| Message ID | 1348152226-13588-8-git-send-email-mporter@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
* Matt Porter <mporter@ti.com> [120920 07:43]: > For platforms with DT populated, use dma_request_slave_channel() > to acquire the DMA channel. For !DT platforms, we fall back to > explicitly passing the omap_dma_filter_fn() to dma_request_channel(). > Once all platforms boot from DT, the dma_request_channel() path can > be dropped. > > Signed-off-by: Matt Porter <mporter@ti.com> > --- > drivers/mmc/host/omap_hsmmc.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > index 3a09f93..c82d0ab 100644 > --- a/drivers/mmc/host/omap_hsmmc.c > +++ b/drivers/mmc/host/omap_hsmmc.c > @@ -1923,14 +1923,26 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) > dma_cap_zero(mask); > dma_cap_set(DMA_SLAVE, mask); > > - host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req); > + if (pdev->dev.of_node) > + host->rx_chan = > + dma_request_slave_channel(&pdev->dev, "rx"); > + else > + host->rx_chan = dma_request_channel(mask, > + omap_dma_filter_fn, > + &rx_req); > if (!host->rx_chan) { > dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req); > ret = -ENXIO; > goto err_irq; > } > > - host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req); > + if (pdev->dev.of_node) > + host->tx_chan = > + dma_request_slave_channel(&pdev->dev, "tx"); > + else > + host->tx_chan = dma_request_channel(mask, > + omap_dma_filter_fn, > + &tx_req); > if (!host->tx_chan) { > dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req); > ret = -ENXIO; > Here to the omap_hsmmc.c driver should not need to care about which way to request the dma channels. Regards, Tony
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 3a09f93..c82d0ab 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1923,14 +1923,26 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req); + if (pdev->dev.of_node) + host->rx_chan = + dma_request_slave_channel(&pdev->dev, "rx"); + else + host->rx_chan = dma_request_channel(mask, + omap_dma_filter_fn, + &rx_req); if (!host->rx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req); ret = -ENXIO; goto err_irq; } - host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req); + if (pdev->dev.of_node) + host->tx_chan = + dma_request_slave_channel(&pdev->dev, "tx"); + else + host->tx_chan = dma_request_channel(mask, + omap_dma_filter_fn, + &tx_req); if (!host->tx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req); ret = -ENXIO;
For platforms with DT populated, use dma_request_slave_channel() to acquire the DMA channel. For !DT platforms, we fall back to explicitly passing the omap_dma_filter_fn() to dma_request_channel(). Once all platforms boot from DT, the dma_request_channel() path can be dropped. Signed-off-by: Matt Porter <mporter@ti.com> --- drivers/mmc/host/omap_hsmmc.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)