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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 13:05:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 13:05:40 -0800
commit13dda80e48439b446d0bc9bab34b91484bc8f533 (patch)
treee8037122d65fe2a5dd8f633a7648b2597640a2ce /arch/arm/mach-davinci/include/mach/pm.h
parent379e3a820da171cb1d97e8dccd736a69cebfb7c0 (diff)
parent5f19daa16ffca55db5b0253eba2bd0f71ee7f7f4 (diff)
Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (40 commits) DaVinci DM365: Adding support for SPI EEPROM DaVinci DM365: Adding DM365 SPI support DaVinci DM355: Modifications to DM355 SPI support DaVinci: SPI: Adding header file for SPI support. davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup davinci: clkdev cleanup: remove clk_lookup wrapper, use clkdev_add_table() DaVinci: DM365: Voice codec support for the DM365 SoC davinci: clock: let clk->set_rate function sleep Add SDA and SCL pin numbers to i2c platform data davinci: da8xx/omap-l1xx: Add EDMA platform data for da850/omap-l138 davinci: build list of unused EDMA events dynamically davinci: Fix edma_alloc_channel api for EDMA_CHANNEL_ANY case davinci: Keep count of channel controllers on a platform davinci: Correct return value of edma_alloc_channel api davinci: add CDCE949 support on DM6467 EVM davinci: add support for CDCE949 clock synthesizer davinci: da850/omap-l138 EVM: register for suspend support davinci: da850/omap-l138: add support for SoC suspend davinci: add power management support DaVinci: DM365: Changing default queue for DM365. ...
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/pm.h')
-rw-r--r--arch/arm/mach-davinci/include/mach/pm.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/pm.h b/arch/arm/mach-davinci/include/mach/pm.h
new file mode 100644
index 00000000000..37b19bf35a8
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/pm.h
@@ -0,0 +1,54 @@
+/*
+ * TI DaVinci platform support for power management.
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc. http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef _MACH_DAVINCI_PM_H
+#define _MACH_DAVINCI_PM_H
+
+/*
+ * Caution: Assembly code in sleep.S makes assumtion on the order
+ * of the members of this structure.
+ */
+struct davinci_pm_config {
+ void __iomem *ddr2_ctlr_base;
+ void __iomem *ddrpsc_reg_base;
+ int ddrpsc_num;
+ void __iomem *ddrpll_reg_base;
+ void __iomem *deepsleep_reg;
+ void __iomem *cpupll_reg_base;
+ /*
+ * Note on SLEEPCOUNT:
+ * The SLEEPCOUNT feature is mainly intended for cases in which
+ * the internal oscillator is used. The internal oscillator is
+ * fully disabled in deep sleep mode. When you exist deep sleep
+ * mode, the oscillator will be turned on and will generate very
+ * small oscillations which will not be detected by the deep sleep
+ * counter. Eventually those oscillations will grow to an amplitude
+ * large enough to start incrementing the deep sleep counter.
+ * In this case recommendation from hardware engineers is that the
+ * SLEEPCOUNT be set to 4096. This means that 4096 valid clock cycles
+ * must be detected before the clock is passed to the rest of the
+ * system.
+ * In the case that the internal oscillator is not used and the
+ * clock is generated externally, the SLEEPCOUNT value can be very
+ * small since the clock input is assumed to be stable before SoC
+ * is taken out of deepsleep mode. A value of 128 would be more than
+ * adequate.
+ */
+ int sleepcount;
+};
+
+extern unsigned int davinci_cpu_suspend_sz;
+extern void davinci_cpu_suspend(struct davinci_pm_config *);
+
+#endif