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Groups > linux.kernel > #1278618
| Path | csiph.com!fu-berlin.de!bofh.it!news.nic.it!robomod |
|---|---|
| From | Peter Ujfalusi <peter.ujfalusi@ti.com> |
| Newsgroups | linux.kernel |
| Subject | [RFC 4/6] dmaengine: edma: Add support for DMA filter mapping to slave devices |
| Date | Fri, 27 Nov 2015 09:40:02 +0100 |
| Message-ID | <qzmJs-pZ-13@gated-at.bofh.it> (permalink) |
| References | <qzmJs-pZ-3@gated-at.bofh.it> |
| X-Original-To | <vinod.koul@intel.com>, <arnd@arndb.de>, <andy.shevchenko@gmail.com> |
| X-Mailer | git-send-email 2.6.3 |
| MIME-Version | 1.0 |
| Content-Type | text/plain |
| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 48 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | <linux-kernel@vger.kernel.org>, <dmaengine@vger.kernel.org>, <linux-omap@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-mmc@vger.kernel.org>, <nsekhar@ti.com> |
| X-Original-Date | Fri, 27 Nov 2015 10:29:40 +0200 |
| X-Original-Message-ID | <1448612982-28141-5-git-send-email-peter.ujfalusi@ti.com> |
| X-Original-References | <1448612982-28141-1-git-send-email-peter.ujfalusi@ti.com> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1278618 |
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Add support for providing device to filter_fn mapping so client drivers
can switch to use the dma_request_chan() API.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/dma/edma.c | 6 ++++++
include/linux/platform_data/edma.h | 3 +++
2 files changed, 9 insertions(+)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 0675e268d577..587ceb9308b3 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -2297,6 +2297,12 @@ static int edma_probe(struct platform_device *pdev)
edma_set_chmap(&ecc->slave_chans[i], ecc->dummy_slot);
}
+ if (info->devnames) {
+ ecc->dma_slave.filter_map.devnames = info->devnames;
+ ecc->dma_slave.filter_map.devcnt = info->devcnt;
+ ecc->dma_slave.filter_map.filter_fn = edma_filter_fn;
+ }
+
ret = dma_async_device_register(&ecc->dma_slave);
if (ret) {
dev_err(dev, "slave ddev registration failed (%d)\n", ret);
diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h
index e2878baeb90e..58a4dcba0bdf 100644
--- a/include/linux/platform_data/edma.h
+++ b/include/linux/platform_data/edma.h
@@ -76,6 +76,9 @@ struct edma_soc_info {
s8 (*queue_priority_mapping)[2];
const s16 (*xbar_chans)[2];
+
+ char **devnames;
+ int devcnt;
};
#endif
--
2.6.3
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[RFC 0/6] dmaengine: New 'universal' API for requesting channel Peter Ujfalusi <peter.ujfalusi@ti.com> - 2015-11-27 09:40 +0100 [RFC 6/6] mmc: davinci_mmc: Switch to use the new dmaengine API for requesting channel (NOT FOR MERGE) Peter Ujfalusi <peter.ujfalusi@ti.com> - 2015-11-27 09:40 +0100 [RFC 2/6] dmaengine: core: Move and merge the code paths using private_candidate Peter Ujfalusi <peter.ujfalusi@ti.com> - 2015-11-27 09:40 +0100 [RFC 4/6] dmaengine: edma: Add support for DMA filter mapping to slave devices Peter Ujfalusi <peter.ujfalusi@ti.com> - 2015-11-27 09:40 +0100 [RFC 5/6] ARM: davinci: devices-da8xx: device -> dma instance mapping support Peter Ujfalusi <peter.ujfalusi@ti.com> - 2015-11-27 09:40 +0100
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