1 files changed, 207 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/creative-zen/lcd-zenv.c b/firmware/target/arm/imx233/creative-zen/lcd-zenv.c
new file mode 100644
index 0000000000..3bc8e67e5d
--- /dev/null
+++ b/firmware/target/arm/imx233/creative-zen/lcd-zenv.c
@@ -0,0 +1,207 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2013 by Amaury Pouly
+ *
+ * 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 <sys/types.h> /* off_t */
+#include <string.h>
+#include "cpu.h"
+#include "system.h"
+#include "backlight-target.h"
+#include "lcd.h"
+#include "lcdif-imx233.h"
+#include "clkctrl-imx233.h"
+#include "pinctrl-imx233.h"
+#include "dcp-imx233.h"
+#include "logf.h"
+#ifndef BOOTLOADER
+#include "button.h"
+#include "font.h"
+#include "action.h"
+#endif
+
+#ifdef HAVE_LCD_ENABLE
+static bool lcd_on;
+#endif
+
+static bool lcd_has_power;
+static bool lcd_kind;
+
+static void lcd_send(bool data, uint8_t val)
+{
+    imx233_lcdif_pio_send(data, 1, &val);
+}
+
+void lcd_init_device(void)
+{
+    // determine power type
+    imx233_pinctrl_acquire(3, 16, "lcd power kind");
+    imx233_pinctrl_set_function(3, 16, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_enable_gpio(3, 16, false);
+    udelay(10);
+    lcd_has_power = !imx233_pinctrl_get_gpio(3, 16);
+    if(lcd_has_power)
+    {
+        imx233_pinctrl_acquire(0, 27, "lcd power");
+        imx233_pinctrl_set_function(0, 27, PINCTRL_FUNCTION_GPIO);
+        imx233_pinctrl_enable_gpio(0, 27, true);
+        imx233_pinctrl_set_gpio(0, 27, true);
+    }
+    // determine kind (don't acquire pin because it's a lcdif pin !)
+    imx233_pinctrl_set_function(1, 0, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_enable_gpio(1, 0, false);
+    udelay(10);
+    lcd_kind = imx233_pinctrl_get_gpio(1, 0);
+
+    imx233_lcdif_init();
+    imx233_lcdif_reset_lcd(false);
+    imx233_lcdif_reset_lcd(true);
+    imx233_lcdif_setup_system_pins(16);
+    imx233_lcdif_set_timings(2, 2, 2, 2);
+    imx233_lcdif_set_word_length(8);
+    // set mux ratio
+    lcd_send(false, 0xca); lcd_send(true, 131);
+    // set remap, color and depth
+    lcd_send(false, 0xa0); lcd_send(true, 0x74);
+    // set master contrast
+    lcd_send(false, 0xc7); lcd_send(true, 0x8);
+    // set V_COMH
+    lcd_send(false, 0xbe); lcd_send(true, lcd_kind ? 0x1c : 0x18);
+    // set color contrasts
+    lcd_send(false, 0xc1); lcd_send(true, 0x7b); lcd_send(true, 0x69); lcd_send(true, lcd_kind ? 0xcf : 0x9f);
+    // set timings
+    lcd_send(false, 0xb1); lcd_send(true, 0x1f);
+    lcd_send(false, 0xb3); lcd_send(true, 0x80);
+    // set precharge voltages
+    lcd_send(false, 0xbb); lcd_send(true, 0x00); lcd_send(true, 0x00); lcd_send(true, 0x00);
+    // set master config
+    lcd_send(false, 0xad); lcd_send(true, 0x8a);
+    // set power saving mode
+    lcd_send(false, 0xb0); lcd_send(true, 0x00);
+    // set normal display (seem to be a SSD1338 only command, not present in SS1339 datasheet)
+    lcd_send(false, 0xd1); lcd_send(true, 0x02);
+    // set LUT
+    lcd_send(false, 0xb8);
+    static uint8_t lut[32] =
+    {
+        0x01, 0x15, 0x19, 0x1D, 0x21, 0x25, 0x29, 0x2D, 0x31, 0x35, 0x39, 0x3D,
+        0x41, 0x45, 0x49, 0x4D, 0x51, 0x55, 0x59, 0x5D, 0x61, 0x65, 0x69, 0x6D,
+        0x71, 0x75, 0x79, 0x7D, 0x81, 0x85, 0x89, 0x8D
+    };
+    for(int i = 0; i < 32; i++)
+        lcd_send(true, lut[i]);
+    // set display offset (this lcd is really wired strangely)
+    lcd_send(false, 0xa2); lcd_send(true, 128);
+    // normal display
+    lcd_send(false, 0xa6);
+    // sleep mode off
+    lcd_send(false, 0xaf);
+
+    // write ram
+    lcd_send(false, 0x5c);
+    imx233_lcdif_set_word_length(16);
+    for(int y = 0; y < LCD_HEIGHT; y++)
+        for(int x = 0; x < LCD_WIDTH; x++)
+        {
+            uint16_t v = 0;
+            imx233_lcdif_pio_send(true, 1, &v);
+        }
+#ifdef HAVE_LCD_ENABLE
+    lcd_on = true;
+#endif
+}
+
+#ifdef HAVE_LCD_ENABLE
+bool lcd_active(void)
+{
+    return lcd_on;
+}
+
+void lcd_enable(bool enable)
+{
+    if(lcd_on == enable)
+        return;
+
+    lcd_on = enable;
+}
+#endif
+
+void lcd_set_contrast(int val)
+{
+    // NOTE: this should not interfere with lcd_update_rect
+    imx233_lcdif_wait_ready();
+    imx233_lcdif_set_word_length(8);
+    // set contrast
+    lcd_send(false, 0xc7); lcd_send(true, val);
+}
+
+void lcd_update(void)
+{
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
+
+void lcd_update_rect(int x, int y, int w, int h)
+{
+    #ifdef HAVE_LCD_ENABLE
+    if(!lcd_on)
+        return;
+    #endif
+
+    imx233_lcdif_wait_ready();
+    imx233_lcdif_set_word_length(8);
+    // set column address
+    lcd_send(false, 0x15); lcd_send(true, x); lcd_send(true, x + w - 1);
+    // set row address
+    lcd_send(false, 0x75); lcd_send(true, y); lcd_send(true, y + h - 1);
+    lcd_send(false, 0x5c);
+    imx233_lcdif_set_word_length(16);
+    for(int yy = y; yy < y + h; yy++)
+        imx233_lcdif_pio_send(true, w, FBADDR(x, yy));
+}
+
+#ifndef BOOTLOADER
+bool lcd_debug_screen(void)
+{
+    lcd_setfont(FONT_SYSFIXED);
+
+    while(1)
+    {
+        int button = get_action(CONTEXT_STD, HZ / 10);
+        switch(button)
+        {
+            case ACTION_STD_NEXT:
+            case ACTION_STD_PREV:
+            case ACTION_STD_OK:
+            case ACTION_STD_MENU:
+                lcd_setfont(FONT_UI);
+                return true;
+            case ACTION_STD_CANCEL:
+                lcd_setfont(FONT_UI);
+                return false;
+        }
+
+        lcd_clear_display();
+        lcd_putsf(0, 0, "has power: %d", lcd_has_power);
+        lcd_putsf(0, 1, "lcd kind: %d", lcd_kind);
+        lcd_update();
+        yield();
+    }
+
+    return true;
+}
+#endif