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path: root/arch/arm/mach-omap2/smartreflex.c
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2012-03-05ARM: OMAP3+: SmartReflex: fix error handlingJean Pihet
Fix the code to correctly use IS_ERR and PTR_ERR on the return values pointers Reported-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* APIJean Pihet
The debugfs_create_* API returns a return code or NULL in the return ptr in case of problem. Fix the smartreflex code to take this into account. Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: micro-optimization for sanity checkFelipe Balbi
val && (val != 1) == val > 1 Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: misc cleanupsFelipe Balbi
There are no functional changes here, only misc cleanups in general: - re-organize variable declarations, - converting if {} else if {} else {} into switch statements, - correct comments typos, - add/remove white lines to improve readability, - etc. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argumentFelipe Balbi
no functional changes, trivial patch. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata()Felipe Balbi
That's very useful to fetch the correct struct sr_info from the PM handlers. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a needNishanth Menon
The VPBOUNDINTST field of the ERRCONFIG register has an additional functional meaning of force clearing the SR internal signal with VP (sr_interruptz). This can result in scenarios where the VP->SR protocol is violated because the SR internal signal with VP is already high and VP will never clear the vpirqclr signal. Therefore during the next force update to reset to nominal voltage, VP cannot pulse vpirqclr, so the PRCM HW cannot generate the tranxdone IRQ and the situation is not recoverable until a cold reset is invoked. To prevent this situation, check if status is set before clearing it as this needs to be done only on a need basis. Reported-by: Vincent Bour <v-bour@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG registerNishanth Menon
ERRCONFIG register has status bits that were intended not to be destroyed by bad modification. We cleanup and simplify the handling the status in the modify path. Reported-by: Vincent Bour <v-bour@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: Add a shutdown hookNishanth Menon
SmartReflex fix for erratum ID i724. Since OMAP's VP and PRM modules do not get reset by warm reset, we should ensure that proper shutdown procedure is followed prior to allowing the kernel to reboot back up. Without this, Smartreflex module might be left active or system might be caught in an indeterminate sequence when software controlled reboot is triggered, leaving the next reboot behavior to be unpredictable. In the case of hardware controlled warm reset such as that by watchdog timer, prevention of this scenario is not possible. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VPNishanth Menon
SmartReflex AVS Errorgen module supplies signals to Voltage Processor. It is suggested that by disabling Errorgen module before we disable VP, we might be able to ensure lesser chances of race condition to occur in the system. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-05ARM: OMAP3+: SmartReflex: fix err interrupt disable sequenceNishanth Menon
sr_modify_mask takes mask, value as parameters, the usage currently is value, mask which is wrong, as a result vpboundint_st which was supposed to have been disabled, does not get disabled. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-02-24ARM: OMAP2+: Fix devexit for smartreflex when CONFIG_HOTPLUG is not setTony Lindgren
Otherwise we get: `omap_sr_remove' referenced in section `.data' of arch/arm/mach-omap2/built-in.o: defined in discarded section `.devexit.text' of arch/arm/mach-omap2/built-in.o Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-01-26ARM: OMAP2+: arch/arm/mach-omap2/smartreflex.c: add missing iounmapJulia Lawall
Add missing iounmap in error handling code, in a case where the function already preforms iounmap on some other execution path. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; statement S,S1; int ret; @@ e = \(ioremap\|ioremap_nocache\)(...) ... when != iounmap(e) if (<+...e...+>) S ... when any when != iounmap(e) *if (...) { ... when != iounmap(e) return ...; } ... when any iounmap(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-12-05Merge branch 'for-rmk' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable Conflicts: arch/arm/common/gic.c arch/arm/plat-omap/include/plat/common.h
2011-11-23ARM: OMAP: smartreflex: fix IRQ handling bugFelipe Balbi
Fix a bug which has been on this driver since it was added by the original commit 984aa6db which would never clear IRQSTATUS bits. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com> Cc: stable@vger.kernel.org Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-11-17ARM: 7159/1: OMAP: Introduce local common.h filesTony Lindgren
As suggested by Russell King - ARM Linux <linux@arm.linux.org.uk>, there's no need to keep local prototypes in non-local headers. Add mach-omap1/common.h and mach-omap2/common.h and move the local prototypes there from plat/common.h and mach/omap4-common.h. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-11-07ARM: OMAP: Fix export.h or module.h includesTony Lindgren
Commit 32aaeffbd4a7457bf2f7448b33b5946ff2a960eb (Merge branch 'modsplit-Oct31_2011'...) caused some build errors. Fix these and make sure we always have export.h or module.h included for MODULE_ and EXPORT_SYMBOL users: $ grep -rl ^MODULE_ arch/arm/*omap*/*.c | xargs \ grep -L linux/module.h arch/arm/mach-omap2/dsp.c arch/arm/mach-omap2/mailbox.c arch/arm/mach-omap2/omap-iommu.c arch/arm/mach-omap2/smartreflex.c Also check we either have export.h or module.h included for the files exporting symbols: $ grep -rl EXPORT_SYMBOL arch/arm/*omap*/*.c | xargs \ grep -L linux/export.h | xargs grep -L linux/module.h Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-11-01Merge branch 'next/pm' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds
* 'next/pm' of git://git.linaro.org/people/arnd/arm-soc: (66 commits) ARM: CSR: PM: use outer_resume to resume L2 cache ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII ARM: OMAP: voltage: voltage layer present, even when CONFIG_PM=n ARM: CSR: PM: add sleep entry for SiRFprimaII ARM: CSR: PM: save/restore irq status in suspend cycle ARM: CSR: PM: save/restore timer status in suspend cycle OMAP4: PM: TWL6030: add cmd register OMAP4: PM: TWL6030: fix ON/RET/OFF voltages OMAP4: PM: TWL6030: address 0V conversions OMAP4: PM: TWL6030: fix uv to voltage for >0x39 OMAP4: PM: TWL6030: fix voltage conversion formula omap: voltage: add a stub header file for external/regulator use OMAP2+: VC: more registers are per-channel starting with OMAP5 OMAP3+: voltage: update nominal voltage in voltdm_scale() not VC post-scale OMAP3+: voltage: rename omap_voltage_get_nom_volt -> voltdm_get_voltage OMAP3+: voltdm: final removal of omap_vdd_info OMAP3+: voltage: move/rename curr_volt from vdd_info into struct voltagedomain OMAP3+: voltage: rename scale and reset functions using voltdm_ prefix OMAP3+: VP: combine setting init voltage into common function OMAP3+: VP: remove unused omap_vp_get_curr_volt() ... Fix up trivial conflict in arch/arm/mach-prima2/l2x0.c (code removal vs edit)
2011-09-15OMAP3+: voltage: remove unneeded debugfs interfaceKevin Hilman
Remove read-only debugfs interface to VP values. Most of the values are init-time only and never change. Current voltage value should be retreived from the (eventual) regulator framework interface to the voltage domain. Fixes to original version provided by Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15Merge branch 'master' into for-nextJiri Kosina
Fast-forward merge with Linus to be able to merge patches based on more recent version of the tree.
2011-09-15treewide: typo 'interrrupt' word corrections.Vitaliy Ivanov
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-08-05OMAP2+: PM: SmartReflex: use put_sync_suspend for IRQ-safe disablingColin Cross
omap_sr_disable_reset_volt is called with irqs off in omapx_enter_sleep, as part of idle sequence, this eventually calls sr_disable and pm_runtime_put_sync. pm_runtime_put_sync calls rpm_idle, which will enable interrupts in order to call the callback. In this short interval when interrupts are enabled, scenarios such as the following can occur: while interrupts are enabled, the timer interrupt that is supposed to wake the device out of idle occurs and is acked, so when the CPU finally goes to off, the timer is already gone, missing a wakeup event. Further, as the documentation for runtime states:" However, subsystems can use the pm_runtime_irq_safe() helper function to tell the PM core that a device's ->runtime_suspend() and ->runtime_resume() callbacks should be invoked in atomic context with interrupts disabled (->runtime_idle() is still invoked the default way)." Hence, replace pm_runtime_put_sync with pm_runtime_put_sync_suspend to invoke the suspend handler and shut off the fclk for SmartReflex module instead of using the idle handler in interrupt disabled context. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Colin Cross <ccross@google.com> [khilman@ti.com: minor Subject edits] Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-08-05OMAP3+: SR: ensure pm-runtime callbacks can be invoked with IRQs disabledNishanth Menon
SmartReflex should be disabled while entering low power mode due to a) SmartReflex values are not defined for retention voltage, further b) with SmartReflex enabled, if CPU enters lower c-states, FSM will try to bump the voltage to current OPP's voltage for which it has entered c-state; hence SmartReflex needs to be disabled for MPU, CORE and IVA voltage domains in idle path before enabling auto retention voltage achievement on the device. However, since the current pm_runtime setup for SmartReflex devices are setup to allow callbacks to be invoked with interrupts enabled, calling SmartReflex enable/disable from other contexts such as idle paths where preemption is disabled causes warnings such as the following indicating of a potential race. [ 82.023895] [<c04d079c>] (__irq_svc+0x3c/0x120) from [<c04d0484>] (_raw_spin_unlock_irq+0x28/0x2c) [ 82.023895] [<c04d0484>] (_raw_spin_unlock_irq+0x28/0x2c) from [<c0323234>] (rpm_callback+0x4c/0x68) [ 82.023956] [<c0323234>] (rpm_callback+0x4c/0x68) from [<c0323f7c>] (rpm_resume+0x338/0x53c) [ 82.023956] [<c0323f7c>] (rpm_resume+0x338/0x53c) from [<c03243f4>] (__pm_runtime_resume+0x48/0x60) [ 82.023986] [<c03243f4>] (__pm_runtime_resume+0x48/0x60) from [<c008aee0>] (sr_enable+0xa8/0x19c) [ 82.023986] [<c008aee0>] (sr_enable+0xa8/0x19c) from [<c008b2fc>] (omap_sr_enable+0x50/0x90) [ 82.024017] [<c008b2fc>] (omap_sr_enable+0x50/0x90) from [<c00888c0>] (omap4_enter_sleep+0x138/0x168) Instead, we use pm_runtime_irq_safe to tell the PM core that callbacks can be invoked in interrupt disabled contexts. Acked-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> [khilman@ti.com: minor changelog edits] Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20OMAP3+: SR: fix cosmetic indentationNishanth Menon
Error label case seems to have a 2 tab indentation when just 1 is necessary. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20OMAP3+: SR: enable/disable SR only on needNishanth Menon
Since we already know the state of the autocomp enablement, we can see if the requested state is different from the current state and enable/disable SR only on the need basis. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20OMAP3+: SR: disable interrupt by defaultNishanth Menon
We will enable and disable interrupt on a need basis in the class driver. We need to keep the IRQ disabled by default else the forceupdate or vcbypass events could trigger events that we don't need/expect to handle. This is a preparation for SmartReflex AVS class drivers such as class 2 and class 1.5 which would need to use interrupts. Existing SmartReflex AVS class 3 driver does not require to use interrupts and is not impacted by this change. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20OMAP3+: SR: make notify independent of classNishanth Menon
Interrupt notification mechanism of SmartReflex can be used by the choice of implementation of the class driver. For example, Class 2 and Class 1.5 of SmartReflex can both use the interrupt notification to identify the transition of voltage or other events. Hence, the actual class does not matter for notifier. Let the class driver's handling decide how it should be used. SmartReflex driver should provide just the primitives. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-03OMAP3+: smartreflex: delete debugfs entries on probe errorAaro Koskinen
Delete created debugfs entries if probe fails. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-03OMAP3+: smartreflex: delete instance from sr_list on probe errorAaro Koskinen
If the probe fails, the node should be deleted from sr_list. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-03OMAP3+: smartreflex: fix ioremap leak on probe errorAaro Koskinen
Add missing iounmap() to error paths. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-03OMAP3+: smartreflex: request the memory regionAaro Koskinen
We are releasing the memory region, but never actually request it. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-03OMAP3+: smartreflex: fix sr_late_init() error path in probeAaro Koskinen
sr_late_init() will take care of freeing the resources. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-11Merge branch 'integration-2.6.39-for-tony' of ↵Tony Lindgren
git://git.pwsan.com/linux-integration into omap-for-linus Conflicts: arch/arm/mach-omap2/pm34xx.c
2011-03-10Merge remote branch 'remotes/origin/voltage_split_2.6.39' into ↵Paul Walmsley
tmp-integration-2.6.39-20110310-024 Conflicts: arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
2011-03-09OMAP2+: smartreflex: remove SR debug directory in omap_sr_remove()Anand S Sawant
omap_sr_probe() creates the smartreflex debug directory and its underlying nvalue debug directory. These directories are removed in omap_sr_remove(). Basic smartreflex functionality tested on OMAP3630 Zoom3 & OMAP4430 SDP Signed-off-by: Anand S Sawant <sawant@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-09OMAP: PM: SmartReflex: fix potential NULL dereferenceVasiliy Kulikov
kzalloc() may fail, if so return -ENOMEM. Also Walter Harms suggested to use kasprintf() instead of kzalloc+strcpy+strcat. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-07OMAP: smartreflex: move plat/smartreflex.h to mach-omap2/smartreflex.hPaul Walmsley
There's no reason for this header file to be in plat-omap/include/plat/smartreflex.h. The hardware devices are in OMAP2+ SoCs only. Leaving this header file in plat-omap causes problems due to cross-dependencies with other header files that should live in mach-omap2/. Thanks to Benoît Cousson <b-cousson@ti.com> for suggesting the removal of the smartreflex.h include from the OMAP3xxx hwmod data. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com>
2011-03-02OMAP2+: PM: SmartReflex: fix memory leaks in Smartreflex driverShweta Gulati
This Patch frees all the dynamically allocated memory which couldn't have been released in some error hitting cases. Signed-off-by: Shweta Gulati <shweta.gulati@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-02arm: mach-omap2: smartreflex: fix another memory leakAaro Koskinen
Temporary strings with volt_* file names should be released after the debugfs entries are created. While at it, also simplify the string allocation, and use just snprintf() to create the name. The patch eliminates kmemleak reports with the following stack trace (multiple objects depending on HW): unreferenced object 0xcedbc5a0 (size 64): comm "swapper", pid 1, jiffies 4294929375 (age 423.734s) hex dump (first 32 bytes): 76 6f 6c 74 5f 39 37 35 30 30 30 00 00 00 00 00 volt_975000..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<c012fee0>] create_object+0x104/0x208 [<c012dbc8>] kmem_cache_alloc_trace+0xf0/0x17c [<c0013f64>] omap_sr_probe+0x314/0x420 [<c02a1724>] platform_drv_probe+0x18/0x1c [<c02a088c>] driver_probe_device+0xc8/0x188 [<c02a09b4>] __driver_attach+0x68/0x8c [<c02a00ac>] bus_for_each_dev+0x44/0x74 [<c029f9e0>] bus_add_driver+0xa0/0x228 [<c02a0cac>] driver_register+0xa8/0x130 [<c02a1b2c>] platform_driver_probe+0x18/0x8c [<c0013c1c>] sr_init+0x40/0x74 [<c005a554>] do_one_initcall+0xc8/0x1a0 [<c00084f4>] kernel_init+0x150/0x218 [<c0065d64>] kernel_thread_exit+0x0/0x8 [<ffffffff>] 0xffffffff Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-02-07mach-omap2: smartreflex: world-writable debugfs voltage filesVasiliy Kulikov
Don't allow everybody to change voltage settings. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Kevin Hilman <khilman@ti.com> Acked-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-01-31OMAP: PM: SmartReflex: Fix possible null pointer read accessStefan Weil
These errors were found by cppcheck: arch/arm/mach-omap2/smartreflex.c:784: error: Possible null pointer dereference: sr_info arch/arm/mach-omap2/smartreflex.c:799: error: Possible null pointer dereference: sr_info Both conditional statements are executed when sr_info == NULL, so accessing sr_info->voltdm would fail. Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-01-31OMAP: PM: SmartReflex: Fix possible memory leakStefan Weil
sr_info was allocated and needs a kfree before returning. This error was reported by cppcheck: arch/arm/mach-omap2/smartreflex.c:837: error: Memory leak: sr_info To: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Stefan Weil <weil@mail.berlios.de> Acked-by: Shweta Gulati <shweta.gulati@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-01-24OMAP: PM: SmartReflex: Add missing IS_ERR testJulia Lawall
Function _sr_lookup, defined in the same file, returns ERR_PTR not NULL in an error case. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ identifier f; @@ f(...) { ... return ERR_PTR(...); } @@ identifier r.f, fld; expression x; statement S1,S2; @@ x = f(...) ... when != IS_ERR(x) ( if (IS_ERR(x) ||...) S1 else S2 | *x->fld ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Kevin Hilman <khilman@ti.com>
2010-12-22OMAP4: Smartreflex framework extensionsThara Gopinath
This patch extends the smartreflex framework to support OMAP4. The changes are minor like compiling smartreflex Kconfig option for OMAP4 also, and a couple of OMAP4 checks in the smartreflex framework. The change in sr_device.c where new logic has to be introduced for reading the efuse registers is due to the fact that in OMAP4 the efuse registers are 24 bit aligned. A __raw_readl will fail for non-32 bit aligned address and hence the 8-bit read and shift. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-22OMAP3: PM: Adding debug support to Voltage and Smartreflex driversThara Gopinath
This patch adds debug support to the voltage and smartreflex drivers. This means a whole bunch of voltage processor and smartreflex parameters are now visible through the pm debugfs. The voltage parameters can be viewed at /debug/voltage/vdd_<x>/<parameter> and the smartreflex parameters can be viewed at /debug/voltage/vdd_<x>/smartreflex/<parameter> Also smartreflex n-target values are now exposed out at /debug/voltage/vdd_<x>/smartreflex/nvalue/<voltage> This is a read-write interface which means user has the flexibility to change the n-target values for any opp. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-22OMAP3: PM: Adding smartreflex driver support.Thara Gopinath
SmartReflex modules do adaptive voltage control for real-time voltage adjustments. With Smartreflex the power supply voltage can be adapted to the silicon performance(manufacturing process, temperature induced performance, age induced performance etc). There are differnet classes of smartreflex implementation. Class-0: Manufacturing Test Calibration Class-1: Boot-Time Software Calibration Class-2: Continuous Software Calibration Class-3: Continuous Hardware Calibration Class-4: Fully Integrated Power Management OMAP3 has two smartreflex modules one associated with VDD MPU and the other associated with VDD CORE. This patch adds support for smartreflex driver. The driver is designed for Class-1 , Class-2 and Class-3 support and is a platform driver. Smartreflex driver can be enabled through a Kconfig option "SmartReflex support" under "System type"->"TI OMAP implementations" menu. Smartreflex autocompensation feature can be enabled runtime through a debug fs option. To enable smartreflex autocompensation feature echo 1 > /debug/voltage/vdd_<X>/smartreflex/autocomp To disable smartreflex autocompensation feature echo 0 > /debug/voltage/vdd_<X>/smartreflex/autocomp where X can be mpu, core , iva etc. This patch contains code originally in linux omap pm branch. Major contributors to this driver are Lesly A M, Rajendra Nayak, Kalle Jokiniemi, Paul Walmsley, Nishant Menon, Kevin Hilman. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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