448 lines
12 KiB
C
448 lines
12 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 by Dave Chapman
|
||
|
|
*
|
||
|
|
* LCD driver for the Sansa Fuze - controller unknown
|
||
|
|
*
|
||
|
|
* 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 "cpu.h"
|
||
|
|
#include "lcd.h"
|
||
|
|
#include "file.h"
|
||
|
|
#include "debug.h"
|
||
|
|
#include "system.h"
|
||
|
|
#include "clock-target.h"
|
||
|
|
#include "dbop-as3525.h"
|
||
|
|
|
||
|
|
/* The controller is unknown, but some registers appear to be the same as the
|
||
|
|
HD66789R */
|
||
|
|
static bool display_on = false; /* is the display turned on? */
|
||
|
|
|
||
|
|
/* register defines */
|
||
|
|
#define R_START_OSC 0x00
|
||
|
|
#define R_DRV_OUTPUT_CONTROL 0x01
|
||
|
|
#define R_DRV_WAVEFORM_CONTROL 0x02
|
||
|
|
#define R_ENTRY_MODE 0x03
|
||
|
|
#define R_COMPARE_REG1 0x04
|
||
|
|
#define R_COMPARE_REG2 0x05
|
||
|
|
|
||
|
|
#define R_DISP_CONTROL1 0x07
|
||
|
|
#define R_DISP_CONTROL2 0x08
|
||
|
|
#define R_DISP_CONTROL3 0x09
|
||
|
|
|
||
|
|
#define R_FRAME_CYCLE_CONTROL 0x0b
|
||
|
|
#define R_EXT_DISP_IF_CONTROL 0x0c
|
||
|
|
|
||
|
|
#define R_POWER_CONTROL1 0x10
|
||
|
|
#define R_POWER_CONTROL2 0x11
|
||
|
|
#define R_POWER_CONTROL3 0x12
|
||
|
|
#define R_POWER_CONTROL4 0x13
|
||
|
|
|
||
|
|
#define R_RAM_ADDR_SET 0x21
|
||
|
|
#define R_WRITE_DATA_2_GRAM 0x22
|
||
|
|
|
||
|
|
#define R_GAMMA_FINE_ADJ_POS1 0x30
|
||
|
|
#define R_GAMMA_FINE_ADJ_POS2 0x31
|
||
|
|
#define R_GAMMA_FINE_ADJ_POS3 0x32
|
||
|
|
#define R_GAMMA_GRAD_ADJ_POS 0x33
|
||
|
|
|
||
|
|
#define R_GAMMA_FINE_ADJ_NEG1 0x34
|
||
|
|
#define R_GAMMA_FINE_ADJ_NEG2 0x35
|
||
|
|
#define R_GAMMA_FINE_ADJ_NEG3 0x36
|
||
|
|
#define R_GAMMA_GRAD_ADJ_NEG 0x37
|
||
|
|
|
||
|
|
#define R_GAMMA_AMP_ADJ_RES_POS 0x38
|
||
|
|
#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
|
||
|
|
|
||
|
|
#define R_GATE_SCAN_POS 0x40
|
||
|
|
#define R_VERT_SCROLL_CONTROL 0x41
|
||
|
|
#define R_1ST_SCR_DRV_POS 0x42
|
||
|
|
#define R_2ND_SCR_DRV_POS 0x43
|
||
|
|
#define R_HORIZ_RAM_ADDR_POS 0x44
|
||
|
|
#define R_VERT_RAM_ADDR_POS 0x45
|
||
|
|
|
||
|
|
/* Flip Flag */
|
||
|
|
#define R_ENTRY_MODE_HORZ_NORMAL 0x7030
|
||
|
|
#define R_ENTRY_MODE_HORZ_FLIPPED 0x7000
|
||
|
|
static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL;
|
||
|
|
#define R_ENTRY_MODE_VERT 0x7038
|
||
|
|
#define R_ENTRY_MODE_SOLID_VERT 0x1038
|
||
|
|
/* FIXME */
|
||
|
|
#define R_ENTRY_MODE_VIDEO_NORMAL 0x7038
|
||
|
|
#define R_ENTRY_MODE_VIDEO_FLIPPED 0x7018
|
||
|
|
|
||
|
|
/* Reverse Flag */
|
||
|
|
#define R_DISP_CONTROL_NORMAL 0x0004
|
||
|
|
#define R_DISP_CONTROL_REV 0x0000
|
||
|
|
static unsigned short r_disp_control_rev = R_DISP_CONTROL_NORMAL;
|
||
|
|
|
||
|
|
static const int xoffset = 20;
|
||
|
|
|
||
|
|
static inline void lcd_delay(int x)
|
||
|
|
{
|
||
|
|
do {
|
||
|
|
asm volatile ("nop\n");
|
||
|
|
} while (x--);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void as3525_dbop_init(void)
|
||
|
|
{
|
||
|
|
CGU_DBOP = (1<<3) | AS3525_DBOP_DIV;
|
||
|
|
|
||
|
|
DBOP_TIMPOL_01 = 0xe167e167;
|
||
|
|
DBOP_TIMPOL_23 = 0xe167006e;
|
||
|
|
|
||
|
|
/* short count: 16 | output data width: 16 | readstrobe line */
|
||
|
|
DBOP_CTRL = (1<<18|1<<12|1<<3);
|
||
|
|
|
||
|
|
GPIOB_AFSEL = 0xfc;
|
||
|
|
GPIOC_AFSEL = 0xff;
|
||
|
|
|
||
|
|
DBOP_TIMPOL_23 = 0x6000e;
|
||
|
|
|
||
|
|
/* short count: 16|enable write|output data width: 16|read strobe line */
|
||
|
|
DBOP_CTRL = (1<<18|1<<16|1<<12|1<<3);
|
||
|
|
DBOP_TIMPOL_01 = 0x6e167;
|
||
|
|
DBOP_TIMPOL_23 = 0xa167e06f;
|
||
|
|
|
||
|
|
/* TODO: The OF calls some other functions here, but maybe not important */
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcd_write_cmd(short cmd)
|
||
|
|
{
|
||
|
|
/* Write register */
|
||
|
|
DBOP_TIMPOL_23 = 0xa167006e;
|
||
|
|
dbop_write_data(&cmd, 1);
|
||
|
|
|
||
|
|
lcd_delay(4);
|
||
|
|
|
||
|
|
DBOP_TIMPOL_23 = 0xa167e06f;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcd_write_reg(int reg, int value)
|
||
|
|
{
|
||
|
|
int16_t data = value;
|
||
|
|
|
||
|
|
lcd_write_cmd(reg);
|
||
|
|
dbop_write_data(&data, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*** hardware configuration ***/
|
||
|
|
|
||
|
|
void lcd_set_contrast(int val)
|
||
|
|
{
|
||
|
|
(void)val;
|
||
|
|
}
|
||
|
|
|
||
|
|
void lcd_set_invert_display(bool yesno)
|
||
|
|
{
|
||
|
|
r_disp_control_rev = yesno ? R_DISP_CONTROL_REV :
|
||
|
|
R_DISP_CONTROL_NORMAL;
|
||
|
|
|
||
|
|
if (display_on)
|
||
|
|
{
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x0013 | r_disp_control_rev);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef HAVE_LCD_FLIP
|
||
|
|
static bool display_flipped = false;
|
||
|
|
|
||
|
|
/* turn the display upside down */
|
||
|
|
void lcd_set_flip(bool yesno)
|
||
|
|
{
|
||
|
|
display_flipped = yesno;
|
||
|
|
|
||
|
|
r_entry_mode = yesno ? R_ENTRY_MODE_HORZ_FLIPPED :
|
||
|
|
R_ENTRY_MODE_HORZ_NORMAL;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static void _display_on(void)
|
||
|
|
{
|
||
|
|
/* Initialise in the same way as the original firmare */
|
||
|
|
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0);
|
||
|
|
|
||
|
|
lcd_write_reg(R_POWER_CONTROL2, 0x3704);
|
||
|
|
lcd_write_reg(0x14, 0x1a1b);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL1, 0x3860);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0x40);
|
||
|
|
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0x60);
|
||
|
|
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0x70);
|
||
|
|
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 277);
|
||
|
|
lcd_write_reg(R_DRV_WAVEFORM_CONTROL, (7<<8));
|
||
|
|
lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
|
||
|
|
lcd_write_reg(R_DISP_CONTROL2, 0x01);
|
||
|
|
lcd_write_reg(R_FRAME_CYCLE_CONTROL, (1<<10));
|
||
|
|
lcd_write_reg(R_EXT_DISP_IF_CONTROL, 0);
|
||
|
|
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x40);
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0687);
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0306);
|
||
|
|
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x104);
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0585);
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 255+66);
|
||
|
|
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0687+128);
|
||
|
|
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 259);
|
||
|
|
lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0);
|
||
|
|
lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0);
|
||
|
|
|
||
|
|
lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_WIDTH - 1));
|
||
|
|
lcd_write_reg(R_2ND_SCR_DRV_POS, 0);
|
||
|
|
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH - 1));
|
||
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS, 0);
|
||
|
|
lcd_write_reg(0x46, (((LCD_WIDTH - 1) + xoffset) << 8) | xoffset);
|
||
|
|
lcd_write_reg(0x47, (LCD_HEIGHT - 1));
|
||
|
|
lcd_write_reg(0x48, 0x0);
|
||
|
|
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x11);
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x13 | r_disp_control_rev);
|
||
|
|
|
||
|
|
display_on = true; /* must be done before calling lcd_update() */
|
||
|
|
lcd_update();
|
||
|
|
}
|
||
|
|
|
||
|
|
void lcd_init_device(void)
|
||
|
|
{
|
||
|
|
as3525_dbop_init();
|
||
|
|
|
||
|
|
GPIOA_DIR |= (1<<5|1<<4|1<<3);
|
||
|
|
GPIOA_PIN(5) = 0;
|
||
|
|
GPIOA_PIN(3) = (1<<3);
|
||
|
|
GPIOA_PIN(4) = 0;
|
||
|
|
GPIOA_PIN(5) = (1<<5);
|
||
|
|
|
||
|
|
_display_on();
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(HAVE_LCD_ENABLE)
|
||
|
|
void lcd_enable(bool on)
|
||
|
|
{
|
||
|
|
if (display_on == on)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if(on)
|
||
|
|
{
|
||
|
|
lcd_write_reg(R_START_OSC, 1);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL1, 0);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL2, 0x3704);
|
||
|
|
lcd_write_reg(0x14, 0x1a1b);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL1, 0x3860);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0x40);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 0x60);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL4, 112);
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x11);
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x13 | r_disp_control_rev);
|
||
|
|
display_on = true;
|
||
|
|
lcd_update(); /* Resync display */
|
||
|
|
send_event(LCD_EVENT_ACTIVATION, NULL);
|
||
|
|
sleep(0);
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0x22);
|
||
|
|
lcd_write_reg(R_DISP_CONTROL1, 0);
|
||
|
|
lcd_write_reg(R_POWER_CONTROL1, 1);
|
||
|
|
display_on = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
|
||
|
|
bool lcd_active(void)
|
||
|
|
{
|
||
|
|
return display_on;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*** update functions ***/
|
||
|
|
|
||
|
|
/* FIXME : find the datasheet for this RENESAS controller so we identify the
|
||
|
|
* registers used in windowing code (not present in HD66789R) */
|
||
|
|
|
||
|
|
/* Set horizontal window addresses */
|
||
|
|
static void lcd_window_x(int xmin, int xmax)
|
||
|
|
{
|
||
|
|
xmin += xoffset;
|
||
|
|
xmax += xoffset;
|
||
|
|
lcd_write_reg(R_HORIZ_RAM_ADDR_POS + 2, (xmax << 8) | xmin);
|
||
|
|
lcd_write_reg(R_RAM_ADDR_SET - 1, xmin);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set vertical window addresses */
|
||
|
|
static void lcd_window_y(int ymin, int ymax)
|
||
|
|
{
|
||
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS + 2, ymax);
|
||
|
|
lcd_write_reg(R_VERT_RAM_ADDR_POS + 3, ymin);
|
||
|
|
lcd_write_reg(R_RAM_ADDR_SET, ymin);
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned lcd_yuv_options = 0;
|
||
|
|
|
||
|
|
void lcd_yuv_set_options(unsigned options)
|
||
|
|
{
|
||
|
|
lcd_yuv_options = options;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
|
||
|
|
extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
|
||
|
|
int width,
|
||
|
|
int stride);
|
||
|
|
extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
|
||
|
|
int width,
|
||
|
|
int stride,
|
||
|
|
int x_screen, /* To align dither pattern */
|
||
|
|
int y_screen);
|
||
|
|
|
||
|
|
/* Performance function to blit a YUV bitmap directly to the LCD
|
||
|
|
* src_x, src_y, width and height should be even
|
||
|
|
* x, y, width and height have to be within LCD bounds
|
||
|
|
*/
|
||
|
|
void lcd_blit_yuv(unsigned char * const src[3],
|
||
|
|
int src_x, int src_y, int stride,
|
||
|
|
int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
unsigned char const * yuv_src[3];
|
||
|
|
off_t z;
|
||
|
|
|
||
|
|
/* Sorry, but width and height must be >= 2 or else */
|
||
|
|
width &= ~1;
|
||
|
|
height >>= 1;
|
||
|
|
|
||
|
|
z = stride*src_y;
|
||
|
|
yuv_src[0] = src[0] + z + src_x;
|
||
|
|
yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
|
||
|
|
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
|
||
|
|
|
||
|
|
#ifdef HAVE_LCD_FLIP
|
||
|
|
lcd_write_reg(R_ENTRY_MODE,
|
||
|
|
display_flipped ? R_ENTRY_MODE_VIDEO_FLIPPED : R_ENTRY_MODE_VIDEO_NORMAL
|
||
|
|
);
|
||
|
|
#else
|
||
|
|
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO_NORMAL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
lcd_window_x(x, x + width - 1);
|
||
|
|
|
||
|
|
if (lcd_yuv_options & LCD_YUV_DITHER)
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
lcd_window_y(y, y + 1);
|
||
|
|
|
||
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||
|
|
|
||
|
|
lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
|
||
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
||
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
||
|
|
yuv_src[2] += stride >> 1;
|
||
|
|
y += 2;
|
||
|
|
}
|
||
|
|
while (--height > 0);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
lcd_window_y(y, y + 1);
|
||
|
|
|
||
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||
|
|
|
||
|
|
lcd_write_yuv420_lines(yuv_src, width, stride);
|
||
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
||
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
||
|
|
yuv_src[2] += stride >> 1;
|
||
|
|
y += 2;
|
||
|
|
}
|
||
|
|
while (--height > 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Update the display.
|
||
|
|
This must be called after all other LCD functions that change the display. */
|
||
|
|
void lcd_update(void)
|
||
|
|
{
|
||
|
|
if (!display_on)
|
||
|
|
return;
|
||
|
|
|
||
|
|
lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
|
||
|
|
|
||
|
|
lcd_window_x(0, LCD_WIDTH - 1);
|
||
|
|
lcd_window_y(0, LCD_HEIGHT - 1);
|
||
|
|
|
||
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||
|
|
|
||
|
|
dbop_write_data((fb_data*)lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Update a fraction of the display. */
|
||
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
const fb_data *ptr;
|
||
|
|
|
||
|
|
if (!display_on)
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* nothing to draw? */
|
||
|
|
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) ||
|
||
|
|
(y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0))
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (x < 0)
|
||
|
|
{ /* clip left */
|
||
|
|
width += x;
|
||
|
|
x = 0;
|
||
|
|
}
|
||
|
|
if (y < 0)
|
||
|
|
{ /* clip top */
|
||
|
|
height += y;
|
||
|
|
y = 0;
|
||
|
|
}
|
||
|
|
if (x + width > LCD_WIDTH)
|
||
|
|
width = LCD_WIDTH - x; /* clip right */
|
||
|
|
if (y + height > LCD_HEIGHT)
|
||
|
|
height = LCD_HEIGHT - y; /* clip bottom */
|
||
|
|
|
||
|
|
lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
|
||
|
|
|
||
|
|
/* we need to make x and width even to enable 32bit transfers */
|
||
|
|
width = (width + (x & 1) + 1) & ~1;
|
||
|
|
x &= ~1;
|
||
|
|
|
||
|
|
lcd_window_x(x, x + width - 1);
|
||
|
|
lcd_window_y(y, y + height -1);
|
||
|
|
|
||
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
||
|
|
|
||
|
|
ptr = &lcd_framebuffer[y][x];
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
dbop_write_data(ptr, width);
|
||
|
|
ptr += LCD_WIDTH;
|
||
|
|
}
|
||
|
|
while (--height > 0);
|
||
|
|
}
|