diff options
Diffstat (limited to 'meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0016-Revert-hwspinlock-rcar-Add-support-for-R-Car-Gen3-Ha.patch')
| -rw-r--r-- | meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0016-Revert-hwspinlock-rcar-Add-support-for-R-Car-Gen3-Ha.patch | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0016-Revert-hwspinlock-rcar-Add-support-for-R-Car-Gen3-Ha.patch b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0016-Revert-hwspinlock-rcar-Add-support-for-R-Car-Gen3-Ha.patch new file mode 100644 index 0000000..7fd5650 --- /dev/null +++ b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0016-Revert-hwspinlock-rcar-Add-support-for-R-Car-Gen3-Ha.patch @@ -0,0 +1,220 @@ +From 90628b9c9b731cff9071a6d587431e0a4b8e5c0a Mon Sep 17 00:00:00 2001 +From: Hiroki Negishi <hiroki.negishi.bx@renesas.com> +Date: Mon, 13 Nov 2017 11:57:53 +0900 +Subject: [PATCH 16/23] Revert "hwspinlock: rcar: Add support for R-Car Gen3 + Hardware Spinlock" + +This reverts commit 18ff508d5241 ("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 | 162 ----------------------------------- + 3 files changed, 176 deletions(-) + delete mode 100644 drivers/hwspinlock/rcar_hwspinlock.c + +diff --git a/drivers/hwspinlock/Kconfig b/drivers/hwspinlock/Kconfig +index f0c0a35..73a4016 100644 +--- a/drivers/hwspinlock/Kconfig ++++ b/drivers/hwspinlock/Kconfig +@@ -53,17 +53,4 @@ 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 4ee4001..6b59cb5a 100644 +--- a/drivers/hwspinlock/Makefile ++++ b/drivers/hwspinlock/Makefile +@@ -6,5 +6,4 @@ 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 +deleted file mode 100644 +index 8b45c49..0000000 +--- a/drivers/hwspinlock/rcar_hwspinlock.c ++++ /dev/null +@@ -1,162 +0,0 @@ +-/* +- * rcar_hwspinlock.c +- * +- * Copyright (C) 2017 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/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 <linux/sys_soc.h> +- +-#include "hwspinlock_internal.h" +- +-#define MFISLCKR0_OFFSET 0x000000C0 +-#define MFISLCKR8_OFFSET 0x00000724 +-#define MFISLCKR_NUM_8 8 /* r8a7795 ES1.*, r8a7796 ES1.* */ +-#define MFISLCKR_NUM_64 64 +- +-static int rcar_hwspinlock_trylock(struct hwspinlock *lock) +-{ +- void *addr = lock->priv; +- +- return !ioread32((void __iomem *)addr); +-} +- +-static void rcar_hwspinlock_unlock(struct hwspinlock *lock) +-{ +- void *addr = lock->priv; +- +- iowrite32(0, (void __iomem *)addr); +-} +- +-static const struct hwspinlock_ops rcar_hwspinlock_ops = { +- .trylock = rcar_hwspinlock_trylock, +- .unlock = rcar_hwspinlock_unlock, +-}; +- +-static const struct soc_device_attribute mfislock_quirks_match[] = { +- { .soc_id = "r8a7795", .revision = "ES1.*" }, +- { .soc_id = "r8a7796", .revision = "ES1.*" }, +- { /* sentinel */ } +-}; +- +-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 ch; +- int num_locks = MFISLCKR_NUM_64; +- int ret = 0; +- u32 __iomem *addr; +- struct resource *res; +- struct hwspinlock_device *bank; +- +- /* allocate hwspinlock control info */ +- bank = devm_kzalloc(&pdev->dev, sizeof(*bank) +- + sizeof(struct hwspinlock) * MFISLCKR_NUM_64, +- GFP_KERNEL); +- if (!bank) { +- dev_err(&pdev->dev, "Failed to allocate memory.\n"); +- ret = -ENOMEM; +- goto out; +- } +- +- res = platform_get_resource(pdev, IORESOURCE_MEM, 0); +- +- /* map MFIS lock register */ +- addr = (u32 __iomem *)devm_ioremap_nocache(&pdev->dev, +- res->start, +- resource_size(res)); +- if (!addr) { +- dev_err(&pdev->dev, "Failed to remap register.\n"); +- ret = PTR_ERR(addr); +- goto out; +- } +- +- /* create lock for MFISLCKR0-7 */ +- for (ch = 0; ch < 8; ch++) +- bank->lock[ch].priv = (void __force *)addr + MFISLCKR0_OFFSET +- + sizeof(u32) * ch; +- +- /* create lock for MFISLCKR8-63 */ +- for (ch = 8; ch < 64; ch++) +- bank->lock[ch].priv = (void __force *)addr + MFISLCKR8_OFFSET +- + sizeof(u32) * (ch - 8); +- +- platform_set_drvdata(pdev, bank); +- +- ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); +- if (ret) +- goto out; +- +- pm_runtime_enable(&pdev->dev); +- +- /* register hwspinlock */ +- if (soc_device_match(mfislock_quirks_match)) +- num_locks = MFISLCKR_NUM_8; +- +- ret = hwspin_lock_register(bank, &pdev->dev, &rcar_hwspinlock_ops, +- 0, num_locks); +- if (ret) +- pm_runtime_disable(&pdev->dev); +- +-out: +- return ret; +-} +- +-static int rcar_hwspinlock_remove(struct platform_device *pdev) +-{ +- int ret; +- +- 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); +- +- 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 + |