pwm: omap-dmtimer: Round load and match values rather than truncate

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When converting period and duty_cycle from nanoseconds to fclk cycles,
the error introduced by the integer division can be appreciable, especially
in the case of slow fclk or short period. Use DIV_ROUND_CLOSEST_ULL() so
that the error is kept to +/- 0.5 clock cycles.

Fixes: 6604c6556d ("pwm: Add PWM driver for OMAP using dual-mode timers")
Signed-off-by: David Rivshin <drivshin@allworx.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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David Rivshin 2016-01-29 23:26:53 -05:00 • committed by Thierry Reding

parent cd37888142

commit 7b0883f338

1 changed files with 1 additions and 5 deletions

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drivers/pwm/pwm-omap-dmtimer.c

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