1 files changed, 349 insertions, 0 deletions

diff --git a/firmware/target/arm/tcc77x/c100/lcd-S6B33B2.c b/firmware/target/arm/tcc77x/c100/lcd-S6B33B2.c
new file mode 100644
index 0000000000..79e14aba70
--- /dev/null
+++ b/firmware/target/arm/tcc77x/c100/lcd-S6B33B2.c
@@ -0,0 +1,349 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: lcd-S6B33B2.c 16981 2008-06-09 04:34:57Z jethead71 $
+ *
+ * Copyright (C) 2007 by Mark Arigo
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "cpu.h"
+#include "lcd.h"
+#include "kernel.h"
+#include "system.h"
+
+/* Display status */
+static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
+
+/* LCD command set for Samsung S6B33B2 */
+
+#define R_NOP                  0x00
+#define R_OSCILLATION_MODE     0x02
+#define R_DRIVER_OUTPUT_MODE   0x10
+#define R_DCDC_SET             0x20
+#define R_BIAS_SET             0x22
+#define R_DCDC_CLOCK_DIV       0x24
+#define R_DCDC_AMP_ONOFF       0x26
+#define R_TEMP_COMPENSATION    0x28
+#define R_CONTRAST_CONTROL1    0x2a
+#define R_CONTRAST_CONTROL2    0x2b
+#define R_STANDBY_OFF          0x2c
+#define R_STANDBY_ON           0x2d
+#define R_DDRAM_BURST_OFF      0x2e
+#define R_DDRAM_BURST_ON       0x2f
+#define R_ADDRESSING_MODE      0x30
+#define R_ROW_VECTOR_MODE      0x32
+#define R_N_LINE_INVERSION     0x34
+#define R_FRAME_FREQ_CONTROL   0x36
+#define R_RED_PALETTE          0x38
+#define R_GREEN_PALETTE        0x3a
+#define R_BLUE_PALETTE         0x3c
+#define R_ENTRY_MODE           0x40
+#define R_X_ADDR_AREA          0x42
+#define R_Y_ADDR_AREA          0x43
+#define R_RAM_SKIP_AREA        0x45
+#define R_DISPLAY_OFF          0x50
+#define R_DISPLAY_ON           0x51
+#define R_SPEC_DISPLAY_PATTERN 0x53
+#define R_PARTIAL_DISPLAY_MODE 0x55
+#define R_PARTIAL_START_LINE   0x56
+#define R_PARTIAL_END_LINE     0x57
+#define R_AREA_SCROLL_MODE     0x59
+#define R_SCROLL_START_LINE    0x5a
+#define R_DATA_FORMAT_SELECT   0x60
+
+/* TCC77x specific defines */
+#define LCD_BASE  0x50000000
+#define LCD_CMD   *(volatile unsigned char*)(LCD_BASE)
+#define LCD_DATA  *(volatile unsigned char*)(LCD_BASE+1)
+
+static void lcd_send_command(unsigned cmd)
+{
+    LCD_CMD = cmd;
+        
+    asm volatile (
+        "nop      \n\t"
+        "nop      \n\t"
+        "nop      \n\t"
+    );
+}
+
+static void lcd_send_data(unsigned data)
+{
+    LCD_DATA = (data & 0xff00) >> 8;
+    LCD_DATA = (data & 0x00ff);
+}
+
+/* End of TCC77x specific defines */
+
+/* LCD init */
+void lcd_init_device(void)
+{
+    uint32_t bus_width;
+
+    /* Telechips init the same as the original firmware */
+    bus_width = ((MCFG >> 11) & 0x3) ^ 3;
+
+    CSCFG1 = (bus_width << 28) |
+             (3 << 26) |                 /* MTYPE = 3 */
+             ((LCD_BASE >> 28) << 22) |  /* CSBASE = 0x5 */
+             (1 << 20) |                 /* Unknown */
+             (2 << 11) |                 /* Setup time = 2 cycles */
+             (2 << 3) |                  /* Pulse width = 2+1 cycles */
+             (2 << 0);                   /* Hold time = 2 cycle */
+                         
+    GPIOE &= ~0x8;
+    sleep(HZ/100);   /* 10ms */
+
+    GPIOE |= 0x08;
+    sleep(HZ/100);   /* 10ms */
+        
+    lcd_send_command(R_STANDBY_OFF);
+    sleep(HZ/20);    /* 50ms */
+
+    lcd_send_command(R_OSCILLATION_MODE);
+    lcd_send_command(0x01);
+    sleep(HZ/100);   /* 10ms */
+
+    lcd_send_command(R_DCDC_AMP_ONOFF);
+    lcd_send_command(0x01);
+    sleep(HZ/100);   /* 10ms */
+
+    lcd_send_command(R_DCDC_AMP_ONOFF);
+    lcd_send_command(0x09);
+    sleep(HZ/100);   /* 10ms */
+
+    lcd_send_command(R_DCDC_AMP_ONOFF);
+    lcd_send_command(0x0b);
+    sleep(HZ/100);   /* 10ms */
+
+    lcd_send_command(R_DCDC_AMP_ONOFF);
+    lcd_send_command(0x0f);
+    sleep(HZ/100);   /* 10ms */
+
+    lcd_send_command(R_DCDC_SET);
+    lcd_send_command(0x01);
+    sleep(HZ/100);     /* 10ms */
+    sleep(HZ/10);      /* 100ms */
+
+    lcd_send_command(R_TEMP_COMPENSATION);
+    lcd_send_command(0x01);
+    sleep(HZ/100);     /* 10ms */
+
+    lcd_send_command(R_DRIVER_OUTPUT_MODE);
+    lcd_send_command(0x03);
+
+    lcd_send_command(R_ENTRY_MODE);
+    lcd_send_command(0x81);
+
+    lcd_send_command(R_N_LINE_INVERSION);
+    lcd_send_command(0x04);
+    lcd_send_command(0xfa);
+    lcd_send_command(0x5f);
+
+    lcd_set_contrast(0x28);
+
+    lcd_send_command(R_SPEC_DISPLAY_PATTERN);
+    lcd_send_command(0x0);
+    sleep(HZ/100);     /* 10ms */
+
+    lcd_send_command(R_ADDRESSING_MODE);
+    lcd_send_command(0x0);
+    sleep(HZ/100);     /* 10ms */
+
+    lcd_send_command(R_PARTIAL_DISPLAY_MODE);
+    lcd_send_command(0x0);
+    sleep(HZ/100);     /* 10ms */
+
+    lcd_send_command(R_X_ADDR_AREA);
+    lcd_send_command(0);
+    lcd_send_command(0x80);
+
+    lcd_send_command(R_Y_ADDR_AREA);
+    lcd_send_command(0x0);
+    lcd_send_command(0x80);
+
+    lcd_send_command(R_DISPLAY_ON);
+
+    lcd_send_command(R_SPEC_DISPLAY_PATTERN);
+    lcd_send_command(0x0);
+
+    /* Rockbox init */
+    lcd_clear_display();
+    lcd_update();
+}
+
+/*** hardware configuration ***/
+int lcd_default_contrast(void)
+{
+    return 0x28;
+}
+
+void lcd_set_contrast(int val)
+{
+        //val &= 0xFF;
+    lcd_send_command(R_CONTRAST_CONTROL1);
+    lcd_send_command(val);
+}
+
+void lcd_set_invert_display(bool yesno)
+{
+    /* TODO: Implement lcd_set_invert_display() */
+    (void)yesno;
+}
+
+/* turn the display upside down (call lcd_update() afterwards) */
+void lcd_set_flip(bool yesno)
+{
+    lcd_send_command(R_DRIVER_OUTPUT_MODE);
+    lcd_send_command(yesno ? 0x02 : 0x07);
+}
+
+/*** update functions ***/
+
+/*** update functions ***/
+
+void lcd_yuv_set_options(unsigned options)
+{
+    lcd_yuv_options = options;
+}
+
+/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
+extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
+                                   int width,
+                                   int stride);
+extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
+                                           int width,
+                                           int stride,
+                                           int x_screen, /* To align dither pattern */
+                                           int y_screen);
+/* Performance function to 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 char const * yuv_src[3];
+    off_t z;
+
+    /* Sorry, but width and height must be >= 2 or else */
+    width &= ~1;
+    height >>= 1;
+    
+    y += 0x1a;
+
+    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]);
+
+    lcd_send_command(R_ENTRY_MODE);
+    lcd_send_command(0x80);
+
+    lcd_send_command(R_X_ADDR_AREA);
+    lcd_send_command(x);
+    lcd_send_command(x + width - 1);
+
+    if (lcd_yuv_options & LCD_YUV_DITHER)
+    {
+        do
+        {
+            lcd_send_command(R_Y_ADDR_AREA);
+            lcd_send_command(y);
+            lcd_send_command(y + 1);
+
+            /* NOP needed because on some c200s, the previous lcd_send_command
+               is interpreted as a separate command instead of part of
+               R_Y_ADDR_AREA. */
+            lcd_send_command(R_NOP);
+
+            lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
+            yuv_src[0] += stride << 1; /* Skip down two luma lines */
+            yuv_src[1] += stride >> 1; /* Skip down one chroma line */
+            yuv_src[2] += stride >> 1;
+            y += 2;
+        }
+         while (--height > 0);
+    }
+    else
+    {
+        do
+        {
+            lcd_send_command(R_Y_ADDR_AREA);
+            lcd_send_command(y);
+            lcd_send_command(y + 1);
+
+            lcd_send_command(R_NOP);
+
+            lcd_write_yuv420_lines(yuv_src, width, stride);
+            yuv_src[0] += stride << 1; /* Skip down two luma lines */
+            yuv_src[1] += stride >> 1; /* Skip down one chroma line */
+            yuv_src[2] += stride >> 1;
+            y += 2;
+        }
+         while (--height > 0);
+    }
+}
+
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_update(void)
+{
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
+
+/* Update a fraction of the display. */
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    const fb_data *addr;
+    
+    if (x + width >= LCD_WIDTH)
+        width = LCD_WIDTH - x;
+    if (y + height >= LCD_HEIGHT)
+        height = LCD_HEIGHT - y;
+        
+    if ((width <= 0) || (height <= 0))
+        return; /* Nothing left to do. */
+
+    addr = &lcd_framebuffer[y][x];
+
+    if (width <= 1) {                    
+        lcd_send_command(R_ENTRY_MODE);  /* The X end address must be larger */
+        lcd_send_command(0x80);          /* that the X start address, so we */
+        lcd_send_command(R_X_ADDR_AREA); /* switch to vertical mode for */
+        lcd_send_command(x);             /* single column updates and set */
+        lcd_send_command(x + 1);         /* the window width to 2 */
+    } else {
+        lcd_send_command(R_ENTRY_MODE);
+        lcd_send_command(0x82);
+        lcd_send_command(R_X_ADDR_AREA);
+        lcd_send_command(x);
+        lcd_send_command(x + width - 1);
+    }
+
+    lcd_send_command(R_Y_ADDR_AREA);
+    lcd_send_command(y);
+    lcd_send_command(y + height - 1);
+
+    /* NOP needed because on some c200s, the previous lcd_send_command is
+       interpreted as a separate command instead of part of R_Y_ADDR_AREA. */
+    lcd_send_command(R_NOP);
+
+    do {
+        int w = width;
+        do {
+            lcd_send_data(*addr++);
+        } while (--w > 0);
+        addr += LCD_WIDTH - width;
+    } while (--height > 0);
+}