diff options
Diffstat (limited to 'drivers/usb/cdns3/cdnsp-gadget.c')
| -rw-r--r-- | drivers/usb/cdns3/cdnsp-gadget.c | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c index 4a3f0f958256..4824a10df07e 100644 --- a/drivers/usb/cdns3/cdnsp-gadget.c +++ b/drivers/usb/cdns3/cdnsp-gadget.c @@ -15,6 +15,7 @@ #include <linux/delay.h> #include <linux/log2.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/pci.h> #include <linux/irq.h> #include <linux/dmi.h> @@ -138,6 +139,26 @@ static void cdnsp_clear_port_change_bit(struct cdnsp_device *pdev, (portsc & PORT_CHANGE_BITS), port_regs); } +static void cdnsp_set_apb_timeout_value(struct cdnsp_device *pdev) +{ + struct cdns *cdns = dev_get_drvdata(pdev->dev); + __le32 __iomem *reg; + void __iomem *base; + u32 offset = 0; + u32 val; + + if (!cdns->override_apb_timeout) + return; + + base = &pdev->cap_regs->hc_capbase; + offset = cdnsp_find_next_ext_cap(base, offset, D_XEC_PRE_REGS_CAP); + reg = base + offset + REG_CHICKEN_BITS_3_OFFSET; + + val = le32_to_cpu(readl(reg)); + val = CHICKEN_APB_TIMEOUT_SET(val, cdns->override_apb_timeout); + writel(cpu_to_le32(val), reg); +} + static void cdnsp_set_chicken_bits_2(struct cdnsp_device *pdev, u32 bit) { __le32 __iomem *reg; @@ -1671,12 +1692,12 @@ static int cdnsp_gadget_init_endpoints(struct cdnsp_device *pdev) "CTRL: %s, INT: %s, BULK: %s, ISOC %s, " "SupDir IN: %s, OUT: %s\n", pep->name, 1024, - (pep->endpoint.caps.type_control) ? "yes" : "no", - (pep->endpoint.caps.type_int) ? "yes" : "no", - (pep->endpoint.caps.type_bulk) ? "yes" : "no", - (pep->endpoint.caps.type_iso) ? "yes" : "no", - (pep->endpoint.caps.dir_in) ? "yes" : "no", - (pep->endpoint.caps.dir_out) ? "yes" : "no"); + str_yes_no(pep->endpoint.caps.type_control), + str_yes_no(pep->endpoint.caps.type_int), + str_yes_no(pep->endpoint.caps.type_bulk), + str_yes_no(pep->endpoint.caps.type_iso), + str_yes_no(pep->endpoint.caps.dir_in), + str_yes_no(pep->endpoint.caps.dir_out)); INIT_LIST_HEAD(&pep->pending_list); } @@ -1772,6 +1793,8 @@ static void cdnsp_get_rev_cap(struct cdnsp_device *pdev) reg += cdnsp_find_next_ext_cap(reg, 0, RTL_REV_CAP); pdev->rev_cap = reg; + pdev->rtl_revision = readl(&pdev->rev_cap->rtl_revision); + dev_info(pdev->dev, "Rev: %08x/%08x, eps: %08x, buff: %08x/%08x\n", readl(&pdev->rev_cap->ctrl_revision), readl(&pdev->rev_cap->rtl_revision), @@ -1797,6 +1820,15 @@ static int cdnsp_gen_setup(struct cdnsp_device *pdev) pdev->hci_version = HC_VERSION(pdev->hcc_params); pdev->hcc_params = readl(&pdev->cap_regs->hcc_params); + /* + * Override the APB timeout value to give the controller more time for + * enabling UTMI clock and synchronizing APB and UTMI clock domains. + * This fix is platform specific and is required to fixes issue with + * reading incorrect value from PORTSC register after resuming + * from L1 state. + */ + cdnsp_set_apb_timeout_value(pdev); + cdnsp_get_rev_cap(pdev); /* Make sure the Device Controller is halted. */ @@ -1973,7 +2005,7 @@ static int cdnsp_gadget_suspend(struct cdns *cdns, bool do_wakeup) return 0; } -static int cdnsp_gadget_resume(struct cdns *cdns, bool hibernated) +static int cdnsp_gadget_resume(struct cdns *cdns, bool lost_power) { struct cdnsp_device *pdev = cdns->gadget_dev; enum usb_device_speed max_speed; |