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| author | Sinan Kaya | 2016-05-01 06:25:27 +0200 |
|---|---|---|
| committer | Vinod Koul | 2016-05-14 08:24:45 +0200 |
| commit | 570d0176296f0d17c4b5ab206ad4a4bc027b863b (patch) | |
| tree | 1c8d62592e8c332a5de3247d3dfcb65df8a83ff9 /drivers/dma/qcom/hidma.c | |
| parent | dmaengine: qcom_hidma: implement lower level hardware interface (diff) | |
| download | kernel-qcow2-linux-570d0176296f0d17c4b5ab206ad4a4bc027b863b.tar.gz kernel-qcow2-linux-570d0176296f0d17c4b5ab206ad4a4bc027b863b.tar.xz kernel-qcow2-linux-570d0176296f0d17c4b5ab206ad4a4bc027b863b.zip | |
dmaengine: qcom_hidma: add debugfs hooks
Add debugfs hooks for debugging the execution behavior of the DMA
channel. The debugfs hooks get initialized by the probe function and
uninitialized by the remove function.
A stats file is created in debugfs. The stats file will show the
information about each HIDMA channel as well as each asynchronous job
queued and completed at a given time.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/qcom/hidma.c')
| -rw-r--r-- | drivers/dma/qcom/hidma.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c index af5e542f453b..1ad27c28d00c 100644 --- a/drivers/dma/qcom/hidma.c +++ b/drivers/dma/qcom/hidma.c @@ -1,7 +1,7 @@ /* * Qualcomm Technologies HIDMA DMA engine interface * - * Copyright (c) 2015, The Linux Foundation. All rights reserved. + * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -644,6 +644,7 @@ static int hidma_probe(struct platform_device *pdev) dmadev->irq = chirq; tasklet_init(&dmadev->task, hidma_issue_task, (unsigned long)dmadev); + hidma_debug_init(dmadev); dev_info(&pdev->dev, "HI-DMA engine driver registration complete\n"); platform_set_drvdata(pdev, dmadev); pm_runtime_mark_last_busy(dmadev->ddev.dev); @@ -651,6 +652,7 @@ static int hidma_probe(struct platform_device *pdev) return 0; uninit: + hidma_debug_uninit(dmadev); hidma_ll_uninit(dmadev->lldev); dmafree: if (dmadev) @@ -668,6 +670,7 @@ static int hidma_remove(struct platform_device *pdev) pm_runtime_get_sync(dmadev->ddev.dev); dma_async_device_unregister(&dmadev->ddev); devm_free_irq(dmadev->ddev.dev, dmadev->irq, dmadev->lldev); + hidma_debug_uninit(dmadev); hidma_ll_uninit(dmadev->lldev); hidma_free(dmadev); |