Greg Kroah-Hartman | 5fd54ac | 2017-11-03 11:28:30 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2005-2007 by Texas Instruments |
| 4 | * Some code has been taken from tusb6010.c |
| 5 | * Copyrights for that are attributable to: |
| 6 | * Copyright (C) 2006 Nokia Corporation |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 7 | * Tony Lindgren <tony@atomide.com> |
| 8 | * |
| 9 | * This file is part of the Inventra Controller Driver for Linux. |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 10 | */ |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/sched.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 14 | #include <linux/init.h> |
| 15 | #include <linux/list.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 16 | #include <linux/io.h> |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 17 | #include <linux/of.h> |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/dma-mapping.h> |
Hema HK | 207b0e1 | 2011-02-17 12:07:22 +0530 | [diff] [blame] | 20 | #include <linux/pm_runtime.h> |
| 21 | #include <linux/err.h> |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 22 | #include <linux/delay.h> |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 23 | #include <linux/usb/musb.h> |
Kishon Vijay Abraham I | 14da699 | 2014-03-06 16:38:37 +0200 | [diff] [blame] | 24 | #include <linux/phy/omap_control_phy.h> |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 25 | #include <linux/of_platform.h> |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 26 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 27 | #include "musb_core.h" |
| 28 | #include "omap2430.h" |
| 29 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 30 | struct omap2430_glue { |
| 31 | struct device *dev; |
| 32 | struct platform_device *musb; |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 33 | enum musb_vbus_id_status status; |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 34 | struct work_struct omap_musb_mailbox_work; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 35 | struct device *control_otghs; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 36 | }; |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 37 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 38 | |
Aaro Koskinen | 4b58ed1 | 2013-03-05 13:04:24 +0200 | [diff] [blame] | 39 | static struct omap2430_glue *_glue; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 40 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 41 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 42 | { |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 43 | struct usb_otg *otg = musb->xceiv->otg; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 44 | u8 devctl; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 45 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 46 | /* HDRC controls CPEN, but beware current surges during device |
| 47 | * connect. They can trigger transient overcurrent conditions |
| 48 | * that must be ignored. |
| 49 | */ |
| 50 | |
| 51 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 52 | |
| 53 | if (is_on) { |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 54 | if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 55 | int loops = 100; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 56 | /* start the session */ |
| 57 | devctl |= MUSB_DEVCTL_SESSION; |
| 58 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 59 | /* |
| 60 | * Wait for the musb to set as A device to enable the |
| 61 | * VBUS |
| 62 | */ |
Sergei Shtylyov | 5a80530 | 2014-10-24 00:34:12 +0400 | [diff] [blame] | 63 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
| 64 | MUSB_DEVCTL_BDEVICE) { |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 65 | |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 66 | mdelay(5); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 67 | cpu_relax(); |
| 68 | |
NeilBrown | 12a19b5 | 2012-08-13 12:32:58 +1000 | [diff] [blame] | 69 | if (time_after(jiffies, timeout) |
| 70 | || loops-- <= 0) { |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 71 | dev_err(musb->controller, |
| 72 | "configured as A device timeout"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 73 | break; |
| 74 | } |
| 75 | } |
| 76 | |
Kishon Vijay Abraham I | bb467cf | 2013-03-14 11:53:56 +0530 | [diff] [blame] | 77 | otg_set_vbus(otg, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 78 | } else { |
| 79 | musb->is_active = 1; |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 80 | otg->default_a = 1; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 81 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 82 | devctl |= MUSB_DEVCTL_SESSION; |
| 83 | MUSB_HST_MODE(musb); |
| 84 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 85 | } else { |
| 86 | musb->is_active = 0; |
| 87 | |
| 88 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and |
| 89 | * jumping right to B_IDLE... |
| 90 | */ |
| 91 | |
Heikki Krogerus | d445b6d | 2012-02-13 13:24:15 +0200 | [diff] [blame] | 92 | otg->default_a = 0; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 93 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 94 | devctl &= ~MUSB_DEVCTL_SESSION; |
| 95 | |
| 96 | MUSB_DEV_MODE(musb); |
| 97 | } |
| 98 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 99 | |
Felipe Balbi | 5c8a86e | 2011-05-11 12:44:08 +0300 | [diff] [blame] | 100 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 101 | /* otg %3x conf %08x prcm %08x */ "\n", |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 102 | usb_otg_state_string(musb->xceiv->otg->state), |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 103 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
| 104 | } |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 105 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 106 | static inline void omap2430_low_level_exit(struct musb *musb) |
| 107 | { |
| 108 | u32 l; |
| 109 | |
| 110 | /* in any role */ |
| 111 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 112 | l |= ENABLEFORCE; /* enable MSTANDBY */ |
| 113 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | static inline void omap2430_low_level_init(struct musb *musb) |
| 117 | { |
| 118 | u32 l; |
| 119 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 120 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
| 121 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ |
| 122 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); |
| 123 | } |
| 124 | |
Tony Lindgren | 12b7db2 | 2016-05-31 10:05:19 -0500 | [diff] [blame] | 125 | static int omap2430_musb_mailbox(enum musb_vbus_id_status status) |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 126 | { |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 127 | struct omap2430_glue *glue = _glue; |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 128 | |
Aaro Koskinen | f8c4b0e | 2013-03-05 13:04:23 +0200 | [diff] [blame] | 129 | if (!glue) { |
| 130 | pr_err("%s: musb core is not yet initialized\n", __func__); |
Tony Lindgren | 12b7db2 | 2016-05-31 10:05:19 -0500 | [diff] [blame] | 131 | return -EPROBE_DEFER; |
Aaro Koskinen | f8c4b0e | 2013-03-05 13:04:23 +0200 | [diff] [blame] | 132 | } |
| 133 | glue->status = status; |
| 134 | |
| 135 | if (!glue_to_musb(glue)) { |
Aaro Koskinen | 80ab72e | 2012-12-23 01:24:51 +0200 | [diff] [blame] | 136 | pr_err("%s: musb core is not yet ready\n", __func__); |
Tony Lindgren | 12b7db2 | 2016-05-31 10:05:19 -0500 | [diff] [blame] | 137 | return -EPROBE_DEFER; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 138 | } |
| 139 | |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 140 | schedule_work(&glue->omap_musb_mailbox_work); |
Tony Lindgren | 12b7db2 | 2016-05-31 10:05:19 -0500 | [diff] [blame] | 141 | |
| 142 | return 0; |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 143 | } |
| 144 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 145 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
Vikram Pandita | 712d8ef | 2011-08-12 07:38:51 -0700 | [diff] [blame] | 146 | { |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 147 | struct musb *musb = glue_to_musb(glue); |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 148 | struct musb_hdrc_platform_data *pdata = |
| 149 | dev_get_platdata(musb->controller); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 150 | struct omap_musb_board_data *data = pdata->board_data; |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 151 | struct usb_otg *otg = musb->xceiv->otg; |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 152 | |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 153 | pm_runtime_get_sync(musb->controller); |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 154 | switch (glue->status) { |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 155 | case MUSB_ID_GROUND: |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 156 | dev_dbg(musb->controller, "ID GND\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 157 | |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 158 | otg->default_a = true; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 159 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 160 | musb->xceiv->last_event = USB_EVENT_ID; |
Felipe Balbi | 032ec49 | 2011-11-24 15:46:26 +0200 | [diff] [blame] | 161 | if (musb->gadget_driver) { |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 162 | omap_control_usb_set_mode(glue->control_otghs, |
| 163 | USB_MODE_HOST); |
Hema HK | 70045c5 | 2011-02-28 15:05:29 +0530 | [diff] [blame] | 164 | omap2430_musb_set_vbus(musb, 1); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 165 | } |
| 166 | break; |
| 167 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 168 | case MUSB_VBUS_VALID: |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 169 | dev_dbg(musb->controller, "VBUS Connect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 170 | |
Kishon Vijay Abraham I | c83a854 | 2012-06-22 17:40:53 +0530 | [diff] [blame] | 171 | otg->default_a = false; |
Antoine Tenart | e47d925 | 2014-10-30 18:41:13 +0100 | [diff] [blame] | 172 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 173 | musb->xceiv->last_event = USB_EVENT_VBUS; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 174 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 175 | break; |
| 176 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 177 | case MUSB_ID_FLOAT: |
| 178 | case MUSB_VBUS_OFF: |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 179 | dev_dbg(musb->controller, "VBUS Disconnect\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 180 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 181 | musb->xceiv->last_event = USB_EVENT_NONE; |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 182 | if (musb->gadget_driver) |
Grazvydas Ignotas | 2c1fe89 | 2013-03-24 17:36:54 +0200 | [diff] [blame] | 183 | omap2430_musb_set_vbus(musb, 0); |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 184 | |
Kishon Vijay Abraham I | bb467cf | 2013-03-14 11:53:56 +0530 | [diff] [blame] | 185 | if (data->interface_type == MUSB_INTERFACE_UTMI) |
| 186 | otg_set_vbus(musb->xceiv->otg, 0); |
| 187 | |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 188 | omap_control_usb_set_mode(glue->control_otghs, |
| 189 | USB_MODE_DISCONNECT); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 190 | break; |
| 191 | default: |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 192 | dev_dbg(musb->controller, "ID float\n"); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 193 | } |
Tony Lindgren | ae909fe | 2016-09-12 21:48:30 -0500 | [diff] [blame] | 194 | pm_runtime_mark_last_busy(musb->controller); |
| 195 | pm_runtime_put_autosuspend(musb->controller); |
Pali Rohár | 6fa7178 | 2013-09-18 19:03:34 +0200 | [diff] [blame] | 196 | atomic_notifier_call_chain(&musb->xceiv->notifier, |
| 197 | musb->xceiv->last_event, NULL); |
Hema HK | 594632e | 2010-12-10 18:10:51 +0530 | [diff] [blame] | 198 | } |
| 199 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 200 | |
| 201 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) |
| 202 | { |
| 203 | struct omap2430_glue *glue = container_of(mailbox_work, |
| 204 | struct omap2430_glue, omap_musb_mailbox_work); |
Felipe Balbi | 8b2bc2c | 2014-04-07 10:58:01 -0500 | [diff] [blame] | 205 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 206 | omap_musb_set_mailbox(glue); |
| 207 | } |
| 208 | |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 209 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
| 210 | { |
| 211 | unsigned long flags; |
| 212 | irqreturn_t retval = IRQ_NONE; |
| 213 | struct musb *musb = __hci; |
| 214 | |
| 215 | spin_lock_irqsave(&musb->lock, flags); |
| 216 | |
| 217 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); |
| 218 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); |
| 219 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); |
| 220 | |
| 221 | if (musb->int_usb || musb->int_tx || musb->int_rx) |
| 222 | retval = musb_interrupt(musb); |
| 223 | |
| 224 | spin_unlock_irqrestore(&musb->lock, flags); |
| 225 | |
| 226 | return retval; |
| 227 | } |
| 228 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 229 | static int omap2430_musb_init(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 230 | { |
Shubhrajyoti D | ad57969 | 2012-03-22 12:48:06 +0530 | [diff] [blame] | 231 | u32 l; |
| 232 | int status = 0; |
Hema Kalliguddi | ea65df5 | 2010-09-22 19:27:40 -0500 | [diff] [blame] | 233 | struct device *dev = musb->controller; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 234 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 235 | struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); |
Hema Kalliguddi | ea65df5 | 2010-09-22 19:27:40 -0500 | [diff] [blame] | 236 | struct omap_musb_board_data *data = plat->board_data; |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 237 | |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 238 | /* We require some kind of external transceiver, hooked |
| 239 | * up through ULPI. TWL4030-family PMICs include one, |
| 240 | * which needs a driver, drivers aren't always needed. |
| 241 | */ |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 242 | if (dev->parent->of_node) { |
| 243 | musb->phy = devm_phy_get(dev->parent, "usb2-phy"); |
| 244 | |
| 245 | /* We can't totally remove musb->xceiv as of now because |
| 246 | * musb core uses xceiv.state and xceiv.otg. Once we have |
| 247 | * a separate state machine to handle otg, these can be moved |
| 248 | * out of xceiv and then we can start using the generic PHY |
| 249 | * framework |
| 250 | */ |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 251 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, |
| 252 | "usb-phy", 0); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 253 | } else { |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 254 | musb->xceiv = devm_usb_get_phy_dev(dev, 0); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 255 | musb->phy = devm_phy_get(dev, "usb"); |
| 256 | } |
Kishon Vijay Abraham I | b16604f | 2013-01-25 08:03:26 +0530 | [diff] [blame] | 257 | |
Felipe Balbi | a90199b | 2013-03-15 10:57:40 +0200 | [diff] [blame] | 258 | if (IS_ERR(musb->xceiv)) { |
| 259 | status = PTR_ERR(musb->xceiv); |
| 260 | |
| 261 | if (status == -ENXIO) |
| 262 | return status; |
| 263 | |
Ladislav Michl | dc66ba8 | 2016-11-21 08:59:26 -0600 | [diff] [blame] | 264 | dev_dbg(dev, "HS USB OTG: no transceiver configured\n"); |
Ming Lei | 25736e0 | 2013-01-04 23:13:58 +0800 | [diff] [blame] | 265 | return -EPROBE_DEFER; |
David Brownell | 84e250f | 2009-03-31 12:30:04 -0700 | [diff] [blame] | 266 | } |
| 267 | |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 268 | if (IS_ERR(musb->phy)) { |
Ladislav Michl | 71127a7 | 2016-11-21 08:59:25 -0600 | [diff] [blame] | 269 | dev_err(dev, "HS USB OTG: no PHY configured\n"); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 270 | return PTR_ERR(musb->phy); |
| 271 | } |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 272 | musb->isr = omap2430_musb_interrupt; |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 273 | phy_init(musb->phy); |
Tony Lindgren | d8e5f0e | 2016-10-19 12:03:39 -0500 | [diff] [blame] | 274 | phy_power_on(musb->phy); |
Philippe De Swert | baef653 | 2012-11-06 15:32:13 +0200 | [diff] [blame] | 275 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 276 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
Maulik Mankad | de2e1b0 | 2010-03-12 10:29:07 +0200 | [diff] [blame] | 277 | |
| 278 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
| 279 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ |
| 280 | l &= ~ULPI_12PIN; /* Disable ULPI */ |
| 281 | l |= UTMI_8BIT; /* Enable UTMI */ |
| 282 | } else { |
| 283 | l |= ULPI_12PIN; |
| 284 | } |
| 285 | |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 286 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 287 | |
Ladislav Michl | 71127a7 | 2016-11-21 08:59:25 -0600 | [diff] [blame] | 288 | dev_dbg(dev, "HS USB OTG: revision 0x%x, sysconfig 0x%02x, " |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 289 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", |
Felipe Balbi | 8573e6a | 2010-01-21 15:33:53 +0200 | [diff] [blame] | 290 | musb_readl(musb->mregs, OTG_REVISION), |
| 291 | musb_readl(musb->mregs, OTG_SYSCONFIG), |
| 292 | musb_readl(musb->mregs, OTG_SYSSTATUS), |
| 293 | musb_readl(musb->mregs, OTG_INTERFSEL), |
| 294 | musb_readl(musb->mregs, OTG_SIMENABLE)); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 295 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 296 | if (glue->status != MUSB_UNKNOWN) |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 297 | omap_musb_set_mailbox(glue); |
| 298 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 299 | return 0; |
| 300 | } |
| 301 | |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 302 | static void omap2430_musb_enable(struct musb *musb) |
| 303 | { |
| 304 | u8 devctl; |
| 305 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
| 306 | struct device *dev = musb->controller; |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 307 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 308 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 309 | struct omap_musb_board_data *data = pdata->board_data; |
| 310 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 311 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 312 | switch (glue->status) { |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 313 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 314 | case MUSB_ID_GROUND: |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 315 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); |
Felipe Contreras | 08dec56 | 2011-12-19 22:17:50 +0200 | [diff] [blame] | 316 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
| 317 | break; |
| 318 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); |
| 319 | /* start the session */ |
| 320 | devctl |= MUSB_DEVCTL_SESSION; |
| 321 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); |
| 322 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
| 323 | MUSB_DEVCTL_BDEVICE) { |
| 324 | cpu_relax(); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 325 | |
Felipe Contreras | 08dec56 | 2011-12-19 22:17:50 +0200 | [diff] [blame] | 326 | if (time_after(jiffies, timeout)) { |
| 327 | dev_err(dev, "configured as A device timeout"); |
| 328 | break; |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 329 | } |
| 330 | } |
| 331 | break; |
| 332 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 333 | case MUSB_VBUS_VALID: |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 334 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 335 | break; |
| 336 | |
| 337 | default: |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | static void omap2430_musb_disable(struct musb *musb) |
| 343 | { |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 344 | struct device *dev = musb->controller; |
| 345 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
| 346 | |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 347 | if (glue->status != MUSB_UNKNOWN) |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 348 | omap_control_usb_set_mode(glue->control_otghs, |
| 349 | USB_MODE_DISCONNECT); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 350 | } |
| 351 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 352 | static int omap2430_musb_exit(struct musb *musb) |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 353 | { |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 354 | struct device *dev = musb->controller; |
| 355 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 356 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 357 | omap2430_low_level_exit(musb); |
Tony Lindgren | d8e5f0e | 2016-10-19 12:03:39 -0500 | [diff] [blame] | 358 | phy_power_off(musb->phy); |
Kishon Vijay Abraham I | 3e3101d | 2013-09-27 11:53:30 +0530 | [diff] [blame] | 359 | phy_exit(musb->phy); |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 360 | musb->phy = NULL; |
| 361 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 362 | |
Felipe Balbi | 550a737 | 2008-07-24 12:27:36 +0300 | [diff] [blame] | 363 | return 0; |
| 364 | } |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 365 | |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 366 | static const struct musb_platform_ops omap2430_ops = { |
Tony Lindgren | f8e9f34f | 2015-05-01 12:29:27 -0700 | [diff] [blame] | 367 | .quirks = MUSB_DMA_INVENTRA, |
Tony Lindgren | 7f6283e | 2015-05-01 12:29:28 -0700 | [diff] [blame] | 368 | #ifdef CONFIG_USB_INVENTRA_DMA |
| 369 | .dma_init = musbhs_dma_controller_create, |
| 370 | .dma_exit = musbhs_dma_controller_destroy, |
| 371 | #endif |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 372 | .init = omap2430_musb_init, |
| 373 | .exit = omap2430_musb_exit, |
| 374 | |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 375 | .set_vbus = omap2430_musb_set_vbus, |
Hema HK | 002eda1 | 2011-02-17 12:06:10 +0530 | [diff] [blame] | 376 | |
| 377 | .enable = omap2430_musb_enable, |
| 378 | .disable = omap2430_musb_disable, |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 379 | |
| 380 | .phy_callback = omap2430_musb_mailbox, |
Felipe Balbi | 743411b | 2010-12-01 13:22:05 +0200 | [diff] [blame] | 381 | }; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 382 | |
| 383 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); |
| 384 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 385 | static int omap2430_probe(struct platform_device *pdev) |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 386 | { |
Kishon Vijay Abraham I | c1f01be | 2013-07-17 10:51:22 +0300 | [diff] [blame] | 387 | struct resource musb_resources[3]; |
Jingoo Han | c1a7d67 | 2013-07-30 17:03:12 +0900 | [diff] [blame] | 388 | 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] | 389 | struct omap_musb_board_data *data; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 390 | struct platform_device *musb; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 391 | struct omap2430_glue *glue; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 392 | struct device_node *np = pdev->dev.of_node; |
| 393 | struct musb_hdrc_config *config; |
Tony Lindgren | 606bf4d | 2015-02-04 06:28:49 -0800 | [diff] [blame] | 394 | int ret = -ENOMEM, val; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 395 | |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 396 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 397 | if (!glue) |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 398 | goto err0; |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 399 | |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 400 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
| 401 | if (!musb) { |
| 402 | dev_err(&pdev->dev, "failed to allocate musb device\n"); |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 403 | goto err0; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | musb->dev.parent = &pdev->dev; |
| 407 | musb->dev.dma_mask = &omap2430_dmamask; |
| 408 | musb->dev.coherent_dma_mask = omap2430_dmamask; |
| 409 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 410 | glue->dev = &pdev->dev; |
| 411 | glue->musb = musb; |
Tony Lindgren | 8055555 | 2015-11-30 21:37:12 -0800 | [diff] [blame] | 412 | glue->status = MUSB_UNKNOWN; |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 413 | glue->control_otghs = ERR_PTR(-ENODEV); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 414 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 415 | if (np) { |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 416 | struct device_node *control_node; |
| 417 | struct platform_device *control_pdev; |
| 418 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 419 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 420 | if (!pdata) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 421 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 422 | |
| 423 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 424 | if (!data) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 425 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 426 | |
| 427 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); |
Peter Chen | af1bdfc | 2014-10-14 15:56:08 +0800 | [diff] [blame] | 428 | if (!config) |
Sebastian Andrzej Siewior | 2f77116 | 2012-10-31 16:12:43 +0100 | [diff] [blame] | 429 | goto err2; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 430 | |
| 431 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); |
Kishon Vijay Abraham I | eee44da | 2013-03-07 18:51:46 +0530 | [diff] [blame] | 432 | of_property_read_u32(np, "interface-type", |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 433 | (u32 *)&data->interface_type); |
Kishon Vijay Abraham I | eee44da | 2013-03-07 18:51:46 +0530 | [diff] [blame] | 434 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); |
| 435 | 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] | 436 | of_property_read_u32(np, "power", (u32 *)&pdata->power); |
Tony Lindgren | 606bf4d | 2015-02-04 06:28:49 -0800 | [diff] [blame] | 437 | |
| 438 | ret = of_property_read_u32(np, "multipoint", &val); |
| 439 | if (!ret && val) |
| 440 | config->multipoint = true; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 441 | |
| 442 | pdata->board_data = data; |
| 443 | pdata->config = config; |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 444 | |
Roger Quadros | 8934d3e | 2013-10-03 18:12:34 +0300 | [diff] [blame] | 445 | control_node = of_parse_phandle(np, "ctrl-module", 0); |
| 446 | if (control_node) { |
| 447 | control_pdev = of_find_device_by_node(control_node); |
| 448 | if (!control_pdev) { |
| 449 | dev_err(&pdev->dev, "Failed to get control device\n"); |
| 450 | ret = -EINVAL; |
| 451 | goto err2; |
| 452 | } |
| 453 | glue->control_otghs = &control_pdev->dev; |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 454 | } |
Kishon Vijay Abraham I | ca784be | 2013-01-25 15:54:00 +0530 | [diff] [blame] | 455 | } |
Felipe Balbi | f7ec943 | 2010-12-02 09:48:58 +0200 | [diff] [blame] | 456 | pdata->platform_ops = &omap2430_ops; |
| 457 | |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 458 | platform_set_drvdata(pdev, glue); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 459 | |
Kishon Vijay Abraham I | c972143 | 2012-06-22 17:40:52 +0530 | [diff] [blame] | 460 | /* |
| 461 | * REVISIT if we ever have two instances of the wrapper, we will be |
| 462 | * in big trouble |
| 463 | */ |
| 464 | _glue = glue; |
| 465 | |
Kishon Vijay Abraham I | 1e5acb8 | 2012-06-22 17:40:51 +0530 | [diff] [blame] | 466 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
| 467 | |
Sebastian Andrzej Siewior | 3a0ddc7 | 2013-06-25 09:41:02 +0200 | [diff] [blame] | 468 | memset(musb_resources, 0x00, sizeof(*musb_resources) * |
Felipe Balbi | 09fc7d2 | 2013-04-24 17:21:42 +0300 | [diff] [blame] | 469 | ARRAY_SIZE(musb_resources)); |
| 470 | |
| 471 | musb_resources[0].name = pdev->resource[0].name; |
| 472 | musb_resources[0].start = pdev->resource[0].start; |
| 473 | musb_resources[0].end = pdev->resource[0].end; |
| 474 | musb_resources[0].flags = pdev->resource[0].flags; |
| 475 | |
| 476 | musb_resources[1].name = pdev->resource[1].name; |
| 477 | musb_resources[1].start = pdev->resource[1].start; |
| 478 | musb_resources[1].end = pdev->resource[1].end; |
| 479 | musb_resources[1].flags = pdev->resource[1].flags; |
| 480 | |
Kishon Vijay Abraham I | c1f01be | 2013-07-17 10:51:22 +0300 | [diff] [blame] | 481 | musb_resources[2].name = pdev->resource[2].name; |
| 482 | musb_resources[2].start = pdev->resource[2].start; |
| 483 | musb_resources[2].end = pdev->resource[2].end; |
| 484 | musb_resources[2].flags = pdev->resource[2].flags; |
| 485 | |
Felipe Balbi | 09fc7d2 | 2013-04-24 17:21:42 +0300 | [diff] [blame] | 486 | ret = platform_device_add_resources(musb, musb_resources, |
| 487 | ARRAY_SIZE(musb_resources)); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 488 | if (ret) { |
| 489 | dev_err(&pdev->dev, "failed to add resources\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 490 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); |
| 494 | if (ret) { |
| 495 | dev_err(&pdev->dev, "failed to add platform_data\n"); |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 496 | goto err2; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 497 | } |
| 498 | |
Tony Lindgren | 87326e8 | 2016-05-31 10:05:20 -0500 | [diff] [blame] | 499 | pm_runtime_enable(glue->dev); |
Kishon Vijay Abraham I | 3006dc8 | 2012-03-21 21:30:20 +0530 | [diff] [blame] | 500 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 501 | ret = platform_device_add(musb); |
| 502 | if (ret) { |
| 503 | dev_err(&pdev->dev, "failed to register musb device\n"); |
Tony Lindgren | 536d599 | 2016-11-16 13:21:25 -0600 | [diff] [blame] | 504 | goto err3; |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | return 0; |
| 508 | |
Tony Lindgren | 536d599 | 2016-11-16 13:21:25 -0600 | [diff] [blame] | 509 | err3: |
| 510 | pm_runtime_disable(glue->dev); |
| 511 | |
B, Ravi | 65b3d52 | 2012-08-31 11:09:49 +0000 | [diff] [blame] | 512 | err2: |
Kishon Vijay Abraham I | b1183c2 | 2012-06-22 17:40:54 +0530 | [diff] [blame] | 513 | platform_device_put(musb); |
Felipe Balbi | a3cee12 | 2010-12-02 09:27:29 +0200 | [diff] [blame] | 514 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 515 | err0: |
| 516 | return ret; |
| 517 | } |
| 518 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 519 | static int omap2430_remove(struct platform_device *pdev) |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 520 | { |
Tony Lindgren | 21f77be | 2016-05-31 10:05:15 -0500 | [diff] [blame] | 521 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 522 | |
Kishon Vijay Abraham I | f039df5 | 2012-08-02 15:30:07 +0530 | [diff] [blame] | 523 | platform_device_unregister(glue->musb); |
Tony Lindgren | 03e4352 | 2015-11-30 21:37:13 -0800 | [diff] [blame] | 524 | pm_runtime_disable(glue->dev); |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 525 | |
| 526 | return 0; |
| 527 | } |
| 528 | |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 529 | #ifdef CONFIG_PM |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 530 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 531 | static int omap2430_runtime_suspend(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 532 | { |
| 533 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 534 | struct musb *musb = glue_to_musb(glue); |
| 535 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 536 | if (!musb) |
| 537 | return 0; |
Hema HK | e25bec1 | 2011-09-07 09:19:24 -0700 | [diff] [blame] | 538 | |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 539 | musb->context.otg_interfsel = musb_readl(musb->mregs, |
| 540 | OTG_INTERFSEL); |
| 541 | |
| 542 | omap2430_low_level_exit(musb); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 543 | |
| 544 | return 0; |
| 545 | } |
| 546 | |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 547 | static int omap2430_runtime_resume(struct device *dev) |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 548 | { |
| 549 | struct omap2430_glue *glue = dev_get_drvdata(dev); |
| 550 | struct musb *musb = glue_to_musb(glue); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 551 | |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 552 | if (!musb) |
Tony Lindgren | a83e17d | 2016-05-31 10:05:16 -0500 | [diff] [blame] | 553 | return 0; |
Tony Lindgren | 8f2279d | 2015-10-28 10:16:04 -0700 | [diff] [blame] | 554 | |
| 555 | omap2430_low_level_init(musb); |
| 556 | musb_writel(musb->mregs, OTG_INTERFSEL, |
| 557 | musb->context.otg_interfsel); |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 558 | |
| 559 | return 0; |
| 560 | } |
| 561 | |
Bhumika Goyal | c0927fe | 2017-02-01 21:30:26 -0600 | [diff] [blame] | 562 | static const struct dev_pm_ops omap2430_pm_ops = { |
Hema HK | 7acc619 | 2011-02-28 14:19:34 +0530 | [diff] [blame] | 563 | .runtime_suspend = omap2430_runtime_suspend, |
| 564 | .runtime_resume = omap2430_runtime_resume, |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 565 | }; |
| 566 | |
| 567 | #define DEV_PM_OPS (&omap2430_pm_ops) |
| 568 | #else |
| 569 | #define DEV_PM_OPS NULL |
| 570 | #endif |
| 571 | |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 572 | #ifdef CONFIG_OF |
| 573 | static const struct of_device_id omap2430_id_table[] = { |
| 574 | { |
| 575 | .compatible = "ti,omap4-musb" |
| 576 | }, |
| 577 | { |
| 578 | .compatible = "ti,omap3-musb" |
| 579 | }, |
| 580 | {}, |
| 581 | }; |
| 582 | MODULE_DEVICE_TABLE(of, omap2430_id_table); |
| 583 | #endif |
| 584 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 585 | static struct platform_driver omap2430_driver = { |
Felipe Balbi | e9e8c85 | 2012-01-26 12:40:23 +0200 | [diff] [blame] | 586 | .probe = omap2430_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 587 | .remove = omap2430_remove, |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 588 | .driver = { |
| 589 | .name = "musb-omap2430", |
Felipe Balbi | c20aebb | 2010-12-02 12:44:40 +0200 | [diff] [blame] | 590 | .pm = DEV_PM_OPS, |
Kishon Vijay Abraham I | 00a0b1d | 2012-09-11 14:39:40 +0530 | [diff] [blame] | 591 | .of_match_table = of_match_ptr(omap2430_id_table), |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 592 | }, |
| 593 | }; |
| 594 | |
Tony Lindgren | aec373c | 2016-05-31 10:05:22 -0500 | [diff] [blame] | 595 | module_platform_driver(omap2430_driver); |
| 596 | |
Felipe Balbi | dc09886 | 2010-12-01 15:01:11 +0200 | [diff] [blame] | 597 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); |
| 598 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
| 599 | MODULE_LICENSE("GPL v2"); |