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SubjectRe: [PATCH v4 2/2] x86: intel-mid: add watchdog platform code for Merrifield
On Tue, Apr 15, 2014 at 01:09:00PM -0700, David Cohen wrote:
> On Tue, Apr 15, 2014 at 01:06:06PM -0700, David Cohen wrote:
> > This patch adds platform code for Intel Merrifield.
> > Since the watchdog is not part of SFI table, we have no other option but
> > to manually register watchdog's platform device (argh!).
> >
> > Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
> > ---
> > arch/x86/platform/intel-mid/device_libs/Makefile | 1 +
> > .../platform/intel-mid/device_libs/platform_wdt.c | 66 ++++++++++++++++++++++
> > 2 files changed, 67 insertions(+)
> > create mode 100644 arch/x86/platform/intel-mid/device_libs/platform_wdt.c
> >
> > diff --git a/arch/x86/platform/intel-mid/device_libs/Makefile b/arch/x86/platform/intel-mid/device_libs/Makefile
> > index 097e7a7940d8..af9307f2cc28 100644
> > --- a/arch/x86/platform/intel-mid/device_libs/Makefile
> > +++ b/arch/x86/platform/intel-mid/device_libs/Makefile
> > @@ -20,3 +20,4 @@ obj-$(subst m,y,$(CONFIG_DRM_MEDFIELD)) += platform_tc35876x.o
> > obj-$(subst m,y,$(CONFIG_SERIAL_MRST_MAX3110)) += platform_max3111.o
> > # MISC Devices
> > obj-$(subst m,y,$(CONFIG_KEYBOARD_GPIO)) += platform_gpio_keys.o
> > +obj-$(subst m,y,$(CONFIG_INTEL_MID_WATCHDOG)) += platform_wdt.o
> > diff --git a/arch/x86/platform/intel-mid/device_libs/platform_wdt.c b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c
> > new file mode 100644
> > index 000000000000..4b0434b54aff
> > --- /dev/null
> > +++ b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c
> > @@ -0,0 +1,66 @@
> > +/*
> > + * platform_wdt.c: Watchdog platform library file
> > + *
> > + * (C) Copyright 2014 Intel Corporation
> > + * Author: David Cohen <david.a.cohen@linux.intel.com>
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License
> > + * as published by the Free Software Foundation; version 2
> > + * of the License.
> > + */
> > +
> > +#include <linux/init.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/platform_data/intel-mid_wdt.h>
> > +#include <asm/intel-mid.h>
> > +
> > +#define TANGIER_EXT_TIMER0_MSI 15
> > +
> > +static struct platform_device wdt_dev = {
> > + .name = "intel_mid_wdt",
> > + .id = -1,
> > +};
> > +
> > +static int tangier_probe(struct platform_device *pdev)
> > +{
> > + int ioapic;
> > + struct io_apic_irq_attr irq_attr = { 0 };
> > +
> > + ioapic = mp_find_ioapic(TANGIER_EXT_TIMER0_MSI);
>
> Forgot remove this hardcoded irq number. I'll send v4.1 of this patch.
>
> BR, David
>
> > + if (ioapic >= 0) {
> > + int ret;
> > + irq_attr.ioapic = ioapic;
> > + irq_attr.ioapic_pin = TANGIER_EXT_TIMER0_MSI;
> > + irq_attr.trigger = 1;
> > + irq_attr.polarity = 0; /* Active high */
> > + ret = io_apic_set_pci_routing(NULL, TANGIER_EXT_TIMER0_MSI,
> > + &irq_attr);

Here is another one, just in case you missed it.

Guenter


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