551 lines
16 KiB
C
551 lines
16 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) 2006 by Barry Wardell
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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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/** Initialized in lcd_init_device() **/
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/* Is the power turned on? */
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static bool power_on;
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/* Is the display turned on? */
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static bool display_on;
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/* Amount of vertical offset. Used for flip offset correction/detection. */
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static int y_offset;
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/* Reverse flag. Must be remembered when display is turned off. */
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static unsigned short disp_control_rev;
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/* Contrast setting << 8 */
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static int lcd_contrast;
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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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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/* register defines for the Renesas HD66773R */
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#define R_START_OSC 0x00
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#define R_DEVICE_CODE_READ 0x00
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#define R_DRV_OUTPUT_CONTROL 0x01
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#define R_DRV_AC_CONTROL 0x02
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#define R_POWER_CONTROL1 0x03
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#define R_POWER_CONTROL2 0x04
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#define R_ENTRY_MODE 0x05
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#define R_COMPARE_REG 0x06
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#define R_DISP_CONTROL 0x07
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#define R_FRAME_CYCLE_CONTROL 0x0b
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#define R_POWER_CONTROL3 0x0c
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#define R_POWER_CONTROL4 0x0d
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#define R_POWER_CONTROL5 0x0e
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#define R_GATE_SCAN_START_POS 0x0f
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#define R_VERT_SCROLL_CONTROL 0x11
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#define R_1ST_SCR_DRV_POS 0x14
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#define R_2ND_SCR_DRV_POS 0x15
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#define R_HORIZ_RAM_ADDR_POS 0x16
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#define R_VERT_RAM_ADDR_POS 0x17
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#define R_RAM_WRITE_DATA_MASK 0x20
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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_AMP_ADJ_POS 0x3a
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#define R_GAMMA_AMP_ADJ_NEG 0x3b
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static inline void lcd_wait_write(void)
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{
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while (LCD2_PORT & LCD2_BUSY_MASK);
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}
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/* Send command */
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static inline void lcd_send_cmd(unsigned v)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_CMD_MASK;
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LCD2_PORT = LCD2_CMD_MASK | v;
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}
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/* Send 16-bit data */
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static inline void lcd_send_data(unsigned v)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_DATA_MASK | (v >> 8); /* Send MSB first */
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LCD2_PORT = LCD2_DATA_MASK | (v & 0xff);
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}
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/* Send 16-bit data byte-swapped. Only needed until we can use block transfer. */
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static inline void lcd_send_data_swapped(unsigned v)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_DATA_MASK | (v & 0xff); /* Send LSB first */
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LCD2_PORT = LCD2_DATA_MASK | (v >> 8);
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}
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/* Write value to register */
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static void lcd_write_reg(int reg, int val)
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{
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lcd_send_cmd(reg);
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lcd_send_data(val);
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}
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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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/* Clamp val in range 0-14, 16-30 */
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if (val < 1)
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val = 0;
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else if (val <= 15)
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--val;
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else if (val > 30)
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val = 30;
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lcd_contrast = val << 8;
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if (!power_on)
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return;
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/* VCOMG=1, VDV4-0=xxxxx, VCM4-0=11000 */
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lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
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}
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void lcd_set_invert_display(bool yesno)
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{
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if (yesno == (disp_control_rev == 0x0000))
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return;
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disp_control_rev = yesno ? 0x0000 : 0x0004;
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if (!display_on)
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return;
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
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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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if (yesno == (y_offset != 0))
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return;
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/* The LCD controller is 132x160 while the LCD itself is 128x160, so we need
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* to shift the origin by 4 when we flip the LCD */
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y_offset = yesno ? 4 : 0;
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if (!power_on)
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return;
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/* SCN4-0=000x0 (G1/G160) */
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lcd_write_reg(R_GATE_SCAN_START_POS, yesno ? 0x0002 : 0x0000);
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/* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160) */
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lcd_write_reg(R_DRV_OUTPUT_CONTROL, yesno ? 0x0213 : 0x0113);
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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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#ifndef BOOTLOADER
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/* The OF won't boot if this is done in the bootloader - ideally we should
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tweak the lcd controller speed settings but this will do for now */
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CLCD_CLOCK_SRC |= 0xc0000000; /* Set LCD interface clock to PLL */
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#endif
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power_on = true;
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display_on = true;
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y_offset = 0;
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disp_control_rev = 0x0004;
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lcd_contrast = DEFAULT_CONTRAST_SETTING << 8;
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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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/* Be sure standby bit is clear. */
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/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0000);
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/** Power ON Sequence **/
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/* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
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lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscillation */
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/* 10ms or more for oscillation circuit to stabilize */
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sleep(HZ/50);
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/* Instruction (1) for power setting; VC2-0, VRH3-0, CAD,
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VRL3-0, VCM4-0, VDV4-0 */
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/* VC2-0=001 */
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lcd_write_reg(R_POWER_CONTROL3, 0x0001);
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/* VRL3-0=0100, PON=0, VRH3-0=0001 */
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lcd_write_reg(R_POWER_CONTROL4, 0x0401);
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/* CAD=1 */
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lcd_write_reg(R_POWER_CONTROL2, 0x8000);
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/* VCOMG=0, VDV4-0=xxxxx (19), VCM4-0=11000 */
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lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast);
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/* Instruction (2) for power setting; BT2-0, DC2-0, AP2-0 */
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/* BT2-0=000, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x002c);
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/* Instruction (3) for power setting; VCOMG = "1" */
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/* VCOMG=1, VDV4-0=xxxxx (19), VCM4-0=11000 */
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lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
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/* 40ms or more; time for step-up circuits 1,2 to stabilize */
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sleep(HZ/25);
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/* Instruction (4) for power setting; PON = "1" */
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/* VRL3-0=0100, PON=1, VRH3-0=0001 */
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lcd_write_reg(R_POWER_CONTROL4, 0x0411);
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/* 40ms or more; time for step-up circuit 4 to stabilize */
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sleep(HZ/25);
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/* Instructions for other mode settings (in register order). */
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/* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160)*/
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lcd_write_reg(R_DRV_OUTPUT_CONTROL, y_offset ? 0x0213 : 0x0113); /* different to X5 */
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/* FLD1-0=01 (1 field), B/C=1, EOR=1 (C-pat), NW5-0=000000 (1 row) */
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lcd_write_reg(R_DRV_AC_CONTROL, 0x0700);
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/* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */
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lcd_write_reg(R_ENTRY_MODE, 0x1028); /* different to X5 */
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/* CP15-0=0000000000000000 */
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lcd_write_reg(R_COMPARE_REG, 0x0000);
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/* NO1-0=01, SDT1-0=00, EQ1-0=00, DIV1-0=00, RTN3-00000 */
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lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x4000);
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/* SCN4-0=000x0 (G1/G160) */
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lcd_write_reg(R_GATE_SCAN_START_POS, y_offset ? 0x0002 : 0x0000);
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/* VL7-0=0x00 */
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lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
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/* SE17-10(End)=0x9f (159), SS17-10(Start)=0x00 */
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lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
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/* SE27-20(End)=0x5c (92), SS27-20(Start)=0x00 */
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lcd_write_reg(R_2ND_SCR_DRV_POS, 0x5c00);
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/* HEA7-0=7f, HSA7-0=00 */
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
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/* PKP12-10=0x0, PKP02-00=0x0 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003);
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/* PKP32-30=0x4, PKP22-20=0x0 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0400);
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/* PKP52-50=0x4, PKP42-40=0x7 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0407);
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/* PRP12-10=0x3, PRP02-00=0x5 */
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lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0305);
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/* PKN12-10=0x0, PKN02-00=0x3 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0003);
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/* PKN32-30=0x7, PKN22-20=0x4 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0704);
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/* PKN52-50=0x4, PRN42-40=0x7 */
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407);
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/* PRN12-10=0x5, PRN02-00=0x3 */
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lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0503);
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/* VRP14-10=0x14, VRP03-00=0x09 */
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lcd_write_reg(R_GAMMA_AMP_ADJ_POS, 0x1409);
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/* VRN14-00=0x06, VRN03-00=0x02 */
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lcd_write_reg(R_GAMMA_AMP_ADJ_NEG, 0x0602);
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/* 100ms or more; time for step-up circuits to stabilize */
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sleep(HZ/10);
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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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/* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
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/* Step-up1 halt setting bit */
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/* BT2-0=110, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x062c);
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/* Step-up3,4 halt setting bit */
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/* VRL3-0=0100, PON=0, VRH3-0=0001 */
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lcd_write_reg(R_POWER_CONTROL4, 0x0401);
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/* VCOMG=0, VDV4-0=10011, VCM4-0=11000 */
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lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast);
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/* Wait 100ms or more */
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sleep(HZ/10);
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/* Step-up2,amp halt setting bit */
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/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0000);
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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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/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
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lcd_write_reg(R_POWER_CONTROL1, 0x0001);
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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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/* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
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/* EQ1-0=00 already */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=10 */
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lcd_write_reg(R_DISP_CONTROL, 0x0032 | disp_control_rev);
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sleep(HZ/25); /* Wait 2 frames or more */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=10 */
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lcd_write_reg(R_DISP_CONTROL, 0x0022 | disp_control_rev);
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sleep(HZ/25); /* Wait 2 frames or more */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=00 */
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lcd_write_reg(R_DISP_CONTROL, 0x0000);
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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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/* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=01 */
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lcd_write_reg(R_DISP_CONTROL, 0x0001);
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sleep(HZ/25); /* Wait 2 frames or more */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=01 */
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lcd_write_reg(R_DISP_CONTROL, 0x0021 | disp_control_rev);
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, 0x0023 | disp_control_rev);
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sleep(HZ/25); /* Wait 2 frames or more */
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/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
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lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
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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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/*** update functions ***/
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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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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern 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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extern 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, /* To align dither pattern */
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int y_screen);
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/* Performance function to blit a YUV bitmap directly to the LCD */
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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 y0;
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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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/* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin
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* is actually the bottom left and horizontal and vertical are swapped.
|
|
* Rockbox expects the origin to be the top left so we need to use
|
|
* 127 - y instead of just y */
|
|
|
|
/* max vert << 8 | start vert */
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
|
|
|
|
y0 = LCD_HEIGHT - 1 - y + y_offset;
|
|
|
|
/* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=0, LG2-0=000 */
|
|
lcd_write_reg(R_ENTRY_MODE, 0x1020);
|
|
|
|
yuv_src[0] = src[0] + src_y * stride + src_x;
|
|
yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
|
|
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
|
|
ysrc_max = yuv_src[0] + height * stride;
|
|
|
|
options = lcd_yuv_options;
|
|
|
|
do
|
|
{
|
|
/* max horiz << 8 | start horiz */
|
|
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y0 << 8) | (y0 - 1));
|
|
|
|
/* position cursor (set AD0-AD15) */
|
|
/* start vert << 8 | start horiz */
|
|
lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y0);
|
|
|
|
/* start drawing */
|
|
lcd_send_cmd(R_WRITE_DATA_2_GRAM);
|
|
|
|
if (options & LCD_YUV_DITHER)
|
|
{
|
|
lcd_write_yuv420_lines_odither(yuv_src, width, stride,
|
|
x, y);
|
|
y -= 2;
|
|
}
|
|
else
|
|
{
|
|
lcd_write_yuv420_lines(yuv_src, width, stride);
|
|
}
|
|
|
|
y0 -= 2;
|
|
yuv_src[0] += stride << 1;
|
|
yuv_src[1] += stride >> 1;
|
|
yuv_src[2] += stride >> 1;
|
|
}
|
|
while (yuv_src[0] < ysrc_max);
|
|
|
|
/* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */
|
|
lcd_write_reg(R_ENTRY_MODE, 0x1028);
|
|
}
|
|
|
|
|
|
/* Update a fraction of the display. */
|
|
void lcd_update_rect(int x0, int y0, int width, int height)
|
|
{
|
|
int x1, y1;
|
|
unsigned short *addr;
|
|
|
|
if (!display_on)
|
|
return;
|
|
|
|
/* calculate the drawing region */
|
|
y1 = (y0 + height) - 1; /* max vert */
|
|
x1 = (x0 + width) - 1; /* max horiz */
|
|
|
|
if(x1 >= LCD_WIDTH)
|
|
x1 = LCD_WIDTH - 1;
|
|
if (x1 <= 0)
|
|
return; /* nothing left to do, 0 is harmful to lcd_write_data() */
|
|
if(y1 >= LCD_HEIGHT)
|
|
y1 = LCD_HEIGHT-1;
|
|
|
|
/* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin
|
|
* is actually the bottom left and horizontal and vertical are swapped.
|
|
* Rockbox expects the origin to be the top left so we need to use
|
|
* 127 - y instead of just y */
|
|
|
|
/* max horiz << 8 | start horiz */
|
|
lcd_send_cmd(R_HORIZ_RAM_ADDR_POS);
|
|
lcd_send_data( (((LCD_HEIGHT-1)-y0+y_offset) << 8) | ((LCD_HEIGHT-1)-y1+y_offset) );
|
|
|
|
/* max vert << 8 | start vert */
|
|
lcd_send_cmd(R_VERT_RAM_ADDR_POS);
|
|
lcd_send_data((x1 << 8) | x0);
|
|
|
|
/* position cursor (set AD0-AD15) */
|
|
/* start vert << 8 | start horiz */
|
|
lcd_send_cmd(R_RAM_ADDR_SET);
|
|
lcd_send_data( (x0 << 8) | ((LCD_HEIGHT-1)-y0+y_offset) );
|
|
|
|
/* start drawing */
|
|
lcd_send_cmd(R_WRITE_DATA_2_GRAM);
|
|
|
|
addr = (unsigned short*)FBADDR(x0,y0);
|
|
|
|
int c, r;
|
|
|
|
/* for each row */
|
|
for (r = 0; r < height; r++) {
|
|
/* for each column */
|
|
for (c = 0; c < width; c++) {
|
|
/* output 1 pixel */
|
|
lcd_send_data_swapped(*addr++);
|
|
}
|
|
|
|
addr += LCD_WIDTH - width;
|
|
}
|
|
}
|
|
|
|
/* Update the display.
|
|
This must be called after all other LCD functions that change the display. */
|
|
void lcd_update(void)
|
|
{
|
|
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
|
|
}
|