diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 17 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc3/platform_data.h | 3 |
4 files changed, 27 insertions, 5 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3ea55f214439..8ae42b8db02b 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -730,6 +730,7 @@ static int dwc3_probe(struct platform_device *pdev) struct dwc3 *dwc; u8 lpm_nyet_threshold; u8 tx_de_emphasis; + u8 hird_threshold; int ret; @@ -791,12 +792,22 @@ static int dwc3_probe(struct platform_device *pdev) /* default to -3.5dB de-emphasis */ tx_de_emphasis = 1; + /* + * default to assert utmi_sleep_n and use maximum allowed HIRD + * threshold value of 0b1100 + */ + hird_threshold = 12; + if (node) { dwc->maximum_speed = of_usb_get_maximum_speed(node); dwc->has_lpm_erratum = of_property_read_bool(node, "snps,has-lpm-erratum"); of_property_read_u8(node, "snps,lpm-nyet-threshold", &lpm_nyet_threshold); + dwc->is_utmi_l1_suspend = of_property_read_bool(node, + "snps,is-utmi-l1-suspend"); + of_property_read_u8(node, "snps,hird-threshold", + &hird_threshold); dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); @@ -832,6 +843,9 @@ static int dwc3_probe(struct platform_device *pdev) dwc->has_lpm_erratum = pdata->has_lpm_erratum; if (pdata->lpm_nyet_threshold) lpm_nyet_threshold = pdata->lpm_nyet_threshold; + dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend; + if (pdata->hird_threshold) + hird_threshold = pdata->hird_threshold; dwc->needs_fifo_resize = pdata->tx_fifo_resize; dwc->dr_mode = pdata->dr_mode; @@ -859,6 +873,9 @@ static int dwc3_probe(struct platform_device *pdev) dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; + dwc->hird_threshold = hird_threshold + | (dwc->is_utmi_l1_suspend << 4); + ret = dwc3_core_get_phy(dwc); if (ret) return ret; diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index cf86d3022b52..4bb9aa696ede 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -675,12 +675,16 @@ struct dwc3_scratchpad_array { * @test_mode: true when we're entering a USB test mode * @test_mode_nr: test feature selector * @lpm_nyet_threshold: LPM NYET response threshold + * @hird_threshold: HIRD threshold * @delayed_status: true when gadget driver asks for delayed status * @ep0_bounced: true when we used bounce buffer * @ep0_expect_in: true when we expect a DATA IN transfer * @has_hibernation: true when dwc3 was configured with Hibernation * @has_lpm_erratum: true when core was configured with LPM Erratum. Note that * there's now way for software to detect this in runtime. + * @is_utmi_l1_suspend: the core asserts output signal + * 0 - utmi_sleep_n + * 1 - utmi_l1_suspend_n * @is_selfpowered: true when we are selfpowered * @is_fpga: true when we are using the FPGA board * @needs_fifo_resize: not all users might want fifo resizing, flag it @@ -797,12 +801,14 @@ struct dwc3 { u8 test_mode; u8 test_mode_nr; u8 lpm_nyet_threshold; + u8 hird_threshold; unsigned delayed_status:1; unsigned ep0_bounced:1; unsigned ep0_expect_in:1; unsigned has_hibernation:1; unsigned has_lpm_erratum:1; + unsigned is_utmi_l1_suspend:1; unsigned is_selfpowered:1; unsigned is_fpga:1; unsigned needs_fifo_resize:1; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 88a065f61150..398c12f5efe3 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2295,11 +2295,7 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN); - /* - * TODO: This should be configurable. For now using - * maximum allowed HIRD threshold value of 0b1100 - */ - reg |= DWC3_DCTL_HIRD_THRES(12); + reg |= DWC3_DCTL_HIRD_THRES(dwc->hird_threshold); /* * When dwc3 revisions >= 2.40a, LPM Erratum is enabled and diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h index 245300be057a..a3a3b6d5668c 100644 --- a/drivers/usb/dwc3/platform_data.h +++ b/drivers/usb/dwc3/platform_data.h @@ -25,6 +25,9 @@ struct dwc3_platform_data { enum usb_dr_mode dr_mode; bool tx_fifo_resize; + unsigned is_utmi_l1_suspend:1; + u8 hird_threshold; + u8 lpm_nyet_threshold; unsigned disable_scramble_quirk:1; |