diff options
-rw-r--r-- | arch/arm/mach-davinci/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-davinci/cpuidle.c | 99 | ||||
-rw-r--r-- | arch/arm/mach-davinci/cpuidle.h | 15 | ||||
-rw-r--r-- | arch/arm/mach-davinci/devices-da8xx.c | 1 |
4 files changed, 0 insertions, 116 deletions
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 450883ea0e73..31d22a5d8e1e 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -16,7 +16,6 @@ obj-$(CONFIG_ARCH_DAVINCI_DA850) += da850.o pdata-quirks.o obj-y += da8xx-dt.o # Power Management -obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_HAVE_CLK) += pm_domain.o ifeq ($(CONFIG_SUSPEND),y) obj-$(CONFIG_ARCH_DAVINCI_DA850) += pm.o sleep.o diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c deleted file mode 100644 index 78a1575c387d..000000000000 --- a/arch/arm/mach-davinci/cpuidle.c +++ /dev/null @@ -1,99 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * CPU idle for DaVinci SoCs - * - * Copyright (C) 2009 Texas Instruments Incorporated. https://www.ti.com/ - * - * Derived from Marvell Kirkwood CPU idle code - * (arch/arm/mach-kirkwood/cpuidle.c) - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/cpuidle.h> -#include <linux/io.h> -#include <linux/export.h> -#include <asm/cpuidle.h> - -#include "cpuidle.h" -#include "ddr2.h" - -#define DAVINCI_CPUIDLE_MAX_STATES 2 - -static void __iomem *ddr2_reg_base; -static bool ddr2_pdown; - -static void davinci_save_ddr_power(int enter, bool pdown) -{ - u32 val; - - val = __raw_readl(ddr2_reg_base + DDR2_SDRCR_OFFSET); - - if (enter) { - if (pdown) - val |= DDR2_SRPD_BIT; - else - val &= ~DDR2_SRPD_BIT; - val |= DDR2_LPMODEN_BIT; - } else { - val &= ~(DDR2_SRPD_BIT | DDR2_LPMODEN_BIT); - } - - __raw_writel(val, ddr2_reg_base + DDR2_SDRCR_OFFSET); -} - -/* Actual code that puts the SoC in different idle states */ -static __cpuidle int davinci_enter_idle(struct cpuidle_device *dev, - struct cpuidle_driver *drv, int index) -{ - davinci_save_ddr_power(1, ddr2_pdown); - cpu_do_idle(); - davinci_save_ddr_power(0, ddr2_pdown); - - return index; -} - -static struct cpuidle_driver davinci_idle_driver = { - .name = "cpuidle-davinci", - .owner = THIS_MODULE, - .states[0] = ARM_CPUIDLE_WFI_STATE, - .states[1] = { - .enter = davinci_enter_idle, - .exit_latency = 10, - .target_residency = 10000, - .name = "DDR SR", - .desc = "WFI and DDR Self Refresh", - }, - .state_count = DAVINCI_CPUIDLE_MAX_STATES, -}; - -static int __init davinci_cpuidle_probe(struct platform_device *pdev) -{ - struct davinci_cpuidle_config *pdata = pdev->dev.platform_data; - - if (!pdata) { - dev_err(&pdev->dev, "cannot get platform data\n"); - return -ENOENT; - } - - ddr2_reg_base = pdata->ddr2_ctlr_base; - - ddr2_pdown = pdata->ddr2_pdown; - - return cpuidle_register(&davinci_idle_driver, NULL); -} - -static struct platform_driver davinci_cpuidle_driver = { - .driver = { - .name = "cpuidle-davinci", - }, -}; - -static int __init davinci_cpuidle_init(void) -{ - return platform_driver_probe(&davinci_cpuidle_driver, - davinci_cpuidle_probe); -} -device_initcall(davinci_cpuidle_init); - diff --git a/arch/arm/mach-davinci/cpuidle.h b/arch/arm/mach-davinci/cpuidle.h deleted file mode 100644 index 976d43073597..000000000000 --- a/arch/arm/mach-davinci/cpuidle.h +++ /dev/null @@ -1,15 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * TI DaVinci cpuidle platform support - * - * 2009 (C) Texas Instruments, Inc. https://www.ti.com/ - */ -#ifndef _MACH_DAVINCI_CPUIDLE_H -#define _MACH_DAVINCI_CPUIDLE_H - -struct davinci_cpuidle_config { - u32 ddr2_pdown; - void __iomem *ddr2_ctlr_base; -}; - -#endif diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c index 6939166c33c2..5e73a725d5da 100644 --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -21,7 +21,6 @@ #include "common.h" #include "cputype.h" #include "da8xx.h" -#include "cpuidle.h" #include "irqs.h" #include "sram.h" |