From d2200da9e6dec280b0ed02e76d5e9e71573eea1e Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 28 Sep 2022 16:26:13 +0200 Subject: [PATCH] ARM: omap2: remove unused omap2_pm_init The omap2420_init_late() and omap2430_init_late() functions are never called. Removing them also shows that the entire arch/arm/mach-omap2/pm24xx.c file is unused and can be removed. Acked-by: Tony Lindgren Signed-off-by: Arnd Bergmann --- arch/arm/mach-omap2/Makefile | 1 - arch/arm/mach-omap2/common.h | 9 - arch/arm/mach-omap2/io.c | 10 -- arch/arm/mach-omap2/pm24xx.c | 312 ----------------------------------- 4 files changed, 332 deletions(-) delete mode 100644 arch/arm/mach-omap2/pm24xx.c diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 43b44e0858c1..daf21127c82f 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -80,7 +80,6 @@ obj-$(CONFIG_ARCH_OMAP4) += $(omap-4-5-pm-common) obj-$(CONFIG_SOC_OMAP5) += $(omap-4-5-pm-common) ifeq ($(CONFIG_PM),y) -obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o omap-4-5-pm-common += pm44xx.o diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 112e7966107c..ebf0266e1943 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -44,15 +44,6 @@ extern int (*omap_pm_soc_init)(void); int omap_pm_nop_init(void); -#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP2) -int omap2_pm_init(void); -#else -static inline int omap2_pm_init(void) -{ - return 0; -} -#endif - #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) int omap3_pm_init(void); #else diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index e45a3ce97085..81cb175c2dbe 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -435,11 +435,6 @@ void __init omap2420_init_early(void) omap_clk_soc_init = omap2420_dt_clk_init; rate_table = omap2420_rate_table; } - -void __init omap2420_init_late(void) -{ - omap_pm_soc_init = omap2_pm_init; -} #endif #ifdef CONFIG_SOC_OMAP2430 @@ -459,11 +454,6 @@ void __init omap2430_init_early(void) omap_clk_soc_init = omap2430_dt_clk_init; rate_table = omap2430_rate_table; } - -void __init omap2430_init_late(void) -{ - omap_pm_soc_init = omap2_pm_init; -} #endif /* diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c deleted file mode 100644 index 6953c47d8dc6..000000000000 --- a/arch/arm/mach-omap2/pm24xx.c +++ /dev/null @@ -1,312 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * OMAP2 Power Management Routines - * - * Copyright (C) 2005 Texas Instruments, Inc. - * Copyright (C) 2006-2008 Nokia Corporation - * - * Written by: - * Richard Woodruff - * Tony Lindgren - * Juha Yrjola - * Amit Kucheria - * Igor Stoppa - * - * Based on pm.c for omap1 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include - -#include - -#include "soc.h" -#include "common.h" -#include "clock.h" -#include "prm2xxx.h" -#include "prm-regbits-24xx.h" -#include "cm2xxx.h" -#include "cm-regbits-24xx.h" -#include "sdrc.h" -#include "sram.h" -#include "pm.h" -#include "control.h" -#include "powerdomain.h" -#include "clockdomain.h" - -static void (*omap2_sram_suspend)(u32 dllctrl, void __iomem *sdrc_dlla_ctrl, - void __iomem *sdrc_power); - -static struct powerdomain *mpu_pwrdm, *core_pwrdm; -static struct clockdomain *dsp_clkdm, *mpu_clkdm, *wkup_clkdm, *gfx_clkdm; - -static struct clk *osc_ck, *emul_ck; - -static int omap2_enter_full_retention(void) -{ - u32 l; - - /* There is 1 reference hold for all children of the oscillator - * clock, the following will remove it. If no one else uses the - * oscillator itself it will be disabled if/when we enter retention - * mode. - */ - clk_disable(osc_ck); - - /* Clear old wake-up events */ - /* REVISIT: These write to reserved bits? */ - omap_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); - omap_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); - omap_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); - - pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET); - pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); - - /* Workaround to kill USB */ - l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL; - omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0); - - /* One last check for pending IRQs to avoid extra latency due - * to sleeping unnecessarily. */ - if (omap_irq_pending()) - goto no_sleep; - - /* Jump to SRAM suspend code */ - omap2_sram_suspend(sdrc_read_reg(SDRC_DLLA_CTRL), - OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL), - OMAP_SDRC_REGADDR(SDRC_POWER)); - -no_sleep: - clk_enable(osc_ck); - - /* clear CORE wake-up events */ - omap_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); - omap_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); - - /* wakeup domain events - bit 1: GPT1, bit5 GPIO */ - omap_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, 0x4 | 0x1); - - /* MPU domain wake events */ - omap_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, 0x1); - - omap_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, 0x20); - - pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); - pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_ON); - - return 0; -} - -static int sti_console_enabled; - -static int omap2_allow_mpu_retention(void) -{ - if (!omap2xxx_cm_mpu_retention_allowed()) - return 0; - if (sti_console_enabled) - return 0; - - return 1; -} - -static void omap2_enter_mpu_retention(void) -{ - const int zero = 0; - - /* The peripherals seem not to be able to wake up the MPU when - * it is in retention mode. */ - if (omap2_allow_mpu_retention()) { - /* REVISIT: These write to reserved bits? */ - omap_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); - omap_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); - omap_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); - - /* Try to enter MPU retention */ - pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); - - } else { - /* Block MPU retention */ - pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); - } - - /* WFI */ - asm("mcr p15, 0, %0, c7, c0, 4" : : "r" (zero) : "memory", "cc"); - - pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); -} - -static int omap2_can_sleep(void) -{ - if (omap2xxx_cm_fclks_active()) - return 0; - if (__clk_is_enabled(osc_ck)) - return 0; - - return 1; -} - -static void omap2_pm_idle(void) -{ - int error; - - if (omap_irq_pending()) - return; - - error = cpu_cluster_pm_enter(); - if (error || !omap2_can_sleep()) { - omap2_enter_mpu_retention(); - goto out_cpu_cluster_pm; - } - - omap2_enter_full_retention(); - -out_cpu_cluster_pm: - cpu_cluster_pm_exit(); -} - -static void __init prcm_setup_regs(void) -{ - int i, num_mem_banks; - struct powerdomain *pwrdm; - - /* - * Enable autoidle - * XXX This should be handled by hwmod code or PRCM init code - */ - omap2_prm_write_mod_reg(OMAP24XX_AUTOIDLE_MASK, OCP_MOD, - OMAP2_PRCM_SYSCONFIG_OFFSET); - - /* - * Set CORE powerdomain memory banks to retain their contents - * during RETENTION - */ - num_mem_banks = pwrdm_get_mem_bank_count(core_pwrdm); - for (i = 0; i < num_mem_banks; i++) - pwrdm_set_mem_retst(core_pwrdm, i, PWRDM_POWER_RET); - - pwrdm_set_logic_retst(core_pwrdm, PWRDM_POWER_RET); - - pwrdm_set_logic_retst(mpu_pwrdm, PWRDM_POWER_RET); - - /* Force-power down DSP, GFX powerdomains */ - - pwrdm = clkdm_get_pwrdm(dsp_clkdm); - pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF); - - pwrdm = clkdm_get_pwrdm(gfx_clkdm); - pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF); - - /* Enable hardware-supervised idle for all clkdms */ - clkdm_for_each(omap_pm_clkdms_setup, NULL); - clkdm_add_wkdep(mpu_clkdm, wkup_clkdm); - - omap_common_suspend_init(omap2_enter_full_retention); - - /* REVISIT: Configure number of 32 kHz clock cycles for sys_clk - * stabilisation */ - omap2_prm_write_mod_reg(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, - OMAP2_PRCM_CLKSSETUP_OFFSET); - - /* Configure automatic voltage transition */ - omap2_prm_write_mod_reg(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, - OMAP2_PRCM_VOLTSETUP_OFFSET); - omap2_prm_write_mod_reg(OMAP24XX_AUTO_EXTVOLT_MASK | - (0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) | - OMAP24XX_MEMRETCTRL_MASK | - (0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) | - (0x0 << OMAP24XX_VOLT_LEVEL_SHIFT), - OMAP24XX_GR_MOD, OMAP2_PRCM_VOLTCTRL_OFFSET); - - /* Enable wake-up events */ - omap2_prm_write_mod_reg(OMAP24XX_EN_GPIOS_MASK | OMAP24XX_EN_GPT1_MASK, - WKUP_MOD, PM_WKEN); - - /* Enable SYS_CLKEN control when all domains idle */ - omap2_prm_set_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, OMAP24XX_GR_MOD, - OMAP2_PRCM_CLKSRC_CTRL_OFFSET); -} - -int __init omap2_pm_init(void) -{ - u32 l; - - printk(KERN_INFO "Power Management for OMAP2 initializing\n"); - l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_REVISION_OFFSET); - printk(KERN_INFO "PRCM revision %d.%d\n", (l >> 4) & 0x0f, l & 0x0f); - - /* Look up important powerdomains */ - - mpu_pwrdm = pwrdm_lookup("mpu_pwrdm"); - if (!mpu_pwrdm) - pr_err("PM: mpu_pwrdm not found\n"); - - core_pwrdm = pwrdm_lookup("core_pwrdm"); - if (!core_pwrdm) - pr_err("PM: core_pwrdm not found\n"); - - /* Look up important clockdomains */ - - mpu_clkdm = clkdm_lookup("mpu_clkdm"); - if (!mpu_clkdm) - pr_err("PM: mpu_clkdm not found\n"); - - wkup_clkdm = clkdm_lookup("wkup_clkdm"); - if (!wkup_clkdm) - pr_err("PM: wkup_clkdm not found\n"); - - dsp_clkdm = clkdm_lookup("dsp_clkdm"); - if (!dsp_clkdm) - pr_err("PM: dsp_clkdm not found\n"); - - gfx_clkdm = clkdm_lookup("gfx_clkdm"); - if (!gfx_clkdm) - pr_err("PM: gfx_clkdm not found\n"); - - - osc_ck = clk_get(NULL, "osc_ck"); - if (IS_ERR(osc_ck)) { - printk(KERN_ERR "could not get osc_ck\n"); - return -ENODEV; - } - - if (cpu_is_omap242x()) { - emul_ck = clk_get(NULL, "emul_ck"); - if (IS_ERR(emul_ck)) { - printk(KERN_ERR "could not get emul_ck\n"); - clk_put(osc_ck); - return -ENODEV; - } - } - - prcm_setup_regs(); - - /* - * We copy the assembler sleep/wakeup routines to SRAM. - * These routines need to be in SRAM as that's the only - * memory the MPU can see when it wakes up after the entire - * chip enters idle. - */ - omap2_sram_suspend = omap_sram_push(omap24xx_cpu_suspend, - omap24xx_cpu_suspend_sz); - - arm_pm_idle = omap2_pm_idle; - - return 0; -}