mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 22:07:49 +07:00
30a70b026b
phy_power_off() can, depending on the PHY being used, start I2C transactions which shouldn't happen in atomic context. Current call to phy_power_off() inside omap2430_runtime callbacks causes the following dump, as a fix, just don't power off the PHY in runtime. [ 18.606414] [<c037eac0>] (__schedule+0x5c/0x50c) from [<c037d3bc>] (schedule_timeout+0x1f4/0x25c) [ 18.623809] [<c037d3bc>] (schedule_timeout+0x1f4/0x25c) from [<c037f12c>] (wait_for_common+0xc8/0x1ac) [ 18.649291] [<c037f12c>] (wait_for_common+0xc8/0x1ac) from [<c028c1c0>] (omap_i2c_xfer+0x338/0x488) [ 18.674499] [<c028c1c0>] (omap_i2c_xfer+0x338/0x488) from [<c0288144>] (__i2c_transfer+0x40/0x74) [ 18.692047] [<c0288144>] (__i2c_transfer+0x40/0x74) from [<c0288a2c>] (i2c_transfer+0x6c/0x90) [ 18.709320] [<c0288a2c>] (i2c_transfer+0x6c/0x90) from [<c02351c8>] (regmap_i2c_read+0x48/0x68) [ 18.726715] [<c02351c8>] (regmap_i2c_read+0x48/0x68) from [<c023161c>] (_regmap_raw_read+0x128/0x220) [ 18.752685] [<c023161c>] (_regmap_raw_read+0x128/0x220) from [<c02317b4>] (regmap_raw_read+0xa0/0x130) [ 18.779052] [<c02317b4>] (regmap_raw_read+0xa0/0x130) from [<c023193c>] (regmap_bulk_read+0xf8/0x16c) [ 18.805694] [<c023193c>] (regmap_bulk_read+0xf8/0x16c) from [<c0238ea8>] (twl_i2c_read+0xa4/0xe0) [ 18.823730] [<c0238ea8>] (twl_i2c_read+0xa4/0xe0) from [<c0274d34>] (__twl4030_phy_power.isra.12+0x1c/0x58) [ 18.850921] [<c0274d34>] (__twl4030_phy_power.isra.12+0x1c/0x58) from [<c0274df0>] (twl4030_phy_power.part.14+0x80/0xc8) [ 18.879699] [<c0274df0>] (twl4030_phy_power.part.14+0x80/0xc8) from [<c0274f9c>] (twl4030_set_suspend+0x54/0x1e8) [ 18.908325] [<c0274f9c>] (twl4030_set_suspend+0x54/0x1e8) from [<c027c8c4>] (omap2430_runtime_resume+0x5c/0x64) [ 18.937042] [<c027c8c4>] (omap2430_runtime_resume+0x5c/0x64) from [<c0225dd0>] (pm_generic_runtime_resume+0x2c/0x38) [ 18.966461] [<c0225dd0>] (pm_generic_runtime_resume+0x2c/0x38) from [<c0229fe0>] (__rpm_callback+0x54/0x80) [ 18.995117] [<c0229fe0>] (__rpm_callback+0x54/0x80) from [<c022a04c>] (rpm_callback+0x40/0x74) [ 19.013610] [<c022a04c>] (rpm_callback+0x40/0x74) from [<c022b3c8>] (rpm_resume+0x448/0x63c) [ 19.031921] [<c022b3c8>] (rpm_resume+0x448/0x63c) from [<c022b2e4>] (rpm_resume+0x364/0x63c) [ 19.050140] [<c022b2e4>] (rpm_resume+0x364/0x63c) from [<c022b874>] (__pm_runtime_resume+0x48/0x74) [ 19.077728] [<c022b874>] (__pm_runtime_resume+0x48/0x74) from [<c027b4fc>] (musb_gadget_pullup+0x1c/0xb4) [ 19.105895] [<c027b4fc>] (musb_gadget_pullup+0x1c/0xb4) from [<bf025c14>] (usb_function_deactivate+0x54/0xa4 [libcomposite]) [ 19.135955] [<bf025c14>] (usb_function_deactivate+0x54/0xa4 [libcomposite]) from [<bf05b3b8>] (obex_bind+0x124/0x1d8 [usb_f_obex]) [ 19.166870] [<bf05b3b8>] (obex_bind+0x124/0x1d8 [usb_f_obex]) from [<bf025794>] (usb_add_function+0x58/0xf4 [libcomposite]) [ 19.197143] [<bf025794>] (usb_add_function+0x58/0xf4 [libcomposite]) from [<bf037420>] (nokia_bind_config+0x204/0x250 [g_nokia]) [ 19.227905] [<bf037420>] (nokia_bind_config+0x204/0x250 [g_nokia]) from [<bf0263fc>] (usb_add_config+0x28/0xc0 [libcomposite]) [ 19.258483] [<bf0263fc>] (usb_add_config+0x28/0xc0 [libcomposite]) from [<bf03709c>] (nokia_bind+0x9c/0x21c [g_nokia]) [ 19.288421] [<bf03709c>] (nokia_bind+0x9c/0x21c [g_nokia]) from [<bf0275bc>] (composite_bind+0x74/0x180 [libcomposite]) [ 19.318420] [<bf0275bc>] (composite_bind+0x74/0x180 [libcomposite]) from [<c027d658>] (udc_bind_to_driver+0x2c/0xc4) [ 19.348114] [<c027d658>] (udc_bind_to_driver+0x2c/0xc4) from [<c027d764>] (usb_gadget_probe_driver+0x74/0x94) [ 19.377166] [<c027d764>] (usb_gadget_probe_driver+0x74/0x94) from [<c00086f8>] (do_one_initcall+0x94/0x138) [ 19.406005] [<c00086f8>] (do_one_initcall+0x94/0x138) from [<c007a460>] (load_module+0x113c/0x13c4) [ 19.434051] [<c007a460>] (load_module+0x113c/0x13c4) from [<c007a7b4>] (SyS_init_module+0xcc/0xec) [ 19.462127] [<c007a7b4>] (SyS_init_module+0xcc/0xec) from [<c000dd40>] (ret_fast_syscall+0x0/0x30) [ 19.490753] Code: 0a00002e e1a00004 eb001438 e598300c (e5d3202c) [ 19.506805] ---[ end trace 060b62ec0d68a78b ]--- [ 19.523132] Kernel panic - not syncing: Fatal exception in interrupt dump is from 3.12-rc5 kernel Reported-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
729 lines
18 KiB
C
729 lines
18 KiB
C
/*
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* Copyright (C) 2005-2007 by Texas Instruments
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* Some code has been taken from tusb6010.c
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* Copyrights for that are attributable to:
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* Copyright (C) 2006 Nokia Corporation
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* Tony Lindgren <tony@atomide.com>
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*
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* This file is part of the Inventra Controller Driver for Linux.
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*
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* The Inventra Controller Driver for Linux is free software; you
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* can redistribute it and/or modify it under the terms of the GNU
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* General Public License version 2 as published by the Free Software
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* Foundation.
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*
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* The Inventra Controller Driver for Linux is distributed in
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* the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with The Inventra Controller Driver for Linux ; if not,
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* write to the Free Software Foundation, Inc., 59 Temple Place,
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* Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/pm_runtime.h>
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <linux/usb/musb-omap.h>
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#include <linux/usb/omap_control_usb.h>
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#include <linux/of_platform.h>
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#include "musb_core.h"
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#include "omap2430.h"
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struct omap2430_glue {
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struct device *dev;
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struct platform_device *musb;
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enum omap_musb_vbus_id_status status;
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struct work_struct omap_musb_mailbox_work;
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struct device *control_otghs;
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};
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#define glue_to_musb(g) platform_get_drvdata(g->musb)
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static struct omap2430_glue *_glue;
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static struct timer_list musb_idle_timer;
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static void musb_do_idle(unsigned long _musb)
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{
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struct musb *musb = (void *)_musb;
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unsigned long flags;
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u8 power;
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u8 devctl;
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spin_lock_irqsave(&musb->lock, flags);
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switch (musb->xceiv->state) {
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case OTG_STATE_A_WAIT_BCON:
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devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
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if (devctl & MUSB_DEVCTL_BDEVICE) {
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musb->xceiv->state = OTG_STATE_B_IDLE;
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MUSB_DEV_MODE(musb);
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} else {
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musb->xceiv->state = OTG_STATE_A_IDLE;
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MUSB_HST_MODE(musb);
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}
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break;
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case OTG_STATE_A_SUSPEND:
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/* finish RESUME signaling? */
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if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
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power = musb_readb(musb->mregs, MUSB_POWER);
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power &= ~MUSB_POWER_RESUME;
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dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power);
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musb_writeb(musb->mregs, MUSB_POWER, power);
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musb->is_active = 1;
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musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
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| MUSB_PORT_STAT_RESUME);
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musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;
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usb_hcd_poll_rh_status(musb->hcd);
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/* NOTE: it might really be A_WAIT_BCON ... */
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musb->xceiv->state = OTG_STATE_A_HOST;
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}
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break;
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case OTG_STATE_A_HOST:
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devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
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if (devctl & MUSB_DEVCTL_BDEVICE)
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musb->xceiv->state = OTG_STATE_B_IDLE;
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else
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musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
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default:
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break;
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}
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spin_unlock_irqrestore(&musb->lock, flags);
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}
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static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
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{
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unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
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static unsigned long last_timer;
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if (timeout == 0)
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timeout = default_timeout;
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/* Never idle if active, or when VBUS timeout is not set as host */
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if (musb->is_active || ((musb->a_wait_bcon == 0)
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&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
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dev_dbg(musb->controller, "%s active, deleting timer\n",
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usb_otg_state_string(musb->xceiv->state));
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del_timer(&musb_idle_timer);
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last_timer = jiffies;
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return;
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}
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if (time_after(last_timer, timeout)) {
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if (!timer_pending(&musb_idle_timer))
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last_timer = timeout;
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else {
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dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n");
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return;
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}
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}
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last_timer = timeout;
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dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n",
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usb_otg_state_string(musb->xceiv->state),
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(unsigned long)jiffies_to_msecs(timeout - jiffies));
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mod_timer(&musb_idle_timer, timeout);
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}
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static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
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{
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struct usb_otg *otg = musb->xceiv->otg;
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u8 devctl;
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unsigned long timeout = jiffies + msecs_to_jiffies(1000);
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/* HDRC controls CPEN, but beware current surges during device
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* connect. They can trigger transient overcurrent conditions
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* that must be ignored.
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*/
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devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
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if (is_on) {
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if (musb->xceiv->state == OTG_STATE_A_IDLE) {
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int loops = 100;
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/* start the session */
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devctl |= MUSB_DEVCTL_SESSION;
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musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
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/*
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* Wait for the musb to set as A device to enable the
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* VBUS
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*/
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while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {
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mdelay(5);
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cpu_relax();
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if (time_after(jiffies, timeout)
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|| loops-- <= 0) {
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dev_err(musb->controller,
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"configured as A device timeout");
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break;
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}
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}
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otg_set_vbus(otg, 1);
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} else {
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musb->is_active = 1;
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otg->default_a = 1;
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musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
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devctl |= MUSB_DEVCTL_SESSION;
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MUSB_HST_MODE(musb);
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}
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} else {
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musb->is_active = 0;
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/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
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* jumping right to B_IDLE...
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*/
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otg->default_a = 0;
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musb->xceiv->state = OTG_STATE_B_IDLE;
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devctl &= ~MUSB_DEVCTL_SESSION;
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MUSB_DEV_MODE(musb);
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}
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musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
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dev_dbg(musb->controller, "VBUS %s, devctl %02x "
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/* otg %3x conf %08x prcm %08x */ "\n",
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usb_otg_state_string(musb->xceiv->state),
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musb_readb(musb->mregs, MUSB_DEVCTL));
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}
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static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode)
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{
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u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
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devctl |= MUSB_DEVCTL_SESSION;
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musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
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return 0;
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}
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static inline void omap2430_low_level_exit(struct musb *musb)
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{
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u32 l;
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/* in any role */
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l = musb_readl(musb->mregs, OTG_FORCESTDBY);
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l |= ENABLEFORCE; /* enable MSTANDBY */
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musb_writel(musb->mregs, OTG_FORCESTDBY, l);
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}
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static inline void omap2430_low_level_init(struct musb *musb)
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{
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u32 l;
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l = musb_readl(musb->mregs, OTG_FORCESTDBY);
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l &= ~ENABLEFORCE; /* disable MSTANDBY */
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musb_writel(musb->mregs, OTG_FORCESTDBY, l);
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}
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void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
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{
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struct omap2430_glue *glue = _glue;
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if (!glue) {
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pr_err("%s: musb core is not yet initialized\n", __func__);
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return;
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}
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glue->status = status;
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if (!glue_to_musb(glue)) {
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pr_err("%s: musb core is not yet ready\n", __func__);
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return;
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}
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schedule_work(&glue->omap_musb_mailbox_work);
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}
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EXPORT_SYMBOL_GPL(omap_musb_mailbox);
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static void omap_musb_set_mailbox(struct omap2430_glue *glue)
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{
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struct musb *musb = glue_to_musb(glue);
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struct device *dev = musb->controller;
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struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
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struct omap_musb_board_data *data = pdata->board_data;
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struct usb_otg *otg = musb->xceiv->otg;
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switch (glue->status) {
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case OMAP_MUSB_ID_GROUND:
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dev_dbg(dev, "ID GND\n");
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otg->default_a = true;
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musb->xceiv->state = OTG_STATE_A_IDLE;
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musb->xceiv->last_event = USB_EVENT_ID;
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if (musb->gadget_driver) {
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pm_runtime_get_sync(dev);
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omap_control_usb_set_mode(glue->control_otghs,
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USB_MODE_HOST);
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omap2430_musb_set_vbus(musb, 1);
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}
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break;
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case OMAP_MUSB_VBUS_VALID:
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dev_dbg(dev, "VBUS Connect\n");
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otg->default_a = false;
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musb->xceiv->state = OTG_STATE_B_IDLE;
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musb->xceiv->last_event = USB_EVENT_VBUS;
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if (musb->gadget_driver)
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pm_runtime_get_sync(dev);
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omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
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break;
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case OMAP_MUSB_ID_FLOAT:
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case OMAP_MUSB_VBUS_OFF:
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dev_dbg(dev, "VBUS Disconnect\n");
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musb->xceiv->last_event = USB_EVENT_NONE;
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if (musb->gadget_driver) {
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omap2430_musb_set_vbus(musb, 0);
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pm_runtime_mark_last_busy(dev);
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pm_runtime_put_autosuspend(dev);
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}
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if (data->interface_type == MUSB_INTERFACE_UTMI)
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otg_set_vbus(musb->xceiv->otg, 0);
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omap_control_usb_set_mode(glue->control_otghs,
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USB_MODE_DISCONNECT);
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break;
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default:
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dev_dbg(dev, "ID float\n");
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}
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atomic_notifier_call_chain(&musb->xceiv->notifier,
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musb->xceiv->last_event, NULL);
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}
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static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
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{
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struct omap2430_glue *glue = container_of(mailbox_work,
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struct omap2430_glue, omap_musb_mailbox_work);
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omap_musb_set_mailbox(glue);
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}
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static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
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{
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unsigned long flags;
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irqreturn_t retval = IRQ_NONE;
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struct musb *musb = __hci;
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spin_lock_irqsave(&musb->lock, flags);
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musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
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musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
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musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
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if (musb->int_usb || musb->int_tx || musb->int_rx)
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retval = musb_interrupt(musb);
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spin_unlock_irqrestore(&musb->lock, flags);
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return retval;
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}
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static int omap2430_musb_init(struct musb *musb)
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{
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u32 l;
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int status = 0;
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struct device *dev = musb->controller;
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struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
|
|
struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
|
|
struct omap_musb_board_data *data = plat->board_data;
|
|
|
|
/* We require some kind of external transceiver, hooked
|
|
* up through ULPI. TWL4030-family PMICs include one,
|
|
* which needs a driver, drivers aren't always needed.
|
|
*/
|
|
if (dev->parent->of_node) {
|
|
musb->phy = devm_phy_get(dev->parent, "usb2-phy");
|
|
|
|
/* We can't totally remove musb->xceiv as of now because
|
|
* musb core uses xceiv.state and xceiv.otg. Once we have
|
|
* a separate state machine to handle otg, these can be moved
|
|
* out of xceiv and then we can start using the generic PHY
|
|
* framework
|
|
*/
|
|
musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
|
|
"usb-phy", 0);
|
|
} else {
|
|
musb->xceiv = devm_usb_get_phy_dev(dev, 0);
|
|
musb->phy = devm_phy_get(dev, "usb");
|
|
}
|
|
|
|
if (IS_ERR(musb->xceiv)) {
|
|
status = PTR_ERR(musb->xceiv);
|
|
|
|
if (status == -ENXIO)
|
|
return status;
|
|
|
|
pr_err("HS USB OTG: no transceiver configured\n");
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
if (IS_ERR(musb->phy)) {
|
|
pr_err("HS USB OTG: no PHY configured\n");
|
|
return PTR_ERR(musb->phy);
|
|
}
|
|
musb->isr = omap2430_musb_interrupt;
|
|
|
|
status = pm_runtime_get_sync(dev);
|
|
if (status < 0) {
|
|
dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
|
|
goto err1;
|
|
}
|
|
|
|
l = musb_readl(musb->mregs, OTG_INTERFSEL);
|
|
|
|
if (data->interface_type == MUSB_INTERFACE_UTMI) {
|
|
/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
|
|
l &= ~ULPI_12PIN; /* Disable ULPI */
|
|
l |= UTMI_8BIT; /* Enable UTMI */
|
|
} else {
|
|
l |= ULPI_12PIN;
|
|
}
|
|
|
|
musb_writel(musb->mregs, OTG_INTERFSEL, l);
|
|
|
|
pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
|
|
"sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
|
|
musb_readl(musb->mregs, OTG_REVISION),
|
|
musb_readl(musb->mregs, OTG_SYSCONFIG),
|
|
musb_readl(musb->mregs, OTG_SYSSTATUS),
|
|
musb_readl(musb->mregs, OTG_INTERFSEL),
|
|
musb_readl(musb->mregs, OTG_SIMENABLE));
|
|
|
|
setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
|
|
|
|
if (glue->status != OMAP_MUSB_UNKNOWN)
|
|
omap_musb_set_mailbox(glue);
|
|
|
|
phy_init(musb->phy);
|
|
|
|
pm_runtime_put_noidle(musb->controller);
|
|
return 0;
|
|
|
|
err1:
|
|
return status;
|
|
}
|
|
|
|
static void omap2430_musb_enable(struct musb *musb)
|
|
{
|
|
u8 devctl;
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
|
|
struct device *dev = musb->controller;
|
|
struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
|
|
struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
|
|
struct omap_musb_board_data *data = pdata->board_data;
|
|
|
|
switch (glue->status) {
|
|
|
|
case OMAP_MUSB_ID_GROUND:
|
|
omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
|
|
if (data->interface_type != MUSB_INTERFACE_UTMI)
|
|
break;
|
|
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
|
|
/* start the session */
|
|
devctl |= MUSB_DEVCTL_SESSION;
|
|
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
|
|
while (musb_readb(musb->mregs, MUSB_DEVCTL) &
|
|
MUSB_DEVCTL_BDEVICE) {
|
|
cpu_relax();
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
dev_err(dev, "configured as A device timeout");
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OMAP_MUSB_VBUS_VALID:
|
|
omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void omap2430_musb_disable(struct musb *musb)
|
|
{
|
|
struct device *dev = musb->controller;
|
|
struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
|
|
|
|
if (glue->status != OMAP_MUSB_UNKNOWN)
|
|
omap_control_usb_set_mode(glue->control_otghs,
|
|
USB_MODE_DISCONNECT);
|
|
}
|
|
|
|
static int omap2430_musb_exit(struct musb *musb)
|
|
{
|
|
del_timer_sync(&musb_idle_timer);
|
|
|
|
omap2430_low_level_exit(musb);
|
|
phy_exit(musb->phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct musb_platform_ops omap2430_ops = {
|
|
.init = omap2430_musb_init,
|
|
.exit = omap2430_musb_exit,
|
|
|
|
.set_mode = omap2430_musb_set_mode,
|
|
.try_idle = omap2430_musb_try_idle,
|
|
|
|
.set_vbus = omap2430_musb_set_vbus,
|
|
|
|
.enable = omap2430_musb_enable,
|
|
.disable = omap2430_musb_disable,
|
|
};
|
|
|
|
static u64 omap2430_dmamask = DMA_BIT_MASK(32);
|
|
|
|
static int omap2430_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource musb_resources[3];
|
|
struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
|
struct omap_musb_board_data *data;
|
|
struct platform_device *musb;
|
|
struct omap2430_glue *glue;
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct musb_hdrc_config *config;
|
|
int ret = -ENOMEM;
|
|
|
|
glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
|
|
if (!glue) {
|
|
dev_err(&pdev->dev, "failed to allocate glue context\n");
|
|
goto err0;
|
|
}
|
|
|
|
musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
|
|
if (!musb) {
|
|
dev_err(&pdev->dev, "failed to allocate musb device\n");
|
|
goto err0;
|
|
}
|
|
|
|
musb->dev.parent = &pdev->dev;
|
|
musb->dev.dma_mask = &omap2430_dmamask;
|
|
musb->dev.coherent_dma_mask = omap2430_dmamask;
|
|
|
|
glue->dev = &pdev->dev;
|
|
glue->musb = musb;
|
|
glue->status = OMAP_MUSB_UNKNOWN;
|
|
glue->control_otghs = ERR_PTR(-ENODEV);
|
|
|
|
if (np) {
|
|
struct device_node *control_node;
|
|
struct platform_device *control_pdev;
|
|
|
|
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev,
|
|
"failed to allocate musb platform data\n");
|
|
goto err2;
|
|
}
|
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
|
|
if (!data) {
|
|
dev_err(&pdev->dev,
|
|
"failed to allocate musb board data\n");
|
|
goto err2;
|
|
}
|
|
|
|
config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
|
|
if (!config) {
|
|
dev_err(&pdev->dev,
|
|
"failed to allocate musb hdrc config\n");
|
|
goto err2;
|
|
}
|
|
|
|
of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
|
|
of_property_read_u32(np, "interface-type",
|
|
(u32 *)&data->interface_type);
|
|
of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
|
|
of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
|
|
of_property_read_u32(np, "power", (u32 *)&pdata->power);
|
|
config->multipoint = of_property_read_bool(np, "multipoint");
|
|
|
|
pdata->board_data = data;
|
|
pdata->config = config;
|
|
|
|
control_node = of_parse_phandle(np, "ctrl-module", 0);
|
|
if (control_node) {
|
|
control_pdev = of_find_device_by_node(control_node);
|
|
if (!control_pdev) {
|
|
dev_err(&pdev->dev, "Failed to get control device\n");
|
|
ret = -EINVAL;
|
|
goto err2;
|
|
}
|
|
glue->control_otghs = &control_pdev->dev;
|
|
}
|
|
}
|
|
pdata->platform_ops = &omap2430_ops;
|
|
|
|
platform_set_drvdata(pdev, glue);
|
|
|
|
/*
|
|
* REVISIT if we ever have two instances of the wrapper, we will be
|
|
* in big trouble
|
|
*/
|
|
_glue = glue;
|
|
|
|
INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
|
|
|
|
memset(musb_resources, 0x00, sizeof(*musb_resources) *
|
|
ARRAY_SIZE(musb_resources));
|
|
|
|
musb_resources[0].name = pdev->resource[0].name;
|
|
musb_resources[0].start = pdev->resource[0].start;
|
|
musb_resources[0].end = pdev->resource[0].end;
|
|
musb_resources[0].flags = pdev->resource[0].flags;
|
|
|
|
musb_resources[1].name = pdev->resource[1].name;
|
|
musb_resources[1].start = pdev->resource[1].start;
|
|
musb_resources[1].end = pdev->resource[1].end;
|
|
musb_resources[1].flags = pdev->resource[1].flags;
|
|
|
|
musb_resources[2].name = pdev->resource[2].name;
|
|
musb_resources[2].start = pdev->resource[2].start;
|
|
musb_resources[2].end = pdev->resource[2].end;
|
|
musb_resources[2].flags = pdev->resource[2].flags;
|
|
|
|
ret = platform_device_add_resources(musb, musb_resources,
|
|
ARRAY_SIZE(musb_resources));
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to add resources\n");
|
|
goto err2;
|
|
}
|
|
|
|
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to add platform_data\n");
|
|
goto err2;
|
|
}
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
ret = platform_device_add(musb);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register musb device\n");
|
|
goto err2;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
platform_device_put(musb);
|
|
|
|
err0:
|
|
return ret;
|
|
}
|
|
|
|
static int omap2430_remove(struct platform_device *pdev)
|
|
{
|
|
struct omap2430_glue *glue = platform_get_drvdata(pdev);
|
|
|
|
cancel_work_sync(&glue->omap_musb_mailbox_work);
|
|
platform_device_unregister(glue->musb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int omap2430_runtime_suspend(struct device *dev)
|
|
{
|
|
struct omap2430_glue *glue = dev_get_drvdata(dev);
|
|
struct musb *musb = glue_to_musb(glue);
|
|
|
|
if (musb) {
|
|
musb->context.otg_interfsel = musb_readl(musb->mregs,
|
|
OTG_INTERFSEL);
|
|
|
|
omap2430_low_level_exit(musb);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int omap2430_runtime_resume(struct device *dev)
|
|
{
|
|
struct omap2430_glue *glue = dev_get_drvdata(dev);
|
|
struct musb *musb = glue_to_musb(glue);
|
|
|
|
if (musb) {
|
|
omap2430_low_level_init(musb);
|
|
musb_writel(musb->mregs, OTG_INTERFSEL,
|
|
musb->context.otg_interfsel);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dev_pm_ops omap2430_pm_ops = {
|
|
.runtime_suspend = omap2430_runtime_suspend,
|
|
.runtime_resume = omap2430_runtime_resume,
|
|
};
|
|
|
|
#define DEV_PM_OPS (&omap2430_pm_ops)
|
|
#else
|
|
#define DEV_PM_OPS NULL
|
|
#endif
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id omap2430_id_table[] = {
|
|
{
|
|
.compatible = "ti,omap4-musb"
|
|
},
|
|
{
|
|
.compatible = "ti,omap3-musb"
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, omap2430_id_table);
|
|
#endif
|
|
|
|
static struct platform_driver omap2430_driver = {
|
|
.probe = omap2430_probe,
|
|
.remove = omap2430_remove,
|
|
.driver = {
|
|
.name = "musb-omap2430",
|
|
.pm = DEV_PM_OPS,
|
|
.of_match_table = of_match_ptr(omap2430_id_table),
|
|
},
|
|
};
|
|
|
|
MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
|
|
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
static int __init omap2430_init(void)
|
|
{
|
|
return platform_driver_register(&omap2430_driver);
|
|
}
|
|
subsys_initcall(omap2430_init);
|
|
|
|
static void __exit omap2430_exit(void)
|
|
{
|
|
platform_driver_unregister(&omap2430_driver);
|
|
}
|
|
module_exit(omap2430_exit);
|