Greg Kroah-Hartman | 5fd54ac | 2017-11-03 11:28:30 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 2 | /** |
| 3 | * core.c - DesignWare USB3 DRD Controller Core file |
| 4 | * |
| 5 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 6 | * |
| 7 | * Authors: Felipe Balbi <balbi@ti.com>, |
| 8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 9 | */ |
| 10 | |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 11 | #include <linux/clk.h> |
Felipe Balbi | fa0ea13 | 2014-09-19 15:51:11 -0500 | [diff] [blame] | 12 | #include <linux/version.h> |
Felipe Balbi | a72e658 | 2011-09-05 13:37:28 +0300 | [diff] [blame] | 13 | #include <linux/module.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 14 | #include <linux/kernel.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/spinlock.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/pm_runtime.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/ioport.h> |
| 21 | #include <linux/io.h> |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/dma-mapping.h> |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 25 | #include <linux/of.h> |
Heikki Krogerus | 404905a | 2014-09-25 10:57:02 +0300 | [diff] [blame] | 26 | #include <linux/acpi.h> |
Sekhar Nori | 6344475 | 2015-08-31 21:09:08 +0530 | [diff] [blame] | 27 | #include <linux/pinctrl/consumer.h> |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 28 | #include <linux/reset.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 29 | |
| 30 | #include <linux/usb/ch9.h> |
| 31 | #include <linux/usb/gadget.h> |
Felipe Balbi | f7e846f | 2013-06-30 14:29:51 +0300 | [diff] [blame] | 32 | #include <linux/usb/of.h> |
Ruchika Kharwar | a45c82b8 | 2013-07-06 07:52:49 -0500 | [diff] [blame] | 33 | #include <linux/usb/otg.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 34 | |
| 35 | #include "core.h" |
| 36 | #include "gadget.h" |
| 37 | #include "io.h" |
| 38 | |
| 39 | #include "debug.h" |
| 40 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 41 | #define DWC3_DEFAULT_AUTOSUSPEND_DELAY 5000 /* ms */ |
Felipe Balbi | 8300dd2 | 2011-10-18 13:54:01 +0300 | [diff] [blame] | 42 | |
Thinh Nguyen | 9d6173e | 2016-09-06 19:22:03 -0700 | [diff] [blame] | 43 | /** |
| 44 | * dwc3_get_dr_mode - Validates and sets dr_mode |
| 45 | * @dwc: pointer to our context structure |
| 46 | */ |
| 47 | static int dwc3_get_dr_mode(struct dwc3 *dwc) |
| 48 | { |
| 49 | enum usb_dr_mode mode; |
| 50 | struct device *dev = dwc->dev; |
| 51 | unsigned int hw_mode; |
| 52 | |
| 53 | if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) |
| 54 | dwc->dr_mode = USB_DR_MODE_OTG; |
| 55 | |
| 56 | mode = dwc->dr_mode; |
| 57 | hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0); |
| 58 | |
| 59 | switch (hw_mode) { |
| 60 | case DWC3_GHWPARAMS0_MODE_GADGET: |
| 61 | if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) { |
| 62 | dev_err(dev, |
| 63 | "Controller does not support host mode.\n"); |
| 64 | return -EINVAL; |
| 65 | } |
| 66 | mode = USB_DR_MODE_PERIPHERAL; |
| 67 | break; |
| 68 | case DWC3_GHWPARAMS0_MODE_HOST: |
| 69 | if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { |
| 70 | dev_err(dev, |
| 71 | "Controller does not support device mode.\n"); |
| 72 | return -EINVAL; |
| 73 | } |
| 74 | mode = USB_DR_MODE_HOST; |
| 75 | break; |
| 76 | default: |
| 77 | if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) |
| 78 | mode = USB_DR_MODE_HOST; |
| 79 | else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) |
| 80 | mode = USB_DR_MODE_PERIPHERAL; |
Thinh Nguyen | a770046 | 2018-07-26 13:52:11 -0700 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | * dwc_usb31 does not support OTG mode. If the controller |
| 84 | * supports DRD but the dr_mode is not specified or set to OTG, |
| 85 | * then set the mode to peripheral. |
| 86 | */ |
| 87 | if (mode == USB_DR_MODE_OTG && dwc3_is_usb31(dwc)) |
| 88 | mode = USB_DR_MODE_PERIPHERAL; |
Thinh Nguyen | 9d6173e | 2016-09-06 19:22:03 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | if (mode != dwc->dr_mode) { |
| 92 | dev_warn(dev, |
| 93 | "Configuration mismatch. dr_mode forced to %s\n", |
| 94 | mode == USB_DR_MODE_HOST ? "host" : "gadget"); |
| 95 | |
| 96 | dwc->dr_mode = mode; |
| 97 | } |
| 98 | |
| 99 | return 0; |
| 100 | } |
| 101 | |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 102 | void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) |
Sebastian Andrzej Siewior | 3140e8cb | 2011-10-31 22:25:40 +0100 | [diff] [blame] | 103 | { |
| 104 | u32 reg; |
| 105 | |
| 106 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); |
| 107 | reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); |
| 108 | reg |= DWC3_GCTL_PRTCAPDIR(mode); |
| 109 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 110 | |
| 111 | dwc->current_dr_role = mode; |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 112 | } |
Roger Quadros | 6b3261a | 2017-04-04 11:25:27 +0300 | [diff] [blame] | 113 | |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 114 | static void __dwc3_set_mode(struct work_struct *work) |
| 115 | { |
| 116 | struct dwc3 *dwc = work_to_dwc(work); |
| 117 | unsigned long flags; |
| 118 | int ret; |
| 119 | |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 120 | if (dwc->dr_mode != USB_DR_MODE_OTG) |
| 121 | return; |
| 122 | |
| 123 | if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_OTG) |
| 124 | dwc3_otg_update(dwc, 0); |
| 125 | |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 126 | if (!dwc->desired_dr_role) |
| 127 | return; |
| 128 | |
| 129 | if (dwc->desired_dr_role == dwc->current_dr_role) |
| 130 | return; |
| 131 | |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 132 | if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG && dwc->edev) |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 133 | return; |
| 134 | |
| 135 | switch (dwc->current_dr_role) { |
| 136 | case DWC3_GCTL_PRTCAP_HOST: |
| 137 | dwc3_host_exit(dwc); |
| 138 | break; |
| 139 | case DWC3_GCTL_PRTCAP_DEVICE: |
| 140 | dwc3_gadget_exit(dwc); |
| 141 | dwc3_event_buffers_cleanup(dwc); |
| 142 | break; |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 143 | case DWC3_GCTL_PRTCAP_OTG: |
| 144 | dwc3_otg_exit(dwc); |
| 145 | spin_lock_irqsave(&dwc->lock, flags); |
| 146 | dwc->desired_otg_role = DWC3_OTG_ROLE_IDLE; |
| 147 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 148 | dwc3_otg_update(dwc, 1); |
| 149 | break; |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 150 | default: |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | spin_lock_irqsave(&dwc->lock, flags); |
| 155 | |
| 156 | dwc3_set_prtcap(dwc, dwc->desired_dr_role); |
| 157 | |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 158 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 159 | |
| 160 | switch (dwc->desired_dr_role) { |
| 161 | case DWC3_GCTL_PRTCAP_HOST: |
| 162 | ret = dwc3_host_init(dwc); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 163 | if (ret) { |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 164 | dev_err(dwc->dev, "failed to initialize host\n"); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 165 | } else { |
| 166 | if (dwc->usb2_phy) |
| 167 | otg_set_vbus(dwc->usb2_phy->otg, true); |
Manu Gautam | 644cbbc | 2017-09-27 16:49:22 +0530 | [diff] [blame] | 168 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); |
| 169 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST); |
Vivek Gautam | d8c80bb | 2017-10-09 14:00:51 +0200 | [diff] [blame] | 170 | phy_calibrate(dwc->usb2_generic_phy); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 171 | } |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 172 | break; |
| 173 | case DWC3_GCTL_PRTCAP_DEVICE: |
| 174 | dwc3_event_buffers_setup(dwc); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 175 | |
| 176 | if (dwc->usb2_phy) |
| 177 | otg_set_vbus(dwc->usb2_phy->otg, false); |
Manu Gautam | 644cbbc | 2017-09-27 16:49:22 +0530 | [diff] [blame] | 178 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); |
| 179 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 180 | |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 181 | ret = dwc3_gadget_init(dwc); |
| 182 | if (ret) |
| 183 | dev_err(dwc->dev, "failed to initialize peripheral\n"); |
| 184 | break; |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 185 | case DWC3_GCTL_PRTCAP_OTG: |
| 186 | dwc3_otg_init(dwc); |
| 187 | dwc3_otg_update(dwc, 0); |
| 188 | break; |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 189 | default: |
| 190 | break; |
| 191 | } |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 192 | |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | void dwc3_set_mode(struct dwc3 *dwc, u32 mode) |
| 196 | { |
| 197 | unsigned long flags; |
| 198 | |
| 199 | spin_lock_irqsave(&dwc->lock, flags); |
| 200 | dwc->desired_dr_role = mode; |
| 201 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 202 | |
Roger Quadros | 084a804 | 2018-02-27 12:41:41 +0200 | [diff] [blame] | 203 | queue_work(system_freezable_wq, &dwc->drd_work); |
Sebastian Andrzej Siewior | 3140e8cb | 2011-10-31 22:25:40 +0100 | [diff] [blame] | 204 | } |
Felipe Balbi | 8300dd2 | 2011-10-18 13:54:01 +0300 | [diff] [blame] | 205 | |
Felipe Balbi | cf6d867 | 2016-04-14 15:03:39 +0300 | [diff] [blame] | 206 | u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type) |
| 207 | { |
| 208 | struct dwc3 *dwc = dep->dwc; |
| 209 | u32 reg; |
| 210 | |
| 211 | dwc3_writel(dwc->regs, DWC3_GDBGFIFOSPACE, |
| 212 | DWC3_GDBGFIFOSPACE_NUM(dep->number) | |
| 213 | DWC3_GDBGFIFOSPACE_TYPE(type)); |
| 214 | |
| 215 | reg = dwc3_readl(dwc->regs, DWC3_GDBGFIFOSPACE); |
| 216 | |
| 217 | return DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(reg); |
| 218 | } |
| 219 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 220 | /** |
| 221 | * dwc3_core_soft_reset - Issues core soft reset and PHY reset |
| 222 | * @dwc: pointer to our context structure |
| 223 | */ |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 224 | static int dwc3_core_soft_reset(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 225 | { |
| 226 | u32 reg; |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 227 | int retries = 1000; |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 228 | int ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 229 | |
Felipe Balbi | 51e1e7b | 2012-07-19 14:09:48 +0300 | [diff] [blame] | 230 | usb_phy_init(dwc->usb2_phy); |
| 231 | usb_phy_init(dwc->usb3_phy); |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 232 | ret = phy_init(dwc->usb2_generic_phy); |
| 233 | if (ret < 0) |
| 234 | return ret; |
| 235 | |
| 236 | ret = phy_init(dwc->usb3_generic_phy); |
| 237 | if (ret < 0) { |
| 238 | phy_exit(dwc->usb2_generic_phy); |
| 239 | return ret; |
| 240 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 241 | |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 242 | /* |
| 243 | * We're resetting only the device side because, if we're in host mode, |
| 244 | * XHCI driver will reset the host block. If dwc3 was configured for |
| 245 | * host-only mode, then we can return early. |
| 246 | */ |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 247 | if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST) |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 248 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 249 | |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 250 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 251 | reg |= DWC3_DCTL_CSFTRST; |
| 252 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 253 | |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 254 | do { |
| 255 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 256 | if (!(reg & DWC3_DCTL_CSFTRST)) |
Thinh Nguyen | fab3833 | 2018-03-16 15:33:48 -0700 | [diff] [blame] | 257 | goto done; |
Pratyush Anand | 45627ac | 2012-06-21 17:44:28 +0530 | [diff] [blame] | 258 | |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 259 | udelay(1); |
| 260 | } while (--retries); |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 261 | |
Brian Norris | 00b4217 | 2018-01-17 13:22:49 -0800 | [diff] [blame] | 262 | phy_exit(dwc->usb3_generic_phy); |
| 263 | phy_exit(dwc->usb2_generic_phy); |
| 264 | |
Felipe Balbi | f59dcab | 2016-03-11 10:51:52 +0200 | [diff] [blame] | 265 | return -ETIMEDOUT; |
Thinh Nguyen | fab3833 | 2018-03-16 15:33:48 -0700 | [diff] [blame] | 266 | |
| 267 | done: |
| 268 | /* |
| 269 | * For DWC_usb31 controller, once DWC3_DCTL_CSFTRST bit is cleared, |
| 270 | * we must wait at least 50ms before accessing the PHY domain |
| 271 | * (synchronization delay). DWC_usb31 programming guide section 1.3.2. |
| 272 | */ |
| 273 | if (dwc3_is_usb31(dwc)) |
| 274 | msleep(50); |
| 275 | |
| 276 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 277 | } |
| 278 | |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 279 | static const struct clk_bulk_data dwc3_core_clks[] = { |
| 280 | { .id = "ref" }, |
| 281 | { .id = "bus_early" }, |
| 282 | { .id = "suspend" }, |
| 283 | }; |
| 284 | |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 285 | /* |
| 286 | * dwc3_frame_length_adjustment - Adjusts frame length if required |
| 287 | * @dwc3: Pointer to our controller context structure |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 288 | */ |
Felipe Balbi | bcdb327 | 2016-05-16 10:42:23 +0300 | [diff] [blame] | 289 | static void dwc3_frame_length_adjustment(struct dwc3 *dwc) |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 290 | { |
| 291 | u32 reg; |
| 292 | u32 dft; |
| 293 | |
| 294 | if (dwc->revision < DWC3_REVISION_250A) |
| 295 | return; |
| 296 | |
Felipe Balbi | bcdb327 | 2016-05-16 10:42:23 +0300 | [diff] [blame] | 297 | if (dwc->fladj == 0) |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 298 | return; |
| 299 | |
| 300 | reg = dwc3_readl(dwc->regs, DWC3_GFLADJ); |
| 301 | dft = reg & DWC3_GFLADJ_30MHZ_MASK; |
Felipe Balbi | bcdb327 | 2016-05-16 10:42:23 +0300 | [diff] [blame] | 302 | if (!dev_WARN_ONCE(dwc->dev, dft == dwc->fladj, |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 303 | "request value same as default, ignoring\n")) { |
| 304 | reg &= ~DWC3_GFLADJ_30MHZ_MASK; |
Felipe Balbi | bcdb327 | 2016-05-16 10:42:23 +0300 | [diff] [blame] | 305 | reg |= DWC3_GFLADJ_30MHZ_SDBND_SEL | dwc->fladj; |
Nikhil Badola | db2be4e | 2015-09-04 10:15:58 +0530 | [diff] [blame] | 306 | dwc3_writel(dwc->regs, DWC3_GFLADJ, reg); |
| 307 | } |
| 308 | } |
| 309 | |
Heikki Krogerus | c5cc74e | 2015-05-13 15:26:47 +0300 | [diff] [blame] | 310 | /** |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 311 | * dwc3_free_one_event_buffer - Frees one event buffer |
| 312 | * @dwc: Pointer to our controller context structure |
| 313 | * @evt: Pointer to event buffer to be freed |
| 314 | */ |
| 315 | static void dwc3_free_one_event_buffer(struct dwc3 *dwc, |
| 316 | struct dwc3_event_buffer *evt) |
| 317 | { |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 318 | dma_free_coherent(dwc->sysdev, evt->length, evt->buf, evt->dma); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 319 | } |
| 320 | |
| 321 | /** |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 322 | * dwc3_alloc_one_event_buffer - Allocates one event buffer structure |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 323 | * @dwc: Pointer to our controller context structure |
| 324 | * @length: size of the event buffer |
| 325 | * |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 326 | * Returns a pointer to the allocated event buffer structure on success |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 327 | * otherwise ERR_PTR(errno). |
| 328 | */ |
Felipe Balbi | 67d0b50 | 2013-02-22 16:31:07 +0200 | [diff] [blame] | 329 | static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, |
| 330 | unsigned length) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 331 | { |
| 332 | struct dwc3_event_buffer *evt; |
| 333 | |
Felipe Balbi | 380f0d2 | 2012-10-11 13:48:36 +0300 | [diff] [blame] | 334 | evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 335 | if (!evt) |
| 336 | return ERR_PTR(-ENOMEM); |
| 337 | |
| 338 | evt->dwc = dwc; |
| 339 | evt->length = length; |
John Youn | d9fa4c6 | 2016-11-15 12:54:15 +0200 | [diff] [blame] | 340 | evt->cache = devm_kzalloc(dwc->dev, length, GFP_KERNEL); |
| 341 | if (!evt->cache) |
| 342 | return ERR_PTR(-ENOMEM); |
| 343 | |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 344 | evt->buf = dma_alloc_coherent(dwc->sysdev, length, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 345 | &evt->dma, GFP_KERNEL); |
Felipe Balbi | e32672f | 2012-11-08 15:26:41 +0200 | [diff] [blame] | 346 | if (!evt->buf) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 347 | return ERR_PTR(-ENOMEM); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 348 | |
| 349 | return evt; |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * dwc3_free_event_buffers - frees all allocated event buffers |
| 354 | * @dwc: Pointer to our controller context structure |
| 355 | */ |
| 356 | static void dwc3_free_event_buffers(struct dwc3 *dwc) |
| 357 | { |
| 358 | struct dwc3_event_buffer *evt; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 359 | |
Felipe Balbi | 696c8b1 | 2016-03-30 09:37:03 +0300 | [diff] [blame] | 360 | evt = dwc->ev_buf; |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 361 | if (evt) |
| 362 | dwc3_free_one_event_buffer(dwc, evt); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | /** |
| 366 | * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 367 | * @dwc: pointer to our controller context structure |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 368 | * @length: size of event buffer |
| 369 | * |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 370 | * Returns 0 on success otherwise negative errno. In the error case, dwc |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 371 | * may contain some buffers allocated but not all which were requested. |
| 372 | */ |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 373 | static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 374 | { |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 375 | struct dwc3_event_buffer *evt; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 376 | |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 377 | evt = dwc3_alloc_one_event_buffer(dwc, length); |
| 378 | if (IS_ERR(evt)) { |
| 379 | dev_err(dwc->dev, "can't allocate event buffer\n"); |
| 380 | return PTR_ERR(evt); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 381 | } |
Felipe Balbi | 696c8b1 | 2016-03-30 09:37:03 +0300 | [diff] [blame] | 382 | dwc->ev_buf = evt; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * dwc3_event_buffers_setup - setup our allocated event buffers |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 389 | * @dwc: pointer to our controller context structure |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 390 | * |
| 391 | * Returns 0 on success otherwise negative errno. |
| 392 | */ |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 393 | int dwc3_event_buffers_setup(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 394 | { |
| 395 | struct dwc3_event_buffer *evt; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 396 | |
Felipe Balbi | 696c8b1 | 2016-03-30 09:37:03 +0300 | [diff] [blame] | 397 | evt = dwc->ev_buf; |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 398 | evt->lpos = 0; |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 399 | dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(0), |
| 400 | lower_32_bits(evt->dma)); |
| 401 | dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(0), |
| 402 | upper_32_bits(evt->dma)); |
| 403 | dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), |
| 404 | DWC3_GEVNTSIZ_SIZE(evt->length)); |
| 405 | dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 410 | void dwc3_event_buffers_cleanup(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 411 | { |
| 412 | struct dwc3_event_buffer *evt; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 413 | |
Felipe Balbi | 696c8b1 | 2016-03-30 09:37:03 +0300 | [diff] [blame] | 414 | evt = dwc->ev_buf; |
Paul Zimmerman | 7acd85e | 2012-04-27 14:28:02 +0300 | [diff] [blame] | 415 | |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 416 | evt->lpos = 0; |
Paul Zimmerman | 7acd85e | 2012-04-27 14:28:02 +0300 | [diff] [blame] | 417 | |
Felipe Balbi | 660e9bd | 2016-03-30 09:26:24 +0300 | [diff] [blame] | 418 | dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(0), 0); |
| 419 | dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(0), 0); |
| 420 | dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), DWC3_GEVNTSIZ_INTMASK |
| 421 | | DWC3_GEVNTSIZ_SIZE(0)); |
| 422 | dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 423 | } |
| 424 | |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 425 | static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc) |
| 426 | { |
| 427 | if (!dwc->has_hibernation) |
| 428 | return 0; |
| 429 | |
| 430 | if (!dwc->nr_scratch) |
| 431 | return 0; |
| 432 | |
| 433 | dwc->scratchbuf = kmalloc_array(dwc->nr_scratch, |
| 434 | DWC3_SCRATCHBUF_SIZE, GFP_KERNEL); |
| 435 | if (!dwc->scratchbuf) |
| 436 | return -ENOMEM; |
| 437 | |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | static int dwc3_setup_scratch_buffers(struct dwc3 *dwc) |
| 442 | { |
| 443 | dma_addr_t scratch_addr; |
| 444 | u32 param; |
| 445 | int ret; |
| 446 | |
| 447 | if (!dwc->has_hibernation) |
| 448 | return 0; |
| 449 | |
| 450 | if (!dwc->nr_scratch) |
| 451 | return 0; |
| 452 | |
| 453 | /* should never fall here */ |
| 454 | if (!WARN_ON(dwc->scratchbuf)) |
| 455 | return 0; |
| 456 | |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 457 | scratch_addr = dma_map_single(dwc->sysdev, dwc->scratchbuf, |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 458 | dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE, |
| 459 | DMA_BIDIRECTIONAL); |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 460 | if (dma_mapping_error(dwc->sysdev, scratch_addr)) { |
| 461 | dev_err(dwc->sysdev, "failed to map scratch buffer\n"); |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 462 | ret = -EFAULT; |
| 463 | goto err0; |
| 464 | } |
| 465 | |
| 466 | dwc->scratch_addr = scratch_addr; |
| 467 | |
| 468 | param = lower_32_bits(scratch_addr); |
| 469 | |
| 470 | ret = dwc3_send_gadget_generic_command(dwc, |
| 471 | DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param); |
| 472 | if (ret < 0) |
| 473 | goto err1; |
| 474 | |
| 475 | param = upper_32_bits(scratch_addr); |
| 476 | |
| 477 | ret = dwc3_send_gadget_generic_command(dwc, |
| 478 | DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param); |
| 479 | if (ret < 0) |
| 480 | goto err1; |
| 481 | |
| 482 | return 0; |
| 483 | |
| 484 | err1: |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 485 | dma_unmap_single(dwc->sysdev, dwc->scratch_addr, dwc->nr_scratch * |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 486 | DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); |
| 487 | |
| 488 | err0: |
| 489 | return ret; |
| 490 | } |
| 491 | |
| 492 | static void dwc3_free_scratch_buffers(struct dwc3 *dwc) |
| 493 | { |
| 494 | if (!dwc->has_hibernation) |
| 495 | return; |
| 496 | |
| 497 | if (!dwc->nr_scratch) |
| 498 | return; |
| 499 | |
| 500 | /* should never fall here */ |
| 501 | if (!WARN_ON(dwc->scratchbuf)) |
| 502 | return; |
| 503 | |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 504 | dma_unmap_single(dwc->sysdev, dwc->scratch_addr, dwc->nr_scratch * |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 505 | DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); |
| 506 | kfree(dwc->scratchbuf); |
| 507 | } |
| 508 | |
Felipe Balbi | 789451f6 | 2011-05-05 15:53:10 +0300 | [diff] [blame] | 509 | static void dwc3_core_num_eps(struct dwc3 *dwc) |
| 510 | { |
| 511 | struct dwc3_hwparams *parms = &dwc->hwparams; |
| 512 | |
Bryan O'Donoghue | 47d3946 | 2017-01-31 20:58:10 +0000 | [diff] [blame] | 513 | dwc->num_eps = DWC3_NUM_EPS(parms); |
Felipe Balbi | 789451f6 | 2011-05-05 15:53:10 +0300 | [diff] [blame] | 514 | } |
| 515 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 516 | static void dwc3_cache_hwparams(struct dwc3 *dwc) |
Felipe Balbi | 26ceca9 | 2011-09-30 10:58:49 +0300 | [diff] [blame] | 517 | { |
| 518 | struct dwc3_hwparams *parms = &dwc->hwparams; |
| 519 | |
| 520 | parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0); |
| 521 | parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1); |
| 522 | parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2); |
| 523 | parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3); |
| 524 | parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4); |
| 525 | parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5); |
| 526 | parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6); |
| 527 | parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7); |
| 528 | parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8); |
| 529 | } |
| 530 | |
Roger Quadros | 9811204 | 2018-02-12 15:30:08 +0200 | [diff] [blame] | 531 | static int dwc3_core_ulpi_init(struct dwc3 *dwc) |
| 532 | { |
| 533 | int intf; |
| 534 | int ret = 0; |
| 535 | |
| 536 | intf = DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3); |
| 537 | |
| 538 | if (intf == DWC3_GHWPARAMS3_HSPHY_IFC_ULPI || |
| 539 | (intf == DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI && |
| 540 | dwc->hsphy_interface && |
| 541 | !strncmp(dwc->hsphy_interface, "ulpi", 4))) |
| 542 | ret = dwc3_ulpi_init(dwc); |
| 543 | |
| 544 | return ret; |
| 545 | } |
| 546 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 547 | /** |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 548 | * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core |
| 549 | * @dwc: Pointer to our controller context structure |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 550 | * |
| 551 | * Returns 0 on success. The USB PHY interfaces are configured but not |
| 552 | * initialized. The PHY interfaces and the PHYs get initialized together with |
| 553 | * the core in dwc3_core_init. |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 554 | */ |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 555 | static int dwc3_phy_setup(struct dwc3 *dwc) |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 556 | { |
| 557 | u32 reg; |
| 558 | |
| 559 | reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); |
| 560 | |
Huang Rui | 2164a47 | 2014-10-28 19:54:35 +0800 | [diff] [blame] | 561 | /* |
Felipe Balbi | 1966b86 | 2016-08-03 14:16:15 +0300 | [diff] [blame] | 562 | * Make sure UX_EXIT_PX is cleared as that causes issues with some |
| 563 | * PHYs. Also, this bit is not supposed to be used in normal operation. |
| 564 | */ |
| 565 | reg &= ~DWC3_GUSB3PIPECTL_UX_EXIT_PX; |
| 566 | |
| 567 | /* |
Huang Rui | 2164a47 | 2014-10-28 19:54:35 +0800 | [diff] [blame] | 568 | * Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY |
| 569 | * to '0' during coreConsultant configuration. So default value |
| 570 | * will be '0' when the core is reset. Application needs to set it |
| 571 | * to '1' after the core initialization is completed. |
| 572 | */ |
| 573 | if (dwc->revision > DWC3_REVISION_194A) |
| 574 | reg |= DWC3_GUSB3PIPECTL_SUSPHY; |
| 575 | |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 576 | if (dwc->u2ss_inp3_quirk) |
| 577 | reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK; |
| 578 | |
Rajesh Bhagat | e58dd35 | 2016-03-14 14:40:50 +0530 | [diff] [blame] | 579 | if (dwc->dis_rxdet_inp3_quirk) |
| 580 | reg |= DWC3_GUSB3PIPECTL_DISRXDETINP3; |
| 581 | |
Huang Rui | df31f5b | 2014-10-28 19:54:29 +0800 | [diff] [blame] | 582 | if (dwc->req_p1p2p3_quirk) |
| 583 | reg |= DWC3_GUSB3PIPECTL_REQP1P2P3; |
| 584 | |
Huang Rui | a2a1d0f | 2014-10-28 19:54:30 +0800 | [diff] [blame] | 585 | if (dwc->del_p1p2p3_quirk) |
| 586 | reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN; |
| 587 | |
Huang Rui | 41c06ff | 2014-10-28 19:54:31 +0800 | [diff] [blame] | 588 | if (dwc->del_phy_power_chg_quirk) |
| 589 | reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE; |
| 590 | |
Huang Rui | fb67afc | 2014-10-28 19:54:32 +0800 | [diff] [blame] | 591 | if (dwc->lfps_filter_quirk) |
| 592 | reg |= DWC3_GUSB3PIPECTL_LFPSFILT; |
| 593 | |
Huang Rui | 14f4ac5 | 2014-10-28 19:54:33 +0800 | [diff] [blame] | 594 | if (dwc->rx_detect_poll_quirk) |
| 595 | reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL; |
| 596 | |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 597 | if (dwc->tx_de_emphasis_quirk) |
| 598 | reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(dwc->tx_de_emphasis); |
| 599 | |
Felipe Balbi | cd72f89 | 2014-11-06 11:31:00 -0600 | [diff] [blame] | 600 | if (dwc->dis_u3_susphy_quirk) |
Huang Rui | 59acfa2 | 2014-10-31 11:11:13 +0800 | [diff] [blame] | 601 | reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; |
| 602 | |
William Wu | 00fe081 | 2016-08-16 22:44:39 +0800 | [diff] [blame] | 603 | if (dwc->dis_del_phy_power_chg_quirk) |
| 604 | reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE; |
| 605 | |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 606 | dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); |
| 607 | |
Huang Rui | 2164a47 | 2014-10-28 19:54:35 +0800 | [diff] [blame] | 608 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); |
| 609 | |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 610 | /* Select the HS PHY interface */ |
| 611 | switch (DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3)) { |
| 612 | case DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI: |
Felipe Balbi | 43cacb0 | 2015-07-01 22:03:09 -0500 | [diff] [blame] | 613 | if (dwc->hsphy_interface && |
| 614 | !strncmp(dwc->hsphy_interface, "utmi", 4)) { |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 615 | reg &= ~DWC3_GUSB2PHYCFG_ULPI_UTMI; |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 616 | break; |
Felipe Balbi | 43cacb0 | 2015-07-01 22:03:09 -0500 | [diff] [blame] | 617 | } else if (dwc->hsphy_interface && |
| 618 | !strncmp(dwc->hsphy_interface, "ulpi", 4)) { |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 619 | reg |= DWC3_GUSB2PHYCFG_ULPI_UTMI; |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 620 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 621 | } else { |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 622 | /* Relying on default value. */ |
| 623 | if (!(reg & DWC3_GUSB2PHYCFG_ULPI_UTMI)) |
| 624 | break; |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 625 | } |
| 626 | /* FALLTHROUGH */ |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 627 | case DWC3_GHWPARAMS3_HSPHY_IFC_ULPI: |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 628 | /* FALLTHROUGH */ |
Heikki Krogerus | 3e10a2c | 2015-05-13 15:26:49 +0300 | [diff] [blame] | 629 | default: |
| 630 | break; |
| 631 | } |
| 632 | |
William Wu | 32f2ed8 | 2016-08-16 22:44:38 +0800 | [diff] [blame] | 633 | switch (dwc->hsphy_mode) { |
| 634 | case USBPHY_INTERFACE_MODE_UTMI: |
| 635 | reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | |
| 636 | DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); |
| 637 | reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_8_BIT) | |
| 638 | DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_8_BIT); |
| 639 | break; |
| 640 | case USBPHY_INTERFACE_MODE_UTMIW: |
| 641 | reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | |
| 642 | DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); |
| 643 | reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_16_BIT) | |
| 644 | DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_16_BIT); |
| 645 | break; |
| 646 | default: |
| 647 | break; |
| 648 | } |
| 649 | |
Huang Rui | 2164a47 | 2014-10-28 19:54:35 +0800 | [diff] [blame] | 650 | /* |
| 651 | * Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to |
| 652 | * '0' during coreConsultant configuration. So default value will |
| 653 | * be '0' when the core is reset. Application needs to set it to |
| 654 | * '1' after the core initialization is completed. |
| 655 | */ |
| 656 | if (dwc->revision > DWC3_REVISION_194A) |
| 657 | reg |= DWC3_GUSB2PHYCFG_SUSPHY; |
| 658 | |
Felipe Balbi | cd72f89 | 2014-11-06 11:31:00 -0600 | [diff] [blame] | 659 | if (dwc->dis_u2_susphy_quirk) |
Huang Rui | 0effe0a | 2014-10-31 11:11:14 +0800 | [diff] [blame] | 660 | reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; |
| 661 | |
John Youn | ec791d1 | 2015-10-02 20:30:57 -0700 | [diff] [blame] | 662 | if (dwc->dis_enblslpm_quirk) |
| 663 | reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; |
| 664 | |
William Wu | 16199f3 | 2016-08-16 22:44:37 +0800 | [diff] [blame] | 665 | if (dwc->dis_u2_freeclk_exists_quirk) |
| 666 | reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; |
| 667 | |
Huang Rui | 2164a47 | 2014-10-28 19:54:35 +0800 | [diff] [blame] | 668 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 669 | |
| 670 | return 0; |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 671 | } |
| 672 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 673 | static void dwc3_core_exit(struct dwc3 *dwc) |
| 674 | { |
| 675 | dwc3_event_buffers_cleanup(dwc); |
| 676 | |
| 677 | usb_phy_shutdown(dwc->usb2_phy); |
| 678 | usb_phy_shutdown(dwc->usb3_phy); |
| 679 | phy_exit(dwc->usb2_generic_phy); |
| 680 | phy_exit(dwc->usb3_generic_phy); |
| 681 | |
| 682 | usb_phy_set_suspend(dwc->usb2_phy, 1); |
| 683 | usb_phy_set_suspend(dwc->usb3_phy, 1); |
| 684 | phy_power_off(dwc->usb2_generic_phy); |
| 685 | phy_power_off(dwc->usb3_generic_phy); |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 686 | clk_bulk_disable(dwc->num_clks, dwc->clks); |
| 687 | clk_bulk_unprepare(dwc->num_clks, dwc->clks); |
| 688 | reset_control_assert(dwc->reset); |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 689 | } |
| 690 | |
Felipe Balbi | 0759956 | 2016-10-14 16:19:01 +0300 | [diff] [blame] | 691 | static bool dwc3_core_is_valid(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 692 | { |
Felipe Balbi | 0759956 | 2016-10-14 16:19:01 +0300 | [diff] [blame] | 693 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 694 | |
Sebastian Andrzej Siewior | 7650bd7 | 2011-08-29 13:56:36 +0200 | [diff] [blame] | 695 | reg = dwc3_readl(dwc->regs, DWC3_GSNPSID); |
Felipe Balbi | 0759956 | 2016-10-14 16:19:01 +0300 | [diff] [blame] | 696 | |
Sebastian Andrzej Siewior | 7650bd7 | 2011-08-29 13:56:36 +0200 | [diff] [blame] | 697 | /* This should read as U3 followed by revision number */ |
John Youn | 690fb37 | 2015-09-04 19:15:10 -0700 | [diff] [blame] | 698 | if ((reg & DWC3_GSNPSID_MASK) == 0x55330000) { |
| 699 | /* Detected DWC_usb3 IP */ |
| 700 | dwc->revision = reg; |
| 701 | } else if ((reg & DWC3_GSNPSID_MASK) == 0x33310000) { |
| 702 | /* Detected DWC_usb31 IP */ |
| 703 | dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER); |
| 704 | dwc->revision |= DWC3_REVISION_IS_DWC31; |
| 705 | } else { |
Felipe Balbi | 0759956 | 2016-10-14 16:19:01 +0300 | [diff] [blame] | 706 | return false; |
Sebastian Andrzej Siewior | 7650bd7 | 2011-08-29 13:56:36 +0200 | [diff] [blame] | 707 | } |
Sebastian Andrzej Siewior | 7650bd7 | 2011-08-29 13:56:36 +0200 | [diff] [blame] | 708 | |
Felipe Balbi | 0759956 | 2016-10-14 16:19:01 +0300 | [diff] [blame] | 709 | return true; |
| 710 | } |
Felipe Balbi | fa0ea13 | 2014-09-19 15:51:11 -0500 | [diff] [blame] | 711 | |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 712 | static void dwc3_core_setup_global_control(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 713 | { |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 714 | u32 hwparams4 = dwc->hwparams.hwparams4; |
| 715 | u32 reg; |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 716 | |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 717 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); |
Paul Zimmerman | 3e87c42 | 2012-02-24 17:32:13 -0800 | [diff] [blame] | 718 | reg &= ~DWC3_GCTL_SCALEDOWN_MASK; |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 719 | |
Sebastian Andrzej Siewior | 164d773 | 2011-11-24 11:22:05 +0100 | [diff] [blame] | 720 | switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) { |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 721 | case DWC3_GHWPARAMS1_EN_PWROPT_CLK: |
Felipe Balbi | 32a4a13 | 2014-02-25 14:00:13 -0600 | [diff] [blame] | 722 | /** |
| 723 | * WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an |
| 724 | * issue which would cause xHCI compliance tests to fail. |
| 725 | * |
| 726 | * Because of that we cannot enable clock gating on such |
| 727 | * configurations. |
| 728 | * |
| 729 | * Refers to: |
| 730 | * |
| 731 | * STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based |
| 732 | * SOF/ITP Mode Used |
| 733 | */ |
| 734 | if ((dwc->dr_mode == USB_DR_MODE_HOST || |
| 735 | dwc->dr_mode == USB_DR_MODE_OTG) && |
| 736 | (dwc->revision >= DWC3_REVISION_210A && |
| 737 | dwc->revision <= DWC3_REVISION_250A)) |
| 738 | reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC; |
| 739 | else |
| 740 | reg &= ~DWC3_GCTL_DSBLCLKGTNG; |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 741 | break; |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 742 | case DWC3_GHWPARAMS1_EN_PWROPT_HIB: |
| 743 | /* enable hibernation here */ |
| 744 | dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4); |
Huang Rui | 2eac399 | 2014-10-28 19:54:22 +0800 | [diff] [blame] | 745 | |
| 746 | /* |
| 747 | * REVISIT Enabling this bit so that host-mode hibernation |
| 748 | * will work. Device-mode hibernation is not yet implemented. |
| 749 | */ |
| 750 | reg |= DWC3_GCTL_GBLHIBERNATIONEN; |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 751 | break; |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 752 | default: |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 753 | /* nothing */ |
| 754 | break; |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 755 | } |
| 756 | |
Huang Rui | 946bd57 | 2014-10-28 19:54:23 +0800 | [diff] [blame] | 757 | /* check if current dwc3 is on simulation board */ |
| 758 | if (dwc->hwparams.hwparams6 & DWC3_GHWPARAMS6_EN_FPGA) { |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 759 | dev_info(dwc->dev, "Running with FPGA optmizations\n"); |
Huang Rui | 946bd57 | 2014-10-28 19:54:23 +0800 | [diff] [blame] | 760 | dwc->is_fpga = true; |
| 761 | } |
| 762 | |
Huang Rui | 3b81221 | 2014-10-28 19:54:25 +0800 | [diff] [blame] | 763 | WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga, |
| 764 | "disable_scramble cannot be used on non-FPGA builds\n"); |
| 765 | |
| 766 | if (dwc->disable_scramble_quirk && dwc->is_fpga) |
| 767 | reg |= DWC3_GCTL_DISSCRAMBLE; |
| 768 | else |
| 769 | reg &= ~DWC3_GCTL_DISSCRAMBLE; |
| 770 | |
Huang Rui | 9a5b2f3 | 2014-10-28 19:54:27 +0800 | [diff] [blame] | 771 | if (dwc->u2exit_lfps_quirk) |
| 772 | reg |= DWC3_GCTL_U2EXIT_LFPS; |
| 773 | |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 774 | /* |
| 775 | * WORKAROUND: DWC3 revisions <1.90a have a bug |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 776 | * where the device can fail to connect at SuperSpeed |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 777 | * and falls back to high-speed mode which causes |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 778 | * the device to enter a Connect/Disconnect loop |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 779 | */ |
| 780 | if (dwc->revision < DWC3_REVISION_190A) |
| 781 | reg |= DWC3_GCTL_U2RSTECN; |
| 782 | |
| 783 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 784 | } |
Sebastian Andrzej Siewior | 4878a02 | 2011-10-31 22:25:41 +0100 | [diff] [blame] | 785 | |
Felipe Balbi | f54edb5 | 2017-06-05 17:03:18 +0300 | [diff] [blame] | 786 | static int dwc3_core_get_phy(struct dwc3 *dwc); |
Roger Quadros | 9811204 | 2018-02-12 15:30:08 +0200 | [diff] [blame] | 787 | static int dwc3_core_ulpi_init(struct dwc3 *dwc); |
Felipe Balbi | f54edb5 | 2017-06-05 17:03:18 +0300 | [diff] [blame] | 788 | |
Pengbo Mu | d9612c2 | 2018-07-23 18:32:37 +0800 | [diff] [blame] | 789 | /* set global incr burst type configuration registers */ |
| 790 | static void dwc3_set_incr_burst_type(struct dwc3 *dwc) |
| 791 | { |
| 792 | struct device *dev = dwc->dev; |
| 793 | /* incrx_mode : for INCR burst type. */ |
| 794 | bool incrx_mode; |
| 795 | /* incrx_size : for size of INCRX burst. */ |
| 796 | u32 incrx_size; |
| 797 | u32 *vals; |
| 798 | u32 cfg; |
| 799 | int ntype; |
| 800 | int ret; |
| 801 | int i; |
| 802 | |
| 803 | cfg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0); |
| 804 | |
| 805 | /* |
| 806 | * Handle property "snps,incr-burst-type-adjustment". |
| 807 | * Get the number of value from this property: |
| 808 | * result <= 0, means this property is not supported. |
| 809 | * result = 1, means INCRx burst mode supported. |
| 810 | * result > 1, means undefined length burst mode supported. |
| 811 | */ |
| 812 | ntype = device_property_read_u32_array(dev, |
| 813 | "snps,incr-burst-type-adjustment", NULL, 0); |
| 814 | if (ntype <= 0) |
| 815 | return; |
| 816 | |
| 817 | vals = kcalloc(ntype, sizeof(u32), GFP_KERNEL); |
| 818 | if (!vals) { |
| 819 | dev_err(dev, "Error to get memory\n"); |
| 820 | return; |
| 821 | } |
| 822 | |
| 823 | /* Get INCR burst type, and parse it */ |
| 824 | ret = device_property_read_u32_array(dev, |
| 825 | "snps,incr-burst-type-adjustment", vals, ntype); |
| 826 | if (ret) { |
| 827 | dev_err(dev, "Error to get property\n"); |
| 828 | return; |
| 829 | } |
| 830 | |
| 831 | incrx_size = *vals; |
| 832 | |
| 833 | if (ntype > 1) { |
| 834 | /* INCRX (undefined length) burst mode */ |
| 835 | incrx_mode = INCRX_UNDEF_LENGTH_BURST_MODE; |
| 836 | for (i = 1; i < ntype; i++) { |
| 837 | if (vals[i] > incrx_size) |
| 838 | incrx_size = vals[i]; |
| 839 | } |
| 840 | } else { |
| 841 | /* INCRX burst mode */ |
| 842 | incrx_mode = INCRX_BURST_MODE; |
| 843 | } |
| 844 | |
| 845 | /* Enable Undefined Length INCR Burst and Enable INCRx Burst */ |
| 846 | cfg &= ~DWC3_GSBUSCFG0_INCRBRST_MASK; |
| 847 | if (incrx_mode) |
| 848 | cfg |= DWC3_GSBUSCFG0_INCRBRSTENA; |
| 849 | switch (incrx_size) { |
| 850 | case 256: |
| 851 | cfg |= DWC3_GSBUSCFG0_INCR256BRSTENA; |
| 852 | break; |
| 853 | case 128: |
| 854 | cfg |= DWC3_GSBUSCFG0_INCR128BRSTENA; |
| 855 | break; |
| 856 | case 64: |
| 857 | cfg |= DWC3_GSBUSCFG0_INCR64BRSTENA; |
| 858 | break; |
| 859 | case 32: |
| 860 | cfg |= DWC3_GSBUSCFG0_INCR32BRSTENA; |
| 861 | break; |
| 862 | case 16: |
| 863 | cfg |= DWC3_GSBUSCFG0_INCR16BRSTENA; |
| 864 | break; |
| 865 | case 8: |
| 866 | cfg |= DWC3_GSBUSCFG0_INCR8BRSTENA; |
| 867 | break; |
| 868 | case 4: |
| 869 | cfg |= DWC3_GSBUSCFG0_INCR4BRSTENA; |
| 870 | break; |
| 871 | case 1: |
| 872 | break; |
| 873 | default: |
| 874 | dev_err(dev, "Invalid property\n"); |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, cfg); |
| 879 | } |
| 880 | |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 881 | /** |
| 882 | * dwc3_core_init - Low-level initialization of DWC3 Core |
| 883 | * @dwc: Pointer to our controller context structure |
| 884 | * |
| 885 | * Returns 0 on success otherwise negative errno. |
| 886 | */ |
| 887 | static int dwc3_core_init(struct dwc3 *dwc) |
| 888 | { |
| 889 | u32 reg; |
| 890 | int ret; |
| 891 | |
| 892 | if (!dwc3_core_is_valid(dwc)) { |
| 893 | dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); |
| 894 | ret = -ENODEV; |
| 895 | goto err0; |
| 896 | } |
| 897 | |
| 898 | /* |
| 899 | * Write Linux Version Code to our GUID register so it's easy to figure |
| 900 | * out which kernel version a bug was found. |
| 901 | */ |
| 902 | dwc3_writel(dwc->regs, DWC3_GUID, LINUX_VERSION_CODE); |
| 903 | |
| 904 | /* Handle USB2.0-only core configuration */ |
| 905 | if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) == |
| 906 | DWC3_GHWPARAMS3_SSPHY_IFC_DIS) { |
| 907 | if (dwc->maximum_speed == USB_SPEED_SUPER) |
| 908 | dwc->maximum_speed = USB_SPEED_HIGH; |
| 909 | } |
| 910 | |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 911 | ret = dwc3_phy_setup(dwc); |
| 912 | if (ret) |
| 913 | goto err0; |
| 914 | |
Roger Quadros | 9811204 | 2018-02-12 15:30:08 +0200 | [diff] [blame] | 915 | if (!dwc->ulpi_ready) { |
| 916 | ret = dwc3_core_ulpi_init(dwc); |
| 917 | if (ret) |
| 918 | goto err0; |
| 919 | dwc->ulpi_ready = true; |
| 920 | } |
| 921 | |
| 922 | if (!dwc->phys_ready) { |
| 923 | ret = dwc3_core_get_phy(dwc); |
| 924 | if (ret) |
| 925 | goto err0a; |
| 926 | dwc->phys_ready = true; |
| 927 | } |
| 928 | |
| 929 | ret = dwc3_core_soft_reset(dwc); |
| 930 | if (ret) |
| 931 | goto err0a; |
| 932 | |
Felipe Balbi | 941f918 | 2016-10-14 16:23:24 +0300 | [diff] [blame] | 933 | dwc3_core_setup_global_control(dwc); |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 934 | dwc3_core_num_eps(dwc); |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 935 | |
| 936 | ret = dwc3_setup_scratch_buffers(dwc); |
| 937 | if (ret) |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 938 | goto err1; |
| 939 | |
| 940 | /* Adjust Frame Length */ |
| 941 | dwc3_frame_length_adjustment(dwc); |
| 942 | |
Pengbo Mu | d9612c2 | 2018-07-23 18:32:37 +0800 | [diff] [blame] | 943 | dwc3_set_incr_burst_type(dwc); |
| 944 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 945 | usb_phy_set_suspend(dwc->usb2_phy, 0); |
| 946 | usb_phy_set_suspend(dwc->usb3_phy, 0); |
| 947 | ret = phy_power_on(dwc->usb2_generic_phy); |
| 948 | if (ret < 0) |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 949 | goto err2; |
| 950 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 951 | ret = phy_power_on(dwc->usb3_generic_phy); |
| 952 | if (ret < 0) |
| 953 | goto err3; |
| 954 | |
| 955 | ret = dwc3_event_buffers_setup(dwc); |
| 956 | if (ret) { |
| 957 | dev_err(dwc->dev, "failed to setup event buffers\n"); |
| 958 | goto err4; |
| 959 | } |
| 960 | |
John Youn | 06281d4 | 2016-08-22 15:39:13 -0700 | [diff] [blame] | 961 | /* |
| 962 | * ENDXFER polling is available on version 3.10a and later of |
| 963 | * the DWC_usb3 controller. It is NOT available in the |
| 964 | * DWC_usb31 controller. |
| 965 | */ |
| 966 | if (!dwc3_is_usb31(dwc) && dwc->revision >= DWC3_REVISION_310A) { |
| 967 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL2); |
| 968 | reg |= DWC3_GUCTL2_RST_ACTBITLATER; |
| 969 | dwc3_writel(dwc->regs, DWC3_GUCTL2, reg); |
| 970 | } |
| 971 | |
William Wu | 65db7a0 | 2017-04-19 20:11:38 +0800 | [diff] [blame] | 972 | if (dwc->revision >= DWC3_REVISION_250A) { |
John Youn | 0bb39ca | 2016-10-12 18:00:55 -0700 | [diff] [blame] | 973 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); |
William Wu | 65db7a0 | 2017-04-19 20:11:38 +0800 | [diff] [blame] | 974 | |
| 975 | /* |
| 976 | * Enable hardware control of sending remote wakeup |
| 977 | * in HS when the device is in the L1 state. |
| 978 | */ |
| 979 | if (dwc->revision >= DWC3_REVISION_290A) |
| 980 | reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; |
| 981 | |
| 982 | if (dwc->dis_tx_ipgap_linecheck_quirk) |
| 983 | reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; |
| 984 | |
John Youn | 0bb39ca | 2016-10-12 18:00:55 -0700 | [diff] [blame] | 985 | dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); |
| 986 | } |
| 987 | |
Anurag Kumar Vulisha | b138e23 | 2018-07-27 13:11:20 +0530 | [diff] [blame^] | 988 | if (dwc->dr_mode == USB_DR_MODE_HOST || |
| 989 | dwc->dr_mode == USB_DR_MODE_OTG) { |
| 990 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL); |
| 991 | |
| 992 | /* |
| 993 | * Enable Auto retry Feature to make the controller operating in |
| 994 | * Host mode on seeing transaction errors(CRC errors or internal |
| 995 | * overrun scenerios) on IN transfers to reply to the device |
| 996 | * with a non-terminating retry ACK (i.e, an ACK transcation |
| 997 | * packet with Retry=1 & Nump != 0) |
| 998 | */ |
| 999 | reg |= DWC3_GUCTL_HSTINAUTORETRY; |
| 1000 | |
| 1001 | dwc3_writel(dwc->regs, DWC3_GUCTL, reg); |
| 1002 | } |
| 1003 | |
Thinh Nguyen | 938a5ad | 2018-03-16 15:35:44 -0700 | [diff] [blame] | 1004 | /* |
| 1005 | * Must config both number of packets and max burst settings to enable |
| 1006 | * RX and/or TX threshold. |
| 1007 | */ |
| 1008 | if (dwc3_is_usb31(dwc) && dwc->dr_mode == USB_DR_MODE_HOST) { |
| 1009 | u8 rx_thr_num = dwc->rx_thr_num_pkt_prd; |
| 1010 | u8 rx_maxburst = dwc->rx_max_burst_prd; |
| 1011 | u8 tx_thr_num = dwc->tx_thr_num_pkt_prd; |
| 1012 | u8 tx_maxburst = dwc->tx_max_burst_prd; |
| 1013 | |
| 1014 | if (rx_thr_num && rx_maxburst) { |
| 1015 | reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); |
| 1016 | reg |= DWC31_RXTHRNUMPKTSEL_PRD; |
| 1017 | |
| 1018 | reg &= ~DWC31_RXTHRNUMPKT_PRD(~0); |
| 1019 | reg |= DWC31_RXTHRNUMPKT_PRD(rx_thr_num); |
| 1020 | |
| 1021 | reg &= ~DWC31_MAXRXBURSTSIZE_PRD(~0); |
| 1022 | reg |= DWC31_MAXRXBURSTSIZE_PRD(rx_maxburst); |
| 1023 | |
| 1024 | dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); |
| 1025 | } |
| 1026 | |
| 1027 | if (tx_thr_num && tx_maxburst) { |
| 1028 | reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG); |
| 1029 | reg |= DWC31_TXTHRNUMPKTSEL_PRD; |
| 1030 | |
| 1031 | reg &= ~DWC31_TXTHRNUMPKT_PRD(~0); |
| 1032 | reg |= DWC31_TXTHRNUMPKT_PRD(tx_thr_num); |
| 1033 | |
| 1034 | reg &= ~DWC31_MAXTXBURSTSIZE_PRD(~0); |
| 1035 | reg |= DWC31_MAXTXBURSTSIZE_PRD(tx_maxburst); |
| 1036 | |
| 1037 | dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg); |
| 1038 | } |
| 1039 | } |
| 1040 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1041 | return 0; |
| 1042 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1043 | err4: |
Vivek Gautam | 9b9d7cd | 2016-10-21 16:21:07 +0530 | [diff] [blame] | 1044 | phy_power_off(dwc->usb3_generic_phy); |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1045 | |
| 1046 | err3: |
Vivek Gautam | 9b9d7cd | 2016-10-21 16:21:07 +0530 | [diff] [blame] | 1047 | phy_power_off(dwc->usb2_generic_phy); |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1048 | |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 1049 | err2: |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1050 | usb_phy_set_suspend(dwc->usb2_phy, 1); |
| 1051 | usb_phy_set_suspend(dwc->usb3_phy, 1); |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 1052 | |
| 1053 | err1: |
| 1054 | usb_phy_shutdown(dwc->usb2_phy); |
| 1055 | usb_phy_shutdown(dwc->usb3_phy); |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 1056 | phy_exit(dwc->usb2_generic_phy); |
| 1057 | phy_exit(dwc->usb3_generic_phy); |
Felipe Balbi | 0ffcaf3 | 2013-12-19 13:04:28 -0600 | [diff] [blame] | 1058 | |
Roger Quadros | 9811204 | 2018-02-12 15:30:08 +0200 | [diff] [blame] | 1059 | err0a: |
| 1060 | dwc3_ulpi_exit(dwc); |
| 1061 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1062 | err0: |
| 1063 | return ret; |
| 1064 | } |
| 1065 | |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1066 | static int dwc3_core_get_phy(struct dwc3 *dwc) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1067 | { |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1068 | struct device *dev = dwc->dev; |
Felipe Balbi | 941ea36 | 2013-07-31 09:21:25 +0300 | [diff] [blame] | 1069 | struct device_node *node = dev->of_node; |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1070 | int ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1071 | |
Kishon Vijay Abraham I | 5088b6f | 2013-01-25 16:36:53 +0530 | [diff] [blame] | 1072 | if (node) { |
| 1073 | dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); |
| 1074 | dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); |
Felipe Balbi | bb67490 | 2013-08-14 13:21:23 -0500 | [diff] [blame] | 1075 | } else { |
| 1076 | dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); |
| 1077 | dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); |
Kishon Vijay Abraham I | 5088b6f | 2013-01-25 16:36:53 +0530 | [diff] [blame] | 1078 | } |
| 1079 | |
Felipe Balbi | d105e7f | 2013-03-15 10:52:08 +0200 | [diff] [blame] | 1080 | if (IS_ERR(dwc->usb2_phy)) { |
| 1081 | ret = PTR_ERR(dwc->usb2_phy); |
Kishon Vijay Abraham I | 122f06e | 2014-03-03 17:08:10 +0530 | [diff] [blame] | 1082 | if (ret == -ENXIO || ret == -ENODEV) { |
| 1083 | dwc->usb2_phy = NULL; |
| 1084 | } else if (ret == -EPROBE_DEFER) { |
Felipe Balbi | d105e7f | 2013-03-15 10:52:08 +0200 | [diff] [blame] | 1085 | return ret; |
Kishon Vijay Abraham I | 122f06e | 2014-03-03 17:08:10 +0530 | [diff] [blame] | 1086 | } else { |
| 1087 | dev_err(dev, "no usb2 phy configured\n"); |
| 1088 | return ret; |
| 1089 | } |
Felipe Balbi | 51e1e7b | 2012-07-19 14:09:48 +0300 | [diff] [blame] | 1090 | } |
| 1091 | |
Felipe Balbi | d105e7f | 2013-03-15 10:52:08 +0200 | [diff] [blame] | 1092 | if (IS_ERR(dwc->usb3_phy)) { |
Ruchika Kharwar | 315955d7 | 2013-07-04 00:59:34 -0500 | [diff] [blame] | 1093 | ret = PTR_ERR(dwc->usb3_phy); |
Kishon Vijay Abraham I | 122f06e | 2014-03-03 17:08:10 +0530 | [diff] [blame] | 1094 | if (ret == -ENXIO || ret == -ENODEV) { |
| 1095 | dwc->usb3_phy = NULL; |
| 1096 | } else if (ret == -EPROBE_DEFER) { |
Felipe Balbi | d105e7f | 2013-03-15 10:52:08 +0200 | [diff] [blame] | 1097 | return ret; |
Kishon Vijay Abraham I | 122f06e | 2014-03-03 17:08:10 +0530 | [diff] [blame] | 1098 | } else { |
| 1099 | dev_err(dev, "no usb3 phy configured\n"); |
| 1100 | return ret; |
| 1101 | } |
Felipe Balbi | 51e1e7b | 2012-07-19 14:09:48 +0300 | [diff] [blame] | 1102 | } |
| 1103 | |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 1104 | dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy"); |
| 1105 | if (IS_ERR(dwc->usb2_generic_phy)) { |
| 1106 | ret = PTR_ERR(dwc->usb2_generic_phy); |
| 1107 | if (ret == -ENOSYS || ret == -ENODEV) { |
| 1108 | dwc->usb2_generic_phy = NULL; |
| 1109 | } else if (ret == -EPROBE_DEFER) { |
| 1110 | return ret; |
| 1111 | } else { |
| 1112 | dev_err(dev, "no usb2 phy configured\n"); |
| 1113 | return ret; |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy"); |
| 1118 | if (IS_ERR(dwc->usb3_generic_phy)) { |
| 1119 | ret = PTR_ERR(dwc->usb3_generic_phy); |
| 1120 | if (ret == -ENOSYS || ret == -ENODEV) { |
| 1121 | dwc->usb3_generic_phy = NULL; |
| 1122 | } else if (ret == -EPROBE_DEFER) { |
| 1123 | return ret; |
| 1124 | } else { |
| 1125 | dev_err(dev, "no usb3 phy configured\n"); |
| 1126 | return ret; |
| 1127 | } |
| 1128 | } |
| 1129 | |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1130 | return 0; |
| 1131 | } |
| 1132 | |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1133 | static int dwc3_core_init_mode(struct dwc3 *dwc) |
| 1134 | { |
| 1135 | struct device *dev = dwc->dev; |
| 1136 | int ret; |
| 1137 | |
| 1138 | switch (dwc->dr_mode) { |
| 1139 | case USB_DR_MODE_PERIPHERAL: |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 1140 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 1141 | |
| 1142 | if (dwc->usb2_phy) |
| 1143 | otg_set_vbus(dwc->usb2_phy->otg, false); |
Manu Gautam | 644cbbc | 2017-09-27 16:49:22 +0530 | [diff] [blame] | 1144 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); |
| 1145 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 1146 | |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1147 | ret = dwc3_gadget_init(dwc); |
| 1148 | if (ret) { |
Roger Quadros | 9522def | 2016-06-10 14:48:38 +0300 | [diff] [blame] | 1149 | if (ret != -EPROBE_DEFER) |
| 1150 | dev_err(dev, "failed to initialize gadget\n"); |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1151 | return ret; |
| 1152 | } |
| 1153 | break; |
| 1154 | case USB_DR_MODE_HOST: |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 1155 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 1156 | |
| 1157 | if (dwc->usb2_phy) |
| 1158 | otg_set_vbus(dwc->usb2_phy->otg, true); |
Manu Gautam | 644cbbc | 2017-09-27 16:49:22 +0530 | [diff] [blame] | 1159 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); |
| 1160 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST); |
Felipe Balbi | 958d1a4 | 2017-06-05 17:22:10 +0300 | [diff] [blame] | 1161 | |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1162 | ret = dwc3_host_init(dwc); |
| 1163 | if (ret) { |
Roger Quadros | 9522def | 2016-06-10 14:48:38 +0300 | [diff] [blame] | 1164 | if (ret != -EPROBE_DEFER) |
| 1165 | dev_err(dev, "failed to initialize host\n"); |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1166 | return ret; |
| 1167 | } |
Vivek Gautam | d8c80bb | 2017-10-09 14:00:51 +0200 | [diff] [blame] | 1168 | phy_calibrate(dwc->usb2_generic_phy); |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1169 | break; |
| 1170 | case USB_DR_MODE_OTG: |
Roger Quadros | 41ce145 | 2017-04-04 12:49:18 +0300 | [diff] [blame] | 1171 | INIT_WORK(&dwc->drd_work, __dwc3_set_mode); |
Roger Quadros | 9840354 | 2017-04-05 13:39:31 +0300 | [diff] [blame] | 1172 | ret = dwc3_drd_init(dwc); |
| 1173 | if (ret) { |
| 1174 | if (ret != -EPROBE_DEFER) |
| 1175 | dev_err(dev, "failed to initialize dual-role\n"); |
| 1176 | return ret; |
| 1177 | } |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1178 | break; |
| 1179 | default: |
| 1180 | dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); |
| 1181 | return -EINVAL; |
| 1182 | } |
| 1183 | |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
| 1187 | static void dwc3_core_exit_mode(struct dwc3 *dwc) |
| 1188 | { |
| 1189 | switch (dwc->dr_mode) { |
| 1190 | case USB_DR_MODE_PERIPHERAL: |
| 1191 | dwc3_gadget_exit(dwc); |
| 1192 | break; |
| 1193 | case USB_DR_MODE_HOST: |
| 1194 | dwc3_host_exit(dwc); |
| 1195 | break; |
| 1196 | case USB_DR_MODE_OTG: |
Roger Quadros | 9840354 | 2017-04-05 13:39:31 +0300 | [diff] [blame] | 1197 | dwc3_drd_exit(dwc); |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1198 | break; |
| 1199 | default: |
| 1200 | /* do nothing */ |
| 1201 | break; |
| 1202 | } |
| 1203 | } |
| 1204 | |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1205 | static void dwc3_get_properties(struct dwc3 *dwc) |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1206 | { |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1207 | struct device *dev = dwc->dev; |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1208 | u8 lpm_nyet_threshold; |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1209 | u8 tx_de_emphasis; |
Huang Rui | 460d098 | 2014-10-31 11:11:18 +0800 | [diff] [blame] | 1210 | u8 hird_threshold; |
Thinh Nguyen | 938a5ad | 2018-03-16 15:35:44 -0700 | [diff] [blame] | 1211 | u8 rx_thr_num_pkt_prd; |
| 1212 | u8 rx_max_burst_prd; |
| 1213 | u8 tx_thr_num_pkt_prd; |
| 1214 | u8 tx_max_burst_prd; |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1215 | |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1216 | /* default to highest possible threshold */ |
| 1217 | lpm_nyet_threshold = 0xff; |
| 1218 | |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1219 | /* default to -3.5dB de-emphasis */ |
| 1220 | tx_de_emphasis = 1; |
| 1221 | |
Huang Rui | 460d098 | 2014-10-31 11:11:18 +0800 | [diff] [blame] | 1222 | /* |
| 1223 | * default to assert utmi_sleep_n and use maximum allowed HIRD |
| 1224 | * threshold value of 0b1100 |
| 1225 | */ |
| 1226 | hird_threshold = 12; |
| 1227 | |
Heikki Krogerus | 63863b9 | 2015-09-21 11:14:32 +0300 | [diff] [blame] | 1228 | dwc->maximum_speed = usb_get_maximum_speed(dev); |
Heikki Krogerus | 06e7114 | 2015-09-21 11:14:34 +0300 | [diff] [blame] | 1229 | dwc->dr_mode = usb_get_dr_mode(dev); |
William Wu | 32f2ed8 | 2016-08-16 22:44:38 +0800 | [diff] [blame] | 1230 | dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node); |
Heikki Krogerus | 63863b9 | 2015-09-21 11:14:32 +0300 | [diff] [blame] | 1231 | |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 1232 | dwc->sysdev_is_parent = device_property_read_bool(dev, |
| 1233 | "linux,sysdev_is_parent"); |
| 1234 | if (dwc->sysdev_is_parent) |
| 1235 | dwc->sysdev = dwc->dev->parent; |
| 1236 | else |
| 1237 | dwc->sysdev = dwc->dev; |
| 1238 | |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1239 | dwc->has_lpm_erratum = device_property_read_bool(dev, |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1240 | "snps,has-lpm-erratum"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1241 | device_property_read_u8(dev, "snps,lpm-nyet-threshold", |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1242 | &lpm_nyet_threshold); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1243 | dwc->is_utmi_l1_suspend = device_property_read_bool(dev, |
Huang Rui | 460d098 | 2014-10-31 11:11:18 +0800 | [diff] [blame] | 1244 | "snps,is-utmi-l1-suspend"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1245 | device_property_read_u8(dev, "snps,hird-threshold", |
Huang Rui | 460d098 | 2014-10-31 11:11:18 +0800 | [diff] [blame] | 1246 | &hird_threshold); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1247 | dwc->usb3_lpm_capable = device_property_read_bool(dev, |
Robert Baldyga | eac68e8 | 2015-03-09 15:06:12 +0100 | [diff] [blame] | 1248 | "snps,usb3_lpm_capable"); |
Thinh Nguyen | 938a5ad | 2018-03-16 15:35:44 -0700 | [diff] [blame] | 1249 | device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd", |
| 1250 | &rx_thr_num_pkt_prd); |
| 1251 | device_property_read_u8(dev, "snps,rx-max-burst-prd", |
| 1252 | &rx_max_burst_prd); |
| 1253 | device_property_read_u8(dev, "snps,tx-thr-num-pkt-prd", |
| 1254 | &tx_thr_num_pkt_prd); |
| 1255 | device_property_read_u8(dev, "snps,tx-max-burst-prd", |
| 1256 | &tx_max_burst_prd); |
Felipe Balbi | 3c9f94a | 2014-04-16 15:08:29 -0500 | [diff] [blame] | 1257 | |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1258 | dwc->disable_scramble_quirk = device_property_read_bool(dev, |
Huang Rui | 3b81221 | 2014-10-28 19:54:25 +0800 | [diff] [blame] | 1259 | "snps,disable_scramble_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1260 | dwc->u2exit_lfps_quirk = device_property_read_bool(dev, |
Huang Rui | 9a5b2f3 | 2014-10-28 19:54:27 +0800 | [diff] [blame] | 1261 | "snps,u2exit_lfps_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1262 | dwc->u2ss_inp3_quirk = device_property_read_bool(dev, |
Huang Rui | b5a65c4 | 2014-10-28 19:54:28 +0800 | [diff] [blame] | 1263 | "snps,u2ss_inp3_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1264 | dwc->req_p1p2p3_quirk = device_property_read_bool(dev, |
Huang Rui | df31f5b | 2014-10-28 19:54:29 +0800 | [diff] [blame] | 1265 | "snps,req_p1p2p3_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1266 | dwc->del_p1p2p3_quirk = device_property_read_bool(dev, |
Huang Rui | a2a1d0f | 2014-10-28 19:54:30 +0800 | [diff] [blame] | 1267 | "snps,del_p1p2p3_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1268 | dwc->del_phy_power_chg_quirk = device_property_read_bool(dev, |
Huang Rui | 41c06ff | 2014-10-28 19:54:31 +0800 | [diff] [blame] | 1269 | "snps,del_phy_power_chg_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1270 | dwc->lfps_filter_quirk = device_property_read_bool(dev, |
Huang Rui | fb67afc | 2014-10-28 19:54:32 +0800 | [diff] [blame] | 1271 | "snps,lfps_filter_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1272 | dwc->rx_detect_poll_quirk = device_property_read_bool(dev, |
Huang Rui | 14f4ac5 | 2014-10-28 19:54:33 +0800 | [diff] [blame] | 1273 | "snps,rx_detect_poll_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1274 | dwc->dis_u3_susphy_quirk = device_property_read_bool(dev, |
Huang Rui | 59acfa2 | 2014-10-31 11:11:13 +0800 | [diff] [blame] | 1275 | "snps,dis_u3_susphy_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1276 | dwc->dis_u2_susphy_quirk = device_property_read_bool(dev, |
Huang Rui | 0effe0a | 2014-10-31 11:11:14 +0800 | [diff] [blame] | 1277 | "snps,dis_u2_susphy_quirk"); |
John Youn | ec791d1 | 2015-10-02 20:30:57 -0700 | [diff] [blame] | 1278 | dwc->dis_enblslpm_quirk = device_property_read_bool(dev, |
| 1279 | "snps,dis_enblslpm_quirk"); |
Rajesh Bhagat | e58dd35 | 2016-03-14 14:40:50 +0530 | [diff] [blame] | 1280 | dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev, |
| 1281 | "snps,dis_rxdet_inp3_quirk"); |
William Wu | 16199f3 | 2016-08-16 22:44:37 +0800 | [diff] [blame] | 1282 | dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev, |
| 1283 | "snps,dis-u2-freeclk-exists-quirk"); |
William Wu | 00fe081 | 2016-08-16 22:44:39 +0800 | [diff] [blame] | 1284 | dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev, |
| 1285 | "snps,dis-del-phy-power-chg-quirk"); |
William Wu | 65db7a0 | 2017-04-19 20:11:38 +0800 | [diff] [blame] | 1286 | dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev, |
| 1287 | "snps,dis-tx-ipgap-linecheck-quirk"); |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1288 | |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1289 | dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1290 | "snps,tx_de_emphasis_quirk"); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1291 | device_property_read_u8(dev, "snps,tx_de_emphasis", |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1292 | &tx_de_emphasis); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1293 | device_property_read_string(dev, "snps,hsphy_interface", |
| 1294 | &dwc->hsphy_interface); |
| 1295 | device_property_read_u32(dev, "snps,quirk-frame-length-adjustment", |
Felipe Balbi | bcdb327 | 2016-05-16 10:42:23 +0300 | [diff] [blame] | 1296 | &dwc->fladj); |
Heikki Krogerus | 3d12891 | 2015-09-21 11:14:35 +0300 | [diff] [blame] | 1297 | |
Roger Quadros | 42bf02e | 2017-10-31 15:11:55 +0200 | [diff] [blame] | 1298 | dwc->dis_metastability_quirk = device_property_read_bool(dev, |
| 1299 | "snps,dis_metastability_quirk"); |
| 1300 | |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1301 | dwc->lpm_nyet_threshold = lpm_nyet_threshold; |
Huang Rui | 6b6a0c9 | 2014-10-31 11:11:12 +0800 | [diff] [blame] | 1302 | dwc->tx_de_emphasis = tx_de_emphasis; |
Huang Rui | 80caf7d | 2014-10-28 19:54:26 +0800 | [diff] [blame] | 1303 | |
Huang Rui | 460d098 | 2014-10-31 11:11:18 +0800 | [diff] [blame] | 1304 | dwc->hird_threshold = hird_threshold |
| 1305 | | (dwc->is_utmi_l1_suspend << 4); |
| 1306 | |
Thinh Nguyen | 938a5ad | 2018-03-16 15:35:44 -0700 | [diff] [blame] | 1307 | dwc->rx_thr_num_pkt_prd = rx_thr_num_pkt_prd; |
| 1308 | dwc->rx_max_burst_prd = rx_max_burst_prd; |
| 1309 | |
| 1310 | dwc->tx_thr_num_pkt_prd = tx_thr_num_pkt_prd; |
| 1311 | dwc->tx_max_burst_prd = tx_max_burst_prd; |
| 1312 | |
John Youn | cf40b86 | 2016-11-14 12:32:43 -0800 | [diff] [blame] | 1313 | dwc->imod_interval = 0; |
| 1314 | } |
| 1315 | |
| 1316 | /* check whether the core supports IMOD */ |
| 1317 | bool dwc3_has_imod(struct dwc3 *dwc) |
| 1318 | { |
| 1319 | return ((dwc3_is_usb3(dwc) && |
| 1320 | dwc->revision >= DWC3_REVISION_300A) || |
| 1321 | (dwc3_is_usb31(dwc) && |
| 1322 | dwc->revision >= DWC3_USB31_REVISION_120A)); |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1323 | } |
| 1324 | |
John Youn | 7ac51a1 | 2016-11-10 17:08:51 -0800 | [diff] [blame] | 1325 | static void dwc3_check_params(struct dwc3 *dwc) |
| 1326 | { |
| 1327 | struct device *dev = dwc->dev; |
| 1328 | |
John Youn | cf40b86 | 2016-11-14 12:32:43 -0800 | [diff] [blame] | 1329 | /* Check for proper value of imod_interval */ |
| 1330 | if (dwc->imod_interval && !dwc3_has_imod(dwc)) { |
| 1331 | dev_warn(dwc->dev, "Interrupt moderation not supported\n"); |
| 1332 | dwc->imod_interval = 0; |
| 1333 | } |
| 1334 | |
John Youn | 28632b4 | 2016-11-14 12:32:45 -0800 | [diff] [blame] | 1335 | /* |
| 1336 | * Workaround for STAR 9000961433 which affects only version |
| 1337 | * 3.00a of the DWC_usb3 core. This prevents the controller |
| 1338 | * interrupt from being masked while handling events. IMOD |
| 1339 | * allows us to work around this issue. Enable it for the |
| 1340 | * affected version. |
| 1341 | */ |
| 1342 | if (!dwc->imod_interval && |
| 1343 | (dwc->revision == DWC3_REVISION_300A)) |
| 1344 | dwc->imod_interval = 1; |
| 1345 | |
John Youn | 7ac51a1 | 2016-11-10 17:08:51 -0800 | [diff] [blame] | 1346 | /* Check the maximum_speed parameter */ |
| 1347 | switch (dwc->maximum_speed) { |
| 1348 | case USB_SPEED_LOW: |
| 1349 | case USB_SPEED_FULL: |
| 1350 | case USB_SPEED_HIGH: |
| 1351 | case USB_SPEED_SUPER: |
| 1352 | case USB_SPEED_SUPER_PLUS: |
| 1353 | break; |
| 1354 | default: |
| 1355 | dev_err(dev, "invalid maximum_speed parameter %d\n", |
| 1356 | dwc->maximum_speed); |
| 1357 | /* fall through */ |
| 1358 | case USB_SPEED_UNKNOWN: |
| 1359 | /* default to superspeed */ |
| 1360 | dwc->maximum_speed = USB_SPEED_SUPER; |
| 1361 | |
| 1362 | /* |
| 1363 | * default to superspeed plus if we are capable. |
| 1364 | */ |
| 1365 | if (dwc3_is_usb31(dwc) && |
| 1366 | (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) == |
| 1367 | DWC3_GHWPARAMS3_SSPHY_IFC_GEN2)) |
| 1368 | dwc->maximum_speed = USB_SPEED_SUPER_PLUS; |
| 1369 | |
| 1370 | break; |
| 1371 | } |
| 1372 | } |
| 1373 | |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1374 | static int dwc3_probe(struct platform_device *pdev) |
| 1375 | { |
| 1376 | struct device *dev = &pdev->dev; |
Masahiro Yamada | 44feb8e | 2018-04-19 20:03:37 +0900 | [diff] [blame] | 1377 | struct resource *res, dwc_res; |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1378 | struct dwc3 *dwc; |
| 1379 | |
| 1380 | int ret; |
| 1381 | |
| 1382 | void __iomem *regs; |
| 1383 | |
| 1384 | dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); |
| 1385 | if (!dwc) |
| 1386 | return -ENOMEM; |
| 1387 | |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1388 | dwc->clks = devm_kmemdup(dev, dwc3_core_clks, sizeof(dwc3_core_clks), |
| 1389 | GFP_KERNEL); |
| 1390 | if (!dwc->clks) |
| 1391 | return -ENOMEM; |
| 1392 | |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1393 | dwc->dev = dev; |
| 1394 | |
| 1395 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1396 | if (!res) { |
| 1397 | dev_err(dev, "missing memory resource\n"); |
| 1398 | return -ENODEV; |
| 1399 | } |
| 1400 | |
| 1401 | dwc->xhci_resources[0].start = res->start; |
| 1402 | dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + |
| 1403 | DWC3_XHCI_REGS_END; |
| 1404 | dwc->xhci_resources[0].flags = res->flags; |
| 1405 | dwc->xhci_resources[0].name = res->name; |
| 1406 | |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1407 | /* |
| 1408 | * Request memory region but exclude xHCI regs, |
| 1409 | * since it will be requested by the xhci-plat driver. |
| 1410 | */ |
Masahiro Yamada | 44feb8e | 2018-04-19 20:03:37 +0900 | [diff] [blame] | 1411 | dwc_res = *res; |
| 1412 | dwc_res.start += DWC3_GLOBALS_REGS_START; |
| 1413 | |
| 1414 | regs = devm_ioremap_resource(dev, &dwc_res); |
| 1415 | if (IS_ERR(regs)) |
| 1416 | return PTR_ERR(regs); |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1417 | |
| 1418 | dwc->regs = regs; |
Masahiro Yamada | 44feb8e | 2018-04-19 20:03:37 +0900 | [diff] [blame] | 1419 | dwc->regs_size = resource_size(&dwc_res); |
Felipe Balbi | c5ac611 | 2016-10-14 16:30:52 +0300 | [diff] [blame] | 1420 | |
| 1421 | dwc3_get_properties(dwc); |
| 1422 | |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1423 | dwc->reset = devm_reset_control_get_optional_shared(dev, NULL); |
| 1424 | if (IS_ERR(dwc->reset)) |
| 1425 | return PTR_ERR(dwc->reset); |
| 1426 | |
Hans de Goede | 6152777 | 2018-06-12 10:24:48 +0200 | [diff] [blame] | 1427 | if (dev->of_node) { |
| 1428 | dwc->num_clks = ARRAY_SIZE(dwc3_core_clks); |
| 1429 | |
| 1430 | ret = clk_bulk_get(dev, dwc->num_clks, dwc->clks); |
| 1431 | if (ret == -EPROBE_DEFER) |
| 1432 | return ret; |
| 1433 | /* |
| 1434 | * Clocks are optional, but new DT platforms should support all |
| 1435 | * clocks as required by the DT-binding. |
| 1436 | */ |
| 1437 | if (ret) |
| 1438 | dwc->num_clks = 0; |
| 1439 | } |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1440 | |
| 1441 | ret = reset_control_deassert(dwc->reset); |
| 1442 | if (ret) |
| 1443 | goto put_clks; |
| 1444 | |
| 1445 | ret = clk_bulk_prepare(dwc->num_clks, dwc->clks); |
| 1446 | if (ret) |
| 1447 | goto assert_reset; |
| 1448 | |
| 1449 | ret = clk_bulk_enable(dwc->num_clks, dwc->clks); |
| 1450 | if (ret) |
| 1451 | goto unprepare_clks; |
| 1452 | |
Heikki Krogerus | 6c89cce0 | 2015-05-13 15:26:45 +0300 | [diff] [blame] | 1453 | platform_set_drvdata(pdev, dwc); |
Heikki Krogerus | 2917e71 | 2015-05-13 15:26:46 +0300 | [diff] [blame] | 1454 | dwc3_cache_hwparams(dwc); |
Heikki Krogerus | 6c89cce0 | 2015-05-13 15:26:45 +0300 | [diff] [blame] | 1455 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1456 | spin_lock_init(&dwc->lock); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1457 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1458 | pm_runtime_set_active(dev); |
| 1459 | pm_runtime_use_autosuspend(dev); |
| 1460 | pm_runtime_set_autosuspend_delay(dev, DWC3_DEFAULT_AUTOSUSPEND_DELAY); |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 1461 | pm_runtime_enable(dev); |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1462 | ret = pm_runtime_get_sync(dev); |
| 1463 | if (ret < 0) |
| 1464 | goto err1; |
| 1465 | |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 1466 | pm_runtime_forbid(dev); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1467 | |
Felipe Balbi | 3921426 | 2012-10-11 13:54:36 +0300 | [diff] [blame] | 1468 | ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); |
| 1469 | if (ret) { |
| 1470 | dev_err(dwc->dev, "failed to allocate event buffers\n"); |
| 1471 | ret = -ENOMEM; |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1472 | goto err2; |
Felipe Balbi | 3921426 | 2012-10-11 13:54:36 +0300 | [diff] [blame] | 1473 | } |
| 1474 | |
Thinh Nguyen | 9d6173e | 2016-09-06 19:22:03 -0700 | [diff] [blame] | 1475 | ret = dwc3_get_dr_mode(dwc); |
| 1476 | if (ret) |
| 1477 | goto err3; |
Felipe Balbi | 32a4a13 | 2014-02-25 14:00:13 -0600 | [diff] [blame] | 1478 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1479 | ret = dwc3_alloc_scratch_buffers(dwc); |
| 1480 | if (ret) |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1481 | goto err3; |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1482 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1483 | ret = dwc3_core_init(dwc); |
| 1484 | if (ret) { |
Chanho Park | 802ca85 | 2012-02-15 18:27:55 +0900 | [diff] [blame] | 1485 | dev_err(dev, "failed to initialize core\n"); |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1486 | goto err4; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1487 | } |
| 1488 | |
John Youn | 7ac51a1 | 2016-11-10 17:08:51 -0800 | [diff] [blame] | 1489 | dwc3_check_params(dwc); |
John Youn | 2c7f1bd | 2016-02-05 17:08:59 -0800 | [diff] [blame] | 1490 | |
Felipe Balbi | 5f94adf | 2014-04-16 15:13:45 -0500 | [diff] [blame] | 1491 | ret = dwc3_core_init_mode(dwc); |
| 1492 | if (ret) |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1493 | goto err5; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1494 | |
Du, Changbin | 4e9f311 | 2016-04-12 19:10:18 +0800 | [diff] [blame] | 1495 | dwc3_debugfs_init(dwc); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1496 | pm_runtime_put(dev); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1497 | |
| 1498 | return 0; |
| 1499 | |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1500 | err5: |
Felipe Balbi | f122d33 | 2013-02-08 15:15:11 +0200 | [diff] [blame] | 1501 | dwc3_event_buffers_cleanup(dwc); |
| 1502 | |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1503 | err4: |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1504 | dwc3_free_scratch_buffers(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1505 | |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1506 | err3: |
Felipe Balbi | 3921426 | 2012-10-11 13:54:36 +0300 | [diff] [blame] | 1507 | dwc3_free_event_buffers(dwc); |
| 1508 | |
Roger Quadros | 3280823 | 2016-06-10 14:38:02 +0300 | [diff] [blame] | 1509 | err2: |
| 1510 | pm_runtime_allow(&pdev->dev); |
| 1511 | |
| 1512 | err1: |
| 1513 | pm_runtime_put_sync(&pdev->dev); |
| 1514 | pm_runtime_disable(&pdev->dev); |
| 1515 | |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1516 | clk_bulk_disable(dwc->num_clks, dwc->clks); |
| 1517 | unprepare_clks: |
| 1518 | clk_bulk_unprepare(dwc->num_clks, dwc->clks); |
| 1519 | assert_reset: |
| 1520 | reset_control_assert(dwc->reset); |
| 1521 | put_clks: |
| 1522 | clk_bulk_put(dwc->num_clks, dwc->clks); |
| 1523 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1524 | return ret; |
| 1525 | } |
| 1526 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 1527 | static int dwc3_remove(struct platform_device *pdev) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1528 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1529 | struct dwc3 *dwc = platform_get_drvdata(pdev); |
Felipe Balbi | 3da1f6e | 2014-09-02 15:19:43 -0500 | [diff] [blame] | 1530 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1531 | pm_runtime_get_sync(&pdev->dev); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1532 | |
Felipe Balbi | dc99f16 | 2014-09-03 16:13:37 -0500 | [diff] [blame] | 1533 | dwc3_debugfs_exit(dwc); |
| 1534 | dwc3_core_exit_mode(dwc); |
Kishon Vijay Abraham I | 8ba007a | 2013-01-25 08:30:54 +0530 | [diff] [blame] | 1535 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1536 | dwc3_core_exit(dwc); |
Heikki Krogerus | 88bc9d1 | 2015-05-13 15:26:51 +0300 | [diff] [blame] | 1537 | dwc3_ulpi_exit(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1538 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1539 | pm_runtime_put_sync(&pdev->dev); |
| 1540 | pm_runtime_allow(&pdev->dev); |
| 1541 | pm_runtime_disable(&pdev->dev); |
| 1542 | |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1543 | dwc3_free_event_buffers(dwc); |
| 1544 | dwc3_free_scratch_buffers(dwc); |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1545 | clk_bulk_put(dwc->num_clks, dwc->clks); |
Felipe Balbi | c499ff7 | 2016-05-16 10:49:01 +0300 | [diff] [blame] | 1546 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1547 | return 0; |
| 1548 | } |
| 1549 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1550 | #ifdef CONFIG_PM |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1551 | static int dwc3_core_init_for_resume(struct dwc3 *dwc) |
| 1552 | { |
| 1553 | int ret; |
| 1554 | |
| 1555 | ret = reset_control_deassert(dwc->reset); |
| 1556 | if (ret) |
| 1557 | return ret; |
| 1558 | |
| 1559 | ret = clk_bulk_prepare(dwc->num_clks, dwc->clks); |
| 1560 | if (ret) |
| 1561 | goto assert_reset; |
| 1562 | |
| 1563 | ret = clk_bulk_enable(dwc->num_clks, dwc->clks); |
| 1564 | if (ret) |
| 1565 | goto unprepare_clks; |
| 1566 | |
| 1567 | ret = dwc3_core_init(dwc); |
| 1568 | if (ret) |
| 1569 | goto disable_clks; |
| 1570 | |
| 1571 | return 0; |
| 1572 | |
| 1573 | disable_clks: |
| 1574 | clk_bulk_disable(dwc->num_clks, dwc->clks); |
| 1575 | unprepare_clks: |
| 1576 | clk_bulk_unprepare(dwc->num_clks, dwc->clks); |
| 1577 | assert_reset: |
| 1578 | reset_control_assert(dwc->reset); |
| 1579 | |
| 1580 | return ret; |
| 1581 | } |
| 1582 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1583 | static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1584 | { |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1585 | unsigned long flags; |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1586 | u32 reg; |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1587 | |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1588 | switch (dwc->current_dr_role) { |
| 1589 | case DWC3_GCTL_PRTCAP_DEVICE: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1590 | spin_lock_irqsave(&dwc->lock, flags); |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1591 | dwc3_gadget_suspend(dwc); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1592 | spin_unlock_irqrestore(&dwc->lock, flags); |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1593 | dwc3_core_exit(dwc); |
Felipe Balbi | 51f5d49 | 2016-05-16 10:52:58 +0300 | [diff] [blame] | 1594 | break; |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1595 | case DWC3_GCTL_PRTCAP_HOST: |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1596 | if (!PMSG_IS_AUTO(msg)) { |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1597 | dwc3_core_exit(dwc); |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1598 | break; |
| 1599 | } |
| 1600 | |
| 1601 | /* Let controller to suspend HSPHY before PHY driver suspends */ |
| 1602 | if (dwc->dis_u2_susphy_quirk || |
| 1603 | dwc->dis_enblslpm_quirk) { |
| 1604 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); |
| 1605 | reg |= DWC3_GUSB2PHYCFG_ENBLSLPM | |
| 1606 | DWC3_GUSB2PHYCFG_SUSPHY; |
| 1607 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
| 1608 | |
| 1609 | /* Give some time for USB2 PHY to suspend */ |
| 1610 | usleep_range(5000, 6000); |
| 1611 | } |
| 1612 | |
| 1613 | phy_pm_runtime_put_sync(dwc->usb2_generic_phy); |
| 1614 | phy_pm_runtime_put_sync(dwc->usb3_generic_phy); |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1615 | break; |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 1616 | case DWC3_GCTL_PRTCAP_OTG: |
| 1617 | /* do nothing during runtime_suspend */ |
| 1618 | if (PMSG_IS_AUTO(msg)) |
| 1619 | break; |
| 1620 | |
| 1621 | if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { |
| 1622 | spin_lock_irqsave(&dwc->lock, flags); |
| 1623 | dwc3_gadget_suspend(dwc); |
| 1624 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 1625 | } |
| 1626 | |
| 1627 | dwc3_otg_exit(dwc); |
| 1628 | dwc3_core_exit(dwc); |
| 1629 | break; |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1630 | default: |
Felipe Balbi | 51f5d49 | 2016-05-16 10:52:58 +0300 | [diff] [blame] | 1631 | /* do nothing */ |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1632 | break; |
| 1633 | } |
| 1634 | |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1635 | return 0; |
| 1636 | } |
| 1637 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1638 | static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1639 | { |
| 1640 | unsigned long flags; |
| 1641 | int ret; |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1642 | u32 reg; |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1643 | |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1644 | switch (dwc->current_dr_role) { |
| 1645 | case DWC3_GCTL_PRTCAP_DEVICE: |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1646 | ret = dwc3_core_init_for_resume(dwc); |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1647 | if (ret) |
| 1648 | return ret; |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1649 | |
Roger Quadros | 7d11c3a | 2018-03-16 16:44:27 +0200 | [diff] [blame] | 1650 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1651 | spin_lock_irqsave(&dwc->lock, flags); |
| 1652 | dwc3_gadget_resume(dwc); |
| 1653 | spin_unlock_irqrestore(&dwc->lock, flags); |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1654 | break; |
| 1655 | case DWC3_GCTL_PRTCAP_HOST: |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1656 | if (!PMSG_IS_AUTO(msg)) { |
Masahiro Yamada | fe8abf3 | 2018-05-16 11:41:07 +0900 | [diff] [blame] | 1657 | ret = dwc3_core_init_for_resume(dwc); |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1658 | if (ret) |
| 1659 | return ret; |
Roger Quadros | 7d11c3a | 2018-03-16 16:44:27 +0200 | [diff] [blame] | 1660 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1661 | break; |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1662 | } |
Manu Gautam | bcb1287 | 2018-05-09 23:09:21 +0530 | [diff] [blame] | 1663 | /* Restore GUSB2PHYCFG bits that were modified in suspend */ |
| 1664 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); |
| 1665 | if (dwc->dis_u2_susphy_quirk) |
| 1666 | reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; |
| 1667 | |
| 1668 | if (dwc->dis_enblslpm_quirk) |
| 1669 | reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; |
| 1670 | |
| 1671 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
| 1672 | |
| 1673 | phy_pm_runtime_get_sync(dwc->usb2_generic_phy); |
| 1674 | phy_pm_runtime_get_sync(dwc->usb3_generic_phy); |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1675 | break; |
Roger Quadros | f09cc79 | 2018-02-27 13:30:19 +0200 | [diff] [blame] | 1676 | case DWC3_GCTL_PRTCAP_OTG: |
| 1677 | /* nothing to do on runtime_resume */ |
| 1678 | if (PMSG_IS_AUTO(msg)) |
| 1679 | break; |
| 1680 | |
| 1681 | ret = dwc3_core_init(dwc); |
| 1682 | if (ret) |
| 1683 | return ret; |
| 1684 | |
| 1685 | dwc3_set_prtcap(dwc, dwc->current_dr_role); |
| 1686 | |
| 1687 | dwc3_otg_init(dwc); |
| 1688 | if (dwc->current_otg_role == DWC3_OTG_ROLE_HOST) { |
| 1689 | dwc3_otg_host_init(dwc); |
| 1690 | } else if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { |
| 1691 | spin_lock_irqsave(&dwc->lock, flags); |
| 1692 | dwc3_gadget_resume(dwc); |
| 1693 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 1694 | } |
| 1695 | |
| 1696 | break; |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1697 | default: |
| 1698 | /* do nothing */ |
| 1699 | break; |
| 1700 | } |
| 1701 | |
| 1702 | return 0; |
| 1703 | } |
| 1704 | |
| 1705 | static int dwc3_runtime_checks(struct dwc3 *dwc) |
| 1706 | { |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1707 | switch (dwc->current_dr_role) { |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1708 | case DWC3_GCTL_PRTCAP_DEVICE: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1709 | if (dwc->connected) |
| 1710 | return -EBUSY; |
| 1711 | break; |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1712 | case DWC3_GCTL_PRTCAP_HOST: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1713 | default: |
| 1714 | /* do nothing */ |
| 1715 | break; |
| 1716 | } |
| 1717 | |
| 1718 | return 0; |
| 1719 | } |
| 1720 | |
| 1721 | static int dwc3_runtime_suspend(struct device *dev) |
| 1722 | { |
| 1723 | struct dwc3 *dwc = dev_get_drvdata(dev); |
| 1724 | int ret; |
| 1725 | |
| 1726 | if (dwc3_runtime_checks(dwc)) |
| 1727 | return -EBUSY; |
| 1728 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1729 | ret = dwc3_suspend_common(dwc, PMSG_AUTO_SUSPEND); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1730 | if (ret) |
| 1731 | return ret; |
| 1732 | |
| 1733 | device_init_wakeup(dev, true); |
| 1734 | |
| 1735 | return 0; |
| 1736 | } |
| 1737 | |
| 1738 | static int dwc3_runtime_resume(struct device *dev) |
| 1739 | { |
| 1740 | struct dwc3 *dwc = dev_get_drvdata(dev); |
| 1741 | int ret; |
| 1742 | |
| 1743 | device_init_wakeup(dev, false); |
| 1744 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1745 | ret = dwc3_resume_common(dwc, PMSG_AUTO_RESUME); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1746 | if (ret) |
| 1747 | return ret; |
| 1748 | |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1749 | switch (dwc->current_dr_role) { |
| 1750 | case DWC3_GCTL_PRTCAP_DEVICE: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1751 | dwc3_gadget_process_pending_events(dwc); |
| 1752 | break; |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1753 | case DWC3_GCTL_PRTCAP_HOST: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1754 | default: |
| 1755 | /* do nothing */ |
| 1756 | break; |
| 1757 | } |
| 1758 | |
| 1759 | pm_runtime_mark_last_busy(dev); |
| 1760 | |
| 1761 | return 0; |
| 1762 | } |
| 1763 | |
| 1764 | static int dwc3_runtime_idle(struct device *dev) |
| 1765 | { |
| 1766 | struct dwc3 *dwc = dev_get_drvdata(dev); |
| 1767 | |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1768 | switch (dwc->current_dr_role) { |
| 1769 | case DWC3_GCTL_PRTCAP_DEVICE: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1770 | if (dwc3_runtime_checks(dwc)) |
| 1771 | return -EBUSY; |
| 1772 | break; |
Manu Gautam | 689bf72 | 2017-09-27 16:49:20 +0530 | [diff] [blame] | 1773 | case DWC3_GCTL_PRTCAP_HOST: |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1774 | default: |
| 1775 | /* do nothing */ |
| 1776 | break; |
| 1777 | } |
| 1778 | |
| 1779 | pm_runtime_mark_last_busy(dev); |
| 1780 | pm_runtime_autosuspend(dev); |
| 1781 | |
| 1782 | return 0; |
| 1783 | } |
| 1784 | #endif /* CONFIG_PM */ |
| 1785 | |
| 1786 | #ifdef CONFIG_PM_SLEEP |
| 1787 | static int dwc3_suspend(struct device *dev) |
| 1788 | { |
| 1789 | struct dwc3 *dwc = dev_get_drvdata(dev); |
| 1790 | int ret; |
| 1791 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1792 | ret = dwc3_suspend_common(dwc, PMSG_SUSPEND); |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1793 | if (ret) |
| 1794 | return ret; |
| 1795 | |
Sekhar Nori | 6344475 | 2015-08-31 21:09:08 +0530 | [diff] [blame] | 1796 | pinctrl_pm_select_sleep_state(dev); |
| 1797 | |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1798 | return 0; |
| 1799 | } |
| 1800 | |
| 1801 | static int dwc3_resume(struct device *dev) |
| 1802 | { |
| 1803 | struct dwc3 *dwc = dev_get_drvdata(dev); |
Kishon Vijay Abraham I | 5730348 | 2014-03-03 17:08:11 +0530 | [diff] [blame] | 1804 | int ret; |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1805 | |
Sekhar Nori | 6344475 | 2015-08-31 21:09:08 +0530 | [diff] [blame] | 1806 | pinctrl_pm_select_default_state(dev); |
| 1807 | |
Manu Gautam | c4a5153 | 2018-01-18 16:54:30 +0530 | [diff] [blame] | 1808 | ret = dwc3_resume_common(dwc, PMSG_RESUME); |
Felipe Balbi | 51f5d49 | 2016-05-16 10:52:58 +0300 | [diff] [blame] | 1809 | if (ret) |
Felipe Balbi | 5c4ad318 | 2016-04-11 17:12:34 +0300 | [diff] [blame] | 1810 | return ret; |
| 1811 | |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1812 | pm_runtime_disable(dev); |
| 1813 | pm_runtime_set_active(dev); |
| 1814 | pm_runtime_enable(dev); |
| 1815 | |
| 1816 | return 0; |
| 1817 | } |
Felipe Balbi | 7f370ed | 2016-05-09 15:27:01 +0300 | [diff] [blame] | 1818 | #endif /* CONFIG_PM_SLEEP */ |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1819 | |
| 1820 | static const struct dev_pm_ops dwc3_dev_pm_ops = { |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1821 | SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume) |
Felipe Balbi | fc8bb91 | 2016-05-16 13:14:48 +0300 | [diff] [blame] | 1822 | SET_RUNTIME_PM_OPS(dwc3_runtime_suspend, dwc3_runtime_resume, |
| 1823 | dwc3_runtime_idle) |
Felipe Balbi | 7415f17 | 2012-04-30 14:56:33 +0300 | [diff] [blame] | 1824 | }; |
| 1825 | |
Kishon Vijay Abraham I | 5088b6f | 2013-01-25 16:36:53 +0530 | [diff] [blame] | 1826 | #ifdef CONFIG_OF |
| 1827 | static const struct of_device_id of_dwc3_match[] = { |
| 1828 | { |
Felipe Balbi | 22a5aa1 | 2013-07-02 21:20:24 +0300 | [diff] [blame] | 1829 | .compatible = "snps,dwc3" |
| 1830 | }, |
| 1831 | { |
Kishon Vijay Abraham I | 5088b6f | 2013-01-25 16:36:53 +0530 | [diff] [blame] | 1832 | .compatible = "synopsys,dwc3" |
| 1833 | }, |
| 1834 | { }, |
| 1835 | }; |
| 1836 | MODULE_DEVICE_TABLE(of, of_dwc3_match); |
| 1837 | #endif |
| 1838 | |
Heikki Krogerus | 404905a | 2014-09-25 10:57:02 +0300 | [diff] [blame] | 1839 | #ifdef CONFIG_ACPI |
| 1840 | |
| 1841 | #define ACPI_ID_INTEL_BSW "808622B7" |
| 1842 | |
| 1843 | static const struct acpi_device_id dwc3_acpi_match[] = { |
| 1844 | { ACPI_ID_INTEL_BSW, 0 }, |
| 1845 | { }, |
| 1846 | }; |
| 1847 | MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match); |
| 1848 | #endif |
| 1849 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1850 | static struct platform_driver dwc3_driver = { |
| 1851 | .probe = dwc3_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 1852 | .remove = dwc3_remove, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1853 | .driver = { |
| 1854 | .name = "dwc3", |
Kishon Vijay Abraham I | 5088b6f | 2013-01-25 16:36:53 +0530 | [diff] [blame] | 1855 | .of_match_table = of_match_ptr(of_dwc3_match), |
Heikki Krogerus | 404905a | 2014-09-25 10:57:02 +0300 | [diff] [blame] | 1856 | .acpi_match_table = ACPI_PTR(dwc3_acpi_match), |
Felipe Balbi | 7f370ed | 2016-05-09 15:27:01 +0300 | [diff] [blame] | 1857 | .pm = &dwc3_dev_pm_ops, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1858 | }, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1859 | }; |
| 1860 | |
Tobias Klauser | b1116dc | 2012-02-28 12:57:20 +0100 | [diff] [blame] | 1861 | module_platform_driver(dwc3_driver); |
| 1862 | |
Sebastian Andrzej Siewior | 7ae4fc4 | 2011-10-19 19:39:50 +0200 | [diff] [blame] | 1863 | MODULE_ALIAS("platform:dwc3"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1864 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
Felipe Balbi | 5945f78 | 2013-06-30 14:15:11 +0300 | [diff] [blame] | 1865 | MODULE_LICENSE("GPL v2"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1866 | MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); |