diff options
| author | Sinan Kaya <okaya@codeaurora.org> | 2017-06-22 20:59:22 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-06-26 04:57:39 +0200 |
| commit | 13058e33040819c1e7da070769a3a0197dc9cdf1 (patch) | |
| tree | d4754d65a82fd471c6dfd19b68e69560a391f451 /drivers/dma/qcom/hidma.c | |
| parent | dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly (diff) | |
| download | linux-13058e33040819c1e7da070769a3a0197dc9cdf1.tar.xz linux-13058e33040819c1e7da070769a3a0197dc9cdf1.zip | |
dmaengine: qcom_hidma: allow ACPI/DT parameters to be overridden
Parameters like maximum read/write request size and the maximum
number of active transactions are currently configured in DT/ACPI.
This patch allows a user to override these to fine tune performance
for their application.
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 | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c index 5072a7d306d4..84e3699a19bd 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) 2015-2016, The Linux Foundation. All rights reserved. + * Copyright (c) 2015-2017, 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 @@ -795,8 +795,11 @@ static int hidma_probe(struct platform_device *pdev) device_property_read_u32(&pdev->dev, "desc-count", &dmadev->nr_descriptors); - if (!dmadev->nr_descriptors && nr_desc_prm) + if (nr_desc_prm) { + dev_info(&pdev->dev, "overriding number of descriptors as %d\n", + nr_desc_prm); dmadev->nr_descriptors = nr_desc_prm; + } if (!dmadev->nr_descriptors) dmadev->nr_descriptors = HIDMA_NR_DEFAULT_DESC; |