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path: root/drivers/thermal/qcom/tsens-common.c
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* thermal: tsens: qcom: do not create duplicate regmap debugfs entriesSrinivas Kandagatla2019-01-021-2/+10
| | | | | | | | | | | | | | | | Regmap would use device name to create debugfs entries. If the device has multiple regmaps it is recommended to use name field in regmap_config. Fix this by providing name to the regmap configs correctly. Without this patch we would see below error on DB820c. qcom-tsens 4a9000.thermal-sensor: Failed to create 4a9000.thermal-sensor debugfs directory Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Amit Kucheria <amit.kucheria@linaro.org> Tested-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Check if the IP is correctly enabled by firmwareAmit Kucheria2018-10-221-0/+17
| | | | | | | | | | The SROT registers are initialised by the secure firmware at boot. We don't have write access to the registers. Check if the block is enabled before continuing. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Add the SROT address mapAmit Kucheria2018-10-221-2/+12
| | | | | | | | | | | On platforms whose device trees specify two address spaces for TSENS, the second one points to the SROT registers. Initialise the SROT map on those platforms. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Rename map field in order to add a second address mapAmit Kucheria2018-10-221-9/+8
| | | | | | | | | | | | | | | | | | | | The TSENS driver currently only uses a limited set of registers from the TM address space. So it was ok to map just that set of registers and call it "map". We'd now like to map a second set: SROT registers to introduce new functionality. Rename the "map" field to a more appropriate "tm_map". The 8960 doesn't have a clear split between TM and SROT registers. To avoid complicating the data structure, it will switchover to using tm_map for its maps. There is no functional change with this patch. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Add SPDX license identifiersAmit Kucheria2018-10-221-10/+1
| | | | | | | | | | The TSENS drivers use a GPL-2.0 license. Replace with equivalent SPDX tags and delete the full license text. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Prepare 8916 and 8974 tsens to use SROT and TM address spaceAmit Kucheria2018-10-221-2/+3
| | | | | | | | | | | | | | | We've already converted over the devicetree of platforms using v2 version of the TSENS IP to use two address spaces. Now prepare to convert over the 8916 and 8974 platforms to use separate SROT and TM address spaces. This patch will work with device trees with one or two address spaces because we set the tm_offset in commit 5b1283984fa3 ("thermal: tsens: Add support to split up register address space into two"). Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: switch from of_iomap() to devm_ioremap_resource()Amit Kucheria2018-07-271-6/+7
| | | | | | | | | | | devm_ioremap_resources() automatically requests resources (so that the I/O region shows up in /proc/iomem) and devm_ wrappers do better error handling and unmapping of the I/O region when needed. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Rename variableAmit Kucheria2018-07-271-3/+3
| | | | | | | | | | We're actually reading the temperature from the status register. Fix the variable name to reflect that. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: tsens: Add support to split up register address space into twoAmit Kucheria2018-07-271-0/+12
| | | | | | | | | | | | | | | | | | There are two banks of registers for v2 TSENS IPs: SROT and TM. On older SoCs these were contiguous, leading to DTs mapping them as one register address space of size 0x2000. In newer SoCs, these two banks are not contiguous anymore. Add logic to init_common() to differentiate between old and new DTs and adjust associated offsets for the TM register bank so that the old DTs will continue to function correctly. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* thermal: qcom: tsens: Fix return value check in init_common()Wei Yongjun2016-09-271-3/+3
| | | | | | | | | | | | | In case of error, the function of_iomap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. And the function devm_regmap_init_mmio() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
* thermal: qcom: tsens: Add a skeletal TSENS driversRajendra Nayak2016-09-271-0/+141
TSENS is Qualcomms' thermal temperature sensor device. It supports reading temperatures from multiple thermal sensors present on various QCOM SoCs. Calibration data is generally read from a non-volatile memory (eeprom) device. Add a skeleton driver with all the necessary abstractions so a variety of qcom device families which support TSENS can add driver extensions. Also add the required device tree bindings which can be used to describe the TSENS device in DT. Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Reviewed-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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