[PATCH 19/25] dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory

Serge Semin
2022-03-28T16:46:49Z

Since all DW eDMA read and write channels are now installed in a framework
of a single DMA-engine device, we can freely move all the DW eDMA-specific
DebugFS nodes into a ready-to-use DMA-engine DebugFS subdirectory. It's
created during the DMA-device registration and can be found in the
dma_device.dbg_dev_root field.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
drivers/dma/dw-edma/dw-edma-core.c | 3 ---
drivers/dma/dw-edma/dw-edma-core.h | 3 ---
drivers/dma/dw-edma/dw-edma-v0-core.c | 5 -----
drivers/dma/dw-edma/dw-edma-v0-core.h | 1 -
drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 18 ++++--------------
drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 5 -----
6 files changed, 4 insertions(+), 31 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index a391e44da039..bc530f0a2468 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -1045,9 +1045,6 @@ int dw_edma_remove(struct dw_edma_chip *chip)
list_del(&chan->vc.chan.device_node);
}

- /* Turn debugfs off */
- dw_edma_v0_core_debugfs_off(chip);
-
return 0;
}
EXPORT_SYMBOL_GPL(dw_edma_remove);
diff --git a/drivers/dma/dw-edma/dw-edma-core.h b/drivers/dma/dw-edma/dw-edma-core.h
index ec9f84a857d1..980adb079182 100644
--- a/drivers/dma/dw-edma/dw-edma-core.h
+++ b/drivers/dma/dw-edma/dw-edma-core.h
@@ -110,9 +110,6 @@ struct dw_edma {
raw_spinlock_t lock; /* Only for legacy */

struct dw_edma_chip *chip;
-#ifdef CONFIG_DEBUG_FS
- struct dentry *debugfs;
-#endif /* CONFIG_DEBUG_FS */
};

struct dw_edma_sg {
diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c
index 013d9a9cb991..6b303d5a6b2a 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-core.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-core.c
@@ -511,8 +511,3 @@ void dw_edma_v0_core_debugfs_on(struct dw_edma_chip *chip)
{
dw_edma_v0_debugfs_on(chip);
}
-
-void dw_edma_v0_core_debugfs_off(struct dw_edma_chip *chip)
-{
- dw_edma_v0_debugfs_off(chip);
-}
diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.h b/drivers/dma/dw-edma/dw-edma-v0-core.h
index 2afa626b8300..43e01844375a 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-core.h
+++ b/drivers/dma/dw-edma/dw-edma-v0-core.h
@@ -23,6 +23,5 @@ void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first);
int dw_edma_v0_core_device_config(struct dw_edma_chan *chan);
/* eDMA debug fs callbacks */
void dw_edma_v0_core_debugfs_on(struct dw_edma_chip *chip);
-void dw_edma_v0_core_debugfs_off(struct dw_edma_chip *chip);

#endif /* _DW_EDMA_V0_CORE_H */
diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
index 353269a3680b..319a3c790dc4 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
@@ -268,7 +268,7 @@ static void dw_edma_debugfs_regs(struct dw_edma *dw)
struct dentry *regs_dir;
int nr_entries;

- regs_dir = debugfs_create_dir(REGISTERS_STR, dw->debugfs);
+ regs_dir = debugfs_create_dir(REGISTERS_STR, dw->dma.dbg_dev_root);

nr_entries = ARRAY_SIZE(debugfs_regs);
dw_edma_debugfs_create_x32(dw, debugfs_regs, nr_entries, regs_dir);
@@ -284,19 +284,9 @@ void dw_edma_v0_debugfs_on(struct dw_edma_chip *chip)
if (!debugfs_initialized())
return;

- dw->debugfs = debugfs_create_dir(dw->name, NULL);
-
- debugfs_create_u32("mf", 0444, dw->debugfs, &dw->chip->mf);
- debugfs_create_u16("wr_ch_cnt", 0444, dw->debugfs, &dw->wr_ch_cnt);
- debugfs_create_u16("rd_ch_cnt", 0444, dw->debugfs, &dw->rd_ch_cnt);
+ debugfs_create_u32("mf", 0444, dw->dma.dbg_dev_root, &dw->chip->mf);
+ debugfs_create_u16("wr_ch_cnt", 0444, dw->dma.dbg_dev_root, &dw->wr_ch_cnt);
+ debugfs_create_u16("rd_ch_cnt", 0444, dw->dma.dbg_dev_root, &dw->rd_ch_cnt);

dw_edma_debugfs_regs(dw);
}
-
-void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip)
-{
- struct dw_edma *dw = chip->dw;
-
- debugfs_remove_recursive(dw->debugfs);
- dw->debugfs = NULL;
-}
diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.h b/drivers/dma/dw-edma/dw-edma-v0-debugfs.h
index d0ff25a9ea5c..eb11802c2b76 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.h
+++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.h
@@ -13,15 +13,10 @@

#ifdef CONFIG_DEBUG_FS
void dw_edma_v0_debugfs_on(struct dw_edma_chip *chip);
-void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip);
#else
static inline void dw_edma_v0_debugfs_on(struct dw_edma_chip *chip)
{
}
-
-static inline void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip)
-{
-}
#endif /* CONFIG_DEBUG_FS */

#endif /* _DW_EDMA_V0_DEBUG_FS_H */
--
2.35.1