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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
This commit is contained in:
Christian Marangi 2022-07-07 12:20:38 +02:00 committed by Bjorn Andersson
parent 0e01d176d5
commit cdab30b445
1 changed files with 23 additions and 5 deletions
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28
drivers/hwspinlock/qcom_hwspinlock.c
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@ -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))