ARM: davinci: remove unused cpuidle code

The cpuidle driver in mach-davinci is no longer used by anyone.
Remove it.

Link: https://lore.kernel.org/r/20240813082735.52402-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index 450883ea0e73644d1bd253ac5362c0b5d5f17065..31d22a5d8e1e11a3e7468e669fa003ddc7fa091a 100644 (file)
--- 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 (file)
index 78a1575..0000000
--- 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 (file)
index 976d430..0000000
--- 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 6939166c33c2989a81d5176f684b383714851310..5e73a725d5daf5f8951fa3f4ead93dee960be9c5 100644 (file)
--- 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"