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Diffstat (limited to 'target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch')
-rw-r--r--target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch234
1 files changed, 0 insertions, 234 deletions
diff --git a/target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch b/target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch
deleted file mode 100644
index 581b199d7f..0000000000
--- a/target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch
+++ /dev/null
@@ -1,234 +0,0 @@
-From 19a0f61224d2d91860fa8291ab63cb104ee86bdd Mon Sep 17 00:00:00 2001
-From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
-Date: Tue, 24 Mar 2015 10:11:05 -0700
-Subject: [PATCH] hwspinlock: qcom: Add support for Qualcomm HW Mutex block
-
-Add driver for Qualcomm Hardware Mutex block found in many Qualcomm
-SoCs.
-
-Based on initial effort by Kumar Gala <galak@codeaurora.org>
-
-Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
-Reviewed-by: Andy Gross <agross@codeaurora.org>
-Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
-Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
----
- drivers/hwspinlock/Kconfig | 12 +++
- drivers/hwspinlock/Makefile | 1 +
- drivers/hwspinlock/qcom_hwspinlock.c | 181 +++++++++++++++++++++++++++++++++++
- 3 files changed, 194 insertions(+)
- create mode 100644 drivers/hwspinlock/qcom_hwspinlock.c
-
---- a/drivers/hwspinlock/Kconfig
-+++ b/drivers/hwspinlock/Kconfig
-@@ -18,6 +18,18 @@ config HWSPINLOCK_OMAP
-
- If unsure, say N.
-
-+config HWSPINLOCK_QCOM
-+ tristate "Qualcomm Hardware Spinlock device"
-+ depends on ARCH_QCOM
-+ select HWSPINLOCK
-+ select MFD_SYSCON
-+ help
-+ Say y here to support the Qualcomm Hardware Mutex functionality, which
-+ provides a synchronisation mechanism for the various processors on
-+ the SoC.
-+
-+ If unsure, say N.
-+
- config HSEM_U8500
- tristate "STE Hardware Semaphore functionality"
- depends on ARCH_U8500
---- a/drivers/hwspinlock/Makefile
-+++ b/drivers/hwspinlock/Makefile
-@@ -4,4 +4,5 @@
-
- obj-$(CONFIG_HWSPINLOCK) += hwspinlock_core.o
- obj-$(CONFIG_HWSPINLOCK_OMAP) += omap_hwspinlock.o
-+obj-$(CONFIG_HWSPINLOCK_QCOM) += qcom_hwspinlock.o
- obj-$(CONFIG_HSEM_U8500) += u8500_hsem.o
---- /dev/null
-+++ b/drivers/hwspinlock/qcom_hwspinlock.c
-@@ -0,0 +1,181 @@
-+/*
-+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
-+ * Copyright (c) 2015, Sony Mobile Communications AB
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#include <linux/hwspinlock.h>
-+#include <linux/io.h>
-+#include <linux/kernel.h>
-+#include <linux/mfd/syscon.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/pm_runtime.h>
-+#include <linux/regmap.h>
-+
-+#include "hwspinlock_internal.h"
-+
-+#define QCOM_MUTEX_APPS_PROC_ID 1
-+#define QCOM_MUTEX_NUM_LOCKS 32
-+
-+static int qcom_hwspinlock_trylock(struct hwspinlock *lock)
-+{
-+ struct regmap_field *field = lock->priv;
-+ u32 lock_owner;
-+ int ret;
-+
-+ ret = regmap_field_write(field, QCOM_MUTEX_APPS_PROC_ID);
-+ if (ret)
-+ return ret;
-+
-+ ret = regmap_field_read(field, &lock_owner);
-+ if (ret)
-+ return ret;
-+
-+ return lock_owner == QCOM_MUTEX_APPS_PROC_ID;
-+}
-+
-+static void qcom_hwspinlock_unlock(struct hwspinlock *lock)
-+{
-+ struct regmap_field *field = lock->priv;
-+ u32 lock_owner;
-+ int ret;
-+
-+ ret = regmap_field_read(field, &lock_owner);
-+ if (ret) {
-+ pr_err("%s: unable to query spinlock owner\n", __func__);
-+ return;
-+ }
-+
-+ if (lock_owner != QCOM_MUTEX_APPS_PROC_ID) {
-+ pr_err("%s: spinlock not owned by us (actual owner is %d)\n",
-+ __func__, lock_owner);
-+ }
-+
-+ ret = regmap_field_write(field, 0);
-+ if (ret)
-+ pr_err("%s: failed to unlock spinlock\n", __func__);
-+}
-+
-+static const struct hwspinlock_ops qcom_hwspinlock_ops = {
-+ .trylock = qcom_hwspinlock_trylock,
-+ .unlock = qcom_hwspinlock_unlock,
-+};
-+
-+static const struct of_device_id qcom_hwspinlock_of_match[] = {
-+ { .compatible = "qcom,sfpb-mutex" },
-+ { .compatible = "qcom,tcsr-mutex" },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(of, qcom_hwspinlock_of_match);
-+
-+static int qcom_hwspinlock_probe(struct platform_device *pdev)
-+{
-+ struct hwspinlock_device *bank;
-+ struct device_node *syscon;
-+ struct reg_field field;
-+ struct regmap *regmap;
-+ size_t array_size;
-+ u32 stride;
-+ u32 base;
-+ int ret;
-+ int i;
-+
-+ syscon = of_parse_phandle(pdev->dev.of_node, "syscon", 0);
-+ if (!syscon) {
-+ dev_err(&pdev->dev, "no syscon property\n");
-+ return -ENODEV;
-+ }
-+
-+ regmap = syscon_node_to_regmap(syscon);
-+ if (IS_ERR(regmap))
-+ return PTR_ERR(regmap);
-+
-+ ret = of_property_read_u32_index(pdev->dev.of_node, "syscon", 1, &base);
-+ if (ret < 0) {
-+ dev_err(&pdev->dev, "no offset in syscon\n");
-+ return -EINVAL;
-+ }
-+
-+ ret = of_property_read_u32_index(pdev->dev.of_node, "syscon", 2, &stride);
-+ if (ret < 0) {
-+ dev_err(&pdev->dev, "no stride syscon\n");
-+ return -EINVAL;
-+ }
-+
-+ array_size = QCOM_MUTEX_NUM_LOCKS * sizeof(struct hwspinlock);
-+ bank = devm_kzalloc(&pdev->dev, sizeof(*bank) + array_size, GFP_KERNEL);
-+ if (!bank)
-+ return -ENOMEM;
-+
-+ platform_set_drvdata(pdev, bank);
-+
-+ for (i = 0; i < QCOM_MUTEX_NUM_LOCKS; i++) {
-+ field.reg = base + i * stride;
-+ field.lsb = 0;
-+ field.msb = 32;
-+
-+ bank->lock[i].priv = devm_regmap_field_alloc(&pdev->dev,
-+ regmap, field);
-+ }
-+
-+ pm_runtime_enable(&pdev->dev);
-+
-+ ret = hwspin_lock_register(bank, &pdev->dev, &qcom_hwspinlock_ops,
-+ 0, QCOM_MUTEX_NUM_LOCKS);
-+ if (ret)
-+ pm_runtime_disable(&pdev->dev);
-+
-+ return ret;
-+}
-+
-+static int qcom_hwspinlock_remove(struct platform_device *pdev)
-+{
-+ struct hwspinlock_device *bank = platform_get_drvdata(pdev);
-+ int ret;
-+
-+ ret = hwspin_lock_unregister(bank);
-+ if (ret) {
-+ dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);
-+ return ret;
-+ }
-+
-+ pm_runtime_disable(&pdev->dev);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver qcom_hwspinlock_driver = {
-+ .probe = qcom_hwspinlock_probe,
-+ .remove = qcom_hwspinlock_remove,
-+ .driver = {
-+ .name = "qcom_hwspinlock",
-+ .of_match_table = qcom_hwspinlock_of_match,
-+ },
-+};
-+
-+static int __init qcom_hwspinlock_init(void)
-+{
-+ return platform_driver_register(&qcom_hwspinlock_driver);
-+}
-+/* board init code might need to reserve hwspinlocks for predefined purposes */
-+postcore_initcall(qcom_hwspinlock_init);
-+
-+static void __exit qcom_hwspinlock_exit(void)
-+{
-+ platform_driver_unregister(&qcom_hwspinlock_driver);
-+}
-+module_exit(qcom_hwspinlock_exit);
-+
-+MODULE_LICENSE("GPL v2");
-+MODULE_DESCRIPTION("Hardware spinlock driver for Qualcomm SoCs");
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 15:17:51 +0000