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2015-10-15ARM: berlin: dts: add CLKID_CPU for BG2QSebastian Hesselbarth1-0/+1
Marvell Berlin BG2Q SoC also has a clock for the CPU, add a corresponding CLKID to the dt-binding include. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
2015-10-14soc: qcom: smem: Move RPM message ram out of smem DT nodeStephen Boyd2-49/+41
SMEM is a software construct built on top of a DDR reserved region and sometimes a device memory region called RPM message ram. Having the RPM message ram in the smem DT node's reg property leads to the smem node being located in different places depending on if the message ram is being used or not. Let's add a qcom specific property, qcom,rpm-msg-ram, and point to the device memory from the SMEM node via a phandle. As SMEM is a software construct, it really needs to reside at the root of the DT regardless of whether it's using the message ram or not. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd-rpm: Correct the active vs sleep state flaggingBjorn Andersson1-1/+1
The BIT() was incorrectly inherited from family A and should not be used on family B where the state is denoted by an enum. Reported-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Tested-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: delete unneeded of_node_putJulia Lawall1-3/+1
Device node iterators perform an of_node_put on each iteration, so putting an of_node_put before a continue results in a double put. A simplified version of the semantic match that finds this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; iterator i; @@ i(..., child, ...) { ... when != of_node_get(child) * of_node_put(child); ... * continue; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14firmware: qcom-scm: build for correct architecture levelArnd Bergmann1-1/+1
The ".arch_extension sec" directive is only available on ARMv6 or higher, so if we enable the SCM driver while building a kernel for an older CPU, we get a build error: /tmp/ccUyhMOY.s:130: Error: selected processor does not support ARM mode `smc #0' /tmp/ccUyhMOY.s:216: Error: selected processor does not support ARM mode `smc #0' /tmp/ccUyhMOY.s:373: Error: selected processor does not support ARM mode `smc #0' make[4]: *** [drivers/firmware/qcom_scm-32.o] Error 1 This changes the Makefile so we pass the ARMv7 architecture level both for the check and for the actual compilation of the scm driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Correct SMEM items for upper channelsBjorn Andersson1-2/+2
Update the SMEM items for the second set of SMD channels, as these where incorrect. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14qcom-scm: add missing prototype for qcom_scm_is_available()Rob Clark1-0/+2
Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14qcom-scm: fix endianess issue in __qcom_scm_is_call_availableRob Clark1-3/+3
Signed-off-by: Rob Clark <robdclark@gmail.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Reject send of too big packetsBjorn Andersson1-0/+4
Attempting to find room for a packet that's bigger than the fifo will never succeed and the calling process will be sleeping forever in the loop, waiting for enough room. So fail early instead. Reported-by: Courtney Cavin <courtney.cavin@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Reviewed-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Handle big endian CPUsStephen Boyd1-65/+116
The smd structures are always in little endian, but the smd driver is not capable of being used on big endian CPUs. Annotate the little endian data members and update the code to do the proper byte swapping. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd_rpm: Handle big endian CPUsStephen Boyd1-24/+26
The smd rpm structures are always in little endian, but this driver is not capable of being used on big endian CPUs. Annotate the little endian data members and update the code to do the proper byte swapping. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Remove use of VLAISStephen Boyd1-13/+19
Usage of VLAIS prevents clang from compiling this file, and it also opens us to the possibility of allocating a large structure on the stack to the point that we blow past the limit of the kernel stack. Remove the VLAIS and allocate a structure on the heap with kmalloc so that we're safer and more clang friendly. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Use __iowrite32_copy() instead of open-coding itStephen Boyd1-9/+4
We already have a function to do this and it silences some sparse warnings along the way. Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Represent channel layout in structuresStephen Boyd1-28/+33
The rx and tx channel info are laid out in memory next to each other, and there are two types of channel info structures, byte based and word based. We have 4 pointers to these info structures, when we really only need two to point to the different types of structures. Encapsulate the byte based and word based tx/rx structures in a "channel pair" structure that describes the layout of memory and reduces the number of pointers in the smd channel structure by two. Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smem: Handle big endian CPUsStephen Boyd1-91/+138
The contents of smem are always in little endian, but the smem driver is not capable of being used on big endian CPUs. Annotate the little endian data members and update the code to do the proper byte swapping. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: Make qcom_smem_get() return a pointerStephen Boyd3-56/+48
Passing a void ** almost always requires a cast at the call site. Instead of littering the code with casts every time this function is called, have qcom_smem_get() return a void pointer to the location of the smem item. This frees the caller from having to cast the pointer. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: Reorder SMEM/SMD configsStephen Boyd1-8/+8
When I make nconfig, having the SMEM option after the SMD option causes the configurator to get confused when I'm enabling and disabling these options. Let's move SMEM before SMD so there's a clear indented dependency chain. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smem: Avoid NULL pointer exception on removeStephen Boyd1-1/+1
Don't set a pointer to NULL and then dereference it in the next line. Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14soc: qcom: smd: Implement id_table driver matchingBjorn Andersson2-7/+29
Implement a id_table based driver maching mechanism for drivers that binds to fixed channels and doesn't need any additional configuration, e.g. IPCRTR and DIAG. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-09hwmon: Support thermal zones registration for SCP temperature sensorsPunit Agrawal1-1/+103
Add support to create thermal zones based on the temperature sensors provided by the SCP. The thermal zones can be defined using the thermal DT bindings and should refer to the SCP sensor id to select the sensor. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Cc: Eduardo Valentin <edubezval@gmail.com>
2015-10-09hwmon: Support sensors exported via ARM SCP interfacePunit Agrawal4-0/+228
Create a driver to add support for SoC sensors exported by the System Control Processor (SCP) via the System Control and Power Interface (SCPI). The supported sensor types is one of voltage, temperature, current, and power. The sensor labels and values provided by the SCP are exported via the hwmon sysfs interface. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Cc: Sudeep Holla <sudeep.holla@arm.com>
2015-10-09firmware: arm_scpi: Extend to support sensorsPunit Agrawal2-0/+77
ARM System Control Processor (SCP) provides an API to query and use the sensors available in the system. Extend the SCPI driver to support sensor messages. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com>
2015-10-09Documentation: add DT bindings for ARM SCPI sensorsPunit Agrawal1-0/+38
The System Control Processor (SCP) provides access to SoC sensors via the System Control and Power Interface (SCPI) Message Protocol. Add bindings to allow probing of these sensors. Also support referencing of the sensors for setting up thermal zones via the thermal DT bindings. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com>
2015-10-06misc: atmel_tclib: get and use slow clockBoris Brezillon4-8/+33
Commit dca1a4b5ff6e ("clk: at91: keep slow clk enabled to prevent system hang") added a workaround for the slow clock as it is not properly handled by its users. Get and use the slow clock as it is necessary for the timer counters. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Thierry Reding <thierry.reding@gmail.com>
2015-10-06clocksource: tcb_clksrc: fix setup_clkevents error pathBoris Brezillon1-1/+1
t2_clk is already disabled before request_irq(), it must not be disabled again. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-10-06clocksource: atmel-st: get and use slow clockAlexandre Belloni1-9/+22
The current slow clock rate is hardcoded. Properly get the slow clock and use its rate. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-10-06soc: rockchip: power-domain: Add power domain driverCaesar Wang5-0/+510
This driver is found on RK3288 SoCs. In order to meet high performance and low power requirements, a power management unit is designed or saving power when RK3288 in low power mode. The RK3288 PMU is dedicated for managing the power of the whole chip. PMU can work in the Low Power Mode by setting bit[0] of PMU_PWRMODE_CON register. After setting the register, PMU would enter the Low Power mode. In the low power mode, pmu will auto power on/off the specified power domain, send idle req to specified power domain, shut down/up pll and so on. All of above are configurable by setting corresponding registers. Signed-off-by: Caesar Wang <wxt@rock-chips.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> [replace dsb() with dsb(sy) for arm64 buildability; sy is the default, so no functional change; adapt to per-user clocks in genpd] Signed-off-by: Heiko Stuebner <heiko@sntech.de>