Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 1 | /* |
| 2 | * phy-ti-pipe3 - PIPE3 PHY driver. |
| 3 | * |
| 4 | * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * Author: Kishon Vijay Abraham I <kishon@ti.com> |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/phy/phy.h> |
| 23 | #include <linux/of.h> |
| 24 | #include <linux/clk.h> |
| 25 | #include <linux/err.h> |
| 26 | #include <linux/io.h> |
| 27 | #include <linux/pm_runtime.h> |
| 28 | #include <linux/delay.h> |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 29 | #include <linux/phy/omap_control_phy.h> |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 30 | #include <linux/of_platform.h> |
| 31 | |
| 32 | #define PLL_STATUS 0x00000004 |
| 33 | #define PLL_GO 0x00000008 |
| 34 | #define PLL_CONFIGURATION1 0x0000000C |
| 35 | #define PLL_CONFIGURATION2 0x00000010 |
| 36 | #define PLL_CONFIGURATION3 0x00000014 |
| 37 | #define PLL_CONFIGURATION4 0x00000020 |
| 38 | |
| 39 | #define PLL_REGM_MASK 0x001FFE00 |
| 40 | #define PLL_REGM_SHIFT 0x9 |
| 41 | #define PLL_REGM_F_MASK 0x0003FFFF |
| 42 | #define PLL_REGM_F_SHIFT 0x0 |
| 43 | #define PLL_REGN_MASK 0x000001FE |
| 44 | #define PLL_REGN_SHIFT 0x1 |
| 45 | #define PLL_SELFREQDCO_MASK 0x0000000E |
| 46 | #define PLL_SELFREQDCO_SHIFT 0x1 |
| 47 | #define PLL_SD_MASK 0x0003FC00 |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 48 | #define PLL_SD_SHIFT 10 |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 49 | #define SET_PLL_GO 0x1 |
| 50 | #define PLL_TICOPWDN 0x10000 |
| 51 | #define PLL_LOCK 0x2 |
| 52 | #define PLL_IDLE 0x1 |
| 53 | |
| 54 | /* |
| 55 | * This is an Empirical value that works, need to confirm the actual |
| 56 | * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status |
| 57 | * to be correctly reflected in the PIPE3PHY_PLL_STATUS register. |
| 58 | */ |
| 59 | # define PLL_IDLE_TIME 100; |
| 60 | |
| 61 | struct pipe3_dpll_params { |
| 62 | u16 m; |
| 63 | u8 n; |
| 64 | u8 freq:3; |
| 65 | u8 sd; |
| 66 | u32 mf; |
| 67 | }; |
| 68 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 69 | struct pipe3_dpll_map { |
| 70 | unsigned long rate; |
| 71 | struct pipe3_dpll_params params; |
| 72 | }; |
| 73 | |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 74 | struct ti_pipe3 { |
| 75 | void __iomem *pll_ctrl_base; |
| 76 | struct device *dev; |
| 77 | struct device *control_dev; |
| 78 | struct clk *wkupclk; |
| 79 | struct clk *sys_clk; |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 80 | struct clk *refclk; |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 81 | struct pipe3_dpll_map *dpll_map; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 82 | }; |
| 83 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 84 | static struct pipe3_dpll_map dpll_map_usb[] = { |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 85 | {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ |
| 86 | {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ |
| 87 | {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ |
| 88 | {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */ |
| 89 | {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */ |
| 90 | {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 91 | { }, /* Terminator */ |
| 92 | }; |
| 93 | |
| 94 | static struct pipe3_dpll_map dpll_map_sata[] = { |
| 95 | {12000000, {1000, 7, 4, 6, 0} }, /* 12 MHz */ |
| 96 | {16800000, {714, 7, 4, 6, 0} }, /* 16.8 MHz */ |
| 97 | {19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */ |
| 98 | {20000000, {600, 7, 4, 6, 0} }, /* 20 MHz */ |
| 99 | {26000000, {461, 7, 4, 6, 0} }, /* 26 MHz */ |
| 100 | {38400000, {312, 7, 4, 6, 0} }, /* 38.4 MHz */ |
| 101 | { }, /* Terminator */ |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | static inline u32 ti_pipe3_readl(void __iomem *addr, unsigned offset) |
| 105 | { |
| 106 | return __raw_readl(addr + offset); |
| 107 | } |
| 108 | |
| 109 | static inline void ti_pipe3_writel(void __iomem *addr, unsigned offset, |
| 110 | u32 data) |
| 111 | { |
| 112 | __raw_writel(data, addr + offset); |
| 113 | } |
| 114 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 115 | static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(struct ti_pipe3 *phy) |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 116 | { |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 117 | unsigned long rate; |
| 118 | struct pipe3_dpll_map *dpll_map = phy->dpll_map; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 119 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 120 | rate = clk_get_rate(phy->sys_clk); |
| 121 | |
| 122 | for (; dpll_map->rate; dpll_map++) { |
| 123 | if (rate == dpll_map->rate) |
| 124 | return &dpll_map->params; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 125 | } |
| 126 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 127 | dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate); |
| 128 | |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 129 | return NULL; |
| 130 | } |
| 131 | |
| 132 | static int ti_pipe3_power_off(struct phy *x) |
| 133 | { |
| 134 | struct ti_pipe3 *phy = phy_get_drvdata(x); |
| 135 | int val; |
| 136 | int timeout = PLL_IDLE_TIME; |
| 137 | |
| 138 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); |
| 139 | val |= PLL_IDLE; |
| 140 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); |
| 141 | |
| 142 | do { |
| 143 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); |
| 144 | if (val & PLL_TICOPWDN) |
| 145 | break; |
| 146 | udelay(5); |
| 147 | } while (--timeout); |
| 148 | |
| 149 | if (!timeout) { |
| 150 | dev_err(phy->dev, "power off failed\n"); |
| 151 | return -EBUSY; |
| 152 | } |
| 153 | |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 154 | omap_control_phy_power(phy->control_dev, 0); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int ti_pipe3_power_on(struct phy *x) |
| 160 | { |
| 161 | struct ti_pipe3 *phy = phy_get_drvdata(x); |
| 162 | int val; |
| 163 | int timeout = PLL_IDLE_TIME; |
| 164 | |
| 165 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); |
| 166 | val &= ~PLL_IDLE; |
| 167 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); |
| 168 | |
| 169 | do { |
| 170 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); |
| 171 | if (!(val & PLL_TICOPWDN)) |
| 172 | break; |
| 173 | udelay(5); |
| 174 | } while (--timeout); |
| 175 | |
| 176 | if (!timeout) { |
| 177 | dev_err(phy->dev, "power on failed\n"); |
| 178 | return -EBUSY; |
| 179 | } |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static void ti_pipe3_dpll_relock(struct ti_pipe3 *phy) |
| 185 | { |
| 186 | u32 val; |
| 187 | unsigned long timeout; |
| 188 | |
| 189 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); |
| 190 | |
| 191 | timeout = jiffies + msecs_to_jiffies(20); |
| 192 | do { |
| 193 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); |
| 194 | if (val & PLL_LOCK) |
| 195 | break; |
| 196 | } while (!WARN_ON(time_after(jiffies, timeout))); |
| 197 | } |
| 198 | |
| 199 | static int ti_pipe3_dpll_lock(struct ti_pipe3 *phy) |
| 200 | { |
| 201 | u32 val; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 202 | struct pipe3_dpll_params *dpll_params; |
| 203 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 204 | dpll_params = ti_pipe3_get_dpll_params(phy); |
| 205 | if (!dpll_params) |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 206 | return -EINVAL; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 207 | |
| 208 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); |
| 209 | val &= ~PLL_REGN_MASK; |
| 210 | val |= dpll_params->n << PLL_REGN_SHIFT; |
| 211 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); |
| 212 | |
| 213 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); |
| 214 | val &= ~PLL_SELFREQDCO_MASK; |
| 215 | val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; |
| 216 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); |
| 217 | |
| 218 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); |
| 219 | val &= ~PLL_REGM_MASK; |
| 220 | val |= dpll_params->m << PLL_REGM_SHIFT; |
| 221 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); |
| 222 | |
| 223 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); |
| 224 | val &= ~PLL_REGM_F_MASK; |
| 225 | val |= dpll_params->mf << PLL_REGM_F_SHIFT; |
| 226 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); |
| 227 | |
| 228 | val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); |
| 229 | val &= ~PLL_SD_MASK; |
| 230 | val |= dpll_params->sd << PLL_SD_SHIFT; |
| 231 | ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); |
| 232 | |
| 233 | ti_pipe3_dpll_relock(phy); |
| 234 | |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | static int ti_pipe3_init(struct phy *x) |
| 239 | { |
| 240 | struct ti_pipe3 *phy = phy_get_drvdata(x); |
| 241 | int ret; |
| 242 | |
| 243 | ret = ti_pipe3_dpll_lock(phy); |
| 244 | if (ret) |
| 245 | return ret; |
| 246 | |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 247 | omap_control_phy_power(phy->control_dev, 1); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | static struct phy_ops ops = { |
| 253 | .init = ti_pipe3_init, |
| 254 | .power_on = ti_pipe3_power_on, |
| 255 | .power_off = ti_pipe3_power_off, |
| 256 | .owner = THIS_MODULE, |
| 257 | }; |
| 258 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 259 | #ifdef CONFIG_OF |
| 260 | static const struct of_device_id ti_pipe3_id_table[]; |
| 261 | #endif |
| 262 | |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 263 | static int ti_pipe3_probe(struct platform_device *pdev) |
| 264 | { |
| 265 | struct ti_pipe3 *phy; |
| 266 | struct phy *generic_phy; |
| 267 | struct phy_provider *phy_provider; |
| 268 | struct resource *res; |
| 269 | struct device_node *node = pdev->dev.of_node; |
| 270 | struct device_node *control_node; |
| 271 | struct platform_device *control_pdev; |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 272 | const struct of_device_id *match; |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 273 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 274 | match = of_match_device(of_match_ptr(ti_pipe3_id_table), &pdev->dev); |
| 275 | if (!match) |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 276 | return -EINVAL; |
| 277 | |
| 278 | phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); |
| 279 | if (!phy) { |
| 280 | dev_err(&pdev->dev, "unable to alloc mem for TI PIPE3 PHY\n"); |
| 281 | return -ENOMEM; |
| 282 | } |
| 283 | |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 284 | phy->dpll_map = (struct pipe3_dpll_map *)match->data; |
| 285 | if (!phy->dpll_map) { |
| 286 | dev_err(&pdev->dev, "no DPLL data\n"); |
| 287 | return -EINVAL; |
| 288 | } |
| 289 | |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 290 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl"); |
| 291 | phy->pll_ctrl_base = devm_ioremap_resource(&pdev->dev, res); |
| 292 | if (IS_ERR(phy->pll_ctrl_base)) |
| 293 | return PTR_ERR(phy->pll_ctrl_base); |
| 294 | |
| 295 | phy->dev = &pdev->dev; |
| 296 | |
Roger Quadros | 9c7f044 | 2014-03-06 16:38:42 +0200 | [diff] [blame^] | 297 | if (!of_device_is_compatible(node, "ti,phy-pipe3-sata")) { |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 298 | |
Roger Quadros | 9c7f044 | 2014-03-06 16:38:42 +0200 | [diff] [blame^] | 299 | phy->wkupclk = devm_clk_get(phy->dev, "wkupclk"); |
| 300 | if (IS_ERR(phy->wkupclk)) { |
| 301 | dev_err(&pdev->dev, "unable to get wkupclk\n"); |
| 302 | return PTR_ERR(phy->wkupclk); |
| 303 | } |
| 304 | |
| 305 | phy->refclk = devm_clk_get(phy->dev, "refclk"); |
| 306 | if (IS_ERR(phy->refclk)) { |
| 307 | dev_err(&pdev->dev, "unable to get refclk\n"); |
| 308 | return PTR_ERR(phy->refclk); |
| 309 | } |
| 310 | } else { |
| 311 | phy->wkupclk = ERR_PTR(-ENODEV); |
| 312 | phy->refclk = ERR_PTR(-ENODEV); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 313 | } |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 314 | |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 315 | phy->sys_clk = devm_clk_get(phy->dev, "sysclk"); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 316 | if (IS_ERR(phy->sys_clk)) { |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 317 | dev_err(&pdev->dev, "unable to get sysclk\n"); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 318 | return -EINVAL; |
| 319 | } |
| 320 | |
| 321 | control_node = of_parse_phandle(node, "ctrl-module", 0); |
| 322 | if (!control_node) { |
| 323 | dev_err(&pdev->dev, "Failed to get control device phandle\n"); |
| 324 | return -EINVAL; |
| 325 | } |
| 326 | |
| 327 | control_pdev = of_find_device_by_node(control_node); |
| 328 | if (!control_pdev) { |
| 329 | dev_err(&pdev->dev, "Failed to get control device\n"); |
| 330 | return -EINVAL; |
| 331 | } |
| 332 | |
| 333 | phy->control_dev = &control_pdev->dev; |
| 334 | |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 335 | omap_control_phy_power(phy->control_dev, 0); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 336 | |
| 337 | platform_set_drvdata(pdev, phy); |
| 338 | pm_runtime_enable(phy->dev); |
| 339 | |
| 340 | generic_phy = devm_phy_create(phy->dev, &ops, NULL); |
| 341 | if (IS_ERR(generic_phy)) |
| 342 | return PTR_ERR(generic_phy); |
| 343 | |
| 344 | phy_set_drvdata(generic_phy, phy); |
| 345 | phy_provider = devm_of_phy_provider_register(phy->dev, |
| 346 | of_phy_simple_xlate); |
| 347 | if (IS_ERR(phy_provider)) |
| 348 | return PTR_ERR(phy_provider); |
| 349 | |
| 350 | pm_runtime_get(&pdev->dev); |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static int ti_pipe3_remove(struct platform_device *pdev) |
| 356 | { |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 357 | if (!pm_runtime_suspended(&pdev->dev)) |
| 358 | pm_runtime_put(&pdev->dev); |
| 359 | pm_runtime_disable(&pdev->dev); |
| 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | #ifdef CONFIG_PM_RUNTIME |
| 365 | |
| 366 | static int ti_pipe3_runtime_suspend(struct device *dev) |
| 367 | { |
| 368 | struct ti_pipe3 *phy = dev_get_drvdata(dev); |
| 369 | |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 370 | if (!IS_ERR(phy->wkupclk)) |
| 371 | clk_disable_unprepare(phy->wkupclk); |
| 372 | if (!IS_ERR(phy->refclk)) |
| 373 | clk_disable_unprepare(phy->refclk); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 374 | |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | static int ti_pipe3_runtime_resume(struct device *dev) |
| 379 | { |
| 380 | u32 ret = 0; |
| 381 | struct ti_pipe3 *phy = dev_get_drvdata(dev); |
| 382 | |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 383 | if (!IS_ERR(phy->refclk)) { |
| 384 | ret = clk_prepare_enable(phy->refclk); |
| 385 | if (ret) { |
| 386 | dev_err(phy->dev, "Failed to enable refclk %d\n", ret); |
| 387 | goto err1; |
| 388 | } |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 389 | } |
| 390 | |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 391 | if (!IS_ERR(phy->wkupclk)) { |
| 392 | ret = clk_prepare_enable(phy->wkupclk); |
| 393 | if (ret) { |
| 394 | dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret); |
| 395 | goto err2; |
| 396 | } |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | return 0; |
| 400 | |
| 401 | err2: |
Roger Quadros | 1562864f | 2014-03-07 11:27:09 +0530 | [diff] [blame] | 402 | if (!IS_ERR(phy->refclk)) |
| 403 | clk_disable_unprepare(phy->refclk); |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 404 | |
| 405 | err1: |
| 406 | return ret; |
| 407 | } |
| 408 | |
| 409 | static const struct dev_pm_ops ti_pipe3_pm_ops = { |
| 410 | SET_RUNTIME_PM_OPS(ti_pipe3_runtime_suspend, |
| 411 | ti_pipe3_runtime_resume, NULL) |
| 412 | }; |
| 413 | |
| 414 | #define DEV_PM_OPS (&ti_pipe3_pm_ops) |
| 415 | #else |
| 416 | #define DEV_PM_OPS NULL |
| 417 | #endif |
| 418 | |
| 419 | #ifdef CONFIG_OF |
| 420 | static const struct of_device_id ti_pipe3_id_table[] = { |
Roger Quadros | 61f5467 | 2014-03-07 11:43:39 +0530 | [diff] [blame] | 421 | { |
| 422 | .compatible = "ti,phy-usb3", |
| 423 | .data = dpll_map_usb, |
| 424 | }, |
| 425 | { |
| 426 | .compatible = "ti,omap-usb3", |
| 427 | .data = dpll_map_usb, |
| 428 | }, |
| 429 | { |
| 430 | .compatible = "ti,phy-pipe3-sata", |
| 431 | .data = dpll_map_sata, |
| 432 | }, |
Kishon Vijay Abraham I | a70143b | 2014-03-03 17:08:12 +0530 | [diff] [blame] | 433 | {} |
| 434 | }; |
| 435 | MODULE_DEVICE_TABLE(of, ti_pipe3_id_table); |
| 436 | #endif |
| 437 | |
| 438 | static struct platform_driver ti_pipe3_driver = { |
| 439 | .probe = ti_pipe3_probe, |
| 440 | .remove = ti_pipe3_remove, |
| 441 | .driver = { |
| 442 | .name = "ti-pipe3", |
| 443 | .owner = THIS_MODULE, |
| 444 | .pm = DEV_PM_OPS, |
| 445 | .of_match_table = of_match_ptr(ti_pipe3_id_table), |
| 446 | }, |
| 447 | }; |
| 448 | |
| 449 | module_platform_driver(ti_pipe3_driver); |
| 450 | |
| 451 | MODULE_ALIAS("platform: ti_pipe3"); |
| 452 | MODULE_AUTHOR("Texas Instruments Inc."); |
| 453 | MODULE_DESCRIPTION("TI PIPE3 phy driver"); |
| 454 | MODULE_LICENSE("GPL v2"); |