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* pwm: imx: Remove unreachable codeAxel Lin2015-05-261-4/+0
| | | | | | | | The break after return is unreachable code, remove it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
* pwm: imx: Prevent NULL pointer dereferenceAxel Lin2015-05-261-0/+12
| | | | | | | | | pwm_id_to_reg() can return NULL, so add NULL testing to prevent NULL pointer dereference. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
* bugfix i.mx6 pwm: prevent overflow of period_c * duty_nsBrecht Neyrinck2015-05-151-1/+1
| | | | | | | Prevent overflow by casting duty_ns to ull first. This bug came up when trying to create a 200 Hz PWM Signed-off-by: Brecht Neyrinck <bnrn@psicontrol.com> Acked-by: Heiko Schocher<hs@denx.de>
* pwm, imx6: add support for pwm modul on imx6Heiko Schocher2014-07-234-0/+161
add basic support for the pwm modul found on imx6. Pieces of this code are based on linux code from drivers/pwm/pwm-imx.c Commit "cd3de83f1476 Linux 3.16-rc4" Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
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