Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1 | /* |
Hemant Kumar | 84c6b59 | 2018-01-31 14:02:12 -0800 | [diff] [blame] | 2 | * Copyright (c) 2013-2018, The Linux Foundation. All rights reserved. |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/err.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/io.h> |
| 20 | #include <linux/of.h> |
| 21 | #include <linux/of_device.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/regulator/consumer.h> |
| 24 | #include <linux/usb/phy.h> |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 25 | #include <linux/clk.h> |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 26 | #include <linux/reset.h> |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 27 | |
| 28 | enum core_ldo_levels { |
| 29 | CORE_LEVEL_NONE = 0, |
| 30 | CORE_LEVEL_MIN, |
| 31 | CORE_LEVEL_MAX, |
| 32 | }; |
| 33 | |
| 34 | #define INIT_MAX_TIME_USEC 1000 |
| 35 | |
| 36 | /* default CORE votlage and load values */ |
| 37 | #define USB_SSPHY_1P2_VOL_MIN 1200000 /* uV */ |
| 38 | #define USB_SSPHY_1P2_VOL_MAX 1200000 /* uV */ |
| 39 | #define USB_SSPHY_HPM_LOAD 23000 /* uA */ |
| 40 | |
| 41 | /* USB3PHY_PCIE_USB3_PCS_PCS_STATUS bit */ |
| 42 | #define PHYSTATUS BIT(6) |
| 43 | |
| 44 | /* PCIE_USB3_PHY_AUTONOMOUS_MODE_CTRL bits */ |
| 45 | #define ARCVR_DTCT_EN BIT(0) |
| 46 | #define ALFPS_DTCT_EN BIT(1) |
| 47 | #define ARCVR_DTCT_EVENT_SEL BIT(4) |
| 48 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 49 | /* |
| 50 | * register bits |
| 51 | * PCIE_USB3_PHY_PCS_MISC_TYPEC_CTRL - for QMP USB PHY |
| 52 | * USB3_DP_COM_PHY_MODE_CTRL - for QMP USB DP Combo PHY |
| 53 | */ |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 54 | |
| 55 | /* 0 - selects Lane A. 1 - selects Lane B */ |
| 56 | #define SW_PORTSELECT BIT(0) |
| 57 | /* port select mux: 1 - sw control. 0 - HW control*/ |
| 58 | #define SW_PORTSELECT_MX BIT(1) |
| 59 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 60 | /* USB3_DP_PHY_USB3_DP_COM_SWI_CTRL bits */ |
| 61 | |
| 62 | /* LANE related register read/write with USB3 */ |
| 63 | #define USB3_SWI_ACT_ACCESS_EN BIT(0) |
| 64 | /* LANE related register read/write with DP */ |
| 65 | #define DP_SWI_ACT_ACCESS_EN BIT(1) |
| 66 | |
| 67 | /* USB3_DP_COM_RESET_OVRD_CTRL bits */ |
| 68 | |
| 69 | /* DP PHY soft reset */ |
| 70 | #define SW_DPPHY_RESET BIT(0) |
| 71 | /* mux to select DP PHY reset control, 0:HW control, 1: software reset */ |
| 72 | #define SW_DPPHY_RESET_MUX BIT(1) |
| 73 | /* USB3 PHY soft reset */ |
| 74 | #define SW_USB3PHY_RESET BIT(2) |
| 75 | /* mux to select USB3 PHY reset control, 0:HW control, 1: software reset */ |
| 76 | #define SW_USB3PHY_RESET_MUX BIT(3) |
| 77 | |
| 78 | /* USB3_DP_COM_PHY_MODE_CTRL bits */ |
| 79 | #define USB3_MODE BIT(0) /* enables USB3 mode */ |
| 80 | #define DP_MODE BIT(1) /* enables DP mode */ |
| 81 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 82 | enum qmp_phy_rev_reg { |
| 83 | USB3_PHY_PCS_STATUS, |
| 84 | USB3_PHY_AUTONOMOUS_MODE_CTRL, |
| 85 | USB3_PHY_LFPS_RXTERM_IRQ_CLEAR, |
| 86 | USB3_PHY_POWER_DOWN_CONTROL, |
| 87 | USB3_PHY_SW_RESET, |
| 88 | USB3_PHY_START, |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 89 | |
| 90 | /* USB DP Combo PHY related */ |
| 91 | USB3_DP_DP_PHY_PD_CTL, |
| 92 | USB3_DP_COM_POWER_DOWN_CTRL, |
| 93 | USB3_DP_COM_SW_RESET, |
| 94 | USB3_DP_COM_RESET_OVRD_CTRL, |
| 95 | USB3_DP_COM_PHY_MODE_CTRL, |
| 96 | USB3_DP_COM_TYPEC_CTRL, |
| 97 | USB3_DP_COM_SWI_CTRL, |
| 98 | USB3_PCS_MISC_CLAMP_ENABLE, |
| 99 | /* TypeC port select configuration (optional) */ |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 100 | USB3_PHY_PCS_MISC_TYPEC_CTRL, |
| 101 | USB3_PHY_REG_MAX, |
| 102 | }; |
| 103 | |
| 104 | /* reg values to write */ |
| 105 | struct qmp_reg_val { |
| 106 | u32 offset; |
| 107 | u32 val; |
| 108 | u32 delay; |
| 109 | }; |
| 110 | |
| 111 | struct msm_ssphy_qmp { |
| 112 | struct usb_phy phy; |
| 113 | void __iomem *base; |
| 114 | void __iomem *vls_clamp_reg; |
Hemant Kumar | 84c6b59 | 2018-01-31 14:02:12 -0800 | [diff] [blame] | 115 | void __iomem *pcs_clamp_enable_reg; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 116 | void __iomem *tcsr_usb3_dp_phymode; |
| 117 | |
| 118 | struct regulator *vdd; |
| 119 | int vdd_levels[3]; /* none, low, high */ |
| 120 | struct regulator *core_ldo; |
| 121 | int core_voltage_levels[3]; |
| 122 | struct clk *ref_clk_src; |
| 123 | struct clk *ref_clk; |
| 124 | struct clk *aux_clk; |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 125 | struct clk *com_aux_clk; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 126 | struct clk *cfg_ahb_clk; |
| 127 | struct clk *pipe_clk; |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 128 | struct reset_control *phy_reset; |
| 129 | struct reset_control *phy_phy_reset; |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 130 | struct reset_control *global_phy_reset; |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 131 | bool power_enabled; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 132 | bool clk_enabled; |
| 133 | bool cable_connected; |
| 134 | bool in_suspend; |
| 135 | bool emulation; |
| 136 | unsigned int *phy_reg; /* revision based offset */ |
| 137 | unsigned int *qmp_phy_init_seq; |
| 138 | int init_seq_len; |
| 139 | unsigned int *qmp_phy_reg_offset; |
| 140 | int reg_offset_cnt; |
| 141 | }; |
| 142 | |
| 143 | static const struct of_device_id msm_usb_id_table[] = { |
| 144 | { |
| 145 | .compatible = "qcom,usb-ssphy-qmp", |
| 146 | }, |
| 147 | { |
| 148 | .compatible = "qcom,usb-ssphy-qmp-v1", |
| 149 | }, |
| 150 | { |
| 151 | .compatible = "qcom,usb-ssphy-qmp-v2", |
| 152 | }, |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 153 | { |
| 154 | .compatible = "qcom,usb-ssphy-qmp-dp-combo", |
| 155 | }, |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 156 | { |
| 157 | .compatible = "qcom,usb-ssphy-qmp-usb3-or-dp", |
| 158 | }, |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 159 | { }, |
| 160 | }; |
| 161 | MODULE_DEVICE_TABLE(of, msm_usb_id_table); |
| 162 | |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 163 | static void usb_qmp_powerup_phy(struct msm_ssphy_qmp *phy); |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 164 | static void msm_ssphy_qmp_enable_clks(struct msm_ssphy_qmp *phy, bool on); |
| 165 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 166 | static inline char *get_cable_status_str(struct msm_ssphy_qmp *phy) |
| 167 | { |
| 168 | return phy->cable_connected ? "connected" : "disconnected"; |
| 169 | } |
| 170 | |
| 171 | static void msm_ssusb_qmp_clr_lfps_rxterm_int(struct msm_ssphy_qmp *phy) |
| 172 | { |
| 173 | writeb_relaxed(1, phy->base + |
| 174 | phy->phy_reg[USB3_PHY_LFPS_RXTERM_IRQ_CLEAR]); |
| 175 | /* flush the previous write before next write */ |
| 176 | wmb(); |
| 177 | writeb_relaxed(0, phy->base + |
| 178 | phy->phy_reg[USB3_PHY_LFPS_RXTERM_IRQ_CLEAR]); |
| 179 | } |
| 180 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 181 | static void msm_ssusb_qmp_clamp_enable(struct msm_ssphy_qmp *phy, bool val) |
| 182 | { |
| 183 | switch (phy->phy.type) { |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 184 | case USB_PHY_TYPE_USB3_AND_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 185 | writel_relaxed(!val, phy->base + |
| 186 | phy->phy_reg[USB3_PCS_MISC_CLAMP_ENABLE]); |
| 187 | break; |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 188 | case USB_PHY_TYPE_USB3_OR_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 189 | case USB_PHY_TYPE_USB3: |
| 190 | writel_relaxed(!!val, phy->vls_clamp_reg); |
Hemant Kumar | 84c6b59 | 2018-01-31 14:02:12 -0800 | [diff] [blame] | 191 | if (phy->pcs_clamp_enable_reg) |
| 192 | writel_relaxed(!val, phy->pcs_clamp_enable_reg); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 193 | break; |
| 194 | default: |
| 195 | break; |
| 196 | } |
| 197 | } |
| 198 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 199 | static void msm_ssusb_qmp_enable_autonomous(struct msm_ssphy_qmp *phy, |
| 200 | int enable) |
| 201 | { |
| 202 | u8 val; |
| 203 | unsigned int autonomous_mode_offset = |
| 204 | phy->phy_reg[USB3_PHY_AUTONOMOUS_MODE_CTRL]; |
| 205 | |
| 206 | dev_dbg(phy->phy.dev, "enabling QMP autonomous mode with cable %s\n", |
| 207 | get_cable_status_str(phy)); |
| 208 | |
| 209 | if (enable) { |
| 210 | msm_ssusb_qmp_clr_lfps_rxterm_int(phy); |
Mayank Rana | 0d5efd7 | 2017-06-08 10:06:00 -0700 | [diff] [blame] | 211 | val = readb_relaxed(phy->base + autonomous_mode_offset); |
| 212 | val |= ARCVR_DTCT_EN; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 213 | if (phy->phy.flags & DEVICE_IN_SS_MODE) { |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 214 | val |= ALFPS_DTCT_EN; |
| 215 | val &= ~ARCVR_DTCT_EVENT_SEL; |
Mayank Rana | 0d5efd7 | 2017-06-08 10:06:00 -0700 | [diff] [blame] | 216 | } else { |
| 217 | val &= ~ALFPS_DTCT_EN; |
| 218 | val |= ARCVR_DTCT_EVENT_SEL; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 219 | } |
Mayank Rana | 0d5efd7 | 2017-06-08 10:06:00 -0700 | [diff] [blame] | 220 | writeb_relaxed(val, phy->base + autonomous_mode_offset); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 221 | msm_ssusb_qmp_clamp_enable(phy, true); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 222 | } else { |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 223 | msm_ssusb_qmp_clamp_enable(phy, false); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 224 | writeb_relaxed(0, phy->base + autonomous_mode_offset); |
| 225 | msm_ssusb_qmp_clr_lfps_rxterm_int(phy); |
| 226 | } |
| 227 | } |
| 228 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 229 | static int msm_ssusb_qmp_ldo_enable(struct msm_ssphy_qmp *phy, int on) |
| 230 | { |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 231 | int min, rc = 0; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 232 | |
| 233 | dev_dbg(phy->phy.dev, "reg (%s)\n", on ? "HPM" : "LPM"); |
| 234 | |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 235 | if (phy->power_enabled == on) { |
| 236 | dev_dbg(phy->phy.dev, "PHYs' regulators status %d\n", |
| 237 | phy->power_enabled); |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | phy->power_enabled = on; |
| 242 | |
| 243 | min = on ? 1 : 0; /* low or none? */ |
| 244 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 245 | if (!on) |
| 246 | goto disable_regulators; |
| 247 | |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 248 | rc = regulator_set_voltage(phy->vdd, phy->vdd_levels[min], |
| 249 | phy->vdd_levels[2]); |
| 250 | if (rc) { |
| 251 | dev_err(phy->phy.dev, "unable to set voltage for ssusb vdd\n"); |
| 252 | return rc; |
| 253 | } |
| 254 | |
| 255 | dev_dbg(phy->phy.dev, "min_vol:%d max_vol:%d\n", |
| 256 | phy->vdd_levels[min], phy->vdd_levels[2]); |
| 257 | |
| 258 | rc = regulator_enable(phy->vdd); |
| 259 | if (rc) { |
| 260 | dev_err(phy->phy.dev, |
| 261 | "regulator_enable(phy->vdd) failed, ret=%d", |
| 262 | rc); |
| 263 | goto unconfig_vdd; |
| 264 | } |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 265 | |
| 266 | rc = regulator_set_load(phy->core_ldo, USB_SSPHY_HPM_LOAD); |
| 267 | if (rc < 0) { |
| 268 | dev_err(phy->phy.dev, "Unable to set HPM of core_ldo\n"); |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 269 | goto disable_vdd; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | rc = regulator_set_voltage(phy->core_ldo, |
| 273 | phy->core_voltage_levels[CORE_LEVEL_MIN], |
| 274 | phy->core_voltage_levels[CORE_LEVEL_MAX]); |
| 275 | if (rc) { |
| 276 | dev_err(phy->phy.dev, "unable to set voltage for core_ldo\n"); |
| 277 | goto put_core_ldo_lpm; |
| 278 | } |
| 279 | |
| 280 | rc = regulator_enable(phy->core_ldo); |
| 281 | if (rc) { |
| 282 | dev_err(phy->phy.dev, "Unable to enable core_ldo\n"); |
| 283 | goto unset_core_ldo; |
| 284 | } |
| 285 | |
| 286 | return 0; |
| 287 | |
| 288 | disable_regulators: |
| 289 | rc = regulator_disable(phy->core_ldo); |
| 290 | if (rc) |
| 291 | dev_err(phy->phy.dev, "Unable to disable core_ldo\n"); |
| 292 | |
| 293 | unset_core_ldo: |
| 294 | rc = regulator_set_voltage(phy->core_ldo, |
| 295 | phy->core_voltage_levels[CORE_LEVEL_NONE], |
| 296 | phy->core_voltage_levels[CORE_LEVEL_MAX]); |
| 297 | if (rc) |
| 298 | dev_err(phy->phy.dev, "unable to set voltage for core_ldo\n"); |
| 299 | |
| 300 | put_core_ldo_lpm: |
| 301 | rc = regulator_set_load(phy->core_ldo, 0); |
| 302 | if (rc < 0) |
| 303 | dev_err(phy->phy.dev, "Unable to set LPM of core_ldo\n"); |
| 304 | |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 305 | disable_vdd: |
| 306 | rc = regulator_disable(phy->vdd); |
| 307 | if (rc) |
| 308 | dev_err(phy->phy.dev, "regulator_disable(phy->vdd) failed, ret=%d", |
| 309 | rc); |
| 310 | |
| 311 | unconfig_vdd: |
| 312 | rc = regulator_set_voltage(phy->vdd, phy->vdd_levels[min], |
| 313 | phy->vdd_levels[2]); |
| 314 | if (rc) |
| 315 | dev_err(phy->phy.dev, "unable to set voltage for ssusb vdd\n"); |
| 316 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 317 | return rc < 0 ? rc : 0; |
| 318 | } |
| 319 | |
| 320 | static int configure_phy_regs(struct usb_phy *uphy, |
| 321 | const struct qmp_reg_val *reg) |
| 322 | { |
| 323 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 324 | phy); |
| 325 | |
| 326 | if (!reg) { |
| 327 | dev_err(uphy->dev, "NULL PHY configuration\n"); |
| 328 | return -EINVAL; |
| 329 | } |
| 330 | |
| 331 | while (reg->offset != -1) { |
| 332 | writel_relaxed(reg->val, phy->base + reg->offset); |
| 333 | if (reg->delay) |
| 334 | usleep_range(reg->delay, reg->delay + 10); |
| 335 | reg++; |
| 336 | } |
| 337 | return 0; |
| 338 | } |
| 339 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 340 | static void usb_qmp_update_portselect_phymode(struct msm_ssphy_qmp *phy) |
| 341 | { |
| 342 | int val; |
| 343 | |
| 344 | /* perform lane selection */ |
| 345 | val = -EINVAL; |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 346 | if (phy->phy.flags & PHY_LANE_A) |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 347 | val = SW_PORTSELECT_MX; |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 348 | else if (phy->phy.flags & PHY_LANE_B) |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 349 | val = SW_PORTSELECT | SW_PORTSELECT_MX; |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 350 | |
| 351 | /* PHY must be powered up before updating portselect and phymode. */ |
| 352 | usb_qmp_powerup_phy(phy); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 353 | |
| 354 | switch (phy->phy.type) { |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 355 | case USB_PHY_TYPE_USB3_AND_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 356 | /* override hardware control for reset of qmp phy */ |
| 357 | writel_relaxed(SW_DPPHY_RESET_MUX | SW_DPPHY_RESET | |
| 358 | SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET, |
| 359 | phy->base + phy->phy_reg[USB3_DP_COM_RESET_OVRD_CTRL]); |
| 360 | |
| 361 | /* update port select */ |
| 362 | if (val > 0) { |
| 363 | dev_err(phy->phy.dev, |
| 364 | "USB DP QMP PHY: Update TYPEC CTRL(%d)\n", val); |
| 365 | writel_relaxed(val, phy->base + |
| 366 | phy->phy_reg[USB3_DP_COM_TYPEC_CTRL]); |
| 367 | } |
| 368 | |
| 369 | writel_relaxed(USB3_MODE | DP_MODE, |
| 370 | phy->base + phy->phy_reg[USB3_DP_COM_PHY_MODE_CTRL]); |
| 371 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 372 | /* bring both QMP USB and QMP DP PHYs PCS block out of reset */ |
| 373 | writel_relaxed(0x00, |
| 374 | phy->base + phy->phy_reg[USB3_DP_COM_RESET_OVRD_CTRL]); |
| 375 | break; |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 376 | case USB_PHY_TYPE_USB3_OR_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 377 | if (val > 0) { |
| 378 | dev_err(phy->phy.dev, |
| 379 | "USB QMP PHY: Update TYPEC CTRL(%d)\n", val); |
| 380 | writel_relaxed(val, phy->base + |
| 381 | phy->phy_reg[USB3_PHY_PCS_MISC_TYPEC_CTRL]); |
| 382 | } |
| 383 | break; |
| 384 | default: |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 385 | dev_dbg(phy->phy.dev, "no portselect for phy type %d\n", |
| 386 | phy->phy.type); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 387 | break; |
| 388 | } |
| 389 | |
| 390 | /* Make sure above selection and reset sequence is gone through */ |
| 391 | mb(); |
| 392 | } |
| 393 | |
| 394 | static void usb_qmp_powerup_phy(struct msm_ssphy_qmp *phy) |
| 395 | { |
| 396 | switch (phy->phy.type) { |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 397 | case USB_PHY_TYPE_USB3_AND_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 398 | /* power up USB3 and DP common logic block */ |
| 399 | writel_relaxed(0x01, |
| 400 | phy->base + phy->phy_reg[USB3_DP_COM_POWER_DOWN_CTRL]); |
| 401 | |
| 402 | /* |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 403 | * Don't write 0x0 to DP_COM_SW_RESET here as portselect and |
| 404 | * phymode operation needs DP_COM_SW_RESET as 0x1. |
| 405 | * msm_ssphy_qmp_init() writes 0x0 to DP_COM_SW_RESET before |
| 406 | * initializing PHY. |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 407 | */ |
| 408 | |
| 409 | /* intentional fall-through */ |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 410 | case USB_PHY_TYPE_USB3_OR_DP: |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 411 | case USB_PHY_TYPE_USB3: |
| 412 | /* power up USB3 PHY */ |
| 413 | writel_relaxed(0x01, |
| 414 | phy->base + phy->phy_reg[USB3_PHY_POWER_DOWN_CONTROL]); |
| 415 | break; |
| 416 | default: |
| 417 | dev_err(phy->phy.dev, "phy_powerup: Unknown USB QMP PHY type\n"); |
| 418 | break; |
| 419 | } |
| 420 | |
| 421 | /* Make sure that above write completed to power up PHY */ |
| 422 | mb(); |
| 423 | } |
| 424 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 425 | /* SSPHY Initialization */ |
| 426 | static int msm_ssphy_qmp_init(struct usb_phy *uphy) |
| 427 | { |
| 428 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 429 | phy); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 430 | int ret; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 431 | unsigned int init_timeout_usec = INIT_MAX_TIME_USEC; |
| 432 | const struct qmp_reg_val *reg = NULL; |
| 433 | |
| 434 | dev_dbg(uphy->dev, "Initializing QMP phy\n"); |
| 435 | |
| 436 | if (phy->emulation) |
| 437 | return 0; |
| 438 | |
Hemant Kumar | 16d1a05 | 2016-08-30 16:54:19 -0700 | [diff] [blame] | 439 | ret = msm_ssusb_qmp_ldo_enable(phy, 1); |
| 440 | if (ret) { |
| 441 | dev_err(phy->phy.dev, |
| 442 | "msm_ssusb_qmp_ldo_enable(1) failed, ret=%d\n", |
| 443 | ret); |
| 444 | return ret; |
| 445 | } |
| 446 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 447 | msm_ssphy_qmp_enable_clks(phy, true); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 448 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 449 | /* select appropriate port select and PHY mode if applicable */ |
| 450 | usb_qmp_update_portselect_phymode(phy); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 451 | |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 452 | /* power up PHY */ |
| 453 | usb_qmp_powerup_phy(phy); |
| 454 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 455 | reg = (struct qmp_reg_val *)phy->qmp_phy_init_seq; |
| 456 | |
| 457 | /* Main configuration */ |
| 458 | ret = configure_phy_regs(uphy, reg); |
| 459 | if (ret) { |
| 460 | dev_err(uphy->dev, "Failed the main PHY configuration\n"); |
| 461 | return ret; |
| 462 | } |
| 463 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 464 | /* perform software reset of PHY common logic */ |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 465 | if (phy->phy.type == USB_PHY_TYPE_USB3_AND_DP) |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 466 | writel_relaxed(0x00, |
| 467 | phy->base + phy->phy_reg[USB3_DP_COM_SW_RESET]); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 468 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 469 | /* perform software reset of PCS/Serdes */ |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 470 | writel_relaxed(0x00, phy->base + phy->phy_reg[USB3_PHY_SW_RESET]); |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 471 | /* start PCS/Serdes to operation mode */ |
| 472 | writel_relaxed(0x03, phy->base + phy->phy_reg[USB3_PHY_START]); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 473 | |
| 474 | /* Make sure above write completed to bring PHY out of reset */ |
| 475 | mb(); |
| 476 | |
| 477 | /* Wait for PHY initialization to be done */ |
| 478 | do { |
| 479 | if (readl_relaxed(phy->base + |
| 480 | phy->phy_reg[USB3_PHY_PCS_STATUS]) & PHYSTATUS) |
| 481 | usleep_range(1, 2); |
| 482 | else |
| 483 | break; |
| 484 | } while (--init_timeout_usec); |
| 485 | |
| 486 | if (!init_timeout_usec) { |
| 487 | dev_err(uphy->dev, "QMP PHY initialization timeout\n"); |
| 488 | dev_err(uphy->dev, "USB3_PHY_PCS_STATUS:%x\n", |
| 489 | readl_relaxed(phy->base + |
| 490 | phy->phy_reg[USB3_PHY_PCS_STATUS])); |
| 491 | return -EBUSY; |
| 492 | }; |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 497 | static int msm_ssphy_qmp_dp_combo_reset(struct usb_phy *uphy) |
| 498 | { |
| 499 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 500 | phy); |
| 501 | int ret = 0; |
| 502 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 503 | dev_dbg(uphy->dev, "Global reset of QMP DP combo phy\n"); |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 504 | /* Assert global PHY reset */ |
| 505 | ret = reset_control_assert(phy->global_phy_reset); |
| 506 | if (ret) { |
| 507 | dev_err(uphy->dev, "global_phy_reset assert failed\n"); |
| 508 | goto exit; |
| 509 | } |
| 510 | |
| 511 | /* Assert QMP USB PHY reset */ |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 512 | ret = reset_control_assert(phy->phy_reset); |
| 513 | if (ret) { |
| 514 | dev_err(uphy->dev, "phy_reset assert failed\n"); |
| 515 | goto exit; |
| 516 | } |
| 517 | |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 518 | /* De-Assert QMP USB PHY reset */ |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 519 | ret = reset_control_deassert(phy->phy_reset); |
| 520 | if (ret) |
| 521 | dev_err(uphy->dev, "phy_reset deassert failed\n"); |
| 522 | |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 523 | /* De-Assert global PHY reset */ |
| 524 | ret = reset_control_deassert(phy->global_phy_reset); |
| 525 | if (ret) |
| 526 | dev_err(uphy->dev, "global_phy_reset deassert failed\n"); |
| 527 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 528 | exit: |
| 529 | return ret; |
| 530 | } |
| 531 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 532 | static int msm_ssphy_qmp_reset(struct usb_phy *uphy) |
| 533 | { |
| 534 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 535 | phy); |
| 536 | int ret; |
| 537 | |
| 538 | dev_dbg(uphy->dev, "Resetting QMP phy\n"); |
| 539 | |
| 540 | /* Assert USB3 PHY reset */ |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 541 | ret = reset_control_assert(phy->phy_phy_reset); |
| 542 | if (ret) { |
| 543 | dev_err(uphy->dev, "phy_phy_reset assert failed\n"); |
| 544 | goto exit; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | /* Assert USB3 PHY CSR reset */ |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 548 | ret = reset_control_assert(phy->phy_reset); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 549 | if (ret) { |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 550 | dev_err(uphy->dev, "phy_reset assert failed\n"); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 551 | goto deassert_phy_phy_reset; |
| 552 | } |
| 553 | |
Jack Pham | ffe2ec4 | 2017-03-22 12:03:53 -0700 | [diff] [blame] | 554 | /* select usb3 phy mode */ |
| 555 | if (phy->tcsr_usb3_dp_phymode) |
| 556 | writel_relaxed(0x0, phy->tcsr_usb3_dp_phymode); |
| 557 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 558 | /* Deassert USB3 PHY CSR reset */ |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 559 | ret = reset_control_deassert(phy->phy_reset); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 560 | if (ret) { |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 561 | dev_err(uphy->dev, "phy_reset deassert failed\n"); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 562 | goto deassert_phy_phy_reset; |
| 563 | } |
| 564 | |
| 565 | /* Deassert USB3 PHY reset */ |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 566 | ret = reset_control_deassert(phy->phy_phy_reset); |
| 567 | if (ret) { |
| 568 | dev_err(uphy->dev, "phy_phy_reset deassert failed\n"); |
| 569 | goto exit; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | return 0; |
| 573 | |
| 574 | deassert_phy_phy_reset: |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 575 | ret = reset_control_deassert(phy->phy_phy_reset); |
| 576 | if (ret) |
| 577 | dev_err(uphy->dev, "phy_phy_reset deassert failed\n"); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 578 | exit: |
| 579 | phy->in_suspend = false; |
| 580 | |
| 581 | return ret; |
| 582 | } |
| 583 | |
| 584 | static int msm_ssphy_power_enable(struct msm_ssphy_qmp *phy, bool on) |
| 585 | { |
| 586 | bool host = phy->phy.flags & PHY_HOST_MODE; |
| 587 | int ret = 0; |
| 588 | |
| 589 | /* |
| 590 | * Turn off the phy's LDOs when cable is disconnected for device mode |
| 591 | * with external vbus_id indication. |
| 592 | */ |
| 593 | if (!host && !phy->cable_connected) { |
| 594 | if (on) { |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 595 | ret = msm_ssusb_qmp_ldo_enable(phy, 1); |
| 596 | if (ret) |
| 597 | dev_err(phy->phy.dev, |
| 598 | "msm_ssusb_qmp_ldo_enable(1) failed, ret=%d\n", |
| 599 | ret); |
| 600 | } else { |
| 601 | ret = msm_ssusb_qmp_ldo_enable(phy, 0); |
| 602 | if (ret) |
| 603 | dev_err(phy->phy.dev, |
| 604 | "msm_ssusb_qmp_ldo_enable(0) failed, ret=%d\n", |
| 605 | ret); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 606 | } |
| 607 | } |
| 608 | |
| 609 | return ret; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * Performs QMP PHY suspend/resume functionality. |
| 614 | * |
| 615 | * @uphy - usb phy pointer. |
| 616 | * @suspend - to enable suspend or not. 1 - suspend, 0 - resume |
| 617 | * |
| 618 | */ |
| 619 | static int msm_ssphy_qmp_set_suspend(struct usb_phy *uphy, int suspend) |
| 620 | { |
| 621 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 622 | phy); |
| 623 | |
| 624 | dev_dbg(uphy->dev, "QMP PHY set_suspend for %s called with cable %s\n", |
| 625 | (suspend ? "suspend" : "resume"), |
| 626 | get_cable_status_str(phy)); |
| 627 | |
| 628 | if (phy->in_suspend == suspend) { |
| 629 | dev_dbg(uphy->dev, "%s: USB PHY is already %s.\n", |
| 630 | __func__, (suspend ? "suspended" : "resumed")); |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | if (suspend) { |
Hemant Kumar | 3e7dcb5 | 2017-09-25 18:01:23 -0700 | [diff] [blame] | 635 | if (phy->cable_connected) |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 636 | msm_ssusb_qmp_enable_autonomous(phy, 1); |
| 637 | |
Mayank Rana | 813952b | 2016-02-04 11:11:42 -0800 | [diff] [blame] | 638 | /* Make sure above write completed with PHY */ |
| 639 | wmb(); |
| 640 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 641 | msm_ssphy_qmp_enable_clks(phy, false); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 642 | phy->in_suspend = true; |
| 643 | msm_ssphy_power_enable(phy, 0); |
| 644 | dev_dbg(uphy->dev, "QMP PHY is suspend\n"); |
| 645 | } else { |
| 646 | msm_ssphy_power_enable(phy, 1); |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 647 | msm_ssphy_qmp_enable_clks(phy, true); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 648 | if (!phy->cable_connected) { |
| 649 | writel_relaxed(0x01, |
| 650 | phy->base + phy->phy_reg[USB3_PHY_POWER_DOWN_CONTROL]); |
| 651 | } else { |
| 652 | msm_ssusb_qmp_enable_autonomous(phy, 0); |
| 653 | } |
Mayank Rana | 813952b | 2016-02-04 11:11:42 -0800 | [diff] [blame] | 654 | |
| 655 | /* Make sure that above write completed with PHY */ |
| 656 | wmb(); |
| 657 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 658 | phy->in_suspend = false; |
| 659 | dev_dbg(uphy->dev, "QMP PHY is resumed\n"); |
| 660 | } |
| 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | static int msm_ssphy_qmp_notify_connect(struct usb_phy *uphy, |
| 666 | enum usb_device_speed speed) |
| 667 | { |
| 668 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 669 | phy); |
| 670 | |
| 671 | dev_dbg(uphy->dev, "QMP phy connect notification\n"); |
| 672 | phy->cable_connected = true; |
| 673 | dev_dbg(uphy->dev, "cable_connected=%d\n", phy->cable_connected); |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | static int msm_ssphy_qmp_notify_disconnect(struct usb_phy *uphy, |
| 678 | enum usb_device_speed speed) |
| 679 | { |
| 680 | struct msm_ssphy_qmp *phy = container_of(uphy, struct msm_ssphy_qmp, |
| 681 | phy); |
| 682 | |
Hemant Kumar | 3e7dcb5 | 2017-09-25 18:01:23 -0700 | [diff] [blame] | 683 | writel_relaxed(0x00, |
| 684 | phy->base + phy->phy_reg[USB3_PHY_POWER_DOWN_CONTROL]); |
| 685 | readl_relaxed(phy->base + phy->phy_reg[USB3_PHY_POWER_DOWN_CONTROL]); |
| 686 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 687 | dev_dbg(uphy->dev, "QMP phy disconnect notification\n"); |
| 688 | dev_dbg(uphy->dev, " cable_connected=%d\n", phy->cable_connected); |
| 689 | phy->cable_connected = false; |
| 690 | return 0; |
| 691 | } |
| 692 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 693 | static int msm_ssphy_qmp_get_clks(struct msm_ssphy_qmp *phy, struct device *dev) |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 694 | { |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 695 | int ret = 0; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 696 | |
| 697 | phy->aux_clk = devm_clk_get(dev, "aux_clk"); |
| 698 | if (IS_ERR(phy->aux_clk)) { |
| 699 | ret = PTR_ERR(phy->aux_clk); |
| 700 | phy->aux_clk = NULL; |
| 701 | if (ret != -EPROBE_DEFER) |
| 702 | dev_err(dev, "failed to get aux_clk\n"); |
| 703 | goto err; |
| 704 | } |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 705 | clk_set_rate(phy->aux_clk, clk_round_rate(phy->aux_clk, ULONG_MAX)); |
| 706 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 707 | if (of_property_match_string(dev->of_node, |
| 708 | "clock-names", "cfg_ahb_clk") >= 0) { |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 709 | phy->cfg_ahb_clk = devm_clk_get(dev, "cfg_ahb_clk"); |
| 710 | if (IS_ERR(phy->cfg_ahb_clk)) { |
| 711 | ret = PTR_ERR(phy->cfg_ahb_clk); |
| 712 | if (ret != -EPROBE_DEFER) |
| 713 | dev_err(dev, |
| 714 | "failed to get cfg_ahb_clk ret %d\n", ret); |
| 715 | goto err; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | phy->pipe_clk = devm_clk_get(dev, "pipe_clk"); |
| 720 | if (IS_ERR(phy->pipe_clk)) { |
| 721 | ret = PTR_ERR(phy->pipe_clk); |
| 722 | phy->pipe_clk = NULL; |
| 723 | if (ret != -EPROBE_DEFER) |
| 724 | dev_err(dev, "failed to get pipe_clk\n"); |
| 725 | goto err; |
| 726 | } |
| 727 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 728 | phy->ref_clk_src = devm_clk_get(dev, "ref_clk_src"); |
| 729 | if (IS_ERR(phy->ref_clk_src)) |
| 730 | phy->ref_clk_src = NULL; |
| 731 | |
| 732 | phy->ref_clk = devm_clk_get(dev, "ref_clk"); |
| 733 | if (IS_ERR(phy->ref_clk)) |
| 734 | phy->ref_clk = NULL; |
| 735 | |
| 736 | if (of_property_match_string(dev->of_node, |
| 737 | "clock-names", "com_aux_clk") >= 0) { |
| 738 | phy->com_aux_clk = devm_clk_get(dev, "com_aux_clk"); |
| 739 | if (IS_ERR(phy->com_aux_clk)) { |
| 740 | ret = PTR_ERR(phy->com_aux_clk); |
| 741 | if (ret != -EPROBE_DEFER) |
| 742 | dev_err(dev, |
| 743 | "failed to get com_aux_clk ret %d\n", ret); |
| 744 | goto err; |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | err: |
| 749 | return ret; |
| 750 | } |
| 751 | |
| 752 | static void msm_ssphy_qmp_enable_clks(struct msm_ssphy_qmp *phy, bool on) |
| 753 | { |
| 754 | dev_dbg(phy->phy.dev, "%s(): clk_enabled:%d on:%d\n", __func__, |
| 755 | phy->clk_enabled, on); |
| 756 | |
| 757 | if (!phy->clk_enabled && on) { |
| 758 | if (phy->ref_clk_src) |
| 759 | clk_prepare_enable(phy->ref_clk_src); |
| 760 | |
| 761 | if (phy->ref_clk) |
| 762 | clk_prepare_enable(phy->ref_clk); |
| 763 | |
| 764 | if (phy->com_aux_clk) |
| 765 | clk_prepare_enable(phy->com_aux_clk); |
| 766 | |
| 767 | clk_prepare_enable(phy->aux_clk); |
| 768 | if (phy->cfg_ahb_clk) |
| 769 | clk_prepare_enable(phy->cfg_ahb_clk); |
| 770 | |
| 771 | clk_prepare_enable(phy->pipe_clk); |
| 772 | phy->clk_enabled = true; |
| 773 | } |
| 774 | |
| 775 | if (phy->clk_enabled && !on) { |
| 776 | clk_disable_unprepare(phy->pipe_clk); |
| 777 | |
| 778 | if (phy->cfg_ahb_clk) |
| 779 | clk_disable_unprepare(phy->cfg_ahb_clk); |
| 780 | |
| 781 | clk_disable_unprepare(phy->aux_clk); |
| 782 | if (phy->com_aux_clk) |
| 783 | clk_disable_unprepare(phy->com_aux_clk); |
| 784 | |
| 785 | if (phy->ref_clk) |
| 786 | clk_disable_unprepare(phy->ref_clk); |
| 787 | |
| 788 | if (phy->ref_clk_src) |
| 789 | clk_disable_unprepare(phy->ref_clk_src); |
| 790 | |
| 791 | phy->clk_enabled = false; |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | static int msm_ssphy_qmp_probe(struct platform_device *pdev) |
| 796 | { |
| 797 | struct msm_ssphy_qmp *phy; |
| 798 | struct device *dev = &pdev->dev; |
| 799 | struct resource *res; |
| 800 | int ret = 0, size = 0, len; |
| 801 | |
| 802 | phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); |
| 803 | if (!phy) |
| 804 | return -ENOMEM; |
| 805 | |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 806 | phy->phy.type = USB_PHY_TYPE_USB3; |
| 807 | if (of_device_is_compatible(dev->of_node, |
| 808 | "qcom,usb-ssphy-qmp-dp-combo")) |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 809 | phy->phy.type = USB_PHY_TYPE_USB3_AND_DP; |
| 810 | |
| 811 | if (of_device_is_compatible(dev->of_node, |
| 812 | "qcom,usb-ssphy-qmp-usb-or-dp")) |
| 813 | phy->phy.type = USB_PHY_TYPE_USB3_OR_DP; |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 814 | |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 815 | ret = msm_ssphy_qmp_get_clks(phy, dev); |
| 816 | if (ret) |
| 817 | goto err; |
| 818 | |
Amit Nischal | 4d27821 | 2016-06-06 17:54:34 +0530 | [diff] [blame] | 819 | phy->phy_reset = devm_reset_control_get(dev, "phy_reset"); |
| 820 | if (IS_ERR(phy->phy_reset)) { |
| 821 | ret = PTR_ERR(phy->phy_reset); |
| 822 | dev_dbg(dev, "failed to get phy_reset\n"); |
| 823 | goto err; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 824 | } |
| 825 | |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 826 | if (phy->phy.type == USB_PHY_TYPE_USB3_AND_DP) { |
Mayank Rana | 807b896 | 2017-04-11 20:50:11 -0700 | [diff] [blame] | 827 | phy->global_phy_reset = devm_reset_control_get(dev, |
| 828 | "global_phy_reset"); |
| 829 | if (IS_ERR(phy->global_phy_reset)) { |
| 830 | ret = PTR_ERR(phy->global_phy_reset); |
| 831 | dev_dbg(dev, "failed to get global_phy_reset\n"); |
| 832 | goto err; |
| 833 | } |
| 834 | } else { |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 835 | phy->phy_phy_reset = devm_reset_control_get(dev, |
| 836 | "phy_phy_reset"); |
| 837 | if (IS_ERR(phy->phy_phy_reset)) { |
| 838 | ret = PTR_ERR(phy->phy_phy_reset); |
| 839 | dev_dbg(dev, "failed to get phy_phy_reset\n"); |
| 840 | goto err; |
| 841 | } |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 842 | } |
| 843 | |
| 844 | of_get_property(dev->of_node, "qcom,qmp-phy-reg-offset", &size); |
| 845 | if (size) { |
| 846 | phy->qmp_phy_reg_offset = devm_kzalloc(dev, |
| 847 | size, GFP_KERNEL); |
| 848 | if (phy->qmp_phy_reg_offset) { |
| 849 | phy->reg_offset_cnt = |
| 850 | (size / sizeof(*phy->qmp_phy_reg_offset)); |
| 851 | if (phy->reg_offset_cnt > USB3_PHY_REG_MAX) { |
| 852 | dev_err(dev, "invalid reg offset count\n"); |
| 853 | return -EINVAL; |
| 854 | } |
| 855 | |
| 856 | of_property_read_u32_array(dev->of_node, |
| 857 | "qcom,qmp-phy-reg-offset", |
| 858 | phy->qmp_phy_reg_offset, |
| 859 | phy->reg_offset_cnt); |
| 860 | } else { |
| 861 | dev_err(dev, "err mem alloc for qmp_phy_reg_offset\n"); |
| 862 | return -ENOMEM; |
| 863 | } |
| 864 | phy->phy_reg = phy->qmp_phy_reg_offset; |
| 865 | } else { |
| 866 | dev_err(dev, "err provide qcom,qmp-phy-reg-offset\n"); |
| 867 | return -EINVAL; |
| 868 | } |
| 869 | |
| 870 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 871 | "qmp_phy_base"); |
| 872 | if (!res) { |
| 873 | dev_err(dev, "failed getting qmp_phy_base\n"); |
| 874 | return -ENODEV; |
| 875 | } |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 876 | |
| 877 | /* |
| 878 | * For USB QMP DP combo PHY, common set of registers shall be accessed |
| 879 | * by DP driver as well. |
| 880 | */ |
| 881 | phy->base = devm_ioremap_nocache(dev, res->start, resource_size(res)); |
| 882 | if (IS_ERR_OR_NULL(phy->base)) { |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 883 | ret = PTR_ERR(phy->base); |
| 884 | goto err; |
| 885 | } |
| 886 | |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 887 | if (phy->phy.type != USB_PHY_TYPE_USB3_AND_DP) { |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 888 | res = platform_get_resource_byname(pdev, |
| 889 | IORESOURCE_MEM, "vls_clamp_reg"); |
| 890 | phy->vls_clamp_reg = devm_ioremap_resource(dev, res); |
| 891 | if (IS_ERR(phy->vls_clamp_reg)) { |
| 892 | dev_err(dev, "couldn't find vls_clamp_reg address.\n"); |
| 893 | return PTR_ERR(phy->vls_clamp_reg); |
| 894 | } |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
Hemant Kumar | 84c6b59 | 2018-01-31 14:02:12 -0800 | [diff] [blame] | 898 | "pcs_clamp_enable_reg"); |
| 899 | if (res) { |
| 900 | phy->pcs_clamp_enable_reg = devm_ioremap_resource(dev, res); |
| 901 | if (IS_ERR(phy->pcs_clamp_enable_reg)) { |
| 902 | dev_err(dev, "err getting pcs_clamp_enable_reg address.\n"); |
| 903 | return PTR_ERR(phy->pcs_clamp_enable_reg); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 908 | "tcsr_usb3_dp_phymode"); |
| 909 | if (res) { |
| 910 | phy->tcsr_usb3_dp_phymode = devm_ioremap_resource(dev, res); |
| 911 | if (IS_ERR(phy->tcsr_usb3_dp_phymode)) { |
| 912 | dev_err(dev, "err getting tcsr_usb3_dp_phymode addr\n"); |
| 913 | return PTR_ERR(phy->tcsr_usb3_dp_phymode); |
| 914 | } |
| 915 | } |
| 916 | |
| 917 | phy->emulation = of_property_read_bool(dev->of_node, |
| 918 | "qcom,emulation"); |
| 919 | if (!phy->emulation) { |
| 920 | of_get_property(dev->of_node, "qcom,qmp-phy-init-seq", &size); |
| 921 | if (size) { |
| 922 | if (size % sizeof(*phy->qmp_phy_init_seq)) { |
| 923 | dev_err(dev, "invalid init_seq_len\n"); |
| 924 | return -EINVAL; |
| 925 | } |
| 926 | phy->qmp_phy_init_seq = devm_kzalloc(dev, |
| 927 | size, GFP_KERNEL); |
| 928 | if (phy->qmp_phy_init_seq) { |
| 929 | phy->init_seq_len = |
| 930 | (size / sizeof(*phy->qmp_phy_init_seq)); |
| 931 | |
| 932 | of_property_read_u32_array(dev->of_node, |
| 933 | "qcom,qmp-phy-init-seq", |
| 934 | phy->qmp_phy_init_seq, |
| 935 | phy->init_seq_len); |
| 936 | } else { |
| 937 | dev_err(dev, "error allocating memory for phy_init_seq\n"); |
| 938 | return -EINVAL; |
| 939 | } |
| 940 | } else { |
| 941 | dev_err(dev, "error need qmp-phy-init-seq\n"); |
| 942 | return -EINVAL; |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | /* Set default core voltage values */ |
| 947 | phy->core_voltage_levels[CORE_LEVEL_NONE] = 0; |
| 948 | phy->core_voltage_levels[CORE_LEVEL_MIN] = USB_SSPHY_1P2_VOL_MIN; |
| 949 | phy->core_voltage_levels[CORE_LEVEL_MAX] = USB_SSPHY_1P2_VOL_MAX; |
| 950 | |
| 951 | if (of_get_property(dev->of_node, "qcom,core-voltage-level", &len) && |
| 952 | len == sizeof(phy->core_voltage_levels)) { |
| 953 | ret = of_property_read_u32_array(dev->of_node, |
| 954 | "qcom,core-voltage-level", |
| 955 | (u32 *)phy->core_voltage_levels, |
| 956 | len / sizeof(u32)); |
| 957 | if (ret) { |
| 958 | dev_err(dev, "err qcom,core-voltage-level property\n"); |
| 959 | goto err; |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | if (of_get_property(dev->of_node, "qcom,vdd-voltage-level", &len) && |
| 964 | len == sizeof(phy->vdd_levels)) { |
| 965 | ret = of_property_read_u32_array(dev->of_node, |
| 966 | "qcom,vdd-voltage-level", |
| 967 | (u32 *) phy->vdd_levels, |
| 968 | len / sizeof(u32)); |
| 969 | if (ret) { |
| 970 | dev_err(dev, "err qcom,vdd-voltage-level property\n"); |
| 971 | goto err; |
| 972 | } |
| 973 | } else { |
| 974 | ret = -EINVAL; |
| 975 | dev_err(dev, "error invalid inputs for vdd-voltage-level\n"); |
| 976 | goto err; |
| 977 | } |
| 978 | |
| 979 | phy->vdd = devm_regulator_get(dev, "vdd"); |
| 980 | if (IS_ERR(phy->vdd)) { |
| 981 | dev_err(dev, "unable to get vdd supply\n"); |
| 982 | ret = PTR_ERR(phy->vdd); |
| 983 | goto err; |
| 984 | } |
| 985 | |
| 986 | phy->core_ldo = devm_regulator_get(dev, "core"); |
| 987 | if (IS_ERR(phy->core_ldo)) { |
| 988 | dev_err(dev, "unable to get core ldo supply\n"); |
| 989 | ret = PTR_ERR(phy->core_ldo); |
| 990 | goto err; |
| 991 | } |
| 992 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 993 | platform_set_drvdata(pdev, phy); |
| 994 | |
| 995 | if (of_property_read_bool(dev->of_node, "qcom,vbus-valid-override")) |
| 996 | phy->phy.flags |= PHY_VBUS_VALID_OVERRIDE; |
| 997 | |
| 998 | phy->phy.dev = dev; |
| 999 | phy->phy.init = msm_ssphy_qmp_init; |
| 1000 | phy->phy.set_suspend = msm_ssphy_qmp_set_suspend; |
| 1001 | phy->phy.notify_connect = msm_ssphy_qmp_notify_connect; |
| 1002 | phy->phy.notify_disconnect = msm_ssphy_qmp_notify_disconnect; |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 1003 | |
Hemant Kumar | bce97a2 | 2017-12-07 16:17:38 -0800 | [diff] [blame] | 1004 | if (phy->phy.type == USB_PHY_TYPE_USB3_AND_DP) |
Mayank Rana | 4c40cd9 | 2017-03-21 14:40:55 -0700 | [diff] [blame] | 1005 | phy->phy.reset = msm_ssphy_qmp_dp_combo_reset; |
| 1006 | else |
| 1007 | phy->phy.reset = msm_ssphy_qmp_reset; |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1008 | |
| 1009 | ret = usb_add_phy_dev(&phy->phy); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1010 | |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1011 | err: |
| 1012 | return ret; |
| 1013 | } |
| 1014 | |
| 1015 | static int msm_ssphy_qmp_remove(struct platform_device *pdev) |
| 1016 | { |
| 1017 | struct msm_ssphy_qmp *phy = platform_get_drvdata(pdev); |
| 1018 | |
| 1019 | if (!phy) |
| 1020 | return 0; |
| 1021 | |
| 1022 | usb_remove_phy(&phy->phy); |
Mayank Rana | 561d044 | 2017-03-16 18:19:14 -0700 | [diff] [blame] | 1023 | msm_ssphy_qmp_enable_clks(phy, false); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1024 | msm_ssusb_qmp_ldo_enable(phy, 0); |
Mayank Rana | 3cb43a3 | 2016-08-02 12:10:20 -0700 | [diff] [blame] | 1025 | kfree(phy); |
| 1026 | return 0; |
| 1027 | } |
| 1028 | |
| 1029 | static struct platform_driver msm_ssphy_qmp_driver = { |
| 1030 | .probe = msm_ssphy_qmp_probe, |
| 1031 | .remove = msm_ssphy_qmp_remove, |
| 1032 | .driver = { |
| 1033 | .name = "msm-usb-ssphy-qmp", |
| 1034 | .of_match_table = of_match_ptr(msm_usb_id_table), |
| 1035 | }, |
| 1036 | }; |
| 1037 | |
| 1038 | module_platform_driver(msm_ssphy_qmp_driver); |
| 1039 | |
| 1040 | MODULE_DESCRIPTION("MSM USB SS QMP PHY driver"); |
| 1041 | MODULE_LICENSE("GPL v2"); |