linux-kernel - [PATCH 5/6] mmc: core: simplify hs200 tuning

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Date:   Tue,  8 Dec 2020 14:18:38 +0800
From:   Chris Ruehl <chris.ruehl@...ys.com.hk>
To:     linux-mmc@...r.kernel.org
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Chris Ruehl <chris.ruehl@...ys.com.hk>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Ludovic Barre <ludovic.barre@...com>,
        Krishna Konda <kkonda@...eaurora.org>,
        linux-kernel@...r.kernel.org, Jack <jack.lo@...ys.com.hk>
Subject: [PATCH 5/6] mmc: core: simplify hs200 tuning

Since the host->ops->prepare_hs400_tuning had been moved to
mmc_select_hs400() the tuning for hs200 can simplify and
the function mmc_hs200_tuning() can be removed.

Signed-off-by: Chris Ruehl <chris.ruehl@...ys.com.hk>
---
 drivers/mmc/core/mmc.c | 22 +---------------------
 1 file changed, 1 insertion(+), 21 deletions(-)

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index f11562b58e89..6ef6029b6948 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1485,26 +1485,6 @@ static int mmc_select_timing(struct mmc_card *card)
 	return 0;
 }
 
-/*
- * Execute tuning sequence to seek the proper bus operating
- * conditions for HS200 and HS400, which sends CMD21 to the device.
- */
-static int mmc_hs200_tuning(struct mmc_card *card)
-{
-	struct mmc_host *host = card->host;
-
-	/*
-	 * Timing should be adjusted to the HS400 target
-	 * operation frequency for tuning process
-	 */
-	if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
-	    host->ios.bus_width == MMC_BUS_WIDTH_8)
-		if (host->ops->prepare_hs400_tuning)
-			host->ops->prepare_hs400_tuning(host, &host->ios);
-
-	return mmc_execute_tuning(card);
-}
-
 /*
  * Handle the detection and initialisation of a card.
  *
@@ -1726,7 +1706,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	if (mmc_card_hs200(card)) {
 		host->doing_init_tune = 1;
 
-		err = mmc_hs200_tuning(card);
+		err = mmc_execute_tuning(card);
 
 		host->doing_init_tune = 0;
 
-- 
2.20.1