57 #define set_pcf(adap, ctl, val) adap->setpcf(adap->data, ctl, val)  argument
58 #define get_pcf(adap, ctl) adap->getpcf(adap->data, ctl)  argument
59 #define get_own(adap) adap->getown(adap->data)  argument
60 #define get_clock(adap) adap->getclock(adap->data)  argument
61 #define i2c_outb(adap, val) adap->setpcf(adap->data, 0, val)  argument
62 #define i2c_inb(adap) adap->getpcf(adap->data, 0)  argument
66 static void i2c_start(struct i2c_algo_pcf_data *adap)   in i2c_start()  argument
69 	set_pcf(adap, 1, I2C_PCF_START);  in i2c_start()
72 static void i2c_repstart(struct i2c_algo_pcf_data *adap)   in i2c_repstart()  argument
75 	set_pcf(adap, 1, I2C_PCF_REPSTART);  in i2c_repstart()
79 static void i2c_stop(struct i2c_algo_pcf_data *adap)   in i2c_stop()  argument
82 	set_pcf(adap, 1, I2C_PCF_STOP);  in i2c_stop()
86 static int wait_for_bb(struct i2c_algo_pcf_data *adap) {  in wait_for_bb()  argument
91 	status = get_pcf(adap, 1);  in wait_for_bb()
95 		status = get_pcf(adap, 1);  in wait_for_bb()
112 static int wait_for_pin(struct i2c_algo_pcf_data *adap, int *status) {  in wait_for_pin()  argument
116 	*status = get_pcf(adap, 1);  in wait_for_pin()
119 		adap->waitforpin();  in wait_for_pin()
120 		*status = get_pcf(adap, 1);  in wait_for_pin()
140 static int pcf_init_8584 (struct i2c_algo_pcf_data *adap)  in pcf_init_8584()  argument
144 	DEB3(printk(KERN_DEBUG "i2c-algo-pcf.o: PCF state 0x%02x\n", get_pcf(adap, 1)));  in pcf_init_8584()
147 	set_pcf(adap, 1, I2C_PCF_PIN);  in pcf_init_8584()
151 	if ((temp = get_pcf(adap, 1)) != (0)) {  in pcf_init_8584()
157 	i2c_outb(adap, get_own(adap));  in pcf_init_8584()
159 	if ((temp = i2c_inb(adap)) != get_own(adap)) {  in pcf_init_8584()
165 	set_pcf(adap, 1, I2C_PCF_PIN | I2C_PCF_ES1);  in pcf_init_8584()
167 	if ((temp = get_pcf(adap, 1)) != I2C_PCF_ES1) {  in pcf_init_8584()
173 	i2c_outb(adap, get_clock(adap));  in pcf_init_8584()
175 	if (((temp = i2c_inb(adap)) & 0x1f) != get_clock(adap)) {  in pcf_init_8584()
181 	set_pcf(adap, 1, I2C_PCF_IDLE);  in pcf_init_8584()
184 	if ((temp = get_pcf(adap, 1)) != (I2C_PCF_PIN | I2C_PCF_BB)) {  in pcf_init_8584()
198 static inline int try_address(struct i2c_algo_pcf_data *adap,  in try_address()  argument
203 		i2c_outb(adap, addr);  in try_address()
204 		i2c_start(adap);  in try_address()
205 		status = get_pcf(adap, 1);  in try_address()
206 		if (wait_for_pin(adap, &status) >= 0) {  in try_address()
208 				i2c_stop(adap);  in try_address()
212 		i2c_stop(adap);  in try_address()
213 		udelay(adap->udelay);  in try_address()
224 	struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;  in pcf_sendbytes()  local
230 		i2c_outb(adap, buf[wrcount]);  in pcf_sendbytes()
231 		timeout = wait_for_pin(adap, &status);  in pcf_sendbytes()
233 			i2c_stop(adap);  in pcf_sendbytes()
240 			i2c_stop(adap);  in pcf_sendbytes()
248 		i2c_stop(adap);  in pcf_sendbytes()
251 		i2c_repstart(adap);  in pcf_sendbytes()
262 	struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;  in pcf_readbytes()  local
267 		if (wait_for_pin(adap, &status)) {  in pcf_readbytes()
268 			i2c_stop(adap);  in pcf_readbytes()
275 			i2c_stop(adap);  in pcf_readbytes()
282 			set_pcf(adap, 1, I2C_PCF_ESO);  in pcf_readbytes()
286 				i2c_stop(adap);  in pcf_readbytes()
288 				i2c_repstart(adap);  in pcf_readbytes()
293 			buf[i - 1] = i2c_inb(adap);  in pcf_readbytes()
295 			i2c_inb(adap); /* dummy read */  in pcf_readbytes()
303 static inline int pcf_doAddress(struct i2c_algo_pcf_data *adap,  in pcf_doAddress()  argument
314 		ret = try_address(adap, addr, retries);  in pcf_doAddress()
320 		i2c_outb(adap,msg->addr & 0x7f);  in pcf_doAddress()
327 			i2c_repstart(adap);  in pcf_doAddress()
330 			ret = try_address(adap, addr, retries);  in pcf_doAddress()
342 		i2c_outb(adap, addr);  in pcf_doAddress()
351 	struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;  in pcf_xfer()  local
358 	timeout = wait_for_bb(adap);  in pcf_xfer()
372 		ret = pcf_doAddress(adap, pmsg, i2c_adap->retries);  in pcf_xfer()
376 			i2c_start(adap);   in pcf_xfer()
380 		timeout = wait_for_pin(adap, &status);  in pcf_xfer()
382 			i2c_stop(adap);  in pcf_xfer()
391 			i2c_stop(adap);  in pcf_xfer()
434 static u32 pcf_func(struct i2c_adapter *adap)  in pcf_func()  argument
453 int i2c_pcf_add_bus(struct i2c_adapter *adap)  in i2c_pcf_add_bus()  argument
456 	struct i2c_algo_pcf_data *pcf_adap = adap->algo_data;  in i2c_pcf_add_bus()
459 	            adap->name));  in i2c_pcf_add_bus()
463 	adap->id |= pcf_algo.id;  in i2c_pcf_add_bus()
464 	adap->algo = &pcf_algo;  in i2c_pcf_add_bus()
466 	adap->timeout = 100;		/* default values, should	*/  in i2c_pcf_add_bus()
467 	adap->retries = 3;		/* be replaced by defines	*/  in i2c_pcf_add_bus()
480 		       adap->name);  in i2c_pcf_add_bus()
484 		           adap->name);  in i2c_pcf_add_bus()
501 	return i2c_add_adapter(adap);  in i2c_pcf_add_bus()
505 int i2c_pcf_del_bus(struct i2c_adapter *adap)  in i2c_pcf_del_bus()  argument
508 	if ((res = i2c_del_adapter(adap)) < 0)  in i2c_pcf_del_bus()
510 	DEB2(printk("i2c-algo-pcf.o: adapter unregistered: %s\n",adap->name));  in i2c_pcf_del_bus()