564 lines
14 KiB
C
564 lines
14 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) 2008 by Mark Arigo
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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 "config.h"
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#include "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "system.h"
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/* Settings to remember when display is turned off */
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static bool invert;
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static bool flip;
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static int contrast;
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static bool power_on;
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static bool display_on;
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/* Forward declarations */
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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static void lcd_display_off(void);
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#endif
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/* The SA9200 controller closely matches the register defines for the
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Samsung S6D0151 */
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#define R_START_OSC 0x00
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#define R_DRV_OUTPUT_CONTROL 0x01
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#define R_INVERSION_CONTROL 0x02
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#define R_ENTRY_MODE 0x03
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#define R_DISP_CONTROL 0x07
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#define R_BLANK_PERIOD_CONTROL 0x08
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#define R_FRAME_CYCLE_CONTROL 0x0b
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#define R_EXT_INTERFACE_CONTROL 0x0c
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#define R_POWER_CONTROL1 0x10
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#define R_GAMMA_CONTROL1 0x11
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#define R_POWER_CONTROL2 0x12
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#define R_POWER_CONTROL3 0x13
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#define R_POWER_CONTROL4 0x14
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#define R_RAM_ADDR_SET 0x21
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#define R_WRITE_DATA_2_GRAM 0x22
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#define R_RAM_READ_DATA 0x22
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#define R_GAMMA_FINE_ADJ_POS1 0x30
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#define R_GAMMA_FINE_ADJ_POS2 0x31
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#define R_GAMMA_FINE_ADJ_POS3 0x32
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#define R_GAMMA_GRAD_ADJ_POS 0x33
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#define R_GAMMA_FINE_ADJ_NEG1 0x34
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#define R_GAMMA_FINE_ADJ_NEG2 0x35
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#define R_GAMMA_FINE_ADJ_NEG3 0x36
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#define R_GAMMA_GRAD_ADJ_NEG 0x37
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#define R_GAMMA_CONTROL3 0x38
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#define R_GATE_SCAN_START_POS 0x40
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#define R_1ST_SCR_DRV_POS 0x42
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#define R_2ND_SCR_DRV_POS 0x43
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#define R_HORIZ_RAM_ADDR_POS 0x44
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#define R_VERT_RAM_ADDR_POS 0x45
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#define R_OSC_CONTROL 0x61
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#define R_LOW_POWER_MODE 0x69
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#define R_PRE_DRIVING_PERIOD 0x70
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#define R_GATE_OUT_PERIOD_CTRL 0x71
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#define R_SOFTWARE_RESET 0x72
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/* Display status */
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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/* wait for LCD */
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static inline void lcd_wait_write(void)
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{
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while (LCD1_CONTROL & LCD1_BUSY_MASK);
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}
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/* send LCD pixel */
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static inline void lcd_send_pixel(unsigned pixel)
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{
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lcd_wait_write();
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*(volatile uint8_t *)&LCD1_DATA = pixel >> 8;
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lcd_wait_write();
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*(volatile uint8_t *)&LCD1_DATA = pixel;
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}
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/* send LCD data */
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static void lcd_send_data(unsigned data)
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{
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lcd_wait_write();
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LCD1_DATA = data >> 8;
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lcd_wait_write();
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LCD1_DATA = data & 0xff;
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}
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/* send LCD command */
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static void lcd_send_command(unsigned cmd)
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{
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lcd_wait_write();
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LCD1_CMD = 0;
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lcd_wait_write();
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LCD1_CMD = cmd;
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}
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static void lcd_write_reg(unsigned reg, unsigned data)
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{
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lcd_send_command(reg);
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lcd_send_data(data);
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}
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/* LCD init */
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void lcd_init_device(void)
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{
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#if 0
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/* This is done by the OF bootloader, no need to redo */
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DEV_INIT1 &= ~0x3000;
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DEV_INIT1 = DEV_INIT1;
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DEV_INIT2 &= ~0x400;
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LCD1_CONTROL = 0x4680;
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udelay(1500);
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LCD1_CONTROL = 0x4684;
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outl(1, 0x70003018);
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LCD1_CONTROL &= ~0x200;
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LCD1_CONTROL &= ~0x800;
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LCD1_CONTROL &= ~0x400;
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udelay(30000);
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#endif
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/* Already on */
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power_on = true;
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display_on = true;
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/* Reset the options */
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lcd_set_invert_display(false);
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lcd_set_flip(false);
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lcd_set_contrast(DEFAULT_CONTRAST_SETTING);
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}
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#ifdef HAVE_LCD_SLEEP
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static void lcd_power_on(void)
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{
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LCD1_CONTROL |= 0x1;
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/** Power ON Sequence **/
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/* Start Oscillation */
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lcd_write_reg(R_START_OSC, 0x0001);
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sleep(HZ/20); /* 50ms or more */
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/* DSTB=0, SAP2-0=001, BT2-0=101, DC2-0=000, AP2-0=001, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0d04);
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/* VR1C=0, VRN14-10=10111, VRP14-10=11111 */
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lcd_write_reg(R_GAMMA_CONTROL1, 0x171f);
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/* SVC3-0=0000, VRH5-4=01 */
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lcd_write_reg(R_POWER_CONTROL2, 0x0001);
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/* VCMR=1, PON=0, VRH3-0=1101 */
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lcd_write_reg(R_POWER_CONTROL3, 0x080d);
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/* VDV6-0=0000100, VCOMG=0, VCM6-0=xxxxxxx */
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lcd_write_reg(R_POWER_CONTROL4, 0x0400 | contrast);
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/* DSTB=0, SAP2-0=010, BT2-0=010, DC2-0=000, AP2-0=010, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x1208);
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sleep(HZ/20); /* 50ms or more */
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/* VCMR=1, PON=1, VRH3-0=1100 */
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lcd_write_reg(R_POWER_CONTROL3, 0x081c);
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sleep(HZ/20); /* OF bootlaoder uses 200ms, no delay in OF firmware */
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/* Instructions for other mode settings (in register order). */
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lcd_write_reg(R_DRV_OUTPUT_CONTROL, flip ? 0x090c : 0x0a0c);
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/* FL1-0=10, FDL=0 */
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lcd_write_reg(R_INVERSION_CONTROL, 0x0200);
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/* BGR=1, MDT1-0=00, I/D1-0=11, AM=0 */
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lcd_write_reg(R_ENTRY_MODE, 0x1030);
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/* PT1-0=00, SPT=0, GON=0, DTE=0, CL=0, REV=1, D1-0=01 */
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lcd_write_reg(R_DISP_CONTROL, 0x0005);
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/* FP3-0=0011, BT3-0=1010 */
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lcd_write_reg(R_BLANK_PERIOD_CONTROL, 0x030a);
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/* DIV1-0=00, RTN3-0=0000 */
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lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0000);
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/* RM=0, DM1-0=00, RIM1-0=00 */
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lcd_write_reg(R_EXT_INTERFACE_CONTROL, 0x0000);
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/* PKP1=0x0, PKP0=0x0 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0000);
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/* PKP3=0x2, PKP2=0x4 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0204);
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/* PKP5=0x0, PKP4=0x1 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0001);
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/* PRP1=0x6, PRP0=0x0 */
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lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0600);
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/* PKN1=0x6, PKN0=0x7 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0607);
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/* PKN3=0x3, PKN2=0x5 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0305);
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/* PKN5=0x7, PKN4=0x7 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0707);
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/* PRN1=0x0, PRN0=0x6 */
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lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0006);
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/* VRN0=0x4, VRP=0x0 */
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lcd_write_reg(R_GAMMA_CONTROL3, 0x0400);
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/* SCN=0x0 */
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lcd_write_reg(R_GATE_SCAN_START_POS, 0x0000);
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/* SE1=LCD_HEIGHT-1, SS1=0x0 */
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lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
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/* SE2=0x0, SS2=0x0 */
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lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000);
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/* HEA=LCD_WIDTH-1, HSA=0x0 */
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
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/* VEA=LCD_HEIGHT-1, VSA=0x0 */
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lcd_write_reg(R_VERT_RAM_ADDR_POS, 0x9f00);
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/* Unknown registers */
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lcd_write_reg(0x00a8, 0x0125);
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lcd_write_reg(0x00a9, 0x0014);
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lcd_write_reg(0x00a7, 0x0022);
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power_on = true;
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}
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static void lcd_power_off(void)
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{
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/* Display must be off first */
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if (display_on)
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lcd_display_off();
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power_on = false;
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/** Power OFF sequence **/
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/* DSTB=0, SAP2-0=000, BT2-0=001, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0100);
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/* VCMR=1, PON=0, VRH3-0=1101 */
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lcd_write_reg(R_POWER_CONTROL3, 0x080d);
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}
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void lcd_sleep(void)
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{
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if (power_on)
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lcd_power_off();
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/* Set standby mode */
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/* PT1-0=00, SPT=0, GON=1, DTE=1, CL=0, REV=1, D1-0=10 */
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lcd_write_reg(R_DISP_CONTROL, 0x0036);
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/* DSTB=0, SAP2-0=000, BT2-0=101, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0501);
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LCD1_CONTROL &= ~0xffff0001;
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}
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#endif
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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static void lcd_display_off(void)
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{
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display_on = false;
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/** Display OFF sequence **/
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/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=1, D1-0=10 */
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lcd_write_reg(R_DISP_CONTROL, 0x1036);
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sleep(HZ/25); /* 2 or more frames */
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/* PT1-0=10, SPT=0, GON=1, DTE=0, CL=0, REV=1, D1-0=00 */
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lcd_write_reg(R_DISP_CONTROL, 0x1034);
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sleep(HZ/500); /* 1ms or more */
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/* PT1-0=10, SPT=0, GON=0, DTE=0, CL=0, REV=1, D1-0=00 */
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lcd_write_reg(R_DISP_CONTROL, 0x1004);
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sleep(HZ/25); /* 2 or more frames */
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}
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#endif
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#if defined(HAVE_LCD_ENABLE)
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static void lcd_display_on(void)
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{
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/* Be sure power is on first */
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if (!power_on)
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lcd_power_on();
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/** Display ON Sequence **/
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/* PT1-0=00, SPT=0, GON=1, DTE=0, CL=0, REV=0, D1-0=01 */
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lcd_write_reg(R_DISP_CONTROL, 0x0021);
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sleep(HZ/500); /* 1ms or more */
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/* PT1-0=00, SPT=0, GON=1, DTE=0, CL=0, REV=0, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, 0x0023);
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sleep(HZ/25); /* 2 or more frames */
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/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=x, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, invert ? 0x1033 : 0x1037);
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display_on = true;
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}
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void lcd_enable(bool on)
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{
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if (on == display_on)
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return;
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if (on)
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{
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lcd_display_on();
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/* Probably out of sync and we don't wanna pepper the code with
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lcd_update() calls for this. */
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lcd_update();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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}
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else
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{
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lcd_display_off();
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}
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}
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#endif
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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bool lcd_active(void)
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{
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return display_on;
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}
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#endif
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/*** hardware configuration ***/
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int lcd_default_contrast(void)
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{
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return DEFAULT_CONTRAST_SETTING;
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}
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void lcd_set_contrast(int val)
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{
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contrast = val & 0x7f;
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if (!display_on)
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return;
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/* VDV6-0=0000100, VCOMG=0, VCM6-0=xxxxxxx */
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lcd_write_reg(R_POWER_CONTROL4, 0x0400 | contrast);
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}
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void lcd_set_invert_display(bool yesno)
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{
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invert = yesno;
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if (!display_on)
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return;
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/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=x, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, invert ? 0x1033 : 0x1037);
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}
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/* turn the display upside down (call lcd_update() afterwards) */
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void lcd_set_flip(bool yesno)
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{
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flip = yesno;
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if (!display_on)
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return;
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/* DPL=0, EPL=1, SM=0, GS=x, SS=x, NL4-0=01100 */
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lcd_write_reg(R_DRV_OUTPUT_CONTROL, flip ? 0x090c : 0x0a0c);
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}
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void lcd_yuv_set_options(unsigned options)
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{
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lcd_yuv_options = options;
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}
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/* Performance function to blit a YUV bitmap directly to the LCD */
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void lcd_write_yuv420_lines(unsigned char const * const src[3],
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int width,
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int stride);
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void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen,
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int y_screen);
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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const unsigned char *yuv_src[3];
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const unsigned char *ysrc_max;
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int options;
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if (!display_on)
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return;
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width &= ~1;
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height &= ~1;
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/* calculate the drawing region */
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lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
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/* convert YUV coordinates to screen coordinates */
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y = LCD_WIDTH - 1 - y;
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/* 2px strip: cursor moves left, then down in gram */
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/* BGR=1, MDT1-0=00, I/D1-0=10, AM=0 */
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lcd_write_reg(R_ENTRY_MODE, 0x1020);
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yuv_src[0] = src[0] + src_y * stride + src_x;
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yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
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yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
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ysrc_max = yuv_src[0] + height * stride;
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/* cache options setting */
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options = lcd_yuv_options;
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do
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{
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/* max horiz << 8 | start horiz */
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y << 8) | (y - 1));
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/* position cursor (set AD0-AD15) */
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lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y);
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/* start drawing */
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lcd_send_command(R_WRITE_DATA_2_GRAM);
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if (options & LCD_YUV_DITHER)
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{
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lcd_write_yuv420_lines_odither(yuv_src, width, stride,
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y, x);
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}
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else
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{
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lcd_write_yuv420_lines(yuv_src, width, stride);
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}
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y -= 2; /* move strip by "down" 2 px */
|
|
yuv_src[0] += stride << 1;
|
|
yuv_src[1] += stride >> 1;
|
|
yuv_src[2] += stride >> 1;
|
|
}
|
|
while (yuv_src[0] < ysrc_max);
|
|
|
|
/* back to normal right, then down cursor in gram */
|
|
/* BGR=1, MDT1-0=00, I/D1-0=11, AM=0 */
|
|
lcd_write_reg(R_ENTRY_MODE, 0x1030);
|
|
}
|
|
|
|
/* Update the display.
|
|
This must be called after all other LCD functions that change the display. */
|
|
void lcd_update(void)
|
|
{
|
|
const fb_data *addr, *end;
|
|
|
|
if (!display_on)
|
|
return;
|
|
|
|
addr = FBADDR(0,0);
|
|
end = FBADDR(LCD_WIDTH,LCD_HEIGHT - 1);
|
|
|
|
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH - 1) << 8);
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS, (LCD_HEIGHT - 1) << 8);
|
|
lcd_write_reg(R_RAM_ADDR_SET, 0);
|
|
lcd_send_command(R_WRITE_DATA_2_GRAM);
|
|
|
|
do
|
|
{
|
|
lcd_send_pixel(*addr++);
|
|
lcd_send_pixel(*addr++);
|
|
}
|
|
while (addr < end);
|
|
}
|
|
|
|
/* Update a fraction of the display. */
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
|
{
|
|
const fb_data *addr;
|
|
|
|
if (!display_on)
|
|
return;
|
|
|
|
if (x + width > LCD_WIDTH)
|
|
width = LCD_WIDTH - x;
|
|
if (x < 0)
|
|
width += x, x = 0;
|
|
if (width <= 0)
|
|
return; /* Nothing left to do. */
|
|
|
|
if (y + height > LCD_HEIGHT)
|
|
height = LCD_HEIGHT - y;
|
|
if (y < 0)
|
|
height += y, y = 0;
|
|
if (height <= 0)
|
|
return; /* Nothing left to do. */
|
|
|
|
addr = FBADDR(x,y);
|
|
|
|
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((y + height - 1) << 8) | y);
|
|
lcd_write_reg(R_RAM_ADDR_SET, (y << 8) | x);
|
|
lcd_send_command(R_WRITE_DATA_2_GRAM);
|
|
|
|
do
|
|
{
|
|
int w = width - 1;
|
|
|
|
if (w > 0)
|
|
{
|
|
do
|
|
{
|
|
lcd_send_pixel(*addr++);
|
|
lcd_send_pixel(*addr++);
|
|
w -= 2;
|
|
}
|
|
while (w > 0);
|
|
}
|
|
|
|
if (w == 0)
|
|
lcd_send_pixel(*addr++); /* odd width */
|
|
|
|
addr += LCD_WIDTH - width;
|
|
}
|
|
while (--height > 0);
|
|
}
|