All of 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 \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.