diff options
Diffstat (limited to 'drivers/usb/host/xhci-mtk.c')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 891 |
1 files changed, 470 insertions, 421 deletions
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 67d5dc79b6b5..06043c7c3100 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -1,33 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 /* * MediaTek xHCI Host Controller Driver * * Copyright (c) 2015 MediaTek Inc. * Author: * Chunfeng Yun <chunfeng.yun@mediatek.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ -#include <linux/clk.h> +#include <linux/bitfield.h> #include <linux/dma-mapping.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/pm_wakeirq.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> +#include <linux/reset.h> #include "xhci.h" #include "xhci-mtk.h" @@ -43,6 +35,7 @@ /* ip_pw_sts1 register */ #define STS1_IP_SLEEP_STS BIT(30) +#define STS1_U3_MAC_RST BIT(16) #define STS1_XHCI_RST BIT(11) #define STS1_SYS125_RST BIT(10) #define STS1_REF_RST BIT(8) @@ -65,32 +58,153 @@ /* 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, +/* xHCI CSR */ +#define LS_EOF_CFG 0x930 +#define LSEOF_OFFSET 0x89 + +#define FS_EOF_CFG 0x934 +#define FSEOF_OFFSET 0x2e + +#define SS_GEN1_EOF_CFG 0x93c +#define SSG1EOF_OFFSET 0x78 + +#define HFCNTR_CFG 0x944 +#define ITP_DELTA_CLK (0xa << 1) +#define ITP_DELTA_CLK_MASK GENMASK(5, 1) +#define FRMCNT_LEV1_RANG (0x12b << 8) +#define FRMCNT_LEV1_RANG_MASK GENMASK(19, 8) + +#define HSCH_CFG1 0x960 +#define SCH3_RXFIFO_DEPTH_MASK GENMASK(21, 20) + +#define SS_GEN2_EOF_CFG 0x990 +#define SSG2EOF_OFFSET 0x3c + +#define XSEOF_OFFSET_MASK GENMASK(11, 0) + +/* 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 */ + +/* mt8183 */ +#define PERI_WK_CTRL0 0x0 +#define WC0_IS_C(x) ((u32)(((x) & 0xf) << 28)) /* cycle debounce */ +#define WC0_IS_P BIT(12) /* polarity */ +#define WC0_IS_EN BIT(6) + +/* mt8192 */ +#define WC0_SSUSB0_CDEN BIT(6) +#define WC0_IS_SPM_EN BIT(1) + +/* mt8195 */ +#define PERI_WK_CTRL0_8195 0x04 +#define WC0_IS_P_95 BIT(30) /* polarity */ +#define WC0_IS_C_95(x) ((u32)(((x) & 0x7) << 27)) +#define WC0_IS_EN_P3_95 BIT(26) +#define WC0_IS_EN_P2_95 BIT(25) +#define WC0_IS_EN_P1_95 BIT(24) + +#define PERI_WK_CTRL1_8195 0x20 +#define WC1_IS_C_95(x) ((u32)(((x) & 0xf) << 28)) +#define WC1_IS_P_95 BIT(12) +#define WC1_IS_EN_P0_95 BIT(6) + +/* mt2712 etc */ +#define PERI_SSUSB_SPM_CTRL 0x0 +#define SSC_IP_SLEEP_EN BIT(4) +#define SSC_SPM_INT_EN BIT(1) + +#define SCH_FIFO_TO_KB(x) ((x) >> 10) + +enum ssusb_uwk_vers { + SSUSB_UWK_V1 = 1, + SSUSB_UWK_V2, + SSUSB_UWK_V1_1 = 101, /* specific revision 1.01 */ + SSUSB_UWK_V1_2, /* specific revision 1.2 */ + SSUSB_UWK_V1_3, /* mt8195 IP0 */ + SSUSB_UWK_V1_4, /* mt8195 IP1 */ + SSUSB_UWK_V1_5, /* mt8195 IP2 */ + SSUSB_UWK_V1_6, /* mt8195 IP3 */ }; +/* + * MT8195 has 4 controllers, the controller1~3's default SOF/ITP interval + * is calculated from the frame counter clock 24M, but in fact, the clock + * is 48M, add workaround for it. + */ +static void xhci_mtk_set_frame_interval(struct xhci_hcd_mtk *mtk) +{ + struct device *dev = mtk->dev; + struct usb_hcd *hcd = mtk->hcd; + u32 value; + + if (!of_device_is_compatible(dev->of_node, "mediatek,mt8195-xhci")) + return; + + value = readl(hcd->regs + HFCNTR_CFG); + value &= ~(ITP_DELTA_CLK_MASK | FRMCNT_LEV1_RANG_MASK); + value |= (ITP_DELTA_CLK | FRMCNT_LEV1_RANG); + writel(value, hcd->regs + HFCNTR_CFG); + + value = readl(hcd->regs + LS_EOF_CFG); + value &= ~XSEOF_OFFSET_MASK; + value |= LSEOF_OFFSET; + writel(value, hcd->regs + LS_EOF_CFG); + + value = readl(hcd->regs + FS_EOF_CFG); + value &= ~XSEOF_OFFSET_MASK; + value |= FSEOF_OFFSET; + writel(value, hcd->regs + FS_EOF_CFG); + + value = readl(hcd->regs + SS_GEN1_EOF_CFG); + value &= ~XSEOF_OFFSET_MASK; + value |= SSG1EOF_OFFSET; + writel(value, hcd->regs + SS_GEN1_EOF_CFG); + + value = readl(hcd->regs + SS_GEN2_EOF_CFG); + value &= ~XSEOF_OFFSET_MASK; + value |= SSG2EOF_OFFSET; + writel(value, hcd->regs + SS_GEN2_EOF_CFG); +} + +/* + * workaround: usb3.2 gen1 isoc rx hw issue + * host send out unexpected ACK afer device fininsh a burst transfer with + * a short packet. + */ +static void xhci_mtk_rxfifo_depth_set(struct xhci_hcd_mtk *mtk) +{ + struct usb_hcd *hcd = mtk->hcd; + u32 value; + + if (!mtk->rxfifo_depth) + return; + + value = readl(hcd->regs + HSCH_CFG1); + value &= ~SCH3_RXFIFO_DEPTH_MASK; + value |= FIELD_PREP(SCH3_RXFIFO_DEPTH_MASK, + SCH_FIFO_TO_KB(mtk->rxfifo_depth) - 1); + writel(value, hcd->regs + HSCH_CFG1); +} + +static void xhci_mtk_init_quirk(struct xhci_hcd_mtk *mtk) +{ + /* workaround only for mt8195 */ + xhci_mtk_set_frame_interval(mtk); + + /* workaround for SoCs using SSUSB about before IPM v1.6.0 */ + xhci_mtk_rxfifo_depth_set(mtk); +} + static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk) { struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs; u32 value, check_val; + int u3_ports_disabled = 0; int ret; int i; @@ -102,16 +216,24 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk) value &= ~CTRL1_IP_HOST_PDN; writel(value, &ippc->ip_pw_ctr1); - /* power on and enable all u3 ports */ + /* power on and enable u3 ports except skipped ones */ for (i = 0; i < mtk->num_u3_ports; i++) { + if ((0x1 << i) & mtk->u3p_dis_msk) { + u3_ports_disabled++; + continue; + } + value = readl(&ippc->u3_ctrl_p[i]); value &= ~(CTRL_U3_PORT_PDN | CTRL_U3_PORT_DIS); value |= CTRL_U3_PORT_HOST_SEL; writel(value, &ippc->u3_ctrl_p[i]); } - /* power on and enable all u2 ports */ + /* power on and enable all u2 ports except skipped ones */ for (i = 0; i < mtk->num_u2_ports; i++) { + if (BIT(i) & mtk->u2p_dis_msk) + continue; + value = readl(&ippc->u2_ctrl_p[i]); value &= ~(CTRL_U2_PORT_PDN | CTRL_U2_PORT_DIS); value |= CTRL_U2_PORT_HOST_SEL; @@ -125,6 +247,9 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk) check_val = STS1_SYSPLL_STABLE | STS1_REF_RST | STS1_SYS125_RST | STS1_XHCI_RST; + if (mtk->num_u3_ports > u3_ports_disabled) + check_val |= STS1_U3_MAC_RST; + ret = readl_poll_timeout(&ippc->ip_pw_sts1, value, (check_val == (value & check_val)), 100, 20000); if (ret) { @@ -145,15 +270,21 @@ static int xhci_mtk_host_disable(struct xhci_hcd_mtk *mtk) if (!mtk->has_ippc) return 0; - /* power down all u3 ports */ + /* power down u3 ports except skipped ones */ for (i = 0; i < mtk->num_u3_ports; i++) { + if ((0x1 << i) & mtk->u3p_dis_msk) + continue; + value = readl(&ippc->u3_ctrl_p[i]); value |= CTRL_U3_PORT_PDN; writel(value, &ippc->u3_ctrl_p[i]); } - /* power down all u2 ports */ + /* power down all u2 ports except skipped ones */ for (i = 0; i < mtk->num_u2_ports; i++) { + if (BIT(i) & mtk->u2p_dis_msk) + continue; + value = readl(&ippc->u2_ctrl_p[i]); value |= CTRL_U2_PORT_PDN; writel(value, &ippc->u2_ctrl_p[i]); @@ -167,11 +298,12 @@ static int xhci_mtk_host_disable(struct xhci_hcd_mtk *mtk) /* wait for host ip to sleep */ ret = readl_poll_timeout(&ippc->ip_pw_sts1, value, (value & STS1_IP_SLEEP_STS), 100, 100000); - if (ret) { + if (ret) dev_err(mtk->dev, "ip sleep failed!!!\n"); - return ret; - } - return 0; + else /* workaound for platforms using low level latch */ + usleep_range(100, 200); + + return ret; } static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk) @@ -208,264 +340,112 @@ static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk) return xhci_mtk_host_enable(mtk); } -static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) -{ - int ret; - - ret = clk_prepare_enable(mtk->ref_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable ref_clk\n"); - goto ref_clk_err; - } - - ret = clk_prepare_enable(mtk->sys_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable sys_clk\n"); - goto sys_clk_err; - } - - if (mtk->wakeup_src) { - ret = clk_prepare_enable(mtk->wk_deb_p0); - if (ret) { - dev_err(mtk->dev, "failed to enable wk_deb_p0\n"); - goto usb_p0_err; - } - - ret = clk_prepare_enable(mtk->wk_deb_p1); - if (ret) { - dev_err(mtk->dev, "failed to enable wk_deb_p1\n"); - goto usb_p1_err; - } - } - return 0; - -usb_p1_err: - clk_disable_unprepare(mtk->wk_deb_p0); -usb_p0_err: - clk_disable_unprepare(mtk->sys_clk); -sys_clk_err: - clk_disable_unprepare(mtk->ref_clk); -ref_clk_err: - return -EINVAL; -} - -static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) -{ - if (mtk->wakeup_src) { - clk_disable_unprepare(mtk->wk_deb_p1); - clk_disable_unprepare(mtk->wk_deb_p0); - } - clk_disable_unprepare(mtk->sys_clk); - clk_disable_unprepare(mtk->ref_clk); -} - /* 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); -} - -static void usb_wakeup_ip_sleep_dis(struct xhci_hcd_mtk *mtk) -{ - u32 tmp; - - regmap_read(mtk->pericfg, PERI_WK_CTRL1, &tmp); - tmp &= ~UWK_CTL1_IS_E; - regmap_write(mtk->pericfg, PERI_WK_CTRL1, tmp); -} - -/* -* 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); -} - -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); -} - -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); -} - -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); + 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_V1_1: + reg = mtk->uwk_reg_base + PERI_WK_CTRL0; + msk = WC0_IS_EN | WC0_IS_C(0xf) | WC0_IS_P; + val = enable ? (WC0_IS_EN | WC0_IS_C(0x1)) : 0; + break; + case SSUSB_UWK_V1_2: + reg = mtk->uwk_reg_base + PERI_WK_CTRL0; + msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN; + val = enable ? msk : 0; + break; + case SSUSB_UWK_V1_3: + reg = mtk->uwk_reg_base + PERI_WK_CTRL1_8195; + msk = WC1_IS_EN_P0_95 | WC1_IS_C_95(0xf) | WC1_IS_P_95; + val = enable ? (WC1_IS_EN_P0_95 | WC1_IS_C_95(0x1)) : 0; + break; + case SSUSB_UWK_V1_4: + reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195; + msk = WC0_IS_EN_P1_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95; + val = enable ? (WC0_IS_EN_P1_95 | WC0_IS_C_95(0x1)) : 0; + break; + case SSUSB_UWK_V1_5: + reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195; + msk = WC0_IS_EN_P2_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95; + val = enable ? (WC0_IS_EN_P2_95 | WC0_IS_C_95(0x1)) : 0; + break; + case SSUSB_UWK_V1_6: + reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195; + msk = WC0_IS_EN_P3_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95; + val = enable ? (WC0_IS_EN_P3_95 | WC0_IS_C_95(0x1)) : 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 int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk, struct device_node *dn) { - struct device *dev = mtk->dev; + struct of_phandle_args args; + int ret; - /* - * 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) + /* Wakeup function is optional */ + mtk->uwk_en = of_property_read_bool(dn, "wakeup-source"); + if (!mtk->uwk_en) return 0; - mtk->wk_deb_p0 = devm_clk_get(dev, "wakeup_deb_p0"); - if (IS_ERR(mtk->wk_deb_p0)) { - dev_err(dev, "fail to get wakeup_deb_p0\n"); - return PTR_ERR(mtk->wk_deb_p0); - } - - mtk->wk_deb_p1 = devm_clk_get(dev, "wakeup_deb_p1"); - if (IS_ERR(mtk->wk_deb_p1)) { - dev_err(dev, "fail to get wakeup_deb_p1\n"); - return PTR_ERR(mtk->wk_deb_p1); - } - - 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; -} - -static int xhci_mtk_setup(struct usb_hcd *hcd); -static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = { - .reset = xhci_mtk_setup, -}; - -static struct hc_driver __read_mostly xhci_mtk_hc_driver; - -static int xhci_mtk_phy_init(struct xhci_hcd_mtk *mtk) -{ - int i; - int ret; - - for (i = 0; i < mtk->num_phys; i++) { - ret = phy_init(mtk->phys[i]); - if (ret) - goto exit_phy; - } - return 0; + ret = of_parse_phandle_with_fixed_args(dn, + "mediatek,syscon-wakeup", 2, 0, &args); + if (ret) + return ret; -exit_phy: - for (; i > 0; i--) - phy_exit(mtk->phys[i - 1]); + 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); - return ret; + return PTR_ERR_OR_ZERO(mtk->uwk); } -static int xhci_mtk_phy_exit(struct xhci_hcd_mtk *mtk) +static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable) { - int i; - - for (i = 0; i < mtk->num_phys; i++) - phy_exit(mtk->phys[i]); - - return 0; + if (mtk->uwk_en) + usb_wakeup_ip_sleep_set(mtk, enable); } -static int xhci_mtk_phy_power_on(struct xhci_hcd_mtk *mtk) +static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk) { - int i; - int ret; - - for (i = 0; i < mtk->num_phys; i++) { - ret = phy_power_on(mtk->phys[i]); - if (ret) - goto power_off_phy; - } - return 0; + struct clk_bulk_data *clks = mtk->clks; -power_off_phy: - for (; i > 0; i--) - phy_power_off(mtk->phys[i - 1]); + clks[0].id = "sys_ck"; + clks[1].id = "xhci_ck"; + clks[2].id = "ref_ck"; + clks[3].id = "mcu_ck"; + clks[4].id = "dma_ck"; + clks[5].id = "frmcnt_ck"; - return ret; + return devm_clk_bulk_get_optional(mtk->dev, BULK_CLKS_NUM, clks); } -static void xhci_mtk_phy_power_off(struct xhci_hcd_mtk *mtk) +static int xhci_mtk_vregs_get(struct xhci_hcd_mtk *mtk) { - unsigned int i; - - for (i = 0; i < mtk->num_phys; i++) - phy_power_off(mtk->phys[i]); -} - -static int xhci_mtk_ldos_enable(struct xhci_hcd_mtk *mtk) -{ - int ret; - - ret = regulator_enable(mtk->vbus); - if (ret) { - dev_err(mtk->dev, "failed to enable vbus\n"); - return ret; - } + struct regulator_bulk_data *supplies = mtk->supplies; - ret = regulator_enable(mtk->vusb33); - if (ret) { - dev_err(mtk->dev, "failed to enable vusb33\n"); - regulator_disable(mtk->vbus); - return ret; - } - return 0; -} + supplies[0].supply = "vbus"; + supplies[1].supply = "vusb33"; -static void xhci_mtk_ldos_disable(struct xhci_hcd_mtk *mtk) -{ - regulator_disable(mtk->vbus); - regulator_disable(mtk->vusb33); + return devm_regulator_bulk_get(mtk->dev, BULK_VREGS_NUM, supplies); } static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci) @@ -473,12 +453,6 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci) struct usb_hcd *hcd = xhci_to_hcd(xhci); struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd); - /* - * As of now platform drivers don't provide MSI support so we ensure - * here that the generic code does not try to make a pci_dev from our - * dev struct in order to setup MSI - */ - xhci->quirks |= XHCI_PLAT; xhci->quirks |= XHCI_MTK_HOST; /* * MTK host controller gives a spurious successful event after a @@ -487,12 +461,20 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_SPURIOUS_SUCCESS; if (mtk->lpm_support) xhci->quirks |= XHCI_LPM_SUPPORT; + if (mtk->u2_lpm_disable) + xhci->quirks |= XHCI_HW_LPM_DISABLE; + + /* + * MTK xHCI 0.96: PSA is 1 by default even if doesn't support stream, + * and it's 3 when support it. + */ + if (xhci->hci_version < 0x100 && HCC_MAX_PSA(xhci->hcc_params) == 4) + xhci->quirks |= XHCI_BROKEN_STREAMS; } /* called during probe() after chip reset completes */ static int xhci_mtk_setup(struct usb_hcd *hcd) { - struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd); int ret; @@ -500,23 +482,30 @@ static int xhci_mtk_setup(struct usb_hcd *hcd) ret = xhci_mtk_ssusb_config(mtk); if (ret) return ret; + + xhci_mtk_init_quirk(mtk); } ret = xhci_gen_setup(hcd, xhci_mtk_quirks); if (ret) return ret; - if (usb_hcd_is_primary_hcd(hcd)) { - mtk->num_u3_ports = xhci->num_usb3_ports; - mtk->num_u2_ports = xhci->num_usb2_ports; + if (usb_hcd_is_primary_hcd(hcd)) ret = xhci_mtk_sch_init(mtk); - if (ret) - return ret; - } return ret; } +static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = { + .reset = xhci_mtk_setup, + .add_endpoint = xhci_mtk_add_ep, + .drop_endpoint = xhci_mtk_drop_ep, + .check_bandwidth = xhci_mtk_check_bandwidth, + .reset_bandwidth = xhci_mtk_reset_bandwidth, +}; + +static struct hc_driver __read_mostly xhci_mtk_hc_driver; + static int xhci_mtk_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -525,10 +514,10 @@ static int xhci_mtk_probe(struct platform_device *pdev) const struct hc_driver *driver; struct xhci_hcd *xhci; struct resource *res; + struct usb_hcd *usb3_hcd; struct usb_hcd *hcd; - struct phy *phy; - int phy_num; int ret = -ENODEV; + int wakeup_irq; int irq; if (usb_disabled()) @@ -540,81 +529,66 @@ static int xhci_mtk_probe(struct platform_device *pdev) return -ENOMEM; mtk->dev = dev; - mtk->vbus = devm_regulator_get(dev, "vbus"); - if (IS_ERR(mtk->vbus)) { - dev_err(dev, "fail to get vbus\n"); - return PTR_ERR(mtk->vbus); - } - mtk->vusb33 = devm_regulator_get(dev, "vusb33"); - if (IS_ERR(mtk->vusb33)) { - dev_err(dev, "fail to get vusb33\n"); - return PTR_ERR(mtk->vusb33); - } + ret = xhci_mtk_vregs_get(mtk); + if (ret) + return dev_err_probe(dev, ret, "Failed to get regulators\n"); - mtk->sys_clk = devm_clk_get(dev, "sys_ck"); - if (IS_ERR(mtk->sys_clk)) { - dev_err(dev, "fail to get sys_ck\n"); - return PTR_ERR(mtk->sys_clk); - } + ret = xhci_mtk_clks_get(mtk); + if (ret) + return ret; - /* - * reference clock is usually a "fixed-clock", make it optional - * for backward compatibility and ignore the error if it does - * not exist. - */ - mtk->ref_clk = devm_clk_get(dev, "ref_ck"); - if (IS_ERR(mtk->ref_clk)) { - if (PTR_ERR(mtk->ref_clk) == -EPROBE_DEFER) - return -EPROBE_DEFER; + irq = platform_get_irq_byname_optional(pdev, "host"); + if (irq < 0) { + if (irq == -EPROBE_DEFER) + return irq; - mtk->ref_clk = NULL; + /* for backward compatibility */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; } + wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup"); + if (wakeup_irq == -EPROBE_DEFER) + return wakeup_irq; + mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable"); + mtk->u2_lpm_disable = of_property_read_bool(node, "usb2-lpm-disable"); + /* optional property, ignore the error if it does not exist */ + of_property_read_u32(node, "mediatek,u3p-dis-msk", + &mtk->u3p_dis_msk); + of_property_read_u32(node, "mediatek,u2p-dis-msk", + &mtk->u2p_dis_msk); + + of_property_read_u32(node, "rx-fifo-depth", &mtk->rxfifo_depth); 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"); - if (mtk->num_phys > 0) { - mtk->phys = devm_kcalloc(dev, mtk->num_phys, - sizeof(*mtk->phys), GFP_KERNEL); - if (!mtk->phys) - return -ENOMEM; - } else { - mtk->num_phys = 0; } + + pm_runtime_set_active(dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, 4000); pm_runtime_enable(dev); pm_runtime_get_sync(dev); - device_enable_async_suspend(dev); - ret = xhci_mtk_ldos_enable(mtk); + ret = regulator_bulk_enable(BULK_VREGS_NUM, mtk->supplies); if (ret) goto disable_pm; - ret = xhci_mtk_clks_enable(mtk); + ret = clk_bulk_prepare_enable(BULK_CLKS_NUM, mtk->clks); if (ret) goto disable_ldos; - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - ret = irq; + ret = device_reset_optional(dev); + if (ret) { + dev_err_probe(dev, ret, "failed to reset controller\n"); goto disable_clk; } - /* Initialize dma_mask and coherent_dma_mask to 32-bits */ - ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); - if (ret) - goto disable_clk; - - if (!dev->dma_mask) - dev->dma_mask = &dev->coherent_dma_mask; - else - dma_set_mask(dev, DMA_BIT_MASK(32)); - hcd = usb_create_hcd(driver, dev, dev_name(dev)); if (!hcd) { ret = -ENOMEM; @@ -645,127 +619,155 @@ static int xhci_mtk_probe(struct platform_device *pdev) goto put_usb2_hcd; } mtk->has_ippc = true; - } else { - mtk->has_ippc = false; } - for (phy_num = 0; phy_num < mtk->num_phys; phy_num++) { - phy = devm_of_phy_get_by_index(dev, node, phy_num); - if (IS_ERR(phy)) { - ret = PTR_ERR(phy); - goto put_usb2_hcd; - } - mtk->phys[phy_num] = phy; - } - - ret = xhci_mtk_phy_init(mtk); - if (ret) - goto put_usb2_hcd; - - ret = xhci_mtk_phy_power_on(mtk); - if (ret) - goto exit_phys; - device_init_wakeup(dev, true); + dma_set_max_seg_size(dev, UINT_MAX); xhci = hcd_to_xhci(hcd); xhci->main_hcd = hcd; - xhci->shared_hcd = usb_create_shared_hcd(driver, dev, - dev_name(dev), hcd); - if (!xhci->shared_hcd) { - ret = -ENOMEM; - goto power_off_phys; - } + xhci->allow_single_roothub = 1; + + /* + * imod_interval is the interrupt moderation value in nanoseconds. + * The increment interval is 8 times as much as that defined in + * the xHCI spec on MTK's controller. + */ + xhci->imod_interval = 5000; + device_property_read_u32(dev, "imod-interval-ns", &xhci->imod_interval); ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) - goto put_usb3_hcd; + goto disable_device_wakeup; + + if (!xhci_has_one_roothub(xhci)) { + xhci->shared_hcd = usb_create_shared_hcd(driver, dev, + dev_name(dev), hcd); + if (!xhci->shared_hcd) { + ret = -ENOMEM; + goto dealloc_usb2_hcd; + } + } - if (HCC_MAX_PSA(xhci->hcc_params) >= 4) - xhci->shared_hcd->can_do_streams = 1; + usb3_hcd = xhci_get_usb3_hcd(xhci); + if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4 && + !(xhci->quirks & XHCI_BROKEN_STREAMS)) + usb3_hcd->can_do_streams = 1; - ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); - if (ret) - goto dealloc_usb2_hcd; + if (xhci->shared_hcd) { + ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); + if (ret) + goto put_usb3_hcd; + } + + if (wakeup_irq > 0) { + ret = dev_pm_set_dedicated_wake_irq_reverse(dev, wakeup_irq); + if (ret) { + dev_err(dev, "set wakeup irq %d failed\n", wakeup_irq); + goto dealloc_usb3_hcd; + } + dev_info(dev, "wakeup irq %d\n", wakeup_irq); + } + + device_enable_async_suspend(dev); + pm_runtime_put_autosuspend(dev); + pm_runtime_forbid(dev); return 0; -dealloc_usb2_hcd: - usb_remove_hcd(hcd); +dealloc_usb3_hcd: + usb_remove_hcd(xhci->shared_hcd); put_usb3_hcd: - xhci_mtk_sch_exit(mtk); usb_put_hcd(xhci->shared_hcd); -power_off_phys: - xhci_mtk_phy_power_off(mtk); - device_init_wakeup(dev, false); +dealloc_usb2_hcd: + xhci_mtk_sch_exit(mtk); + usb_remove_hcd(hcd); -exit_phys: - xhci_mtk_phy_exit(mtk); +disable_device_wakeup: + device_init_wakeup(dev, false); put_usb2_hcd: usb_put_hcd(hcd); disable_clk: - xhci_mtk_clks_disable(mtk); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); disable_ldos: - xhci_mtk_ldos_disable(mtk); + regulator_bulk_disable(BULK_VREGS_NUM, mtk->supplies); disable_pm: - pm_runtime_put_sync(dev); + pm_runtime_put_noidle(dev); pm_runtime_disable(dev); return ret; } -static int xhci_mtk_remove(struct platform_device *dev) +static void xhci_mtk_remove(struct platform_device *pdev) { - struct xhci_hcd_mtk *mtk = platform_get_drvdata(dev); + struct xhci_hcd_mtk *mtk = platform_get_drvdata(pdev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct usb_hcd *shared_hcd = xhci->shared_hcd; + struct device *dev = &pdev->dev; - usb_remove_hcd(xhci->shared_hcd); - xhci_mtk_phy_power_off(mtk); - xhci_mtk_phy_exit(mtk); - device_init_wakeup(&dev->dev, false); + pm_runtime_get_sync(dev); + xhci->xhc_state |= XHCI_STATE_REMOVING; + dev_pm_clear_wake_irq(dev); + device_init_wakeup(dev, false); + if (shared_hcd) { + usb_remove_hcd(shared_hcd); + xhci->shared_hcd = NULL; + } usb_remove_hcd(hcd); - usb_put_hcd(xhci->shared_hcd); + + if (shared_hcd) + usb_put_hcd(shared_hcd); + usb_put_hcd(hcd); xhci_mtk_sch_exit(mtk); - xhci_mtk_clks_disable(mtk); - xhci_mtk_ldos_disable(mtk); - pm_runtime_put_sync(&dev->dev); - pm_runtime_disable(&dev->dev); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); + regulator_bulk_disable(BULK_VREGS_NUM, mtk->supplies); - return 0; + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + pm_runtime_set_suspended(dev); } -/* - * if ip sleep fails, and all clocks are disabled, access register will hang - * AHB bus, so stop polling roothubs to avoid regs access on bus suspend. - * and no need to check whether ip sleep failed or not; this will cause SPM - * to wake up system immediately after system suspend complete if ip sleep - * fails, it is what we wanted. - */ static int __maybe_unused xhci_mtk_suspend(struct device *dev) { struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct usb_hcd *shared_hcd = xhci->shared_hcd; + int ret; xhci_dbg(xhci, "%s: stop port polling\n", __func__); clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - del_timer_sync(&hcd->rh_timer); - clear_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); - del_timer_sync(&xhci->shared_hcd->rh_timer); - - xhci_mtk_host_disable(mtk); - xhci_mtk_phy_power_off(mtk); - xhci_mtk_clks_disable(mtk); - usb_wakeup_enable(mtk); + timer_delete_sync(&hcd->rh_timer); + if (shared_hcd) { + clear_bit(HCD_FLAG_POLL_RH, &shared_hcd->flags); + timer_delete_sync(&shared_hcd->rh_timer); + } + + ret = xhci_mtk_host_disable(mtk); + if (ret) + goto restart_poll_rh; + + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); + usb_wakeup_set(mtk, true); return 0; + +restart_poll_rh: + xhci_dbg(xhci, "%s: restart port polling\n", __func__); + if (shared_hcd) { + set_bit(HCD_FLAG_POLL_RH, &shared_hcd->flags); + usb_hcd_poll_rh_status(shared_hcd); + } + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); + usb_hcd_poll_rh_status(hcd); + return ret; } static int __maybe_unused xhci_mtk_resume(struct device *dev) @@ -773,43 +775,90 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct usb_hcd *shared_hcd = xhci->shared_hcd; + int ret; + + usb_wakeup_set(mtk, false); + ret = clk_bulk_prepare_enable(BULK_CLKS_NUM, mtk->clks); + if (ret) + goto enable_wakeup; - usb_wakeup_disable(mtk); - xhci_mtk_clks_enable(mtk); - xhci_mtk_phy_power_on(mtk); - xhci_mtk_host_enable(mtk); + ret = xhci_mtk_host_enable(mtk); + if (ret) + goto disable_clks; xhci_dbg(xhci, "%s: restart port polling\n", __func__); + if (shared_hcd) { + set_bit(HCD_FLAG_POLL_RH, &shared_hcd->flags); + usb_hcd_poll_rh_status(shared_hcd); + } set_bit(HCD_FLAG_POLL_RH, &hcd->flags); usb_hcd_poll_rh_status(hcd); - set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); - usb_hcd_poll_rh_status(xhci->shared_hcd); return 0; + +disable_clks: + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); +enable_wakeup: + usb_wakeup_set(mtk, true); + return ret; +} + +static int __maybe_unused xhci_mtk_runtime_suspend(struct device *dev) +{ + struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd); + int ret = 0; + + if (xhci->xhc_state) + return -ESHUTDOWN; + + if (device_may_wakeup(dev)) + ret = xhci_mtk_suspend(dev); + + /* -EBUSY: let PM automatically reschedule another autosuspend */ + return ret ? -EBUSY : 0; +} + +static int __maybe_unused xhci_mtk_runtime_resume(struct device *dev) +{ + struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd); + int ret = 0; + + if (xhci->xhc_state) + return -ESHUTDOWN; + + if (device_may_wakeup(dev)) + ret = xhci_mtk_resume(dev); + + return ret; } static const struct dev_pm_ops xhci_mtk_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(xhci_mtk_suspend, xhci_mtk_resume) + SET_RUNTIME_PM_OPS(xhci_mtk_runtime_suspend, + xhci_mtk_runtime_resume, NULL) }; -#define DEV_PM_OPS IS_ENABLED(CONFIG_PM) ? &xhci_mtk_pm_ops : NULL -#ifdef CONFIG_OF +#define DEV_PM_OPS (IS_ENABLED(CONFIG_PM) ? &xhci_mtk_pm_ops : NULL) + static const struct of_device_id mtk_xhci_of_match[] = { { .compatible = "mediatek,mt8173-xhci"}, + { .compatible = "mediatek,mt8195-xhci"}, + { .compatible = "mediatek,mtk-xhci"}, { }, }; MODULE_DEVICE_TABLE(of, mtk_xhci_of_match); -#endif static struct platform_driver mtk_xhci_driver = { .probe = xhci_mtk_probe, - .remove = xhci_mtk_remove, + .remove = xhci_mtk_remove, .driver = { .name = "xhci-mtk", .pm = DEV_PM_OPS, - .of_match_table = of_match_ptr(mtk_xhci_of_match), + .of_match_table = mtk_xhci_of_match, }, }; -MODULE_ALIAS("platform:xhci-mtk"); static int __init xhci_mtk_init(void) { |