From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Lin Subject: [PATCH v6 07/10] DMA: pl330: add max burst for dmaengine Date: Thu, 15 Oct 2015 09:36:14 +0800 Message-ID: <1444872974-2466-1-git-send-email-shawn.lin@rock-chips.com> References: <1444872865-2169-1-git-send-email-shawn.lin@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Addy Ke , Lars-Peter Clausen , alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, Boojin Kim , Shawn Lin , Doug Anderson , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Olof Johansson , linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sonny Rao , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: Vinod Koul , Heiko Stuebner , Jaroslav Kysela , Takashi Iwai , Mark Brown Return-path: In-Reply-To: <1444872865-2169-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-spi.vger.kernel.org This patch add max burst capability for dmaengine and limit burst capability to one for PL330_QUIRK_BROKEN_NO_FLUSHP Signed-off-by: Shawn Lin --- Changes in v6: - remove expose quirks and add max_burst for dmaengine Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None Changes in v1: None drivers/dma/pl330.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 008408d..1b0453b 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -33,6 +33,7 @@ #define PL330_MAX_CHAN 8 #define PL330_MAX_IRQS 32 #define PL330_MAX_PERI 32 +#define PL330_MAX_BURST 16 #define PL330_QUIRK_BROKEN_NO_FLUSHP BIT(0) @@ -2938,6 +2939,8 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) pd->dst_addr_widths = PL330_DMA_BUSWIDTHS; pd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); pd->residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT; + pd->max_burst = ((pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) ? + 1 : PL330_MAX_BURST); ret = dma_async_device_register(pd); if (ret) { -- 2.3.7