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Date: Fri, 06 Mar 2015 11:08:53 +0100
From: Robert Baldyga <r.baldyga@...sung.com>
To: balbi@...com
Cc: gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org, m.szyprowski@...sung.com,
Robert Baldyga <r.baldyga@...sung.com>
Subject: [PATCH] dwc3: make LPM configurable in DT
LPM capability is hardware property, so now it's moved to DT.
Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
---
Documentation/devicetree/bindings/usb/dwc3.txt | 1 +
drivers/usb/dwc3/Kconfig | 7 -------
drivers/usb/dwc3/core.c | 3 +++
drivers/usb/dwc3/core.h | 1 +
drivers/usb/dwc3/host.c | 5 ++---
drivers/usb/dwc3/platform_data.h | 1 +
6 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index cd7f045..36b9148 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -14,6 +14,7 @@ Optional properties:
- phys: from the *Generic PHY* bindings
- phy-names: from the *Generic PHY* bindings
- tx-fifo-resize: determines if the FIFO *has* to be reallocated.
+ - usb3_lpm_capable: determines if platform is USB3 LPM capable
- snps,disable_scramble_quirk: true when SW should disable data scrambling.
Only really useful for FPGA builds.
- snps,has-lpm-erratum: true when DWC3 was configured with LPM Erratum enabled
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index edbf9c8..827c4f8 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -104,11 +104,4 @@ config USB_DWC3_DEBUG
help
Say Y here to enable debugging messages on DWC3 Driver.
-config DWC3_HOST_USB3_LPM_ENABLE
- bool "Enable USB3 LPM Capability"
- depends on USB_DWC3_HOST=y || USB_DWC3_DUAL_ROLE=y
- default n
- help
- Select this when you want to enable USB3 LPM with dwc3 xhci host.
-
endif
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 9f0e209..a8d4d6d 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -811,6 +811,8 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->needs_fifo_resize = of_property_read_bool(node,
"tx-fifo-resize");
+ dwc->usb3_lpm_capable = of_property_read_bool(node,
+ "usb3_lpm_capable");
dwc->dr_mode = of_usb_get_dr_mode(node);
dwc->disable_scramble_quirk = of_property_read_bool(node,
@@ -848,6 +850,7 @@ static int dwc3_probe(struct platform_device *pdev)
hird_threshold = pdata->hird_threshold;
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
+ dwc->usb3_lpm_capable = pdata->usb3_lpm_capable;
dwc->dr_mode = pdata->dr_mode;
dwc->disable_scramble_quirk = pdata->disable_scramble_quirk;
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index d201910..622f65f 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -812,6 +812,7 @@ struct dwc3 {
unsigned setup_packet_pending:1;
unsigned start_config_issued:1;
unsigned three_stage_setup:1;
+ unsigned usb3_lpm_capable:1;
unsigned disable_scramble_quirk:1;
unsigned u2exit_lfps_quirk:1;
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index 12bfd3c..507eddf 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -49,9 +49,8 @@ int dwc3_host_init(struct dwc3 *dwc)
memset(&pdata, 0, sizeof(pdata));
-#ifdef CONFIG_DWC3_HOST_USB3_LPM_ENABLE
- pdata.usb3_lpm_capable = 1;
-#endif
+ if (dwc->usb3_lpm_capable)
+ pdata.usb3_lpm_capable = 1;
ret = platform_device_add_data(xhci, &pdata, sizeof(pdata));
if (ret) {
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index a3a3b6d5..a2bd464 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -24,6 +24,7 @@ struct dwc3_platform_data {
enum usb_device_speed maximum_speed;
enum usb_dr_mode dr_mode;
bool tx_fifo_resize;
+ bool usb3_lpm_capable;
unsigned is_utmi_l1_suspend:1;
u8 hird_threshold;
--
1.9.1
--
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