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author | John Crispin <john@phrozen.org> | 2016-06-07 20:33:35 +0200 |
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committer | John Crispin <john@phrozen.org> | 2016-06-13 22:51:42 +0200 |
commit | 46cecfd6d727f398b568080655a77ea07308053b (patch) | |
tree | 09ec2303ba12556ce3276ae80534d5f9469f77c2 /target/linux/ipq806x/patches-3.18/031-hwspinlock-qcom-Add-support-for-Qualcomm-HW-Mutex-bl.patch | |
parent | 53147c2237231842b4d185f69c2bc0d79aff8b85 (diff) | |
download | master-31e0f0ae-46cecfd6d727f398b568080655a77ea07308053b.tar.gz master-31e0f0ae-46cecfd6d727f398b568080655a77ea07308053b.tar.bz2 master-31e0f0ae-46cecfd6d727f398b568080655a77ea07308053b.zip |
ipg806x: set v4.4 as default
Signed-off-by: John Crispin <john@phrozen.org>
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.patch | 234 |
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"); |