46 static void switch_to_flash(struct async_state *state)  in switch_to_flash()  argument
48 	local_irq_save(state->irq_flags);  in switch_to_flash()
50 	gpio_set_value(state->enet_flash_pin, 0);  in switch_to_flash()
52 	state->save_ambctl0 = bfin_read_EBIU_AMBCTL0();  in switch_to_flash()
53 	state->save_ambctl1 = bfin_read_EBIU_AMBCTL1();  in switch_to_flash()
54 	bfin_write_EBIU_AMBCTL0(state->flash_ambctl0);  in switch_to_flash()
55 	bfin_write_EBIU_AMBCTL1(state->flash_ambctl1);  in switch_to_flash()
59 static void switch_back(struct async_state *state)  in switch_back()  argument
61 	bfin_write_EBIU_AMBCTL0(state->save_ambctl0);  in switch_back()
62 	bfin_write_EBIU_AMBCTL1(state->save_ambctl1);  in switch_back()
65 	gpio_set_value(state->enet_flash_pin, 1);  in switch_back()
67 	local_irq_restore(state->irq_flags);  in switch_back()
72 	struct async_state *state = (struct async_state *)map->map_priv_1;  in bfin_flash_read()  local
76 	switch_to_flash(state);  in bfin_flash_read()
80 	switch_back(state);  in bfin_flash_read()
88 	struct async_state *state = (struct async_state *)map->map_priv_1;  in bfin_flash_copy_from()  local
90 	switch_to_flash(state);  in bfin_flash_copy_from()
94 	switch_back(state);  in bfin_flash_copy_from()
99 	struct async_state *state = (struct async_state *)map->map_priv_1;  in bfin_flash_write()  local
104 	switch_to_flash(state);  in bfin_flash_write()
109 	switch_back(state);  in bfin_flash_write()
114 	struct async_state *state = (struct async_state *)map->map_priv_1;  in bfin_flash_copy_to()  local
116 	switch_to_flash(state);  in bfin_flash_copy_to()
121 	switch_back(state);  in bfin_flash_copy_to()
132 	struct async_state *state;  in bfin_flash_probe()  local
134 	state = kzalloc(sizeof(*state), GFP_KERNEL);  in bfin_flash_probe()
135 	if (!state)  in bfin_flash_probe()
138 	state->map.name       = DRIVER_NAME;  in bfin_flash_probe()
139 	state->map.read       = bfin_flash_read;  in bfin_flash_probe()
140 	state->map.copy_from  = bfin_flash_copy_from;  in bfin_flash_probe()
141 	state->map.write      = bfin_flash_write;  in bfin_flash_probe()
142 	state->map.copy_to    = bfin_flash_copy_to;  in bfin_flash_probe()
143 	state->map.bankwidth  = pdata->width;  in bfin_flash_probe()
144 	state->map.size       = resource_size(memory);  in bfin_flash_probe()
145 	state->map.virt       = (void __iomem *)memory->start;  in bfin_flash_probe()
146 	state->map.phys       = memory->start;  in bfin_flash_probe()
147 	state->map.map_priv_1 = (unsigned long)state;  in bfin_flash_probe()
148 	state->enet_flash_pin = platform_get_irq(pdev, 0);  in bfin_flash_probe()
149 	state->flash_ambctl0  = flash_ambctl->start;  in bfin_flash_probe()
150 	state->flash_ambctl1  = flash_ambctl->end;  in bfin_flash_probe()
152 	if (gpio_request(state->enet_flash_pin, DRIVER_NAME)) {  in bfin_flash_probe()
153 		pr_devinit(KERN_ERR DRIVER_NAME ": Failed to request gpio %d\n", state->enet_flash_pin);  in bfin_flash_probe()
154 		kfree(state);  in bfin_flash_probe()
157 	gpio_direction_output(state->enet_flash_pin, 1);  in bfin_flash_probe()
159 	pr_devinit(KERN_NOTICE DRIVER_NAME ": probing %d-bit flash bus\n", state->map.bankwidth * 8);  in bfin_flash_probe()
160 	state->mtd = do_map_probe(memory->name, &state->map);  in bfin_flash_probe()
161 	if (!state->mtd) {  in bfin_flash_probe()
162 		gpio_free(state->enet_flash_pin);  in bfin_flash_probe()
163 		kfree(state);  in bfin_flash_probe()
167 	mtd_device_parse_register(state->mtd, part_probe_types, 0,  in bfin_flash_probe()
170 	platform_set_drvdata(pdev, state);  in bfin_flash_probe()
177 	struct async_state *state = platform_get_drvdata(pdev);  in bfin_flash_remove()  local
178 	gpio_free(state->enet_flash_pin);  in bfin_flash_remove()
179 	mtd_device_unregister(state->mtd);  in bfin_flash_remove()
180 	map_destroy(state->mtd);  in bfin_flash_remove()
181 	kfree(state);  in bfin_flash_remove()