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* mfd: dbx500-prcmu: Move PRCMU numerical clock identifiers into DT include fileLee Jones2013-09-261-75/+2
| | | | | | | | | | | These are required to request DBx500 PRCMU clocks from Device Tree. The numbers used are taken directly from the Hardware Specification document. We're moving them from the DBx500 PRCMU include file into the DT include directory and referencing them from the former via a #include. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* mfd: dbx500-prcmu: Correctly reorder PRCMU clock identifiersLee Jones2013-09-261-64/+71
| | | | | | | | ... as stipulated by the Hardware Specification document. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* mfd: db8500: Update BML clock register for db8580Philippe Begnic2013-06-061-0/+1
| | | | | | | | | BML clock register address in DB8580 has changed.Defined a new address under different name for DB8580. Signed-off-by: Philippe Begnic <philippe.begnic@st.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* mfd: db8500: Update register definition for u8540 clockPhilippe Begnic2013-06-061-0/+11
| | | | | | | | PRCMU and ab8500 registers updated for u8540 Signed-off-by: Philippe Begnic <philippe.begnic@st.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* ARM: ux500: split out prcmu initializationArnd Bergmann2013-04-081-0/+2
| | | | | | | | | | | | | | | | | This untangles the final bits of the prcmu code from the platform code: * The IRQ_PRCMU_* definitions move from irqs-db8500.h into prcmu.c because they are only of local significance. * u8500_thsens_device goes into the prcmu, because it uses a PRCMU IRQ that the platform does not see. * IRQ_DB8500_AB8500 and IRQ_PRCMU_BASE go into the platform data because the PRCMU does not see it. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> [Fixed a oneliner bug] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* ARM: ux500: move PM-related PRCMU functions to machineLinus Walleij2013-04-081-30/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are trying to decompose and decentralize the code in the DB8500 PRCMU out into subdrivers. The code moved in this patch concerns a group of functions used for decoupling and recoupling the IRQs from the GIC. During sleep and idle the Ux500 system will transfer all IRQ handling to the PRCMU using these functions. Basically we are left with the two alternatives of code placement as: - arch/arm/mach-ux500/pm.c - this because the code is closely related to the GIC, and takes ownership of some of the registers from the PRCMU related to this PM functionality. - drivers/mfd/db8500-prcmu-pm.c - because the code is affecting stuff in the PRCMU register range. But then this code needs to remap and handle GIC registers. This patch implementation is taking the first approach. Currently the cpuidle driver is the only piece of code using this set of functions, but it will later also be used by the suspend/resume code which is currently under review. The header file is moved to: <linux/platform_data/arm-ux500-pm.h> The function prototypes need to be placed in a globally visible header since the CPUidle code is planned to move out to drivers/cpuidle. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Rickard Andersson <rickard.andersson@stericsson.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* mfd: prcmu: pass a base and size with the early initcallLinus Walleij2013-04-081-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | This patch will make an early remapping of the PRCMU, to be used when setting up the clocks, that will call down into parts of the PRCMU driver before it is probed. Going forward this will be removed like this: - The mailbox subsystem need to be merged. http://marc.info/?l=linux-kernel&m=136314559201983&w=2 - At this point the PRCMU clock code can be moved over to the ux500 clock driver in drivers/clk/ux500/* and maintained there in a decentralized manner. - This early initcall and PRCMU base parameters become part of the ux500_clk_init() call instead. Cc: Suman Anna <s-anna@ti.com> Cc: Loic Pallardy <loic.pallardy@st.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* Merge tag 'mfd-3.9-1' of ↵Linus Torvalds2013-02-241-0/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull MFS updates from Samuel Ortiz: "This is the MFD pull request for the 3.9 merge window. No new drivers this time, but a bunch of fairly big cleanups: - Roger Quadros worked on a OMAP USBHS and TLL platform data consolidation, OMAP5 support and clock management code cleanup. - The first step of a major sync for the ab8500 driver from Lee Jones. In particular, the debugfs and the sysct interfaces got extended and improved. - Peter Ujfalusi sent a nice patchset for cleaning and fixing the twl-core driver, with a much needed module id lookup code improvement. - The regular wm5102 and arizona cleanups and fixes from Mark Brown. - Laxman Dewangan extended the palmas APIs in order to implement the palmas GPIO and rt drivers. - Laxman also added DT support for the tps65090 driver. - The Intel SCH and ICH drivers got a couple fixes from Aaron Sierra and Darren Hart. - Linus Walleij patchset for the ab8500 driver allowed ab8500 and ab9540 based devices to switch to the new abx500 pin-ctrl driver. - The max8925 now has device tree and irqdomain support thanks to Qing Xu. - The recently added rtsx driver got a few cleanups and fixes for a better card detection code path and now also supports the RTS5227 chipset, thanks to Wei Wang and Roger Tseng." * tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (109 commits) mfd: lpc_ich: Use devres API to allocate private data mfd: lpc_ich: Add Device IDs for Intel Wellsburg PCH mfd: lpc_sch: Accomodate partial population of the MFD devices mfd: da9052-i2c: Staticize da9052_i2c_fix() mfd: syscon: Fix sparse warning mfd: twl-core: Fix kernel panic on boot mfd: rtsx: Fix issue that booting OS with SD card inserted mfd: ab8500: Fix compile error mfd: Add missing GENERIC_HARDIRQS dependecies Documentation: Add docs for max8925 dt mfd: max8925: Add dts mfd: max8925: Support dt for backlight mfd: max8925: Fix onkey driver irq base mfd: max8925: Fix mfd device register failure mfd: max8925: Add irqdomain for dt mfd: vexpress: Allow vexpress-sysreg to self-initialise mfd: rtsx: Support RTS5227 mfd: rtsx: Implement driving adjustment to device-dependent callbacks mfd: vexpress: Add pseudo-GPIO based LEDs mfd: ab8500: Rename ab8500 to abx500 for hwmon driver ...
| * mfd: dbx500-prcmu: Add watchdog ID definitionsFabio Baltieri2013-02-141-0/+12
| | | | | | | | | | | | | | | | | | Add definition of watchdog IDs to be used by ux500_wdt driver. Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | mfd: db8500-prcmu: update resource passingLinus Walleij2013-02-121-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When trying to get rid of the cross-includes of <mach/id.h> from different drivers, so we can localize ASIC/CPU detection to the mach-ux500 folder, we run into the way the PRCMU handles base addresses and firmware detection. This patch updates the firmware version detection to pass the required information as platform data instead of relying on cpu_is_* macros. Now the PRCMU base address, the secondary TCDM area, the TCPM area and the IRQ are passed as resources instead of being grabbed from <mach/*> files. Incidentally this also removes part of the reliance on <mach/irqs.h>. Further it updates the firmware version detection, since the location of the firmware ID bytes in the designated memory are is now passed from the platform data instead. There is no reason not to include the nice split-off of a struct to hold the firmware information and a separate function to populate it. The patch actually rids the need to use the external db8500_prcmu_early_init call at all, but I'm keepin back that removal as I don't want the patch to be too big. Cc: arm@kernel.org Cc: Michel Jaoen <michel.jaouen@stericsson.com> Cc: Lee Jones <lee.jones@linaro.org> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Loic Pallardy <loic.pallardy@stericsson.com> Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | ARM: ux500: de-globalize <mach/id.h>Linus Walleij2013-01-291-2/+0
| | | | | | | | | | | | | | | | | | | | | | This removes the file <mach/id.h> from the global kernel include scope, making it a pure mach-ux500 detail. All ASIC specifics needed by drivers shall henceforth be passed from either platform data or the device tree. Cc: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | mfd: prcmu: delete pin control helpersLinus Walleij2013-01-291-79/+0
|/ | | | | | | | | | | | | These static inlines are duplicating the task now done by the Nomadik pinctrl drivers, so delete them from the prcmu static inlines, also delete the register definitions as these should only be known by the pinctrl driver. Cc: Loic Pallardy <loic.pallardy@st.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: Michel Jaouen <michel.jaouen@st.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* mfd: dbx500: Export prmcu_request_ape_opp_100_voltageUlf Hansson2012-10-291-0/+10
| | | | | | | | | | This function needs to be exported to let clients be able to request the ape opp 100 voltage. Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* mfd: dbx500: Provide a more accurate smp_twd clockMichel Jaouen2012-09-061-0/+1
| | | | | | | | | | | | The local timer clock is based on ARM subsystem clock. This patch obtains a more exact value of that clock by reading PRCMU registers. Using this increases the accuracy of the local timer events. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rickard Andersson <rickard.andersson@stericsson.com> Signed-off-by: Michel Jaouen <michel.jaouen@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* mfd: Update db8500-prmcu hostport_access enableArun Murthy2012-07-091-2/+5
| | | | | | | | | | | Force the Modem wakeup by asserting the CaWakeReq signal before the hostaccess_req/ack ping-pong sequence. The Awake_req signal is de-asserted asserted at the same time than the hostaccess_req. Return error on failure case so that the client using this can take appropiate steps. Signed-off-by: Arun Murthy <arun.murthy@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd/db5500-prcmu: delete DB5500 PRCMU supportLinus Walleij2012-05-021-199/+43
| | | | | | | | | | | | | | | This platform has been obsoleted and was only available inside of ST-Ericsson, no users of this code are left in the world. This deletes the core U5500 support entirely in the same manner as the obsoleted U8500 silicon was previously deleted. Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Cc: Jonas Aberg <jonas.aberg@stericsson.com> Cc: Per Forlin <per.forlin@stericsson.com> Cc: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* mfd: Add a prcmu_abb_write_masked routine to db8500-prcmuMattias Nilsson2012-03-161-0/+7
| | | | | | | | | | This patch adds driver support for the I2C read-modify-write service in the U8500 PRCMU firmware. Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd : Check if the other db8500 core is in WFIDaniel Lezcano2012-03-061-0/+8
| | | | | | | | | This patch allows to check if the other core is in WFI mode. It is the last check the idle routine has to do before entering into the retention state. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd : Check if the db8500 prcmu has pending irqDaniel Lezcano2012-03-061-0/+8
| | | | | | | | This patch allows to check if there are some pending irqs on the prcmu. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd : Copy the db8500 gic setting to the prcmuDaniel Lezcano2012-03-061-0/+8
| | | | | | | | | | In the case we go to the retention mode, we decoupled the gic in order to have the A9 core to reach a stable WFI state. But we want the prcmu to wake up the A9 when the gic has a pending irq which is done by copying the gic settings to the to the prcmu. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd : Check if there are pending irq on the db8500 gicDaniel Lezcano2012-03-061-0/+8
| | | | | | | | | | | This patch introduces a routine to check if there are some irqs pending on the gic. Usually this check is not relevant because it appears racy (an irq can arrive right after this check), but in the ux500 it makes sense because the prcmu decouples the gic from the A9 cores. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Decouple/recouple gic from the ux500 PRCMUDaniel Lezcano2012-03-061-0/+16
| | | | | | | | | | | | This patch allows to decouple and recouple the gic from the PRCMU. This is needed to put the A9 core in retention mode with the cpuidle driver. It is based on top of the "DB8500 PRCMU update" patchset. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Rickard Andersson <rickard.andersson@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Add initial db8500 prcmu register access apiMattias Nilsson2012-03-061-0/+122
| | | | | | | | | | | | | | | | | | | This patch adds an initial PRCMU register access API, which for now should only be used for a very limited set of registers. The idea about this API is that we split the PRCMU driver in one part that deals with interaction with the PRCMU firmware and one part that simply provide write accessors in the PRCMU register range. The latter are just a collection of registers exposed in the PRCMU register range for various purposes and not related to the PRCMU firmware. Currently we support some limited GPIO, SPI and UART settings through this API. Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: db8500 OPP and sleep handling updateMattias Nilsson2012-03-061-2/+13
| | | | | | | | | | | | | | | | This updates the operating point handling code by: - Supporting the DDR OPP retention state. - Supporting another low operating point named APE_50_PARTLY_25_OPP - Adding an interface to figure out if the sleep state change was properly achieved. Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: db8500 clock handling updateMattias Nilsson2012-03-061-0/+47
| | | | | | | | | | | | | | | | | | | | | This updates the clock handling in the DB8500 PRCMU driver with the latest findings and API changes related to changes in the backing firmware in the PRCMU. - Add the necessary interfaces to get the frequencies of the clocks and set the rate of some of the clocks. - Add support for controlling the clocks PLLSOC0, PLLDSI, DSI0, DSI1 and DSI escape clocks (DSInESCCLK). - Correct the PLLSDI enable/disable sequence by using the DSIPLL_CLAMPI bit. After this we will have the interfaces and code to implement the U8500 clock framework properly. Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Update abstract dbx500 interfaceMattias Nilsson2012-03-061-22/+153
| | | | | | | | | | | | | | This prefixes a number of accessor functions with db8500_* since they are DB8500-specific and we need to move to this naming scheme. We also replace numerous instances of machine_is() with cpu_is() which covers the right type of ASICs rather than entire machines i.e. boards. Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Move to the new db500 PRCMU APIMattias Nilsson2011-10-241-4/+4
| | | | | | | | | | | | | | Now that we have a shared API between the DB8500 and DB5500 PRCMU's, switch to using this neutral API instead. We delete the parts of db8500-prcmu.h that is now PRCMU-neutral, and calls will be diverted to respective driver. Common registers are in dbx500-prcmu-regs.h and common accessors and defines in <linux/mfd/dbx500-prcmu.h> This way we get a a lot more abstraction and code reuse. Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Create a common interface for dbx500 PRCMU driversMattias Nilsson2011-10-241-0/+549
This adds a header file that contains the set of functions and definitions that will be shared between the DB8500 and DB5500 PRCMU drivers. Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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