openwrt/target/linux/ipq806x/patches-5.15/105-v6.0-01-hwspinlock-qcom-Add-support-for-mmio-usage-to-sfpb-m.patch

From cdab30b44518513003607ecfc8a22de3dbbb78ed Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Thu, 7 Jul 2022 12:20:38 +0200
Subject: [PATCH 1/1] 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
---
 drivers/hwspinlock/qcom_hwspinlock.c | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

--- 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_
 	.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_m
 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))