diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/platform/ce4100/ce4100.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/platform/ce4100/ce4100.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/ANDROID_3.4.5/arch/x86/platform/ce4100/ce4100.c b/ANDROID_3.4.5/arch/x86/platform/ce4100/ce4100.c deleted file mode 100644 index 4c61b521..00000000 --- a/ANDROID_3.4.5/arch/x86/platform/ce4100/ce4100.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * Intel CE4100 platform specific setup code - * - * (C) Copyright 2010 Intel Corporation - * - * 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/kernel.h> -#include <linux/irq.h> -#include <linux/module.h> -#include <linux/serial_reg.h> -#include <linux/serial_8250.h> - -#include <asm/ce4100.h> -#include <asm/prom.h> -#include <asm/setup.h> -#include <asm/i8259.h> -#include <asm/io.h> -#include <asm/io_apic.h> - -static int ce4100_i8042_detect(void) -{ - return 0; -} - -#ifdef CONFIG_SERIAL_8250 - -static unsigned int mem_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - return readl(p->membase + offset); -} - -/* - * The UART Tx interrupts are not set under some conditions and therefore serial - * transmission hangs. This is a silicon issue and has not been root caused. The - * workaround for this silicon issue checks UART_LSR_THRE bit and UART_LSR_TEMT - * bit of LSR register in interrupt handler to see whether at least one of these - * two bits is set, if so then process the transmit request. If this workaround - * is not applied, then the serial transmission may hang. This workaround is for - * errata number 9 in Errata - B step. -*/ - -static unsigned int ce4100_mem_serial_in(struct uart_port *p, int offset) -{ - unsigned int ret, ier, lsr; - - if (offset == UART_IIR) { - offset = offset << p->regshift; - ret = readl(p->membase + offset); - if (ret & UART_IIR_NO_INT) { - /* see if the TX interrupt should have really set */ - ier = mem_serial_in(p, UART_IER); - /* see if the UART's XMIT interrupt is enabled */ - if (ier & UART_IER_THRI) { - lsr = mem_serial_in(p, UART_LSR); - /* now check to see if the UART should be - generating an interrupt (but isn't) */ - if (lsr & (UART_LSR_THRE | UART_LSR_TEMT)) - ret &= ~UART_IIR_NO_INT; - } - } - } else - ret = mem_serial_in(p, offset); - return ret; -} - -static void ce4100_mem_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - writel(value, p->membase + offset); -} - -static void ce4100_serial_fixup(int port, struct uart_port *up, - unsigned short *capabilites) -{ -#ifdef CONFIG_EARLY_PRINTK - /* - * Over ride the legacy port configuration that comes from - * asm/serial.h. Using the ioport driver then switching to the - * PCI memmaped driver hangs the IOAPIC - */ - if (up->iotype != UPIO_MEM32) { - up->uartclk = 14745600; - up->mapbase = 0xdffe0200; - set_fixmap_nocache(FIX_EARLYCON_MEM_BASE, - up->mapbase & PAGE_MASK); - up->membase = - (void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE); - up->membase += up->mapbase & ~PAGE_MASK; - up->iotype = UPIO_MEM32; - up->regshift = 2; - } -#endif - up->iobase = 0; - up->serial_in = ce4100_mem_serial_in; - up->serial_out = ce4100_mem_serial_out; - - *capabilites |= (1 << 12); -} - -static __init void sdv_serial_fixup(void) -{ - serial8250_set_isa_configurator(ce4100_serial_fixup); -} - -#else -static inline void sdv_serial_fixup(void) {}; -#endif - -static void __init sdv_arch_setup(void) -{ - sdv_serial_fixup(); -} - -#ifdef CONFIG_X86_IO_APIC -static void __cpuinit sdv_pci_init(void) -{ - x86_of_pci_init(); - /* We can't set this earlier, because we need to calibrate the timer */ - legacy_pic = &null_legacy_pic; -} -#endif - -/* - * CE4100 specific x86_init function overrides and early setup - * calls. - */ -void __init x86_ce4100_early_setup(void) -{ - x86_init.oem.arch_setup = sdv_arch_setup; - x86_platform.i8042_detect = ce4100_i8042_detect; - x86_init.resources.probe_roms = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.pci.init = ce4100_pci_init; - -#ifdef CONFIG_X86_IO_APIC - x86_init.pci.init_irq = sdv_pci_init; - x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck; -#endif -} |