aboutsummaryrefslogtreecommitdiffstats
path: root/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch')
-rw-r--r--meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch214
1 files changed, 0 insertions, 214 deletions
diff --git a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch
deleted file mode 100644
index a4f0744..0000000
--- a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0017-Revert-Revert-hwspinlock-rcar-Add-support-for-R-Car-.patch
+++ /dev/null
@@ -1,214 +0,0 @@
-From d10a3b0e5170ebe5350342c3e36902ff3624f2b1 Mon Sep 17 00:00:00 2001
-From: Hiroki Negishi <hiroki.negishi.bx@renesas.com>
-Date: Mon, 13 Nov 2017 11:58:51 +0900
-Subject: [PATCH 17/23] Revert "Revert "hwspinlock: rcar: Add support for R-Car
- Gen3 Hardware Spinlock""
-
-This reverts commit b960f2c58f30 ("Revert "hwspinlock: rcar: Add
-support for R-Car Gen3 Hardware Spinlock"")
-
-Signed-off-by: Hiroki Negishi <hiroki.negishi.bx@renesas.com>
----
- drivers/hwspinlock/Kconfig | 13 +++
- drivers/hwspinlock/Makefile | 1 +
- drivers/hwspinlock/rcar_hwspinlock.c | 156 +++++++++++++++++++++++++++++++++++
- 3 files changed, 170 insertions(+)
- create mode 100644 drivers/hwspinlock/rcar_hwspinlock.c
-
-diff --git a/drivers/hwspinlock/Kconfig b/drivers/hwspinlock/Kconfig
-index 73a4016..f0c0a35 100644
---- a/drivers/hwspinlock/Kconfig
-+++ b/drivers/hwspinlock/Kconfig
-@@ -53,4 +53,17 @@ config HSEM_U8500
-
- If unsure, say N.
-
-+config HWSPINLOCK_RCAR
-+ bool "R-Car Hardware Spinlock functionality"
-+ depends on ARCH_RENESAS
-+ select HWSPINLOCK
-+ default y
-+ help
-+ Say y here to support the R-Car Hardware Spinlock functionality, which
-+ provides a synchronisation mechanism for the various processor on the
-+ SoC.
-+ This function is implemented with MFIS device.
-+
-+ If unsure, say N.
-+
- endmenu
-diff --git a/drivers/hwspinlock/Makefile b/drivers/hwspinlock/Makefile
-index 6b59cb5a..4ee4001 100644
---- a/drivers/hwspinlock/Makefile
-+++ b/drivers/hwspinlock/Makefile
-@@ -6,4 +6,5 @@ obj-$(CONFIG_HWSPINLOCK) += hwspinlock_core.o
- obj-$(CONFIG_HWSPINLOCK_OMAP) += omap_hwspinlock.o
- obj-$(CONFIG_HWSPINLOCK_QCOM) += qcom_hwspinlock.o
- obj-$(CONFIG_HWSPINLOCK_SIRF) += sirf_hwspinlock.o
-+obj-$(CONFIG_HWSPINLOCK_RCAR) += rcar_hwspinlock.o
- obj-$(CONFIG_HSEM_U8500) += u8500_hsem.o
-diff --git a/drivers/hwspinlock/rcar_hwspinlock.c b/drivers/hwspinlock/rcar_hwspinlock.c
-new file mode 100644
-index 0000000..35ba8c1
---- /dev/null
-+++ b/drivers/hwspinlock/rcar_hwspinlock.c
-@@ -0,0 +1,156 @@
-+/*
-+ * rcar_hwspinlock.c
-+ *
-+ * Copyright (C) 2016 Renesas Electronics Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2
-+ * as published by the Free Software Foundation.
-+ *
-+ * 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/clk.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/pm_runtime.h>
-+#include <linux/of.h>
-+#include <linux/of_device.h>
-+#include <linux/of_address.h>
-+#include <linux/platform_device.h>
-+#include <linux/io.h>
-+
-+#include "hwspinlock_internal.h"
-+
-+#define RCAR_HWSPINLOCK_NUM (8)
-+
-+static int rcar_hwspinlock_trylock(struct hwspinlock *lock)
-+{
-+ void __iomem *addr = lock->priv;
-+
-+ return !ioread32(addr);
-+}
-+
-+static void rcar_hwspinlock_unlock(struct hwspinlock *lock)
-+{
-+ void __iomem *addr = lock->priv;
-+
-+ iowrite32(0, addr);
-+}
-+
-+static const struct hwspinlock_ops rcar_hwspinlock_ops = {
-+ .trylock = rcar_hwspinlock_trylock,
-+ .unlock = rcar_hwspinlock_unlock,
-+};
-+
-+static const struct of_device_id rcar_hwspinlock_of_match[] = {
-+ { .compatible = "renesas,mfis-lock" },
-+ { },
-+};
-+MODULE_DEVICE_TABLE(of, rcar_hwspinlock_of_match);
-+
-+static int rcar_hwspinlock_probe(struct platform_device *pdev)
-+{
-+ int idx;
-+ int ret = 0;
-+ u32 __iomem *addr;
-+ struct hwspinlock_device *bank;
-+ struct hwspinlock *lock;
-+ struct resource *res = NULL;
-+ struct clk *clock;
-+
-+ /* enable MFIS clock */
-+ clock = of_clk_get(pdev->dev.of_node, 0);
-+ if (!clock) {
-+ dev_err(&pdev->dev, "Failed to get clock.\n");
-+ ret = PTR_ERR(clock);
-+ goto out;
-+ }
-+ clk_prepare_enable(clock);
-+
-+ pm_runtime_enable(&pdev->dev);
-+
-+ /* map MFIS register */
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ addr = (u32 __iomem *)devm_ioremap_nocache(&pdev->dev,
-+ res->start, resource_size(res));
-+ if (IS_ERR(addr)) {
-+ dev_err(&pdev->dev, "Failed to remap MFIS Lock register.\n");
-+ ret = PTR_ERR(addr);
-+ goto clk_disable;
-+ }
-+
-+ /* create hwspinlock control info */
-+ bank = devm_kzalloc(&pdev->dev,
-+ sizeof(*bank) + sizeof(*lock) * RCAR_HWSPINLOCK_NUM,
-+ GFP_KERNEL);
-+ if (!bank) {
-+ dev_err(&pdev->dev, "Failed to allocate memory.\n");
-+ ret = PTR_ERR(bank);
-+ goto clk_disable;
-+ }
-+
-+ for (idx = 0; idx < RCAR_HWSPINLOCK_NUM; idx++) {
-+ lock = &bank->lock[idx];
-+ lock->priv = &addr[idx];
-+ }
-+ platform_set_drvdata(pdev, bank);
-+
-+ /* register hwspinlock */
-+ ret = hwspin_lock_register(bank, &pdev->dev, &rcar_hwspinlock_ops,
-+ 0, RCAR_HWSPINLOCK_NUM);
-+ if (!ret)
-+ goto out;
-+
-+clk_disable:
-+ if (clock)
-+ clk_disable_unprepare(clock);
-+
-+out:
-+ return ret;
-+}
-+
-+static int rcar_hwspinlock_remove(struct platform_device *pdev)
-+{
-+ int ret;
-+ struct clk *clock = NULL;
-+
-+ ret = hwspin_lock_unregister(platform_get_drvdata(pdev));
-+ if (ret) {
-+ dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);
-+ return ret;
-+ }
-+
-+ pm_runtime_disable(&pdev->dev);
-+ clock = of_clk_get(pdev->dev.of_node, 0);
-+ if (clock)
-+ clk_disable_unprepare(clock);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver rcar_hwspinlock_driver = {
-+ .probe = rcar_hwspinlock_probe,
-+ .remove = rcar_hwspinlock_remove,
-+ .driver = {
-+ .name = "rcar_hwspinlock",
-+ .of_match_table = rcar_hwspinlock_of_match,
-+ },
-+};
-+
-+static int __init rcar_hwspinlock_init(void)
-+{
-+ return platform_driver_register(&rcar_hwspinlock_driver);
-+}
-+core_initcall(rcar_hwspinlock_init);
-+
-+static void __exit rcar_hwspinlock_exit(void)
-+{
-+ platform_driver_unregister(&rcar_hwspinlock_driver);
-+}
-+module_exit(rcar_hwspinlock_exit);
-+
-+MODULE_LICENSE("GPL v2");
---
-1.9.1
-