209 lines
6 KiB
C
209 lines
6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2013 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <sys/types.h> /* off_t */
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#include <string.h>
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#include "cpu.h"
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#include "system.h"
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#include "backlight-target.h"
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#include "lcd.h"
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#include "lcdif-imx233.h"
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#include "clkctrl-imx233.h"
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#include "pinctrl-imx233.h"
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#include "dcp-imx233.h"
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#include "logf.h"
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#ifndef BOOTLOADER
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#include "button.h"
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#include "font.h"
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#include "action.h"
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#endif
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#ifdef HAVE_LCD_ENABLE
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static bool lcd_on;
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#endif
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static bool lcd_has_power;
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static bool lcd_kind;
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static void lcd_send(bool data, uint8_t val)
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{
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imx233_lcdif_pio_send(data, 1, &val);
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}
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void lcd_init_device(void)
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{
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// determine power type
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imx233_pinctrl_acquire(3, 16, "lcd power kind");
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imx233_pinctrl_set_function(3, 16, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(3, 16, false);
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udelay(10);
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lcd_has_power = !imx233_pinctrl_get_gpio(3, 16);
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if(lcd_has_power)
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{
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imx233_pinctrl_acquire(0, 27, "lcd power");
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imx233_pinctrl_set_function(0, 27, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(0, 27, true);
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imx233_pinctrl_set_gpio(0, 27, true);
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}
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// determine kind (don't acquire pin because it's a lcdif pin !)
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imx233_pinctrl_set_function(1, 0, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(1, 0, false);
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udelay(10);
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lcd_kind = imx233_pinctrl_get_gpio(1, 0);
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imx233_lcdif_init();
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imx233_lcdif_reset_lcd(false);
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imx233_lcdif_reset_lcd(true);
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imx233_lcdif_setup_system_pins(16);
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imx233_lcdif_set_timings(2, 2, 2, 2);
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imx233_lcdif_set_word_length(8);
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// set mux ratio
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lcd_send(false, 0xca); lcd_send(true, 131);
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// set remap, color and depth
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lcd_send(false, 0xa0); lcd_send(true, 0x74);
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// set master contrast
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lcd_send(false, 0xc7); lcd_send(true, 0x8);
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// set V_COMH
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lcd_send(false, 0xbe); lcd_send(true, lcd_kind ? 0x1c : 0x18);
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// set color contrasts
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lcd_send(false, 0xc1); lcd_send(true, 0x7b); lcd_send(true, 0x69); lcd_send(true, lcd_kind ? 0xcf : 0x9f);
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// set timings
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lcd_send(false, 0xb1); lcd_send(true, 0x1f);
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lcd_send(false, 0xb3); lcd_send(true, 0x80);
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// set precharge voltages
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lcd_send(false, 0xbb); lcd_send(true, 0x00); lcd_send(true, 0x00); lcd_send(true, 0x00);
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// set master config
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lcd_send(false, 0xad); lcd_send(true, 0x8a);
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// set power saving mode
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lcd_send(false, 0xb0); lcd_send(true, 0x00);
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// set normal display (seem to be a SSD1338 only command, not present in SS1339 datasheet)
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lcd_send(false, 0xd1); lcd_send(true, 0x02);
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// set LUT
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lcd_send(false, 0xb8);
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static uint8_t lut[32] =
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{
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0x01, 0x15, 0x19, 0x1D, 0x21, 0x25, 0x29, 0x2D, 0x31, 0x35, 0x39, 0x3D,
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0x41, 0x45, 0x49, 0x4D, 0x51, 0x55, 0x59, 0x5D, 0x61, 0x65, 0x69, 0x6D,
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0x71, 0x75, 0x79, 0x7D, 0x81, 0x85, 0x89, 0x8D
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};
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for(int i = 0; i < 32; i++)
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lcd_send(true, lut[i]);
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// set display offset (this lcd is really wired strangely)
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lcd_send(false, 0xa2); lcd_send(true, 128);
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// normal display
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lcd_send(false, 0xa6);
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// sleep mode off
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lcd_send(false, 0xaf);
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// write ram
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lcd_send(false, 0x5c);
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imx233_lcdif_set_word_length(16);
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for(int y = 0; y < LCD_HEIGHT; y++)
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for(int x = 0; x < LCD_WIDTH; x++)
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{
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uint16_t v = 0;
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imx233_lcdif_pio_send(true, 1, &v);
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}
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#ifdef HAVE_LCD_ENABLE
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lcd_on = true;
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#endif
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}
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#ifdef HAVE_LCD_ENABLE
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bool lcd_active(void)
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{
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return lcd_on;
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}
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void lcd_enable(bool enable)
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{
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if(lcd_on == enable)
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return;
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lcd_on = enable;
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if(enable)
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send_event(LCD_EVENT_ACTIVATION, NULL);
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}
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#endif
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void lcd_set_contrast(int val)
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{
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// NOTE: this should not interfere with lcd_update_rect
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imx233_lcdif_wait_ready();
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imx233_lcdif_set_word_length(8);
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// set contrast
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lcd_send(false, 0xc7); lcd_send(true, val);
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}
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void lcd_update(void)
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{
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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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void lcd_update_rect(int x, int y, int w, int h)
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{
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#ifdef HAVE_LCD_ENABLE
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if(!lcd_on)
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return;
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#endif
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imx233_lcdif_wait_ready();
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imx233_lcdif_set_word_length(8);
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// set column address
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lcd_send(false, 0x15); lcd_send(true, x); lcd_send(true, x + w - 1);
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// set row address
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lcd_send(false, 0x75); lcd_send(true, y); lcd_send(true, y + h - 1);
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lcd_send(false, 0x5c);
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imx233_lcdif_set_word_length(16);
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for(int yy = y; yy < y + h; yy++)
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imx233_lcdif_pio_send(true, w, FBADDR(x, yy));
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}
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#ifndef BOOTLOADER
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bool lcd_debug_screen(void)
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{
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lcd_setfont(FONT_SYSFIXED);
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while(1)
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{
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int button = get_action(CONTEXT_STD, HZ / 10);
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switch(button)
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{
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case ACTION_STD_NEXT:
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case ACTION_STD_PREV:
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case ACTION_STD_OK:
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case ACTION_STD_MENU:
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lcd_setfont(FONT_UI);
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return true;
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case ACTION_STD_CANCEL:
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lcd_setfont(FONT_UI);
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return false;
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}
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lcd_clear_display();
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lcd_putsf(0, 0, "has power: %d", lcd_has_power);
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lcd_putsf(0, 1, "lcd kind: %d", lcd_kind);
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lcd_update();
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yield();
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}
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return true;
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}
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#endif
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