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* ARM: OMAP2: Fix sparse, checkpatch warnings fro GPMC code, use ioremapPaul Walmsley2008-10-062-0/+6
| | | | | | | | | | | Fix sparse, checkpatch warnings fro GPMC code. Also change to use ioremap, and add missing function prototypes to gpmc.h. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2: Add pinmux support for omap34xxVikram Pandita2008-10-061-11/+145
| | | | | | | | | | | | | This patch adds pinmux support for OMAP3. Incorporated review comments from Tony to make mux_value as bit mask. Tested on 3430SDP. Also merge in adding of I2C pins from Jarkko Nikula. Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2: Use omap_globals for CPU detection for multi-omapTony Lindgren2008-10-063-0/+11
| | | | | | | | This allows to get rid of the ifdefs and will allow simpler CPU detection in the future. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2: Move sleep.S into sleep24xx.STony Lindgren2008-10-061-1/+2
| | | | | | | | | | | | | | | | | | Some register offsets are different for 242x and 243x. This will allow compiling sleep code for both chips into the same kernel. Pass the addresses for SDRC_DDLA_CTRL and SDRC_POWER to the omap24xx_cpu_suspend instead of loading the values since the only. Also fix a bug to call omap2_sram_suspend with the value of SDRC_DLLA_CTRL instead of the address as that's what omap24xx_cpu_suspend expects to determine between DDR and SDR. This bug has not been noticed as the boards seem to have DDR instead of SDR. Note that some PM patches are still missing. The PM patches will be added later on once the base files are in sync with linux-omap tree. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2 Provide function to enable/disable uart clocksJouni Hogander2008-10-062-0/+7
| | | | | | | | | | This patch adds common function to enable/disable omap2/3 uart clocks. Enabled uarts are passed by bootloader in atags and clocks for these enabled uarts are touched. Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge unstable branch 'omap-rmk'Russell King2008-10-0316-124/+231
|\ | | | | | | Merge branch 'omap-rmk' into omap-all
| * [ARM] omap: fix lots of 'Using plain integer as NULL pointer'Russell King2008-09-051-1/+1
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: fix inappropriate casting in gpio.cRussell King2008-09-052-36/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gpio.c wilfully casts physical addresses to void __iomem * and then fixes them up at runtime using: bank->base = IO_ADDRESS(bank->base); where accesses prior to this fixup are via omap_read/omap_write, and after are by __raw_read/__raw_write. This doesn't lend itself to static checking, nor to easy understanding of the code. And so, OMAP_MPUIO_BASE gets to be the right type - integer like since it's a physical address, not a MMIO pointer. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: make sure virtual mmio addresses are __iomem pointer-likeRussell King2008-09-052-7/+7
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: Fix IO_ADDRESS() macrosRussell King2008-09-057-53/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | OMAP1_IO_ADDRESS(), OMAP2_IO_ADDRESS() and IO_ADDRESS() returns cookies for use with __raw_{read|write}* for accessing registers. Therefore, these macros should return (void __iomem *) cookies, not integer values. Doing this improves typechecking, and means we can find those places where, eg, DMA controllers are incorrectly given virtual addresses to DMA to, or physical addresses are thrown through a virtual to physical address translation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: convert mcbsp to use ioremap()Russell King2008-09-052-17/+28
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: allow ioremap() to use our fixed IO mappingsRussell King2008-09-053-1/+90
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: improve is_omap_port()Russell King2008-09-051-6/+6
| | | | | | | | | | | | | | | | Make is_omap_port() take the uart_8250_port structure so it can do whatever test it desires. Convert the test to compare the physical addresses rather than virtual addresses. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: fix virtual vs physical address space confusionsRussell King2008-09-042-2/+5
| | | | | | | | | | | | | | | | mcbsp is confused as to what takes a physical or virtual address. Fix the two instances where it gets it wrong. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] omap: fix gpio.c build errorRussell King2008-09-031-1/+1
| | | | | | | | | | | | | | arch/arm/plat-omap/gpio.c: In function '_omap_gpio_init': arch/arm/plat-omap/gpio.c:1492: error: 'omap_mpuio_device' undeclared (first use in this function) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'omap2-clock' of ↵Russell King2008-10-034-0/+299
|\ \ | |/ |/| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git Merge branch 'omap2-clock' into omap-all
| * [ARM] OMAP3 pwrdm: add hardware save-and-restore (SAR) supportPaul Walmsley2008-08-211-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OMAP3430ES2+ introduces a new feature: optional powerdomain context hardware save-and-restore (SAR). Currently, this feature only applies to USBHOST and USBTLL module context when the USBHOST or CORE powerdomains enter a low-power sleep state[1]. This feature avoids re-enumeration of USB devices when the powerdomains return from idle, which is potentially time-consuming. This patch adds support for enabling and disabling hardware save-and-restore to the powerdomain code. Three new functions are added, pwrdm_enable_hdwr_sar(), pwrdm_disable_hdwr_sar(), and pwrdm_can_hdwr_sar(). A new struct powerdomain "flags" field is added, with a PWRDM_HAS_HDWR_SAR flag to indicate powerdomains with SAR support. Thanks to Jouni Högander <jouni.hogander@nokia.com> for reviewing an earlier version of these patches, and Richard Woodruff <r-woodruff2@ti.com> for clarifying the purpose of these bits. 1. For the USBHOST controller module, context loss occurs when the USBHOST powerdomain enters off-idle. For USBTLL, context loss occurs either if CORE enters off-idle, or if the CORE logic is configured to turn off when CORE enters retention-idle (OSWR). 34xx ES2 TRM 4.8.6.1.1, 4.8.6.1.2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: OMAP2: Clockdomain: Associate clocks with clockdomainsPaul Walmsley2008-08-191-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Associate each OMAP24xx clock in arch/arm/mach-omap2/clock24xx.h with a clockdomain. Also move the L4 clock up higher in the file in preparation to define the SSI L4 iclk. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * ARM: OMAP2: Clockdomain: Connect clockdomain code to powerdomain codePaul Walmsley2008-08-191-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thie patch adds code to the powerdomain layer to track the clockdomains associated with each powerdomain. It also modifies the clockdomain code to register clockdomains with their corresponding powerdomain when the clockdomain is registered. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * ARM: OMAP2: Clockdomain: Add base OMAP2/3 clockdomain codePaul Walmsley2008-08-192-0/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates an interface to the clockdomain registers in the PRM/CM modules on OMAP2/3. This interface is intended to be used by PM code, e.g., pm.c; not by device drivers directly. The patch also adds clockdomain usecount tracking. This is intended to be called whenever the first clock in a clockdomain is enabled, or when the last enabled clock in a clockdomain is disabled. If the clockdomain is in software-supervised mode, the code will force-wakeup or force-sleep the clockdomain. If the clockdomain is in hardware-supervised mode, the first clock enable will add sleep and wakeup dependencies on a user-selectable set of parent domains (usually MPU & IVA2), and the disable will remove them. Each clockdomain will be defined in later patches as static structures. The clockdomain structures are linked into a list at boot by clkdm_register(), similar to the OMAP clock code. The patch adds a Kconfig option, CONFIG_OMAP_DEBUG_CLOCKDOMAIN, which when enabled will emit verbose debug messages via pr_debug(). Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * ARM: OMAP2: Powerdomain: Add base OMAP2/3 powerdomain codePaul Walmsley2008-08-192-0/+151
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates an interface to the powerdomain registers in the PRM/CM modules on OMAP2/3. This interface is intended to be used by PM code, e.g., pm.c; not by device drivers directly. Each powerdomain will be defined in later patches as static structures. Also defined are dependencies between powerdomains, used for adding and removing PM_WKDEP and CM_SLEEPDEP bits. The powerdomain structures are linked into a list at boot by pwrdm_register(), similar to the OMAP clock code. The patch adds a Kconfig option, CONFIG_OMAP_DEBUG_POWERDOMAIN, which when enabled will emit verbose debug messages via pr_debug(). Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | removed unused #include <linux/version.h>'sAdrian Bunk2008-08-231-1/+0
|/ | | | | | | | This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [ARM] dma-mapping: improve type-safeness of DMA translationsRussell King2008-08-101-7/+8
| | | | | | | | | | | | | | OMAP at least gets the return type(s) for the DMA translation functions wrong, which can lead to subtle errors. Avoid this by moving the DMA translation functions to asm/dma-mapping.h, and converting them to inline functions. Fix the OMAP DMA translation macros to use the correct argument and result types. Also, remove the unnecessary casts in dmabounce.c. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King2008-08-0788-48/+7775
| | | | | | This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Remove asm/hardware.h, use asm/arch/hardware.h insteadRussell King2008-08-0711-11/+11
| | | | | | | | | Remove includes of asm/hardware.h in addition to asm/arch/hardware.h. Then, since asm/hardware.h only exists to include asm/arch/hardware.h, update everything to directly include asm/arch/hardware.h and remove asm/hardware.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Eliminate useless includes of asm/mach-types.hRussell King2008-08-072-2/+0
| | | | | | | | There are 43 includes of asm/mach-types.h by files that don't reference anything from that file. Remove these unnecessary includes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 5179/1: Replace obsolete IRQT_* and __IRQT_* values with IRQ_TYPE_*Dmitry Baryshkov2008-07-271-14/+14
| | | | | | | | | | | | | | | | | | | | IRQT_* and __IRQT_* were obsoleted long ago by patch [3692/1]. Remove them completely. Sed script for the reference: s/__IRQT_RISEDGE/IRQ_TYPE_EDGE_RISING/g s/__IRQT_FALEDGE/IRQ_TYPE_EDGE_FALLING/g s/__IRQT_LOWLVL/IRQ_TYPE_LEVEL_LOW/g s/__IRQT_HIGHLVL/IRQ_TYPE_LEVEL_HIGH/g s/IRQT_RISING/IRQ_TYPE_EDGE_RISING/g s/IRQT_FALLING/IRQ_TYPE_EDGE_FALLING/g s/IRQT_BOTHEDGE/IRQ_TYPE_EDGE_BOTH/g s/IRQT_LOW/IRQ_TYPE_LEVEL_LOW/g s/IRQT_HIGH/IRQ_TYPE_LEVEL_HIGH/g s/IRQT_PROBE/IRQ_TYPE_PROBE/g s/IRQT_NOEDGE/IRQ_TYPE_NONE/g Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* gpio: sysfs interfaceDavid Brownell2008-07-251-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a simple sysfs interface for GPIOs. /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel /gpioN ... for each exported GPIO #N /value ... always readable, writes fail for input GPIOs /direction ... r/w as: in, out (default low); write high, low /gpiochipN ... for each gpiochip; #N is its first GPIO /base ... (r/o) same as N /label ... (r/o) descriptive, not necessarily unique /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1) GPIOs claimed by kernel code may be exported by its owner using a new gpio_export() call, which should be most useful for driver debugging. Such exports may optionally be done without a "direction" attribute. Userspace may ask to take over a GPIO by writing to a sysfs control file, helping to cope with incomplete board support or other "one-off" requirements that don't merit full kernel support: echo 23 > /sys/class/gpio/export ... will gpio_request(23, "sysfs") and gpio_export(23); use /sys/class/gpio/gpio-23/direction to (re)configure it, when that GPIO can be used as both input and output. echo 23 > /sys/class/gpio/unexport ... will gpio_free(23), when it was exported as above The extra D-space footprint is a few hundred bytes, except for the sysfs resources associated with each exported GPIO. The additional I-space footprint is about two thirds of the current size of gpiolib (!). Since no /dev node creation is involved, no "udev" support is needed. Related changes: * This adds a device pointer to "struct gpio_chip". When GPIO providers initialize that, sysfs gpio class devices become children of that device instead of being "virtual" devices. * The (few) gpio_chip providers which have such a device node have been updated. * Some gpio_chip drivers also needed to update their module "owner" field ... for which missing kerneldoc was added. * Some gpio_chips don't support input GPIOs. Those GPIOs are now flagged appropriately when the chip is registered. Based on previous patches, and discussion both on and off LKML. A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this merges to mainline. [akpm@linux-foundation.org: a few maintenance build fixes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architecturesAndrea Righi2008-07-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit boundary. For example: u64 val = PAGE_ALIGN(size); always returns a value < 4GB even if size is greater than 4GB. The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for example): #define PAGE_SHIFT 12 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) ... #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) The "~" is performed on a 32-bit value, so everything in "and" with PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary. Using the ALIGN() macro seems to be the right way, because it uses typeof(addr) for the mask. Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in include/linux/mm.h. See also lkml discussion: http://lkml.org/lkml/2008/6/11/237 [akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c] [akpm@linux-foundation.org: fix v850] [akpm@linux-foundation.org: fix powerpc] [akpm@linux-foundation.org: fix arm] [akpm@linux-foundation.org: fix mips] [akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c] [akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c] [akpm@linux-foundation.org: fix powerpc] Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bootmem: replace node_boot_start in struct bootmem_dataJohannes Weiner2008-07-241-3/+1
| | | | | | | | | | | | Almost all users of this field need a PFN instead of a physical address, so replace node_boot_start with node_min_pfn. [Lee.Schermerhorn@hp.com: fix spurious BUG_ON() in mark_bootmem()] Signed-off-by: Johannes Weiner <hannes@saeureba.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* arm: bus_id -> dev_name() and dev_set_name() conversionsKay Sievers2008-07-211-1/+1
| | | | | | Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove KOBJ_NAME_LEN defineKay Sievers2008-07-211-1/+1
| | | | | | | | | Kobjects do not have a limit in name size since a while, so stop pretending that they do. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* ARM: OMAP: Introduce omap_globals and prcm access functions for multi-omapTony Lindgren2008-07-031-9/+50
| | | | | | | | | | | | New struct omap_globals contains the omap processor specific module bases. Use omap_globals to set the various base addresses to make detecting omap chip type simpler. Also introduce OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS for future multi-omap patches. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: USB: Change omap USB code to use omap_read/write instead of __REGTony Lindgren2008-07-031-40/+91
| | | | | | | | | | | Change omap USB code to use omap_read/write instead of __REG for multi-omap Cc: David Brownell <david-b@pacbell.net> Cc: linux-usb@vger.kernel.org Cc: i2c@lm-sensors.org Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: CLKFW: Initial debugfs support for omap clock frameworkHiroshi DOYU2008-07-031-36/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | debugfs can provide the infrastructure to trace the dependencies of clock tree hierarchy quite visibly. This patch enables to keep track of clock tree hierarchy and expose their attributes under each clock directry as below: omap:~# tree -d -L 2 /debug/clock/omap_32k_fck/ /debug/clock/omap_32k_fck/ |-- gpt10_fck |-- gpt11_fck |-- gpt1_fck |-- per_32k_alwon_fck | |-- gpio2_fck | |-- gpio3_fck | |-- gpio4_fck | |-- gpio5_fck | |-- gpio6_fck | `-- wdt3_fck |-- ts_fck `-- wkup_32k_fck |-- gpio1_fck `-- wdt2_fck 14 directories omap:~# tree /debug/clock/omap_32k_fck/gpt10_fck/ /debug/clock/omap_32k_fck/gpt10_fck/ |-- flags |-- rate `-- usecount 0 directories, 3 files Although, compared with David Brownell's small patch, this may look bit overkilling, I expect that this debugfs can deal with other PRCM complexities at the same time. For example, powerdomain dependencies can be expressed by using symbolic links of these clocks if powerdomain supports dubgfs as well. Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: McBSP: Prepare for splitting into omap1 and omap2 codeEduardo Valentin2008-07-032-409/+301
| | | | | | | | | | | | This patch transform mcbsp code to use platform data from arch/arm/plat-omap/devices.c It also gets ride of ifdefs on mcbsp.c code. To do it, a platform data structure was defined. Signed-off-by: Eduardo Valentin <eduardo.valentin@indt.org.br> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: McBSP: Coding style cleanup on arch/arm/plat-omap/mcbsp.cEduardo Valentin2008-07-031-95/+102
| | | | | | | | | | This patch fix lots of warnings and errors reported by scripts/checkpatch.pl on arch/arm/plat-omap/mcbsp.c. Signed-off-by: Eduardo Valentin <eduardo.valentin@indt.org.br> Acked-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: SRAM: Split sram24xx.S into sram242x.S and sram243x.STony Lindgren2008-07-031-35/+176
| | | | | | | Split sram24xx.S into sram242x.S and sram243x.S Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: SRAM: Move sram-fn.S from plat-omap to mach-omap1Tony Lindgren2008-07-032-58/+1
| | | | | | | This file is omap1 specific. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMA: Clean-up codeTony Lindgren2008-07-031-123/+132
| | | | | | DMA clean-up, mostly checkpatch.pl fixes. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMA: Remove __REG accessTony Lindgren2008-07-031-179/+324
| | | | | | | | | | | | Remove __REG access in DMA code, use dma_read/write instead: - dynamically set the omap_dma_base based on the omap type - omap_read/write becomes dma_read/write - dma channel registers are read with dma_ch_read/write Cc: David Brownell <david-b@pacbell.net> Cc: linux-usb@vger.kernel.org Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMA: Make channels dynamic for multi-bootTony Lindgren2008-07-031-21/+41
| | | | | | | Make DMA channels dynamic for multi-boot Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMTimer: Optimize by adding load and startRichard Woodruff2008-07-031-1/+18
| | | | | | | | | | | | | | | | | | | | | | | | | This patch optimizes the timer load and start sequence. By combining the load and start a needless posted wait can be removed from the system timer execution path. * Before patch register writes are taking up .078% @ 500MHz during idle. Address |total |min |max |avr |count|ratio% old\process\default_idle|7.369s |0.0us|999.902ms|14.477ms|509. |62.661% ld\Global\cpu_v7_do_idle|4.265s |0.0us|375.786ms|24.374ms|175. |36.270% (UNKNOWN)|17.503ms|0.us|531.080us|5.119us|3419. |0.148% r\omap_dm_timer_set_load|8.135ms|0.0us|79.887us|15.065us|540. |0.069% <-- \vmlinux-old\Global\_end|2.023ms|0.0us|4.000us|0.560us|3613. |0.017% -old\Global\__raw_readsw|1.962ms|0.0us|108.610us|9.167us|214. |0.016% old\smc91x\smc_interrupt|1.353ms|0.0us|10.212us|2.348us|576. |0.011% s/namei\__link_path_walk|1.161ms|0.0us|4.310us|0.762us| 1524. |0.009% \omap_dm_timer_write_reg|1.085ms|0.0us|126.150us|2.153us|504. |0.009% <-- * After patch timer functions do not show up in top listings for long captures. Signed-off-by: Richard Woodruff <r-woodruff2@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMTimer: Use posted modeRichard Woodruff2008-07-031-42/+151
| | | | | | | | | | | | | | | | This patch adds the use of write posting for the timer. Previously, every write could lock the requestor for almost 3x32KHz cycles. This patch only synchronizes before writes and reads instead of after them and it does it on per register basis. Doing it this way there is some chance to hide some of the sync latency. It also removes some needless reads when non-posted mode is there. With out this fix the read/writes take almost 2% CPU load @500MHz just waiting on tick timer registers. Also define new 34xx only registers. Signed-off-by: Richard Woodruff <r-woodruff2@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMA: Don't mark channel active in omap_enable_channel_irqJarkko Nikula2008-06-051-2/+0
| | | | | | | | Channel should be marked active only when DMA is really started. Otherwise just omap_request_dma, omap_dma_link_lch and omap_dma_unlink_lch will cause incorrect dump_stack(). Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* [ARM] omap: fix omap clk support build errorsRussell King2008-05-221-0/+1
| | | | | | | | | | arch/arm/plat-omap/clock.c:397: warning: "struct cpufreq_frequency_table" declared inside parameter list arch/arm/plat-omap/clock.c:397: warning: its scope is only this definition or declaration, which is probably not what you want arch/arm/plat-omap/clock.c: In function `clk_init_cpufreq_table': arch/arm/plat-omap/clock.c:402: error: structure has no member named `clk_init_cpufreq_table' arch/arm/plat-omap/clock.c:403: error: structure has no member named `clk_init_cpufreq_table' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: Fix Unbalanced enable for IRQ in omap mailboxHiroshi DOYU2008-05-091-1/+0
| | | | | Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: DMA: Fix incorrect channel linkingJarkko Nikula2008-05-091-1/+1
| | | | | | | | | | | | Function enable_lnk does incorrect channel link on non-omap1 builds if chain is created manually with omap_request_dma and omap_dma_link_lch functions. Fix this by making sure that next_linked_ch field is initialized to -1 just in omap_request_dma. Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: Warn on disabling clocks with no usersTony Lindgren2008-05-091-1/+9
| | | | | | | | Instead of BUG(), warn on disabling clocks with no users. Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'semaphore' of ↵Linus Torvalds2008-04-211-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Deprecate the asm/semaphore.h files in feature-removal-schedule. Convert asm/semaphore.h users to linux/semaphore.h security: Remove unnecessary inclusions of asm/semaphore.h lib: Remove unnecessary inclusions of asm/semaphore.h kernel: Remove unnecessary inclusions of asm/semaphore.h include: Remove unnecessary inclusions of asm/semaphore.h fs: Remove unnecessary inclusions of asm/semaphore.h drivers: Remove unnecessary inclusions of asm/semaphore.h net: Remove unnecessary inclusions of asm/semaphore.h arch: Remove unnecessary inclusions of asm/semaphore.h
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