this is mainly for testing. In order to be able
to test if we're enumerating correctly on all
speeds, let that be controlled by a module
parameter.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/dwc3/core.c | 15 +++++++++++++++
drivers/usb/dwc3/core.h | 2 ++
drivers/usb/dwc3/gadget.c | 2 +-
3 files changed, 18 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index d35f905..ec57af4 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -58,6 +58,10 @@
#include "debug.h"
+static char *maximum_speed = "super";
+module_param(maximum_speed, charp, 0);
+MODULE_PARM_DESC(maximum_speed, "Maximum supported speed.");
+
/**
* dwc3_core_soft_reset - Issues core soft reset and PHY reset
* @dwc: pointer to our context structure
@@ -369,6 +373,17 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
dwc->dev = &pdev->dev;
dwc->irq = irq;
+ if (!strncmp("super", maximum_speed, 5))
+ dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
+ else if (!strncmp("high", maximum_speed, 4))
+ dwc->maximum_speed = DWC3_DCFG_HIGHSPEED;
+ else if (!strncmp("full", maximum_speed, 4))
+ dwc->maximum_speed = DWC3_DCFG_FULLSPEED1;
+ else if (!strncmp("low", maximum_speed, 3))
+ dwc->maximum_speed = DWC3_DCFG_LOWSPEED;
+ else
+ dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
+
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_forbid(&pdev->dev);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 29a8e16..b7d56c3 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -555,6 +555,7 @@ struct dwc3_hwparams {
* @regs: base address for our registers
* @regs_size: address space size
* @irq: IRQ number
+ * @maximum_speed: maximum speed requested (mainly for testing purposes)
* @revision: revision register contents
* @is_selfpowered: true when we are selfpowered
* @three_stage_setup: set if we perform a three phase setup
@@ -595,6 +596,7 @@ struct dwc3 {
int irq;
+ u32 maximum_speed;
u32 revision;
#define DWC3_REVISION_173A 0x5533173a
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 080a4a0..6ff3656 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1183,7 +1183,7 @@ static int dwc3_gadget_start(struct usb_gadget *g,
reg = dwc3_readl(dwc->regs, DWC3_DCFG);
reg &= ~(DWC3_DCFG_SPEED_MASK);
- reg |= DWC3_DCFG_SUPERSPEED;
+ reg |= dwc->maximum_speed;
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
dwc->start_config_issued = false;
--
1.7.6.396.ge0613
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