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2018-08-24iommu/rockchip: Handle errors returned from PM frameworkMarc Zyngier1-6/+15
pm_runtime_get_if_in_use can fail: either PM has been disabled altogether (-EINVAL), or the device hasn't been enabled yet (0). Sadly, the Rockchip IOMMU driver tends to conflate the two things by considering a non-zero return value as successful. This has the consequence of hiding other bugs, so let's handle this case throughout the driver, with a WARN_ON_ONCE so that we can try and work out what happened. Fixes: 0f181d3cf7d98 ("iommu/rockchip: Add runtime PM support") Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2018-08-24arm64: rockchip: Force CONFIG_PM on Rockchip systemsMarc Zyngier1-0/+1
A number of the Rockchip-specific drivers (IOMMU, display controllers) are now assuming that CONFIG_PM is set, and may completely misbehave if that's not the case. Since there is hardly any reason for this configuration option not to be selected anyway, let's require it (in the same way Tegra already does). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2018-08-24ARM: rockchip: Force CONFIG_PM on Rockchip systemsMarc Zyngier1-0/+1
A number of the Rockchip-specific drivers (IOMMU, display controllers) are now assuming that CONFIG_PM is set, and may completely misbehave if that's not the case. Since there is hardly any reason for this configuration option not to be selected anyway, let's require it (in the same way Tegra already does). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2018-08-24arm64: dts: Fix various entry-method properties to reflect documentationAmit Kucheria11-12/+12
The idle-states binding documentation[1] mentions that the 'entry-method' property is required on 64-bit platforms and must be set to "psci". commit a13f18f59d26 ("Documentation: arm: Fix typo in the idle-states bindings examples") attempted to fix this earlier but clearly more is needed. Fix the cpu-capacity.txt documentation that uses the incorrect value so we don't get copy-paste errors like these. Clarify the language in idle-states.txt by removing the reference to the psci bindings that might be causing this confusion. Finally, fix devicetrees of various boards to reflect current documentation. [1] Documentation/devicetree/bindings/arm/idle-states.txt (see idle-states node) Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2018-07-26drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug testsSudeep Holla1-34/+49
Commit 7f9545aa1a91 ("arm64: smp: remove cpu and numa topology information when hotplugging out CPU") updates the cpu topology when the CPU is hotplugged out. However the PSCI checker code uses the topology_core_cpumask pointers for some of the cpu hotplug testing. Since the pointer to the core_cpumask of the first CPU in the group is used, which when that CPU itself is hotpugged out is just set to itself, the testing terminates after that particular CPU is tested out. But the intention of this tests is to cover all the CPU in the group. In order to support that, we need to stash the topology_core_cpumask before the start of the test and use that value instead of pointer to a cpumask which will be updated on CPU hotplug. Fixes: 7f9545aa1a91a9a4 ("arm64: smp: remove cpu and numa topology information when hotplugging out CPU") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2018-07-24soc: fsl: cleanup Kconfig menuLi Yang3-3/+6
Put NXP/Freescale QorIQ SoC drivers under a menu and make the item naming more aligned. Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24soc: fsl: dpio: Convert DPIO documentation to .rstRoy Pledge2-3/+27
Convert the Datapath I/O documentation to .rst format and move to the Documation/networking/dpaa2 directory Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Reviewed-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24staging: fsl-mc: Remove remaining filesRoy Pledge6-22/+0
Remove the staging/drivers/fsl-mc directory from the staging area now that all the components have been moved to the main kernel areas. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Reviewed-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24staging: fsl-mc: Move DPIO from staging to drivers/soc/fslRoy Pledge20-20/+20
Move the NXP DPIO (Datapath I/O Driver) out of the drivers/staging directory and into the drivers/soc/fsl directory. The DPIO driver enables access to Queue and Buffer Manager (QBMAN) hardware on NXP DPAA2 devices. This is a prerequisite to moving the DPAA2 Ethernet driver out of staging. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Reviewed-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24staging: fsl-dpaa2: eth: move generic FD defines to DPIOHoria Geantă3-15/+19
Previous commits: commit 6e2387e8f19e ("staging: fsl-dpaa2/eth: Add Freescale DPAA2 Ethernet driver") commit 39163c0ce0f4 ("staging: fsl-dpaa2/eth: Errors checking update") have added bits that are not specific to the WRIOP accelerator. Move these where they belong (in DPIO) such that other accelerators can make use of them. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Acked-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24soc: fsl: qe: gpio: Add qe_gpio_set_multipleJoakim Tjernlund1-0/+28
This cousin to gpio-mpc8xxx was lacking a multiple pins method, add one. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-07-24usb: host: exynos: Remove support for Exynos5440Krzysztof Kozlowski2-13/+0
The Exynos5440 is not actively developed, there are no development boards available and probably there are no real products with it. Remove wide-tree support for Exynos5440. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-24clk: samsung: Remove support for Exynos5440Krzysztof Kozlowski4-240/+0
The Exynos5440 is not actively developed, there are no development boards available and probably there are no real products with it. Remove wide-tree support for Exynos5440. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-07-23reset: imx7: Fix always writing bits as 0Leonard Crestez1-1/+1
Right now the only user of reset-imx7 is pci-imx6 and the reset_control_assert and deassert calls on pciephy_reset don't toggle the PCIEPHY_BTN and PCIEPHY_G_RST bits as expected. Fix this by writing 1 or 0 respectively. The reference manual is not very clear regarding SRC_PCIEPHY_RCR but for other registers like MIPIPHY and HSICPHY the bits are explicitly documented as "1 means assert, 0 means deassert". The values are still reversed for IMX7_RESET_PCIE_CTRL_APPS_EN. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-07-21soc: qcom: rmtfs-mem: fix memleak in probe error pathsJohan Hovold1-2/+1
Make sure to set the mem device release callback before calling put_device() in a couple of probe error paths so that the containing object also gets freed. Fixes: d1de6d6c639b ("soc: qcom: Remote filesystem memory driver") Cc: stable <stable@vger.kernel.org> # 4.15 Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21soc: qcom: llc-slice: Add missing MODULE_LICENSE()Niklas Cassel1-0/+3
Add missing MODULE_LICENSE(). According to the SPDX-License-Identifier, the license is GPL v2. Fixes the following warning: WARNING: modpost: missing MODULE_LICENSE() in drivers/soc/qcom/llcc-slice.o Fixes: a3134fb ("drivers: soc: Add LLCC driver") Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh: fix unwanted error check for get_tcs_of_type()Raju P.L.S.S.S.N1-4/+2
The patch fixes the bug reported by Dan Carpenter. It removes the unnecessary err check for ‘tcs’ reported by static checker warning: drivers/soc/qcom/rpmh-rsc.c:111 tcs_invalidate() warn: 'tcs' isn't an ERR_PTR See also: drivers/soc/qcom/rpmh-rsc.c:178 get_tcs_for_msg() warn: 'tcs' isn't an ERR_PTR drivers/soc/qcom/rpmh-rsc.c:180 get_tcs_for_msg() warn: 'tcs' isn't an ERR_PTR https://www.spinics.net/lists/linux-soc/msg04624.html Fixes: 9a3afcf ("drivers: qcom: rpmh-rsc: allow invalidation of sleep/wake TCS") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Reviewed-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: fix the loop index check in get_req_from_tcsRaju P.L.S.S.S.N1-1/+1
get_req_from_tcs introduced in patch[1] returns tcs_request from tcs_group. The size of tcs (of type - tcs_group) array in rsc_drv is TCS_TYPE_NR. So the loop index needs to be iterated up to TCS_TYPE_NR only. [1] https://patchwork.kernel.org/patch/10477547/ Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21firmware: qcom: scm: add a dummy qcom_scm_assign_mem()Niklas Cassel1-0/+4
Add a dummy qcom_scm_assign_mem() to enable building drivers when CONFIG_COMPILE_TEST=y && CONFIG_QCOM_SCM=n. All other qcom_scm_* functions already have a dummy version. Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: Check cmd_db_ready() to help childrenDouglas Anderson1-0/+13
Children of RPMh will need access to cmd_db. Rather than having each child have code to check if cmd_db is ready let's add the check to RPMh. With this we'll be able to remove this boilerplate code from clk-rpmh.c and qcom-rpmh-regulator.c. Neither of these files has landed upstream yet but patches are pretty far along. === This code is based upon v11 of Lina and Raju's RPMh series. Suggested-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: allow active requests from wake TCSLina Iyer1-2/+21
Some RSCs may only have sleep and wake TCS, i.e, there is no dedicated TCS for active mode request, but drivers may still want to make active requests from these RSCs. In such cases re-purpose the wake TCS to send active state requests. The requirement for this is that the driver is aware that the wake TCS is being repurposed to send active request, hence the sleep and wake TCSes be invalidated before the active request is sent. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh: add support for batch RPMH requestLina Iyer4-2/+168
Platform drivers need make a lot of resource state requests at the same time, say, at the start or end of an usecase. It can be quite inefficient to send each request separately. Instead they can give the RPMH library a batch of requests to be sent and wait on the whole transaction to be complete. rpmh_write_batch() is a blocking call that can be used to send multiple RPMH command sets. Each RPMH command set is set asynchronously and the API blocks until all the command sets are complete and receive their tx_done callbacks. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh: allow requests to be sent asynchronouslyLina Iyer3-0/+60
Platform drivers that want to send a request but do not want to block until the RPMH request completes have now a new API - rpmh_write_async(). The API allocates memory and send the requests and returns the control back to the platform driver. The tx_done callback from the controller is handled in the context of the controller's thread and frees the allocated memory. This API allows RPMH requests from atomic contexts as well. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh: cache sleep/wake state requestsLina Iyer4-7/+216
Active state requests are sent immediately to the RSC controller, while sleep and wake state requests are cached in this driver to avoid taxing the RSC controller repeatedly. The cached values will be sent to the controller when the rpmh_flush() is called. Generally, flushing is a system PM activity and may be called from the system PM drivers when the system is entering suspend or deeper sleep modes during cpuidle. Also allow invalidating the cached requests, so they may be re-populated again. Signed-off-by: Lina Iyer <ilina@codeaurora.org> [rplsssn: remove unneeded semicolon, address line over 80chars error] Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Reviewed-by: Evan Green <evgreen@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: allow invalidation of sleep/wake TCSLina Iyer1-0/+44
Allow sleep and wake commands to be cleared from the respective TCSes, so that they can be re-populated. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: write sleep/wake requests to TCSLina Iyer2-0/+129
Sleep and wake requests are sent when the application processor subsystem of the SoC is entering deep sleep states like in suspend. These requests help lower the system power requirements when the resources are not in use. Sleep and wake requests are written to the TCS slots but are not triggered at the time of writing. The TCS are triggered by the firmware after the last of the CPUs has executed its WFI. Since these requests may come in different batches of requests, it is the job of this controller driver to find and arrange the requests into the available TCSes. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Reviewed-by: Evan Green <evgreen@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh: add RPMH helper functionsLina Iyer5-3/+179
Sending RPMH requests and waiting for response from the controller through a callback is common functionality across all platform drivers. To simplify drivers, add a library functions to create RPMH client and send resource state requests. rpmh_write() is a synchronous blocking call that can be used to send active state requests. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-07-21drivers: qcom: rpmh-rsc: log RPMH requests in FTRACELina Iyer3-1/+93
Log sent RPMH requests and interrupt responses in FTRACE. Signed-off-by: Lina Iyer <ilina@codeaurora.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> [rplsssn@codeaurora.org: rebase to v4.18-rc1 & fix merge conflict] Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>