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path: root/drivers/mfd/lpc_sch.c
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Diffstat (limited to 'drivers/mfd/lpc_sch.c')
-rw-r--r--drivers/mfd/lpc_sch.c147
1 files changed, 71 insertions, 76 deletions
diff --git a/drivers/mfd/lpc_sch.c b/drivers/mfd/lpc_sch.c
index 5624fcbba69b..8cc6aac27cb2 100644
--- a/drivers/mfd/lpc_sch.c
+++ b/drivers/mfd/lpc_sch.c
@@ -45,34 +45,32 @@ static struct resource smbus_sch_resource = {
.flags = IORESOURCE_IO,
};
-
static struct resource gpio_sch_resource = {
.flags = IORESOURCE_IO,
};
-static struct mfd_cell lpc_sch_cells[] = {
- {
- .name = "isch_smbus",
- .num_resources = 1,
- .resources = &smbus_sch_resource,
- },
- {
- .name = "sch_gpio",
- .num_resources = 1,
- .resources = &gpio_sch_resource,
- },
-};
-
static struct resource wdt_sch_resource = {
.flags = IORESOURCE_IO,
};
-static struct mfd_cell tunnelcreek_cells[] = {
- {
- .name = "ie6xx_wdt",
- .num_resources = 1,
- .resources = &wdt_sch_resource,
- },
+static struct mfd_cell lpc_sch_cells[3];
+
+static struct mfd_cell isch_smbus_cell = {
+ .name = "isch_smbus",
+ .num_resources = 1,
+ .resources = &smbus_sch_resource,
+};
+
+static struct mfd_cell sch_gpio_cell = {
+ .name = "sch_gpio",
+ .num_resources = 1,
+ .resources = &gpio_sch_resource,
+};
+
+static struct mfd_cell wdt_sch_cell = {
+ .name = "ie6xx_wdt",
+ .num_resources = 1,
+ .resources = &wdt_sch_resource,
};
static DEFINE_PCI_DEVICE_TABLE(lpc_sch_ids) = {
@@ -88,79 +86,76 @@ static int lpc_sch_probe(struct pci_dev *dev,
{
unsigned int base_addr_cfg;
unsigned short base_addr;
- int i;
+ int i, cells = 0;
int ret;
pci_read_config_dword(dev, SMBASE, &base_addr_cfg);
- if (!(base_addr_cfg & (1 << 31))) {
- dev_err(&dev->dev, "Decode of the SMBus I/O range disabled\n");
- return -ENODEV;
- }
- base_addr = (unsigned short)base_addr_cfg;
- if (base_addr == 0) {
- dev_err(&dev->dev, "I/O space for SMBus uninitialized\n");
- return -ENODEV;
- }
-
- smbus_sch_resource.start = base_addr;
- smbus_sch_resource.end = base_addr + SMBUS_IO_SIZE - 1;
+ base_addr = 0;
+ if (!(base_addr_cfg & (1 << 31)))
+ dev_warn(&dev->dev, "Decode of the SMBus I/O range disabled\n");
+ else
+ base_addr = (unsigned short)base_addr_cfg;
- pci_read_config_dword(dev, GPIOBASE, &base_addr_cfg);
- if (!(base_addr_cfg & (1 << 31))) {
- dev_err(&dev->dev, "Decode of the GPIO I/O range disabled\n");
- return -ENODEV;
- }
- base_addr = (unsigned short)base_addr_cfg;
if (base_addr == 0) {
- dev_err(&dev->dev, "I/O space for GPIO uninitialized\n");
- return -ENODEV;
+ dev_warn(&dev->dev, "I/O space for SMBus uninitialized\n");
+ } else {
+ lpc_sch_cells[cells++] = isch_smbus_cell;
+ smbus_sch_resource.start = base_addr;
+ smbus_sch_resource.end = base_addr + SMBUS_IO_SIZE - 1;
}
- gpio_sch_resource.start = base_addr;
-
- if (id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB)
- gpio_sch_resource.end = base_addr + GPIO_IO_SIZE_CENTERTON - 1;
+ pci_read_config_dword(dev, GPIOBASE, &base_addr_cfg);
+ base_addr = 0;
+ if (!(base_addr_cfg & (1 << 31)))
+ dev_warn(&dev->dev, "Decode of the GPIO I/O range disabled\n");
else
- gpio_sch_resource.end = base_addr + GPIO_IO_SIZE - 1;
-
- for (i=0; i < ARRAY_SIZE(lpc_sch_cells); i++)
- lpc_sch_cells[i].id = id->device;
+ base_addr = (unsigned short)base_addr_cfg;
- ret = mfd_add_devices(&dev->dev, 0,
- lpc_sch_cells, ARRAY_SIZE(lpc_sch_cells), NULL,
- 0, NULL);
- if (ret)
- goto out_dev;
+ if (base_addr == 0) {
+ dev_warn(&dev->dev, "I/O space for GPIO uninitialized\n");
+ } else {
+ lpc_sch_cells[cells++] = sch_gpio_cell;
+ gpio_sch_resource.start = base_addr;
+ if (id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB)
+ gpio_sch_resource.end = base_addr + GPIO_IO_SIZE_CENTERTON - 1;
+ else
+ gpio_sch_resource.end = base_addr + GPIO_IO_SIZE - 1;
+ }
if (id->device == PCI_DEVICE_ID_INTEL_ITC_LPC
- || id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB) {
+ || id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB) {
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 = 0;
+ if (!(base_addr_cfg & (1 << 31)))
+ dev_warn(&dev->dev, "Decode of the WDT I/O range disabled\n");
+ else
+ base_addr = (unsigned short)base_addr_cfg;
+ if (base_addr == 0)
+ dev_warn(&dev->dev, "I/O space for WDT uninitialized\n");
+ else {
+ lpc_sch_cells[cells++] = wdt_sch_cell;
+ wdt_sch_resource.start = base_addr;
+ wdt_sch_resource.end = base_addr + WDT_IO_SIZE - 1;
}
- 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;
+ if (WARN_ON(cells > ARRAY_SIZE(lpc_sch_cells))) {
+ dev_err(&dev->dev, "Cell count exceeds array size");
+ return -ENODEV;
+ }
- ret = mfd_add_devices(&dev->dev, 0, tunnelcreek_cells,
- ARRAY_SIZE(tunnelcreek_cells), NULL,
- 0, NULL);
+ if (cells == 0) {
+ dev_err(&dev->dev, "All decode registers disabled.\n");
+ return -ENODEV;
}
- return ret;
-out_dev:
- mfd_remove_devices(&dev->dev);
+ for (i = 0; i < cells; i++)
+ lpc_sch_cells[i].id = id->device;
+
+ ret = mfd_add_devices(&dev->dev, 0, lpc_sch_cells, cells, NULL, 0, NULL);
+ if (ret)
+ mfd_remove_devices(&dev->dev);
+
return ret;
}
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