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-rw-r--r--arch/arm/mach-prima2/rstc.c107
1 files changed, 0 insertions, 107 deletions
diff --git a/arch/arm/mach-prima2/rstc.c b/arch/arm/mach-prima2/rstc.c
deleted file mode 100644
index 9d56606ac87f..000000000000
--- a/arch/arm/mach-prima2/rstc.c
+++ /dev/null
@@ -1,107 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * reset controller for CSR SiRFprimaII
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
-#include <linux/reboot.h>
-#include <linux/reset-controller.h>
-
-#include <asm/system_misc.h>
-
-#define SIRFSOC_RSTBIT_NUM 64
-
-static void __iomem *sirfsoc_rstc_base;
-static DEFINE_MUTEX(rstc_lock);
-
-static int sirfsoc_reset_module(struct reset_controller_dev *rcdev,
- unsigned long sw_reset_idx)
-{
- u32 reset_bit = sw_reset_idx;
-
- if (reset_bit >= SIRFSOC_RSTBIT_NUM)
- return -EINVAL;
-
- mutex_lock(&rstc_lock);
-
- /*
- * Writing 1 to this bit resets corresponding block.
- * Writing 0 to this bit de-asserts reset signal of the
- * corresponding block. datasheet doesn't require explicit
- * delay between the set and clear of reset bit. it could
- * be shorter if tests pass.
- */
- writel(readl(sirfsoc_rstc_base +
- (reset_bit / 32) * 4) | (1 << reset_bit),
- sirfsoc_rstc_base + (reset_bit / 32) * 4);
- msleep(20);
- writel(readl(sirfsoc_rstc_base +
- (reset_bit / 32) * 4) & ~(1 << reset_bit),
- sirfsoc_rstc_base + (reset_bit / 32) * 4);
-
- mutex_unlock(&rstc_lock);
-
- return 0;
-}
-
-static struct reset_control_ops sirfsoc_rstc_ops = {
- .reset = sirfsoc_reset_module,
-};
-
-static struct reset_controller_dev sirfsoc_reset_controller = {
- .ops = &sirfsoc_rstc_ops,
- .nr_resets = SIRFSOC_RSTBIT_NUM,
-};
-
-#define SIRFSOC_SYS_RST_BIT BIT(31)
-
-static void sirfsoc_restart(enum reboot_mode mode, const char *cmd)
-{
- writel(SIRFSOC_SYS_RST_BIT, sirfsoc_rstc_base);
-}
-
-static int sirfsoc_rstc_probe(struct platform_device *pdev)
-{
- struct device_node *np = pdev->dev.of_node;
- sirfsoc_rstc_base = of_iomap(np, 0);
- if (!sirfsoc_rstc_base) {
- dev_err(&pdev->dev, "unable to map rstc cpu registers\n");
- return -ENOMEM;
- }
-
- sirfsoc_reset_controller.of_node = np;
- arm_pm_restart = sirfsoc_restart;
-
- if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
- reset_controller_register(&sirfsoc_reset_controller);
-
- return 0;
-}
-
-static const struct of_device_id rstc_ids[] = {
- { .compatible = "sirf,prima2-rstc" },
- {},
-};
-
-static struct platform_driver sirfsoc_rstc_driver = {
- .probe = sirfsoc_rstc_probe,
- .driver = {
- .name = "sirfsoc_rstc",
- .of_match_table = rstc_ids,
- },
-};
-
-static int __init sirfsoc_rstc_init(void)
-{
- return platform_driver_register(&sirfsoc_rstc_driver);
-}
-subsys_initcall(sirfsoc_rstc_init);