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path: root/drivers/usb/musb/davinci.c
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Diffstat (limited to 'drivers/usb/musb/davinci.c')
-rw-r--r--drivers/usb/musb/davinci.c67
1 files changed, 35 insertions, 32 deletions
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 472c8b42d38b..606bfd00cde6 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -33,6 +33,7 @@
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/usb/nop-usb-xceiv.h>
#include <mach/cputype.h>
#include <mach/hardware.h>
@@ -115,8 +116,7 @@ static void davinci_musb_enable(struct musb *musb)
dma_off = 0;
/* force a DRVVBUS irq so we can start polling for ID change */
- if (is_otg_enabled(musb))
- musb_writel(musb->ctrl_base, DAVINCI_USB_INT_SET_REG,
+ musb_writel(musb->ctrl_base, DAVINCI_USB_INT_SET_REG,
DAVINCI_INTR_DRVVBUS << DAVINCI_USB_USBINT_SHIFT);
}
@@ -234,10 +234,8 @@ static void otg_timer(unsigned long _musb)
MUSB_INTR_VBUSERROR << DAVINCI_USB_USBINT_SHIFT);
break;
case OTG_STATE_B_IDLE:
- if (!is_peripheral_enabled(musb))
- break;
-
- /* There's no ID-changed IRQ, so we have no good way to tell
+ /*
+ * There's no ID-changed IRQ, so we have no good way to tell
* when to switch to the A-Default state machine (by setting
* the DEVCTL.SESSION flag).
*
@@ -315,8 +313,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci)
u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
int err = musb->int_usb & MUSB_INTR_VBUSERROR;
- err = is_host_enabled(musb)
- && (musb->int_usb & MUSB_INTR_VBUSERROR);
+ err = musb->int_usb & MUSB_INTR_VBUSERROR;
if (err) {
/* The Mentor core doesn't debounce VBUS as needed
* to cope with device connect current spikes. This
@@ -332,7 +329,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci)
musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
WARNING("VBUS error workaround (delay coming)\n");
- } else if (is_host_enabled(musb) && drvvbus) {
+ } else if (drvvbus) {
MUSB_HST_MODE(musb);
otg->default_a = 1;
musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
@@ -365,8 +362,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci)
musb_writel(tibase, DAVINCI_USB_EOI_REG, 0);
/* poll for ID change */
- if (is_otg_enabled(musb)
- && musb->xceiv->state == OTG_STATE_B_IDLE)
+ if (musb->xceiv->state == OTG_STATE_B_IDLE)
mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
spin_unlock_irqrestore(&musb->lock, flags);
@@ -397,8 +393,7 @@ static int davinci_musb_init(struct musb *musb)
if (revision == 0)
goto fail;
- if (is_host_enabled(musb))
- setup_timer(&otg_workaround, otg_timer, (unsigned long) musb);
+ setup_timer(&otg_workaround, otg_timer, (unsigned long) musb);
davinci_musb_source_power(musb, 0, 1);
@@ -419,12 +414,7 @@ static int davinci_musb_init(struct musb *musb)
if (cpu_is_davinci_dm355()) {
u32 deepsleep = __raw_readl(DM355_DEEPSLEEP);
- if (is_host_enabled(musb)) {
- deepsleep &= ~DRVVBUS_OVERRIDE;
- } else {
- deepsleep &= ~DRVVBUS_FORCE;
- deepsleep |= DRVVBUS_OVERRIDE;
- }
+ deepsleep &= ~DRVVBUS_FORCE;
__raw_writel(deepsleep, DM355_DEEPSLEEP);
}
@@ -453,8 +443,7 @@ unregister:
static int davinci_musb_exit(struct musb *musb)
{
- if (is_host_enabled(musb))
- del_timer_sync(&otg_workaround);
+ del_timer_sync(&otg_workaround);
/* force VBUS off */
if (cpu_is_davinci_dm355()) {
@@ -468,7 +457,7 @@ static int davinci_musb_exit(struct musb *musb)
davinci_musb_source_power(musb, 0 /*off*/, 1);
/* delay, to avoid problems with module reload */
- if (is_host_enabled(musb) && musb->xceiv->otg->default_a) {
+ if (musb->xceiv->otg->default_a) {
int maxdelay = 30;
u8 devctl, warn = 0;
@@ -523,6 +512,7 @@ static int __devinit davinci_probe(struct platform_device *pdev)
struct clk *clk;
int ret = -ENOMEM;
+ int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -530,25 +520,34 @@ static int __devinit davinci_probe(struct platform_device *pdev)
goto err0;
}
- musb = platform_device_alloc("musb-hdrc", -1);
+ /* get the musb id */
+ musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
+ if (musbid < 0) {
+ dev_err(&pdev->dev, "failed to allocate musb id\n");
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ musb = platform_device_alloc("musb-hdrc", musbid);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
+ goto err2;
}
clk = clk_get(&pdev->dev, "usb");
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
ret = PTR_ERR(clk);
- goto err2;
+ goto err3;
}
ret = clk_enable(clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable clock\n");
- goto err3;
+ goto err4;
}
+ musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &davinci_dmamask;
musb->dev.coherent_dma_mask = davinci_dmamask;
@@ -565,32 +564,35 @@ static int __devinit davinci_probe(struct platform_device *pdev)
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "failed to add resources\n");
- goto err4;
+ goto err5;
}
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
if (ret) {
dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err4;
+ goto err5;
}
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
- goto err4;
+ goto err5;
}
return 0;
-err4:
+err5:
clk_disable(clk);
-err3:
+err4:
clk_put(clk);
-err2:
+err3:
platform_device_put(musb);
+err2:
+ musb_put_id(&pdev->dev, musbid);
+
err1:
kfree(glue);
@@ -602,6 +604,7 @@ static int __devexit davinci_remove(struct platform_device *pdev)
{
struct davinci_glue *glue = platform_get_drvdata(pdev);
+ musb_put_id(&pdev->dev, glue->musb->id);
platform_device_del(glue->musb);
platform_device_put(glue->musb);
clk_disable(glue->clk);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.