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Initial framework for the Sandisk Sansa Clip Zip

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30365 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2011-08-27 16:21:19 +00:00
parent 3aeb7fad9a
commit 463b3ed8b2
18 changed files with 603 additions and 12 deletions
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103
firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 François Dinel
* Copyright (C) 2008-2009 Rafaël Carré
*
* 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 "lcd.h"
#include "lcd-clip.h"
#include "system.h"
#include "cpu.h"
static int display_type;
int lcd_hw_init(void)
{
bitset32(&CGU_PERI, CGU_SSP_CLOCK_ENABLE);
SSP_CPSR = AS3525_SSP_PRESCALER; /* OF = 0x10 */
SSP_CR0 = (1<<7) | (1<<6) | 7; /* Motorola SPI frame format, 8 bits */
SSP_CR1 = (1<<3) | (1<<1); /* SSP Operation enabled */
SSP_IMSC = 0; /* No interrupts */
/* configure GPIO B2 (display D/C#) as output */
GPIOB_DIR |= (1<<2);
/* configure GPIO B3 (display type detect) as input */
GPIOB_DIR &= ~(1<<3);
/* set GPIO A5 (display RESET# ?) */
GPIOA_DIR |= (1<<5);
GPIOA_PIN(5) = (1<<5);
/* detect display type on GPIO B3 */
return GPIOB_PIN(3) ? 1 : 0;
}
void lcd_write_command(int byte)
{
while(SSP_SR & (1<<4)) /* BSY flag */
;
/* LCD command mode */
GPIOB_PIN(2) = 0;
SSP_DATA = byte;
while(SSP_SR & (1<<4)) /* BSY flag */
;
}
void lcd_write_data(const fb_data* p_bytes, int count)
{
/* LCD data mode */
GPIOB_PIN(2) = (1<<2);
while (count--)
{
while(!(SSP_SR & (1<<1))) /* wait until transmit FIFO is not full */
;
SSP_DATA = *p_bytes++;
}
}
void lcd_update(void)
{
/* TODO */
}
void lcd_init_device(void)
{
/* TODO */
display_type = lcd_hw_init();
}
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
(void) x;
(void) y;
(void) width;
(void) height;
/* TODO not implemented yet, do a full update instead */
lcd_update();
}