diff options
| author | David Wu <david.wu@rock-chips.com> | 2019-12-03 17:49:53 +0800 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2019-12-06 00:06:23 +0800 |
| commit | 4ee6d51c5ada760f82eb3d771bc2909130984e98 (patch) | |
| tree | 401a856ee6fd9b763a33c40b1067ca82c8b76488 /arch/arm | |
| parent | aebd9eddb3486eceaad98f186986895025794354 (diff) | |
pwm: rk_pwm: Make PWM driver to support all Rockchip Socs
This PWM driver can be used to support pwm functions
for on all Rockchip Socs.
The previous chips than RK3288 did not support polarity,
and register layout was different from the RK3288 PWM.
The RK3288 keep the current functions.
RK3328 and the chips after it, which can support hardware lock,
configure duty, period and polarity at next same period, to
prevent the intermediate temporary state.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/arch-rockchip/pwm.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/arm/include/asm/arch-rockchip/pwm.h b/arch/arm/include/asm/arch-rockchip/pwm.h index b5178db394..e8594055cd 100644 --- a/arch/arm/include/asm/arch-rockchip/pwm.h +++ b/arch/arm/include/asm/arch-rockchip/pwm.h @@ -7,13 +7,15 @@ #ifndef _ASM_ARCH_PWM_H #define _ASM_ARCH_PWM_H -struct rk3288_pwm { - u32 cnt; - u32 period_hpr; - u32 duty_lpr; - u32 ctrl; +struct rockchip_pwm_regs { + unsigned long duty; + unsigned long period; + unsigned long cntr; + unsigned long ctrl; }; -check_member(rk3288_pwm, ctrl, 0xc); + +#define PWM_CTRL_TIMER_EN (1 << 0) +#define PWM_CTRL_OUTPUT_EN (1 << 3) #define RK_PWM_DISABLE (0 << 0) #define RK_PWM_ENABLE (1 << 0) @@ -33,6 +35,9 @@ check_member(rk3288_pwm, ctrl, 0xc); #define PWM_OUTPUT_LEFT (0 << 5) #define PWM_OUTPUT_CENTER (1 << 5) +#define PWM_LOCK (1 << 6) +#define PWM_UNLOCK (0 << 6) + #define PWM_LP_ENABLE (1 << 8) #define PWM_LP_DISABLE (0 << 8) |