[PATCH v7 0/5] Fix bugs in kona pwm driver and pwm core

Jonathan Richardson
2015-05-12T23:28:11Z

This patchset fixes a number of bugs in the Broadcom Kona pwm driver. It also
fixes a bug in the pwm core where the enabled state was incorrect on failed
calls to enable. Also, a new function was added to the pwm core to add pwm chips
with inversed polarity for chips that have a different default polarity than the
core. The prevents incorrect polarity being reported.

Debug info has been added to help debug configuring duty cycle and period.

These changes are required for the Kona pwm driver to work on Cygnus and the
same PWM IP is being used.

Changes from v6:
- Move new debugging info for duty cycle and period in config function into
its own commit.
- Add kona_pwmc_prepare_for_settings() function to remove duplicated code.

Changes from v5:
- Address Dmitry's comment on code cleanup of pwm_enable() in pwm core.
- Including all patches from different contributors in this patchset. Some
were left out in v4.

Changes from v4:
- Rebased to Tim Kryger's patch that adds support in pwm core to add driver
with inversed polarity.
- Removed patch 2 that resolved difference between hardware default polarity
and pwm framework default polarity. The default polarity is set properly now
when the pwm driver is registered with the pwm framework.

Arun Ramamurthy (1):
drivers: pwm: bcm-kona: Dont set polarity in probe

Jonathan Richardson (3):
pwm: kona: Fix incorrect config, disable, and polarity procedures
pwm: kona: Add debug info to config function
pwm: core: Set enable state properly on failed call to enable

Tim Kryger (1):
drivers: pwm: core: Add pwmchip_add_inversed

drivers/pwm/core.c | 52 ++++++++++++++++++++++------
drivers/pwm/pwm-bcm-kona.c | 81 +++++++++++++++++++++++++++++++++-----------
include/linux/pwm.h | 6 ++++
3 files changed, 109 insertions(+), 30 deletions(-)

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1.7.9.5