diff options
| author | Rajat Srivastava <rajat.srivastava@nxp.com> | 2016-08-04 09:26:54 (GMT) |
|---|---|---|
| committer | Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> | 2017-07-19 05:46:35 (GMT) |
| commit | a836ef446fe14fc61526e7300994f978e21cec43 (patch) | |
| tree | f9572b1968a4c7e283e528935576e9aabc8e0668 /drivers | |
| parent | 036773a9647e87071a19e5270eb9c4671dedce13 (diff) | |
| download | u-boot-a836ef446fe14fc61526e7300994f978e21cec43.tar.xz | |
usb: dwc3: Add helper functions to enable snooping and burst settings
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 45 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 7 |
2 files changed, 52 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 87b9c87..0b56a81 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -601,6 +601,51 @@ 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; |