linux-kernel - [PATCH RFC 5/6] spi: geni-qcom: Hint GENI protocol ID to GPI DMA

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Message-Id: <20250730-topic-dma_genise_cookie-v1-5-b505c1238f9f@oss.qualcomm.com>
Date: Wed, 30 Jul 2025 11:33:32 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Vinod Koul <vkoul@...nel.org>, Sven Peter <sven@...nel.org>, 
 Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>, 
 Ludovic Desroches <ludovic.desroches@...rochip.com>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
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 Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>, 
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Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org, 
 asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-mips@...r.kernel.org, 
 imx@...ts.linux.dev, linux-actions@...ts.infradead.org, 
 linux-arm-msm@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, linux-sunxi@...ts.linux.dev, 
 linux-tegra@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-sound@...r.kernel.org, linux-i2c@...r.kernel.org, 
 linux-spi@...r.kernel.org, Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH RFC 5/6] spi: geni-qcom: Hint GENI protocol ID to GPI DMA

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

With the API in place, request the correct protocol ID with the GPI DMA
to avoid having to hardcode this obvious information in the device
tree.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 drivers/spi/spi-geni-qcom.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 768d7482102adec9b7178077724dc3976a2760c8..0ea157ac06e12012e1a36218bf3a4058a9db6048 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -623,14 +623,14 @@ static int spi_geni_grab_gpi_chan(struct spi_geni_master *mas)
 {
 	int ret;
 
-	mas->tx = dma_request_chan(mas->dev, "tx");
+	mas->tx = dma_request_chan_w_data(mas->dev, "tx", (void *)GENI_SE_SPI);
 	if (IS_ERR(mas->tx)) {
 		ret = dev_err_probe(mas->dev, PTR_ERR(mas->tx),
 				    "Failed to get tx DMA ch\n");
 		goto err_tx;
 	}
 
-	mas->rx = dma_request_chan(mas->dev, "rx");
+	mas->rx = dma_request_chan_w_data(mas->dev, "rx", (void *)GENI_SE_SPI);
 	if (IS_ERR(mas->rx)) {
 		ret = dev_err_probe(mas->dev, PTR_ERR(mas->rx),
 				    "Failed to get rx DMA ch\n");

-- 
2.50.1