renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-20 03:04:01 +08:00
Code

clocksource/drivers/rockchip: Add support for the rk3399 SoC

Browse Source 
The only difference between the rk3399 SoC and the other ones is the control
register offset which is different.

Add a new field to store the control register address depending on the SoC
and use it instead of the <base> + <control offset>.

Signed-off-by: Huang Tao <huangtao@rock-chips.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Heiko Stuebner <heiko@sntech.de>
Tested-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Huang, Tao 2016-06-16 16:00:08 +02:00 committed by Daniel Lezcano
parent 716897d90f
commit be6af450bb
1 changed files with 26 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/clocksource/rockchip_timer.c
View File

@ -19,7 +19,8 @@
#define TIMER_LOAD_COUNT0 0x00
#define TIMER_LOAD_COUNT1 0x04
#define TIMER_CONTROL_REG 0x10
#define TIMER_CONTROL_REG3288 0x10
#define TIMER_CONTROL_REG3399 0x1c
#define TIMER_INT_STATUS 0x18
#define TIMER_DISABLE 0x0
@ -31,6 +32,7 @@
struct bc_timer {
struct clock_event_device ce;
void __iomem *base;
void __iomem *ctrl;
u32 freq;
};
@ -46,15 +48,20 @@ static inline void __iomem *rk_base(struct clock_event_device *ce)
return rk_timer(ce)->base;
}
static inline void __iomem *rk_ctrl(struct clock_event_device *ce)
{
return rk_timer(ce)->ctrl;
}
static inline void rk_timer_disable(struct clock_event_device *ce)
{
writel_relaxed(TIMER_DISABLE, rk_base(ce) + TIMER_CONTROL_REG);
writel_relaxed(TIMER_DISABLE, rk_ctrl(ce));
}
static inline void rk_timer_enable(struct clock_event_device *ce, u32 flags)
{
writel_relaxed(TIMER_ENABLE | TIMER_INT_UNMASK | flags,
rk_base(ce) + TIMER_CONTROL_REG);
rk_ctrl(ce));
}
static void rk_timer_update_counter(unsigned long cycles,
@ -106,7 +113,7 @@ static irqreturn_t rk_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static void __init rk_timer_init(struct device_node *np)
static void __init rk_timer_init(struct device_node *np, u32 ctrl_reg)
{
struct clock_event_device *ce = &bc_timer.ce;
struct clk *timer_clk;
@ -118,6 +125,7 @@ static void __init rk_timer_init(struct device_node *np)
pr_err("Failed to get base address for '%s'\n", TIMER_NAME);
return;
}
bc_timer.ctrl = bc_timer.base + ctrl_reg;
pclk = of_clk_get_by_name(np, "pclk");
if (IS_ERR(pclk)) {
@ -180,4 +188,17 @@ out_unmap:
iounmap(bc_timer.base);
}
CLOCKSOURCE_OF_DECLARE(rk_timer, "rockchip,rk3288-timer", rk_timer_init);
static void __init rk3288_timer_init(struct device_node *np)
{
rk_timer_init(np, TIMER_CONTROL_REG3288);
}
static void __init rk3399_timer_init(struct device_node *np)
{
rk_timer_init(np, TIMER_CONTROL_REG3399);
}
CLOCKSOURCE_OF_DECLARE(rk3288_timer, "rockchip,rk3288-timer",
rk3288_timer_init);
CLOCKSOURCE_OF_DECLARE(rk3399_timer, "rockchip,rk3399-timer",
rk3399_timer_init);