diff options
| author | Felipe Balbi <balbi@ti.com> | 2011-10-07 22:55:04 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-12-12 11:48:10 +0200 |
| commit | 6c167fc9b0c23ead791edb94cf4debb6b8e534b5 (patch) | |
| tree | 1ee2f57ad99cc6a62085c0a433fbc56c17bbf284 | |
| parent | b2c2271c826589c5c5b285a5a32e158d36d263d9 (diff) | |
| download | blackbird-op-linux-6c167fc9b0c23ead791edb94cf4debb6b8e534b5.tar.gz blackbird-op-linux-6c167fc9b0c23ead791edb94cf4debb6b8e534b5.zip | |
usb: dwc3: allow forcing a maximum speed
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@ti.com>
| -rw-r--r-- | drivers/usb/dwc3/core.c | 15 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 | ||||
| -rw-r--r-- | 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 717ebc9ff941..ca3b01f5fffa 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -59,6 +59,10 @@ #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 @@ -370,6 +374,17 @@ 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 29a8e1679e12..b7d56c3a1fbb 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 46ed15bca19f..807737aec00e 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; |
