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2014-06-02Merge tag 'drivers-for-3.16' of ↵Linus Torvalds
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 ...
2014-05-21Merge branch 'sunxi/drivers-for-3.16' of https://github.com/mripard/linux ↵Olof Johansson
into next/drivers Merge "Allwinner drivers changes for 3.16" from Maxime Ripard: Reset drivers for the A31, that have been merged with reset maintainer's Acked-by. * 'sunxi/drivers-for-3.16' of https://github.com/mripard/linux: reset: sunxi: allow MFD subdevices probe reset: sunxi: document sunxi's reset controllers bindings Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-21driver: reset: sti: add keyscan for stih416Gabriel FERNANDEZ
Add keyscan reset on stih416 reset controller. Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Giuseppe Condorelli <giuseppe.condorelli@st.com> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
2014-05-21driver: reset: sti: add keyscan for stih415Gabriel FERNANDEZ
Add keyscan reset on stih415 reset controller. Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Giuseppe Condorelli <giuseppe.condorelli@st.com> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
2014-05-15reset: sunxi: allow MFD subdevices probeBoris BREZILLON
The current implementation uses sunxi_reset_init function for both early init and platform device probe. The sunxi_reset_init function uses DT to retrieve device resources, which will be an issue if reset controllers are registered from an MFD device that define resources from mfd_cell definition. Moreover, we can make of devm functions when we're in the probe context. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-04-25reset: add driver for socfpgaSteffen Trumtrar
Add a reset-controller driver for the socfpga platform. The reset-controller has four banks with up to 32 entries all encapsulated in one module block. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Dinh Nguyen <dinguyen@altera.com> --- Notes: Changes since v2: - remove superfluous ret in probe function - add Acked-by Changes since v1: - use BITS_PER_LONG everywhere instead of MAX_BANK_WIDTH - print pdev->dev.of_node->full_name on error - use proper IS_ERR/PTR_ERR
2014-03-27Merge branch 'reset/for_v3.15' of git://git.pengutronix.de/git/pza/linux ↵Arnd Bergmann
into next/drivers Merge "reset controller fixes and updates" from Philipp Zabel: * 'reset/for_v3.15' of git://git.pengutronix.de/git/pza/linux: reset: Add optional resets and stubs reset: Add of_reset_control_get reset: Mark function as static and remove unused function in core.c reset: allow drivers to request probe deferral Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-03-11drivers: reset: stih416: add softreset controllerSrinivas Kandagatla
This patch adds softreset controller for STiH416 SOC, soft reset controller is based on system configuration registers which are mapped via regmap. This reset controller does not have any feedback or acknowledgement. With this patch a new device "st,stih416-softreset" is registered with system configuration registers based reset controller that controls the softreset state of the hardware such as Ethernet, IRB. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-03-11drivers: reset: stih415: add softreset controllerSrinivas Kandagatla
This patch adds softreset controller for STiH415 SOC, soft reset controller is based on system configuration registers which are mapped via regmap. This reset controller does not have any feedback or acknowledgement. With this patch a new device "st,stih415-softreset" is registered with system configuration registers based reset controller that controls the softreset state of the hardware such as Ethernet, IRB. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-03-11drivers: reset: Reset controller driver for STiH416Stephen Gallimore
This patch adds a reset controller platform driver for the STiH416 SoC. This initial version provides a compatible driver for the "st,stih416-powerdown" device, which registers a system configuration register based reset controller that controls the powerdown state of hardware such as the on-chip USB host controllers. Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-03-11drivers: reset: Reset controller driver for STiH415Stephen Gallimore
This patch adds a reset controller platform driver for the STiH415 SoC. This initial version provides a compatible driver for the "st,stih415-powerdown" device, which registers a system configuration register based reset controller that controls the powerdown state of hardware such as the on-chip USB host controllers. Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-03-11drivers: reset: STi SoC system configuration reset controller supportStephen Gallimore
This patch adds a reset controller implementation for STMicroelectronics STi family SoCs; it allows a group of related reset like controls found in multiple system configuration registers to be represented by a single controller device. System configuration registers are accessed through the regmap framework and the mfd/syscon driver. The implementation optionally supports waiting for the reset action to be acknowledged in a separate status register and supports both active high and active low reset lines. These properties are common across all the reset channels in a specific reset controller instance, hence all channels in a paritcular controller are expected to behave in the same way. Signed-off-by: Stephen Gallimore <stephen.gallimore@st.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-02-03reset: Add of_reset_control_getMaxime Ripard
In some cases, you might need to deassert from reset an hardware block that doesn't associated to a struct device (CPUs, timers, etc.). Add a small helper to retrieve the reset controller from the device tree without the need to pass a struct device. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-02-03reset: Mark function as static and remove unused function in core.cRashika Kheria
Mark function of_reset_simple_xlate() as static in core.c because it is not used outside this file. Also, remove functions devm_reset_control_put() and devm_reset_control_match() because they are unused. This eliminates the following warnings in core.c: drivers/reset/core.c:46:5: warning: no previous prototype for ‘of_reset_simple_xlate’ [-Wmissing-prototypes] drivers/reset/core.c:262:6: warning: no previous prototype for ‘devm_reset_control_put’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-02-03reset: allow drivers to request probe deferralPhilipp Zabel
If the requested reset controller is not yet available, have reset_control_get and device_reset return -EPROBE_DEFER so the driver can decide to request probe deferral. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Stephen Warren <swarren@nvidia.com>
2013-11-22reset: Add Allwinner SoCs Reset Controller DriverMaxime Ripard
The Allwinner A31 and most of the other Allwinner SoCs have an IP maintaining a few other IPs in the SoC in reset by default. Among these IPs are the A31's High Speed Timers, hence why we can't use the regular driver construct in every cases, and need to call the registering function directly during machine initialisation. Apart from this, the implementation is fairly straightforward, and could easily be moved to a generic MMIO-based reset controller driver if the need ever arise. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2013-04-12reset: NULL deref on allocation failureDan Carpenter
"rstc" is NULL here and we should use "rcdev" instead of "rstc->rcdev". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2013-04-12reset: Add reset controller APIPhilipp Zabel
This adds a simple API for devices to request being reset by separate reset controller hardware and implements the reset signal device tree binding. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Pavel Machek <pavel@ucw.cz>