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From: Jorge Marques <jorge.marques@analog.com>
To: "Alexandre Belloni" <alexandre.belloni@bootlin.com>,
	"Frank Li" <Frank.Li@nxp.com>,
	"Przemysław Gaj" <pgaj@cadence.com>
Cc: <linux-i3c@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	Jorge Marques <jorge.marques@analog.com>
Subject: [PATCH v2 3/3] i3c: master: dw: Use i3c_master_writesl() and i3c_master_readsl()
Date: Sun, 22 Jun 2025 11:19:00 +0200	[thread overview]
Message-ID: <20250622-i3c-writesl-readsl-v2-3-2afd34ec6306@analog.com> (raw)
In-Reply-To: <20250622-i3c-writesl-readsl-v2-0-2afd34ec6306@analog.com>

Use common inline i3c_master_writesl()/i3c_master_readsl() methods to
simplify code since the FIFO of controller is a 32bit width.

Signed-off-by: Jorge Marques <jorge.marques@analog.com>
---
 drivers/i3c/master/dw-i3c-master.c | 25 ++++---------------------
 1 file changed, 4 insertions(+), 21 deletions(-)

diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 611c22b72c1572ddf717c8ad473e44a3b8fcceaf..886f8b74defda31ae93248467d144f9c8c561581 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -23,6 +23,7 @@
 #include <linux/reset.h>
 #include <linux/slab.h>
 
+#include "../internals.h"
 #include "dw-i3c-master.h"
 
 #define DEVICE_CTRL			0x0
@@ -336,37 +337,19 @@ static int dw_i3c_master_get_free_pos(struct dw_i3c_master *master)
 static void dw_i3c_master_wr_tx_fifo(struct dw_i3c_master *master,
 				     const u8 *bytes, int nbytes)
 {
-	writesl(master->regs + RX_TX_DATA_PORT, bytes, nbytes / 4);
-	if (nbytes & 3) {
-		u32 tmp = 0;
-
-		memcpy(&tmp, bytes + (nbytes & ~3), nbytes & 3);
-		writesl(master->regs + RX_TX_DATA_PORT, &tmp, 1);
-	}
-}
-
-static void dw_i3c_master_read_fifo(struct dw_i3c_master *master,
-				    int reg,  u8 *bytes, int nbytes)
-{
-	readsl(master->regs + reg, bytes, nbytes / 4);
-	if (nbytes & 3) {
-		u32 tmp;
-
-		readsl(master->regs + reg, &tmp, 1);
-		memcpy(bytes + (nbytes & ~3), &tmp, nbytes & 3);
-	}
+	i3c_writel_fifo(master->regs + RX_TX_DATA_PORT, bytes, nbytes);
 }
 
 static void dw_i3c_master_read_rx_fifo(struct dw_i3c_master *master,
 				       u8 *bytes, int nbytes)
 {
-	return dw_i3c_master_read_fifo(master, RX_TX_DATA_PORT, bytes, nbytes);
+	i3c_readl_fifo(master->regs + RX_TX_DATA_PORT, bytes, nbytes);
 }
 
 static void dw_i3c_master_read_ibi_fifo(struct dw_i3c_master *master,
 					u8 *bytes, int nbytes)
 {
-	return dw_i3c_master_read_fifo(master, IBI_QUEUE_STATUS, bytes, nbytes);
+	i3c_readl_fifo(master->regs + IBI_QUEUE_STATUS, bytes, nbytes);
 }
 
 static struct dw_i3c_xfer *

-- 
2.49.0



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      parent reply	other threads:[~2025-06-22  9:22 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-22  9:18 [PATCH v2 0/3] Add helper methods i3c_writel_fifo() and i3c_readl_fifo() Jorge Marques
2025-06-22  9:18 ` [PATCH v2 1/3] i3c: master: Add inline i3c_readl_fifo() and i3c_writel_fifo() Jorge Marques
2025-06-23 15:43   ` Frank Li
2025-06-24  8:50     ` Jorge Marques
2025-06-23 19:53   ` Wolfram Sang
2025-06-22  9:18 ` [PATCH v2 2/3] i3c: master: cdns: Use i3c_master_writesl() and i3c_master_readsl() Jorge Marques
2025-06-23 15:45   ` Frank Li
2025-06-24  8:55     ` Jorge Marques
2025-06-22  9:19 ` Jorge Marques [this message]

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