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2014-10-27ARM: OMAP2+: PRM: add generic API for checking hardreset statusTero Kristo
PRM driver now has a generic API for checking hardreset status. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: add generic API for deasserting hardware resetTero Kristo
PRM driver now has a generic API for deasserting hardware resets. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: add generic API for asserting hardware resetTero Kristo
PRM driver now has a generic API for asserting hardware resets. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-05-08ARM: OMAP2+: raw read and write endian fixVictor Kamensky
All OMAP IP blocks expect LE data, but CPU may operate in BE mode. Need to use endian neutral functions to read/write h/w registers. I.e instead of __raw_read[lw] and __raw_write[lw] functions code need to use read[lw]_relaxed and write[lw]_relaxed functions. If the first simply reads/writes register, the second will byteswap it if host operates in BE mode. Changes are trivial sed like replacement of __raw_xxx functions with xxx_relaxed variant. Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-11-12ARM: OMAP3: clock: Add 3xxx data using common struct clkRajendra Nayak
The patch is the output from a python script which converts from the old OMAP clk format to COMMON clk format using a JSON parser in between which was developed by Paul Walmsley. Signed-off-by: Rajendra Nayak <rnayak@ti.com> [paul@pwsan.com: AM3517/05: dropped bogus hsotgusb "ick" and "fck" clkdev aliases; added hsotgusb_fck alias; added emac_ick and emac_fck aliases; replace omap2_init_clksel_parent() with omap2_clksel_find_parent_index(); reflow macros and parent name lists; add clkdm_name argument to DEFINE_STRUCT_CLK_HW_OMAP macros] Signed-off-by: Mike Turquette <mturquette@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-11-08ARM: OMAP2+: PRCM: consolidate PRCM-related timeout macrosPaul Walmsley
Consolidate all of the copies of MAX_MODULE_HARDRESET_WAIT and MAX_MODULE_SOFTRESET_WAIT into one place, arch/arm/mach-omap2/prm.h. Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
2012-10-21ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driverPaul Walmsley
The OMAP watchdog timer driver needs to determine what caused the SoC to reset for its GETBOOTSTATUS ioctl. So, define a set of standard reset sources across OMAP SoCs. For OMAP2xxx, 3xxx, and 4xxx SoCs, define mappings from the SoC-specific reset source register bits to the standardized reset source IDs. Create SoC-specific PRM functions that read the appropriate per-SoC register and use the mapping to return the standardized reset bits. Register the SoC-specific PRM functions with the common PRM code via prm_register(). Create a function in the common PRM code, prm_read_reset_sources(), that calls the SoC-specific function, registered during boot. This patch does not yet handle some SoCs, such as AM33xx. Those SoCs were not handled by the code this will replace. Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-10-21ARM: OMAP2/3: clockdomain/PRM/CM: move the low-level clockdomain functions ↵Paul Walmsley
into PRM/CM Move the low-level SoC-specific clockdomain control functions into cm*.c and prm*.c. For example, OMAP2xxx low-level clockdomain functions go into cm2xxx.c. Then remove the unnecessary clockdomain*xxx*.c files. The objective is to centralize low-level CM and PRM register accesses into the cm*.[ch] and prm*.[ch] files, and then to export an OMAP SoC-independent API to higher-level OMAP power management code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Vaibhav Hiremath <hvaibhav@ti.com> Acked-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-10-21ARM: OMAP2+: powerdomain/PRM: move the low-level powerdomain functions into PRMPaul Walmsley
Move the low-level SoC-specific powerdomain control functions into prm*.c. For example, OMAP2xxx low-level powerdomain functions go into prm2xxx.c. Then remove the unnecessary powerdomain*xxx*.c files. The objective is to centralize low-level PRM register accesses into the prm*.[ch] files, and then to export an OMAP SoC-independent API to higher-level OMAP power management code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Vaibhav Hiremath <hvaibhav@ti.com> Acked-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-10-21ARM: OMAP2+: PRM: split PRM functions into OMAP2, OMAP3-specific filesPaul Walmsley
Move OMAP3xxx-specific PRM functions & macros into prm3xxx.[ch] and OMAP2xxx-specific macros into prm2xxx.h. (prm2xxx.c will be created by a subsequent patch when it's needed.) Move basic PRM register access functions into static inline functions in prm2xxx_3xxx.h, leaving only OMAP2/3 hardreset functions in prm2xxx_3xxx.c. Also clarify the initcall function naming to reinforce that this code is specifically for the PRM IP block. This is in preparation for the upcoming powerdomain series and the upcoming move of this code to drivers/. Signed-off-by: Paul Walmsley <paul@pwsan.com> Reviewed-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-07-23Merge tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds
Pull arm-soc power management changes from Arnd Bergmann: "These are various power management related changes, mainly concerning cpuidle on i.MX and OMAP, as well as a the move of the omap smartreflex driver to live in the power subsystem." Fix up conflicts in arch/arm/mach-{imx/mach-imx6q.c,omap2/prm2xxx_3xxx.h} * tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits) ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge ARM: OMAP2+: do not allow SmartReflex to be built as a module ARM: OMAP2: Use hwmod to initialize mmc for 2420 ARM: OMAP3: PM: cpuidle: optimize the clkdm idle latency in C1 state ARM: OMAP3: PM: cpuidle: optimize the PER latency in C1 state ARM: OMAP3: PM: cpuidle: default to C1 in next_valid_state ARM: OMAP3: PM: cleanup cam_pwrdm leftovers ARM: OMAP3: PM: call pre/post transition per powerdomain ARM: OMAP2+: powerdomain: allow pre/post transtion to be per pwrdm ARM: OMAP3: PM: Remove IO Daisychain control from cpuidle ARM: OMAP3PLUS: hwmod: reconfigure IO Daisychain during hwmod mux ARM: OMAP3+: PRM: Enable IO wake up ARM: OMAP4: PRM: Add IO Daisychain support ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm file ARM: OMAP3: PM: correct enable/disable of daisy io chain ARM: OMAP2+: PRM: fix compile for OMAP4-only build W1: OMAP HDQ1W: use runtime PM ARM: OMAP2+: HDQ1W: use omap_device W1: OMAP HDQ1W: use 32-bit register accesses W1: OMAP HDQ1W: allow driver to be built on all OMAP2+ ...
2012-07-04ARM: OMAP2+: PRM/CM: Move the stubbed prm and cm functions to prcm.c file ↵R Sricharan
and make them __weak Some prm and cm registers read/write and status functions are built only for some custom OMAP2+ builds and are stubbed in header files for other builds under ifdef statements. But this results in adding new CONFIG_ARCH_OMAPXXX checks when SOCs are added in the future. So move them to a common place for OMAP2+ and make them 'weak' implementations. This way no new ifdefs would be required in the future and also cleans up the existing code. Signed-off-by: R Sricharan <r.sricharan@ti.com> [paul@pwsan.com: unsplit quoted strings; moved PRM functions to mach-omap2/prm_common.c; resolved sparse warnings] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-06-22ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm fileVishwanath BS
Since IO Daisychain modifies only PRM registers, it makes sense to move it to PRM File. Also changed the timeout value for IO chain enable to 100us and added a wait for status disable at the end. Thanks to Nishanth Menon <nm@ti.com> for contributing a fix to the timeout code waiting for WUCLKOUT to go high. Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Nishanth Menon <nm@ti.com> Reviewed-by: Rajendra Nayak <rnayak@ti.com> [paul@pwsan.com: renamed omap3_trigger_io_chain() to better describe the end result and to match other PRM functions; removed omap3_disable_io_chain(); moved MAX_IOPAD_LATCH_TIME to prcm-common as it will also be used by the OMAP4 code; removed unnecessary barrier; added kerneldoc; added credit for fix from Nishanth] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-06-22ARM: OMAP2+: PRM: fix compile for OMAP4-only buildKevin Hilman
For OMAP4 only builds, the omap2_prm_* functions have dummy wrappers to detect incorrect usage. However, several unrelated omap3 PRM functions have made it inside the #else clause of the #ifdef wrapping the omap2_prm stubs, causing them to disappear on OMAP4-only builds. This was unnoticed until the IO chain support was added and introduced a new function in this section which is referenced by omap_hwmod.c: arch/arm/mach-omap2/omap_hwmod.c: In function '_reconfigure_io_chain': arch/arm/mach-omap2/omap_hwmod.c:1665:3: error: implicit declaration of function 'omap3xxx_prm_reconfigure_io_chain' [-Werror=implicit-function-declaration] Fix by using the #ifdef to only wrap the omap2_prm functions that need stubs on OMAP4-only builds. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@ti.com> [paul@pwsan.com: fixed checkpatch warnings for patch description] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-12-16ARM: OMAP: PRCM: add suspend prepare / finish supportTero Kristo
PRCM chain handler needs to disable forwarding of interrupts during suspend, because runtime PM is disabled and most of the drivers are potentially not able to handle interrupts coming at this time. This patch masks all the PRCM interrupt events if a PRCM interrupt occurs during suspend, but does not ack them. Once suspend finish is called, all the masked events will be re-enabled, which causes immediate PRCM interrupt and handles the postponed event. The suspend prepare and complete callbacks will be called from pm34xx.c / pm44xx.c files in the following patches. The functions defined in this patch should eventually be moved to suspend->prepare and suspend->finish driver hooks, once the PRCM chain handler will be made as its own driver. Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Tested-by: Kevin Hilman <khilman@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> [paul@pwsan.com: add kerneldoc, add omap_prcm_irq_setup.saved_mask, add fn ptrs for save_and_clear_irqen() and restore_irqen()] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-12-16ARM: OMAP3/4: PRM: add functions to read pending IRQs, PRM barrierPaul Walmsley
Add PRM functions to test for pending PRM IRQs. This will be used in a subsequent patch to implement the PRM interrupt handler on the MPU. Add PRM functions to ensure that all outstanding writes from the MPU to the PRM IP block have completed before continuing execution. This will be used in a subsequent patch to ensure that all PRM interrupt status bits are cleared in the hardware before exiting the ISR. Normally we would not expose such a low-level function to other code. But the current implementation of the PRM interrupt code, which uses the generic IRQ chip code, doesn't give us a choice. The pending PRM IRQ functions are based on code originally written by Tero Kristo <t-kristo@ti.com>. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com>
2011-09-15OMAP2+: PRM: add register access functions for VC/VPKevin Hilman
On OMAP3+, the voltage controller (VC) and voltage processor (VP) are inside the PRM. Add some PRM helper functions for register access to these module registers. Thanks to Nishanth Menon for finding/fixing a sparse problem. Cc: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15OMAP2+: add PRM VP functions for checking/clearing VP TX done statusKevin Hilman
Add SoC specific PRM VP helper functions for checking and clearing the VP transaction done status. Longer term, these events should be handled by the forthcoming PRCM interrupt handler. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-10OMAP2+: hwmod: use status bit info for reset lineomar ramirez
On OMAP2 and OMAP3 the reset ctrl shift doesn't match the status bit, as it does on OMAP4, when handling the reset lines. This patch adds a new member in the reset info structure, so now it can be added as part of hwmod data, and checked accordingly for OMAP2 or 3; otherwise, there could be cases when the shift masks doesn't match both of the registers, and a successful reset might throw an error message or vice versa. Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com> [paul@pwsan.com: added a warning if st_shift used on OMAP4; renamed 'r' variable; improved some documentation] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-01-07omap2plus: prm: Trvial build break fix for undefined reference to ↵Santosh Shilimkar
'omap2_prm_read_mod_reg' omap2plus_defocnfig build breaks when customised with only ARCH_OMAP4 selected. This is because common files make references to the functions which are defined only for omap2xxx and omap3xxx. LD .tmp_vmlinux1 arch/arm/mach-omap2/built-in.o: In function `pm_dbg_regset_store': arch/arm/mach-omap2/pm-debug.c:335: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/built-in.o: In function `omap2_pm_dump': arch/arm/mach-omap2/pm-debug.c:121: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/pm-debug.c:123: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/pm-debug.c:124: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/pm-debug.c:125: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/built-in.o: In function `omap_prcm_arch_reset': arch/arm/mach-omap2/prcm.c:106: undefined reference to `omap2_prm_set_mod_reg_bits' arch/arm/mach-omap2/prcm.c:108: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/built-in.o: In function `omap_prcm_get_reset_sources': arch/arm/mach-omap2/prcm.c:53: undefined reference to `omap2_prm_read_mod_reg' arch/arm/mach-omap2/built-in.o: In function `clkdm_clear_all_wkdeps': arch/arm/mach-omap2/clockdomain.c:545: undefined reference to `omap2_prm_clear_mod_reg_bits' arch/arm/mach-omap2/built-in.o: In function `clkdm_del_wkdep': arch/arm/mach-omap2/clockdomain.c:475: undefined reference to `omap2_prm_clear_mod_reg_bits' arch/arm/mach-omap2/built-in.o: In function `clkdm_read_wkdep': arch/arm/mach-omap2/clockdomain.c:511: undefined reference to `omap2_prm_read_mod_bits_shift' arch/arm/mach-omap2/built-in.o: In function `clkdm_add_wkdep': arch/arm/mach-omap2/clockdomain.c:440: undefined reference to `omap2_prm_set_mod_reg_bits' make: *** [.tmp_vmlinux1] Error 1 This patch adds stubs for these functions so that build continues to work. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2010-12-21OMAP2/3: PRM/CM: prefix OMAP2 PRM/CM functions with "omap2_"Paul Walmsley
Now that OMAP4-specific PRCM functions have been added, distinguish the existing OMAP2/3-specific PRCM functions by prefixing them with "omap2_". This patch should not result in any functional change. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Jarkko Nikula <jhnikula@gmail.com> Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Rajendra Nayak <rnayak@ti.com>
2010-12-21OMAP2/3: PRCM: split OMAP2/3-specific PRCM code into OMAP2/3-specific filesPaul Walmsley
In preparation for adding OMAP4-specific PRCM accessor/mutator functions, split the existing OMAP2/3 PRCM code into OMAP2/3-specific files. Most of what was in mach-omap2/{cm,prm}.{c,h} has now been moved into mach-omap2/{cm,prm}2xxx_3xxx.{c,h}, since it was OMAP2xxx/3xxx-specific. This process also requires the #includes in each of these files to be changed to reference the new file name. As part of doing so, add some comments into plat-omap/sram.c and plat-omap/mcbsp.c, which use "sideways includes", to indicate that these users of the PRM/CM includes should not be doing so. Thanks to Felipe Contreras <felipe.contreras@gmail.com> for comments on this patch. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Jarkko Nikula <jhnikula@gmail.com> Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Omar Ramirez Luna <omar.ramirez@ti.com> Acked-by: Omar Ramirez Luna <omar.ramirez@ti.com> Cc: Felipe Contreras <felipe.contreras@gmail.com> Acked-by: Felipe Contreras <felipe.contreras@gmail.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Rajendra Nayak <rnayak@ti.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>