Commit cdab30b4 authored by Christian Marangi's avatar Christian Marangi Committed by Bjorn Andersson
Browse files

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



Allow sfpb-mutex to use mmio in addition to syscon.

Signed-off-by: default avatarChristian Marangi <ansuelsmth@gmail.com>
Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220707102040.1859-1-ansuelsmth@gmail.com
parent 0e01d176

drivers/hwspinlock/qcom_hwspinlock.c

+23 −5
Original line number Diff line number Diff line
@@ -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))