diff options
| author | Kever Yang <kever.yang@rock-chips.com> | 2016-08-12 17:57:48 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-09-22 07:32:22 -0600 |
| commit | 12406ae247736bb6dfd4a92431caec33ab2a54d7 (patch) | |
| tree | b46bcf38bcb7e50daf28d1756b122007f58429d4 /drivers/pwm/rk_pwm.c | |
| parent | ce26e8a1ddd55fc09e527f8381d54c35a02364c2 (diff) | |
rk_pwm: use clock framework API to get module clock
This patch use clock API instead of hardcode for get pwm clock.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
Fix printf() to debug() nit:
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/pwm/rk_pwm.c')
| -rw-r--r-- | drivers/pwm/rk_pwm.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/pwm/rk_pwm.c b/drivers/pwm/rk_pwm.c index 2d289a4c07..d60d55d71f 100644 --- a/drivers/pwm/rk_pwm.c +++ b/drivers/pwm/rk_pwm.c @@ -6,6 +6,7 @@ */ #include <common.h> +#include <clk.h> #include <div64.h> #include <dm.h> #include <pwm.h> @@ -13,9 +14,9 @@ #include <syscon.h> #include <asm/io.h> #include <asm/arch/clock.h> -#include <asm/arch/cru_rk3288.h> #include <asm/arch/grf_rk3288.h> #include <asm/arch/pwm.h> +#include <asm/arch/hardware.h> #include <power/regulator.h> DECLARE_GLOBAL_DATA_PTR; @@ -23,6 +24,7 @@ DECLARE_GLOBAL_DATA_PTR; struct rk_pwm_priv { struct rk3288_pwm *regs; struct rk3288_grf *grf; + ulong freq; }; static int rk_pwm_set_config(struct udevice *dev, uint channel, uint period_ns, @@ -38,8 +40,8 @@ static int rk_pwm_set_config(struct udevice *dev, uint channel, uint period_ns, RK_PWM_DISABLE, ®s->ctrl); - period = lldiv((uint64_t)(PD_BUS_PCLK_HZ / 1000) * period_ns, 1000000); - duty = lldiv((uint64_t)(PD_BUS_PCLK_HZ / 1000) * duty_ns, 1000000); + period = lldiv((uint64_t)(priv->freq / 1000) * period_ns, 1000000); + duty = lldiv((uint64_t)(priv->freq / 1000) * duty_ns, 1000000); writel(period, ®s->period_hpr); writel(duty, ®s->duty_lpr); @@ -76,9 +78,18 @@ static int rk_pwm_ofdata_to_platdata(struct udevice *dev) static int rk_pwm_probe(struct udevice *dev) { struct rk_pwm_priv *priv = dev_get_priv(dev); + struct clk clk; + int ret = 0; rk_setreg(&priv->grf->soc_con2, 1 << 0); + ret = clk_get_by_index(dev, 0, &clk); + if (ret < 0) { + debug("%s get clock fail!\n", __func__); + return -EINVAL; + } + priv->freq = clk_get_rate(&clk); + return 0; } |