diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2021-03-27 17:54:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-28 14:07:18 +0200 |
| commit | d00be779cc5016a1f4cc414e25fc45a9df40ffaf (patch) | |
| tree | 38af462b7cd46f56e64be8a87df9a7543e04aa18 /drivers/usb/dwc3/core.h | |
| parent | 487adc545bcef07d38b2918a7216a993c06b7dc9 (diff) | |
usb: dwc3: Create helper function getting MDWIDTH
Different controller IPs check different HW parameters for MDWIDTH.
To help with maintainability, create a helper function to consolidate
the logic in a single place.
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/456329d36e8c188df5c234f3282595b630bf1470.1616892233.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 4ca4b4be85e4..265190b7074a 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -860,8 +860,6 @@ struct dwc3_hwparams { /* HWPARAMS0 */ #define DWC3_MODE(n) ((n) & 0x7) -#define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8) - /* HWPARAMS1 */ #define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15) @@ -1458,6 +1456,23 @@ u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type); (!(_ip##_VERSIONTYPE_##_to) || \ dwc->version_type <= _ip##_VERSIONTYPE_##_to)) +/** + * dwc3_mdwidth - get MDWIDTH value in bits + * @dwc: pointer to our context structure + * + * Return MDWIDTH configuration value in bits. + */ +static inline u32 dwc3_mdwidth(struct dwc3 *dwc) +{ + u32 mdwidth; + + mdwidth = DWC3_GHWPARAMS0_MDWIDTH(dwc->hwparams.hwparams0); + if (DWC3_IP_IS(DWC32)) + mdwidth += DWC3_GHWPARAMS6_MDWIDTH(dwc->hwparams.hwparams6); + + return mdwidth; +} + bool dwc3_has_imod(struct dwc3 *dwc); int dwc3_event_buffers_setup(struct dwc3 *dwc); |