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mfd: Add tunnelcreek watchdog to lpc_sch devices

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Tunnel Creek has an additional watchdog core.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Alexander Stein 2011-06-16 13:05:49 +02:00 committed by Samuel Ortiz
parent 0a1b089738
commit 19921ef612
1 changed files with 48 additions and 1 deletions
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49
drivers/mfd/lpc_sch.c
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@ -37,6 +37,9 @@
#define GPIOBASE 0x44 #define GPIOBASE 0x44
#define GPIO_IO_SIZE 64 #define GPIO_IO_SIZE 64
#define WDTBASE 0x84
#define WDT_IO_SIZE 64
static struct resource smbus_sch_resource = { static struct resource smbus_sch_resource = {
.flags = IORESOURCE_IO, .flags = IORESOURCE_IO,
}; };
@ -59,6 +62,18 @@ static struct mfd_cell lpc_sch_cells[] = {
}, },
}; };
static struct resource wdt_sch_resource = {
.flags = IORESOURCE_IO,
};
static struct mfd_cell tunnelcreek_cells[] = {
{
.name = "tunnelcreek_wdt",
.num_resources = 1,
.resources = &wdt_sch_resource,
},
};
static struct pci_device_id lpc_sch_ids[] = { static struct pci_device_id lpc_sch_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ITC_LPC) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ITC_LPC) },
@ -72,6 +87,7 @@ static int __devinit lpc_sch_probe(struct pci_dev *dev,
unsigned int base_addr_cfg; unsigned int base_addr_cfg;
unsigned short base_addr; unsigned short base_addr;
int i; int i;
int ret;
pci_read_config_dword(dev, SMBASE, &base_addr_cfg); pci_read_config_dword(dev, SMBASE, &base_addr_cfg);
if (!(base_addr_cfg & (1 << 31))) { if (!(base_addr_cfg & (1 << 31))) {
@ -104,8 +120,39 @@ static int __devinit lpc_sch_probe(struct pci_dev *dev,
for (i=0; i < ARRAY_SIZE(lpc_sch_cells); i++) for (i=0; i < ARRAY_SIZE(lpc_sch_cells); i++)
lpc_sch_cells[i].id = id->device; lpc_sch_cells[i].id = id->device;
return mfd_add_devices(&dev->dev, 0, ret = mfd_add_devices(&dev->dev, 0,
lpc_sch_cells, ARRAY_SIZE(lpc_sch_cells), NULL, 0); lpc_sch_cells, ARRAY_SIZE(lpc_sch_cells), NULL, 0);
if (ret)
goto out_dev;
if (id->device == PCI_DEVICE_ID_INTEL_ITC_LPC) {
pci_read_config_dword(dev, WDTBASE, &base_addr_cfg);
if (!(base_addr_cfg & (1 << 31))) {
dev_err(&dev->dev, "Decode of the WDT I/O range disabled\n");
ret = -ENODEV;
goto out_dev;
}
base_addr = (unsigned short)base_addr_cfg;
if (base_addr == 0) {
dev_err(&dev->dev, "I/O space for WDT uninitialized\n");
ret = -ENODEV;
goto out_dev;
}
wdt_sch_resource.start = base_addr;
wdt_sch_resource.end = base_addr + WDT_IO_SIZE - 1;
for (i = 0; i < ARRAY_SIZE(tunnelcreek_cells); i++)
tunnelcreek_cells[i].id = id->device;
ret = mfd_add_devices(&dev->dev, 0, tunnelcreek_cells,
ARRAY_SIZE(tunnelcreek_cells), NULL, 0);
}
return ret;
out_dev:
mfd_remove_devices(&dev->dev);
return ret;
} }
static void __devexit lpc_sch_remove(struct pci_dev *dev) static void __devexit lpc_sch_remove(struct pci_dev *dev)