diff options
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 177 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-mtk.h | 6 |
2 files changed, 65 insertions, 118 deletions
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 1cb2a8ba2de5..6da52df11228 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -57,26 +57,21 @@ /* u2_phy_pll register */ #define CTRL_U2_FORCE_PLL_STB BIT(28) -#define PERI_WK_CTRL0 0x400 -#define UWK_CTR0_0P_LS_PE BIT(8) /* posedge */ -#define UWK_CTR0_0P_LS_NE BIT(7) /* negedge for 0p linestate*/ -#define UWK_CTL1_1P_LS_C(x) (((x) & 0xf) << 1) -#define UWK_CTL1_1P_LS_E BIT(0) - -#define PERI_WK_CTRL1 0x404 -#define UWK_CTL1_IS_C(x) (((x) & 0xf) << 26) -#define UWK_CTL1_IS_E BIT(25) -#define UWK_CTL1_0P_LS_C(x) (((x) & 0xf) << 21) -#define UWK_CTL1_0P_LS_E BIT(20) -#define UWK_CTL1_IDDIG_C(x) (((x) & 0xf) << 11) /* cycle debounce */ -#define UWK_CTL1_IDDIG_E BIT(10) /* enable debounce */ -#define UWK_CTL1_IDDIG_P BIT(9) /* polarity */ -#define UWK_CTL1_0P_LS_P BIT(7) -#define UWK_CTL1_IS_P BIT(6) /* polarity for ip sleep */ - -enum ssusb_wakeup_src { - SSUSB_WK_IP_SLEEP = 1, - SSUSB_WK_LINE_STATE = 2, +/* usb remote wakeup registers in syscon */ +/* mt8173 etc */ +#define PERI_WK_CTRL1 0x4 +#define WC1_IS_C(x) (((x) & 0xf) << 26) /* cycle debounce */ +#define WC1_IS_EN BIT(25) +#define WC1_IS_P BIT(6) /* polarity for ip sleep */ + +/* mt2712 etc */ +#define PERI_SSUSB_SPM_CTRL 0x0 +#define SSC_IP_SLEEP_EN BIT(4) +#define SSC_SPM_INT_EN BIT(1) + +enum ssusb_uwk_vers { + SSUSB_UWK_V1 = 1, + SSUSB_UWK_V2, }; static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk) @@ -296,112 +291,58 @@ static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) } /* only clocks can be turn off for ip-sleep wakeup mode */ -static void usb_wakeup_ip_sleep_en(struct xhci_hcd_mtk *mtk) +static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable) { - u32 tmp; - struct regmap *pericfg = mtk->pericfg; - - regmap_read(pericfg, PERI_WK_CTRL1, &tmp); - tmp &= ~UWK_CTL1_IS_P; - tmp &= ~(UWK_CTL1_IS_C(0xf)); - tmp |= UWK_CTL1_IS_C(0x8); - regmap_write(pericfg, PERI_WK_CTRL1, tmp); - regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_IS_E); - - regmap_read(pericfg, PERI_WK_CTRL1, &tmp); - dev_dbg(mtk->dev, "%s(): WK_CTRL1[P6,E25,C26:29]=%#x\n", - __func__, tmp); + u32 reg, msk, val; + + switch (mtk->uwk_vers) { + case SSUSB_UWK_V1: + reg = mtk->uwk_reg_base + PERI_WK_CTRL1; + msk = WC1_IS_EN | WC1_IS_C(0xf) | WC1_IS_P; + val = enable ? (WC1_IS_EN | WC1_IS_C(0x8)) : 0; + break; + case SSUSB_UWK_V2: + reg = mtk->uwk_reg_base + PERI_SSUSB_SPM_CTRL; + msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN; + val = enable ? msk : 0; + break; + default: + return; + }; + regmap_update_bits(mtk->uwk, reg, msk, val); } -static void usb_wakeup_ip_sleep_dis(struct xhci_hcd_mtk *mtk) +static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk, + struct device_node *dn) { - u32 tmp; + struct of_phandle_args args; + int ret; - regmap_read(mtk->pericfg, PERI_WK_CTRL1, &tmp); - tmp &= ~UWK_CTL1_IS_E; - regmap_write(mtk->pericfg, PERI_WK_CTRL1, tmp); -} + /* Wakeup function is optional */ + mtk->uwk_en = of_property_read_bool(dn, "wakeup-source"); + if (!mtk->uwk_en) + return 0; -/* -* for line-state wakeup mode, phy's power should not power-down -* and only support cable plug in/out -*/ -static void usb_wakeup_line_state_en(struct xhci_hcd_mtk *mtk) -{ - u32 tmp; - struct regmap *pericfg = mtk->pericfg; - - /* line-state of u2-port0 */ - regmap_read(pericfg, PERI_WK_CTRL1, &tmp); - tmp &= ~UWK_CTL1_0P_LS_P; - tmp &= ~(UWK_CTL1_0P_LS_C(0xf)); - tmp |= UWK_CTL1_0P_LS_C(0x8); - regmap_write(pericfg, PERI_WK_CTRL1, tmp); - regmap_read(pericfg, PERI_WK_CTRL1, &tmp); - regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_0P_LS_E); - - /* line-state of u2-port1 */ - regmap_read(pericfg, PERI_WK_CTRL0, &tmp); - tmp &= ~(UWK_CTL1_1P_LS_C(0xf)); - tmp |= UWK_CTL1_1P_LS_C(0x8); - regmap_write(pericfg, PERI_WK_CTRL0, tmp); - regmap_write(pericfg, PERI_WK_CTRL0, tmp | UWK_CTL1_1P_LS_E); -} + ret = of_parse_phandle_with_fixed_args(dn, + "mediatek,syscon-wakeup", 2, 0, &args); + if (ret) + return ret; -static void usb_wakeup_line_state_dis(struct xhci_hcd_mtk *mtk) -{ - u32 tmp; - struct regmap *pericfg = mtk->pericfg; - - /* line-state of u2-port0 */ - regmap_read(pericfg, PERI_WK_CTRL1, &tmp); - tmp &= ~UWK_CTL1_0P_LS_E; - regmap_write(pericfg, PERI_WK_CTRL1, tmp); - - /* line-state of u2-port1 */ - regmap_read(pericfg, PERI_WK_CTRL0, &tmp); - tmp &= ~UWK_CTL1_1P_LS_E; - regmap_write(pericfg, PERI_WK_CTRL0, tmp); -} + mtk->uwk_reg_base = args.args[0]; + mtk->uwk_vers = args.args[1]; + mtk->uwk = syscon_node_to_regmap(args.np); + of_node_put(args.np); + dev_info(mtk->dev, "uwk - reg:0x%x, version:%d\n", + mtk->uwk_reg_base, mtk->uwk_vers); -static void usb_wakeup_enable(struct xhci_hcd_mtk *mtk) -{ - if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP) - usb_wakeup_ip_sleep_en(mtk); - else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE) - usb_wakeup_line_state_en(mtk); -} + return PTR_ERR_OR_ZERO(mtk->uwk); -static void usb_wakeup_disable(struct xhci_hcd_mtk *mtk) -{ - if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP) - usb_wakeup_ip_sleep_dis(mtk); - else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE) - usb_wakeup_line_state_dis(mtk); } -static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk, - struct device_node *dn) +static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable) { - struct device *dev = mtk->dev; - - /* - * wakeup function is optional, so it is not an error if this property - * does not exist, and in such case, no need to get relative - * properties anymore. - */ - of_property_read_u32(dn, "mediatek,wakeup-src", &mtk->wakeup_src); - if (!mtk->wakeup_src) - return 0; - - mtk->pericfg = syscon_regmap_lookup_by_phandle(dn, - "mediatek,syscon-wakeup"); - if (IS_ERR(mtk->pericfg)) { - dev_err(dev, "fail to get pericfg regs\n"); - return PTR_ERR(mtk->pericfg); - } - - return 0; + if (mtk->uwk_en) + usb_wakeup_ip_sleep_set(mtk, enable); } static int xhci_mtk_setup(struct usb_hcd *hcd); @@ -583,8 +524,10 @@ static int xhci_mtk_probe(struct platform_device *pdev) &mtk->u3p_dis_msk); ret = usb_wakeup_of_property_parse(mtk, node); - if (ret) + if (ret) { + dev_err(dev, "failed to parse uwk property\n"); return ret; + } mtk->num_phys = of_count_phandle_with_args(node, "phys", "#phy-cells"); @@ -777,7 +720,7 @@ static int __maybe_unused xhci_mtk_suspend(struct device *dev) xhci_mtk_host_disable(mtk); xhci_mtk_phy_power_off(mtk); xhci_mtk_clks_disable(mtk); - usb_wakeup_enable(mtk); + usb_wakeup_set(mtk, true); return 0; } @@ -787,7 +730,7 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); - usb_wakeup_disable(mtk); + usb_wakeup_set(mtk, false); xhci_mtk_clks_enable(mtk); xhci_mtk_phy_power_on(mtk); xhci_mtk_host_enable(mtk); diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 6b74ce5b7564..cc59d80b663b 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -122,8 +122,12 @@ struct xhci_hcd_mtk { struct regmap *pericfg; struct phy **phys; int num_phys; - int wakeup_src; bool lpm_support; + /* usb remote wakeup */ + bool uwk_en; + struct regmap *uwk; + u32 uwk_reg_base; + u32 uwk_vers; }; static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd) |