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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 14:39:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 14:39:59 -0800
commitb3c37522928b5452588fc202eaa0f11f6e339256 (patch)
tree37bfe21d9977b15271903d1a4b304289a232e364 /arch/arm/mach-omap2/prcm-common.h
parent2ac9d7aaccbd598b5bd19ac40761b723bb675442 (diff)
parent6d0a5636fba5a3f82ec80ab124dd4748344549c3 (diff)
Merge tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
power management changes for omap and imx A significant part of the changes for these two platforms went into power management, so they are split out into a separate branch. * tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (65 commits) ARM: imx6: remove __CPUINIT annotation from v7_invalidate_l1 ARM: imx6: fix v7_invalidate_l1 by adding I-Cache invalidation ARM: imx6q: resume PL310 only when CACHE_L2X0 defined ARM: imx6q: build pm code only when CONFIG_PM selected ARM: mx5: use generic irq chip pm interface for pm functions on ARM: omap: pass minimal SoC/board data for UART from dt arm/dts: Add minimal device tree support for omap2420 and omap2430 omap-serial: Add minimal device tree support omap-serial: Use default clock speed (48Mhz) if not specified omap-serial: Get rid of all pdev->id usage ARM: OMAP2+: hwmod: Add a new flag to handle hwmods left enabled at init ARM: OMAP4: PRM: use PRCM interrupt handler ARM: OMAP3: pm: use prcm chain handler ARM: OMAP: hwmod: add support for selecting mpu_irq for each wakeup pad ARM: OMAP2+: mux: add support for PAD wakeup interrupts ARM: OMAP: PRCM: add suspend prepare / finish support ARM: OMAP: PRCM: add support for chain interrupt handler ARM: OMAP3/4: PRM: add functions to read pending IRQs, PRM barrier ARM: OMAP2+: hwmod: Add API to enable IO ring wakeup ARM: OMAP2+: mux: add wakeup-capable hwmod mux entries to dynamic list ...
Diffstat (limited to 'arch/arm/mach-omap2/prcm-common.h')
-rw-r--r--arch/arm/mach-omap2/prcm-common.h75
1 files changed, 74 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/prcm-common.h b/arch/arm/mach-omap2/prcm-common.h
index da2d80f5fcb..5aa5435e3ff 100644
--- a/arch/arm/mach-omap2/prcm-common.h
+++ b/arch/arm/mach-omap2/prcm-common.h
@@ -4,7 +4,7 @@
/*
* OMAP2/3 PRCM base and module definitions
*
- * Copyright (C) 2007-2009 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009, 2011 Texas Instruments, Inc.
* Copyright (C) 2007-2009 Nokia Corporation
*
* Written by Paul Walmsley
@@ -410,6 +410,79 @@
extern void __iomem *prm_base;
extern void __iomem *cm_base;
extern void __iomem *cm2_base;
+
+/**
+ * struct omap_prcm_irq - describes a PRCM interrupt bit
+ * @name: a short name describing the interrupt type, e.g. "wkup" or "io"
+ * @offset: the bit shift of the interrupt inside the IRQ{ENABLE,STATUS} regs
+ * @priority: should this interrupt be handled before @priority=false IRQs?
+ *
+ * Describes interrupt bits inside the PRM_IRQ{ENABLE,STATUS}_MPU* registers.
+ * On systems with multiple PRM MPU IRQ registers, the bitfields read from
+ * the registers are concatenated, so @offset could be > 31 on these systems -
+ * see omap_prm_irq_handler() for more details. I/O ring interrupts should
+ * have @priority set to true.
+ */
+struct omap_prcm_irq {
+ const char *name;
+ unsigned int offset;
+ bool priority;
+};
+
+/**
+ * struct omap_prcm_irq_setup - PRCM interrupt controller details
+ * @ack: PRM register offset for the first PRM_IRQSTATUS_MPU register
+ * @mask: PRM register offset for the first PRM_IRQENABLE_MPU register
+ * @nr_regs: number of PRM_IRQ{STATUS,ENABLE}_MPU* registers
+ * @nr_irqs: number of entries in the @irqs array
+ * @irqs: ptr to an array of PRCM interrupt bits (see @nr_irqs)
+ * @irq: MPU IRQ asserted when a PRCM interrupt arrives
+ * @read_pending_irqs: fn ptr to determine if any PRCM IRQs are pending
+ * @ocp_barrier: fn ptr to force buffered PRM writes to complete
+ * @save_and_clear_irqen: fn ptr to save and clear IRQENABLE regs
+ * @restore_irqen: fn ptr to save and clear IRQENABLE regs
+ * @saved_mask: IRQENABLE regs are saved here during suspend
+ * @priority_mask: 1 bit per IRQ, set to 1 if omap_prcm_irq.priority = true
+ * @base_irq: base dynamic IRQ number, returned from irq_alloc_descs() in init
+ * @suspended: set to true after Linux suspend code has called our ->prepare()
+ * @suspend_save_flag: set to true after IRQ masks have been saved and disabled
+ *
+ * @saved_mask, @priority_mask, @base_irq, @suspended, and
+ * @suspend_save_flag are populated dynamically, and are not to be
+ * specified in static initializers.
+ */
+struct omap_prcm_irq_setup {
+ u16 ack;
+ u16 mask;
+ u8 nr_regs;
+ u8 nr_irqs;
+ const struct omap_prcm_irq *irqs;
+ int irq;
+ void (*read_pending_irqs)(unsigned long *events);
+ void (*ocp_barrier)(void);
+ void (*save_and_clear_irqen)(u32 *saved_mask);
+ void (*restore_irqen)(u32 *saved_mask);
+ u32 *saved_mask;
+ u32 *priority_mask;
+ int base_irq;
+ bool suspended;
+ bool suspend_save_flag;
+};
+
+/* OMAP_PRCM_IRQ: convenience macro for creating struct omap_prcm_irq records */
+#define OMAP_PRCM_IRQ(_name, _offset, _priority) { \
+ .name = _name, \
+ .offset = _offset, \
+ .priority = _priority \
+ }
+
+extern void omap_prcm_irq_cleanup(void);
+extern int omap_prcm_register_chain_handler(
+ struct omap_prcm_irq_setup *irq_setup);
+extern int omap_prcm_event_to_irq(const char *event);
+extern void omap_prcm_irq_prepare(void);
+extern void omap_prcm_irq_complete(void);
+
# endif
#endif