summaryrefslogtreecommitdiff
path: root/drivers/usb/phy
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-24 19:18:40 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-24 19:18:40 +0400
commit5328f35b1584a9849ffe46afa42018946aa43851 (patch)
treef939d0577ae13ed22069ac4188ce21bacc7a3af5 /drivers/usb/phy
parente3967e7b28de70d28313cc93d831d8525083097f (diff)
parent80d7d8a768cda6e8a08ab805a977d08741011da1 (diff)
downloadlinux-5328f35b1584a9849ffe46afa42018946aa43851.tar.xz
Merge tag 'usb-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes: usb: patches for v3.13 Final conversions to configfs for mass storage, acm_ms, and multi gadgets. MUSB should now work out of the box on AM335x-based boards (beagle bone white and black) with DMA thanks to Sebastian's work. We can now enable VERBOSE_DEBUG on builds of drivers/usb/gadget/ by selecting CONFIG_USB_GADGET_VERBOSE. s3c-hsotg got quite a few non-critical fixes but also learned a few new tricks (isochronous transfers, multi count support). The Marvel USB3 Controller driver got a memory leak fix. devm_usb_get_phy() learned not to return NULL, ever. Other than these patches, we have the usual set of cleanups ranging from removal of unnecessary *_set_drvdata() to using SIMPLE_DEV_PM_OPS. Signed-of-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/phy')
-rw-r--r--drivers/usb/phy/Kconfig13
-rw-r--r--drivers/usb/phy/Makefile1
-rw-r--r--drivers/usb/phy/phy-am335x-control.c44
-rw-r--r--drivers/usb/phy/phy-am335x.c44
-rw-r--r--drivers/usb/phy/phy-fsl-usb.c96
-rw-r--r--drivers/usb/phy/phy-fsl-usb.h4
-rw-r--r--drivers/usb/phy/phy-fsm-usb.c72
-rw-r--r--drivers/usb/phy/phy-fsm-usb.h179
-rw-r--r--drivers/usb/phy/phy-generic.c108
-rw-r--r--drivers/usb/phy/phy-generic.h7
-rw-r--r--drivers/usb/phy/phy-rcar-gen2-usb.c248
-rw-r--r--drivers/usb/phy/phy-tegra-usb.c2
-rw-r--r--drivers/usb/phy/phy-twl6030-usb.c1
-rw-r--r--drivers/usb/phy/phy.c2
14 files changed, 666 insertions, 155 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 64b8bef1919e..08e2f39027ec 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -194,6 +194,19 @@ config USB_RCAR_PHY
To compile this driver as a module, choose M here: the
module will be called phy-rcar-usb.
+config USB_RCAR_GEN2_PHY
+ tristate "Renesas R-Car Gen2 USB PHY support"
+ depends on ARCH_R8A7790 || ARCH_R8A7791 || COMPILE_TEST
+ select USB_PHY
+ help
+ Say Y here to add support for the Renesas R-Car Gen2 USB PHY driver.
+ It is typically used to control internal USB PHY for USBHS,
+ and to configure shared USB channels 0 and 2.
+ This driver supports R8A7790 and R8A7791.
+
+ To compile this driver as a module, choose M here: the
+ module will be called phy-rcar-gen2-usb.
+
config USB_ULPI
bool "Generic ULPI Transceiver Driver"
depends on ARM
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 9c3736109c2c..022c1da7fb78 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -27,5 +27,6 @@ obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
obj-$(CONFIG_USB_RCAR_PHY) += phy-rcar-usb.o
+obj-$(CONFIG_USB_RCAR_GEN2_PHY) += phy-rcar-gen2-usb.o
obj-$(CONFIG_USB_ULPI) += phy-ulpi.o
obj-$(CONFIG_USB_ULPI_VIEWPORT) += phy-ulpi-viewport.o
diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c
index 22cf07d62e4c..634f49acd20e 100644
--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -26,6 +26,41 @@ struct am335x_control_usb {
#define USBPHY_OTGVDET_EN (1 << 19)
#define USBPHY_OTGSESSEND_EN (1 << 20)
+#define AM335X_PHY0_WK_EN (1 << 0)
+#define AM335X_PHY1_WK_EN (1 << 8)
+
+static void am335x_phy_wkup(struct phy_control *phy_ctrl, u32 id, bool on)
+{
+ struct am335x_control_usb *usb_ctrl;
+ u32 val;
+ u32 reg;
+
+ usb_ctrl = container_of(phy_ctrl, struct am335x_control_usb, phy_ctrl);
+
+ switch (id) {
+ case 0:
+ reg = AM335X_PHY0_WK_EN;
+ break;
+ case 1:
+ reg = AM335X_PHY1_WK_EN;
+ break;
+ default:
+ WARN_ON(1);
+ return;
+ }
+
+ spin_lock(&usb_ctrl->lock);
+ val = readl(usb_ctrl->wkup);
+
+ if (on)
+ val |= reg;
+ else
+ val &= ~reg;
+
+ writel(val, usb_ctrl->wkup);
+ spin_unlock(&usb_ctrl->lock);
+}
+
static void am335x_phy_power(struct phy_control *phy_ctrl, u32 id, bool on)
{
struct am335x_control_usb *usb_ctrl;
@@ -59,6 +94,7 @@ static void am335x_phy_power(struct phy_control *phy_ctrl, u32 id, bool on)
static const struct phy_control ctrl_am335x = {
.phy_power = am335x_phy_power,
+ .phy_wkup = am335x_phy_wkup,
};
static const struct of_device_id omap_control_usb_id_table[] = {
@@ -117,6 +153,12 @@ static int am335x_control_usb_probe(struct platform_device *pdev)
ctrl_usb->phy_reg = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ctrl_usb->phy_reg))
return PTR_ERR(ctrl_usb->phy_reg);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wakeup");
+ ctrl_usb->wkup = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(ctrl_usb->wkup))
+ return PTR_ERR(ctrl_usb->wkup);
+
spin_lock_init(&ctrl_usb->lock);
ctrl_usb->phy_ctrl = *phy_ctrl;
@@ -129,7 +171,7 @@ static struct platform_driver am335x_control_driver = {
.driver = {
.name = "am335x-control-usb",
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(omap_control_usb_id_table),
+ .of_match_table = omap_control_usb_id_table,
},
};
diff --git a/drivers/usb/phy/phy-am335x.c b/drivers/usb/phy/phy-am335x.c
index c4d614d1f173..6370e50649d7 100644
--- a/drivers/usb/phy/phy-am335x.c
+++ b/drivers/usb/phy/phy-am335x.c
@@ -53,21 +53,20 @@ static int am335x_phy_probe(struct platform_device *pdev)
}
ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen,
- USB_PHY_TYPE_USB2, 0, false, false);
+ USB_PHY_TYPE_USB2, 0, false);
if (ret)
return ret;
ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
if (ret)
- goto err_add;
+ return ret;
am_phy->usb_phy_gen.phy.init = am335x_init;
am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;
platform_set_drvdata(pdev, am_phy);
+
return 0;
-err_add:
- usb_phy_gen_cleanup_phy(&am_phy->usb_phy_gen);
return ret;
}
@@ -79,6 +78,40 @@ static int am335x_phy_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_RUNTIME
+
+static int am335x_phy_runtime_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct am335x_phy *am_phy = platform_get_drvdata(pdev);
+
+ if (device_may_wakeup(dev))
+ phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true);
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false);
+ return 0;
+}
+
+static int am335x_phy_runtime_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct am335x_phy *am_phy = platform_get_drvdata(pdev);
+
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true);
+ if (device_may_wakeup(dev))
+ phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false);
+ return 0;
+}
+
+static const struct dev_pm_ops am335x_pm_ops = {
+ SET_RUNTIME_PM_OPS(am335x_phy_runtime_suspend,
+ am335x_phy_runtime_resume, NULL)
+};
+
+#define DEV_PM_OPS (&am335x_pm_ops)
+#else
+#define DEV_PM_OPS NULL
+#endif
+
static const struct of_device_id am335x_phy_ids[] = {
{ .compatible = "ti,am335x-usb-phy" },
{ }
@@ -91,7 +124,8 @@ static struct platform_driver am335x_phy_driver = {
.driver = {
.name = "am335x-phy-driver",
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(am335x_phy_ids),
+ .pm = DEV_PM_OPS,
+ .of_match_table = am335x_phy_ids,
},
};
diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index fa7c9f9628b5..7f3c73b967ce 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -134,7 +134,7 @@ int write_ulpi(u8 addr, u8 data)
/* Operations that will be called from OTG Finite State Machine */
/* Charge vbus for vbus pulsing in SRP */
-void fsl_otg_chrg_vbus(int on)
+void fsl_otg_chrg_vbus(struct otg_fsm *fsm, int on)
{
u32 tmp;
@@ -170,7 +170,7 @@ void fsl_otg_dischrg_vbus(int on)
}
/* A-device driver vbus, controlled through PP bit in PORTSC */
-void fsl_otg_drv_vbus(int on)
+void fsl_otg_drv_vbus(struct otg_fsm *fsm, int on)
{
u32 tmp;
@@ -188,7 +188,7 @@ void fsl_otg_drv_vbus(int on)
* Pull-up D+, signalling connect by periperal. Also used in
* data-line pulsing in SRP
*/
-void fsl_otg_loc_conn(int on)
+void fsl_otg_loc_conn(struct otg_fsm *fsm, int on)
{
u32 tmp;
@@ -207,7 +207,7 @@ void fsl_otg_loc_conn(int on)
* port. In host mode, controller will automatically send SOF.
* Suspend will block the data on the port.
*/
-void fsl_otg_loc_sof(int on)
+void fsl_otg_loc_sof(struct otg_fsm *fsm, int on)
{
u32 tmp;
@@ -222,7 +222,7 @@ void fsl_otg_loc_sof(int on)
}
/* Start SRP pulsing by data-line pulsing, followed with v-bus pulsing. */
-void fsl_otg_start_pulse(void)
+void fsl_otg_start_pulse(struct otg_fsm *fsm)
{
u32 tmp;
@@ -235,7 +235,7 @@ void fsl_otg_start_pulse(void)
fsl_otg_loc_conn(1);
#endif
- fsl_otg_add_timer(b_data_pulse_tmr);
+ fsl_otg_add_timer(fsm, b_data_pulse_tmr);
}
void b_data_pulse_end(unsigned long foo)
@@ -252,14 +252,14 @@ void b_data_pulse_end(unsigned long foo)
void fsl_otg_pulse_vbus(void)
{
srp_wait_done = 0;
- fsl_otg_chrg_vbus(1);
+ fsl_otg_chrg_vbus(&fsl_otg_dev->fsm, 1);
/* start the timer to end vbus charge */
- fsl_otg_add_timer(b_vbus_pulse_tmr);
+ fsl_otg_add_timer(&fsl_otg_dev->fsm, b_vbus_pulse_tmr);
}
void b_vbus_pulse_end(unsigned long foo)
{
- fsl_otg_chrg_vbus(0);
+ fsl_otg_chrg_vbus(&fsl_otg_dev->fsm, 0);
/*
* As USB3300 using the same a_sess_vld and b_sess_vld voltage
@@ -267,7 +267,7 @@ void b_vbus_pulse_end(unsigned long foo)
* residual voltage of vbus pulsing and A device pull up
*/
fsl_otg_dischrg_vbus(1);
- fsl_otg_add_timer(b_srp_wait_tmr);
+ fsl_otg_add_timer(&fsl_otg_dev->fsm, b_srp_wait_tmr);
}
void b_srp_end(unsigned long foo)
@@ -289,7 +289,7 @@ void a_wait_enum(unsigned long foo)
{
VDBG("a_wait_enum timeout\n");
if (!fsl_otg_dev->phy.otg->host->b_hnp_enable)
- fsl_otg_add_timer(a_wait_enum_tmr);
+ fsl_otg_add_timer(&fsl_otg_dev->fsm, a_wait_enum_tmr);
else
otg_statemachine(&fsl_otg_dev->fsm);
}
@@ -375,8 +375,42 @@ void fsl_otg_uninit_timers(void)
kfree(b_vbus_pulse_tmr);
}
+static struct fsl_otg_timer *fsl_otg_get_timer(enum otg_fsm_timer t)
+{
+ struct fsl_otg_timer *timer;
+
+ /* REVISIT: use array of pointers to timers instead */
+ switch (t) {
+ case A_WAIT_VRISE:
+ timer = a_wait_vrise_tmr;
+ break;
+ case A_WAIT_BCON:
+ timer = a_wait_vrise_tmr;
+ break;
+ case A_AIDL_BDIS:
+ timer = a_wait_vrise_tmr;
+ break;
+ case B_ASE0_BRST:
+ timer = a_wait_vrise_tmr;
+ break;
+ case B_SE0_SRP:
+ timer = a_wait_vrise_tmr;
+ break;
+ case B_SRP_FAIL:
+ timer = a_wait_vrise_tmr;
+ break;
+ case A_WAIT_ENUM:
+ timer = a_wait_vrise_tmr;
+ break;
+ default:
+ timer = NULL;
+ }
+
+ return timer;
+}
+
/* Add timer to timer list */
-void fsl_otg_add_timer(void *gtimer)
+void fsl_otg_add_timer(struct otg_fsm *fsm, void *gtimer)
{
struct fsl_otg_timer *timer = gtimer;
struct fsl_otg_timer *tmp_timer;
@@ -394,8 +428,19 @@ void fsl_otg_add_timer(void *gtimer)
list_add_tail(&timer->list, &active_timers);
}
+static void fsl_otg_fsm_add_timer(struct otg_fsm *fsm, enum otg_fsm_timer t)
+{
+ struct fsl_otg_timer *timer;
+
+ timer = fsl_otg_get_timer(t);
+ if (!timer)
+ return;
+
+ fsl_otg_add_timer(fsm, timer);
+}
+
/* Remove timer from the timer list; clear timeout status */
-void fsl_otg_del_timer(void *gtimer)
+void fsl_otg_del_timer(struct otg_fsm *fsm, void *gtimer)
{
struct fsl_otg_timer *timer = gtimer;
struct fsl_otg_timer *tmp_timer, *del_tmp;
@@ -405,6 +450,17 @@ void fsl_otg_del_timer(void *gtimer)
list_del(&timer->list);
}
+static void fsl_otg_fsm_del_timer(struct otg_fsm *fsm, enum otg_fsm_timer t)
+{
+ struct fsl_otg_timer *timer;
+
+ timer = fsl_otg_get_timer(t);
+ if (!timer)
+ return;
+
+ fsl_otg_del_timer(fsm, timer);
+}
+
/*
* Reduce timer count by 1, and find timeout conditions.
* Called by fsl_otg 1ms timer interrupt
@@ -468,7 +524,7 @@ int fsl_otg_start_host(struct otg_fsm *fsm, int on)
retval = dev->driver->pm->resume(dev);
if (fsm->id) {
/* default-b */
- fsl_otg_drv_vbus(1);
+ fsl_otg_drv_vbus(fsm, 1);
/*
* Workaround: b_host can't driver
* vbus, but PP in PORTSC needs to
@@ -493,7 +549,7 @@ int fsl_otg_start_host(struct otg_fsm *fsm, int on)
retval = dev->driver->pm->suspend(dev);
if (fsm->id)
/* default-b */
- fsl_otg_drv_vbus(0);
+ fsl_otg_drv_vbus(fsm, 0);
}
otg_dev->host_working = 0;
}
@@ -757,8 +813,8 @@ static struct otg_fsm_ops fsl_otg_ops = {
.loc_sof = fsl_otg_loc_sof,
.start_pulse = fsl_otg_start_pulse,
- .add_timer = fsl_otg_add_timer,
- .del_timer = fsl_otg_del_timer,
+ .add_timer = fsl_otg_fsm_add_timer,
+ .del_timer = fsl_otg_fsm_del_timer,
.start_host = fsl_otg_start_host,
.start_gadget = fsl_otg_start_gadget,
@@ -1011,7 +1067,7 @@ static int show_fsl_usb2_otg_state(struct device *dev,
"b_bus_suspend: %d\n"
"b_conn: %d\n"
"b_se0_srp: %d\n"
- "b_sess_end: %d\n"
+ "b_ssend_srp: %d\n"
"b_sess_vld: %d\n"
"id: %d\n",
fsm->a_bus_req,
@@ -1026,7 +1082,7 @@ static int show_fsl_usb2_otg_state(struct device *dev,
fsm->b_bus_suspend,
fsm->b_conn,
fsm->b_se0_srp,
- fsm->b_sess_end,
+ fsm->b_ssend_srp,
fsm->b_sess_vld,
fsm->id);
size -= t;
@@ -1057,7 +1113,7 @@ static long fsl_otg_ioctl(struct file *file, unsigned int cmd,
break;
case SET_A_SUSPEND_REQ:
- fsl_otg_dev->fsm.a_suspend_req = arg;
+ fsl_otg_dev->fsm.a_suspend_req_inf = arg;
break;
case SET_A_BUS_DROP:
diff --git a/drivers/usb/phy/phy-fsl-usb.h b/drivers/usb/phy/phy-fsl-usb.h
index e1859b8ef567..7365170a2f23 100644
--- a/drivers/usb/phy/phy-fsl-usb.h
+++ b/drivers/usb/phy/phy-fsl-usb.h
@@ -401,6 +401,6 @@ struct fsl_otg_config {
#define GET_A_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 8, int)
#define GET_B_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 9, int)
-void fsl_otg_add_timer(void *timer);
-void fsl_otg_del_timer(void *timer);
+void fsl_otg_add_timer(struct otg_fsm *fsm, void *timer);
+void fsl_otg_del_timer(struct otg_fsm *fsm, void *timer);
void fsl_otg_pulse_vbus(void);
diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c
index 7f4596606e18..329c2d2f8595 100644
--- a/drivers/usb/phy/phy-fsm-usb.c
+++ b/drivers/usb/phy/phy-fsm-usb.c
@@ -41,17 +41,17 @@ static int otg_set_protocol(struct otg_fsm *fsm, int protocol)
fsm->protocol, protocol);
/* stop old protocol */
if (fsm->protocol == PROTO_HOST)
- ret = fsm->ops->start_host(fsm, 0);
+ ret = otg_start_host(fsm, 0);
else if (fsm->protocol == PROTO_GADGET)
- ret = fsm->ops->start_gadget(fsm, 0);
+ ret = otg_start_gadget(fsm, 0);
if (ret)
return ret;
/* start new protocol */
if (protocol == PROTO_HOST)
- ret = fsm->ops->start_host(fsm, 1);
+ ret = otg_start_host(fsm, 1);
else if (protocol == PROTO_GADGET)
- ret = fsm->ops->start_gadget(fsm, 1);
+ ret = otg_start_gadget(fsm, 1);
if (ret)
return ret;
@@ -69,42 +69,50 @@ void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
{
switch (old_state) {
case OTG_STATE_B_IDLE:
- otg_del_timer(fsm, b_se0_srp_tmr);
+ otg_del_timer(fsm, B_SE0_SRP);
fsm->b_se0_srp = 0;
+ fsm->adp_sns = 0;
+ fsm->adp_prb = 0;
break;
case OTG_STATE_B_SRP_INIT:
+ fsm->data_pulse = 0;
fsm->b_srp_done = 0;
break;
case OTG_STATE_B_PERIPHERAL:
break;
case OTG_STATE_B_WAIT_ACON:
- otg_del_timer(fsm, b_ase0_brst_tmr);
+ otg_del_timer(fsm, B_ASE0_BRST);
fsm->b_ase0_brst_tmout = 0;
break;
case OTG_STATE_B_HOST:
break;
case OTG_STATE_A_IDLE:
+ fsm->adp_prb = 0;
break;
case OTG_STATE_A_WAIT_VRISE:
- otg_del_timer(fsm, a_wait_vrise_tmr);
+ otg_del_timer(fsm, A_WAIT_VRISE);
fsm->a_wait_vrise_tmout = 0;
break;
case OTG_STATE_A_WAIT_BCON:
- otg_del_timer(fsm, a_wait_bcon_tmr);
+ otg_del_timer(fsm, A_WAIT_BCON);
fsm->a_wait_bcon_tmout = 0;
break;
case OTG_STATE_A_HOST:
- otg_del_timer(fsm, a_wait_enum_tmr);
+ otg_del_timer(fsm, A_WAIT_ENUM);
break;
case OTG_STATE_A_SUSPEND:
- otg_del_timer(fsm, a_aidl_bdis_tmr);
+ otg_del_timer(fsm, A_AIDL_BDIS);
fsm->a_aidl_bdis_tmout = 0;
- fsm->a_suspend_req = 0;
+ fsm->a_suspend_req_inf = 0;
break;
case OTG_STATE_A_PERIPHERAL:
+ otg_del_timer(fsm, A_BIDL_ADIS);
+ fsm->a_bidl_adis_tmout = 0;
break;
case OTG_STATE_A_WAIT_VFALL:
- otg_del_timer(fsm, a_wait_vrise_tmr);
+ otg_del_timer(fsm, A_WAIT_VFALL);
+ fsm->a_wait_vfall_tmout = 0;
+ otg_del_timer(fsm, A_WAIT_VRISE);
break;
case OTG_STATE_A_VBUS_ERR:
break;
@@ -127,14 +135,19 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_chrg_vbus(fsm, 0);
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
+ /*
+ * Driver is responsible for starting ADP probing
+ * if ADP sensing times out.
+ */
+ otg_start_adp_sns(fsm);
otg_set_protocol(fsm, PROTO_UNDEF);
- otg_add_timer(fsm, b_se0_srp_tmr);
+ otg_add_timer(fsm, B_SE0_SRP);
break;
case OTG_STATE_B_SRP_INIT:
otg_start_pulse(fsm);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_UNDEF);
- otg_add_timer(fsm, b_srp_fail_tmr);
+ otg_add_timer(fsm, B_SRP_FAIL);
break;
case OTG_STATE_B_PERIPHERAL:
otg_chrg_vbus(fsm, 0);
@@ -147,7 +160,7 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_HOST);
- otg_add_timer(fsm, b_ase0_brst_tmr);
+ otg_add_timer(fsm, B_ASE0_BRST);
fsm->a_bus_suspend = 0;
break;
case OTG_STATE_B_HOST:
@@ -163,6 +176,7 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_chrg_vbus(fsm, 0);
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
+ otg_start_adp_prb(fsm);
otg_set_protocol(fsm, PROTO_HOST);
break;
case OTG_STATE_A_WAIT_VRISE:
@@ -170,14 +184,14 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_HOST);
- otg_add_timer(fsm, a_wait_vrise_tmr);
+ otg_add_timer(fsm, A_WAIT_VRISE);
break;
case OTG_STATE_A_WAIT_BCON:
otg_drv_vbus(fsm, 1);
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_HOST);
- otg_add_timer(fsm, a_wait_bcon_tmr);
+ otg_add_timer(fsm, A_WAIT_BCON);
break;
case OTG_STATE_A_HOST:
otg_drv_vbus(fsm, 1);
@@ -188,15 +202,15 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
* When HNP is triggered while a_bus_req = 0, a_host will
* suspend too fast to complete a_set_b_hnp_en
*/
- if (!fsm->a_bus_req || fsm->a_suspend_req)
- otg_add_timer(fsm, a_wait_enum_tmr);
+ if (!fsm->a_bus_req || fsm->a_suspend_req_inf)
+ otg_add_timer(fsm, A_WAIT_ENUM);
break;
case OTG_STATE_A_SUSPEND:
otg_drv_vbus(fsm, 1);
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_HOST);
- otg_add_timer(fsm, a_aidl_bdis_tmr);
+ otg_add_timer(fsm, A_AIDL_BDIS);
break;
case OTG_STATE_A_PERIPHERAL:
@@ -204,12 +218,14 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_GADGET);
otg_drv_vbus(fsm, 1);
+ otg_add_timer(fsm, A_BIDL_ADIS);
break;
case OTG_STATE_A_WAIT_VFALL:
otg_drv_vbus(fsm, 0);
otg_loc_conn(fsm, 0);
otg_loc_sof(fsm, 0);
otg_set_protocol(fsm, PROTO_HOST);
+ otg_add_timer(fsm, A_WAIT_VFALL);
break;
case OTG_STATE_A_VBUS_ERR:
otg_drv_vbus(fsm, 0);
@@ -250,7 +266,8 @@ int otg_statemachine(struct otg_fsm *fsm)
otg_set_state(fsm, OTG_STATE_A_IDLE);
else if (fsm->b_sess_vld && fsm->otg->gadget)
otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
- else if (fsm->b_bus_req && fsm->b_sess_end && fsm->b_se0_srp)
+ else if ((fsm->b_bus_req || fsm->adp_change || fsm->power_up) &&
+ fsm->b_ssend_srp && fsm->b_se0_srp)
otg_set_state(fsm, OTG_STATE_B_SRP_INIT);
break;
case OTG_STATE_B_SRP_INIT:
@@ -277,13 +294,14 @@ int otg_statemachine(struct otg_fsm *fsm)
case OTG_STATE_B_HOST:
if (!fsm->id || !fsm->b_sess_vld)
otg_set_state(fsm, OTG_STATE_B_IDLE);
- else if (!fsm->b_bus_req || !fsm->a_conn)
+ else if (!fsm->b_bus_req || !fsm->a_conn || fsm->test_device)
otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
break;
case OTG_STATE_A_IDLE:
if (fsm->id)
otg_set_state(fsm, OTG_STATE_B_IDLE);
- else if (!fsm->a_bus_drop && (fsm->a_bus_req || fsm->a_srp_det))
+ else if (!fsm->a_bus_drop && (fsm->a_bus_req ||
+ fsm->a_srp_det || fsm->adp_change || fsm->power_up))
otg_set_state(fsm, OTG_STATE_A_WAIT_VRISE);
break;
case OTG_STATE_A_WAIT_VRISE:
@@ -301,7 +319,7 @@ int otg_statemachine(struct otg_fsm *fsm)
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
break;
case OTG_STATE_A_HOST:
- if ((!fsm->a_bus_req || fsm->a_suspend_req) &&
+ if ((!fsm->a_bus_req || fsm->a_suspend_req_inf) &&
fsm->otg->host->b_hnp_enable)
otg_set_state(fsm, OTG_STATE_A_SUSPEND);
else if (fsm->id || !fsm->b_conn || fsm->a_bus_drop)
@@ -324,14 +342,14 @@ int otg_statemachine(struct otg_fsm *fsm)
case OTG_STATE_A_PERIPHERAL:
if (fsm->id || fsm->a_bus_drop)
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
- else if (fsm->b_bus_suspend)
+ else if (fsm->a_bidl_adis_tmout || fsm->b_bus_suspend)
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
else if (!fsm->a_vbus_vld)
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
break;
case OTG_STATE_A_WAIT_VFALL:
- if (fsm->id || fsm->a_bus_req || (!fsm->a_sess_vld &&
- !fsm->b_conn))
+ if (fsm->a_wait_vfall_tmout || fsm->id || fsm->a_bus_req ||
+ (!fsm->a_sess_vld && !fsm->b_conn))
otg_set_state(fsm, OTG_STATE_A_IDLE);
break;
case OTG_STATE_A_VBUS_ERR:
diff --git a/drivers/usb/phy/phy-fsm-usb.h b/drivers/usb/phy/phy-fsm-usb.h
index fbe586206f33..7441b46a27f1 100644
--- a/drivers/usb/phy/phy-fsm-usb.h
+++ b/drivers/usb/phy/phy-fsm-usb.h
@@ -34,45 +34,76 @@
#define PROTO_HOST (1)
#define PROTO_GADGET (2)
+enum otg_fsm_timer {
+ /* Standard OTG timers */
+ A_WAIT_VRISE,
+ A_WAIT_VFALL,
+ A_WAIT_BCON,
+ A_AIDL_BDIS,
+ B_ASE0_BRST,
+ A_BIDL_ADIS,
+
+ /* Auxiliary timers */
+ B_SE0_SRP,
+ B_SRP_FAIL,
+ A_WAIT_ENUM,
+
+ NUM_OTG_FSM_TIMERS,
+};
+
/* OTG state machine according to the OTG spec */
struct otg_fsm {
/* Input */
+ int id;
+ int adp_change;
+ int power_up;
+ int test_device;
+ int a_bus_drop;
+ int a_bus_req;
+ int a_srp_det;
+ int a_vbus_vld;
+ int b_conn;
int a_bus_resume;
int a_bus_suspend;
int a_conn;
+ int b_bus_req;
+ int b_se0_srp;
+ int b_ssend_srp;
+ int b_sess_vld;
+ /* Auxilary inputs */
int a_sess_vld;
- int a_srp_det;
- int a_vbus_vld;
int b_bus_resume;
int b_bus_suspend;
- int b_conn;
- int b_se0_srp;
- int b_sess_end;
- int b_sess_vld;
- int id;
+
+ /* Output */
+ int data_pulse;
+ int drv_vbus;
+ int loc_conn;
+ int loc_sof;
+ int adp_prb;
+ int adp_sns;
/* Internal variables */
int a_set_b_hnp_en;
int b_srp_done;
int b_hnp_enable;
+ int a_clr_err;
+
+ /* Informative variables */
+ int a_bus_drop_inf;
+ int a_bus_req_inf;
+ int a_clr_err_inf;
+ int b_bus_req_inf;
+ /* Auxilary informative variables */
+ int a_suspend_req_inf;
/* Timeout indicator for timers */
int a_wait_vrise_tmout;
+ int a_wait_vfall_tmout;
int a_wait_bcon_tmout;
int a_aidl_bdis_tmout;
int b_ase0_brst_tmout;
-
- /* Informative variables */
- int a_bus_drop;
- int a_bus_req;
- int a_clr_err;
- int a_suspend_req;
- int b_bus_req;
-
- /* Output */
- int drv_vbus;
- int loc_conn;
- int loc_sof;
+ int a_bidl_adis_tmout;
struct otg_fsm_ops *ops;
struct usb_otg *otg;
@@ -83,65 +114,123 @@ struct otg_fsm {
};
struct otg_fsm_ops {
- void (*chrg_vbus)(int on);
- void (*drv_vbus)(int on);
- void (*loc_conn)(int on);
- void (*loc_sof)(int on);
- void (*start_pulse)(void);
- void (*add_timer)(void *timer);
- void (*del_timer)(void *timer);
+ void (*chrg_vbus)(struct otg_fsm *fsm, int on);
+ void (*drv_vbus)(struct otg_fsm *fsm, int on);
+ void (*loc_conn)(struct otg_fsm *fsm, int on);
+ void (*loc_sof)(struct otg_fsm *fsm, int on);
+ void (*start_pulse)(struct otg_fsm *fsm);
+ void (*start_adp_prb)(struct otg_fsm *fsm);
+ void (*start_adp_sns)(struct otg_fsm *fsm);
+ void (*add_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
+ void (*del_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
int (*start_host)(struct otg_fsm *fsm, int on);
int (*start_gadget)(struct otg_fsm *fsm, int on);
};
-static inline void otg_chrg_vbus(struct otg_fsm *fsm, int on)
+static inline int otg_chrg_vbus(struct otg_fsm *fsm, int on)
{
- fsm->ops->chrg_vbus(on);
+ if (!fsm->ops->chrg_vbus)
+ return -EOPNOTSUPP;
+ fsm->ops->chrg_vbus(fsm, on);
+ return 0;
}
-static inline void otg_drv_vbus(struct otg_fsm *fsm, int on)
+static inline int otg_drv_vbus(struct otg_fsm *fsm, int on)
{
+ if (!fsm->ops->drv_vbus)
+ return -EOPNOTSUPP;
if (fsm->drv_vbus != on) {
fsm->drv_vbus = on;
- fsm->ops->drv_vbus(on);
+ fsm->ops->drv_vbus(fsm, on);
}
+ return 0;
}
-static inline void otg_loc_conn(struct otg_fsm *fsm, int on)
+static inline int otg_loc_conn(struct otg_fsm *fsm, int on)
{
+ if (!fsm->ops->loc_conn)
+ return -EOPNOTSUPP;
if (fsm->loc_conn != on) {
fsm->loc_conn = on;
- fsm->ops->loc_conn(on);
+ fsm->ops->loc_conn(fsm, on);
}
+ return 0;
}
-static inline void otg_loc_sof(struct otg_fsm *fsm, int on)
+static inline int otg_loc_sof(struct otg_fsm *fsm, int on)
{
+ if (!fsm->ops->loc_sof)
+ return -EOPNOTSUPP;
if (fsm->loc_sof != on) {
fsm->loc_sof = on;
- fsm->ops->loc_sof(on);
+ fsm->ops->loc_sof(fsm, on);
+ }
+ return 0;
+}
+
+static inline int otg_start_pulse(struct otg_fsm *fsm)
+{
+ if (!fsm->ops->start_pulse)
+ return -EOPNOTSUPP;
+ if (!fsm->data_pulse) {
+ fsm->data_pulse = 1;
+ fsm->ops->start_pulse(fsm);
}
+ return 0;
}
-static inline void otg_start_pulse(struct otg_fsm *fsm)
+static inline int otg_start_adp_prb(struct otg_fsm *fsm)
{
- fsm->ops->start_pulse();
+ if (!fsm->ops->start_adp_prb)
+ return -EOPNOTSUPP;
+ if (!fsm->adp_prb) {
+ fsm->adp_sns = 0;
+ fsm->adp_prb = 1;
+ fsm->ops->start_adp_prb(fsm);
+ }
+ return 0;
}
-static inline void otg_add_timer(struct otg_fsm *fsm, void *timer)
+static inline int otg_start_adp_sns(struct otg_fsm *fsm)
{
- fsm->ops->add_timer(timer);
+ if (!fsm->ops->start_adp_sns)
+ return -EOPNOTSUPP;
+ if (!fsm->adp_sns) {
+ fsm->adp_sns = 1;
+ fsm->ops->start_adp_sns(fsm);
+ }
+ return 0;
}
-static inline void otg_del_timer(struct otg_fsm *fsm, void *timer)
+static inline int otg_add_timer(struct otg_fsm *fsm, enum otg_fsm_timer timer)
{
- fsm->ops->del_timer(timer);
+ if (!fsm->ops->add_timer)
+ return -EOPNOTSUPP;
+ fsm->ops->add_timer(fsm, timer);
+ return 0;
}
-int otg_statemachine(struct otg_fsm *fsm);
+static inline int otg_del_timer(struct otg_fsm *fsm, enum otg_fsm_timer timer)
+{
+ if (!fsm->ops->del_timer)
+ return -EOPNOTSUPP;
+ fsm->ops->del_timer(fsm, timer);
+ return 0;
+}
-/* Defined by device specific driver, for different timer implementation */
-extern struct fsl_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr,
- *a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_fail_tmr,
- *a_wait_enum_tmr;
+static inline int otg_start_host(struct otg_fsm *fsm, int on)
+{
+ if (!fsm->ops->start_host)
+ return -EOPNOTSUPP;
+ return fsm->ops->start_host(fsm, on);
+}
+
+static inline int otg_start_gadget(struct otg_fsm *fsm, int on)
+{
+ if (!fsm->ops->start_gadget)
+ return -EOPNOTSUPP;
+ return fsm->ops->start_gadget(fsm, on);
+}
+
+int otg_statemachine(struct otg_fsm *fsm);
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index efe59f3f7fda..fce3a9e9bb5d 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -35,6 +35,9 @@
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
#include "phy-generic.h"
@@ -64,6 +67,23 @@ static int nop_set_suspend(struct usb_phy *x, int suspend)
return 0;
}
+static void nop_reset_set(struct usb_phy_gen_xceiv *nop, int asserted)
+{
+ int value;
+
+ if (!gpio_is_valid(nop->gpio_reset))
+ return;
+
+ value = asserted;
+ if (nop->reset_active_low)
+ value = !value;
+
+ gpio_set_value_cansleep(nop->gpio_reset, value);
+
+ if (!asserted)
+ usleep_range(10000, 20000);
+}
+
int usb_gen_phy_init(struct usb_phy *phy)
{
struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
@@ -74,13 +94,10 @@ int usb_gen_phy_init(struct usb_phy *phy)
}
if (!IS_ERR(nop->clk))
- clk_enable(nop->clk);
+ clk_prepare_enable(nop->clk);
- if (!IS_ERR(nop->reset)) {
- /* De-assert RESET */
- if (regulator_enable(nop->reset))
- dev_err(phy->dev, "Failed to de-assert reset\n");
- }
+ /* De-assert RESET */
+ nop_reset_set(nop, 0);
return 0;
}
@@ -90,14 +107,11 @@ void usb_gen_phy_shutdown(struct usb_phy *phy)
{
struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
- if (!IS_ERR(nop->reset)) {
- /* Assert RESET */
- if (regulator_disable(nop->reset))
- dev_err(phy->dev, "Failed to assert reset\n");
- }
+ /* Assert RESET */
+ nop_reset_set(nop, 1);
if (!IS_ERR(nop->clk))
- clk_disable(nop->clk);
+ clk_disable_unprepare(nop->clk);
if (!IS_ERR(nop->vcc)) {
if (regulator_disable(nop->vcc))
@@ -136,8 +150,7 @@ static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
}
int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
- enum usb_phy_type type, u32 clk_rate, bool needs_vcc,
- bool needs_reset)
+ enum usb_phy_type type, u32 clk_rate, bool needs_vcc)
{
int err;
@@ -160,14 +173,6 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
}
}
- if (!IS_ERR(nop->clk)) {
- err = clk_prepare(nop->clk);
- if (err) {
- dev_err(dev, "Error preparing clock\n");
- return err;
- }
- }
-
nop->vcc = devm_regulator_get(dev, "vcc");
if (IS_ERR(nop->vcc)) {
dev_dbg(dev, "Error getting vcc regulator: %ld\n",
@@ -176,12 +181,22 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
return -EPROBE_DEFER;
}
- nop->reset = devm_regulator_get(dev, "reset");
- if (IS_ERR(nop->reset)) {
- dev_dbg(dev, "Error getting reset regulator: %ld\n",
- PTR_ERR(nop->reset));
- if (needs_reset)
- return -EPROBE_DEFER;
+ if (gpio_is_valid(nop->gpio_reset)) {
+ unsigned long gpio_flags;
+
+ /* Assert RESET */
+ if (nop->reset_active_low)
+ gpio_flags = GPIOF_OUT_INIT_LOW;
+ else
+ gpio_flags = GPIOF_OUT_INIT_HIGH;
+
+ err = devm_gpio_request_one(dev, nop->gpio_reset,
+ gpio_flags, dev_name(dev));
+ if (err) {
+ dev_err(dev, "Error requesting RESET GPIO %d\n",
+ nop->gpio_reset);
+ return err;
+ }
}
nop->dev = dev;
@@ -200,13 +215,6 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
}
EXPORT_SYMBOL_GPL(usb_phy_gen_create_phy);
-void usb_phy_gen_cleanup_phy(struct usb_phy_gen_xceiv *nop)
-{
- if (!IS_ERR(nop->clk))
- clk_unprepare(nop->clk);
-}
-EXPORT_SYMBOL_GPL(usb_phy_gen_cleanup_phy);
-
static int usb_phy_gen_xceiv_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -217,31 +225,36 @@ static int usb_phy_gen_xceiv_probe(struct platform_device *pdev)
int err;
u32 clk_rate = 0;
bool needs_vcc = false;
- bool needs_reset = false;
+
+ nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL);
+ if (!nop)
+ return -ENOMEM;
+
+ nop->reset_active_low = true; /* default behaviour */
if (dev->of_node) {
struct device_node *node = dev->of_node;
+ enum of_gpio_flags flags;
if (of_property_read_u32(node, "clock-frequency", &clk_rate))
clk_rate = 0;
needs_vcc = of_property_read_bool(node, "vcc-supply");
- needs_reset = of_property_read_bool(node, "reset-supply");
+ nop->gpio_reset = of_get_named_gpio_flags(node, "reset-gpios",
+ 0, &flags);
+ if (nop->gpio_reset == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ nop->reset_active_low = flags & OF_GPIO_ACTIVE_LOW;
} else if (pdata) {
type = pdata->type;
clk_rate = pdata->clk_rate;
needs_vcc = pdata->needs_vcc;
- needs_reset = pdata->needs_reset;
+ nop->gpio_reset = pdata->gpio_reset;
}
- nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL);
- if (!nop)
- return -ENOMEM;
-
-
- err = usb_phy_gen_create_phy(dev, nop, type, clk_rate, needs_vcc,
- needs_reset);
+ err = usb_phy_gen_create_phy(dev, nop, type, clk_rate, needs_vcc);
if (err)
return err;
@@ -252,15 +265,13 @@ static int usb_phy_gen_xceiv_probe(struct platform_device *pdev)
if (err) {
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
err);
- goto err_add;
+ return err;
}
platform_set_drvdata(pdev, nop);
return 0;
-err_add:
- usb_phy_gen_cleanup_phy(nop);
return err;
}
@@ -268,7 +279,6 @@ static int usb_phy_gen_xceiv_remove(struct platform_device *pdev)
{
struct usb_phy_gen_xceiv *nop = platform_get_drvdata(pdev);
- usb_phy_gen_cleanup_phy(nop);
usb_remove_phy(&nop->phy);
return 0;
diff --git a/drivers/usb/phy/phy-generic.h b/drivers/usb/phy/phy-generic.h
index 61687d5a965b..d2a220d81734 100644
--- a/drivers/usb/phy/phy-generic.h
+++ b/drivers/usb/phy/phy-generic.h
@@ -6,15 +6,14 @@ struct usb_phy_gen_xceiv {
struct device *dev;
struct clk *clk;
struct regulator *vcc;
- struct regulator *reset;
+ int gpio_reset;
+ bool reset_active_low;
};
int usb_gen_phy_init(struct usb_phy *phy);
void usb_gen_phy_shutdown(struct usb_phy *phy);
int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
- enum usb_phy_type type, u32 clk_rate, bool needs_vcc,
- bool needs_reset);
-void usb_phy_gen_cleanup_phy(struct usb_phy_gen_xceiv *nop);
+ enum usb_phy_type type, u32 clk_rate, bool needs_vcc);
#endif
diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c b/drivers/usb/phy/phy-rcar-gen2-usb.c
new file mode 100644
index 000000000000..a99a6953f11c
--- /dev/null
+++ b/drivers/usb/phy/phy-rcar-gen2-usb.c
@@ -0,0 +1,248 @@
+/*
+ * Renesas R-Car Gen2 USB phy driver
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Cogent Embedded, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_data/usb-rcar-gen2-phy.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/usb/otg.h>
+
+struct rcar_gen2_usb_phy_priv {
+ struct usb_phy phy;
+ void __iomem *base;
+ struct clk *clk;
+ spinlock_t lock;
+ int usecount;
+ u32 ugctrl2;
+};
+
+#define usb_phy_to_priv(p) container_of(p, struct rcar_gen2_usb_phy_priv, phy)
+
+/* Low Power Status register */
+#define USBHS_LPSTS_REG 0x02
+#define USBHS_LPSTS_SUSPM (1 << 14)
+
+/* USB General control register */
+#define USBHS_UGCTRL_REG 0x80
+#define USBHS_UGCTRL_CONNECT (1 << 2)
+#define USBHS_UGCTRL_PLLRESET (1 << 0)
+
+/* USB General control register 2 */
+#define USBHS_UGCTRL2_REG 0x84
+#define USBHS_UGCTRL2_USB0_PCI (1 << 4)
+#define USBHS_UGCTRL2_USB0_HS (3 << 4)
+#define USBHS_UGCTRL2_USB2_PCI (0 << 31)
+#define USBHS_UGCTRL2_USB2_SS (1 << 31)
+
+/* USB General status register */
+#define USBHS_UGSTS_REG 0x88
+#define USBHS_UGSTS_LOCK (3 << 8)
+
+/* Enable USBHS internal phy */
+static int __rcar_gen2_usbhs_phy_enable(void __iomem *base)
+{
+ u32 val;
+ int i;
+
+ /* USBHS PHY power on */
+ val = ioread32(base + USBHS_UGCTRL_REG);
+ val &= ~USBHS_UGCTRL_PLLRESET;
+ iowrite32(val, base + USBHS_UGCTRL_REG);
+
+ val = ioread16(base + USBHS_LPSTS_REG);
+ val |= USBHS_LPSTS_SUSPM;
+ iowrite16(val, base + USBHS_LPSTS_REG);
+
+ for (i = 0; i < 20; i++) {
+ val = ioread32(base + USBHS_UGSTS_REG);
+ if ((val & USBHS_UGSTS_LOCK) == USBHS_UGSTS_LOCK) {
+ val = ioread32(base + USBHS_UGCTRL_REG);
+ val |= USBHS_UGCTRL_CONNECT;
+ iowrite32(val, base + USBHS_UGCTRL_REG);
+ return 0;
+ }
+ udelay(1);
+ }
+
+ /* Timed out waiting for the PLL lock */
+ return -ETIMEDOUT;
+}
+
+/* Disable USBHS internal phy */
+static int __rcar_gen2_usbhs_phy_disable(void __iomem *base)
+{
+ u32 val;
+
+ /* USBHS PHY power off */
+ val = ioread32(base + USBHS_UGCTRL_REG);
+ val &= ~USBHS_UGCTRL_CONNECT;
+ iowrite32(val, base + USBHS_UGCTRL_REG);
+
+ val = ioread16(base + USBHS_LPSTS_REG);
+ val &= ~USBHS_LPSTS_SUSPM;
+ iowrite16(val, base + USBHS_LPSTS_REG);
+
+ val = ioread32(base + USBHS_UGCTRL_REG);
+ val |= USBHS_UGCTRL_PLLRESET;
+ iowrite32(val, base + USBHS_UGCTRL_REG);
+ return 0;
+}
+
+/* Setup USB channels */
+static void __rcar_gen2_usb_phy_init(struct rcar_gen2_usb_phy_priv *priv)
+{
+ u32 val;
+
+ clk_prepare_enable(priv->clk);
+
+ /* Set USB channels in the USBHS UGCTRL2 register */
+ val = ioread32(priv->base);
+ val &= ~(USBHS_UGCTRL2_USB0_HS | USBHS_UGCTRL2_USB2_SS);
+ val |= priv->ugctrl2;
+ iowrite32(val, priv->base);
+}
+
+/* Shutdown USB channels */
+static void __rcar_gen2_usb_phy_shutdown(struct rcar_gen2_usb_phy_priv *priv)
+{
+ __rcar_gen2_usbhs_phy_disable(priv->base);
+ clk_disable_unprepare(priv->clk);
+}
+
+static int rcar_gen2_usb_phy_set_suspend(struct usb_phy *phy, int suspend)
+{
+ struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
+ unsigned long flags;
+ int retval;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ retval = suspend ? __rcar_gen2_usbhs_phy_disable(priv->base) :
+ __rcar_gen2_usbhs_phy_enable(priv->base);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return retval;
+}
+
+static int rcar_gen2_usb_phy_init(struct usb_phy *phy)
+{
+ struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ /*
+ * Enable the clock and setup USB channels
+ * if it's the first user
+ */
+ if (!priv->usecount++)
+ __rcar_gen2_usb_phy_init(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return 0;
+}
+
+static void rcar_gen2_usb_phy_shutdown(struct usb_phy *phy)
+{
+ struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!priv->usecount) {
+ dev_warn(phy->dev, "Trying to disable phy with 0 usecount\n");
+ goto out;
+ }
+
+ /* Disable everything if it's the last user */
+ if (!--priv->usecount)
+ __rcar_gen2_usb_phy_shutdown(priv);
+out:
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static int rcar_gen2_usb_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct rcar_gen2_phy_platform_data *pdata;
+ struct rcar_gen2_usb_phy_priv *priv;
+ struct resource *res;
+ void __iomem *base;
+ struct clk *clk;
+ int retval;
+
+ pdata = dev_get_platdata(&pdev->dev);
+ if (!pdata) {
+ dev_err(dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ clk = devm_clk_get(&pdev->dev, "usbhs");
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev, "Can't get the clock\n");
+ return PTR_ERR(clk);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&priv->lock);
+ priv->clk = clk;
+ priv->base = base;
+ priv->ugctrl2 = pdata->chan0_pci ?
+ USBHS_UGCTRL2_USB0_PCI : USBHS_UGCTRL2_USB0_HS;
+ priv->ugctrl2 |= pdata->chan2_pci ?
+ USBHS_UGCTRL2_USB2_PCI : USBHS_UGCTRL2_USB2_SS;
+ priv->phy.dev = dev;
+ priv->phy.label = dev_name(dev);
+ priv->phy.init = rcar_gen2_usb_phy_init;
+ priv->phy.shutdown = rcar_gen2_usb_phy_shutdown;
+ priv->phy.set_suspend = rcar_gen2_usb_phy_set_suspend;
+
+ retval = usb_add_phy(&priv->phy, USB_PHY_TYPE_USB2);
+ if (retval < 0) {
+ dev_err(dev, "Failed to add USB phy\n");
+ return retval;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ return retval;
+}
+
+static int rcar_gen2_usb_phy_remove(struct platform_device *pdev)
+{
+ struct rcar_gen2_usb_phy_priv *priv = platform_get_drvdata(pdev);
+
+ usb_remove_phy(&priv->phy);
+
+ return 0;
+}
+
+static struct platform_driver rcar_gen2_usb_phy_driver = {
+ .driver = {
+ .name = "usb_phy_rcar_gen2",
+ },
+ .probe = rcar_gen2_usb_phy_probe,
+ .remove = rcar_gen2_usb_phy_remove,
+};
+
+module_platform_driver(rcar_gen2_usb_phy_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Renesas R-Car Gen2 USB phy");
+MODULE_AUTHOR("Valentine Barshak <valentine.barshak@cogentembedded.com>");
diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c
index e9cb1cb8abc7..82232acf1ab6 100644
--- a/drivers/usb/phy/phy-tegra-usb.c
+++ b/drivers/usb/phy/phy-tegra-usb.c
@@ -1090,7 +1090,7 @@ static struct platform_driver tegra_usb_phy_driver = {
.driver = {
.name = "tegra-phy",
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(tegra_usb_phy_id_table),
+ .of_match_table = tegra_usb_phy_id_table,
},
};
module_platform_driver(tegra_usb_phy_driver);
diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c
index 16dbc9382678..30e8a61552d4 100644
--- a/drivers/usb/phy/phy-twl6030-usb.c
+++ b/drivers/usb/phy/phy-twl6030-usb.c
@@ -33,6 +33,7 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/delay.h>
+#include <linux/of.h>
/* usb register definitions */
#define USB_VENDOR_ID_LSB 0x00
diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index a9984c700d2c..1b74523e1fee 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -98,7 +98,7 @@ struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type)
ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL);
if (!ptr)
- return NULL;
+ return ERR_PTR(-ENOMEM);
phy = usb_get_phy(type);
if (!IS_ERR(phy)) {