adap, val) pca_outw(adap, I2C_PCA_CON, val)  argument
41 #define pca_get_con(adap) pca_inw(adap, I2C_PCA_CON)  argument
42 #define pca_wait(adap) adap->wait_for_completion(adap->data)  argument
44 static void pca_reset(struct i2c_algo_pca_data *adap)  in pca_reset()  argument
46 	if (adap->chip == I2C_PCA_CHIP_9665) {  in pca_reset()
50 		pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_IPRESET);  in pca_reset()
51 		pca_outw(adap, I2C_PCA_IND, 0xA5);  in pca_reset()
52 		pca_outw(adap, I2C_PCA_IND, 0x5A);  in pca_reset()
54 		adap->reset_chip(adap->data);  in pca_reset()
63 static int pca_start(struct i2c_algo_pca_data *adap)  in pca_start()  argument
65 	int sta = pca_get_con(adap);  in pca_start()
69 	pca_set_con(adap, sta);  in pca_start()
70 	return pca_wait(adap);  in pca_start()
78 static int pca_repeated_start(struct i2c_algo_pca_data *adap)  in pca_repeated_start()  argument
80 	int sta = pca_get_con(adap);  in pca_repeated_start()
84 	pca_set_con(adap, sta);  in pca_repeated_start()
85 	return pca_wait(adap);  in pca_repeated_start()
97 static void pca_stop(struct i2c_algo_pca_data *adap)  in pca_stop()  argument
99 	int sta = pca_get_con(adap);  in pca_stop()
103 	pca_set_con(adap, sta);  in pca_stop()
111 static int pca_address(struct i2c_algo_pca_data *adap,  in pca_address()  argument
114 	int sta = pca_get_con(adap);  in pca_address()
123 	pca_outw(adap, I2C_PCA_DAT, addr);  in pca_address()
126 	pca_set_con(adap, sta);  in pca_address()
128 	return pca_wait(adap);  in pca_address()
136 static int pca_tx_byte(struct i2c_algo_pca_data *adap,  in pca_tx_byte()  argument
139 	int sta = pca_get_con(adap);  in pca_tx_byte()
141 	pca_outw(adap, I2C_PCA_DAT, b);  in pca_tx_byte()
144 	pca_set_con(adap, sta);  in pca_tx_byte()
146 	return pca_wait(adap);  in pca_tx_byte()
154 static void pca_rx_byte(struct i2c_algo_pca_data *adap,  in pca_rx_byte()  argument
157 	*b = pca_inw(adap, I2C_PCA_DAT);  in pca_rx_byte()
166 static int pca_rx_ack(struct i2c_algo_pca_data *adap,  in pca_rx_ack()  argument
169 	int sta = pca_get_con(adap);  in pca_rx_ack()
176 	pca_set_con(adap, sta);  in pca_rx_ack()
177 	return pca_wait(adap);  in pca_rx_ack()
184 	struct i2c_algo_pca_data *adap = i2c_adap->algo_data;  in pca_xfer()  local
193 	while ((state = pca_status(adap)) != 0xf8) {  in pca_xfer()
229 		state = pca_status(adap);  in pca_xfer()
236 			completed = pca_start(adap);  in pca_xfer()
241 			completed = pca_address(adap, msg);  in pca_xfer()
247 				completed = pca_tx_byte(adap,  in pca_xfer()
254 				pca_stop(adap);  in pca_xfer()
256 				completed = pca_repeated_start(adap);  in pca_xfer()
261 			pca_stop(adap);  in pca_xfer()
266 			completed = pca_rx_ack(adap, msg->len > 1);  in pca_xfer()
271 				pca_rx_byte(adap, &msg->buf[numbytes], 1);  in pca_xfer()
273 				completed = pca_rx_ack(adap,  in pca_xfer()
279 				pca_stop(adap);  in pca_xfer()
281 				completed = pca_repeated_start(adap);  in pca_xfer()
286 			pca_stop(adap);  in pca_xfer()
292 			pca_stop(adap);  in pca_xfer()
306 			pca_start(adap);  in pca_xfer()
311 				pca_rx_byte(adap, &msg->buf[numbytes], 0);  in pca_xfer()
314 					pca_stop(adap);  in pca_xfer()
316 					completed = pca_repeated_start(adap);  in pca_xfer()
321 				pca_stop(adap);  in pca_xfer()
327 			pca_reset(adap);  in pca_xfer()
331 			pca_reset(adap);  in pca_xfer()
335 			pca_reset(adap);  in pca_xfer()
350 	     curmsg, num, pca_status(adap),  in pca_xfer()
351 	     pca_get_con(adap));  in pca_xfer()
355 static u32 pca_func(struct i2c_adapter *adap)  in pca_func()  argument
365 static unsigned int pca_probe_chip(struct i2c_adapter *adap)  in pca_probe_chip()  argument
367 	struct i2c_algo_pca_data *pca_data = adap->algo_data;  in pca_probe_chip()
379 		printk(KERN_INFO "%s: PCA9665 detected.\n", adap->name);  in pca_probe_chip()
382 		printk(KERN_INFO "%s: PCA9564 detected.\n", adap->name);  in pca_probe_chip()
388 static int pca_init(struct i2c_adapter *adap)  in pca_init()  argument
390 	struct i2c_algo_pca_data *pca_data = adap->algo_data;  in pca_init()
392 	adap->algo = &pca_algo;  in pca_init()
394 	if (pca_probe_chip(adap) == I2C_PCA_CHIP_9564) {  in pca_init()
427 					" Using default 59kHz.\n", adap->name);  in pca_init()
434 				" Use the nominal frequency.\n", adap->name);  in pca_init()
441 		     adap->name, freqs[clock]);  in pca_init()
461 				" Using 1265.8kHz.\n", adap->name);  in pca_init()
467 				" Using 60.3kHz.\n", adap->name);  in pca_init()
513 		     "%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()