Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1 | /* ehci-msm2.c - HSUSB Host Controller Driver Implementation |
| 2 | * |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 3 | * Copyright (c) 2008-2013, The Linux Foundation. All rights reserved. |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 4 | * |
| 5 | * Partly derived from ehci-fsl.c and ehci-hcd.c |
| 6 | * Copyright (c) 2000-2004 by David Brownell |
| 7 | * Copyright (c) 2005 MontaVista Software |
| 8 | * |
| 9 | * All source code in this file is licensed under the following license except |
| 10 | * where indicated. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify it |
| 13 | * under the terms of the GNU General Public License version 2 as published |
| 14 | * by the Free Software Foundation. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 19 | * |
| 20 | * See the GNU General Public License for more details. |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, you can find it at http://www.fsf.org |
| 23 | */ |
| 24 | |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/clk.h> |
| 27 | #include <linux/err.h> |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 28 | #include <linux/pm_wakeup.h> |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 29 | #include <linux/pm_runtime.h> |
| 30 | #include <linux/regulator/consumer.h> |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 31 | #include <linux/gpio.h> |
| 32 | #include <linux/of_gpio.h> |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 33 | #include <linux/irq.h> |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 34 | |
| 35 | #include <linux/usb/ulpi.h> |
| 36 | #include <linux/usb/msm_hsusb_hw.h> |
| 37 | #include <linux/usb/msm_hsusb.h> |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 38 | #include <linux/of.h> |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 39 | #include <mach/clk.h> |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 40 | #include <mach/msm_xo.h> |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 41 | #include <mach/msm_iomap.h> |
Rajkumar Raghupathy | ad8d68e | 2013-06-06 17:48:39 +0530 | [diff] [blame] | 42 | #include <linux/debugfs.h> |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 43 | |
| 44 | #define MSM_USB_BASE (hcd->regs) |
| 45 | |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 46 | #define PDEV_NAME_LEN 20 |
| 47 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 48 | struct msm_hcd { |
| 49 | struct ehci_hcd ehci; |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 50 | spinlock_t wakeup_lock; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 51 | struct device *dev; |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 52 | struct clk *xo_clk; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 53 | struct clk *iface_clk; |
| 54 | struct clk *core_clk; |
| 55 | struct clk *alt_core_clk; |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 56 | struct clk *phy_sleep_clk; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 57 | struct regulator *hsusb_vddcx; |
| 58 | struct regulator *hsusb_3p3; |
| 59 | struct regulator *hsusb_1p8; |
| 60 | struct regulator *vbus; |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 61 | struct msm_xo_voter *xo_handle; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 62 | bool async_int; |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 63 | bool vbus_on; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 64 | atomic_t in_lpm; |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 65 | int pmic_gpio_dp_irq; |
| 66 | bool pmic_gpio_dp_irq_enabled; |
| 67 | uint32_t pmic_gpio_int_cnt; |
| 68 | atomic_t pm_usage_cnt; |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 69 | struct wakeup_source ws; |
Chiranjeevi Velempati | ce16958 | 2012-08-25 14:15:41 +0530 | [diff] [blame] | 70 | struct work_struct phy_susp_fail_work; |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 71 | int async_irq; |
| 72 | bool async_irq_enabled; |
| 73 | uint32_t async_int_cnt; |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 74 | int resume_gpio; |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 75 | |
| 76 | int wakeup_int_cnt; |
| 77 | bool wakeup_irq_enabled; |
| 78 | int wakeup_irq; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 79 | }; |
| 80 | |
| 81 | static inline struct msm_hcd *hcd_to_mhcd(struct usb_hcd *hcd) |
| 82 | { |
| 83 | return (struct msm_hcd *) (hcd->hcd_priv); |
| 84 | } |
| 85 | |
| 86 | static inline struct usb_hcd *mhcd_to_hcd(struct msm_hcd *mhcd) |
| 87 | { |
| 88 | return container_of((void *) mhcd, struct usb_hcd, hcd_priv); |
| 89 | } |
| 90 | |
| 91 | #define HSUSB_PHY_3P3_VOL_MIN 3050000 /* uV */ |
| 92 | #define HSUSB_PHY_3P3_VOL_MAX 3300000 /* uV */ |
| 93 | #define HSUSB_PHY_3P3_HPM_LOAD 50000 /* uA */ |
| 94 | |
| 95 | #define HSUSB_PHY_1P8_VOL_MIN 1800000 /* uV */ |
| 96 | #define HSUSB_PHY_1P8_VOL_MAX 1800000 /* uV */ |
| 97 | #define HSUSB_PHY_1P8_HPM_LOAD 50000 /* uA */ |
| 98 | |
| 99 | #define HSUSB_PHY_VDD_DIG_VOL_MIN 1045000 /* uV */ |
| 100 | #define HSUSB_PHY_VDD_DIG_VOL_MAX 1320000 /* uV */ |
| 101 | #define HSUSB_PHY_VDD_DIG_LOAD 49360 /* uA */ |
| 102 | |
| 103 | static int msm_ehci_init_vddcx(struct msm_hcd *mhcd, int init) |
| 104 | { |
| 105 | int ret = 0; |
| 106 | |
| 107 | if (!init) |
| 108 | goto disable_reg; |
| 109 | |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 110 | mhcd->hsusb_vddcx = devm_regulator_get(mhcd->dev, "HSUSB_VDDCX"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 111 | if (IS_ERR(mhcd->hsusb_vddcx)) { |
| 112 | dev_err(mhcd->dev, "unable to get ehci vddcx\n"); |
| 113 | return PTR_ERR(mhcd->hsusb_vddcx); |
| 114 | } |
| 115 | |
| 116 | ret = regulator_set_voltage(mhcd->hsusb_vddcx, |
| 117 | HSUSB_PHY_VDD_DIG_VOL_MIN, |
| 118 | HSUSB_PHY_VDD_DIG_VOL_MAX); |
| 119 | if (ret) { |
| 120 | dev_err(mhcd->dev, "unable to set the voltage" |
| 121 | "for ehci vddcx\n"); |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 122 | return ret; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | ret = regulator_set_optimum_mode(mhcd->hsusb_vddcx, |
| 126 | HSUSB_PHY_VDD_DIG_LOAD); |
| 127 | if (ret < 0) { |
| 128 | dev_err(mhcd->dev, "%s: Unable to set optimum mode of the" |
| 129 | " regulator: VDDCX\n", __func__); |
| 130 | goto reg_optimum_mode_err; |
| 131 | } |
| 132 | |
| 133 | ret = regulator_enable(mhcd->hsusb_vddcx); |
| 134 | if (ret) { |
| 135 | dev_err(mhcd->dev, "unable to enable ehci vddcx\n"); |
| 136 | goto reg_enable_err; |
| 137 | } |
| 138 | |
| 139 | return 0; |
| 140 | |
| 141 | disable_reg: |
| 142 | regulator_disable(mhcd->hsusb_vddcx); |
| 143 | reg_enable_err: |
| 144 | regulator_set_optimum_mode(mhcd->hsusb_vddcx, 0); |
| 145 | reg_optimum_mode_err: |
| 146 | regulator_set_voltage(mhcd->hsusb_vddcx, 0, |
| 147 | HSUSB_PHY_VDD_DIG_VOL_MIN); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 148 | return ret; |
| 149 | |
| 150 | } |
| 151 | |
| 152 | static int msm_ehci_ldo_init(struct msm_hcd *mhcd, int init) |
| 153 | { |
| 154 | int rc = 0; |
| 155 | |
| 156 | if (!init) |
| 157 | goto put_1p8; |
| 158 | |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 159 | mhcd->hsusb_3p3 = devm_regulator_get(mhcd->dev, "HSUSB_3p3"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 160 | if (IS_ERR(mhcd->hsusb_3p3)) { |
| 161 | dev_err(mhcd->dev, "unable to get hsusb 3p3\n"); |
| 162 | return PTR_ERR(mhcd->hsusb_3p3); |
| 163 | } |
| 164 | |
| 165 | rc = regulator_set_voltage(mhcd->hsusb_3p3, |
| 166 | HSUSB_PHY_3P3_VOL_MIN, HSUSB_PHY_3P3_VOL_MAX); |
| 167 | if (rc) { |
| 168 | dev_err(mhcd->dev, "unable to set voltage level for" |
| 169 | "hsusb 3p3\n"); |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 170 | return rc; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 171 | } |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 172 | mhcd->hsusb_1p8 = devm_regulator_get(mhcd->dev, "HSUSB_1p8"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 173 | if (IS_ERR(mhcd->hsusb_1p8)) { |
| 174 | dev_err(mhcd->dev, "unable to get hsusb 1p8\n"); |
| 175 | rc = PTR_ERR(mhcd->hsusb_1p8); |
| 176 | goto put_3p3_lpm; |
| 177 | } |
| 178 | rc = regulator_set_voltage(mhcd->hsusb_1p8, |
| 179 | HSUSB_PHY_1P8_VOL_MIN, HSUSB_PHY_1P8_VOL_MAX); |
| 180 | if (rc) { |
| 181 | dev_err(mhcd->dev, "unable to set voltage level for" |
| 182 | "hsusb 1p8\n"); |
| 183 | goto put_1p8; |
| 184 | } |
| 185 | |
| 186 | return 0; |
| 187 | |
| 188 | put_1p8: |
| 189 | regulator_set_voltage(mhcd->hsusb_1p8, 0, HSUSB_PHY_1P8_VOL_MAX); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 190 | put_3p3_lpm: |
| 191 | regulator_set_voltage(mhcd->hsusb_3p3, 0, HSUSB_PHY_3P3_VOL_MAX); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 192 | |
| 193 | return rc; |
| 194 | } |
| 195 | |
| 196 | #ifdef CONFIG_PM_SLEEP |
Hemant Kumar | 441356be | 2012-02-13 16:12:49 -0800 | [diff] [blame] | 197 | #define HSUSB_PHY_SUSP_DIG_VOL_P50 500000 |
| 198 | #define HSUSB_PHY_SUSP_DIG_VOL_P75 750000 |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 199 | static int msm_ehci_config_vddcx(struct msm_hcd *mhcd, int high) |
| 200 | { |
Hemant Kumar | 441356be | 2012-02-13 16:12:49 -0800 | [diff] [blame] | 201 | struct msm_usb_host_platform_data *pdata; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 202 | int max_vol = HSUSB_PHY_VDD_DIG_VOL_MAX; |
| 203 | int min_vol; |
| 204 | int ret; |
| 205 | |
Hemant Kumar | 441356be | 2012-02-13 16:12:49 -0800 | [diff] [blame] | 206 | pdata = mhcd->dev->platform_data; |
| 207 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 208 | if (high) |
| 209 | min_vol = HSUSB_PHY_VDD_DIG_VOL_MIN; |
Hemant Kumar | 441356be | 2012-02-13 16:12:49 -0800 | [diff] [blame] | 210 | else if (pdata && pdata->dock_connect_irq && |
| 211 | !irq_read_line(pdata->dock_connect_irq)) |
| 212 | min_vol = HSUSB_PHY_SUSP_DIG_VOL_P75; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 213 | else |
Hemant Kumar | 441356be | 2012-02-13 16:12:49 -0800 | [diff] [blame] | 214 | min_vol = HSUSB_PHY_SUSP_DIG_VOL_P50; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 215 | |
| 216 | ret = regulator_set_voltage(mhcd->hsusb_vddcx, min_vol, max_vol); |
| 217 | if (ret) { |
| 218 | dev_err(mhcd->dev, "%s: unable to set the voltage of regulator" |
| 219 | " HSUSB_VDDCX\n", __func__); |
| 220 | return ret; |
| 221 | } |
| 222 | |
| 223 | dev_dbg(mhcd->dev, "%s: min_vol:%d max_vol:%d\n", __func__, min_vol, |
| 224 | max_vol); |
| 225 | |
| 226 | return ret; |
| 227 | } |
| 228 | #else |
| 229 | static int msm_ehci_config_vddcx(struct msm_hcd *mhcd, int high) |
| 230 | { |
| 231 | return 0; |
| 232 | } |
| 233 | #endif |
| 234 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 235 | static void msm_ehci_vbus_power(struct msm_hcd *mhcd, bool on) |
| 236 | { |
| 237 | int ret; |
| 238 | |
| 239 | if (!mhcd->vbus) { |
| 240 | pr_err("vbus is NULL."); |
| 241 | return; |
| 242 | } |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 243 | |
| 244 | if (mhcd->vbus_on == on) |
| 245 | return; |
| 246 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 247 | if (on) { |
| 248 | ret = regulator_enable(mhcd->vbus); |
| 249 | if (ret) { |
| 250 | pr_err("unable to enable vbus\n"); |
| 251 | return; |
| 252 | } |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 253 | mhcd->vbus_on = true; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 254 | } else { |
| 255 | ret = regulator_disable(mhcd->vbus); |
| 256 | if (ret) { |
| 257 | pr_err("unable to disable vbus\n"); |
| 258 | return; |
| 259 | } |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 260 | mhcd->vbus_on = false; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 261 | } |
| 262 | } |
| 263 | |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 264 | static irqreturn_t msm_ehci_dock_connect_irq(int irq, void *data) |
| 265 | { |
| 266 | const struct msm_usb_host_platform_data *pdata; |
| 267 | struct msm_hcd *mhcd = data; |
| 268 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 269 | |
| 270 | pdata = mhcd->dev->platform_data; |
| 271 | |
| 272 | if (atomic_read(&mhcd->in_lpm)) |
| 273 | usb_hcd_resume_root_hub(hcd); |
| 274 | |
| 275 | if (irq_read_line(pdata->dock_connect_irq)) { |
| 276 | dev_dbg(mhcd->dev, "%s:Dock removed disable vbus\n", __func__); |
| 277 | msm_ehci_vbus_power(mhcd, 0); |
| 278 | } else { |
| 279 | dev_dbg(mhcd->dev, "%s:Dock connected enable vbus\n", __func__); |
| 280 | msm_ehci_vbus_power(mhcd, 1); |
| 281 | } |
| 282 | |
| 283 | return IRQ_HANDLED; |
| 284 | } |
| 285 | |
| 286 | static int msm_ehci_init_vbus(struct msm_hcd *mhcd, int init) |
| 287 | { |
| 288 | int rc = 0; |
| 289 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 290 | const struct msm_usb_host_platform_data *pdata; |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 291 | int ret = 0; |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 292 | |
| 293 | pdata = mhcd->dev->platform_data; |
| 294 | |
| 295 | if (!init) { |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 296 | if (pdata && pdata->dock_connect_irq) |
| 297 | free_irq(pdata->dock_connect_irq, mhcd); |
| 298 | return rc; |
| 299 | } |
| 300 | |
Mayank Rana | 2f416c2 | 2012-03-24 05:23:25 +0530 | [diff] [blame] | 301 | mhcd->vbus = devm_regulator_get(mhcd->dev, "vbus"); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 302 | ret = PTR_ERR(mhcd->vbus); |
| 303 | if (ret == -EPROBE_DEFER) { |
| 304 | pr_debug("failed to get vbus handle, defer probe\n"); |
| 305 | return ret; |
| 306 | } else if (IS_ERR(mhcd->vbus)) { |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 307 | pr_err("Unable to get vbus\n"); |
| 308 | return -ENODEV; |
| 309 | } |
| 310 | |
| 311 | if (pdata) { |
| 312 | hcd->power_budget = pdata->power_budget; |
| 313 | |
| 314 | if (pdata->dock_connect_irq) { |
| 315 | rc = request_threaded_irq(pdata->dock_connect_irq, NULL, |
| 316 | msm_ehci_dock_connect_irq, |
| 317 | IRQF_TRIGGER_FALLING | |
| 318 | IRQF_TRIGGER_RISING | |
| 319 | IRQF_ONESHOT, "msm_ehci_host", mhcd); |
| 320 | if (!rc) |
| 321 | enable_irq_wake(pdata->dock_connect_irq); |
| 322 | } |
| 323 | } |
| 324 | return rc; |
| 325 | } |
| 326 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 327 | static int msm_ehci_ldo_enable(struct msm_hcd *mhcd, int on) |
| 328 | { |
| 329 | int ret = 0; |
| 330 | |
| 331 | if (IS_ERR(mhcd->hsusb_1p8)) { |
| 332 | dev_err(mhcd->dev, "%s: HSUSB_1p8 is not initialized\n", |
| 333 | __func__); |
| 334 | return -ENODEV; |
| 335 | } |
| 336 | |
| 337 | if (IS_ERR(mhcd->hsusb_3p3)) { |
| 338 | dev_err(mhcd->dev, "%s: HSUSB_3p3 is not initialized\n", |
| 339 | __func__); |
| 340 | return -ENODEV; |
| 341 | } |
| 342 | |
| 343 | if (on) { |
| 344 | ret = regulator_set_optimum_mode(mhcd->hsusb_1p8, |
| 345 | HSUSB_PHY_1P8_HPM_LOAD); |
| 346 | if (ret < 0) { |
| 347 | dev_err(mhcd->dev, "%s: Unable to set HPM of the" |
| 348 | " regulator: HSUSB_1p8\n", __func__); |
| 349 | return ret; |
| 350 | } |
| 351 | |
| 352 | ret = regulator_enable(mhcd->hsusb_1p8); |
| 353 | if (ret) { |
| 354 | dev_err(mhcd->dev, "%s: unable to enable the hsusb" |
| 355 | " 1p8\n", __func__); |
| 356 | regulator_set_optimum_mode(mhcd->hsusb_1p8, 0); |
| 357 | return ret; |
| 358 | } |
| 359 | |
| 360 | ret = regulator_set_optimum_mode(mhcd->hsusb_3p3, |
| 361 | HSUSB_PHY_3P3_HPM_LOAD); |
| 362 | if (ret < 0) { |
| 363 | dev_err(mhcd->dev, "%s: Unable to set HPM of the " |
| 364 | "regulator: HSUSB_3p3\n", __func__); |
| 365 | regulator_set_optimum_mode(mhcd->hsusb_1p8, 0); |
| 366 | regulator_disable(mhcd->hsusb_1p8); |
| 367 | return ret; |
| 368 | } |
| 369 | |
| 370 | ret = regulator_enable(mhcd->hsusb_3p3); |
| 371 | if (ret) { |
| 372 | dev_err(mhcd->dev, "%s: unable to enable the " |
| 373 | "hsusb 3p3\n", __func__); |
| 374 | regulator_set_optimum_mode(mhcd->hsusb_3p3, 0); |
| 375 | regulator_set_optimum_mode(mhcd->hsusb_1p8, 0); |
| 376 | regulator_disable(mhcd->hsusb_1p8); |
| 377 | return ret; |
| 378 | } |
| 379 | |
| 380 | } else { |
| 381 | ret = regulator_disable(mhcd->hsusb_1p8); |
| 382 | if (ret) { |
| 383 | dev_err(mhcd->dev, "%s: unable to disable the " |
| 384 | "hsusb 1p8\n", __func__); |
| 385 | return ret; |
| 386 | } |
| 387 | |
| 388 | ret = regulator_set_optimum_mode(mhcd->hsusb_1p8, 0); |
| 389 | if (ret < 0) |
| 390 | dev_err(mhcd->dev, "%s: Unable to set LPM of the " |
| 391 | "regulator: HSUSB_1p8\n", __func__); |
| 392 | |
| 393 | ret = regulator_disable(mhcd->hsusb_3p3); |
| 394 | if (ret) { |
| 395 | dev_err(mhcd->dev, "%s: unable to disable the " |
| 396 | "hsusb 3p3\n", __func__); |
| 397 | return ret; |
| 398 | } |
| 399 | ret = regulator_set_optimum_mode(mhcd->hsusb_3p3, 0); |
| 400 | if (ret < 0) |
| 401 | dev_err(mhcd->dev, "%s: Unable to set LPM of the " |
| 402 | "regulator: HSUSB_3p3\n", __func__); |
| 403 | } |
| 404 | |
| 405 | dev_dbg(mhcd->dev, "reg (%s)\n", on ? "HPM" : "LPM"); |
| 406 | |
| 407 | return ret < 0 ? ret : 0; |
| 408 | } |
| 409 | |
| 410 | |
| 411 | #define ULPI_IO_TIMEOUT_USECS (10 * 1000) |
| 412 | static int msm_ulpi_read(struct msm_hcd *mhcd, u32 reg) |
| 413 | { |
| 414 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 415 | unsigned long timeout; |
| 416 | |
| 417 | /* initiate read operation */ |
| 418 | writel_relaxed(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), |
| 419 | USB_ULPI_VIEWPORT); |
| 420 | |
| 421 | /* wait for completion */ |
| 422 | timeout = jiffies + usecs_to_jiffies(ULPI_IO_TIMEOUT_USECS); |
| 423 | while (readl_relaxed(USB_ULPI_VIEWPORT) & ULPI_RUN) { |
| 424 | if (time_after(jiffies, timeout)) { |
| 425 | dev_err(mhcd->dev, "msm_ulpi_read: timeout %08x\n", |
| 426 | readl_relaxed(USB_ULPI_VIEWPORT)); |
| 427 | return -ETIMEDOUT; |
| 428 | } |
| 429 | udelay(1); |
| 430 | } |
| 431 | |
| 432 | return ULPI_DATA_READ(readl_relaxed(USB_ULPI_VIEWPORT)); |
| 433 | } |
| 434 | |
| 435 | |
| 436 | static int msm_ulpi_write(struct msm_hcd *mhcd, u32 val, u32 reg) |
| 437 | { |
| 438 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 439 | unsigned long timeout; |
| 440 | |
| 441 | /* initiate write operation */ |
| 442 | writel_relaxed(ULPI_RUN | ULPI_WRITE | |
| 443 | ULPI_ADDR(reg) | ULPI_DATA(val), |
| 444 | USB_ULPI_VIEWPORT); |
| 445 | |
| 446 | /* wait for completion */ |
| 447 | timeout = jiffies + usecs_to_jiffies(ULPI_IO_TIMEOUT_USECS); |
| 448 | while (readl_relaxed(USB_ULPI_VIEWPORT) & ULPI_RUN) { |
| 449 | if (time_after(jiffies, timeout)) { |
| 450 | dev_err(mhcd->dev, "msm_ulpi_write: timeout\n"); |
| 451 | return -ETIMEDOUT; |
| 452 | } |
| 453 | udelay(1); |
| 454 | } |
| 455 | |
| 456 | return 0; |
| 457 | } |
| 458 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 459 | /** |
| 460 | * Do hard reset to USB hardware block using one of reset methodology based |
| 461 | * on availablity of alt_core_clk. There are two kinds of hardware resets. |
| 462 | * 1. Conventional synchronous reset where clocks to blocks to be ON while |
| 463 | * issuing the reset. 2. Asynchronous reset which requires clocks to be OFF. |
| 464 | */ |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 465 | static int msm_ehci_link_clk_reset(struct msm_hcd *mhcd, bool assert) |
| 466 | { |
| 467 | int ret; |
| 468 | |
| 469 | if (assert) { |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 470 | if (!IS_ERR(mhcd->alt_core_clk)) { |
| 471 | ret = clk_reset(mhcd->alt_core_clk, CLK_RESET_ASSERT); |
| 472 | } else { |
| 473 | /* Using asynchronous block reset to the hardware */ |
| 474 | clk_disable(mhcd->iface_clk); |
| 475 | clk_disable(mhcd->core_clk); |
| 476 | ret = clk_reset(mhcd->core_clk, CLK_RESET_ASSERT); |
| 477 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 478 | if (ret) |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 479 | dev_err(mhcd->dev, "usb clk assert failed\n"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 480 | } else { |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 481 | if (!IS_ERR(mhcd->alt_core_clk)) { |
| 482 | ret = clk_reset(mhcd->alt_core_clk, CLK_RESET_DEASSERT); |
| 483 | } else { |
| 484 | ret = clk_reset(mhcd->core_clk, CLK_RESET_DEASSERT); |
| 485 | ndelay(200); |
| 486 | clk_enable(mhcd->core_clk); |
| 487 | clk_enable(mhcd->iface_clk); |
| 488 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 489 | if (ret) |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 490 | dev_err(mhcd->dev, "usb clk deassert failed\n"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | return ret; |
| 494 | } |
| 495 | |
| 496 | static int msm_ehci_phy_reset(struct msm_hcd *mhcd) |
| 497 | { |
| 498 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 499 | struct msm_usb_host_platform_data *pdata; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 500 | u32 val; |
| 501 | int ret; |
| 502 | int retries; |
| 503 | |
| 504 | ret = msm_ehci_link_clk_reset(mhcd, 1); |
| 505 | if (ret) |
| 506 | return ret; |
| 507 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 508 | usleep_range(10, 12); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 509 | |
| 510 | ret = msm_ehci_link_clk_reset(mhcd, 0); |
| 511 | if (ret) |
| 512 | return ret; |
| 513 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 514 | pdata = mhcd->dev->platform_data; |
| 515 | if (pdata && pdata->use_sec_phy) |
| 516 | /* select secondary phy if offset is set for USB operation */ |
| 517 | writel_relaxed(readl_relaxed(USB_PHY_CTRL2) | (1<<16), |
| 518 | USB_PHY_CTRL2); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 519 | val = readl_relaxed(USB_PORTSC) & ~PORTSC_PTS_MASK; |
| 520 | writel_relaxed(val | PORTSC_PTS_ULPI, USB_PORTSC); |
| 521 | |
| 522 | for (retries = 3; retries > 0; retries--) { |
| 523 | ret = msm_ulpi_write(mhcd, ULPI_FUNC_CTRL_SUSPENDM, |
| 524 | ULPI_CLR(ULPI_FUNC_CTRL)); |
| 525 | if (!ret) |
| 526 | break; |
| 527 | } |
| 528 | if (!retries) |
| 529 | return -ETIMEDOUT; |
| 530 | |
| 531 | /* Wakeup the PHY with a reg-access for calibration */ |
| 532 | for (retries = 3; retries > 0; retries--) { |
| 533 | ret = msm_ulpi_read(mhcd, ULPI_DEBUG); |
| 534 | if (ret != -ETIMEDOUT) |
| 535 | break; |
| 536 | } |
| 537 | if (!retries) |
| 538 | return -ETIMEDOUT; |
| 539 | |
| 540 | dev_info(mhcd->dev, "phy_reset: success\n"); |
| 541 | |
| 542 | return 0; |
| 543 | } |
| 544 | |
| 545 | #define LINK_RESET_TIMEOUT_USEC (250 * 1000) |
| 546 | static int msm_hsusb_reset(struct msm_hcd *mhcd) |
| 547 | { |
| 548 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 549 | struct msm_usb_host_platform_data *pdata; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 550 | unsigned long timeout; |
| 551 | int ret; |
| 552 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 553 | if (!IS_ERR(mhcd->alt_core_clk)) |
| 554 | clk_prepare_enable(mhcd->alt_core_clk); |
| 555 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 556 | ret = msm_ehci_phy_reset(mhcd); |
| 557 | if (ret) { |
| 558 | dev_err(mhcd->dev, "phy_reset failed\n"); |
| 559 | return ret; |
| 560 | } |
| 561 | |
| 562 | writel_relaxed(USBCMD_RESET, USB_USBCMD); |
| 563 | |
| 564 | timeout = jiffies + usecs_to_jiffies(LINK_RESET_TIMEOUT_USEC); |
| 565 | while (readl_relaxed(USB_USBCMD) & USBCMD_RESET) { |
| 566 | if (time_after(jiffies, timeout)) |
| 567 | return -ETIMEDOUT; |
| 568 | udelay(1); |
| 569 | } |
| 570 | |
| 571 | /* select ULPI phy */ |
| 572 | writel_relaxed(0x80000000, USB_PORTSC); |
| 573 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 574 | pdata = mhcd->dev->platform_data; |
| 575 | if (pdata && pdata->use_sec_phy) |
| 576 | writel_relaxed(readl_relaxed(USB_PHY_CTRL2) | (1<<16), |
| 577 | USB_PHY_CTRL2); |
| 578 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 579 | msleep(100); |
| 580 | |
| 581 | writel_relaxed(0x0, USB_AHBBURST); |
Vijayavardhan Vennapusa | 5f32d7a | 2012-03-14 16:30:26 +0530 | [diff] [blame] | 582 | writel_relaxed(0x08, USB_AHBMODE); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 583 | |
| 584 | /* Ensure that RESET operation is completed before turning off clock */ |
| 585 | mb(); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 586 | |
| 587 | if (!IS_ERR(mhcd->alt_core_clk)) |
| 588 | clk_disable_unprepare(mhcd->alt_core_clk); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 589 | |
| 590 | /*rising edge interrupts with Dp rise and fall enabled*/ |
| 591 | msm_ulpi_write(mhcd, ULPI_INT_DP, ULPI_USB_INT_EN_RISE); |
| 592 | msm_ulpi_write(mhcd, ULPI_INT_DP, ULPI_USB_INT_EN_FALL); |
| 593 | |
| 594 | /*Clear the PHY interrupts by reading the PHY interrupt latch register*/ |
| 595 | msm_ulpi_read(mhcd, ULPI_USB_INT_LATCH); |
| 596 | |
| 597 | return 0; |
| 598 | } |
| 599 | |
Chiranjeevi Velempati | ce16958 | 2012-08-25 14:15:41 +0530 | [diff] [blame] | 600 | static void msm_ehci_phy_susp_fail_work(struct work_struct *w) |
| 601 | { |
| 602 | struct msm_hcd *mhcd = container_of(w, struct msm_hcd, |
| 603 | phy_susp_fail_work); |
| 604 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 605 | |
| 606 | msm_ehci_vbus_power(mhcd, 0); |
| 607 | usb_remove_hcd(hcd); |
| 608 | msm_hsusb_reset(mhcd); |
| 609 | usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); |
| 610 | msm_ehci_vbus_power(mhcd, 1); |
| 611 | } |
| 612 | |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 613 | #define PHY_SUSP_TIMEOUT_MSEC 500 |
| 614 | #define PHY_RESUME_TIMEOUT_USEC (100 * 1000) |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 615 | |
| 616 | #ifdef CONFIG_PM_SLEEP |
| 617 | static int msm_ehci_suspend(struct msm_hcd *mhcd) |
| 618 | { |
| 619 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 620 | unsigned long timeout; |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 621 | int ret; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 622 | u32 portsc; |
| 623 | |
| 624 | if (atomic_read(&mhcd->in_lpm)) { |
| 625 | dev_dbg(mhcd->dev, "%s called in lpm\n", __func__); |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | disable_irq(hcd->irq); |
| 630 | |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 631 | /* make sure we don't race against a remote wakeup */ |
| 632 | if (test_bit(HCD_FLAG_WAKEUP_PENDING, &hcd->flags) || |
| 633 | readl_relaxed(USB_PORTSC) & PORT_RESUME) { |
| 634 | dev_dbg(mhcd->dev, "wakeup pending, aborting suspend\n"); |
| 635 | enable_irq(hcd->irq); |
| 636 | return -EBUSY; |
| 637 | } |
| 638 | |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 639 | /* If port is enabled wait 5ms for PHCD to come up. Reset PHY |
| 640 | * and link if it fails to do so. |
| 641 | * If port is not enabled set the PHCD bit and poll for it to |
| 642 | * come up with in 500ms. Reset phy and link if it fails to do so. |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 643 | */ |
| 644 | portsc = readl_relaxed(USB_PORTSC); |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 645 | if (portsc & PORT_PE) { |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 646 | |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 647 | usleep_range(5000, 5000); |
| 648 | |
| 649 | if (!(readl_relaxed(USB_PORTSC) & PORTSC_PHCD)) { |
| 650 | dev_err(mhcd->dev, |
| 651 | "Unable to suspend PHY. portsc: %8x\n", |
| 652 | readl_relaxed(USB_PORTSC)); |
| 653 | goto reset_phy_and_link; |
| 654 | } |
| 655 | } else { |
| 656 | writel_relaxed(portsc | PORTSC_PHCD, USB_PORTSC); |
| 657 | |
| 658 | timeout = jiffies + msecs_to_jiffies(PHY_SUSP_TIMEOUT_MSEC); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 659 | while (!(readl_relaxed(USB_PORTSC) & PORTSC_PHCD)) { |
| 660 | if (time_after(jiffies, timeout)) { |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 661 | dev_err(mhcd->dev, |
| 662 | "Unable to suspend PHY. portsc: %8x\n", |
| 663 | readl_relaxed(USB_PORTSC)); |
| 664 | goto reset_phy_and_link; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 665 | } |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 666 | usleep_range(10000, 10000); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 667 | } |
| 668 | } |
| 669 | |
| 670 | /* |
| 671 | * PHY has capability to generate interrupt asynchronously in low |
| 672 | * power mode (LPM). This interrupt is level triggered. So USB IRQ |
| 673 | * line must be disabled till async interrupt enable bit is cleared |
| 674 | * in USBCMD register. Assert STP (ULPI interface STOP signal) to |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 675 | * block data communication from PHY. Enable asynchronous interrupt |
| 676 | * only when wakeup gpio IRQ is not present. |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 677 | */ |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 678 | if (mhcd->wakeup_irq) |
| 679 | writel_relaxed(readl_relaxed(USB_USBCMD) | ULPI_STP_CTRL, |
| 680 | USB_USBCMD); |
| 681 | else |
| 682 | writel_relaxed(readl_relaxed(USB_USBCMD) | ASYNC_INTR_CTRL | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 683 | ULPI_STP_CTRL, USB_USBCMD); |
| 684 | |
| 685 | /* |
| 686 | * Ensure that hardware is put in low power mode before |
| 687 | * clocks are turned OFF and VDD is allowed to minimize. |
| 688 | */ |
| 689 | mb(); |
| 690 | |
| 691 | clk_disable_unprepare(mhcd->iface_clk); |
| 692 | clk_disable_unprepare(mhcd->core_clk); |
| 693 | |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 694 | /* usb phy does not require TCXO clock, hence vote for TCXO disable */ |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 695 | if (!IS_ERR(mhcd->xo_clk)) { |
| 696 | clk_disable_unprepare(mhcd->xo_clk); |
| 697 | } else { |
| 698 | ret = msm_xo_mode_vote(mhcd->xo_handle, MSM_XO_MODE_OFF); |
| 699 | if (ret) |
| 700 | dev_err(mhcd->dev, "%s failed to devote for TCXO %d\n", |
| 701 | __func__, ret); |
| 702 | } |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 703 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 704 | msm_ehci_config_vddcx(mhcd, 0); |
| 705 | |
| 706 | atomic_set(&mhcd->in_lpm, 1); |
| 707 | enable_irq(hcd->irq); |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 708 | |
| 709 | if (mhcd->wakeup_irq) { |
| 710 | mhcd->wakeup_irq_enabled = 1; |
| 711 | enable_irq_wake(mhcd->wakeup_irq); |
| 712 | enable_irq(mhcd->wakeup_irq); |
| 713 | } |
| 714 | |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 715 | if (mhcd->pmic_gpio_dp_irq) { |
| 716 | mhcd->pmic_gpio_dp_irq_enabled = 1; |
| 717 | enable_irq_wake(mhcd->pmic_gpio_dp_irq); |
| 718 | enable_irq(mhcd->pmic_gpio_dp_irq); |
| 719 | } |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 720 | if (mhcd->async_irq) { |
| 721 | mhcd->async_irq_enabled = 1; |
| 722 | enable_irq_wake(mhcd->async_irq); |
| 723 | enable_irq(mhcd->async_irq); |
| 724 | } |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 725 | pm_relax(mhcd->dev); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 726 | |
| 727 | dev_info(mhcd->dev, "EHCI USB in low power mode\n"); |
| 728 | |
| 729 | return 0; |
Hemant Kumar | 8d3aca3 | 2013-06-05 18:53:54 -0700 | [diff] [blame^] | 730 | |
| 731 | reset_phy_and_link: |
| 732 | schedule_work(&mhcd->phy_susp_fail_work); |
| 733 | return -ETIMEDOUT; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 734 | } |
| 735 | |
| 736 | static int msm_ehci_resume(struct msm_hcd *mhcd) |
| 737 | { |
| 738 | struct usb_hcd *hcd = mhcd_to_hcd(mhcd); |
| 739 | unsigned long timeout; |
| 740 | unsigned temp; |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 741 | int ret; |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 742 | unsigned long flags; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 743 | |
| 744 | if (!atomic_read(&mhcd->in_lpm)) { |
| 745 | dev_dbg(mhcd->dev, "%s called in !in_lpm\n", __func__); |
| 746 | return 0; |
| 747 | } |
| 748 | |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 749 | if (mhcd->pmic_gpio_dp_irq_enabled) { |
| 750 | disable_irq_wake(mhcd->pmic_gpio_dp_irq); |
| 751 | disable_irq_nosync(mhcd->pmic_gpio_dp_irq); |
| 752 | mhcd->pmic_gpio_dp_irq_enabled = 0; |
| 753 | } |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 754 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 755 | spin_lock_irqsave(&mhcd->wakeup_lock, flags); |
| 756 | if (mhcd->async_irq_enabled) { |
| 757 | disable_irq_wake(mhcd->async_irq); |
| 758 | disable_irq_nosync(mhcd->async_irq); |
| 759 | mhcd->async_irq_enabled = 0; |
| 760 | } |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 761 | |
| 762 | if (mhcd->wakeup_irq) { |
| 763 | if (mhcd->wakeup_irq_enabled) { |
| 764 | disable_irq_wake(mhcd->wakeup_irq); |
| 765 | disable_irq_nosync(mhcd->wakeup_irq); |
| 766 | mhcd->wakeup_irq_enabled = 0; |
| 767 | } |
| 768 | } |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 769 | spin_unlock_irqrestore(&mhcd->wakeup_lock, flags); |
| 770 | |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 771 | pm_stay_awake(mhcd->dev); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 772 | |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 773 | /* Vote for TCXO when waking up the phy */ |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 774 | if (!IS_ERR(mhcd->xo_clk)) { |
| 775 | clk_prepare_enable(mhcd->xo_clk); |
| 776 | } else { |
| 777 | ret = msm_xo_mode_vote(mhcd->xo_handle, MSM_XO_MODE_ON); |
| 778 | if (ret) |
| 779 | dev_err(mhcd->dev, "%s failed to vote for TCXO D0 %d\n", |
| 780 | __func__, ret); |
| 781 | } |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 782 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 783 | clk_prepare_enable(mhcd->core_clk); |
| 784 | clk_prepare_enable(mhcd->iface_clk); |
| 785 | |
| 786 | msm_ehci_config_vddcx(mhcd, 1); |
| 787 | |
| 788 | temp = readl_relaxed(USB_USBCMD); |
| 789 | temp &= ~ASYNC_INTR_CTRL; |
| 790 | temp &= ~ULPI_STP_CTRL; |
| 791 | writel_relaxed(temp, USB_USBCMD); |
| 792 | |
| 793 | if (!(readl_relaxed(USB_PORTSC) & PORTSC_PHCD)) |
| 794 | goto skip_phy_resume; |
| 795 | |
| 796 | temp = readl_relaxed(USB_PORTSC) & ~PORTSC_PHCD; |
| 797 | writel_relaxed(temp, USB_PORTSC); |
| 798 | |
| 799 | timeout = jiffies + usecs_to_jiffies(PHY_RESUME_TIMEOUT_USEC); |
| 800 | while ((readl_relaxed(USB_PORTSC) & PORTSC_PHCD) || |
| 801 | !(readl_relaxed(USB_ULPI_VIEWPORT) & ULPI_SYNC_STATE)) { |
| 802 | if (time_after(jiffies, timeout)) { |
| 803 | /*This is a fatal error. Reset the link and PHY*/ |
| 804 | dev_err(mhcd->dev, "Unable to resume USB. Resetting the h/w\n"); |
| 805 | msm_hsusb_reset(mhcd); |
| 806 | break; |
| 807 | } |
| 808 | udelay(1); |
| 809 | } |
| 810 | |
| 811 | skip_phy_resume: |
| 812 | |
Chiranjeevi Velempati | 35d46ab | 2012-07-18 20:36:53 +0530 | [diff] [blame] | 813 | usb_hcd_resume_root_hub(hcd); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 814 | atomic_set(&mhcd->in_lpm, 0); |
| 815 | |
| 816 | if (mhcd->async_int) { |
| 817 | mhcd->async_int = false; |
| 818 | pm_runtime_put_noidle(mhcd->dev); |
| 819 | enable_irq(hcd->irq); |
| 820 | } |
| 821 | |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 822 | if (atomic_read(&mhcd->pm_usage_cnt)) { |
| 823 | atomic_set(&mhcd->pm_usage_cnt, 0); |
| 824 | pm_runtime_put_noidle(mhcd->dev); |
| 825 | } |
| 826 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 827 | dev_info(mhcd->dev, "EHCI USB exited from low power mode\n"); |
| 828 | |
| 829 | return 0; |
| 830 | } |
| 831 | #endif |
| 832 | |
| 833 | static irqreturn_t msm_ehci_irq(struct usb_hcd *hcd) |
| 834 | { |
| 835 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 836 | |
| 837 | if (atomic_read(&mhcd->in_lpm)) { |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 838 | dev_dbg(mhcd->dev, "phy async intr\n"); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 839 | disable_irq_nosync(hcd->irq); |
| 840 | mhcd->async_int = true; |
| 841 | pm_runtime_get(mhcd->dev); |
| 842 | return IRQ_HANDLED; |
| 843 | } |
| 844 | |
| 845 | return ehci_irq(hcd); |
| 846 | } |
| 847 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 848 | static irqreturn_t msm_async_irq(int irq, void *data) |
| 849 | { |
| 850 | struct msm_hcd *mhcd = data; |
| 851 | int ret; |
| 852 | |
| 853 | mhcd->async_int_cnt++; |
| 854 | dev_dbg(mhcd->dev, "%s: hsusb host remote wakeup interrupt cnt: %u\n", |
| 855 | __func__, mhcd->async_int_cnt); |
| 856 | |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 857 | pm_stay_awake(mhcd->dev); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 858 | |
| 859 | spin_lock(&mhcd->wakeup_lock); |
| 860 | if (mhcd->async_irq_enabled) { |
| 861 | mhcd->async_irq_enabled = 0; |
| 862 | disable_irq_wake(irq); |
| 863 | disable_irq_nosync(irq); |
| 864 | } |
| 865 | spin_unlock(&mhcd->wakeup_lock); |
| 866 | |
| 867 | if (!atomic_read(&mhcd->pm_usage_cnt)) { |
| 868 | ret = pm_runtime_get(mhcd->dev); |
| 869 | if ((ret == 1) || (ret == -EINPROGRESS)) |
| 870 | pm_runtime_put_noidle(mhcd->dev); |
| 871 | else |
| 872 | atomic_set(&mhcd->pm_usage_cnt, 1); |
| 873 | } |
| 874 | |
| 875 | return IRQ_HANDLED; |
| 876 | } |
| 877 | |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 878 | static irqreturn_t msm_ehci_host_wakeup_irq(int irq, void *data) |
| 879 | { |
| 880 | |
| 881 | struct msm_hcd *mhcd = data; |
| 882 | |
| 883 | mhcd->pmic_gpio_int_cnt++; |
| 884 | dev_dbg(mhcd->dev, "%s: hsusb host remote wakeup interrupt cnt: %u\n", |
| 885 | __func__, mhcd->pmic_gpio_int_cnt); |
| 886 | |
| 887 | |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 888 | pm_stay_awake(mhcd->dev); |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 889 | |
| 890 | if (mhcd->pmic_gpio_dp_irq_enabled) { |
| 891 | mhcd->pmic_gpio_dp_irq_enabled = 0; |
| 892 | disable_irq_wake(irq); |
| 893 | disable_irq_nosync(irq); |
| 894 | } |
| 895 | |
| 896 | if (!atomic_read(&mhcd->pm_usage_cnt)) { |
| 897 | atomic_set(&mhcd->pm_usage_cnt, 1); |
| 898 | pm_runtime_get(mhcd->dev); |
| 899 | } |
| 900 | |
| 901 | return IRQ_HANDLED; |
| 902 | } |
| 903 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 904 | static int msm_ehci_reset(struct usb_hcd *hcd) |
| 905 | { |
| 906 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 907 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 908 | struct msm_usb_host_platform_data *pdata; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 909 | int retval; |
| 910 | |
| 911 | ehci->caps = USB_CAPLENGTH; |
| 912 | ehci->regs = USB_CAPLENGTH + |
| 913 | HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); |
| 914 | dbg_hcs_params(ehci, "reset"); |
| 915 | dbg_hcc_params(ehci, "reset"); |
| 916 | |
| 917 | /* cache the data to minimize the chip reads*/ |
| 918 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
| 919 | |
| 920 | hcd->has_tt = 1; |
| 921 | ehci->sbrn = HCD_USB2; |
| 922 | |
| 923 | retval = ehci_halt(ehci); |
| 924 | if (retval) |
| 925 | return retval; |
| 926 | |
| 927 | /* data structure init */ |
| 928 | retval = ehci_init(hcd); |
| 929 | if (retval) |
| 930 | return retval; |
| 931 | |
| 932 | retval = ehci_reset(ehci); |
| 933 | if (retval) |
| 934 | return retval; |
| 935 | |
| 936 | /* bursts of unspecified length. */ |
| 937 | writel_relaxed(0, USB_AHBBURST); |
| 938 | /* Use the AHB transactor */ |
Vijayavardhan Vennapusa | 5f32d7a | 2012-03-14 16:30:26 +0530 | [diff] [blame] | 939 | writel_relaxed(0x08, USB_AHBMODE); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 940 | /* Disable streaming mode and select host mode */ |
| 941 | writel_relaxed(0x13, USB_USBMODE); |
| 942 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 943 | pdata = mhcd->dev->platform_data; |
| 944 | if (pdata && pdata->use_sec_phy) |
| 945 | writel_relaxed(readl_relaxed(USB_PHY_CTRL2) | (1<<16), |
| 946 | USB_PHY_CTRL2); |
| 947 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 948 | ehci_port_power(ehci, 1); |
| 949 | return 0; |
| 950 | } |
| 951 | |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 952 | static int msm_ehci_bus_resume_with_gpio(struct usb_hcd *hcd) |
| 953 | { |
| 954 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 955 | int ret; |
| 956 | |
| 957 | gpio_direction_output(mhcd->resume_gpio, 1); |
| 958 | |
| 959 | ret = ehci_bus_resume(hcd); |
| 960 | |
| 961 | gpio_direction_output(mhcd->resume_gpio, 0); |
| 962 | |
| 963 | return ret; |
| 964 | } |
| 965 | |
Rajkumar Raghupathy | ad8d68e | 2013-06-06 17:48:39 +0530 | [diff] [blame] | 966 | #if defined(CONFIG_DEBUG_FS) |
| 967 | static u32 addr; |
| 968 | #define BUF_SIZE 32 |
| 969 | static ssize_t debug_read_phy_data(struct file *file, char __user *ubuf, |
| 970 | size_t count, loff_t *ppos) |
| 971 | { |
| 972 | struct msm_hcd *mhcd = file->private_data; |
| 973 | char *kbuf; |
| 974 | size_t c = 0; |
| 975 | u32 data = 0; |
| 976 | int ret = 0; |
| 977 | |
| 978 | kbuf = kzalloc(sizeof(char) * BUF_SIZE, GFP_KERNEL); |
| 979 | pm_runtime_get(mhcd->dev); |
| 980 | data = msm_ulpi_read(mhcd, addr); |
| 981 | pm_runtime_put(mhcd->dev); |
| 982 | if (data < 0) { |
| 983 | dev_err(mhcd->dev, |
| 984 | "%s(): ulpi read timeout\n", __func__); |
| 985 | return -ETIMEDOUT; |
| 986 | } |
| 987 | |
| 988 | c = scnprintf(kbuf, BUF_SIZE, "addr: 0x%x: data: 0x%x\n", addr, data); |
| 989 | |
| 990 | ret = simple_read_from_buffer(ubuf, count, ppos, kbuf, c); |
| 991 | |
| 992 | kfree(kbuf); |
| 993 | |
| 994 | return ret; |
| 995 | } |
| 996 | |
| 997 | static ssize_t debug_write_phy_data(struct file *file, const char __user *buf, |
| 998 | size_t count, loff_t *ppos) |
| 999 | { |
| 1000 | struct msm_hcd *mhcd = file->private_data; |
| 1001 | char kbuf[10]; |
| 1002 | u32 data = 0; |
| 1003 | |
| 1004 | memset(kbuf, 0, 10); |
| 1005 | |
| 1006 | if (copy_from_user(kbuf, buf, count > 10 ? 10 : count)) |
| 1007 | return -EFAULT; |
| 1008 | |
| 1009 | if (sscanf(kbuf, "%x", &data) != 1) |
| 1010 | return -EINVAL; |
| 1011 | |
| 1012 | pm_runtime_get(mhcd->dev); |
| 1013 | if (msm_ulpi_write(mhcd, data, addr) < 0) { |
| 1014 | dev_err(mhcd->dev, |
| 1015 | "%s(): ulpi write timeout\n", __func__); |
| 1016 | return -ETIMEDOUT; |
| 1017 | } |
| 1018 | pm_runtime_put(mhcd->dev); |
| 1019 | |
| 1020 | return count; |
| 1021 | } |
| 1022 | |
| 1023 | static ssize_t debug_phy_write_addr(struct file *file, const char __user *buf, |
| 1024 | size_t count, loff_t *ppos) |
| 1025 | { |
| 1026 | char kbuf[10]; |
| 1027 | u32 temp; |
| 1028 | |
| 1029 | memset(kbuf, 0, 10); |
| 1030 | |
| 1031 | if (copy_from_user(kbuf, buf, count > 10 ? 10 : count)) |
| 1032 | return -EFAULT; |
| 1033 | |
| 1034 | if (sscanf(kbuf, "%x", &temp) != 1) |
| 1035 | return -EINVAL; |
| 1036 | |
| 1037 | if (temp > 0x3F) |
| 1038 | return -EINVAL; |
| 1039 | |
| 1040 | addr = temp; |
| 1041 | |
| 1042 | return count; |
| 1043 | } |
| 1044 | |
| 1045 | static int debug_open(struct inode *inode, struct file *file) |
| 1046 | { |
| 1047 | file->private_data = inode->i_private; |
| 1048 | return 0; |
| 1049 | } |
| 1050 | |
| 1051 | const struct file_operations debug_rw_phy_ops = { |
| 1052 | .open = debug_open, |
| 1053 | .read = debug_read_phy_data, |
| 1054 | .write = debug_write_phy_data, |
| 1055 | }; |
| 1056 | |
| 1057 | const struct file_operations debug_write_phy_ops = { |
| 1058 | .open = debug_open, |
| 1059 | .write = debug_phy_write_addr, |
| 1060 | }; |
| 1061 | |
| 1062 | static struct dentry *dent_ehci; |
| 1063 | |
| 1064 | static int ehci_debugfs_init(struct msm_hcd *mhcd) |
| 1065 | { |
| 1066 | struct dentry *debug_phy_data; |
| 1067 | struct dentry *debug_phy_addr; |
| 1068 | |
| 1069 | dent_ehci = debugfs_create_dir(dev_name(mhcd->dev), 0); |
| 1070 | if (IS_ERR(dent_ehci)) |
| 1071 | return -ENOENT; |
| 1072 | |
| 1073 | debug_phy_data = debugfs_create_file("phy_reg_data", 0666, |
| 1074 | dent_ehci, mhcd, &debug_rw_phy_ops); |
| 1075 | if (!debug_phy_data) { |
| 1076 | debugfs_remove(dent_ehci); |
| 1077 | return -ENOENT; |
| 1078 | } |
| 1079 | |
| 1080 | debug_phy_addr = debugfs_create_file("phy_reg_addr", 0666, |
| 1081 | dent_ehci, mhcd, &debug_write_phy_ops); |
| 1082 | if (!debug_phy_addr) { |
| 1083 | debugfs_remove_recursive(dent_ehci); |
| 1084 | return -ENOENT; |
| 1085 | } |
| 1086 | return 0; |
| 1087 | } |
| 1088 | #else |
| 1089 | static int ehci_debugfs_init(struct msm_hcd *mhcd) |
| 1090 | { |
| 1091 | return 0; |
| 1092 | } |
| 1093 | #endif |
| 1094 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1095 | static struct hc_driver msm_hc2_driver = { |
| 1096 | .description = hcd_name, |
| 1097 | .product_desc = "Qualcomm EHCI Host Controller", |
| 1098 | .hcd_priv_size = sizeof(struct msm_hcd), |
| 1099 | |
| 1100 | /* |
| 1101 | * generic hardware linkage |
| 1102 | */ |
| 1103 | .irq = msm_ehci_irq, |
| 1104 | .flags = HCD_USB2 | HCD_MEMORY, |
| 1105 | |
| 1106 | .reset = msm_ehci_reset, |
| 1107 | .start = ehci_run, |
| 1108 | |
| 1109 | .stop = ehci_stop, |
| 1110 | .shutdown = ehci_shutdown, |
| 1111 | |
| 1112 | /* |
| 1113 | * managing i/o requests and associated device resources |
| 1114 | */ |
| 1115 | .urb_enqueue = ehci_urb_enqueue, |
| 1116 | .urb_dequeue = ehci_urb_dequeue, |
| 1117 | .endpoint_disable = ehci_endpoint_disable, |
| 1118 | .endpoint_reset = ehci_endpoint_reset, |
| 1119 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, |
| 1120 | |
| 1121 | /* |
| 1122 | * scheduling support |
| 1123 | */ |
| 1124 | .get_frame_number = ehci_get_frame, |
| 1125 | |
| 1126 | /* |
| 1127 | * root hub support |
| 1128 | */ |
| 1129 | .hub_status_data = ehci_hub_status_data, |
| 1130 | .hub_control = ehci_hub_control, |
| 1131 | .relinquish_port = ehci_relinquish_port, |
| 1132 | .port_handed_over = ehci_port_handed_over, |
| 1133 | |
| 1134 | /* |
| 1135 | * PM support |
| 1136 | */ |
| 1137 | .bus_suspend = ehci_bus_suspend, |
| 1138 | .bus_resume = ehci_bus_resume, |
| 1139 | }; |
| 1140 | |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 1141 | static irqreturn_t msm_hsusb_wakeup_irq(int irq, void *data) |
| 1142 | { |
| 1143 | struct msm_hcd *mhcd = data; |
| 1144 | int ret; |
| 1145 | |
| 1146 | mhcd->wakeup_int_cnt++; |
| 1147 | dev_dbg(mhcd->dev, "%s: hsic remote wakeup interrupt cnt: %u\n", |
| 1148 | __func__, mhcd->wakeup_int_cnt); |
| 1149 | |
| 1150 | pm_stay_awake(mhcd->dev); |
| 1151 | |
| 1152 | spin_lock(&mhcd->wakeup_lock); |
| 1153 | if (mhcd->wakeup_irq_enabled) { |
| 1154 | mhcd->wakeup_irq_enabled = 0; |
| 1155 | disable_irq_wake(irq); |
| 1156 | disable_irq_nosync(irq); |
| 1157 | } |
| 1158 | spin_unlock(&mhcd->wakeup_lock); |
| 1159 | |
| 1160 | if (!atomic_read(&mhcd->pm_usage_cnt)) { |
| 1161 | ret = pm_runtime_get(mhcd->dev); |
| 1162 | /* |
| 1163 | * controller runtime resume can race with us. |
| 1164 | * if we are active (ret == 1) or resuming |
| 1165 | * (ret == -EINPROGRESS), decrement the |
| 1166 | * PM usage counter before returning. |
| 1167 | */ |
| 1168 | if ((ret == 1) || (ret == -EINPROGRESS)) { |
| 1169 | pm_runtime_put_noidle(mhcd->dev); |
| 1170 | } else { |
| 1171 | /* Let khubd know of hub port status change */ |
| 1172 | if (mhcd->ehci.no_selective_suspend) |
| 1173 | mhcd->ehci.suspended_ports = 1; |
| 1174 | atomic_set(&mhcd->pm_usage_cnt, 1); |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | return IRQ_HANDLED; |
| 1179 | } |
| 1180 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1181 | static int msm_ehci_init_clocks(struct msm_hcd *mhcd, u32 init) |
| 1182 | { |
| 1183 | int ret = 0; |
| 1184 | |
| 1185 | if (!init) |
| 1186 | goto put_clocks; |
| 1187 | |
| 1188 | /* 60MHz alt_core_clk is for LINK to be used during PHY RESET */ |
| 1189 | mhcd->alt_core_clk = clk_get(mhcd->dev, "alt_core_clk"); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1190 | if (IS_ERR(mhcd->alt_core_clk)) |
| 1191 | dev_dbg(mhcd->dev, "failed to get alt_core_clk\n"); |
| 1192 | else |
| 1193 | clk_set_rate(mhcd->alt_core_clk, 60000000); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1194 | |
| 1195 | /* iface_clk is required for data transfers */ |
| 1196 | mhcd->iface_clk = clk_get(mhcd->dev, "iface_clk"); |
| 1197 | if (IS_ERR(mhcd->iface_clk)) { |
| 1198 | dev_err(mhcd->dev, "failed to get iface_clk\n"); |
| 1199 | ret = PTR_ERR(mhcd->iface_clk); |
| 1200 | goto put_alt_core_clk; |
| 1201 | } |
| 1202 | |
| 1203 | /* Link's protocol engine is based on pclk which must |
| 1204 | * be running >55Mhz and frequency should also not change. |
| 1205 | * Hence, vote for maximum clk frequency on its source |
| 1206 | */ |
| 1207 | mhcd->core_clk = clk_get(mhcd->dev, "core_clk"); |
| 1208 | if (IS_ERR(mhcd->core_clk)) { |
| 1209 | dev_err(mhcd->dev, "failed to get core_clk\n"); |
| 1210 | ret = PTR_ERR(mhcd->core_clk); |
| 1211 | goto put_iface_clk; |
| 1212 | } |
| 1213 | clk_set_rate(mhcd->core_clk, INT_MAX); |
| 1214 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1215 | mhcd->phy_sleep_clk = clk_get(mhcd->dev, "sleep_clk"); |
| 1216 | if (IS_ERR(mhcd->phy_sleep_clk)) |
| 1217 | dev_dbg(mhcd->dev, "failed to get sleep_clk\n"); |
| 1218 | else |
| 1219 | clk_prepare_enable(mhcd->phy_sleep_clk); |
| 1220 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1221 | clk_prepare_enable(mhcd->core_clk); |
| 1222 | clk_prepare_enable(mhcd->iface_clk); |
| 1223 | |
| 1224 | return 0; |
| 1225 | |
| 1226 | put_clocks: |
Jack Pham | 35fba31 | 2013-01-21 19:19:21 -0800 | [diff] [blame] | 1227 | if (!atomic_read(&mhcd->in_lpm)) { |
| 1228 | clk_disable_unprepare(mhcd->iface_clk); |
| 1229 | clk_disable_unprepare(mhcd->core_clk); |
| 1230 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1231 | clk_put(mhcd->core_clk); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1232 | if (!IS_ERR(mhcd->phy_sleep_clk)) { |
| 1233 | clk_disable_unprepare(mhcd->phy_sleep_clk); |
| 1234 | clk_put(mhcd->phy_sleep_clk); |
| 1235 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1236 | put_iface_clk: |
| 1237 | clk_put(mhcd->iface_clk); |
| 1238 | put_alt_core_clk: |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1239 | if (!IS_ERR(mhcd->alt_core_clk)) |
| 1240 | clk_put(mhcd->alt_core_clk); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1241 | |
| 1242 | return ret; |
| 1243 | } |
| 1244 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1245 | struct msm_usb_host_platform_data *ehci_msm2_dt_to_pdata( |
| 1246 | struct platform_device *pdev) |
| 1247 | { |
| 1248 | struct device_node *node = pdev->dev.of_node; |
| 1249 | struct msm_usb_host_platform_data *pdata; |
| 1250 | |
| 1251 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 1252 | if (!pdata) { |
| 1253 | dev_err(&pdev->dev, "unable to allocate platform data\n"); |
| 1254 | return NULL; |
| 1255 | } |
| 1256 | |
| 1257 | pdata->use_sec_phy = of_property_read_bool(node, |
| 1258 | "qcom,usb2-enable-hsphy2"); |
| 1259 | of_property_read_u32(node, "qcom,usb2-power-budget", |
| 1260 | &pdata->power_budget); |
Hemant Kumar | b8fc959 | 2013-04-17 19:29:39 -0700 | [diff] [blame] | 1261 | pdata->no_selective_suspend = of_property_read_bool(node, |
| 1262 | "qcom,no-selective-suspend"); |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1263 | pdata->resume_gpio = of_get_named_gpio(node, "qcom,resume-gpio", 0); |
| 1264 | if (pdata->resume_gpio < 0) |
| 1265 | pdata->resume_gpio = 0; |
| 1266 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1267 | return pdata; |
| 1268 | } |
| 1269 | |
| 1270 | static u64 ehci_msm_dma_mask = DMA_BIT_MASK(64); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1271 | static int __devinit ehci_msm2_probe(struct platform_device *pdev) |
| 1272 | { |
| 1273 | struct usb_hcd *hcd; |
| 1274 | struct resource *res; |
| 1275 | struct msm_hcd *mhcd; |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 1276 | const struct msm_usb_host_platform_data *pdata; |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1277 | char pdev_name[PDEV_NAME_LEN]; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1278 | int ret; |
| 1279 | |
| 1280 | dev_dbg(&pdev->dev, "ehci_msm2 probe\n"); |
| 1281 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1282 | if (pdev->dev.of_node) { |
| 1283 | dev_dbg(&pdev->dev, "device tree enabled\n"); |
| 1284 | pdev->dev.platform_data = ehci_msm2_dt_to_pdata(pdev); |
| 1285 | } |
| 1286 | |
| 1287 | if (!pdev->dev.platform_data) |
| 1288 | dev_dbg(&pdev->dev, "No platform data given\n"); |
| 1289 | |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1290 | pdata = pdev->dev.platform_data; |
| 1291 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1292 | if (!pdev->dev.dma_mask) |
| 1293 | pdev->dev.dma_mask = &ehci_msm_dma_mask; |
| 1294 | if (!pdev->dev.coherent_dma_mask) |
| 1295 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
| 1296 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1297 | hcd = usb_create_hcd(&msm_hc2_driver, &pdev->dev, |
| 1298 | dev_name(&pdev->dev)); |
| 1299 | if (!hcd) { |
| 1300 | dev_err(&pdev->dev, "Unable to create HCD\n"); |
| 1301 | return -ENOMEM; |
| 1302 | } |
| 1303 | |
Manu Gautam | 578656b | 2013-03-19 15:30:08 +0530 | [diff] [blame] | 1304 | hcd_to_bus(hcd)->skip_resume = true; |
| 1305 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1306 | hcd->irq = platform_get_irq(pdev, 0); |
| 1307 | if (hcd->irq < 0) { |
| 1308 | dev_err(&pdev->dev, "Unable to get IRQ resource\n"); |
| 1309 | ret = hcd->irq; |
| 1310 | goto put_hcd; |
| 1311 | } |
| 1312 | |
| 1313 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1314 | if (!res) { |
| 1315 | dev_err(&pdev->dev, "Unable to get memory resource\n"); |
| 1316 | ret = -ENODEV; |
| 1317 | goto put_hcd; |
| 1318 | } |
| 1319 | |
| 1320 | hcd->rsrc_start = res->start; |
| 1321 | hcd->rsrc_len = resource_size(res); |
| 1322 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 1323 | if (!hcd->regs) { |
| 1324 | dev_err(&pdev->dev, "ioremap failed\n"); |
| 1325 | ret = -ENOMEM; |
| 1326 | goto put_hcd; |
| 1327 | } |
| 1328 | |
| 1329 | mhcd = hcd_to_mhcd(hcd); |
| 1330 | mhcd->dev = &pdev->dev; |
| 1331 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1332 | spin_lock_init(&mhcd->wakeup_lock); |
| 1333 | |
| 1334 | mhcd->async_irq = platform_get_irq_byname(pdev, "async_irq"); |
| 1335 | if (mhcd->async_irq < 0) { |
| 1336 | dev_dbg(&pdev->dev, "platform_get_irq for async_int failed\n"); |
| 1337 | mhcd->async_irq = 0; |
| 1338 | } else { |
| 1339 | ret = request_irq(mhcd->async_irq, msm_async_irq, |
| 1340 | IRQF_TRIGGER_RISING, "msm_ehci_host", mhcd); |
| 1341 | if (ret) { |
| 1342 | dev_err(&pdev->dev, "request irq failed (ASYNC INT)\n"); |
| 1343 | goto unmap; |
| 1344 | } |
| 1345 | disable_irq(mhcd->async_irq); |
| 1346 | } |
| 1347 | |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1348 | snprintf(pdev_name, PDEV_NAME_LEN, "%s.%d", pdev->name, pdev->id); |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 1349 | mhcd->xo_clk = clk_get(&pdev->dev, "xo"); |
| 1350 | if (!IS_ERR(mhcd->xo_clk)) { |
| 1351 | ret = clk_prepare_enable(mhcd->xo_clk); |
| 1352 | } else { |
| 1353 | mhcd->xo_handle = msm_xo_get(MSM_XO_TCXO_D0, pdev_name); |
| 1354 | if (IS_ERR(mhcd->xo_handle)) { |
| 1355 | dev_err(&pdev->dev, "%s fail to get handle for X0 D0\n", |
| 1356 | __func__); |
| 1357 | ret = PTR_ERR(mhcd->xo_handle); |
| 1358 | goto free_async_irq; |
| 1359 | } else { |
| 1360 | ret = msm_xo_mode_vote(mhcd->xo_handle, MSM_XO_MODE_ON); |
| 1361 | } |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1362 | } |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1363 | if (ret) { |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 1364 | dev_err(&pdev->dev, "%s failed to vote for TCXO %d\n", |
| 1365 | __func__, ret); |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1366 | goto free_xo_handle; |
| 1367 | } |
| 1368 | |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1369 | if (pdata && pdata->resume_gpio) { |
| 1370 | mhcd->resume_gpio = pdata->resume_gpio; |
| 1371 | ret = gpio_request(mhcd->resume_gpio, "hsusb_resume"); |
| 1372 | if (ret) { |
| 1373 | dev_err(&pdev->dev, |
| 1374 | "resume gpio(%d) request failed:%d\n", |
| 1375 | mhcd->resume_gpio, ret); |
| 1376 | mhcd->resume_gpio = 0; |
| 1377 | } else { |
| 1378 | msm_hc2_driver.bus_resume = |
| 1379 | msm_ehci_bus_resume_with_gpio; |
| 1380 | } |
| 1381 | } |
| 1382 | |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 1383 | spin_lock_init(&mhcd->wakeup_lock); |
| 1384 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1385 | ret = msm_ehci_init_clocks(mhcd, 1); |
| 1386 | if (ret) { |
| 1387 | dev_err(&pdev->dev, "unable to initialize clocks\n"); |
| 1388 | ret = -ENODEV; |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1389 | goto devote_xo_handle; |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | ret = msm_ehci_init_vddcx(mhcd, 1); |
| 1393 | if (ret) { |
| 1394 | dev_err(&pdev->dev, "unable to initialize VDDCX\n"); |
| 1395 | ret = -ENODEV; |
| 1396 | goto deinit_clocks; |
| 1397 | } |
| 1398 | |
| 1399 | ret = msm_ehci_config_vddcx(mhcd, 1); |
| 1400 | if (ret) { |
| 1401 | dev_err(&pdev->dev, "hsusb vddcx configuration failed\n"); |
| 1402 | goto deinit_vddcx; |
| 1403 | } |
| 1404 | |
| 1405 | ret = msm_ehci_ldo_init(mhcd, 1); |
| 1406 | if (ret) { |
| 1407 | dev_err(&pdev->dev, "hsusb vreg configuration failed\n"); |
| 1408 | goto deinit_vddcx; |
| 1409 | } |
| 1410 | |
| 1411 | ret = msm_ehci_ldo_enable(mhcd, 1); |
| 1412 | if (ret) { |
| 1413 | dev_err(&pdev->dev, "hsusb vreg enable failed\n"); |
| 1414 | goto deinit_ldo; |
| 1415 | } |
| 1416 | |
| 1417 | ret = msm_ehci_init_vbus(mhcd, 1); |
| 1418 | if (ret) { |
| 1419 | dev_err(&pdev->dev, "unable to get vbus\n"); |
| 1420 | goto disable_ldo; |
| 1421 | } |
| 1422 | |
| 1423 | ret = msm_hsusb_reset(mhcd); |
| 1424 | if (ret) { |
| 1425 | dev_err(&pdev->dev, "hsusb PHY initialization failed\n"); |
| 1426 | goto vbus_deinit; |
| 1427 | } |
| 1428 | |
| 1429 | ret = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); |
| 1430 | if (ret) { |
| 1431 | dev_err(&pdev->dev, "unable to register HCD\n"); |
| 1432 | goto vbus_deinit; |
| 1433 | } |
| 1434 | |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 1435 | pdata = mhcd->dev->platform_data; |
| 1436 | if (pdata && (!pdata->dock_connect_irq || |
| 1437 | !irq_read_line(pdata->dock_connect_irq))) |
| 1438 | msm_ehci_vbus_power(mhcd, 1); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1439 | |
Hemant Kumar | b8fc959 | 2013-04-17 19:29:39 -0700 | [diff] [blame] | 1440 | /* For peripherals directly conneted to downstream port of root hub |
| 1441 | * and require to drive suspend and resume by controller driver instead |
| 1442 | * of root hub. |
| 1443 | */ |
| 1444 | if (pdata) |
| 1445 | mhcd->ehci.no_selective_suspend = pdata->no_selective_suspend; |
| 1446 | |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 1447 | mhcd->wakeup_irq = platform_get_irq_byname(pdev, "wakeup_irq"); |
| 1448 | if (mhcd->wakeup_irq > 0) { |
| 1449 | dev_dbg(&pdev->dev, "wakeup irq:%d\n", mhcd->wakeup_irq); |
| 1450 | |
| 1451 | irq_set_status_flags(mhcd->wakeup_irq, IRQ_NOAUTOEN); |
| 1452 | ret = request_irq(mhcd->wakeup_irq, msm_hsusb_wakeup_irq, |
| 1453 | IRQF_TRIGGER_HIGH, |
| 1454 | "msm_hsusb_wakeup", mhcd); |
| 1455 | if (ret) { |
| 1456 | dev_err(&pdev->dev, "request_irq(%d) failed:%d\n", |
| 1457 | mhcd->wakeup_irq, ret); |
| 1458 | mhcd->wakeup_irq = 0; |
| 1459 | } |
| 1460 | } else { |
| 1461 | mhcd->wakeup_irq = 0; |
| 1462 | } |
| 1463 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1464 | device_init_wakeup(&pdev->dev, 1); |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 1465 | wakeup_source_init(&mhcd->ws, dev_name(&pdev->dev)); |
| 1466 | pm_stay_awake(mhcd->dev); |
Chiranjeevi Velempati | ce16958 | 2012-08-25 14:15:41 +0530 | [diff] [blame] | 1467 | INIT_WORK(&mhcd->phy_susp_fail_work, msm_ehci_phy_susp_fail_work); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1468 | /* |
| 1469 | * This pdev->dev is assigned parent of root-hub by USB core, |
| 1470 | * hence, runtime framework automatically calls this driver's |
| 1471 | * runtime APIs based on root-hub's state. |
| 1472 | */ |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 1473 | /* configure pmic_gpio_irq for D+ change */ |
| 1474 | if (pdata && pdata->pmic_gpio_dp_irq) |
| 1475 | mhcd->pmic_gpio_dp_irq = pdata->pmic_gpio_dp_irq; |
| 1476 | if (mhcd->pmic_gpio_dp_irq) { |
| 1477 | ret = request_threaded_irq(mhcd->pmic_gpio_dp_irq, NULL, |
| 1478 | msm_ehci_host_wakeup_irq, |
| 1479 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
| 1480 | "msm_ehci_host_wakeup", mhcd); |
| 1481 | if (!ret) { |
| 1482 | disable_irq_nosync(mhcd->pmic_gpio_dp_irq); |
| 1483 | } else { |
| 1484 | dev_err(&pdev->dev, "request_irq(%d) failed: %d\n", |
| 1485 | mhcd->pmic_gpio_dp_irq, ret); |
| 1486 | mhcd->pmic_gpio_dp_irq = 0; |
| 1487 | } |
| 1488 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1489 | pm_runtime_set_active(&pdev->dev); |
| 1490 | pm_runtime_enable(&pdev->dev); |
| 1491 | |
Rajkumar Raghupathy | ad8d68e | 2013-06-06 17:48:39 +0530 | [diff] [blame] | 1492 | if (ehci_debugfs_init(mhcd) < 0) |
| 1493 | dev_err(mhcd->dev, "%s: debugfs init failed\n", __func__); |
| 1494 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1495 | return 0; |
| 1496 | |
| 1497 | vbus_deinit: |
| 1498 | msm_ehci_init_vbus(mhcd, 0); |
| 1499 | disable_ldo: |
| 1500 | msm_ehci_ldo_enable(mhcd, 0); |
| 1501 | deinit_ldo: |
| 1502 | msm_ehci_ldo_init(mhcd, 0); |
| 1503 | deinit_vddcx: |
| 1504 | msm_ehci_init_vddcx(mhcd, 0); |
| 1505 | deinit_clocks: |
| 1506 | msm_ehci_init_clocks(mhcd, 0); |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1507 | devote_xo_handle: |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1508 | if (mhcd->resume_gpio) |
| 1509 | gpio_free(mhcd->resume_gpio); |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 1510 | if (!IS_ERR(mhcd->xo_clk)) |
| 1511 | clk_disable_unprepare(mhcd->xo_clk); |
| 1512 | else |
| 1513 | msm_xo_mode_vote(mhcd->xo_handle, MSM_XO_MODE_OFF); |
Hemant Kumar | 8c0f2a8 | 2012-05-03 19:17:26 -0700 | [diff] [blame] | 1514 | free_xo_handle: |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 1515 | if (!IS_ERR(mhcd->xo_clk)) |
| 1516 | clk_put(mhcd->xo_clk); |
| 1517 | else |
| 1518 | msm_xo_put(mhcd->xo_handle); |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1519 | free_async_irq: |
| 1520 | if (mhcd->async_irq) |
| 1521 | free_irq(mhcd->async_irq, mhcd); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1522 | unmap: |
| 1523 | iounmap(hcd->regs); |
| 1524 | put_hcd: |
| 1525 | usb_put_hcd(hcd); |
| 1526 | |
| 1527 | return ret; |
| 1528 | } |
| 1529 | |
| 1530 | static int __devexit ehci_msm2_remove(struct platform_device *pdev) |
| 1531 | { |
| 1532 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 1533 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 1534 | |
Vijayavardhan Vennapusa | 4fa1369 | 2012-08-02 14:35:03 +0530 | [diff] [blame] | 1535 | if (mhcd->pmic_gpio_dp_irq) { |
| 1536 | if (mhcd->pmic_gpio_dp_irq_enabled) |
| 1537 | disable_irq_wake(mhcd->pmic_gpio_dp_irq); |
| 1538 | free_irq(mhcd->pmic_gpio_dp_irq, mhcd); |
| 1539 | } |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1540 | if (mhcd->async_irq) { |
| 1541 | if (mhcd->async_irq_enabled) |
| 1542 | disable_irq_wake(mhcd->async_irq); |
| 1543 | free_irq(mhcd->async_irq, mhcd); |
| 1544 | } |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1545 | |
Hemant Kumar | 17011ce | 2013-06-10 17:40:08 -0700 | [diff] [blame] | 1546 | if (mhcd->wakeup_irq) { |
| 1547 | if (mhcd->wakeup_irq_enabled) |
| 1548 | disable_irq_wake(mhcd->wakeup_irq); |
| 1549 | free_irq(mhcd->wakeup_irq, mhcd); |
| 1550 | } |
| 1551 | |
Hemant Kumar | a7d531d | 2013-06-18 22:12:18 -0700 | [diff] [blame] | 1552 | if (mhcd->resume_gpio) |
| 1553 | gpio_free(mhcd->resume_gpio); |
| 1554 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1555 | device_init_wakeup(&pdev->dev, 0); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1556 | pm_runtime_set_suspended(&pdev->dev); |
| 1557 | |
| 1558 | usb_remove_hcd(hcd); |
Hemant Kumar | 5692535 | 2012-02-13 16:59:52 -0800 | [diff] [blame] | 1559 | |
Vijayavardhan Vennapusa | 16fcaf9 | 2013-03-04 10:24:21 +0530 | [diff] [blame] | 1560 | if (!IS_ERR(mhcd->xo_clk)) { |
| 1561 | clk_disable_unprepare(mhcd->xo_clk); |
| 1562 | clk_put(mhcd->xo_clk); |
| 1563 | } else { |
| 1564 | msm_xo_put(mhcd->xo_handle); |
| 1565 | } |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1566 | msm_ehci_vbus_power(mhcd, 0); |
| 1567 | msm_ehci_init_vbus(mhcd, 0); |
| 1568 | msm_ehci_ldo_enable(mhcd, 0); |
| 1569 | msm_ehci_ldo_init(mhcd, 0); |
| 1570 | msm_ehci_init_vddcx(mhcd, 0); |
| 1571 | |
| 1572 | msm_ehci_init_clocks(mhcd, 0); |
Hemant Kumar | 153f997 | 2013-06-19 16:49:45 -0700 | [diff] [blame] | 1573 | wakeup_source_trash(&mhcd->ws); |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1574 | iounmap(hcd->regs); |
| 1575 | usb_put_hcd(hcd); |
| 1576 | |
Rajkumar Raghupathy | ad8d68e | 2013-06-06 17:48:39 +0530 | [diff] [blame] | 1577 | #if defined(CONFIG_DEBUG_FS) |
| 1578 | debugfs_remove_recursive(dent_ehci); |
| 1579 | #endif |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1580 | return 0; |
| 1581 | } |
| 1582 | |
| 1583 | #ifdef CONFIG_PM_SLEEP |
| 1584 | static int ehci_msm2_pm_suspend(struct device *dev) |
| 1585 | { |
| 1586 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 1587 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 1588 | |
| 1589 | dev_dbg(dev, "ehci-msm2 PM suspend\n"); |
| 1590 | |
| 1591 | if (device_may_wakeup(dev)) |
| 1592 | enable_irq_wake(hcd->irq); |
| 1593 | |
| 1594 | return msm_ehci_suspend(mhcd); |
| 1595 | |
| 1596 | } |
| 1597 | |
| 1598 | static int ehci_msm2_pm_resume(struct device *dev) |
| 1599 | { |
| 1600 | int ret; |
| 1601 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 1602 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 1603 | |
| 1604 | dev_dbg(dev, "ehci-msm2 PM resume\n"); |
| 1605 | |
| 1606 | if (device_may_wakeup(dev)) |
| 1607 | disable_irq_wake(hcd->irq); |
| 1608 | |
| 1609 | ret = msm_ehci_resume(mhcd); |
| 1610 | if (ret) |
| 1611 | return ret; |
| 1612 | |
| 1613 | /* Bring the device to full powered state upon system resume */ |
| 1614 | pm_runtime_disable(dev); |
| 1615 | pm_runtime_set_active(dev); |
| 1616 | pm_runtime_enable(dev); |
| 1617 | |
| 1618 | return 0; |
| 1619 | } |
| 1620 | #endif |
| 1621 | |
| 1622 | #ifdef CONFIG_PM_RUNTIME |
| 1623 | static int ehci_msm2_runtime_idle(struct device *dev) |
| 1624 | { |
| 1625 | dev_dbg(dev, "EHCI runtime idle\n"); |
| 1626 | |
| 1627 | return 0; |
| 1628 | } |
| 1629 | |
| 1630 | static int ehci_msm2_runtime_suspend(struct device *dev) |
| 1631 | { |
| 1632 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 1633 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 1634 | |
| 1635 | dev_dbg(dev, "EHCI runtime suspend\n"); |
| 1636 | return msm_ehci_suspend(mhcd); |
| 1637 | } |
| 1638 | |
| 1639 | static int ehci_msm2_runtime_resume(struct device *dev) |
| 1640 | { |
| 1641 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 1642 | struct msm_hcd *mhcd = hcd_to_mhcd(hcd); |
| 1643 | |
| 1644 | dev_dbg(dev, "EHCI runtime resume\n"); |
| 1645 | return msm_ehci_resume(mhcd); |
| 1646 | } |
| 1647 | #endif |
| 1648 | |
| 1649 | #ifdef CONFIG_PM |
| 1650 | static const struct dev_pm_ops ehci_msm2_dev_pm_ops = { |
| 1651 | SET_SYSTEM_SLEEP_PM_OPS(ehci_msm2_pm_suspend, ehci_msm2_pm_resume) |
| 1652 | SET_RUNTIME_PM_OPS(ehci_msm2_runtime_suspend, ehci_msm2_runtime_resume, |
| 1653 | ehci_msm2_runtime_idle) |
| 1654 | }; |
| 1655 | #endif |
| 1656 | |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1657 | static const struct of_device_id ehci_msm2_dt_match[] = { |
| 1658 | { .compatible = "qcom,ehci-host", |
| 1659 | }, |
| 1660 | {} |
| 1661 | }; |
| 1662 | |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1663 | static struct platform_driver ehci_msm2_driver = { |
| 1664 | .probe = ehci_msm2_probe, |
| 1665 | .remove = __devexit_p(ehci_msm2_remove), |
| 1666 | .driver = { |
| 1667 | .name = "msm_ehci_host", |
| 1668 | #ifdef CONFIG_PM |
| 1669 | .pm = &ehci_msm2_dev_pm_ops, |
| 1670 | #endif |
Vijayavardhan Vennapusa | 1f5da0b | 2013-01-08 20:03:57 +0530 | [diff] [blame] | 1671 | .of_match_table = ehci_msm2_dt_match, |
Manu Gautam | 91223e0 | 2011-11-08 15:27:22 +0530 | [diff] [blame] | 1672 | }, |
| 1673 | }; |