diff options
Diffstat (limited to 'arch/arm/mach-vt8500')
| -rw-r--r-- | arch/arm/mach-vt8500/Kconfig | 30 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/include/mach/debug-macro.S | 31 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/include/mach/timex.h | 26 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/include/mach/uncompress.h | 37 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/timer.c | 184 | ||||
| -rw-r--r-- | arch/arm/mach-vt8500/vt8500.c | 9 |
8 files changed, 31 insertions, 289 deletions
diff --git a/arch/arm/mach-vt8500/Kconfig b/arch/arm/mach-vt8500/Kconfig index 2ed0b7d..e3e94b2 100644 --- a/arch/arm/mach-vt8500/Kconfig +++ b/arch/arm/mach-vt8500/Kconfig @@ -1,12 +1,34 @@ config ARCH_VT8500 - bool "VIA/WonderMedia 85xx" if ARCH_MULTI_V5 - default ARCH_VT8500_SINGLE + bool select ARCH_HAS_CPUFREQ select ARCH_REQUIRE_GPIOLIB select CLKDEV_LOOKUP - select CPU_ARM926T + select CLKSRC_OF select GENERIC_CLOCKEVENTS - select GENERIC_GPIO select HAVE_CLK + select VT8500_TIMER help Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip. + +config ARCH_WM8505 + bool "VIA/Wondermedia 85xx and WM8650" + depends on ARCH_MULTI_V5 + select ARCH_VT8500 + select CPU_ARM926T + help + +config ARCH_WM8750 + bool "WonderMedia WM8750" + depends on ARCH_MULTI_V6 + select ARCH_VT8500 + select CPU_V6 + help + Support for WonderMedia WM8750 System-on-Chip. + +config ARCH_WM8850 + bool "WonderMedia WM8850" + depends on ARCH_MULTI_V7 + select ARCH_VT8500 + select CPU_V7 + help + Support for WonderMedia WM8850 System-on-Chip. diff --git a/arch/arm/mach-vt8500/Makefile b/arch/arm/mach-vt8500/Makefile index e035251..92ceb24 100644 --- a/arch/arm/mach-vt8500/Makefile +++ b/arch/arm/mach-vt8500/Makefile @@ -1 +1 @@ -obj-$(CONFIG_ARCH_VT8500) += irq.o timer.o vt8500.o +obj-$(CONFIG_ARCH_VT8500) += irq.o vt8500.o diff --git a/arch/arm/mach-vt8500/common.h b/arch/arm/mach-vt8500/common.h index 6f2b843..77611a6 100644 --- a/arch/arm/mach-vt8500/common.h +++ b/arch/arm/mach-vt8500/common.h @@ -18,7 +18,6 @@ #include <linux/of.h> -void __init vt8500_timer_init(void); int __init vt8500_irq_init(struct device_node *node, struct device_node *parent); diff --git a/arch/arm/mach-vt8500/include/mach/debug-macro.S b/arch/arm/mach-vt8500/include/mach/debug-macro.S deleted file mode 100644 index ca292f2..0000000 --- a/arch/arm/mach-vt8500/include/mach/debug-macro.S +++ /dev/null @@ -1,31 +0,0 @@ -/* - * arch/arm/mach-vt8500/include/mach/debug-macro.S - * - * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * Debugging macro include header - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -*/ - - .macro addruart, rp, rv, tmp - mov \rp, #0x00200000 - orr \rv, \rp, #0xf8000000 - orr \rp, \rp, #0xd8000000 - .endm - - .macro senduart,rd,rx - strb \rd, [\rx, #0] - .endm - - .macro busyuart,rd,rx -1001: ldr \rd, [\rx, #0x1c] - ands \rd, \rd, #0x2 - bne 1001b - .endm - - .macro waituart,rd,rx - .endm diff --git a/arch/arm/mach-vt8500/include/mach/timex.h b/arch/arm/mach-vt8500/include/mach/timex.h deleted file mode 100644 index 8487e4c..0000000 --- a/arch/arm/mach-vt8500/include/mach/timex.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * arch/arm/mach-vt8500/include/mach/timex.h - * - * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * 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 - */ - -#ifndef MACH_TIMEX_H -#define MACH_TIMEX_H - -#define CLOCK_TICK_RATE (3000000) - -#endif /* MACH_TIMEX_H */ diff --git a/arch/arm/mach-vt8500/include/mach/uncompress.h b/arch/arm/mach-vt8500/include/mach/uncompress.h deleted file mode 100644 index e6e81fd..0000000 --- a/arch/arm/mach-vt8500/include/mach/uncompress.h +++ /dev/null @@ -1,37 +0,0 @@ -/* arch/arm/mach-vt8500/include/mach/uncompress.h - * - * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * Based on arch/arm/mach-dove/include/mach/uncompress.h - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#define UART0_PHYS 0xd8200000 -#define UART0_ADDR(x) *(volatile unsigned char *)(UART0_PHYS + x) - -static void putc(const char c) -{ - while (UART0_ADDR(0x1c) & 0x2) - /* Tx busy, wait and poll */; - - UART0_ADDR(0) = c; -} - -static void flush(void) -{ -} - -/* - * nothing to do - */ -#define arch_decomp_setup() -#define arch_decomp_wdog() diff --git a/arch/arm/mach-vt8500/timer.c b/arch/arm/mach-vt8500/timer.c deleted file mode 100644 index 3dd21a4..0000000 --- a/arch/arm/mach-vt8500/timer.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * arch/arm/mach-vt8500/timer.c - * - * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz> - * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * 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 - */ - -/* - * This file is copied and modified from the original timer.c provided by - * Alexey Charkov. Minor changes have been made for Device Tree Support. - */ - -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/clocksource.h> -#include <linux/clockchips.h> -#include <linux/delay.h> -#include <asm/mach/time.h> - -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> - -#define VT8500_TIMER_OFFSET 0x0100 -#define VT8500_TIMER_HZ 3000000 -#define TIMER_MATCH_VAL 0x0000 -#define TIMER_COUNT_VAL 0x0010 -#define TIMER_STATUS_VAL 0x0014 -#define TIMER_IER_VAL 0x001c /* interrupt enable */ -#define TIMER_CTRL_VAL 0x0020 -#define TIMER_AS_VAL 0x0024 /* access status */ -#define TIMER_COUNT_R_ACTIVE (1 << 5) /* not ready for read */ -#define TIMER_COUNT_W_ACTIVE (1 << 4) /* not ready for write */ -#define TIMER_MATCH_W_ACTIVE (1 << 0) /* not ready for write */ - -#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) - -static void __iomem *regbase; - -static cycle_t vt8500_timer_read(struct clocksource *cs) -{ - int loops = msecs_to_loops(10); - writel(3, regbase + TIMER_CTRL_VAL); - while ((readl((regbase + TIMER_AS_VAL)) & TIMER_COUNT_R_ACTIVE) - && --loops) - cpu_relax(); - return readl(regbase + TIMER_COUNT_VAL); -} - -static struct clocksource clocksource = { - .name = "vt8500_timer", - .rating = 200, - .read = vt8500_timer_read, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -static int vt8500_timer_set_next_event(unsigned long cycles, - struct clock_event_device *evt) -{ - int loops = msecs_to_loops(10); - cycle_t alarm = clocksource.read(&clocksource) + cycles; - while ((readl(regbase + TIMER_AS_VAL) & TIMER_MATCH_W_ACTIVE) - && --loops) - cpu_relax(); - writel((unsigned long)alarm, regbase + TIMER_MATCH_VAL); - - if ((signed)(alarm - clocksource.read(&clocksource)) <= 16) - return -ETIME; - - writel(1, regbase + TIMER_IER_VAL); - - return 0; -} - -static void vt8500_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - switch (mode) { - case CLOCK_EVT_MODE_RESUME: - case CLOCK_EVT_MODE_PERIODIC: - break; - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - writel(readl(regbase + TIMER_CTRL_VAL) | 1, - regbase + TIMER_CTRL_VAL); - writel(0, regbase + TIMER_IER_VAL); - break; - } -} - -static struct clock_event_device clockevent = { - .name = "vt8500_timer", - .features = CLOCK_EVT_FEAT_ONESHOT, - .rating = 200, - .set_next_event = vt8500_timer_set_next_event, - .set_mode = vt8500_timer_set_mode, -}; - -static irqreturn_t vt8500_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = dev_id; - writel(0xf, regbase + TIMER_STATUS_VAL); - evt->event_handler(evt); - - return IRQ_HANDLED; -} - -static struct irqaction irq = { - .name = "vt8500_timer", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = vt8500_timer_interrupt, - .dev_id = &clockevent, -}; - -static struct of_device_id vt8500_timer_ids[] = { - { .compatible = "via,vt8500-timer" }, - { } -}; - -void __init vt8500_timer_init(void) -{ - struct device_node *np; - int timer_irq; - - np = of_find_matching_node(NULL, vt8500_timer_ids); - if (!np) { - pr_err("%s: Timer description missing from Device Tree\n", - __func__); - return; - } - regbase = of_iomap(np, 0); - if (!regbase) { - pr_err("%s: Missing iobase description in Device Tree\n", - __func__); - of_node_put(np); - return; - } - timer_irq = irq_of_parse_and_map(np, 0); - if (!timer_irq) { - pr_err("%s: Missing irq description in Device Tree\n", - __func__); - of_node_put(np); - return; - } - - writel(1, regbase + TIMER_CTRL_VAL); - writel(0xf, regbase + TIMER_STATUS_VAL); - writel(~0, regbase + TIMER_MATCH_VAL); - - if (clocksource_register_hz(&clocksource, VT8500_TIMER_HZ)) - pr_err("%s: vt8500_timer_init: clocksource_register failed for %s\n", - __func__, clocksource.name); - - clockevents_calc_mult_shift(&clockevent, VT8500_TIMER_HZ, 4); - - /* copy-pasted from mach-msm; no idea */ - clockevent.max_delta_ns = - clockevent_delta2ns(0xf0000000, &clockevent); - clockevent.min_delta_ns = clockevent_delta2ns(4, &clockevent); - clockevent.cpumask = cpumask_of(0); - - if (setup_irq(timer_irq, &irq)) - pr_err("%s: setup_irq failed for %s\n", __func__, - clockevent.name); - clockevents_register_device(&clockevent); -} - diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c index 3c66d48..49e8005 100644 --- a/arch/arm/mach-vt8500/vt8500.c +++ b/arch/arm/mach-vt8500/vt8500.c @@ -18,6 +18,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/clocksource.h> #include <linux/io.h> #include <linux/pm.h> @@ -175,22 +176,20 @@ static void __init vt8500_init_irq(void) of_irq_init(vt8500_irq_match); }; -static struct sys_timer vt8500_timer = { - .init = vt8500_timer_init, -}; - static const char * const vt8500_dt_compat[] = { "via,vt8500", "wm,wm8650", "wm,wm8505", + "wm,wm8750", + "wm,wm8850", }; DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)") .dt_compat = vt8500_dt_compat, .map_io = vt8500_map_io, .init_irq = vt8500_init_irq, - .timer = &vt8500_timer, .init_machine = vt8500_init, + .init_time = clocksource_of_init, .restart = vt8500_restart, .handle_irq = vt8500_handle_irq, MACHINE_END |