mirror of
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Many more drivers for mini2440. Now the main binary compiles and runs.
Flyspray: FS#10725 Author: Bob Cousins git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23362 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dominik Wenger
parent
6d20102a9c
commit
90b576f55e
19 changed files with 1215 additions and 92 deletions
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@ -1,140 +0,0 @@
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/***************************************************************************
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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 Wade Brown
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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 "cpu.h"
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#include "system.h"
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#include "adc.h"
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#include "adc-target.h"
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#include "kernel.h"
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static unsigned short adc_readings[NUM_ADC_CHANNELS];
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/* prototypes */
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static unsigned short __adc_read(int channel);
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static void adc_tick(void);
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void adc_init(void)
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{
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int i;
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/* Turn on the ADC PCLK */
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s3c_regset32(&CLKCON, 1<<15);
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/* Set channel 0, normal mode, disable "start by read" */
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ADCCON &= ~(0x3F);
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/* No start delay. Use normal conversion mode. */
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ADCDLY = 0x1;
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/* Set and enable the prescaler */
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ADCCON = (ADCCON & ~(0xff<<6)) | (0x19<<6);
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ADCCON |= (1<<14);
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/* prefill the adc channels */
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for (i = 0; i < NUM_ADC_CHANNELS; i++)
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{
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adc_readings[i] = __adc_read(i);
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}
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/* start at zero so when the tick starts it is at zero */
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adc_readings[0] = __adc_read(0);
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/* attach the adc reading to the tick */
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tick_add_task(adc_tick);
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}
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/* Called to get the recent ADC reading */
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inline unsigned short adc_read(int channel)
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{
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return adc_readings[channel];
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}
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/**
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* Read the ADC by polling
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* @param channel The ADC channel to read
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* @return 10bit reading from ADC channel or ADC_READ_ERROR if timeout
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*/
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static unsigned short __adc_read(int channel)
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{
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int i;
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/* Set the channel */
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ADCCON = (ADCCON & ~(0x7<<3)) | (channel<<3);
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/* Start the conversion process */
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ADCCON |= 0x1;
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/* Wait for a low Enable_start */
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for (i = 20000;;)
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{
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if(0 == (ADCCON & 0x1))
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{
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break;
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}
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else
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{
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i--;
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if (0 == i)
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{
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/* Ran out of time */
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return ADC_READ_ERROR;
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}
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}
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}
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/* Wait for high End_of_Conversion */
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for(i = 20000;;)
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{
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if(ADCCON & (1<<15))
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{
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break;
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}
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else
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{
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i--;
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if(0 == i)
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{
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/* Ran out of time */
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return ADC_READ_ERROR;
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}
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}
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}
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return (ADCDAT0 & 0x3ff);
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}
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/* add this to the tick so that the ADC converts are done in the background */
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static void adc_tick(void)
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{
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static unsigned channel;
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/* Check if the End Of Conversion is set */
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if (ADCCON & (1<<15))
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{
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adc_readings[channel] = (ADCDAT0 & 0x3FF);
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if (++channel >= NUM_ADC_CHANNELS)
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{
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channel = 0;
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}
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/* setup the next conversion and start it*/
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ADCCON = (ADCCON & ~(0x7<<3)) | (channel<<3) | 0x01;
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}
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}
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@ -1,144 +0,0 @@
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/***************************************************************************
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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) 2007 by Michael Sevakis
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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 "system.h"
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#include "i2c-meg-fx.h"
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static struct wakeup i2c_wake; /* Transfer completion signal */
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static struct mutex i2c_mtx; /* Mutual exclusion */
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static unsigned char *buf_ptr; /* Next byte to transfer */
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static int buf_count; /* Number of bytes remaining to transfer */
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static void i2c_stop(void)
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{
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/* Generate STOP */
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IICSTAT = I2C_MODE_MASTER | I2C_MODE_TX | I2C_RXTX_ENB;
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/* No more interrupts, clear pending interrupt to continue */
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IICCON &= ~(I2C_TXRX_INTPND | I2C_TXRX_INTENB);
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}
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void i2c_write(int addr, const unsigned char *buf, int count)
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{
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if (count <= 0)
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return;
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mutex_lock(&i2c_mtx);
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/* Turn on I2C clock */
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s3c_regset32(&CLKCON, 1 << 16);
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/* Set mode to master transmitter and enable lines */
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IICSTAT = I2C_MODE_MASTER | I2C_MODE_TX | I2C_RXTX_ENB;
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/* Set buffer start and count */
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buf_ptr = (unsigned char *)buf;
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buf_count = count;
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/* Send slave address and then data */
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SRCPND = IIC_MASK;
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INTPND = IIC_MASK;
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IICCON |= I2C_TXRX_INTENB;
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/* Load slave address into shift register */
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IICDS = addr & 0xfe;
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/* Generate START */
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IICSTAT = I2C_MODE_MASTER | I2C_MODE_TX | I2C_START | I2C_RXTX_ENB;
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if (wakeup_wait(&i2c_wake, HZ) != OBJ_WAIT_SUCCEEDED)
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{
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/* Something went wrong - stop transmission */
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int oldlevel = disable_irq_save();
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i2c_stop();
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restore_irq(oldlevel);
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}
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/* Go back to slave receive mode and disable lines */
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IICSTAT = 0;
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/* Turn off I2C clock */
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s3c_regclr32(&CLKCON, 1 << 16);
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mutex_unlock(&i2c_mtx);
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}
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void i2c_init(void)
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{
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/* Init kernel objects */
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wakeup_init(&i2c_wake);
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mutex_init(&i2c_mtx);
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/* Clear pending source */
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SRCPND = IIC_MASK;
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INTPND = IIC_MASK;
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/* Enable i2c interrupt in controller */
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s3c_regclr32(&INTMOD, IIC_MASK);
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s3c_regclr32(&INTMSK, IIC_MASK);
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/* Turn on I2C clock */
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s3c_regset32(&CLKCON, 1 << 16);
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/* Set GPE15 (IICSDA) and GPE14 (IICSCL) to IIC */
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GPECON = (GPECON & ~((3 << 30) | (3 << 28))) |
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((2 << 30) | (2 << 28));
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/* Bus ACK, IICCLK: fPCLK / 16, Rx/Tx Int: Disable, Tx clock: IICCLK/8 */
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/* OF PCLK: 49.1568MHz / 16 / 8 = 384.0375 kHz */
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IICCON = (7 << 0);
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/* SDA line delayed 0 PCLKs */
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IICLC = (0 << 0);
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/* Turn off I2C clock */
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s3c_regclr32(&CLKCON, 1 << 16);
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}
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void IIC(void)
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{
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for (;;)
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{
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/* If ack was received from last byte and bytes are remaining */
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if (--buf_count >= 0 && (IICSTAT & I2C_ACK_L) == 0)
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{
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/* Write next byte to shift register */
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IICDS = *buf_ptr++;
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/* Clear pending interrupt to continue */
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IICCON &= ~I2C_TXRX_INTPND;
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break;
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}
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/* Finished */
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/* Generate STOP */
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i2c_stop();
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/* Signal thread */
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wakeup_signal(&i2c_wake);
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break;
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}
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/* Ack */
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SRCPND = IIC_MASK;
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INTPND = IIC_MASK;
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}
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@ -1,46 +0,0 @@
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/***************************************************************************
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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) 2007 by Michael Sevakis
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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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/* chip-specific i2c functions */
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/* IICCON */
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#define I2C_ACKGEN (1 << 7)
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#define I2C_TXCLK_512 (1 << 6)
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#define I2C_TXRX_INTENB (1 << 5)
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#define I2C_TXRX_INTPND (1 << 4)
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/* IICSTAT */
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#define I2C_MODE_MASTER (2 << 6)
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#define I2C_MODE_TX (1 << 6)
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#define I2C_BUSY (1 << 5)
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#define I2C_START (1 << 5)
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#define I2C_RXTX_ENB (1 << 4)
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#define I2C_BUS_ARB_FAILED (1 << 3)
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#define I2C_S_ADDR_STAT (1 << 2)
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#define I2C_S_ADDR_MATCH (1 << 1)
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#define I2C_ACK_L (1 << 0)
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/* IICLC */
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#define I2C_FLT_ENB (1 << 2)
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void i2c_init(void);
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void i2c_write(int addr, const unsigned char *data, int count);
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@ -28,7 +28,7 @@
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#include "cpu.h"
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#include "kernel.h"
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#include "sound.h"
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#include "i2c-meg-fx.h"
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#include "i2c-s3c2440.h"
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#include "system-target.h"
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#include "timer.h"
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#include "wmcodec.h"
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