1 files changed, 346 insertions, 0 deletions

diff --git a/firmware/target/arm/tcc780x/cowond2/lcd-cowond2.c b/firmware/target/arm/tcc780x/cowond2/lcd-cowond2.c
new file mode 100644
index 0000000000..181c58669e
--- /dev/null
+++ b/firmware/target/arm/tcc780x/cowond2/lcd-cowond2.c
@@ -0,0 +1,346 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Rob Purchase
+ *
+ * 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 "hwcompat.h"
+#include "kernel.h"
+#include "lcd.h"
+#include "system.h"
+#include "cpu.h"
+#include "i2c.h"
+
+/* GPIO A pins for LCD panel SDI interface */
+
+#define LTV250QV_CS  (1<<24)
+#define LTV250QV_SCL (1<<25)
+#define LTV250QV_SDI (1<<26)
+
+/* LCD Controller registers */
+
+#define LCDC_CTRL    (*(volatile unsigned long *)0xF0000000)
+#define LCDC_CLKDIV  (*(volatile unsigned long *)0xF0000008)
+#define LCDC_HTIME1  (*(volatile unsigned long *)0xF000000C)
+#define LCDC_HTIME2  (*(volatile unsigned long *)0xF0000010)
+#define LCDC_VTIME1  (*(volatile unsigned long *)0xF0000014)
+#define LCDC_VTIME2  (*(volatile unsigned long *)0xF0000018)
+#define LCDC_VTIME3  (*(volatile unsigned long *)0xF000001C)
+#define LCDC_VTIME4  (*(volatile unsigned long *)0xF0000020)
+#define LCDC_DS      (*(volatile unsigned long *)0xF000005C)
+#define LCDC_I1CTRL  (*(volatile unsigned long *)0xF000008C)
+#define LCDC_I1POS   (*(volatile unsigned long *)0xF0000090)
+#define LCDC_I1SIZE  (*(volatile unsigned long *)0xF0000094)
+#define LCDC_I1BASE  (*(volatile unsigned long *)0xF0000098)
+#define LCDC_I1OFF   (*(volatile unsigned long *)0xF00000A8)
+#define LCDC_I1SCALE (*(volatile unsigned long *)0xF00000AC)
+
+/* Power and display status */
+static bool display_on  = false; /* Is the display turned on? */
+
+
+int lcd_default_contrast(void)
+{
+    return 0x1f;
+}
+
+void lcd_set_contrast(int val)
+{
+    /* iirc there is an ltv250qv command to do this */
+    #warning function not implemented
+    (void)val;
+}
+
+
+/* LTV250QV panel functions */
+
+static void ltv250qv_write(unsigned int command)
+{
+    int i;
+    
+    GPIOA_CLEAR = LTV250QV_CS;
+
+    for (i = 23; i >= 0; i--)
+    {
+      GPIOA_CLEAR = LTV250QV_SCL;
+
+      if ((command>>i) & 1)
+        GPIOA_SET = LTV250QV_SDI;
+      else
+        GPIOA_CLEAR = LTV250QV_SDI;
+      
+      GPIOA_SET = LTV250QV_SCL;
+    }
+
+    GPIOA_SET = LTV250QV_CS;
+}
+
+static void lcd_write_reg(unsigned char reg, unsigned short val)
+{
+    ltv250qv_write(0x740000 | reg);
+    ltv250qv_write(0x760000 | val);
+}
+
+
+/* TODO: The existing pcf50606 drivers are target-specific, so the following 
+   lonely function exists until a D2 driver exists. */
+
+void pcf50606_write_reg(unsigned char reg, unsigned char val)
+{
+    unsigned char data[] = { reg, val };
+    i2c_write(0x10, data, 2);
+}
+
+
+/*
+   TEMP: Rough millisecond delay routine used by the LCD panel init sequence.
+   PCK_TCT must first have been initialised to 2Mhz by calling clock_init().
+*/
+static void sleep_ms(unsigned int ms)
+{
+    /* disable timer */
+    TCFG1 = 0;
+
+    /* set Timer1 reference value based on 125kHz tick */
+    TREF1 = ms * 125;
+
+    /* single count, zero the counter, divider = 16 [2^(3+1)], enable */
+    TCFG1 = (1<<9) | (1<<8) | (3<<4) | 1;
+
+    /* wait until Timer1 ref reached */
+    while (!(TIREQ & TF1)) {};
+}
+
+
+static void lcd_display_on(void)
+{
+    /* power on sequence as per the D2 firmware */
+    GPIOA_SET = (1<<16);
+    
+    sleep_ms(10);
+    
+    lcd_write_reg(1,  0x1D);
+    lcd_write_reg(2,  0x0);
+    lcd_write_reg(3,  0x0);
+    lcd_write_reg(4,  0x0);
+    lcd_write_reg(5,  0x40A3);
+    lcd_write_reg(6,  0x0);
+    lcd_write_reg(7,  0x0);
+    lcd_write_reg(8,  0x0);
+    lcd_write_reg(9,  0x0);
+    lcd_write_reg(10, 0x0);
+    lcd_write_reg(16, 0x0);
+    lcd_write_reg(17, 0x0);
+    lcd_write_reg(18, 0x0);
+    lcd_write_reg(19, 0x0);
+    lcd_write_reg(20, 0x0);
+    lcd_write_reg(21, 0x0);
+    lcd_write_reg(22, 0x0);
+    lcd_write_reg(23, 0x0);
+    lcd_write_reg(24, 0x0);
+    lcd_write_reg(25, 0x0);
+    sleep_ms(10);
+    
+    lcd_write_reg(9,  0x4055);
+    lcd_write_reg(10, 0x0);
+    sleep_ms(40);
+    
+    lcd_write_reg(10, 0x2000);
+    sleep_ms(40);
+    
+    lcd_write_reg(1,  0xC01D);
+    lcd_write_reg(2,  0x204);
+    lcd_write_reg(3,  0xE100);
+    lcd_write_reg(4,  0x1000);
+    lcd_write_reg(5,  0x5033);
+    lcd_write_reg(6,  0x4);
+    lcd_write_reg(7,  0x30);
+    lcd_write_reg(8,  0x41C);
+    lcd_write_reg(16, 0x207);
+    lcd_write_reg(17, 0x702);
+    lcd_write_reg(18, 0xB05);
+    lcd_write_reg(19, 0xB05);
+    lcd_write_reg(20, 0x707);
+    lcd_write_reg(21, 0x507);
+    lcd_write_reg(22, 0x103);
+    lcd_write_reg(23, 0x406);
+    lcd_write_reg(24, 0x2);
+    lcd_write_reg(25, 0x0);
+    sleep_ms(60);
+    
+    lcd_write_reg(9,  0xA55);
+    lcd_write_reg(10, 0x111F);
+    sleep_ms(10);
+
+    pcf50606_write_reg(0x35, 0xe9); /* PWMC1 - backlight power (intensity) */
+    pcf50606_write_reg(0x38, 0x3);  /* GPOC1 - ? */
+
+    /* tell that we're on now */
+    display_on = true;
+}
+
+static void lcd_display_off(void)
+{
+    /* block drawing operations and changing of first */
+    display_on = false;
+
+    /* LQV shutdown sequence */
+    lcd_write_reg(9,  0x55);
+    lcd_write_reg(10, 0x1417);
+    lcd_write_reg(5,  0x4003);
+    sleep_ms(10);
+    
+    lcd_write_reg(9, 0x0);
+    sleep_ms(10);
+    
+    /* kill power to LCD panel (unconfirmed) */
+    GPIOA_CLEAR = (1<<16);
+    
+    /* also kill the backlight, otherwise LCD fade is visible on screen */
+    GPIOA_CLEAR = (1<<6);
+}
+
+
+void lcd_enable(bool on)
+{
+    if (on == display_on)
+        return;
+
+    if (on)
+    {
+        lcd_display_on();  /* Turn on display */
+        lcd_update();      /* Resync display */
+    }
+    else
+    {
+        lcd_display_off();  /* Turn off display */
+    }
+}
+
+bool lcd_enabled(void)
+{
+    return display_on;
+}
+
+
+void lcd_init_device(void)
+{
+    BCLKCTR |= 4;   /* enable LCD bus clock */
+    
+    /* set PCK_LCD to 108Mhz */
+    PCLK_LCD &= ~PCK_EN;
+    PCLK_LCD = PCK_EN | (CKSEL_PLL1<<24) | 1;  /* source = PLL1, divided by 2 */
+    
+    /* reset the LCD controller */
+    SWRESET |= 4;
+    SWRESET &= ~4;
+    
+    /* set port configuration */
+    PORTCFG1 &= ~0xC0000000;
+    PORTCFG1 &= ~0x3FC0;
+    PORTCFG2 &= ~0x100;
+    
+    /* set physical display size */
+    LCDC_DS = (LCD_HEIGHT<<16) | LCD_WIDTH;
+
+    LCDC_HTIME1 = (0x2d<<16) | 0x3bf;
+    LCDC_HTIME2 = (1<<16) | 1;
+    LCDC_VTIME1 = LCDC_VTIME3 = (0<<16) | 239;
+    LCDC_VTIME2 = LCDC_VTIME4 = (1<<16) | 3;
+
+    LCDC_I1BASE  = (unsigned int)lcd_framebuffer; /* dirty, dirty hack */
+    LCDC_I1SIZE  = (LCD_HEIGHT<<16) | LCD_WIDTH;  /* image 1 size */
+    //LCDC_I1POS   = (0<<16) | 0;                   /* position */
+    //LCDC_I1OFF   = 0;                             /* address offset */
+    //LCDC_I1SCALE = 0;                             /* scaling */
+    LCDC_I1CTRL  = 5;                             /* 565bpp (7 = 888bpp) */
+    //LCDC_CTRL &= ~(1<<28);
+
+    LCDC_CLKDIV = (LCDC_CLKDIV &~ 0xFF00FF) | (1<<16) | 2; /* and this means? */
+    
+    /* set and clear various flags - not investigated yet */
+    //LCDC_CTRL &~ 0x090006AA;  /* clear bits 1,3,5,7,9,10,24,27 */
+    LCDC_CTRL |= 0x02800144;  /*   set bits 2,6,8,25,23 */
+    LCDC_CTRL = (LCDC_CTRL &~ 0xF0000) | 0x20000;
+    //LCDC_CTRL = (LCDC_CTRL &~ 0x700000) | 0x700000;
+
+    /* enable LCD controller */
+    LCDC_CTRL |= 1;
+}
+
+
+/*** Update functions ***/
+
+
+/* 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)
+{
+    #warning function not implemented
+    /* currently lcd_framebuffer is accessed directly by the hardware */
+}
+
+/* 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)
+{
+    #warning function not implemented
+    (void)x;
+    (void)y;
+    (void)width;
+    (void)height;
+}
+
+void lcd_set_flip(bool yesno)
+{
+    #warning function not implemented
+    (void)yesno;
+}
+
+void lcd_set_invert_display(bool yesno)
+{
+    #warning function not implemented
+    (void)yesno;
+}
+
+void lcd_blit(const fb_data* data, int bx, int y, int bwidth,
+              int height, int stride)
+{
+    #warning function not implemented
+    (void)data;
+    (void)bx;
+    (void)y;
+    (void)bwidth;
+    (void)height;
+    (void)stride;
+}
+
+void lcd_yuv_blit(unsigned char * const src[3],
+                  int src_x, int src_y, int stride,
+                  int x, int y, int width, int height)
+{
+    #warning function not implemented
+    (void)src;
+    (void)src_x;
+    (void)src_y;
+    (void)stride;
+    (void)x;
+    (void)y;
+    (void)width;
+    (void)height;
+}