xref: /openbmc/u-boot/drivers/video/atmel_hlcdfb.c (revision 9c24dfb2) 
1 /*
2  * Driver for AT91/AT32 MULTI LAYER LCD Controller
3  *
4  * Copyright (C) 2012 Atmel Corporation
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/arch/gpio.h>
12 #include <asm/arch/clk.h>
13 #include <clk.h>
14 #include <dm.h>
15 #include <fdtdec.h>
16 #include <lcd.h>
17 #include <video.h>
18 #include <wait_bit.h>
19 #include <atmel_hlcdc.h>
20 
21 #if defined(CONFIG_LCD_LOGO)
22 #include <bmp_logo.h>
23 #endif
24 
25 DECLARE_GLOBAL_DATA_PTR;
26 
27 #ifndef CONFIG_DM_VIDEO
28 
29 /* configurable parameters */
30 #define ATMEL_LCDC_CVAL_DEFAULT		0xc8
31 #define ATMEL_LCDC_DMA_BURST_LEN	8
32 #ifndef ATMEL_LCDC_GUARD_TIME
33 #define ATMEL_LCDC_GUARD_TIME		1
34 #endif
35 
36 #define ATMEL_LCDC_FIFO_SIZE		512
37 
38 /*
39  * the CLUT register map as following
40  * RCLUT(24 ~ 16), GCLUT(15 ~ 8), BCLUT(7 ~ 0)
41  */
42 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
43 {
44 	writel(panel_info.mmio + ATMEL_LCDC_LUT(regno),
45 	       ((red << LCDC_BASECLUT_RCLUT_Pos) & LCDC_BASECLUT_RCLUT_Msk)
46 	       | ((green << LCDC_BASECLUT_GCLUT_Pos) & LCDC_BASECLUT_GCLUT_Msk)
47 	       | ((blue << LCDC_BASECLUT_BCLUT_Pos) & LCDC_BASECLUT_BCLUT_Msk));
48 }
49 
50 ushort *configuration_get_cmap(void)
51 {
52 #if defined(CONFIG_LCD_LOGO)
53 	return bmp_logo_palette;
54 #else
55 	return NULL;
56 #endif
57 }
58 
59 void lcd_ctrl_init(void *lcdbase)
60 {
61 	unsigned long value;
62 	struct lcd_dma_desc *desc;
63 	struct atmel_hlcd_regs *regs;
64 	int ret;
65 
66 	if (!has_lcdc())
67 		return;     /* No lcdc */
68 
69 	regs = (struct atmel_hlcd_regs *)panel_info.mmio;
70 
71 	/* Disable DISP signal */
72 	writel(LCDC_LCDDIS_DISPDIS, &regs->lcdc_lcddis);
73 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
74 				false, 1000, false);
75 	if (ret)
76 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
77 	/* Disable synchronization */
78 	writel(LCDC_LCDDIS_SYNCDIS, &regs->lcdc_lcddis);
79 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
80 				false, 1000, false);
81 	if (ret)
82 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
83 	/* Disable pixel clock */
84 	writel(LCDC_LCDDIS_CLKDIS, &regs->lcdc_lcddis);
85 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
86 				false, 1000, false);
87 	if (ret)
88 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
89 	/* Disable PWM */
90 	writel(LCDC_LCDDIS_PWMDIS, &regs->lcdc_lcddis);
91 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
92 				false, 1000, false);
93 	if (ret)
94 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
95 
96 	/* Set pixel clock */
97 	value = get_lcdc_clk_rate(0) / panel_info.vl_clk;
98 	if (get_lcdc_clk_rate(0) % panel_info.vl_clk)
99 		value++;
100 
101 	if (value < 1) {
102 		/* Using system clock as pixel clock */
103 		writel(LCDC_LCDCFG0_CLKDIV(0)
104 			| LCDC_LCDCFG0_CGDISHCR
105 			| LCDC_LCDCFG0_CGDISHEO
106 			| LCDC_LCDCFG0_CGDISOVR1
107 			| LCDC_LCDCFG0_CGDISBASE
108 			| panel_info.vl_clk_pol
109 			| LCDC_LCDCFG0_CLKSEL,
110 			&regs->lcdc_lcdcfg0);
111 
112 	} else {
113 		writel(LCDC_LCDCFG0_CLKDIV(value - 2)
114 			| LCDC_LCDCFG0_CGDISHCR
115 			| LCDC_LCDCFG0_CGDISHEO
116 			| LCDC_LCDCFG0_CGDISOVR1
117 			| LCDC_LCDCFG0_CGDISBASE
118 			| panel_info.vl_clk_pol,
119 			&regs->lcdc_lcdcfg0);
120 	}
121 
122 	/* Initialize control register 5 */
123 	value = 0;
124 
125 	value |= panel_info.vl_sync;
126 
127 #ifndef LCD_OUTPUT_BPP
128 	/* Output is 24bpp */
129 	value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
130 #else
131 	switch (LCD_OUTPUT_BPP) {
132 	case 12:
133 		value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP;
134 		break;
135 	case 16:
136 		value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP;
137 		break;
138 	case 18:
139 		value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP;
140 		break;
141 	case 24:
142 		value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
143 		break;
144 	default:
145 		BUG();
146 		break;
147 	}
148 #endif
149 
150 	value |= LCDC_LCDCFG5_GUARDTIME(ATMEL_LCDC_GUARD_TIME);
151 	value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS);
152 	writel(value, &regs->lcdc_lcdcfg5);
153 
154 	/* Vertical & Horizontal Timing */
155 	value = LCDC_LCDCFG1_VSPW(panel_info.vl_vsync_len - 1);
156 	value |= LCDC_LCDCFG1_HSPW(panel_info.vl_hsync_len - 1);
157 	writel(value, &regs->lcdc_lcdcfg1);
158 
159 	value = LCDC_LCDCFG2_VBPW(panel_info.vl_upper_margin);
160 	value |= LCDC_LCDCFG2_VFPW(panel_info.vl_lower_margin - 1);
161 	writel(value, &regs->lcdc_lcdcfg2);
162 
163 	value = LCDC_LCDCFG3_HBPW(panel_info.vl_left_margin - 1);
164 	value |= LCDC_LCDCFG3_HFPW(panel_info.vl_right_margin - 1);
165 	writel(value, &regs->lcdc_lcdcfg3);
166 
167 	/* Display size */
168 	value = LCDC_LCDCFG4_RPF(panel_info.vl_row - 1);
169 	value |= LCDC_LCDCFG4_PPL(panel_info.vl_col - 1);
170 	writel(value, &regs->lcdc_lcdcfg4);
171 
172 	writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO,
173 	       &regs->lcdc_basecfg0);
174 
175 	switch (NBITS(panel_info.vl_bpix)) {
176 	case 16:
177 		writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565,
178 		       &regs->lcdc_basecfg1);
179 		break;
180 	case 32:
181 		writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888,
182 		       &regs->lcdc_basecfg1);
183 		break;
184 	default:
185 		BUG();
186 		break;
187 	}
188 
189 	writel(LCDC_BASECFG2_XSTRIDE(0), &regs->lcdc_basecfg2);
190 	writel(0, &regs->lcdc_basecfg3);
191 	writel(LCDC_BASECFG4_DMA, &regs->lcdc_basecfg4);
192 
193 	/* Disable all interrupts */
194 	writel(~0UL, &regs->lcdc_lcdidr);
195 	writel(~0UL, &regs->lcdc_baseidr);
196 
197 	/* Setup the DMA descriptor, this descriptor will loop to itself */
198 	desc = (struct lcd_dma_desc *)(lcdbase - 16);
199 
200 	desc->address = (u32)lcdbase;
201 	/* Disable DMA transfer interrupt & descriptor loaded interrupt. */
202 	desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN
203 			| LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH;
204 	desc->next = (u32)desc;
205 
206 	/* Flush the DMA descriptor if we enabled dcache */
207 	flush_dcache_range((u32)desc, (u32)desc + sizeof(*desc));
208 
209 	writel(desc->address, &regs->lcdc_baseaddr);
210 	writel(desc->control, &regs->lcdc_basectrl);
211 	writel(desc->next, &regs->lcdc_basenext);
212 	writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN,
213 	       &regs->lcdc_basecher);
214 
215 	/* Enable LCD */
216 	value = readl(&regs->lcdc_lcden);
217 	writel(value | LCDC_LCDEN_CLKEN, &regs->lcdc_lcden);
218 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
219 				true, 1000, false);
220 	if (ret)
221 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
222 	value = readl(&regs->lcdc_lcden);
223 	writel(value | LCDC_LCDEN_SYNCEN, &regs->lcdc_lcden);
224 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
225 				true, 1000, false);
226 	if (ret)
227 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
228 	value = readl(&regs->lcdc_lcden);
229 	writel(value | LCDC_LCDEN_DISPEN, &regs->lcdc_lcden);
230 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
231 				true, 1000, false);
232 	if (ret)
233 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
234 	value = readl(&regs->lcdc_lcden);
235 	writel(value | LCDC_LCDEN_PWMEN, &regs->lcdc_lcden);
236 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
237 				true, 1000, false);
238 	if (ret)
239 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
240 
241 	/* Enable flushing if we enabled dcache */
242 	lcd_set_flush_dcache(1);
243 }
244 
245 #else
246 
247 enum {
248 	LCD_MAX_WIDTH		= 1024,
249 	LCD_MAX_HEIGHT		= 768,
250 	LCD_MAX_LOG2_BPP	= VIDEO_BPP16,
251 };
252 
253 struct atmel_hlcdc_priv {
254 	struct atmel_hlcd_regs *regs;
255 	struct display_timing timing;
256 	unsigned int vl_bpix;
257 	unsigned int output_mode;
258 	unsigned int guard_time;
259 	ulong clk_rate;
260 };
261 
262 static int at91_hlcdc_enable_clk(struct udevice *dev)
263 {
264 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
265 	struct clk clk;
266 	ulong clk_rate;
267 	int ret;
268 
269 	ret = clk_get_by_index(dev, 0, &clk);
270 	if (ret)
271 		return -EINVAL;
272 
273 	ret = clk_enable(&clk);
274 	if (ret)
275 		return ret;
276 
277 	clk_rate = clk_get_rate(&clk);
278 	if (!clk_rate) {
279 		clk_disable(&clk);
280 		return -ENODEV;
281 	}
282 
283 	priv->clk_rate = clk_rate;
284 
285 	clk_free(&clk);
286 
287 	return 0;
288 }
289 
290 static void atmel_hlcdc_init(struct udevice *dev)
291 {
292 	struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
293 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
294 	struct atmel_hlcd_regs *regs = priv->regs;
295 	struct display_timing *timing = &priv->timing;
296 	struct lcd_dma_desc *desc;
297 	unsigned long value, vl_clk_pol;
298 	int ret;
299 
300 	/* Disable DISP signal */
301 	writel(LCDC_LCDDIS_DISPDIS, &regs->lcdc_lcddis);
302 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
303 				false, 1000, false);
304 	if (ret)
305 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
306 	/* Disable synchronization */
307 	writel(LCDC_LCDDIS_SYNCDIS, &regs->lcdc_lcddis);
308 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
309 				false, 1000, false);
310 	if (ret)
311 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
312 	/* Disable pixel clock */
313 	writel(LCDC_LCDDIS_CLKDIS, &regs->lcdc_lcddis);
314 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
315 				false, 1000, false);
316 	if (ret)
317 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
318 	/* Disable PWM */
319 	writel(LCDC_LCDDIS_PWMDIS, &regs->lcdc_lcddis);
320 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
321 				false, 1000, false);
322 	if (ret)
323 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
324 
325 	/* Set pixel clock */
326 	value = priv->clk_rate / timing->pixelclock.typ;
327 	if (priv->clk_rate % timing->pixelclock.typ)
328 		value++;
329 
330 	vl_clk_pol = 0;
331 	if (timing->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
332 		vl_clk_pol = LCDC_LCDCFG0_CLKPOL;
333 
334 	if (value < 1) {
335 		/* Using system clock as pixel clock */
336 		writel(LCDC_LCDCFG0_CLKDIV(0)
337 			| LCDC_LCDCFG0_CGDISHCR
338 			| LCDC_LCDCFG0_CGDISHEO
339 			| LCDC_LCDCFG0_CGDISOVR1
340 			| LCDC_LCDCFG0_CGDISBASE
341 			| vl_clk_pol
342 			| LCDC_LCDCFG0_CLKSEL,
343 			&regs->lcdc_lcdcfg0);
344 
345 	} else {
346 		writel(LCDC_LCDCFG0_CLKDIV(value - 2)
347 			| LCDC_LCDCFG0_CGDISHCR
348 			| LCDC_LCDCFG0_CGDISHEO
349 			| LCDC_LCDCFG0_CGDISOVR1
350 			| LCDC_LCDCFG0_CGDISBASE
351 			| vl_clk_pol,
352 			&regs->lcdc_lcdcfg0);
353 	}
354 
355 	/* Initialize control register 5 */
356 	value = 0;
357 
358 	if (!(timing->flags & DISPLAY_FLAGS_HSYNC_HIGH))
359 		value |= LCDC_LCDCFG5_HSPOL;
360 	if (!(timing->flags & DISPLAY_FLAGS_VSYNC_HIGH))
361 		value |= LCDC_LCDCFG5_VSPOL;
362 
363 	switch (priv->output_mode) {
364 	case 12:
365 		value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP;
366 		break;
367 	case 16:
368 		value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP;
369 		break;
370 	case 18:
371 		value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP;
372 		break;
373 	case 24:
374 		value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
375 		break;
376 	default:
377 		BUG();
378 		break;
379 	}
380 
381 	value |= LCDC_LCDCFG5_GUARDTIME(priv->guard_time);
382 	value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS);
383 	writel(value, &regs->lcdc_lcdcfg5);
384 
385 	/* Vertical & Horizontal Timing */
386 	value = LCDC_LCDCFG1_VSPW(timing->vsync_len.typ - 1);
387 	value |= LCDC_LCDCFG1_HSPW(timing->hsync_len.typ - 1);
388 	writel(value, &regs->lcdc_lcdcfg1);
389 
390 	value = LCDC_LCDCFG2_VBPW(timing->vback_porch.typ);
391 	value |= LCDC_LCDCFG2_VFPW(timing->vfront_porch.typ - 1);
392 	writel(value, &regs->lcdc_lcdcfg2);
393 
394 	value = LCDC_LCDCFG3_HBPW(timing->hback_porch.typ - 1);
395 	value |= LCDC_LCDCFG3_HFPW(timing->hfront_porch.typ - 1);
396 	writel(value, &regs->lcdc_lcdcfg3);
397 
398 	/* Display size */
399 	value = LCDC_LCDCFG4_RPF(timing->vactive.typ - 1);
400 	value |= LCDC_LCDCFG4_PPL(timing->hactive.typ - 1);
401 	writel(value, &regs->lcdc_lcdcfg4);
402 
403 	writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO,
404 	       &regs->lcdc_basecfg0);
405 
406 	switch (VNBITS(priv->vl_bpix)) {
407 	case 16:
408 		writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565,
409 		       &regs->lcdc_basecfg1);
410 		break;
411 	case 32:
412 		writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888,
413 		       &regs->lcdc_basecfg1);
414 		break;
415 	default:
416 		BUG();
417 		break;
418 	}
419 
420 	writel(LCDC_BASECFG2_XSTRIDE(0), &regs->lcdc_basecfg2);
421 	writel(0, &regs->lcdc_basecfg3);
422 	writel(LCDC_BASECFG4_DMA, &regs->lcdc_basecfg4);
423 
424 	/* Disable all interrupts */
425 	writel(~0UL, &regs->lcdc_lcdidr);
426 	writel(~0UL, &regs->lcdc_baseidr);
427 
428 	/* Setup the DMA descriptor, this descriptor will loop to itself */
429 	desc = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*desc));
430 	if (!desc)
431 		return;
432 
433 	desc->address = (u32)uc_plat->base;
434 
435 	/* Disable DMA transfer interrupt & descriptor loaded interrupt. */
436 	desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN
437 			| LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH;
438 	desc->next = (u32)desc;
439 
440 	/* Flush the DMA descriptor if we enabled dcache */
441 	flush_dcache_range((u32)desc,
442 			   ALIGN(((u32)desc + sizeof(*desc)),
443 			   CONFIG_SYS_CACHELINE_SIZE));
444 
445 	writel(desc->address, &regs->lcdc_baseaddr);
446 	writel(desc->control, &regs->lcdc_basectrl);
447 	writel(desc->next, &regs->lcdc_basenext);
448 	writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN,
449 	       &regs->lcdc_basecher);
450 
451 	/* Enable LCD */
452 	value = readl(&regs->lcdc_lcden);
453 	writel(value | LCDC_LCDEN_CLKEN, &regs->lcdc_lcden);
454 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
455 				true, 1000, false);
456 	if (ret)
457 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
458 	value = readl(&regs->lcdc_lcden);
459 	writel(value | LCDC_LCDEN_SYNCEN, &regs->lcdc_lcden);
460 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
461 				true, 1000, false);
462 	if (ret)
463 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
464 	value = readl(&regs->lcdc_lcden);
465 	writel(value | LCDC_LCDEN_DISPEN, &regs->lcdc_lcden);
466 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
467 				true, 1000, false);
468 	if (ret)
469 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
470 	value = readl(&regs->lcdc_lcden);
471 	writel(value | LCDC_LCDEN_PWMEN, &regs->lcdc_lcden);
472 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
473 				true, 1000, false);
474 	if (ret)
475 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
476 }
477 
478 static int atmel_hlcdc_probe(struct udevice *dev)
479 {
480 	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
481 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
482 	int ret;
483 
484 	ret = at91_hlcdc_enable_clk(dev);
485 	if (ret)
486 		return ret;
487 
488 	atmel_hlcdc_init(dev);
489 
490 	uc_priv->xsize = priv->timing.hactive.typ;
491 	uc_priv->ysize = priv->timing.vactive.typ;
492 	uc_priv->bpix = priv->vl_bpix;
493 
494 	/* Enable flushing if we enabled dcache */
495 	video_set_flush_dcache(dev, true);
496 
497 	return 0;
498 }
499 
500 static int atmel_hlcdc_ofdata_to_platdata(struct udevice *dev)
501 {
502 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
503 	const void *blob = gd->fdt_blob;
504 	int node = dev_of_offset(dev);
505 
506 	priv->regs = (struct atmel_hlcd_regs *)devfdt_get_addr(dev);
507 	if (!priv->regs) {
508 		debug("%s: No display controller address\n", __func__);
509 		return -EINVAL;
510 	}
511 
512 	if (fdtdec_decode_display_timing(blob, dev_of_offset(dev),
513 					 0, &priv->timing)) {
514 		debug("%s: Failed to decode display timing\n", __func__);
515 		return -EINVAL;
516 	}
517 
518 	if (priv->timing.hactive.typ > LCD_MAX_WIDTH)
519 		priv->timing.hactive.typ = LCD_MAX_WIDTH;
520 
521 	if (priv->timing.vactive.typ > LCD_MAX_HEIGHT)
522 		priv->timing.vactive.typ = LCD_MAX_HEIGHT;
523 
524 	priv->vl_bpix = fdtdec_get_int(blob, node, "atmel,vl-bpix", 0);
525 	if (!priv->vl_bpix) {
526 		debug("%s: Failed to get bits per pixel\n", __func__);
527 		return -EINVAL;
528 	}
529 
530 	priv->output_mode = fdtdec_get_int(blob, node, "atmel,output-mode", 24);
531 	priv->guard_time = fdtdec_get_int(blob, node, "atmel,guard-time", 1);
532 
533 	return 0;
534 }
535 
536 static int atmel_hlcdc_bind(struct udevice *dev)
537 {
538 	struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
539 
540 	uc_plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
541 				(1 << LCD_MAX_LOG2_BPP) / 8;
542 
543 	debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
544 
545 	return 0;
546 }
547 
548 static const struct udevice_id atmel_hlcdc_ids[] = {
549 	{ .compatible = "atmel,sama5d2-hlcdc" },
550 	{ .compatible = "atmel,at91sam9x5-hlcdc" },
551 	{ }
552 };
553 
554 U_BOOT_DRIVER(atmel_hlcdfb) = {
555 	.name	= "atmel_hlcdfb",
556 	.id	= UCLASS_VIDEO,
557 	.of_match = atmel_hlcdc_ids,
558 	.bind	= atmel_hlcdc_bind,
559 	.probe	= atmel_hlcdc_probe,
560 	.ofdata_to_platdata = atmel_hlcdc_ofdata_to_platdata,
561 	.priv_auto_alloc_size = sizeof(struct atmel_hlcdc_priv),
562 };
563 
564 #endif
565