]> git.kernelconcepts.de Git - karo-tx-uboot.git/blob - board/bf548-ezkit/video.c
Merge branch 'master' of git://git.denx.de/u-boot-microblaze
[karo-tx-uboot.git] / board / bf548-ezkit / video.c
1 /*
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>
14 #include <asm/gpio.h>
15 #include <asm/portmux.h>
16 #include <asm/mach-common/bits/dma.h>
17 #include <i2c.h>
18 #include <linux/types.h>
19 #include <stdio_dev.h>
20
21 #include <lzma/LzmaTypes.h>
22 #include <lzma/LzmaDec.h>
23 #include <lzma/LzmaTools.h>
24
25 #define DMA_SIZE16      2
26
27 #include <asm/mach-common/bits/eppi.h>
28
29 #include EASYLOGO_HEADER
30
31 #define LCD_X_RES               480     /*Horizontal Resolution */
32 #define LCD_Y_RES               272     /* Vertical Resolution */
33
34 #define LCD_BPP                 24      /* Bit Per Pixel */
35 #define LCD_PIXEL_SIZE          (LCD_BPP / 8)
36 #define DMA_BUS_SIZE            32
37 #define ACTIVE_VIDEO_MEM_OFFSET 0
38
39 /*      -- Horizontal synchronizing --
40  *
41  * Timing characteristics taken from the SHARP LQ043T1DG01 datasheet
42  * (LCY-W-06602A Page 9 of 22)
43  *
44  * Clock Frequency      1/Tc Min 7.83 Typ 9.00 Max 9.26 MHz
45  *
46  * Period               TH - 525 - Clock
47  * Pulse width          THp - 41 - Clock
48  * Horizontal period    THd - 480 - Clock
49  * Back porch           THb - 2 - Clock
50  * Front porch          THf - 2 - Clock
51  *
52  * -- Vertical synchronizing --
53  * Period               TV - 286 - Line
54  * Pulse width          TVp - 10 - Line
55  * Vertical period      TVd - 272 - Line
56  * Back porch           TVb - 2 - Line
57  * Front porch          TVf - 2 - Line
58  */
59
60 #define LCD_CLK                 (8*1000*1000)   /* 8MHz */
61
62 /* # active data to transfer after Horizontal Delay clock */
63 #define EPPI_HCOUNT             LCD_X_RES
64
65 /* # active lines to transfer after Vertical Delay clock */
66 #define EPPI_VCOUNT             LCD_Y_RES
67
68 /* Samples per Line = 480 (active data) + 45 (padding) */
69 #define EPPI_LINE               525
70
71 /* Lines per Frame = 272 (active data) + 14 (padding) */
72 #define EPPI_FRAME              286
73
74 /* FS1 (Hsync) Width (Typical)*/
75 #define EPPI_FS1W_HBL           41
76
77 /* FS1 (Hsync) Period (Typical) */
78 #define EPPI_FS1P_AVPL          EPPI_LINE
79
80 /* Horizontal Delay clock after assertion of Hsync (Typical) */
81 #define EPPI_HDELAY             43
82
83 /* FS2 (Vsync) Width    = FS1 (Hsync) Period * 10 */
84 #define EPPI_FS2W_LVB           (EPPI_LINE * 10)
85
86  /* FS2 (Vsync) Period   = FS1 (Hsync) Period * Lines per Frame */
87 #define EPPI_FS2P_LAVF          (EPPI_LINE * EPPI_FRAME)
88
89 /* Vertical Delay after assertion of Vsync (2 Lines) */
90 #define EPPI_VDELAY             12
91
92 #define EPPI_CLIP               0xFF00FF00
93
94 /* EPPI Control register configuration value for RGB out
95  * - EPPI as Output
96  * GP 2 frame sync mode,
97  * Internal Clock generation disabled, Internal FS generation enabled,
98  * Receives samples on EPPI_CLK raising edge, Transmits samples on EPPI_CLK falling edge,
99  * FS1 & FS2 are active high,
100  * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
101  * DMA Unpacking disabled when RGB Formating is enabled, otherwise DMA unpacking enabled
102  * Swapping Enabled,
103  * One (DMA) Channel Mode,
104  * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
105  * Regular watermark - when FIFO is 100% full,
106  * Urgent watermark - when FIFO is 75% full
107  */
108
109 #define EPPI_CONTROL            (0x20136E2E)
110
111 static inline u16 get_eppi_clkdiv(u32 target_ppi_clk)
112 {
113         u32 sclk = get_sclk();
114
115         /* EPPI_CLK = (SCLK) / (2 * (EPPI_CLKDIV[15:0] + 1)) */
116
117         return (((sclk / target_ppi_clk) / 2) - 1);
118 }
119
120 void Init_PPI(void)
121 {
122         u16 eppi_clkdiv = get_eppi_clkdiv(LCD_CLK);
123
124         bfin_write_EPPI0_FS1W_HBL(EPPI_FS1W_HBL);
125         bfin_write_EPPI0_FS1P_AVPL(EPPI_FS1P_AVPL);
126         bfin_write_EPPI0_FS2W_LVB(EPPI_FS2W_LVB);
127         bfin_write_EPPI0_FS2P_LAVF(EPPI_FS2P_LAVF);
128         bfin_write_EPPI0_CLIP(EPPI_CLIP);
129
130         bfin_write_EPPI0_FRAME(EPPI_FRAME);
131         bfin_write_EPPI0_LINE(EPPI_LINE);
132
133         bfin_write_EPPI0_HCOUNT(EPPI_HCOUNT);
134         bfin_write_EPPI0_HDELAY(EPPI_HDELAY);
135         bfin_write_EPPI0_VCOUNT(EPPI_VCOUNT);
136         bfin_write_EPPI0_VDELAY(EPPI_VDELAY);
137
138         bfin_write_EPPI0_CLKDIV(eppi_clkdiv);
139
140 /*
141  * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
142  * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
143  */
144 #if defined(CONFIG_VIDEO_RGB666)
145                 bfin_write_EPPI0_CONTROL((EPPI_CONTROL & ~DLENGTH) | DLEN_18 |
146                                          RGB_FMT_EN);
147 #else
148                 bfin_write_EPPI0_CONTROL(((EPPI_CONTROL & ~DLENGTH) | DLEN_24) &
149                                          ~RGB_FMT_EN);
150 #endif
151
152 }
153
154 #define               DEB2_URGENT  0x2000     /* DEB2 Urgent */
155
156 void Init_DMA(void *dst)
157 {
158
159 #if defined(CONFIG_DEB_DMA_URGENT)
160         bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE() | DEB2_URGENT);
161 #endif
162
163         bfin_write_DMA12_START_ADDR(dst);
164
165         /* X count */
166         bfin_write_DMA12_X_COUNT((LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
167         bfin_write_DMA12_X_MODIFY(DMA_BUS_SIZE / 8);
168
169         /* Y count */
170         bfin_write_DMA12_Y_COUNT(LCD_Y_RES);
171         bfin_write_DMA12_Y_MODIFY(DMA_BUS_SIZE / 8);
172
173         /* DMA Config */
174         bfin_write_DMA12_CONFIG(
175                 WDSIZE_32       |       /* 32 bit DMA */
176                 DMA2D           |       /* 2D DMA */
177                 FLOW_AUTO               /* autobuffer mode */
178         );
179 }
180
181 void Init_Ports(void)
182 {
183         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,
188 #if !defined(CONFIG_VIDEO_RGB666)
189                 P_PPI0_D18, P_PPI0_D19, P_PPI0_D20, P_PPI0_D21, P_PPI0_D22,
190                 P_PPI0_D23,
191 #endif
192                 P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, 0,
193         };
194         peripheral_request_list(pins, "lcd");
195
196         gpio_request(GPIO_PE3, "lcd-disp");
197         gpio_direction_output(GPIO_PE3, 1);
198 }
199
200 void EnableDMA(void)
201 {
202         bfin_write_DMA12_CONFIG(bfin_read_DMA12_CONFIG() | DMAEN);
203 }
204
205 void DisableDMA(void)
206 {
207         bfin_write_DMA12_CONFIG(bfin_read_DMA12_CONFIG() & ~DMAEN);
208 }
209
210 /* enable and disable PPI functions */
211 void EnablePPI(void)
212 {
213         bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
214 }
215
216 void DisablePPI(void)
217 {
218         bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
219 }
220
221 int 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
232 void video_stop(void)
233 {
234         DisablePPI();
235         DisableDMA();
236 }
237
238 static void dma_bitblit(void *dst, fastimage_t *logo, int x, int y)
239 {
240         if (dcache_status())
241                 blackfin_dcache_flush_range(logo->data, logo->data + logo->size);
242
243         bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
244
245         /* Setup destination start address */
246         bfin_write_MDMA_D0_START_ADDR(dst + ((x & -2) * LCD_PIXEL_SIZE)
247                                         + (y * LCD_X_RES * LCD_PIXEL_SIZE));
248         /* Setup destination xcount */
249         bfin_write_MDMA_D0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
250         /* Setup destination xmodify */
251         bfin_write_MDMA_D0_X_MODIFY(DMA_SIZE16);
252
253         /* Setup destination ycount */
254         bfin_write_MDMA_D0_Y_COUNT(logo->height);
255         /* Setup destination ymodify */
256         bfin_write_MDMA_D0_Y_MODIFY((LCD_X_RES - logo->width) * LCD_PIXEL_SIZE + DMA_SIZE16);
257
258
259         /* Setup Source start address */
260         bfin_write_MDMA_S0_START_ADDR(logo->data);
261         /* Setup Source xcount */
262         bfin_write_MDMA_S0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
263         /* Setup Source xmodify */
264         bfin_write_MDMA_S0_X_MODIFY(DMA_SIZE16);
265
266         /* Setup Source ycount */
267         bfin_write_MDMA_S0_Y_COUNT(logo->height);
268         /* Setup Source ymodify */
269         bfin_write_MDMA_S0_Y_MODIFY(DMA_SIZE16);
270
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 | DMA_ERR);
280         bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE | DMA_ERR);
281
282 }
283
284 void video_putc(const char c)
285 {
286 }
287
288 void video_puts(const char *s)
289 {
290 }
291
292 int drv_video_init(void)
293 {
294         int error, devices = 1;
295         struct stdio_dev videodev;
296
297         u8 *dst;
298         u32 fbmem_size = LCD_X_RES * LCD_Y_RES * LCD_PIXEL_SIZE + ACTIVE_VIDEO_MEM_OFFSET;
299
300         dst = malloc(fbmem_size);
301
302         if (dst == NULL) {
303                 printf("Failed to alloc FB memory\n");
304                 return -1;
305         }
306
307 #ifdef EASYLOGO_ENABLE_GZIP
308         unsigned char *data = EASYLOGO_DECOMP_BUFFER;
309         unsigned long src_len = EASYLOGO_ENABLE_GZIP;
310         error = gunzip(data, bfin_logo.size, bfin_logo.data, &src_len);
311         bfin_logo.data = data;
312 #elif defined(EASYLOGO_ENABLE_LZMA)
313         unsigned char *data = EASYLOGO_DECOMP_BUFFER;
314         SizeT lzma_len = bfin_logo.size;
315         error = lzmaBuffToBuffDecompress(data, &lzma_len,
316                 bfin_logo.data, EASYLOGO_ENABLE_LZMA);
317         bfin_logo.data = data;
318 #else
319         error = 0;
320 #endif
321
322         if (error) {
323                 puts("Failed to decompress logo\n");
324                 free(dst);
325                 return -1;
326         }
327
328         memset(dst + ACTIVE_VIDEO_MEM_OFFSET, bfin_logo.data[0], fbmem_size - ACTIVE_VIDEO_MEM_OFFSET);
329
330         dma_bitblit(dst + ACTIVE_VIDEO_MEM_OFFSET, &bfin_logo,
331                         (LCD_X_RES - bfin_logo.width) / 2,
332                         (LCD_Y_RES - bfin_logo.height) / 2);
333
334         video_init(dst);                /* Video initialization */
335
336         memset(&videodev, 0, sizeof(videodev));
337
338         strcpy(videodev.name, "video");
339         videodev.ext = DEV_EXT_VIDEO;   /* Video extensions */
340         videodev.flags = DEV_FLAGS_SYSTEM;      /* No Output */
341         videodev.putc = video_putc;     /* 'putc' function */
342         videodev.puts = video_puts;     /* 'puts' function */
343
344         error = stdio_register(&videodev);
345
346         return (error == 0) ? devices : error;
347 }