[PATCH v2 0/7] Updates for Zynq's timer driver

[PATCH v2 0/7] Updates for Zynq's timer driver

[Soren Brinkmann]

I started to put some effort on syncing the Xilinx Linux tree with mainline and
the timer driver is my first victim.
Most commits are fixing style issues or clean up. Functionality is touched only
in patches #2 and #7.

Some patches are present in almost identically in the Xilinx Linux tree and I
took over 'Acked-by' lines from those commits.

To repost the patch with the arm-kernel list included I made this a v2 to avoid
confusion about which series is the current one, though the patches are the same
as the ones posted before on lkml only.
I added Josh's 'Reviewed-by' line though.

v2:
 - extend receipient list
 - adding reviewed by lines to commit messages

	Soren


Soren Brinkmann (7):
  arm: zynq: timer: Replace PSS through PS
  arm: zynq: timer: Remove unnecessary register write
  arm: zynq: timer: Remove unused #defines
  arm: zynq: timer: Align columns
  arm: zynq: timer: Remove redundant #includes
  arm: zynq: timer: Fix comment style
  arm: zynq: timer: Set clock_event cpumask

 arch/arm/mach-zynq/common.c |   6 +-
 arch/arm/mach-zynq/common.h |   2 +-
 arch/arm/mach-zynq/timer.c  | 150 +++++++++++++++++++++-----------------------
 3 files changed, 75 insertions(+), 83 deletions(-)

-- 
1.8.0.2

[PATCH v2 1/7] arm: zynq: timer: Replace PSS through PS

[Soren Brinkmann]

The acronym PSS is deprecated by Xilinx. The correct term, which is
also used in Xilinx documentation is PS (processing system).
This is just a search and replace:
 - s/PSS/PS/g
 - s/pss/ps/g

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/common.c |   6 +-
 arch/arm/mach-zynq/common.h |   2 +-
 arch/arm/mach-zynq/timer.c  | 134 ++++++++++++++++++++++----------------------
 3 files changed, 71 insertions(+), 71 deletions(-)

diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index e16d4be..892f65e 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -90,13 +90,13 @@ static void __init xilinx_zynq_timer_init(void)
 
 	xilinx_zynq_clocks_init(slcr);
 
-	xttcpss_timer_init();
+	xttcps_timer_init();
 }
 
 /*
  * Instantiate and initialize the system timer structure
  */
-static struct sys_timer xttcpss_sys_timer = {
+static struct sys_timer xttcps_sys_timer = {
 	.init		= xilinx_zynq_timer_init,
 };
 
@@ -120,6 +120,6 @@ MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
 	.init_irq	= xilinx_irq_init,
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= xilinx_init_machine,
-	.timer		= &xttcpss_sys_timer,
+	.timer		= &xttcps_sys_timer,
 	.dt_compat	= xilinx_dt_match,
 MACHINE_END
diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
index 954b91c..8b4dbba 100644
--- a/arch/arm/mach-zynq/common.h
+++ b/arch/arm/mach-zynq/common.h
@@ -17,6 +17,6 @@
 #ifndef __MACH_ZYNQ_COMMON_H__
 #define __MACH_ZYNQ_COMMON_H__
 
-void __init xttcpss_timer_init(void);
+void __init xttcps_timer_init(void);
 
 #endif
diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index de3df28..570491d 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -35,17 +35,17 @@
  * Timer Register Offset Definitions of Timer 1, Increment base address by 4
  * and use same offsets for Timer 2
  */
-#define XTTCPSS_CLK_CNTRL_OFFSET	0x00 /* Clock Control Reg, RW */
-#define XTTCPSS_CNT_CNTRL_OFFSET	0x0C /* Counter Control Reg, RW */
-#define XTTCPSS_COUNT_VAL_OFFSET	0x18 /* Counter Value Reg, RO */
-#define XTTCPSS_INTR_VAL_OFFSET		0x24 /* Interval Count Reg, RW */
-#define XTTCPSS_MATCH_1_OFFSET		0x30 /* Match 1 Value Reg, RW */
-#define XTTCPSS_MATCH_2_OFFSET		0x3C /* Match 2 Value Reg, RW */
-#define XTTCPSS_MATCH_3_OFFSET		0x48 /* Match 3 Value Reg, RW */
-#define XTTCPSS_ISR_OFFSET		0x54 /* Interrupt Status Reg, RO */
-#define XTTCPSS_IER_OFFSET		0x60 /* Interrupt Enable Reg, RW */
-
-#define XTTCPSS_CNT_CNTRL_DISABLE_MASK	0x1
+#define XTTCPS_CLK_CNTRL_OFFSET	0x00 /* Clock Control Reg, RW */
+#define XTTCPS_CNT_CNTRL_OFFSET	0x0C /* Counter Control Reg, RW */
+#define XTTCPS_COUNT_VAL_OFFSET	0x18 /* Counter Value Reg, RO */
+#define XTTCPS_INTR_VAL_OFFSET		0x24 /* Interval Count Reg, RW */
+#define XTTCPS_MATCH_1_OFFSET		0x30 /* Match 1 Value Reg, RW */
+#define XTTCPS_MATCH_2_OFFSET		0x3C /* Match 2 Value Reg, RW */
+#define XTTCPS_MATCH_3_OFFSET		0x48 /* Match 3 Value Reg, RW */
+#define XTTCPS_ISR_OFFSET		0x54 /* Interrupt Status Reg, RO */
+#define XTTCPS_IER_OFFSET		0x60 /* Interrupt Enable Reg, RW */
+
+#define XTTCPS_CNT_CNTRL_DISABLE_MASK	0x1
 
 /* Setup the timers to use pre-scaling, using a fixed value for now that will
  * work across most input frequency, but it may need to be more dynamic
@@ -57,72 +57,72 @@
 #define CNT_CNTRL_RESET		(1<<4)
 
 /**
- * struct xttcpss_timer - This definition defines local timer structure
+ * struct xttcps_timer - This definition defines local timer structure
  *
  * @base_addr:	Base address of timer
  **/
-struct xttcpss_timer {
+struct xttcps_timer {
 	void __iomem	*base_addr;
 };
 
-struct xttcpss_timer_clocksource {
-	struct xttcpss_timer	xttc;
+struct xttcps_timer_clocksource {
+	struct xttcps_timer	xttc;
 	struct clocksource	cs;
 };
 
-#define to_xttcpss_timer_clksrc(x) \
-		container_of(x, struct xttcpss_timer_clocksource, cs)
+#define to_xttcps_timer_clksrc(x) \
+		container_of(x, struct xttcps_timer_clocksource, cs)
 
-struct xttcpss_timer_clockevent {
-	struct xttcpss_timer		xttc;
+struct xttcps_timer_clockevent {
+	struct xttcps_timer		xttc;
 	struct clock_event_device	ce;
 	struct clk			*clk;
 };
 
-#define to_xttcpss_timer_clkevent(x) \
-		container_of(x, struct xttcpss_timer_clockevent, ce)
+#define to_xttcps_timer_clkevent(x) \
+		container_of(x, struct xttcps_timer_clockevent, ce)
 
 /**
- * xttcpss_set_interval - Set the timer interval value
+ * xttcps_set_interval - Set the timer interval value
  *
  * @timer:	Pointer to the timer instance
  * @cycles:	Timer interval ticks
  **/
-static void xttcpss_set_interval(struct xttcpss_timer *timer,
+static void xttcps_set_interval(struct xttcps_timer *timer,
 					unsigned long cycles)
 {
 	u32 ctrl_reg;
 
 	/* Disable the counter, set the counter value  and re-enable counter */
-	ctrl_reg = __raw_readl(timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
-	ctrl_reg |= XTTCPSS_CNT_CNTRL_DISABLE_MASK;
-	__raw_writel(ctrl_reg, timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+	ctrl_reg = __raw_readl(timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
+	ctrl_reg |= XTTCPS_CNT_CNTRL_DISABLE_MASK;
+	__raw_writel(ctrl_reg, timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 
-	__raw_writel(cycles, timer->base_addr + XTTCPSS_INTR_VAL_OFFSET);
+	__raw_writel(cycles, timer->base_addr + XTTCPS_INTR_VAL_OFFSET);
 
 	/* Reset the counter (0x10) so that it starts from 0, one-shot
 	   mode makes this needed for timing to be right. */
 	ctrl_reg |= CNT_CNTRL_RESET;
-	ctrl_reg &= ~XTTCPSS_CNT_CNTRL_DISABLE_MASK;
-	__raw_writel(ctrl_reg, timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+	ctrl_reg &= ~XTTCPS_CNT_CNTRL_DISABLE_MASK;
+	__raw_writel(ctrl_reg, timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 }
 
 /**
- * xttcpss_clock_event_interrupt - Clock event timer interrupt handler
+ * xttcps_clock_event_interrupt - Clock event timer interrupt handler
  *
  * @irq:	IRQ number of the Timer
- * @dev_id:	void pointer to the xttcpss_timer instance
+ * @dev_id:	void pointer to the xttcps_timer instance
  *
  * returns: Always IRQ_HANDLED - success
  **/
-static irqreturn_t xttcpss_clock_event_interrupt(int irq, void *dev_id)
+static irqreturn_t xttcps_clock_event_interrupt(int irq, void *dev_id)
 {
-	struct xttcpss_timer_clockevent *xttce = dev_id;
-	struct xttcpss_timer *timer = &xttce->xttc;
+	struct xttcps_timer_clockevent *xttce = dev_id;
+	struct xttcps_timer *timer = &xttce->xttc;
 
 	/* Acknowledge the interrupt and call event handler */
-	__raw_writel(__raw_readl(timer->base_addr + XTTCPSS_ISR_OFFSET),
-			timer->base_addr + XTTCPSS_ISR_OFFSET);
+	__raw_writel(__raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET),
+			timer->base_addr + XTTCPS_ISR_OFFSET);
 
 	xttce->ce.event_handler(&xttce->ce);
 
@@ -136,46 +136,46 @@ static irqreturn_t xttcpss_clock_event_interrupt(int irq, void *dev_id)
  **/
 static cycle_t __xttc_clocksource_read(struct clocksource *cs)
 {
-	struct xttcpss_timer *timer = &to_xttcpss_timer_clksrc(cs)->xttc;
+	struct xttcps_timer *timer = &to_xttcps_timer_clksrc(cs)->xttc;
 
 	return (cycle_t)__raw_readl(timer->base_addr +
-				XTTCPSS_COUNT_VAL_OFFSET);
+				XTTCPS_COUNT_VAL_OFFSET);
 }
 
 /**
- * xttcpss_set_next_event - Sets the time interval for next event
+ * xttcps_set_next_event - Sets the time interval for next event
  *
  * @cycles:	Timer interval ticks
  * @evt:	Address of clock event instance
  *
  * returns: Always 0 - success
  **/
-static int xttcpss_set_next_event(unsigned long cycles,
+static int xttcps_set_next_event(unsigned long cycles,
 					struct clock_event_device *evt)
 {
-	struct xttcpss_timer_clockevent *xttce = to_xttcpss_timer_clkevent(evt);
-	struct xttcpss_timer *timer = &xttce->xttc;
+	struct xttcps_timer_clockevent *xttce = to_xttcps_timer_clkevent(evt);
+	struct xttcps_timer *timer = &xttce->xttc;
 
-	xttcpss_set_interval(timer, cycles);
+	xttcps_set_interval(timer, cycles);
 	return 0;
 }
 
 /**
- * xttcpss_set_mode - Sets the mode of timer
+ * xttcps_set_mode - Sets the mode of timer
  *
  * @mode:	Mode to be set
  * @evt:	Address of clock event instance
  **/
-static void xttcpss_set_mode(enum clock_event_mode mode,
+static void xttcps_set_mode(enum clock_event_mode mode,
 					struct clock_event_device *evt)
 {
-	struct xttcpss_timer_clockevent *xttce = to_xttcpss_timer_clkevent(evt);
-	struct xttcpss_timer *timer = &xttce->xttc;
+	struct xttcps_timer_clockevent *xttce = to_xttcps_timer_clkevent(evt);
+	struct xttcps_timer *timer = &xttce->xttc;
 	u32 ctrl_reg;
 
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
-		xttcpss_set_interval(timer,
+		xttcps_set_interval(timer,
 				     DIV_ROUND_CLOSEST(clk_get_rate(xttce->clk),
 						       PRESCALE * HZ));
 		break;
@@ -183,17 +183,17 @@ static void xttcpss_set_mode(enum clock_event_mode mode,
 	case CLOCK_EVT_MODE_UNUSED:
 	case CLOCK_EVT_MODE_SHUTDOWN:
 		ctrl_reg = __raw_readl(timer->base_addr +
-					XTTCPSS_CNT_CNTRL_OFFSET);
-		ctrl_reg |= XTTCPSS_CNT_CNTRL_DISABLE_MASK;
+					XTTCPS_CNT_CNTRL_OFFSET);
+		ctrl_reg |= XTTCPS_CNT_CNTRL_DISABLE_MASK;
 		__raw_writel(ctrl_reg,
-				timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+				timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 		break;
 	case CLOCK_EVT_MODE_RESUME:
 		ctrl_reg = __raw_readl(timer->base_addr +
-					XTTCPSS_CNT_CNTRL_OFFSET);
-		ctrl_reg &= ~XTTCPSS_CNT_CNTRL_DISABLE_MASK;
+					XTTCPS_CNT_CNTRL_OFFSET);
+		ctrl_reg &= ~XTTCPS_CNT_CNTRL_DISABLE_MASK;
 		__raw_writel(ctrl_reg,
-				timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+				timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 		break;
 	}
 }
@@ -201,7 +201,7 @@ static void xttcpss_set_mode(enum clock_event_mode mode,
 static void __init zynq_ttc_setup_clocksource(struct device_node *np,
 					     void __iomem *base)
 {
-	struct xttcpss_timer_clocksource *ttccs;
+	struct xttcps_timer_clocksource *ttccs;
 	struct clk *clk;
 	int err;
 	u32 reg;
@@ -230,11 +230,11 @@ static void __init zynq_ttc_setup_clocksource(struct device_node *np,
 	ttccs->cs.mask = CLOCKSOURCE_MASK(16);
 	ttccs->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
-	__raw_writel(0x0,  ttccs->xttc.base_addr + XTTCPSS_IER_OFFSET);
+	__raw_writel(0x0,  ttccs->xttc.base_addr + XTTCPS_IER_OFFSET);
 	__raw_writel(CLK_CNTRL_PRESCALE | CLK_CNTRL_PRESCALE_EN,
-		     ttccs->xttc.base_addr + XTTCPSS_CLK_CNTRL_OFFSET);
+		     ttccs->xttc.base_addr + XTTCPS_CLK_CNTRL_OFFSET);
 	__raw_writel(CNT_CNTRL_RESET,
-		     ttccs->xttc.base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+		     ttccs->xttc.base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 
 	err = clocksource_register_hz(&ttccs->cs, clk_get_rate(clk) / PRESCALE);
 	if (WARN_ON(err))
@@ -244,7 +244,7 @@ static void __init zynq_ttc_setup_clocksource(struct device_node *np,
 static void __init zynq_ttc_setup_clockevent(struct device_node *np,
 					    void __iomem *base)
 {
-	struct xttcpss_timer_clockevent *ttcce;
+	struct xttcps_timer_clockevent *ttcce;
 	int err, irq;
 	u32 reg;
 
@@ -272,17 +272,17 @@ static void __init zynq_ttc_setup_clockevent(struct device_node *np,
 
 	ttcce->ce.name = np->name;
 	ttcce->ce.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
-	ttcce->ce.set_next_event = xttcpss_set_next_event;
-	ttcce->ce.set_mode = xttcpss_set_mode;
+	ttcce->ce.set_next_event = xttcps_set_next_event;
+	ttcce->ce.set_mode = xttcps_set_mode;
 	ttcce->ce.rating = 200;
 	ttcce->ce.irq = irq;
 
-	__raw_writel(0x23, ttcce->xttc.base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+	__raw_writel(0x23, ttcce->xttc.base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 	__raw_writel(CLK_CNTRL_PRESCALE | CLK_CNTRL_PRESCALE_EN,
-		     ttcce->xttc.base_addr + XTTCPSS_CLK_CNTRL_OFFSET);
-	__raw_writel(0x1,  ttcce->xttc.base_addr + XTTCPSS_IER_OFFSET);
+		     ttcce->xttc.base_addr + XTTCPS_CLK_CNTRL_OFFSET);
+	__raw_writel(0x1,  ttcce->xttc.base_addr + XTTCPS_IER_OFFSET);
 
-	err = request_irq(irq, xttcpss_clock_event_interrupt, IRQF_TIMER,
+	err = request_irq(irq, xttcps_clock_event_interrupt, IRQF_TIMER,
 			  np->name, ttcce);
 	if (WARN_ON(err))
 		return;
@@ -301,12 +301,12 @@ static const __initconst struct of_device_id zynq_ttc_match[] = {
 };
 
 /**
- * xttcpss_timer_init - Initialize the timer
+ * xttcps_timer_init - Initialize the timer
  *
  * Initializes the timer hardware and register the clock source and clock event
  * timers with Linux kernal timer framework
  **/
-void __init xttcpss_timer_init(void)
+void __init xttcps_timer_init(void)
 {
 	struct device_node *np;
 
-- 
1.8.0.2

[PATCH v2 2/7] arm: zynq: timer: Remove unnecessary register write

[Soren Brinkmann]

Acknowedging an interrupt requires to read the interrupt register
only. The write was only required to work around a bug in
the QEMU implementation of the TTC, which is fixed.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 570491d..f1d224b 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -121,8 +121,7 @@ static irqreturn_t xttcps_clock_event_interrupt(int irq, void *dev_id)
 	struct xttcps_timer *timer = &xttce->xttc;
 
 	/* Acknowledge the interrupt and call event handler */
-	__raw_writel(__raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET),
-			timer->base_addr + XTTCPS_ISR_OFFSET);
+	__raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET);
 
 	xttce->ce.event_handler(&xttce->ce);
 
-- 
1.8.0.2

[PATCH v2 3/7] arm: zynq: timer: Remove unused #defines

[Soren Brinkmann]

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index f1d224b..80bf474 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -39,9 +39,6 @@
 #define XTTCPS_CNT_CNTRL_OFFSET	0x0C /* Counter Control Reg, RW */
 #define XTTCPS_COUNT_VAL_OFFSET	0x18 /* Counter Value Reg, RO */
 #define XTTCPS_INTR_VAL_OFFSET		0x24 /* Interval Count Reg, RW */
-#define XTTCPS_MATCH_1_OFFSET		0x30 /* Match 1 Value Reg, RW */
-#define XTTCPS_MATCH_2_OFFSET		0x3C /* Match 2 Value Reg, RW */
-#define XTTCPS_MATCH_3_OFFSET		0x48 /* Match 3 Value Reg, RW */
 #define XTTCPS_ISR_OFFSET		0x54 /* Interrupt Status Reg, RO */
 #define XTTCPS_IER_OFFSET		0x60 /* Interrupt Enable Reg, RW */
 
-- 
1.8.0.2

[PATCH v2 4/7] arm: zynq: timer: Align columns

[Soren Brinkmann]

Aligning the columns in a block of #defines, so that the values
are starting in the same colum on every line.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 80bf474..4b81ae1 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -35,9 +35,9 @@
  * Timer Register Offset Definitions of Timer 1, Increment base address by 4
  * and use same offsets for Timer 2
  */
-#define XTTCPS_CLK_CNTRL_OFFSET	0x00 /* Clock Control Reg, RW */
-#define XTTCPS_CNT_CNTRL_OFFSET	0x0C /* Counter Control Reg, RW */
-#define XTTCPS_COUNT_VAL_OFFSET	0x18 /* Counter Value Reg, RO */
+#define XTTCPS_CLK_CNTRL_OFFSET		0x00 /* Clock Control Reg, RW */
+#define XTTCPS_CNT_CNTRL_OFFSET		0x0C /* Counter Control Reg, RW */
+#define XTTCPS_COUNT_VAL_OFFSET		0x18 /* Counter Value Reg, RO */
 #define XTTCPS_INTR_VAL_OFFSET		0x24 /* Interval Count Reg, RW */
 #define XTTCPS_ISR_OFFSET		0x54 /* Interrupt Status Reg, RO */
 #define XTTCPS_IER_OFFSET		0x60 /* Interrupt Enable Reg, RW */
-- 
1.8.0.2

[PATCH v2 5/7] arm: zynq: timer: Remove redundant #includes

[Soren Brinkmann]

Some #includes are implicitly included through others, some are
just not needed.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 4b81ae1..2b23d0f 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -15,20 +15,12 @@
  * GNU General Public License for more details.
  */
 
-#include <linux/kernel.h>
-#include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/types.h>
-#include <linux/clocksource.h>
 #include <linux/clockchips.h>
-#include <linux/io.h>
-#include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/slab.h>
 #include <linux/clk-provider.h>
-
 #include "common.h"
 
 /*
-- 
1.8.0.2

[PATCH v2 6/7] arm: zynq: timer: Fix comment style

[Soren Brinkmann]

Fixing multi line comment style at two locations.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 2b23d0f..7b2e047 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -36,7 +36,8 @@
 
 #define XTTCPS_CNT_CNTRL_DISABLE_MASK	0x1
 
-/* Setup the timers to use pre-scaling, using a fixed value for now that will
+/*
+ * Setup the timers to use pre-scaling, using a fixed value for now that will
  * work across most input frequency, but it may need to be more dynamic
  */
 #define PRESCALE_EXPONENT	11	/* 2 ^ PRESCALE_EXPONENT = PRESCALE */
@@ -89,8 +90,10 @@ static void xttcps_set_interval(struct xttcps_timer *timer,
 
 	__raw_writel(cycles, timer->base_addr + XTTCPS_INTR_VAL_OFFSET);
 
-	/* Reset the counter (0x10) so that it starts from 0, one-shot
-	   mode makes this needed for timing to be right. */
+	/*
+	 * Reset the counter (0x10) so that it starts from 0, one-shot
+	 * mode makes this needed for timing to be right.
+	 */
 	ctrl_reg |= CNT_CNTRL_RESET;
 	ctrl_reg &= ~XTTCPS_CNT_CNTRL_DISABLE_MASK;
 	__raw_writel(ctrl_reg, timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
-- 
1.8.0.2

[PATCH v2 7/7] arm: zynq: timer: Set clock_event cpumask

[Soren Brinkmann]

The timers are common to both A9 cores, so let's set the clock
event struct's cpumask accordingly, to all possible CPUs.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
---
 arch/arm/mach-zynq/timer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 7b2e047..f9fbc9c 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -267,6 +267,7 @@ static void __init zynq_ttc_setup_clockevent(struct device_node *np,
 	ttcce->ce.set_mode = xttcps_set_mode;
 	ttcce->ce.rating = 200;
 	ttcce->ce.irq = irq;
+	ttcce->ce.cpumask = cpu_possible_mask;
 
 	__raw_writel(0x23, ttcce->xttc.base_addr + XTTCPS_CNT_CNTRL_OFFSET);
 	__raw_writel(CLK_CNTRL_PRESCALE | CLK_CNTRL_PRESCALE_EN,
-- 
1.8.0.2

Re: [PATCH v2 0/7] Updates for Zynq's timer driver

[Josh Cartwright]

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On Wed, Dec 19, 2012 at 10:16:25AM -0800, Soren Brinkmann wrote:
> I started to put some effort on syncing the Xilinx Linux tree with mainline and
> the timer driver is my first victim.
> Most commits are fixing style issues or clean up. Functionality is touched only
> in patches #2 and #7.
> 
> Some patches are present in almost identically in the Xilinx Linux tree and I
> took over 'Acked-by' lines from those commits.
> 
> To repost the patch with the arm-kernel list included I made this a v2 to avoid
> confusion about which series is the current one, though the patches are the same
> as the ones posted before on lkml only.
> I added Josh's 'Reviewed-by' line though.

I had a chance this morning to get this set up and running on one of our
Zynq boards this morning in between testing Stephen's clk-zynq changes.
Looks good.

Whoever is going to pick this up (probably Michal), feel free to add my:

Tested-by: Josh Cartwright <josh.cartwright@ni.com>

Thanks,

  Josh

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