From: Shawn Lin <shawn.lin@rock-chips.com>
To: Vinod Koul <vinod.koul@intel.com>,
Heiko Stuebner <heiko@sntech.de>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Mark Brown <broonie@kernel.org>
Cc: Doug Anderson <dianders@chromium.org>,
Olof Johansson <olofj@lixom.net>,
Sonny Rao <sonnyrao@chromium.org>,
Addy Ke <addy.ke@rock-chips.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, alsa-devel@alsa-project.org,
linux-spi@vger.kernel.org, Shawn Lin <shawn.lin@rock-chips.com>
Subject: [PATCH v5 06/10] dmaengine: add API for getting dma controller's quirk
Date: Mon, 14 Sep 2015 07:48:59 +0800 [thread overview]
Message-ID: <1442188139-6017-1-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1442187923-5736-1-git-send-email-shawn.lin@rock-chips.com>
Add dmaengine_get_quirks API for peripheral devices to query
quirks if they need it to make special workaround due to broken
dma controller design.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None
Changes in v1: None
include/linux/dmaengine.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index e2f5eb4..5174ca4 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -704,6 +704,7 @@ struct dma_device {
int (*device_config)(struct dma_chan *chan,
struct dma_slave_config *config);
+ int (*device_get_quirks)(struct dma_chan *chan);
int (*device_pause)(struct dma_chan *chan);
int (*device_resume)(struct dma_chan *chan);
int (*device_terminate_all)(struct dma_chan *chan);
@@ -723,6 +724,14 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
return -ENOSYS;
}
+static inline int dmaengine_get_quirks(struct dma_chan *chan)
+{
+ if (chan->device->device_get_quirks)
+ return chan->device->device_get_quirks(chan);
+
+ return -ENOSYS;
+}
+
static inline bool is_slave_direction(enum dma_transfer_direction direction)
{
return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
--
2.3.7
next prev parent reply other threads:[~2015-09-13 23:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-13 23:45 [PATCH v5 0/10] Fix broken DMAFLUSHP on Rockchips platform Shawn Lin
2015-09-13 23:46 ` [PATCH v5 01/10] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit Shawn Lin
2015-09-13 23:46 ` [PATCH v5 02/10] Documentation: arm-pl330: add description of arm,pl330-broken-no-flushp Shawn Lin
2015-09-13 23:48 ` [PATCH v5 03/10] DMA: pl330: add quirk for broken no flushp Shawn Lin
2015-09-13 23:48 ` [PATCH v5 04/10] ARM: dts: Add arm,pl330-broken-no-flushp quirk for rk3288 platform Shawn Lin
2015-09-13 23:48 ` [PATCH v5 05/10] ARM: dts: Add arm,pl330-broken-no-flushp quirk for rk3xxx platform Shawn Lin
2015-09-13 23:48 ` Shawn Lin [this message]
2015-10-05 15:37 ` [PATCH v5 06/10] dmaengine: add API for getting dma controller's quirk Vinod Koul
2015-10-06 9:21 ` Shawn Lin
2015-10-07 14:32 ` Vinod Koul
2015-10-09 11:23 ` Shawn Lin
2015-10-08 8:31 ` [alsa-devel] " Lars-Peter Clausen
2015-10-09 11:31 ` Shawn Lin
2015-10-09 11:38 ` Lars-Peter Clausen
2015-10-14 10:53 ` Vinod Koul
2015-10-14 14:33 ` Shawn Lin
2015-09-13 23:49 ` [PATCH v5 07/10] DMA: pl330: implement dmaengine_get_quirks hook Shawn Lin
2015-09-13 23:49 ` [PATCH v5 08/10] spi: rockchip: modify DMA max burst to 1 Shawn Lin
2015-09-13 23:49 ` [PATCH v5 09/10] snd: dmaengine-pcm: add snd_dmaengine_pcm_get_quirks interface Shawn Lin
2015-09-13 23:49 ` [PATCH v5 10/10] ASoC: rockchip_i2s: modify DMA max burst to 1 Shawn Lin
2015-09-16 19:22 ` Mark Brown
2015-09-28 1:59 ` [PATCH v5 0/10] Fix broken DMAFLUSHP on Rockchips platform Shawn Lin
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