linux-kernel - [PATCH 3/3] dmaengine: qcom: gpi: Add support for ee

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Message-Id: <20220406132508.1029348-3-vkoul@kernel.org>
Date:   Wed,  6 Apr 2022 18:55:08 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] dmaengine: qcom: gpi: Add support for ee_offset

Controller on newer SoCs like SM8450 have registers at at offset. Add
ee_offset to driver_data and add this compatible for the driver.

Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/dma/qcom/gpi.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/qcom/gpi.c b/drivers/dma/qcom/gpi.c
index 3429ceccd13b..0b402d923eae 100644
--- a/drivers/dma/qcom/gpi.c
+++ b/drivers/dma/qcom/gpi.c
@@ -2152,6 +2152,7 @@ static int gpi_probe(struct platform_device *pdev)
 {
 	struct gpi_dev *gpi_dev;
 	unsigned int i;
+	u32 ee_offset;
 	int ret;
 
 	gpi_dev = devm_kzalloc(&pdev->dev, sizeof(*gpi_dev), GFP_KERNEL);
@@ -2179,6 +2180,9 @@ static int gpi_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	ee_offset = (uintptr_t)device_get_match_data(gpi_dev->dev);
+	gpi_dev->ee_base = gpi_dev->ee_base - ee_offset;
+
 	gpi_dev->ev_factor = EV_FACTOR;
 
 	ret = dma_set_mask(gpi_dev->dev, DMA_BIT_MASK(64));
@@ -2282,9 +2286,10 @@ static int gpi_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id gpi_of_match[] = {
-	{ .compatible = "qcom,sdm845-gpi-dma" },
-	{ .compatible = "qcom,sm8150-gpi-dma" },
-	{ .compatible = "qcom,sm8250-gpi-dma" },
+	{ .compatible = "qcom,sdm845-gpi-dma", .data = (void *)0x0 },
+	{ .compatible = "qcom,sm8150-gpi-dma", .data = (void *)0x0 },
+	{ .compatible = "qcom,sm8250-gpi-dma", .data = (void *)0x0 },
+	{ .compatible = "qcom,sm8450-gpi-dma", .data = (void *)0x10000 },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, gpi_of_match);
-- 
2.34.1