2  * linux/drivers/video/hecubafb.c -- FB driver for Hecuba/Apollo controller
12  * This work was possible because of apollo display code from E-Ink's website
15  * available by E-Ink on its support site. Some commands such as 0xA4
24  * It is intended to be architecture independent. A board specific driver
46 /* Display specific information */
75 	par->board->set_data(par, data);  in apollo_send_data()
78 	par->board->set_ctl(par, HCB_DS_BIT, 0);  in apollo_send_data()
81 	par->board->wait_for_ack(par, 0);  in apollo_send_data()
84 	par->board->set_ctl(par, HCB_DS_BIT, 1);  in apollo_send_data()
87 	par->board->wait_for_ack(par, 1);  in apollo_send_data()
93 	par->board->set_ctl(par, HCB_CD_BIT, 1);  in apollo_send_command()
99 	par->board->set_ctl(par, HCB_CD_BIT, 0);  in apollo_send_command()
105 	unsigned char *buf = (unsigned char __force *)par->info->screen_base;  in hecubafb_dpy_update()
121 	hecubafb_dpy_update(info->par);  in hecubafb_dpy_deferred_io()
127 	struct hecubafb_par *par = info->par;  in hecubafb_fillrect()
137 	struct hecubafb_par *par = info->par;  in hecubafb_copyarea()
147 	struct hecubafb_par *par = info->par;  in hecubafb_imageblit()
161 	struct hecubafb_par *par = info->par;  in hecubafb_write()
167 	if (info->state != FBINFO_STATE_RUNNING)  in hecubafb_write()
168 		return -EPERM;  in hecubafb_write()
170 	total_size = info->fix.smem_len;  in hecubafb_write()
173 		return -EFBIG;  in hecubafb_write()
176 		err = -EFBIG;  in hecubafb_write()
182 			err = -ENOSPC;  in hecubafb_write()
184 		count = total_size - p;  in hecubafb_write()
187 	dst = (void __force *) (info->screen_base + p);  in hecubafb_write()
190 		err = -EFAULT;  in hecubafb_write()
217 	struct hecuba_board *board;  in hecubafb_probe()  local
218 	int retval = -ENOMEM;  in hecubafb_probe()
223 	/* pick up board specific routines */  in hecubafb_probe()
224 	board = dev->dev.platform_data;  in hecubafb_probe()
225 	if (!board)  in hecubafb_probe()
226 		return -EINVAL;  in hecubafb_probe()
228 	/* try to count device specific driver, if can't, platform recalls */  in hecubafb_probe()
229 	if (!try_module_get(board->owner))  in hecubafb_probe()
230 		return -ENODEV;  in hecubafb_probe()
238 	info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev);  in hecubafb_probe()
242 	info->screen_base = (char __force __iomem *)videomemory;  in hecubafb_probe()
243 	info->fbops = &hecubafb_ops;  in hecubafb_probe()
245 	info->var = hecubafb_var;  in hecubafb_probe()
246 	info->fix = hecubafb_fix;  in hecubafb_probe()
247 	info->fix.smem_len = videomemorysize;  in hecubafb_probe()
248 	par = info->par;  in hecubafb_probe()
249 	par->info = info;  in hecubafb_probe()
250 	par->board = board;  in hecubafb_probe()
251 	par->send_command = apollo_send_command;  in hecubafb_probe()
252 	par->send_data = apollo_send_data;  in hecubafb_probe()
254 	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;  in hecubafb_probe()
256 	info->fbdefio = &hecubafb_defio;  in hecubafb_probe()
268 	retval = par->board->init(par);  in hecubafb_probe()
278 	module_put(board->owner);  in hecubafb_probe()
287 		struct hecubafb_par *par = info->par;  in hecubafb_remove()
290 		vfree((void __force *)info->screen_base);  in hecubafb_remove()
291 		if (par->board->remove)  in hecubafb_remove()
292 			par->board->remove(par);  in hecubafb_remove()
293 		module_put(par->board->owner);  in hecubafb_remove()