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path: root/drivers/usb/musb
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Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/Kconfig8
-rw-r--r--drivers/usb/musb/am35x.c8
-rw-r--r--drivers/usb/musb/blackfin.c6
-rw-r--r--drivers/usb/musb/cppi_dma.c17
-rw-r--r--drivers/usb/musb/da8xx.c8
-rw-r--r--drivers/usb/musb/davinci.c4
-rw-r--r--drivers/usb/musb/musb_core.c71
-rw-r--r--drivers/usb/musb/musb_dsps.c14
-rw-r--r--drivers/usb/musb/musb_gadget.c156
-rw-r--r--drivers/usb/musb/musb_gadget_ep0.c6
-rw-r--r--drivers/usb/musb/musb_host.c119
-rw-r--r--drivers/usb/musb/musb_virthub.c4
-rw-r--r--drivers/usb/musb/omap2430.c32
-rw-r--r--drivers/usb/musb/tusb6010.c14
-rw-r--r--drivers/usb/musb/ux500.c106
-rw-r--r--drivers/usb/musb/ux500_dma.c24
16 files changed, 350 insertions, 247 deletions
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 05e51432dd2..06f8d29af1e 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -6,8 +6,7 @@
# (M)HDRC = (Multipoint) Highspeed Dual-Role Controller
config USB_MUSB_HDRC
tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)'
- depends on USB && USB_GADGET
- select USB_OTG_UTILS
+ depends on USB_GADGET
help
Say Y here if your system has a dual role high speed USB
controller based on the Mentor Graphics silicon IP. Then
@@ -34,10 +33,12 @@ choice
config USB_MUSB_DAVINCI
tristate "DaVinci"
depends on ARCH_DAVINCI_DMx
+ depends on BROKEN
config USB_MUSB_DA8XX
tristate "DA8xx/OMAP-L1x"
depends on ARCH_DAVINCI_DA8XX
+ depends on BROKEN
config USB_MUSB_TUSB6010
tristate "TUSB6010"
@@ -53,7 +54,6 @@ config USB_MUSB_AM35X
config USB_MUSB_DSPS
tristate "TI DSPS platforms"
- depends on SOC_TI81XX || SOC_AM33XX
config USB_MUSB_BLACKFIN
tristate "Blackfin"
@@ -61,12 +61,12 @@ config USB_MUSB_BLACKFIN
config USB_MUSB_UX500
tristate "U8500 and U5500"
- depends on (ARCH_U8500 && AB8500_USB)
endchoice
choice
prompt 'MUSB DMA mode'
+ default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM
default USB_UX500_DMA if USB_MUSB_UX500
default USB_INVENTRA_DMA if USB_MUSB_OMAP2PLUS || USB_MUSB_BLACKFIN
default USB_TI_CPPI_DMA if USB_MUSB_DAVINCI
diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
index 59eea219034..2231850c062 100644
--- a/drivers/usb/musb/am35x.c
+++ b/drivers/usb/musb/am35x.c
@@ -149,7 +149,7 @@ static void otg_timer(unsigned long _musb)
*/
devctl = musb_readb(mregs, MUSB_DEVCTL);
dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->state) {
@@ -195,7 +195,7 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout)
if (musb->is_active || (musb->a_wait_bcon == 0 &&
musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
del_timer(&otg_workaround);
last_timer = jiffies;
return;
@@ -208,7 +208,7 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout)
last_timer = timeout;
dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
jiffies_to_msecs(timeout - jiffies));
mod_timer(&otg_workaround, timeout);
}
@@ -298,7 +298,7 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci)
/* NOTE: this must complete power-on within 100 ms. */
dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
drvvbus ? "on" : "off",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
err ? " ERROR" : "",
devctl);
ret = IRQ_HANDLED;
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index dbb31b30c7f..5e63b160db0 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -280,13 +280,13 @@ static void musb_conn_timer_handler(unsigned long _musb)
break;
default:
dev_dbg(musb->controller, "%s state not handled\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
break;
}
spin_unlock_irqrestore(&musb->lock, flags);
dev_dbg(musb->controller, "state is %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
static void bfin_musb_enable(struct musb *musb)
@@ -307,7 +307,7 @@ static void bfin_musb_set_vbus(struct musb *musb, int is_on)
dev_dbg(musb->controller, "VBUS %s, devctl %02x "
/* otg %3x conf %08x prcm %08x */ "\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index f522000e8f0..9db211ee15b 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -435,7 +435,6 @@ cppi_rndis_update(struct cppi_channel *c, int is_rx,
}
}
-#ifdef CONFIG_USB_MUSB_DEBUG
static void cppi_dump_rxbd(const char *tag, struct cppi_descriptor *bd)
{
pr_debug("RXBD/%s %08x: "
@@ -444,21 +443,16 @@ static void cppi_dump_rxbd(const char *tag, struct cppi_descriptor *bd)
bd->hw_next, bd->hw_bufp, bd->hw_off_len,
bd->hw_options);
}
-#endif
static void cppi_dump_rxq(int level, const char *tag, struct cppi_channel *rx)
{
-#ifdef CONFIG_USB_MUSB_DEBUG
struct cppi_descriptor *bd;
- if (!_dbg_level(level))
- return;
cppi_dump_rx(level, rx, tag);
if (rx->last_processed)
cppi_dump_rxbd("last", rx->last_processed);
for (bd = rx->head; bd; bd = bd->next)
cppi_dump_rxbd("active", bd);
-#endif
}
@@ -784,6 +778,7 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket)
void __iomem *tibase = musb->ctrl_base;
int is_rndis = 0;
struct cppi_rx_stateram __iomem *rx_ram = rx->state_ram;
+ struct cppi_descriptor *d;
if (onepacket) {
/* almost every USB driver, host or peripheral side */
@@ -897,14 +892,8 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket)
bd->hw_options |= CPPI_SOP_SET;
tail->hw_options |= CPPI_EOP_SET;
-#ifdef CONFIG_USB_MUSB_DEBUG
- if (_dbg_level(5)) {
- struct cppi_descriptor *d;
-
- for (d = rx->head; d; d = d->next)
- cppi_dump_rxbd("S", d);
- }
-#endif
+ for (d = rx->head; d; d = d->next)
+ cppi_dump_rxbd("S", d);
/* in case the preceding transfer left some state... */
tail = rx->last_processed;
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index 41613a2b35e..b903b744a22 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -198,7 +198,7 @@ static void otg_timer(unsigned long _musb)
*/
devctl = musb_readb(mregs, MUSB_DEVCTL);
dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->state) {
@@ -267,7 +267,7 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout)
if (musb->is_active || (musb->a_wait_bcon == 0 &&
musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
del_timer(&otg_workaround);
last_timer = jiffies;
return;
@@ -280,7 +280,7 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout)
last_timer = timeout;
dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
jiffies_to_msecs(timeout - jiffies));
mod_timer(&otg_workaround, timeout);
}
@@ -360,7 +360,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
drvvbus ? "on" : "off",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
err ? " ERROR" : "",
devctl);
ret = IRQ_HANDLED;
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index e040d910373..bea6cc35471 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -215,7 +215,7 @@ static void otg_timer(unsigned long _musb)
*/
devctl = musb_readb(mregs, MUSB_DEVCTL);
dev_dbg(musb->controller, "poll devctl %02x (%s)\n", devctl,
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->state) {
@@ -349,7 +349,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci)
davinci_musb_source_power(musb, drvvbus, 0);
dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
drvvbus ? "on" : "off",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
err ? " ERROR" : "",
devctl);
retval = IRQ_HANDLED;
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index daec6e0f7e3..37a261a6bb6 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -372,13 +372,13 @@ static void musb_otg_timer_func(unsigned long data)
case OTG_STATE_A_SUSPEND:
case OTG_STATE_A_WAIT_BCON:
dev_dbg(musb->controller, "HNP: %s timeout\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
musb_platform_set_vbus(musb, 0);
musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
break;
default:
dev_dbg(musb->controller, "HNP: Unhandled mode %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
musb->ignore_disconnect = 0;
spin_unlock_irqrestore(&musb->lock, flags);
@@ -393,13 +393,14 @@ void musb_hnp_stop(struct musb *musb)
void __iomem *mbase = musb->mregs;
u8 reg;
- dev_dbg(musb->controller, "HNP: stop from %s\n", otg_state_string(musb->xceiv->state));
+ dev_dbg(musb->controller, "HNP: stop from %s\n",
+ usb_otg_state_string(musb->xceiv->state));
switch (musb->xceiv->state) {
case OTG_STATE_A_PERIPHERAL:
musb_g_disconnect(musb);
dev_dbg(musb->controller, "HNP: back to %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
break;
case OTG_STATE_B_HOST:
dev_dbg(musb->controller, "HNP: Disabling HR\n");
@@ -413,7 +414,7 @@ void musb_hnp_stop(struct musb *musb)
break;
default:
dev_dbg(musb->controller, "HNP: Stopping in unknown state %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
/*
@@ -451,7 +452,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
*/
if (int_usb & MUSB_INTR_RESUME) {
handled = IRQ_HANDLED;
- dev_dbg(musb->controller, "RESUME (%s)\n", otg_state_string(musb->xceiv->state));
+ dev_dbg(musb->controller, "RESUME (%s)\n", usb_otg_state_string(musb->xceiv->state));
if (devctl & MUSB_DEVCTL_HM) {
void __iomem *mbase = musb->mregs;
@@ -493,7 +494,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
default:
WARNING("bogus %s RESUME (%s)\n",
"host",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
} else {
switch (musb->xceiv->state) {
@@ -522,7 +523,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
default:
WARNING("bogus %s RESUME (%s)\n",
"peripheral",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
}
}
@@ -538,7 +539,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
}
dev_dbg(musb->controller, "SESSION_REQUEST (%s)\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
/* IRQ arrives from ID pin sense or (later, if VBUS power
* is removed) SRP. responses are time critical:
@@ -602,8 +603,9 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
break;
}
- dev_dbg(musb->controller, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
- otg_state_string(musb->xceiv->state),
+ dev_printk(ignore ? KERN_DEBUG : KERN_ERR, musb->controller,
+ "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
+ usb_otg_state_string(musb->xceiv->state),
devctl,
({ char *s;
switch (devctl & MUSB_DEVCTL_VBUS) {
@@ -628,7 +630,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
if (int_usb & MUSB_INTR_SUSPEND) {
dev_dbg(musb->controller, "SUSPEND (%s) devctl %02x\n",
- otg_state_string(musb->xceiv->state), devctl);
+ usb_otg_state_string(musb->xceiv->state), devctl);
handled = IRQ_HANDLED;
switch (musb->xceiv->state) {
@@ -745,12 +747,12 @@ b_host:
usb_hcd_resume_root_hub(hcd);
dev_dbg(musb->controller, "CONNECT (%s) devctl %02x\n",
- otg_state_string(musb->xceiv->state), devctl);
+ usb_otg_state_string(musb->xceiv->state), devctl);
}
if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) {
dev_dbg(musb->controller, "DISCONNECT (%s) as %s, devctl %02x\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
MUSB_MODE(musb), devctl);
handled = IRQ_HANDLED;
@@ -787,7 +789,7 @@ b_host:
break;
default:
WARNING("unhandled DISCONNECT transition (%s)\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
break;
}
}
@@ -813,7 +815,7 @@ b_host:
}
} else {
dev_dbg(musb->controller, "BUS RESET as %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
switch (musb->xceiv->state) {
case OTG_STATE_A_SUSPEND:
/* We need to ignore disconnect on suspend
@@ -826,7 +828,7 @@ b_host:
case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */
/* never use invalid T(a_wait_bcon) */
dev_dbg(musb->controller, "HNP: in %s, %d msec timeout\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
TA_WAIT_BCON(musb));
mod_timer(&musb->otg_timer, jiffies
+ msecs_to_jiffies(TA_WAIT_BCON(musb)));
@@ -838,7 +840,7 @@ b_host:
break;
case OTG_STATE_B_WAIT_ACON:
dev_dbg(musb->controller, "HNP: RESET (%s), to b_peripheral\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb_g_reset(musb);
break;
@@ -850,7 +852,7 @@ b_host:
break;
default:
dev_dbg(musb->controller, "Unhandled BUS RESET as %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
}
}
@@ -1632,7 +1634,7 @@ musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
int ret = -EINVAL;
spin_lock_irqsave(&musb->lock, flags);
- ret = sprintf(buf, "%s\n", otg_state_string(musb->xceiv->state));
+ ret = sprintf(buf, "%s\n", usb_otg_state_string(musb->xceiv->state));
spin_unlock_irqrestore(&musb->lock, flags);
return ret;
@@ -1951,9 +1953,13 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
musb_write_ulpi_buscontrol(musb->mregs, busctl);
}
- MUSB_DEV_MODE(musb);
- musb->xceiv->otg->default_a = 0;
- musb->xceiv->state = OTG_STATE_B_IDLE;
+ if (musb->xceiv->otg->default_a) {
+ MUSB_HST_MODE(musb);
+ musb->xceiv->state = OTG_STATE_A_IDLE;
+ } else {
+ MUSB_DEV_MODE(musb);
+ musb->xceiv->state = OTG_STATE_B_IDLE;
+ }
status = musb_gadget_setup(musb);
@@ -2008,7 +2014,6 @@ static int musb_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int irq = platform_get_irq_byname(pdev, "mc");
- int status;
struct resource *iomem;
void __iomem *base;
@@ -2016,24 +2021,17 @@ static int musb_probe(struct platform_device *pdev)
if (!iomem || irq <= 0)
return -ENODEV;
- base = ioremap(iomem->start, resource_size(iomem));
- if (!base) {
- dev_err(dev, "ioremap failed\n");
- return -ENOMEM;
- }
+ base = devm_ioremap_resource(dev, iomem);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
- status = musb_init_controller(dev, irq, base);
- if (status < 0)
- iounmap(base);
-
- return status;
+ return musb_init_controller(dev, irq, base);
}
static int musb_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct musb *musb = dev_to_musb(dev);
- void __iomem *ctrl_base = musb->ctrl_base;
/* this gets called on rmmod.
* - Host mode: host may still be active
@@ -2044,7 +2042,6 @@ static int musb_remove(struct platform_device *pdev)
musb_shutdown(pdev);
musb_free(musb);
- iounmap(ctrl_base);
device_init_wakeup(dev, 0);
#ifndef CONFIG_MUSB_PIO_ONLY
dma_set_mask(dev, *dev->parent->dma_mask);
@@ -2293,8 +2290,6 @@ static int __init musb_init(void)
if (usb_disabled())
return 0;
- pr_info("%s: version " MUSB_VERSION ", ?dma?, otg (peripheral+host)\n",
- musb_driver_name);
return platform_driver_register(&musb_driver);
}
module_init(musb_init);
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 6bb89715b63..3a18e44e939 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -38,6 +38,7 @@
#include <linux/module.h>
#include <linux/usb/nop-usb-xceiv.h>
#include <linux/platform_data/usb-omap.h>
+#include <linux/sizes.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -224,7 +225,7 @@ static void otg_timer(unsigned long _musb)
*/
devctl = dsps_readb(mregs, MUSB_DEVCTL);
dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->state) {
@@ -273,7 +274,7 @@ static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
if (musb->is_active || (musb->a_wait_bcon == 0 &&
musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
del_timer(&glue->timer[pdev->id]);
glue->last_timer[pdev->id] = jiffies;
return;
@@ -288,7 +289,7 @@ static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
glue->last_timer[pdev->id] = timeout;
dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
jiffies_to_msecs(timeout - jiffies));
mod_timer(&glue->timer[pdev->id], timeout);
}
@@ -334,7 +335,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
* value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set.
* Also, DRVVBUS pulses for SRP (but not at 5V) ...
*/
- if (usbintr & MUSB_INTR_BABBLE)
+ if (is_host_active(musb) && usbintr & MUSB_INTR_BABBLE)
pr_info("CAUTION: musb: Babble Interrupt Occurred\n");
if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) {
@@ -377,7 +378,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
/* NOTE: this must complete power-on within 100 ms. */
dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
drvvbus ? "on" : "off",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
err ? " ERROR" : "",
devctl);
ret = IRQ_HANDLED;
@@ -596,14 +597,13 @@ err0:
static int dsps_probe(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
const struct dsps_musb_wrapper *wrp;
struct dsps_glue *glue;
struct resource *iomem;
int ret, i;
- match = of_match_node(musb_dsps_of_match, np);
+ match = of_match_node(musb_dsps_of_match, pdev->dev.of_node);
if (!match) {
dev_err(&pdev->dev, "fail to get matching of_match struct\n");
ret = -EINVAL;
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 83eddedcd9b..ba7092349fa 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -46,48 +46,6 @@
#include "musb_core.h"
-/* MUSB PERIPHERAL status 3-mar-2006:
- *
- * - EP0 seems solid. It passes both USBCV and usbtest control cases.
- * Minor glitches:
- *
- * + remote wakeup to Linux hosts work, but saw USBCV failures;
- * in one test run (operator error?)
- * + endpoint halt tests -- in both usbtest and usbcv -- seem
- * to break when dma is enabled ... is something wrongly
- * clearing SENDSTALL?
- *
- * - Mass storage behaved ok when last tested. Network traffic patterns
- * (with lots of short transfers etc) need retesting; they turn up the
- * worst cases of the DMA, since short packets are typical but are not
- * required.
- *
- * - TX/IN
- * + both pio and dma behave in with network and g_zero tests
- * + no cppi throughput issues other than no-hw-queueing
- * + failed with FLAT_REG (DaVinci)
- * + seems to behave with double buffering, PIO -and- CPPI
- * + with gadgetfs + AIO, requests got lost?
- *
- * - RX/OUT
- * + both pio and dma behave in with network and g_zero tests
- * + dma is slow in typical case (short_not_ok is clear)
- * + double buffering ok with PIO
- * + double buffering *FAILS* with CPPI, wrong data bytes sometimes
- * + request lossage observed with gadgetfs
- *
- * - ISO not tested ... might work, but only weakly isochronous
- *
- * - Gadget driver disabling of softconnect during bind() is ignored; so
- * drivers can't hold off host requests until userspace is ready.
- * (Workaround: they can turn it off later.)
- *
- * - PORTABILITY (assumes PIO works):
- * + DaVinci, basically works with cppi dma
- * + OMAP 2430, ditto with mentor dma
- * + TUSB 6010, platform-specific dma in the works
- */
-
/* ----------------------------------------------------------------------- */
#define is_buffer_mapped(req) (is_dma_capable() && \
@@ -280,41 +238,6 @@ static inline int max_ep_writesize(struct musb *musb, struct musb_ep *ep)
return ep->packet_sz;
}
-
-#ifdef CONFIG_USB_INVENTRA_DMA
-
-/* Peripheral tx (IN) using Mentor DMA works as follows:
- Only mode 0 is used for transfers <= wPktSize,
- mode 1 is used for larger transfers,
-
- One of the following happens:
- - Host sends IN token which causes an endpoint interrupt
- -> TxAvail
- -> if DMA is currently busy, exit.
- -> if queue is non-empty, txstate().
-
- - Request is queued by the gadget driver.
- -> if queue was previously empty, txstate()
-
- txstate()
- -> start
- /\ -> setup DMA
- | (data is transferred to the FIFO, then sent out when
- | IN token(s) are recd from Host.
- | -> DMA interrupt on completion
- | calls TxAvail.
- | -> stop DMA, ~DMAENAB,
- | -> set TxPktRdy for last short pkt or zlp
- | -> Complete Request
- | -> Continue next request (call txstate)
- |___________________________________|
-
- * Non-Mentor DMA engines can of course work differently, such as by
- * upleveling from irq-per-packet to irq-per-buffer.
- */
-
-#endif
-
/*
* An endpoint is transmitting data. This can be called either from
* the IRQ routine or from ep.queue() to kickstart a request on an
@@ -621,37 +544,6 @@ void musb_g_tx(struct musb *musb, u8 epnum)
/* ------------------------------------------------------------ */
-#ifdef CONFIG_USB_INVENTRA_DMA
-
-/* Peripheral rx (OUT) using Mentor DMA works as follows:
- - Only mode 0 is used.
-
- - Request is queued by the gadget class driver.
- -> if queue was previously empty, rxstate()
-
- - Host sends OUT token which causes an endpoint interrupt
- /\ -> RxReady
- | -> if request queued, call rxstate
- | /\ -> setup DMA
- | | -> DMA interrupt on completion
- | | -> RxReady
- | | -> stop DMA
- | | -> ack the read
- | | -> if data recd = max expected
- | | by the request, or host
- | | sent a short packet,
- | | complete the request,
- | | and start the next one.
- | |_____________________________________|
- | else just wait for the host
- | to send the next OUT token.
- |__________________________________________________|
-
- * Non-Mentor DMA engines can of course work differently.
- */
-
-#endif
-
/*
* Context: controller locked, IRQs blocked, endpoint selected
*/
@@ -740,7 +632,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
struct dma_controller *c;
struct dma_channel *channel;
int use_dma = 0;
- int transfer_size;
+ unsigned int transfer_size;
c = musb->dma_controller;
channel = musb_ep->dma;
@@ -782,10 +674,11 @@ static void rxstate(struct musb *musb, struct musb_request *req)
csr | MUSB_RXCSR_DMAMODE);
musb_writew(epio, MUSB_RXCSR, csr);
- transfer_size = min(request->length - request->actual,
+ transfer_size = min_t(unsigned int,
+ request->length -
+ request->actual,
channel->max_len);
musb_ep->dma->desired_mode = 1;
-
} else {
if (!musb_ep->hb_mult &&
musb_ep->hw_ep->rx_double_buffered)
@@ -815,7 +708,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
struct dma_controller *c;
struct dma_channel *channel;
- int transfer_size = 0;
+ unsigned int transfer_size = 0;
c = musb->dma_controller;
channel = musb_ep->dma;
@@ -824,11 +717,13 @@ static void rxstate(struct musb *musb, struct musb_request *req)
if (fifo_count < musb_ep->packet_sz)
transfer_size = fifo_count;
else if (request->short_not_ok)
- transfer_size = min(request->length -
+ transfer_size = min_t(unsigned int,
+ request->length -
request->actual,
channel->max_len);
else
- transfer_size = min(request->length -
+ transfer_size = min_t(unsigned int,
+ request->length -
request->actual,
(unsigned)fifo_count);
@@ -1681,7 +1576,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget)
goto done;
default:
dev_dbg(musb->controller, "Unhandled wake: %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
goto done;
}
@@ -1801,13 +1696,6 @@ static const struct usb_gadget_ops musb_gadget_operations = {
* all peripheral ports are external...
*/
-static void musb_gadget_release(struct device *dev)
-{
- /* kref_put(WHAT) */
- dev_dbg(dev, "%s\n", __func__);
-}
-
-
static void
init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in)
{
@@ -1892,12 +1780,7 @@ int musb_gadget_setup(struct musb *musb)
musb->g.speed = USB_SPEED_UNKNOWN;
/* this "gadget" abstracts/virtualizes the controller */
- dev_set_name(&musb->g.dev, "gadget");
- musb->g.dev.parent = musb->controller;
- musb->g.dev.dma_mask = musb->controller->dma_mask;
- musb->g.dev.release = musb_gadget_release;
musb->g.name = musb_driver_name;
-
musb->g.is_otg = 1;
musb_g_init_endpoints(musb);
@@ -1905,11 +1788,6 @@ int musb_gadget_setup(struct musb *musb)
musb->is_active = 0;
musb_platform_try_idle(musb, 0);
- status = device_register(&musb->g.dev);
- if (status != 0) {
- put_device(&musb->g.dev);
- return status;
- }
status = usb_add_gadget_udc(musb->controller, &musb->g);
if (status)
goto err;
@@ -1924,8 +1802,6 @@ err:
void musb_gadget_cleanup(struct musb *musb)
{
usb_del_gadget_udc(&musb->g);
- if (musb->g.dev.parent)
- device_unregister(&musb->g.dev);
}
/*
@@ -1977,9 +1853,8 @@ static int musb_gadget_start(struct usb_gadget *g,
goto err;
}
- if ((musb->xceiv->last_event == USB_EVENT_ID)
- && otg->set_vbus)
- otg_set_vbus(otg, 1);
+ if (musb->xceiv->last_event == USB_EVENT_ID)
+ musb_platform_set_vbus(musb, 1);
hcd->self.uses_pio_for_control = 1;
@@ -2063,6 +1938,7 @@ static int musb_gadget_stop(struct usb_gadget *g,
dev_dbg(musb->controller, "unregistering driver %s\n", driver->function);
musb->is_active = 0;
+ musb->gadget_driver = NULL;
musb_platform_try_idle(musb, 0);
spin_unlock_irqrestore(&musb->lock, flags);
@@ -2099,7 +1975,7 @@ void musb_g_resume(struct musb *musb)
break;
default:
WARNING("unhandled RESUME transition (%s)\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
}
@@ -2129,7 +2005,7 @@ void musb_g_suspend(struct musb *musb)
* A_PERIPHERAL may need care too
*/
WARNING("unhandled SUSPEND transition (%s)\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
}
@@ -2163,7 +2039,7 @@ void musb_g_disconnect(struct musb *musb)
switch (musb->xceiv->state) {
default:
dev_dbg(musb->controller, "Unhandled disconnect %s, setting a_idle\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
musb->xceiv->state = OTG_STATE_A_IDLE;
MUSB_HST_MODE(musb);
break;
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index c9c1ac4e075..2af45a0c893 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -505,8 +505,10 @@ static void ep0_rxstate(struct musb *musb)
req->status = -EOVERFLOW;
count = len;
}
- musb_read_fifo(&musb->endpoints[0], count, buf);
- req->actual += count;
+ if (count > 0) {
+ musb_read_fifo(&musb->endpoints[0], count, buf);
+ req->actual += count;
+ }
csr = MUSB_CSR0_P_SVDRXPKTRDY;
if (count < 64 || req->actual == req->length) {
musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 1ce1fcf3f3e..8914dec49f0 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2453,7 +2453,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
if (musb->is_active) {
WARNING("trying to suspend as %s while active\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
return -EBUSY;
} else
return 0;
@@ -2465,6 +2465,118 @@ static int musb_bus_resume(struct usb_hcd *hcd)
return 0;
}
+
+#ifndef CONFIG_MUSB_PIO_ONLY
+
+#define MUSB_USB_DMA_ALIGN 4
+
+struct musb_temp_buffer {
+ void *kmalloc_ptr;
+ void *old_xfer_buffer;
+ u8 data[0];
+};
+
+static void musb_free_temp_buffer(struct urb *urb)
+{
+ enum dma_data_direction dir;
+ struct musb_temp_buffer *temp;
+
+ if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER))
+ return;
+
+ dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+
+ temp = container_of(urb->transfer_buffer, struct musb_temp_buffer,
+ data);
+
+ if (dir == DMA_FROM_DEVICE) {
+ memcpy(temp->old_xfer_buffer, temp->data,
+ urb->transfer_buffer_length);
+ }
+ urb->transfer_buffer = temp->old_xfer_buffer;
+ kfree(temp->kmalloc_ptr);
+
+ urb->transfer_flags &= ~URB_ALIGNED_TEMP_BUFFER;
+}
+
+static int musb_alloc_temp_buffer(struct urb *urb, gfp_t mem_flags)
+{
+ enum dma_data_direction dir;
+ struct musb_temp_buffer *temp;
+ void *kmalloc_ptr;
+ size_t kmalloc_size;
+
+ if (urb->num_sgs || urb->sg ||
+ urb->transfer_buffer_length == 0 ||
+ !((uintptr_t)urb->transfer_buffer & (MUSB_USB_DMA_ALIGN - 1)))
+ return 0;
+
+ dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+
+ /* Allocate a buffer with enough padding for alignment */
+ kmalloc_size = urb->transfer_buffer_length +
+ sizeof(struct musb_temp_buffer) + MUSB_USB_DMA_ALIGN - 1;
+
+ kmalloc_ptr = kmalloc(kmalloc_size, mem_flags);
+ if (!kmalloc_ptr)
+ return -ENOMEM;
+
+ /* Position our struct temp_buffer such that data is aligned */
+ temp = PTR_ALIGN(kmalloc_ptr, MUSB_USB_DMA_ALIGN);
+
+
+ temp->kmalloc_ptr = kmalloc_ptr;
+ temp->old_xfer_buffer = urb->transfer_buffer;
+ if (dir == DMA_TO_DEVICE)
+ memcpy(temp->data, urb->transfer_buffer,
+ urb->transfer_buffer_length);
+ urb->transfer_buffer = temp->data;
+
+ urb->transfer_flags |= URB_ALIGNED_TEMP_BUFFER;
+
+ return 0;
+}
+
+static int musb_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct musb *musb = hcd_to_musb(hcd);
+ int ret;
+
+ /*
+ * The DMA engine in RTL1.8 and above cannot handle
+ * DMA addresses that are not aligned to a 4 byte boundary.
+ * For such engine implemented (un)map_urb_for_dma hooks.
+ * Do not use these hooks for RTL<1.8
+ */
+ if (musb->hwvers < MUSB_HWVERS_1800)
+ return usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
+
+ ret = musb_alloc_temp_buffer(urb, mem_flags);
+ if (ret)
+ return ret;
+
+ ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
+ if (ret)
+ musb_free_temp_buffer(urb);
+
+ return ret;
+}
+
+static void musb_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
+{
+ struct musb *musb = hcd_to_musb(hcd);
+
+ usb_hcd_unmap_urb_for_dma(hcd, urb);
+
+ /* Do not use this hook for RTL<1.8 (see description above) */
+ if (musb->hwvers < MUSB_HWVERS_1800)
+ return;
+
+ musb_free_temp_buffer(urb);
+}
+#endif /* !CONFIG_MUSB_PIO_ONLY */
+
const struct hc_driver musb_hc_driver = {
.description = "musb-hcd",
.product_desc = "MUSB HDRC host driver",
@@ -2484,6 +2596,11 @@ const struct hc_driver musb_hc_driver = {
.urb_dequeue = musb_urb_dequeue,
.endpoint_disable = musb_h_disable,
+#ifndef CONFIG_MUSB_PIO_ONLY
+ .map_urb_for_dma = musb_map_urb_for_dma,
+ .unmap_urb_for_dma = musb_unmap_urb_for_dma,
+#endif
+
.hub_status_data = musb_hub_status_data,
.hub_control = musb_hub_control,
.bus_suspend = musb_bus_suspend,
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index f70579154de..ef7d11045f5 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -95,7 +95,7 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend)
break;
default:
dev_dbg(musb->controller, "bogus rh suspend? %s\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
} else if (power & MUSB_POWER_SUSPENDM) {
power &= ~MUSB_POWER_SUSPENDM;
@@ -203,7 +203,7 @@ void musb_root_disconnect(struct musb *musb)
break;
default:
dev_dbg(musb->controller, "host disconnect (%s)\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
}
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 1a42a458f2c..3551f1a30c6 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -117,7 +117,7 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
if (musb->is_active || ((musb->a_wait_bcon == 0)
&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
del_timer(&musb_idle_timer);
last_timer = jiffies;
return;
@@ -134,7 +134,7 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
last_timer = timeout;
dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
(unsigned long)jiffies_to_msecs(timeout - jiffies));
mod_timer(&musb_idle_timer, timeout);
}
@@ -174,8 +174,7 @@ static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
}
}
- if (otg->set_vbus)
- otg_set_vbus(otg, 1);
+ otg_set_vbus(otg, 1);
} else {
musb->is_active = 1;
otg->default_a = 1;
@@ -200,7 +199,7 @@ static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
dev_dbg(musb->controller, "VBUS %s, devctl %02x "
/* otg %3x conf %08x prcm %08x */ "\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
@@ -292,14 +291,14 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
musb->xceiv->last_event = USB_EVENT_NONE;
if (musb->gadget_driver) {
+ omap2430_musb_set_vbus(musb, 0);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
}
- if (data->interface_type == MUSB_INTERFACE_UTMI) {
- if (musb->xceiv->otg->set_vbus)
- otg_set_vbus(musb->xceiv->otg, 0);
- }
+ if (data->interface_type == MUSB_INTERFACE_UTMI)
+ otg_set_vbus(musb->xceiv->otg, 0);
+
omap_control_usb_set_mode(glue->control_otghs,
USB_MODE_DISCONNECT);
break;
@@ -355,7 +354,12 @@ static int omap2430_musb_init(struct musb *musb)
else
musb->xceiv = devm_usb_get_phy_dev(dev, 0);
- if (IS_ERR_OR_NULL(musb->xceiv)) {
+ 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;
}
@@ -393,6 +397,8 @@ static int omap2430_musb_init(struct musb *musb)
if (glue->status != OMAP_MUSB_UNKNOWN)
omap_musb_set_mailbox(glue);
+ usb_phy_init(musb->xceiv);
+
pm_runtime_put_noidle(musb->controller);
return 0;
@@ -526,10 +532,10 @@ static int omap2430_probe(struct platform_device *pdev)
}
of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
- of_property_read_u32(np, "interface_type",
+ 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, "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->has_mailbox = of_property_read_bool(np,
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 464bd23cccd..7369ba33c94 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -423,7 +423,7 @@ static void musb_do_idle(unsigned long _musb)
&& (musb->idle_timeout == 0
|| time_after(jiffies, musb->idle_timeout))) {
dev_dbg(musb->controller, "Nothing connected %s, turning off VBUS\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
}
/* FALLTHROUGH */
case OTG_STATE_A_IDLE:
@@ -478,7 +478,7 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
if (musb->is_active || ((musb->a_wait_bcon == 0)
&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->state));
del_timer(&musb_idle_timer);
last_timer = jiffies;
return;
@@ -495,7 +495,7 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
last_timer = timeout;
dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
(unsigned long)jiffies_to_msecs(timeout - jiffies));
mod_timer(&musb_idle_timer, timeout);
}
@@ -571,7 +571,7 @@ static void tusb_musb_set_vbus(struct musb *musb, int is_on)
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
dev_dbg(musb->controller, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n",
- otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->state),
musb_readb(musb->mregs, MUSB_DEVCTL),
musb_readl(tbase, TUSB_DEV_OTG_STAT),
conf, prcm);
@@ -678,13 +678,13 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
musb->is_active = 0;
}
dev_dbg(musb->controller, "vbus change, %s, otg %03x\n",
- otg_state_string(musb->xceiv->state), otg_stat);
+ usb_otg_state_string(musb->xceiv->state), otg_stat);
idle_timeout = jiffies + (1 * HZ);
schedule_work(&musb->irq_work);
} else /* A-dev state machine */ {
dev_dbg(musb->controller, "vbus change, %s, otg %03x\n",
- otg_state_string(musb->xceiv->state), otg_stat);
+ usb_otg_state_string(musb->xceiv->state), otg_stat);
switch (musb->xceiv->state) {
case OTG_STATE_A_IDLE:
@@ -733,7 +733,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
u8 devctl;
dev_dbg(musb->controller, "%s timer, %03x\n",
- otg_state_string(musb->xceiv->state), otg_stat);
+ usb_otg_state_string(musb->xceiv->state), otg_stat);
switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_VRISE:
diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c
index 13a39291376..2c80004e0a8 100644
--- a/drivers/usb/musb/ux500.c
+++ b/drivers/usb/musb/ux500.c
@@ -26,6 +26,7 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/usb/musb-ux500.h>
#include "musb_core.h"
@@ -36,6 +37,98 @@ struct ux500_glue {
};
#define glue_to_musb(g) platform_get_drvdata(g->musb)
+static void ux500_musb_set_vbus(struct musb *musb, int is_on)
+{
+ u8 devctl;
+ unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+ /* HDRC controls CPEN, but beware current surges during device
+ * connect. They can trigger transient overcurrent conditions
+ * that must be ignored.
+ */
+
+ devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+
+ if (is_on) {
+ if (musb->xceiv->state == OTG_STATE_A_IDLE) {
+ /* start the session */
+ devctl |= MUSB_DEVCTL_SESSION;
+ musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+ /*
+ * Wait for the musb to set as A device to enable the
+ * VBUS
+ */
+ while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {
+
+ if (time_after(jiffies, timeout)) {
+ dev_err(musb->controller,
+ "configured as A device timeout");
+ break;
+ }
+ }
+
+ } else {
+ musb->is_active = 1;
+ musb->xceiv->otg->default_a = 1;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
+ devctl |= MUSB_DEVCTL_SESSION;
+ MUSB_HST_MODE(musb);
+ }
+ } else {
+ musb->is_active = 0;
+
+ /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping
+ * right to B_IDLE...
+ */
+ musb->xceiv->otg->default_a = 0;
+ devctl &= ~MUSB_DEVCTL_SESSION;
+ MUSB_DEV_MODE(musb);
+ }
+ musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+
+ /*
+ * Devctl values will be updated after vbus goes below
+ * session_valid. The time taken depends on the capacitance
+ * on VBUS line. The max discharge time can be upto 1 sec
+ * as per the spec. Typically on our platform, it is 200ms
+ */
+ if (!is_on)
+ mdelay(200);
+
+ dev_dbg(musb->controller, "VBUS %s, devctl %02x\n",
+ usb_otg_state_string(musb->xceiv->state),
+ musb_readb(musb->mregs, MUSB_DEVCTL));
+}
+
+static int musb_otg_notifications(struct notifier_block *nb,
+ unsigned long event, void *unused)
+{
+ struct musb *musb = container_of(nb, struct musb, nb);
+
+ dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n",
+ event, usb_otg_state_string(musb->xceiv->state));
+
+ switch (event) {
+ case UX500_MUSB_ID:
+ dev_dbg(musb->controller, "ID GND\n");
+ ux500_musb_set_vbus(musb, 1);
+ break;
+ case UX500_MUSB_VBUS:
+ dev_dbg(musb->controller, "VBUS Connect\n");
+ break;
+ case UX500_MUSB_NONE:
+ dev_dbg(musb->controller, "VBUS Disconnect\n");
+ if (is_host_active(musb))
+ ux500_musb_set_vbus(musb, 0);
+ else
+ musb->xceiv->state = OTG_STATE_B_IDLE;
+ break;
+ default:
+ dev_dbg(musb->controller, "ID float\n");
+ return NOTIFY_DONE;
+ }
+ return NOTIFY_OK;
+}
+
static irqreturn_t ux500_musb_interrupt(int irq, void *__hci)
{
unsigned long flags;
@@ -58,12 +151,21 @@ static irqreturn_t ux500_musb_interrupt(int irq, void *__hci)
static int ux500_musb_init(struct musb *musb)
{
+ int status;
+
musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
if (IS_ERR_OR_NULL(musb->xceiv)) {
pr_err("HS USB OTG: no transceiver configured\n");
return -EPROBE_DEFER;
}
+ musb->nb.notifier_call = musb_otg_notifications;
+ status = usb_register_notifier(musb->xceiv, &musb->nb);
+ if (status < 0) {
+ dev_dbg(musb->controller, "notification register failed\n");
+ return status;
+ }
+
musb->isr = ux500_musb_interrupt;
return 0;
@@ -71,6 +173,8 @@ static int ux500_musb_init(struct musb *musb)
static int ux500_musb_exit(struct musb *musb)
{
+ usb_unregister_notifier(musb->xceiv, &musb->nb);
+
usb_put_phy(musb->xceiv);
return 0;
@@ -79,6 +183,8 @@ static int ux500_musb_exit(struct musb *musb)
static const struct musb_platform_ops ux500_ops = {
.init = ux500_musb_init,
.exit = ux500_musb_exit,
+
+ .set_vbus = ux500_musb_set_vbus,
};
static int ux500_probe(struct platform_device *pdev)
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
index 039e567dd3b..33812064114 100644
--- a/drivers/usb/musb/ux500_dma.c
+++ b/drivers/usb/musb/ux500_dma.c
@@ -1,7 +1,7 @@
/*
* drivers/usb/musb/ux500_dma.c
*
- * U8500 and U5500 DMA support code
+ * U8500 DMA support code
*
* Copyright (C) 2009 STMicroelectronics
* Copyright (C) 2011 ST-Ericsson SA
@@ -30,6 +30,7 @@
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/pfn.h>
+#include <linux/sizes.h>
#include <linux/platform_data/usb-musb-ux500.h>
#include "musb_core.h"
@@ -56,7 +57,7 @@ struct ux500_dma_controller {
};
/* Work function invoked from DMA callback to handle rx transfers. */
-void ux500_dma_callback(void *private_data)
+static void ux500_dma_callback(void *private_data)
{
struct dma_channel *channel = private_data;
struct ux500_dma_channel *ux500_channel = channel->private_data;
@@ -93,8 +94,9 @@ static bool ux500_configure_channel(struct dma_channel *channel,
struct musb *musb = ux500_channel->controller->private_data;
dev_dbg(musb->controller,
- "packet_sz=%d, mode=%d, dma_addr=0x%x, len=%d is_tx=%d\n",
- packet_sz, mode, dma_addr, len, ux500_channel->is_tx);
+ "packet_sz=%d, mode=%d, dma_addr=0x%llu, len=%d is_tx=%d\n",
+ packet_sz, mode, (unsigned long long) dma_addr,
+ len, ux500_channel->is_tx);
ux500_channel->cur_len = len;
@@ -191,7 +193,7 @@ static int ux500_dma_is_compatible(struct dma_channel *channel,
u16 maxpacket, void *buf, u32 length)
{
if ((maxpacket & 0x3) ||
- ((int)buf & 0x3) ||
+ ((unsigned long int) buf & 0x3) ||
(length < 512) ||
(length & 0x3))
return false;
@@ -372,12 +374,17 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba
controller = kzalloc(sizeof(*controller), GFP_KERNEL);
if (!controller)
- return NULL;
+ goto kzalloc_fail;
controller->private_data = musb;
/* Save physical address for DMA controller. */
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!iomem) {
+ dev_err(musb->controller, "no memory resource defined\n");
+ goto plat_get_fail;
+ }
+
controller->phy_base = (dma_addr_t) iomem->start;
controller->controller.start = ux500_dma_controller_start;
@@ -389,4 +396,9 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba
controller->controller.is_compatible = ux500_dma_is_compatible;
return &controller->controller;
+
+plat_get_fail:
+ kfree(controller);
+kzalloc_fail:
+ return NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-24 16:12:12 +0000