diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/simatic-ipc.c | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/drivers/platform/x86/simatic-ipc.c b/drivers/platform/x86/simatic-ipc.c index b599cda5ba3c..26c35e1660cb 100644 --- a/drivers/platform/x86/simatic-ipc.c +++ b/drivers/platform/x86/simatic-ipc.c @@ -101,44 +101,6 @@ static int register_platform_devices(u32 station_id) return 0; } -/* FIXME: this should eventually be done with generic P2SB discovery code - * the individual drivers for watchdogs and LEDs access memory that implements - * GPIO, but pinctrl will not come up because of missing ACPI entries - * - * While there is no conflict a cleaner solution would be to somehow bring up - * pinctrl even with these ACPI entries missing, and base the drivers on pinctrl. - * After which the following function could be dropped, together with the code - * poking the memory. - */ -/* - * Get membase address from PCI, used in leds and wdt module. Here we read - * the bar0. The final address calculation is done in the appropriate modules - */ -u32 simatic_ipc_get_membase0(unsigned int p2sb) -{ - struct pci_bus *bus; - u32 bar0 = 0; - /* - * The GPIO memory is in bar0 of the hidden P2SB device. - * Unhide the device to have a quick look at it, before we hide it - * again. - * Also grab the pci rescan lock so that device does not get discovered - * and remapped while it is visible. - * This code is inspired by drivers/mfd/lpc_ich.c - */ - bus = pci_find_bus(0, 0); - pci_lock_rescan_remove(); - pci_bus_write_config_byte(bus, p2sb, 0xE1, 0x0); - pci_bus_read_config_dword(bus, p2sb, PCI_BASE_ADDRESS_0, &bar0); - - bar0 &= ~0xf; - pci_bus_write_config_byte(bus, p2sb, 0xE1, 0x1); - pci_unlock_rescan_remove(); - - return bar0; -} -EXPORT_SYMBOL(simatic_ipc_get_membase0); - static int __init simatic_ipc_init_module(void) { const struct dmi_system_id *match; |