From patchwork Thu Jun 16 05:37:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582534 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 8F6FCCCA47A for ; Thu, 16 Jun 2022 05:37:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358707AbiFPFhy (ORCPT ); Thu, 16 Jun 2022 01:37:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358713AbiFPFhn (ORCPT ); Thu, 16 Jun 2022 01:37:43 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 10E8357B05; Wed, 15 Jun 2022 22:37:38 -0700 (PDT) X-UUID: 616f2755938b4300ae28e73f226982f1-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:b428eaec-096f-4346-8ab2-655c129c59a5, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:b14ad71, CLOUDID:35aeb248-4c92-421c-ad91-b806c0f58b2a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 616f2755938b4300ae28e73f226982f1-20220616 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1416724095; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 01/11] scsi: ufs: Export ufshcd_uic_change_pwr_mode() Date: Thu, 16 Jun 2022 13:37:15 +0800 Message-ID: <20220616053725.5681-2-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Export ufshcd_uic_change_pwr_mode() to allow vendors to use it for SoC-specific power mode change design limitation. Reviewed-by: Bart Van Assche Signed-off-by: Stanley Chu --- drivers/ufs/core/ufshcd.c | 3 ++- include/ufs/ufshcd.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 936a6d5467c9..19e17c898319 100755 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -4091,7 +4091,7 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) * * Returns 0 on success, non-zero value on failure */ -static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) +int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) { struct uic_command uic_cmd = {0}; int ret; @@ -4116,6 +4116,7 @@ static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) out: return ret; } +EXPORT_SYMBOL_GPL(ufshcd_uic_change_pwr_mode); int ufshcd_link_recovery(struct ufs_hba *hba) { diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index a92271421718..aa778418703f 100755 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -1087,6 +1087,7 @@ extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel, u32 *mib_val, u8 peer); extern int ufshcd_config_pwr_mode(struct ufs_hba *hba, struct ufs_pa_layer_attr *desired_pwr_mode); +extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode); /* UIC command interfaces for DME primitives */ #define DME_LOCAL 0 From patchwork Thu Jun 16 05:37:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582733 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 A1951CCA47C for ; Thu, 16 Jun 2022 05:37:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358699AbiFPFhr (ORCPT ); Thu, 16 Jun 2022 01:37:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358706AbiFPFhm (ORCPT ); Thu, 16 Jun 2022 01:37:42 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C13921E3A; Wed, 15 Jun 2022 22:37:37 -0700 (PDT) X-UUID: 10507fdd25834b79a71f5d8f195ff300-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:3a080af5-037f-4bb7-88a7-1b69037f9202, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:b14ad71, CLOUDID:bd5b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 10507fdd25834b79a71f5d8f195ff300-20220616 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1926854105; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 02/11] scsi: ufs: Fix ADAPT logic for HS-G5 Date: Thu, 16 Jun 2022 13:37:16 +0800 Message-ID: <20220616053725.5681-3-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org ADAPT now is added not only for HS Gear4 mode but also higher gears. Fix the logic for higher gears. Reviewed-by: Bart Van Assche Signed-off-by: Stanley Chu --- drivers/ufs/core/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 19e17c898319..0d16739c67bb 100755 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3802,7 +3802,7 @@ int ufshcd_dme_configure_adapt(struct ufs_hba *hba, { int ret; - if (agreed_gear != UFS_HS_G4) + if (agreed_gear < UFS_HS_G4) adapt_val = PA_NO_ADAPT; ret = ufshcd_dme_set(hba, From patchwork Thu Jun 16 05:37:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582731 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 23DF2C43334 for ; Thu, 16 Jun 2022 05:37:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358664AbiFPFhx (ORCPT ); Thu, 16 Jun 2022 01:37:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57518 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358720AbiFPFhn (ORCPT ); Thu, 16 Jun 2022 01:37:43 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3DAE5838F; Wed, 15 Jun 2022 22:37:40 -0700 (PDT) X-UUID: 6ceafa1d88b94203b86dc0ae5105633d-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:edd4c073-8594-4c57-8fdc-3d47f83e6b1f, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:c45b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 6ceafa1d88b94203b86dc0ae5105633d-20220616 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 484333221; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , , Peter Wang Subject: [PATCH v5 03/11] scsi: ufs-mediatek: Introduce workaround for power mode change Date: Thu, 16 Jun 2022 13:37:17 +0800 Message-ID: <20220616053725.5681-4-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: CC Chou Some MediaTek SoC chips need special flow for power mode change, especially for chips supporting HS-G5. Enable the workaround by setting the host-specific capability. Reviewed-by: Stanley Chu Signed-off-by: CC Chou Signed-off-by: Eddie Huang Signed-off-by: Dennis Yu Signed-off-by: Peter Wang Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 60 +++++++++++++++++++++++++++++++-- drivers/ufs/host/ufs-mediatek.h | 1 + include/ufs/unipro.h | 1 + 3 files changed, 60 insertions(+), 2 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index beabc3ccd30b..2931fd21e38a 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -82,6 +82,13 @@ static bool ufs_mtk_is_broken_vcc(struct ufs_hba *hba) return !!(host->caps & UFS_MTK_CAP_BROKEN_VCC); } +static bool ufs_mtk_is_pmc_via_fastauto(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + return (host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO); +} + static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable) { u32 tmp; @@ -579,6 +586,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) if (of_property_read_bool(np, "mediatek,ufs-broken-vcc")) host->caps |= UFS_MTK_CAP_BROKEN_VCC; + if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto")) + host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO; + dev_info(hba->dev, "caps: 0x%x", host->caps); } @@ -754,6 +764,26 @@ static int ufs_mtk_init(struct ufs_hba *hba) return err; } +static bool ufs_mtk_pmc_via_fastauto(struct ufs_hba *hba, + struct ufs_pa_layer_attr *dev_req_params) +{ + if (!ufs_mtk_is_pmc_via_fastauto(hba)) + return false; + + if (dev_req_params->hs_rate == hba->pwr_info.hs_rate) + return false; + + if (dev_req_params->pwr_tx != FAST_MODE && + dev_req_params->gear_tx < UFS_HS_G4) + return false; + + if (dev_req_params->pwr_rx != FAST_MODE && + dev_req_params->gear_rx < UFS_HS_G4) + return false; + + return true; +} + static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, struct ufs_pa_layer_attr *dev_max_params, struct ufs_pa_layer_attr *dev_req_params) @@ -763,8 +793,8 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, int ret; ufshcd_init_pwr_dev_param(&host_cap); - host_cap.hs_rx_gear = UFS_HS_G4; - host_cap.hs_tx_gear = UFS_HS_G4; + host_cap.hs_rx_gear = UFS_HS_G5; + host_cap.hs_tx_gear = UFS_HS_G5; ret = ufshcd_get_pwr_dev_param(&host_cap, dev_max_params, @@ -774,6 +804,32 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, __func__); } + if (ufs_mtk_pmc_via_fastauto(hba, dev_req_params)) { + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), true); + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXGEAR), UFS_HS_G1); + + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), true); + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXGEAR), UFS_HS_G1); + + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_ACTIVETXDATALANES), + dev_req_params->lane_tx); + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_ACTIVERXDATALANES), + dev_req_params->lane_rx); + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HSSERIES), + dev_req_params->hs_rate); + + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXHSADAPTTYPE), + PA_NO_ADAPT); + + ret = ufshcd_uic_change_pwr_mode(hba, + FASTAUTO_MODE << 4 | FASTAUTO_MODE); + + if (ret) { + dev_err(hba->dev, "%s: HSG1B FASTAUTO failed ret=%d\n", + __func__, ret); + } + } + if (host->hw_ver.major >= 3) { ret = ufshcd_dme_configure_adapt(hba, dev_req_params->gear_tx, diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index 414dca86c09f..7e1913769671 100755 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -108,6 +108,7 @@ enum ufs_mtk_host_caps { UFS_MTK_CAP_VA09_PWR_CTRL = 1 << 1, UFS_MTK_CAP_DISABLE_AH8 = 1 << 2, UFS_MTK_CAP_BROKEN_VCC = 1 << 3, + UFS_MTK_CAP_PMC_VIA_FASTAUTO = 1 << 6, }; struct ufs_mtk_crypt_cfg { diff --git a/include/ufs/unipro.h b/include/ufs/unipro.h index 0521f887e3ac..4b13fbf8ee18 100755 --- a/include/ufs/unipro.h +++ b/include/ufs/unipro.h @@ -229,6 +229,7 @@ enum ufs_hs_gear_tag { UFS_HS_G2, /* HS Gear 2 */ UFS_HS_G3, /* HS Gear 3 */ UFS_HS_G4, /* HS Gear 4 */ + UFS_HS_G5 /* HS Gear 5 */ }; enum ufs_unipro_ver { From patchwork Thu Jun 16 05:37:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582533 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 32E0ACCA47A for ; 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Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 04/11] scsi: ufs-mediatek: Fix the timing of configuring device regulators Date: Thu, 16 Jun 2022 13:37:18 +0800 Message-ID: <20220616053725.5681-5-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Po-Wen Kao Currently the LPM configurations of device regulators may not work since VCC is not disabled yet while ufs_mtk_vreg_set_lpm() is executed. Fix it by changing the timing of invoking ufs_mtk_vreg_set_lpm(). Reviewed-by: Stanley Chu Signed-off-by: Po-Wen Kao Signed-off-by: Stanley Chu Change-Id: Ibbdb3a9a3557bb9e7e667da2c5a37e1e9f81450f --- drivers/ufs/host/ufs-mediatek.c | 58 ++++++++++++++++++++++++++++++--- 1 file changed, 53 insertions(+), 5 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 2931fd21e38a..817d957512a3 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1082,7 +1082,6 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op, * ufshcd_suspend() re-enabling regulators while vreg is still * in low-power mode. */ - ufs_mtk_vreg_set_lpm(hba, true); err = ufs_mtk_mphy_power_on(hba, false); if (err) goto fail; @@ -1106,12 +1105,13 @@ static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) { int err; + if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL) + ufs_mtk_vreg_set_lpm(hba, false); + err = ufs_mtk_mphy_power_on(hba, true); if (err) goto fail; - ufs_mtk_vreg_set_lpm(hba, false); - if (ufshcd_is_link_hibern8(hba)) { err = ufs_mtk_link_set_hpm(hba); if (err) @@ -1276,9 +1276,57 @@ static int ufs_mtk_remove(struct platform_device *pdev) return 0; } +int ufs_mtk_system_suspend(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int ret; + + ret = ufshcd_system_suspend(dev); + if (ret) + return ret; + + ufs_mtk_vreg_set_lpm(hba, true); + + return 0; +} + +int ufs_mtk_system_resume(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + + ufs_mtk_vreg_set_lpm(hba, false); + + return ufshcd_system_resume(dev); +} + +int ufs_mtk_runtime_suspend(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int ret = 0; + + ret = ufshcd_runtime_suspend(dev); + if (ret) + return ret; + + ufs_mtk_vreg_set_lpm(hba, true); + + return 0; +} + +int ufs_mtk_runtime_resume(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + + ufs_mtk_vreg_set_lpm(hba, false); + + return ufshcd_runtime_resume(dev); +} + static const struct dev_pm_ops ufs_mtk_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume) - SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(ufs_mtk_system_suspend, + ufs_mtk_system_resume) + SET_RUNTIME_PM_OPS(ufs_mtk_runtime_suspend, + ufs_mtk_runtime_resume, NULL) .prepare = ufshcd_suspend_prepare, .complete = ufshcd_resume_complete, }; From patchwork Thu Jun 16 05:37:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582536 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 7AC16C433EF for ; Thu, 16 Jun 2022 05:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358768AbiFPFht (ORCPT ); Thu, 16 Jun 2022 01:37:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242913AbiFPFhm (ORCPT ); Thu, 16 Jun 2022 01:37:42 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C37922287; Wed, 15 Jun 2022 22:37:37 -0700 (PDT) X-UUID: c6ef22e2381f41ddaf22038fcac92818-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:f03ffe46-879d-4c7d-bda3-a2028210b6d5, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:b14ad71, CLOUDID:bf5b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: c6ef22e2381f41ddaf22038fcac92818-20220616 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2095308324; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 05/11] scsi: ufs-mediatek: Prevent device regulators setting as LPM incorrectly Date: Thu, 16 Jun 2022 13:37:19 +0800 Message-ID: <20220616053725.5681-6-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Po-Wen Kao Device regulatrs are allowed to enter low-power mode if neither device is not in active mode, nor VCC does not keep on. Simply fix this by adding conditions before LPM decision. Reviewed-by: Stanley Chu Signed-off-by: Po-Wen Kao Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 817d957512a3..03762ecaaaf8 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1034,10 +1034,18 @@ static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) if (!hba->vreg_info.vccq2 || !hba->vreg_info.vcc) return; - if (lpm && !hba->vreg_info.vcc->enabled) + /* Bypass LPM when device is still active */ + if (lpm && ufshcd_is_ufs_dev_active(hba)) + return; + + /* Bypass LPM if VCC is enabled */ + if (lpm && hba->vreg_info.vcc->enabled) + return; + + if (lpm) regulator_set_mode(hba->vreg_info.vccq2->reg, REGULATOR_MODE_IDLE); - else if (!lpm) + else regulator_set_mode(hba->vreg_info.vccq2->reg, REGULATOR_MODE_NORMAL); } From patchwork Thu Jun 16 05:37:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582538 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 6AEA7C43334 for ; Thu, 16 Jun 2022 05:37:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358737AbiFPFho (ORCPT ); Thu, 16 Jun 2022 01:37:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358699AbiFPFhl (ORCPT ); Thu, 16 Jun 2022 01:37:41 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D4CE12D27; Wed, 15 Jun 2022 22:37:36 -0700 (PDT) X-UUID: ef4acbae587e470d82d518b96bb71aed-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:b161851e-c4dd-4560-a7e7-a1ddb6de332b, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:5 X-CID-META: VersionHash:b14ad71, CLOUDID:e05b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: ef4acbae587e470d82d518b96bb71aed-20220616 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 170455575; Thu, 16 Jun 2022 13:37:28 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:26 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:26 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 06/11] scsi: ufs-mediatek: Support low-power mode for VCCQ Date: Thu, 16 Jun 2022 13:37:20 +0800 Message-ID: <20220616053725.5681-7-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Peter Wang Also allow VCCQ to enter low-power mode, and meanwhile remove the restriction of VCC because VCCQ/VCCQ2 can be changed to low-power mode even if VCC keeps on while the device is not in active power mode. Reviewed-by: Stanley Chu Signed-off-by: Peter Wang Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 03762ecaaaf8..65a2a4185ef6 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1031,7 +1031,13 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) { - if (!hba->vreg_info.vccq2 || !hba->vreg_info.vcc) + struct ufs_vreg *vccqx = NULL; + + if (!hba->vreg_info.vccq && !hba->vreg_info.vccq2) + return; + + /* Skip if VCC is assumed always-on */ + if (!hba->vreg_info.vcc) return; /* Bypass LPM when device is still active */ @@ -1042,12 +1048,13 @@ static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) if (lpm && hba->vreg_info.vcc->enabled) return; - if (lpm) - regulator_set_mode(hba->vreg_info.vccq2->reg, - REGULATOR_MODE_IDLE); + if (hba->vreg_info.vccq) + vccqx = hba->vreg_info.vccq; else - regulator_set_mode(hba->vreg_info.vccq2->reg, - REGULATOR_MODE_NORMAL); + vccqx = hba->vreg_info.vccq2; + + regulator_set_mode(vccqx->reg, + lpm ? REGULATOR_MODE_IDLE : REGULATOR_MODE_NORMAL); } static void ufs_mtk_auto_hibern8_disable(struct ufs_hba *hba) From patchwork Thu Jun 16 05:37:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582537 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 DAA8CC433EF for ; Thu, 16 Jun 2022 05:37:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358753AbiFPFhq (ORCPT ); Thu, 16 Jun 2022 01:37:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358707AbiFPFhm (ORCPT ); Thu, 16 Jun 2022 01:37:42 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B1892251A; Wed, 15 Jun 2022 22:37:37 -0700 (PDT) X-UUID: 945be648b0884f6982eda365b7d33570-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:cd077dae-ee09-4591-93de-bddda7f36d43, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:5aaeb248-4c92-421c-ad91-b806c0f58b2a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 945be648b0884f6982eda365b7d33570-20220616 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 506156841; Thu, 16 Jun 2022 13:37:28 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:27 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 07/11] scsi: ufs-mediatek: Support flexible parameters for smc calls Date: Thu, 16 Jun 2022 13:37:21 +0800 Message-ID: <20220616053725.5681-8-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Provide flexible number of parameters for UFS SMC calls to be easily used for future SMC usages. This is a preparation patch for the next patch. Signed-off-by: Alice Chao Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 16 -------------- drivers/ufs/host/ufs-mediatek.h | 39 +++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+), 16 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 65a2a4185ef6..9c5d1213c290 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -30,22 +30,6 @@ #define CREATE_TRACE_POINTS #include "ufs-mediatek-trace.h" -#define ufs_mtk_smc(cmd, val, res) \ - arm_smccc_smc(MTK_SIP_UFS_CONTROL, \ - cmd, val, 0, 0, 0, 0, 0, &(res)) - -#define ufs_mtk_va09_pwr_ctrl(res, on) \ - ufs_mtk_smc(UFS_MTK_SIP_VA09_PWR_CTRL, on, res) - -#define ufs_mtk_crypto_ctrl(res, enable) \ - ufs_mtk_smc(UFS_MTK_SIP_CRYPTO_CTRL, enable, res) - -#define ufs_mtk_ref_clk_notify(on, res) \ - ufs_mtk_smc(UFS_MTK_SIP_REF_CLK_NOTIFICATION, on, res) - -#define ufs_mtk_device_reset_ctrl(high, res) \ - ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res) - static const struct ufs_dev_quirk ufs_mtk_dev_fixups[] = { { .wmanufacturerid = UFS_VENDOR_MICRON, .model = UFS_ANY_MODEL, diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index 7e1913769671..bf6ca96cafb6 100755 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -143,4 +143,43 @@ struct ufs_mtk_host { u32 ip_ver; }; +/* + * SMC call wrapper function + */ +struct ufs_mtk_smc_arg { + unsigned long cmd; + struct arm_smccc_res *res; + unsigned long v1; + unsigned long v2; + unsigned long v3; + unsigned long v4; + unsigned long v5; + unsigned long v6; + unsigned long v7; +}; + +static void _ufs_mtk_smc(struct ufs_mtk_smc_arg s) +{ + arm_smccc_smc(MTK_SIP_UFS_CONTROL, + s.cmd, s.v1, s.v2, s.v3, s.v4, s.v5, s.v6, s.res); +} + +#define ufs_mtk_smc(...) \ + _ufs_mtk_smc((struct ufs_mtk_smc_arg) {__VA_ARGS__}) + +/* + * SMC call interface + */ +#define ufs_mtk_va09_pwr_ctrl(res, on) \ + ufs_mtk_smc(UFS_MTK_SIP_VA09_PWR_CTRL, &(res), on) + +#define ufs_mtk_crypto_ctrl(res, enable) \ + ufs_mtk_smc(UFS_MTK_SIP_CRYPTO_CTRL, &(res), enable) + +#define ufs_mtk_ref_clk_notify(on, res) \ + ufs_mtk_smc(UFS_MTK_SIP_REF_CLK_NOTIFICATION, &(res), on) + +#define ufs_mtk_device_reset_ctrl(high, res) \ + ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high) + #endif /* !_UFS_MEDIATEK_H */ From patchwork Thu Jun 16 05:37:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582730 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 D1C33C43334 for ; Thu, 16 Jun 2022 05:37:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358814AbiFPFh5 (ORCPT ); Thu, 16 Jun 2022 01:37:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358712AbiFPFhn (ORCPT ); Thu, 16 Jun 2022 01:37:43 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A1CB57994; Wed, 15 Jun 2022 22:37:38 -0700 (PDT) X-UUID: 1b92cb7db42a4b52a3c1344b58c69e4b-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:e60f465b-8a35-4018-a805-2ac13ff9d634, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:e15b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 1b92cb7db42a4b52a3c1344b58c69e4b-20220616 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1720033446; Thu, 16 Jun 2022 13:37:28 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:27 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 08/11] scsi: ufs-mediatek: Support low-power mode for parents of VCCQx Date: Thu, 16 Jun 2022 13:37:22 +0800 Message-ID: <20220616053725.5681-9-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Provide the facility to configure parents of VCCQx power rails as low-power or full-power mode in MediaTek UFS platforms. Signed-off-by: Alice Chao Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 46 +++++++++++++++++++++++---------- drivers/ufs/host/ufs-mediatek.h | 4 +++ 2 files changed, 37 insertions(+), 13 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 9c5d1213c290..e756aba45acd 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1013,10 +1013,30 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) return 0; } -static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) +static void ufs_mtk_vccqx_set_lpm(struct ufs_hba *hba, bool lpm) { struct ufs_vreg *vccqx = NULL; + if (hba->vreg_info.vccq) + vccqx = hba->vreg_info.vccq; + else + vccqx = hba->vreg_info.vccq2; + + regulator_set_mode(vccqx->reg, + lpm ? REGULATOR_MODE_IDLE : REGULATOR_MODE_NORMAL); +} + +static void ufs_mtk_vsx_set_lpm(struct ufs_hba *hba, bool lpm) +{ + struct arm_smccc_res res; + + ufs_mtk_device_pwr_ctrl(!lpm, + (unsigned long)hba->dev_info.wspecversion, + res); +} + +static void ufs_mtk_dev_vreg_set_lpm(struct ufs_hba *hba, bool lpm) +{ if (!hba->vreg_info.vccq && !hba->vreg_info.vccq2) return; @@ -1032,13 +1052,13 @@ static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) if (lpm && hba->vreg_info.vcc->enabled) return; - if (hba->vreg_info.vccq) - vccqx = hba->vreg_info.vccq; - else - vccqx = hba->vreg_info.vccq2; - - regulator_set_mode(vccqx->reg, - lpm ? REGULATOR_MODE_IDLE : REGULATOR_MODE_NORMAL); + if (lpm) { + ufs_mtk_vccqx_set_lpm(hba, lpm); + ufs_mtk_vsx_set_lpm(hba, lpm); + } else { + ufs_mtk_vsx_set_lpm(hba, lpm); + ufs_mtk_vccqx_set_lpm(hba, lpm); + } } static void ufs_mtk_auto_hibern8_disable(struct ufs_hba *hba) @@ -1105,7 +1125,7 @@ static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) int err; if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL) - ufs_mtk_vreg_set_lpm(hba, false); + ufs_mtk_dev_vreg_set_lpm(hba, false); err = ufs_mtk_mphy_power_on(hba, true); if (err) @@ -1284,7 +1304,7 @@ int ufs_mtk_system_suspend(struct device *dev) if (ret) return ret; - ufs_mtk_vreg_set_lpm(hba, true); + ufs_mtk_dev_vreg_set_lpm(hba, true); return 0; } @@ -1293,7 +1313,7 @@ int ufs_mtk_system_resume(struct device *dev) { struct ufs_hba *hba = dev_get_drvdata(dev); - ufs_mtk_vreg_set_lpm(hba, false); + ufs_mtk_dev_vreg_set_lpm(hba, false); return ufshcd_system_resume(dev); } @@ -1307,7 +1327,7 @@ int ufs_mtk_runtime_suspend(struct device *dev) if (ret) return ret; - ufs_mtk_vreg_set_lpm(hba, true); + ufs_mtk_dev_vreg_set_lpm(hba, true); return 0; } @@ -1316,7 +1336,7 @@ int ufs_mtk_runtime_resume(struct device *dev) { struct ufs_hba *hba = dev_get_drvdata(dev); - ufs_mtk_vreg_set_lpm(hba, false); + ufs_mtk_dev_vreg_set_lpm(hba, false); return ufshcd_runtime_resume(dev); } diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index bf6ca96cafb6..5c6101ac518f 100755 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -83,6 +83,7 @@ enum { #define UFS_MTK_SIP_DEVICE_RESET BIT(1) #define UFS_MTK_SIP_CRYPTO_CTRL BIT(2) #define UFS_MTK_SIP_REF_CLK_NOTIFICATION BIT(3) +#define UFS_MTK_SIP_DEVICE_PWR_CTRL BIT(7) /* * VS_DEBUGCLOCKENABLE @@ -182,4 +183,7 @@ static void _ufs_mtk_smc(struct ufs_mtk_smc_arg s) #define ufs_mtk_device_reset_ctrl(high, res) \ ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high) +#define ufs_mtk_device_pwr_ctrl(on, ufs_ver, res) \ + ufs_mtk_smc(UFS_MTK_SIP_DEVICE_PWR_CTRL, &(res), on, ufs_ver) + #endif /* !_UFS_MEDIATEK_H */ From patchwork Thu Jun 16 05:37:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582735 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 01EA2C433EF for ; Thu, 16 Jun 2022 05:37:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358723AbiFPFhn (ORCPT ); Thu, 16 Jun 2022 01:37:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349153AbiFPFhk (ORCPT ); Thu, 16 Jun 2022 01:37:40 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01407120A5; Wed, 15 Jun 2022 22:37:35 -0700 (PDT) X-UUID: 9174b6845ed249e4b38dd9e42b325281-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:02d432d9-7078-40bb-83f7-fd496c604210, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:5faeb248-4c92-421c-ad91-b806c0f58b2a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 9174b6845ed249e4b38dd9e42b325281-20220616 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 344290406; Thu, 16 Jun 2022 13:37:29 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:27 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 09/11] scsi: ufs: Export regulator functions Date: Thu, 16 Jun 2022 13:37:23 +0800 Message-ID: <20220616053725.5681-10-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Export below regulator functions to allow vendors to customize regulator configuration in their own platforms. int ufshcd_populate_vreg(struct device *dev, const char *name, struct ufs_vreg **out_vreg); int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg); Signed-off-by: Stanley Chu --- drivers/ufs/core/ufshcd.c | 3 ++- drivers/ufs/host/ufshcd-pltfrm.c | 5 +++-- drivers/ufs/host/ufshcd-pltfrm.h | 2 ++ include/ufs/ufshcd.h | 2 ++ 4 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 0d16739c67bb..8131a75e41e5 100755 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8408,7 +8408,7 @@ static int ufshcd_setup_hba_vreg(struct ufs_hba *hba, bool on) return ufshcd_toggle_vreg(hba->dev, info->vdd_hba, on); } -static int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg) +int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg) { int ret = 0; @@ -8424,6 +8424,7 @@ static int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg) out: return ret; } +EXPORT_SYMBOL_GPL(ufshcd_get_vreg); static int ufshcd_init_vreg(struct ufs_hba *hba) { diff --git a/drivers/ufs/host/ufshcd-pltfrm.c b/drivers/ufs/host/ufshcd-pltfrm.c index e7332cc65b1f..2dd9c660531b 100755 --- a/drivers/ufs/host/ufshcd-pltfrm.c +++ b/drivers/ufs/host/ufshcd-pltfrm.c @@ -109,8 +109,8 @@ static int ufshcd_parse_clock_info(struct ufs_hba *hba) } #define MAX_PROP_SIZE 32 -static int ufshcd_populate_vreg(struct device *dev, const char *name, - struct ufs_vreg **out_vreg) +int ufshcd_populate_vreg(struct device *dev, const char *name, + struct ufs_vreg **out_vreg) { char prop_name[MAX_PROP_SIZE]; struct ufs_vreg *vreg = NULL; @@ -145,6 +145,7 @@ static int ufshcd_populate_vreg(struct device *dev, const char *name, *out_vreg = vreg; return 0; } +EXPORT_SYMBOL_GPL(ufshcd_populate_vreg); /** * ufshcd_parse_regulator_info - get regulator info from device tree diff --git a/drivers/ufs/host/ufshcd-pltfrm.h b/drivers/ufs/host/ufshcd-pltfrm.h index 43c2e412bd99..5130c9471dc2 100755 --- a/drivers/ufs/host/ufshcd-pltfrm.h +++ b/drivers/ufs/host/ufshcd-pltfrm.h @@ -32,5 +32,7 @@ void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param); int ufshcd_pltfrm_init(struct platform_device *pdev, const struct ufs_hba_variant_ops *vops); void ufshcd_pltfrm_shutdown(struct platform_device *pdev); +int ufshcd_populate_vreg(struct device *dev, const char *name, + struct ufs_vreg **out_vreg); #endif /* UFSHCD_PLTFRM_H_ */ diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index aa778418703f..18eb253cfd91 100755 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -1187,6 +1187,8 @@ void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id, u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba); +int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg); + int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd); int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba, From patchwork Thu Jun 16 05:37:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582535 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 918E7C433EF for ; Thu, 16 Jun 2022 05:37:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358784AbiFPFhv (ORCPT ); Thu, 16 Jun 2022 01:37:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358709AbiFPFhn (ORCPT ); Thu, 16 Jun 2022 01:37:43 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87E5C22500; Wed, 15 Jun 2022 22:37:37 -0700 (PDT) X-UUID: 3bb30c15473d4dbaaa2ef8e9fb7b7308-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:266be951-38a9-4500-b09b-ba8f5c96d5f2, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:0 X-CID-META: VersionHash:b14ad71, CLOUDID:37aeb248-4c92-421c-ad91-b806c0f58b2a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 3bb30c15473d4dbaaa2ef8e9fb7b7308-20220616 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2035571304; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:27 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 10/11] scsi: ufs-mediatek: Support multiple VCC sources Date: Thu, 16 Jun 2022 13:37:24 +0800 Message-ID: <20220616053725.5681-11-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Support multiple VCC source in MediaTek UFS platforms. Two options are provided and distinguished by specific device tree attributes as below examples, [Option 1: By numbering] mediatek,ufs-vcc-by-num; vcc-opt1-supply = <&mt6373_vbuck4_ufs>; vcc-opt2-supply = <&mt6363_vemc>; [Option 2: By UFS version] mediatek,ufs-vcc-by-ver; vcc-ufs3-supply = <&mt6373_vbuck4_ufs>; Signed-off-by: Alice Chao Signed-off-by: Peter Wang Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 46 ++++++++++++++++++++++++++++++++- drivers/ufs/host/ufs-mediatek.h | 14 ++++++++++ 2 files changed, 59 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index e756aba45acd..34e51c094366 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -669,6 +669,49 @@ static u32 ufs_mtk_get_ufs_hci_version(struct ufs_hba *hba) return hba->ufs_version; } +#define MAX_VCC_NAME 30 +static int ufs_mtk_vreg_fix_vcc(struct ufs_hba *hba) +{ + struct ufs_vreg_info *info = &hba->vreg_info; + struct device_node *np = hba->dev->of_node; + struct device *dev = hba->dev; + char vcc_name[MAX_VCC_NAME]; + struct arm_smccc_res res; + int err, ver; + + if (hba->vreg_info.vcc) + return 0; + + if (of_property_read_bool(np, "mediatek,ufs-vcc-by-num")) { + ufs_mtk_get_vcc_num(res); + if (res.a1 > UFS_VCC_NONE && res.a1 < UFS_VCC_MAX) + snprintf(vcc_name, MAX_VCC_NAME, "vcc-opt%u", res.a1); + else + return -ENODEV; + } else if (of_property_read_bool(np, "mediatek,ufs-vcc-by-ver")) { + ver = (hba->dev_info.wspecversion & 0xF00) >> 8; + snprintf(vcc_name, MAX_VCC_NAME, "vcc-ufs%u", ver); + } else { + return 0; + } + + err = ufshcd_populate_vreg(dev, vcc_name, &info->vcc); + if (err) + return err; + + err = ufshcd_get_vreg(dev, info->vcc); + if (err) + return err; + + err = regulator_enable(info->vcc->reg); + if (!err) { + info->vcc->enabled = true; + dev_info(dev, "%s: %s enabled\n", __func__, vcc_name); + } + + return err; +} + /** * ufs_mtk_init - find other essential mmio bases * @hba: host controller instance @@ -1179,7 +1222,6 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba) else ufs_mtk_setup_ref_clk_wait_us(hba, REFCLK_DEFAULT_WAIT_US); - return 0; } @@ -1197,6 +1239,8 @@ static void ufs_mtk_fixup_dev_quirks(struct ufs_hba *hba) hba->dev_quirks &= ~(UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM | UFS_DEVICE_QUIRK_DELAY_AFTER_LPM); } + + ufs_mtk_vreg_fix_vcc(hba); } static void ufs_mtk_event_notify(struct ufs_hba *hba, diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index 5c6101ac518f..49a2137fb251 100755 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -83,6 +83,7 @@ enum { #define UFS_MTK_SIP_DEVICE_RESET BIT(1) #define UFS_MTK_SIP_CRYPTO_CTRL BIT(2) #define UFS_MTK_SIP_REF_CLK_NOTIFICATION BIT(3) +#define UFS_MTK_SIP_GET_VCC_NUM BIT(6) #define UFS_MTK_SIP_DEVICE_PWR_CTRL BIT(7) /* @@ -144,6 +145,16 @@ struct ufs_mtk_host { u32 ip_ver; }; +/* + * Multi-VCC by Numbering + */ +enum ufs_mtk_vcc_num { + UFS_VCC_NONE = 0, + UFS_VCC_1, + UFS_VCC_2, + UFS_VCC_MAX +}; + /* * SMC call wrapper function */ @@ -183,6 +194,9 @@ static void _ufs_mtk_smc(struct ufs_mtk_smc_arg s) #define ufs_mtk_device_reset_ctrl(high, res) \ ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high) +#define ufs_mtk_get_vcc_num(res) \ + ufs_mtk_smc(UFS_MTK_SIP_GET_VCC_NUM, &(res)) + #define ufs_mtk_device_pwr_ctrl(on, ufs_ver, res) \ ufs_mtk_smc(UFS_MTK_SIP_DEVICE_PWR_CTRL, &(res), on, ufs_ver) From patchwork Thu Jun 16 05:37:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 582734 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 8EEF3C3F2D4 for ; Thu, 16 Jun 2022 05:37:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358733AbiFPFhq (ORCPT ); Thu, 16 Jun 2022 01:37:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57394 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358700AbiFPFhl (ORCPT ); Thu, 16 Jun 2022 01:37:41 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B8CA205E3; Wed, 15 Jun 2022 22:37:37 -0700 (PDT) X-UUID: be1527b3f93c4ad897e44f80291c87b6-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:85a9e3c0-f0cc-4eac-affb-6ba2354a46fd, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:c15b6ff6-e099-41ba-a32c-13b8bfe63214, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: be1527b3f93c4ad897e44f80291c87b6-20220616 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1953433498; Thu, 16 Jun 2022 13:37:29 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 13:37:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:37:27 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 11/11] scsi: ufs-mediatek: Disable unused VCCQx power rails Date: Thu, 16 Jun 2022 13:37:25 +0800 Message-ID: <20220616053725.5681-12-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616053725.5681-1-stanley.chu@mediatek.com> References: <20220616053725.5681-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Some MediaTek UFS platforms support different VCCQx power rails, for example, both 1.2v and 1.8v VCCQx, in a single kernel image. To optimize the system power consumption, provide a way to disable and release the unused power rail during the device probing. Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 34e51c094366..bfe04a4d1dce 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -712,6 +712,29 @@ static int ufs_mtk_vreg_fix_vcc(struct ufs_hba *hba) return err; } +static void ufs_mtk_vreg_fix_vccqx(struct ufs_hba *hba) +{ + struct ufs_vreg_info *info = &hba->vreg_info; + struct ufs_vreg **vreg_on, **vreg_off; + + if (hba->dev_info.wspecversion >= 0x0300) { + vreg_on = &info->vccq; + vreg_off = &info->vccq2; + } else { + vreg_on = &info->vccq2; + vreg_off = &info->vccq; + } + + if (*vreg_on) + (*vreg_on)->always_on = true; + + if (*vreg_off) { + regulator_disable((*vreg_off)->reg); + devm_kfree(hba->dev, (*vreg_off)->name); + devm_kfree(hba->dev, *vreg_off); + } +} + /** * ufs_mtk_init - find other essential mmio bases * @hba: host controller instance @@ -1241,6 +1264,7 @@ static void ufs_mtk_fixup_dev_quirks(struct ufs_hba *hba) } ufs_mtk_vreg_fix_vcc(hba); + ufs_mtk_vreg_fix_vccqx(hba); } static void ufs_mtk_event_notify(struct ufs_hba *hba,