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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 03:28:15 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 03:28:15 +0100 |
commit | 0df0914d414a504b975f3cc66ace0c16ef55b7f3 (patch) | |
tree | c97ffa357943a8b226cdec1b9632c4cede813205 /arch/arm/mach-omap2/clkt2xxx_dpll.c | |
parent | Merge branch 'for-linus' of git://codeaurora.org/quic/kernel/davidb/linux-msm (diff) | |
parent | Merge branches 'devel-mux' and 'devel-misc' into omap-for-linus (diff) | |
download | linux-0df0914d414a504b975f3cc66ace0c16ef55b7f3.tar.xz linux-0df0914d414a504b975f3cc66ace0c16ef55b7f3.zip |
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (258 commits)
omap: zoom: host should not pull up wl1271's irq line
arm: plat-omap: iommu: fix request_mem_region() error path
OMAP2+: Common CPU DIE ID reading code reads wrong registers for OMAP4430
omap4: mux: Remove duplicate mux modes
omap: iovmm: don't check 'da' to set IOVMF_DA_FIXED flag
omap: iovmm: disallow mapping NULL address when IOVMF_DA_ANON is set
omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected
omap4: board-omap4panda: Initialise the serial pads
omap3: board-3430sdp: Initialise the serial pads
omap4: board-4430sdp: Initialise the serial pads
omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
omap2+: mux: Remove the use of IDLE flag
omap2+: Add separate list for dynamic pads to mux
perf: add OMAP support for the new power events
OMAP4: Add IVA OPP enteries.
OMAP4: Update Voltage Rail Values for MPU, IVA and CORE
OMAP4: Enable 800 MHz and 1 GHz MPU-OPP
OMAP3+: OPP: Replace voltage values with Macros
OMAP3: wdtimer: Fix CORE idle transition
Watchdog: omap_wdt: add fine grain runtime-pm
...
Fix up various conflicts in
- arch/arm/mach-omap2/board-omap3evm.c
- arch/arm/mach-omap2/clock3xxx_data.c
- arch/arm/mach-omap2/usb-musb.c
- arch/arm/plat-omap/include/plat/usb.h
- drivers/usb/musb/musb_core.h
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_dpll.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_dpll.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_dpll.c b/arch/arm/mach-omap2/clkt2xxx_dpll.c new file mode 100644 index 000000000000..1502a7bc20bb --- /dev/null +++ b/arch/arm/mach-omap2/clkt2xxx_dpll.c @@ -0,0 +1,63 @@ +/* + * OMAP2-specific DPLL control functions + * + * Copyright (C) 2011 Nokia Corporation + * Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <plat/clock.h> + +#include "clock.h" +#include "cm2xxx_3xxx.h" +#include "cm-regbits-24xx.h" + +/* Private functions */ + +/** + * _allow_idle - enable DPLL autoidle bits + * @clk: struct clk * of the DPLL to operate on + * + * Enable DPLL automatic idle control. The DPLL will enter low-power + * stop when its downstream clocks are gated. No return value. + * REVISIT: DPLL can optionally enter low-power bypass by writing 0x1 + * instead. Add some mechanism to optionally enter this mode. + */ +static void _allow_idle(struct clk *clk) +{ + if (!clk || !clk->dpll_data) + return; + + omap2xxx_cm_set_dpll_auto_low_power_stop(); +} + +/** + * _deny_idle - prevent DPLL from automatically idling + * @clk: struct clk * of the DPLL to operate on + * + * Disable DPLL automatic idle control. No return value. + */ +static void _deny_idle(struct clk *clk) +{ + if (!clk || !clk->dpll_data) + return; + + omap2xxx_cm_set_dpll_disable_autoidle(); +} + + +/* Public data */ + +const struct clkops clkops_omap2xxx_dpll_ops = { + .allow_idle = _allow_idle, + .deny_idle = _deny_idle, +}; + |