Linux-mmc Archive on lore.kernel.org
 help / color / Atom feed
From: Faiz Abbas <faiz_abbas@ti.com>
To: <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-mmc@vger.kernel.org>
Cc: <adrian.hunter@intel.com>, <kishon@ti.com>,
	<mark.rutland@arm.com>, <robh+dt@kernel.org>,
	<ulf.hansson@linaro.org>, <faiz_abbas@ti.com>, <tony@atomide.com>
Subject: [PATCH v5 02/10] mmc: sdhci: Factor out some operations set to their own functions
Date: Thu, 16 Jan 2020 16:21:46 +0530
Message-ID: <20200116105154.7685-3-faiz_abbas@ti.com> (raw)
In-Reply-To: <20200116105154.7685-1-faiz_abbas@ti.com>

In preparation for adding external dma support, factor out data initialization,
block info and mrq_done to their own functions.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Tested-by: Baolin Wang <baolin.wang7@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
---
 drivers/mmc/host/sdhci.c | 94 ++++++++++++++++++++++------------------
 1 file changed, 53 insertions(+), 41 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1b1c26da3fe0..53cd5d0c4290 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1025,18 +1025,9 @@ static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
 	}
 }
 
-static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
+static void sdhci_initialize_data(struct sdhci_host *host,
+				  struct mmc_data *data)
 {
-	struct mmc_data *data = cmd->data;
-
-	host->data_timeout = 0;
-
-	if (sdhci_data_line_cmd(cmd))
-		sdhci_set_timeout(host, cmd);
-
-	if (!data)
-		return;
-
 	WARN_ON(host->data);
 
 	/* Sanity checks */
@@ -1047,6 +1038,34 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
 	host->data = data;
 	host->data_early = 0;
 	host->data->bytes_xfered = 0;
+}
+
+static inline void sdhci_set_block_info(struct sdhci_host *host,
+					struct mmc_data *data)
+{
+	/* Set the DMA boundary value and block size */
+	sdhci_writew(host,
+		     SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),
+		     SDHCI_BLOCK_SIZE);
+	/*
+	 * For Version 4.10 onwards, if v4 mode is enabled, 32-bit Block Count
+	 * can be supported, in that case 16-bit block count register must be 0.
+	 */
+	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&
+	    (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {
+		if (sdhci_readw(host, SDHCI_BLOCK_COUNT))
+			sdhci_writew(host, 0, SDHCI_BLOCK_COUNT);
+		sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);
+	} else {
+		sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
+	}
+}
+
+static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
+{
+	struct mmc_data *data = cmd->data;
+
+	sdhci_initialize_data(host, data);
 
 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
 		struct scatterlist *sg;
@@ -1133,22 +1152,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
 
 	sdhci_set_transfer_irqs(host);
 
-	/* Set the DMA boundary value and block size */
-	sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),
-		     SDHCI_BLOCK_SIZE);
-
-	/*
-	 * For Version 4.10 onwards, if v4 mode is enabled, 32-bit Block Count
-	 * can be supported, in that case 16-bit block count register must be 0.
-	 */
-	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&
-	    (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {
-		if (sdhci_readw(host, SDHCI_BLOCK_COUNT))
-			sdhci_writew(host, 0, SDHCI_BLOCK_COUNT);
-		sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);
-	} else {
-		sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
-	}
+	sdhci_set_block_info(host, data);
 }
 
 static inline bool sdhci_auto_cmd12(struct sdhci_host *host,
@@ -1245,22 +1249,10 @@ static bool sdhci_needs_reset(struct sdhci_host *host, struct mmc_request *mrq)
 		 (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)));
 }
 
-static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
+static void sdhci_set_mrq_done(struct sdhci_host *host, struct mmc_request *mrq)
 {
 	int i;
 
-	if (host->cmd && host->cmd->mrq == mrq)
-		host->cmd = NULL;
-
-	if (host->data_cmd && host->data_cmd->mrq == mrq)
-		host->data_cmd = NULL;
-
-	if (host->data && host->data->mrq == mrq)
-		host->data = NULL;
-
-	if (sdhci_needs_reset(host, mrq))
-		host->pending_reset = true;
-
 	for (i = 0; i < SDHCI_MAX_MRQS; i++) {
 		if (host->mrqs_done[i] == mrq) {
 			WARN_ON(1);
@@ -1276,6 +1268,23 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
 	}
 
 	WARN_ON(i >= SDHCI_MAX_MRQS);
+}
+
+static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
+{
+	if (host->cmd && host->cmd->mrq == mrq)
+		host->cmd = NULL;
+
+	if (host->data_cmd && host->data_cmd->mrq == mrq)
+		host->data_cmd = NULL;
+
+	if (host->data && host->data->mrq == mrq)
+		host->data = NULL;
+
+	if (sdhci_needs_reset(host, mrq))
+		host->pending_reset = true;
+
+	sdhci_set_mrq_done(host, mrq);
 
 	sdhci_del_timer(host, mrq);
 
@@ -1390,12 +1399,15 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 	}
 
 	host->cmd = cmd;
+	host->data_timeout = 0;
 	if (sdhci_data_line_cmd(cmd)) {
 		WARN_ON(host->data_cmd);
 		host->data_cmd = cmd;
+		sdhci_set_timeout(host, cmd);
 	}
 
-	sdhci_prepare_data(host, cmd);
+	if (cmd->data)
+		sdhci_prepare_data(host, cmd);
 
 	sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
 
-- 
2.19.2


  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16 10:51 [PATCH v5 00/10] Port am335x and am437x devices to sdhci-omap Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 01/10] dt-bindings: sdhci-omap: Add properties for using external dma Faiz Abbas
2020-01-16 10:51 ` Faiz Abbas [this message]
2020-01-16 10:51 ` [PATCH v5 03/10] mmc: sdhci: add support for using external DMA devices Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 04/10] mmc: sdhci-omap: Add using external dma Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 05/10] mmc: sdhci: Convert sdhci_set_timeout_irq() to non-static Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 06/10] mmc: sdhci: Refactor sdhci_set_timeout() Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 07/10] mmc: sdhci-omap: Disable data timeout interrupt during erase Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 08/10] dt-bindings: sdhci-omap: Add am335x and am437x specific bindings Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 09/10] mmc: sdhci-omap: Add am335x and am437x specific compatibles Faiz Abbas
2020-01-16 10:51 ` [PATCH v5 10/10] mmc: sdhci-omap: Add special reset capability Faiz Abbas
2020-01-16 15:37 ` [PATCH v5 00/10] Port am335x and am437x devices to sdhci-omap Ulf Hansson

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200116105154.7685-3-faiz_abbas@ti.com \
    --to=faiz_abbas@ti.com \
    --cc=adrian.hunter@intel.com \
    --cc=devicetree@vger.kernel.org \
    --cc=kishon@ti.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mmc@vger.kernel.org \
    --cc=linux-omap@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=tony@atomide.com \
    --cc=ulf.hansson@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-mmc Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mmc/0 linux-mmc/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-mmc linux-mmc/ https://lore.kernel.org/linux-mmc \
		linux-mmc@vger.kernel.org
	public-inbox-index linux-mmc

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-mmc


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git