From patchwork Wed May 17 07:31:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 13244303 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2790C77B75 for ; Wed, 17 May 2023 07:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230035AbjEQHcU (ORCPT ); Wed, 17 May 2023 03:32:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229969AbjEQHcB (ORCPT ); Wed, 17 May 2023 03:32:01 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 788451717; Wed, 17 May 2023 00:31:58 -0700 (PDT) Received: from loongson.cn (unknown [10.20.42.35]) by gateway (Coremail) with SMTP id _____8Cxe+rtgmRkN2oJAA--.16218S3; Wed, 17 May 2023 15:31:57 +0800 (CST) Received: from user-pc.202.106.0.20 (unknown [10.20.42.35]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Axmr3lgmRk_1plAA--.41619S3; Wed, 17 May 2023 15:31:55 +0800 (CST) From: Yinbo Zhu To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Huacai Chen , WANG Xuerui , "Rafael J . Wysocki" , Pavel Machek , Tiezhu Yang , Marc Zyngier , Youling Tang , Baoqi Zhang , Arnd Bergmann , Yun Liu , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev Cc: Jianmin Lv , wanghongliang@loongson.cn, Liu Peibao , loongson-kernel@lists.loongnix.cn, Yinbo Zhu Subject: [PATCH v1 1/3] loongarch: export loongarch pm interface Date: Wed, 17 May 2023 15:31:47 +0800 Message-Id: <20230517073149.31980-2-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20230517073149.31980-1-zhuyinbo@loongson.cn> References: <20230517073149.31980-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Axmr3lgmRk_1plAA--.41619S3 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoWxCr4rXF1rtw47WFWDtw4fKrg_yoWrCry7p3 sFyrn8Kw4Fkr1rZryDtas8Xr15JrZ5Kr429a9rK3yUCwsrXw1rur1kKr98WF1jkw1rGF40 9ryFga1Y9F1UG3JanT9S1TB71UUUUjDqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bfkFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUXVWUAwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAaw2AFwI0_JF0_Jw1le2I262IYc4CY 6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrV C2j2WlYx0E2Ix0cI8IcVAFwI0_Jw0_WrylYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE 7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x 0EwIxGrwCF04k20xvE74AGY7Cv6cx26rWl4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxYO2xF xVAFwI0_JF0_Jw1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWw C2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Gr0_ Xr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJV WUCwCI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIY CTnIWIevJa73UjIFyTuYvjxU2iFxUUUUU Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Some Power Management Controllers need to support DTS and will use the suspend interface thus this patch was to export such interface for their use. Signed-off-by: Yinbo Zhu --- arch/loongarch/include/asm/acpi.h | 5 ++--- arch/loongarch/include/asm/suspend.h | 10 ++++++++++ arch/loongarch/power/suspend.c | 10 +++++----- arch/loongarch/power/suspend_asm.S | 8 ++++---- 4 files changed, 21 insertions(+), 12 deletions(-) create mode 100644 arch/loongarch/include/asm/suspend.h diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h index 976a810352c6..d63507cc705f 100644 --- a/arch/loongarch/include/asm/acpi.h +++ b/arch/loongarch/include/asm/acpi.h @@ -8,6 +8,7 @@ #ifndef _ASM_LOONGARCH_ACPI_H #define _ASM_LOONGARCH_ACPI_H +#include #ifdef CONFIG_ACPI extern int acpi_strict; extern int acpi_disabled; @@ -37,13 +38,11 @@ extern struct list_head acpi_wakeup_device_list; extern int loongarch_acpi_suspend(void); extern int (*acpi_suspend_lowlevel)(void); -extern void loongarch_suspend_enter(void); static inline unsigned long acpi_get_wakeup_address(void) { #ifdef CONFIG_SUSPEND - extern void loongarch_wakeup_start(void); - return (unsigned long)loongarch_wakeup_start; + return (unsigned long)loongson_wakeup_start; #endif return 0UL; } diff --git a/arch/loongarch/include/asm/suspend.h b/arch/loongarch/include/asm/suspend.h new file mode 100644 index 000000000000..a40b42f4f7f3 --- /dev/null +++ b/arch/loongarch/include/asm/suspend.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SUSPEND_H +#define __ASM_SUSPEND_H + +void loongson_common_resume(void); +void loongson_common_suspend(void); +void loongson_suspend_enter(void); +void loongson_wakeup_start(void); + +#endif diff --git a/arch/loongarch/power/suspend.c b/arch/loongarch/power/suspend.c index 5e19733e5e05..0587681b33ce 100644 --- a/arch/loongarch/power/suspend.c +++ b/arch/loongarch/power/suspend.c @@ -27,7 +27,7 @@ struct saved_registers { }; static struct saved_registers saved_regs; -static void arch_common_suspend(void) +void loongson_common_suspend(void) { save_counter(); saved_regs.pgd = csr_read64(LOONGARCH_CSR_PGDL); @@ -40,7 +40,7 @@ static void arch_common_suspend(void) loongarch_suspend_addr = loongson_sysconf.suspend_addr; } -static void arch_common_resume(void) +void loongson_common_resume(void) { sync_counter(); local_flush_tlb_all(); @@ -62,12 +62,12 @@ int loongarch_acpi_suspend(void) enable_gpe_wakeup(); enable_pci_wakeup(); - arch_common_suspend(); + loongson_common_suspend(); /* processor specific suspend */ - loongarch_suspend_enter(); + loongson_suspend_enter(); - arch_common_resume(); + loongson_common_resume(); return 0; } diff --git a/arch/loongarch/power/suspend_asm.S b/arch/loongarch/power/suspend_asm.S index e2fc3b4e31f0..809abd3b119d 100644 --- a/arch/loongarch/power/suspend_asm.S +++ b/arch/loongarch/power/suspend_asm.S @@ -57,13 +57,13 @@ .align 12 /* Sleep/wakeup code for Loongson-3 */ -SYM_FUNC_START(loongarch_suspend_enter) +SYM_FUNC_START(loongson_suspend_enter) SETUP_SLEEP bl __flush_cache_all /* Pass RA and SP to BIOS */ addi.d a1, sp, 0 - la.pcrel a0, loongarch_wakeup_start + la.pcrel a0, loongson_wakeup_start la.pcrel t0, loongarch_suspend_addr ld.d t0, t0, 0 jirl a0, t0, 0 /* Call BIOS's STR sleep routine */ @@ -72,7 +72,7 @@ SYM_FUNC_START(loongarch_suspend_enter) * This is where we return upon wakeup. * Reload all of the registers and return. */ -SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL) +SYM_INNER_LABEL(loongson_wakeup_start, SYM_L_GLOBAL) li.d t0, CSR_DMW0_INIT # UC, PLV0 csrwr t0, LOONGARCH_CSR_DMWIN0 li.d t0, CSR_DMW1_INIT # CA, PLV0 @@ -89,4 +89,4 @@ SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL) SETUP_WAKEUP addi.d sp, sp, PT_SIZE jr ra -SYM_FUNC_END(loongarch_suspend_enter) +SYM_FUNC_END(loongson_suspend_enter)