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-rw-r--r--board/bf527-ezkit/video.c317
1 files changed, 317 insertions, 0 deletions
diff --git a/board/bf527-ezkit/video.c b/board/bf527-ezkit/video.c
new file mode 100644
index 0000000..2df6717
--- /dev/null
+++ b/board/bf527-ezkit/video.c
@@ -0,0 +1,317 @@
+/*
+ * video.c - run splash screen on lcd
+ *
+ * Copyright (c) 2007-2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <stdarg.h>
+#include <common.h>
+#include <config.h>
+#include <malloc.h>
+#include <asm/blackfin.h>
+#include <asm/mach-common/bits/dma.h>
+#include <i2c.h>
+#include <linux/types.h>
+#include <devices.h>
+
+int gunzip(void *, int, unsigned char *, unsigned long *);
+
+#define DMA_SIZE16 2
+
+#include <asm/mach-common/bits/ppi.h>
+#include <asm/mach-common/bits/timer.h>
+
+#include <asm/bfin_logo_230x230.h>
+
+#define LCD_X_RES 320 /* Horizontal Resolution */
+#define LCD_Y_RES 240 /* Vertical Resolution */
+#define LCD_BPP 24 /* Bit Per Pixel */
+#define LCD_PIXEL_SIZE (LCD_BPP / 8)
+
+#define DMA_BUS_SIZE 16
+#define LCD_CLK (12*1000*1000) /* 12MHz */
+
+#define CLOCKS_PER_PIX 3
+
+/* HS and VS timing parameters (all in number of PPI clk ticks) */
+#define H_ACTPIX (LCD_X_RES * CLOCKS_PER_PIX) /* active horizontal pixel */
+#define H_PERIOD (408 * CLOCKS_PER_PIX) /* HS period */
+#define H_PULSE 90 /* HS pulse width */
+#define H_START 204 /* first valid pixel */
+
+#define U_LINE 1 /* Blanking Lines */
+
+#define V_LINES (LCD_Y_RES + U_LINE) /* total vertical lines */
+#define V_PULSE (3 * H_PERIOD) /* VS pulse width (1-5 H_PERIODs) */
+#define V_PERIOD (H_PERIOD * V_LINES) /* VS period */
+
+#define ACTIVE_VIDEO_MEM_OFFSET (U_LINE * H_ACTPIX)
+
+#define PPI_TX_MODE 0x2
+#define PPI_XFER_TYPE_11 0xC
+#define PPI_PORT_CFG_01 0x10
+#define PPI_PACK_EN 0x80
+#define PPI_POLS_1 0x8000
+
+/* enable and disable PPI functions */
+void EnablePPI(void)
+{
+ *pPPI_CONTROL |= PORT_EN;
+}
+
+void DisablePPI(void)
+{
+ *pPPI_CONTROL &= ~PORT_EN;
+}
+
+void Init_Ports(void)
+{
+ *pPORTF_MUX &= ~PORT_x_MUX_0_MASK;
+ *pPORTF_MUX |= PORT_x_MUX_0_FUNC_1;
+ *pPORTF_FER |= PF0 | PF1 | PF2 | PF3 | PF4 | PF5 | PF6 | PF7;
+
+ *pPORTG_MUX &= ~PORT_x_MUX_1_MASK;
+ *pPORTG_MUX |= PORT_x_MUX_1_FUNC_1;
+ *pPORTG_FER |= PG5;
+}
+
+void Init_PPI(void)
+{
+
+ *pPPI_DELAY = H_START;
+ *pPPI_COUNT = (H_ACTPIX-1);
+ *pPPI_FRAME = 0;
+
+ /* PPI control, to be replaced with definitions */
+ *pPPI_CONTROL = PPI_TX_MODE | /* output mode , PORT_DIR */
+ PPI_XFER_TYPE_11 | /* sync mode XFR_TYPE */
+ PPI_PORT_CFG_01 | /* two frame sync PORT_CFG */
+ PPI_PACK_EN | /* packing enabled PACK_EN */
+ PPI_POLS_1; /* faling edge syncs POLS */
+}
+
+void Init_DMA(void *dst)
+{
+ *pDMA0_START_ADDR = dst;
+
+ /* X count */
+ *pDMA0_X_COUNT = H_ACTPIX / 2;
+ *pDMA0_X_MODIFY = DMA_BUS_SIZE / 8;
+
+ /* Y count */
+ *pDMA0_Y_COUNT = V_LINES;
+ *pDMA0_Y_MODIFY = DMA_BUS_SIZE / 8;
+
+ /* DMA Config */
+ *pDMA0_CONFIG =
+ WDSIZE_16 | /* 16 bit DMA */
+ DMA2D | /* 2D DMA */
+ FLOW_AUTO; /* autobuffer mode */
+}
+
+
+void EnableDMA(void)
+{
+ *pDMA0_CONFIG |= DMAEN;
+}
+
+void DisableDMA(void)
+{
+ *pDMA0_CONFIG &= ~DMAEN;
+}
+
+
+/* Init TIMER0 as Frame Sync 1 generator */
+void InitTIMER0(void)
+{
+ *pTIMER_DISABLE |= TIMDIS0; /* disable Timer */
+ SSYNC();
+ *pTIMER_STATUS |= TIMIL0 | TOVF_ERR0 | TRUN0; /* clear status */
+ SSYNC();
+
+ *pTIMER0_PERIOD = H_PERIOD;
+ SSYNC();
+ *pTIMER0_WIDTH = H_PULSE;
+ SSYNC();
+
+ *pTIMER0_CONFIG = PWM_OUT |
+ PERIOD_CNT |
+ TIN_SEL |
+ CLK_SEL |
+ EMU_RUN;
+ SSYNC();
+}
+
+void EnableTIMER0(void)
+{
+ *pTIMER_ENABLE |= TIMEN0;
+ SSYNC();
+}
+
+void DisableTIMER0(void)
+{
+ *pTIMER_DISABLE |= TIMDIS0;
+ SSYNC();
+}
+
+
+void InitTIMER1(void)
+{
+ *pTIMER_DISABLE |= TIMDIS1; /* disable Timer */
+ SSYNC();
+ *pTIMER_STATUS |= TIMIL1 | TOVF_ERR1 | TRUN1; /* clear status */
+ SSYNC();
+
+
+ *pTIMER1_PERIOD = V_PERIOD;
+ SSYNC();
+ *pTIMER1_WIDTH = V_PULSE;
+ SSYNC();
+
+ *pTIMER1_CONFIG = PWM_OUT |
+ PERIOD_CNT |
+ TIN_SEL |
+ CLK_SEL |
+ EMU_RUN;
+ SSYNC();
+}
+
+void EnableTIMER1(void)
+{
+ *pTIMER_ENABLE |= TIMEN1;
+ SSYNC();
+}
+
+void DisableTIMER1(void)
+{
+ *pTIMER_DISABLE |= TIMDIS1;
+ SSYNC();
+}
+
+int video_init(void *dst)
+{
+
+ Init_Ports();
+ Init_DMA(dst);
+ EnableDMA();
+ InitTIMER0();
+ InitTIMER1();
+ Init_PPI();
+ EnablePPI();
+
+ /* Frame sync 2 (VS) needs to start at least one PPI clk earlier */
+ EnableTIMER1();
+ /* Add Some Delay ... */
+ SSYNC();
+ SSYNC();
+ SSYNC();
+ SSYNC();
+
+ /* now start frame sync 1 */
+ EnableTIMER0();
+
+ return 0;
+}
+
+static void dma_bitblit(void *dst, fastimage_t *logo, int x, int y)
+{
+ if (dcache_status())
+ blackfin_dcache_flush_range(logo->data, logo->data + logo->size);
+
+ bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
+
+ /* Setup destination start address */
+ bfin_write_MDMA_D0_START_ADDR(dst + ((x & -2) * LCD_PIXEL_SIZE)
+ + (y * LCD_X_RES * LCD_PIXEL_SIZE));
+ /* Setup destination xcount */
+ bfin_write_MDMA_D0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
+ /* Setup destination xmodify */
+ bfin_write_MDMA_D0_X_MODIFY(DMA_SIZE16);
+
+ /* Setup destination ycount */
+ bfin_write_MDMA_D0_Y_COUNT(logo->height);
+ /* Setup destination ymodify */
+ bfin_write_MDMA_D0_Y_MODIFY((LCD_X_RES - logo->width) * LCD_PIXEL_SIZE + DMA_SIZE16);
+
+
+ /* Setup Source start address */
+ bfin_write_MDMA_S0_START_ADDR(logo->data);
+ /* Setup Source xcount */
+ bfin_write_MDMA_S0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16);
+ /* Setup Source xmodify */
+ bfin_write_MDMA_S0_X_MODIFY(DMA_SIZE16);
+
+ /* Setup Source ycount */
+ bfin_write_MDMA_S0_Y_COUNT(logo->height);
+ /* Setup Source ymodify */
+ bfin_write_MDMA_S0_Y_MODIFY(DMA_SIZE16);
+
+
+ /* Enable source DMA */
+ bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16 | DMA2D);
+ SSYNC();
+ bfin_write_MDMA_D0_CONFIG(WNR | DMAEN | WDSIZE_16 | DMA2D);
+
+ while (bfin_read_MDMA_D0_IRQ_STATUS() & DMA_RUN);
+
+ bfin_write_MDMA_S0_IRQ_STATUS(bfin_read_MDMA_S0_IRQ_STATUS() | DMA_DONE | DMA_ERR);
+ bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE | DMA_ERR);
+
+}
+
+void video_putc(const char c)
+{
+}
+
+void video_puts(const char *s)
+{
+}
+
+int drv_video_init(void)
+{
+ int error, devices = 1;
+ device_t videodev;
+
+ u8 *dst;
+ u32 fbmem_size = LCD_X_RES * LCD_Y_RES * LCD_PIXEL_SIZE + ACTIVE_VIDEO_MEM_OFFSET;
+
+ dst = malloc(fbmem_size);
+
+ if (dst == NULL) {
+ printf("Failed to alloc FB memory\n");
+ return -1;
+ }
+
+#ifdef EASYLOGO_ENABLE_GZIP
+ unsigned char *data = EASYLOGO_DECOMP_BUFFER;
+ unsigned long src_len = EASYLOGO_ENABLE_GZIP;
+ if (gunzip(data, bfin_logo.size, bfin_logo.data, &src_len)) {
+ puts("Failed to decompress logo\n");
+ free(dst);
+ return -1;
+ }
+ bfin_logo.data = data;
+#endif
+
+ memset(dst + ACTIVE_VIDEO_MEM_OFFSET, bfin_logo.data[0], fbmem_size - ACTIVE_VIDEO_MEM_OFFSET);
+
+ dma_bitblit(dst + ACTIVE_VIDEO_MEM_OFFSET, &bfin_logo,
+ (LCD_X_RES - bfin_logo.width) / 2,
+ (LCD_Y_RES - bfin_logo.height) / 2);
+
+ video_init(dst); /* Video initialization */
+
+ memset(&videodev, 0, sizeof(videodev));
+
+ strcpy(videodev.name, "video");
+ videodev.ext = DEV_EXT_VIDEO; /* Video extensions */
+ videodev.flags = DEV_FLAGS_SYSTEM; /* No Output */
+ videodev.putc = video_putc; /* 'putc' function */
+ videodev.puts = video_puts; /* 'puts' function */
+
+ error = device_register(&videodev);
+
+ return (error == 0) ? devices : error;
+}