From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: [PATCH 00/22] Tahvo cleanups and Retu optimization Date: Mon, 11 Jul 2011 17:03:28 +0300 Message-ID: <20110711140326.GE2680@legolas.emea.dhcp.ti.com> References: <1310383055-20211-1-git-send-email-balbi@ti.com> <20110711132842.10606a31@maggie> <20110711131231.GB2680@legolas.emea.dhcp.ti.com> <20110711154126.082c1514@maggie> <20110711134551.GC2680@legolas.emea.dhcp.ti.com> <20110711155123.23c33a13@maggie> Reply-To: balbi@ti.com Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="1Ohz8t0v+ZTQEWKa" Return-path: Received: from na3sys009aog124.obsmtp.com ([74.125.149.151]:36513 "EHLO na3sys009aog124.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754506Ab1GKODd (ORCPT ); Mon, 11 Jul 2011 10:03:33 -0400 Received: by mail-yw0-f50.google.com with SMTP id 6so1788095ywa.37 for ; Mon, 11 Jul 2011 07:03:32 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20110711155123.23c33a13@maggie> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Michael =?iso-8859-1?Q?B=FCsch?= Cc: balbi@ti.com, Tony Lindgren , Linux OMAP Mailing List --1Ohz8t0v+ZTQEWKa Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Mon, Jul 11, 2011 at 03:51:23PM +0200, Michael B=FCsch wrote: > On Mon, 11 Jul 2011 16:45:53 +0300 > Felipe Balbi wrote: >=20 > > On Mon, Jul 11, 2011 at 03:41:26PM +0200, Michael B=FCsch wrote: > > > On Mon, 11 Jul 2011 16:12:32 +0300 > > > Felipe Balbi wrote: > > > > > Are you planning to implement a backlight driver for tahvo? I'm a= ctually > > > > > using the functionality that you removed in this patchset in the = OpenWRT > > > > > distribution. > > > >=20 > > > > if you have some extra documentation available, I could implement it > > > > whenever I have some extra couple hours to play with this again... I > > > > have no docs at all, but a led-tahvo.c would be really simple to get > > > > done :-) > > >=20 > > > All I have is the old code. No docs. It seems rather simple, though. > > > Only a PWM register. That's pretty straightforward. > >=20 > > cool, any pointers would be good ;-) >=20 > Pointers to what? How PWM works? > http://en.wikipedia.org/wiki/Pulse_width_modulation >=20 > You probably don't need to know the details, though. > Just write a 0 to the register to turn the LED off. And write > a 0xF (or 0x7F depending on tahvo revision) to the register to > turn it fully on. Any value in between to dim the LED. no, not to PWM... pointers to the code using the old interface ;-) --=20 balbi --1Ohz8t0v+ZTQEWKa Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJOGwKuAAoJEAv8Txj19kN1HtwIAIgbN3wNmOUUyHEpaN+01yfh bnckBlP+3f3Ohky3aWuM30iqJnf5eWmnzu9SrwZHDDHeERlrSfBxXIatyHpCGyA2 Sxntoi5E14jMKu1zMtP9fFTEoYs95qVy1FvtEa4s8uv7zTaXmOWBaEG4DoVz/WZ1 qa9/C8eEyP/oK/NgAwzG3Uwg/2aDxKwQByhHnl/LOCihR3PmvCR46mxxukC4FF1f zyW4UN1N72KMLTA2cnSpioeR/MyDWavVeK54DXGLVzTPLm9AyNK0Cz04art4BqBD zahMViUvefuLrDzRzFPYaUojN9+ErQ5xEsoDCIe076QU7g287KsJa88a27W3IZo= =RGjd -----END PGP SIGNATURE----- --1Ohz8t0v+ZTQEWKa--