95 	int (*open)(struct pmac_i2c_bus *bus);
96 	void (*close)(struct pmac_i2c_bus *bus);
97 	int (*xfer)(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,
386 static int kw_i2c_open(struct pmac_i2c_bus *bus)  in kw_i2c_open()  argument
388 	struct pmac_i2c_host_kw *host = bus->hostdata;  in kw_i2c_open()
393 static void kw_i2c_close(struct pmac_i2c_bus *bus)  in kw_i2c_close()  argument
395 	struct pmac_i2c_host_kw *host = bus->hostdata;  in kw_i2c_close()
399 static int kw_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,  in kw_i2c_xfer()  argument
402 	struct pmac_i2c_host_kw *host = bus->hostdata;  in kw_i2c_xfer()
404 	int use_irq = host->irq != NO_IRQ && !bus->polled;  in kw_i2c_xfer()
407 	switch(bus->mode) {  in kw_i2c_xfer()
429 	kw_write_reg(reg_mode, mode_reg | (bus->channel << 4));  in kw_i2c_xfer()
448 	host->polled = bus->polled;  in kw_i2c_xfer()
574 	struct pmac_i2c_bus *bus;  in kw_i2c_add()  local
576 	bus = kzalloc(sizeof(struct pmac_i2c_bus), GFP_KERNEL);  in kw_i2c_add()
577 	if (bus == NULL)  in kw_i2c_add()
580 	bus->controller = of_node_get(controller);  in kw_i2c_add()
581 	bus->busnode = of_node_get(busnode);  in kw_i2c_add()
582 	bus->type = pmac_i2c_bus_keywest;  in kw_i2c_add()
583 	bus->hostdata = host;  in kw_i2c_add()
584 	bus->channel = channel;  in kw_i2c_add()
585 	bus->mode = pmac_i2c_mode_std;  in kw_i2c_add()
586 	bus->open = kw_i2c_open;  in kw_i2c_add()
587 	bus->close = kw_i2c_close;  in kw_i2c_add()
588 	bus->xfer = kw_i2c_xfer;  in kw_i2c_add()
589 	mutex_init(&bus->mutex);  in kw_i2c_add()
591 		bus->flags = pmac_i2c_multibus;  in kw_i2c_add()
592 	list_add(&bus->link, &pmac_i2c_busses);  in kw_i2c_add()
661 	u8	bus;  member
676 static int pmu_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,  in pmu_i2c_xfer()  argument
679 	struct adb_request *req = bus->hostdata;  in pmu_i2c_xfer()
694 		hdr->bus = bus->channel;  in pmu_i2c_xfer()
697 		switch(bus->mode) {  in pmu_i2c_xfer()
711 			if (bus->mode == pmac_i2c_mode_stdsub)  in pmu_i2c_xfer()
749 		hdr->bus = PMU_I2C_BUS_STATUS;  in pmu_i2c_xfer()
782 	struct pmac_i2c_bus *bus;  in pmu_i2c_probe()  local
806 		bus = kzalloc(sz, GFP_KERNEL);  in pmu_i2c_probe()
807 		if (bus == NULL)  in pmu_i2c_probe()
810 		bus->controller = busnode;  in pmu_i2c_probe()
811 		bus->busnode = busnode;  in pmu_i2c_probe()
812 		bus->type = pmac_i2c_bus_pmu;  in pmu_i2c_probe()
813 		bus->channel = channel;  in pmu_i2c_probe()
814 		bus->mode = pmac_i2c_mode_std;  in pmu_i2c_probe()
815 		bus->hostdata = bus + 1;  in pmu_i2c_probe()
816 		bus->xfer = pmu_i2c_xfer;  in pmu_i2c_probe()
817 		mutex_init(&bus->mutex);  in pmu_i2c_probe()
818 		bus->flags = pmac_i2c_multibus;  in pmu_i2c_probe()
819 		list_add(&bus->link, &pmac_i2c_busses);  in pmu_i2c_probe()
841 static int smu_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,  in smu_i2c_xfer()  argument
844 	struct smu_i2c_cmd *cmd = bus->hostdata;  in smu_i2c_xfer()
854 	cmd->info.bus = bus->channel;  in smu_i2c_xfer()
858 	switch(bus->mode) {  in smu_i2c_xfer()
872 		if (bus->mode == pmac_i2c_mode_stdsub)  in smu_i2c_xfer()
900 	struct pmac_i2c_bus *bus;  in smu_i2c_probe()  local
929 		bus = kzalloc(sz, GFP_KERNEL);  in smu_i2c_probe()
930 		if (bus == NULL)  in smu_i2c_probe()
933 		bus->controller = controller;  in smu_i2c_probe()
934 		bus->busnode = of_node_get(busnode);  in smu_i2c_probe()
935 		bus->type = pmac_i2c_bus_smu;  in smu_i2c_probe()
936 		bus->channel = *reg;  in smu_i2c_probe()
937 		bus->mode = pmac_i2c_mode_std;  in smu_i2c_probe()
938 		bus->hostdata = bus + 1;  in smu_i2c_probe()
939 		bus->xfer = smu_i2c_xfer;  in smu_i2c_probe()
940 		mutex_init(&bus->mutex);  in smu_i2c_probe()
941 		bus->flags = 0;  in smu_i2c_probe()
942 		list_add(&bus->link, &pmac_i2c_busses);  in smu_i2c_probe()
945 		       bus->channel, busnode->full_name);  in smu_i2c_probe()
962 	struct pmac_i2c_bus *bus;  in pmac_i2c_find_bus()  local
965 		list_for_each_entry(bus, &pmac_i2c_busses, link) {  in pmac_i2c_find_bus()
966 			if (p == bus->busnode) {  in pmac_i2c_find_bus()
967 				if (prev && bus->flags & pmac_i2c_multibus) {  in pmac_i2c_find_bus()
973 					if (((*reg) >> 8) != bus->channel)  in pmac_i2c_find_bus()
978 				return bus;  in pmac_i2c_find_bus()
1000 struct device_node *pmac_i2c_get_controller(struct pmac_i2c_bus *bus)  in pmac_i2c_get_controller()  argument
1002 	return bus->controller;  in pmac_i2c_get_controller()
1006 struct device_node *pmac_i2c_get_bus_node(struct pmac_i2c_bus *bus)  in pmac_i2c_get_bus_node()  argument
1008 	return bus->busnode;  in pmac_i2c_get_bus_node()
1012 int pmac_i2c_get_type(struct pmac_i2c_bus *bus)  in pmac_i2c_get_type()  argument
1014 	return bus->type;  in pmac_i2c_get_type()
1018 int pmac_i2c_get_flags(struct pmac_i2c_bus *bus)  in pmac_i2c_get_flags()  argument
1020 	return bus->flags;  in pmac_i2c_get_flags()
1024 int pmac_i2c_get_channel(struct pmac_i2c_bus *bus)  in pmac_i2c_get_channel()  argument
1026 	return bus->channel;  in pmac_i2c_get_channel()
1031 struct i2c_adapter *pmac_i2c_get_adapter(struct pmac_i2c_bus *bus)  in pmac_i2c_get_adapter()  argument
1033 	return &bus->adapter;  in pmac_i2c_get_adapter()
1039 	struct pmac_i2c_bus *bus;  in pmac_i2c_adapter_to_bus()  local
1041 	list_for_each_entry(bus, &pmac_i2c_busses, link)  in pmac_i2c_adapter_to_bus()
1042 		if (&bus->adapter == adapter)  in pmac_i2c_adapter_to_bus()
1043 			return bus;  in pmac_i2c_adapter_to_bus()
1050 	struct pmac_i2c_bus *bus = pmac_i2c_find_bus(dev);  in pmac_i2c_match_adapter()  local
1052 	if (bus == NULL)  in pmac_i2c_match_adapter()
1054 	return (&bus->adapter == adapter);  in pmac_i2c_match_adapter()
1060 	struct pmac_i2c_bus *bus, *found = NULL;  in pmac_low_i2c_lock()  local
1062 	list_for_each_entry(bus, &pmac_i2c_busses, link) {  in pmac_low_i2c_lock()
1063 		if (np == bus->controller) {  in pmac_low_i2c_lock()
1064 			found = bus;  in pmac_low_i2c_lock()
1070 	return pmac_i2c_open(bus, 0);  in pmac_low_i2c_lock()
1076 	struct pmac_i2c_bus *bus, *found = NULL;  in pmac_low_i2c_unlock()  local
1078 	list_for_each_entry(bus, &pmac_i2c_busses, link) {  in pmac_low_i2c_unlock()
1079 		if (np == bus->controller) {  in pmac_low_i2c_unlock()
1080 			found = bus;  in pmac_low_i2c_unlock()
1086 	pmac_i2c_close(bus);  in pmac_low_i2c_unlock()
1092 int pmac_i2c_open(struct pmac_i2c_bus *bus, int polled)  in pmac_i2c_open()  argument
1096 	mutex_lock(&bus->mutex);  in pmac_i2c_open()
1097 	bus->polled = polled || pmac_i2c_force_poll;  in pmac_i2c_open()
1098 	bus->opened = 1;  in pmac_i2c_open()
1099 	bus->mode = pmac_i2c_mode_std;  in pmac_i2c_open()
1100 	if (bus->open && (rc = bus->open(bus)) != 0) {  in pmac_i2c_open()
1101 		bus->opened = 0;  in pmac_i2c_open()
1102 		mutex_unlock(&bus->mutex);  in pmac_i2c_open()
1109 void pmac_i2c_close(struct pmac_i2c_bus *bus)  in pmac_i2c_close()  argument
1111 	WARN_ON(!bus->opened);  in pmac_i2c_close()
1112 	if (bus->close)  in pmac_i2c_close()
1113 		bus->close(bus);  in pmac_i2c_close()
1114 	bus->opened = 0;  in pmac_i2c_close()
1115 	mutex_unlock(&bus->mutex);  in pmac_i2c_close()
1119 int pmac_i2c_setmode(struct pmac_i2c_bus *bus, int mode)  in pmac_i2c_setmode()  argument
1121 	WARN_ON(!bus->opened);  in pmac_i2c_setmode()
1128 		       " bus %s !\n", mode, bus->busnode->full_name);  in pmac_i2c_setmode()
1131 	bus->mode = mode;  in pmac_i2c_setmode()
1137 int pmac_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,  in pmac_i2c_xfer()  argument
1142 	WARN_ON(!bus->opened);  in pmac_i2c_xfer()
1145 	    " %d bytes, bus %s\n", bus->channel, addrdir, bus->mode, subsize,  in pmac_i2c_xfer()
1146 	    subaddr, len, bus->busnode->full_name);  in pmac_i2c_xfer()
1148 	rc = bus->xfer(bus, addrdir, subsize, subaddr, data, len);  in pmac_i2c_xfer()
1167 	struct pmac_i2c_bus *bus;  in pmac_i2c_devscan()  local
1198 	list_for_each_entry(bus, &pmac_i2c_busses, link) {  in pmac_i2c_devscan()
1200 		     (np = of_get_next_child(bus->busnode, np)) != NULL;) {  in pmac_i2c_devscan()
1203 			if (bus->flags & pmac_i2c_multibus)  in pmac_i2c_devscan()
1204 				if (bus != pmac_i2c_find_bus(np))  in pmac_i2c_devscan()
1225 	struct pmac_i2c_bus	*bus;  member
1236 	struct pmac_i2c_bus	*bus;  in pmac_i2c_do_begin()  local
1238 	bus = pmac_i2c_find_bus(func->node);  in pmac_i2c_do_begin()
1239 	if (bus == NULL) {  in pmac_i2c_do_begin()
1244 	if (pmac_i2c_open(bus, 0)) {  in pmac_i2c_do_begin()
1257 		pmac_i2c_close(bus);  in pmac_i2c_do_begin()
1260 	inst->bus = bus;  in pmac_i2c_do_begin()
1272 	pmac_i2c_close(inst->bus);  in pmac_i2c_do_end()
1281 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_read, 0, 0,  in pmac_i2c_do_read()
1289 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_write, 0, 0,  in pmac_i2c_do_write()
1326 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_write, 0, 0,  in pmac_i2c_do_rmw()
1335 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_read, 1, subaddr,  in pmac_i2c_do_read_sub()
1344 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_write, 1,  in pmac_i2c_do_write_sub()
1352 	return pmac_i2c_setmode(inst->bus, mode);  in pmac_i2c_do_set_mode()
1367 	return pmac_i2c_xfer(inst->bus, inst->addr | pmac_i2c_write, 1,  in pmac_i2c_do_rmw_sub()
1490 	struct pmac_i2c_bus *bus;  in pmac_i2c_create_platform_devices()  local
1500 	list_for_each_entry(bus, &pmac_i2c_busses, link) {  in pmac_i2c_create_platform_devices()
1501 		bus->platform_dev =  in pmac_i2c_create_platform_devices()
1503 		if (bus->platform_dev == NULL)  in pmac_i2c_create_platform_devices()
1505 		bus->platform_dev->dev.platform_data = bus;  in pmac_i2c_create_platform_devices()
1506 		bus->platform_dev->dev.of_node = bus->busnode;  in pmac_i2c_create_platform_devices()
1507 		platform_device_add(bus->platform_dev);  in pmac_i2c_create_platform_devices()