linux-kernel - [PATCH v1 1/2] mmc: cqhci: add new cqhci_host_ops pre_enable() and post

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Date:   Thu, 27 Aug 2020 17:33:02 +0800
From:   Chun-Hung Wu <chun-hung.wu@...iatek.com>
To:     <mirq-linux@...e.qmqm.pl>, Jonathan Hunter <jonathanh@...dia.com>,
        Al Cooper <alcooperx@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        <bcm-kernel-feedback-list@...adcom.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michal Simek <michal.simek@...inx.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Mao Yong <yong.mao@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Pavel Machek <pavel@....cz>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Pan Bian <bianpan2016@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>,
        Mathieu Malaterre <malat@...ian.org>,
        Asutosh Das <asutoshd@...eaurora.org>,
        Ritesh Harjani <riteshh@...eaurora.org>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Kuohong Wang <kuohong.wang@...iatek.com>
CC:     <kernel-team@...roid.com>, <linux-kernel@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <wsd_upstream@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        Chun-Hung Wu <chun-hung.wu@...iatek.com>
Subject: [PATCH v1 1/2] mmc: cqhci: add new cqhci_host_ops pre_enable() and post_disable()

Add pre_enable() and post_disable() for cqhci_host_ops.
Add hook functions before cqhci enable and
after cqhci disable for platforms need them.

Signed-off-by: Chun-Hung Wu <chun-hung.wu@...iatek.com>
---
 drivers/mmc/host/cqhci.c |    6 ++++++
 drivers/mmc/host/cqhci.h |    2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/mmc/host/cqhci.c b/drivers/mmc/host/cqhci.c
index cfa87df..697fe40 100644
--- a/drivers/mmc/host/cqhci.c
+++ b/drivers/mmc/host/cqhci.c
@@ -376,6 +376,9 @@ static void cqhci_off(struct mmc_host *mmc)
 	else
 		pr_debug("%s: cqhci: CQE off\n", mmc_hostname(mmc));
 
+	if (cq_host->ops->post_disable)
+		cq_host->ops->post_disable(mmc);
+
 	mmc->cqe_on = false;
 }
 
@@ -580,6 +583,9 @@ static int cqhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		__cqhci_enable(cq_host);
 
 	if (!mmc->cqe_on) {
+		if (cq_host->ops->pre_enable)
+			cq_host->ops->pre_enable(mmc);
+
 		cqhci_writel(cq_host, 0, CQHCI_CTL);
 		mmc->cqe_on = true;
 		pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc));
diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h
index 4377001..89bf6ad 100644
--- a/drivers/mmc/host/cqhci.h
+++ b/drivers/mmc/host/cqhci.h
@@ -206,6 +206,8 @@ struct cqhci_host_ops {
 	void (*disable)(struct mmc_host *mmc, bool recovery);
 	void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq,
 				 u64 *data);
+	void (*pre_enable)(struct mmc_host *mmc);
+	void (*post_disable)(struct mmc_host *mmc);
 };
 
 static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg)
-- 
1.7.9.5