From: Vinod Koul Subject: Re: [PATCH 38/39] dmaengine: ste_dma40: Fetch the number of physical channels from DT Date: Thu, 16 May 2013 12:04:14 +0530 Message-ID: <20130516063414.GB14863@intel.com> References: <1368611522-9984-1-git-send-email-lee.jones@linaro.org> <1368611522-9984-39-git-send-email-lee.jones@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, balbi@ti.com, linux-usb@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, herbert@gondor.hengli.com.au, arnd@arndb.de, linus.walleij@stericsson.com, srinidhi.kasagar@stericsson.com, Dan Williams , Per Forlin , Rabin Vincent To: Lee Jones Return-path: Received: from mga03.intel.com ([143.182.124.21]:41471 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752757Ab3EPHJk (ORCPT ); Thu, 16 May 2013 03:09:40 -0400 Content-Disposition: inline In-Reply-To: <1368611522-9984-39-git-send-email-lee.jones@linaro.org> Sender: linux-crypto-owner@vger.kernel.org List-ID: On Wed, May 15, 2013 at 10:52:01AM +0100, Lee Jones wrote: > Some platforms insist on obscure physical channel availability. This > information is currently passed though platform data in internal BSP > kernels. Once those platforms land, they'll need to configure them > appropriately, so we may as well add the infrastructure. > > Cc: Vinod Koul > Cc: Dan Williams > Cc: Per Forlin > Cc: Rabin Vincent > Signed-off-by: Lee Jones > --- Acked-by: Vinod Koul > drivers/dma/ste_dma40.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c > index ae462d3..4e528dd 100644 > --- a/drivers/dma/ste_dma40.c > +++ b/drivers/dma/ste_dma40.c > @@ -3482,7 +3482,7 @@ static int __init d40_of_probe(struct platform_device *pdev, > struct device_node *np) > { > struct stedma40_platform_data *pdata; > - int num_memcpy = 0; > + int num_phy = 0, num_memcpy = 0; > const const __be32 *list; > > pdata = devm_kzalloc(&pdev->dev, > @@ -3491,6 +3491,11 @@ static int __init d40_of_probe(struct platform_device *pdev, > if (!pdata) > return -ENOMEM; > > + /* If absent this value will be obtained from h/w. */ > + of_property_read_u32(np, "dma-channels", &num_phy); > + if (num_phy > 0) > + pdata->num_of_phy_chans = num_phy; > + > list = of_get_property(np, "memcpy-channels", &num_memcpy); > num_memcpy /= sizeof(*list); > > -- > 1.7.10.4 >