Add a module_name string to the pwm_lookup struct and if specified and pwmchip_find_by_name() does not find the pwmchip try calling request_module with the specified name.
Signed-off-by: Hans de Goede <[email protected]> --- drivers/pwm/core.c | 4 ++++ include/linux/pwm.h | 11 +++++++++-- 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 0d3ef29..c418a7a 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -823,6 +823,10 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) return ERR_PTR(-ENODEV); chip = pwmchip_find_by_name(chosen->provider); + if (!chip && chosen->module_name) { + request_module(chosen->module_name); + chip = pwmchip_find_by_name(chosen->provider); + } if (!chip) return ERR_PTR(-EPROBE_DEFER); diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 2c6c511..40ab8b6 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -613,18 +613,25 @@ struct pwm_lookup { const char *con_id; unsigned int period; enum pwm_polarity polarity; + const char *module_name; /* Optional may be NULL */ }; -#define PWM_LOOKUP(_provider, _index, _dev_id, _con_id, _period, _polarity) \ +#define PWM_LOOKUP_MODNAME(_provider, _index, _dev_id, _con_id, _period, \ + _polarity, _module_name) \ { \ .provider = _provider, \ .index = _index, \ .dev_id = _dev_id, \ .con_id = _con_id, \ .period = _period, \ - .polarity = _polarity \ + .polarity = _polarity, \ + .module_name = _module_name \ } +#define PWM_LOOKUP(_provider, _index, _dev_id, _con_id, _period, _polarity) \ + PWM_LOOKUP_MODNAME(_provider, _index, _dev_id, _con_id, _period, \ + _polarity, NULL) + #if IS_ENABLED(CONFIG_PWM) void pwm_add_table(struct pwm_lookup *table, size_t num); void pwm_remove_table(struct pwm_lookup *table, size_t num); -- 2.9.3 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
