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path: root/arch/arm/mach-omap1/clock.c
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* ARM: 6483/1: arm & sh: factorised duplicated clkdev.cJean-Christop PLAGNIOL-VILLARD2010-11-26
| | | | | | | | | | | | | factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* OMAP1: clock: some cleanupPaul Walmsley2010-07-26
| | | | | | | | | | | Convert most of the magic numbers in mach-omap1/clock_data.c to use macros. Clean up a few comments to conform with Documentation/CodingStyle. Mark the current clkops_uart as being OMAP16xx-only, and add some comments to indicate that it does not belong there, for future cleanup. This patch should not cause any functional changes. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP1 clock: fix section mismatch on clk_initFelipe Balbi2010-05-20
| | | | | | | | remove the section annotation from omap1_clk_disable_unused() to kill the section mismatch warning. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP4: clock: Add dummy clock nodes for interface clocksSantosh Shilimkar2010-02-24
| | | | | | | | | | | | | | | | On OMAP4 platform the iclk control is completly under hardware control and no software control is available. This difference w.r.t previous OMAP's needs all the common driver accross OMAP's , cpu_is_xxxx() checks. To avoid poulluting the drivers dummy clock nodes are created (The autogeneration script has been updated accordingly). Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Benoit Cousson <b-cousson@ti.com> [paul@pwsan.com: made OMAP1 dummy_ck common and edited patch to reuse that] Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP clock: drop RATE_FIXED clock flagPaul Walmsley2010-02-24
| | | | | | | | | | | | | | | | | | The RATE_FIXED clock flag is pointless. In the OMAP1 clock code, it simply causes the omap1_clk_round_rate() function to return the current rate of the clock. omap1_clk_round_rate(), however, should never be called for a fixed-rate clock, since none of these clocks have a .round_rate function pointer set in their struct clk records. Similarly, in the OMAP2+ clock code, the RATE_FIXED flag just causes the clock code to emit a warning if the OMAP clock maintainer was foolish enough to add a .round_rate function pointer to a fixed-rate clock. "Doctor, it hurts when I pretend that a fixed-rate clock is rate-changeable." "Then don't pretend that a fixed-rate clock is rate-changeable." It has no functional value. This patch drops the RATE_FIXED clock flag, removing it from all clocks that are so marked. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Richard Woodruff <r-woodruff2@ti.com>
* OMAP1 clock: convert armwdt_ck to use the fixed divisor recalc functionPaul Walmsley2010-01-26
| | | | | | | The armwdt_ck clock uses a fixed divisor, so it can use the OMAP clock fixed divisor recalculation code, rather than a custom function. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP1 clock: fix for "BUG: spinlock lockup on CPU#0"Paul Walmsley2010-01-20
| | | | | | | | | | | | | Commit 52650505fbf3a6ab851c801f54e73e76c55ab8da caused clock initialization to fail on OMAP1 with "BUG: spinlock lockup on CPU#0" -- this is because omap1_select_table_rate() and omap1_round_to_table_rate() call clk_get_rate() with the clockfw spinlock held. Fix by accessing the rate directly from the internal clock framework functions. Thanks to Tony Lindgren <tony@atomide.com> for reporting and testing the fix. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Tony Lindgren <tony@atomide.com>
* OMAP1 clock: convert mach-omap1/clock.h to mach-omap1/clock_data.cPaul Walmsley2009-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | The OMAP1 clock code currently #includes a large .h file full of static data structures. Instead, define the data in a .c file. Russell King <linux@arm.linux.org.uk> proposed this new arrangement: http://marc.info/?l=linux-omap&m=125967425908895&w=2 This patch also deals with most of the flagrant checkpatch violations. While here, separate the mpu_rate data structures out into their own files, opp.h and opp_data.c. In the long run, these mpu_rate tables should be replaced with OPP code. Also includes a patch from Felipe Balbi <felipe.balbi@nokia.com> to mark omap1_clk_functions as __initdata to avoid a section warning: http://patchwork.kernel.org/patch/64366/ Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Felipe Balbi <felipe.balbi@nokia.com> Cc: Nishanth Menon <nm@ti.com>
* OMAP1 clock: convert test in disable_unused() to use ENABLE_ON_INITPaul Walmsley2009-12-11
| | | | | | | | | | | | mach-omap1/clock.c:omap1_clk_disable_unused() contains a test that assumes that the clock structures are available in the file's namespace. After a following patch, this will no longer be the case. So we need to reimplement that test. It turns out that we already have a facility in the clock framework to handle this case - the ENABLE_ON_INIT flag - used on OMAP2/3. Remove the offending test and mark the clocks that it was intended to catch as ENABLE_ON_INIT. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP1/2/3 clock: remove paranoid checks in preparation for ↵Paul Walmsley2009-12-11
| | | | | | | | | | | clock{,2xxx,3xxx}_data.c Some parts of the clock code took advantage of the fact that the statically allocated clock tree was in clock{,24xx,34xx}.c's local namespace to do some extra argument checks. These are overzealous and are more difficult to maintain when the clock tree is in a separate namespace, so, remove them. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* omap1: omap_udc: Add clocking and disable vbus sense for omap7xxCory Maccarrone2009-11-22
| | | | | | | | | | | | | | | | | | | | The l3_ocpi_ck clock is needed on omap7xx processors for USB. Additionally, bit 8 of the SOFT_REQ_REG needs to be enabled for the usb_dc_ck on omap7xx, which is a different bit than that of the omap16xx-defined clock of the same name. I added a provision for the usb_dc_ck and l3_ocpi_ck clocks as dc_clk and hhc_clk, respectively, for omap7xx CPUs. Additionally, I added a check in machine_without_vbus_sense for all omap7xx devices, as presently I know of no omap7xx-based devices that have vbus sense, and it made more sense to me to use a cpu check here than to spell out each machine one at a time. Finally, DMA is disabled for omap7xx, as it causes problems with these chips. Cc: linux-usb@vger.kernel.org Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap1: mmc: Add platform init for omap7xxCory Maccarrone2009-11-22
| | | | | | | | | | | | | | | | | | | | | | The MMC mux pins normally used by omap chips in devices.c are different from what is needed by omap7xx chips. This change adds a conditional around the mux setup code to enable the correct mux pins. The omap730 and omap850 both use a different clock for the "fck" clock of the MMC interface than other omap processors based on the SOFT_REQ_REG, pin 12. The "ick" clock is the same as that used by other omap processors. * Added the missing clock definition as mmc3_ck to clock.h * Added the clock definition to omap_clks in clock.c * Added CK_7XX to the mmci-omap.0 "ick" clock already in clock.c With these changes, it is now possible to initialize and use MMC cards with omap730 and omap850 devices. Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap: headers: Move remaining headers from include/mach to include/platTony Lindgren2009-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the remaining headers under plat-omap/include/mach to plat-omap/include/plat. Also search and replace the files using these headers to include using the right path. This was done with: #!/bin/bash mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" headers=$(cd $mach_dir_old && ls *.h) omap_dirs="arch/arm/*omap*/ \ drivers/video/omap \ sound/soc/omap" other_files="drivers/leds/leds-ams-delta.c \ drivers/mfd/menelaus.c \ drivers/mfd/twl4030-core.c \ drivers/mtd/nand/ams-delta.c" for header in $headers; do old="#include <mach\/$header" new="#include <plat\/$header" for dir in $omap_dirs; do find $dir -type f -name \*.[chS] | \ xargs sed -i "s/$old/$new/" done find drivers/ -type f -name \*omap*.[chS] | \ xargs sed -i "s/$old/$new/" for file in $other_files; do sed -i "s/$old/$new/" $file done done for header in $(ls $mach_dir_old/*.h); do git mv $header $plat_dir_new/ done Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP7XX: Clocks: Add ck_ref and armxorAngelo Arrifano2009-10-07
| | | | | | | | These clocks are required for booting. Signed-off-by: Angelo Arrifano <miknix@gmail.com> Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
* OMAP7XX: Rename all the rest of the omap730 references in omap1 coreAlistair Buxton2009-10-07
| | | | | | | | | | | This patch is part of a series which removes references to omap730 in code which is shared with omap850, replacing them with references to omap7xx. This updates all the remaining omap730 references in miscellaneous local variables, macros and similar. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
* OMAP7XX: Update core omap1 files to use omap7xx.hAlistair Buxton2009-10-07
| | | | | | | | This patch is part of a series which removes references to omap730 in code which is shared with omap850, replacing them with references to omap7xx. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
* OMAP7XX: Clocks: Add omap850 supportAlistair Buxton2009-10-07
| | | | | | | | | | | | This patch is part of a series which unifies all duplicated code between omap730 and omap850. All cpu checks are converted to cpu_is_omap7xx() and CONFIG_ARCH_OMAP850 is added to all CONFIG_ARCH_OMAP730 checks. This file had no omap850 specific code. Initial clock support was done in the Linwizard tree by Zebediah C. McClure. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
* OMAP2xxx clock: rename clk_init_one() to clk_preinit()Paul Walmsley2009-05-12
| | | | | | Rename clk_init_one() to clk_preinit() to distinguish its function from clk_init() and the individual struct clk init functions. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* [ARM] omap: fix omap1 clock usecount decrement bugRussell King2009-04-06
| | | | | | Same fix as per a7f8c59, but for OMAP1 instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: arrange for clock recalc methods to return the rateRussell King2009-02-14
| | | | | | | | | | | | | linux-omap source commit 33d000c99ee393fe2042f93e8422f94976d276ce introduces a way to "dry run" clock changes before they're committed. However, this involves putting logic to handle this into each and every recalc function, and unfortunately due to the caching, led to some bugs. Solve both of issues by making the recalc methods always return the clock rate for the clock, which the caller decides what to do with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: create a proper tree of clocksRussell King2009-02-08
| | | | | | | | | | | Traditionally, we've tracked the parent/child relationships between clk structures by setting the child's parent member to point at the upstream clock. As a result, when decending the tree, we have had to scan all clocks to find the children. Avoid this wasteful scanning by keeping a list of the clock's children. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: Fix omap1 clock issuesTony Lindgren2009-02-08
| | | | | | | | | | | | | | | | | | This fixes booting, and is a step toward fixing things properly: - Make enable_reg u32 instead of u16 [rmk: virtual addresses are void __iomem *, not u32] - Get rid of VIRTUAL_IO_ADDRESS for clocks - Use __raw_read/write instead of omap_read/write for clock registers This patch adds a bunch of compile warnings until omap1 clock also uses offsets. linux-omap source commit is 9d1dff8638c9e96a401e1885f9948662e9ff9636. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: spi: arrange for omap_uwire to use connection IDRussell King2009-02-08
| | | | | | | | ... which now means no driver requests the "armxor_ck" clock directly. Also, fix the error handling for clk_get(), ensuring that we propagate the error returned from clk_get(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: i2c: remove conditional ick clocksRussell King2009-02-08
| | | | | | | | | By providing a dummy ick for OMAP1510 and OMAP310, we avoid having SoC conditional clock information in i2c-omap.c. Also, fix the error handling by making sure we propagate the error returned via clk_get(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: i2c: use short connection idsRussell King2009-02-08
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: mcbsp: convert to use fck/ick clocks directlyRussell King2009-02-08
| | | | | | | | | | | | | Rather than introducing a special 'mcbsp_clk' with code behind it in mach-omap*/mcbsp.c to handle the SoC specifics, arrange for the mcbsp driver to be like any other driver. mcbsp requests its fck and ick clocks directly, and the SoC specific code deals with selecting the correct clock. There is one oddity to deal with - OMAP1 fiddles with the DSP clocks and DSP reset, so we move this to the two callback functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: MMC: provide a dummy ick for OMAP1Russell King2009-02-08
| | | | | | Eliminate the OMAP1 vs OMAP2 clock knowledge in the MMC driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: MMC: convert clocks to match by devid and conidRussell King2009-02-08
| | | | | | | | Convert OMAP MMC driver to match clocks using the device ID and a connection ID rather than a clock name. This allows us to eliminate the OMAP1/OMAP2 differences for the function clock. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: watchdog: provide a dummy ick for OMAP1Russell King2009-02-08
| | | | | | Eliminate the OMAP1 vs OMAP2 clock knowledge in the watchdog driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: watchdog: convert clocks to match by devid and conidRussell King2009-02-08
| | | | | | | This eliminates the need for separate OMAP24xx and OMAP34xx clock requesting code sections. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: provide a dummy clock nodeRussell King2009-02-08
| | | | | | | | By providing a dummy clock node, we can eliminate the SoC conditional clock handing in the OMAP drivers, moving this knowledge out of the driver and into the machine clock support code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: convert OMAP1 to use clkdevRussell King2009-02-08
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: handle RATE_CKCTL via .set_rate/.round_rate methodsRussell King2009-02-08
| | | | | | | | | | It makes no sense to have the CKCTL rate selection implemented as a flag and a special exception in the top level set_rate/round_rate methods. Provide CKCTL set_rate/round_rate methods, and use these for where ever RATE_CKCTL is used and they're not already overridden. This allows us to remove the RATE_CKCTL flag. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: move propagate_rate() calls into generic omap clock codeRussell King2009-02-08
| | | | | | | | | propagate_rate() is recursive, so it makes sense to minimise the amount of stack which is used for each recursion. So, rather than recursing back into it from the ->recalc functions if RATE_PROPAGATES is set, do that test at the higher level. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: remove unnecessary calls to propagate_rate()Russell King2009-02-08
| | | | | | | | | We've always called propagate_rate() in the parent function to the .set_rate methods, so there's no point having the .set_rate methods also call this heavy-weight function - it's mere duplication of what's happening elsewhere. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: move clock propagation into core omap clock codeRussell King2009-02-08
| | | | | | | | Move the clock propagation calls for set_parent and set_rate into the core omap clock code, rather than having these calls scattered throughout the OMAP1 and OMAP2 implementations. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: provide a NULL clock operations structureRussell King2009-02-08
| | | | | | | | ... and use it for clocks which are ALWAYS_ENABLED. These clocks use a non-NULL enable_reg pointer for other purposes (such as selecting clock rates.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: introduce clock operations structureRussell King2009-02-02
| | | | | | | Collect up all the common enable/disable clock operation functions into a separate operations structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'omap-all' into develRussell King2008-10-14
|\ | | | | | | | | | | | | Conflicts: arch/arm/mach-omap2/gpmc.c arch/arm/mach-omap2/irq.c
| * [ARM] omap: fix lots of 'Using plain integer as NULL pointer'Russell King2008-09-05
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: DSP registers don't need to be castedRussell King2008-09-05
| | | | | | | | | | | | | | We're now assigning/comparing void __iomem pointers with void __iomem pointer variables. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Convert asm/io.h to linux/io.hRussell King2008-09-06
|/ | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King2008-08-07
| | | | | | This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP1: Change the comments to C styleDavid Cohen2008-02-08
| | | | | | | Change the comments to C style Signed-off-by: David Cohen <david.cohen@indt.org.br> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: add SoSSI clockImre Deak2007-09-20
| | | | | | | | This is needed, so that disabling the SoSSI clock during idle can be prevented. Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: omap1510->15xx conversions needed for sx1Vladimir Ananiev2007-03-02
| | | | | | | Convert 1510->15xx in generic omap code, so that sx1 can work. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: Fix CONFIG_DEBUG_LLDirk Behme2007-03-02
| | | | | | | | | | | | | | Fix broken CONFIG_DEBUG_LL. In case of low level debugging reconfigure some clocks early. See http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=commitdiff;h=3bfb289ccc6c4624fd5ff0381546935e105f4093 too. Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: Fix warning in clock.cDirk Behme2007-03-02
| | | | | | | | | | | | Fix warning: arch/arm/mach-omap1/clock.c: In function 'omap1_clk_enable_generic': arch/arm/mach-omap1/clock.c:499: warning: 'return' with no value, in function returning non-void Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: correct misc 15xx and non-15xx platform codeAndrzej Zaborowski2007-03-02
| | | | | | | | | | | | | | | Disable accesses to SOFT_REQ_REG2 and ULPD_SOFT_DISABLE_REQ_REG registers for 15xx processors that don't have these registers. Enable level 2 interrupt handler for processors that identify as OMAP 15xx (e.g 310) and not 1510 specifically. Also fix the following compiler warning (only visible with CONFIG_OMAP_RESET_CLOCKS): arch/arm/mach-omap1/clock.c: In function 'omap1_clk_disable_unused': arch/arm/mach-omap1/clock.c:634: warning: 'return' with a value, in function returning void Signed-off-by: Andrzej Zaborowski <balrog@zabor.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: Sync clocks with linux-omap treeTony Lindgren2006-09-25
| | | | | | | Mostly clean up CONFIG_OMAP_RESET_CLOCKS. Also includes a patch from Imre Deak to make McSPI clocks use id. Signed-off-by: Tony Lindgren <tony@atomide.com>
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