video/fbdev/goldfishfb.c

15 #include <linux/fb.h>
44 	struct fb_info fb;
51 	struct goldfish_fb *fb = dev_id;
54 	spin_lock_irqsave(&fb->lock, irq_flags);
55 	status = readl(fb->reg_base + FB_INT_STATUS);
57 		fb->base_update_count++;
58 		wake_up(&fb->wait);
60 	spin_unlock_irqrestore(&fb->lock, irq_flags);
75 	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
78 		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
79 				  convert_bitfield(blue, &fb->fb.var.blue) |
80 				  convert_bitfield(green, &fb->fb.var.green) |
81 				  convert_bitfield(red, &fb->fb.var.red);
118 	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
120 	if (fb->rotation != fb->fb.var.rotate) {
122 		fb->rotation = fb->fb.var.rotate;
123 		writel(fb->rotation, fb->reg_base + FB_SET_ROTATION);
134 	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
136 	spin_lock_irqsave(&fb->lock, irq_flags);
137 	base_update_count = fb->base_update_count;
138 	writel(fb->fb.fix.smem_start + fb->fb.var.xres * 2 * var->yoffset,
139 						fb->reg_base + FB_SET_BASE);
140 	spin_unlock_irqrestore(&fb->lock, irq_flags);
141 	wait_event_timeout(fb->wait,
142 			fb->base_update_count != base_update_count, HZ / 15);
143 	if (fb->base_update_count == base_update_count)
150 	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
154 		writel(1, fb->reg_base + FB_SET_BLANK);
157 		writel(0, fb->reg_base + FB_SET_BLANK);
178 	struct goldfish_fb *fb;
183 	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
184 	if (fb == NULL) {
188 	spin_lock_init(&fb->lock);
189 	init_waitqueue_head(&fb->wait);
190 	platform_set_drvdata(pdev, fb);
197 	fb->reg_base = ioremap(r->start, PAGE_SIZE);
198 	if (fb->reg_base == NULL) {
203 	fb->irq = platform_get_irq(pdev, 0);
204 	if (fb->irq < 0) {
205 		ret = fb->irq;
209 	width = readl(fb->reg_base + FB_GET_WIDTH);
210 	height = readl(fb->reg_base + FB_GET_HEIGHT);
212 	fb->fb.fbops		= &goldfish_fb_ops;
213 	fb->fb.pseudo_palette	= fb->cmap;
214 	fb->fb.fix.type		= FB_TYPE_PACKED_PIXELS;
215 	fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
216 	fb->fb.fix.line_length = width * 2;
217 	fb->fb.fix.accel	= FB_ACCEL_NONE;
218 	fb->fb.fix.ypanstep = 1;
220 	fb->fb.var.xres		= width;
221 	fb->fb.var.yres		= height;
222 	fb->fb.var.xres_virtual	= width;
223 	fb->fb.var.yres_virtual	= height * 2;
224 	fb->fb.var.bits_per_pixel = 16;
225 	fb->fb.var.activate	= FB_ACTIVATE_NOW;
226 	fb->fb.var.height	= readl(fb->reg_base + FB_GET_PHYS_HEIGHT);
227 	fb->fb.var.width	= readl(fb->reg_base + FB_GET_PHYS_WIDTH);
228 	fb->fb.var.pixclock	= 0;
230 	fb->fb.var.red.offset = 11;
231 	fb->fb.var.red.length = 5;
232 	fb->fb.var.green.offset = 5;
233 	fb->fb.var.green.length = 6;
234 	fb->fb.var.blue.offset = 0;
235 	fb->fb.var.blue.length = 5;
238 	fb->fb.screen_base = (char __force __iomem *)dma_alloc_coherent(
242 					width, height, fb->fb.screen_base);
243 	if (fb->fb.screen_base == NULL) {
247 	fb->fb.fix.smem_start = fbpaddr;
248 	fb->fb.fix.smem_len = framesize;
250 	ret = fb_set_var(&fb->fb, &fb->fb.var);
254 	ret = request_irq(fb->irq, goldfish_fb_interrupt, IRQF_SHARED,
255 							pdev->name, fb);
259 	writel(FB_INT_BASE_UPDATE_DONE, fb->reg_base + FB_INT_ENABLE);
260 	goldfish_fb_pan_display(&fb->fb.var, &fb->fb); /* updates base */
262 	ret = register_framebuffer(&fb->fb);
268 	free_irq(fb->irq, fb);
272 				(void *)fb->fb.screen_base,
273 				fb->fb.fix.smem_start);
276 	iounmap(fb->reg_base);
278 	kfree(fb);
286 	struct goldfish_fb *fb = platform_get_drvdata(pdev);
288 	framesize = fb->fb.var.xres_virtual * fb->fb.var.yres_virtual * 2;
289 	unregister_framebuffer(&fb->fb);
290 	free_irq(fb->irq, fb);
292 	dma_free_coherent(&pdev->dev, framesize, (void *)fb->fb.screen_base,
293 						fb->fb.fix.smem_start);
294 	iounmap(fb->reg_base);
295 	kfree(fb);
299 	{ .compatible = "google,goldfish-fb", },