linux-kernel - Re: [PATCH v3] OMAP1: AMS

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Date:	Mon, 10 Aug 2009 10:39:24 +0100
From:	Jonathan McDowell <noodles@...th.li>
To:	Janusz Krzysztofik <jkrzyszt@....icnet.pl>
Cc:	Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org,
	linux-serial@...r.kernel.org,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] OMAP1: AMS_DELTA: add modem support

On Mon, Aug 10, 2009 at 11:12:48AM +0200, Janusz Krzysztofik wrote:
> Jonathan, Tony,
> 
> Any chance for this patch ready for 2.6.32 inclusion? Or maybe v2,
> that has no external dependencies and can be updated later to v3 when
> Vikram's changes get accepted upstream?

Vikram's patch is in linux-next, so there shouldn't be a problem with
this version of your patch for 2.6.32. I haven't been able to test it
myself (though I hope to next week), but it looks ok from a brief
inspection, so:

Acked-By: Jonathan McDowell <noodles@...th.li>
 
> Monday 06 July 2009 12:24:27 Janusz Krzysztofik wrote:
> > This patch adds support for modem device found on Amstrad E3 (Delta) board.
> >
> > Based on earlier patch by Jonathan McDowell, available at
> > http://the.earth.li/pub/e3/2.6.19/ams-delta-modem.patch.
> > Modified after Ladislav Michl's arch/arm/mach-omap1/board-voiceblue.c.
> >
> > This version, unlike v2, is dependent on 8250 driver changes getting
> > accepted upstream:
> > Refer: http://patchwork.kernel.org/patch/31884/
> >
> > Signed-off-by: Janusz Krzysztofik <jkrzyszt@....icnet.pl>
> > ---
> > Registering the modem platform device from a separate arch_initcall (and
> > not from init_machine() callback) preserves serial console port at ttyS0.
> >
> > OMAP mux pin set up just for case if Amstrad bootloader is ever replaced.
> >
> > Warning:
> > could cause compilation break if 8250 patch is not integrated first
> >
> > --- linux-2.6.31-rc1/arch/arm/mach-omap1/board-ams-delta.c.orig	2009-07-04
> > 16:39:37.000000000 +0200 +++
> > linux-2.6.31-rc1/arch/arm/mach-omap1/board-ams-delta.c	2009-07-05
> > 13:41:08.000000000 +0200 @@ -15,8 +15,11 @@
> >  #include <linux/kernel.h>
> >  #include <linux/init.h>
> >  #include <linux/input.h>
> > +#include <linux/interrupt.h>
> >  #include <linux/platform_device.h>
> > +#include <linux/serial_8250.h>
> >
> > +#include <asm/serial.h>
> >  #include <mach/hardware.h>
> >  #include <asm/mach-types.h>
> >  #include <asm/mach/arch.h>
> > @@ -235,6 +238,41 @@ static void __init ams_delta_init(void)
> >  	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
> >  }
> >
> > +static struct plat_serial8250_port ams_delta_modem_ports[] = {
> > +	{
> > +		.membase	= (void *) AMS_DELTA_MODEM_VIRT,
> > +		.mapbase	= AMS_DELTA_MODEM_PHYS,
> > +		.irq		= -EINVAL, /* changed later */
> > +		.flags		= UPF_BOOT_AUTOCONF,
> > +		.irqflags	= IRQF_TRIGGER_RISING,
> > +		.iotype		= UPIO_MEM,
> > +		.regshift	= 1,
> > +		.uartclk	= BASE_BAUD * 16,
> > +	},
> > +	{ },
> > +};
> > +
> > +static struct platform_device ams_delta_modem_device = {
> > +	.name	= "serial8250",
> > +	.id	= PLAT8250_DEV_PLATFORM1,
> > +	.dev		= {
> > +		.platform_data = ams_delta_modem_ports,
> > +	},
> > +};
> > +
> > +static int __init ams_delta_modem_init(void)
> > +{
> > +	omap_cfg_reg(M14_1510_GPIO2);
> > +	ams_delta_modem_ports[0].irq = gpio_to_irq(2);
> > +
> > +	ams_delta_latch2_write(
> > +		AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC,
> > +		AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC);
> > +
> > +	return platform_device_register(&ams_delta_modem_device);
> > +}
> > +arch_initcall(ams_delta_modem_init);
> > +
> >  static void __init ams_delta_map_io(void)
> >  {
> >  	omap1_map_common_io();
> 
> 

J.

-- 
Revd. Jonathan McDowell, ULC | I am a passenger.
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