You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.9 KiB
94 lines
2.9 KiB
From f1db56284b01b1212a211023dcaa7846fd07d0ec Mon Sep 17 00:00:00 2001
|
|
From: Stephen Boyd <sboyd@codeaurora.org>
|
|
Date: Fri, 30 May 2014 17:16:53 -0700
|
|
Subject: [PATCH 173/182] cpufreq: Add module to register cpufreq-krait device
|
|
|
|
Register a cpufreq-krait device whenever we detect that a
|
|
"qcom,krait" compatible CPU is present in DT.
|
|
|
|
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
|
|
---
|
|
drivers/cpufreq/Kconfig.arm | 8 +++++++
|
|
drivers/cpufreq/Makefile | 1 +
|
|
drivers/cpufreq/qcom-cpufreq.c | 48 ++++++++++++++++++++++++++++++++++++++++
|
|
3 files changed, 57 insertions(+)
|
|
create mode 100644 drivers/cpufreq/qcom-cpufreq.c
|
|
|
|
--- a/drivers/cpufreq/Kconfig.arm
|
|
+++ b/drivers/cpufreq/Kconfig.arm
|
|
@@ -123,6 +123,14 @@ config ARM_OMAP2PLUS_CPUFREQ
|
|
depends on ARCH_OMAP2PLUS
|
|
default ARCH_OMAP2PLUS
|
|
|
|
+config ARM_QCOM_CPUFREQ
|
|
+ tristate "Qualcomm based"
|
|
+ depends on ARCH_QCOM
|
|
+ help
|
|
+ This adds the CPUFreq driver for Qualcomm SoC based boards.
|
|
+
|
|
+ If in doubt, say N.
|
|
+
|
|
config ARM_S3C_CPUFREQ
|
|
bool
|
|
help
|
|
--- a/drivers/cpufreq/Makefile
|
|
+++ b/drivers/cpufreq/Makefile
|
|
@@ -60,6 +60,7 @@ obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6
|
|
obj-$(CONFIG_ARM_INTEGRATOR) += integrator-cpufreq.o
|
|
obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o
|
|
obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o
|
|
+obj-$(CONFIG_ARM_QCOM_CPUFREQ) += qcom-cpufreq.o
|
|
obj-$(CONFIG_PXA25x) += pxa2xx-cpufreq.o
|
|
obj-$(CONFIG_PXA27x) += pxa2xx-cpufreq.o
|
|
obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o
|
|
--- /dev/null
|
|
+++ b/drivers/cpufreq/qcom-cpufreq.c
|
|
@@ -0,0 +1,48 @@
|
|
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 and
|
|
+ * only 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/kernel.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/cpu.h>
|
|
+#include <linux/of.h>
|
|
+#include <linux/platform_device.h>
|
|
+#include <linux/err.h>
|
|
+
|
|
+static int qcom_cpufreq_driver_init(void)
|
|
+{
|
|
+ struct platform_device_info devinfo = { .name = "cpufreq-krait", };
|
|
+ struct device *cpu_dev;
|
|
+ struct device_node *np;
|
|
+ struct platform_device *pdev;
|
|
+
|
|
+ cpu_dev = get_cpu_device(0);
|
|
+ if (!cpu_dev)
|
|
+ return -ENODEV;
|
|
+
|
|
+ np = of_node_get(cpu_dev->of_node);
|
|
+ if (!np)
|
|
+ return -ENOENT;
|
|
+
|
|
+ if (!of_device_is_compatible(np, "qcom,krait")) {
|
|
+ of_node_put(np);
|
|
+ return -ENODEV;
|
|
+ }
|
|
+ of_node_put(np);
|
|
+
|
|
+ pdev = platform_device_register_full(&devinfo);
|
|
+
|
|
+ return PTR_ERR_OR_ZERO(pdev);
|
|
+}
|
|
+module_init(qcom_cpufreq_driver_init);
|
|
+
|
|
+MODULE_DESCRIPTION("Qualcomm CPUfreq driver");
|
|
+MODULE_LICENSE("GPL v2");
|
|
|