Unify I2C driver for all PortalPlayer targets
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12126 a1c6a512-1295-4272-9138-f99709370657
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@ -254,10 +254,8 @@ common/strlen.c
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#ifndef SIMULATOR
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target/arm/memset-arm.S
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target/arm/memset16-arm.S
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#if CONFIG_I2C == I2C_PP5020
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target/arm/i2c-pp5020.c
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#elif CONFIG_I2C == I2C_PP5002
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target/arm/i2c-pp5002.c
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#if CONFIG_I2C == I2C_PP5020 || CONFIG_I2C == I2C_PP5002
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target/arm/i2c-pp.c
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#elif CONFIG_I2C == I2C_PNX0101
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drivers/i2c-pnx0101.c
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#elif CONFIG_I2C == I2C_S3C2440
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@ -7,7 +7,7 @@
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* PP5020 I2C driver
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* PP502X and PP5002 I2C driver
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*
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* Based on code from the ipodlinux project - http://ipodlinux.org/
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* Adapted for Rockbox in November 2005
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@ -28,7 +28,11 @@
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#include "kernel.h"
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#include "logf.h"
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#include "system.h"
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#if CONFIG_I2C == I2C_PP5002
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#include "i2c-pp5002.h"
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#else
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#include "i2c-pp5020.h"
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#endif
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/* Local functions definitions */
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@ -185,12 +189,18 @@ void i2c_init(void)
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GPIOC_ENABLE &= ~0x20;
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#endif
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#if CONFIG_I2C == I2C_PP5002
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DEV_EN |= 0x2;
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#else
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DEV_EN |= DEV_I2C; /* Enable I2C */
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#endif
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DEV_RS |= DEV_I2C; /* Start I2C Reset */
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DEV_RS &=~DEV_I2C; /* End I2C Reset */
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#if CONFIG_I2C == I2C_PP5020
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outl(0x0, 0x600060a4);
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outl(0x80 | (0 << 8), 0x600060a4);
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#endif
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mutex_init(&i2c_mutex);
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@ -1,157 +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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* PP5002 I2C driver
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*
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* Based on code from the ipodlinux project - http://ipodlinux.org/
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* Adapted for Rockbox in January 2006
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*
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* Original file: linux/arch/armnommu/mach-ipod/hardware.c
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*
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* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "kernel.h"
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#include "logf.h"
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#include "system.h"
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#include "i2c-pp5002.h"
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/* Local functions definitions */
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#define POLL_TIMEOUT (HZ)
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static int pp_i2c_wait_not_busy(void)
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{
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unsigned long timeout;
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timeout = current_tick + POLL_TIMEOUT;
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while (TIME_BEFORE(current_tick, timeout)) {
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if (!(I2C_STATUS & I2C_BUSY)) {
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return 0;
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}
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yield();
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}
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return -1;
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}
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/* Public functions */
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int pp_i2c_read_byte(unsigned int addr, unsigned int *data)
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{
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if (pp_i2c_wait_not_busy() < 0)
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{
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return -1;
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}
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/* clear top 15 bits, left shift 1, or in 0x1 for a read */
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I2C_ADDR = ((addr << 17) >> 16) | 0x1 ;
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I2C_CTRL |= 0x20;
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I2C_CTRL |= I2C_SEND;
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if (pp_i2c_wait_not_busy() < 0)
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{
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return -1;
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}
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if (data)
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{
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*data = I2C_DATA(0);
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}
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return 0;
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}
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int pp_i2c_send_bytes(unsigned int addr, unsigned int len, unsigned char *data)
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{
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unsigned int i;
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if (len < 1 || len > 4)
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{
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return -1;
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}
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if (pp_i2c_wait_not_busy() < 0)
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{
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return -2;
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}
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/* clear top 15 bits, left shift 1 */
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I2C_ADDR = (addr << 17) >> 16;
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I2C_CTRL &= ~0x20;
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for ( i = 0; i < len; i++ )
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{
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I2C_DATA(i) = *data++;
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}
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I2C_CTRL = (I2C_CTRL & ~0x26) | ((len-1) << 1);
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I2C_CTRL |= I2C_SEND;
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return 0x0;
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}
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int pp_i2c_send_byte(unsigned int addr, int data0)
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{
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unsigned char data[1];
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data[0] = data0;
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return pp_i2c_send_bytes(addr, 1, data);
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}
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int i2c_readbytes(unsigned int dev_addr, int addr, int len, unsigned char *data) {
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unsigned int temp;
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int i;
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pp_i2c_send_byte(dev_addr, addr);
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for (i = 0; i < len; i++) {
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pp_i2c_read_byte(dev_addr, &temp);
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data[i] = temp;
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}
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return i;
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}
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int i2c_readbyte(unsigned int dev_addr, int addr)
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{
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int data;
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pp_i2c_send_byte(dev_addr, addr);
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pp_i2c_read_byte(dev_addr, &data);
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return data;
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}
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int pp_i2c_send(unsigned int addr, int data0, int data1)
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{
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unsigned char data[2];
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data[0] = data0;
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data[1] = data1;
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return pp_i2c_send_bytes(addr, 2, data);
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}
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void i2c_init(void)
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{
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DEV_EN |= 0x2; /* Enable I2C-should this be DEV_I2C rather than 0x2? */
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DEV_RS |= DEV_I2C; /* Start I2C Reset */
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DEV_RS &=~DEV_I2C; /* End I2C Reset */
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}
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