Re: [RFC PATCHv5 2/7] HSI: omap_ssi: Introducing OMAP SSI driver

From: Carlos Chinea
Date: Tue Jun 14 2011 - 08:16:32 EST


On Mon, 2011-06-13 at 13:21 -0700, ext Kevin Hilman wrote:
> Carlos Chinea <carlos.chinea@xxxxxxxxx> writes:
>
> > Introduces the OMAP SSI driver in the kernel.
> >
> > The Synchronous Serial Interface (SSI) is a legacy version
> > of HSI. As in the case of HSI, it is mainly used to connect
> > Application engines (APE) with cellular modem engines (CMT)
> > in cellular handsets.
> >
> > It provides a multichannel, full-duplex, multi-core communication
> > with no reference clock. The OMAP SSI block is capable of reaching
> > speeds of 110 Mbit/s.
> >
> > Signed-off-by: Carlos Chinea <carlos.chinea@xxxxxxxxx>
> > ---
> > arch/arm/mach-omap2/ssi.c | 134 +++
> > arch/arm/plat-omap/include/plat/ssi.h | 204 ++++
> > drivers/hsi/controllers/omap_ssi.c | 1852 +++++++++++++++++++++++++++++++++
> > 3 files changed, 2190 insertions(+), 0 deletions(-)
> > create mode 100644 arch/arm/mach-omap2/ssi.c
> > create mode 100644 arch/arm/plat-omap/include/plat/ssi.h
> > create mode 100644 drivers/hsi/controllers/omap_ssi.c
> >
> > diff --git a/arch/arm/mach-omap2/ssi.c b/arch/arm/mach-omap2/ssi.c
> > new file mode 100644
> > index 0000000..e822a77
> > --- /dev/null
> > +++ b/arch/arm/mach-omap2/ssi.c
> > @@ -0,0 +1,134 @@
> > +/*
> > + * linux/arch/arm/mach-omap2/ssi.c
>
> Minor: Please don't include filenames in the comments. Files tend to move
> around and these comments don't get updated.

Yep. I'll remove this from all the comments.

>
> > + * Copyright (C) 2010 Nokia Corporation. All rights reserved.
> > + *
> > + * Contact: Carlos Chinea <carlos.chinea@xxxxxxxxx>
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License
> > + * version 2 as published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful, but
> > + * WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > + * General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU General Public License
> > + * along with this program; if not, write to the Free Software
> > + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
> > + * 02110-1301 USA
> > + */
-- cut --

> > +static struct platform_device ssi_pdev = {
> > + .name = "omap_ssi",
> > + .id = 0,
> > + .num_resources = ARRAY_SIZE(ssi_resources),
> > + .resource = ssi_resources,
> > + .dev = {
> > + .platform_data = &ssi_pdata,
> > + },
> > +};
>
> omap_hwmod has all the base address and IRQ data, will construct the
> struct resources and the platform_devices for you. Please use
> omap_hwmod + omap_device for this part of the code.
>

Yes, it is already in my TODO list ;)

Thanks,
Carlos


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