From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: [RFC v03 04/15] dmaengine: edma: Add support for DMA filter mapping to slave devices Date: Wed, 2 Dec 2015 15:59:14 +0200 Message-ID: <1449064765-27427-5-git-send-email-peter.ujfalusi@ti.com> References: <1449064765-27427-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: tony@atomide.com, linux-mmc@vger.kernel.org, nsekhar@ti.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, dmaengine@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org To: , , Return-path: In-Reply-To: <1449064765-27427-1-git-send-email-peter.ujfalusi@ti.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org List-Id: linux-spi.vger.kernel.org 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 --- drivers/dma/edma.c | 6 ++++++ include/linux/platform_data/edma.h | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 0675e268d577..46b305ea0d21 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->slave_map) { + ecc->dma_slave.filter_map.map = info->slave_map; + ecc->dma_slave.filter_map.mapcnt = info->slavecnt; + 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..4e78a946e0c1 100644 --- a/include/linux/platform_data/edma.h +++ b/include/linux/platform_data/edma.h @@ -53,12 +53,16 @@ enum dma_event_q { #define EDMA_CTLR(i) ((i) >> 16) #define EDMA_CHAN_SLOT(i) ((i) & 0xffff) +#define EDMA_FILTER_PARAM(ctlr, chan) ((int[]) { EDMA_CTLR_CHAN(ctlr, chan) }) + struct edma_rsv_info { const s16 (*rsv_chans)[2]; const s16 (*rsv_slots)[2]; }; +struct dma_filter_map; + /* platform_data for EDMA driver */ struct edma_soc_info { /* @@ -76,6 +80,9 @@ struct edma_soc_info { s8 (*queue_priority_mapping)[2]; const s16 (*xbar_chans)[2]; + + const struct dma_filter_map *slave_map; + int slavecnt; }; #endif -- 2.6.3