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path: root/drivers/mfd/db8500-prcmu.c
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2012-06-01ARM: ux500: Provide regulator support for SMSC911x via Device TreeLee Jones1-0/+1
This patch adds a fixed regulator for use by the SMSC911x Ethernet chip driver into the db8500 Device Tree. It also references other regulators required by the same device. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-09mfd: Add support for db8500-prcmu regulator supply for nmk-i2c.4Lee Jones1-0/+1
This applies a supply alias for the db8500's fifth Nomadik i2c port. Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-09mfd: Enable Device Tree support for the db8500-prcmuLee Jones1-10/+19
This patch will enable probing to occur during a Device Tree enabled boot. The IRQ base is expected to be located in and will be fetched from the DT itself. We also prevent any of the db8500 regulators from being registered here, as they will be enabled via DT instead. Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-09mfd: Register db8500-prcmu as a platform driver instead of only probingLee Jones1-2/+3
Pass the probe function as part of the platform_driver struct and register using the more common platform_driver_register call. In subsequent patches we'll also add DT support into the struct. Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-04-13ARM: 7366/3: amba: Remove AMBA level regulator supportMark Brown1-0/+1
The AMBA bus regulator support is being used to model on/off switches for power domains which isn't terribly idiomatic for modern kernels with the generic power domain code and creates integration problems on platforms which don't use regulators for their power domains as it's hard to tell the difference between a regulator that is needed but failed to be provided and one that isn't supposed to be there (though DT does make that easier). Platforms that wish to use the regulator API to manage their power domains can indirect via the power domain interface. This feature is only used with the vape supply of the db8500 PRCMU driver which supplies the UARTs and MMC controllers, none of which have support for managing vcore at runtime in mainline (only pl022 SPI controller does). Update that supply to have an always_on constraint until the power domain support for the system is updated so that it is enabled for these users, this is likely to have no impact on practical systems as probably at least one of these devices will be active and cause AMBA to hold the supply on anyway. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-16mfd: Add 8420 variant to db8500-prcmuBengt Jonsson1-0/+2
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16mfd: Add 8520 PRCMU variant to db8500-prcmuBengt Jonsson1-0/+2
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Reviewed-by: Mattias Nilssson <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>
2012-03-16mfd: Remove obsolete hwacc implementation for db8500-prmcuMattias Nilsson1-155/+0
This patch removes the obsolete hwacc implementation in the DB8500 PRCMU driver. 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>
2012-03-16mfd: Add a prcmu_abb_write_masked routine to db8500-prcmuMattias Nilsson1-3/+25
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>
2012-03-06mfd : Check if the other db8500 core is in WFIDaniel Lezcano1-0/+12
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>
2012-03-06mfd : Check if the db8500 prcmu has pending irqDaniel Lezcano1-0/+20
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>
2012-03-06mfd : Copy the db8500 gic setting to the prcmuDaniel Lezcano1-0/+20
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>
2012-03-06mfd : Check if there are pending irq on the db8500 gicDaniel Lezcano1-0/+33
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>
2012-03-06mfd : Cleanup duplicate db8500 definitionsDaniel Lezcano1-10/+7
I missed in my previous patch the A9_MASK_REQ[_MASK] were already defined. Let's remove the duplicate definitions. The PRCMU_GIC_DELAY macro could be removed as it is not really useful here. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06mfd: Decouple/recouple gic from the ux500 PRCMUDaniel Lezcano1-0/+32
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>
2012-03-06mfd: Add initial db8500 prcmu register access apiMattias Nilsson1-19/+17
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>
2012-03-06mfd: Remove check for db8500 firmware bugJonas Aaberg1-8/+0
In prcmu firmware version 3.4.4 the issue with longer intervalls than 131 s was fixed, we don't expect the issue to creep back up. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06mfd: db8500 OPP and sleep handling updateMattias Nilsson1-1/+72
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>
2012-03-06mfd: Spawned db8500 regulators updateBengt Jonsson1-10/+15
As drivers have progressed and got some more review we have consequently moved things around: - Some device drivers have changed name and some were wrong from the beginning. - We removed the dependency from some domains to the VAPE domain - SIA MMDSP, SIA PIPE, SVA MMDSP and SVA PIPE power domains are handled outside the framework while ESRAM12 and ESRAM34 are actually handled inside the PRCMU. Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06mfd: db8500 clock handling updateMattias Nilsson1-79/+587
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>
2012-03-06mfd: Update abstract dbx500 interfaceMattias Nilsson1-21/+21
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>
2012-03-06mfd: Function for obtaining the db8500 prcmu firmware versionMattias Nilsson1-18/+33
This patch exports a function that can be used to tell which version of the DB8500 PRCMU firmware is available, and revamps the firmware detection code a bit. Reviewed-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> 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>
2012-03-06mfd: Remove db8500-prcmu U8400 legacyDaniel Willerud1-24/+2
This removes the U8400 legacy from PRCMU and cpufreq drivers. This platform has no current in-kernel users. Signed-off-by: Daniel Willerud <daniel.willerud@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-01-03mfd/db8500-prcmu: remove support for early silicon revisionsLinus Walleij1-5/+2
The DB8500 ED (Early Drop) and V1 are only available inside of ST-Ericsson or partners, we have actively replaced and scrapped these prototypes. All Nova products on the open market (such as the Snowball board) are based on V2 and later ASIC variants. So let us focus on supporting the silicon that will be used and delete this to get a clear overview. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Samuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-10-24mfd: Convert db8500-prcmu panic() into pr_crit()Linus Walleij1-3/+3
panic() is too heavy for this, indeed the PRCMU is critical for the system but not to the point that we should stop everything, if we can still get a prompt or so. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: Refactor db8500-prcmu request_clock() functionLinus Walleij1-8/+11
This refactors the mfd/dbx500-prcmu drivers to use a switch() statement rather than nested if/else-construction. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: Rename db8500-prcmu init functionLinus Walleij1-2/+2
This renames the PRCMU clock force initialization function to have a less generic name. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: db8500-prcmu voltage domain consumers additionsBengt Jonsson1-1/+51
This rectifies the device name of the MCDE voltage domain regulator consumer and adds a number of other consumers to the voltage domains. Cc: Liam Girdwood <lrg@ti.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: db8500-prcmu reset code retrievalSebastian Rasmussen1-0/+11
This implements the reset code retrieval function so we can ipso facto get to know how the system was reset. Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: db8500-prcmu tweak for modem wakeupMattias Nilsson1-4/+28
This is a tweak for the case where the modem goes to sleep while emitting the AC_WAKE_ACK anyway. Also print the modem errors as critical, since they jeopardize the entire platform when they occur. 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>
2011-10-24mfd: Add db8500-pcmu watchdog accessor functions for watchdogJonas Aberg1-0/+72
This implements the watchdog accessor functions for the DB8500 PRCMU, making it possible to implement the watchdog driver. Signed-off-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>
2011-10-24mfd: hwacc power state db8500-prcmu accessorBengt Jonsson1-0/+126
This implements the accessor function for hardware accelerator power state settings. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24mfd: Add db8500-prcmu accessors for PLL and SGA clockMattias Nilsson1-1/+82
This extends the DB8500 PRCMU driver with accessor calls for the PRCMU PLL and SGA clocks. 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>
2011-10-24mfd: Move to the new db500 PRCMU APIMattias Nilsson1-23/+23
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>
2011-10-24mfd: Initialize DB8500 PRCMU regsMattias Nilsson1-0/+12
Some clocks may be force enabled when we probe the driver, but they need to be turned off by default so we have a known state. We call this the register initialization function if we need more stuff in there in the future. 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>
2011-10-24mfd: Extend DB8500 PRCMU mailbox defsMattias Nilsson1-2/+21
We have a few more mailboxes and fixed messages in the DB8500 PRCMU, update to match the latest specification. 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>
2011-10-24mfd: Refactor DB8500 PRCMU reg accessMattias Nilsson1-82/+77
Instead of carrying around the __PRCMU_BASE in every read or write to the PRCMU registers, move it out to the register definition file and define registers along with their base offset so that the code gets easier to read. 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>
2011-05-28mfd: Use mfd cell platform_data for db8500-prcmu cells platform bitsMattias Wallin1-1/+2
With the addition of a device platform mfd_cell pointer, MFD drivers can go back to passing platform data back to their sub drivers. This allows for an mfd_cell->mfd_data removal and thus keep the sub drivers MFD agnostic. This is mostly needed for non MFD aware sub drivers. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-05-24mach-ux500: voltage domain regulators for DB8500Bengt Jonsson1-0/+179
The DB8500 has ePOD:s (electronic power domains) which are possible to switch on/off to deactivate silicon blocks on the DB8500 SoC by cutting their power without retention. We model these as simple regulators with one bit on/off settings. Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com> Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: Martin Persson <martin.persson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-05-24mfd: update DB8500 PRCMU driverMattias Nilsson1-174/+1669
This updates the DB8500 PRCMU driver to the latest version available internally. Nominally we would update the dependent CPUfreq driver at the same time but since that is being moved around in this patch set we postpone that by simply deactivating it for the time being. This is a snapshot of the current PRCMU firmware API as it looks right now. The PRCMU firmware is still subject to change. This also updates the CPUfreq driver to a newer version that will utilize the new API. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com> Signed-off-by: Martin Persson <martin.persson@stericsson.com> Signed-off-by: Per Fransson <per.xx.fransson@stericsson.com> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Sebastien Rault <sebastien.rault@stericsson.com> Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Rickard Andersson <rickard.andersson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-05-24mach-ux500: move the DB8500 PRCMU driver to MFDLinus Walleij1-0/+395
We have decided that this function arbiter fits better in the MFD subsystem. Since we need to concatenate the split header files we move it basically like this: mv mach-ux500/prcmu-db8500.c drivers/mfd/db8500-prcmu.c mv mach-ux500/include/mach/prcmu-defs.h include/linux/mfd/db8500-prcmu.h mv mach-ux500/include/mach/prcmu-regs.h drivers/mfd/db8500-prcmu-regs.h mach-ux500/include/mach/prcmu.h >> include/linux/mfd/db8500-prcmu.h rm arch/arm/mach-ux500/include/mach/prcmu.h Then we update different #include statements and Makefile orders etc to make the PRCMU driver compile, link and boot in the new place without really changing any code. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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