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authorBen Dooks <ben.dooks@codethink.co.uk>2018-11-21 19:13:23 +0300
committerVinod Koul <vkoul@kernel.org>2019-01-07 07:22:42 +0300
commit95f295f9fe08166307d94b641fba0b0e924d5d31 (patch)
treeff0f3610c5748817710fcf26d278739e70112db4 /drivers/dma/tegra20-apb-dma.c
parent65c383c78000f73a96869505554f57c364308204 (diff)
downloadlinux-95f295f9fe08166307d94b641fba0b0e924d5d31.tar.xz
dmaengine: tegra: add tracepoints to driver
Add some trace-points to the driver to allow for debuging via the trace pipe. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/tegra20-apb-dma.c')
-rw-r--r--drivers/dma/tegra20-apb-dma.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index c60c3f7cad5f..659b49bf6fdb 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -38,6 +38,9 @@
#include "dmaengine.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/tegra_apb_dma.h>
+
#define TEGRA_APBDMA_GENERAL 0x0
#define TEGRA_APBDMA_GENERAL_ENABLE BIT(31)
@@ -672,6 +675,8 @@ static void tegra_dma_tasklet(unsigned long data)
dmaengine_desc_get_callback(&dma_desc->txd, &cb);
cb_count = dma_desc->cb_count;
dma_desc->cb_count = 0;
+ trace_tegra_dma_complete_cb(&tdc->dma_chan, cb_count,
+ cb.callback);
spin_unlock_irqrestore(&tdc->lock, flags);
while (cb_count--)
dmaengine_desc_callback_invoke(&cb, NULL);
@@ -688,6 +693,7 @@ static irqreturn_t tegra_dma_isr(int irq, void *dev_id)
spin_lock_irqsave(&tdc->lock, flags);
+ trace_tegra_dma_isr(&tdc->dma_chan, irq);
status = tdc_read(tdc, TEGRA_APBDMA_CHAN_STATUS);
if (status & TEGRA_APBDMA_STATUS_ISE_EOC) {
tdc_write(tdc, TEGRA_APBDMA_CHAN_STATUS, status);
@@ -846,6 +852,7 @@ found:
dma_set_residue(txstate, residual);
}
+ trace_tegra_dma_tx_status(&tdc->dma_chan, cookie, txstate);
spin_unlock_irqrestore(&tdc->lock, flags);
return ret;
}