From 28b5c129ca6e585ec95c160ec4297bc6c6360b6f Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Mon, 4 Mar 2019 17:08:07 +0400 Subject: usb: dwc2: Set lpm mode parameters depend on HW configuration If core not supported lpm, i.e. BCM2835 then confusing warnings seen in log. To avoid these warnings, added function dwc2_set_param_lpm() to set lpm and other lpm related parameters based on lpm support by core. Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 442113246cba..6900eea57526 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -285,6 +285,23 @@ static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg) hsotg->params.power_down = val; } +static void dwc2_set_param_lpm(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + + p->lpm = hsotg->hw_params.lpm_mode; + if (p->lpm) { + p->lpm_clock_gating = true; + p->besl = true; + p->hird_threshold_en = true; + p->hird_threshold = 4; + } else { + p->lpm_clock_gating = false; + p->besl = false; + p->hird_threshold_en = false; + } +} + /** * dwc2_set_default_params() - Set all core parameters to their * auto-detected default values. @@ -303,6 +320,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) dwc2_set_param_speed(hsotg); dwc2_set_param_phy_utmi_width(hsotg); dwc2_set_param_power_down(hsotg); + dwc2_set_param_lpm(hsotg); p->phy_ulpi_ddr = false; p->phy_ulpi_ext_vbus = false; @@ -315,11 +333,6 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a); p->uframe_sched = true; p->external_id_pin_ctl = false; - p->lpm = true; - p->lpm_clock_gating = true; - p->besl = true; - p->hird_threshold_en = true; - p->hird_threshold = 4; p->ipg_isoc_en = false; p->service_interval = false; p->max_packet_count = hw->max_packet_count; -- cgit v1.2.3