linux/drivers/reset, branch v5.0

reset: uniphier-glue: Add AHCI reset control support in glue layer

2019-01-07T15:38:51Z

Add a reset line included in AHCI glue layer to enable AHCI core implemented in UniPhier SoCs. Signed-off-by: Kunihiko Hayashi Signed-off-by: Philipp Zabel

reset: uniphier-usb3: Rename to reset-uniphier-glue

2019-01-07T15:38:51Z

This driver works for controlling the reset lines including USB3 glue layer, however, this can be applied to other glue layers. Now this patch renames the driver from "reset-uniphier-usb3" to "reset-uniphier-glue". At the same time, this changes CONFIG_RESET_UNIPHIER_USB3 to CONFIG_RESET_UNIPHIER_GLUE. Signed-off-by: Kunihiko Hayashi Signed-off-by: Philipp Zabel

reset: socfpga: add an early reset driver for SoCFPGA

2019-01-07T15:38:50Z

Create a separate reset driver that uses the reset operations in reset-simple. The reset driver for the SoCFPGA platform needs to register early in order to be able bring online timers that needed early in the kernel bootup. We do not need this early reset driver for Stratix10, because on arm64, Linux does not need the timers are that in reset. Linux is able to run just fine with the internal armv8 timer. Thus, we use a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform. The Stratix10 platform will continue to use the reset-simple platform driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use the early reset driver. Signed-off-by: Dinh Nguyen [p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple] Signed-off-by: Philipp Zabel

reset: fix null pointer dereference on dev by dev_name

2019-01-07T15:38:26Z

The call to dev_name will dereference dev, however, dev is later being null checked, so there is a possibility of a null pointer dereference on dev by the call to dev_name. Fix this by null checking dev first before the call to dev_name Detected by CoverityScan, CID#1475475 ("Dereference before null check") Fixes: 2a6cb2b1d83b ("reset: Add reset_control_get_count()") Signed-off-by: Colin Ian King Signed-off-by: Philipp Zabel

reset: Add reset_control_get_count()

2019-01-07T15:38:26Z

Currently the reset core has internal support for counting the number of resets for a device described in DT. Generalize this to devices using lookup resets, and export it for public use. This will be used by generic drivers that need to be sure a device is controlled by a single, dedicated reset line (e.g. vfio-platform). Signed-off-by: Geert Uytterhoeven [p.zabel@pengutronix.de: fixed a typo in reset_control_get_count comment] Signed-off-by: Philipp Zabel

ARC: HSDK: improve reset driver

2019-01-07T15:38:26Z

As for today HSDK reset driver implements only .reset() callback. In case of driver which implements one of standard reset controller usage pattern (call *_deassert() in probe(), call *_assert() in remove()) that leads to inoperability of this reset driver. Improve HSDK reset driver by calling .reset() callback inside of .deassert() callback to avoid each reset controller user adaptation for work with both reset methods (reset() and {.assert() & .deassert()} pair) Signed-off-by: Eugeniy Paltsev Signed-off-by: Philipp Zabel

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2018-10-29T22:16:01Z

Pull ARM SoC driver updates from Arnd Bergmann: "The most noteworthy SoC driver changes this time include: - The TEE subsystem gains an in-kernel interface to access the TEE from device drivers. - The reset controller subsystem gains a driver for the Qualcomm Snapdragon 845 Power Domain Controller. - The Xilinx Zynq platform now has a firmware interface for its platform management unit. This contains a firmware "ioctl" interface that was a little controversial at first, but the version we merged solved that by not exposing arbitrary firmware calls to user space. - The Amlogic Meson platform gains a "canvas" driver that is used for video processing and shared between different high-level drivers. The rest is more of the usual, mostly related to SoC specific power management support and core drivers in drivers/soc: - Several Renesas SoCs (RZ/G1N, RZ/G2M, R-Car V3M, RZ/A2M) gain new features related to power and reset control. - The Mediatek mt8183 and mt6765 SoC platforms gain support for their respective power management chips. - A new driver for NXP i.MX8, which need a firmware interface for power management. - The SCPI firmware interface now contains support estimating power usage of performance states - The NVIDIA Tegra "pmc" driver gains a few new features, in particular a pinctrl interface for configuring the pads. - Lots of small changes for Qualcomm, in particular the "smem" device driver. - Some cleanups for the TI OMAP series related to their sysc controller. Additional cleanups and bugfixes in SoC specific drivers include the Meson, Keystone, NXP, AT91, Sunxi, Actions, and Tegra platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (129 commits) firmware: tegra: bpmp: Implement suspend/resume support drivers: clk: Add ZynqMP clock driver dt-bindings: clock: Add bindings for ZynqMP clock driver firmware: xilinx: Add zynqmp IOCTL API for device control Documentation: xilinx: Add documentation for eemi APIs MAINTAINERS: imx: include drivers/firmware/imx path firmware: imx: add misc svc support firmware: imx: add SCU firmware driver support reset: Fix potential use-after-free in __of_reset_control_get() dt-bindings: arm: fsl: add scu binding doc soc: fsl: qbman: add interrupt coalesce changing APIs soc: fsl: bman_portals: defer probe after bman's probe soc: fsl: qbman: Use last response to determine valid bit soc: fsl: qbman: Add 64 bit DMA addressing requirement to QBMan soc: fsl: qbman: replace CPU 0 with any online CPU in hotplug handlers soc: fsl: qbman: Check if CPU is offline when initializing portals reset: qcom: PDC Global (Power Domain Controller) reset controller dt-bindings: reset: Add PDC Global binding for SDM845 SoCs reset: Grammar s/more then once/more than once/ bus: ti-sysc: Just use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS ...

reset: Fix potential use-after-free in __of_reset_control_get()

2018-10-08T13:25:21Z

Calling of_node_put() decreases the reference count of a device tree object, and may free some data. However, the of_phandle_args structure embedding it is passed to reset_controller_dev.of_xlate() after that, so it may still be accessed. Move the call to of_node_put() down to fix this. Signed-off-by: Geert Uytterhoeven [p.zabel@pengutronix.de: moved of_node_put after mutex_unlock] Signed-off-by: Philipp Zabel

reset: imx7: Add PCIE_CTRL_APPS_TURNOFF

2018-10-05T08:56:19Z

This is required for the imx pci driver to send the PME_Turn_Off TLP. Signed-off-by: Leonard Crestez Signed-off-by: Lorenzo Pieralisi Acked-by: Philipp Zabel Acked-by: Rob Herring

reset: qcom: PDC Global (Power Domain Controller) reset controller

2018-10-05T08:33:44Z

Add reset controller for SDM845 SoCs to control reset signals provided by PDC Global for Modem, Compute, Display, GPU, Debug, AOP, Sensors, Audio, SP and APPS Signed-off-by: Sibi Sankar Reviewed-by: Bjorn Andersson Signed-off-by: Philipp Zabel