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- From 28b5c129ca6e585ec95c160ec4297bc6c6360b6f Mon Sep 17 00:00:00 2001
- From: Minas Harutyunyan <[email protected]>
- 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 <[email protected]>
- Signed-off-by: Felipe Balbi <[email protected]>
- ---
- drivers/usb/dwc2/params.c | 23 ++++++++++++++++++-----
- 1 file changed, 18 insertions(+), 5 deletions(-)
- --- a/drivers/usb/dwc2/params.c
- +++ b/drivers/usb/dwc2/params.c
- @@ -273,6 +273,23 @@ static void dwc2_set_param_power_down(st
- 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.
- @@ -291,6 +308,7 @@ static void dwc2_set_default_params(stru
- 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;
-
- @@ -303,11 +321,6 @@ static void dwc2_set_default_params(stru
- 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->max_packet_count = hw->max_packet_count;
- p->max_transfer_size = hw->max_transfer_size;
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