kernel/drivers/hwspinlock/qcom_hwspinlock.c, branch linux-6.9.y

hwspinlock: qcom: Remove IPQ6018 SOC specific compatible

2023-12-07T22:42:01Z

IPQ6018 has 32 tcsr_mutex hwlock registers with stride 0x1000. The compatible string qcom,ipq6018-tcsr-mutex is mapped to of_msm8226_tcsr_mutex which has 32 locks configured with stride of 0x80 and doesn't match the HW present in IPQ6018. Remove IPQ6018 specific compatible string so that it fallsback to of_tcsr_mutex data which maps to the correct configuration for IPQ6018. Fixes: 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs") Signed-off-by: Vignesh Viswanathan Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20230905095535.1263113-3-quic_viswanat@quicinc.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: add missing regmap config for SFPB MMIO implementation

2023-07-17T18:49:18Z

Commit 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs") introduced and made regmap_config mandatory in the of_data struct but didn't add the regmap_config for sfpb based devices. SFPB based devices can both use the legacy syscon way to probe or the new MMIO way and currently device that use the MMIO way are broken as they lack the definition of the now required regmap_config and always return -EINVAL (and indirectly makes fail probing everything that depends on it, smem, nandc with smem-parser...) Fix this by correctly adding the missing regmap_config and restore function of hwspinlock on SFPB based devices with MMIO implementation. Cc: stable@vger.kernel.org Fixes: 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs") Signed-off-by: Christian Marangi Link: https://lore.kernel.org/r/20230716022804.21239-1-ansuelsmth@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: add a check of devm_regmap_field_alloc in qcom_hwspinlock_probe

2023-07-15T19:57:29Z

devm_regmap_field_alloc may fails, priv field might be error pointer and cause illegal address access later. Signed-off-by: Kang Chen Link: https://lore.kernel.org/r/20230227004116.1273988-1-void0red@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: add support for MMIO on older SoCs

2022-09-13T22:01:18Z

Older Qualcomm SoCs have TCSR mutex registers with 0x80 stride, instead of 0x1000. Add dedicated compatibles and regmap for such case. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220909092035.223915-5-krzysztof.kozlowski@linaro.org

hwspinlock: qcom: correct MMIO max register for newer SoCs

2022-09-13T22:01:18Z

Newer ARMv8 Qualcomm SoCs using 0x1000 register stride have maximum register 0x20000 (32 mutexes * 0x1000). Fixes: 7a1e6fb1c606 ("hwspinlock: qcom: Allow mmio usage in addition to syscon") Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220909092035.223915-4-krzysztof.kozlowski@linaro.org

hwspinlock: qcom: Add support for mmio usage to sfpb-mutex

2022-07-17T02:47:44Z

Allow sfpb-mutex to use mmio in addition to syscon. Signed-off-by: Christian Marangi Reviewed-by: Bjorn Andersson Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220707102040.1859-1-ansuelsmth@gmail.com

hwspinlock: qcom: Allow mmio usage in addition to syscon

2020-07-14T05:29:28Z

In modern Qualcomm platforms the mutex region of the TCSR is forked off into its own block, all with a offset of 0 and stride of 4096, and in some of these platforms no other registers in this region is accessed from Linux. So add support for directly memory mapping this register space, to avoid the need to represent this block using a syscon. Reviewed-by: Baolin Wang Reviewed-by: Vinod Koul Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20200622075956.171058-4-bjorn.andersson@linaro.org Signed-off-by: Bjorn Andersson

hwspinlock: qcom: Use devm_hwspin_lock_register() to register hwlock controller

2020-01-22T00:10:07Z

Use devm_hwspin_lock_register() to register the hwlock controller instead of unregistering the hwlock controller explicitly when removing the device. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/d69ad8611a68b0cac3c927d19901f3c113c5435c.1578452735.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: Remove redundant PM runtime functions

2020-01-22T00:09:10Z

Since the hwspinlock core has changed the PM runtime to be optional, and the Qualcomm hardware spinlock has no pm runtime requirement, thus remove these redundant PM runtime functions. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/e0bb751feb7af709f92e52a07d0e8ebcf1ee44ff.1578452735.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: Switch to SPDX license identifier

2018-05-24T19:04:46Z

Use the appropriate SPDX license identifier in the Qualcomm Hwspinlock driver source file and drop the previous boilerplate license text. Signed-off-by: Suman Anna Signed-off-by: Bjorn Andersson