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| author | Christian Marangi <ansuelsmth@gmail.com> | 2022-07-07 12:20:38 +0200 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2022-07-16 21:47:44 -0500 |
| commit | cdab30b44518513003607ecfc8a22de3dbbb78ed (patch) | |
| tree | 429f25d2168bc6897d9304fb3d7e51046689e3e5 /drivers/hwspinlock | |
| parent | 0e01d176d5788f66dc64a7e61119edb56eb08339 (diff) | |
| download | lwn-cdab30b44518513003607ecfc8a22de3dbbb78ed.tar.gz lwn-cdab30b44518513003607ecfc8a22de3dbbb78ed.zip | |
hwspinlock: qcom: Add support for mmio usage to sfpb-mutex
Allow sfpb-mutex to use mmio in addition to syscon.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220707102040.1859-1-ansuelsmth@gmail.com
Diffstat (limited to 'drivers/hwspinlock')
| -rw-r--r-- | drivers/hwspinlock/qcom_hwspinlock.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/hwspinlock/qcom_hwspinlock.c b/drivers/hwspinlock/qcom_hwspinlock.c index 364710966665..80ea45b3a815 100644 --- a/drivers/hwspinlock/qcom_hwspinlock.c +++ b/drivers/hwspinlock/qcom_hwspinlock.c @@ -19,6 +19,11 @@ #define QCOM_MUTEX_APPS_PROC_ID 1 #define QCOM_MUTEX_NUM_LOCKS 32 +struct qcom_hwspinlock_of_data { + u32 offset; + u32 stride; +}; + static int qcom_hwspinlock_trylock(struct hwspinlock *lock) { struct regmap_field *field = lock->priv; @@ -63,9 +68,20 @@ static const struct hwspinlock_ops qcom_hwspinlock_ops = { .unlock = qcom_hwspinlock_unlock, }; +static const struct qcom_hwspinlock_of_data of_sfpb_mutex = { + .offset = 0x4, + .stride = 0x4, +}; + +/* All modern platform has offset 0 and stride of 4k */ +static const struct qcom_hwspinlock_of_data of_tcsr_mutex = { + .offset = 0, + .stride = 0x1000, +}; + static const struct of_device_id qcom_hwspinlock_of_match[] = { - { .compatible = "qcom,sfpb-mutex" }, - { .compatible = "qcom,tcsr-mutex" }, + { .compatible = "qcom,sfpb-mutex", .data = &of_sfpb_mutex }, + { .compatible = "qcom,tcsr-mutex", .data = &of_tcsr_mutex }, { } }; MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match); @@ -112,12 +128,14 @@ static const struct regmap_config tcsr_mutex_config = { static struct regmap *qcom_hwspinlock_probe_mmio(struct platform_device *pdev, u32 *offset, u32 *stride) { + const struct qcom_hwspinlock_of_data *data; struct device *dev = &pdev->dev; void __iomem *base; - /* All modern platform has offset 0 and stride of 4k */ - *offset = 0; - *stride = 0x1000; + data = of_device_get_match_data(dev); + + *offset = data->offset; + *stride = data->stride; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) |