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* sh: pfc: Convert from ctrl_xxx() to __raw_xxx() I/O routines.Paul Mundt2009-11-29
| | | | | | | | Now that the PFC code is exposed for other architectures, use the common __raw_xxx() routines instead of the ctrl_xxx() ones. This will be needed for ARM-based SH-Mobiles amongst others. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Improve kfr2r09 serial port setup codeMagnus Damm2009-11-29
| | | | | | | | | | This patch improves the serial port communication quality of port YC401 on the KFR2R09 board. With this fix serial console is fine at 115200 - up and down keys now work as expected. Thanks to Hirohide Yamasaki for this fix. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Break out SuperH PFC codeMagnus Damm2009-11-29
| | | | | | | | | | | | | This file breaks out the SuperH PFC code from arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h to drivers/sh/pfc.c + include/linux/sh_pfc.h. Similar to the INTC stuff. The non-SuperH specific file location makes it possible to share the code between multiple architectures. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move KEYSC header fileMagnus Damm2009-11-29
| | | | | | | | | This patch moves the KEYSC header file from the SuperH specific asm directory to a place where it can be shared by multiple architectures. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_fileAlexey Dobriyan2009-11-29
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add CPG save/restore code for sh7724 R-standbyMagnus Damm2009-11-29
| | | | | | | | | Add sh7724 code to save and restore CPG state during R-standby. Only CPG registers IRDACLKCR and SPUCLKCR require software save and restore. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add SDHI power control support to EcovecMagnus Damm2009-11-29
| | | | | | | | | This patch adds support for SDHI power control to the Ecovec board. Platform data and power control callbacks for SDHI0 and SDHI1 are added. Power is by default off. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* mfd: Add power control platform data to SDHI driverMagnus Damm2009-11-29
| | | | | | | | | | This patch adds platform data with a function for power control to the SDHI driver. The idea is that board specific code can provide their own functions so power can be enabled and disabled for the sd-cards. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: mach-ecovec24: modify address mapKuninori Morimoto2009-11-29
| | | | | | | | ecovec24 board expect address map 2 instead of map 1 Signed-off-by: Mizukawa Tatsuo <mizukawa.tatsuo@renesas.com> Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* serial: sh-sci: Depend on HAVE_CLK unconditionally.Paul Mundt2009-11-25
| | | | | | | | | | | | | The sh-sci code conditionalized the clock framework support in order to give the other platforms a chance to catch up. sh64 supported this some time ago and the forthcoming ARM changes handle this as well, this leaves h8300 as the odd one out. H8300 has had since 2.5 to merge it's sh-sci support upstream, and has yet to do so. At this point I will no longer be holding back the driver to support an unreponsive architecture, 7 years is quite enough of a grace period. Support is easily implemented on the architecture if and when it ever decides to merge its changes upstream. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up the FPU emulation build.Paul Mundt2009-11-24
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* serial: sh-sci: don't use __devexit_p to wrap sci_removeUwe Kleine-König2009-11-24
| | | | | | | | | | The function sci_remove is defined without any section modifier, so don't use __devexit_p to wrap it. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Magnus Damm <damm@opensource.se> Cc: linux-kernel@vger.kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* rtc: don't use __exit_p to wrap ds1302_rtc_removeUwe Kleine-König2009-11-24
| | | | | | | | | | | | The function ds1302_rtc_remove is defined using __devexit, so don't use __exit_p but __devexit_p to wrap it. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: linux-kernel@vger.kernel.org Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: rtc-linux@googlegroups.com Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Apply the sleazy FPU changes for SH-2A FPU as well.Paul Mundt2009-11-24
| | | | | | This plugs in the fpu_counter manipulation for the SH-2A side also. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Minor optimisations to FPU handlingStuart Menefy2009-11-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | A number of small optimisations to FPU handling, in particular: - move the task USEDFPU flag from the thread_info flags field (which is accessed asynchronously to the thread) to a new status field, which is only accessed by the thread itself. This allows locking to be removed in most cases, or can be reduced to a preempt_lock(). This mimics the i386 behaviour. - move the modification of regs->sr and thread_info->status flags out of save_fpu() to __unlazy_fpu(). This gives the compiler a better chance to optimise things, as well as making save_fpu() symmetrical with restore_fpu() and init_fpu(). - implement prepare_to_copy(), so that when creating a thread, we can unlazy the FPU prior to copying the thread data structures. Also make sure that the FPU is disabled while in the kernel, in particular while booting, and for newly created kernel threads, In a very artificial benchmark, the execution time for 2500000 context switches was reduced from 50 to 45 seconds. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Improve performance of SH4 versions of copy/clear_user_highpageStuart Menefy2009-11-24
| | | | | | | | | | | | | | | | | | | | The previous implementation of clear_user_highpage and copy_user_highpage checked to see if there was a D-cache aliasing issue between the user and kernel mappings of a page, but if there was they always did a flush with writeback on the dirtied kernel alias. However as we now have the ability to map a page into kernel space with the same cache colour as the user mapping, there is no need to write back this data. Currently we also invalidate the kernel alias as a precaution, however I'm not sure if this is actually required. Also correct the definition of FIX_CMAP_END so that the mappings created by kmap_coherent() are actually at the correct colour. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'master' into sh/st-integrationPaul Mundt2009-11-24
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| * Merge branch 'sh/stable-updates'Paul Mundt2009-11-17
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| * | sh: dma: Kill off bogus dma_sysclass symbol export.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | | | | This is a static symbol, so the export is wholly superfluous. Recent kbuild updates flagged this as an error, resulting in build failure, so this tidies that up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh64: Fix up reworked cache op build.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | | | | This gets the build fixed up for the sh64 cache enabled case. Disabling still needs further abstraction for independent I/D-cache disabling. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh64: Fix up the CONFIG_GENERIC_BUG=n build.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | sh64 doesn't use GENERIC_BUG, which presently causes the handle_BUG() code to blow up. Fix up the dependencies and get it all building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Use the generic I/O port base for slowdown.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | | | | This fixes up the build and behaviour for various configurations. Namely the CONFIG_32BIT cases where legacy mappings do not exist, as well as the sh64 build. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Fix up the CONFIG_PERF_EVENTS=n build for SH-4.Paul Mundt2009-11-12
| | | | | | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Enable PMB support for all SH-4A CPUs.Paul Mundt2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | Presently the PMB options were limited to a number of CPUs they were tested with, but it is generally available on all SH-4A CPUs, so just drop the subtype conditionals. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: perf events: Document SH-4A raw event codes.Paul Mundt2009-11-09
| | | | | | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | Merge branch 'sh/stable-updates'Paul Mundt2009-11-08
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| * | | sh: oprofile: Fix up count size mismatch for common impl.Paul Mundt2009-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reduces the 'count' size in the common support structure to 32-bits so that it matches up with what oprofile is expecting. The SH7750 code was using a nasty oprofilefs hack to expose the 48-bit counter, although no other implementations were. Now that the offending driver has been killed off, it's possible to restore some semblance of sanity. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: oprofile: Kill off bitrotted SH7750 driver.Paul Mundt2009-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This kills off the old SH7750 oprofile driver, preferring perf instead. As this driver has a number of bugs that no one seems to have noticed, it's safe to kill this off now rather than providing an extended transition period. The old oprofile framework is still kept in place for now, primarily to give out-of-tree drivers a chance to transition off. But this too will be killed off in short order. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: perf events: Add support for SH7750-style counters.Paul Mundt2009-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds perf events support for the SH7750/SH7750S/SH7091 performance counters. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: perf events: Preliminary callchain support.Paul Mundt2009-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This implements preliminary support for perf callchains (at the moment only the kernel side is implemented). The actual implementation itself is just a simple wrapper around the unwinder API, which allows for callchain generation with or without the dwarf unwinder. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: Default-enable SPU clock for SH7724.Paul Mundt2009-11-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wanted by the SPU2 UIO driver, which really ought to be handling this itself. Default enable it for now, until the driver gets a bit more intelligent. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: sh7724: Add SPU2 supportKuninori Morimoto2009-11-04
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: perf events: Fix up uninitialized variable warning.Paul Mundt2009-11-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'config' can be unintialized, and although it's not really an error, it still manages to trigger the -Werror with certain toolchains. Initialize it early to shut up gcc. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | Merge branch 'master' of ↵Paul Mundt2009-11-04
| |\ \ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * | | | video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists.Paul Mundt2009-11-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More aggressive DMA mapping debugging has uncovered a long-standing buglet in the way that the sh_mobile_lcdcfb driver implements its deferred I/O callback. When used as a console driver the acceleration routines are called by the kernel which subsequently cause the deferred I/O work to be scheduled, resulting in the deferred I/O callback being entered without any dirty pages on the pagelist (the normal case for userspace accesses). It's also possible to get in to this situation via explicit calling of fsync() when nothing has dirtied the region. Unfortunately it's not sufficient to skip over the callback when the pagelist is empty given the console driver use case, so instead the callback has to conditionalize the work for panel updates and DMA mapping depending on whether anything is resident on the pagelist or not. Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Make sure indexes are positiveRoel Kluin2009-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The indexes are signed, make sure they are not negative when we read array elements. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add RWDT save/restore code for sh7724 R-standbyMagnus Damm2009-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add sh7724 code to save and restore RWDT state during R-standby. Without this patch the watchdog will generate a reset shortly after resuming from R-standby. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: mach-se: Convert SE7722 FPGA to dynamic IRQ allocation.Paul Mundt2009-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This gets rid of the arbitrary set of vectors used by the SE7722 FPGA interrupt controller and witches over to a completely dynamic set. No assumptions regarding a contiguous range are made, and the platform resources themselves need to be filled in lazily. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: intc: Handle legacy IRQ reservation in vector map.Paul Mundt2009-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Different CPUs will have different starting vectors, with varying amounts of reserved or unusable vector space prior to the first slot. This introduces a legacy vector reservation system that inserts itself in between the CPU vector map registration and the platform specific IRQ setup. This works fine in practice as the only new vectors that boards need to establish on their own should be dynamically allocated rather than arbitrarily assigned. As a plus, this also makes all of the converted platforms sparseirq ready. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Remove unused WP signal for SDHI0 and KFR2R09Magnus Damm2009-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get rid of the unused WP signal for SDHI0 on KFR2R09. This because yc304 on KFR2R09 is a Micro SD slot which does not implement the WP signal. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add SDHI1 support to the AP325RXA boardMagnus Damm2009-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the SDHI platform data for the AP325RXA board to include support for the CN7 Micro SD Card slot. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: intc: dynamic IRQ support.Paul Mundt2009-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for dynamic IRQ allocation/deallocation for all parts using the SH-style vectored IRQs. While this is not inherently INTC-specific, the INTC code is the main tie-in for vectored IRQ registration, and is the only place that a full view of the utilized vector map is possible. The implementation is fairly straightforward, implementing a flat IRQ map where each registered vector is reserved, allowing us to scan for holes and dynamically wire up IRQs lazily later on in the boot stage. This piggybacks on top of sparseirq in order to make the best use of the available vector space. Dynamic IRQs can be used for any number of things, ranging from MSI in the SH-X3 PCIe case down to demux vectors for board FPGAs and system controllers that presently allocate an arbitrary range. In the latter case, this also allows those platforms to use sparseirq without blowing up, which brings us one step closer to enabling sparseirq as the default for all platform and CPU combinations. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add KFR2R09 specific memory pre/post R-standby codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add R-standby support to the KFR2R09 sdram code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add R-standby sleep mode supportMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add R-standby specific bits to the SuperH Mobile sleep code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Use RSMEM for sleep code on sh7724Magnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use RSMEM instead of ILMEM for sleep mode code storage on SH7724. This allows us to use R-standby mode on SH7724. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add MMU and Cache handling sleep mode codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add MMU and cache handling functionality to the SuperH Mobile sleep code. The MMU and cache registers are saved and restored. The MMU is disabled and the cache is flushed and disabled before entering sleep modes if the SUSP_SH_MMU flag is set. This flag should be set in the case of R-standby and most likely for future U-standby support as well. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Keep track of allowed sleep modesMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add code to keep track of supported sleep modes. This to only export cpuidle modes that are backed by board support code. Also, do not allow suspend-to-ram if sdram board code is missing. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Rework SuperH Mobile sleep mode codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rework the SuperH Mobile sleep code from including board specific code to allowing each board to provide pre/post code snippets. These snippets should contain sdram management code to enter and leave self-refresh. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add Ecovec24 specific memory pre/post sleep codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add self-refresh handling code for the Ecovec24 board. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | sh: Add ap325rxa specific memory pre/post sleep codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add self-refresh handling code for the AP325RXA board. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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