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Mike Frysinger8b219cf2008-10-12 21:54:07 -04001/*
2 * video.c - run splash screen on lcd
3 *
4 * Copyright (c) 2007-2008 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9#include <stdarg.h>
10#include <common.h>
11#include <config.h>
12#include <malloc.h>
13#include <asm/blackfin.h>
Tom Rini130fbeb2014-02-20 10:14:10 -050014#include <asm/clock.h>
Mike Frysingerb14fff82010-06-02 19:30:15 -040015#include <asm/gpio.h>
16#include <asm/portmux.h>
Mike Frysinger8b219cf2008-10-12 21:54:07 -040017#include <asm/mach-common/bits/dma.h>
18#include <i2c.h>
19#include <linux/types.h>
Mike Frysingercb95c7a2009-09-02 05:52:37 -040020#include <stdio_dev.h>
Mike Frysinger8b219cf2008-10-12 21:54:07 -040021
Mike Frysinger42c6e9a2012-02-03 20:44:54 -050022#include <lzma/LzmaTypes.h>
23#include <lzma/LzmaDec.h>
24#include <lzma/LzmaTools.h>
Mike Frysinger8b219cf2008-10-12 21:54:07 -040025
26#define DMA_SIZE16 2
27
28#include <asm/mach-common/bits/eppi.h>
29
Mike Frysinger42c6e9a2012-02-03 20:44:54 -050030#include EASYLOGO_HEADER
Mike Frysinger8b219cf2008-10-12 21:54:07 -040031
32#define LCD_X_RES 480 /*Horizontal Resolution */
33#define LCD_Y_RES 272 /* Vertical Resolution */
34
35#define LCD_BPP 24 /* Bit Per Pixel */
36#define LCD_PIXEL_SIZE (LCD_BPP / 8)
37#define DMA_BUS_SIZE 32
38#define ACTIVE_VIDEO_MEM_OFFSET 0
39
40/* -- Horizontal synchronizing --
41 *
42 * Timing characteristics taken from the SHARP LQ043T1DG01 datasheet
43 * (LCY-W-06602A Page 9 of 22)
44 *
45 * Clock Frequency 1/Tc Min 7.83 Typ 9.00 Max 9.26 MHz
46 *
47 * Period TH - 525 - Clock
48 * Pulse width THp - 41 - Clock
49 * Horizontal period THd - 480 - Clock
50 * Back porch THb - 2 - Clock
51 * Front porch THf - 2 - Clock
52 *
53 * -- Vertical synchronizing --
54 * Period TV - 286 - Line
55 * Pulse width TVp - 10 - Line
56 * Vertical period TVd - 272 - Line
57 * Back porch TVb - 2 - Line
58 * Front porch TVf - 2 - Line
59 */
60
61#define LCD_CLK (8*1000*1000) /* 8MHz */
62
63/* # active data to transfer after Horizontal Delay clock */
64#define EPPI_HCOUNT LCD_X_RES
65
66/* # active lines to transfer after Vertical Delay clock */
67#define EPPI_VCOUNT LCD_Y_RES
68
69/* Samples per Line = 480 (active data) + 45 (padding) */
70#define EPPI_LINE 525
71
72/* Lines per Frame = 272 (active data) + 14 (padding) */
73#define EPPI_FRAME 286
74
75/* FS1 (Hsync) Width (Typical)*/
76#define EPPI_FS1W_HBL 41
77
78/* FS1 (Hsync) Period (Typical) */
79#define EPPI_FS1P_AVPL EPPI_LINE
80
81/* Horizontal Delay clock after assertion of Hsync (Typical) */
82#define EPPI_HDELAY 43
83
84/* FS2 (Vsync) Width = FS1 (Hsync) Period * 10 */
85#define EPPI_FS2W_LVB (EPPI_LINE * 10)
86
87 /* FS2 (Vsync) Period = FS1 (Hsync) Period * Lines per Frame */
88#define EPPI_FS2P_LAVF (EPPI_LINE * EPPI_FRAME)
89
90/* Vertical Delay after assertion of Vsync (2 Lines) */
91#define EPPI_VDELAY 12
92
93#define EPPI_CLIP 0xFF00FF00
94
95/* EPPI Control register configuration value for RGB out
96 * - EPPI as Output
97 * GP 2 frame sync mode,
98 * Internal Clock generation disabled, Internal FS generation enabled,
99 * Receives samples on EPPI_CLK raising edge, Transmits samples on EPPI_CLK falling edge,
100 * FS1 & FS2 are active high,
101 * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
102 * DMA Unpacking disabled when RGB Formating is enabled, otherwise DMA unpacking enabled
103 * Swapping Enabled,
104 * One (DMA) Channel Mode,
105 * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
106 * Regular watermark - when FIFO is 100% full,
107 * Urgent watermark - when FIFO is 75% full
108 */
109
110#define EPPI_CONTROL (0x20136E2E)
111
112static inline u16 get_eppi_clkdiv(u32 target_ppi_clk)
113{
114 u32 sclk = get_sclk();
115
116 /* EPPI_CLK = (SCLK) / (2 * (EPPI_CLKDIV[15:0] + 1)) */
117
118 return (((sclk / target_ppi_clk) / 2) - 1);
119}
120
121void Init_PPI(void)
122{
123 u16 eppi_clkdiv = get_eppi_clkdiv(LCD_CLK);
124
125 bfin_write_EPPI0_FS1W_HBL(EPPI_FS1W_HBL);
126 bfin_write_EPPI0_FS1P_AVPL(EPPI_FS1P_AVPL);
127 bfin_write_EPPI0_FS2W_LVB(EPPI_FS2W_LVB);
128 bfin_write_EPPI0_FS2P_LAVF(EPPI_FS2P_LAVF);
129 bfin_write_EPPI0_CLIP(EPPI_CLIP);
130
131 bfin_write_EPPI0_FRAME(EPPI_FRAME);
132 bfin_write_EPPI0_LINE(EPPI_LINE);
133
134 bfin_write_EPPI0_HCOUNT(EPPI_HCOUNT);
135 bfin_write_EPPI0_HDELAY(EPPI_HDELAY);
136 bfin_write_EPPI0_VCOUNT(EPPI_VCOUNT);
137 bfin_write_EPPI0_VDELAY(EPPI_VDELAY);
138
139 bfin_write_EPPI0_CLKDIV(eppi_clkdiv);
140
141/*
142 * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
143 * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
144 */
145#if defined(CONFIG_VIDEO_RGB666)
146 bfin_write_EPPI0_CONTROL((EPPI_CONTROL & ~DLENGTH) | DLEN_18 |
147 RGB_FMT_EN);
148#else
149 bfin_write_EPPI0_CONTROL(((EPPI_CONTROL & ~DLENGTH) | DLEN_24) &
150 ~RGB_FMT_EN);
151#endif
152
153}
154
155#define DEB2_URGENT 0x2000 /* DEB2 Urgent */
156
157void Init_DMA(void *dst)
158{
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400159#if defined(CONFIG_DEB_DMA_URGENT)
Mike Frysinger51821862010-07-25 17:19:16 -0400160 bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE() | DEB2_URGENT);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400161#endif
162
Mike Frysinger51821862010-07-25 17:19:16 -0400163 bfin_write_DMA12_START_ADDR(dst);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400164
165 /* X count */
Mike Frysinger51821862010-07-25 17:19:16 -0400166 bfin_write_DMA12_X_COUNT((LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
167 bfin_write_DMA12_X_MODIFY(DMA_BUS_SIZE / 8);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400168
169 /* Y count */
Mike Frysinger51821862010-07-25 17:19:16 -0400170 bfin_write_DMA12_Y_COUNT(LCD_Y_RES);
171 bfin_write_DMA12_Y_MODIFY(DMA_BUS_SIZE / 8);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400172
173 /* DMA Config */
Mike Frysinger51821862010-07-25 17:19:16 -0400174 bfin_write_DMA12_CONFIG(
175 WDSIZE_32 | /* 32 bit DMA */
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400176 DMA2D | /* 2D DMA */
Mike Frysinger51821862010-07-25 17:19:16 -0400177 FLOW_AUTO /* autobuffer mode */
178 );
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400179}
180
181void Init_Ports(void)
182{
Mike Frysingerb14fff82010-06-02 19:30:15 -0400183 const unsigned short pins[] = {
184 P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3, P_PPI0_D4,
185 P_PPI0_D5, P_PPI0_D6, P_PPI0_D7, P_PPI0_D8, P_PPI0_D9,
186 P_PPI0_D10, P_PPI0_D11, P_PPI0_D12, P_PPI0_D13, P_PPI0_D14,
187 P_PPI0_D15, P_PPI0_D16, P_PPI0_D17,
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400188#if !defined(CONFIG_VIDEO_RGB666)
Mike Frysingerb14fff82010-06-02 19:30:15 -0400189 P_PPI0_D18, P_PPI0_D19, P_PPI0_D20, P_PPI0_D21, P_PPI0_D22,
190 P_PPI0_D23,
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400191#endif
Mike Frysingerb14fff82010-06-02 19:30:15 -0400192 P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, 0,
193 };
194 peripheral_request_list(pins, "lcd");
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400195
Mike Frysingerb14fff82010-06-02 19:30:15 -0400196 gpio_request(GPIO_PE3, "lcd-disp");
197 gpio_direction_output(GPIO_PE3, 1);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400198}
199
200void EnableDMA(void)
201{
Mike Frysinger51821862010-07-25 17:19:16 -0400202 bfin_write_DMA12_CONFIG(bfin_read_DMA12_CONFIG() | DMAEN);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400203}
204
205void DisableDMA(void)
206{
Mike Frysinger51821862010-07-25 17:19:16 -0400207 bfin_write_DMA12_CONFIG(bfin_read_DMA12_CONFIG() & ~DMAEN);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400208}
209
210/* enable and disable PPI functions */
211void EnablePPI(void)
212{
213 bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
214}
215
216void DisablePPI(void)
217{
218 bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
219}
220
221int video_init(void *dst)
222{
223 Init_Ports();
224 Init_DMA(dst);
225 EnableDMA();
226 Init_PPI();
227 EnablePPI();
228
229 return 0;
230}
231
Michael Hennerich5fc564e2009-08-07 02:47:54 +0000232void video_stop(void)
233{
234 DisablePPI();
235 DisableDMA();
236}
237
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400238static void dma_bitblit(void *dst, fastimage_t *logo, int x, int y)
239{
240 if (dcache_status())
241 blackfin_dcache_flush_range(logo->data,
242 logo->data + logo->size);
243
244 bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
245
246 /* Setup destination start address */
247 bfin_write_MDMA_D0_START_ADDR(dst + ((x & -2) * LCD_PIXEL_SIZE)
248 + (y * LCD_X_RES * LCD_PIXEL_SIZE));
249 /* Setup destination xcount */
250 bfin_write_MDMA_D0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
251 /* Setup destination xmodify */
252 bfin_write_MDMA_D0_X_MODIFY(DMA_SIZE16);
253
254 /* Setup destination ycount */
255 bfin_write_MDMA_D0_Y_COUNT(logo->height);
256 /* Setup destination ymodify */
257 bfin_write_MDMA_D0_Y_MODIFY((LCD_X_RES - logo->width) * LCD_PIXEL_SIZE +
258 DMA_SIZE16);
259
260 /* Setup Source start address */
261 bfin_write_MDMA_S0_START_ADDR(logo->data);
262 /* Setup Source xcount */
263 bfin_write_MDMA_S0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
264 /* Setup Source xmodify */
265 bfin_write_MDMA_S0_X_MODIFY(DMA_SIZE16);
266
267 /* Setup Source ycount */
268 bfin_write_MDMA_S0_Y_COUNT(logo->height);
269 /* Setup Source ymodify */
270 bfin_write_MDMA_S0_Y_MODIFY(DMA_SIZE16);
271
272 /* Enable source DMA */
273 bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16 | DMA2D);
274 SSYNC();
275 bfin_write_MDMA_D0_CONFIG(WNR | DMAEN | WDSIZE_16 | DMA2D);
276
277 while (bfin_read_MDMA_D0_IRQ_STATUS() & DMA_RUN) ;
278
279 bfin_write_MDMA_S0_IRQ_STATUS(bfin_read_MDMA_S0_IRQ_STATUS() | DMA_DONE
280 | DMA_ERR);
281 bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE
282 | DMA_ERR);
283
284}
285
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400286int drv_video_init(void)
287{
288 int error, devices = 1;
Mike Frysingercb95c7a2009-09-02 05:52:37 -0400289 struct stdio_dev videodev;
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400290
291 u8 *dst;
292 u32 fbmem_size =
293 LCD_X_RES * LCD_Y_RES * LCD_PIXEL_SIZE + ACTIVE_VIDEO_MEM_OFFSET;
294
295 dst = malloc(fbmem_size);
296
297 if (dst == NULL) {
298 printf("Failed to alloc FB memory\n");
299 return -1;
300 }
Mike Frysinger42c6e9a2012-02-03 20:44:54 -0500301
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400302#ifdef EASYLOGO_ENABLE_GZIP
303 unsigned char *data = EASYLOGO_DECOMP_BUFFER;
304 unsigned long src_len = EASYLOGO_ENABLE_GZIP;
Mike Frysinger42c6e9a2012-02-03 20:44:54 -0500305 error = gunzip(data, bfin_logo.size, bfin_logo.data, &src_len);
306 bfin_logo.data = data;
307#elif defined(EASYLOGO_ENABLE_LZMA)
308 unsigned char *data = EASYLOGO_DECOMP_BUFFER;
309 SizeT lzma_len = bfin_logo.size;
310 error = lzmaBuffToBuffDecompress(data, &lzma_len,
311 bfin_logo.data, EASYLOGO_ENABLE_LZMA);
312 bfin_logo.data = data;
313#else
314 error = 0;
315#endif
316
317 if (error) {
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400318 puts("Failed to decompress logo\n");
319 free(dst);
320 return -1;
321 }
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400322
323 memset(dst + ACTIVE_VIDEO_MEM_OFFSET, bfin_logo.data[0],
324 fbmem_size - ACTIVE_VIDEO_MEM_OFFSET);
325
326 dma_bitblit(dst + ACTIVE_VIDEO_MEM_OFFSET, &bfin_logo,
327 (LCD_X_RES - bfin_logo.width) / 2,
328 (LCD_Y_RES - bfin_logo.height) / 2);
329
330 video_init(dst); /* Video initialization */
331
332 memset(&videodev, 0, sizeof(videodev));
333
334 strcpy(videodev.name, "video");
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400335
Mike Frysingercb95c7a2009-09-02 05:52:37 -0400336 error = stdio_register(&videodev);
Mike Frysinger8b219cf2008-10-12 21:54:07 -0400337
338 return (error == 0) ? devices : error;
339}