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2009-02-08[ARM] omap: spi: arrange for omap_uwire to use connection IDRussell King1-0/+1
... 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>
2009-02-08[ARM] omap: w1: convert omap HDQ clocks to match by devid and conidRussell King2-4/+4
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: i2c: remove conditional ick clocksRussell King1-0/+1
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>
2009-02-08[ARM] omap: i2c: use short connection idsRussell King3-14/+14
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: mcbsp: convert to use fck/ick clocks directlyRussell King7-123/+100
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>
2009-02-08[ARM] omap: mcspi: new short connection id namesRussell King2-14/+14
... rather than the clock names themselves. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: MMC: provide a dummy ick for OMAP1Russell King1-0/+2
Eliminate the OMAP1 vs OMAP2 clock knowledge in the MMC driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: MMC: convert clocks to match by devid and conidRussell King2-4/+4
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>
2009-02-08[ARM] omap: watchdog: provide a dummy ick for OMAP1Russell King1-0/+2
Eliminate the OMAP1 vs OMAP2 clock knowledge in the watchdog driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: watchdog: convert clocks to match by devid and conidRussell King3-5/+5
This eliminates the need for separate OMAP24xx and OMAP34xx clock requesting code sections. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: provide a dummy clock nodeRussell King1-0/+20
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>
2009-02-08[ARM] omap: remove pre-CLKDEV clk_get/clk_putRussell King1-46/+0
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: convert OMAP3 to use clkdevRussell King4-456/+331
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: convert OMAP2 to use clkdevRussell King4-337/+218
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: convert OMAP1 to use clkdevRussell King6-160/+145
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: allow double-registering of clocksRussell King1-0/+6
This stops things blowing up if a 'struct clk' to be passed more than once to clk_register(), which will be required when we decouple struct clk's from their names. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: ensure devname is set for dummy devicesRussell King1-0/+1
This is needed to use these with the clkdev helpers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: handle RATE_CKCTL via .set_rate/.round_rate methodsRussell King3-64/+72
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>
2009-02-08[ARM] omap: move propagate_rate() calls into generic omap clock codeRussell King7-40/+11
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>
2009-02-08[ARM] omap: remove unnecessary calls to propagate_rate()Russell King1-8/+1
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>
2009-02-08[ARM] omap: move clock propagation into core omap clock codeRussell King3-10/+5
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>
2009-02-08[ARM] omap: provide a standard clk_get_parent() implementationRussell King2-13/+1
which only has to return clk->parent. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: remove clk_deny_idle and clk_allow_idleRussell King3-42/+0
Nothing makes any use of these functions, so there's little point in providing them. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: rearrange clock.h structure orderRussell King1-9/+9
... to eliminate unnecessary padding. We have rather a lot of these structures, so eliminating unnecessary padding results in a saving of 1488 bytes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: remove clk->ownerRussell King2-6/+2
clk->owner is always NULL, so its existence doesn't serve any useful function other than bloating the kernel by 992 bytes. Remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: don't use clkops_omap2_dflt_wait for non-ICLK/FCLK clocksRussell King3-17/+15
The original code in omap2_clk_wait_ready() used to check the low 8 bits to determine whether they were within the FCLKEN or ICLKEN registers. Specifically, the test is satisfied when these offsets are used: CM_FCLKEN, CM_FCLKEN1, CM_CLKEN, OMAP24XX_CM_FCLKEN2, CM_ICLKEN, CM_ICLKEN1, CM_ICLKEN2, CM_ICLKEN3, OMAP24XX_CM_ICLKEN4 OMAP3430_CM_CLKEN_PLL, OMAP3430ES2_CM_CLKEN2 If one of these offsets isn't used, omap2_clk_wait_ready() merely returns without doing anything. So we should use the non-wait clkops version instead and eliminate that conditional. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: eliminate unnecessary conditionals in omap2_clk_wait_readyRussell King4-32/+35
Rather than employing run-time tests in omap2_clk_wait_ready() to decide whether we need to wait for the clock to become ready, we can set the .ops appropriately. This change deals with the OMAP24xx and OMAP34xx conditionals only. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: add default .ops to all remaining OMAP2 clocksRussell King4-14/+271
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: kill PARENT_CONTROLS_CLOCKRussell King4-111/+114
PARENT_CONTROLS_CLOCK just makes enable/disable no-op, and is functionally an alias for ALWAYS_ENABLED. This can be handled in the same way, using clkops_null. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-08[ARM] omap: provide a NULL clock operations structureRussell King7-93/+135
... 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>
2009-02-02[ARM] omap: introduce clock operations structureRussell King8-133/+115
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>
2009-02-02[ARM] omap: remove VIRTUAL_CLOCKRussell King3-7/+4
Nothing tests the clock flags for this bit, so it serves no purpose. Remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-01Merge branch 'omap-fixes' of ↵Russell King110-3192/+4489
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
2009-01-31rename platform_driver name "flash" to "sa1100-mtd"Uwe Kleine-König1-1/+1
"flash" is a very generic name for a platform_driver that is only available on SA11x0. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Nicolas Pitre <nico@marvell.com>
2009-01-31annotate that [fp, #-4] is the saved lrUwe Kleine-König1-1/+1
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2009-01-31Use __SPIN_LOCK_UNLOCKED to initialize bad_irq_desc.lockUwe Kleine-König1-1/+1
SPIN_LOCK_UNLOCKED is deprecated as lockdep cannot properly work with locks initialized with it. This fix is necessary to compile the linux-rt tree for ARM. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Steven Rostedt <srostedt@redhat.com>
2009-01-29ARM: OMAP: fix fault in enter_full_retention()Kevin Hilman1-2/+1
In omap24xx_cpu_suspend assembly routine, the r2 register which holds the address of the SDRC_POWER reg is set to zero before the value is written back triggering a fault due to writing to address zero. It's hard to tell where this change was introduced since this file has been moved and merged. While this fix prevents a crash, suspend on my n810 is broken with current kernels. I never come out of suspend. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: Mask interrupts when disabling interrupts, v2김규원1-0/+1
By Ingo Molnar, interrupts are not masked by default. (refer to 76d2160147f43f982dfe881404cfde9fd0a9da21) But if interrupts are not masked, the processor can wake up while in Suspend-to-RAM state by an external interrupt. For example, if an OMAP3 board is connected to Host PC by USB and entered to Suspend-to-RAM state, it wake up automatically by M_IRQ_92. The disable_irq() function can't disable the interrupt in H/W level, So I modified arch/arm/mach-omap2/irq.c Signed-off-by: Kim Kyuwon <chammoru@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: gptimer min_delta_ns correctedAaro Koskinen1-1/+2
When 32 kHz timer is used the min_delta_ns should be initialized so that it reflects the timer programming cost. A write to the timer device will be usually posted, but it takes roughly 3 cycles before it is effective. If the timer is reprogrammed before that, the CPU will stall until the previous write completes. This was pointed out by Richard Woodruff. Since the lower bound for min_delta_ns is 1000, the change is visible only with tick rates less than 3 MHz. Also note that the old value is incorrect for 32 kHz also due to a rounding error, and it can cause the timer queue to hang (due to clockevent code trying to program the timer with zero ticks). Signed-off-by: Aaro Koskinen <Aaro.Koskinen@nokia.com> Reviewed-by: Richard Woodruff <r-woodruff2@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: Fix hsmmc init, v2Tony Lindgren4-12/+18
The naming accidentally broke while changing the name for the driver to not to conflict with the other mmc driver. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: Fix omap34xx revision detection for ES3.1Tony Lindgren2-1/+6
Fix omap34xx revision detection for ES3.1 Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: DMA: Fix uninitialized channel flagsJarkko Nikula1-0/+1
This has similar symptoms than 66c23551b1b774e2be3c7bdf91c0ebf2c7a3519e where just omap_request_dma, omap_dma_link_lch and omap_dma_unlink_lch can cause incorrect dump_stack(). Here it can happen if channel has been used before and the channel flags variable holds old status. Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: Fix race in OMAP2/3 DMA IRQ handlingJuha Yrjola1-2/+2
CSR must be cleared before invoking the callback. If the callback function starts a new, fast DMA transfer on the same channel, the completion status might lost if CSR is cleared after the callback invocation. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29ARM: OMAP: Fix McBSP spin_lock deadlockStanley.Miao4-223/+78
A spin_lock deadlock will occur when omap_mcbsp_request() is invoked. omap_mcbsp_request() \- clk_enable(mcbsp->clk) [takes and holds clockfw_lock] \- omap2_clk_enable() \- _omap2_clk_enable() \- omap_mcbsp_clk_enable() \- clk_enable(child clock) [tries for clockfw_lock again] mcbsp_clk is a virtual clock and it comprises several child clocks. when enable mcbsp_clk in omap_mcbsp_request(), the enable function of mcbsp_clk will enable its child clocks, then the deadlock occurs. The solution is to remove the virtual clock and enable these child clocks in omap_mcbsp_request() directly. Signed-off-by: Stanley.Miao <stanley.miao@windriver.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-28Merge branch 'merge' of ↵Linus Torvalds84-1920/+4343
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup code powerpc/pseries: Correct VIO bus accounting problem in CMO env. powerpc: More printing warning fixes for the l64 to ll64 conversion powerpc: Remove arch/ppc cruft from Kconfig powerpc: Printing fix for l64 to ll64 conversion: phyp_dump.c powerpc/embedded6xx: Update defconfigs powerpc/8xx: Update defconfigs powerpc/86xx: Update defconfigs powerpc/83xx: Update defconfigs powerpc/85xx: Update defconfigs powerpc/mpc8313erdb: fix kernel panic because mdio device is not probed powerpc/4xx: Update multi-board PowerPC 4xx defconfigs powerpc/44x: Update PowerPC 44x defconfigs powerpc/40x: Update PowerPC 40x defconfigs powerpc/85xx: Fix typo in mpc8572ds dts powerpc/44x: Warp patches for the new NDFC driver powerpc/4xx: DTS: Add Add'l SDRAM0 Compatible and Interrupt Info
2009-01-28[ARM] 5366/1: fix shared memory coherency with VIVT L1 + L2 cachesNicolas Pitre1-1/+4
When there are multiple L1-aliasing userland mappings of the same physical page, we currently remap each of them uncached, to prevent VIVT cache aliasing issues. (E.g. writes to one of the mappings not being immediately visible via another mapping.) However, when we do this remapping, there could still be stale data in the L2 cache, and an uncached mapping might bypass L2 and go straight to RAM. This would cause reads from such mappings to see old data (until the dirty L2 line is eventually evicted.) This issue is solved by forcing a L2 cache flush whenever the shared page is made L1 uncacheable. Ideally, we would make L1 uncacheable and L2 cacheable as L2 is PIPT. But Feroceon does not support that combination, and the TEX=5 C=0 B=0 encoding for XSc3 doesn't appear to work in practice. Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-01-28Merge branch 'for-linus' of ↵Linus Torvalds12-1031/+37
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: fix 5329 ColdFire periphal addressing uclinux: add process name to allocation error message m68knommu: correct the mii calculations for 532x ColdFire FEC m68knommu: add ColdFire M532x to the FEC configuration options m68knommu: fix syscall restarting m68knommu: remove the obsolete and long unused comempci chip support m68knommu: remove the no longer used PCI support option m68knommu: remove obsolete and unused eLIA board m68knommu: set NO_DMA m68knommu: fix cache flushing for the 527x ColdFire processors m68knommu: fix ColdFire 5272 serial baud rates in mcf.c m68knommu: use one exist from execption
2009-01-28[ARM] call undefined instruction exception handler with irqs enabledRussell King1-0/+1
Aaro says: > With spinlock debugs enabled I get might_sleep() warnings when using > ptrace. tracked down to a missing enable_irq before calling do_undefinstr(). Reported-by: Aaro Koskinen <aaro.koskinen@nokia.com> Tested-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-01-28[ARM] msm: fix build errorsRussell King1-0/+1
arch/arm/mach-msm/board-halibut.c:45: error: implicit declaration of function 'MSM_GPIO_TO_INT' arch/arm/mach-msm/board-halibut.c:45: error: initializer element is not constant arch/arm/mach-msm/board-halibut.c:45: error: (near initialization for 'smc91x_resources[1].start') arch/arm/mach-msm/board-halibut.c:46: error: initializer element is not constant arch/arm/mach-msm/board-halibut.c:46: error: (near initialization for 'smc91x_resources[1].end') Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-01-28powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup codeGerhard Pircher1-3/+3
_PAGE_COHERENT is now always set in _PAGE_RAM resp. PAGE_KERNEL. Thus it has to be masked out, if the BAT mapping should be non cacheable or CPU_FTR_NEED_COHERENT is not set. This will work on normal SMP setups because we force-set CPU_FTR_NEED_COHERENT as part of CPU_FTR_COMMON on SMP. Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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