Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 1 | /* linux/drivers/usb/phy/samsung-usbphy.c |
| 2 | * |
| 3 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
| 5 | * |
| 6 | * Author: Praveen Paneri <p.paneri@samsung.com> |
| 7 | * |
| 8 | * Samsung USB2.0 High-speed OTG transceiver, talks to S3C HS OTG controller |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/clk.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/err.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/of.h> |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 27 | #include <linux/of_address.h> |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 28 | #include <linux/usb/otg.h> |
| 29 | #include <linux/platform_data/samsung-usbphy.h> |
| 30 | |
| 31 | /* Register definitions */ |
| 32 | |
| 33 | #define SAMSUNG_PHYPWR (0x00) |
| 34 | |
| 35 | #define PHYPWR_NORMAL_MASK (0x19 << 0) |
| 36 | #define PHYPWR_OTG_DISABLE (0x1 << 4) |
| 37 | #define PHYPWR_ANALOG_POWERDOWN (0x1 << 3) |
| 38 | #define PHYPWR_FORCE_SUSPEND (0x1 << 1) |
| 39 | /* For Exynos4 */ |
| 40 | #define PHYPWR_NORMAL_MASK_PHY0 (0x39 << 0) |
| 41 | #define PHYPWR_SLEEP_PHY0 (0x1 << 5) |
| 42 | |
| 43 | #define SAMSUNG_PHYCLK (0x04) |
| 44 | |
| 45 | #define PHYCLK_MODE_USB11 (0x1 << 6) |
| 46 | #define PHYCLK_EXT_OSC (0x1 << 5) |
| 47 | #define PHYCLK_COMMON_ON_N (0x1 << 4) |
| 48 | #define PHYCLK_ID_PULL (0x1 << 2) |
| 49 | #define PHYCLK_CLKSEL_MASK (0x3 << 0) |
| 50 | #define PHYCLK_CLKSEL_48M (0x0 << 0) |
| 51 | #define PHYCLK_CLKSEL_12M (0x2 << 0) |
| 52 | #define PHYCLK_CLKSEL_24M (0x3 << 0) |
| 53 | |
| 54 | #define SAMSUNG_RSTCON (0x08) |
| 55 | |
| 56 | #define RSTCON_PHYLINK_SWRST (0x1 << 2) |
| 57 | #define RSTCON_HLINK_SWRST (0x1 << 1) |
| 58 | #define RSTCON_SWRST (0x1 << 0) |
| 59 | |
| 60 | #ifndef MHZ |
| 61 | #define MHZ (1000*1000) |
| 62 | #endif |
| 63 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 64 | #define S3C64XX_USBPHY_ENABLE (0x1 << 16) |
| 65 | #define EXYNOS_USBPHY_ENABLE (0x1 << 0) |
| 66 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 67 | enum samsung_cpu_type { |
| 68 | TYPE_S3C64XX, |
| 69 | TYPE_EXYNOS4210, |
| 70 | }; |
| 71 | |
| 72 | /* |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 73 | * struct samsung_usbphy_drvdata - driver data for various SoC variants |
| 74 | * @cpu_type: machine identifier |
| 75 | * @devphy_en_mask: device phy enable mask for PHY CONTROL register |
| 76 | * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from |
| 77 | * mapped address of system controller. |
| 78 | * |
| 79 | * Here we have a separate mask for device type phy. |
| 80 | * Having different masks for host and device type phy helps |
| 81 | * in setting independent masks in case of SoCs like S5PV210, |
| 82 | * in which PHY0 and PHY1 enable bits belong to same register |
| 83 | * placed at position 0 and 1 respectively. |
| 84 | * Although for newer SoCs like exynos these bits belong to |
| 85 | * different registers altogether placed at position 0. |
| 86 | */ |
| 87 | struct samsung_usbphy_drvdata { |
| 88 | int cpu_type; |
| 89 | int devphy_en_mask; |
| 90 | u32 devphy_reg_offset; |
| 91 | }; |
| 92 | |
| 93 | /* |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 94 | * struct samsung_usbphy - transceiver driver state |
| 95 | * @phy: transceiver structure |
| 96 | * @plat: platform data |
| 97 | * @dev: The parent device supplied to the probe function |
| 98 | * @clk: usb phy clock |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 99 | * @regs: usb phy controller registers memory base |
| 100 | * @pmuregs: USB device PHY_CONTROL register memory base |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 101 | * @ref_clk_freq: reference clock frequency selection |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 102 | * @drv_data: driver data available for different SoCs |
| 103 | * @lock: lock for phy operations |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 104 | */ |
| 105 | struct samsung_usbphy { |
| 106 | struct usb_phy phy; |
| 107 | struct samsung_usbphy_data *plat; |
| 108 | struct device *dev; |
| 109 | struct clk *clk; |
| 110 | void __iomem *regs; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 111 | void __iomem *pmuregs; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 112 | int ref_clk_freq; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 113 | const struct samsung_usbphy_drvdata *drv_data; |
| 114 | spinlock_t lock; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 115 | }; |
| 116 | |
| 117 | #define phy_to_sphy(x) container_of((x), struct samsung_usbphy, phy) |
| 118 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 119 | static int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy) |
| 120 | { |
| 121 | struct device_node *usbphy_sys; |
| 122 | |
| 123 | /* Getting node for system controller interface for usb-phy */ |
| 124 | usbphy_sys = of_get_child_by_name(sphy->dev->of_node, "usbphy-sys"); |
| 125 | if (!usbphy_sys) { |
| 126 | dev_err(sphy->dev, "No sys-controller interface for usb-phy\n"); |
| 127 | return -ENODEV; |
| 128 | } |
| 129 | |
| 130 | sphy->pmuregs = of_iomap(usbphy_sys, 0); |
| 131 | |
| 132 | of_node_put(usbphy_sys); |
| 133 | |
| 134 | if (sphy->pmuregs == NULL) { |
| 135 | dev_err(sphy->dev, "Can't get usb-phy pmu control register\n"); |
| 136 | return -ENODEV; |
| 137 | } |
| 138 | |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Set isolation here for phy. |
| 144 | * Here 'on = true' would mean USB PHY block is isolated, hence |
| 145 | * de-activated and vice-versa. |
| 146 | */ |
| 147 | static void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) |
| 148 | { |
| 149 | void __iomem *reg; |
| 150 | u32 reg_val; |
| 151 | u32 en_mask; |
| 152 | |
| 153 | if (!sphy->pmuregs) { |
| 154 | dev_warn(sphy->dev, "Can't set pmu isolation\n"); |
| 155 | return; |
| 156 | } |
| 157 | |
| 158 | reg = sphy->pmuregs + sphy->drv_data->devphy_reg_offset; |
| 159 | en_mask = sphy->drv_data->devphy_en_mask; |
| 160 | |
| 161 | reg_val = readl(reg); |
| 162 | |
| 163 | if (on) |
| 164 | reg_val &= ~en_mask; |
| 165 | else |
| 166 | reg_val |= en_mask; |
| 167 | |
| 168 | writel(reg_val, reg); |
| 169 | } |
| 170 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 171 | /* |
| 172 | * Returns reference clock frequency selection value |
| 173 | */ |
| 174 | static int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy) |
| 175 | { |
| 176 | struct clk *ref_clk; |
| 177 | int refclk_freq = 0; |
| 178 | |
| 179 | ref_clk = clk_get(sphy->dev, "xusbxti"); |
| 180 | if (IS_ERR(ref_clk)) { |
| 181 | dev_err(sphy->dev, "Failed to get reference clock\n"); |
| 182 | return PTR_ERR(ref_clk); |
| 183 | } |
| 184 | |
| 185 | switch (clk_get_rate(ref_clk)) { |
| 186 | case 12 * MHZ: |
| 187 | refclk_freq = PHYCLK_CLKSEL_12M; |
| 188 | break; |
| 189 | case 24 * MHZ: |
| 190 | refclk_freq = PHYCLK_CLKSEL_24M; |
| 191 | break; |
| 192 | case 48 * MHZ: |
| 193 | refclk_freq = PHYCLK_CLKSEL_48M; |
| 194 | break; |
| 195 | default: |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 196 | if (sphy->drv_data->cpu_type == TYPE_S3C64XX) |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 197 | refclk_freq = PHYCLK_CLKSEL_48M; |
| 198 | else |
| 199 | refclk_freq = PHYCLK_CLKSEL_24M; |
| 200 | break; |
| 201 | } |
| 202 | clk_put(ref_clk); |
| 203 | |
| 204 | return refclk_freq; |
| 205 | } |
| 206 | |
| 207 | static void samsung_usbphy_enable(struct samsung_usbphy *sphy) |
| 208 | { |
| 209 | void __iomem *regs = sphy->regs; |
| 210 | u32 phypwr; |
| 211 | u32 phyclk; |
| 212 | u32 rstcon; |
| 213 | |
| 214 | /* set clock frequency for PLL */ |
| 215 | phyclk = sphy->ref_clk_freq; |
| 216 | phypwr = readl(regs + SAMSUNG_PHYPWR); |
| 217 | rstcon = readl(regs + SAMSUNG_RSTCON); |
| 218 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 219 | switch (sphy->drv_data->cpu_type) { |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 220 | case TYPE_S3C64XX: |
| 221 | phyclk &= ~PHYCLK_COMMON_ON_N; |
| 222 | phypwr &= ~PHYPWR_NORMAL_MASK; |
| 223 | rstcon |= RSTCON_SWRST; |
| 224 | break; |
| 225 | case TYPE_EXYNOS4210: |
| 226 | phypwr &= ~PHYPWR_NORMAL_MASK_PHY0; |
| 227 | rstcon |= RSTCON_SWRST; |
| 228 | default: |
| 229 | break; |
| 230 | } |
| 231 | |
| 232 | writel(phyclk, regs + SAMSUNG_PHYCLK); |
| 233 | /* Configure PHY0 for normal operation*/ |
| 234 | writel(phypwr, regs + SAMSUNG_PHYPWR); |
| 235 | /* reset all ports of PHY and Link */ |
| 236 | writel(rstcon, regs + SAMSUNG_RSTCON); |
| 237 | udelay(10); |
| 238 | rstcon &= ~RSTCON_SWRST; |
| 239 | writel(rstcon, regs + SAMSUNG_RSTCON); |
| 240 | } |
| 241 | |
| 242 | static void samsung_usbphy_disable(struct samsung_usbphy *sphy) |
| 243 | { |
| 244 | void __iomem *regs = sphy->regs; |
| 245 | u32 phypwr; |
| 246 | |
| 247 | phypwr = readl(regs + SAMSUNG_PHYPWR); |
| 248 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 249 | switch (sphy->drv_data->cpu_type) { |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 250 | case TYPE_S3C64XX: |
| 251 | phypwr |= PHYPWR_NORMAL_MASK; |
| 252 | break; |
| 253 | case TYPE_EXYNOS4210: |
| 254 | phypwr |= PHYPWR_NORMAL_MASK_PHY0; |
| 255 | default: |
| 256 | break; |
| 257 | } |
| 258 | |
| 259 | /* Disable analog and otg block power */ |
| 260 | writel(phypwr, regs + SAMSUNG_PHYPWR); |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * The function passed to the usb driver for phy initialization |
| 265 | */ |
| 266 | static int samsung_usbphy_init(struct usb_phy *phy) |
| 267 | { |
| 268 | struct samsung_usbphy *sphy; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 269 | unsigned long flags; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 270 | int ret = 0; |
| 271 | |
| 272 | sphy = phy_to_sphy(phy); |
| 273 | |
| 274 | /* Enable the phy clock */ |
| 275 | ret = clk_prepare_enable(sphy->clk); |
| 276 | if (ret) { |
| 277 | dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__); |
| 278 | return ret; |
| 279 | } |
| 280 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 281 | spin_lock_irqsave(&sphy->lock, flags); |
| 282 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 283 | /* Disable phy isolation */ |
| 284 | if (sphy->plat && sphy->plat->pmu_isolation) |
| 285 | sphy->plat->pmu_isolation(false); |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 286 | else |
| 287 | samsung_usbphy_set_isolation(sphy, false); |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 288 | |
| 289 | /* Initialize usb phy registers */ |
| 290 | samsung_usbphy_enable(sphy); |
| 291 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 292 | spin_unlock_irqrestore(&sphy->lock, flags); |
| 293 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 294 | /* Disable the phy clock */ |
| 295 | clk_disable_unprepare(sphy->clk); |
| 296 | return ret; |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * The function passed to the usb driver for phy shutdown |
| 301 | */ |
| 302 | static void samsung_usbphy_shutdown(struct usb_phy *phy) |
| 303 | { |
| 304 | struct samsung_usbphy *sphy; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 305 | unsigned long flags; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 306 | |
| 307 | sphy = phy_to_sphy(phy); |
| 308 | |
| 309 | if (clk_prepare_enable(sphy->clk)) { |
| 310 | dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__); |
| 311 | return; |
| 312 | } |
| 313 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 314 | spin_lock_irqsave(&sphy->lock, flags); |
| 315 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 316 | /* De-initialize usb phy registers */ |
| 317 | samsung_usbphy_disable(sphy); |
| 318 | |
| 319 | /* Enable phy isolation */ |
| 320 | if (sphy->plat && sphy->plat->pmu_isolation) |
| 321 | sphy->plat->pmu_isolation(true); |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 322 | else |
| 323 | samsung_usbphy_set_isolation(sphy, true); |
| 324 | |
| 325 | spin_unlock_irqrestore(&sphy->lock, flags); |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 326 | |
| 327 | clk_disable_unprepare(sphy->clk); |
| 328 | } |
| 329 | |
| 330 | static const struct of_device_id samsung_usbphy_dt_match[]; |
| 331 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 332 | static inline const struct samsung_usbphy_drvdata |
| 333 | *samsung_usbphy_get_driver_data(struct platform_device *pdev) |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 334 | { |
| 335 | if (pdev->dev.of_node) { |
| 336 | const struct of_device_id *match; |
| 337 | match = of_match_node(samsung_usbphy_dt_match, |
| 338 | pdev->dev.of_node); |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 339 | return match->data; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 340 | } |
| 341 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 342 | return (struct samsung_usbphy_drvdata *) |
| 343 | platform_get_device_id(pdev)->driver_data; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | static int __devinit samsung_usbphy_probe(struct platform_device *pdev) |
| 347 | { |
| 348 | struct samsung_usbphy *sphy; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 349 | struct samsung_usbphy_data *pdata = pdev->dev.platform_data; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 350 | struct device *dev = &pdev->dev; |
| 351 | struct resource *phy_mem; |
| 352 | void __iomem *phy_base; |
| 353 | struct clk *clk; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 354 | int ret; |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 355 | |
| 356 | phy_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 357 | if (!phy_mem) { |
| 358 | dev_err(dev, "%s: missing mem resource\n", __func__); |
| 359 | return -ENODEV; |
| 360 | } |
| 361 | |
| 362 | phy_base = devm_request_and_ioremap(dev, phy_mem); |
| 363 | if (!phy_base) { |
| 364 | dev_err(dev, "%s: register mapping failed\n", __func__); |
| 365 | return -ENXIO; |
| 366 | } |
| 367 | |
| 368 | sphy = devm_kzalloc(dev, sizeof(*sphy), GFP_KERNEL); |
| 369 | if (!sphy) |
| 370 | return -ENOMEM; |
| 371 | |
| 372 | clk = devm_clk_get(dev, "otg"); |
| 373 | if (IS_ERR(clk)) { |
| 374 | dev_err(dev, "Failed to get otg clock\n"); |
| 375 | return PTR_ERR(clk); |
| 376 | } |
| 377 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 378 | sphy->dev = dev; |
| 379 | |
| 380 | if (dev->of_node) { |
| 381 | ret = samsung_usbphy_parse_dt(sphy); |
| 382 | if (ret < 0) |
| 383 | return ret; |
| 384 | } else { |
| 385 | if (!pdata) { |
| 386 | dev_err(dev, "no platform data specified\n"); |
| 387 | return -EINVAL; |
| 388 | } |
| 389 | } |
| 390 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 391 | sphy->plat = pdata; |
| 392 | sphy->regs = phy_base; |
| 393 | sphy->clk = clk; |
| 394 | sphy->phy.dev = sphy->dev; |
| 395 | sphy->phy.label = "samsung-usbphy"; |
| 396 | sphy->phy.init = samsung_usbphy_init; |
| 397 | sphy->phy.shutdown = samsung_usbphy_shutdown; |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 398 | sphy->drv_data = samsung_usbphy_get_driver_data(pdev); |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 399 | sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); |
| 400 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 401 | spin_lock_init(&sphy->lock); |
| 402 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 403 | platform_set_drvdata(pdev, sphy); |
| 404 | |
| 405 | return usb_add_phy(&sphy->phy, USB_PHY_TYPE_USB2); |
| 406 | } |
| 407 | |
| 408 | static int __exit samsung_usbphy_remove(struct platform_device *pdev) |
| 409 | { |
| 410 | struct samsung_usbphy *sphy = platform_get_drvdata(pdev); |
| 411 | |
| 412 | usb_remove_phy(&sphy->phy); |
| 413 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 414 | if (sphy->pmuregs) |
| 415 | iounmap(sphy->pmuregs); |
| 416 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 417 | return 0; |
| 418 | } |
| 419 | |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 420 | static const struct samsung_usbphy_drvdata usbphy_s3c64xx = { |
| 421 | .cpu_type = TYPE_S3C64XX, |
| 422 | .devphy_en_mask = S3C64XX_USBPHY_ENABLE, |
| 423 | }; |
| 424 | |
| 425 | static const struct samsung_usbphy_drvdata usbphy_exynos4 = { |
| 426 | .cpu_type = TYPE_EXYNOS4210, |
| 427 | .devphy_en_mask = EXYNOS_USBPHY_ENABLE, |
| 428 | }; |
| 429 | |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 430 | #ifdef CONFIG_OF |
| 431 | static const struct of_device_id samsung_usbphy_dt_match[] = { |
| 432 | { |
| 433 | .compatible = "samsung,s3c64xx-usbphy", |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 434 | .data = &usbphy_s3c64xx, |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 435 | }, { |
| 436 | .compatible = "samsung,exynos4210-usbphy", |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 437 | .data = &usbphy_exynos4, |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 438 | }, |
| 439 | {}, |
| 440 | }; |
| 441 | MODULE_DEVICE_TABLE(of, samsung_usbphy_dt_match); |
| 442 | #endif |
| 443 | |
| 444 | static struct platform_device_id samsung_usbphy_driver_ids[] = { |
| 445 | { |
| 446 | .name = "s3c64xx-usbphy", |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 447 | .driver_data = (unsigned long)&usbphy_s3c64xx, |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 448 | }, { |
| 449 | .name = "exynos4210-usbphy", |
Vivek Gautam | 69f0946 | 2013-01-15 11:40:25 +0530 | [diff] [blame^] | 450 | .driver_data = (unsigned long)&usbphy_exynos4, |
Praveen Paneri | 337dc3a | 2012-11-23 16:03:06 +0530 | [diff] [blame] | 451 | }, |
| 452 | {}, |
| 453 | }; |
| 454 | |
| 455 | MODULE_DEVICE_TABLE(platform, samsung_usbphy_driver_ids); |
| 456 | |
| 457 | static struct platform_driver samsung_usbphy_driver = { |
| 458 | .probe = samsung_usbphy_probe, |
| 459 | .remove = __devexit_p(samsung_usbphy_remove), |
| 460 | .id_table = samsung_usbphy_driver_ids, |
| 461 | .driver = { |
| 462 | .name = "samsung-usbphy", |
| 463 | .owner = THIS_MODULE, |
| 464 | .of_match_table = of_match_ptr(samsung_usbphy_dt_match), |
| 465 | }, |
| 466 | }; |
| 467 | |
| 468 | module_platform_driver(samsung_usbphy_driver); |
| 469 | |
| 470 | MODULE_DESCRIPTION("Samsung USB phy controller"); |
| 471 | MODULE_AUTHOR("Praveen Paneri <p.paneri@samsung.com>"); |
| 472 | MODULE_LICENSE("GPL"); |
| 473 | MODULE_ALIAS("platform:samsung-usbphy"); |