1 files changed, 286 insertions, 0 deletions

diff --git a/firmware/target/arm/s5l8702/ipod6g/lcd-ipod6g.c b/firmware/target/arm/s5l8702/ipod6g/lcd-ipod6g.c
new file mode 100644
index 0000000000..1de6a8e62f
--- /dev/null
+++ b/firmware/target/arm/s5l8702/ipod6g/lcd-ipod6g.c
@@ -0,0 +1,286 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: lcd-nano2g.c 28868 2010-12-21 06:59:17Z Buschel $
+ *
+ * Copyright (C) 2009 by Dave Chapman
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+
+#include "hwcompat.h"
+#include "kernel.h"
+#include "lcd.h"
+#include "system.h"
+#include "cpu.h"
+#include "pmu-target.h"
+#include "power.h"
+
+
+#define R_HORIZ_GRAM_ADDR_SET     0x200
+#define R_VERT_GRAM_ADDR_SET      0x201
+#define R_WRITE_DATA_TO_GRAM      0x202
+#define R_HORIZ_ADDR_START_POS    0x210
+#define R_HORIZ_ADDR_END_POS      0x211
+#define R_VERT_ADDR_START_POS     0x212
+#define R_VERT_ADDR_END_POS       0x213
+
+
+/* LCD type 1 register defines */
+
+#define R_COLUMN_ADDR_SET         0x2a
+#define R_ROW_ADDR_SET            0x2b
+#define R_MEMORY_WRITE            0x2c
+
+
+/** globals **/
+
+int lcd_type; /* also needed in debug-s5l8702.c */
+
+
+static inline void s5l_lcd_write_cmd_data(int cmd, int data)
+{
+    while (LCD_STATUS & 0x10);
+    LCD_WCMD = cmd;
+
+    while (LCD_STATUS & 0x10);
+    LCD_WDATA = data;
+}
+
+static inline void s5l_lcd_write_cmd(unsigned short cmd)
+{
+    while (LCD_STATUS & 0x10);
+    LCD_WCMD = cmd;
+}
+
+static inline void s5l_lcd_write_data(unsigned short data)
+{
+    while (LCD_STATUS & 0x10);
+    LCD_WDATA = data;
+}
+
+/*** hardware configuration ***/
+
+int lcd_default_contrast(void)
+{
+    return 0x1f;
+}
+
+void lcd_set_contrast(int val)
+{
+    (void)val;
+}
+
+void lcd_set_invert_display(bool yesno)
+{
+    (void)yesno;
+}
+
+void lcd_set_flip(bool yesno)
+{
+    (void)yesno;
+}
+
+bool lcd_active(void)
+{
+    return true;
+}
+
+void lcd_shutdown(void)
+{
+    pmu_write(0x2b, 0);  /* Kill the backlight, instantly. */
+    pmu_write(0x29, 0);
+
+    if (lcd_type == 3)

+    {

+        s5l_lcd_write_cmd_data(0x7, 0x172);

+        s5l_lcd_write_cmd_data(0x30, 0x3ff);

+        sleep(HZ / 10);

+        s5l_lcd_write_cmd_data(0x7, 0x120);

+        s5l_lcd_write_cmd_data(0x30, 0x0);

+        s5l_lcd_write_cmd_data(0x100, 0x780);

+        s5l_lcd_write_cmd_data(0x7, 0x0);

+        s5l_lcd_write_cmd_data(0x101, 0x260);

+        s5l_lcd_write_cmd_data(0x102, 0xa9);

+        sleep(HZ / 30);

+        s5l_lcd_write_cmd_data(0x100, 0x700);

+        s5l_lcd_write_cmd_data(0x100, 0x704);

+    }

+    else if (lcd_type == 1)

+    {

+        s5l_lcd_write_cmd(0x28);

+        s5l_lcd_write_cmd(0x10);

+        sleep(HZ / 10);

+    }

+    else

+    {

+        s5l_lcd_write_cmd(0x28);

+        sleep(HZ / 20);

+        s5l_lcd_write_cmd(0x10);

+        sleep(HZ / 20);

+    }

+}
+
+void lcd_sleep(void)
+{
+    lcd_shutdown();
+}
+
+/* LCD init */
+void lcd_init_device(void)
+{
+    /* Detect lcd type */
+    lcd_type = (PDAT6 & 0x30) >> 4;
+}
+
+/*** Update functions ***/
+
+static inline void lcd_write_pixel(fb_data pixel)
+{
+    LCD_WDATA = pixel;
+}
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_update(void) ICODE_ATTR;
+void lcd_update(void)
+{
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
+
+/* Line write helper function. */
+extern void lcd_write_line(const fb_data *addr, 
+                           int pixelcount,
+                           const unsigned int lcd_base_addr);
+
+/* Update a fraction of the display. */
+void lcd_update_rect(int, int, int, int) ICODE_ATTR;
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    int y0, x0, y1, x1;
+    fb_data* p;
+    
+    /* Both x and width need to be preprocessed due to asm optimizations */
+    x     = x & ~1;                 /* ensure x is even */
+    width = (width + 3) & ~3;       /* ensure width is a multiple of 4 */
+
+    x0 = x;                         /* start horiz */
+    y0 = y;                         /* start vert */
+    x1 = (x + width) - 1;           /* max horiz */
+    y1 = (y + height) - 1;          /* max vert */
+
+    if (lcd_type & 2) {
+        s5l_lcd_write_cmd_data(R_HORIZ_ADDR_START_POS, x0);
+        s5l_lcd_write_cmd_data(R_HORIZ_ADDR_END_POS,   x1);
+        s5l_lcd_write_cmd_data(R_VERT_ADDR_START_POS,  y0);
+        s5l_lcd_write_cmd_data(R_VERT_ADDR_END_POS,    y1);
+
+        s5l_lcd_write_cmd_data(R_HORIZ_GRAM_ADDR_SET,  (x1 << 8) | x0);
+        s5l_lcd_write_cmd_data(R_VERT_GRAM_ADDR_SET,   (y1 << 8) | y0);
+
+        s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM);
+    } else {
+        s5l_lcd_write_cmd(R_COLUMN_ADDR_SET);
+        s5l_lcd_write_data(x0 >> 8);
+        s5l_lcd_write_data(x0 & 0xff);
+        s5l_lcd_write_data(x1 >> 8);
+        s5l_lcd_write_data(x1 & 0xff);
+
+        s5l_lcd_write_cmd(R_ROW_ADDR_SET);
+        s5l_lcd_write_data(y0 >> 8);
+        s5l_lcd_write_data(y0 & 0xff);
+        s5l_lcd_write_data(y1 >> 8);
+        s5l_lcd_write_data(y1 & 0xff);
+
+        s5l_lcd_write_cmd(R_MEMORY_WRITE);
+    }
+    for (y = y0; y <= y1; y++)
+        for (x = x0; x <= x1; x++)
+            s5l_lcd_write_data(lcd_framebuffer[y][x]);
+    return;
+
+    /* Copy display bitmap to hardware */
+    p = &lcd_framebuffer[y0][x0];
+    if (LCD_WIDTH == width) {
+        /* Write all lines at once */
+        lcd_write_line(p, height*LCD_WIDTH, LCD_BASE);
+    } else {
+        y1 = height;
+        do {
+            /* Write a single line */
+            lcd_write_line(p, width, LCD_BASE);
+            p += LCD_WIDTH;
+        } while (--y1 > 0 );
+    }
+}
+
+/* Line write helper function for lcd_yuv_blit. Writes two lines of yuv420. */
+extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
+                                   const unsigned int lcd_baseadress,
+                                   int width,
+                                   int stride);
+
+/* Blit a YUV bitmap directly to the LCD */
+void lcd_blit_yuv(unsigned char * const src[3],
+                  int src_x, int src_y, int stride,
+                  int x, int y, int width, int height)
+{
+    unsigned int z, y0, x0, y1, x1;;
+    unsigned char const * yuv_src[3];
+    
+    width = (width + 1) & ~1;       /* ensure width is even */
+
+    x0 = x;                         /* start horiz */
+    y0 = y;                         /* start vert */
+    x1 = (x + width) - 1;           /* max horiz */
+    y1 = (y + height) - 1;          /* max vert */
+
+    if (lcd_type & 2) {
+        s5l_lcd_write_cmd_data(R_HORIZ_ADDR_START_POS, x0);
+        s5l_lcd_write_cmd_data(R_HORIZ_ADDR_END_POS,   x1);
+        s5l_lcd_write_cmd_data(R_VERT_ADDR_START_POS,  y0);
+        s5l_lcd_write_cmd_data(R_VERT_ADDR_END_POS,    y1);
+
+        s5l_lcd_write_cmd_data(R_HORIZ_GRAM_ADDR_SET,  (x1 << 8) | x0);
+        s5l_lcd_write_cmd_data(R_VERT_GRAM_ADDR_SET,   (y1 << 8) | y0);
+
+        s5l_lcd_write_cmd(0);
+        s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM);
+    } else {
+        s5l_lcd_write_cmd(R_COLUMN_ADDR_SET);
+        s5l_lcd_write_data(x0);            /* Start column */
+        s5l_lcd_write_data(x1);            /* End column */
+
+        s5l_lcd_write_cmd(R_ROW_ADDR_SET);
+        s5l_lcd_write_data(y0);            /* Start row */
+        s5l_lcd_write_data(y1);            /* End row */
+
+        s5l_lcd_write_cmd(R_MEMORY_WRITE);
+    }
+
+    z = stride * src_y;
+    yuv_src[0] = src[0] + z + src_x;
+    yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
+    yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
+
+    height >>= 1;
+
+    do {
+        lcd_write_yuv420_lines(yuv_src, LCD_BASE, width, stride);
+        yuv_src[0] += stride << 1;
+        yuv_src[1] += stride >> 1; /* Skip down one chroma line */
+        yuv_src[2] += stride >> 1;
+    } while (--height > 0);
+}