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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 09:18:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 09:18:17 -0700
commit7d2b6ef19cf0f98cef17aa5185de3631a618710a (patch)
treed4e87f3c47837fef59ef15273f89f68b73d963af /drivers/bus/simple-pm-bus.c
parent5c73cc4b6c83e88863a5de869cc5df3b913aef4a (diff)
parent7415d97ee2b809119270fc3a365968ff8d4f544b (diff)
downloadlwn-7d2b6ef19cf0f98cef17aa5185de3631a618710a.tar.gz
lwn-7d2b6ef19cf0f98cef17aa5185de3631a618710a.zip
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson: "Driver updates for v4.1. Some of these are for drivers/soc, where we find more and more SoC-specific drivers these days. Some are for other driver subsystems where we have received acks from the appropriate maintainers. The larger parts of this branch are: - MediaTek support for their PMIC wrapper interface, a high-level interface for talking to the system PMIC over a dedicated I2C interface. - Qualcomm SCM driver has been moved to drivers/firmware. It's used for CPU up/down and needs to be in a shared location for arm/arm64 common code. - cleanup of ARM-CCI PMU code. - another set of cleanusp to the OMAP GPMC code" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits) soc/mediatek: Remove unused variables clocksource: atmel-st: select MFD_SYSCON soc: mediatek: Add PMIC wrapper for MT8135 and MT8173 SoCs arm-cci: Fix CCI PMU event validation arm-cci: Split the code for PMU vs driver support arm-cci: Get rid of secure transactions for PMU driver arm-cci: Abstract the CCI400 PMU specific definitions arm-cci: Rearrange code for splitting PMU vs driver code drivers: cci: reject groups spanning multiple HW PMUs ARM: at91: remove useless include clocksource: atmel-st: remove mach/hardware dependency clocksource: atmel-st: use syscon/regmap ARM: at91: time: move the system timer driver to drivers/clocksource ARM: at91: properly initialize timer ARM: at91: at91rm9200: remove deprecated arm_pm_restart watchdog: at91rm9200: implement restart handler watchdog: at91rm9200: use the system timer syscon mfd: syscon: Add atmel system timer registers definition ARM: at91/dt: declare atmel,at91rm9200-st as a syscon soc: qcom: gsbi: Add support for ADM CRCI muxing ...
Diffstat (limited to 'drivers/bus/simple-pm-bus.c')
-rw-r--r--drivers/bus/simple-pm-bus.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/bus/simple-pm-bus.c b/drivers/bus/simple-pm-bus.c
new file mode 100644
index 000000000000..c5eb46cbf388
--- /dev/null
+++ b/drivers/bus/simple-pm-bus.c
@@ -0,0 +1,58 @@
+/*
+ * Simple Power-Managed Bus Driver
+ *
+ * Copyright (C) 2014-2015 Glider bvba
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+
+static int simple_pm_bus_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ pm_runtime_enable(&pdev->dev);
+
+ if (np)
+ of_platform_populate(np, NULL, NULL, &pdev->dev);
+
+ return 0;
+}
+
+static int simple_pm_bus_remove(struct platform_device *pdev)
+{
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id simple_pm_bus_of_match[] = {
+ { .compatible = "simple-pm-bus", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
+
+static struct platform_driver simple_pm_bus_driver = {
+ .probe = simple_pm_bus_probe,
+ .remove = simple_pm_bus_remove,
+ .driver = {
+ .name = "simple-pm-bus",
+ .of_match_table = simple_pm_bus_of_match,
+ },
+};
+
+module_platform_driver(simple_pm_bus_driver);
+
+MODULE_DESCRIPTION("Simple Power-Managed Bus Driver");
+MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>");
+MODULE_LICENSE("GPL v2");