Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Setup platform devices needed by the Freescale multi-port host |
| 3 | * and/or dual-role USB controller modules based on the description |
| 4 | * in flat device tree. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/fsl_devices.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/of_platform.h> |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 18 | #include <linux/clk.h> |
Paul Gortmaker | 6eb0de8 | 2011-07-03 16:09:31 -0400 | [diff] [blame] | 19 | #include <linux/module.h> |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 20 | |
| 21 | struct fsl_usb2_dev_data { |
| 22 | char *dr_mode; /* controller mode */ |
| 23 | char *drivers[3]; /* drivers to instantiate for this mode */ |
| 24 | enum fsl_usb2_operating_modes op_mode; /* operating mode */ |
| 25 | }; |
| 26 | |
Bill Pemberton | d3608b6 | 2012-11-19 13:24:34 -0500 | [diff] [blame] | 27 | struct fsl_usb2_dev_data dr_mode_data[] = { |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 28 | { |
| 29 | .dr_mode = "host", |
| 30 | .drivers = { "fsl-ehci", NULL, NULL, }, |
| 31 | .op_mode = FSL_USB2_DR_HOST, |
| 32 | }, |
| 33 | { |
| 34 | .dr_mode = "otg", |
| 35 | .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", }, |
| 36 | .op_mode = FSL_USB2_DR_OTG, |
| 37 | }, |
| 38 | { |
| 39 | .dr_mode = "peripheral", |
| 40 | .drivers = { "fsl-usb2-udc", NULL, NULL, }, |
| 41 | .op_mode = FSL_USB2_DR_DEVICE, |
| 42 | }, |
| 43 | }; |
| 44 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 45 | struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np) |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 46 | { |
| 47 | const unsigned char *prop; |
| 48 | int i; |
| 49 | |
| 50 | prop = of_get_property(np, "dr_mode", NULL); |
| 51 | if (prop) { |
| 52 | for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) { |
| 53 | if (!strcmp(prop, dr_mode_data[i].dr_mode)) |
| 54 | return &dr_mode_data[i]; |
| 55 | } |
| 56 | } |
| 57 | pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n", |
| 58 | np->full_name); |
| 59 | return &dr_mode_data[0]; /* mode not specified, use host */ |
| 60 | } |
| 61 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 62 | static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 63 | { |
| 64 | if (!phy_type) |
| 65 | return FSL_USB2_PHY_NONE; |
| 66 | if (!strcasecmp(phy_type, "ulpi")) |
| 67 | return FSL_USB2_PHY_ULPI; |
| 68 | if (!strcasecmp(phy_type, "utmi")) |
| 69 | return FSL_USB2_PHY_UTMI; |
| 70 | if (!strcasecmp(phy_type, "utmi_wide")) |
| 71 | return FSL_USB2_PHY_UTMI_WIDE; |
| 72 | if (!strcasecmp(phy_type, "serial")) |
| 73 | return FSL_USB2_PHY_SERIAL; |
| 74 | |
| 75 | return FSL_USB2_PHY_NONE; |
| 76 | } |
| 77 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 78 | struct platform_device *fsl_usb2_device_register( |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 79 | struct platform_device *ofdev, |
| 80 | struct fsl_usb2_platform_data *pdata, |
| 81 | const char *name, int id) |
| 82 | { |
| 83 | struct platform_device *pdev; |
| 84 | const struct resource *res = ofdev->resource; |
| 85 | unsigned int num = ofdev->num_resources; |
| 86 | int retval; |
| 87 | |
| 88 | pdev = platform_device_alloc(name, id); |
| 89 | if (!pdev) { |
| 90 | retval = -ENOMEM; |
| 91 | goto error; |
| 92 | } |
| 93 | |
| 94 | pdev->dev.parent = &ofdev->dev; |
| 95 | |
| 96 | pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 97 | *pdev->dev.dma_mask = *ofdev->dev.dma_mask; |
| 98 | |
| 99 | retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); |
| 100 | if (retval) |
| 101 | goto error; |
| 102 | |
| 103 | if (num) { |
| 104 | retval = platform_device_add_resources(pdev, res, num); |
| 105 | if (retval) |
| 106 | goto error; |
| 107 | } |
| 108 | |
| 109 | retval = platform_device_add(pdev); |
| 110 | if (retval) |
| 111 | goto error; |
| 112 | |
| 113 | return pdev; |
| 114 | |
| 115 | error: |
| 116 | platform_device_put(pdev); |
| 117 | return ERR_PTR(retval); |
| 118 | } |
| 119 | |
| 120 | static const struct of_device_id fsl_usb2_mph_dr_of_match[]; |
| 121 | |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 122 | static int usb_get_ver_info(struct device_node *np) |
| 123 | { |
| 124 | int ver = -1; |
| 125 | |
| 126 | /* |
| 127 | * returns 1 for usb controller version 1.6 |
| 128 | * returns 2 for usb controller version 2.2 |
| 129 | * returns 0 otherwise |
| 130 | */ |
| 131 | if (of_device_is_compatible(np, "fsl-usb2-dr")) { |
| 132 | if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6")) |
| 133 | ver = FSL_USB_VER_1_6; |
| 134 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2")) |
| 135 | ver = FSL_USB_VER_2_2; |
Ramneek Mehresh | e98b6a4 | 2012-09-19 14:18:45 +0530 | [diff] [blame] | 136 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4")) |
| 137 | ver = FSL_USB_VER_2_4; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 138 | else /* for previous controller versions */ |
| 139 | ver = FSL_USB_VER_OLD; |
| 140 | |
| 141 | if (ver > -1) |
| 142 | return ver; |
| 143 | } |
| 144 | |
Anatolij Gustschin | 7c1029b | 2012-12-04 14:23:21 +0100 | [diff] [blame] | 145 | if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr")) |
| 146 | return FSL_USB_VER_OLD; |
| 147 | |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 148 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { |
| 149 | if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6")) |
| 150 | ver = FSL_USB_VER_1_6; |
| 151 | else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2")) |
| 152 | ver = FSL_USB_VER_2_2; |
| 153 | else /* for previous controller versions */ |
| 154 | ver = FSL_USB_VER_OLD; |
| 155 | } |
| 156 | |
| 157 | return ver; |
| 158 | } |
| 159 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 160 | static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 161 | { |
| 162 | struct device_node *np = ofdev->dev.of_node; |
| 163 | struct platform_device *usb_dev; |
| 164 | struct fsl_usb2_platform_data data, *pdata; |
| 165 | struct fsl_usb2_dev_data *dev_data; |
| 166 | const struct of_device_id *match; |
| 167 | const unsigned char *prop; |
| 168 | static unsigned int idx; |
| 169 | int i; |
| 170 | |
| 171 | if (!of_device_is_available(np)) |
| 172 | return -ENODEV; |
| 173 | |
| 174 | match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); |
| 175 | if (!match) |
| 176 | return -ENODEV; |
| 177 | |
| 178 | pdata = &data; |
| 179 | if (match->data) |
| 180 | memcpy(pdata, match->data, sizeof(data)); |
| 181 | else |
| 182 | memset(pdata, 0, sizeof(data)); |
| 183 | |
| 184 | dev_data = get_dr_mode_data(np); |
| 185 | |
| 186 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { |
| 187 | if (of_get_property(np, "port0", NULL)) |
| 188 | pdata->port_enables |= FSL_USB2_PORT0_ENABLED; |
| 189 | |
| 190 | if (of_get_property(np, "port1", NULL)) |
| 191 | pdata->port_enables |= FSL_USB2_PORT1_ENABLED; |
| 192 | |
| 193 | pdata->operating_mode = FSL_USB2_MPH_HOST; |
| 194 | } else { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 195 | if (of_get_property(np, "fsl,invert-drvvbus", NULL)) |
| 196 | pdata->invert_drvvbus = 1; |
| 197 | |
| 198 | if (of_get_property(np, "fsl,invert-pwr-fault", NULL)) |
| 199 | pdata->invert_pwr_fault = 1; |
| 200 | |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 201 | /* setup mode selected in the device tree */ |
| 202 | pdata->operating_mode = dev_data->op_mode; |
| 203 | } |
| 204 | |
| 205 | prop = of_get_property(np, "phy_type", NULL); |
| 206 | pdata->phy_mode = determine_usb_phy(prop); |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 207 | pdata->controller_ver = usb_get_ver_info(np); |
| 208 | |
| 209 | if (pdata->have_sysif_regs) { |
| 210 | if (pdata->controller_ver < 0) { |
| 211 | dev_warn(&ofdev->dev, "Could not get controller version\n"); |
| 212 | return -ENODEV; |
| 213 | } |
| 214 | } |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 215 | |
| 216 | for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { |
| 217 | if (!dev_data->drivers[i]) |
| 218 | continue; |
| 219 | usb_dev = fsl_usb2_device_register(ofdev, pdata, |
| 220 | dev_data->drivers[i], idx); |
| 221 | if (IS_ERR(usb_dev)) { |
| 222 | dev_err(&ofdev->dev, "Can't register usb device\n"); |
| 223 | return PTR_ERR(usb_dev); |
| 224 | } |
| 225 | } |
| 226 | idx++; |
| 227 | return 0; |
| 228 | } |
| 229 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 230 | static int __unregister_subdev(struct device *dev, void *d) |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 231 | { |
| 232 | platform_device_unregister(to_platform_device(dev)); |
| 233 | return 0; |
| 234 | } |
| 235 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 236 | static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 237 | { |
| 238 | device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); |
| 239 | return 0; |
| 240 | } |
| 241 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 242 | #ifdef CONFIG_PPC_MPC512x |
| 243 | |
| 244 | #define USBGENCTRL 0x200 /* NOTE: big endian */ |
| 245 | #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */ |
| 246 | #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/ |
| 247 | #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */ |
| 248 | #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */ |
| 249 | #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */ |
| 250 | #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */ |
| 251 | |
| 252 | #define ISIPHYCTRL 0x204 /* NOTE: big endian */ |
| 253 | #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */ |
| 254 | #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */ |
| 255 | #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */ |
| 256 | #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */ |
| 257 | #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */ |
| 258 | |
| 259 | int fsl_usb2_mpc5121_init(struct platform_device *pdev) |
| 260 | { |
| 261 | struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; |
| 262 | struct clk *clk; |
| 263 | char clk_name[10]; |
| 264 | int base, clk_num; |
| 265 | |
| 266 | base = pdev->resource->start & 0xf000; |
| 267 | if (base == 0x3000) |
| 268 | clk_num = 1; |
| 269 | else if (base == 0x4000) |
| 270 | clk_num = 2; |
| 271 | else |
| 272 | return -ENODEV; |
| 273 | |
| 274 | snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num); |
| 275 | clk = clk_get(&pdev->dev, clk_name); |
| 276 | if (IS_ERR(clk)) { |
| 277 | dev_err(&pdev->dev, "failed to get clk\n"); |
| 278 | return PTR_ERR(clk); |
| 279 | } |
| 280 | |
| 281 | clk_enable(clk); |
| 282 | pdata->clk = clk; |
| 283 | |
| 284 | if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { |
| 285 | u32 reg = 0; |
| 286 | |
| 287 | if (pdata->invert_drvvbus) |
| 288 | reg |= GC_PPP; |
| 289 | |
| 290 | if (pdata->invert_pwr_fault) |
| 291 | reg |= GC_PFP; |
| 292 | |
| 293 | out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE); |
| 294 | out_be32(pdata->regs + USBGENCTRL, reg); |
| 295 | } |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) |
| 300 | { |
| 301 | struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; |
| 302 | |
| 303 | pdata->regs = NULL; |
| 304 | |
| 305 | if (pdata->clk) { |
| 306 | clk_disable(pdata->clk); |
| 307 | clk_put(pdata->clk); |
| 308 | } |
| 309 | } |
| 310 | |
Peter Tyser | cc604dd | 2011-01-10 17:34:14 -0600 | [diff] [blame] | 311 | static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 312 | .big_endian_desc = 1, |
| 313 | .big_endian_mmio = 1, |
| 314 | .es = 1, |
Peter Tyser | cc604dd | 2011-01-10 17:34:14 -0600 | [diff] [blame] | 315 | .have_sysif_regs = 0, |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 316 | .le_setup_buf = 1, |
| 317 | .init = fsl_usb2_mpc5121_init, |
| 318 | .exit = fsl_usb2_mpc5121_exit, |
| 319 | }; |
| 320 | #endif /* CONFIG_PPC_MPC512x */ |
| 321 | |
Peter Tyser | cc604dd | 2011-01-10 17:34:14 -0600 | [diff] [blame] | 322 | static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = { |
| 323 | .have_sysif_regs = 1, |
| 324 | }; |
| 325 | |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 326 | static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { |
Peter Tyser | cc604dd | 2011-01-10 17:34:14 -0600 | [diff] [blame] | 327 | { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, }, |
| 328 | { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, }, |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 329 | #ifdef CONFIG_PPC_MPC512x |
| 330 | { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, |
| 331 | #endif |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 332 | {}, |
| 333 | }; |
| 334 | |
| 335 | static struct platform_driver fsl_usb2_mph_dr_driver = { |
| 336 | .driver = { |
| 337 | .name = "fsl-usb2-mph-dr", |
| 338 | .owner = THIS_MODULE, |
| 339 | .of_match_table = fsl_usb2_mph_dr_of_match, |
| 340 | }, |
| 341 | .probe = fsl_usb2_mph_dr_of_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 342 | .remove = fsl_usb2_mph_dr_of_remove, |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 343 | }; |
| 344 | |
Axel Lin | cc27c96 | 2011-11-27 20:16:27 +0800 | [diff] [blame] | 345 | module_platform_driver(fsl_usb2_mph_dr_driver); |
Anatolij Gustschin | 126512e | 2010-09-28 20:55:20 +0200 | [diff] [blame] | 346 | |
| 347 | MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); |
| 348 | MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); |
| 349 | MODULE_LICENSE("GPL"); |