mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Claudiu Beznea <claudiu.beznea@kernel.org>
To: wsa+renesas@sang-engineering.com,
	tommaso.merciai.xr@bp.renesas.com, alexandre.belloni@bootlin.com,
	Frank.Li@nxp.com, p.zabel@pengutronix.de
Cc: claudiu.beznea@kernel.org, claudiu.beznea@tuxon.dev,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Subject: [PATCH 11/17] i3c: renesas: Follow a unified pattern for transfer and command initialization
Date: Fri, 22 May 2026 13:18:09 +0300	[thread overview]
Message-ID: <20260522101815.1722909-12-claudiu.beznea@kernel.org> (raw)
In-Reply-To: <20260522101815.1722909-1-claudiu.beznea@kernel.org>

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Follow a unified pattern for transfer and command initialization across
the driver. This keeps the code cleaner and easier to follow. Also, in
some cases the I3C device was enabled before the transfer data structure
was even allocated.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/i3c/master/renesas-i3c.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c
index de75125eb013..12bf4797a70d 100644
--- a/drivers/i3c/master/renesas-i3c.c
+++ b/drivers/i3c/master/renesas-i3c.c
@@ -648,6 +648,10 @@ static int renesas_i3c_daa(struct i3c_master_controller *m)
 	if (!xfer)
 		return -ENOMEM;
 
+	init_completion(&xfer->comp);
+	cmd = xfer->cmds;
+	cmd->rx_count = 0;
+
 	/* Enable I3C bus. */
 	renesas_i3c_bus_enable(m, true);
 
@@ -669,10 +673,6 @@ static int renesas_i3c_daa(struct i3c_master_controller *m)
 		renesas_writel(i3c->regs, DATBAS(pos), datbas_dvdyad_with_parity(ret));
 	}
 
-	init_completion(&xfer->comp);
-	cmd = xfer->cmds;
-	cmd->rx_count = 0;
-
 	ret = renesas_i3c_get_free_pos(i3c);
 	if (ret < 0)
 		return ret;
@@ -760,13 +760,13 @@ static int renesas_i3c_send_ccc_cmd(struct i3c_master_controller *m,
 	if (!xfer)
 		return -ENOMEM;
 
-	renesas_i3c_bus_enable(m, true);
-
 	init_completion(&xfer->comp);
 	cmd = xfer->cmds;
 	cmd->rnw = ccc->rnw;
 	cmd->cmd0 = 0;
 
+	renesas_i3c_bus_enable(m, true);
+
 	/* Calculate the command descriptor. */
 	switch (ccc->id) {
 	case I3C_CCC_SETDASA:
@@ -816,15 +816,15 @@ static int renesas_i3c_i3c_xfers(struct i3c_dev_desc *dev, struct i3c_xfer *i3c_
 	struct renesas_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev);
 	int i;
 
-	/* Enable I3C bus. */
-	renesas_i3c_bus_enable(m, true);
-
 	struct renesas_i3c_xfer *xfer __free(kfree) = renesas_i3c_alloc_xfer(i3c, 1);
 	if (!xfer)
 		return -ENOMEM;
 
 	init_completion(&xfer->comp);
 
+	/* Enable I3C bus. */
+	renesas_i3c_bus_enable(m, true);
+
 	for (i = 0; i < i3c_nxfers; i++) {
 		struct renesas_i3c_cmd *cmd = xfer->cmds;
 
@@ -947,12 +947,12 @@ static int renesas_i3c_i2c_xfers(struct i2c_dev_desc *dev,
 	if (!xfer)
 		return -ENOMEM;
 
-	renesas_i3c_bus_enable(m, false);
-
 	init_completion(&xfer->comp);
 	xfer->is_i2c_xfer = true;
 	cmd = xfer->cmds;
 
+	renesas_i3c_bus_enable(m, false);
+
 	if (!(renesas_readl(i3c->regs, BCST) & BCST_BFREF)) {
 		cmd->err = -EBUSY;
 		return cmd->err;
-- 
2.43.0


  parent reply	other threads:[~2026-05-22 10:18 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-22 10:17 [PATCH 00/17] i3c: renesas: Suspend to RAM with power loss and runtime PM Claudiu Beznea
2026-05-22 10:17 ` [PATCH 01/17] i3c: renesas: Check that the transfer is valid before accessing it Claudiu Beznea
2026-05-22 19:02   ` Frank Li
2026-05-22 10:18 ` [PATCH 02/17] i3c: renesas: Use the divider 128 Claudiu Beznea
2026-05-22 19:06   ` Frank Li
2026-05-23  8:14     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 03/17] i3c: renesas: Restore STDBR and EXTBR registers on resume Claudiu Beznea
2026-05-22 19:10   ` Frank Li
2026-05-28  8:29     ` Claudiu Beznea
2026-05-28 19:13       ` Frank Li
2026-05-22 10:18 ` [PATCH 04/17] i3c: renesas: Follow the reset deassert order used in probe Claudiu Beznea
2026-05-22 19:11   ` Frank Li
2026-05-22 10:18 ` [PATCH 05/17] i3c: renesas: Fix re-attach Claudiu Beznea
2026-05-22 19:13   ` Frank Li
2026-05-22 10:18 ` [PATCH 06/17] i3c: renesas: Reset the controller on resume Claudiu Beznea
2026-05-22 19:15   ` Frank Li
2026-05-23 10:24     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 07/17] i3c: renesas: Perform Dynamic Address Assignment " Claudiu Beznea
2026-05-22 19:16   ` Frank Li
2026-05-23 10:26     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 08/17] i3c: renesas: Clean DATBAS register on detach Claudiu Beznea
2026-05-22 19:17   ` Frank Li
2026-05-22 10:18 ` [PATCH 09/17] i3c: renesas: Use reset_control_bulk_{assert, deassert}() Claudiu Beznea
2026-05-22 19:19   ` Frank Li
2026-05-23 10:26     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 10/17] i3c: renesas: Return immediately if there is nothing to transfer Claudiu Beznea
2026-05-22 19:20   ` Frank Li
2026-05-22 10:18 ` Claudiu Beznea [this message]
2026-05-22 19:21   ` [PATCH 11/17] i3c: renesas: Follow a unified pattern for transfer and command initialization Frank Li
2026-05-22 10:18 ` [PATCH 12/17] i3c: renesas: Drop the explicit memset() call Claudiu Beznea
2026-05-22 19:43   ` Frank Li
2026-05-22 10:18 ` [PATCH 13/17] i3c: renesas: Update HW registers after SW computations are done Claudiu Beznea
2026-05-22 19:48   ` Frank Li
2026-05-22 10:18 ` [PATCH 14/17] i3c: renesas: Organize structures to avoid unnecessary padding Claudiu Beznea
2026-05-22 19:50   ` Frank Li
2026-05-22 10:18 ` [PATCH 15/17] i3c: renesas: Use the "dev_name:irq_name" format for the interrupt name Claudiu Beznea
2026-05-22 19:51   ` Frank Li
2026-05-22 10:18 ` [PATCH 16/17] i3c: renesas: Drop unnecessary tab Claudiu Beznea
2026-05-22 19:52   ` Frank Li
2026-05-22 10:18 ` [PATCH 17/17] i3c: renesas: Add runtime PM support Claudiu Beznea
2026-05-22 20:01   ` Frank Li
2026-05-23 10:23     ` Claudiu Beznea
2026-06-02 11:49       ` Claudiu Beznea

Reply instructions:

You may reply publicly 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=20260522101815.1722909-12-claudiu.beznea@kernel.org \
    --to=claudiu.beznea@kernel.org \
    --cc=Frank.Li@nxp.com \
    --cc=alexandre.belloni@bootlin.com \
    --cc=claudiu.beznea.uj@bp.renesas.com \
    --cc=claudiu.beznea@tuxon.dev \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-renesas-soc@vger.kernel.org \
    --cc=p.zabel@pengutronix.de \
    --cc=tommaso.merciai.xr@bp.renesas.com \
    --cc=wsa+renesas@sang-engineering.com \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®