diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0173-cpufreq-Add-module-to-register-cpufreq-krait-device.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0173-cpufreq-Add-module-to-register-cpufreq-krait-device.patch | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0173-cpufreq-Add-module-to-register-cpufreq-krait-device.patch b/target/linux/ipq806x/patches/0173-cpufreq-Add-module-to-register-cpufreq-krait-device.patch new file mode 100644 index 0000000000..c43221070c --- /dev/null +++ b/target/linux/ipq806x/patches/0173-cpufreq-Add-module-to-register-cpufreq-krait-device.patch @@ -0,0 +1,104 @@ +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 + +diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm +index 3129749..6ae884d 100644 +--- 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 +diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile +index f6f4485..f5d18a3 100644 +--- a/drivers/cpufreq/Makefile ++++ b/drivers/cpufreq/Makefile +@@ -60,6 +60,7 @@ obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o + obj-$(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 +diff --git a/drivers/cpufreq/qcom-cpufreq.c b/drivers/cpufreq/qcom-cpufreq.c +new file mode 100644 +index 0000000..71f4387 +--- /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"); +-- +1.7.10.4 + |