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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
commit | 50ba0232fd5312410f1b65247e774244f89a628e (patch) | |
tree | fd8f2fc78e9e548af0ff9590276602ee6125be00 /drivers/dma/tegra210-adma.c | |
parent | Releasing progress-linux version 6.7.12-1~progress7.99u1. (diff) | |
download | linux-50ba0232fd5312410f1b65247e774244f89a628e.tar.xz linux-50ba0232fd5312410f1b65247e774244f89a628e.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/dma/tegra210-adma.c')
-rw-r--r-- | drivers/dma/tegra210-adma.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index 7a0586633b..24ad7077c5 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -153,6 +153,7 @@ struct tegra_adma { void __iomem *base_addr; struct clk *ahub_clk; unsigned int nr_channels; + unsigned long *dma_chan_mask; unsigned long rx_requests_reserved; unsigned long tx_requests_reserved; @@ -741,6 +742,10 @@ static int __maybe_unused tegra_adma_runtime_suspend(struct device *dev) for (i = 0; i < tdma->nr_channels; i++) { tdc = &tdma->channels[i]; + /* skip for reserved channels */ + if (!tdc->tdma) + continue; + ch_reg = &tdc->ch_regs; ch_reg->cmd = tdma_ch_read(tdc, ADMA_CH_CMD); /* skip if channel is not active */ @@ -779,6 +784,9 @@ static int __maybe_unused tegra_adma_runtime_resume(struct device *dev) for (i = 0; i < tdma->nr_channels; i++) { tdc = &tdma->channels[i]; + /* skip for reserved channels */ + if (!tdc->tdma) + continue; ch_reg = &tdc->ch_regs; /* skip if channel was not active earlier */ if (!ch_reg->cmd) @@ -867,10 +875,31 @@ static int tegra_adma_probe(struct platform_device *pdev) return PTR_ERR(tdma->ahub_clk); } + tdma->dma_chan_mask = devm_kzalloc(&pdev->dev, + BITS_TO_LONGS(tdma->nr_channels) * sizeof(unsigned long), + GFP_KERNEL); + if (!tdma->dma_chan_mask) + return -ENOMEM; + + /* Enable all channels by default */ + bitmap_fill(tdma->dma_chan_mask, tdma->nr_channels); + + ret = of_property_read_u32_array(pdev->dev.of_node, "dma-channel-mask", + (u32 *)tdma->dma_chan_mask, + BITS_TO_U32(tdma->nr_channels)); + if (ret < 0 && (ret != -EINVAL)) { + dev_err(&pdev->dev, "dma-channel-mask is not complete.\n"); + return ret; + } + INIT_LIST_HEAD(&tdma->dma_dev.channels); for (i = 0; i < tdma->nr_channels; i++) { struct tegra_adma_chan *tdc = &tdma->channels[i]; + /* skip for reserved channels */ + if (!test_bit(i, tdma->dma_chan_mask)) + continue; + tdc->chan_addr = tdma->base_addr + cdata->ch_base_offset + (cdata->ch_reg_size * i); @@ -957,8 +986,10 @@ static void tegra_adma_remove(struct platform_device *pdev) of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&tdma->dma_dev); - for (i = 0; i < tdma->nr_channels; ++i) - irq_dispose_mapping(tdma->channels[i].irq); + for (i = 0; i < tdma->nr_channels; ++i) { + if (tdma->channels[i].irq) + irq_dispose_mapping(tdma->channels[i].irq); + } pm_runtime_disable(&pdev->dev); } |