From 0d8111cb399cf9db7a25d4a5ddc867a22de1a5bc Mon Sep 17 00:00:00 2001 From: Barry Wardell Date: Sat, 10 Nov 2007 19:14:01 +0000 Subject: Split radio i2c drivers into target tree where they belong. No changes to binaries produced. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15558 a1c6a512-1295-4272-9138-f99709370657 --- .../target/coldfire/iaudio/x5/fmradio_i2c-x5.c | 37 ++++ .../target/coldfire/iriver/fmradio_i2c-iriver.c | 242 +++++++++++++++++++++ .../target/sh/archos/ondio/fmradio_i2c-ondio.c | 197 +++++++++++++++++ 3 files changed, 476 insertions(+) create mode 100644 firmware/target/coldfire/iaudio/x5/fmradio_i2c-x5.c create mode 100644 firmware/target/coldfire/iriver/fmradio_i2c-iriver.c create mode 100644 firmware/target/sh/archos/ondio/fmradio_i2c-ondio.c (limited to 'firmware/target') diff --git a/firmware/target/coldfire/iaudio/x5/fmradio_i2c-x5.c b/firmware/target/coldfire/iaudio/x5/fmradio_i2c-x5.c new file mode 100644 index 0000000000..6ee670f9fe --- /dev/null +++ b/firmware/target/coldfire/iaudio/x5/fmradio_i2c-x5.c @@ -0,0 +1,37 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id:$ + * Physical interface of the Philips TEA5767 in iAudio x5 + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "config.h" + +#if (CONFIG_TUNER & TEA5767) + +#include "i2c-coldfire.h" + +int fmradio_i2c_write(unsigned char address, const unsigned char* buf, + int count) +{ + return i2c_write(I2C_IFACE_0, address, buf, count); +} + +int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count) +{ + return i2c_read(I2C_IFACE_0, address, buf, count); +} + +#endif diff --git a/firmware/target/coldfire/iriver/fmradio_i2c-iriver.c b/firmware/target/coldfire/iriver/fmradio_i2c-iriver.c new file mode 100644 index 0000000000..7c431dae2b --- /dev/null +++ b/firmware/target/coldfire/iriver/fmradio_i2c-iriver.c @@ -0,0 +1,242 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id:$ + * Physical interface of the Philips TEA5767 in iriver H100/H300 series + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * 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 "logf.h" +#include "system.h" + +#if (CONFIG_TUNER & TEA5767) + +/* cute little functions, atomic read-modify-write */ +/* SDA is GPIO1,23 */ + +#ifdef IRIVER_H300_SERIES + +/* SDA is GPIO57 */ +#define SDA_OUTINIT and_l(~0x02000000, &GPIO1_OUT) +#define SDA_HI_IN and_l(~0x02000000, &GPIO1_ENABLE) +#define SDA_LO_OUT or_l( 0x02000000, &GPIO1_ENABLE) +#define SDA ( 0x02000000 & GPIO1_READ) + +/* SCL is GPIO56 */ +#define SCL_INPUT and_l(~0x01000000, &GPIO1_ENABLE) +#define SCL_OUTPUT or_l( 0x01000000, &GPIO1_ENABLE) +#define SCL_LO and_l(~0x01000000, &GPIO1_OUT) +#define SCL_HI or_l( 0x01000000, &GPIO1_OUT) +#define SCL ( 0x01000000 & GPIO1_READ) + +#else + +/* SDA is GPIO55 */ +#define SDA_OUTINIT and_l(~0x00800000, &GPIO1_OUT) +#define SDA_HI_IN and_l(~0x00800000, &GPIO1_ENABLE) +#define SDA_LO_OUT or_l( 0x00800000, &GPIO1_ENABLE) +#define SDA ( 0x00800000 & GPIO1_READ) + +/* SCL is GPIO3 */ +#define SCL_INPUT and_l(~0x00000008, &GPIO_ENABLE) +#define SCL_OUTPUT or_l( 0x00000008, &GPIO_ENABLE) +#define SCL_LO and_l(~0x00000008, &GPIO_OUT) +#define SCL_HI or_l( 0x00000008, &GPIO_OUT) +#define SCL ( 0x00000008 & GPIO_READ) +#endif + +/* delay loop to achieve 400kHz at 120MHz CPU frequency */ +#define DELAY \ + ({ \ + int _x_; \ + asm volatile ( \ + "move.l #21, %[_x_] \r\n" \ + "1: \r\n" \ + "subq.l #1, %[_x_] \r\n" \ + "bhi.b 1b \r\n" \ + : [_x_]"=&d"(_x_) \ + ); \ + }) + +static void fmradio_i2c_start(void) +{ + SCL_HI; + SCL_OUTPUT; + SDA_HI_IN; + SDA_OUTINIT; + DELAY; + SDA_LO_OUT; + DELAY; + SCL_LO; +} + +static void fmradio_i2c_stop(void) +{ + SDA_LO_OUT; + DELAY; + SCL_HI; + DELAY; + SDA_HI_IN; +} + +/* Generate ACK or NACK */ +static void fmradio_i2c_ack(bool nack) +{ + /* Here's the deal. The slave is slow, and sometimes needs to wait + before it can receive the acknowledge. Therefore it forces the clock + low until it is ready. We need to poll the clock line until it goes + high before we release the ack. + + In their infinite wisdom, iriver didn't pull up the SCL line, so + we have to drive the SCL high repeatedly to simulate a pullup. */ + + if (nack) + SDA_HI_IN; + else + SDA_LO_OUT; + DELAY; + + SCL_HI; + do + { + SCL_OUTPUT; /* Set the clock to output */ + SCL_INPUT; /* Set the clock to input */ + DELAY; + } + while(!SCL); /* and wait for the slave to release it */ + + SCL_OUTPUT; + SCL_LO; +} + +static int fmradio_i2c_getack(void) +{ + int ret = 1; + + /* Here's the deal. The slave is slow, and sometimes needs to wait + before it can send the acknowledge. Therefore it forces the clock + low until it is ready. We need to poll the clock line until it goes + high before we read the ack. + + In their infinite wisdom, iriver didn't pull up the SCL line, so + we have to drive the SCL high repeatedly to simulate a pullup. */ + + SDA_HI_IN; + DELAY; + + SCL_HI; /* set clock to high */ + do + { + SCL_OUTPUT; /* Set the clock to output */ + SCL_INPUT; /* Set the clock to input */ + DELAY; + } + while(!SCL); /* and wait for the slave to release it */ + + if (SDA) + ret = 0; /* ack failed */ + + SCL_OUTPUT; + SCL_LO; + + return ret; +} + +static void fmradio_i2c_outb(unsigned char byte) +{ + int i; + + /* clock out each bit, MSB first */ + for ( i=0x80; i; i>>=1 ) { + if ( i & byte ) + SDA_HI_IN; + else + SDA_LO_OUT; + DELAY; + SCL_HI; + DELAY; + SCL_LO; + } +} + +static unsigned char fmradio_i2c_inb(void) +{ + int i; + unsigned char byte = 0; + + SDA_HI_IN; + /* clock in each bit, MSB first */ + for ( i=0x80; i; i>>=1 ) { + DELAY; + SCL_HI; + DELAY; + if ( SDA ) + byte |= i; + SCL_LO; + } + + return byte; +} + +int fmradio_i2c_write(int address, const unsigned char* buf, int count) +{ + int i,x=0; + + fmradio_i2c_start(); + fmradio_i2c_outb(address & 0xfe); + if (fmradio_i2c_getack()) + { + for (i=0; i0; i--) + { + *buf++ = fmradio_i2c_inb(); + fmradio_i2c_ack(i == 1); + } + } + else + x=-1; + fmradio_i2c_stop(); + return x; +} + +#endif diff --git a/firmware/target/sh/archos/ondio/fmradio_i2c-ondio.c b/firmware/target/sh/archos/ondio/fmradio_i2c-ondio.c new file mode 100644 index 0000000000..f62797480a --- /dev/null +++ b/firmware/target/sh/archos/ondio/fmradio_i2c-ondio.c @@ -0,0 +1,197 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id:$ + * Physical interface of the Philips TEA5767 in Archos Ondio + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * 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 "logf.h" +#include "system.h" + +#if (CONFIG_TUNER & TEA5767) + +/* cute little functions, atomic read-modify-write */ +/* SDA is PB4 */ +#define SDA_LO and_b(~0x10, &PBDRL) +#define SDA_HI or_b(0x10, &PBDRL) +#define SDA_INPUT and_b(~0x10, &PBIORL) +#define SDA_OUTPUT or_b(0x10, &PBIORL) +#define SDA (PBDR & 0x0010) + +/* SCL is PB1 */ +#define SCL_INPUT and_b(~0x02, &PBIORL) +#define SCL_OUTPUT or_b(0x02, &PBIORL) +#define SCL_LO and_b(~0x02, &PBDRL) +#define SCL_HI or_b(0x02, &PBDRL) +#define SCL (PBDR & 0x0002) + +/* arbitrary delay loop */ +#define DELAY do { int _x; for(_x=0;_x<20;_x++);} while (0) + +static void fmradio_i2c_start(void) +{ + SDA_OUTPUT; + SDA_HI; + SCL_HI; + SDA_LO; + DELAY; + SCL_LO; +} + +static void fmradio_i2c_stop(void) +{ + SDA_LO; + SCL_HI; + DELAY; + SDA_HI; +} + + +static void fmradio_i2c_ack(bool nack) +{ + /* Here's the deal. The slave is slow, and sometimes needs to wait + before it can receive the acknowledge. Therefore it forces the clock + low until it is ready. We need to poll the clock line until it goes + high before we release the ack. */ + + SCL_LO; /* Set the clock low */ + + if (nack) + SDA_HI; + else + SDA_LO; + + SCL_INPUT; /* Set the clock to input */ + while(!SCL) /* and wait for the slave to release it */ + sleep_thread(0); + + DELAY; + SCL_OUTPUT; + SCL_LO; +} + +static int fmradio_i2c_getack(void) +{ + int ret = 1; + + /* Here's the deal. The slave is slow, and sometimes needs to wait + before it can send the acknowledge. Therefore it forces the clock + low until it is ready. We need to poll the clock line until it goes + high before we read the ack. */ + + SDA_INPUT; /* And set to input */ + SCL_INPUT; /* Set the clock to input */ + while(!SCL) /* and wait for the slave to release it */ + sleep_thread(0); + + if (SDA) + /* ack failed */ + ret = 0; + + SCL_OUTPUT; + SCL_LO; + SDA_HI; + SDA_OUTPUT; + return ret; +} + +static void fmradio_i2c_outb(unsigned char byte) +{ + int i; + + /* clock out each bit, MSB first */ + for ( i=0x80; i; i>>=1 ) { + if ( i & byte ) + { + SDA_HI; + } + else + { + SDA_LO; + } + SCL_HI; + SCL_LO; + } + + SDA_HI; +} + +static unsigned char fmradio_i2c_inb(void) +{ + int i; + unsigned char byte = 0; + + /* clock in each bit, MSB first */ + for ( i=0x80; i; i>>=1 ) { + SDA_INPUT; /* And set to input */ + SCL_HI; + if ( SDA ) + byte |= i; + SCL_LO; + SDA_OUTPUT; + } + + return byte; +} + +int fmradio_i2c_write(int address, const unsigned char* buf, int count) +{ + int i,x=0; + + fmradio_i2c_start(); + fmradio_i2c_outb(address & 0xfe); + if (fmradio_i2c_getack()) + { + for (i=0; i0; i--) + { + *buf++ = fmradio_i2c_inb(); + fmradio_i2c_ack(i == 1); + } + } + else + x=-1; + fmradio_i2c_stop(); + return x; +} + +#endif -- cgit v1.2.3