1 files changed, 420 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_jz47xx/xduoo_x3/lcd-xduoo_x3.c b/firmware/target/mips/ingenic_jz47xx/xduoo_x3/lcd-xduoo_x3.c
new file mode 100644
index 0000000000..89251b727d
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/xduoo_x3/lcd-xduoo_x3.c
@@ -0,0 +1,420 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2016 by Roman Stolyarov
+ *
+ * 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 "lcd.h"
+#include "system.h"
+#include "cpu.h"
+#include "string.h"
+
+/* LCD pins */
+#define PIN_BL_EN   (32*4+0)
+
+#define PIN_LCD_D0  (32*2+2)
+#define PIN_LCD_D1  (32*2+3)
+#define PIN_LCD_D2  (32*2+4)
+#define PIN_LCD_D3  (32*2+5)
+#define PIN_LCD_D4  (32*2+6)
+#define PIN_LCD_D5  (32*2+7)
+#define PIN_LCD_D6  (32*2+12)
+#define PIN_LCD_D7  (32*2+13)
+
+#define PIN_LCD_RD  (32*2+8)
+#define PIN_LCD_DC  (32*2+9)
+#define PIN_LCD_CS  (32*2+14)
+#define PIN_LCD_RES (32*2+18)
+#define PIN_LCD_WR  (32*2+19)
+
+/* LCD setup codes */
+#define LCD_SET_LOWER_COLUMN_ADDRESS              ((char)0x00)
+#define LCD_SET_HIGHER_COLUMN_ADDRESS             ((char)0x10)
+#define LCD_SET_DISPLAY_START_LINE                ((char)0x40)
+#define LCD_SET_CONTRAST_CONTROL_REGISTER         ((char)0x81)
+#define LCD_SET_CHARGE_PUMP                       ((char)0x8D)
+#define LCD_SET_SEGMENT_REMAP                     ((char)0xA0)
+#define LCD_SET_SEGMENT_REMAP_INV                 ((char)0xA1)
+#define LCD_SET_ENTIRE_DISPLAY_OFF                ((char)0xA4)
+#define LCD_SET_ENTIRE_DISPLAY_ON                 ((char)0xA5)
+#define LCD_SET_NORMAL_DISPLAY                    ((char)0xA6)
+#define LCD_SET_REVERSE_DISPLAY                   ((char)0xA7)
+#define LCD_SET_MULTIPLEX_RATIO                   ((char)0xA8)
+#define LCD_SET_DC_DC                             ((char)0xAD)
+#define LCD_SET_DISPLAY_OFF                       ((char)0xAE)
+#define LCD_SET_DISPLAY_ON                        ((char)0xAF)
+#define LCD_SET_PAGE_ADDRESS                      ((char)0xB0)
+#define LCD_SET_COM_OUTPUT_SCAN_DIRECTION         ((char)0xC0)
+#define LCD_SET_COM_OUTPUT_SCAN_DIRECTION_INV     ((char)0xC8)
+#define LCD_SET_DISPLAY_OFFSET                    ((char)0xD3)
+#define LCD_SET_DISPLAY_CLOCK_AND_OSC_FREQ        ((char)0xD5)
+#define LCD_SET_VCOM_HW_CONFIGURATION             ((char)0xDA)
+#define LCD_SET_VCOM_DESELECT_LEVEL               ((char)0xDB)
+#define LCD_SET_PRECHARGE_PERIOD                  ((char)0xD9)
+#define LCD_NOP                                   ((char)0xE3)
+
+/* LCD command codes */
+#define LCD_CNTL_CONTRAST       0x81    /* Contrast */
+#define LCD_CNTL_OUTSCAN        0xc8    /* Output scan direction */
+#define LCD_CNTL_SEGREMAP       0xa1    /* Segment remap */
+#define LCD_CNTL_DISPON         0xaf    /* Display on */
+
+#define LCD_CNTL_PAGE           0xb0    /* Page address */
+#define LCD_CNTL_HIGHCOL        0x10    /* Upper column address */
+#define LCD_CNTL_LOWCOL         0x00    /* Lower column address */
+
+#define LCD_COL_OFFSET 2 /* column offset */
+
+static inline void bitdelay(void)
+{
+    unsigned int i = 15;
+    __asm__ __volatile__ (
+                          ".set noreorder    \n"
+                          "1:                \n"
+                          "bne  %0, $0, 1b   \n"
+                          "addi %0, %0, -1   \n"
+                          ".set reorder      \n"
+                          : "=r" (i)
+                          : "0" (i)
+                          );
+}
+
+void lcd_hw_init(void)
+{
+    REG_GPIO_PXFUNC(2) = 0x000C73FC; /* D0-D7 RD DC CS RES WR */
+    REG_GPIO_PXSELC(2) = 0x000C73FC;
+    REG_GPIO_PXDIRS(2) = 0x000C73FC;
+    REG_GPIO_PXDATS(2) = 0x000C73FC;
+    __gpio_clear_pin(PIN_BL_EN);
+    __gpio_as_output(PIN_BL_EN);
+    __gpio_clear_pin(PIN_LCD_RES);
+    udelay(1);
+    __gpio_set_pin(PIN_LCD_RES);
+    __gpio_clear_pin(PIN_LCD_CS);
+}
+
+void lcd_write_command(int byte)
+{
+    __gpio_clear_pin(PIN_LCD_DC);
+    REG_GPIO_PXDATC(2) = 0x000030FC;
+    REG_GPIO_PXDATS(2) = ((byte & 0xC0) << 6) | ((byte & 0x3F) << 2);
+    __gpio_clear_pin(PIN_LCD_WR);
+    bitdelay();
+    __gpio_set_pin(PIN_LCD_WR);
+    bitdelay();
+}
+
+void lcd_write_data(const fb_data* p_bytes, int count)
+{
+    __gpio_set_pin(PIN_LCD_DC);
+    while (count--)
+    {
+        REG_GPIO_PXDATC(2) = 0x000030FC;
+        REG_GPIO_PXDATS(2) = ((*p_bytes & 0xC0) << 6) | ((*p_bytes & 0x3F) << 2);
+        p_bytes++;
+        __gpio_clear_pin(PIN_LCD_WR);
+        bitdelay();
+        __gpio_set_pin(PIN_LCD_WR);
+        bitdelay();
+    }
+}
+
+void lcd_enable_power(bool onoff)
+{
+    if (onoff)
+        __gpio_set_pin(PIN_BL_EN);
+    else
+        __gpio_clear_pin(PIN_BL_EN);
+}
+
+/** globals **/
+
+static bool display_on = false; /* used by lcd_enable */
+
+/*** hardware configuration ***/
+
+void lcd_set_contrast(int val)
+{
+    lcd_write_command(LCD_CNTL_CONTRAST);
+    lcd_write_command(val);
+}
+
+void lcd_set_invert_display(bool yesno)
+{
+    if (yesno)
+        lcd_write_command(LCD_SET_REVERSE_DISPLAY);
+    else
+        lcd_write_command(LCD_SET_NORMAL_DISPLAY);
+}
+
+/* turn the display upside down (call lcd_update() afterwards) */
+void lcd_set_flip(bool yesno)
+{
+    if (yesno)
+    {
+        lcd_write_command(LCD_SET_SEGMENT_REMAP);
+        lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION);
+    }
+    else
+    {
+        lcd_write_command(LCD_SET_SEGMENT_REMAP_INV);
+        lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION_INV);
+    }
+}
+
+#ifdef HAVE_LCD_ENABLE
+void lcd_enable(bool enable)
+{
+    if(display_on == enable)
+        return;
+
+    if( (display_on = enable) ) /* simple '=' is not a typo ! */
+    {
+        lcd_enable_power(enable);
+        lcd_write_command(LCD_SET_DISPLAY_ON);
+        send_event(LCD_EVENT_ACTIVATION, NULL);
+    }
+    else
+    {
+        lcd_write_command(LCD_SET_DISPLAY_OFF);
+        lcd_enable_power(enable);
+    }
+}
+
+bool lcd_active(void)
+{
+    return display_on;
+}
+#endif
+
+/* LCD init, largely based on what OF does */
+void lcd_init_device(void)
+{
+    int i;
+
+    lcd_hw_init();
+
+    /* Set display off */
+    lcd_write_command(LCD_SET_DISPLAY_OFF);
+
+    /* Set display clock and oscillator frequency */
+    lcd_write_command(LCD_SET_DISPLAY_CLOCK_AND_OSC_FREQ);
+    lcd_write_command(0x80);
+
+    /* Set multiplex ratio*/
+    lcd_write_command(LCD_SET_MULTIPLEX_RATIO);
+    lcd_write_command(0x3F);
+
+    /* Set display offset */
+    lcd_write_command(LCD_SET_DISPLAY_OFFSET);
+    lcd_write_command(0x00);
+
+    /* Set starting line as 0 */
+    lcd_write_command(LCD_SET_DISPLAY_START_LINE);
+
+    /* Set charge pump */
+    lcd_write_command(LCD_SET_CHARGE_PUMP);
+    lcd_write_command(0x14); /* VCC Generated by Internal DC/DC Circuit */
+
+    /* Column 131 is remapped to SEG0 */
+    lcd_write_command(LCD_SET_SEGMENT_REMAP_INV);
+
+    /* Invert COM scan direction (N-1 to 0) */
+    lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION_INV);
+
+    /* Set COM hardware configuration */
+    lcd_write_command(LCD_SET_VCOM_HW_CONFIGURATION);
+    lcd_write_command(0x12);
+
+    /* Set contrast control */
+    lcd_write_command(LCD_SET_CONTRAST_CONTROL_REGISTER);
+    lcd_write_command(0xCF); /* VCC Generated by Internal DC/DC Circuit */
+
+    /* Set pre-charge period */
+    lcd_write_command(LCD_SET_PRECHARGE_PERIOD);
+    lcd_write_command(0xF1); /* VCC Generated by Internal DC/DC Circuit */
+
+    /* Set VCOM deselect level */
+    lcd_write_command(LCD_SET_VCOM_DESELECT_LEVEL);
+    lcd_write_command(0x40);
+
+    /* Set normal display mode (not every pixel ON) */
+    lcd_write_command(LCD_SET_ENTIRE_DISPLAY_OFF);
+
+    /* Set normal display mode (not inverted) */
+    lcd_write_command(LCD_SET_NORMAL_DISPLAY);
+
+    fb_data p_bytes[LCD_WIDTH + 2 * LCD_COL_OFFSET];
+    memset(p_bytes, 0, sizeof(p_bytes)); /* fills with 0 : pixel off */
+    for(i = 0; i < 8; i++)
+    {
+        lcd_write_command (LCD_SET_PAGE_ADDRESS | (i /*& 0xf*/));
+        lcd_write_data(p_bytes, LCD_WIDTH + 2 * LCD_COL_OFFSET);
+    }
+
+    lcd_enable(true);
+
+    lcd_update();
+}
+
+/*** Update functions ***/
+
+/* Performance function that works with an external buffer
+   note that by and bheight are in 8-pixel units! */
+void lcd_blit_mono(const unsigned char *data, int x, int by, int width,
+                   int bheight, int stride)
+{
+    if(!display_on)
+        return;
+
+    /* Copy display bitmap to hardware */
+    while (bheight--)
+    {
+        lcd_write_command (LCD_CNTL_PAGE | (by++ & 0xf));
+        lcd_write_command (LCD_CNTL_HIGHCOL | (((x+LCD_COL_OFFSET)>>4) & 0xf));
+        lcd_write_command (LCD_CNTL_LOWCOL | ((x+LCD_COL_OFFSET) & 0xf));
+
+        lcd_write_data(data, width);
+        data += stride;
+    }
+}
+
+
+#ifndef BOOTLOADER
+/* Helper function for lcd_grey_phase_blit(). */
+void lcd_grey_data(unsigned char *values, unsigned char *phases, int count) ICODE_ATTR;
+void lcd_grey_data(unsigned char *values, unsigned char *phases, int count)
+{
+    unsigned char a, b, c, d;
+
+    __gpio_set_pin(PIN_LCD_DC);
+    while(count--)
+    {
+        c = 0;
+        d = 8;
+        while(d--)
+        {
+            a = *phases;
+            b = *values++;
+            b += a & ~0x80;
+            *phases++ = b;
+            c <<= 1;
+            c |= a >> 7;
+        }
+        REG_GPIO_PXDATC(2) = 0x000030FC;
+        REG_GPIO_PXDATS(2) = ((c & 0xC0) << 6) | ((c & 0x3F) << 2);
+        __gpio_clear_pin(PIN_LCD_WR);
+        bitdelay();
+        __gpio_set_pin(PIN_LCD_WR);
+        bitdelay();
+    }
+}
+
+/* Performance function that works with an external buffer
+   note that by and bheight are in 8-pixel units! */
+void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases,
+                         int x, int by, int width, int bheight, int stride)
+{
+    if(!display_on)
+        return;
+
+    stride <<= 3; /* 8 pixels per block */
+    /* Copy display bitmap to hardware */
+    while (bheight--)
+    {
+        lcd_write_command (LCD_CNTL_PAGE | (by++ & 0xf));
+        lcd_write_command (LCD_CNTL_HIGHCOL | (((x+LCD_COL_OFFSET)>>4) & 0xf));
+        lcd_write_command (LCD_CNTL_LOWCOL | ((x+LCD_COL_OFFSET) & 0xf));
+
+        lcd_grey_data(values, phases, width);
+
+        values += stride;
+        phases += stride;
+    }
+}
+#endif
+
+/* 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)
+{
+    int y;
+
+    if(!display_on)
+        return;
+
+    /* Copy display bitmap to hardware */
+    for (y = 0; y < LCD_FBHEIGHT; y++)
+    {
+        lcd_write_command (LCD_CNTL_PAGE | (y & 0xf));
+        lcd_write_command (LCD_CNTL_HIGHCOL | ((LCD_COL_OFFSET >> 4) & 0xf));
+        lcd_write_command (LCD_CNTL_LOWCOL | (LCD_COL_OFFSET & 0xf));
+
+        lcd_write_data (FBADDR(0, y), LCD_WIDTH);
+    }
+}
+
+/* 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 ymax;
+
+    if(!display_on)
+        return;
+
+    /* The Y coordinates have to work on even 8 pixel rows */
+    if (x < 0)
+    {
+        width += x;
+        x = 0;
+    }
+
+    if (x + width > LCD_WIDTH)
+        width = LCD_WIDTH - x;
+
+    if (width <= 0)
+        return; /* nothing left to do, 0 is harmful to lcd_write_data() */
+
+    if (y < 0)
+    {
+        height += y;
+        y = 0;
+    }
+
+    if (y + height > LCD_HEIGHT)
+        height = LCD_HEIGHT - y;
+
+    if (height <= 0)
+        return; /* nothing left to do */
+
+    ymax = (y + height-1) >> 3;
+    y >>= 3;
+
+    /* Copy specified rectange bitmap to hardware */
+    for (; y <= ymax; y++)
+    {
+        lcd_write_command (LCD_CNTL_PAGE | (y & 0xf));
+        lcd_write_command (LCD_CNTL_HIGHCOL | (((x+LCD_COL_OFFSET) >> 4) & 0xf));
+        lcd_write_command (LCD_CNTL_LOWCOL | ((x+LCD_COL_OFFSET) & 0xf));
+
+        lcd_write_data (FBADDR(x,y), width);
+    }
+}