LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Jamie Iles <jamie@jamieiles.com>
To: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: Jamie Iles <jamie@jamieiles.com>,
	linux-kernel@vger.kernel.org,
	Dan Williams <dan.j.williams@intel.com>,
	nicolas.ferre@atmel.com
Subject: Re: [PATCH repost 4/4] avr32: at32ap700x: specify DMA src and dst masters
Date: Mon, 21 Feb 2011 14:45:40 +0000	[thread overview]
Message-ID: <20110221144539.GD2744@pulham.picochip.com> (raw)
In-Reply-To: <1298295901.24505.68.camel@hcegtvedt>

On Mon, Feb 21, 2011 at 02:45:00PM +0100, Hans-Christian Egtvedt wrote:
> On Fri, 2011-01-21 at 14:11 +0000, Jamie Iles wrote: 
> > Now that the dw_dmac DMA driver supports configurable source and
> > destination masters we need to specify which ones to use. This was
> > previously hardcoded to 0 and 1 respectively in the driver.
> > 
> > Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
> > Cc: Dan Williams <dan.j.williams@intel.com>
> > Signed-off-by: Jamie Iles <jamie@jamieiles.com>
> > ---
> >  arch/avr32/mach-at32ap/at32ap700x.c |    6 ++++++
> >  1 files changed, 6 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
> > index e67c999..2747cde 100644
> > --- a/arch/avr32/mach-at32ap/at32ap700x.c
> > +++ b/arch/avr32/mach-at32ap/at32ap700x.c
> > @@ -2048,6 +2048,8 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data,
> >  		rx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT;
> >  		rx_dws->cfg_hi = DWC_CFGH_SRC_PER(3);
> >  		rx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
> > +		rx_dws->src_master = 0;
> > +		rx_dws->dst_master = 1;
> >  	}
> >  
> >  	/* Check if DMA slave interface for playback should be configured. */
> > @@ -2056,6 +2058,8 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data,
> >  		tx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT;
> >  		tx_dws->cfg_hi = DWC_CFGH_DST_PER(4);
> >  		tx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
> > +		rx_dws->src_master = 0;
> > +		rx_dws->dst_master = 1;
> 
> Spotted by Nicolas Ferre, you use the wrong struct here, should be
> tx_dws, not rx_dws.

Apologies, here's a patch to fix it up.

Jamie

8<--------

>From 9068d500450ad6f5189b9a71463851349700c505 Mon Sep 17 00:00:00 2001
From: Jamie Iles <jamie@jamieiles.com>
Date: Mon, 21 Feb 2011 14:38:32 +0000
Subject: [PATCH] avr32: at32ap700x: fix typo in DMA master configuration

Commit 4aa5f366431fe (avr32: at32ap700x: specify DMA src and dst
masters) specified the masters for the ac97c playback device
but incorrectly set them in the capture slave information rather
than playback.

Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
---
 arch/avr32/mach-at32ap/at32ap700x.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 2747cde..4635c7c 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -2058,8 +2058,8 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data,
 		tx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT;
 		tx_dws->cfg_hi = DWC_CFGH_DST_PER(4);
 		tx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
-		rx_dws->src_master = 0;
-		rx_dws->dst_master = 1;
+		tx_dws->src_master = 0;
+		tx_dws->dst_master = 1;
 	}
 
 	if (platform_device_add_data(pdev, data,
-- 
1.7.4


  reply	other threads:[~2011-02-21 14:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-21 14:11 [PATCH repost 0/4] dmaengine/dw_dmac: enhancements to allow use Jamie Iles
2011-01-21 14:11 ` [PATCH repost 1/4] dmaengine/dw_dmac: don't scan descriptors if no xfers in progress Jamie Iles
2011-01-21 14:11 ` [PATCH repost 2/4] dmaengine/dw_dmac: allow src/dst masters to be configured at runtime Jamie Iles
2011-01-24 14:54   ` Hans-Christian Egtvedt
2011-01-21 14:11 ` [PATCH repost 3/4] dmaengine/dw_dmac: provide a mechanism to indicate private devices Jamie Iles
2011-01-21 14:11 ` [PATCH repost 4/4] avr32: at32ap700x: specify DMA src and dst masters Jamie Iles
2011-01-24 14:59   ` Hans-Christian Egtvedt
2011-01-30  6:33     ` Dan Williams
2011-02-04 11:06       ` Jamie Iles
2011-02-21 13:45   ` Hans-Christian Egtvedt
2011-02-21 14:45     ` Jamie Iles [this message]
2011-03-15 14:56       ` Jamie Iles
2011-03-16  2:08         ` Koul, Vinod

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20110221144539.GD2744@pulham.picochip.com \
    --to=jamie@jamieiles.com \
    --cc=dan.j.williams@intel.com \
    --cc=hans-christian.egtvedt@atmel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=nicolas.ferre@atmel.com \
    --subject='Re: [PATCH repost 4/4] avr32: at32ap700x: specify DMA src and dst masters' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).