diff options
author | Jens Arnold <amiconn@rockbox.org> | 2007-03-05 00:04:00 +0000 |
---|---|---|
committer | Jens Arnold <amiconn@rockbox.org> | 2007-03-05 00:04:00 +0000 |
commit | 8876018d25c6a56cce118482c1372bbff344cb23 (patch) | |
tree | a66dca10bf92674c655b9862fd366ecc77bba76a /firmware/target/coldfire/iaudio/pcf50606-iaudio.c | |
parent | ee07215d506def8d3483f4adf6e1d4ae51c10c52 (diff) | |
download | rockbox-8876018d25c6a56cce118482c1372bbff344cb23.tar.gz rockbox-8876018d25c6a56cce118482c1372bbff344cb23.zip |
Bring up the M5 port to a working stage: Extended numerous explicit checks for IAUDIO_X5 to also check for IAUDIO_M5, moved code around the target tree, added preliminary background for the sim.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12610 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/coldfire/iaudio/pcf50606-iaudio.c')
-rw-r--r-- | firmware/target/coldfire/iaudio/pcf50606-iaudio.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/firmware/target/coldfire/iaudio/pcf50606-iaudio.c b/firmware/target/coldfire/iaudio/pcf50606-iaudio.c new file mode 100644 index 0000000000..f8f6c1d675 --- /dev/null +++ b/firmware/target/coldfire/iaudio/pcf50606-iaudio.c @@ -0,0 +1,127 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2006 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 "system.h" +#include "kernel.h" +#include "pcf50606.h" +#include "button-target.h" +#include "powermgmt.h" + +/* These voltages were determined by measuring the output of the PCF50606 + on a running X5, and verified by disassembling the original firmware */ +static void set_voltages(void) +{ + static const unsigned char buf[4] = + { + 0xf4, /* IOREGC = 2.9V, ON in all states */ + 0xf0, /* D1REGC = 2.5V, ON in all states */ + 0xf6, /* D2REGC = 3.1V, ON in all states */ + 0xf4, /* D3REGC = 2.9V, ON in all states */ + }; + + pcf50606_write_multiple(0x23, buf, 4); +} + +static void init_pmu_interrupts(void) +{ + /* inital data is interrupt masks */ + unsigned char data[3] = + { + ~0x04, /* unmask ONKEY1S */ + ~0x00, + ~0x06, /* unmask ACDREM, ACDINS */ + }; + + /* make sure GPI0 interrupt is off before unmasking anything */ + and_l(~0xf, &INTPRI5); /* INT32 - Priority 0 (Off) */ + + /* unmask the PMU interrupts we want to service */ + pcf50606_write_multiple(0x05, data, 3); + /* clear INT1-3 as these are left set after standby */ + pcf50606_read_multiple(0x02, data, 3); + + /* Set to read pcf50606 INT but keep GPI0 off until init completes */ + and_l(~0x00000001, &GPIO_ENABLE); + or_l(0x00000001, &GPIO_FUNCTION); + or_l(0x00000100, &GPIO_INT_EN); /* GPI0 H-L */ +} + +static inline void enable_pmu_interrupts(void) +{ + /* clear pending GPI0 interrupts first or it may miss the first + H-L transition */ + or_l(0x00000100, &GPIO_INT_CLEAR); + or_l(0x3, &INTPRI5); /* INT32 - Priority 3 */ +} + +void pcf50606_init(void) +{ + pcf50606_i2c_init(); + + /* initialize pmu interrupts but don't service them yet */ + init_pmu_interrupts(); + set_voltages(); + + pcf50606_write(0x39, 0x00); /* GPOOD0 = green led OFF */ + pcf50606_write(0x3a, 0x00); /* GPOOD1 = red led OFF */ + + /* Accessory detect */ + pcf50606_write(0x33, 0x8c); /* ACDAPE=1, THRSHLD=2.20V */ + + /* allow GPI0 interrupts from PMU now */ + enable_pmu_interrupts(); +} + +void pcf50606_reset_timeout(void) +{ + int level = set_irq_level(HIGHEST_IRQ_LEVEL); + pcf50606_write(0x08, pcf50606_read(0x08) | 0x02); /* OOCC1 - TOTRST=1 */ + set_irq_level(level); +} + +/* Handles interrupts generated by the pcf50606 */ +void GPI0(void) __attribute__ ((interrupt_handler, section(".text"))); +void GPI0(void) +{ + unsigned char data[3]; /* 0 = INT1, 1 = INT2, 2 = INT3 */ + + /* Clear pending GPI0 interrupts */ + or_l(0x00000100, &GPIO_INT_CLEAR); + + /* clear pending interrupts from pcf50606 */ + pcf50606_read_multiple(0x02, data, 3); + + if (data[0] & 0x04) + { + /* ONKEY1S */ + if (GPIO_READ & 0x02000000) + sys_poweroff(); /* main ONKEY */ + else + pcf50606_reset_timeout(); /* remote ONKEY */ + } + + if (data[2] & 0x06) + { + /* ACDINS/ACDREM */ + /* Check if main buttons should be actually be scanned or not + - bias towards "yes" out of paranoia. */ + button_enable_scan((data[2] & 0x02) != 0 || + (pcf50606_read(0x33) & 0x01) != 0); + } +} |