target/linux/ipq806x/patches-4.9/820-qcom-ipq4019-Add-IPQ4019-USB-HS-SS-PHY-drivers.patch

   1 From e73682ec4455c34f3f3edc7f40d90ed297521012 Mon Sep 17 00:00:00 2001
   2 From: Senthilkumar N L <snlakshm@codeaurora.org>
   3 Date: Tue, 6 Jan 2015 12:52:23 +0530
   4 Subject: [PATCH] qcom: ipq4019: Add IPQ4019 USB HS/SS PHY drivers
   5
   6 These drivers handles control and configuration of the HS
   7 and SS USB PHY transceivers.
   8
   9 Signed-off-by: Senthilkumar N L <snlakshm@codeaurora.org>
  10 Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
  11
  12 ---
  13 Changed:
  14         - replaced spaces with tabs
  15         - remove emulation and host variables
  16 ---
  17  drivers/usb/phy/Kconfig          |  11 ++
  18  drivers/usb/phy/Makefile         |   2 +
  19  drivers/usb/phy/phy-qca-baldur.c | 233 +++++++++++++++++++++++++++++++++++++++
  20  drivers/usb/phy/phy-qca-uniphy.c | 141 +++++++++++++++++++++++
  21  4 files changed, 387 insertions(+)
  22  create mode 100644 drivers/usb/phy/phy-qca-baldur.c
  23  create mode 100644 drivers/usb/phy/phy-qca-uniphy.c
  24
  25 --- a/drivers/usb/phy/Kconfig
  26 +++ b/drivers/usb/phy/Kconfig
  27 @@ -194,6 +194,17 @@ config USB_MXS_PHY
  28
  29           MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
  30
  31 +config USB_IPQ4019_PHY
  32 +       tristate "IPQ4019 PHY wrappers support"
  33 +       depends on (USB || USB_GADGET) && ARCH_QCOM
  34 +       select USB_PHY
  35 +       help
  36 +         Enable this to support the USB PHY transceivers on QCA961x chips.
  37 +         It handles PHY initialization, clock management required after
  38 +         resetting the hardware and power management.
  39 +         This driver is required even for peripheral only or host only
  40 +         mode configurations.
  41 +
  42  config USB_ULPI
  43         bool "Generic ULPI Transceiver Driver"
  44         depends on ARM || ARM64
  45 --- a/drivers/usb/phy/Makefile
  46 +++ b/drivers/usb/phy/Makefile
  47 @@ -21,6 +21,8 @@ obj-$(CONFIG_USB_GPIO_VBUS)           += phy-gpio
  48  obj-$(CONFIG_USB_ISP1301)              += phy-isp1301.o
  49  obj-$(CONFIG_USB_MSM_OTG)              += phy-msm-usb.o
  50  obj-$(CONFIG_USB_QCOM_8X16_PHY)        += phy-qcom-8x16-usb.o
  51 +obj-$(CONFIG_USB_IPQ4019_PHY)          += phy-qca-baldur.o
  52 +obj-$(CONFIG_USB_IPQ4019_PHY)          += phy-qca-uniphy.o
  53  obj-$(CONFIG_USB_MV_OTG)               += phy-mv-usb.o
  54  obj-$(CONFIG_USB_MXS_PHY)              += phy-mxs-usb.o
  55  obj-$(CONFIG_USB_ULPI)                 += phy-ulpi.o
  56 --- /dev/null
  57 +++ b/drivers/usb/phy/phy-qca-baldur.c
  58 @@ -0,0 +1,233 @@
  59 +/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
  60 + *
  61 + * Permission to use, copy, modify, and/or distribute this software for any
  62 + * purpose with or without fee is hereby granted, provided that the above
  63 + * copyright notice and this permission notice appear in all copies.
  64 + *
  65 + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  66 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  67 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  68 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  69 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  70 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  71 + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  72 + *
  73 + */
  74 +
  75 +#include <linux/clk.h>
  76 +#include <linux/err.h>
  77 +#include <linux/io.h>
  78 +#include <linux/module.h>
  79 +#include <linux/of.h>
  80 +#include <linux/platform_device.h>
  81 +#include <linux/regulator/consumer.h>
  82 +#include <linux/usb/phy.h>
  83 +#include <linux/reset.h>
  84 +#include <linux/of_device.h>
  85 +
  86 +/**
  87 + *  USB Hardware registers
  88 + */
  89 +#define PHY_CTRL0_ADDR 0x000
  90 +#define PHY_CTRL1_ADDR 0x004
  91 +#define PHY_CTRL2_ADDR 0x008
  92 +#define PHY_CTRL3_ADDR 0x00C
  93 +#define PHY_CTRL4_ADDR 0x010
  94 +#define PHY_MISC_ADDR  0x024
  95 +#define PHY_IPG_ADDR   0x030
  96 +
  97 +#define PHY_CTRL0_VAL  0xA4600015
  98 +#define PHY_CTRL1_VAL  0x09500000
  99 +#define PHY_CTRL2_VAL  0x00058180
 100 +#define PHY_CTRL3_VAL  0x6DB6DCD6
 101 +#define PHY_CTRL4_VAL  0x836DB6DB
 102 +#define PHY_MISC_VAL   0x3803FB0C
 103 +#define PHY_IPG_VAL    0x47323232
 104 +
 105 +#define USB30_HS_PHY_HOST_MODE (0x01 << 21)
 106 +#define USB20_HS_PHY_HOST_MODE (0x01 << 5)
 107 +
 108 +/* used to differentiate between USB3 HS and USB2 HS PHY */
 109 +struct qca_baldur_hs_data {
 110 +       unsigned int usb3_hs_phy;
 111 +       unsigned int phy_config_offset;
 112 +};
 113 +
 114 +struct qca_baldur_hs_phy {
 115 +       struct device *dev;
 116 +       struct usb_phy phy;
 117 +
 118 +       void __iomem *base;
 119 +       void __iomem *qscratch_base;
 120 +
 121 +       struct reset_control *por_rst;
 122 +       struct reset_control *srif_rst;
 123 +
 124 +       const struct qca_baldur_hs_data *data;
 125 +};
 126 +
 127 +#define phy_to_dw_phy(x) container_of((x), struct qca_baldur_hs_phy, phy)
 128 +
 129 +static int qca_baldur_phy_read(struct usb_phy *x, u32 reg)
 130 +{
 131 +       struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
 132 +
 133 +       return readl(phy->base + reg);
 134 +}
 135 +
 136 +static int qca_baldur_phy_write(struct usb_phy *x, u32 val, u32 reg)
 137 +{
 138 +       struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
 139 +
 140 +       writel(val, phy->base + reg);
 141 +       return 0;
 142 +}
 143 +
 144 +static int qca_baldur_hs_phy_init(struct usb_phy *x)
 145 +{
 146 +       struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
 147 +
 148 +       /* assert HS PHY POR reset */
 149 +       reset_control_assert(phy->por_rst);
 150 +       msleep(10);
 151 +
 152 +       /* assert HS PHY SRIF reset */
 153 +       reset_control_assert(phy->srif_rst);
 154 +       msleep(10);
 155 +
 156 +       /* deassert HS PHY SRIF reset and program HS PHY registers */
 157 +       reset_control_deassert(phy->srif_rst);
 158 +       msleep(10);
 159 +
 160 +       /* perform PHY register writes */
 161 +       writel(PHY_CTRL0_VAL, phy->base + PHY_CTRL0_ADDR);
 162 +       writel(PHY_CTRL1_VAL, phy->base + PHY_CTRL1_ADDR);
 163 +       writel(PHY_CTRL2_VAL, phy->base + PHY_CTRL2_ADDR);
 164 +       writel(PHY_CTRL3_VAL, phy->base + PHY_CTRL3_ADDR);
 165 +       writel(PHY_CTRL4_VAL, phy->base + PHY_CTRL4_ADDR);
 166 +       writel(PHY_MISC_VAL, phy->base + PHY_MISC_ADDR);
 167 +       writel(PHY_IPG_VAL, phy->base + PHY_IPG_ADDR);
 168 +
 169 +       msleep(10);
 170 +
 171 +       /* de-assert USB3 HS PHY POR reset */
 172 +       reset_control_deassert(phy->por_rst);
 173 +
 174 +       return 0;
 175 +}
 176 +
 177 +static int qca_baldur_hs_get_resources(struct qca_baldur_hs_phy *phy)
 178 +{
 179 +       struct platform_device *pdev = to_platform_device(phy->dev);
 180 +       struct resource *res;
 181 +
 182 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 183 +       phy->base = devm_ioremap_resource(phy->dev, res);
 184 +       if (IS_ERR(phy->base))
 185 +               return PTR_ERR(phy->base);
 186 +
 187 +       phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
 188 +       if (IS_ERR(phy->por_rst))
 189 +               return PTR_ERR(phy->por_rst);
 190 +
 191 +       phy->srif_rst = devm_reset_control_get(phy->dev, "srif_rst");
 192 +       if (IS_ERR(phy->srif_rst))
 193 +               return PTR_ERR(phy->srif_rst);
 194 +
 195 +       return 0;
 196 +}
 197 +
 198 +static void qca_baldur_hs_put_resources(struct qca_baldur_hs_phy *phy)
 199 +{
 200 +       reset_control_assert(phy->srif_rst);
 201 +       reset_control_assert(phy->por_rst);
 202 +}
 203 +
 204 +static int qca_baldur_hs_remove(struct platform_device *pdev)
 205 +{
 206 +       struct qca_baldur_hs_phy *phy = platform_get_drvdata(pdev);
 207 +
 208 +       usb_remove_phy(&phy->phy);
 209 +       return 0;
 210 +}
 211 +
 212 +static void qca_baldur_hs_phy_shutdown(struct usb_phy *x)
 213 +{
 214 +       struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
 215 +
 216 +       qca_baldur_hs_put_resources(phy);
 217 +}
 218 +
 219 +static struct usb_phy_io_ops qca_baldur_io_ops = {
 220 +       .read = qca_baldur_phy_read,
 221 +       .write = qca_baldur_phy_write,
 222 +};
 223 +
 224 +static const struct qca_baldur_hs_data usb3_hs_data = {
 225 +       .usb3_hs_phy = 1,
 226 +       .phy_config_offset = USB30_HS_PHY_HOST_MODE,
 227 +};
 228 +
 229 +static const struct qca_baldur_hs_data usb2_hs_data = {
 230 +       .usb3_hs_phy = 0,
 231 +       .phy_config_offset = USB20_HS_PHY_HOST_MODE,
 232 +};
 233 +
 234 +static const struct of_device_id qca_baldur_hs_id_table[] = {
 235 +       { .compatible = "qca,baldur-usb3-hsphy", .data = &usb3_hs_data },
 236 +       { .compatible = "qca,baldur-usb2-hsphy", .data = &usb2_hs_data },
 237 +       { /* Sentinel */ }
 238 +};
 239 +MODULE_DEVICE_TABLE(of, qca_baldur_hs_id_table);
 240 +
 241 +static int qca_baldur_hs_probe(struct platform_device *pdev)
 242 +{
 243 +       const struct of_device_id *match;
 244 +       struct qca_baldur_hs_phy *phy;
 245 +       int err;
 246 +
 247 +       match = of_match_device(qca_baldur_hs_id_table, &pdev->dev);
 248 +       if (!match)
 249 +               return -ENODEV;
 250 +
 251 +       phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
 252 +       if (!phy)
 253 +               return -ENOMEM;
 254 +
 255 +       platform_set_drvdata(pdev, phy);
 256 +       phy->dev = &pdev->dev;
 257 +
 258 +       phy->data = match->data;
 259 +
 260 +       err = qca_baldur_hs_get_resources(phy);
 261 +       if (err < 0) {
 262 +               dev_err(&pdev->dev, "failed to request resources: %d\n", err);
 263 +               return err;
 264 +       }
 265 +
 266 +       phy->phy.dev = phy->dev;
 267 +       phy->phy.label = "qca-baldur-hsphy";
 268 +       phy->phy.init = qca_baldur_hs_phy_init;
 269 +       phy->phy.shutdown = qca_baldur_hs_phy_shutdown;
 270 +       phy->phy.type = USB_PHY_TYPE_USB2;
 271 +       phy->phy.io_ops = &qca_baldur_io_ops;
 272 +
 273 +       err = usb_add_phy_dev(&phy->phy);
 274 +       return err;
 275 +}
 276 +
 277 +static struct platform_driver qca_baldur_hs_driver = {
 278 +       .probe          = qca_baldur_hs_probe,
 279 +       .remove         = qca_baldur_hs_remove,
 280 +       .driver         = {
 281 +               .name   = "qca-baldur-hsphy",
 282 +               .owner  = THIS_MODULE,
 283 +               .of_match_table = qca_baldur_hs_id_table,
 284 +       },
 285 +};
 286 +
 287 +module_platform_driver(qca_baldur_hs_driver);
 288 +
 289 +MODULE_ALIAS("platform:qca-baldur-hsphy");
 290 +MODULE_LICENSE("Dual BSD/GPL");
 291 +MODULE_DESCRIPTION("USB3 QCA BALDUR HSPHY driver");
 292 --- /dev/null
 293 +++ b/drivers/usb/phy/phy-qca-uniphy.c
 294 @@ -0,0 +1,135 @@
 295 +/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
 296 + *
 297 + * Permission to use, copy, modify, and/or distribute this software for any
 298 + * purpose with or without fee is hereby granted, provided that the above
 299 + * copyright notice and this permission notice appear in all copies.
 300 + *
 301 + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 302 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 303 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 304 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 305 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 306 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 307 + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 308 + *
 309 + */
 310 +
 311 +#include <linux/clk.h>
 312 +#include <linux/err.h>
 313 +#include <linux/io.h>
 314 +#include <linux/module.h>
 315 +#include <linux/of.h>
 316 +#include <linux/platform_device.h>
 317 +#include <linux/regulator/consumer.h>
 318 +#include <linux/usb/phy.h>
 319 +#include <linux/reset.h>
 320 +#include <linux/of_device.h>
 321 +
 322 +struct qca_uni_ss_phy {
 323 +       struct usb_phy phy;
 324 +       struct device *dev;
 325 +
 326 +       void __iomem *base;
 327 +
 328 +       struct reset_control *por_rst;
 329 +};
 330 +
 331 +#define phy_to_dw_phy(x) container_of((x), struct qca_uni_ss_phy, phy)
 332 +
 333 +static void qca_uni_ss_phy_shutdown(struct usb_phy *x)
 334 +{
 335 +       struct qca_uni_ss_phy *phy = phy_to_dw_phy(x);
 336 +
 337 +       /* assert SS PHY POR reset */
 338 +       reset_control_assert(phy->por_rst);
 339 +}
 340 +
 341 +static int qca_uni_ss_phy_init(struct usb_phy *x)
 342 +{
 343 +       struct qca_uni_ss_phy *phy = phy_to_dw_phy(x);
 344 +
 345 +       /* assert SS PHY POR reset */
 346 +       reset_control_assert(phy->por_rst);
 347 +
 348 +       msleep(20);
 349 +
 350 +       /* deassert SS PHY POR reset */
 351 +       reset_control_deassert(phy->por_rst);
 352 +
 353 +       return 0;
 354 +}
 355 +
 356 +static int qca_uni_ss_get_resources(struct platform_device *pdev,
 357 +               struct qca_uni_ss_phy *phy)
 358 +{
 359 +       struct resource *res;
 360 +
 361 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 362 +       phy->base = devm_ioremap_resource(phy->dev, res);
 363 +       if (IS_ERR(phy->base))
 364 +               return PTR_ERR(phy->base);
 365 +
 366 +       phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
 367 +       if (IS_ERR(phy->por_rst))
 368 +               return PTR_ERR(phy->por_rst);
 369 +
 370 +       return 0;
 371 +}
 372 +
 373 +static int qca_uni_ss_remove(struct platform_device *pdev)
 374 +{
 375 +       struct qca_uni_ss_phy *phy = platform_get_drvdata(pdev);
 376 +
 377 +       usb_remove_phy(&phy->phy);
 378 +       return 0;
 379 +}
 380 +
 381 +static const struct of_device_id qca_uni_ss_id_table[] = {
 382 +       { .compatible = "qca,uni-ssphy" },
 383 +       { /* Sentinel */ }
 384 +};
 385 +MODULE_DEVICE_TABLE(of, qca_uni_ss_id_table);
 386 +
 387 +static int qca_uni_ss_probe(struct platform_device *pdev)
 388 +{
 389 +       struct qca_uni_ss_phy *phy;
 390 +       int ret;
 391 +
 392 +       phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
 393 +       if (!phy)
 394 +               return -ENOMEM;
 395 +
 396 +       platform_set_drvdata(pdev, phy);
 397 +       phy->dev = &pdev->dev;
 398 +
 399 +       ret = qca_uni_ss_get_resources(pdev, phy);
 400 +       if (ret < 0) {
 401 +               dev_err(&pdev->dev, "failed to request resources: %d\n", ret);
 402 +               return ret;
 403 +       }
 404 +
 405 +       phy->phy.dev = phy->dev;
 406 +       phy->phy.label = "qca-uni-ssphy";
 407 +       phy->phy.init = qca_uni_ss_phy_init;
 408 +       phy->phy.shutdown = qca_uni_ss_phy_shutdown;
 409 +       phy->phy.type = USB_PHY_TYPE_USB3;
 410 +
 411 +       ret = usb_add_phy_dev(&phy->phy);
 412 +       return ret;
 413 +}
 414 +
 415 +static struct platform_driver qca_uni_ss_driver = {
 416 +       .probe = qca_uni_ss_probe,
 417 +       .remove = qca_uni_ss_remove,
 418 +       .driver = {
 419 +               .name = "qca-uni-ssphy",
 420 +               .owner = THIS_MODULE,
 421 +               .of_match_table = qca_uni_ss_id_table,
 422 +       },
 423 +};
 424 +
 425 +module_platform_driver(qca_uni_ss_driver);
 426 +
 427 +MODULE_ALIAS("platform:qca-uni-ssphy");
 428 +MODULE_LICENSE("Dual BSD/GPL");
 429 +MODULE_DESCRIPTION("USB3 QCA UNI SSPHY driver");