From: Roger Quadros <roger.quadros@nokia.com> To: ext Ohad Ben-Cohen <ohad@wizery.com> Cc: Nicolas Pitre <nico@fluxnic.net>, "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>, "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>, "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux@arm.linux.org.uk" <linux@arm.linux.org.uk>, Chikkature Rajashekar Madhusudhan <madhu.cr@ti.com>, "Coelho Luciano (Nokia-MS/Helsinki)" <Luciano.Coelho@nokia.com>, Andrew Morton <akpm@linux-foundation.org>, San Mehat <san@google.com>, "Pandita, Vikram" <vikram.pandita@ti.com> Subject: Re: [PATCH 05/15] omap: hsmmc: add virtual card detect support Date: Tue, 06 Jul 2010 14:02:15 +0300 [thread overview] Message-ID: <4C330D37.4090104@nokia.com> (raw) In-Reply-To: <AANLkTim4E4LlFERmfYA1M0HLBOoRAsQuvdW6QBNu6pC0@mail.gmail.com> On 07/06/2010 01:22 PM, ext Ohad Ben-Cohen wrote: > Hi Nicolas, > > On Tue, Jul 6, 2010 at 4:45 AM, Nicolas Pitre<nico@fluxnic.net> wrote: >> On Tue, 6 Jul 2010, Ohad Ben-Cohen wrote: >> >>> From: Ohad Ben-Cohen<ohadb@ti.com> >>> >>> Add support for software emulation of card detect >>> events. >>> >>> This is required for specific controllers >>> that are hard wired with embedded SDIO devices >>> (such as TI's wl1271 WLAN device). >> >> Why? >> >> Many instances of hardwired SDIO based WLAN devices do exist already, >> and they don't need extra card detect events to be generated. The core >> MMC code already triggers a probe for cards whenever a new host >> controller is registered. > > We prefer not to power up the chip as early as boot time; instead, we Why? if the card is hard wired with no card detect then it should be powered up. The function driver should power it down later if required. no? > would like to have it powered off until the wlan interface is brought > up, power it on when the interface is brought up, If it was powered OFF then how did the wlan interface come into picture? > and power it off again as soon as the interface is brought down again > (to minimize power consumption when the wlan is not in use). I agree, we some how need to power down the card when not in use in the right way.
WARNING: multiple messages have this Message-ID (diff)
From: roger.quadros@nokia.com (Roger Quadros) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 05/15] omap: hsmmc: add virtual card detect support Date: Tue, 06 Jul 2010 14:02:15 +0300 [thread overview] Message-ID: <4C330D37.4090104@nokia.com> (raw) In-Reply-To: <AANLkTim4E4LlFERmfYA1M0HLBOoRAsQuvdW6QBNu6pC0@mail.gmail.com> On 07/06/2010 01:22 PM, ext Ohad Ben-Cohen wrote: > Hi Nicolas, > > On Tue, Jul 6, 2010 at 4:45 AM, Nicolas Pitre<nico@fluxnic.net> wrote: >> On Tue, 6 Jul 2010, Ohad Ben-Cohen wrote: >> >>> From: Ohad Ben-Cohen<ohadb@ti.com> >>> >>> Add support for software emulation of card detect >>> events. >>> >>> This is required for specific controllers >>> that are hard wired with embedded SDIO devices >>> (such as TI's wl1271 WLAN device). >> >> Why? >> >> Many instances of hardwired SDIO based WLAN devices do exist already, >> and they don't need extra card detect events to be generated. The core >> MMC code already triggers a probe for cards whenever a new host >> controller is registered. > > We prefer not to power up the chip as early as boot time; instead, we Why? if the card is hard wired with no card detect then it should be powered up. The function driver should power it down later if required. no? > would like to have it powered off until the wlan interface is brought > up, power it on when the interface is brought up, If it was powered OFF then how did the wlan interface come into picture? > and power it off again as soon as the interface is brought down again > (to minimize power consumption when the wlan is not in use). I agree, we some how need to power down the card when not in use in the right way.
next prev parent reply other threads:[~2010-07-06 11:03 UTC|newest] Thread overview: 161+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-07-06 0:37 [PATCH 00/15] wlan+omap+mmc: out-of-the-box WLAN support for ZOOM2/3 Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 01/15] sdio: add TI + wl1271 ids Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 02/15] wireless: wl1271: remove SDIO IDs from driver Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 7:04 ` Luciano Coelho 2010-07-06 7:04 ` Luciano Coelho 2010-07-06 0:37 ` [PATCH 03/15] omap: mmc: prepare for software card detect support Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 04/15] mmc: support embedded data field in mmc_host Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 15:49 ` Grazvydas Ignotas 2010-07-06 15:49 ` Grazvydas Ignotas 2010-07-06 15:49 ` Grazvydas Ignotas 2010-07-06 15:54 ` Ohad Ben-Cohen 2010-07-06 15:54 ` Ohad Ben-Cohen 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-06 0:37 ` [PATCH 05/15] omap: hsmmc: add virtual card detect support Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 1:45 ` Nicolas Pitre 2010-07-06 1:45 ` Nicolas Pitre 2010-07-06 10:22 ` Ohad Ben-Cohen 2010-07-06 10:22 ` Ohad Ben-Cohen 2010-07-06 10:22 ` Ohad Ben-Cohen 2010-07-06 11:02 ` Roger Quadros [this message] 2010-07-06 11:02 ` Roger Quadros 2010-07-06 12:02 ` Ohad Ben-Cohen 2010-07-06 12:02 ` Ohad Ben-Cohen 2010-07-06 11:48 ` Ohad Ben-Cohen 2010-07-06 11:48 ` Ohad Ben-Cohen 2010-07-06 12:39 ` Roger Quadros 2010-07-06 12:39 ` Roger Quadros 2010-07-06 13:44 ` Ohad Ben-Cohen 2010-07-06 13:44 ` Ohad Ben-Cohen 2010-07-06 15:34 ` Madhusudhan 2010-07-06 15:34 ` Madhusudhan 2010-07-06 15:34 ` Madhusudhan 2010-07-06 17:00 ` Nicolas Pitre 2010-07-06 17:00 ` Nicolas Pitre 2010-07-06 0:37 ` [PATCH 06/15] omap zoom2: wlan board muxing Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 11:43 ` Tony Lindgren 2010-07-06 11:43 ` Tony Lindgren 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 9:45 ` Tony Lindgren 2010-07-08 9:45 ` Tony Lindgren 2010-07-08 20:12 ` Ohad Ben-Cohen 2010-07-08 20:12 ` Ohad Ben-Cohen 2010-07-08 20:12 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 07/15] omap zoom3: " Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 08/15] wireless: wl1271: make wl12xx.h common to both spi and sdio Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 7:08 ` Luciano Coelho 2010-07-06 7:08 ` Luciano Coelho 2010-07-06 7:08 ` Luciano Coelho 2010-07-06 0:37 ` [PATCH 09/15] wireless: wl12xx: support pdata SDIO handlers Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 10/15] wireless: wl1271: support return value for the set power func Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 7:11 ` Luciano Coelho 2010-07-06 7:11 ` Luciano Coelho 2010-07-06 0:37 ` [PATCH 11/15] wireless: wl1271: introduce platform device support Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 8:53 ` Roger Quadros 2010-07-06 8:53 ` Roger Quadros 2010-07-06 8:53 ` Roger Quadros 2010-07-06 9:30 ` Ohad Ben-Cohen 2010-07-06 9:30 ` Ohad Ben-Cohen 2010-07-06 9:30 ` Ohad Ben-Cohen 2010-07-06 10:35 ` Roger Quadros 2010-07-06 10:35 ` Roger Quadros 2010-07-06 12:53 ` Ohad Ben-Cohen 2010-07-06 12:53 ` Ohad Ben-Cohen 2010-07-06 14:30 ` Roger Quadros 2010-07-06 14:30 ` Roger Quadros 2010-07-06 17:42 ` Nicolas Pitre 2010-07-06 17:42 ` Nicolas Pitre 2010-07-06 17:42 ` Nicolas Pitre 2010-07-06 19:51 ` Adrian Hunter 2010-07-06 19:51 ` Adrian Hunter 2010-07-07 8:02 ` Roger Quadros 2010-07-07 8:02 ` Roger Quadros 2010-07-07 8:02 ` Roger Quadros 2010-07-07 14:02 ` Nicolas Pitre 2010-07-07 14:02 ` Nicolas Pitre 2010-07-07 14:54 ` Madhusudhan 2010-07-07 14:54 ` Madhusudhan 2010-07-07 14:54 ` Madhusudhan 2010-07-07 15:46 ` Nicolas Pitre 2010-07-07 15:46 ` Nicolas Pitre 2010-07-07 19:59 ` Adrian Hunter 2010-07-07 19:59 ` Adrian Hunter 2010-07-08 4:34 ` Nicolas Pitre 2010-07-08 4:34 ` Nicolas Pitre 2010-07-08 4:34 ` Nicolas Pitre 2010-07-07 7:48 ` Roger Quadros 2010-07-07 7:48 ` Roger Quadros 2010-07-07 13:52 ` Nicolas Pitre 2010-07-07 13:52 ` Nicolas Pitre 2010-07-08 8:54 ` Roger Quadros 2010-07-08 8:54 ` Roger Quadros 2010-07-08 20:10 ` Ohad Ben-Cohen 2010-07-08 20:10 ` Ohad Ben-Cohen 2010-07-09 8:12 ` Roger Quadros 2010-07-09 8:12 ` Roger Quadros 2010-07-09 8:32 ` Ohad Ben-Cohen 2010-07-09 8:32 ` Ohad Ben-Cohen 2010-07-09 9:24 ` Grazvydas Ignotas 2010-07-09 9:24 ` Grazvydas Ignotas 2010-08-10 21:21 ` Ohad Ben-Cohen 2010-08-10 21:21 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 12/15] wireless: wl1271: take irq info from platform data Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 13/15] wireless: wl1271: make ref_clock configurable by board Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` [PATCH 14/15] omap: zoom: add WLAN device Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 12:33 ` Roger Quadros 2010-07-06 12:33 ` Roger Quadros 2010-07-06 13:47 ` Ohad Ben-Cohen 2010-07-06 13:47 ` Ohad Ben-Cohen 2010-07-06 13:47 ` Ohad Ben-Cohen 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-06 0:37 ` [PATCH 15/15] omap: zoom: enable " Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-06 0:37 ` Ohad Ben-Cohen 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 20:13 ` Ohad Ben-Cohen 2010-07-08 20:13 ` Ohad Ben-Cohen 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` [PATCH 00/15] wlan+omap+mmc: out-of-the-box WLAN support for ZOOM2/3 Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar 2010-07-08 3:39 ` Ghorai, Sukumar
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