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path: root/drivers/interconnect/qcom/sdm660.c
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* interconnect: qcom: Make qnoc_remove return voidUwe Kleine-König2023-11-221-1/+1
| | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Several interconnect/qcom drivers use qnoc_remove() as remove callback. Make this function return void (instead of unconditionally zero) and adapt the drivers using this function accordingly. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20231031222851.3126434-12-u.kleine-koenig@pengutronix.de Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: sdm660: Set AB/IB coefficientsKonrad Dybcio2023-10-091-0/+4
| | | | | | | | | Some buses and nodes need additional manual adjustments atop the usual calculations. Fill in the missing coefficients. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-8-c04b60caa467@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: Explicitly include correct DT includesRob Herring2023-07-161-2/+1
| | | | | | | | | | | | | | | The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174638.4058268-1-robh@kernel.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: icc-rpm: Control bus rpmcc from iccKonrad Dybcio2023-07-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sole purpose of bus clocks that were previously registered with rpmcc was to convey the aggregated bandwidth to RPM. There's no good reason to keep them outside the interconnect framework, as it only adds to the plentiful complexity. Add the required code to handle these clocks from within SMD RPM ICC. RPM-owned bus clocks are no longer considered a thing, but sadly we have to allow for the existence of HLOS-owned bus clocks, as some (mostly older) SoCs (ab)use these for bus scaling (e.g. MSM8998 and &mmcc AHB_CLK_SRC). This in turn is trivially solved with a single *clk, which is filled and used iff qp.bus_clk_desc is absent and we have a "bus" clock-names entry in the DT node. This change should(tm) be fully compatible with all sorts of old Device Trees as far as the interconnect functionality goes (modulo abusing bus clock handles or wrongly using the qcom,icc.h binding, but that's a mistake in and of itself). Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-17-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
* interconnect: qcom: sdm660: Hook up RPM bus clk definitionsKonrad Dybcio2023-07-151-0/+5
| | | | | | | | | | | Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-11-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
* interconnect: qcom: Fold smd-rpm.h into icc-rpm.hKonrad Dybcio2023-07-151-1/+0
| | | | | | | | | | | smd-rpm.h is not very useful as-is and both files are always included anyway.. Combine them. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-8-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
* interconnect: qcom: Add missing headers in icc-rpm.hKonrad Dybcio2023-07-151-1/+0
| | | | | | | | | | Currently the header does not provide all the required dependencies. Fix it. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-7-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
* interconnect: qcom: icc-rpm: Enforce 2 or 0 bus clocksKonrad Dybcio2023-05-211-0/+1
| | | | | | | | | | | | | | | | | | | | For SMD RPM bus scaling to work, we need a pair of sleep-wake clocks. The variable number of them we previously supported was only a hack to keep the clocks required for QoS register access, but now that these are separated, we can leave bus_clks to the actual bus clocks. In cases where there is no actual bus scaling (such as A0NoC on MSM8996 and GNoC on SDM660 where the HLOS is only supposed to program the QoS registers and the bus is either static or controlled remotely), allow for no clock scaling with a boolean property. Remove all the code related to allowing an arbitrary number of bus_clks, replace the number by BUS_CLK_MAX (= 2) and guard the bus clock paths to ensure they are not taken on non-scaling buses. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230228-topic-qos-v8-6-ee696a2c15a9@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: rpm: Handle interface clocksKonrad Dybcio2023-05-211-10/+6
| | | | | | | | | | | | | | | | | | | | Some (but not all) providers (or their specific nodes) require specific clocks to be turned on before they can be accessed. Failure to ensure that results in a seemingly random system crash (which would usually happen at boot with the interconnect driver built-in), resulting in the platform not booting up properly. Limit the number of bus_clocks to 2 (which is the maximum that SMD RPM interconnect supports anyway) and handle non-scaling clocks separately. Update MSM8996 and SDM660 drivers to make sure they do not regress with this change. This unfortunately has to be done in one patch to prevent either compile errors or broken bisect. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230518195801.2556998-1-konrad.dybcio@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: rpm: Rename icc desc clocks to bus_blocksKonrad Dybcio2023-05-181-4/+4
| | | | | | | | | | Rename the "clocks" (and _names) fields of qcom_icc_desc to "bus_clocks" in preparation for introducing handling of clocks that need to be enabled but not voted on with aggregate frequency. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230228-topic-qos-v8-1-ee696a2c15a9@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: constify icc_node pointersKrzysztof Kozlowski2022-04-231-6/+6
| | | | | | | | | | Pointers to struct qcom_icc_node (and similar structures) are not modified, so they can be made const for safety. The contents of struct qcom_icc_node must stay non-const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220412102623.227607-2-krzysztof.kozlowski@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: constify qcom_icc_descKrzysztof Kozlowski2022-04-231-6/+6
| | | | | | | | struct qcom_icc_desc is not modified so it can be made const for safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220412102623.227607-1-krzysztof.kozlowski@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: icc-rpm: Define ICC device typeShawn Guo2021-12-151-1/+6
| | | | | | | | | | | | The driver currently uses .is_bimc_node to distinguish device type BIMC from NOC. Define type for bus/noc devices like what downstream[1] does to make support for more types easier. [1] https://source.codeaurora.org/quic/la/kernel/msm-4.19/tree/drivers/soc/qcom/msm_bus/msm_bus_core.h?h=kernel.lnx.4.19.r22-rel#n46 Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20211215002324.1727-2-shawn.guo@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: sdm660: merge common code into icc-rpmDmitry Baryshkov2021-10-041-467/+18
| | | | | | | | | | | | Other RPM interconnect drivers might also use QoS support. Move AP-owned nodes support from SDM660 driver to common icc-rpm.c. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Tested-by: Marijn Suijten <marijn.suijten@somainline.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20210903232421.1384199-5-dmitry.baryshkov@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: sdm660: drop default/unused valuesDmitry Baryshkov2021-10-041-343/+64
| | | | | | | | | | | Simplify qnode setup by removing unused/default values. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Tested-by: Marijn Suijten <marijn.suijten@somainline.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20210903232421.1384199-4-dmitry.baryshkov@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: sdm660: expand DEFINE_QNODE macrosDmitry Baryshkov2021-10-041-116/+1626
| | | | | | | | | | | | | | Expand DEFINE_QNODE macros, which with an addition of QoS become an ugly beast with tons of different arguments. While we are at it also move links lists to separate arrays. Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Tested-by: Marijn Suijten <marijn.suijten@somainline.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20210903232421.1384199-3-dmitry.baryshkov@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: sdm660: Add missing a2noc qos clocksShawn Guo2021-09-131-0/+14
| | | | | | | | | | | | | | | It adds the missing a2noc clocks required for QoS registers programming per downstream kernel[1]. Otherwise, qcom_icc_noc_set_qos_priority() call on mas_ufs or mas_usb_hs node will simply result in a hardware hang on SDM660 SoC. [1] https://source.codeaurora.org/quic/la/kernel/msm-4.4/tree/arch/arm/boot/dts/qcom/sdm660-bus.dtsi?h=LA.UM.8.2.r1-04800-sdm660.0#n43 Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Link: https://lore.kernel.org/r/20210824043435.23190-3-shawn.guo@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: sdm660: Correct NOC_QOS_PRIORITY shift and maskShawn Guo2021-09-131-5/+4
| | | | | | | | | | | | | | | | The NOC_QOS_PRIORITY shift and mask do not match what vendor kernel defines [1]. Correct them per vendor kernel. As the result of NOC_QOS_PRIORITY_P0_SHIFT being 0, the definition can be dropped and regmap_update_bits() call on P0 can be simplified a bit. [1] https://source.codeaurora.org/quic/la/kernel/msm-4.4/tree/drivers/soc/qcom/msm_bus/msm_bus_noc_adhoc.c?h=LA.UM.8.2.r1-04800-sdm660.0#n37 Fixes: f80a1d414328 ("interconnect: qcom: Add SDM660 interconnect provider driver") Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Link: https://lore.kernel.org/r/20210902054915.28689-1-shawn.guo@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: sdm660: Fix id of slv_cnoc_mnoc_cfgShawn Guo2021-09-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The id of slv_cnoc_mnoc_cfg node is mistakenly coded as id of slv_blsp_1. It causes the following warning on slv_blsp_1 node adding. Correct the id of slv_cnoc_mnoc_cfg node. [ 1.948180] ------------[ cut here ]------------ [ 1.954122] WARNING: CPU: 2 PID: 7 at drivers/interconnect/core.c:962 icc_node_add+0xe4/0xf8 [ 1.958994] Modules linked in: [ 1.967399] CPU: 2 PID: 7 Comm: kworker/u16:0 Not tainted 5.14.0-rc6-next-20210818 #21 [ 1.970275] Hardware name: Xiaomi Redmi Note 7 (DT) [ 1.978169] Workqueue: events_unbound deferred_probe_work_func [ 1.982945] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1.988849] pc : icc_node_add+0xe4/0xf8 [ 1.995699] lr : qnoc_probe+0x350/0x438 [ 1.999519] sp : ffff80001008bb10 [ 2.003337] x29: ffff80001008bb10 x28: 000000000000001a x27: ffffb83ddc61ee28 [ 2.006818] x26: ffff2fe341d44080 x25: ffff2fe340f3aa80 x24: ffffb83ddc98f0e8 [ 2.013938] x23: 0000000000000024 x22: ffff2fe3408b7400 x21: 0000000000000000 [ 2.021054] x20: ffff2fe3408b7410 x19: ffff2fe341d44080 x18: 0000000000000010 [ 2.028173] x17: ffff2fe3bdd0aac0 x16: 0000000000000281 x15: ffff2fe3400f5528 [ 2.035290] x14: 000000000000013f x13: ffff2fe3400f5528 x12: 00000000ffffffea [ 2.042410] x11: ffffb83ddc9109d0 x10: ffffb83ddc8f8990 x9 : ffffb83ddc8f89e8 [ 2.049527] x8 : 0000000000017fe8 x7 : c0000000ffffefff x6 : 0000000000000001 [ 2.056645] x5 : 0000000000057fa8 x4 : 0000000000000000 x3 : ffffb83ddc9903b0 [ 2.063764] x2 : 1a1f6fde34d45500 x1 : ffff2fe340f3a880 x0 : ffff2fe340f3a880 [ 2.070882] Call trace: [ 2.077989] icc_node_add+0xe4/0xf8 [ 2.080247] qnoc_probe+0x350/0x438 [ 2.083718] platform_probe+0x68/0xd8 [ 2.087191] really_probe+0xb8/0x300 [ 2.091011] __driver_probe_device+0x78/0xe0 [ 2.094659] driver_probe_device+0x80/0x110 [ 2.098911] __device_attach_driver+0x90/0xe0 [ 2.102818] bus_for_each_drv+0x78/0xc8 [ 2.107331] __device_attach+0xf0/0x150 [ 2.110977] device_initial_probe+0x14/0x20 [ 2.114796] bus_probe_device+0x9c/0xa8 [ 2.118963] deferred_probe_work_func+0x88/0xc0 [ 2.122784] process_one_work+0x1a4/0x338 [ 2.127296] worker_thread+0x1f8/0x420 [ 2.131464] kthread+0x150/0x160 [ 2.135107] ret_from_fork+0x10/0x20 [ 2.138495] ---[ end trace 5eea8768cb620e87 ]--- Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Fixes: f80a1d414328 ("interconnect: qcom: Add SDM660 interconnect provider driver") Link: https://lore.kernel.org/r/20210823014003.31391-1-shawn.guo@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
* interconnect: qcom: sdm660: Fix kerneldoc warningGeorgi Djakov2021-04-021-0/+1
| | | | | | | | | | Fix the following warning: sdm660.c:191:warning: Function parameter or member 'regmap' not described in 'qcom_icc_provider' Link: https://lore.kernel.org/r/20210401094714.29075-1-georgi.djakov@linaro.org Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
* interconnect: qcom: Add SDM660 interconnect provider driverAngeloGioacchino Del Regno2021-03-081-0/+922
Introduce a driver for the Qualcomm interconnect busses found in the SDM630/SDM636/SDM660 SoCs. The topology consists of several NoCs that are controlled by a remote processor that collects the aggregated bandwidth for each master-slave pairs. On a note, these chips are managing the "bus QoS" in a "hybrid" fashion: some of the paths in the topology are managed through (and by, of course) the RPM uC, while some others are "AP Owned", meaning that the AP shall do direct writes to the appropriate QoS registers for the specific paths and ports, instead of sending an indication to the RPM and leaving the job to that one. Signed-off-by: AngeloGioacchino Del Regno <kholk11@gmail.com> Link: https://lore.kernel.org/r/20201017133718.31327-3-kholk11@gmail.com Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
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