[PATCH v8 3/9] dmaengine: dw-edma: Change rg_region to reg_base in struct dw_edma_chip

[Frank Li <Frank.Li@xxxxxxx>]

struct dw_edma_region rg_region included virtual address, physical
address and size informaiton. But only virtual address is used by EDMA
driver. Change it to void __iomem *reg_base to clean up code.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Reviewed-by: Serge Semin <fancer.lancer@xxxxxxxxx>
---
Change from v6 to v8:
 - none
Change from v5 to v6:
 -s/change/Change at subject
New patch at v4


 drivers/dma/dw-edma/dw-edma-pcie.c       | 6 +++---
 drivers/dma/dw-edma/dw-edma-v0-core.c    | 2 +-
 drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 2 +-
 include/linux/dma/edma.h                 | 3 ++-
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 2c1c5fa4e9f28..ae42bad24dd5a 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -233,8 +233,8 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
 	chip->wr_ch_cnt = vsec_data.wr_ch_cnt;
 	chip->rd_ch_cnt = vsec_data.rd_ch_cnt;
 
-	chip->rg_region.vaddr = pcim_iomap_table(pdev)[vsec_data.rg.bar];
-	if (!chip->rg_region.vaddr)
+	chip->reg_base = pcim_iomap_table(pdev)[vsec_data.rg.bar];
+	if (!chip->reg_base)
 		return -ENOMEM;
 
 	for (i = 0; i < chip->wr_ch_cnt; i++) {
@@ -299,7 +299,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
 
 	pci_dbg(pdev, "Registers:\tBAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p)\n",
 		vsec_data.rg.bar, vsec_data.rg.off, vsec_data.rg.sz,
-		chip->rg_region.vaddr);
+		chip->reg_base);
 
 
 	for (i = 0; i < chip->wr_ch_cnt; i++) {
diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c
index 6cf6c28ce0cc9..c59e23b9f9fdb 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-core.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-core.c
@@ -25,7 +25,7 @@ enum dw_edma_control {
 
 static inline struct dw_edma_v0_regs __iomem *__dw_regs(struct dw_edma *dw)
 {
-	return dw->chip->rg_region.vaddr;
+	return dw->chip->reg_base;
 }
 
 #define SET_32(dw, name, value)				\
diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
index da88958399a95..f59e7c37feac3 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
@@ -287,7 +287,7 @@ void dw_edma_v0_debugfs_on(struct dw_edma *dw)
 	if (!dw)
 		return;
 
-	regs = dw->chip->rg_region.vaddr;
+	regs = dw->chip->reg_base;
 	if (!regs)
 		return;
 
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index 6fd374cc72c8e..e9ce652b88233 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -39,6 +39,7 @@ enum dw_edma_map_format {
  * @id:			 instance ID
  * @nr_irqs:		 total dma irq number
  * @ops			 DMA channel to IRQ number mapping
+ * @reg_base		 DMA register base address
  * @wr_ch_cnt		 DMA write channel number
  * @rd_ch_cnt		 DMA read channel number
  * @rg_region		 DMA register region
@@ -53,7 +54,7 @@ struct dw_edma_chip {
 	int			nr_irqs;
 	const struct dw_edma_core_ops   *ops;
 
-	struct dw_edma_region	rg_region;
+	void __iomem		*reg_base;
 
 	u16			wr_ch_cnt;
 	u16			rd_ch_cnt;
-- 
2.35.1