dev/ppbus/lpbb.c

48 #include <dev/ppbus/ppbconf.h>
50 #include <dev/ppbus/ppbio.h>
98 	device_t ppbus = device_get_parent(dev);
104 		/* request the ppbus */
106 		ppb_lock(ppbus);
107 		error = ppb_request_bus(ppbus, dev, how);
108 		ppb_unlock(ppbus);
112 		/* release the ppbus */
113 		ppb_lock(ppbus);
114 		error = ppb_release_bus(ppbus, dev);
115 		ppb_unlock(ppbus);
136 	device_t ppbus = device_get_parent(dev);
138 	ppb_assert_locked(ppbus);
139 	ppb_wdtr(ppbus, (u_char)~SDA_out);
140 	ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) | SCL_out));
146 	device_t ppbus = device_get_parent(dev);
149 	ppb_lock(ppbus);
150 	rval = ((ppb_rstr(ppbus) & SCL_in) == SCL_in);
151 	ppb_unlock(ppbus);
158 	device_t ppbus = device_get_parent(dev);
161 	ppb_lock(ppbus);
162 	rval = ((ppb_rstr(ppbus) & SDA_in) == SDA_in);
163 	ppb_unlock(ppbus);
170 	device_t ppbus = device_get_parent(dev);
172 	ppb_lock(ppbus);
174 		ppb_wdtr(ppbus, (u_char)SDA_out);
176 		ppb_wdtr(ppbus, (u_char)~SDA_out);
177 	ppb_unlock(ppbus);
183 	device_t ppbus = device_get_parent(dev);
185 	ppb_lock(ppbus);
187 		ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) & ~SCL_out));
189 		ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) | SCL_out));
190 	ppb_unlock(ppbus);
196 	device_t ppbus = device_get_parent(dev);
198 	ppb_lock(ppbus);
199 	if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT)) {
200 		ppb_unlock(ppbus);
201 		device_printf(dev, "can't allocate ppbus\n");
207 	if ((ppb_rstr(ppbus) & I2CKEY) ||
208 		((ppb_rstr(ppbus) & ALIM) != ALIM)) {
209 		ppb_release_bus(ppbus, dev);
210 		ppb_unlock(ppbus);
214 	ppb_release_bus(ppbus, dev);
215 	ppb_unlock(ppbus);
223 	device_t ppbus = device_get_parent(dev);
225 	ppb_lock(ppbus);
226 	if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT)) {
227 		ppb_unlock(ppbus);
228 		device_printf(dev, "can't allocate ppbus\n");
234 	ppb_release_bus(ppbus, dev);
235 	ppb_unlock(ppbus);
265 DRIVER_MODULE(lpbb, ppbus, lpbb_driver, lpbb_devclass, 0, 0);
267 MODULE_DEPEND(lpbb, ppbus, 1, 1, 1);