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authorLinus Torvalds <torvalds@linux-foundation.org>2024-09-17 11:41:47 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2024-09-17 11:41:47 +0200
commita940d9a43e623d1ba1e5c499aa843516656c0ae4 (patch)
tree8cbcea0592de8b3e5bfe9dc1b739559a6785c9a2 /arch/arm/mach-davinci/cpuidle.c
parentMerge tag 'soc-defconfig-6.12' of git://git.kernel.org/pub/scm/linux/kernel/g... (diff)
parentMerge tag 'arm-soc/for-6.12/soc' of https://github.com/Broadcom/stblinux into... (diff)
downloadlinux-a940d9a43e623d1ba1e5c499aa843516656c0ae4.tar.xz
linux-a940d9a43e623d1ba1e5c499aa843516656c0ae4.zip
Merge tag 'soc-arm-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC ARM platform updates from Arnd Bergmann: "Most of these updates are for removing dead code on the Samsung S3C, NXP i.MX, TI OMAP and TI DaVinci platforms, though this appears to be a coincidence. There are also cleanups for the Marvell Orion family and the Arm integrator series and a Kconfig change for Broadcom" * tag 'soc-arm-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: dove: Drop a write-only variable ARM: orion5x: Switch to new sys-off handler API ARM: mvebu: Warn about memory chunks too small for DDR training ARM: imx: Annotate imx7d_enet_init() as __init ARM: OMAP1: Remove unused declarations in arch/arm/mach-omap1/pm.h ARM: s3c: remove unused s3c2410_cpu_suspend() declaration ARM: s3c: remove unused declarations for s3c6400 ARM: s3c: Remove unused s3c_init_uart_irqs() declaration ARM: davinci: remove unused cpuidle code ARM: davinci: remove unused davinci_init_ide() declaration ARM: davinci: remove unused davinci_cfg_reg_list() declaration ARM: mach-imx: imx6sx: Remove Ethernet refclock setting MAINTAINERS: Add entry for Samsung Exynos850 SoC ARM: bcm: Select ARM_GIC_V3 for ARCH_BRCMSTB ARM: omap2: Switch to use kmemdup_array() ARM: omap1: Remove unused struct 'dma_link_info' ARM: s3c: Drop explicit initialization of struct i2c_device_id::driver_data to 0
Diffstat (limited to 'arch/arm/mach-davinci/cpuidle.c')
-rw-r--r--arch/arm/mach-davinci/cpuidle.c99
1 files changed, 0 insertions, 99 deletions
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);
-