2009-02-06 19:02:35 +07:00
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/*
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* NOP USB transceiver for all USB transceiver which are either built-in
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* into USB IP or which are mostly autonomous.
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*
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* Copyright (C) 2009 Texas Instruments Inc
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* Author: Ajay Kumar Gupta <ajay.gupta@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Current status:
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2009-04-01 02:28:31 +07:00
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* This provides a "nop" transceiver for PHYs which are
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* autonomous such as isp1504, isp1707, etc.
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2009-02-06 19:02:35 +07:00
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
|
2014-12-07 04:05:15 +07:00
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#include <linux/usb/gadget.h>
|
2009-02-06 19:02:35 +07:00
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#include <linux/usb/otg.h>
|
2014-04-17 03:28:32 +07:00
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#include <linux/usb/usb_phy_generic.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 15:04:11 +07:00
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#include <linux/slab.h>
|
2013-03-12 18:24:21 +07:00
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#include <linux/clk.h>
|
2013-03-12 18:24:22 +07:00
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#include <linux/regulator/consumer.h>
|
2013-03-12 18:24:25 +07:00
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#include <linux/of.h>
|
2013-09-24 15:53:48 +07:00
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#include <linux/of_gpio.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
|
2009-02-06 19:02:35 +07:00
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|
2013-07-30 22:20:06 +07:00
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#include "phy-generic.h"
|
2009-02-06 19:02:35 +07:00
|
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|
2014-12-07 04:05:15 +07:00
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#define VBUS_IRQ_FLAGS \
|
2015-01-30 23:22:46 +07:00
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(IRQF_SHARED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | \
|
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IRQF_ONESHOT)
|
2014-12-07 04:05:15 +07:00
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|
2014-04-17 04:16:33 +07:00
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struct platform_device *usb_phy_generic_register(void)
|
2009-02-06 19:02:35 +07:00
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|
{
|
2014-04-17 04:16:33 +07:00
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return platform_device_register_simple("usb_phy_generic",
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|
|
PLATFORM_DEVID_AUTO, NULL, 0);
|
2009-02-06 19:02:35 +07:00
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}
|
2014-04-17 03:20:44 +07:00
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EXPORT_SYMBOL_GPL(usb_phy_generic_register);
|
2009-02-06 19:02:35 +07:00
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|
2014-04-17 04:16:33 +07:00
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void usb_phy_generic_unregister(struct platform_device *pdev)
|
2009-02-06 19:02:35 +07:00
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|
|
{
|
2014-04-17 04:16:33 +07:00
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|
|
platform_device_unregister(pdev);
|
2009-02-06 19:02:35 +07:00
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}
|
2014-04-17 03:20:44 +07:00
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EXPORT_SYMBOL_GPL(usb_phy_generic_unregister);
|
2009-02-06 19:02:35 +07:00
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|
2012-02-13 18:24:02 +07:00
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static int nop_set_suspend(struct usb_phy *x, int suspend)
|
2009-02-06 19:02:35 +07:00
|
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|
{
|
2016-10-31 09:18:20 +07:00
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struct usb_phy_generic *nop = dev_get_drvdata(x->dev);
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if (!IS_ERR(nop->clk)) {
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if (suspend)
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clk_disable_unprepare(nop->clk);
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else
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clk_prepare_enable(nop->clk);
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}
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|
2009-02-06 19:02:35 +07:00
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return 0;
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}
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|
2015-02-04 04:18:17 +07:00
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static void nop_reset(struct usb_phy_generic *nop)
|
2013-09-24 15:53:48 +07:00
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|
{
|
2015-01-28 22:19:17 +07:00
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|
|
if (!nop->gpiod_reset)
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return;
|
2013-09-24 15:53:48 +07:00
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|
2015-02-04 04:18:17 +07:00
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gpiod_set_value(nop->gpiod_reset, 1);
|
2015-01-28 22:19:17 +07:00
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usleep_range(10000, 20000);
|
2015-02-04 04:18:17 +07:00
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|
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gpiod_set_value(nop->gpiod_reset, 0);
|
2013-09-24 15:53:48 +07:00
|
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}
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|
2014-12-07 04:05:15 +07:00
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/* interface to regulator framework */
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static void nop_set_vbus_draw(struct usb_phy_generic *nop, unsigned mA)
|
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|
|
{
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struct regulator *vbus_draw = nop->vbus_draw;
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int enabled;
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int ret;
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if (!vbus_draw)
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return;
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enabled = nop->vbus_draw_enabled;
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if (mA) {
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regulator_set_current_limit(vbus_draw, 0, 1000 * mA);
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if (!enabled) {
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ret = regulator_enable(vbus_draw);
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if (ret < 0)
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return;
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nop->vbus_draw_enabled = 1;
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}
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|
} else {
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|
if (enabled) {
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ret = regulator_disable(vbus_draw);
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|
if (ret < 0)
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|
return;
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nop->vbus_draw_enabled = 0;
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}
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}
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nop->mA = mA;
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}
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static irqreturn_t nop_gpio_vbus_thread(int irq, void *data)
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|
|
{
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|
struct usb_phy_generic *nop = data;
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|
struct usb_otg *otg = nop->phy.otg;
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|
int vbus, status;
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vbus = gpiod_get_value(nop->gpiod_vbus);
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if ((vbus ^ nop->vbus) == 0)
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|
return IRQ_HANDLED;
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nop->vbus = vbus;
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if (vbus) {
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status = USB_EVENT_VBUS;
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otg->state = OTG_STATE_B_PERIPHERAL;
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|
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nop->phy.last_event = status;
|
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|
|
/* drawing a "unit load" is *always* OK, except for OTG */
|
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nop_set_vbus_draw(nop, 100);
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atomic_notifier_call_chain(&nop->phy.notifier, status,
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otg->gadget);
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|
} else {
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nop_set_vbus_draw(nop, 0);
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|
status = USB_EVENT_NONE;
|
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|
|
otg->state = OTG_STATE_B_IDLE;
|
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|
|
nop->phy.last_event = status;
|
|
|
|
|
|
|
|
atomic_notifier_call_chain(&nop->phy.notifier, status,
|
|
|
|
otg->gadget);
|
|
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
int usb_gen_phy_init(struct usb_phy *phy)
|
2013-03-12 18:24:21 +07:00
|
|
|
{
|
2014-04-17 03:20:44 +07:00
|
|
|
struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
|
2016-08-23 08:45:36 +07:00
|
|
|
int ret;
|
2013-03-12 18:24:21 +07:00
|
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|
|
2013-03-12 18:24:22 +07:00
|
|
|
if (!IS_ERR(nop->vcc)) {
|
|
|
|
if (regulator_enable(nop->vcc))
|
|
|
|
dev_err(phy->dev, "Failed to enable power\n");
|
|
|
|
}
|
|
|
|
|
2016-08-23 08:45:36 +07:00
|
|
|
if (!IS_ERR(nop->clk)) {
|
|
|
|
ret = clk_prepare_enable(nop->clk);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
2013-03-12 18:24:21 +07:00
|
|
|
|
2015-02-04 04:18:17 +07:00
|
|
|
nop_reset(nop);
|
2013-03-12 18:24:23 +07:00
|
|
|
|
2013-03-12 18:24:21 +07:00
|
|
|
return 0;
|
|
|
|
}
|
2013-07-30 22:20:06 +07:00
|
|
|
EXPORT_SYMBOL_GPL(usb_gen_phy_init);
|
2013-03-12 18:24:21 +07:00
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
void usb_gen_phy_shutdown(struct usb_phy *phy)
|
2013-03-12 18:24:21 +07:00
|
|
|
{
|
2014-04-17 03:20:44 +07:00
|
|
|
struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
|
2013-03-12 18:24:21 +07:00
|
|
|
|
2015-02-04 04:18:17 +07:00
|
|
|
gpiod_set_value(nop->gpiod_reset, 1);
|
2013-03-12 18:24:23 +07:00
|
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|
|
2013-03-12 18:24:21 +07:00
|
|
|
if (!IS_ERR(nop->clk))
|
2013-08-11 21:26:04 +07:00
|
|
|
clk_disable_unprepare(nop->clk);
|
2013-03-12 18:24:22 +07:00
|
|
|
|
|
|
|
if (!IS_ERR(nop->vcc)) {
|
|
|
|
if (regulator_disable(nop->vcc))
|
|
|
|
dev_err(phy->dev, "Failed to disable power\n");
|
|
|
|
}
|
2013-03-12 18:24:21 +07:00
|
|
|
}
|
2013-07-30 22:20:06 +07:00
|
|
|
EXPORT_SYMBOL_GPL(usb_gen_phy_shutdown);
|
2013-03-12 18:24:21 +07:00
|
|
|
|
2012-02-13 18:24:10 +07:00
|
|
|
static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2012-02-13 18:24:10 +07:00
|
|
|
if (!otg)
|
2009-02-06 19:02:35 +07:00
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if (!gadget) {
|
2012-02-13 18:24:10 +07:00
|
|
|
otg->gadget = NULL;
|
2009-02-06 19:02:35 +07:00
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2012-02-13 18:24:10 +07:00
|
|
|
otg->gadget = gadget;
|
2016-02-28 22:34:16 +07:00
|
|
|
if (otg->state == OTG_STATE_B_PERIPHERAL)
|
2016-07-09 03:09:07 +07:00
|
|
|
atomic_notifier_call_chain(&otg->usb_phy->notifier,
|
|
|
|
USB_EVENT_VBUS, otg->gadget);
|
2016-02-28 22:34:16 +07:00
|
|
|
else
|
|
|
|
otg->state = OTG_STATE_B_IDLE;
|
2009-02-06 19:02:35 +07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-02-13 18:24:10 +07:00
|
|
|
static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2012-02-13 18:24:10 +07:00
|
|
|
if (!otg)
|
2009-02-06 19:02:35 +07:00
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if (!host) {
|
2012-02-13 18:24:10 +07:00
|
|
|
otg->host = NULL;
|
2009-02-06 19:02:35 +07:00
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2012-02-13 18:24:10 +07:00
|
|
|
otg->host = host;
|
2009-02-06 19:02:35 +07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
|
|
|
|
struct usb_phy_generic_platform_data *pdata)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2013-10-24 21:45:29 +07:00
|
|
|
enum usb_phy_type type = USB_PHY_TYPE_USB2;
|
2014-12-07 04:05:13 +07:00
|
|
|
int err = 0;
|
2009-02-06 19:02:35 +07:00
|
|
|
|
2013-10-24 21:45:29 +07:00
|
|
|
u32 clk_rate = 0;
|
|
|
|
bool needs_vcc = false;
|
|
|
|
|
|
|
|
if (dev->of_node) {
|
|
|
|
struct device_node *node = dev->of_node;
|
|
|
|
|
|
|
|
if (of_property_read_u32(node, "clock-frequency", &clk_rate))
|
|
|
|
clk_rate = 0;
|
|
|
|
|
|
|
|
needs_vcc = of_property_read_bool(node, "vcc-supply");
|
2015-07-06 16:09:49 +07:00
|
|
|
nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
|
|
|
|
GPIOD_ASIS);
|
2015-01-30 23:22:45 +07:00
|
|
|
err = PTR_ERR_OR_ZERO(nop->gpiod_reset);
|
2014-12-07 04:05:15 +07:00
|
|
|
if (!err) {
|
2015-01-15 09:45:12 +07:00
|
|
|
nop->gpiod_vbus = devm_gpiod_get_optional(dev,
|
2015-07-06 16:09:49 +07:00
|
|
|
"vbus-detect",
|
|
|
|
GPIOD_ASIS);
|
2015-01-30 23:22:45 +07:00
|
|
|
err = PTR_ERR_OR_ZERO(nop->gpiod_vbus);
|
2014-12-07 04:05:15 +07:00
|
|
|
}
|
2013-10-24 21:45:29 +07:00
|
|
|
} else if (pdata) {
|
|
|
|
type = pdata->type;
|
|
|
|
clk_rate = pdata->clk_rate;
|
|
|
|
needs_vcc = pdata->needs_vcc;
|
2014-12-07 04:05:15 +07:00
|
|
|
if (gpio_is_valid(pdata->gpio_reset)) {
|
2015-08-13 17:28:42 +07:00
|
|
|
err = devm_gpio_request_one(dev, pdata->gpio_reset,
|
|
|
|
GPIOF_ACTIVE_LOW,
|
2014-12-07 04:05:13 +07:00
|
|
|
dev_name(dev));
|
|
|
|
if (!err)
|
|
|
|
nop->gpiod_reset =
|
|
|
|
gpio_to_desc(pdata->gpio_reset);
|
|
|
|
}
|
2014-12-07 04:05:15 +07:00
|
|
|
nop->gpiod_vbus = pdata->gpiod_vbus;
|
2014-12-07 04:05:13 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
if (err == -EPROBE_DEFER)
|
|
|
|
return -EPROBE_DEFER;
|
|
|
|
if (err) {
|
2015-01-30 23:22:45 +07:00
|
|
|
dev_err(dev, "Error requesting RESET or VBUS GPIO\n");
|
2014-12-07 04:05:13 +07:00
|
|
|
return err;
|
2013-10-24 21:45:29 +07:00
|
|
|
}
|
2015-01-30 23:22:45 +07:00
|
|
|
if (nop->gpiod_reset)
|
|
|
|
gpiod_direction_output(nop->gpiod_reset, 1);
|
2013-10-24 21:45:29 +07:00
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
nop->phy.otg = devm_kzalloc(dev, sizeof(*nop->phy.otg),
|
|
|
|
GFP_KERNEL);
|
2013-03-12 18:24:20 +07:00
|
|
|
if (!nop->phy.otg)
|
2012-02-13 18:24:10 +07:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
nop->clk = devm_clk_get(dev, "main_clk");
|
2013-03-12 18:24:21 +07:00
|
|
|
if (IS_ERR(nop->clk)) {
|
2013-07-30 22:20:06 +07:00
|
|
|
dev_dbg(dev, "Can't get phy clock: %ld\n",
|
2013-03-12 18:24:21 +07:00
|
|
|
PTR_ERR(nop->clk));
|
|
|
|
}
|
|
|
|
|
2013-03-12 18:24:25 +07:00
|
|
|
if (!IS_ERR(nop->clk) && clk_rate) {
|
|
|
|
err = clk_set_rate(nop->clk, clk_rate);
|
2013-03-12 18:24:21 +07:00
|
|
|
if (err) {
|
2013-07-30 22:20:06 +07:00
|
|
|
dev_err(dev, "Error setting clock rate\n");
|
2013-03-12 18:24:21 +07:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
nop->vcc = devm_regulator_get(dev, "vcc");
|
2013-03-12 18:24:22 +07:00
|
|
|
if (IS_ERR(nop->vcc)) {
|
2013-07-30 22:20:06 +07:00
|
|
|
dev_dbg(dev, "Error getting vcc regulator: %ld\n",
|
2013-03-12 18:24:22 +07:00
|
|
|
PTR_ERR(nop->vcc));
|
2013-03-12 18:24:26 +07:00
|
|
|
if (needs_vcc)
|
|
|
|
return -EPROBE_DEFER;
|
2013-03-12 18:24:22 +07:00
|
|
|
}
|
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
nop->dev = dev;
|
2012-02-13 18:24:10 +07:00
|
|
|
nop->phy.dev = nop->dev;
|
|
|
|
nop->phy.label = "nop-xceiv";
|
|
|
|
nop->phy.set_suspend = nop_set_suspend;
|
2013-03-12 18:24:24 +07:00
|
|
|
nop->phy.type = type;
|
2012-02-13 18:24:10 +07:00
|
|
|
|
2014-10-31 00:41:13 +07:00
|
|
|
nop->phy.otg->state = OTG_STATE_UNDEFINED;
|
2014-10-31 00:41:14 +07:00
|
|
|
nop->phy.otg->usb_phy = &nop->phy;
|
2012-02-13 18:24:10 +07:00
|
|
|
nop->phy.otg->set_host = nop_set_host;
|
|
|
|
nop->phy.otg->set_peripheral = nop_set_peripheral;
|
|
|
|
|
2013-07-30 22:20:06 +07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(usb_phy_gen_create_phy);
|
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
static int usb_phy_generic_probe(struct platform_device *pdev)
|
2013-07-30 22:20:06 +07:00
|
|
|
{
|
|
|
|
struct device *dev = &pdev->dev;
|
2014-04-17 03:20:44 +07:00
|
|
|
struct usb_phy_generic *nop;
|
2013-07-30 22:20:06 +07:00
|
|
|
int err;
|
2013-09-24 15:53:48 +07:00
|
|
|
|
|
|
|
nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL);
|
|
|
|
if (!nop)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-10-24 21:45:29 +07:00
|
|
|
err = usb_phy_gen_create_phy(dev, nop, dev_get_platdata(&pdev->dev));
|
2013-07-30 22:20:06 +07:00
|
|
|
if (err)
|
|
|
|
return err;
|
2014-12-07 04:05:15 +07:00
|
|
|
if (nop->gpiod_vbus) {
|
|
|
|
err = devm_request_threaded_irq(&pdev->dev,
|
|
|
|
gpiod_to_irq(nop->gpiod_vbus),
|
|
|
|
NULL, nop_gpio_vbus_thread,
|
|
|
|
VBUS_IRQ_FLAGS, "vbus_detect",
|
|
|
|
nop);
|
|
|
|
if (err) {
|
|
|
|
dev_err(&pdev->dev, "can't request irq %i, err: %d\n",
|
|
|
|
gpiod_to_irq(nop->gpiod_vbus), err);
|
|
|
|
return err;
|
|
|
|
}
|
usb: phy: generic: cope with initial state
In the gpio based case, the status of the phy is known at start by
reading the VBus gpio.
Actually, this is a fix, as this initial state, when not set up,
prevents a gadget to answer to the enumeration phase, as there is no
notification in this case (the VBus is already high when kernel boots)
so no interrupt is triggered, and the flow is :
- gadget initializes
- gadget gets its phy-generic with a xxx_get_phy_xxx() call type
- gadget does a "set_peripheral()" call type
=> here if the otg->state is correctly filled, the proper vbus
handling will be called, and the gadget will be aware it should
answer enumeration and go forth
Without this fix, the USB cable must be removed and replugged for any
gadget relying on phy-generic and its gpio vbus handling to work.
The problem was seen on a pxa27x architecture based board on a
devicetree build.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-07-09 03:09:06 +07:00
|
|
|
nop->phy.otg->state = gpiod_get_value(nop->gpiod_vbus) ?
|
|
|
|
OTG_STATE_B_PERIPHERAL : OTG_STATE_B_IDLE;
|
2014-12-07 04:05:15 +07:00
|
|
|
}
|
2013-07-30 22:20:06 +07:00
|
|
|
|
|
|
|
nop->phy.init = usb_gen_phy_init;
|
|
|
|
nop->phy.shutdown = usb_gen_phy_shutdown;
|
|
|
|
|
2013-03-12 18:24:24 +07:00
|
|
|
err = usb_add_phy_dev(&nop->phy);
|
2009-02-06 19:02:35 +07:00
|
|
|
if (err) {
|
|
|
|
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
|
|
|
|
err);
|
2013-08-11 21:26:04 +07:00
|
|
|
return err;
|
2009-02-06 19:02:35 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
platform_set_drvdata(pdev, nop);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
static int usb_phy_generic_remove(struct platform_device *pdev)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2014-04-17 03:20:44 +07:00
|
|
|
struct usb_phy_generic *nop = platform_get_drvdata(pdev);
|
2009-02-06 19:02:35 +07:00
|
|
|
|
2012-06-22 18:32:46 +07:00
|
|
|
usb_remove_phy(&nop->phy);
|
2009-02-06 19:02:35 +07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-03-12 18:24:25 +07:00
|
|
|
static const struct of_device_id nop_xceiv_dt_ids[] = {
|
|
|
|
{ .compatible = "usb-nop-xceiv" },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids);
|
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
static struct platform_driver usb_phy_generic_driver = {
|
|
|
|
.probe = usb_phy_generic_probe,
|
|
|
|
.remove = usb_phy_generic_remove,
|
2009-02-06 19:02:35 +07:00
|
|
|
.driver = {
|
2014-04-17 03:20:44 +07:00
|
|
|
.name = "usb_phy_generic",
|
2013-05-21 18:47:22 +07:00
|
|
|
.of_match_table = nop_xceiv_dt_ids,
|
2009-02-06 19:02:35 +07:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
static int __init usb_phy_generic_init(void)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2014-04-17 03:20:44 +07:00
|
|
|
return platform_driver_register(&usb_phy_generic_driver);
|
2009-02-06 19:02:35 +07:00
|
|
|
}
|
2014-04-17 03:20:44 +07:00
|
|
|
subsys_initcall(usb_phy_generic_init);
|
2009-02-06 19:02:35 +07:00
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
static void __exit usb_phy_generic_exit(void)
|
2009-02-06 19:02:35 +07:00
|
|
|
{
|
2014-04-17 03:20:44 +07:00
|
|
|
platform_driver_unregister(&usb_phy_generic_driver);
|
2009-02-06 19:02:35 +07:00
|
|
|
}
|
2014-04-17 03:20:44 +07:00
|
|
|
module_exit(usb_phy_generic_exit);
|
2009-02-06 19:02:35 +07:00
|
|
|
|
2014-04-17 03:20:44 +07:00
|
|
|
MODULE_ALIAS("platform:usb_phy_generic");
|
2009-02-06 19:02:35 +07:00
|
|
|
MODULE_AUTHOR("Texas Instruments Inc");
|
|
|
|
MODULE_DESCRIPTION("NOP USB Transceiver driver");
|
|
|
|
MODULE_LICENSE("GPL");
|