| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| 878 | 88.96% | 1 | 11.11% | |
| 64 | 6.48% | 1 | 11.11% | |
| 20 | 2.03% | 1 | 11.11% | |
| 16 | 1.62% | 1 | 11.11% | |
| 4 | 0.41% | 2 | 22.22% | |
| 2 | 0.20% | 1 | 11.11% | |
| 2 | 0.20% | 1 | 11.11% | |
| 1 | 0.10% | 1 | 11.11% | |
| Total | 987 | 9 |
| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Daniel Tang | 878 | 88.96% | 1 | 11.11% |
| Viresh Kumar | 64 | 6.48% | 1 | 11.11% |
| Afzal Mohammed | 20 | 2.03% | 1 | 11.11% |
| Alexander Shiyan | 16 | 1.62% | 1 | 11.11% |
| Daniel Lezcano | 4 | 0.41% | 2 | 22.22% |
| Thomas Gleixner | 2 | 0.20% | 1 | 11.11% |
| Rob Herring | 2 | 0.20% | 1 | 11.11% |
| Sudeep Holla | 1 | 0.10% | 1 | 11.11% |
| Total | 987 | 9 |
// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/clocksource/zevio-timer.c * * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> */ #include <linux/io.h> #include <linux/irq.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/clk.h> #include <linux/clockchips.h> #include <linux/cpumask.h> #include <linux/interrupt.h> #include <linux/slab.h> #define IO_CURRENT_VAL 0x00 #define IO_DIVIDER 0x04 #define IO_CONTROL 0x08 #define IO_TIMER1 0x00 #define IO_TIMER2 0x0C #define IO_MATCH_BEGIN 0x18 #define IO_MATCH(x) (IO_MATCH_BEGIN + ((x) << 2)) #define IO_INTR_STS 0x00 #define IO_INTR_ACK 0x00 #define IO_INTR_MSK 0x04 #define CNTL_STOP_TIMER (1 << 4) #define CNTL_RUN_TIMER (0 << 4) #define CNTL_INC (1 << 3) #define CNTL_DEC (0 << 3) #define CNTL_TOZERO 0 #define CNTL_MATCH(x) ((x) + 1) #define CNTL_FOREVER 7 /* There are 6 match registers but we only use one. */ #define TIMER_MATCH 0 #define TIMER_INTR_MSK (1 << (TIMER_MATCH)) #define TIMER_INTR_ALL 0x3F struct zevio_timer { void __iomem *base; void __iomem *timer1, *timer2; void __iomem *interrupt_regs; struct clk *clk; struct clock_event_device clkevt; char clocksource_name[64]; char clockevent_name[64]; }; static int zevio_timer_set_event(unsigned long delta, struct clock_event_device *dev) { struct zevio_timer *timer = container_of(dev, struct zevio_timer, clkevt); writel(delta, timer->timer1 + IO_CURRENT_VAL); writel(CNTL_RUN_TIMER | CNTL_DEC | CNTL_MATCH(TIMER_MATCH), timer->timer1 + IO_CONTROL); return 0; } static int zevio_timer_shutdown(struct clock_event_device *dev) { struct zevio_timer *timer = container_of(dev, struct zevio_timer, clkevt); /* Disable timer interrupts */ writel(0, timer->interrupt_regs + IO_INTR_MSK); writel(TIMER_INTR_ALL, timer->interrupt_regs + IO_INTR_ACK); /* Stop timer */ writel(CNTL_STOP_TIMER, timer->timer1 + IO_CONTROL); return 0; } static int zevio_timer_set_oneshot(struct clock_event_device *dev) { struct zevio_timer *timer = container_of(dev, struct zevio_timer, clkevt); /* Enable timer interrupts */ writel(TIMER_INTR_MSK, timer->interrupt_regs + IO_INTR_MSK); writel(TIMER_INTR_ALL, timer->interrupt_regs + IO_INTR_ACK); return 0; } static irqreturn_t zevio_timer_interrupt(int irq, void *dev_id) { struct zevio_timer *timer = dev_id; u32 intr; intr = readl(timer->interrupt_regs + IO_INTR_ACK); if (!(intr & TIMER_INTR_MSK)) return IRQ_NONE; writel(TIMER_INTR_MSK, timer->interrupt_regs + IO_INTR_ACK); writel(CNTL_STOP_TIMER, timer->timer1 + IO_CONTROL); if (timer->clkevt.event_handler) timer->clkevt.event_handler(&timer->clkevt); return IRQ_HANDLED; } static int __init zevio_timer_add(struct device_node *node) { struct zevio_timer *timer; struct resource res; int irqnr, ret; timer = kzalloc(sizeof(*timer), GFP_KERNEL); if (!timer) return -ENOMEM; timer->base = of_iomap(node, 0); if (!timer->base) { ret = -EINVAL; goto error_free; } timer->timer1 = timer->base + IO_TIMER1; timer->timer2 = timer->base + IO_TIMER2; timer->clk = of_clk_get(node, 0); if (IS_ERR(timer->clk)) { ret = PTR_ERR(timer->clk); pr_err("Timer clock not found! (error %d)\n", ret); goto error_unmap; } timer->interrupt_regs = of_iomap(node, 1); irqnr = irq_of_parse_and_map(node, 0); of_address_to_resource(node, 0, &res); scnprintf(timer->clocksource_name, sizeof(timer->clocksource_name), "%llx.%pOFn_clocksource", (unsigned long long)res.start, node); scnprintf(timer->clockevent_name, sizeof(timer->clockevent_name), "%llx.%pOFn_clockevent", (unsigned long long)res.start, node); if (timer->interrupt_regs && irqnr) { timer->clkevt.name = timer->clockevent_name; timer->clkevt.set_next_event = zevio_timer_set_event; timer->clkevt.set_state_shutdown = zevio_timer_shutdown; timer->clkevt.set_state_oneshot = zevio_timer_set_oneshot; timer->clkevt.tick_resume = zevio_timer_set_oneshot; timer->clkevt.rating = 200; timer->clkevt.cpumask = cpu_possible_mask; timer->clkevt.features = CLOCK_EVT_FEAT_ONESHOT; timer->clkevt.irq = irqnr; writel(CNTL_STOP_TIMER, timer->timer1 + IO_CONTROL); writel(0, timer->timer1 + IO_DIVIDER); /* Start with timer interrupts disabled */ writel(0, timer->interrupt_regs + IO_INTR_MSK); writel(TIMER_INTR_ALL, timer->interrupt_regs + IO_INTR_ACK); /* Interrupt to occur when timer value matches 0 */ writel(0, timer->base + IO_MATCH(TIMER_MATCH)); if (request_irq(irqnr, zevio_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, timer->clockevent_name, timer)) { pr_err("%s: request_irq() failed\n", timer->clockevent_name); } clockevents_config_and_register(&timer->clkevt, clk_get_rate(timer->clk), 0x0001, 0xffff); pr_info("Added %s as clockevent\n", timer->clockevent_name); } writel(CNTL_STOP_TIMER, timer->timer2 + IO_CONTROL); writel(0, timer->timer2 + IO_CURRENT_VAL); writel(0, timer->timer2 + IO_DIVIDER); writel(CNTL_RUN_TIMER | CNTL_FOREVER | CNTL_INC, timer->timer2 + IO_CONTROL); clocksource_mmio_init(timer->timer2 + IO_CURRENT_VAL, timer->clocksource_name, clk_get_rate(timer->clk), 200, 16, clocksource_mmio_readw_up); pr_info("Added %s as clocksource\n", timer->clocksource_name); return 0; error_unmap: iounmap(timer->base); error_free: kfree(timer); return ret; } static int __init zevio_timer_init(struct device_node *node) { return zevio_timer_add(node); } TIMER_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_init);