| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kamil Debski | 1364 | 99.85% | 1 | 50.00% |
| Thomas Gleixner | 2 | 0.15% | 1 | 50.00% |
| Total | 1366 | 2 |
// SPDX-License-Identifier: GPL-2.0-only /* * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support * * Copyright (C) 2013 Samsung Electronics Co., Ltd. * Author: Kamil Debski <k.debski@samsung.com> */ #include <linux/delay.h> #include <linux/io.h> #include <linux/phy/phy.h> #include <linux/regmap.h> #include "phy-samsung-usb2.h" /* Exynos USB PHY registers */ #define EXYNOS_5250_REFCLKSEL_CRYSTAL 0x0 #define EXYNOS_5250_REFCLKSEL_XO 0x1 #define EXYNOS_5250_REFCLKSEL_CLKCORE 0x2 #define EXYNOS_5250_FSEL_9MHZ6 0x0 #define EXYNOS_5250_FSEL_10MHZ 0x1 #define EXYNOS_5250_FSEL_12MHZ 0x2 #define EXYNOS_5250_FSEL_19MHZ2 0x3 #define EXYNOS_5250_FSEL_20MHZ 0x4 #define EXYNOS_5250_FSEL_24MHZ 0x5 #define EXYNOS_5250_FSEL_50MHZ 0x7 /* Normal host */ #define EXYNOS_5250_HOSTPHYCTRL0 0x0 #define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL BIT(31) #define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT 19 #define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK \ (0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT) #define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT 16 #define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \ (0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT) #define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN BIT(11) #define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE BIT(10) #define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N BIT(9) #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK (0x3 << 7) #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL (0x0 << 7) #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0 (0x1 << 7) #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST (0x2 << 7) #define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ BIT(6) #define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP BIT(5) #define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND BIT(4) #define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE BIT(3) #define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST BIT(2) #define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST BIT(1) #define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST BIT(0) /* HSIC0 & HSIC1 */ #define EXYNOS_5250_HSICPHYCTRL1 0x10 #define EXYNOS_5250_HSICPHYCTRL2 0x20 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_MASK (0x3 << 23) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT (0x2 << 23) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_MASK (0x7f << 16) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 (0x24 << 16) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_15 (0x1c << 16) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_16 (0x1a << 16) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_19_2 (0x15 << 16) #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_20 (0x14 << 16) #define EXYNOS_5250_HSICPHYCTRLX_SIDDQ BIT(6) #define EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP BIT(5) #define EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND BIT(4) #define EXYNOS_5250_HSICPHYCTRLX_WORDINTERFACE BIT(3) #define EXYNOS_5250_HSICPHYCTRLX_UTMISWRST BIT(2) #define EXYNOS_5250_HSICPHYCTRLX_PHYSWRST BIT(0) /* EHCI control */ #define EXYNOS_5250_HOSTEHCICTRL 0x30 #define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN BIT(29) #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 BIT(28) #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 BIT(27) #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16 BIT(26) #define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN BIT(25) #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT 19 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT) #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT 13 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK \ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT) #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT 7 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT) #define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT 1 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \ (0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT) #define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE BIT(0) /* OHCI control */ #define EXYNOS_5250_HOSTOHCICTRL 0x34 #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT 1 #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \ (0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT) #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN BIT(0) /* USBOTG */ #define EXYNOS_5250_USBOTGSYS 0x38 #define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET BIT(14) #define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG BIT(13) #define EXYNOS_5250_USBOTGSYS_PHY_SW_RST BIT(12) #define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT 9 #define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \ (0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT) #define EXYNOS_5250_USBOTGSYS_ID_PULLUP BIT(8) #define EXYNOS_5250_USBOTGSYS_COMMON_ON BIT(7) #define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT 4 #define EXYNOS_5250_USBOTGSYS_FSEL_MASK \ (0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT) #define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP BIT(3) #define EXYNOS_5250_USBOTGSYS_OTGDISABLE BIT(2) #define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG BIT(1) #define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND BIT(0) /* Isolation, configured in the power management unit */ #define EXYNOS_5250_USB_ISOL_OTG_OFFSET 0x704 #define EXYNOS_5250_USB_ISOL_OTG BIT(0) #define EXYNOS_5250_USB_ISOL_HOST_OFFSET 0x708 #define EXYNOS_5250_USB_ISOL_HOST BIT(0) /* Mode swtich register */ #define EXYNOS_5250_MODE_SWITCH_OFFSET 0x230 #define EXYNOS_5250_MODE_SWITCH_MASK 1 #define EXYNOS_5250_MODE_SWITCH_DEVICE 0 #define EXYNOS_5250_MODE_SWITCH_HOST 1 enum exynos4x12_phy_id { EXYNOS5250_DEVICE, EXYNOS5250_HOST, EXYNOS5250_HSIC0, EXYNOS5250_HSIC1, EXYNOS5250_NUM_PHYS, }; /* * exynos5250_rate_to_clk() converts the supplied clock rate to the value that * can be written to the phy register. */ static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg) { /* EXYNOS_5250_FSEL_MASK */ switch (rate) { case 9600 * KHZ: *reg = EXYNOS_5250_FSEL_9MHZ6; break; case 10 * MHZ: *reg = EXYNOS_5250_FSEL_10MHZ; break; case 12 * MHZ: *reg = EXYNOS_5250_FSEL_12MHZ; break; case 19200 * KHZ: *reg = EXYNOS_5250_FSEL_19MHZ2; break; case 20 * MHZ: *reg = EXYNOS_5250_FSEL_20MHZ; break; case 24 * MHZ: *reg = EXYNOS_5250_FSEL_24MHZ; break; case 50 * MHZ: *reg = EXYNOS_5250_FSEL_50MHZ; break; default: return -EINVAL; } return 0; } static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on) { struct samsung_usb2_phy_driver *drv = inst->drv; u32 offset; u32 mask; switch (inst->cfg->id) { case EXYNOS5250_DEVICE: offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET; mask = EXYNOS_5250_USB_ISOL_OTG; break; case EXYNOS5250_HOST: offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET; mask = EXYNOS_5250_USB_ISOL_HOST; break; default: return; } regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask); } static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst) { struct samsung_usb2_phy_driver *drv = inst->drv; u32 ctrl0; u32 otg; u32 ehci; u32 ohci; u32 hsic; switch (inst->cfg->id) { case EXYNOS5250_DEVICE: regmap_update_bits(drv->reg_sys, EXYNOS_5250_MODE_SWITCH_OFFSET, EXYNOS_5250_MODE_SWITCH_MASK, EXYNOS_5250_MODE_SWITCH_DEVICE); /* OTG configuration */ otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS); /* The clock */ otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK; otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT; /* Reset */ otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND | EXYNOS_5250_USBOTGSYS_FORCE_SLEEP | EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG); otg |= EXYNOS_5250_USBOTGSYS_PHY_SW_RST | EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET | EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG | EXYNOS_5250_USBOTGSYS_OTGDISABLE; /* Ref clock */ otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK; otg |= EXYNOS_5250_REFCLKSEL_CLKCORE << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT; writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS); udelay(100); otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST | EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG | EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET | EXYNOS_5250_USBOTGSYS_OTGDISABLE); writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS); break; case EXYNOS5250_HOST: case EXYNOS5250_HSIC0: case EXYNOS5250_HSIC1: /* Host registers configuration */ ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0); /* The clock */ ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK; ctrl0 |= drv->ref_reg_val << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT; /* Reset */ ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST | EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL | EXYNOS_5250_HOSTPHYCTRL0_SIDDQ | EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND | EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP); ctrl0 |= EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST | EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST | EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N; writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0); udelay(10); ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST | EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST); writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0); /* OTG configuration */ otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS); /* The clock */ otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK; otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT; /* Reset */ otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND | EXYNOS_5250_USBOTGSYS_FORCE_SLEEP | EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG); otg |= EXYNOS_5250_USBOTGSYS_PHY_SW_RST | EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET | EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG | EXYNOS_5250_USBOTGSYS_OTGDISABLE; /* Ref clock */ otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK; otg |= EXYNOS_5250_REFCLKSEL_CLKCORE << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT; writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS); udelay(10); otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST | EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG | EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET); /* HSIC phy configuration */ hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 | EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT | EXYNOS_5250_HSICPHYCTRLX_PHYSWRST); writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1); writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2); udelay(10); hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST; writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1); writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2); /* The following delay is necessary for the reset sequence to be * completed */ udelay(80); /* Enable EHCI DMA burst */ ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL); ehci |= EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN | EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 | EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 | EXYNOS_5250_HOSTEHCICTRL_ENAINCR16; writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL); /* OHCI settings */ ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL); /* Following code is based on the old driver */ ohci |= 0x1 << 3; writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL); break; } exynos5250_isol(inst, 0); return 0; } static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst) { struct samsung_usb2_phy_driver *drv = inst->drv; u32 ctrl0; u32 otg; u32 hsic; exynos5250_isol(inst, 1); switch (inst->cfg->id) { case EXYNOS5250_DEVICE: otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS); otg |= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND | EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG | EXYNOS_5250_USBOTGSYS_FORCE_SLEEP); writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS); break; case EXYNOS5250_HOST: ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0); ctrl0 |= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ | EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND | EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP | EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST | EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL); writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0); break; case EXYNOS5250_HSIC0: case EXYNOS5250_HSIC1: hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 | EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT | EXYNOS_5250_HSICPHYCTRLX_SIDDQ | EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP | EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND ); writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1); writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2); break; } return 0; } static const struct samsung_usb2_common_phy exynos5250_phys[] = { { .label = "device", .id = EXYNOS5250_DEVICE, .power_on = exynos5250_power_on, .power_off = exynos5250_power_off, }, { .label = "host", .id = EXYNOS5250_HOST, .power_on = exynos5250_power_on, .power_off = exynos5250_power_off, }, { .label = "hsic0", .id = EXYNOS5250_HSIC0, .power_on = exynos5250_power_on, .power_off = exynos5250_power_off, }, { .label = "hsic1", .id = EXYNOS5250_HSIC1, .power_on = exynos5250_power_on, .power_off = exynos5250_power_off, }, }; const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = { .has_mode_switch = 1, .num_phys = EXYNOS5250_NUM_PHYS, .phys = exynos5250_phys, .rate_to_clk = exynos5250_rate_to_clk, };
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