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From: Mrinmay Sarkar <quic_msarkar@quicinc.com>
To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org,
        konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org,
        robh+dt@kernel.org
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        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev
Subject: [PATCH v1 1/6] dmaengine: dw-edma: Pass 'struct dw_edma_chip' to irq_vector()
Date: Fri, 19 Jan 2024 18:30:17 +0530
Message-Id: <1705669223-5655-2-git-send-email-quic_msarkar@quicinc.com>
In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com>
References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com>
Precedence: bulk

From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

eDMA client drivers defining the irq_vector() callback need to access the
members of dw_edma_chip structure. So let's pass that pointer instead.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
---
 drivers/dma/dw-edma/dw-edma-core.c           | 11 +++++------
 drivers/dma/dw-edma/dw-edma-pcie.c           |  4 ++--
 drivers/pci/controller/dwc/pcie-designware.c |  4 ++--
 include/linux/dma/edma.h                     |  3 ++-
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index 6823624..7fe1c19 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -849,7 +849,7 @@ static int dw_edma_irq_request(struct dw_edma *dw,
 
 	if (chip->nr_irqs == 1) {
 		/* Common IRQ shared among all channels */
-		irq = chip->ops->irq_vector(dev, 0);
+		irq = chip->ops->irq_vector(chip, 0);
 		err = request_irq(irq, dw_edma_interrupt_common,
 				  IRQF_SHARED, dw->name, &dw->irq[0]);
 		if (err) {
@@ -874,7 +874,7 @@ static int dw_edma_irq_request(struct dw_edma *dw,
 		dw_edma_add_irq_mask(&rd_mask, *rd_alloc, dw->rd_ch_cnt);
 
 		for (i = 0; i < (*wr_alloc + *rd_alloc); i++) {
-			irq = chip->ops->irq_vector(dev, i);
+			irq = chip->ops->irq_vector(chip, i);
 			err = request_irq(irq,
 					  i < *wr_alloc ?
 						dw_edma_interrupt_write :
@@ -895,7 +895,7 @@ static int dw_edma_irq_request(struct dw_edma *dw,
 
 err_irq_free:
 	for  (i--; i >= 0; i--) {
-		irq = chip->ops->irq_vector(dev, i);
+		irq = chip->ops->irq_vector(chip, i);
 		free_irq(irq, &dw->irq[i]);
 	}
 
@@ -975,7 +975,7 @@ int dw_edma_probe(struct dw_edma_chip *chip)
 
 err_irq_free:
 	for (i = (dw->nr_irqs - 1); i >= 0; i--)
-		free_irq(chip->ops->irq_vector(dev, i), &dw->irq[i]);
+		free_irq(chip->ops->irq_vector(chip, i), &dw->irq[i]);
 
 	return err;
 }
@@ -984,7 +984,6 @@ EXPORT_SYMBOL_GPL(dw_edma_probe);
 int dw_edma_remove(struct dw_edma_chip *chip)
 {
 	struct dw_edma_chan *chan, *_chan;
-	struct device *dev = chip->dev;
 	struct dw_edma *dw = chip->dw;
 	int i;
 
@@ -997,7 +996,7 @@ int dw_edma_remove(struct dw_edma_chip *chip)
 
 	/* Free irqs */
 	for (i = (dw->nr_irqs - 1); i >= 0; i--)
-		free_irq(chip->ops->irq_vector(dev, i), &dw->irq[i]);
+		free_irq(chip->ops->irq_vector(chip, i), &dw->irq[i]);
 
 	/* Deregister eDMA device */
 	dma_async_device_unregister(&dw->dma);
diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 1c60437..2b13725 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -90,9 +90,9 @@ static const struct dw_edma_pcie_data snps_edda_data = {
 	.rd_ch_cnt			= 2,
 };
 
-static int dw_edma_pcie_irq_vector(struct device *dev, unsigned int nr)
+static int dw_edma_pcie_irq_vector(struct dw_edma_chip *chip, unsigned int nr)
 {
-	return pci_irq_vector(to_pci_dev(dev), nr);
+	return pci_irq_vector(to_pci_dev(chip->dev), nr);
 }
 
 static u64 dw_edma_pcie_address(struct device *dev, phys_addr_t cpu_addr)
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 250cf7f..eca047a 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -858,9 +858,9 @@ static u32 dw_pcie_readl_dma(struct dw_pcie *pci, u32 reg)
 	return val;
 }
 
-static int dw_pcie_edma_irq_vector(struct device *dev, unsigned int nr)
+static int dw_pcie_edma_irq_vector(struct dw_edma_chip *edma, unsigned int nr)
 {
-	struct platform_device *pdev = to_platform_device(dev);
+	struct platform_device *pdev = to_platform_device(edma->dev);
 	char name[6];
 	int ret;
 
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index 3080747..7197a58 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -16,6 +16,7 @@
 #define EDMA_MAX_RD_CH                                  8
 
 struct dw_edma;
+struct dw_edma_chip;
 
 struct dw_edma_region {
 	u64		paddr;
@@ -41,7 +42,7 @@ struct dw_edma_region {
  *			automatically.
  */
 struct dw_edma_plat_ops {
-	int (*irq_vector)(struct device *dev, unsigned int nr);
+	int (*irq_vector)(struct dw_edma_chip *chip, unsigned int nr);
 	u64 (*pci_address)(struct device *dev, phys_addr_t cpu_addr);
 };
 
-- 
2.7.4