linux-kernel - [PATCH v1 4/6] dmaengine: dw-edma: Move HDMA_V0_MAX_NR

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Date: Fri, 19 Jan 2024 18:30:20 +0530
From: Mrinmay Sarkar <quic_msarkar@...cinc.com>
To: vkoul@...nel.org, jingoohan1@...il.com, conor+dt@...nel.org,
        konrad.dybcio@...aro.org, manivannan.sadhasivam@...aro.org,
        robh+dt@...nel.org
Cc: quic_shazhuss@...cinc.com, quic_nitegupt@...cinc.com,
        quic_ramkri@...cinc.com, quic_nayiluri@...cinc.com,
        dmitry.baryshkov@...aro.org, quic_krichai@...cinc.com,
        quic_vbadigan@...cinc.com, quic_parass@...cinc.com,
        quic_schintav@...cinc.com, quic_shijjose@...cinc.com,
        Mrinmay Sarkar <quic_msarkar@...cinc.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon Vijay Abraham I <kishon@...nel.org>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, mhi@...ts.linux.dev
Subject: [PATCH v1 4/6] dmaengine: dw-edma: Move HDMA_V0_MAX_NR_CH definition to edma.h

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

To maintain uniformity with eDMA, let's move the HDMA max channel
definition to edma.h. While at it, let's also rename it to HDMA_MAX_NR_CH.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
---
 drivers/dma/dw-edma/dw-hdma-v0-core.c | 4 ++--
 drivers/dma/dw-edma/dw-hdma-v0-regs.h | 3 +--
 include/linux/dma/edma.h              | 1 +
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-hdma-v0-core.c b/drivers/dma/dw-edma/dw-hdma-v0-core.c
index 1f4cb7d..819ef1f 100644
--- a/drivers/dma/dw-edma/dw-hdma-v0-core.c
+++ b/drivers/dma/dw-edma/dw-hdma-v0-core.c
@@ -54,7 +54,7 @@ static void dw_hdma_v0_core_off(struct dw_edma *dw)
 {
 	int id;
 
-	for (id = 0; id < HDMA_V0_MAX_NR_CH; id++) {
+	for (id = 0; id < HDMA_MAX_NR_CH; id++) {
 		SET_BOTH_CH_32(dw, id, int_setup,
 			       HDMA_V0_STOP_INT_MASK | HDMA_V0_ABORT_INT_MASK);
 		SET_BOTH_CH_32(dw, id, int_clear,
@@ -70,7 +70,7 @@ static u16 dw_hdma_v0_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir)
 	 * available, we set it to maximum channels and let the platform
 	 * set the right number of channels.
 	 */
-	return HDMA_V0_MAX_NR_CH;
+	return HDMA_MAX_NR_CH;
 }
 
 static enum dma_status dw_hdma_v0_core_ch_status(struct dw_edma_chan *chan)
diff --git a/drivers/dma/dw-edma/dw-hdma-v0-regs.h b/drivers/dma/dw-edma/dw-hdma-v0-regs.h
index a974abd..cd7eab2 100644
--- a/drivers/dma/dw-edma/dw-hdma-v0-regs.h
+++ b/drivers/dma/dw-edma/dw-hdma-v0-regs.h
@@ -11,7 +11,6 @@
 
 #include <linux/dmaengine.h>
 
-#define HDMA_V0_MAX_NR_CH			8
 #define HDMA_V0_LOCAL_ABORT_INT_EN		BIT(6)
 #define HDMA_V0_REMOTE_ABORT_INT_EN		BIT(5)
 #define HDMA_V0_LOCAL_STOP_INT_EN		BIT(4)
@@ -92,7 +91,7 @@ struct dw_hdma_v0_ch {
 } __packed;
 
 struct dw_hdma_v0_regs {
-	struct dw_hdma_v0_ch ch[HDMA_V0_MAX_NR_CH];	/* 0x0000..0x0fa8 */
+	struct dw_hdma_v0_ch ch[HDMA_MAX_NR_CH];	/* 0x0000..0x0fa8 */
 } __packed;
 
 struct dw_hdma_v0_lli {
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index 550f6a4..2cdf249a 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -14,6 +14,7 @@
 
 #define EDMA_MAX_WR_CH                                  8
 #define EDMA_MAX_RD_CH                                  8
+#define HDMA_MAX_NR_CH					8
 
 struct dw_edma;
 struct dw_edma_chip;
-- 
2.7.4