[v4,6/9] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device
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Message ID 1480436092-10728-7-git-send-email-al.kochet@gmail.com
State New
Headers show

Commit Message

Alexander Kochetkov Nov. 29, 2016, 4:14 p.m. UTC
The patch move ce field out of struct bc_timer into struct
rk_clock_event_device and rename struct bc_timer to struct rk_timer.

This is refactoring step without functional changes.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
---
 drivers/clocksource/rockchip_timer.c |   33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

Comments

Daniel Lezcano Jan. 23, 2017, 4:26 p.m. UTC | #1
On Tue, Nov 29, 2016 at 07:14:49PM +0300, Alexander Kochetkov wrote:
> The patch move ce field out of struct bc_timer into struct
> rk_clock_event_device and rename struct bc_timer to struct rk_timer.

Why ?
Alexander Kochetkov Jan. 23, 2017, 4:45 p.m. UTC | #2
Daniel, thanks for reviewing patches!

> 23 янв. 2017 г., в 19:26, Daniel Lezcano <daniel.lezcano@linaro.org> написал(а):
> 
> On Tue, Nov 29, 2016 at 07:14:49PM +0300, Alexander Kochetkov wrote:
>> The patch move ce field out of struct bc_timer into struct
>> rk_clock_event_device and rename struct bc_timer to struct rk_timer.
> 
> Why ?

Single rockchip timer can be either broadcast timer/clockevent (current implementation) or
clocksource (the one I’ve implemented in series). Both implementations based on
low level timer routines (rk_timer_disable, rk_timer_enable, rk_timer_update_counter, 
rk_timer_counter_read and so on). Both implementations use timers in different modes
(interrupts vs free running). In order to distinguish this concepts I tried to split
low level timer routines from bc_timer.

Otherwise I can place all needed clocksource filelds into 'struct bc_timer’ and rename 'struct bc_timer’
into 'struct rk_timer’. If this is more clear solution I can rewrite patches.

Alexander.

Patch
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diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index 23e267a..6d68d4c 100644
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -29,18 +29,28 @@ 
 #define TIMER_MODE_USER_DEFINED_COUNT		(1 << 1)
 #define TIMER_INT_UNMASK			(1 << 2)
 
-struct bc_timer {
-	struct clock_event_device ce;
+struct rk_timer {
 	void __iomem *base;
 	void __iomem *ctrl;
 	u32 freq;
 };
 
-static struct bc_timer bc_timer;
+struct rk_clock_event_device {
+	struct clock_event_device ce;
+	struct rk_timer timer;
+};
+
+static struct rk_clock_event_device bc_timer;
+
+static inline struct rk_clock_event_device*
+rk_clock_event_device(struct clock_event_device *ce)
+{
+	return container_of(ce, struct rk_clock_event_device, ce);
+}
 
-static inline struct bc_timer *rk_timer(struct clock_event_device *ce)
+static inline struct rk_timer *rk_timer(struct clock_event_device *ce)
 {
-	return container_of(ce, struct bc_timer, ce);
+	return &rk_clock_event_device(ce)->timer;
 }
 
 static inline void __iomem *rk_base(struct clock_event_device *ce)
@@ -116,16 +126,17 @@  static irqreturn_t rk_timer_interrupt(int irq, void *dev_id)
 static int __init rk_timer_init(struct device_node *np, u32 ctrl_reg)
 {
 	struct clock_event_device *ce = &bc_timer.ce;
+	struct rk_timer *timer = &bc_timer.timer;
 	struct clk *timer_clk;
 	struct clk *pclk;
 	int ret = -EINVAL, irq;
 
-	bc_timer.base = of_iomap(np, 0);
-	if (!bc_timer.base) {
+	timer->base = of_iomap(np, 0);
+	if (!timer->base) {
 		pr_err("Failed to get base address for '%s'\n", TIMER_NAME);
 		return -ENXIO;
 	}
-	bc_timer.ctrl = bc_timer.base + ctrl_reg;
+	timer->ctrl = timer->base + ctrl_reg;
 
 	pclk = of_clk_get_by_name(np, "pclk");
 	if (IS_ERR(pclk)) {
@@ -153,7 +164,7 @@  static int __init rk_timer_init(struct device_node *np, u32 ctrl_reg)
 		goto out_timer_clk;
 	}
 
-	bc_timer.freq = clk_get_rate(timer_clk);
+	timer->freq = clk_get_rate(timer_clk);
 
 	irq = irq_of_parse_and_map(np, 0);
 	if (!irq) {
@@ -181,7 +192,7 @@  static int __init rk_timer_init(struct device_node *np, u32 ctrl_reg)
 		goto out_irq;
 	}
 
-	clockevents_config_and_register(ce, bc_timer.freq, 1, UINT_MAX);
+	clockevents_config_and_register(ce, timer->freq, 1, UINT_MAX);
 
 	return 0;
 
@@ -190,7 +201,7 @@  out_irq:
 out_timer_clk:
 	clk_disable_unprepare(pclk);
 out_unmap:
-	iounmap(bc_timer.base);
+	iounmap(timer->base);
 
 	return ret;
 }