linux-kernel - [PATCH 6/8] dmaengine: mediatek: mtk-uart-apdma: Rename support_33bits to support_ext

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Message-ID: <20251113122229.23998-7-angelogioacchino.delregno@collabora.com>
Date: Thu, 13 Nov 2025 13:22:27 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: dmaengine@...r.kernel.org
Cc: sean.wang@...iatek.com,
	vkoul@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	long.cheng@...iatek.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	kernel@...labora.com
Subject: [PATCH 6/8] dmaengine: mediatek: mtk-uart-apdma: Rename support_33bits to support_ext_addr

In preparation for adding support for SoCs with APDMA IP versions
supporting more than 33 bits addressing, rename the support_33bits
variable to support_ext_addr to signal support for extended, above
4GB, addressing.

This change is cosmetic only, and brings no functional differences.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/dma/mediatek/mtk-uart-apdma.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c
index 2398b440b12a..802a4d6c11fa 100644
--- a/drivers/dma/mediatek/mtk-uart-apdma.c
+++ b/drivers/dma/mediatek/mtk-uart-apdma.c
@@ -77,7 +77,7 @@
 struct mtk_uart_apdmadev {
 	struct dma_device ddev;
 	struct clk *clk;
-	bool support_33bits;
+	bool support_ext_addr;
 	unsigned int dma_requests;
 };
 
@@ -148,7 +148,7 @@ static void mtk_uart_apdma_start_tx(struct mtk_chan *c)
 		mtk_uart_apdma_write(c, VFF_WPT, 0);
 		mtk_uart_apdma_write(c, VFF_INT_FLAG, VFF_TX_INT_CLR_B);
 
-		if (mtkd->support_33bits)
+		if (mtkd->support_ext_addr)
 			mtk_uart_apdma_write(c, VFF_ADDR2, upper_32_bits(d->addr));
 	}
 
@@ -191,7 +191,7 @@ static void mtk_uart_apdma_start_rx(struct mtk_chan *c)
 		mtk_uart_apdma_write(c, VFF_RPT, 0);
 		mtk_uart_apdma_write(c, VFF_INT_FLAG, VFF_RX_INT_CLR_B);
 
-		if (mtkd->support_33bits)
+		if (mtkd->support_ext_addr)
 			mtk_uart_apdma_write(c, VFF_ADDR2, upper_32_bits(d->addr));
 	}
 
@@ -297,7 +297,7 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
 		goto err_pm;
 	}
 
-	if (mtkd->support_33bits)
+	if (mtkd->support_ext_addr)
 		mtk_uart_apdma_write(c, VFF_ADDR2, VFF_ADDR2_CLR_B);
 
 err_pm:
@@ -495,7 +495,7 @@ static int mtk_uart_apdma_probe(struct platform_device *pdev)
 
 	bit_mask = (unsigned int)(uintptr_t)of_device_get_match_data(&pdev->dev);
 	if (bit_mask > 32)
-		mtkd->support_33bits = true;
+		mtkd->support_ext_addr = true;
 
 	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(bit_mask));
 	if (rc)
-- 
2.51.1