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| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-09-09 11:20:24 +0200 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2022-09-13 17:01:18 -0500 |
| commit | 5d4753f741d824e04e7ba46f46ec016be120f383 (patch) | |
| tree | 7f03c5efbf96ecd56bfaaa8a41027f68de618381 /drivers/hwspinlock | |
| parent | 90cb380f9ceb811059340d06ff5fd0c0e93ecbe1 (diff) | |
| download | linux-5d4753f741d824e04e7ba46f46ec016be120f383.tar.gz linux-5d4753f741d824e04e7ba46f46ec016be120f383.tar.bz2 linux-5d4753f741d824e04e7ba46f46ec016be120f383.zip | |
hwspinlock: qcom: add support for MMIO on older SoCs
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 <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220909092035.223915-5-krzysztof.kozlowski@linaro.org
Diffstat (limited to 'drivers/hwspinlock')
| -rw-r--r-- | drivers/hwspinlock/qcom_hwspinlock.c | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/drivers/hwspinlock/qcom_hwspinlock.c b/drivers/hwspinlock/qcom_hwspinlock.c index 9734e149d981..9cf186362ae2 100644 --- a/drivers/hwspinlock/qcom_hwspinlock.c +++ b/drivers/hwspinlock/qcom_hwspinlock.c @@ -22,6 +22,7 @@ struct qcom_hwspinlock_of_data { u32 offset; u32 stride; + const struct regmap_config *regmap_config; }; static int qcom_hwspinlock_trylock(struct hwspinlock *lock) @@ -73,15 +74,42 @@ static const struct qcom_hwspinlock_of_data of_sfpb_mutex = { .stride = 0x4, }; -/* All modern platform has offset 0 and stride of 4k */ +static const struct regmap_config tcsr_msm8226_mutex_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x1000, + .fast_io = true, +}; + +static const struct qcom_hwspinlock_of_data of_msm8226_tcsr_mutex = { + .offset = 0, + .stride = 0x80, + .regmap_config = &tcsr_msm8226_mutex_config, +}; + +static const struct regmap_config tcsr_mutex_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x20000, + .fast_io = true, +}; + static const struct qcom_hwspinlock_of_data of_tcsr_mutex = { .offset = 0, .stride = 0x1000, + .regmap_config = &tcsr_mutex_config, }; static const struct of_device_id qcom_hwspinlock_of_match[] = { { .compatible = "qcom,sfpb-mutex", .data = &of_sfpb_mutex }, { .compatible = "qcom,tcsr-mutex", .data = &of_tcsr_mutex }, + { .compatible = "qcom,apq8084-tcsr-mutex", .data = &of_msm8226_tcsr_mutex }, + { .compatible = "qcom,ipq6018-tcsr-mutex", .data = &of_msm8226_tcsr_mutex }, + { .compatible = "qcom,msm8226-tcsr-mutex", .data = &of_msm8226_tcsr_mutex }, + { .compatible = "qcom,msm8974-tcsr-mutex", .data = &of_msm8226_tcsr_mutex }, + { .compatible = "qcom,msm8994-tcsr-mutex", .data = &of_msm8226_tcsr_mutex }, { } }; MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match); @@ -117,14 +145,6 @@ static struct regmap *qcom_hwspinlock_probe_syscon(struct platform_device *pdev, return regmap; } -static const struct regmap_config tcsr_mutex_config = { - .reg_bits = 32, - .reg_stride = 4, - .val_bits = 32, - .max_register = 0x20000, - .fast_io = true, -}; - static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev, u32 *offset, u32 *stride) { @@ -133,6 +153,8 @@ static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev, void __iomem *base; data = of_device_get_match_data(dev); + if (!data->regmap_config) + return ERR_PTR(-EINVAL); *offset = data->offset; *stride = data->stride; @@ -141,7 +163,7 @@ static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev, if (IS_ERR(base)) return ERR_CAST(base); - return devm_regmap_init_mmio(dev, base, &tcsr_mutex_config); + return devm_regmap_init_mmio(dev, base, data->regmap_config); } static int qcom_hwspinlock_probe(struct platform_device *pdev) |