Messages in this thread Patch in this message | | | From | Guru Das Srinagesh <> | Subject | [PATCH v7 10/13] pwm: stm32-lp: Use %llu format specifier for period | Date | Mon, 9 Mar 2020 12:35:13 -0700 |
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Because period and duty cycle are defined in the PWM framework structs as ints with units of nanoseconds, the maximum time duration that can be set is limited to ~2.147 seconds. Redefining them as u64 values will enable larger time durations to be set.
As a first step, prepare this driver to handle the switch to u64 period and duty_cycle by updating the format specifier in this dev_dbg message. The actual switch to u64 period and duty_cycle follows as a separate patch.
Cc: Fabrice Gasnier <fabrice.gasnier@st.com> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org> --- drivers/pwm/pwm-stm32-lp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c index 67fca62..134c146 100644 --- a/drivers/pwm/pwm-stm32-lp.c +++ b/drivers/pwm/pwm-stm32-lp.c @@ -61,7 +61,7 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm, do_div(div, NSEC_PER_SEC); if (!div) { /* Clock is too slow to achieve requested period. */ - dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period); + dev_dbg(priv->chip.dev, "Can't reach %llu ns\n", state->period); return -EINVAL; } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
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