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* clocksource: exynos_mct: Don't reset the counter during boot and resumeChirantan Ekbote2014-06-171-6/+3
| | | | | | | | | | | | | | | | | | | | | Unfortunately on some exynos systems, resetting the mct counter also resets the architected timer counter. This can cause problems if the architected timer driver has already been initialized because the kernel will think that the counter has wrapped around, causing a big jump in printk timestamps and delaying any scheduled clock events until the counter reaches the value it had before it was reset. The kernel code makes no assumptions about the initial value of the mct counter so there is no reason from a software perspective to clear the counter before starting it. This also fixes the problems described in the previous paragraph. Cc: Olof Johansson <olof@lixom.net> Cc: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Chirantan Ekbote <chirantan@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
* Merge branch 'timers-core-for-linus' of ↵Linus Torvalds2014-06-0413-21/+407
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next Pull timer core updates from Thomas Gleixner: "This time you get nothing really exciting: - A huge update to the sh* clocksource drivers - Support for two more ARM SoCs - Removal of the deprecated setup_sched_clock() API - The usual pile of fixlets all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) clocksource: Add Freescale FlexTimer Module (FTM) timer support ARM: dts: vf610: Add Freescale FlexTimer Module timer node. clocksource: ftm: Add FlexTimer Module (FTM) Timer devicetree Documentation clocksource: sh_tmu: Remove unnecessary OOM messages clocksource: sh_mtu2: Remove unnecessary OOM messages clocksource: sh_cmt: Remove unnecessary OOM messages clocksource: em_sti: Remove unnecessary OOM messages clocksource: dw_apb_timer_of: Do not trace read_sched_clock clocksource: Fix clocksource_mmio_readX_down clocksource: Fix type confusion for clocksource_mmio_readX_Y clocksource: sh_tmu: Fix channel IRQ retrieval in legacy case clocksource: qcom: Implement read_current_timer for udelay ntp: Make is_error_status() use its argument ntp: Convert simple_strtol to kstrtol timer_stats/doc: Fix /proc/timer_stats documentation sched_clock: Remove deprecated setup_sched_clock() API ARM: sun6i: a31: Add support for the High Speed Timers clocksource: sun5i: Add support for reset controller clocksource: efm32: use $vendor,$device scheme for compatible string KConfig: Vexpress: build the ARM_GLOBAL_TIMER with vexpress platform ...
| * clocksource: Add Freescale FlexTimer Module (FTM) timer supportXiubo Li2014-05-233-0/+373
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Freescale FlexTimer Module time reference is a 16-bit counter that can be used as an unsigned or signed increase counter. CNTIN defines the starting value of the count and MOD defines the final value of the count. The value of CNTIN is loaded into the FTM counter, and the counter increments until the value of MOD is reached, at which point the counter is reloaded with the value of CNTIN. That's also when an overflow interrupt will be generated. Here using the 'evt' prefix or postfix as clock event device and the 'src' as clock source device. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Jingchang Lu <b35083@freescale.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * Merge branch 'clockevents/cmt-mtu2-tmu-cleanups' into clockevents/3.16Daniel Lezcano2014-05-231-1/+1
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| | * clocksource: sh_tmu: Fix channel IRQ retrieval in legacy caseLaurent Pinchart2014-05-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the legacy platform data case each TMU platform device handles a single channel with a single IRQ for the platform device. Retrieve the IRQ using the logical channel number instead of the hardware channel number. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: sh_tmu: Remove unnecessary OOM messagesJingoo Han2014-05-231-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. [dlezcano] : refreshed against latest modifications: kmalloc -> kzalloc Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: sh_mtu2: Remove unnecessary OOM messagesJingoo Han2014-05-231-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. [dlezcano] : refreshed against latest modifications: kmalloc -> kzalloc Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: sh_cmt: Remove unnecessary OOM messagesJingoo Han2014-05-231-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. [dlezcano] : refreshed against latest modifications: kmalloc -> kzalloc Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: em_sti: Remove unnecessary OOM messagesJingoo Han2014-05-231-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: dw_apb_timer_of: Do not trace read_sched_clockYang Wei2014-05-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | We do not need to trace read_sched_clock function, so add notrace attribute for this function. Signed-off-by: Yang Wei <Wei.Yang@windriver.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: Fix clocksource_mmio_readX_downXiubo Li2014-05-231-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some clocksource devices, for example, the registers are 32-bit, while the lower 16-bit is used for timer counting(And reading the upper 16-bit will return 0). For example, when the counter value is 0x00001111, and then the ~readl_relaxed(to_mmio_clksrc(c)->reg) will return the value of 0xFFFFEEEE, but it should be 0x0000EEEE. So just using the c->mask to mask the unused bits. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: Fix type confusion for clocksource_mmio_readX_YXiubo Li2014-05-231-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The types' definations are: o cycle_t -> u64 o readl_relaxed -> u32 o readw_relaxed -> u16 So let clocksource_mmio_readX_Ys return a cast to cycle_t, though this maybe look reduntant sometimes, it make sense and they will be more readable and less confusion... This patch clarifies the functions type and fix it. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | clocksource: qcom: Implement read_current_timer for udelayStephen Boyd2014-05-191-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setup the same timer used as the clocksource to be used as the read_current_timer implementation. This allows us to support a stable udelay implementation on MSMs where it's possible for the CPUs to scale speeds independently of one another. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | Merge remote-tracking branch 'tip/timers/core/timers/core' into clockevents/3.16Daniel Lezcano2014-05-163-11/+14
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| * | | clocksource: sun5i: Add support for reset controllerMaxime Ripard2014-04-221-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Allwinner A31 that uses this timer has the timer IP asserted in reset. Add an optional reset property to the DT, and deassert the timer from reset if it's there. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | | Merge branch 'clockevents/cmt-mtu2-tmu-cleanups' into clockevents/3.16Daniel Lezcano2014-04-223-680/+1305
| |\ \ \ | | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch set cleans up the Renesas CMT and TMU drivers in preparation for DT support. The first 35 patches are a bunch of necessary cleanups that reorganize the CMT and TMU drivers, their platform data, and the memory, interrupt and clock resources they expect. As a result the drivers accept a new platform data model close to the hardware with supports for all the timer channels using a single device. The next 13 patches (36/52 to 48/52) move all CMT and TMU platforms from the old to the new platform data model. Patches 49/52 to 52/52 then drop support for the old model and perform one more cleanup. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | | clocksource: efm32: use $vendor,$device scheme for compatible stringUwe Kleine-König2014-04-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wolfram Sang pointed out that "efm32,$device" is non-standard. So use the common scheme and prefix device with "efm32-". The old compatible string is left in place until arch/arm/boot/dts/efm32* is fixed. Acked-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | | clocksource: arm_global_timer: Only check for unusable timer on A9Matthew Leach2014-04-221-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The check for a usable global timer in the probe code does not enquire which CPU we are currently running on. This can cause the driver to incorrectly assume we have an unusable global timer if we are running on a CPU other than A9. Before checking the CPU revision, ensure we are running on an A9 CPU. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Matthew Leach <matthew.leach@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* | | | Merge tag 'devicetree-for-3.16' of ↵Linus Torvalds2014-06-041-1/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next Pull DeviceTree updates from Rob Herring: - Another round of clean-up of FDT related code in architecture code. This removes knowledge of internal FDT details from most architectures except powerpc. - Conversion of kernel's custom FDT parsing code to use libfdt. - DT based initialization for generic serial earlycon. The introduction of generic serial earlycon support went in through the tty tree. - Improve the platform device naming for DT probed devices to ensure unique naming and use parent names instead of a global index. - Fix a race condition in of_update_property. - Unify the various linker section OF match tables and fix several function prototype errors. - Update platform_get_irq_byname to work in deferred probe cases. - 2 binding doc updates * tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits) of: handle NULL node in next_child iterators of/irq: provide more wrappers for !CONFIG_OF devicetree: bindings: Document micrel vendor prefix dt: bindings: dwc2: fix required value for the phy-names property of_pci_irq: kill useless variable in of_irq_parse_pci() of/irq: do irq resolution in platform_get_irq_byname() of: Add a testcase for of_find_node_by_path() of: Make of_find_node_by_path() handle /aliases of: Create unlocked version of for_each_child_of_node() lib: add glibc style strchrnul() variant of: Handle memory@0 node on PPC32 only pci/of: Remove dead code of: fix race between search and remove in of_update_property() of: Use NULL for pointers of: Stop naming platform_device using dcr address of: Ensure unique names without sacrificing determinism tty/serial: pl011: add DT based earlycon support of/fdt: add FDT serial scanning for earlycon of/fdt: add FDT address translation support serial: earlycon: add DT support ...
| * | | | of: consolidate linker section OF match table declarationsRob Herring2014-05-201-1/+1
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We now have several OF match tables using linker sections that are nearly the same definition. The only variation is the callback function prototype. Create a common define for creating linker section OF match table entries which each table declaration can use. Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
* | | | clocksource: versatile: Use sched_clock_register()Thomas Gleixner2014-06-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly merged versatile sched clock support uses a deprecated interface. Of course that patch got routed through the ARM tree instead of going through the relevant maintainer tree. Use the proper interface so we can get rid of the cruft. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge tag 'drivers-for-3.16' of ↵Linus Torvalds2014-06-021-0/+8
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next Pull ARM SoC driver changes from Olof Johansson: "SoC-near driver changes that we're merging through our tree. Mostly because they depend on other changes we have staged, but in some cases because the driver maintainers preferred that we did it this way. This contains a largeish cleanup series of the omap_l3_noc bus driver, cpuidle rework for Exynos, some reset driver conversions and a long branch of TI EDMA fixes and cleanups, with more to come next release. The TI EDMA cleanups is a shared branch with the dmaengine tree, with a handful of Davinci-specific fixes on top. After discussion at last year's KS (and some more on the mailing lists), we are here adding a drivers/soc directory. The purpose of this is to keep per-vendor shared code that's needed by different drivers but that doesn't fit into the MFD (nor drivers/platform) model. We expect to keep merging contents for this hierarchy through arm-soc so we can keep an eye on what the vendors keep adding here and not making it a free-for-all to shove in crazy stuff" * tag 'drivers-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits) cpufreq: exynos: Fix driver compilation with ARCH_MULTIPLATFORM tty: serial: msm: Remove direct access to GSBI power: reset: keystone-reset: introduce keystone reset driver Documentation: dt: add bindings for keystone pll control controller Documentation: dt: add bindings for keystone reset driver soc: qcom: fix of_device_id table ARM: EXYNOS: Fix kernel panic when unplugging CPU1 on exynos ARM: EXYNOS: Move the driver to drivers/cpuidle directory ARM: EXYNOS: Cleanup all unneeded headers from cpuidle.c ARM: EXYNOS: Pass the AFTR callback to the platform_data ARM: EXYNOS: Move S5P_CHECK_SLEEP into pm.c ARM: EXYNOS: Move the power sequence call in the cpu_pm notifier ARM: EXYNOS: Move the AFTR state function into pm.c ARM: EXYNOS: Encapsulate the AFTR code into a function ARM: EXYNOS: Disable cpuidle for exynos5440 ARM: EXYNOS: Encapsulate boot vector code into a function for cpuidle ARM: EXYNOS: Pass wakeup mask parameter to function for cpuidle ARM: EXYNOS: Remove ifdef for scu_enable in pm ARM: EXYNOS: Move scu_enable in the cpu_pm notifier ARM: EXYNOS: Use the cpu_pm notifier for pm ...
| * \ \ \ Merge tag 'samsung-drivers' of ↵Olof Johansson2014-05-211-0/+8
| |\ \ \ \ | | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers Merge "Samsung driver update for 3.16" from Kukjin Kim: exynos_mct update for v3.16 - register sched_clock callback to use clocksource mct-frc * tag 'samsung-drivers' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: clocksource: exynos_mct: register sched_clock callback Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | | clocksource: exynos_mct: register sched_clock callbackVincent Guittot2014-05-021-0/+8
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the clocksource mct-frc for sched_clock Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
* | | | Merge tag 'boards-for-3.16' of ↵Linus Torvalds2014-06-023-680/+1305
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next Pull ARM SoC board support updates from Olof Johansson: "The bulk of this branch is updates for Renesas Shmobile. They are still doing some enablement for classic boards first, and then come up with DT bindings when they've had a chance to learn more about the hardware. Not necessarily a bad way to go about it, and they're looking at moving some of the temporary board code resulting from it to drivers/staging instead to avoid the churn here. As a result of the shmobile clock cleanups, we end up merging quite a bit of SH code here as well. We ended up merging it here instead of in the cleanup branch due to the other board changes depending on it" * tag 'boards-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (130 commits) ARM: davinci: remove checks for CONFIG_USB_MUSB_PERIPHERAL ARM: add drivers for Colibri T30 to multi_v7_defconfig ARM: shmobile: Remove Genmai reference DTS ARM: shmobile: Let Genmai multiplatform boot with Genmai DTB ARM: shmobile: Sync Genmai DTS with Genmai reference DTS ARM: shmobile: genmai-reference: Remove legacy clock support ARM: shmobile: Remove non-multiplatform Genmai reference support ARM: configs: enable XHCI mvebu support in multi_v7_defconfig ARM: OMAP: replace checks for CONFIG_USB_GADGET_OMAP ARM: OMAP: AM3517EVM: remove check for CONFIG_PANEL_SHARP_LQ043T1DG01 ARM: OMAP: SX1: remove check for CONFIG_SX1_OLD_FLASH ARM: OMAP: remove some dead code ARM: OMAP: omap3stalker: remove two Kconfig macros ARM: tegra: tegra_defconfig updates ARM: shmobile: r7s72100: use workaround for non DT-clocks ARM: shmobile: Add forward declaration of struct clk to silence warning ARM: shmobile: r7s72100: remove SPI DT clocks from legacy clock support ARM: shmobile: r7s72100: add spi clocks to dtsi ARM: shmobile: r7s72100: remove I2C DT clocks from legacy clock support ARM: shmobile: r7s72100: add i2c clocks to dtsi ...
| * \ \ \ Merge branch 'depends/clockevents-cleanups' into next/boardsOlof Johansson2014-05-213-680/+1305
| |\ \ \ \ | | |/ / / | |/| | / | | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bringing in as an external dependency that the renesas/clock-cleanup2 branch relies on. * depends/clockevents-cleanups: (52 commits) clocksource: sh_mtu2: Sort headers alphabetically clocksource: sh_mtu2: Remove FSF mail address from GPL notice clocksource: sh_mtu2: Rename clock to "fck" in the non-legacy case clocksource: sh_mtu2: Add support for multiple channels per device clocksource: sh_mtu2: Hardcode MTU2 clock event rating to 200 clocksource: sh_mtu2: Set cpumask to cpu_possible_mask clocksource: sh_mtu2: Replace hardcoded register values with macros clocksource: sh_mtu2: Allocate channels dynamically clocksource: sh_mtu2: Replace kmalloc + memset with kzalloc clocksource: sh_mtu2: Add index to struct sh_mtu2_channel clocksource: sh_mtu2: Add memory base to sh_mtu2_channel structure clocksource: sh_mtu2: Constify name argument to sh_mtu2_register() clocksource: sh_mtu2: Split channel setup to separate function clocksource: sh_mtu2: Rename struct sh_mtu2_priv to sh_mtu2_device clocksource: sh_mtu2: Split channel fields from sh_mtu2_priv clocksource: sh_mtu2: Turn sh_mtu2_priv fields into local variables clocksource: sh_mtu2: Use request_irq() instead of setup_irq() clocksource: sh_tmu: Sort headers alphabetically clocksource: sh_tmu: Remove FSF mail address from GPL notice clocksource: sh_tmu: Rename clock to "fck" in the non-legacy case ... Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | clocksource: sh_mtu2: Sort headers alphabeticallyLaurent Pinchart2014-04-161-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This helps locating duplicates and inserting new headers. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Remove FSF mail address from GPL noticeLaurent Pinchart2014-04-161-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not include the paragraph about writing to the Free Software Foundation's mailing address from the sample GPL notice. The FSF has changed addresses in the past, and may do so again. Linux already includes a copy of the GPL. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Rename clock to "fck" in the non-legacy caseLaurent Pinchart2014-04-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sh_mtu2 driver gets the MTU2 functional clock using a connection ID of "mtu2_fck". While all SH SoCs create clock lookup entries with a NULL device ID and a "mtu2_fck" connection ID, the ARM SoCs use the device ID only with a NULL connection ID. This works on legacy platforms but will break on ARM with DT boot. Fix the situation by using a connection ID of "fck" in the non-legacy platform data case. Clock lookup entries will be renamed to use the device ID as well as the connection ID as platforms get moved to new platform data. The legacy code will eventually be dropped, leaving us with device ID based clock lookup, compatible with DT boot. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Add support for multiple channels per deviceLaurent Pinchart2014-04-161-54/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MTU2 hardware devices can support multiple channels, with global registers and per-channel registers. The sh_mtu2 driver currently models the hardware with one Linux device per channel. This model makes it difficult to handle global registers in a clean way. Add support for a new model that uses one Linux device per timer with multiple channels per device. This requires changes to platform data, add new channel configuration fields. Support for the legacy model is kept and will be removed after all platforms switch to the new model. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Hardcode MTU2 clock event rating to 200Laurent Pinchart2014-04-161-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All boards use clock event ratings of 200 for the MTU2, hardcode it in the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Set cpumask to cpu_possible_maskLaurent Pinchart2014-04-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The MTU2 is not tied to CPU0, make it usable on any CPU. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Replace hardcoded register values with macrosLaurent Pinchart2014-04-161-6/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Define symbolic macros for all used registers bits. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Allocate channels dynamicallyLaurent Pinchart2014-04-161-7/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This prepares the driver for multi-channel support. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Replace kmalloc + memset with kzallocLaurent Pinchart2014-04-161-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | One kzalloc a day keeps the bugs away. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Add index to struct sh_mtu2_channelLaurent Pinchart2014-04-161-9/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the index as the timer start/stop bit and when printing messages to identify the channel. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Add memory base to sh_mtu2_channel structureLaurent Pinchart2014-04-161-14/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The channel memory base is channel-specific, add it to the channel structure in preparation for support of multiple channels per device. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Constify name argument to sh_mtu2_register()Laurent Pinchart2014-04-161-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The name argument is assigned to const structure fields only, constify it. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Split channel setup to separate functionLaurent Pinchart2014-04-161-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the channel setup code from sh_mtu2_setup to a new sh_mtu2_setup_channel function and call it from sh_mtu2_setup. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Rename struct sh_mtu2_priv to sh_mtu2_deviceLaurent Pinchart2014-04-161-32/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Channel data is private as well, rename priv to device to make the distrinction between the core device and the channels clearer. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Split channel fields from sh_mtu2_privLaurent Pinchart2014-04-161-56/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create a new sh_mtu2_channel structure to hold the channel-specific fields in preparation for multiple channels per device support. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Turn sh_mtu2_priv fields into local variablesLaurent Pinchart2014-04-161-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rate and periodic fields are used in a single function only, as local variables. Remove them from the structure. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_mtu2: Use request_irq() instead of setup_irq()Laurent Pinchart2014-04-161-14/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver claims it needs to register an interrupt handler too early for request_irq(). This might have been true in the past, but the only meaningful difference between request_irq() and setup_irq() today is an additional kzalloc() call in request_irq(). As the driver calls kmalloc() itself we know that the slab allocator is available, we can thus switch to request_irq(). Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Wolfram Sang <wsa@sang-engineering.com>
| | * | clocksource: sh_tmu: Sort headers alphabeticallyLaurent Pinchart2014-04-161-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | This helps locating duplicates and inserting new headers. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Remove FSF mail address from GPL noticeLaurent Pinchart2014-04-161-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not include the paragraph about writing to the Free Software Foundation's mailing address from the sample GPL notice. The FSF has changed addresses in the past, and may do so again. Linux already includes a copy of the GPL. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Rename clock to "fck" in the non-legacy caseLaurent Pinchart2014-04-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sh_tmu driver gets the TMU functional clock using a connection ID of "tmu_fck". While all SH SoCs create clock lookup entries with a NULL device ID and a "tmu_fck" connection ID, the ARM SoCs use the device ID only with a NULL connection ID. This works on legacy platforms but will break on ARM with DT boot. Fix the situation by using a connection ID of "fck" in the non-legacy platform data case. Clock lookup entries will be renamed to use the device ID as well as the connection ID as platforms get moved to new platform data. The legacy code will eventually be dropped, leaving us with device ID based clock lookup, compatible with DT boot. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Add support for multiple channels per deviceLaurent Pinchart2014-04-161-61/+152
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TMU hardware devices can support multiple channels, with global registers and per-channel registers. The sh_tmu driver currently models the hardware with one Linux device per channel. This model makes it difficult to handle global registers in a clean way. Add support for a new model that uses one Linux device per timer with multiple channels per device. This requires changes to platform data, add new channel configuration fields. Support for the legacy model is kept and will be removed after all platforms switch to the new model. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Hardcode TMU clock event and source ratings to 200Laurent Pinchart2014-04-161-12/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | All boards use clock event and clock source ratings of 200 for the TMU, hardcode it in the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Replace hardcoded register values with macrosLaurent Pinchart2014-04-161-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | Define symbolic macros for all used registers bits. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
| | * | clocksource: sh_tmu: Allocate channels dynamicallyLaurent Pinchart2014-04-161-7/+20
| | | | | | | | | | | | | | | | | | | | | | | | This prepares the driver for multi-channel support. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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