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2009-10-29Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap4: Fix UART4 platform data on omap4 omap4: Allow omap_serial_early_init() for OMAP4430 board omap3: PM: enable UART3 module wakeups omap2: Fix console serial port number for n8x0 omap2: Fix detection of n8x0 omap1: Fix DSP public peripherals support for ams-delta omap1: Fix redundant UARTs pin muxing that can break other hardware support omap: iommu: fix wrong condition check for SUPERSECTION omap: SDMA: Fix omap_stop_dma() API for channel linking omap: Fix omap-keypad by restoring old keypad.h without breaking omap2 boards that use matrix_keypad
2009-10-22omap4: Fix UART4 platform data on omap4Santosh Shilimkar
This patch removes the unnecessary UART4 platform which is under data is wrong because of this There is a separate platform structure for UART4 Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-By: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap4: Allow omap_serial_early_init() for OMAP4430 boardSantosh Shilimkar
This patch enables omap_serial_early_init() function for OMAP4430 SDP. Without this the bootup would throw oops in omap_serial_init(). Note that the ifndef CONFIG_ARCH_OMAP4 is split into two sections to enable omap_serial_early_init(). This ifndef cannot be removed until omap4 clock framework is implemented. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-By: Tony Lindgren <tony@atomide.com> Reviewed-By: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap3: PM: enable UART3 module wakeupsKevin Hilman
UART3 is in the PER powerdomain. If PER goes idle/inactive independently of CORE, for UART3 to wakeup it must have its wakeup enable bits setup in PM_WKEN_PER. This patch enables these bits. The reason it works when PER and CORE work together is because when CORE goes inactive/retention, the IOPAD wakeups are enabled and trigger UART3 wakeup. Without this patch, when the UART inactivity timer fires for UART3, its clocks are disabled and it's unable to wakeup so will be unusable until PER is awoken by another source. Another way of testing is by keeping CORE on during suspend but allowing PER to hit retention # echo 3 > /debug/pm_debug/core_pwrdm/suspend then enter suspend # echo mem > /sys/power/state Without this patch, UART3 will be unable to wakeup the system. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap2: Fix console serial port number for n8x0Tony Lindgren
With the recent changes omap serial ports match the physical numbering like they should. Fix the kernel CMDLINE accordingly so console works. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap2: Fix detection of n8x0Tony Lindgren
Otherwise the machine_is_nokia_n8*() does not work. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap1: Fix DSP public peripherals support for ams-deltaJanusz Krzysztofik
DSP public peripherals used to work on OMAP1510 based (or all OMAP1 class?) machines as long as old dspgateway code were present in the l-o tree. For several months it is no longer included, breaking support for McBSP1 based audio on Amstrad Delta, for example. This patch, derived from the old dspgateway code, corrects the problem for the board by simply taking the DSP out of reset state, I guess. That way, things should not break when a new dsp code is added to the tree, and the change can be reverted then. If there are any reports on McBSP1 or other DSP public peripherals not working for other OMAP1 machines (I've not heard of any for now), I can prepare a more general patch providing an extra include file with a helper function defined. Created and tested against linux-2.6.32-rc5 Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap1: Fix redundant UARTs pin muxing that can break other hardware supportJanusz Krzysztofik
Commit 15ac408ee5a509053a765b816e9179515329369f removed enabled_uart and OMAP_TAG_UART. This works for mach-omap2, but causes issues on mach-omap1 for some boards as the mach-omap1 serial.c was muxing pins based on the enabled_uart flag for 15xx. Fix this by muxing pins in board-*.c files for the 15xx boards for the uart ports that had enabled_uart flag set before the commit above. Tested on Amsdtrad Delta only. Note that in the future we should add support for powering down the uarts with a timer like mach-omap2/serial.c does. Otherwise the enabled uarts will be blocking retention-while-idle. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap: iommu: fix wrong condition check for SUPERSECTIONHiroshi DOYU
A bit (2 << 0) is set both on SECTION and SUPERSECTION. To identify SUPERSECTION correctly, other bits should be compared too. Reported-by: "Srinivas Pulukuru" <srinivas.pulukuru@ti.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap: SDMA: Fix omap_stop_dma() API for channel linkingSantosh Shilimkar
OMAP sDMA driver API omap_stop_dma() doesn't really stop the dma when used in linking scenario. The DMA channel needs to be disabled before resetting the chain. Also fix clearing of the OMAP_DMA_ACTIVE status in the linked case. Cc: Hari n <hari.zoom@gmail.com> Cc: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-22omap: Fix omap-keypad by restoring old keypad.h without breaking omap2 ↵Janusz Krzysztofik
boards that use matrix_keypad Only mach-omap2 boards are currently using matrix_keypad. Allow mach-omap1 boards to use the old style keypad.h without breaking. Created against linux-2.6.32-rc5. Compile tested with omap_3430sdp_defconfig and rx51_defconfig. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-21ARM: 5769/1: CPU_ARM920T: remove dead Maverick EP9312 URLHartley Sweeten
Remove the URL listed for Maverick EP9312 since it is not available and modify the help text appropriately. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21ARM: 5768/1: ep93xx: remove dead code in ep93xx_gpio_ab_irq_handler()Hartley Sweeten
Remove unnecessary code in ep93xx_gpio_ab_irq_handler(). The desc calculation for gpio port B was left in when the following commit was merged. commit d8aa0251f12546e9bd1e9ee1d9782d6492819a04 Author: Dmitry Baryshkov <dbaryshkov@gmail.com> Date: Thu Oct 9 13:36:24 2008 +0100 [ARM] 5298/1: Drop desc_handle_irq() It's not needed so remove it. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21ARM: 5767/1: ep93xx: remove ep93xx_init_time() prototypeHartley Sweeten
Remove unused prototype for ep93xx_init_time(). This function is not defined in the kernel. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21ARM: 5765/1: Updated U300 defconfigLinus Walleij
This updates the U300 to use all the drivers merged in during the 2.6.32 merge window. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-21ARM: 5766/1: Fix watchdog enabling for AT91SAM9G45Yegor Yefremov
The macro for the watchdog has been changed from CONFIG_AT91SAM9_WATCHDOG to CONFIG_AT91SAM9X_WATCHDOG due to AT91CAP9 chips support Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-17ARM: 5764/1: bcmring: add oprofile pmu supportLeo Chen
add oprofile pmu support for bcmring. Signed-off-by: Leo Hao Chen <leochen@broadcom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-17Merge branch 'fix' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
2009-10-17[ARM] pxa/spitz: add gpio button support (fixes regression)Stanislav Brabec
Updating desc for lid keys and resending patch with proper comments: Define Spitz buttons as GPIO keys in a way compatible with the old driver: On/Off: As Suspend EV_PWR key Raw values of lid sensors SWA and SWB: As EV_SW switches SWA: Display Down SWB: Lid Closed Recommended user space decoding: SWA==0 & SWB==0: lid opened (landscape mode) SWA==1 & SWB==0: invalid (or mechanic race condition) SWA==0 & SWB==1: lid closed with display up (portrait mode or mechanic race condition while closing to display-less mode) SWA==1 & SWB==1: lid closed with display down (display-less mode) AK_INT remote trigger is not mapped as input event. Without complete remote driver and remote pull-up control it has no useful interpretation. Signed-off-by: Stanislav Brabec <utx@penguin.cz> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-17[ARM] pxa/cm-x300: fix mmc numberingMike Rapoport
CM-X300 has libertas on mmc2 and SD card slot on mmc1. This patch fixes wrong MMC ports assignment. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-15Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: OMAP2xxx clock: set up clockdomain pointer in struct clk OMAP: Fix race condition with autodeps omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop omap: Initialization of SDRC params on Zoom2 omap: RX-51: Drop I2C-1 speed to 2200 omap: SDMA: Fixing bug in omap_dma_set_global_params() omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
2009-10-15ARM: 5763/1: ARM: SMP: Fix the BUG with CONFIG_PREEMPT enabledSantosh Shilimkar
This patch fixes the BUG: using smp_processor_id() in preemptible Below is the stripped backtrace. BUG: using smp_processor_id() in preemptible [00000000] code: init/1 caller is flush_tlb_mm+0x44/0x70 Backtrace: [<c00225c4>] (dump_backtrace+0x0/0x110) from [<c01713a0>] (dump_stack+0x18/0x1c) r7:00000000 r6:c00234f0 r5:00000001 r4:c7828000 [<c0171388>] (dump_stack+0x0/0x1c) from [<c0135364>] (debug_smp_processor_id+0xc0/0xf0) [<c01352a4>] (debug_smp_processor_id+0x0/0xf0) from [<c00234f0>] (flush_tlb_mm+0x44/0x70) r7:00000000 r6:c60b41a0 r5:c60b4154 r4:00000001 [<c00234ac>] (flush_tlb_mm+0x0/0x70) from [<c0039568>] (dup_mm+0x304/0x38c) r5:c1f09058 r4:00000000 [<c0039264>] (dup_mm+0x0/0x38c) from [<c0039de4>] (copy_process+0x7b8/0xeb0) [<c003962c>] (copy_process+0x0/0xeb0) from [<c003a638>] (do_fork+0x15c/0x29c) [<c003a4dc>] (do_fork+0x0/0x29c) from [<c0021df0>] (sys_clone+0x34/0x3c) [<c0021dbc>] (sys_clone+0x0/0x3c) from [<c001efa0>] (ret_fast_syscall+0x0/0x2c) Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-15Merge branch 'for-rmk-rc' of git://git.pengutronix.de/git/imx/linux-2.6Russell King
2009-10-14Merge branch '2_6_32rc4_fixes' of git://git.pwsan.com/linux-2.6 into ↵Tony Lindgren
omap-fixes-for-linus
2009-10-14OMAP2xxx clock: set up clockdomain pointer in struct clkPaul Walmsley
clock24xx.c is missing a omap2_init_clk_clkdm() in its omap2_clk_init() function. Among other bad effects, this causes the OMAP hwmod layer to oops on boot. Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano Panella <Stefano.Panella@csr.com> for reporting this bug. Thanks to Tony Lindgren <tony@atomide.com> for N800 booting advice. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Carlos Aguiar <carlos.aguiar@indt.org.br> Cc: Stefano Panella <Stefano.Panella@csr.com> Cc: Tony Lindgren <tony@atomide.com>
2009-10-14OMAP: Fix race condition with autodepsKalle Jokiniemi
There is a possible race condition in clockdomain code handling hw supported idle transitions. When multiple autodeps dependencies are being added or removed, a transition of still remaining dependent powerdomain can result in false readings of the state counter. This is especially fatal for off mode state counter, as it could result in a driver not noticing a context loss. Fixed by disabling hw supported state transitions when autodeps are being changed. Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-10-14omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stopJarkko Nikula
This small typo written by author causes that McBSP receiver is disabled on OMAP2430 and OMAP3430 even if only transmitter is stopped. This was noted with ALSA SoC where simultaneous recording halted if playback was stopped first. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: Initialization of SDRC params on Zoom2Teerth Reddy
This patch initializes the correct SDRC settings required for DVFS on Zoom2. Signed-off-by: Teerth Reddy <teerth@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: RX-51: Drop I2C-1 speed to 2200Aaro Koskinen
The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited by TWL5030/GAIA; a higher speed could lead to errors on the interface. The maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz), 2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz). Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: SDMA: Fixing bug in omap_dma_set_global_params()Anuj Aggarwal
Argument tparams was not being used to program global register GCR.HI_THREAD_RESERVED. This patch fixes the same. Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfigSanjeev Premi
The symbol CONFIG_ISP1301_OMAP was defined twice in the defconfig. This was causing the warning: arch/arm/configs/omap3_beagle_defconfig:972:warning: override: reassigning to symbol ISP1301_OMAP Signed-off-by: Sanjeev Premi <premi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14ARM: 5760/1: ep93xx: fix build error in edb93xx.cHartley Sweeten
Fix a build error due to a typo (missing comma) in: ARM: 5754/1: ep93xx: update i2c support Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-14ARM: 5759/1: Add register information of threads to coredumpArtem Bityutskiy
Defines ELF_CORE_COPY_TASK_REGS so that CPU register information of every thread is included in coredump. Without this, only the faulting thread is coredumped. Cc: Roger Quadros <ext-roger.quadros@nokia.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-14ARM: 5757/1: Thumb-2: Correct "mov.w pc, lr" instruction which is unpredictableCatalin Marinas
The 32-bit wide variant of "mov pc, reg" in Thumb-2 is unpredictable causing improper handling of the undefined instructions not caught by the kernel. This patch adds a movw_pc macro for such situations (currently only used in call_fpe). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-13MXC: fix reset for mx31, mx35 and mx27 SoCsValentin Longchamp
The clock name for the watchdog devices was not set consistently with mx21 on these platforms, resulting in the reset not to work. Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13fix pcm037_eet compilation with the new SPI driverGuennadi Liakhovetski
Fix pcm037_eet compilation with the new imx SPI driver by unifying platform device names. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Valentin Longchamp <valentin.longchamp@epfl.ch> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13fix compilation of i.MX31 platformsGuennadi Liakhovetski
mxc_iomux_v3_init() is defined in arch/arm/plat-mxc/iomux-v3.c, which is not linked for i.MX31 and produces an undefined reference error. Fix this by building the offending code only for i.MX35. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13pcm970 mmc: Fix ro switchSascha Hauer
We have to use mxc_gpio_mode() for the card detection pin instead of mxc_gpio_setup_multiple_pins() because the latter does a gpio_request() and thus a later gpio_request() fails. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-13pcm038: Add SPI/MC13783 supportSascha Hauer
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-10-12ARM: force dcache flush if dcache_dirty bit setNitin Gupta
On ARM, update_mmu_cache() does dcache flush for a page only if it has a kernel mapping (page_mapping(page) != NULL). The correct behavior would be to force the flush based on dcache_dirty bit only. One of the cases where present logic would be a problem is when a RAM based block device[1] is used as a swap disk. In this case, we would have in-memory data corruption as shown in steps below: do_swap_page() { - Allocate a new page (if not already in swap cache) - Issue read from swap disk - Block driver issues flush_dcache_page() - flush_dcache_page() simply sets PG_dcache_dirty bit and does not actually issue a flush since this page has no user space mapping yet. - Now, if swap disk is almost full, this newly read page is removed from swap cache and corrsponding swap slot is freed. - Map this page anonymously in user space. - update_mmu_cache() - Since this page does not have kernel mapping (its not in page/swap cache and is mapped anonymously), it does not issue dcache flush even if dcache_dirty bit is set by flush_dcache_page() above. <user now gets stale data since dcache was never flushed> } Same problem exists on mips too. [1] example: - brd (RAM based block device) - ramzswap (RAM based compressed swap device) Signed-off-by: Nitin Gupta <ngupta@vflare.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-12Merge branch 'fix' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
2009-10-12[ARM] pxa: workaround errata #37 by not using half turbo switchingDennis O'Brien
PXA27x Errata #37 implies system will hang when switching into or out of half turbo (HT bit in CLKCFG) mode, workaround this by not using it. Signed-off-by: Dennis O'Brien <dennis.obrien@eqware.net> Cc: stable-2.6.31 <stable@kernel.org> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-12[ARM] pxa/csb726: adjust duplicate structure field initializationJulia Lawall
Currently the irq_type field of the csb726_lan_config structure is initialized twice. The value in the first case, SMSC911X_IRQ_POLARITY_ACTIVE_LOW, is normally stored in the irq_polarity field, so I have renamed the field in the first initialization to that. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-10-11headers: remove sched.h from interrupt.hAlexey Dobriyan
After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-10-11ARM: Add kmap_atomic type debuggingRussell King
Seemingly this support was missed when highmem was added, so DEBUG_HIGHMEM wouldn't have checked the kmap_atomic type. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11ARM: boolean bit testingJohannes Weiner
Bit testing (test, testset, testclear, testchange) for bit numbers known at compile time returns a word with the tested-for bit set. Change it to return a true boolean value so to make it consistent with the out-of-line path and all the other bitops implementations. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11ARM: update die() outputRussell King
Make die() better match x86: - add printing of the last accessed sysfs file - ensure console_verbose() is called under the lock - ensure we panic outside of oops_exit() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11ARM: Dump code/mem oops lines with the appropriate log levelRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-11ARM: Dump memory and backtrace as one printk per lineRussell King
dump_mem and dump_backtrace were both using multiple printk statements to print each line. With DEBUG_LL enabled, this causes OOPS to become very difficult to read. Solve this by only using one printk per line. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-10ARM: 5756/1: ep93xx: introduce clk parentHartley Sweeten
The clock generation system in the ep93xx uses two external oscillator's and two internal PLLs to derive all the internal clocks. Many of these internal clocks can be stopped to save power. This introduces a "parent" hierarchy for the clocks so that the users count can be correctly tracked for power management. The "parent" for the video clock can either be one of the PLL outputs or the external oscillator. In order to correctly track the "parent" for the video clock calc_clk_div() needed to be modified. It now returns an error code if the desired rate cannot be generated. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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