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path: root/arch/avr32/mach-at32ap/intc.c
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2008-07-02avr32: Power Management support ("standby" and "mem" modes)Haavard Skinnemoen
Implement Standby support. In this mode, we'll suspend all drivers, put the SDRAM in self-refresh mode and switch off the HSB bus ("frozen" mode.) Implement Suspend-to-mem support. In this mode, we suspend all drivers, put the SDRAM into self-refresh mode and switch off all internal clocks except the 32 kHz oscillator ("stop" mode.) The lowest-level suspend code runs from a small portion of SRAM allocated at startup time. This gets rid of a small potential race with the SDRAM where we might try to enter self-refresh mode in the middle of an icache burst. We also relocate all interrupt and exception handlers to SRAM during the small window when we enter and exit the low-power modes. We don't need to do any special tricks to start and stop the PLL. The main clock is automatically gated by hardware until the PLL is stable. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-07-02avr32: Add system device for the internal interrupt controller (intc)Haavard Skinnemoen
This makes the intc show up in sysfs (probably not very useful), and allows us to easily add suspend/resume support later. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19avr32: Delete mostly unused header asm/intc.hHaavard Skinnemoen
Move the only thing that was actually implemented and used in asm/intc.h, intc_get_pending(), into asm/irq.h and delete asm/intc.h Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-11-15[AVR32] Export intc_get_pending symbolHaavard Skinnemoen
Oprofile needs to call intc_get_pending() in order to determine whether a performance counter interrupt is pending. Also, include the header which declares intc_get_pending() and fix the definition to match the prototype. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-12-08[AVR32] Implement intc_get_pending()Haavard Skinnemoen
intc_get_pending() returns a bitmask with pending interrupts in a interrupt controller group (irq). This is used by the upcoming oprofile implementation for avr32 and may also be useful for chained interrupt controller drivers. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2006-10-11[PATCH] IRQ: Fix AVR32 breakageHaavard Skinnemoen
Make the necessary changes to AVR32 required by the irq regs stuff. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26[PATCH] avr32 architectureHaavard Skinnemoen
This adds support for the Atmel AVR32 architecture as well as the AT32AP7000 CPU and the AT32STK1000 development board. AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for cost-sensitive embedded applications, with particular emphasis on low power consumption and high code density. The AVR32 architecture is not binary compatible with earlier 8-bit AVR architectures. The AVR32 architecture, including the instruction set, is described by the AVR32 Architecture Manual, available from http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture. It features a 7-stage pipeline, 16KB instruction and data caches and a full Memory Management Unit. It also comes with a large set of integrated peripherals, many of which are shared with the AT91 ARM-based controllers from Atmel. Full data sheet is available from http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf while the CPU core implementation including caches and MMU is documented by the AVR32 AP Technical Reference, available from http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf Information about the AT32STK1000 development board can be found at http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918 including a BSP CD image with an earlier version of this patch, development tools (binaries and source/patches) and a root filesystem image suitable for booting from SD card. Alternatively, there's a preliminary "getting started" guide available at http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links to the sources and patches you will need in order to set up a cross-compiling environment for avr32-linux. This patch, as well as the other patches included with the BSP and the toolchain patches, is actively supported by Atmel Corporation. [dmccr@us.ibm.com: Fix more pxx_page macro locations] [bunk@stusta.de: fix `make defconfig'] Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Dave McCracken <dmccr@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>