netdev - [PATCH 2/6] drivers: net: ethernet: davinci_cpdma: add clear api for statistics interrupt

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Date:	Wed, 17 Oct 2012 04:15:14 +0530
From:	Mugunthan V N <mugunthanvnm@...com>
To:	<netdev@...r.kernel.org>
CC:	<davem@...emloft.net>, Richard Cochran <richardcochran@...il.com>,
	Mugunthan V N <mugunthanvnm@...com>
Subject: [PATCH 2/6] drivers: net: ethernet: davinci_cpdma: add clear api for statistics interrupt

Adding api to clear statistics interrupt which is generated by
CPTS event pend, stat pend, mdio interrupts

Cc: Richard Cochran <richardcochran@...il.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
---
 drivers/net/ethernet/ti/davinci_cpdma.c |    8 ++++++++
 drivers/net/ethernet/ti/davinci_cpdma.h |    1 +
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c
index d15c888..656712c 100644
--- a/drivers/net/ethernet/ti/davinci_cpdma.c
+++ b/drivers/net/ethernet/ti/davinci_cpdma.c
@@ -63,6 +63,8 @@
 
 #define CPDMA_TEARDOWN_VALUE	0xfffffffc
 
+#define CPDMA_STAT_PEND_EOI	0x3
+
 struct cpdma_desc {
 	/* hardware fields */
 	u32			hw_next;
@@ -479,6 +481,12 @@ void cpdma_ctlr_eoi(struct cpdma_ctlr *ctlr)
 	dma_reg_write(ctlr, CPDMA_MACEOIVECTOR, 0);
 }
 
+void cpdma_ctlr_eoi_statistics(struct cpdma_ctlr *ctlr)
+{
+	dma_reg_write(ctlr, CPDMA_MACEOIVECTOR, CPDMA_STAT_PEND_EOI);
+}
+EXPORT_SYMBOL_GPL(cpdma_ctlr_eoi_statistics);
+
 struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num,
 				     cpdma_handler_fn handler)
 {
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.h b/drivers/net/ethernet/ti/davinci_cpdma.h
index afa19a0..e25e9d5 100644
--- a/drivers/net/ethernet/ti/davinci_cpdma.h
+++ b/drivers/net/ethernet/ti/davinci_cpdma.h
@@ -87,6 +87,7 @@ int cpdma_chan_process(struct cpdma_chan *chan, int quota);
 
 int cpdma_ctlr_int_ctrl(struct cpdma_ctlr *ctlr, bool enable);
 void cpdma_ctlr_eoi(struct cpdma_ctlr *ctlr);
+void cpdma_ctlr_eoi_statistics(struct cpdma_ctlr *ctlr);
 int cpdma_chan_int_ctrl(struct cpdma_chan *chan, bool enable);
 
 enum cpdma_control {
-- 
1.7.0.4

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