Removed unneeded pcf50606.c.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11349 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis
parent
784dd78745
commit
1d6bfa972c
1 changed files with 0 additions and 538 deletions
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@ -1,538 +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) 2005 by Linus Nielsen Feltzing
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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 "config.h"
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#include "cpu.h"
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#include <stdbool.h>
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#include "kernel.h"
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#include "system.h"
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#include "hwcompat.h"
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#include "logf.h"
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#include "string.h"
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/* TODO: merge all bit-banged I2C into a generic I2C driver */
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#define USE_ASM
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#define SDA ( 0x00002000 & GPIO1_READ)
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#define SDA_LO_OUT or_l( 0x00002000, &GPIO1_ENABLE)
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#define SDA_HI_IN and_l(~0x00002000, &GPIO1_ENABLE)
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#define SCL ( 0x00001000 & GPIO_READ)
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#define SCL_LO_OUT or_l( 0x00001000, &GPIO_ENABLE)
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#define SCL_HI_IN and_l(~0x00001000, &GPIO_ENABLE); while(!SCL);
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#define DELAY \
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asm ( \
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"move.l %[dly],%%d0 \n" \
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"1: \n" \
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"subq.l #1,%%d0 \n" \
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"bhi.s 1b \n" \
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: : [dly]"d"(i2c_delay) : "d0" );
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static int i2c_delay IDATA_ATTR = 44;
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void pcf50606_i2c_recalc_delay(int cpu_clock)
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{
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i2c_delay = MAX(cpu_clock / (400000*2*3) - 7, 1);
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}
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inline void pcf50606_i2c_start(void)
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{
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#ifdef USE_ASM
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asm (
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"or.l %[sdab],(8,%[gpi1]) \n" /* SDA_LO_OUT */
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"or.l %[sclb],(8,%[gpio]) \n" /* SCL_LO_OUT */
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: /* outputs */
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay)
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: /* clobbers */
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"d0"
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);
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#else
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SDA_HI_IN;
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SCL_HI_IN;
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DELAY;
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SDA_LO_OUT;
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DELAY;
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SCL_LO_OUT;
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#endif
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}
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inline void pcf50606_i2c_stop(void)
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{
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#ifdef USE_ASM
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asm (
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"or.l %[sdab],(8,%[gpi1]) \n" /* SDA_LO_OUT */
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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: /* outputs */
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay)
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: /* clobbers */
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"d0"
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);
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#else
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SDA_LO_OUT;
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SCL_HI_IN;
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DELAY;
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SDA_HI_IN;
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#endif
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}
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inline void pcf50606_i2c_ack(bool ack)
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{
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#ifdef USE_ASM
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asm (
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"tst.b %[ack] \n" /* if (!ack) */
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"bne.s 1f \n"
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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".word 0x51fb \n" /* trapf.l : else */
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"1: \n"
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"or.l %[sdab],(8,%[gpi1]) \n" /* SDA_LO_OUT */
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"or.l %[sclb],(8,%[gpio]) \n" /* SCL_LO_OUT */
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: /* outputs */
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay),
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[ack] "d"(ack)
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: /* clobbers */
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"d0"
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);
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#else
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if(ack)
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SDA_LO_OUT;
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else
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SDA_HI_IN;
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SCL_HI_IN;
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DELAY;
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SCL_LO_OUT;
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#endif
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}
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inline bool pcf50606_i2c_getack(void)
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{
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bool ret;
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#ifdef USE_ASM
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asm (
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l (%[gpi1]),%%d0 \n" /* ret = !SDA */
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"btst.l #13,%%d0 \n"
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"seq.b %[ret] \n"
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"or.l %[sclb],(8,%[gpio]) \n" /* SCL_LO_OUT */
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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: /* outputs */
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[ret]"=&d"(ret)
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay)
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: /* clobbers */
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"d0"
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);
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#else
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SDA_HI_IN;
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DELAY;
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SCL_HI_IN;
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ret = !SDA;
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SCL_LO_OUT;
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DELAY;
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#endif
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return ret;
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}
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void pcf50606_i2c_outb(unsigned char byte)
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{
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#ifdef USE_ASM
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asm volatile (
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"moveq.l #24,%%d0 \n" /* byte <<= 24 */
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"lsl.l %%d0,%[byte] \n"
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"moveq.l #8,%%d1 \n" /* i = 8 */
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"2: \n" /* do */
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"lsl.l #1,%[byte] \n" /* if ((byte <<= 1) carry) */
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"bcc.s 1f \n"
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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".word 0x51fb \n" /* trapf.l; else */
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"1: \n"
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"or.l %[sdab],(8,%[gpi1]) \n" /* SDA_LO_OUT */
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"or.l %[sclb],(8,%[gpio]) \n" /* SCL_LO_OUT */
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"subq.l #1,%%d1 \n" /* i-- */
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"bne.s 2b \n" /* while (i != 0) */
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: /* outputs */
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[byte]"+d"(byte)
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay)
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: /* clobbers */
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"d0", "d1"
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);
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#else
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int i;
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/* clock out each bit, MSB first */
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for ( i=0x80; i; i>>=1 )
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{
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if ( i & byte )
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SDA_HI_IN;
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else
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SDA_LO_OUT;
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DELAY;
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SCL_HI_IN;
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DELAY;
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SCL_LO_OUT;
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}
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#endif
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}
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unsigned char pcf50606_i2c_inb(bool ack)
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{
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unsigned char byte = 0;
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#ifdef USE_ASM
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asm (
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"not.l %[sdab] \n" /* SDA_HI_IN */
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"and.l %[sdab],(8,%[gpi1]) \n"
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"not.l %[sdab] \n"
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"moveq.l #8,%%d1 \n" /* i = 8 */
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"clr.l %[byte] \n" /* byte = 0 */
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"2: \n" /* do */
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"not.l %[sclb] \n" /* SCL_HI_IN */
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"and.l %[sclb],(8,%[gpio]) \n"
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"not.l %[sclb] \n"
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"1: \n"
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"move.l (%[gpio]),%%d0 \n"
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"btst.l #12,%%d0 \n"
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"beq.s 1b \n"
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"lsl.l #1,%[byte] \n" /* byte <<= 1 */
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"move.l (%[gpi1]),%%d0 \n" /* if (SDA) */
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"btst.l #13,%%d0 \n"
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"beq.s 1f \n"
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"addq.l #1,%[byte] \n" /* byte++ */
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"1: \n"
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"or.l %[sclb],(8,%[gpio]) \n" /* SCL_LO_OUT */
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"move.l %[dly],%%d0 \n" /* DELAY */
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"1: \n"
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"subq.l #1,%%d0 \n"
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"bhi.s 1b \n"
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"subq.l #1,%%d1 \n" /* i-- */
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"bne.s 2b \n" /* while (i != 0) */
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: /* outputs */
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[byte]"=&d"(byte)
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: /* inputs */
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[gpio]"a"(&GPIO_READ),
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[sclb]"d"(0x00001000),
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[gpi1]"a"(&GPIO1_READ),
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[sdab]"d"(0x00002000),
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[dly] "d"(i2c_delay)
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: /* clobbers */
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"d0", "d1"
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);
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#else
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int i;
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/* clock in each bit, MSB first */
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SDA_HI_IN;
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for ( i=0x80; i; i>>=1 )
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{
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SCL_HI_IN;
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DELAY;
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if ( SDA )
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byte |= i;
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SCL_LO_OUT;
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DELAY;
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}
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#endif
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pcf50606_i2c_ack(ack);
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return byte;
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}
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int pcf50606_i2c_write(int address, const unsigned char* buf, int count)
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{
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int i,x=0;
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pcf50606_i2c_start();
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pcf50606_i2c_outb(address & 0xfe);
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if (pcf50606_i2c_getack())
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{
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for (i=0; i<count; i++)
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{
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pcf50606_i2c_outb(buf[i]);
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if (!pcf50606_i2c_getack())
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{
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x=-2;
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break;
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}
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}
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}
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else
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{
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logf("pcf50606_i2c_write() - no ack\n");
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x=-1;
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}
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return x;
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}
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int pcf50606_read_multiple(int address, unsigned char* buf, int count)
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{
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int i=0;
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int ret = 0;
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unsigned char obuf[1];
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obuf[0] = address;
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/* send read command */
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if (pcf50606_i2c_write(0x10, obuf, 1) >= 0)
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{
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pcf50606_i2c_start();
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pcf50606_i2c_outb(0x11);
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if (pcf50606_i2c_getack())
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{
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for(i = 0;i < count-1;i++)
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buf[i] = pcf50606_i2c_inb(true);
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buf[i] = pcf50606_i2c_inb(false);
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}
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else
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{
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ret = -1;
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}
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}
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pcf50606_i2c_stop();
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return ret;
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}
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int pcf50606_read(int address)
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{
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int ret;
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unsigned char c;
|
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ret = pcf50606_read_multiple(address, &c, 1);
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if(ret >= 0)
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return c;
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||||
else
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||||
return ret;
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||||
}
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||||
|
||||
int pcf50606_write_multiple(int address, const unsigned char* buf, int count)
|
||||
{
|
||||
unsigned char obuf[1];
|
||||
int i;
|
||||
int ret = 0;
|
||||
|
||||
obuf[0] = address;
|
||||
|
||||
/* send write command */
|
||||
if (pcf50606_i2c_write(0x10, obuf, 1) >= 0)
|
||||
{
|
||||
for (i=0; i<count; i++)
|
||||
{
|
||||
pcf50606_i2c_outb(buf[i]);
|
||||
if (!pcf50606_i2c_getack())
|
||||
{
|
||||
ret = -2;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = -1;
|
||||
}
|
||||
|
||||
pcf50606_i2c_stop();
|
||||
return ret;
|
||||
}
|
||||
|
||||
int pcf50606_write(int address, unsigned char val)
|
||||
{
|
||||
return pcf50606_write_multiple(address, &val, 1);
|
||||
}
|
||||
|
||||
|
||||
/* These voltages were determined by measuring the output of the PCF50606
|
||||
on a running H300, and verified by disassembling the original firmware */
|
||||
static void set_voltages(void)
|
||||
{
|
||||
static const unsigned char buf[5] =
|
||||
{
|
||||
0xf4, /* IOREGC = 2.9V, ON in all states */
|
||||
0xef, /* D1REGC = 2.4V, ON in all states */
|
||||
0x18, /* D2REGC = 3.3V, OFF in all states */
|
||||
0xf0, /* D3REGC = 2.5V, ON in all states */
|
||||
0xef, /* LPREGC1 = 2.4V, ON in all states */
|
||||
};
|
||||
|
||||
pcf50606_write_multiple(0x23, buf, 5);
|
||||
}
|
||||
|
||||
void pcf50606_init(void)
|
||||
{
|
||||
/* Bit banged I2C */
|
||||
or_l(0x00002000, &GPIO1_FUNCTION);
|
||||
or_l(0x00001000, &GPIO_FUNCTION);
|
||||
and_l(~0x00002000, &GPIO1_OUT);
|
||||
and_l(~0x00001000, &GPIO_OUT);
|
||||
and_l(~0x00002000, &GPIO1_ENABLE);
|
||||
and_l(~0x00001000, &GPIO_ENABLE);
|
||||
|
||||
set_voltages();
|
||||
|
||||
pcf50606_write(0x08, 0x60); /* Wake on USB and charger insertion */
|
||||
pcf50606_write(0x09, 0x05); /* USB and ON key debounce: 14ms */
|
||||
pcf50606_write(0x29, 0x1C); /* Disable the unused MBC module */
|
||||
|
||||
pcf50606_write(0x35, 0x13); /* Backlight PWM = 512Hz 50/50 */
|
||||
pcf50606_write(0x3a, 0x3b); /* PWM output on GPOOD1 */
|
||||
}
|
||||
Loading…
Reference in a new issue