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From 28b5c129ca6e585ec95c160ec4297bc6c6360b6f Mon Sep 17 00:00:00 2001
From: Minas Harutyunyan <minas.harutyunyan@synopsys.com>
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 <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---
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
@@ -272,6 +272,23 @@ 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.
@@ -290,6 +307,7 @@ 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;
@@ -302,11 +320,6 @@ 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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