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usb: chipidea: add role init and destroy APIs

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- The role's init will be called at probe procedure.
- The role's destroy will be called at fail patch
at probe and driver's removal.
- The role's start/stop will be called when specific
role has started.

Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen 2013-08-14 12:44:07 +03:00 committed by Greg Kroah-Hartman
parent c10b4f033e
commit 3f124d233e
5 changed files with 54 additions and 11 deletions
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10
drivers/usb/chipidea/core.c
View file

@ -420,6 +420,12 @@ void ci_hdrc_remove_device(struct platform_device *pdev)
}
EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);
static inline void ci_role_destroy(struct ci_hdrc *ci)
{
ci_hdrc_gadget_destroy(ci);
ci_hdrc_host_destroy(ci);
}
static int ci_hdrc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -537,7 +543,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
free_irq(ci->irq, ci);
stop:
ci_role_stop(ci);
ci_role_destroy(ci);
rm_wq:
flush_workqueue(ci->wq);
destroy_workqueue(ci->wq);
@ -553,7 +559,7 @@ static int ci_hdrc_remove(struct platform_device *pdev)
flush_workqueue(ci->wq);
destroy_workqueue(ci->wq);
free_irq(ci->irq, ci);
ci_role_stop(ci);
ci_role_destroy(ci);
return 0;
}

7
drivers/usb/chipidea/host.c
View file

@ -106,6 +106,13 @@ static void host_stop(struct ci_hdrc *ci)
regulator_disable(ci->platdata->reg_vbus);
}
void ci_hdrc_host_destroy(struct ci_hdrc *ci)
{
if (ci->role == CI_ROLE_HOST)
host_stop(ci);
}
int ci_hdrc_host_init(struct ci_hdrc *ci)
{
struct ci_role_driver *rdrv;

6
drivers/usb/chipidea/host.h
View file

@ -4,6 +4,7 @@
#ifdef CONFIG_USB_CHIPIDEA_HOST
int ci_hdrc_host_init(struct ci_hdrc *ci);
void ci_hdrc_host_destroy(struct ci_hdrc *ci);
#else
@ -12,6 +13,11 @@ static inline int ci_hdrc_host_init(struct ci_hdrc *ci)
return -ENXIO;
}
static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci)
{
}
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */

36
drivers/usb/chipidea/udc.c
View file

@ -27,6 +27,7 @@
#include "udc.h"
#include "bits.h"
#include "debug.h"
#include "otg.h"
/* control endpoint description */
static const struct usb_endpoint_descriptor
@ -1844,13 +1845,13 @@ static int udc_start(struct ci_hdrc *ci)
}
/**
* udc_remove: parent remove must call this to remove UDC
* ci_hdrc_gadget_destroy: parent remove must call this to remove UDC
*
* No interrupts active, the IRQ has been released
*/
static void udc_stop(struct ci_hdrc *ci)
void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
{
if (ci == NULL)
if (!ci->roles[CI_ROLE_GADGET])
return;
usb_del_gadget_udc(&ci->gadget);
@ -1865,15 +1866,32 @@ static void udc_stop(struct ci_hdrc *ci)
if (ci->global_phy)
usb_put_phy(ci->transceiver);
}
/* my kobject is dynamic, I swear! */
memset(&ci->gadget, 0, sizeof(ci->gadget));
}
static int udc_id_switch_for_device(struct ci_hdrc *ci)
{
if (ci->is_otg) {
ci_clear_otg_interrupt(ci, OTGSC_BSVIS);
ci_enable_otg_interrupt(ci, OTGSC_BSVIE);
}
return 0;
}
static void udc_id_switch_for_host(struct ci_hdrc *ci)
{
if (ci->is_otg) {
/* host doesn't care B_SESSION_VALID event */
ci_clear_otg_interrupt(ci, OTGSC_BSVIS);
ci_disable_otg_interrupt(ci, OTGSC_BSVIE);
}
}
/**
* ci_hdrc_gadget_init - initialize device related bits
* ci: the controller
*
* This function enables the gadget role, if the device is "device capable".
* This function initializes the gadget, if the device is "device capable".
*/
int ci_hdrc_gadget_init(struct ci_hdrc *ci)
{
@ -1886,11 +1904,11 @@ int ci_hdrc_gadget_init(struct ci_hdrc *ci)
if (!rdrv)
return -ENOMEM;
rdrv->start = udc_start;
rdrv->stop = udc_stop;
rdrv->start = udc_id_switch_for_device;
rdrv->stop = udc_id_switch_for_host;
rdrv->irq = udc_irq;
rdrv->name = "gadget";
ci->roles[CI_ROLE_GADGET] = rdrv;
return 0;
return udc_start(ci);
}

6
drivers/usb/chipidea/udc.h
View file

@ -84,6 +84,7 @@ struct ci_hw_req {
#ifdef CONFIG_USB_CHIPIDEA_UDC
int ci_hdrc_gadget_init(struct ci_hdrc *ci);
void ci_hdrc_gadget_destroy(struct ci_hdrc *ci);
#else
@ -92,6 +93,11 @@ static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci)
return -ENXIO;
}
static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
{
}
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */