Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Texas Instruments DSPS platforms "glue layer" |
| 3 | * |
| 4 | * Copyright (C) 2012, by Texas Instruments |
| 5 | * |
| 6 | * Based on the am35x "glue layer" code. |
| 7 | * |
| 8 | * This file is part of the Inventra Controller Driver for Linux. |
| 9 | * |
| 10 | * The Inventra Controller Driver for Linux is free software; you |
| 11 | * can redistribute it and/or modify it under the terms of the GNU |
| 12 | * General Public License version 2 as published by the Free Software |
| 13 | * Foundation. |
| 14 | * |
| 15 | * The Inventra Controller Driver for Linux is distributed in |
| 16 | * the hope that it will be useful, but WITHOUT ANY WARRANTY; |
| 17 | * without even the implied warranty of MERCHANTABILITY or |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 19 | * License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with The Inventra Controller Driver for Linux ; if not, |
| 23 | * write to the Free Software Foundation, Inc., 59 Temple Place, |
| 24 | * Suite 330, Boston, MA 02111-1307 USA |
| 25 | * |
| 26 | * musb_dsps.c will be a common file for all the TI DSPS platforms |
| 27 | * such as dm64x, dm36x, dm35x, da8x, am35x and ti81x. |
| 28 | * For now only ti81x is using this and in future davinci.c, am35x.c |
| 29 | * da8xx.c would be merged to this file after testing. |
| 30 | */ |
| 31 | |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/io.h> |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 34 | #include <linux/err.h> |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 35 | #include <linux/platform_device.h> |
| 36 | #include <linux/dma-mapping.h> |
| 37 | #include <linux/pm_runtime.h> |
| 38 | #include <linux/module.h> |
Felipe Balbi | 78c289f | 2012-07-19 13:32:15 +0300 | [diff] [blame] | 39 | #include <linux/usb/nop-usb-xceiv.h> |
Felipe Balbi | e8c4a7a | 2012-10-24 14:26:19 -0700 | [diff] [blame] | 40 | #include <linux/platform_data/usb-omap.h> |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 41 | |
| 42 | #include <linux/of.h> |
| 43 | #include <linux/of_device.h> |
| 44 | #include <linux/of_address.h> |
| 45 | |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 46 | #include "musb_core.h" |
| 47 | |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 48 | #ifdef CONFIG_OF |
| 49 | static const struct of_device_id musb_dsps_of_match[]; |
| 50 | #endif |
| 51 | |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 52 | /** |
| 53 | * avoid using musb_readx()/musb_writex() as glue layer should not be |
| 54 | * dependent on musb core layer symbols. |
| 55 | */ |
| 56 | static inline u8 dsps_readb(const void __iomem *addr, unsigned offset) |
| 57 | { return __raw_readb(addr + offset); } |
| 58 | |
| 59 | static inline u32 dsps_readl(const void __iomem *addr, unsigned offset) |
| 60 | { return __raw_readl(addr + offset); } |
| 61 | |
| 62 | static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data) |
| 63 | { __raw_writeb(data, addr + offset); } |
| 64 | |
| 65 | static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data) |
| 66 | { __raw_writel(data, addr + offset); } |
| 67 | |
| 68 | /** |
| 69 | * DSPS musb wrapper register offset. |
| 70 | * FIXME: This should be expanded to have all the wrapper registers from TI DSPS |
| 71 | * musb ips. |
| 72 | */ |
| 73 | struct dsps_musb_wrapper { |
| 74 | u16 revision; |
| 75 | u16 control; |
| 76 | u16 status; |
| 77 | u16 eoi; |
| 78 | u16 epintr_set; |
| 79 | u16 epintr_clear; |
| 80 | u16 epintr_status; |
| 81 | u16 coreintr_set; |
| 82 | u16 coreintr_clear; |
| 83 | u16 coreintr_status; |
| 84 | u16 phy_utmi; |
| 85 | u16 mode; |
| 86 | |
| 87 | /* bit positions for control */ |
| 88 | unsigned reset:5; |
| 89 | |
| 90 | /* bit positions for interrupt */ |
| 91 | unsigned usb_shift:5; |
| 92 | u32 usb_mask; |
| 93 | u32 usb_bitmap; |
| 94 | unsigned drvvbus:5; |
| 95 | |
| 96 | unsigned txep_shift:5; |
| 97 | u32 txep_mask; |
| 98 | u32 txep_bitmap; |
| 99 | |
| 100 | unsigned rxep_shift:5; |
| 101 | u32 rxep_mask; |
| 102 | u32 rxep_bitmap; |
| 103 | |
| 104 | /* bit positions for phy_utmi */ |
| 105 | unsigned otg_disable:5; |
| 106 | |
| 107 | /* bit positions for mode */ |
| 108 | unsigned iddig:5; |
| 109 | /* miscellaneous stuff */ |
| 110 | u32 musb_core_offset; |
| 111 | u8 poll_seconds; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 112 | /* number of musb instances */ |
| 113 | u8 instances; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 114 | }; |
| 115 | |
| 116 | /** |
| 117 | * DSPS glue structure. |
| 118 | */ |
| 119 | struct dsps_glue { |
| 120 | struct device *dev; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 121 | struct platform_device *musb[2]; /* child musb pdev */ |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 122 | const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 123 | struct timer_list timer[2]; /* otg_workaround timer */ |
| 124 | unsigned long last_timer[2]; /* last timer data for each instance */ |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 125 | u32 __iomem *usb_ctrl[2]; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 126 | }; |
| 127 | |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 128 | #define DSPS_AM33XX_CONTROL_MODULE_PHYS_0 0x44e10620 |
| 129 | #define DSPS_AM33XX_CONTROL_MODULE_PHYS_1 0x44e10628 |
| 130 | |
| 131 | static const resource_size_t dsps_control_module_phys[] = { |
| 132 | DSPS_AM33XX_CONTROL_MODULE_PHYS_0, |
| 133 | DSPS_AM33XX_CONTROL_MODULE_PHYS_1, |
| 134 | }; |
| 135 | |
Afzal Mohammed | deeeb9e | 2012-11-27 20:15:22 +0530 | [diff] [blame] | 136 | #define USBPHY_CM_PWRDN (1 << 0) |
| 137 | #define USBPHY_OTG_PWRDN (1 << 1) |
| 138 | #define USBPHY_OTGVDET_EN (1 << 19) |
| 139 | #define USBPHY_OTGSESSEND_EN (1 << 20) |
| 140 | |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 141 | /** |
| 142 | * musb_dsps_phy_control - phy on/off |
| 143 | * @glue: struct dsps_glue * |
| 144 | * @id: musb instance |
| 145 | * @on: flag for phy to be switched on or off |
| 146 | * |
| 147 | * This is to enable the PHY using usb_ctrl register in system control |
| 148 | * module space. |
| 149 | * |
| 150 | * XXX: This function will be removed once we have a seperate driver for |
| 151 | * control module |
| 152 | */ |
| 153 | static void musb_dsps_phy_control(struct dsps_glue *glue, u8 id, u8 on) |
| 154 | { |
| 155 | u32 usbphycfg; |
| 156 | |
| 157 | usbphycfg = readl(glue->usb_ctrl[id]); |
| 158 | |
| 159 | if (on) { |
| 160 | usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN); |
| 161 | usbphycfg |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN; |
| 162 | } else { |
| 163 | usbphycfg |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN; |
| 164 | } |
| 165 | |
| 166 | writel(usbphycfg, glue->usb_ctrl[id]); |
| 167 | } |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 168 | /** |
| 169 | * dsps_musb_enable - enable interrupts |
| 170 | */ |
| 171 | static void dsps_musb_enable(struct musb *musb) |
| 172 | { |
| 173 | struct device *dev = musb->controller; |
| 174 | struct platform_device *pdev = to_platform_device(dev->parent); |
| 175 | struct dsps_glue *glue = platform_get_drvdata(pdev); |
| 176 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 177 | void __iomem *reg_base = musb->ctrl_base; |
| 178 | u32 epmask, coremask; |
| 179 | |
| 180 | /* Workaround: setup IRQs through both register sets. */ |
| 181 | epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) | |
| 182 | ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift); |
| 183 | coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF); |
| 184 | |
| 185 | dsps_writel(reg_base, wrp->epintr_set, epmask); |
| 186 | dsps_writel(reg_base, wrp->coreintr_set, coremask); |
| 187 | /* Force the DRVVBUS IRQ so we can start polling for ID change. */ |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 188 | dsps_writel(reg_base, wrp->coreintr_set, |
| 189 | (1 << wrp->drvvbus) << wrp->usb_shift); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | /** |
| 193 | * dsps_musb_disable - disable HDRC and flush interrupts |
| 194 | */ |
| 195 | static void dsps_musb_disable(struct musb *musb) |
| 196 | { |
| 197 | struct device *dev = musb->controller; |
| 198 | struct platform_device *pdev = to_platform_device(dev->parent); |
| 199 | struct dsps_glue *glue = platform_get_drvdata(pdev); |
| 200 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 201 | void __iomem *reg_base = musb->ctrl_base; |
| 202 | |
| 203 | dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap); |
| 204 | dsps_writel(reg_base, wrp->epintr_clear, |
| 205 | wrp->txep_bitmap | wrp->rxep_bitmap); |
| 206 | dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); |
| 207 | dsps_writel(reg_base, wrp->eoi, 0); |
| 208 | } |
| 209 | |
| 210 | static void otg_timer(unsigned long _musb) |
| 211 | { |
| 212 | struct musb *musb = (void *)_musb; |
| 213 | void __iomem *mregs = musb->mregs; |
| 214 | struct device *dev = musb->controller; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 215 | struct platform_device *pdev = to_platform_device(dev); |
| 216 | struct dsps_glue *glue = dev_get_drvdata(dev->parent); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 217 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 218 | u8 devctl; |
| 219 | unsigned long flags; |
| 220 | |
| 221 | /* |
| 222 | * We poll because DSPS IP's won't expose several OTG-critical |
| 223 | * status change events (from the transceiver) otherwise. |
| 224 | */ |
| 225 | devctl = dsps_readb(mregs, MUSB_DEVCTL); |
| 226 | dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, |
| 227 | otg_state_string(musb->xceiv->state)); |
| 228 | |
| 229 | spin_lock_irqsave(&musb->lock, flags); |
| 230 | switch (musb->xceiv->state) { |
| 231 | case OTG_STATE_A_WAIT_BCON: |
| 232 | devctl &= ~MUSB_DEVCTL_SESSION; |
| 233 | dsps_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 234 | |
| 235 | devctl = dsps_readb(musb->mregs, MUSB_DEVCTL); |
| 236 | if (devctl & MUSB_DEVCTL_BDEVICE) { |
| 237 | musb->xceiv->state = OTG_STATE_B_IDLE; |
| 238 | MUSB_DEV_MODE(musb); |
| 239 | } else { |
| 240 | musb->xceiv->state = OTG_STATE_A_IDLE; |
| 241 | MUSB_HST_MODE(musb); |
| 242 | } |
| 243 | break; |
| 244 | case OTG_STATE_A_WAIT_VFALL: |
| 245 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; |
| 246 | dsps_writel(musb->ctrl_base, wrp->coreintr_set, |
| 247 | MUSB_INTR_VBUSERROR << wrp->usb_shift); |
| 248 | break; |
| 249 | case OTG_STATE_B_IDLE: |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 250 | devctl = dsps_readb(mregs, MUSB_DEVCTL); |
| 251 | if (devctl & MUSB_DEVCTL_BDEVICE) |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 252 | mod_timer(&glue->timer[pdev->id], |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 253 | jiffies + wrp->poll_seconds * HZ); |
| 254 | else |
| 255 | musb->xceiv->state = OTG_STATE_A_IDLE; |
| 256 | break; |
| 257 | default: |
| 258 | break; |
| 259 | } |
| 260 | spin_unlock_irqrestore(&musb->lock, flags); |
| 261 | } |
| 262 | |
| 263 | static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) |
| 264 | { |
| 265 | struct device *dev = musb->controller; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 266 | struct platform_device *pdev = to_platform_device(dev); |
| 267 | struct dsps_glue *glue = dev_get_drvdata(dev->parent); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 268 | |
| 269 | if (timeout == 0) |
| 270 | timeout = jiffies + msecs_to_jiffies(3); |
| 271 | |
| 272 | /* Never idle if active, or when VBUS timeout is not set as host */ |
| 273 | if (musb->is_active || (musb->a_wait_bcon == 0 && |
| 274 | musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { |
| 275 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
| 276 | otg_state_string(musb->xceiv->state)); |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 277 | del_timer(&glue->timer[pdev->id]); |
| 278 | glue->last_timer[pdev->id] = jiffies; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 279 | return; |
| 280 | } |
| 281 | |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 282 | if (time_after(glue->last_timer[pdev->id], timeout) && |
| 283 | timer_pending(&glue->timer[pdev->id])) { |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 284 | dev_dbg(musb->controller, |
| 285 | "Longer idle timer already pending, ignoring...\n"); |
| 286 | return; |
| 287 | } |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 288 | glue->last_timer[pdev->id] = timeout; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 289 | |
| 290 | dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", |
| 291 | otg_state_string(musb->xceiv->state), |
| 292 | jiffies_to_msecs(timeout - jiffies)); |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 293 | mod_timer(&glue->timer[pdev->id], timeout); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | static irqreturn_t dsps_interrupt(int irq, void *hci) |
| 297 | { |
| 298 | struct musb *musb = hci; |
| 299 | void __iomem *reg_base = musb->ctrl_base; |
| 300 | struct device *dev = musb->controller; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 301 | struct platform_device *pdev = to_platform_device(dev); |
| 302 | struct dsps_glue *glue = dev_get_drvdata(dev->parent); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 303 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 304 | unsigned long flags; |
| 305 | irqreturn_t ret = IRQ_NONE; |
| 306 | u32 epintr, usbintr; |
| 307 | |
| 308 | spin_lock_irqsave(&musb->lock, flags); |
| 309 | |
| 310 | /* Get endpoint interrupts */ |
| 311 | epintr = dsps_readl(reg_base, wrp->epintr_status); |
| 312 | musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift; |
| 313 | musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift; |
| 314 | |
| 315 | if (epintr) |
| 316 | dsps_writel(reg_base, wrp->epintr_status, epintr); |
| 317 | |
| 318 | /* Get usb core interrupts */ |
| 319 | usbintr = dsps_readl(reg_base, wrp->coreintr_status); |
| 320 | if (!usbintr && !epintr) |
| 321 | goto eoi; |
| 322 | |
| 323 | musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; |
| 324 | if (usbintr) |
| 325 | dsps_writel(reg_base, wrp->coreintr_status, usbintr); |
| 326 | |
| 327 | dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n", |
| 328 | usbintr, epintr); |
| 329 | /* |
| 330 | * DRVVBUS IRQs are the only proxy we have (a very poor one!) for |
| 331 | * DSPS IP's missing ID change IRQ. We need an ID change IRQ to |
| 332 | * switch appropriately between halves of the OTG state machine. |
| 333 | * Managing DEVCTL.SESSION per Mentor docs requires that we know its |
| 334 | * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set. |
| 335 | * Also, DRVVBUS pulses for SRP (but not at 5V) ... |
| 336 | */ |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 337 | if (usbintr & MUSB_INTR_BABBLE) |
Masanari Iida | 984e833 | 2012-11-01 00:03:51 +0900 | [diff] [blame] | 338 | pr_info("CAUTION: musb: Babble Interrupt Occurred\n"); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 339 | |
| 340 | if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) { |
| 341 | int drvvbus = dsps_readl(reg_base, wrp->status); |
| 342 | void __iomem *mregs = musb->mregs; |
| 343 | u8 devctl = dsps_readb(mregs, MUSB_DEVCTL); |
| 344 | int err; |
| 345 | |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 346 | err = musb->int_usb & MUSB_INTR_VBUSERROR; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 347 | if (err) { |
| 348 | /* |
| 349 | * The Mentor core doesn't debounce VBUS as needed |
| 350 | * to cope with device connect current spikes. This |
| 351 | * means it's not uncommon for bus-powered devices |
| 352 | * to get VBUS errors during enumeration. |
| 353 | * |
| 354 | * This is a workaround, but newer RTL from Mentor |
| 355 | * seems to allow a better one: "re"-starting sessions |
| 356 | * without waiting for VBUS to stop registering in |
| 357 | * devctl. |
| 358 | */ |
| 359 | musb->int_usb &= ~MUSB_INTR_VBUSERROR; |
| 360 | musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 361 | mod_timer(&glue->timer[pdev->id], |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 362 | jiffies + wrp->poll_seconds * HZ); |
| 363 | WARNING("VBUS error workaround (delay coming)\n"); |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 364 | } else if (drvvbus) { |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 365 | musb->is_active = 1; |
| 366 | MUSB_HST_MODE(musb); |
| 367 | musb->xceiv->otg->default_a = 1; |
| 368 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 369 | del_timer(&glue->timer[pdev->id]); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 370 | } else { |
| 371 | musb->is_active = 0; |
| 372 | MUSB_DEV_MODE(musb); |
| 373 | musb->xceiv->otg->default_a = 0; |
| 374 | musb->xceiv->state = OTG_STATE_B_IDLE; |
| 375 | } |
| 376 | |
| 377 | /* NOTE: this must complete power-on within 100 ms. */ |
| 378 | dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", |
| 379 | drvvbus ? "on" : "off", |
| 380 | otg_state_string(musb->xceiv->state), |
| 381 | err ? " ERROR" : "", |
| 382 | devctl); |
| 383 | ret = IRQ_HANDLED; |
| 384 | } |
| 385 | |
| 386 | if (musb->int_tx || musb->int_rx || musb->int_usb) |
| 387 | ret |= musb_interrupt(musb); |
| 388 | |
| 389 | eoi: |
| 390 | /* EOI needs to be written for the IRQ to be re-asserted. */ |
| 391 | if (ret == IRQ_HANDLED || epintr || usbintr) |
| 392 | dsps_writel(reg_base, wrp->eoi, 1); |
| 393 | |
| 394 | /* Poll for ID change */ |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 395 | if (musb->xceiv->state == OTG_STATE_B_IDLE) |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 396 | mod_timer(&glue->timer[pdev->id], |
| 397 | jiffies + wrp->poll_seconds * HZ); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 398 | |
| 399 | spin_unlock_irqrestore(&musb->lock, flags); |
| 400 | |
| 401 | return ret; |
| 402 | } |
| 403 | |
| 404 | static int dsps_musb_init(struct musb *musb) |
| 405 | { |
| 406 | struct device *dev = musb->controller; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 407 | struct platform_device *pdev = to_platform_device(dev); |
| 408 | struct dsps_glue *glue = dev_get_drvdata(dev->parent); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 409 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 410 | void __iomem *reg_base = musb->ctrl_base; |
| 411 | u32 rev, val; |
| 412 | int status; |
| 413 | |
| 414 | /* mentor core register starts at offset of 0x400 from musb base */ |
| 415 | musb->mregs += wrp->musb_core_offset; |
| 416 | |
Afzal Mohammed | d755422 | 2012-11-06 20:47:24 +0530 | [diff] [blame] | 417 | /* NOP driver needs change if supporting dual instance */ |
| 418 | usb_nop_xceiv_register(); |
Kishon Vijay Abraham I | 662dca5 | 2012-06-22 17:02:46 +0530 | [diff] [blame] | 419 | musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 420 | if (IS_ERR_OR_NULL(musb->xceiv)) |
Ming Lei | 25736e0 | 2013-01-04 23:13:58 +0800 | [diff] [blame] | 421 | return -EPROBE_DEFER; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 422 | |
| 423 | /* Returns zero if e.g. not clocked */ |
| 424 | rev = dsps_readl(reg_base, wrp->revision); |
| 425 | if (!rev) { |
| 426 | status = -ENODEV; |
| 427 | goto err0; |
| 428 | } |
| 429 | |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 430 | setup_timer(&glue->timer[pdev->id], otg_timer, (unsigned long) musb); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 431 | |
| 432 | /* Reset the musb */ |
| 433 | dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); |
| 434 | |
| 435 | /* Start the on-chip PHY and its PLL. */ |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 436 | musb_dsps_phy_control(glue, pdev->id, 1); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 437 | |
| 438 | musb->isr = dsps_interrupt; |
| 439 | |
| 440 | /* reset the otgdisable bit, needed for host mode to work */ |
| 441 | val = dsps_readl(reg_base, wrp->phy_utmi); |
| 442 | val &= ~(1 << wrp->otg_disable); |
| 443 | dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); |
| 444 | |
| 445 | /* clear level interrupt */ |
| 446 | dsps_writel(reg_base, wrp->eoi, 0); |
| 447 | |
| 448 | return 0; |
| 449 | err0: |
Kishon Vijay Abraham I | 721002e | 2012-06-22 17:02:45 +0530 | [diff] [blame] | 450 | usb_put_phy(musb->xceiv); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 451 | usb_nop_xceiv_unregister(); |
| 452 | return status; |
| 453 | } |
| 454 | |
| 455 | static int dsps_musb_exit(struct musb *musb) |
| 456 | { |
| 457 | struct device *dev = musb->controller; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 458 | struct platform_device *pdev = to_platform_device(dev); |
| 459 | struct dsps_glue *glue = dev_get_drvdata(dev->parent); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 460 | |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 461 | del_timer_sync(&glue->timer[pdev->id]); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 462 | |
| 463 | /* Shutdown the on-chip PHY and its PLL. */ |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 464 | musb_dsps_phy_control(glue, pdev->id, 0); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 465 | |
| 466 | /* NOP driver needs change if supporting dual instance */ |
Kishon Vijay Abraham I | 721002e | 2012-06-22 17:02:45 +0530 | [diff] [blame] | 467 | usb_put_phy(musb->xceiv); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 468 | usb_nop_xceiv_unregister(); |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | static struct musb_platform_ops dsps_ops = { |
| 474 | .init = dsps_musb_init, |
| 475 | .exit = dsps_musb_exit, |
| 476 | |
| 477 | .enable = dsps_musb_enable, |
| 478 | .disable = dsps_musb_disable, |
| 479 | |
| 480 | .try_idle = dsps_musb_try_idle, |
| 481 | }; |
| 482 | |
| 483 | static u64 musb_dmamask = DMA_BIT_MASK(32); |
| 484 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 485 | static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 486 | { |
| 487 | struct device *dev = glue->dev; |
| 488 | struct platform_device *pdev = to_platform_device(dev); |
| 489 | struct musb_hdrc_platform_data *pdata = dev->platform_data; |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 490 | struct device_node *np = pdev->dev.of_node; |
| 491 | struct musb_hdrc_config *config; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 492 | struct platform_device *musb; |
| 493 | struct resource *res; |
| 494 | struct resource resources[2]; |
Daniel Mack | ca749b2 | 2012-10-17 22:17:35 +0200 | [diff] [blame] | 495 | char res_name[11]; |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 496 | int ret; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 497 | |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 498 | resources[0].start = dsps_control_module_phys[id]; |
| 499 | resources[0].end = resources[0].start + SZ_4 - 1; |
| 500 | resources[0].flags = IORESOURCE_MEM; |
| 501 | |
Thierry Reding | 148e113 | 2013-01-21 11:09:22 +0100 | [diff] [blame] | 502 | glue->usb_ctrl[id] = devm_ioremap_resource(&pdev->dev, resources); |
| 503 | if (IS_ERR(glue->usb_ctrl[id])) { |
| 504 | ret = PTR_ERR(glue->usb_ctrl[id]); |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 505 | goto err0; |
| 506 | } |
| 507 | |
Afzal Mohammed | 3e594b1 | 2012-11-02 22:02:41 +0530 | [diff] [blame] | 508 | /* first resource is for usbss, so start index from 1 */ |
| 509 | res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 510 | if (!res) { |
Afzal Mohammed | 3e594b1 | 2012-11-02 22:02:41 +0530 | [diff] [blame] | 511 | dev_err(dev, "failed to get memory for instance %d\n", id); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 512 | ret = -ENODEV; |
| 513 | goto err0; |
| 514 | } |
| 515 | res->parent = NULL; |
| 516 | resources[0] = *res; |
| 517 | |
Afzal Mohammed | 3e594b1 | 2012-11-02 22:02:41 +0530 | [diff] [blame] | 518 | /* first resource is for usbss, so start index from 1 */ |
| 519 | res = platform_get_resource(pdev, IORESOURCE_IRQ, id + 1); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 520 | if (!res) { |
Afzal Mohammed | 3e594b1 | 2012-11-02 22:02:41 +0530 | [diff] [blame] | 521 | dev_err(dev, "failed to get irq for instance %d\n", id); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 522 | ret = -ENODEV; |
| 523 | goto err0; |
| 524 | } |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 525 | res->parent = NULL; |
| 526 | resources[1] = *res; |
Ajay Kumar Gupta | 3bb5534 | 2012-07-03 17:37:10 +0530 | [diff] [blame] | 527 | resources[1].name = "mc"; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 528 | |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 529 | /* allocate the child platform device */ |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 530 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 531 | if (!musb) { |
| 532 | dev_err(dev, "failed to allocate musb device\n"); |
| 533 | ret = -ENOMEM; |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 534 | goto err0; |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 535 | } |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 536 | |
| 537 | musb->dev.parent = dev; |
| 538 | musb->dev.dma_mask = &musb_dmamask; |
| 539 | musb->dev.coherent_dma_mask = musb_dmamask; |
| 540 | |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 541 | glue->musb[id] = musb; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 542 | |
| 543 | ret = platform_device_add_resources(musb, resources, 2); |
| 544 | if (ret) { |
| 545 | dev_err(dev, "failed to add resources\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 546 | goto err2; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 547 | } |
| 548 | |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 549 | if (np) { |
| 550 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 551 | if (!pdata) { |
| 552 | dev_err(&pdev->dev, |
| 553 | "failed to allocate musb platfrom data\n"); |
| 554 | ret = -ENOMEM; |
| 555 | goto err2; |
| 556 | } |
| 557 | |
| 558 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); |
| 559 | if (!config) { |
| 560 | dev_err(&pdev->dev, |
| 561 | "failed to allocate musb hdrc config\n"); |
| 562 | goto err2; |
| 563 | } |
| 564 | |
| 565 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); |
| 566 | of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); |
Daniel Mack | ca749b2 | 2012-10-17 22:17:35 +0200 | [diff] [blame] | 567 | snprintf(res_name, sizeof(res_name), "port%d-mode", id); |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 568 | of_property_read_u32(np, res_name, (u32 *)&pdata->mode); |
| 569 | of_property_read_u32(np, "power", (u32 *)&pdata->power); |
| 570 | config->multipoint = of_property_read_bool(np, "multipoint"); |
| 571 | |
| 572 | pdata->config = config; |
| 573 | } |
| 574 | |
| 575 | pdata->platform_ops = &dsps_ops; |
| 576 | |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 577 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); |
| 578 | if (ret) { |
| 579 | dev_err(dev, "failed to add platform_data\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 580 | goto err2; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | ret = platform_device_add(musb); |
| 584 | if (ret) { |
| 585 | dev_err(dev, "failed to register musb device\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 586 | goto err2; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | return 0; |
| 590 | |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 591 | err2: |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 592 | platform_device_put(musb); |
| 593 | err0: |
| 594 | return ret; |
| 595 | } |
| 596 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 597 | static int dsps_probe(struct platform_device *pdev) |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 598 | { |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 599 | struct device_node *np = pdev->dev.of_node; |
| 600 | const struct of_device_id *match; |
| 601 | const struct dsps_musb_wrapper *wrp; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 602 | struct dsps_glue *glue; |
| 603 | struct resource *iomem; |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 604 | int ret, i; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 605 | |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 606 | match = of_match_node(musb_dsps_of_match, np); |
| 607 | if (!match) { |
| 608 | dev_err(&pdev->dev, "fail to get matching of_match struct\n"); |
| 609 | ret = -EINVAL; |
| 610 | goto err0; |
| 611 | } |
| 612 | wrp = match->data; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 613 | |
| 614 | /* allocate glue */ |
| 615 | glue = kzalloc(sizeof(*glue), GFP_KERNEL); |
| 616 | if (!glue) { |
| 617 | dev_err(&pdev->dev, "unable to allocate glue memory\n"); |
| 618 | ret = -ENOMEM; |
| 619 | goto err0; |
| 620 | } |
| 621 | |
| 622 | /* get memory resource */ |
| 623 | iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 624 | if (!iomem) { |
| 625 | dev_err(&pdev->dev, "failed to get usbss mem resourse\n"); |
| 626 | ret = -ENODEV; |
| 627 | goto err1; |
| 628 | } |
| 629 | |
| 630 | glue->dev = &pdev->dev; |
| 631 | |
| 632 | glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL); |
| 633 | if (!glue->wrp) { |
| 634 | dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n"); |
| 635 | ret = -ENOMEM; |
| 636 | goto err1; |
| 637 | } |
| 638 | platform_set_drvdata(pdev, glue); |
| 639 | |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 640 | /* enable the usbss clocks */ |
| 641 | pm_runtime_enable(&pdev->dev); |
| 642 | |
| 643 | ret = pm_runtime_get_sync(&pdev->dev); |
| 644 | if (ret < 0) { |
| 645 | dev_err(&pdev->dev, "pm_runtime_get_sync FAILED"); |
Ajay Kumar Gupta | 0e38c4e | 2012-07-03 17:37:11 +0530 | [diff] [blame] | 646 | goto err2; |
| 647 | } |
| 648 | |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 649 | /* create the child platform device for all instances of musb */ |
| 650 | for (i = 0; i < wrp->instances ; i++) { |
| 651 | ret = dsps_create_musb_pdev(glue, i); |
| 652 | if (ret != 0) { |
| 653 | dev_err(&pdev->dev, "failed to create child pdev\n"); |
| 654 | /* release resources of previously created instances */ |
| 655 | for (i--; i >= 0 ; i--) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 656 | platform_device_unregister(glue->musb[i]); |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 657 | goto err3; |
| 658 | } |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | return 0; |
| 662 | |
| 663 | err3: |
Ajay Kumar Gupta | 0e38c4e | 2012-07-03 17:37:11 +0530 | [diff] [blame] | 664 | pm_runtime_put(&pdev->dev); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 665 | err2: |
Ajay Kumar Gupta | 0e38c4e | 2012-07-03 17:37:11 +0530 | [diff] [blame] | 666 | pm_runtime_disable(&pdev->dev); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 667 | kfree(glue->wrp); |
| 668 | err1: |
| 669 | kfree(glue); |
| 670 | err0: |
| 671 | return ret; |
| 672 | } |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 673 | static int dsps_remove(struct platform_device *pdev) |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 674 | { |
| 675 | struct dsps_glue *glue = platform_get_drvdata(pdev); |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 676 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 677 | int i; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 678 | |
| 679 | /* delete the child platform device */ |
B, Ravi | db4a932 | 2012-08-31 11:09:51 +0000 | [diff] [blame] | 680 | for (i = 0; i < wrp->instances ; i++) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 681 | platform_device_unregister(glue->musb[i]); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 682 | |
| 683 | /* disable usbss clocks */ |
| 684 | pm_runtime_put(&pdev->dev); |
| 685 | pm_runtime_disable(&pdev->dev); |
| 686 | kfree(glue->wrp); |
| 687 | kfree(glue); |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | #ifdef CONFIG_PM_SLEEP |
| 692 | static int dsps_suspend(struct device *dev) |
| 693 | { |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 694 | struct platform_device *pdev = to_platform_device(dev->parent); |
| 695 | struct dsps_glue *glue = platform_get_drvdata(pdev); |
| 696 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 697 | int i; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 698 | |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 699 | for (i = 0; i < wrp->instances; i++) |
| 700 | musb_dsps_phy_control(glue, i, 0); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 701 | |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | static int dsps_resume(struct device *dev) |
| 706 | { |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 707 | struct platform_device *pdev = to_platform_device(dev->parent); |
| 708 | struct dsps_glue *glue = platform_get_drvdata(pdev); |
| 709 | const struct dsps_musb_wrapper *wrp = glue->wrp; |
| 710 | int i; |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 711 | |
Santhapuri, Damodar | c68bb4c | 2012-11-02 22:02:53 +0530 | [diff] [blame] | 712 | for (i = 0; i < wrp->instances; i++) |
| 713 | musb_dsps_phy_control(glue, i, 1); |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 714 | |
| 715 | return 0; |
| 716 | } |
| 717 | #endif |
| 718 | |
| 719 | static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); |
| 720 | |
Bill Pemberton | 2f82686 | 2012-11-19 13:25:20 -0500 | [diff] [blame] | 721 | static const struct dsps_musb_wrapper ti81xx_driver_data = { |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 722 | .revision = 0x00, |
| 723 | .control = 0x14, |
| 724 | .status = 0x18, |
| 725 | .eoi = 0x24, |
| 726 | .epintr_set = 0x38, |
| 727 | .epintr_clear = 0x40, |
| 728 | .epintr_status = 0x30, |
| 729 | .coreintr_set = 0x3c, |
| 730 | .coreintr_clear = 0x44, |
| 731 | .coreintr_status = 0x34, |
| 732 | .phy_utmi = 0xe0, |
| 733 | .mode = 0xe8, |
| 734 | .reset = 0, |
| 735 | .otg_disable = 21, |
| 736 | .iddig = 8, |
| 737 | .usb_shift = 0, |
| 738 | .usb_mask = 0x1ff, |
| 739 | .usb_bitmap = (0x1ff << 0), |
| 740 | .drvvbus = 8, |
| 741 | .txep_shift = 0, |
| 742 | .txep_mask = 0xffff, |
| 743 | .txep_bitmap = (0xffff << 0), |
| 744 | .rxep_shift = 16, |
| 745 | .rxep_mask = 0xfffe, |
| 746 | .rxep_bitmap = (0xfffe << 16), |
| 747 | .musb_core_offset = 0x400, |
| 748 | .poll_seconds = 2, |
Afzal Mohammed | 3b46dd7 | 2012-11-02 22:02:35 +0530 | [diff] [blame] | 749 | .instances = 1, |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 750 | }; |
| 751 | |
Bill Pemberton | 2f82686 | 2012-11-19 13:25:20 -0500 | [diff] [blame] | 752 | static const struct platform_device_id musb_dsps_id_table[] = { |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 753 | { |
| 754 | .name = "musb-ti81xx", |
| 755 | .driver_data = (kernel_ulong_t) &ti81xx_driver_data, |
| 756 | }, |
| 757 | { }, /* Terminating Entry */ |
| 758 | }; |
| 759 | MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); |
| 760 | |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 761 | #ifdef CONFIG_OF |
Bill Pemberton | 2f82686 | 2012-11-19 13:25:20 -0500 | [diff] [blame] | 762 | static const struct of_device_id musb_dsps_of_match[] = { |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 763 | { .compatible = "ti,musb-am33xx", |
| 764 | .data = (void *) &ti81xx_driver_data, }, |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 765 | { }, |
| 766 | }; |
| 767 | MODULE_DEVICE_TABLE(of, musb_dsps_of_match); |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 768 | #endif |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 769 | |
| 770 | static struct platform_driver dsps_usbss_driver = { |
| 771 | .probe = dsps_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 772 | .remove = dsps_remove, |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 773 | .driver = { |
| 774 | .name = "musb-dsps", |
| 775 | .pm = &dsps_pm_ops, |
Ajay Kumar Gupta | 6514567 | 2012-08-31 11:09:53 +0000 | [diff] [blame] | 776 | .of_match_table = of_match_ptr(musb_dsps_of_match), |
Ajay Kumar Gupta | 9ecb887 | 2012-03-12 19:30:22 +0530 | [diff] [blame] | 777 | }, |
| 778 | .id_table = musb_dsps_id_table, |
| 779 | }; |
| 780 | |
| 781 | MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); |
| 782 | MODULE_AUTHOR("Ravi B <ravibabu@ti.com>"); |
| 783 | MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>"); |
| 784 | MODULE_LICENSE("GPL v2"); |
| 785 | |
| 786 | static int __init dsps_init(void) |
| 787 | { |
| 788 | return platform_driver_register(&dsps_usbss_driver); |
| 789 | } |
| 790 | subsys_initcall(dsps_init); |
| 791 | |
| 792 | static void __exit dsps_exit(void) |
| 793 | { |
| 794 | platform_driver_unregister(&dsps_usbss_driver); |
| 795 | } |
| 796 | module_exit(dsps_exit); |