From patchwork Tue May 19 11:33:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 11557507 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C0204913 for ; Tue, 19 May 2020 11:33:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3033207ED for ; Tue, 19 May 2020 11:33:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728573AbgESLdg (ORCPT ); Tue, 19 May 2020 07:33:36 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:8524 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726508AbgESLdf (ORCPT ); Tue, 19 May 2020 07:33:35 -0400 X-IronPort-AV: E=Sophos;i="5.73,409,1583161200"; d="scan'208";a="47264943" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 19 May 2020 20:33:34 +0900 Received: from localhost.localdomain (unknown [10.166.252.89]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 90CA640065AA; Tue, 19 May 2020 20:33:34 +0900 (JST) From: Yoshihiro Shimoda To: ulf.hansson@linaro.org Cc: linux-mmc@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH/RFC] mmc: core: Issue power_off_notify for eMMC Suspend-to-RAM Date: Tue, 19 May 2020 20:33:08 +0900 Message-Id: <1589887988-7362-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.7.4 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The commit 432356793415 ("mmc: core: Enable power_off_notify for eMMC shutdown sequence") enabled the power off notification even if MMC_CAP2_POWEROFF_NOTIFY (MMC_CAP2_FULL_PWR_CYCLE now) is not set. However, the mmc core lacks to issue the power off notificaiton when Suspend-to-{RAM,Disk} happens on the system. So, add Suspend-to-RAM support at first because this is easy to check by using pm_suspend_target_state condition on _mmc_suspend(). Signed-off-by: Yoshihiro Shimoda --- drivers/mmc/core/mmc.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 4203303..4a23f83 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -2027,6 +2028,12 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend) int err = 0; unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : EXT_CSD_POWER_OFF_LONG; + bool s2ram = false; + +#ifdef CONFIG_PM_SLEEP + if (pm_suspend_target_state == PM_SUSPEND_MEM) + s2ram = true; +#endif mmc_claim_host(host); @@ -2038,7 +2045,7 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend) goto out; if (mmc_can_poweroff_notify(host->card) && - ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) + ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || s2ram)) err = mmc_poweroff_notify(host->card, notify_type); else if (mmc_can_sleep(host->card)) err = mmc_sleep(host);