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x86, intel-mid: Add Merrifield platform support

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This code was partially based on Mark Brown's previous work.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Link: http://lkml.kernel.org/r/1387224459-25746-4-git-send-email-david.a.cohen@linux.intel.com
Signed-off-by: Fei Yang <fei.yang@intel.com>
Cc: Mark F. Brown <mark.f.brown@intel.com>
Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
David Cohen
2013-12-16 12:07:38 -08:00
committed by H. Peter Anvin
parent 85611e3feb
commit bc20aa48bb
7 changed files with 144 additions and 8 deletions
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34
arch/x86/platform/intel-mid/sfi.c
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@@ -443,13 +443,35 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
* so we have to enable them one by one here
*/
ioapic = mp_find_ioapic(irq);
irq_attr.ioapic = ioapic;
irq_attr.ioapic_pin = irq;
irq_attr.trigger = 1;
irq_attr.polarity = 1;
io_apic_set_pci_routing(NULL, irq, &irq_attr);
} else
if (ioapic >= 0) {
irq_attr.ioapic = ioapic;
irq_attr.ioapic_pin = irq;
irq_attr.trigger = 1;
if (intel_mid_identify_cpu() ==
INTEL_MID_CPU_CHIP_TANGIER) {
if (!strncmp(pentry->name,
"r69001-ts-i2c", 13))
/* active low */
irq_attr.polarity = 1;
else if (!strncmp(pentry->name,
"synaptics_3202", 14))
/* active low */
irq_attr.polarity = 1;
else if (irq == 41)
/* fast_int_1 */
irq_attr.polarity = 1;
else
/* active high */
irq_attr.polarity = 0;
} else {
/* PNW and CLV go with active low */
irq_attr.polarity = 1;
}
io_apic_set_pci_routing(NULL, irq, &irq_attr);
}
} else {
irq = 0; /* No irq */
}
dev = get_device_id(pentry->type, pentry->name);