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From: Huang Shijie <b32955@freescale.com>
To: Marek Vasut <marex@denx.de>
Cc: Vinod Koul <vinod.koul@linux.intel.com>,
	djbw@fb.com, khali@linux-fr.org, ben-linux@fluff.org,
	w.sang@pengutronix.de, cjb@laptop.org, dwmw2@infradead.org,
	lrg@ti.com, broonie@opensource.wolfsonmicro.com, perex@perex.cz,
	tiwai@suse.de, shawn.guo@linaro.org,
	artem.bityutskiy@linux.intel.com, linux-kernel@vger.kernel.org,
	linux-i2c@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-mtd@lists.infradead.org, alsa-devel@alsa-project.org,
	linux-arm-kernel@lists.infradead.org, linux@arm.linux.org.uk,
	Huang Shijie <shijie8@gmail.com>,
	Fabio Estevam <fabio.estevam@freescale.com>
Subject: Re: [PATCH] dma: add new DMA control commands
Date: Thu, 18 Oct 2012 16:49:20 +0800	[thread overview]
Message-ID: <507FC290.10205@freescale.com> (raw)
In-Reply-To: <201210181016.06782.marex@denx.de>

于 2012年10月18日 16:16, Marek Vasut 写道:
> So we can't stream data from the chip? About time to adjust the MTD framework to
> allow that. Maybe implement a command queue?
>
IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to 
check the busy status
which means we have to stop in the middle, so we can not chain the all 
the read-pages DMA commands.

thanks
Huang Shijie



WARNING: multiple messages have this Message-ID (diff)
From: Huang Shijie <b32955@freescale.com>
To: Marek Vasut <marex@denx.de>
Cc: alsa-devel@alsa-project.org, tiwai@suse.de,
	artem.bityutskiy@linux.intel.com, perex@perex.cz,
	linux-mtd@lists.infradead.org, linux-i2c@vger.kernel.org,
	Huang Shijie <shijie8@gmail.com>,
	linux@arm.linux.org.uk, cjb@laptop.org, lrg@ti.com,
	ben-linux@fluff.org, linux-arm-kernel@lists.infradead.org,
	Fabio Estevam <fabio.estevam@freescale.com>,
	Vinod Koul <vinod.koul@linux.intel.com>,
	broonie@opensource.wolfsonmicro.com, linux-mmc@vger.kernel.org,
	w.sang@pengutronix.de, linux-kernel@vger.kernel.org, djbw@fb.com,
	khali@linux-fr.org, shawn.guo@linaro.org, dwmw2@infradead.org
Subject: Re: [PATCH] dma: add new DMA control commands
Date: Thu, 18 Oct 2012 16:49:20 +0800	[thread overview]
Message-ID: <507FC290.10205@freescale.com> (raw)
In-Reply-To: <201210181016.06782.marex@denx.de>

于 2012年10月18日 16:16, Marek Vasut 写道:
> So we can't stream data from the chip? About time to adjust the MTD framework to
> allow that. Maybe implement a command queue?
>
IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to 
check the busy status
which means we have to stop in the middle, so we can not chain the all 
the read-pages DMA commands.

thanks
Huang Shijie

WARNING: multiple messages have this Message-ID (diff)
From: b32955@freescale.com (Huang Shijie)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] dma: add new DMA control commands
Date: Thu, 18 Oct 2012 16:49:20 +0800	[thread overview]
Message-ID: <507FC290.10205@freescale.com> (raw)
In-Reply-To: <201210181016.06782.marex@denx.de>

? 2012?10?18? 16:16, Marek Vasut ??:
> So we can't stream data from the chip? About time to adjust the MTD framework to
> allow that. Maybe implement a command queue?
>
IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to 
check the busy status
which means we have to stop in the middle, so we can not chain the all 
the read-pages DMA commands.

thanks
Huang Shijie

WARNING: multiple messages have this Message-ID (diff)
From: Huang Shijie <b32955@freescale.com>
To: Marek Vasut <marex@denx.de>
Cc: Vinod Koul <vinod.koul@linux.intel.com>, <djbw@fb.com>,
	<khali@linux-fr.org>, <ben-linux@fluff.org>,
	<w.sang@pengutronix.de>, <cjb@laptop.org>, <dwmw2@infradead.org>,
	<lrg@ti.com>, <broonie@opensource.wolfsonmicro.com>,
	<perex@perex.cz>, <tiwai@suse.de>, <shawn.guo@linaro.org>,
	<artem.bityutskiy@linux.intel.com>,
	<linux-kernel@vger.kernel.org>, <linux-i2c@vger.kernel.org>,
	<linux-mmc@vger.kernel.org>, <linux-mtd@lists.infradead.org>,
	<alsa-devel@alsa-project.org>,
	<linux-arm-kernel@lists.infradead.org>, <linux@arm.linux.org.uk>,
	Huang Shijie <shijie8@gmail.com>,
	Fabio Estevam <fabio.estevam@freescale.com>
Subject: Re: [PATCH] dma: add new DMA control commands
Date: Thu, 18 Oct 2012 16:49:20 +0800	[thread overview]
Message-ID: <507FC290.10205@freescale.com> (raw)
In-Reply-To: <201210181016.06782.marex@denx.de>

于 2012年10月18日 16:16, Marek Vasut 写道:
> So we can't stream data from the chip? About time to adjust the MTD framework to
> allow that. Maybe implement a command queue?
>
IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to 
check the busy status
which means we have to stop in the middle, so we can not chain the all 
the read-pages DMA commands.

thanks
Huang Shijie



  parent reply	other threads:[~2012-10-18  8:49 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-18  5:32 [PATCH] dma: add new DMA control commands Huang Shijie
2012-10-18  5:32 ` Huang Shijie
2012-10-18  5:32 ` Huang Shijie
2012-10-18  5:32 ` Huang Shijie
2012-10-18  6:18 ` Vinod Koul
2012-10-18  6:18   ` Vinod Koul
2012-10-18  6:18   ` Vinod Koul
2012-10-18  6:45   ` Huang Shijie
2012-10-18  6:45     ` Huang Shijie
2012-10-18  6:45     ` Huang Shijie
2012-10-18  6:45     ` Huang Shijie
     [not found]     ` <507FA595.4020507-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-10-18  7:14       ` Marek Vasut
2012-10-18  7:14         ` Marek Vasut
2012-10-18  7:14         ` Marek Vasut
2012-10-18  7:14         ` Marek Vasut
2012-10-18  7:49         ` Huang Shijie
2012-10-18  7:49           ` Huang Shijie
2012-10-18  7:49           ` Huang Shijie
2012-10-18  7:49           ` Huang Shijie
     [not found]           ` <507FB495.7050104-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-10-18  8:16             ` Marek Vasut
2012-10-18  8:16               ` Marek Vasut
2012-10-18  8:16               ` Marek Vasut
2012-10-18  8:16               ` Marek Vasut
2012-10-18  8:29               ` Huang Shijie
2012-10-18  8:29                 ` Huang Shijie
2012-10-18  8:29                 ` Huang Shijie
2012-10-18  8:29                 ` Huang Shijie
2012-11-09 15:29                 ` Artem Bityutskiy
2012-11-09 15:29                   ` Artem Bityutskiy
2012-11-09 15:29                   ` Artem Bityutskiy
2012-10-18  8:49               ` Huang Shijie [this message]
2012-10-18  8:49                 ` Huang Shijie
2012-10-18  8:49                 ` Huang Shijie
2012-10-18  8:49                 ` Huang Shijie
     [not found]                 ` <507FC290.10205-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-10-18  8:49                   ` Marek Vasut
2012-10-18  8:49                     ` Marek Vasut
2012-10-18  8:49                     ` Marek Vasut
2012-10-18  8:49                     ` Marek Vasut
2012-10-18  9:13                     ` Huang Shijie
2012-10-18  9:13                       ` Huang Shijie
2012-10-18  9:13                       ` Huang Shijie
2012-10-18  9:13                       ` Huang Shijie
     [not found]                       ` <507FC827.40601-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-10-18 10:51                         ` Marek Vasut
2012-10-18 10:51                           ` Marek Vasut
2012-10-18 10:51                           ` Marek Vasut
2012-10-18 10:51                           ` Marek Vasut
     [not found]                           ` <201210181251.15116.marex-ynQEQJNshbs@public.gmane.org>
2012-10-18 15:11                             ` Huang Shijie
2012-10-18 15:11                               ` Huang Shijie
2012-10-18 15:11                               ` Huang Shijie
2012-10-18 15:11                               ` Huang Shijie
2012-10-18  8:52     ` Russell King - ARM Linux
2012-10-18  8:52       ` Russell King - ARM Linux
2012-10-18  8:52       ` Russell King - ARM Linux
     [not found]       ` <20121018085208.GR21164-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2012-10-18  9:10         ` Huang Shijie
2012-10-18  9:10           ` Huang Shijie
2012-10-18  9:10           ` Huang Shijie
2012-10-18  9:10           ` Huang Shijie
2012-10-18  9:29     ` Jassi Brar
2012-10-18  9:29       ` Jassi Brar
2012-10-18  9:29       ` Jassi Brar
2012-10-18 15:18       ` Huang Shijie
2012-10-18 15:18         ` Huang Shijie
2012-10-18 15:18         ` Huang Shijie
2012-10-18 15:25         ` Jassi Brar
2012-10-18 15:25           ` Jassi Brar
2012-10-18 15:25           ` Jassi Brar

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