search for: fchan

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2016 Aug 26
0
[PATCH v8 05/18] dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support
...t_fdma_chan *to_st_fdma_chan(struct dma_chan *c) +{ + return container_of(c, struct st_fdma_chan, vchan.chan); +} + +static struct st_fdma_desc *to_st_fdma_desc(struct virt_dma_desc *vd) +{ + return container_of(vd, struct st_fdma_desc, vdesc); +} + +static int st_fdma_dreq_get(struct st_fdma_chan *fchan) +{ + struct st_fdma_dev *fdev = fchan->fdev; + u32 req_line_cfg = fchan->cfg.req_line; + u32 dreq_line; + int try = 0; + + /* + * dreq_mask is shared for n channels of fdma, so all accesses must be + * atomic. if the dreq_mask is changed between ffz and set_bit, + * we retry + */ + do {...
2016 Aug 26
32
[PATCH v8 00/18] Add support for FDMA DMA controller and slim core rproc found on STi chipsets
Hi Vinod, Bjorn, Patrice, This patchset adds support for the Flexible Direct Memory Access (FDMA) core found on STi chipsets from STMicroelectronics. The FDMA is a slim core CPU with a dedicated firmware. It is a general purpose DMA controller supporting 16 independent channels and data can be moved from memory to memory or between memory and paced latency critical real time targets. After quite
2016 Aug 26
32
[PATCH v8 00/18] Add support for FDMA DMA controller and slim core rproc found on STi chipsets
Hi Vinod, Bjorn, Patrice, This patchset adds support for the Flexible Direct Memory Access (FDMA) core found on STi chipsets from STMicroelectronics. The FDMA is a slim core CPU with a dedicated firmware. It is a general purpose DMA controller supporting 16 independent channels and data can be moved from memory to memory or between memory and paced latency critical real time targets. After quite
2016 Aug 30
1
[PATCH v8 05/18] dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support
...dev_err(&pdev->dev, "slim_rproc_alloc failed (%d)\n", ret); > + goto err; > + } > + > + /* Initialise list of FDMA channels */ > + INIT_LIST_HEAD(&fdev->dma_device.channels); > + for (i = 0; i < fdev->nr_channels; i++) { > + struct st_fdma_chan *fchan = &fdev->chans[i]; > + > + fchan->fdev = fdev; > + fchan->vchan.desc_free = st_fdma_free_desc; > + vchan_init(&fchan->vchan, &fdev->dma_device); this initialized a tasklet > +static int st_fdma_remove(struct platform_device *pdev) > +{ > + struct...
2016 Aug 30
1
[PATCH v8 05/18] dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support
...dev_err(&pdev->dev, "slim_rproc_alloc failed (%d)\n", ret); > + goto err; > + } > + > + /* Initialise list of FDMA channels */ > + INIT_LIST_HEAD(&fdev->dma_device.channels); > + for (i = 0; i < fdev->nr_channels; i++) { > + struct st_fdma_chan *fchan = &fdev->chans[i]; > + > + fchan->fdev = fdev; > + fchan->vchan.desc_free = st_fdma_free_desc; > + vchan_init(&fchan->vchan, &fdev->dma_device); this initialized a tasklet > +static int st_fdma_remove(struct platform_device *pdev) > +{ > + struct...
2009 Dec 08
2
E1 Channel Numbering - Your Comments.
...79 dchan=80 bchan=81-95 uchan=96 ... bchan=97-111 dchan=112 bchan=113-127 uchan=128 I quickly grabbed the "uchan" to mean "Unused" or "Unallocated". I am going to assume that there are some better ideas and names for this. One thought was "Framing" or "fchan" which does not exactly describe the channel. I did notice that depending on your locale the channel had several names. What are your ideas? ~ Andrew "lathama" Latham lathama at gmail.com * Learn more about OSS http://en.wikipedia.org/wiki/Open-source_software * Learn more ab...