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Date: Fri, 7 Aug 2015 15:56:01 +0200
From: Hans Ulli Kroll <ulli.kroll@...glemail.com>
To: arm@...nel.org
Cc: linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
Olof Johansson <olof@...om.net>,
Roman Yeryomin <roman@...em.lv>,
Hans Ulli Kroll <ulli.kroll@...glemail.com>
Subject: [PATCH 1/3] ARM:Gemini:Add missing register definitions for gemini timer
Add missing register defintions for the gemini clocksource
Also do some #define' cleanup to make the code more readable.
Signed-off-by: Hans Ulli Kroll <ulli.kroll@...glemail.com>
---
arch/arm/mach-gemini/include/mach/hardware.h | 3 -
arch/arm/mach-gemini/time.c | 85 ++++++++++++++++++----------
2 files changed, 55 insertions(+), 33 deletions(-)
diff --git a/arch/arm/mach-gemini/include/mach/hardware.h b/arch/arm/mach-gemini/include/mach/hardware.h
index 98e7b0f..f0390f1 100644
--- a/arch/arm/mach-gemini/include/mach/hardware.h
+++ b/arch/arm/mach-gemini/include/mach/hardware.h
@@ -57,9 +57,6 @@
#define GEMINI_USB1_BASE 0x69000000
#define GEMINI_BIG_ENDIAN_BASE 0x80000000
-#define GEMINI_TIMER1_BASE GEMINI_TIMER_BASE
-#define GEMINI_TIMER2_BASE (GEMINI_TIMER_BASE + 0x10)
-#define GEMINI_TIMER3_BASE (GEMINI_TIMER_BASE + 0x20)
/*
* UART Clock when System clk is 150MHz
diff --git a/arch/arm/mach-gemini/time.c b/arch/arm/mach-gemini/time.c
index b57d367..fd751b1 100644
--- a/arch/arm/mach-gemini/time.c
+++ b/arch/arm/mach-gemini/time.c
@@ -19,21 +19,46 @@
/*
* 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_1_CR_ENABLE (1 << 0)
-#define TIMER_1_CR_CLOCK (1 << 1)
-#define TIMER_1_CR_INT (1 << 2)
-#define TIMER_2_CR_ENABLE (1 << 3)
-#define TIMER_2_CR_CLOCK (1 << 4)
-#define TIMER_2_CR_INT (1 << 5)
-#define TIMER_3_CR_ENABLE (1 << 6)
-#define TIMER_3_CR_CLOCK (1 << 7)
-#define TIMER_3_CR_INT (1 << 8)
+
+#define TIMER1_BASE GEMINI_TIMER_BASE
+#define TIMER2_BASE (GEMINI_TIMER_BASE + 0x10)
+#define TIMER3_BASE (GEMINI_TIMER_BASE + 0x20)
+
+#define TIMER_COUNT(BASE) (IO_ADDRESS(BASE) + 0x00)
+#define TIMER_LOAD(BASE) (IO_ADDRESS(BASE) + 0x04)
+#define TIMER_MATCH1(BASE) (IO_ADDRESS(BASE) + 0x08)
+#define TIMER_MATCH2(BASE) (IO_ADDRESS(BASE) + 0x0C)
+#define TIMER_CR (IO_ADDRESS(GEMINI_TIMER_BASE) + 0x30)
+#define TIMER_INTR_STATE (IO_ADDRESS(GEMINI_TIMER_BASE) + 0x34)
+#define TIMER_INTR_MASK (IO_ADDRESS(GEMINI_TIMER_BASE) + 0x38)
+
+#define TIMER_1_CR_ENABLE (1 << 0)
+#define TIMER_1_CR_CLOCK (1 << 1)
+#define TIMER_1_CR_INT (1 << 2)
+#define TIMER_2_CR_ENABLE (1 << 3)
+#define TIMER_2_CR_CLOCK (1 << 4)
+#define TIMER_2_CR_INT (1 << 5)
+#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_DEFAULT_FLAGS (TIMER_1_CR_UPDOWN | \
+ TIMER_3_CR_ENABLE | \
+ TIMER_3_CR_UPDOWN)
+
+#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;
@@ -42,19 +67,19 @@ static int gemini_timer_set_next_event(unsigned long cycles,
{
u32 cr;
- cr = readl(TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
+ cr = readl(TIMER_CR);
/* 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)));
+ writel(cr, TIMER_CR);
/* Set next event */
- writel(cycles, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE)));
- writel(cycles, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE)));
+ writel(cycles, TIMER_COUNT(TIMER2_BASE));
+ writel(cycles, TIMER_LOAD(TIMER2_BASE));
cr |= TIMER_2_CR_ENABLE;
cr |= TIMER_2_CR_INT;
- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
+ writel(cr, TIMER_CR);
return 0;
}
@@ -67,10 +92,10 @@ static int gemini_timer_shutdown(struct clock_event_device *evt)
* Disable also for oneshot: the set_next() call will arm the timer
* instead.
*/
- cr = readl(TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
+ cr = readl(TIMER_CR);
cr &= ~TIMER_2_CR_ENABLE;
cr &= ~TIMER_2_CR_INT;
- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
+ writel(cr, TIMER_CR);
return 0;
}
@@ -80,12 +105,12 @@ static int gemini_timer_set_periodic(struct clock_event_device *evt)
u32 cr;
/* 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)));
+ writel(period, TIMER_COUNT(TIMER2_BASE));
+ writel(period, TIMER_LOAD(TIMER2_BASE));
+ cr = readl(TIMER_CR);
cr |= TIMER_2_CR_ENABLE;
cr |= TIMER_2_CR_INT;
- writel(cr, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
+ writel(cr, TIMER_CR);
return 0;
}
@@ -155,10 +180,10 @@ void __init gemini_timer_init(void)
setup_irq(IRQ_TIMER2, &gemini_timer_irq);
/* 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)),
+ writel(0xffffffff, TIMER_COUNT(TIMER1_BASE));
+ writel(0xffffffff, TIMER_LOAD(TIMER1_BASE));
+ writel(TIMER_1_CR_ENABLE, TIMER_CR);
+ if (clocksource_mmio_init(TIMER_COUNT(TIMER1_BASE),
"TIMER1", tick_rate, 300, 32,
clocksource_mmio_readl_up))
pr_err("timer: failed to initialize gemini clock source\n");
--
2.4.6
--
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