diff options
Diffstat (limited to 'target/linux/gemini/patches-3.18/160-gemini-timers.patch')
| -rw-r--r-- | target/linux/gemini/patches-3.18/160-gemini-timers.patch | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/target/linux/gemini/patches-3.18/160-gemini-timers.patch b/target/linux/gemini/patches-3.18/160-gemini-timers.patch deleted file mode 100644 index 4b0edb45d1..0000000000 --- a/target/linux/gemini/patches-3.18/160-gemini-timers.patch +++ /dev/null @@ -1,243 +0,0 @@ ---- a/arch/arm/mach-gemini/time.c -+++ b/arch/arm/mach-gemini/time.c -@@ -15,15 +15,18 @@ - #include <asm/mach/time.h> - #include <linux/clockchips.h> - #include <linux/clocksource.h> -+#include <linux/sched_clock.h> - - /* - * Register definitions for the timers - */ --#define TIMER_COUNT(BASE_ADDR) (BASE_ADDR + 0x00) --#define TIMER_LOAD(BASE_ADDR) (BASE_ADDR + 0x04) --#define TIMER_MATCH1(BASE_ADDR) (BASE_ADDR + 0x08) --#define TIMER_MATCH2(BASE_ADDR) (BASE_ADDR + 0x0C) --#define TIMER_CR(BASE_ADDR) (BASE_ADDR + 0x30) -+#define TIMER_COUNT(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x00) -+#define TIMER_LOAD(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x04) -+#define TIMER_MATCH1(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x08) -+#define TIMER_MATCH2(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x0C) -+#define TIMER_CR(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x30) -+#define TIMER_INTR_STATE(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x34) -+#define TIMER_INTR_MASK(BASE_ADDR) (IO_ADDRESS(BASE_ADDR) + 0x38) - - #define TIMER_1_CR_ENABLE (1 << 0) - #define TIMER_1_CR_CLOCK (1 << 1) -@@ -34,27 +37,38 @@ - #define TIMER_3_CR_ENABLE (1 << 6) - #define TIMER_3_CR_CLOCK (1 << 7) - #define TIMER_3_CR_INT (1 << 8) -+#define TIMER_1_CR_UPDOWN (1 << 9) -+#define TIMER_2_CR_UPDOWN (1 << 10) -+#define TIMER_3_CR_UPDOWN (1 << 11) -+ -+#define TIMER_1_INT_MATCH1 (1 << 0) -+#define TIMER_1_INT_MATCH2 (1 << 1) -+#define TIMER_1_INT_OVERFLOW (1 << 2) -+#define TIMER_2_INT_MATCH1 (1 << 3) -+#define TIMER_2_INT_MATCH2 (1 << 4) -+#define TIMER_2_INT_OVERFLOW (1 << 5) -+#define TIMER_3_INT_MATCH1 (1 << 6) -+#define TIMER_3_INT_MATCH2 (1 << 7) -+#define TIMER_3_INT_OVERFLOW (1 << 8) -+#define TIMER_INT_ALL_MASK 0x1ff - - static unsigned int tick_rate; - -+static u64 notrace gemini_read_sched_clock(void) -+{ -+ return readl(TIMER_COUNT(GEMINI_TIMER3_BASE)); -+} -+ - static int gemini_timer_set_next_event(unsigned long cycles, - struct clock_event_device *evt) - { - u32 cr; - -- cr = readl(TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -- -- /* This may be overdoing it, feel free to test without this */ -- cr &= ~TIMER_2_CR_ENABLE; -- cr &= ~TIMER_2_CR_INT; -- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -- -- /* Set next event */ -- writel(cycles, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE))); -- writel(cycles, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE))); -- cr |= TIMER_2_CR_ENABLE; -- cr |= TIMER_2_CR_INT; -- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -+ /* Setup the match register */ -+ cr = readl(TIMER_COUNT(GEMINI_TIMER1_BASE)); -+ writel(cr + cycles, TIMER_MATCH1(GEMINI_TIMER1_BASE)); -+ if (readl(TIMER_COUNT(GEMINI_TIMER1_BASE)) - cr > cycles) -+ return -ETIME; - - return 0; - } -@@ -66,48 +80,68 @@ static void gemini_timer_set_mode(enum c - u32 cr; - - switch (mode) { -- case CLOCK_EVT_MODE_PERIODIC: -- /* Start the timer */ -- writel(period, -- TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE))); -- writel(period, -- TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE))); -- cr = readl(TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -- cr |= TIMER_2_CR_ENABLE; -- cr |= TIMER_2_CR_INT; -- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -+ case CLOCK_EVT_MODE_PERIODIC: -+ /* Stop timer and interrupt. */ -+ cr = readl(TIMER_CR(GEMINI_TIMER_BASE)); -+ cr &= ~(TIMER_1_CR_ENABLE | TIMER_1_CR_INT); -+ writel(cr, TIMER_CR(GEMINI_TIMER_BASE)); -+ -+ /* Setup timer to fire at 1/HZ intervals. */ -+ cr = 0xffffffff - (period - 1); -+ writel(cr, TIMER_COUNT(GEMINI_TIMER1_BASE)); -+ writel(cr, TIMER_LOAD(GEMINI_TIMER1_BASE)); -+ -+ /* enable interrupt on overflaw */ -+ cr = readl(TIMER_INTR_MASK(GEMINI_TIMER_BASE)); -+ cr &= ~(TIMER_1_INT_MATCH1 | TIMER_1_INT_MATCH2); -+ cr |= TIMER_1_INT_OVERFLOW; -+ writel(cr, TIMER_INTR_MASK(GEMINI_TIMER_BASE)); -+ -+ /* start the timer */ -+ cr = readl(TIMER_CR(GEMINI_TIMER_BASE)); -+ cr |= TIMER_1_CR_ENABLE | TIMER_1_CR_INT; -+ writel(cr, TIMER_CR(GEMINI_TIMER_BASE)); - break; -+ - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: -- case CLOCK_EVT_MODE_SHUTDOWN: -+ case CLOCK_EVT_MODE_SHUTDOWN: -+ /* Stop timer and interrupt. */ -+ cr = readl(TIMER_CR(GEMINI_TIMER_BASE)); -+ cr &= ~(TIMER_1_CR_ENABLE | TIMER_1_CR_INT); -+ writel(cr, TIMER_CR(GEMINI_TIMER_BASE)); -+ -+ /* Setup counter start from 0 */ -+ writel(0, TIMER_COUNT(GEMINI_TIMER1_BASE)); -+ writel(0, TIMER_LOAD(GEMINI_TIMER1_BASE)); -+ -+ /* enable interrupt */ -+ cr = readl(TIMER_INTR_MASK(GEMINI_TIMER_BASE)); -+ cr &= ~(TIMER_1_INT_OVERFLOW | TIMER_1_INT_MATCH2); -+ cr |= TIMER_1_INT_MATCH1; -+ writel(cr, TIMER_INTR_MASK(GEMINI_TIMER_BASE)); -+ -+ /* start the timer */ -+ cr = readl(TIMER_CR(GEMINI_TIMER_BASE)); -+ cr |= TIMER_1_CR_ENABLE; -+ writel(cr, TIMER_CR(GEMINI_TIMER_BASE)); -+ break; -+ - case CLOCK_EVT_MODE_RESUME: -- /* -- * Disable also for oneshot: the set_next() call will -- * arm the timer instead. -- */ -- cr = readl(TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -- cr &= ~TIMER_2_CR_ENABLE; -- cr &= ~TIMER_2_CR_INT; -- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); - break; -- default: -- break; - } - } - --/* Use TIMER2 as clock event */ - static struct clock_event_device gemini_clockevent = { -- .name = "TIMER2", -- .rating = 300, /* Reasonably fast and accurate clock event */ -- .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, -- .set_next_event = gemini_timer_set_next_event, -- .set_mode = gemini_timer_set_mode, -+ .name = "gemini_timer_1", -+ .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, -+ .shift = 32, -+ .rating = 300, -+ .set_next_event = gemini_timer_set_next_event, -+ .set_mode = gemini_timer_set_mode, - }; - --/* -- * IRQ handler for the timer -- */ --static irqreturn_t gemini_timer_interrupt(int irq, void *dev_id) -+static irqreturn_t gemini_timer_intr(int irq, void *dev_id) - { - struct clock_event_device *evt = &gemini_clockevent; - -@@ -116,14 +150,11 @@ static irqreturn_t gemini_timer_interrup - } - - static struct irqaction gemini_timer_irq = { -- .name = "Gemini Timer Tick", -- .flags = IRQF_TIMER, -- .handler = gemini_timer_interrupt, -+ .name = "gemini timer 1", -+ .flags = IRQF_DISABLED | IRQF_TIMER, -+ .handler = gemini_timer_intr, - }; - --/* -- * Set up timer interrupt, and return the current time in seconds. -- */ - void __init gemini_timer_init(void) - { - u32 reg_v; -@@ -151,20 +182,35 @@ void __init gemini_timer_init(void) - } - - /* -- * Make irqs happen for the system timer -+ * Reset the interrupt mask and status - */ -- setup_irq(IRQ_TIMER2, &gemini_timer_irq); -+ writel(TIMER_INT_ALL_MASK, TIMER_INTR_MASK(GEMINI_TIMER_BASE)); -+ writel(0, TIMER_INTR_STATE(GEMINI_TIMER_BASE)); -+ writel(TIMER_1_CR_UPDOWN | TIMER_3_CR_ENABLE | TIMER_3_CR_UPDOWN, -+ TIMER_CR(GEMINI_TIMER_BASE)); - -- /* Enable and use TIMER1 as clock source */ -- writel(0xffffffff, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER1_BASE))); -- writel(0xffffffff, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER1_BASE))); -- writel(TIMER_1_CR_ENABLE, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); -- if (clocksource_mmio_init(TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER1_BASE)), -- "TIMER1", tick_rate, 300, 32, -- clocksource_mmio_readl_up)) -- pr_err("timer: failed to initialize gemini clock source\n"); -+ /* -+ * Setup free-running clocksource timer (interrupts -+ * disabled.) -+ */ -+ writel(0, TIMER_COUNT(GEMINI_TIMER3_BASE)); -+ writel(0, TIMER_LOAD(GEMINI_TIMER3_BASE)); -+ writel(0, TIMER_MATCH1(GEMINI_TIMER3_BASE)); -+ writel(0, TIMER_MATCH2(GEMINI_TIMER3_BASE)); -+ clocksource_mmio_init(TIMER_COUNT(GEMINI_TIMER3_BASE), -+ "gemini_clocksource", tick_rate, -+ 300, 32, clocksource_mmio_readl_up); -+ sched_clock_register(gemini_read_sched_clock, 32, tick_rate); - -- /* Configure and register the clockevent */ -+ /* -+ * Setup clockevent timer (interrupt-driven.) -+ */ -+ writel(0, TIMER_COUNT(GEMINI_TIMER1_BASE)); -+ writel(0, TIMER_LOAD(GEMINI_TIMER1_BASE)); -+ writel(0, TIMER_MATCH1(GEMINI_TIMER1_BASE)); -+ writel(0, TIMER_MATCH2(GEMINI_TIMER1_BASE)); -+ setup_irq(IRQ_TIMER1, &gemini_timer_irq); -+ gemini_clockevent.cpumask = cpumask_of(0); - clockevents_config_and_register(&gemini_clockevent, tick_rate, - 1, 0xffffffff); - } |