Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005-2007 by Texas Instruments |
| 3 | * Some code has been taken from tusb6010.c |
| 4 | * Copyrights for that are attributable to: |
| 5 | * Copyright (C) 2006 Nokia Corporation |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 6 | * Tony Lindgren <tony@atomide.com> |
| 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 | */ |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/sched.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 30 | #include <linux/init.h> |
| 31 | #include <linux/list.h> |
| 32 | #include <linux/clk.h> |
| 33 | #include <linux/io.h> |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/dma-mapping.h> |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 36 | #include <linux/pm_runtime.h> |
| 37 | #include <linux/err.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 38 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 39 | #include "musb_core.h" |
| 40 | #include "omap2430.h" |
| 41 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 42 | struct omap2430_glue { |
| 43 | struct device *dev; |
| 44 | struct platform_device *musb; |
| 45 | }; |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 46 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 47 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 48 | static struct timer_list musb_idle_timer; |
| 49 | |
| 50 | static void musb_do_idle(unsigned long _musb) |
| 51 | { |
| 52 | struct musb *musb = (void *)_musb; |
| 53 | unsigned long flags; |
| 54 | u8 power; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 55 | u8 devctl; |
| 56 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 57 | spin_lock_irqsave(&musb->lock, flags); |
| 58 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 59 | switch (musb->xceiv->state) { |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 60 | case OTG_STATE_A_WAIT_BCON: |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 61 | |
| 62 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 63 | if (devctl & MUSB_DEVCTL_BDEVICE) { |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 64 | musb->xceiv->state = OTG_STATE_B_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 65 | MUSB_DEV_MODE(musb); |
| 66 | } else { |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 67 | musb->xceiv->state = OTG_STATE_A_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 68 | MUSB_HST_MODE(musb); |
| 69 | } |
| 70 | break; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 71 | case OTG_STATE_A_SUSPEND: |
| 72 | /* finish RESUME signaling? */ |
| 73 | if (musb->port1_status & MUSB_PORT_STAT_RESUME) { |
| 74 | power = musb_readb(musb->mregs, MUSB_POWER); |
| 75 | power &= ~MUSB_POWER_RESUME; |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 76 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 77 | musb_writeb(musb->mregs, MUSB_POWER, power); |
| 78 | musb->is_active = 1; |
| 79 | musb->port1_status &= ~(USB_PORT_STAT_SUSPEND |
| 80 | | MUSB_PORT_STAT_RESUME); |
| 81 | musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; |
| 82 | usb_hcd_poll_rh_status(musb_to_hcd(musb)); |
| 83 | /* NOTE: it might really be A_WAIT_BCON ... */ |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 84 | musb->xceiv->state = OTG_STATE_A_HOST; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 85 | } |
| 86 | break; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 87 | case OTG_STATE_A_HOST: |
| 88 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 89 | if (devctl & MUSB_DEVCTL_BDEVICE) |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 90 | musb->xceiv->state = OTG_STATE_B_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 91 | else |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 92 | musb->xceiv->state = OTG_STATE_A_WAIT_BCON; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 93 | default: |
| 94 | break; |
| 95 | } |
| 96 | spin_unlock_irqrestore(&musb->lock, flags); |
| 97 | } |
| 98 | |
| 99 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 100 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 101 | { |
| 102 | unsigned long default_timeout = jiffies + msecs_to_jiffies(3); |
| 103 | static unsigned long last_timer; |
| 104 | |
| 105 | if (timeout == 0) |
| 106 | timeout = default_timeout; |
| 107 | |
| 108 | /* Never idle if active, or when VBUS timeout is not set as host */ |
| 109 | if (musb->is_active || ((musb->a_wait_bcon == 0) |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 110 | && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 111 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
Anatolij Gustschin | 3df0045 | 2011-05-05 12:11:21 +0200 | [diff] [blame] | 112 | otg_state_string(musb->xceiv->state)); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 113 | del_timer(&musb_idle_timer); |
| 114 | last_timer = jiffies; |
| 115 | return; |
| 116 | } |
| 117 | |
| 118 | if (time_after(last_timer, timeout)) { |
| 119 | if (!timer_pending(&musb_idle_timer)) |
| 120 | last_timer = timeout; |
| 121 | else { |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 122 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 123 | return; |
| 124 | } |
| 125 | } |
| 126 | last_timer = timeout; |
| 127 | |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 128 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", |
Anatolij Gustschin | 3df0045 | 2011-05-05 12:11:21 +0200 | [diff] [blame] | 129 | otg_state_string(musb->xceiv->state), |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 130 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); |
| 131 | mod_timer(&musb_idle_timer, timeout); |
| 132 | } |
| 133 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 134 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 135 | { |
| 136 | u8 devctl; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 137 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
| 138 | int ret = 1; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 139 | /* HDRC controls CPEN, but beware current surges during device |
| 140 | * connect. They can trigger transient overcurrent conditions |
| 141 | * that must be ignored. |
| 142 | */ |
| 143 | |
| 144 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 145 | |
| 146 | if (is_on) { |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 147 | if (musb->xceiv->state == OTG_STATE_A_IDLE) { |
| 148 | /* start the session */ |
| 149 | devctl |= MUSB_DEVCTL_SESSION; |
| 150 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 151 | /* |
| 152 | * Wait for the musb to set as A device to enable the |
| 153 | * VBUS |
| 154 | */ |
| 155 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 156 | |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 157 | cpu_relax(); |
| 158 | |
| 159 | if (time_after(jiffies, timeout)) { |
| 160 | dev_err(musb->controller, |
| 161 | "configured as A device timeout"); |
| 162 | ret = -EINVAL; |
| 163 | break; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | if (ret && musb->xceiv->set_vbus) |
| 168 | otg_set_vbus(musb->xceiv, 1); |
| 169 | } else { |
| 170 | musb->is_active = 1; |
| 171 | musb->xceiv->default_a = 1; |
| 172 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; |
| 173 | devctl |= MUSB_DEVCTL_SESSION; |
| 174 | MUSB_HST_MODE(musb); |
| 175 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 176 | } else { |
| 177 | musb->is_active = 0; |
| 178 | |
| 179 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and |
| 180 | * jumping right to B_IDLE... |
| 181 | */ |
| 182 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 183 | musb->xceiv->default_a = 0; |
| 184 | musb->xceiv->state = OTG_STATE_B_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 185 | devctl &= ~MUSB_DEVCTL_SESSION; |
| 186 | |
| 187 | MUSB_DEV_MODE(musb); |
| 188 | } |
| 189 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 190 | |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 191 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 192 | /* otg %3x conf %08x prcm %08x */ "\n", |
Anatolij Gustschin | 3df0045 | 2011-05-05 12:11:21 +0200 | [diff] [blame] | 193 | otg_state_string(musb->xceiv->state), |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 194 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
| 195 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 196 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 197 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 198 | { |
| 199 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 200 | |
| 201 | devctl |= MUSB_DEVCTL_SESSION; |
| 202 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 203 | |
David Brownell | 96a274d | 2008-11-24 13:06:47 +0200 | [diff] [blame] | 204 | return 0; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 205 | } |
| 206 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 207 | static inline void omap2430_low_level_exit(struct musb *musb) |
| 208 | { |
| 209 | u32 l; |
| 210 | |
| 211 | /* in any role */ |
| 212 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 213 | l |= ENABLEFORCE; /* enable MSTANDBY */ |
| 214 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | static inline void omap2430_low_level_init(struct musb *musb) |
| 218 | { |
| 219 | u32 l; |
| 220 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 221 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 222 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ |
| 223 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
| 224 | } |
| 225 | |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 226 | /* blocking notifier support */ |
| 227 | static int musb_otg_notifications(struct notifier_block *nb, |
| 228 | unsigned long event, void *unused) |
| 229 | { |
| 230 | struct musb *musb = container_of(nb, struct musb, nb); |
| 231 | struct device *dev = musb->controller; |
| 232 | struct musb_hdrc_platform_data *pdata = dev->platform_data; |
| 233 | struct omap_musb_board_data *data = pdata->board_data; |
| 234 | |
| 235 | switch (event) { |
| 236 | case USB_EVENT_ID: |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 237 | dev_dbg(musb->controller, "ID GND\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 238 | |
| 239 | if (is_otg_enabled(musb)) { |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 240 | if (musb->gadget_driver) { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 241 | pm_runtime_get_sync(musb->controller); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 242 | otg_init(musb->xceiv); |
Hema HK | 70045c5 | 2011-02-28 15:05:29 +0530 | [diff] [blame] | 243 | omap2430_musb_set_vbus(musb, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 244 | } |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 245 | } else { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 246 | pm_runtime_get_sync(musb->controller); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 247 | otg_init(musb->xceiv); |
Hema HK | 70045c5 | 2011-02-28 15:05:29 +0530 | [diff] [blame] | 248 | omap2430_musb_set_vbus(musb, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 249 | } |
| 250 | break; |
| 251 | |
| 252 | case USB_EVENT_VBUS: |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 253 | dev_dbg(musb->controller, "VBUS Connect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 254 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 255 | if (musb->gadget_driver) |
| 256 | pm_runtime_get_sync(musb->controller); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 257 | otg_init(musb->xceiv); |
| 258 | break; |
| 259 | |
| 260 | case USB_EVENT_NONE: |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 261 | dev_dbg(musb->controller, "VBUS Disconnect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 262 | |
Jarkko Nikula | 383cf4e | 2011-04-27 17:02:37 +0300 | [diff] [blame] | 263 | if (is_otg_enabled(musb) || is_peripheral_enabled(musb)) |
Felipe Balbi | 6228596 | 2011-06-22 17:28:09 +0300 | [diff] [blame] | 264 | if (musb->gadget_driver) { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 265 | pm_runtime_mark_last_busy(musb->controller); |
| 266 | pm_runtime_put_autosuspend(musb->controller); |
| 267 | } |
| 268 | |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 269 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
| 270 | if (musb->xceiv->set_vbus) |
| 271 | otg_set_vbus(musb->xceiv, 0); |
| 272 | } |
| 273 | otg_shutdown(musb->xceiv); |
| 274 | break; |
| 275 | default: |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 276 | dev_dbg(musb->controller, "ID float\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 277 | return NOTIFY_DONE; |
| 278 | } |
| 279 | |
| 280 | return NOTIFY_OK; |
| 281 | } |
| 282 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 283 | static int omap2430_musb_init(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 284 | { |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 285 | u32 l, status = 0; |
Hema Kalliguddi | ea65df5 | 2010-09-22 19:27:40 -0500 | [diff] [blame] | 286 | struct device *dev = musb->controller; |
| 287 | struct musb_hdrc_platform_data *plat = dev->platform_data; |
| 288 | struct omap_musb_board_data *data = plat->board_data; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 289 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 290 | /* We require some kind of external transceiver, hooked |
| 291 | * up through ULPI. TWL4030-family PMICs include one, |
| 292 | * which needs a driver, drivers aren't always needed. |
| 293 | */ |
| 294 | musb->xceiv = otg_get_transceiver(); |
| 295 | if (!musb->xceiv) { |
| 296 | pr_err("HS USB OTG: no transceiver configured\n"); |
| 297 | return -ENODEV; |
| 298 | } |
| 299 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 300 | status = pm_runtime_get_sync(dev); |
| 301 | if (status < 0) { |
| 302 | dev_err(dev, "pm_runtime_get_sync FAILED"); |
| 303 | goto err1; |
| 304 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 305 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 306 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
Maulik Mankad | de2e1b0 | 2010-03-12 10:29:07 +0200 | [diff] [blame] | 307 | |
| 308 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
| 309 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ |
| 310 | l &= ~ULPI_12PIN; /* Disable ULPI */ |
| 311 | l |= UTMI_8BIT; /* Enable UTMI */ |
| 312 | } else { |
| 313 | l |= ULPI_12PIN; |
| 314 | } |
| 315 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 316 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 317 | |
| 318 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " |
| 319 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 320 | musb_readl(musb->mregs, OTG_REVISION), |
| 321 | musb_readl(musb->mregs, OTG_SYSCONFIG), |
| 322 | musb_readl(musb->mregs, OTG_SYSSTATUS), |
| 323 | musb_readl(musb->mregs, OTG_INTERFSEL), |
| 324 | musb_readl(musb->mregs, OTG_SIMENABLE)); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 325 | |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 326 | musb->nb.notifier_call = musb_otg_notifications; |
| 327 | status = otg_register_notifier(musb->xceiv, &musb->nb); |
| 328 | |
| 329 | if (status) |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 330 | dev_dbg(musb->controller, "notification register failed\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 331 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 332 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); |
| 333 | |
| 334 | return 0; |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 335 | |
| 336 | err1: |
| 337 | pm_runtime_disable(dev); |
| 338 | return status; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 339 | } |
| 340 | |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 341 | static void omap2430_musb_enable(struct musb *musb) |
| 342 | { |
| 343 | u8 devctl; |
| 344 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
| 345 | struct device *dev = musb->controller; |
| 346 | struct musb_hdrc_platform_data *pdata = dev->platform_data; |
| 347 | struct omap_musb_board_data *data = pdata->board_data; |
| 348 | |
| 349 | switch (musb->xceiv->last_event) { |
| 350 | |
| 351 | case USB_EVENT_ID: |
| 352 | otg_init(musb->xceiv); |
| 353 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
| 354 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 355 | /* start the session */ |
| 356 | devctl |= MUSB_DEVCTL_SESSION; |
| 357 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 358 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
| 359 | MUSB_DEVCTL_BDEVICE) { |
| 360 | cpu_relax(); |
| 361 | |
| 362 | if (time_after(jiffies, timeout)) { |
| 363 | dev_err(musb->controller, |
| 364 | "configured as A device timeout"); |
| 365 | break; |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | break; |
| 370 | |
| 371 | case USB_EVENT_VBUS: |
| 372 | otg_init(musb->xceiv); |
| 373 | break; |
| 374 | |
| 375 | default: |
| 376 | break; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | static void omap2430_musb_disable(struct musb *musb) |
| 381 | { |
| 382 | if (musb->xceiv->last_event) |
| 383 | otg_shutdown(musb->xceiv); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 384 | } |
| 385 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 386 | static int omap2430_musb_exit(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 387 | { |
Johan Hovold | 19b9a83 | 2011-02-11 16:57:08 +0100 | [diff] [blame] | 388 | del_timer_sync(&musb_idle_timer); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 389 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 390 | omap2430_low_level_exit(musb); |
Sergei Shtylyov | f405387 | 2010-09-29 09:54:29 +0300 | [diff] [blame] | 391 | otg_put_transceiver(musb->xceiv); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 392 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 393 | return 0; |
| 394 | } |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 395 | |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 396 | static const struct musb_platform_ops omap2430_ops = { |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 397 | .init = omap2430_musb_init, |
| 398 | .exit = omap2430_musb_exit, |
| 399 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 400 | .set_mode = omap2430_musb_set_mode, |
| 401 | .try_idle = omap2430_musb_try_idle, |
| 402 | |
| 403 | .set_vbus = omap2430_musb_set_vbus, |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 404 | |
| 405 | .enable = omap2430_musb_enable, |
| 406 | .disable = omap2430_musb_disable, |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 407 | }; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 408 | |
| 409 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); |
| 410 | |
| 411 | static int __init omap2430_probe(struct platform_device *pdev) |
| 412 | { |
| 413 | struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; |
| 414 | struct platform_device *musb; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 415 | struct omap2430_glue *glue; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 416 | int ret = -ENOMEM; |
| 417 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 418 | glue = kzalloc(sizeof(*glue), GFP_KERNEL); |
| 419 | if (!glue) { |
| 420 | dev_err(&pdev->dev, "failed to allocate glue context\n"); |
| 421 | goto err0; |
| 422 | } |
| 423 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 424 | musb = platform_device_alloc("musb-hdrc", -1); |
| 425 | if (!musb) { |
| 426 | dev_err(&pdev->dev, "failed to allocate musb device\n"); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 427 | goto err1; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | musb->dev.parent = &pdev->dev; |
| 431 | musb->dev.dma_mask = &omap2430_dmamask; |
| 432 | musb->dev.coherent_dma_mask = omap2430_dmamask; |
| 433 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 434 | glue->dev = &pdev->dev; |
| 435 | glue->musb = musb; |
| 436 | |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 437 | pdata->platform_ops = &omap2430_ops; |
| 438 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 439 | platform_set_drvdata(pdev, glue); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 440 | |
| 441 | ret = platform_device_add_resources(musb, pdev->resource, |
| 442 | pdev->num_resources); |
| 443 | if (ret) { |
| 444 | dev_err(&pdev->dev, "failed to add resources\n"); |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 445 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); |
| 449 | if (ret) { |
| 450 | dev_err(&pdev->dev, "failed to add platform_data\n"); |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 451 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | ret = platform_device_add(musb); |
| 455 | if (ret) { |
| 456 | dev_err(&pdev->dev, "failed to register musb device\n"); |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 457 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 458 | } |
| 459 | |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 460 | pm_runtime_enable(&pdev->dev); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 461 | |
| 462 | return 0; |
| 463 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 464 | err2: |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 465 | platform_device_put(musb); |
| 466 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 467 | err1: |
| 468 | kfree(glue); |
| 469 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 470 | err0: |
| 471 | return ret; |
| 472 | } |
| 473 | |
| 474 | static int __exit omap2430_remove(struct platform_device *pdev) |
| 475 | { |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 476 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 477 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 478 | platform_device_del(glue->musb); |
| 479 | platform_device_put(glue->musb); |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 480 | pm_runtime_put(&pdev->dev); |
| 481 | pm_runtime_disable(&pdev->dev); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 482 | kfree(glue); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 483 | |
| 484 | return 0; |
| 485 | } |
| 486 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 487 | #ifdef CONFIG_PM |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 488 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 489 | static int omap2430_runtime_suspend(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 490 | { |
| 491 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 492 | struct musb *musb = glue_to_musb(glue); |
| 493 | |
| 494 | omap2430_low_level_exit(musb); |
| 495 | otg_set_suspend(musb->xceiv, 1); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 496 | |
| 497 | return 0; |
| 498 | } |
| 499 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 500 | static int omap2430_runtime_resume(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 501 | { |
| 502 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 503 | struct musb *musb = glue_to_musb(glue); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 504 | |
| 505 | omap2430_low_level_init(musb); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 506 | otg_set_suspend(musb->xceiv, 0); |
| 507 | |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static struct dev_pm_ops omap2430_pm_ops = { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 512 | .runtime_suspend = omap2430_runtime_suspend, |
| 513 | .runtime_resume = omap2430_runtime_resume, |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 514 | }; |
| 515 | |
| 516 | #define DEV_PM_OPS (&omap2430_pm_ops) |
| 517 | #else |
| 518 | #define DEV_PM_OPS NULL |
| 519 | #endif |
| 520 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 521 | static struct platform_driver omap2430_driver = { |
| 522 | .remove = __exit_p(omap2430_remove), |
| 523 | .driver = { |
| 524 | .name = "musb-omap2430", |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 525 | .pm = DEV_PM_OPS, |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 526 | }, |
| 527 | }; |
| 528 | |
| 529 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); |
| 530 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| 531 | MODULE_LICENSE("GPL v2"); |
| 532 | |
| 533 | static int __init omap2430_init(void) |
| 534 | { |
| 535 | return platform_driver_probe(&omap2430_driver, omap2430_probe); |
| 536 | } |
| 537 | subsys_initcall(omap2430_init); |
| 538 | |
| 539 | static void __exit omap2430_exit(void) |
| 540 | { |
| 541 | platform_driver_unregister(&omap2430_driver); |
| 542 | } |
| 543 | module_exit(omap2430_exit); |