xref: /openbmc/u-boot/drivers/video/atmel_hlcdfb.c (revision 88dc4099) 
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Driver for AT91/AT32 MULTI LAYER LCD Controller
4  *
5  * Copyright (C) 2012 Atmel Corporation
6  */
7 
8 #include <common.h>
9 #include <asm/io.h>
10 #include <asm/arch/gpio.h>
11 #include <asm/arch/clk.h>
12 #include <clk.h>
13 #include <dm.h>
14 #include <fdtdec.h>
15 #include <lcd.h>
16 #include <video.h>
17 #include <wait_bit.h>
18 #include <atmel_hlcdc.h>
19 
20 #if defined(CONFIG_LCD_LOGO)
21 #include <bmp_logo.h>
22 #endif
23 
24 DECLARE_GLOBAL_DATA_PTR;
25 
26 #ifndef CONFIG_DM_VIDEO
27 
28 /* configurable parameters */
29 #define ATMEL_LCDC_CVAL_DEFAULT		0xc8
30 #define ATMEL_LCDC_DMA_BURST_LEN	8
31 #ifndef ATMEL_LCDC_GUARD_TIME
32 #define ATMEL_LCDC_GUARD_TIME		1
33 #endif
34 
35 #define ATMEL_LCDC_FIFO_SIZE		512
36 
37 /*
38  * the CLUT register map as following
39  * RCLUT(24 ~ 16), GCLUT(15 ~ 8), BCLUT(7 ~ 0)
40  */
41 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
42 {
43 	writel(panel_info.mmio + ATMEL_LCDC_LUT(regno),
44 	       ((red << LCDC_BASECLUT_RCLUT_Pos) & LCDC_BASECLUT_RCLUT_Msk)
45 	       | ((green << LCDC_BASECLUT_GCLUT_Pos) & LCDC_BASECLUT_GCLUT_Msk)
46 	       | ((blue << LCDC_BASECLUT_BCLUT_Pos) & LCDC_BASECLUT_BCLUT_Msk));
47 }
48 
49 ushort *configuration_get_cmap(void)
50 {
51 #if defined(CONFIG_LCD_LOGO)
52 	return bmp_logo_palette;
53 #else
54 	return NULL;
55 #endif
56 }
57 
58 void lcd_ctrl_init(void *lcdbase)
59 {
60 	unsigned long value;
61 	struct lcd_dma_desc *desc;
62 	struct atmel_hlcd_regs *regs;
63 	int ret;
64 
65 	if (!has_lcdc())
66 		return;     /* No lcdc */
67 
68 	regs = (struct atmel_hlcd_regs *)panel_info.mmio;
69 
70 	/* Disable DISP signal */
71 	writel(LCDC_LCDDIS_DISPDIS, &regs->lcdc_lcddis);
72 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
73 				false, 1000, false);
74 	if (ret)
75 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
76 	/* Disable synchronization */
77 	writel(LCDC_LCDDIS_SYNCDIS, &regs->lcdc_lcddis);
78 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
79 				false, 1000, false);
80 	if (ret)
81 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
82 	/* Disable pixel clock */
83 	writel(LCDC_LCDDIS_CLKDIS, &regs->lcdc_lcddis);
84 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
85 				false, 1000, false);
86 	if (ret)
87 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
88 	/* Disable PWM */
89 	writel(LCDC_LCDDIS_PWMDIS, &regs->lcdc_lcddis);
90 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
91 				false, 1000, false);
92 	if (ret)
93 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
94 
95 	/* Set pixel clock */
96 	value = get_lcdc_clk_rate(0) / panel_info.vl_clk;
97 	if (get_lcdc_clk_rate(0) % panel_info.vl_clk)
98 		value++;
99 
100 	if (value < 1) {
101 		/* Using system clock as pixel clock */
102 		writel(LCDC_LCDCFG0_CLKDIV(0)
103 			| LCDC_LCDCFG0_CGDISHCR
104 			| LCDC_LCDCFG0_CGDISHEO
105 			| LCDC_LCDCFG0_CGDISOVR1
106 			| LCDC_LCDCFG0_CGDISBASE
107 			| panel_info.vl_clk_pol
108 			| LCDC_LCDCFG0_CLKSEL,
109 			&regs->lcdc_lcdcfg0);
110 
111 	} else {
112 		writel(LCDC_LCDCFG0_CLKDIV(value - 2)
113 			| LCDC_LCDCFG0_CGDISHCR
114 			| LCDC_LCDCFG0_CGDISHEO
115 			| LCDC_LCDCFG0_CGDISOVR1
116 			| LCDC_LCDCFG0_CGDISBASE
117 			| panel_info.vl_clk_pol,
118 			&regs->lcdc_lcdcfg0);
119 	}
120 
121 	/* Initialize control register 5 */
122 	value = 0;
123 
124 	value |= panel_info.vl_sync;
125 
126 #ifndef LCD_OUTPUT_BPP
127 	/* Output is 24bpp */
128 	value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
129 #else
130 	switch (LCD_OUTPUT_BPP) {
131 	case 12:
132 		value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP;
133 		break;
134 	case 16:
135 		value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP;
136 		break;
137 	case 18:
138 		value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP;
139 		break;
140 	case 24:
141 		value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
142 		break;
143 	default:
144 		BUG();
145 		break;
146 	}
147 #endif
148 
149 	value |= LCDC_LCDCFG5_GUARDTIME(ATMEL_LCDC_GUARD_TIME);
150 	value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS);
151 	writel(value, &regs->lcdc_lcdcfg5);
152 
153 	/* Vertical & Horizontal Timing */
154 	value = LCDC_LCDCFG1_VSPW(panel_info.vl_vsync_len - 1);
155 	value |= LCDC_LCDCFG1_HSPW(panel_info.vl_hsync_len - 1);
156 	writel(value, &regs->lcdc_lcdcfg1);
157 
158 	value = LCDC_LCDCFG2_VBPW(panel_info.vl_upper_margin);
159 	value |= LCDC_LCDCFG2_VFPW(panel_info.vl_lower_margin - 1);
160 	writel(value, &regs->lcdc_lcdcfg2);
161 
162 	value = LCDC_LCDCFG3_HBPW(panel_info.vl_left_margin - 1);
163 	value |= LCDC_LCDCFG3_HFPW(panel_info.vl_right_margin - 1);
164 	writel(value, &regs->lcdc_lcdcfg3);
165 
166 	/* Display size */
167 	value = LCDC_LCDCFG4_RPF(panel_info.vl_row - 1);
168 	value |= LCDC_LCDCFG4_PPL(panel_info.vl_col - 1);
169 	writel(value, &regs->lcdc_lcdcfg4);
170 
171 	writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO,
172 	       &regs->lcdc_basecfg0);
173 
174 	switch (NBITS(panel_info.vl_bpix)) {
175 	case 16:
176 		writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565,
177 		       &regs->lcdc_basecfg1);
178 		break;
179 	case 32:
180 		writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888,
181 		       &regs->lcdc_basecfg1);
182 		break;
183 	default:
184 		BUG();
185 		break;
186 	}
187 
188 	writel(LCDC_BASECFG2_XSTRIDE(0), &regs->lcdc_basecfg2);
189 	writel(0, &regs->lcdc_basecfg3);
190 	writel(LCDC_BASECFG4_DMA, &regs->lcdc_basecfg4);
191 
192 	/* Disable all interrupts */
193 	writel(~0UL, &regs->lcdc_lcdidr);
194 	writel(~0UL, &regs->lcdc_baseidr);
195 
196 	/* Setup the DMA descriptor, this descriptor will loop to itself */
197 	desc = (struct lcd_dma_desc *)(lcdbase - 16);
198 
199 	desc->address = (u32)lcdbase;
200 	/* Disable DMA transfer interrupt & descriptor loaded interrupt. */
201 	desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN
202 			| LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH;
203 	desc->next = (u32)desc;
204 
205 	/* Flush the DMA descriptor if we enabled dcache */
206 	flush_dcache_range((u32)desc, (u32)desc + sizeof(*desc));
207 
208 	writel(desc->address, &regs->lcdc_baseaddr);
209 	writel(desc->control, &regs->lcdc_basectrl);
210 	writel(desc->next, &regs->lcdc_basenext);
211 	writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN,
212 	       &regs->lcdc_basecher);
213 
214 	/* Enable LCD */
215 	value = readl(&regs->lcdc_lcden);
216 	writel(value | LCDC_LCDEN_CLKEN, &regs->lcdc_lcden);
217 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
218 				true, 1000, false);
219 	if (ret)
220 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
221 	value = readl(&regs->lcdc_lcden);
222 	writel(value | LCDC_LCDEN_SYNCEN, &regs->lcdc_lcden);
223 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
224 				true, 1000, false);
225 	if (ret)
226 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
227 	value = readl(&regs->lcdc_lcden);
228 	writel(value | LCDC_LCDEN_DISPEN, &regs->lcdc_lcden);
229 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
230 				true, 1000, false);
231 	if (ret)
232 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
233 	value = readl(&regs->lcdc_lcden);
234 	writel(value | LCDC_LCDEN_PWMEN, &regs->lcdc_lcden);
235 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
236 				true, 1000, false);
237 	if (ret)
238 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
239 
240 	/* Enable flushing if we enabled dcache */
241 	lcd_set_flush_dcache(1);
242 }
243 
244 #else
245 
246 enum {
247 	LCD_MAX_WIDTH		= 1024,
248 	LCD_MAX_HEIGHT		= 768,
249 	LCD_MAX_LOG2_BPP	= VIDEO_BPP16,
250 };
251 
252 struct atmel_hlcdc_priv {
253 	struct atmel_hlcd_regs *regs;
254 	struct display_timing timing;
255 	unsigned int vl_bpix;
256 	unsigned int output_mode;
257 	unsigned int guard_time;
258 	ulong clk_rate;
259 };
260 
261 static int at91_hlcdc_enable_clk(struct udevice *dev)
262 {
263 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
264 	struct clk clk;
265 	ulong clk_rate;
266 	int ret;
267 
268 	ret = clk_get_by_index(dev, 0, &clk);
269 	if (ret)
270 		return -EINVAL;
271 
272 	ret = clk_enable(&clk);
273 	if (ret)
274 		return ret;
275 
276 	clk_rate = clk_get_rate(&clk);
277 	if (!clk_rate) {
278 		clk_disable(&clk);
279 		return -ENODEV;
280 	}
281 
282 	priv->clk_rate = clk_rate;
283 
284 	clk_free(&clk);
285 
286 	return 0;
287 }
288 
289 static void atmel_hlcdc_init(struct udevice *dev)
290 {
291 	struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
292 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
293 	struct atmel_hlcd_regs *regs = priv->regs;
294 	struct display_timing *timing = &priv->timing;
295 	struct lcd_dma_desc *desc;
296 	unsigned long value, vl_clk_pol;
297 	int ret;
298 
299 	/* Disable DISP signal */
300 	writel(LCDC_LCDDIS_DISPDIS, &regs->lcdc_lcddis);
301 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
302 				false, 1000, false);
303 	if (ret)
304 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
305 	/* Disable synchronization */
306 	writel(LCDC_LCDDIS_SYNCDIS, &regs->lcdc_lcddis);
307 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
308 				false, 1000, false);
309 	if (ret)
310 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
311 	/* Disable pixel clock */
312 	writel(LCDC_LCDDIS_CLKDIS, &regs->lcdc_lcddis);
313 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
314 				false, 1000, false);
315 	if (ret)
316 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
317 	/* Disable PWM */
318 	writel(LCDC_LCDDIS_PWMDIS, &regs->lcdc_lcddis);
319 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
320 				false, 1000, false);
321 	if (ret)
322 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
323 
324 	/* Set pixel clock */
325 	value = priv->clk_rate / timing->pixelclock.typ;
326 	if (priv->clk_rate % timing->pixelclock.typ)
327 		value++;
328 
329 	vl_clk_pol = 0;
330 	if (timing->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
331 		vl_clk_pol = LCDC_LCDCFG0_CLKPOL;
332 
333 	if (value < 1) {
334 		/* Using system clock as pixel clock */
335 		writel(LCDC_LCDCFG0_CLKDIV(0)
336 			| LCDC_LCDCFG0_CGDISHCR
337 			| LCDC_LCDCFG0_CGDISHEO
338 			| LCDC_LCDCFG0_CGDISOVR1
339 			| LCDC_LCDCFG0_CGDISBASE
340 			| vl_clk_pol
341 			| LCDC_LCDCFG0_CLKSEL,
342 			&regs->lcdc_lcdcfg0);
343 
344 	} else {
345 		writel(LCDC_LCDCFG0_CLKDIV(value - 2)
346 			| LCDC_LCDCFG0_CGDISHCR
347 			| LCDC_LCDCFG0_CGDISHEO
348 			| LCDC_LCDCFG0_CGDISOVR1
349 			| LCDC_LCDCFG0_CGDISBASE
350 			| vl_clk_pol,
351 			&regs->lcdc_lcdcfg0);
352 	}
353 
354 	/* Initialize control register 5 */
355 	value = 0;
356 
357 	if (!(timing->flags & DISPLAY_FLAGS_HSYNC_HIGH))
358 		value |= LCDC_LCDCFG5_HSPOL;
359 	if (!(timing->flags & DISPLAY_FLAGS_VSYNC_HIGH))
360 		value |= LCDC_LCDCFG5_VSPOL;
361 
362 	switch (priv->output_mode) {
363 	case 12:
364 		value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP;
365 		break;
366 	case 16:
367 		value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP;
368 		break;
369 	case 18:
370 		value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP;
371 		break;
372 	case 24:
373 		value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP;
374 		break;
375 	default:
376 		BUG();
377 		break;
378 	}
379 
380 	value |= LCDC_LCDCFG5_GUARDTIME(priv->guard_time);
381 	value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS);
382 	writel(value, &regs->lcdc_lcdcfg5);
383 
384 	/* Vertical & Horizontal Timing */
385 	value = LCDC_LCDCFG1_VSPW(timing->vsync_len.typ - 1);
386 	value |= LCDC_LCDCFG1_HSPW(timing->hsync_len.typ - 1);
387 	writel(value, &regs->lcdc_lcdcfg1);
388 
389 	value = LCDC_LCDCFG2_VBPW(timing->vback_porch.typ);
390 	value |= LCDC_LCDCFG2_VFPW(timing->vfront_porch.typ - 1);
391 	writel(value, &regs->lcdc_lcdcfg2);
392 
393 	value = LCDC_LCDCFG3_HBPW(timing->hback_porch.typ - 1);
394 	value |= LCDC_LCDCFG3_HFPW(timing->hfront_porch.typ - 1);
395 	writel(value, &regs->lcdc_lcdcfg3);
396 
397 	/* Display size */
398 	value = LCDC_LCDCFG4_RPF(timing->vactive.typ - 1);
399 	value |= LCDC_LCDCFG4_PPL(timing->hactive.typ - 1);
400 	writel(value, &regs->lcdc_lcdcfg4);
401 
402 	writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO,
403 	       &regs->lcdc_basecfg0);
404 
405 	switch (VNBITS(priv->vl_bpix)) {
406 	case 16:
407 		writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565,
408 		       &regs->lcdc_basecfg1);
409 		break;
410 	case 32:
411 		writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888,
412 		       &regs->lcdc_basecfg1);
413 		break;
414 	default:
415 		BUG();
416 		break;
417 	}
418 
419 	writel(LCDC_BASECFG2_XSTRIDE(0), &regs->lcdc_basecfg2);
420 	writel(0, &regs->lcdc_basecfg3);
421 	writel(LCDC_BASECFG4_DMA, &regs->lcdc_basecfg4);
422 
423 	/* Disable all interrupts */
424 	writel(~0UL, &regs->lcdc_lcdidr);
425 	writel(~0UL, &regs->lcdc_baseidr);
426 
427 	/* Setup the DMA descriptor, this descriptor will loop to itself */
428 	desc = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*desc));
429 	if (!desc)
430 		return;
431 
432 	desc->address = (u32)uc_plat->base;
433 
434 	/* Disable DMA transfer interrupt & descriptor loaded interrupt. */
435 	desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN
436 			| LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH;
437 	desc->next = (u32)desc;
438 
439 	/* Flush the DMA descriptor if we enabled dcache */
440 	flush_dcache_range((u32)desc,
441 			   ALIGN(((u32)desc + sizeof(*desc)),
442 			   CONFIG_SYS_CACHELINE_SIZE));
443 
444 	writel(desc->address, &regs->lcdc_baseaddr);
445 	writel(desc->control, &regs->lcdc_basectrl);
446 	writel(desc->next, &regs->lcdc_basenext);
447 	writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN,
448 	       &regs->lcdc_basecher);
449 
450 	/* Enable LCD */
451 	value = readl(&regs->lcdc_lcden);
452 	writel(value | LCDC_LCDEN_CLKEN, &regs->lcdc_lcden);
453 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_CLKSTS,
454 				true, 1000, false);
455 	if (ret)
456 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
457 	value = readl(&regs->lcdc_lcden);
458 	writel(value | LCDC_LCDEN_SYNCEN, &regs->lcdc_lcden);
459 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_LCDSTS,
460 				true, 1000, false);
461 	if (ret)
462 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
463 	value = readl(&regs->lcdc_lcden);
464 	writel(value | LCDC_LCDEN_DISPEN, &regs->lcdc_lcden);
465 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_DISPSTS,
466 				true, 1000, false);
467 	if (ret)
468 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
469 	value = readl(&regs->lcdc_lcden);
470 	writel(value | LCDC_LCDEN_PWMEN, &regs->lcdc_lcden);
471 	ret = wait_for_bit_le32(&regs->lcdc_lcdsr, LCDC_LCDSR_PWMSTS,
472 				true, 1000, false);
473 	if (ret)
474 		printf("%s: %d: Timeout!\n", __func__, __LINE__);
475 }
476 
477 static int atmel_hlcdc_probe(struct udevice *dev)
478 {
479 	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
480 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
481 	int ret;
482 
483 	ret = at91_hlcdc_enable_clk(dev);
484 	if (ret)
485 		return ret;
486 
487 	atmel_hlcdc_init(dev);
488 
489 	uc_priv->xsize = priv->timing.hactive.typ;
490 	uc_priv->ysize = priv->timing.vactive.typ;
491 	uc_priv->bpix = priv->vl_bpix;
492 
493 	/* Enable flushing if we enabled dcache */
494 	video_set_flush_dcache(dev, true);
495 
496 	return 0;
497 }
498 
499 static int atmel_hlcdc_ofdata_to_platdata(struct udevice *dev)
500 {
501 	struct atmel_hlcdc_priv *priv = dev_get_priv(dev);
502 	const void *blob = gd->fdt_blob;
503 	int node = dev_of_offset(dev);
504 
505 	priv->regs = (struct atmel_hlcd_regs *)devfdt_get_addr(dev);
506 	if (!priv->regs) {
507 		debug("%s: No display controller address\n", __func__);
508 		return -EINVAL;
509 	}
510 
511 	if (fdtdec_decode_display_timing(blob, dev_of_offset(dev),
512 					 0, &priv->timing)) {
513 		debug("%s: Failed to decode display timing\n", __func__);
514 		return -EINVAL;
515 	}
516 
517 	if (priv->timing.hactive.typ > LCD_MAX_WIDTH)
518 		priv->timing.hactive.typ = LCD_MAX_WIDTH;
519 
520 	if (priv->timing.vactive.typ > LCD_MAX_HEIGHT)
521 		priv->timing.vactive.typ = LCD_MAX_HEIGHT;
522 
523 	priv->vl_bpix = fdtdec_get_int(blob, node, "atmel,vl-bpix", 0);
524 	if (!priv->vl_bpix) {
525 		debug("%s: Failed to get bits per pixel\n", __func__);
526 		return -EINVAL;
527 	}
528 
529 	priv->output_mode = fdtdec_get_int(blob, node, "atmel,output-mode", 24);
530 	priv->guard_time = fdtdec_get_int(blob, node, "atmel,guard-time", 1);
531 
532 	return 0;
533 }
534 
535 static int atmel_hlcdc_bind(struct udevice *dev)
536 {
537 	struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
538 
539 	uc_plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
540 				(1 << LCD_MAX_LOG2_BPP) / 8;
541 
542 	debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
543 
544 	return 0;
545 }
546 
547 static const struct udevice_id atmel_hlcdc_ids[] = {
548 	{ .compatible = "atmel,sama5d2-hlcdc" },
549 	{ .compatible = "atmel,at91sam9x5-hlcdc" },
550 	{ }
551 };
552 
553 U_BOOT_DRIVER(atmel_hlcdfb) = {
554 	.name	= "atmel_hlcdfb",
555 	.id	= UCLASS_VIDEO,
556 	.of_match = atmel_hlcdc_ids,
557 	.bind	= atmel_hlcdc_bind,
558 	.probe	= atmel_hlcdc_probe,
559 	.ofdata_to_platdata = atmel_hlcdc_ofdata_to_platdata,
560 	.priv_auto_alloc_size = sizeof(struct atmel_hlcdc_priv),
561 };
562 
563 #endif
564