From: Rajat Srivastava rajat.srivastava@nxp.com
Adds helper functions to enable snooping and outstanding burst beat settings.
Signed-off-by: Rajat Srivastava rajat.srivastava@nxp.com Signed-off-by: Rajesh Bhagat rajesh.bhagat@nxp.com --- drivers/usb/dwc3/core.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc3/core.h | 7 +++++++ 2 files changed, 52 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 85cc96a..4ac599a 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -599,6 +599,51 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
#define DWC3_ALIGN_MASK (16 - 1)
+void dwc3_core_incr_burst_enable(int index, int btype_incr_val, + int breq_limit) +{ + struct dwc3 *dwc; + u32 reg; + + list_for_each_entry(dwc, &dwc3_list, list) { + if (dwc->index != index) + continue; + + /* + * Change burst beat and outstanding pipelined + * transfers requests + */ + reg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0); + reg = (reg & ~DWC3_INCR_BTYPE_MASK) | btype_incr_val; + dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, reg); + + reg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG1); + reg = (reg & ~DWC3_BREQ_LIMIT_MASK) | (breq_limit << 8); + dwc3_writel(dwc->regs, DWC3_GSBUSCFG1, reg); + break; + } +} + +void dwc3_core_set_snooping(int index, bool snoop) +{ + struct dwc3 *dwc; + u32 reg; + + list_for_each_entry(dwc, &dwc3_list, list) { + if (dwc->index != index) + continue; + + /* Enable/Disable snooping */ + reg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0); + if (snoop) + reg |= DWC3_SNOOP_ENABLE; + else + reg &= ~DWC3_SNOOP_ENABLE; + dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, reg); + break; + } +} + /** * dwc3_uboot_init - dwc3 core uboot initialization code * @dwc3_dev: struct dwc3_device containing initialization data diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 72d2fcd..455e7fa 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -593,6 +593,13 @@ struct dwc3_hwparams { /* HWPARAMS7 */ #define DWC3_RAM1_DEPTH(n) ((n) & 0xffff)
+/* GSBUSCFG0 */ +#define DWC3_SNOOP_ENABLE (0x22220000) +#define DWC3_INCR_BTYPE_MASK (0xff) + +/* GSBUSCFG1 */ +#define DWC3_BREQ_LIMIT_MASK (0xf00) + struct dwc3_request { struct usb_request request; struct list_head list;