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> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 32 | #include <linux/io.h> |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 33 | #include <linux/of.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> |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 38 | #include <linux/delay.h> |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 39 | #include <linux/usb/musb.h> |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 40 | #include <linux/phy/omap_control_phy.h> |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 41 | #include <linux/of_platform.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 42 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 43 | #include "musb_core.h" |
| 44 | #include "omap2430.h" |
| 45 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 46 | struct omap2430_glue { |
| 47 | struct device *dev; |
| 48 | struct platform_device *musb; |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 49 | enum musb_vbus_id_status status; |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 50 | struct work_struct omap_musb_mailbox_work; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 51 | struct device *control_otghs; |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 52 | bool cable_connected; |
| 53 | bool enabled; |
| 54 | bool powered; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 55 | }; |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 56 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 57 | |
Aaro Koskinen | 4b58ed1 | 2013-03-05 13:04:24 +0200 | [diff] [blame] | 58 | static struct omap2430_glue *_glue; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 59 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 60 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 61 | { |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 62 | struct usb_otg *otg = musb->xceiv->otg; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 63 | u8 devctl; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 64 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 65 | /* HDRC controls CPEN, but beware current surges during device |
| 66 | * connect. They can trigger transient overcurrent conditions |
| 67 | * that must be ignored. |
| 68 | */ |
| 69 | |
| 70 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 71 | |
| 72 | if (is_on) { |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 73 | if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 74 | int loops = 100; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 75 | /* start the session */ |
| 76 | devctl |= MUSB_DEVCTL_SESSION; |
| 77 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 78 | /* |
| 79 | * Wait for the musb to set as A device to enable the |
| 80 | * VBUS |
| 81 | */ |
Sergei Shtylyov | 5a80530 | 2014-10-24 00:34:12 +0400 | [diff] [blame] | 82 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
| 83 | MUSB_DEVCTL_BDEVICE) { |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 84 | |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 85 | mdelay(5); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 86 | cpu_relax(); |
| 87 | |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 88 | if (time_after(jiffies, timeout) |
| 89 | || loops-- <= 0) { |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 90 | dev_err(musb->controller, |
| 91 | "configured as A device timeout"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 92 | break; |
| 93 | } |
| 94 | } |
| 95 | |
Kishon Vijay Abraham I | bb467cf | 2013-03-14 11:53:56 +0530 | [diff] [blame] | 96 | otg_set_vbus(otg, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 97 | } else { |
| 98 | musb->is_active = 1; |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 99 | otg->default_a = 1; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 100 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 101 | devctl |= MUSB_DEVCTL_SESSION; |
| 102 | MUSB_HST_MODE(musb); |
| 103 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 104 | } else { |
| 105 | musb->is_active = 0; |
| 106 | |
| 107 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and |
| 108 | * jumping right to B_IDLE... |
| 109 | */ |
| 110 | |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 111 | otg->default_a = 0; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 112 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 113 | devctl &= ~MUSB_DEVCTL_SESSION; |
| 114 | |
| 115 | MUSB_DEV_MODE(musb); |
| 116 | } |
| 117 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 118 | |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 119 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 120 | /* otg %3x conf %08x prcm %08x */ "\n", |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 121 | usb_otg_state_string(musb->xceiv->otg->state), |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 122 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
| 123 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 124 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 125 | static inline void omap2430_low_level_exit(struct musb *musb) |
| 126 | { |
| 127 | u32 l; |
| 128 | |
| 129 | /* in any role */ |
| 130 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 131 | l |= ENABLEFORCE; /* enable MSTANDBY */ |
| 132 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | static inline void omap2430_low_level_init(struct musb *musb) |
| 136 | { |
| 137 | u32 l; |
| 138 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 139 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 140 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ |
| 141 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
| 142 | } |
| 143 | |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 144 | /* |
| 145 | * We can get multiple cable events so we need to keep track |
| 146 | * of the power state. Only keep power enabled if USB cable is |
| 147 | * connected and a gadget is started. |
| 148 | */ |
| 149 | static void omap2430_set_power(struct musb *musb, bool enabled, bool cable) |
| 150 | { |
| 151 | struct device *dev = musb->controller; |
| 152 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
| 153 | bool power_up; |
| 154 | int res; |
| 155 | |
| 156 | if (glue->enabled != enabled) |
| 157 | glue->enabled = enabled; |
| 158 | |
| 159 | if (glue->cable_connected != cable) |
| 160 | glue->cable_connected = cable; |
| 161 | |
| 162 | power_up = glue->enabled && glue->cable_connected; |
| 163 | if (power_up == glue->powered) { |
| 164 | dev_warn(musb->controller, "power state already %i\n", |
| 165 | power_up); |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | glue->powered = power_up; |
| 170 | |
| 171 | if (power_up) { |
| 172 | res = pm_runtime_get_sync(musb->controller); |
| 173 | if (res < 0) { |
| 174 | dev_err(musb->controller, "could not enable: %i", res); |
| 175 | glue->powered = false; |
| 176 | } |
| 177 | } else { |
| 178 | pm_runtime_mark_last_busy(musb->controller); |
| 179 | pm_runtime_put_autosuspend(musb->controller); |
| 180 | } |
| 181 | } |
| 182 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 183 | static void omap2430_musb_mailbox(enum musb_vbus_id_status status) |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 184 | { |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 185 | struct omap2430_glue *glue = _glue; |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 186 | |
Aaro Koskinen | f8c4b0e | 2013-03-05 13:04:23 +0200 | [diff] [blame] | 187 | if (!glue) { |
| 188 | pr_err("%s: musb core is not yet initialized\n", __func__); |
| 189 | return; |
| 190 | } |
| 191 | glue->status = status; |
| 192 | |
| 193 | if (!glue_to_musb(glue)) { |
Aaro Koskinen | 80ab72e | 2012-12-23 01:24:51 +0200 | [diff] [blame] | 194 | pr_err("%s: musb core is not yet ready\n", __func__); |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 195 | return; |
| 196 | } |
| 197 | |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 198 | schedule_work(&glue->omap_musb_mailbox_work); |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 199 | } |
| 200 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 201 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 202 | { |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 203 | struct musb *musb = glue_to_musb(glue); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 204 | struct device *dev = musb->controller; |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 205 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 206 | struct omap_musb_board_data *data = pdata->board_data; |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 207 | struct usb_otg *otg = musb->xceiv->otg; |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 208 | bool cable_connected; |
| 209 | |
| 210 | cable_connected = ((glue->status == MUSB_ID_GROUND) || |
| 211 | (glue->status == MUSB_VBUS_VALID)); |
| 212 | |
| 213 | if (cable_connected) |
| 214 | omap2430_set_power(musb, glue->enabled, cable_connected); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 215 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 216 | switch (glue->status) { |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 217 | case MUSB_ID_GROUND: |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 218 | dev_dbg(dev, "ID GND\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 219 | |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 220 | otg->default_a = true; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 221 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 222 | musb->xceiv->last_event = USB_EVENT_ID; |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 223 | if (musb->gadget_driver) { |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 224 | omap_control_usb_set_mode(glue->control_otghs, |
| 225 | USB_MODE_HOST); |
Hema HK | 70045c5 | 2011-02-28 15:05:29 +0530 | [diff] [blame] | 226 | omap2430_musb_set_vbus(musb, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 227 | } |
| 228 | break; |
| 229 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 230 | case MUSB_VBUS_VALID: |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 231 | dev_dbg(dev, "VBUS Connect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 232 | |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 233 | otg->default_a = false; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 234 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 235 | musb->xceiv->last_event = USB_EVENT_VBUS; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 236 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 237 | break; |
| 238 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 239 | case MUSB_ID_FLOAT: |
| 240 | case MUSB_VBUS_OFF: |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 241 | dev_dbg(dev, "VBUS Disconnect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 242 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 243 | musb->xceiv->last_event = USB_EVENT_NONE; |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 244 | if (musb->gadget_driver) |
Grazvydas Ignotas | 2c1fe89 | 2013-03-24 17:36:54 +0200 | [diff] [blame] | 245 | omap2430_musb_set_vbus(musb, 0); |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 246 | |
Kishon Vijay Abraham I | bb467cf | 2013-03-14 11:53:56 +0530 | [diff] [blame] | 247 | if (data->interface_type == MUSB_INTERFACE_UTMI) |
| 248 | otg_set_vbus(musb->xceiv->otg, 0); |
| 249 | |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 250 | omap_control_usb_set_mode(glue->control_otghs, |
| 251 | USB_MODE_DISCONNECT); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 252 | break; |
| 253 | default: |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 254 | dev_dbg(dev, "ID float\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 255 | } |
Pali Rohár | 6fa7178 | 2013-09-18 19:03:34 +0200 | [diff] [blame] | 256 | |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 257 | if (!cable_connected) |
| 258 | omap2430_set_power(musb, glue->enabled, cable_connected); |
| 259 | |
Pali Rohár | 6fa7178 | 2013-09-18 19:03:34 +0200 | [diff] [blame] | 260 | atomic_notifier_call_chain(&musb->xceiv->notifier, |
| 261 | musb->xceiv->last_event, NULL); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 262 | } |
| 263 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 264 | |
| 265 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) |
| 266 | { |
| 267 | struct omap2430_glue *glue = container_of(mailbox_work, |
| 268 | struct omap2430_glue, omap_musb_mailbox_work); |
Felipe Balbi | 8b2bc2c | 2014-04-07 10:58:01 -0500 | [diff] [blame] | 269 | struct musb *musb = glue_to_musb(glue); |
| 270 | struct device *dev = musb->controller; |
| 271 | |
| 272 | pm_runtime_get_sync(dev); |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 273 | omap_musb_set_mailbox(glue); |
Felipe Balbi | 8b2bc2c | 2014-04-07 10:58:01 -0500 | [diff] [blame] | 274 | pm_runtime_mark_last_busy(dev); |
| 275 | pm_runtime_put_autosuspend(dev); |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 276 | } |
| 277 | |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 278 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
| 279 | { |
| 280 | unsigned long flags; |
| 281 | irqreturn_t retval = IRQ_NONE; |
| 282 | struct musb *musb = __hci; |
| 283 | |
| 284 | spin_lock_irqsave(&musb->lock, flags); |
| 285 | |
| 286 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); |
| 287 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); |
| 288 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); |
| 289 | |
| 290 | if (musb->int_usb || musb->int_tx || musb->int_rx) |
| 291 | retval = musb_interrupt(musb); |
| 292 | |
| 293 | spin_unlock_irqrestore(&musb->lock, flags); |
| 294 | |
| 295 | return retval; |
| 296 | } |
| 297 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 298 | static int omap2430_musb_init(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 299 | { |
Shubhrajyoti D | ad57969 | 2012-03-22 12:48:06 +0530 | [diff] [blame] | 300 | u32 l; |
| 301 | int status = 0; |
Hema Kalliguddi | ea65df5 | 2010-09-22 19:27:40 -0500 | [diff] [blame] | 302 | struct device *dev = musb->controller; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 303 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 304 | struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); |
Hema Kalliguddi | ea65df5 | 2010-09-22 19:27:40 -0500 | [diff] [blame] | 305 | struct omap_musb_board_data *data = plat->board_data; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 306 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 307 | /* We require some kind of external transceiver, hooked |
| 308 | * up through ULPI. TWL4030-family PMICs include one, |
| 309 | * which needs a driver, drivers aren't always needed. |
| 310 | */ |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 311 | if (dev->parent->of_node) { |
| 312 | musb->phy = devm_phy_get(dev->parent, "usb2-phy"); |
| 313 | |
| 314 | /* We can't totally remove musb->xceiv as of now because |
| 315 | * musb core uses xceiv.state and xceiv.otg. Once we have |
| 316 | * a separate state machine to handle otg, these can be moved |
| 317 | * out of xceiv and then we can start using the generic PHY |
| 318 | * framework |
| 319 | */ |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 320 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, |
| 321 | "usb-phy", 0); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 322 | } else { |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 323 | musb->xceiv = devm_usb_get_phy_dev(dev, 0); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 324 | musb->phy = devm_phy_get(dev, "usb"); |
| 325 | } |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 326 | |
Felipe Balbi | a90199b | 2013-03-15 10:57:40 +0200 | [diff] [blame] | 327 | if (IS_ERR(musb->xceiv)) { |
| 328 | status = PTR_ERR(musb->xceiv); |
| 329 | |
| 330 | if (status == -ENXIO) |
| 331 | return status; |
| 332 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 333 | pr_err("HS USB OTG: no transceiver configured\n"); |
Ming Lei | 25736e0 | 2013-01-04 23:13:58 +0800 | [diff] [blame] | 334 | return -EPROBE_DEFER; |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 337 | if (IS_ERR(musb->phy)) { |
| 338 | pr_err("HS USB OTG: no PHY configured\n"); |
| 339 | return PTR_ERR(musb->phy); |
| 340 | } |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 341 | musb->isr = omap2430_musb_interrupt; |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 342 | phy_init(musb->phy); |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 343 | |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 344 | /* |
| 345 | * Enable runtime PM for musb parent (this driver). We can't |
| 346 | * do it earlier as struct musb is not yet allocated and we |
| 347 | * need to touch the musb registers for runtime PM. |
| 348 | */ |
| 349 | pm_runtime_enable(glue->dev); |
| 350 | status = pm_runtime_get_sync(glue->dev); |
| 351 | if (status < 0) |
| 352 | goto err1; |
| 353 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 354 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
Maulik Mankad | de2e1b0 | 2010-03-12 10:29:07 +0200 | [diff] [blame] | 355 | |
| 356 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
| 357 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ |
| 358 | l &= ~ULPI_12PIN; /* Disable ULPI */ |
| 359 | l |= UTMI_8BIT; /* Enable UTMI */ |
| 360 | } else { |
| 361 | l |= ULPI_12PIN; |
| 362 | } |
| 363 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 364 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 365 | |
| 366 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " |
| 367 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 368 | musb_readl(musb->mregs, OTG_REVISION), |
| 369 | musb_readl(musb->mregs, OTG_SYSCONFIG), |
| 370 | musb_readl(musb->mregs, OTG_SYSSTATUS), |
| 371 | musb_readl(musb->mregs, OTG_INTERFSEL), |
| 372 | musb_readl(musb->mregs, OTG_SIMENABLE)); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 373 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 374 | if (glue->status != MUSB_UNKNOWN) |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 375 | omap_musb_set_mailbox(glue); |
| 376 | |
Tony Lindgren | 7099dbc | 2016-05-31 10:05:11 -0500 | [diff] [blame] | 377 | pm_runtime_put(glue->dev); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 378 | return 0; |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 379 | |
| 380 | err1: |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 381 | return status; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 382 | } |
| 383 | |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 384 | static void omap2430_musb_enable(struct musb *musb) |
| 385 | { |
| 386 | u8 devctl; |
| 387 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
| 388 | struct device *dev = musb->controller; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 389 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 390 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 391 | struct omap_musb_board_data *data = pdata->board_data; |
| 392 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 393 | if (!WARN_ON(!musb->phy)) |
| 394 | phy_power_on(musb->phy); |
| 395 | |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 396 | omap2430_set_power(musb, true, glue->cable_connected); |
| 397 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 398 | switch (glue->status) { |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 399 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 400 | case MUSB_ID_GROUND: |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 401 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); |
Felipe Contreras | 08dec56 | 2011-12-19 22:17:50 +0200 | [diff] [blame] | 402 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
| 403 | break; |
| 404 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 405 | /* start the session */ |
| 406 | devctl |= MUSB_DEVCTL_SESSION; |
| 407 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 408 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
| 409 | MUSB_DEVCTL_BDEVICE) { |
| 410 | cpu_relax(); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 411 | |
Felipe Contreras | 08dec56 | 2011-12-19 22:17:50 +0200 | [diff] [blame] | 412 | if (time_after(jiffies, timeout)) { |
| 413 | dev_err(dev, "configured as A device timeout"); |
| 414 | break; |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 415 | } |
| 416 | } |
| 417 | break; |
| 418 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 419 | case MUSB_VBUS_VALID: |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 420 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 421 | break; |
| 422 | |
| 423 | default: |
| 424 | break; |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | static void omap2430_musb_disable(struct musb *musb) |
| 429 | { |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 430 | struct device *dev = musb->controller; |
| 431 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
| 432 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 433 | if (!WARN_ON(!musb->phy)) |
| 434 | phy_power_off(musb->phy); |
| 435 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 436 | if (glue->status != MUSB_UNKNOWN) |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 437 | omap_control_usb_set_mode(glue->control_otghs, |
| 438 | USB_MODE_DISCONNECT); |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 439 | |
| 440 | omap2430_set_power(musb, false, glue->cable_connected); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 441 | } |
| 442 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 443 | static int omap2430_musb_exit(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 444 | { |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 445 | struct device *dev = musb->controller; |
| 446 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 447 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 448 | omap2430_low_level_exit(musb); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 449 | phy_exit(musb->phy); |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 450 | musb->phy = NULL; |
| 451 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 452 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 453 | return 0; |
| 454 | } |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 455 | |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 456 | static const struct musb_platform_ops omap2430_ops = { |
Tony Lindgren | f8e9f34f | 2015-05-01 12:29:27 -0700 | [diff] [blame] | 457 | .quirks = MUSB_DMA_INVENTRA, |
Tony Lindgren | 7f6283e | 2015-05-01 12:29:28 -0700 | [diff] [blame] | 458 | #ifdef CONFIG_USB_INVENTRA_DMA |
| 459 | .dma_init = musbhs_dma_controller_create, |
| 460 | .dma_exit = musbhs_dma_controller_destroy, |
| 461 | #endif |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 462 | .init = omap2430_musb_init, |
| 463 | .exit = omap2430_musb_exit, |
| 464 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 465 | .set_vbus = omap2430_musb_set_vbus, |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 466 | |
| 467 | .enable = omap2430_musb_enable, |
| 468 | .disable = omap2430_musb_disable, |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 469 | |
| 470 | .phy_callback = omap2430_musb_mailbox, |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 471 | }; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 472 | |
| 473 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); |
| 474 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 475 | static int omap2430_probe(struct platform_device *pdev) |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 476 | { |
Kishon Vijay Abraham I | c1f01be | 2013-07-17 10:51:22 +0300 | [diff] [blame] | 477 | struct resource musb_resources[3]; |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 478 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 479 | struct omap_musb_board_data *data; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 480 | struct platform_device *musb; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 481 | struct omap2430_glue *glue; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 482 | struct device_node *np = pdev->dev.of_node; |
| 483 | struct musb_hdrc_config *config; |
Tony Lindgren | 606bf4d | 2015-02-04 06:28:49 -0800 | [diff] [blame] | 484 | int ret = -ENOMEM, val; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 485 | |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 486 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 487 | if (!glue) |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 488 | goto err0; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 489 | |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 490 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
| 491 | if (!musb) { |
| 492 | dev_err(&pdev->dev, "failed to allocate musb device\n"); |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 493 | goto err0; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | musb->dev.parent = &pdev->dev; |
| 497 | musb->dev.dma_mask = &omap2430_dmamask; |
| 498 | musb->dev.coherent_dma_mask = omap2430_dmamask; |
| 499 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 500 | glue->dev = &pdev->dev; |
| 501 | glue->musb = musb; |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 502 | glue->status = MUSB_UNKNOWN; |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 503 | glue->control_otghs = ERR_PTR(-ENODEV); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 504 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 505 | if (np) { |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 506 | struct device_node *control_node; |
| 507 | struct platform_device *control_pdev; |
| 508 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 509 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 510 | if (!pdata) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 511 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 512 | |
| 513 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 514 | if (!data) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 515 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 516 | |
| 517 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 518 | if (!config) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 519 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 520 | |
| 521 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); |
Kishon Vijay Abraham I | eee44da | 2013-03-07 18:51:46 +0530 | [diff] [blame] | 522 | of_property_read_u32(np, "interface-type", |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 523 | (u32 *)&data->interface_type); |
Kishon Vijay Abraham I | eee44da | 2013-03-07 18:51:46 +0530 | [diff] [blame] | 524 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); |
| 525 | of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 526 | of_property_read_u32(np, "power", (u32 *)&pdata->power); |
Tony Lindgren | 606bf4d | 2015-02-04 06:28:49 -0800 | [diff] [blame] | 527 | |
| 528 | ret = of_property_read_u32(np, "multipoint", &val); |
| 529 | if (!ret && val) |
| 530 | config->multipoint = true; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 531 | |
| 532 | pdata->board_data = data; |
| 533 | pdata->config = config; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 534 | |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 535 | control_node = of_parse_phandle(np, "ctrl-module", 0); |
| 536 | if (control_node) { |
| 537 | control_pdev = of_find_device_by_node(control_node); |
| 538 | if (!control_pdev) { |
| 539 | dev_err(&pdev->dev, "Failed to get control device\n"); |
| 540 | ret = -EINVAL; |
| 541 | goto err2; |
| 542 | } |
| 543 | glue->control_otghs = &control_pdev->dev; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 544 | } |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 545 | } |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 546 | pdata->platform_ops = &omap2430_ops; |
| 547 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 548 | platform_set_drvdata(pdev, glue); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 549 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 550 | /* |
| 551 | * REVISIT if we ever have two instances of the wrapper, we will be |
| 552 | * in big trouble |
| 553 | */ |
| 554 | _glue = glue; |
| 555 | |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 556 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
| 557 | |
Sebastian Andrzej Siewior | 3a0ddc7 | 2013-06-25 09:41:02 +0200 | [diff] [blame] | 558 | memset(musb_resources, 0x00, sizeof(*musb_resources) * |
Felipe Balbi | 09fc7d2 | 2013-04-24 17:21:42 +0300 | [diff] [blame] | 559 | ARRAY_SIZE(musb_resources)); |
| 560 | |
| 561 | musb_resources[0].name = pdev->resource[0].name; |
| 562 | musb_resources[0].start = pdev->resource[0].start; |
| 563 | musb_resources[0].end = pdev->resource[0].end; |
| 564 | musb_resources[0].flags = pdev->resource[0].flags; |
| 565 | |
| 566 | musb_resources[1].name = pdev->resource[1].name; |
| 567 | musb_resources[1].start = pdev->resource[1].start; |
| 568 | musb_resources[1].end = pdev->resource[1].end; |
| 569 | musb_resources[1].flags = pdev->resource[1].flags; |
| 570 | |
Kishon Vijay Abraham I | c1f01be | 2013-07-17 10:51:22 +0300 | [diff] [blame] | 571 | musb_resources[2].name = pdev->resource[2].name; |
| 572 | musb_resources[2].start = pdev->resource[2].start; |
| 573 | musb_resources[2].end = pdev->resource[2].end; |
| 574 | musb_resources[2].flags = pdev->resource[2].flags; |
| 575 | |
Felipe Balbi | 09fc7d2 | 2013-04-24 17:21:42 +0300 | [diff] [blame] | 576 | ret = platform_device_add_resources(musb, musb_resources, |
| 577 | ARRAY_SIZE(musb_resources)); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 578 | if (ret) { |
| 579 | dev_err(&pdev->dev, "failed to add resources\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 580 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); |
| 584 | if (ret) { |
| 585 | dev_err(&pdev->dev, "failed to add platform_data\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 586 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 587 | } |
| 588 | |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 589 | /* |
| 590 | * Note that we cannot enable PM runtime yet for this |
| 591 | * driver as we need struct musb initialized first. |
| 592 | * See omap2430_musb_init above. |
| 593 | */ |
Kishon Vijay Abraham I | 3006dc8 | 2012-03-21 21:30:20 +0530 | [diff] [blame] | 594 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 595 | ret = platform_device_add(musb); |
| 596 | if (ret) { |
| 597 | dev_err(&pdev->dev, "failed to register musb device\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 598 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | return 0; |
| 602 | |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 603 | err2: |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 604 | platform_device_put(musb); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 605 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 606 | err0: |
| 607 | return ret; |
| 608 | } |
| 609 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 610 | static int omap2430_remove(struct platform_device *pdev) |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 611 | { |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 612 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
| 613 | struct musb *musb = glue_to_musb(glue); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 614 | |
Tony Lindgren | 03e4352 | 2015-11-30 21:37:13 -0800 | [diff] [blame] | 615 | pm_runtime_get_sync(glue->dev); |
Kishon Vijay Abraham I | f039df5 | 2012-08-02 15:30:07 +0530 | [diff] [blame] | 616 | platform_device_unregister(glue->musb); |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 617 | omap2430_set_power(musb, false, false); |
Tony Lindgren | 03e4352 | 2015-11-30 21:37:13 -0800 | [diff] [blame] | 618 | pm_runtime_put_sync(glue->dev); |
| 619 | pm_runtime_disable(glue->dev); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 624 | #ifdef CONFIG_PM |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 625 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 626 | static int omap2430_runtime_suspend(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 627 | { |
| 628 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 629 | struct musb *musb = glue_to_musb(glue); |
| 630 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 631 | if (!musb) |
| 632 | return 0; |
Hema HK | e25bec1 | 2011-09-07 09:19:24 -0700 | [diff] [blame] | 633 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 634 | musb->context.otg_interfsel = musb_readl(musb->mregs, |
| 635 | OTG_INTERFSEL); |
| 636 | |
| 637 | omap2430_low_level_exit(musb); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 638 | |
| 639 | return 0; |
| 640 | } |
| 641 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 642 | static int omap2430_runtime_resume(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 643 | { |
| 644 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 645 | struct musb *musb = glue_to_musb(glue); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 646 | |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 647 | if (!musb) |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 648 | return 0; |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 649 | |
| 650 | omap2430_low_level_init(musb); |
| 651 | musb_writel(musb->mregs, OTG_INTERFSEL, |
| 652 | musb->context.otg_interfsel); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 653 | |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | static struct dev_pm_ops omap2430_pm_ops = { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 658 | .runtime_suspend = omap2430_runtime_suspend, |
| 659 | .runtime_resume = omap2430_runtime_resume, |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 660 | }; |
| 661 | |
| 662 | #define DEV_PM_OPS (&omap2430_pm_ops) |
| 663 | #else |
| 664 | #define DEV_PM_OPS NULL |
| 665 | #endif |
| 666 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 667 | #ifdef CONFIG_OF |
| 668 | static const struct of_device_id omap2430_id_table[] = { |
| 669 | { |
| 670 | .compatible = "ti,omap4-musb" |
| 671 | }, |
| 672 | { |
| 673 | .compatible = "ti,omap3-musb" |
| 674 | }, |
| 675 | {}, |
| 676 | }; |
| 677 | MODULE_DEVICE_TABLE(of, omap2430_id_table); |
| 678 | #endif |
| 679 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 680 | static struct platform_driver omap2430_driver = { |
Felipe Balbi | e9e8c85 | 2012-01-26 12:40:23 +0200 | [diff] [blame] | 681 | .probe = omap2430_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 682 | .remove = omap2430_remove, |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 683 | .driver = { |
| 684 | .name = "musb-omap2430", |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 685 | .pm = DEV_PM_OPS, |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 686 | .of_match_table = of_match_ptr(omap2430_id_table), |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 687 | }, |
| 688 | }; |
| 689 | |
| 690 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); |
| 691 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| 692 | MODULE_LICENSE("GPL v2"); |
| 693 | |
| 694 | static int __init omap2430_init(void) |
| 695 | { |
Felipe Balbi | e9e8c85 | 2012-01-26 12:40:23 +0200 | [diff] [blame] | 696 | return platform_driver_register(&omap2430_driver); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 697 | } |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 698 | subsys_initcall(omap2430_init); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 699 | |
| 700 | static void __exit omap2430_exit(void) |
| 701 | { |
| 702 | platform_driver_unregister(&omap2430_driver); |
| 703 | } |
| 704 | module_exit(omap2430_exit); |