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Message-Id: <1422217845-18901-4-git-send-email-linux@roeck-us.net>
Date: Sun, 25 Jan 2015 12:30:42 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Sebastian Reichel <sre@...nel.org>
Cc: linux-pm@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
David Woodhouse <dwmw2@...radead.org>,
devicetree@...r.kernel.org,
Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
Grant Likely <grant.likely@...aro.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
Rob Herring <robh+dt@...nel.org>
Subject: [PATCH v2 3/6] power/reset: Remove sun6i reboot driver
sun6i restart is now handled by its watchdog driver directly,
so this driver is no longer needed.
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
drivers/power/reset/Kconfig | 6 ---
drivers/power/reset/Makefile | 1 -
drivers/power/reset/sun6i-reboot.c | 85 --------------------------------------
3 files changed, 92 deletions(-)
delete mode 100644 drivers/power/reset/sun6i-reboot.c
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index bf5acb3..4cb5744 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -109,12 +109,6 @@ config POWER_RESET_RESTART
Instead they restart, and u-boot holds the SoC until the
user presses a key. u-boot then boots into Linux.
-config POWER_RESET_SUN6I
- bool "Allwinner A31 SoC reset driver"
- depends on ARCH_SUNXI
- help
- Reboot support for the Allwinner A31 SoCs.
-
config POWER_RESET_ST
bool "ST restart power-off driver"
depends on ARCH_STI
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 1631652..11de15b 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -11,7 +11,6 @@ obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
-obj-$(CONFIG_POWER_RESET_SUN6I) += sun6i-reboot.o
obj-$(CONFIG_POWER_RESET_ST) += st-poweroff.o
obj-$(CONFIG_POWER_RESET_VERSATILE) += arm-versatile-reboot.o
obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
diff --git a/drivers/power/reset/sun6i-reboot.c b/drivers/power/reset/sun6i-reboot.c
deleted file mode 100644
index af2cd7f..0000000
--- a/drivers/power/reset/sun6i-reboot.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Allwinner A31 SoCs reset code
- *
- * Copyright (C) 2012-2014 Maxime Ripard
- *
- * Maxime Ripard <maxime.ripard@...e-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
-#include <linux/reboot.h>
-
-#include <asm/system_misc.h>
-
-#define SUN6I_WATCHDOG1_IRQ_REG 0x00
-#define SUN6I_WATCHDOG1_CTRL_REG 0x10
-#define SUN6I_WATCHDOG1_CTRL_RESTART BIT(0)
-#define SUN6I_WATCHDOG1_CONFIG_REG 0x14
-#define SUN6I_WATCHDOG1_CONFIG_RESTART BIT(0)
-#define SUN6I_WATCHDOG1_CONFIG_IRQ BIT(1)
-#define SUN6I_WATCHDOG1_MODE_REG 0x18
-#define SUN6I_WATCHDOG1_MODE_ENABLE BIT(0)
-
-static void __iomem *wdt_base;
-
-static void sun6i_wdt_restart(enum reboot_mode mode, const char *cmd)
-{
- if (!wdt_base)
- return;
-
- /* Disable interrupts */
- writel(0, wdt_base + SUN6I_WATCHDOG1_IRQ_REG);
-
- /* We want to disable the IRQ and just reset the whole system */
- writel(SUN6I_WATCHDOG1_CONFIG_RESTART,
- wdt_base + SUN6I_WATCHDOG1_CONFIG_REG);
-
- /* Enable timer. The default and lowest interval value is 0.5s */
- writel(SUN6I_WATCHDOG1_MODE_ENABLE,
- wdt_base + SUN6I_WATCHDOG1_MODE_REG);
-
- /* Restart the watchdog. */
- writel(SUN6I_WATCHDOG1_CTRL_RESTART,
- wdt_base + SUN6I_WATCHDOG1_CTRL_REG);
-
- while (1) {
- mdelay(5);
- writel(SUN6I_WATCHDOG1_MODE_ENABLE,
- wdt_base + SUN6I_WATCHDOG1_MODE_REG);
- }
-}
-
-static int sun6i_reboot_probe(struct platform_device *pdev)
-{
- wdt_base = of_iomap(pdev->dev.of_node, 0);
- if (!wdt_base) {
- WARN(1, "failed to map watchdog base address");
- return -ENODEV;
- }
-
- arm_pm_restart = sun6i_wdt_restart;
-
- return 0;
-}
-
-static struct of_device_id sun6i_reboot_of_match[] = {
- { .compatible = "allwinner,sun6i-a31-wdt" },
- {}
-};
-
-static struct platform_driver sun6i_reboot_driver = {
- .probe = sun6i_reboot_probe,
- .driver = {
- .name = "sun6i-reboot",
- .of_match_table = sun6i_reboot_of_match,
- },
-};
-module_platform_driver(sun6i_reboot_driver);
--
2.1.0
--
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