forked from luck/tmp_suning_uos_patched
[ARM] 5473/1: U300 core machine support
This adds core support for the ST-Ericsson U300 series platforms: U300, U330, U335 and U365. Supports memory mappings, interrupt controller, system timer (clocksource and clockevents), and binds to the existing drivers for the PrimeCells used in this design: PL190 (VIC), PL180 (MMC/SD host) and PL011 (UART). This is intented to serve as starting point for our mainling work, more patches to follow. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij
Russell King
parent
cd27e48541
commit
bb3cee2b35
105
arch/arm/mach-u300/Kconfig
Normal file
105
arch/arm/mach-u300/Kconfig
Normal file
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@ -0,0 +1,105 @@
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if ARCH_U300
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menu "ST-Ericsson AB U300/U330/U335/U365 Platform"
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comment "ST-Ericsson Mobile Platform Products"
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config MACH_U300
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bool "U300"
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comment "ST-Ericsson U300/U330/U335/U365 Feature Selections"
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choice
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prompt "U300/U330/U335/U365 system type"
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default MACH_U300_BS2X
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---help---
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You need to select the target system, i.e. the
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U300/U330/U335/U365 board that you want to compile your kernel
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for.
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config MACH_U300_BS2X
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bool "S26/S26/B25/B26 Test Products"
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depends on MACH_U300
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help
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Select this if you're developing on the
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S26/S25 test products. (Also works on
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B26/B25 big boards.)
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config MACH_U300_BS330
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bool "S330/B330 Test Products"
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depends on MACH_U300
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help
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Select this if you're developing on the
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S330/B330 test products.
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config MACH_U300_BS335
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bool "S335/B335 Test Products"
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depends on MACH_U300
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help
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Select this if you're developing on the
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S335/B335 test products.
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config MACH_U300_BS365
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bool "S365/B365 Test Products"
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depends on MACH_U300
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help
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Select this if you're developing on the
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S365/B365 test products.
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endchoice
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choice
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prompt "Memory configuration"
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default MACH_U300_SINGLE_RAM
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---help---
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You have to config the kernel according to the physical memory
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configuration.
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config MACH_U300_SINGLE_RAM
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bool "Single RAM"
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help
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Select this if you want support for Single RAM phones.
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config MACH_U300_DUAL_RAM
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bool "Dual RAM"
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help
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Select this if you want support for Dual RAM phones.
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This is two RAM memorys on different EMIFs.
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endchoice
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config U300_DEBUG
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bool "Debug support for U300"
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depends on PM
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help
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Debug support for U300 in sysfs, procfs etc.
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config MACH_U300_SEMI_IS_SHARED
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bool "The SEMI is used by both the access and application side"
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depends on MACH_U300
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help
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This makes it possible to use the SEMI (Shared External
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Memory Interface) from both from access and application
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side.
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comment "All the settings below must match the bootloader's settings"
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config MACH_U300_ACCESS_MEM_SIZE
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int "Access CPU memory allocation"
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range 7 25
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depends on MACH_U300_SINGLE_RAM
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default 13
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help
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How much memory in MiB that the Access side CPU has allocated
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config MACH_U300_2MB_ALIGNMENT_FIX
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bool "2MiB alignment fix"
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depends on MACH_U300_SINGLE_RAM
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default y
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help
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If yes and the Access side CPU has allocated an odd size in
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MiB, this fix gives you one MiB extra that would otherwise be
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lost due to Linux 2 MiB alignment policy.
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endmenu
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endif
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11
arch/arm/mach-u300/Makefile
Normal file
11
arch/arm/mach-u300/Makefile
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@ -0,0 +1,11 @@
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#
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# Makefile for the linux kernel, U300 machine.
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#
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obj-y := core.o clock.o timer.o gpio.o padmux.o
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obj-m :=
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obj-n :=
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obj- :=
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obj-$(CONFIG_ARCH_U300) += u300.o
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obj-$(CONFIG_MMC) += mmc.o
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649
arch/arm/mach-u300/core.c
Normal file
649
arch/arm/mach-u300/core.c
Normal file
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@ -0,0 +1,649 @@
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/*
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*
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* arch/arm/mach-u300/core.c
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*
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*
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* Copyright (C) 2007-2009 ST-Ericsson AB
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* License terms: GNU General Public License (GPL) version 2
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* Core platform support, IRQ handling and device definitions.
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* Author: Linus Walleij <linus.walleij@stericsson.com>
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/bitops.h>
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#include <linux/device.h>
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#include <linux/mm.h>
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#include <linux/termios.h>
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#include <linux/amba/bus.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <asm/types.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <asm/hardware/vic.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/hardware.h>
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#include <mach/syscon.h>
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#include "clock.h"
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#include "mmc.h"
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/*
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* Static I/O mappings that are needed for booting the U300 platforms. The
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* only things we need are the areas where we find the timer, syscon and
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* intcon, since the remaining device drivers will map their own memory
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* physical to virtual as the need arise.
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*/
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static struct map_desc u300_io_desc[] __initdata = {
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{
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.virtual = U300_SLOW_PER_VIRT_BASE,
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.pfn = __phys_to_pfn(U300_SLOW_PER_PHYS_BASE),
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.length = SZ_64K,
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.type = MT_DEVICE,
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},
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{
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.virtual = U300_AHB_PER_VIRT_BASE,
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.pfn = __phys_to_pfn(U300_AHB_PER_PHYS_BASE),
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.length = SZ_32K,
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.type = MT_DEVICE,
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},
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{
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.virtual = U300_FAST_PER_VIRT_BASE,
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.pfn = __phys_to_pfn(U300_FAST_PER_PHYS_BASE),
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.length = SZ_32K,
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.type = MT_DEVICE,
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},
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{
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.virtual = 0xffff2000, /* TCM memory */
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.pfn = __phys_to_pfn(0xffff2000),
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.length = SZ_16K,
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.type = MT_DEVICE,
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},
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/*
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* This overlaps with the IRQ vectors etc at 0xffff0000, so these
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* may have to be moved to 0x00000000 in order to use the ROM.
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*/
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/*
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{
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.virtual = U300_BOOTROM_VIRT_BASE,
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.pfn = __phys_to_pfn(U300_BOOTROM_PHYS_BASE),
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.length = SZ_64K,
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.type = MT_ROM,
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},
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*/
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};
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void __init u300_map_io(void)
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{
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iotable_init(u300_io_desc, ARRAY_SIZE(u300_io_desc));
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}
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/*
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* Declaration of devices found on the U300 board and
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* their respective memory locations.
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*/
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static struct amba_device uart0_device = {
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.dev = {
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.init_name = "uart0", /* Slow device at 0x3000 offset */
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.platform_data = NULL,
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},
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.res = {
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.start = U300_UART0_BASE,
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.end = U300_UART0_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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.irq = { IRQ_U300_UART0, NO_IRQ },
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};
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/* The U335 have an additional UART1 on the APP CPU */
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#ifdef CONFIG_MACH_U300_BS335
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static struct amba_device uart1_device = {
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.dev = {
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.init_name = "uart1", /* Fast device at 0x7000 offset */
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.platform_data = NULL,
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},
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.res = {
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.start = U300_UART1_BASE,
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.end = U300_UART1_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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.irq = { IRQ_U300_UART1, NO_IRQ },
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};
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#endif
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static struct amba_device pl172_device = {
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.dev = {
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.init_name = "pl172", /* AHB device at 0x4000 offset */
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.platform_data = NULL,
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},
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.res = {
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.start = U300_EMIF_CFG_BASE,
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.end = U300_EMIF_CFG_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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/*
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* Everything within this next ifdef deals with external devices connected to
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* the APP SPI bus.
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*/
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static struct amba_device pl022_device = {
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.dev = {
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.coherent_dma_mask = ~0,
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.init_name = "pl022", /* Fast device at 0x6000 offset */
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},
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.res = {
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.start = U300_SPI_BASE,
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.end = U300_SPI_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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.irq = {IRQ_U300_SPI, NO_IRQ },
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/*
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* This device has a DMA channel but the Linux driver does not use
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* it currently.
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*/
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};
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static struct amba_device mmcsd_device = {
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.dev = {
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.init_name = "mmci", /* Fast device at 0x1000 offset */
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.platform_data = NULL, /* Added later */
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},
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.res = {
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.start = U300_MMCSD_BASE,
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.end = U300_MMCSD_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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.irq = {IRQ_U300_MMCSD_MCIINTR0, IRQ_U300_MMCSD_MCIINTR1 },
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/*
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* This device has a DMA channel but the Linux driver does not use
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* it currently.
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*/
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};
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/*
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* The order of device declaration may be important, since some devices
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* have dependencies on other devices being initialized first.
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*/
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static struct amba_device *amba_devs[] __initdata = {
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&uart0_device,
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#ifdef CONFIG_MACH_U300_BS335
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&uart1_device,
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#endif
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&pl022_device,
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&pl172_device,
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&mmcsd_device,
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};
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/* Here follows a list of all hw resources that the platform devices
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* allocate. Note, clock dependencies are not included
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*/
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static struct resource gpio_resources[] = {
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{
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.start = U300_GPIO_BASE,
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.end = (U300_GPIO_BASE + SZ_4K - 1),
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "gpio0",
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.start = IRQ_U300_GPIO_PORT0,
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.end = IRQ_U300_GPIO_PORT0,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "gpio1",
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.start = IRQ_U300_GPIO_PORT1,
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.end = IRQ_U300_GPIO_PORT1,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "gpio2",
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.start = IRQ_U300_GPIO_PORT2,
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.end = IRQ_U300_GPIO_PORT2,
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.flags = IORESOURCE_IRQ,
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},
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#ifdef U300_COH901571_3
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{
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.name = "gpio3",
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.start = IRQ_U300_GPIO_PORT3,
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.end = IRQ_U300_GPIO_PORT3,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "gpio4",
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.start = IRQ_U300_GPIO_PORT4,
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.end = IRQ_U300_GPIO_PORT4,
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.flags = IORESOURCE_IRQ,
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},
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#ifdef CONFIG_MACH_U300_BS335
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{
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.name = "gpio5",
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.start = IRQ_U300_GPIO_PORT5,
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.end = IRQ_U300_GPIO_PORT5,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "gpio6",
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.start = IRQ_U300_GPIO_PORT6,
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.end = IRQ_U300_GPIO_PORT6,
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.flags = IORESOURCE_IRQ,
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},
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#endif /* CONFIG_MACH_U300_BS335 */
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#endif /* U300_COH901571_3 */
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};
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static struct resource keypad_resources[] = {
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{
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.start = U300_KEYPAD_BASE,
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.end = U300_KEYPAD_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "coh901461-press",
|
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.start = IRQ_U300_KEYPAD_KEYBF,
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.end = IRQ_U300_KEYPAD_KEYBF,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "coh901461-release",
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.start = IRQ_U300_KEYPAD_KEYBR,
|
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.end = IRQ_U300_KEYPAD_KEYBR,
|
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.flags = IORESOURCE_IRQ,
|
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},
|
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};
|
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|
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static struct resource rtc_resources[] = {
|
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{
|
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.start = U300_RTC_BASE,
|
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.end = U300_RTC_BASE + SZ_4K - 1,
|
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.flags = IORESOURCE_MEM,
|
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},
|
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{
|
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.start = IRQ_U300_RTC,
|
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.end = IRQ_U300_RTC,
|
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.flags = IORESOURCE_IRQ,
|
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},
|
||||
};
|
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|
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/*
|
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* Fsmc does have IRQs: #43 and #44 (NFIF and NFIF2)
|
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* but these are not yet used by the driver.
|
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*/
|
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static struct resource fsmc_resources[] = {
|
||||
{
|
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.start = U300_NAND_IF_PHYS_BASE,
|
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.end = U300_NAND_IF_PHYS_BASE + SZ_4K - 1,
|
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.flags = IORESOURCE_MEM,
|
||||
},
|
||||
};
|
||||
|
||||
static struct resource i2c0_resources[] = {
|
||||
{
|
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.start = U300_I2C0_BASE,
|
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.end = U300_I2C0_BASE + SZ_4K - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
{
|
||||
.start = IRQ_U300_I2C0,
|
||||
.end = IRQ_U300_I2C0,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
};
|
||||
|
||||
static struct resource i2c1_resources[] = {
|
||||
{
|
||||
.start = U300_I2C1_BASE,
|
||||
.end = U300_I2C1_BASE + SZ_4K - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
{
|
||||
.start = IRQ_U300_I2C1,
|
||||
.end = IRQ_U300_I2C1,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
|
||||
};
|
||||
|
||||
static struct resource wdog_resources[] = {
|
||||
{
|
||||
.start = U300_WDOG_BASE,
|
||||
.end = U300_WDOG_BASE + SZ_4K - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
{
|
||||
.start = IRQ_U300_WDOG,
|
||||
.end = IRQ_U300_WDOG,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
}
|
||||
};
|
||||
|
||||
/* TODO: These should be protected by suitable #ifdef's */
|
||||
static struct resource ave_resources[] = {
|
||||
{
|
||||
.name = "AVE3e I/O Area",
|
||||
.start = U300_VIDEOENC_BASE,
|
||||
.end = U300_VIDEOENC_BASE + SZ_512K - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
{
|
||||
.name = "AVE3e IRQ0",
|
||||
.start = IRQ_U300_VIDEO_ENC_0,
|
||||
.end = IRQ_U300_VIDEO_ENC_0,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
{
|
||||
.name = "AVE3e IRQ1",
|
||||
.start = IRQ_U300_VIDEO_ENC_1,
|
||||
.end = IRQ_U300_VIDEO_ENC_1,
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
{
|
||||
.name = "AVE3e Physmem Area",
|
||||
.start = 0, /* 0 will be remapped to reserved memory */
|
||||
.end = SZ_1M - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
/*
|
||||
* The AVE3e requires two regions of 256MB that it considers
|
||||
* "invisible". The hardware will not be able to access these
|
||||
* adresses, so they should never point to system RAM.
|
||||
*/
|
||||
{
|
||||
.name = "AVE3e Reserved 0",
|
||||
.start = 0xd0000000,
|
||||
.end = 0xd0000000 + SZ_256M - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
{
|
||||
.name = "AVE3e Reserved 1",
|
||||
.start = 0xe0000000,
|
||||
.end = 0xe0000000 + SZ_256M - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
};
|
||||
|
||||
static struct platform_device wdog_device = {
|
||||
.name = "wdog",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(wdog_resources),
|
||||
.resource = wdog_resources,
|
||||
};
|
||||
|
||||
static struct platform_device i2c0_device = {
|
||||
.name = "stddci2c",
|
||||
.id = 0,
|
||||
.num_resources = ARRAY_SIZE(i2c0_resources),
|
||||
.resource = i2c0_resources,
|
||||
};
|
||||
|
||||
static struct platform_device i2c1_device = {
|
||||
.name = "stddci2c",
|
||||
.id = 1,
|
||||
.num_resources = ARRAY_SIZE(i2c1_resources),
|
||||
.resource = i2c1_resources,
|
||||
};
|
||||
|
||||
static struct platform_device gpio_device = {
|
||||
.name = "u300-gpio",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(gpio_resources),
|
||||
.resource = gpio_resources,
|
||||
};
|
||||
|
||||
static struct platform_device keypad_device = {
|
||||
.name = "keypad",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(keypad_resources),
|
||||
.resource = keypad_resources,
|
||||
};
|
||||
|
||||
static struct platform_device rtc_device = {
|
||||
.name = "rtc0",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(rtc_resources),
|
||||
.resource = rtc_resources,
|
||||
};
|
||||
|
||||
static struct platform_device fsmc_device = {
|
||||
.name = "nandif",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(fsmc_resources),
|
||||
.resource = fsmc_resources,
|
||||
};
|
||||
|
||||
static struct platform_device ave_device = {
|
||||
.name = "video_enc",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(ave_resources),
|
||||
.resource = ave_resources,
|
||||
};
|
||||
|
||||
/*
|
||||
* Notice that AMBA devices are initialized before platform devices.
|
||||
*
|
||||
*/
|
||||
static struct platform_device *platform_devs[] __initdata = {
|
||||
&i2c0_device,
|
||||
&i2c1_device,
|
||||
&keypad_device,
|
||||
&rtc_device,
|
||||
&gpio_device,
|
||||
&fsmc_device,
|
||||
&wdog_device,
|
||||
&ave_device
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected
|
||||
* together so some interrupts are connected to the first one and some
|
||||
* to the second one.
|
||||
*/
|
||||
void __init u300_init_irq(void)
|
||||
{
|
||||
u32 mask[2] = {0, 0};
|
||||
int i;
|
||||
|
||||
for (i = 0; i < NR_IRQS; i++)
|
||||
set_bit(i, (unsigned long *) &mask[0]);
|
||||
u300_enable_intcon_clock();
|
||||
vic_init((void __iomem *) U300_INTCON0_VBASE, 0, mask[0]);
|
||||
vic_init((void __iomem *) U300_INTCON1_VBASE, 32, mask[1]);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* U300 platforms peripheral handling
|
||||
*/
|
||||
struct db_chip {
|
||||
u16 chipid;
|
||||
const char *name;
|
||||
};
|
||||
|
||||
/*
|
||||
* This is a list of the Digital Baseband chips used in the U300 platform.
|
||||
*/
|
||||
static struct db_chip db_chips[] __initdata = {
|
||||
{
|
||||
.chipid = 0xb800,
|
||||
.name = "DB3000",
|
||||
},
|
||||
{
|
||||
.chipid = 0xc000,
|
||||
.name = "DB3100",
|
||||
},
|
||||
{
|
||||
.chipid = 0xc800,
|
||||
.name = "DB3150",
|
||||
},
|
||||
{
|
||||
.chipid = 0xd800,
|
||||
.name = "DB3200",
|
||||
},
|
||||
{
|
||||
.chipid = 0xe000,
|
||||
.name = "DB3250",
|
||||
},
|
||||
{
|
||||
.chipid = 0xe800,
|
||||
.name = "DB3210",
|
||||
},
|
||||
{
|
||||
.chipid = 0xf000,
|
||||
.name = "DB3350 P1x",
|
||||
},
|
||||
{
|
||||
.chipid = 0xf100,
|
||||
.name = "DB3350 P2x",
|
||||
},
|
||||
{
|
||||
.chipid = 0x0000, /* List terminator */
|
||||
.name = NULL,
|
||||
}
|
||||
};
|
||||
|
||||
static void u300_init_check_chip(void)
|
||||
{
|
||||
|
||||
u16 val;
|
||||
struct db_chip *chip;
|
||||
const char *chipname;
|
||||
const char unknown[] = "UNKNOWN";
|
||||
|
||||
/* Read out and print chip ID */
|
||||
val = readw(U300_SYSCON_VBASE + U300_SYSCON_CIDR);
|
||||
/* This is in funky bigendian order... */
|
||||
val = (val & 0xFFU) << 8 | (val >> 8);
|
||||
chip = db_chips;
|
||||
chipname = unknown;
|
||||
|
||||
for ( ; chip->chipid; chip++) {
|
||||
if (chip->chipid == (val & 0xFF00U)) {
|
||||
chipname = chip->name;
|
||||
break;
|
||||
}
|
||||
}
|
||||
printk(KERN_INFO "Initializing U300 system on %s baseband chip " \
|
||||
"(chip ID 0x%04x)\n", chipname, val);
|
||||
|
||||
#ifdef CONFIG_MACH_U300_BS26
|
||||
if ((val & 0xFF00U) != 0xc800) {
|
||||
printk(KERN_ERR "Platform configured for BS25/BS26 " \
|
||||
"with DB3150 but %s detected, expect problems!",
|
||||
chipname);
|
||||
}
|
||||
#endif
|
||||
#ifdef CONFIG_MACH_U300_BS330
|
||||
if ((val & 0xFF00U) != 0xd800) {
|
||||
printk(KERN_ERR "Platform configured for BS330 " \
|
||||
"with DB3200 but %s detected, expect problems!",
|
||||
chipname);
|
||||
}
|
||||
#endif
|
||||
#ifdef CONFIG_MACH_U300_BS335
|
||||
if ((val & 0xFF00U) != 0xf000 && (val & 0xFF00U) != 0xf100) {
|
||||
printk(KERN_ERR "Platform configured for BS365 " \
|
||||
" with DB3350 but %s detected, expect problems!",
|
||||
chipname);
|
||||
}
|
||||
#endif
|
||||
#ifdef CONFIG_MACH_U300_BS365
|
||||
if ((val & 0xFF00U) != 0xe800) {
|
||||
printk(KERN_ERR "Platform configured for BS365 " \
|
||||
"with DB3210 but %s detected, expect problems!",
|
||||
chipname);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Some devices and their resources require reserved physical memory from
|
||||
* the end of the available RAM. This function traverses the list of devices
|
||||
* and assigns actual adresses to these.
|
||||
*/
|
||||
static void __init u300_assign_physmem(void)
|
||||
{
|
||||
unsigned long curr_start = __pa(high_memory);
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(platform_devs); i++) {
|
||||
for (j = 0; j < platform_devs[i]->num_resources; j++) {
|
||||
struct resource *const res =
|
||||
&platform_devs[i]->resource[j];
|
||||
|
||||
if (IORESOURCE_MEM == res->flags &&
|
||||
0 == res->start) {
|
||||
res->start = curr_start;
|
||||
res->end += curr_start;
|
||||
curr_start += (res->end - res->start + 1);
|
||||
|
||||
printk(KERN_INFO "core.c: Mapping RAM " \
|
||||
"%#x-%#x to device %s:%s\n",
|
||||
res->start, res->end,
|
||||
platform_devs[i]->name, res->name);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void __init u300_init_devices(void)
|
||||
{
|
||||
int i;
|
||||
u16 val;
|
||||
|
||||
/* Check what platform we run and print some status information */
|
||||
u300_init_check_chip();
|
||||
|
||||
/* Set system to run at PLL208, max performance, a known state. */
|
||||
val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR);
|
||||
val &= ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK;
|
||||
writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR);
|
||||
/* Wait for the PLL208 to lock if not locked in yet */
|
||||
while (!(readw(U300_SYSCON_VBASE + U300_SYSCON_CSR) &
|
||||
U300_SYSCON_CSR_PLL208_LOCK_IND));
|
||||
|
||||
/* Register the AMBA devices in the AMBA bus abstraction layer */
|
||||
u300_clock_primecells();
|
||||
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
|
||||
struct amba_device *d = amba_devs[i];
|
||||
amba_device_register(d, &iomem_resource);
|
||||
}
|
||||
u300_unclock_primecells();
|
||||
|
||||
u300_assign_physmem();
|
||||
|
||||
/* Register the platform devices */
|
||||
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
|
||||
|
||||
#ifndef CONFIG_MACH_U300_SEMI_IS_SHARED
|
||||
/*
|
||||
* Enable SEMI self refresh. Self-refresh of the SDRAM is entered when
|
||||
* both subsystems are requesting this mode.
|
||||
* If we not share the Acc SDRAM, this is never the case. Therefore
|
||||
* enable it here from the App side.
|
||||
*/
|
||||
val = readw(U300_SYSCON_VBASE + U300_SYSCON_SMCR) |
|
||||
U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE;
|
||||
writew(val, U300_SYSCON_VBASE + U300_SYSCON_SMCR);
|
||||
#endif /* CONFIG_MACH_U300_SEMI_IS_SHARED */
|
||||
}
|
||||
|
||||
static int core_module_init(void)
|
||||
{
|
||||
/*
|
||||
* This needs to be initialized later: it needs the input framework
|
||||
* to be initialized first.
|
||||
*/
|
||||
return mmc_init(&mmcsd_device);
|
||||
}
|
||||
module_init(core_module_init);
|
||||
22
arch/arm/mach-u300/include/mach/debug-macro.S
Normal file
22
arch/arm/mach-u300/include/mach/debug-macro.S
Normal file
|
|
@ -0,0 +1,22 @@
|
|||
/*
|
||||
*
|
||||
* arch-arm/mach-u300/include/mach/debug-macro.S
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Debugging macro include header.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#include <mach/hardware.h>
|
||||
|
||||
.macro addruart,rx
|
||||
/* If we move the adress using MMU, use this. */
|
||||
mrc p15, 0, \rx, c1, c0
|
||||
tst \rx, #1 @ MMU enabled?
|
||||
ldreq \rx, = U300_SLOW_PER_PHYS_BASE @ MMU off, physical address
|
||||
ldrne \rx, = U300_SLOW_PER_VIRT_BASE @ MMU on, virtual address
|
||||
orr \rx, \rx, #0x00003000
|
||||
.endm
|
||||
|
||||
#include <asm/hardware/debug-pl01x.S>
|
||||
40
arch/arm/mach-u300/include/mach/entry-macro.S
Normal file
40
arch/arm/mach-u300/include/mach/entry-macro.S
Normal file
|
|
@ -0,0 +1,40 @@
|
|||
/*
|
||||
*
|
||||
* arch-arm/mach-u300/include/mach/entry-macro.S
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Low-level IRQ helper macros for ST-Ericsson U300
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#include <mach/hardware.h>
|
||||
#include <asm/hardware/vic.h>
|
||||
|
||||
.macro disable_fiq
|
||||
.endm
|
||||
|
||||
.macro get_irqnr_preamble, base, tmp
|
||||
.endm
|
||||
|
||||
.macro arch_ret_to_user, tmp1, tmp2
|
||||
.endm
|
||||
|
||||
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
||||
ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON0_BASE
|
||||
ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
|
||||
mov \irqnr, #0
|
||||
teq \irqstat, #0
|
||||
bne 1002f
|
||||
1001: ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON1_BASE
|
||||
ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
|
||||
mov \irqnr, #32
|
||||
teq \irqstat, #0
|
||||
beq 1003f
|
||||
1002: tst \irqstat, #1
|
||||
bne 1003f
|
||||
add \irqnr, \irqnr, #1
|
||||
movs \irqstat, \irqstat, lsr #1
|
||||
bne 1002b
|
||||
1003: /* EQ will be set if no irqs pending */
|
||||
.endm
|
||||
42
arch/arm/mach-u300/include/mach/memory.h
Normal file
42
arch/arm/mach-u300/include/mach/memory.h
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/include/mach/memory.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2007-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Memory virtual/physical mapping constants.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
* Author: Jonas Aaberg <jonas.aberg@stericsson.com>
|
||||
*/
|
||||
|
||||
#ifndef __MACH_MEMORY_H
|
||||
#define __MACH_MEMORY_H
|
||||
|
||||
#ifdef CONFIG_MACH_U300_DUAL_RAM
|
||||
|
||||
#define PHYS_OFFSET UL(0x48000000)
|
||||
#define BOOT_PARAMS_OFFSET (PHYS_OFFSET + 0x100)
|
||||
|
||||
#else
|
||||
|
||||
#ifdef CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
|
||||
#define PHYS_OFFSET (0x28000000 + \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE - \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)
|
||||
#else
|
||||
#define PHYS_OFFSET (0x28000000 + \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE + \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)
|
||||
#endif
|
||||
#define BOOT_PARAMS_OFFSET (0x28000000 + \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE + \
|
||||
(CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024 + 0x100)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* We enable a real big DMA buffer if need be.
|
||||
*/
|
||||
#define CONSISTENT_DMA_SIZE SZ_4M
|
||||
|
||||
#endif
|
||||
19
arch/arm/mach-u300/include/mach/platform.h
Normal file
19
arch/arm/mach-u300/include/mach/platform.h
Normal file
|
|
@ -0,0 +1,19 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/include/mach/platform.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Basic platform init and mapping functions.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
void u300_map_io(void);
|
||||
void u300_init_irq(void);
|
||||
void u300_init_devices(void);
|
||||
extern struct sys_timer u300_timer;
|
||||
|
||||
#endif
|
||||
42
arch/arm/mach-u300/include/mach/system.h
Normal file
42
arch/arm/mach-u300/include/mach/system.h
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/include/mach/system.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2007-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* System shutdown and reset functions.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#include <mach/hardware.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/hardware/vic.h>
|
||||
#include <asm/irq.h>
|
||||
|
||||
/* Forward declare this function from the watchdog */
|
||||
void coh901327_watchdog_reset(void);
|
||||
|
||||
static inline void arch_idle(void)
|
||||
{
|
||||
cpu_do_idle();
|
||||
}
|
||||
|
||||
static void arch_reset(char mode, const char *cmd)
|
||||
{
|
||||
switch (mode) {
|
||||
case 's':
|
||||
case 'h':
|
||||
printk(KERN_CRIT "RESET: shutting down/rebooting system\n");
|
||||
/* Disable interrupts */
|
||||
local_irq_disable();
|
||||
#ifdef CONFIG_COH901327_WATCHDOG
|
||||
coh901327_watchdog_reset();
|
||||
#endif
|
||||
break;
|
||||
default:
|
||||
/* Do nothing */
|
||||
break;
|
||||
}
|
||||
/* Wait for system do die/reset. */
|
||||
while (1);
|
||||
}
|
||||
17
arch/arm/mach-u300/include/mach/timex.h
Normal file
17
arch/arm/mach-u300/include/mach/timex.h
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/include/mach/timex.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Platform tick rate definition.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#ifndef __MACH_TIMEX_H
|
||||
#define __MACH_TIMEX_H
|
||||
|
||||
/* This is for the APP OS GP1 (General Purpose 1) timer */
|
||||
#define CLOCK_TICK_RATE 1000000
|
||||
|
||||
#endif
|
||||
46
arch/arm/mach-u300/include/mach/uncompress.h
Normal file
46
arch/arm/mach-u300/include/mach/uncompress.h
Normal file
|
|
@ -0,0 +1,46 @@
|
|||
/*
|
||||
* arch/arm/mach-u300/include/mach/uncompress.h
|
||||
*
|
||||
* Copyright (C) 2003 ARM Limited
|
||||
*
|
||||
* 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; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
#define AMBA_UART_DR (*(volatile unsigned char *)0xc0013000)
|
||||
#define AMBA_UART_LCRH (*(volatile unsigned char *)0xc001302C)
|
||||
#define AMBA_UART_CR (*(volatile unsigned char *)0xc0013030)
|
||||
#define AMBA_UART_FR (*(volatile unsigned char *)0xc0013018)
|
||||
|
||||
/*
|
||||
* This does not append a newline
|
||||
*/
|
||||
static inline void putc(int c)
|
||||
{
|
||||
while (AMBA_UART_FR & (1 << 5))
|
||||
barrier();
|
||||
|
||||
AMBA_UART_DR = c;
|
||||
}
|
||||
|
||||
static inline void flush(void)
|
||||
{
|
||||
while (AMBA_UART_FR & (1 << 3))
|
||||
barrier();
|
||||
}
|
||||
|
||||
/*
|
||||
* nothing to do
|
||||
*/
|
||||
#define arch_decomp_setup()
|
||||
#define arch_decomp_wdog()
|
||||
12
arch/arm/mach-u300/include/mach/vmalloc.h
Normal file
12
arch/arm/mach-u300/include/mach/vmalloc.h
Normal file
|
|
@ -0,0 +1,12 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/include/mach/vmalloc.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Virtual memory allocations
|
||||
* End must be above the I/O registers and on an even 2MiB boundary.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#define VMALLOC_END 0xfe800000
|
||||
216
arch/arm/mach-u300/mmc.c
Normal file
216
arch/arm/mach-u300/mmc.c
Normal file
|
|
@ -0,0 +1,216 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/mmc.c
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
* Author: Johan Lundin <johan.lundin@stericsson.com>
|
||||
* Author: Jonas Aaberg <jonas.aberg@stericsson.com>
|
||||
*/
|
||||
#include <linux/device.h>
|
||||
#include <linux/amba/bus.h>
|
||||
#include <linux/mmc/host.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/gpio.h>
|
||||
|
||||
#include <asm/mach/mmc.h>
|
||||
#include "mmc.h"
|
||||
|
||||
struct mmci_card_event {
|
||||
struct input_dev *mmc_input;
|
||||
int mmc_inserted;
|
||||
struct work_struct workq;
|
||||
struct mmc_platform_data mmc0_plat_data;
|
||||
};
|
||||
|
||||
static unsigned int mmc_status(struct device *dev)
|
||||
{
|
||||
struct mmci_card_event *mmci_card = container_of(
|
||||
dev->platform_data,
|
||||
struct mmci_card_event, mmc0_plat_data);
|
||||
|
||||
return mmci_card->mmc_inserted;
|
||||
}
|
||||
|
||||
/*
|
||||
* Here follows a large chunk of code which will only be enabled if you
|
||||
* have both the AB3100 chip mounted and the MMC subsystem activated.
|
||||
*/
|
||||
|
||||
static u32 mmc_translate_vdd(struct device *dev, unsigned int voltage)
|
||||
{
|
||||
int v;
|
||||
|
||||
/*
|
||||
* MMC Spec:
|
||||
* bit 7: 1.70 - 1.95V
|
||||
* bit 8 - 14: 2.0 - 2.6V
|
||||
* bit 15 - 23: 2.7 - 3.6V
|
||||
*
|
||||
* ab3100 voltages:
|
||||
* 000 - 2.85V
|
||||
* 001 - 2.75V
|
||||
* 010 - 1.8V
|
||||
* 011 - 1.5V
|
||||
*/
|
||||
switch (voltage) {
|
||||
case 8:
|
||||
v = 3;
|
||||
break;
|
||||
case 9:
|
||||
case 10:
|
||||
case 11:
|
||||
case 12:
|
||||
case 13:
|
||||
case 14:
|
||||
case 15:
|
||||
v = 1;
|
||||
break;
|
||||
case 16:
|
||||
v = 1;
|
||||
break;
|
||||
case 17:
|
||||
case 18:
|
||||
case 19:
|
||||
case 20:
|
||||
case 21:
|
||||
case 22:
|
||||
case 23:
|
||||
case 24:
|
||||
v = 0;
|
||||
break;
|
||||
default:
|
||||
v = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
/* PL180 voltage register bits */
|
||||
return v << 2;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int mmci_callback(void *data)
|
||||
{
|
||||
struct mmci_card_event *mmci_card = data;
|
||||
|
||||
disable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD);
|
||||
schedule_work(&mmci_card->workq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static ssize_t gpio_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct mmci_card_event *mmci_card = container_of(
|
||||
dev->platform_data,
|
||||
struct mmci_card_event, mmc0_plat_data);
|
||||
|
||||
|
||||
return sprintf(buf, "%d\n", !mmci_card->mmc_inserted);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(mmc_inserted, S_IRUGO, gpio_show, NULL);
|
||||
|
||||
static void _mmci_callback(struct work_struct *ws)
|
||||
{
|
||||
|
||||
struct mmci_card_event *mmci_card = container_of(
|
||||
ws,
|
||||
struct mmci_card_event, workq);
|
||||
|
||||
mdelay(20);
|
||||
|
||||
mmci_card->mmc_inserted = !!gpio_get_value(U300_GPIO_PIN_MMC_CD);
|
||||
|
||||
input_report_switch(mmci_card->mmc_input, KEY_INSERT,
|
||||
!mmci_card->mmc_inserted);
|
||||
input_sync(mmci_card->mmc_input);
|
||||
|
||||
pr_debug("MMC/SD card was %s\n",
|
||||
mmci_card->mmc_inserted ? "removed" : "inserted");
|
||||
|
||||
enable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD, !mmci_card->mmc_inserted);
|
||||
}
|
||||
|
||||
int __devinit mmc_init(struct amba_device *adev)
|
||||
{
|
||||
struct mmci_card_event *mmci_card;
|
||||
struct device *mmcsd_device = &adev->dev;
|
||||
int ret = 0;
|
||||
|
||||
mmci_card = kzalloc(sizeof(struct mmci_card_event), GFP_KERNEL);
|
||||
if (!mmci_card)
|
||||
return -ENOMEM;
|
||||
|
||||
/* Nominally 2.85V on our platform */
|
||||
mmci_card->mmc0_plat_data.ocr_mask = MMC_VDD_28_29;
|
||||
mmci_card->mmc0_plat_data.translate_vdd = mmc_translate_vdd;
|
||||
mmci_card->mmc0_plat_data.status = mmc_status;
|
||||
|
||||
mmcsd_device->platform_data = (void *) &mmci_card->mmc0_plat_data;
|
||||
|
||||
INIT_WORK(&mmci_card->workq, _mmci_callback);
|
||||
|
||||
ret = gpio_request(U300_GPIO_PIN_MMC_CD, "MMC card detection");
|
||||
if (ret) {
|
||||
printk(KERN_CRIT "Could not allocate MMC card detection " \
|
||||
"GPIO pin\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = gpio_direction_input(U300_GPIO_PIN_MMC_CD);
|
||||
if (ret) {
|
||||
printk(KERN_CRIT "Invalid GPIO pin requested\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = sysfs_create_file(&mmcsd_device->kobj,
|
||||
&dev_attr_mmc_inserted.attr);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
mmci_card->mmc_input = input_allocate_device();
|
||||
if (!mmci_card->mmc_input) {
|
||||
printk(KERN_CRIT "Could not allocate MMC input device\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
mmci_card->mmc_input->name = "MMC insert notification";
|
||||
mmci_card->mmc_input->id.bustype = BUS_HOST;
|
||||
mmci_card->mmc_input->id.vendor = 0;
|
||||
mmci_card->mmc_input->id.product = 0;
|
||||
mmci_card->mmc_input->id.version = 0x0100;
|
||||
mmci_card->mmc_input->dev.parent = mmcsd_device;
|
||||
input_set_capability(mmci_card->mmc_input, EV_SW, KEY_INSERT);
|
||||
|
||||
/*
|
||||
* Since this must always be compiled into the kernel, this input
|
||||
* is never unregistered or free:ed.
|
||||
*/
|
||||
ret = input_register_device(mmci_card->mmc_input);
|
||||
if (ret) {
|
||||
input_free_device(mmci_card->mmc_input);
|
||||
goto out;
|
||||
}
|
||||
|
||||
input_set_drvdata(mmci_card->mmc_input, mmci_card);
|
||||
|
||||
ret = gpio_register_callback(U300_GPIO_PIN_MMC_CD, mmci_callback,
|
||||
mmci_card);
|
||||
|
||||
schedule_work(&mmci_card->workq);
|
||||
|
||||
printk(KERN_INFO "Registered MMC insert/remove notification\n");
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
18
arch/arm/mach-u300/mmc.h
Normal file
18
arch/arm/mach-u300/mmc.h
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/mmc.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*
|
||||
* Author: Jonas Aaberg <jonas.aberg@stericsson.com>
|
||||
*/
|
||||
#ifndef MMC_H
|
||||
#define MMC_H
|
||||
|
||||
#include <linux/amba/bus.h>
|
||||
|
||||
int __devinit mmc_init(struct amba_device *adev);
|
||||
|
||||
#endif
|
||||
422
arch/arm/mach-u300/timer.c
Normal file
422
arch/arm/mach-u300/timer.c
Normal file
|
|
@ -0,0 +1,422 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/timer.c
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2007-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Timer COH 901 328, runs the OS timer interrupt.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/timex.h>
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/clocksource.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <mach/hardware.h>
|
||||
|
||||
/* Generic stuff */
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/mach/time.h>
|
||||
#include <asm/mach/irq.h>
|
||||
|
||||
#include "clock.h"
|
||||
|
||||
/*
|
||||
* APP side special timer registers
|
||||
* This timer contains four timers which can fire an interrupt each.
|
||||
* OS (operating system) timer @ 32768 Hz
|
||||
* DD (device driver) timer @ 1 kHz
|
||||
* GP1 (general purpose 1) timer @ 1MHz
|
||||
* GP2 (general purpose 2) timer @ 1MHz
|
||||
*/
|
||||
|
||||
/* Reset OS Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_ROST (0x0000)
|
||||
#define U300_TIMER_APP_ROST_TIMER_RESET (0x00000000)
|
||||
/* Enable OS Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_EOST (0x0004)
|
||||
#define U300_TIMER_APP_EOST_TIMER_ENABLE (0x00000000)
|
||||
/* Disable OS Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DOST (0x0008)
|
||||
#define U300_TIMER_APP_DOST_TIMER_DISABLE (0x00000000)
|
||||
/* OS Timer Mode Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_SOSTM (0x000c)
|
||||
#define U300_TIMER_APP_SOSTM_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_SOSTM_MODE_ONE_SHOT (0x00000001)
|
||||
/* OS Timer Status Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_OSTS (0x0010)
|
||||
#define U300_TIMER_APP_OSTS_TIMER_STATE_MASK (0x0000000F)
|
||||
#define U300_TIMER_APP_OSTS_TIMER_STATE_IDLE (0x00000001)
|
||||
#define U300_TIMER_APP_OSTS_TIMER_STATE_ACTIVE (0x00000002)
|
||||
#define U300_TIMER_APP_OSTS_ENABLE_IND (0x00000010)
|
||||
#define U300_TIMER_APP_OSTS_MODE_MASK (0x00000020)
|
||||
#define U300_TIMER_APP_OSTS_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_OSTS_MODE_ONE_SHOT (0x00000020)
|
||||
#define U300_TIMER_APP_OSTS_IRQ_ENABLED_IND (0x00000040)
|
||||
#define U300_TIMER_APP_OSTS_IRQ_PENDING_IND (0x00000080)
|
||||
/* OS Timer Current Count Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_OSTCC (0x0014)
|
||||
/* OS Timer Terminal Count Register 32bit (R/W) */
|
||||
#define U300_TIMER_APP_OSTTC (0x0018)
|
||||
/* OS Timer Interrupt Enable Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_OSTIE (0x001c)
|
||||
#define U300_TIMER_APP_OSTIE_IRQ_DISABLE (0x00000000)
|
||||
#define U300_TIMER_APP_OSTIE_IRQ_ENABLE (0x00000001)
|
||||
/* OS Timer Interrupt Acknowledge Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_OSTIA (0x0020)
|
||||
#define U300_TIMER_APP_OSTIA_IRQ_ACK (0x00000080)
|
||||
|
||||
/* Reset DD Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_RDDT (0x0040)
|
||||
#define U300_TIMER_APP_RDDT_TIMER_RESET (0x00000000)
|
||||
/* Enable DD Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_EDDT (0x0044)
|
||||
#define U300_TIMER_APP_EDDT_TIMER_ENABLE (0x00000000)
|
||||
/* Disable DD Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DDDT (0x0048)
|
||||
#define U300_TIMER_APP_DDDT_TIMER_DISABLE (0x00000000)
|
||||
/* DD Timer Mode Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_SDDTM (0x004c)
|
||||
#define U300_TIMER_APP_SDDTM_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_SDDTM_MODE_ONE_SHOT (0x00000001)
|
||||
/* DD Timer Status Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_DDTS (0x0050)
|
||||
#define U300_TIMER_APP_DDTS_TIMER_STATE_MASK (0x0000000F)
|
||||
#define U300_TIMER_APP_DDTS_TIMER_STATE_IDLE (0x00000001)
|
||||
#define U300_TIMER_APP_DDTS_TIMER_STATE_ACTIVE (0x00000002)
|
||||
#define U300_TIMER_APP_DDTS_ENABLE_IND (0x00000010)
|
||||
#define U300_TIMER_APP_DDTS_MODE_MASK (0x00000020)
|
||||
#define U300_TIMER_APP_DDTS_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_DDTS_MODE_ONE_SHOT (0x00000020)
|
||||
#define U300_TIMER_APP_DDTS_IRQ_ENABLED_IND (0x00000040)
|
||||
#define U300_TIMER_APP_DDTS_IRQ_PENDING_IND (0x00000080)
|
||||
/* DD Timer Current Count Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_DDTCC (0x0054)
|
||||
/* DD Timer Terminal Count Register 32bit (R/W) */
|
||||
#define U300_TIMER_APP_DDTTC (0x0058)
|
||||
/* DD Timer Interrupt Enable Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DDTIE (0x005c)
|
||||
#define U300_TIMER_APP_DDTIE_IRQ_DISABLE (0x00000000)
|
||||
#define U300_TIMER_APP_DDTIE_IRQ_ENABLE (0x00000001)
|
||||
/* DD Timer Interrupt Acknowledge Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DDTIA (0x0060)
|
||||
#define U300_TIMER_APP_DDTIA_IRQ_ACK (0x00000080)
|
||||
|
||||
/* Reset GP1 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_RGPT1 (0x0080)
|
||||
#define U300_TIMER_APP_RGPT1_TIMER_RESET (0x00000000)
|
||||
/* Enable GP1 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_EGPT1 (0x0084)
|
||||
#define U300_TIMER_APP_EGPT1_TIMER_ENABLE (0x00000000)
|
||||
/* Disable GP1 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DGPT1 (0x0088)
|
||||
#define U300_TIMER_APP_DGPT1_TIMER_DISABLE (0x00000000)
|
||||
/* GP1 Timer Mode Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_SGPT1M (0x008c)
|
||||
#define U300_TIMER_APP_SGPT1M_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT (0x00000001)
|
||||
/* GP1 Timer Status Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_GPT1S (0x0090)
|
||||
#define U300_TIMER_APP_GPT1S_TIMER_STATE_MASK (0x0000000F)
|
||||
#define U300_TIMER_APP_GPT1S_TIMER_STATE_IDLE (0x00000001)
|
||||
#define U300_TIMER_APP_GPT1S_TIMER_STATE_ACTIVE (0x00000002)
|
||||
#define U300_TIMER_APP_GPT1S_ENABLE_IND (0x00000010)
|
||||
#define U300_TIMER_APP_GPT1S_MODE_MASK (0x00000020)
|
||||
#define U300_TIMER_APP_GPT1S_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_GPT1S_MODE_ONE_SHOT (0x00000020)
|
||||
#define U300_TIMER_APP_GPT1S_IRQ_ENABLED_IND (0x00000040)
|
||||
#define U300_TIMER_APP_GPT1S_IRQ_PENDING_IND (0x00000080)
|
||||
/* GP1 Timer Current Count Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_GPT1CC (0x0094)
|
||||
/* GP1 Timer Terminal Count Register 32bit (R/W) */
|
||||
#define U300_TIMER_APP_GPT1TC (0x0098)
|
||||
/* GP1 Timer Interrupt Enable Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_GPT1IE (0x009c)
|
||||
#define U300_TIMER_APP_GPT1IE_IRQ_DISABLE (0x00000000)
|
||||
#define U300_TIMER_APP_GPT1IE_IRQ_ENABLE (0x00000001)
|
||||
/* GP1 Timer Interrupt Acknowledge Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_GPT1IA (0x00a0)
|
||||
#define U300_TIMER_APP_GPT1IA_IRQ_ACK (0x00000080)
|
||||
|
||||
/* Reset GP2 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_RGPT2 (0x00c0)
|
||||
#define U300_TIMER_APP_RGPT2_TIMER_RESET (0x00000000)
|
||||
/* Enable GP2 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_EGPT2 (0x00c4)
|
||||
#define U300_TIMER_APP_EGPT2_TIMER_ENABLE (0x00000000)
|
||||
/* Disable GP2 Timer 32bit (-/W) */
|
||||
#define U300_TIMER_APP_DGPT2 (0x00c8)
|
||||
#define U300_TIMER_APP_DGPT2_TIMER_DISABLE (0x00000000)
|
||||
/* GP2 Timer Mode Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_SGPT2M (0x00cc)
|
||||
#define U300_TIMER_APP_SGPT2M_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_SGPT2M_MODE_ONE_SHOT (0x00000001)
|
||||
/* GP2 Timer Status Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_GPT2S (0x00d0)
|
||||
#define U300_TIMER_APP_GPT2S_TIMER_STATE_MASK (0x0000000F)
|
||||
#define U300_TIMER_APP_GPT2S_TIMER_STATE_IDLE (0x00000001)
|
||||
#define U300_TIMER_APP_GPT2S_TIMER_STATE_ACTIVE (0x00000002)
|
||||
#define U300_TIMER_APP_GPT2S_ENABLE_IND (0x00000010)
|
||||
#define U300_TIMER_APP_GPT2S_MODE_MASK (0x00000020)
|
||||
#define U300_TIMER_APP_GPT2S_MODE_CONTINUOUS (0x00000000)
|
||||
#define U300_TIMER_APP_GPT2S_MODE_ONE_SHOT (0x00000020)
|
||||
#define U300_TIMER_APP_GPT2S_IRQ_ENABLED_IND (0x00000040)
|
||||
#define U300_TIMER_APP_GPT2S_IRQ_PENDING_IND (0x00000080)
|
||||
/* GP2 Timer Current Count Register 32bit (R/-) */
|
||||
#define U300_TIMER_APP_GPT2CC (0x00d4)
|
||||
/* GP2 Timer Terminal Count Register 32bit (R/W) */
|
||||
#define U300_TIMER_APP_GPT2TC (0x00d8)
|
||||
/* GP2 Timer Interrupt Enable Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_GPT2IE (0x00dc)
|
||||
#define U300_TIMER_APP_GPT2IE_IRQ_DISABLE (0x00000000)
|
||||
#define U300_TIMER_APP_GPT2IE_IRQ_ENABLE (0x00000001)
|
||||
/* GP2 Timer Interrupt Acknowledge Register 32bit (-/W) */
|
||||
#define U300_TIMER_APP_GPT2IA (0x00e0)
|
||||
#define U300_TIMER_APP_GPT2IA_IRQ_ACK (0x00000080)
|
||||
|
||||
/* Clock request control register - all four timers */
|
||||
#define U300_TIMER_APP_CRC (0x100)
|
||||
#define U300_TIMER_APP_CRC_CLOCK_REQUEST_ENABLE (0x00000001)
|
||||
|
||||
#define TICKS_PER_JIFFY ((CLOCK_TICK_RATE + (HZ/2)) / HZ)
|
||||
#define US_PER_TICK ((1000000 + (HZ/2)) / HZ)
|
||||
|
||||
/*
|
||||
* The u300_set_mode() function is always called first, if we
|
||||
* have oneshot timer active, the oneshot scheduling function
|
||||
* u300_set_next_event() is called immediately after.
|
||||
*/
|
||||
static void u300_set_mode(enum clock_event_mode mode,
|
||||
struct clock_event_device *evt)
|
||||
{
|
||||
switch (mode) {
|
||||
case CLOCK_EVT_MODE_PERIODIC:
|
||||
/* Disable interrupts on GPT1 */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Disable GP1 while we're reprogramming it. */
|
||||
writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
|
||||
/*
|
||||
* Set the periodic mode to a certain number of ticks per
|
||||
* jiffy.
|
||||
*/
|
||||
writel(TICKS_PER_JIFFY,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
|
||||
/*
|
||||
* Set continuous mode, so the timer keeps triggering
|
||||
* interrupts.
|
||||
*/
|
||||
writel(U300_TIMER_APP_SGPT1M_MODE_CONTINUOUS,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
|
||||
/* Enable timer interrupts */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Then enable the OS timer again */
|
||||
writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
|
||||
break;
|
||||
case CLOCK_EVT_MODE_ONESHOT:
|
||||
/* Just break; here? */
|
||||
/*
|
||||
* The actual event will be programmed by the next event hook,
|
||||
* so we just set a dummy value somewhere at the end of the
|
||||
* universe here.
|
||||
*/
|
||||
/* Disable interrupts on GPT1 */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Disable GP1 while we're reprogramming it. */
|
||||
writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
|
||||
/*
|
||||
* Expire far in the future, u300_set_next_event() will be
|
||||
* called soon...
|
||||
*/
|
||||
writel(0xFFFFFFFF, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
|
||||
/* We run one shot per tick here! */
|
||||
writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
|
||||
/* Enable interrupts for this timer */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Enable timer */
|
||||
writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
|
||||
break;
|
||||
case CLOCK_EVT_MODE_UNUSED:
|
||||
case CLOCK_EVT_MODE_SHUTDOWN:
|
||||
/* Disable interrupts on GP1 */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Disable GP1 */
|
||||
writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
|
||||
break;
|
||||
case CLOCK_EVT_MODE_RESUME:
|
||||
/* Ignore this call */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* The app timer in one shot mode obviously has to be reprogrammed
|
||||
* in EXACTLY this sequence to work properly. Do NOT try to e.g. replace
|
||||
* the interrupt disable + timer disable commands with a reset command,
|
||||
* it will fail miserably. Apparently (and I found this the hard way)
|
||||
* the timer is very sensitive to the instruction order, though you don't
|
||||
* get that impression from the data sheet.
|
||||
*/
|
||||
static int u300_set_next_event(unsigned long cycles,
|
||||
struct clock_event_device *evt)
|
||||
|
||||
{
|
||||
/* Disable interrupts on GPT1 */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Disable GP1 while we're reprogramming it. */
|
||||
writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
|
||||
/* Reset the General Purpose timer 1. */
|
||||
writel(U300_TIMER_APP_RGPT1_TIMER_RESET,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1);
|
||||
/* IRQ in n * cycles */
|
||||
writel(cycles, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
|
||||
/*
|
||||
* We run one shot per tick here! (This is necessary to reconfigure,
|
||||
* the timer will tilt if you don't!)
|
||||
*/
|
||||
writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
|
||||
/* Enable timer interrupts */
|
||||
writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
|
||||
/* Then enable the OS timer again */
|
||||
writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Use general purpose timer 1 as clock event */
|
||||
static struct clock_event_device clockevent_u300_1mhz = {
|
||||
.name = "GPT1",
|
||||
.rating = 300, /* Reasonably fast and accurate clock event */
|
||||
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
|
||||
/* 22 calculated using the algorithm in arch/mips/kernel/time.c */
|
||||
.shift = 22,
|
||||
.set_next_event = u300_set_next_event,
|
||||
.set_mode = u300_set_mode,
|
||||
};
|
||||
|
||||
/* Clock event timer interrupt handler */
|
||||
static irqreturn_t u300_timer_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct clock_event_device *evt = &clockevent_u300_1mhz;
|
||||
/* ACK/Clear timer IRQ for the APP GPT1 Timer */
|
||||
writel(U300_TIMER_APP_GPT1IA_IRQ_ACK,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IA);
|
||||
evt->event_handler(evt);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct irqaction u300_timer_irq = {
|
||||
.name = "U300 Timer Tick",
|
||||
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
|
||||
.handler = u300_timer_interrupt,
|
||||
};
|
||||
|
||||
/* Use general purpose timer 2 as clock source */
|
||||
static cycle_t u300_get_cycles(void)
|
||||
{
|
||||
return (cycles_t) readl(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC);
|
||||
}
|
||||
|
||||
static struct clocksource clocksource_u300_1mhz = {
|
||||
.name = "GPT2",
|
||||
.rating = 300, /* Reasonably fast and accurate clock source */
|
||||
.read = u300_get_cycles,
|
||||
.mask = CLOCKSOURCE_MASK(32), /* 32 bits */
|
||||
/* 22 calculated using the algorithm in arch/mips/kernel/time.c */
|
||||
.shift = 22,
|
||||
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* This sets up the system timers, clock source and clock event.
|
||||
*/
|
||||
static void __init u300_timer_init(void)
|
||||
{
|
||||
u300_enable_timer_clock();
|
||||
/*
|
||||
* Disable the "OS" and "DD" timers - these are designed for Symbian!
|
||||
* Example usage in cnh1601578 cpu subsystem pd_timer_app.c
|
||||
*/
|
||||
writel(U300_TIMER_APP_CRC_CLOCK_REQUEST_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_CRC);
|
||||
writel(U300_TIMER_APP_ROST_TIMER_RESET,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_ROST);
|
||||
writel(U300_TIMER_APP_DOST_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DOST);
|
||||
writel(U300_TIMER_APP_RDDT_TIMER_RESET,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_RDDT);
|
||||
writel(U300_TIMER_APP_DDDT_TIMER_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_DDDT);
|
||||
|
||||
/* Reset the General Purpose timer 1. */
|
||||
writel(U300_TIMER_APP_RGPT1_TIMER_RESET,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1);
|
||||
|
||||
/* Set up the IRQ handler */
|
||||
setup_irq(IRQ_U300_TIMER_APP_GP1, &u300_timer_irq);
|
||||
|
||||
/* Reset the General Purpose timer 2 */
|
||||
writel(U300_TIMER_APP_RGPT2_TIMER_RESET,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT2);
|
||||
/* Set this timer to run around forever */
|
||||
writel(0xFFFFFFFFU, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2TC);
|
||||
/* Set continuous mode so it wraps around */
|
||||
writel(U300_TIMER_APP_SGPT2M_MODE_CONTINUOUS,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT2M);
|
||||
/* Disable timer interrupts */
|
||||
writel(U300_TIMER_APP_GPT2IE_IRQ_DISABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2IE);
|
||||
/* Then enable the GP2 timer to use as a free running us counter */
|
||||
writel(U300_TIMER_APP_EGPT2_TIMER_ENABLE,
|
||||
U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT2);
|
||||
|
||||
/* This is a pure microsecond clock source */
|
||||
clocksource_u300_1mhz.mult =
|
||||
clocksource_khz2mult(1000, clocksource_u300_1mhz.shift);
|
||||
if (clocksource_register(&clocksource_u300_1mhz))
|
||||
printk(KERN_ERR "timer: failed to initialize clock "
|
||||
"source %s\n", clocksource_u300_1mhz.name);
|
||||
|
||||
clockevent_u300_1mhz.mult =
|
||||
div_sc(1000000, NSEC_PER_SEC, clockevent_u300_1mhz.shift);
|
||||
/* 32bit counter, so 32bits delta is max */
|
||||
clockevent_u300_1mhz.max_delta_ns =
|
||||
clockevent_delta2ns(0xffffffff, &clockevent_u300_1mhz);
|
||||
/* This timer is slow enough to set for 1 cycle == 1 MHz */
|
||||
clockevent_u300_1mhz.min_delta_ns =
|
||||
clockevent_delta2ns(1, &clockevent_u300_1mhz);
|
||||
clockevent_u300_1mhz.cpumask = cpumask_of(0);
|
||||
clockevents_register_device(&clockevent_u300_1mhz);
|
||||
/*
|
||||
* TODO: init and register the rest of the timers too, they can be
|
||||
* used by hrtimers!
|
||||
*/
|
||||
}
|
||||
|
||||
/*
|
||||
* Very simple system timer that only register the clock event and
|
||||
* clock source.
|
||||
*/
|
||||
struct sys_timer u300_timer = {
|
||||
.init = u300_timer_init,
|
||||
};
|
||||
55
arch/arm/mach-u300/u300.c
Normal file
55
arch/arm/mach-u300/u300.c
Normal file
|
|
@ -0,0 +1,55 @@
|
|||
/*
|
||||
*
|
||||
* arch/arm/mach-u300/u300.c
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2006-2009 ST-Ericsson AB
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Platform machine definition.
|
||||
* Author: Linus Walleij <linus.walleij@stericsson.com>
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/io.h>
|
||||
#include <mach/hardware.h>
|
||||
#include <mach/platform.h>
|
||||
#include <mach/memory.h>
|
||||
#include <asm/mach-types.h>
|
||||
#include <asm/mach/arch.h>
|
||||
|
||||
static void __init u300_init_machine(void)
|
||||
{
|
||||
u300_init_devices();
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MACH_U300_BS2X
|
||||
#define MACH_U300_STRING "Ericsson AB U300 S25/S26/B25/B26 Prototype Board"
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MACH_U300_BS330
|
||||
#define MACH_U300_STRING "Ericsson AB U330 S330/B330 Prototype Board"
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MACH_U300_BS335
|
||||
#define MACH_U300_STRING "Ericsson AB U335 S335/B335 Prototype Board"
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_MACH_U300_BS365
|
||||
#define MACH_U300_STRING "Ericsson AB U365 S365/B365 Prototype Board"
|
||||
#endif
|
||||
|
||||
MACHINE_START(U300, MACH_U300_STRING)
|
||||
/* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */
|
||||
.phys_io = U300_AHB_PER_PHYS_BASE,
|
||||
.io_pg_offst = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc,
|
||||
.boot_params = BOOT_PARAMS_OFFSET,
|
||||
.map_io = u300_map_io,
|
||||
.init_irq = u300_init_irq,
|
||||
.timer = &u300_timer,
|
||||
.init_machine = u300_init_machine,
|
||||
MACHINE_END
|
||||
Loading…
Reference in New Issue
Block a user