kernel/linux.git/drivers/usb/dwc3/debugfs.c, branch v4.14.286

usb: dwc3: debugfs: Properly print/set link state for HS

2019-12-17T19:38:08+00:00

[ Upstream commit 0d36dede457873404becd7c9cb9d0f2bcfd0dcd9 ] Highspeed device and below has different state names than superspeed and higher. Add proper checks and printouts of link states for highspeed and below. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi Signed-off-by: Sasha Levin

usb: dwc3: debugfs: slightly improve output of trb_ring

2017-06-02T08:22:28+00:00

Instead of printing out enqueue and dequeue pointer value as a header to the output, let's mark the TRBs in question with 'E' and 'D'. The output looks slightly easier to read. Signed-off-by: Felipe Balbi

usb: dwc3: core: make dwc3_set_mode() work properly

2017-04-11T07:58:30+00:00

We can't have both Host and Peripheral roles active at the same time because of one detail on DWC3: it shares the same memory area for both Host and Peripheral registers. When swapping roles we must reinitialize the new role every time. Let's make sure this works for our debugfs interface. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: remove unnecessary | operator

2017-04-11T07:58:30+00:00

Each role is mutually exclusive, the | operator is unnecessary. Remove it. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi

usb: dwc3: expose dwc3_trb_type_string()

2017-04-11T07:58:26+00:00

That helper can be used from our tracepoint interface with very minor edits. Let's do so. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: return strings that match tracepoints

2017-04-11T07:58:26+00:00

In order to improve usability a tiny bit, we will return strings that match what our tracepoints return. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: make use of dwc3_gadget_link_string()

2017-04-11T07:58:26+00:00

Instead of redecoding link state into a string, use our helper. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: downcase OTG on 'mode' file

2017-04-11T07:58:25+00:00

When writing, we expect the "otg" string. When showing, we return "OTG". Let's downcase that word to avoid confusion. Signed-off-by: Felipe Balbi

usb: dwc3: refactor gadget endpoint count calculation

2017-04-11T07:58:18+00:00

- DWC_USB3_NUM indicates the number of Device mode single directional endpoints, including OUT and IN endpoint 0. - DWC_USB3_NUM_IN_EPS indicates the maximum number of Device mode IN endpoints active at any time, including control endpoint 0. It's possible to configure RTL such that DWC_USB3_NUM_EPS is equal to DWC_USB3_NUM_IN_EPS. dwc3-core calculates the number of OUT endpoints as DWC_USB3_NUM minus DWC_USB3_NUM_IN_EPS. If RTL has been configured with DWC_USB3_NUM_IN_EPS equal to DWC_USB3_NUM then dwc3-core will calculate the number of OUT endpoints as zero. For example a from dwc3_core_num_eps() shows: [ 1.565000] /usb0@f01d0000: found 8 IN and 0 OUT endpoints This patch refactors the endpoint calculation down to one variable dwc->num_eps taking care to maintain the current mapping of endpoints for fixed FPGA configurations as described in Table 4-7 of version 2.60a of the DWC USB3 databook. The endpoint mapping will then be EP-OUT, EP-IN etc, up to DWC_USB3_NUM. If DWC_USB3_NUM is odd then OUT will take the extra endpoint. Suggested-by: Felipe Balbi Signed-off-by: Bryan O'Donoghue Signed-off-by: Felipe Balbi

usb: dwc3: add DWC3_GUCTL1 reg for debug

2016-06-20T09:32:46+00:00

GUCTL1 reg has some useful functions which can be written by user. For rockchip platform, we set GUCTL1.DEV_FORCE_20_CLK_FOR_30_CLK (bit26, applicable for the core is programmed to operate in 2.0 device only) to 1 in bootrom, and after start the kernel, we want to check whether this bit can be reset to default 0 after the core reset. Dump GUCTL1 reg from debugfs is more convenient for us. Signed-off-by: William Wu Signed-off-by: Felipe Balbi