linux-kernel - [PATCH 5.2 130/143] mmc: sdhci-sprd: Implement the get_max_timeout

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Message-Id: <20190904175319.491925858@linuxfoundation.org>
Date:   Wed,  4 Sep 2019 19:54:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Baolin Wang <baolin.wang@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.2 130/143] mmc: sdhci-sprd: Implement the get_max_timeout_count() interface

[ Upstream commit 7486831d7d6aebcf851f9a4bbe65080351d5c9fb ]

Implement the get_max_timeout_count() interface to set the Spredtrum SD
host controller actual maximum timeout count.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mmc/host/sdhci-sprd.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 9d0f58a665276..1c5e6b77ca641 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -285,6 +285,12 @@ static void sdhci_sprd_hw_reset(struct sdhci_host *host)
 	usleep_range(300, 500);
 }
 
+static unsigned int sdhci_sprd_get_max_timeout_count(struct sdhci_host *host)
+{
+	/* The Spredtrum controller actual maximum timeout count is 1 << 31 */
+	return 1 << 31;
+}
+
 static struct sdhci_ops sdhci_sprd_ops = {
 	.read_l = sdhci_sprd_readl,
 	.write_l = sdhci_sprd_writel,
@@ -296,6 +302,7 @@ static struct sdhci_ops sdhci_sprd_ops = {
 	.reset = sdhci_reset,
 	.set_uhs_signaling = sdhci_sprd_set_uhs_signaling,
 	.hw_reset = sdhci_sprd_hw_reset,
+	.get_max_timeout_count = sdhci_sprd_get_max_timeout_count,
 };
 
 static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
-- 
2.20.1