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usb: dwc3: Add software-managed properties for flattened model 

Add software-managed properties for the flattened model, which does not
need to use device tree properties to pass down information to the
common DWC3 core.

Add 'properties' in dwc3_probe_data and set default values for existing
users (dwc3-qcom, dwc3-generic-plat).

No functional changes.

Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250929-ls_dma_coherence-v5-2-2ebee578eb7e@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/1354/merge
Frank Li 2025-09-29 10:24:15 -04:00 committed by Greg Kroah-Hartman
parent b9f1c762a4
commit 7298c06d58
4 changed files with 26 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/dwc3/core.c
View File

@ -1666,7 +1666,8 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE, true);
}
static void dwc3_get_software_properties(struct dwc3 *dwc)
static void dwc3_get_software_properties(struct dwc3 *dwc,
const struct dwc3_properties *properties)
{
struct device *tmpdev;
u16 gsbuscfg0_reqinfo;
@ -1674,6 +1675,12 @@ static void dwc3_get_software_properties(struct dwc3 *dwc)
dwc->gsbuscfg0_reqinfo = DWC3_GSBUSCFG0_REQINFO_UNSPECIFIED;
if (properties->gsbuscfg0_reqinfo !=
DWC3_GSBUSCFG0_REQINFO_UNSPECIFIED) {
dwc->gsbuscfg0_reqinfo = properties->gsbuscfg0_reqinfo;
return;
}
/*
* Iterate over all parent nodes for finding swnode properties
* and non-DT (non-ABI) properties.
@ -2206,7 +2213,7 @@ int dwc3_core_probe(const struct dwc3_probe_data *data)
dwc3_get_properties(dwc);
dwc3_get_software_properties(dwc);
dwc3_get_software_properties(dwc, &data->properties);
dwc->usb_psy = dwc3_get_usb_power_supply(dwc);
if (IS_ERR(dwc->usb_psy))
@ -2356,6 +2363,7 @@ static int dwc3_probe(struct platform_device *pdev)
probe_data.dwc = dwc;
probe_data.res = res;
probe_data.properties = DWC3_DEFAULT_PROPERTIES;
return dwc3_core_probe(&probe_data);
}

1
drivers/usb/dwc3/dwc3-generic-plat.c
View File

@ -75,6 +75,7 @@ static int dwc3_generic_probe(struct platform_device *pdev)
probe_data.dwc = &dwc3g->dwc;
probe_data.res = res;
probe_data.ignore_clocks_and_resets = true;
probe_data.properties = DWC3_DEFAULT_PROPERTIES;
ret = dwc3_core_probe(&probe_data);
if (ret)
return dev_err_probe(dev, ret, "failed to register DWC3 Core\n");

1
drivers/usb/dwc3/dwc3-qcom.c
View File

@ -704,6 +704,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
probe_data.dwc = &qcom->dwc;
probe_data.res = &res;
probe_data.ignore_clocks_and_resets = true;
probe_data.properties = DWC3_DEFAULT_PROPERTIES;
ret = dwc3_core_probe(&probe_data);
if (ret) {
ret = dev_err_probe(dev, ret, "failed to register DWC3 Core\n");

14
drivers/usb/dwc3/glue.h
View File

@ -9,17 +9,31 @@
#include <linux/types.h>
#include "core.h"
/**
* dwc3_properties: DWC3 core properties
* @gsbuscfg0_reqinfo: Value to be programmed in the GSBUSCFG0.REQINFO field
*/
struct dwc3_properties {
u32 gsbuscfg0_reqinfo;
};
#define DWC3_DEFAULT_PROPERTIES ((struct dwc3_properties){ \
.gsbuscfg0_reqinfo = DWC3_GSBUSCFG0_REQINFO_UNSPECIFIED, \
})
/**
* dwc3_probe_data: Initialization parameters passed to dwc3_core_probe()
* @dwc: Reference to dwc3 context structure
* @res: resource for the DWC3 core mmio region
* @ignore_clocks_and_resets: clocks and resets defined for the device should
* be ignored by the DWC3 core, as they are managed by the glue
* @properties: dwc3 software manage properties
*/
struct dwc3_probe_data {
struct dwc3 *dwc;
struct resource *res;
bool ignore_clocks_and_resets;
struct dwc3_properties properties;
};
int dwc3_core_probe(const struct dwc3_probe_data *data);