783c77531c
1. Slightly revised and regularized internal interface. Callback is used for read and write to provide completion signal instead of having two mechanisms. 2. Lower overhead for asynchronous or alterate completion callbacks. We now only init what is required by the transfer. A couple unneeded structure members were also nixed. 3. Fixes a bug that would neglect a semaphore wait if pumping the I2C interrupts in a loop when not in thread state or interrupts are masked. 4. Corrects broken initialization order by defining KDEV_INIT, which makes kernel_init() call kernel_device_init() to initialize additional devices _after_ the kernel, threading and synchronization objects are safe to use. 5. Locking set_cpu_frequency has to be done at the highest level in system.c to ensure the boost counter and the frequency are both set in agreement. Reconcile the locking inteface between PP and AMS (the only two currently using locking there) to keep it clean. Now works fine with voltages in GIT HEAD on my Fuze v2, type 0. Previously, everything crashed and died instantly. action.c calling set_cpu_frequency from a tick was part of it. The rest may have been related to 3. and 4. Honestly, I'm not certain! Testing by Mihail Zenkov indicates it solves our problems. This will get the developer builds running again after the kernel assert code push. Change-Id: Ie245994fb3e318dd5ef48e383ce61fdd977224d4
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/***************************************************************************
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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) 2008 Rafaël Carré
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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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#ifndef SYSTEM_TARGET_H
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#define SYSTEM_TARGET_H
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/* we need some system things initialized after the kernel init */
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#define KDEV_INIT
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#include "system-arm.h"
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#include "mmu-arm.h"
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#include "panic.h"
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#include "clock-target.h" /* CPUFREQ_* are defined here */
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void kernel_device_init(void);
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#define STORAGE_WANTS_ALIGN
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/* We can use a interrupt-based mechanism on the fuzev2 */
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#define INCREASED_SCROLLWHEEL_POLLING \
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(defined(HAVE_SCROLLWHEEL) && (CONFIG_CPU == AS3525))
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#if INCREASED_SCROLLWHEEL_POLLING
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/* let the timer interrupt twice as often for the scrollwheel polling */
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#define KERNEL_TIMER_FREQ (TIMER_FREQ/2)
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#else
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#define KERNEL_TIMER_FREQ TIMER_FREQ
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#endif
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#define AS3525_UNCACHED_ADDR(a) ((typeof(a)) ((uintptr_t)(a) + 0x10000000))
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#define AS3525_PHYSICAL_ADDR(a) \
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((typeof(a)) ((((uintptr_t)(a)) & (MEMORYSIZE*0x100000)) \
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? (((uintptr_t)(a)) - IRAM_ORIG) \
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: ((uintptr_t)(a))))
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#if defined(SANSA_FUZEV2) || defined(SANSA_CLIPPLUS) || defined(SANSA_CLIPZIP)
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extern int amsv2_variant;
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#endif
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#ifdef SANSA_C200V2
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/* 0: Backlight on A5, 1: Backlight on A7 */
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extern int c200v2_variant;
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/* c200v2 changes the timer interval often due to software pwm */
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#define TIMER_PERIOD TIMER2_BGLOAD
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#else
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#define TIMER_PERIOD (KERNEL_TIMER_FREQ/HZ)
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#endif
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void udelay(unsigned usecs);
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static inline void mdelay(unsigned msecs)
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{
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udelay(1000 * msecs);
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}
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void usb_insert_int(void);
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void usb_remove_int(void);
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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#define CPU_BOOST_LOCK_DEFINED
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static inline bool cpu_boost_lock(void)
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{
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bool set_cpu_frequency__lock(void);
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return set_cpu_frequency__lock();
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}
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static inline void cpu_boost_unlock(void)
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{
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void set_cpu_frequency__unlock(void);
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set_cpu_frequency__unlock();
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}
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#endif /* HAVE_ADJUSTABLE_CPU_FREQ */
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#endif /* SYSTEM_TARGET_H */
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