diff mbox

[v7,7/9] usb: musb: omap2430: use the new generic PHY framework

Message ID 1371113039-5784-8-git-send-email-kishon@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kishon Vijay Abraham I June 13, 2013, 8:43 a.m. UTC
Use the generic PHY framework API to get the PHY. The usb_phy_set_resume
and usb_phy_set_suspend is replaced with power_on/get_sync and
power_off/put_sync to align with the new PHY framework.

musb->xceiv can't be removed as of now because musb core uses xceiv.state and
xceiv.otg. Once there is a separate state machine to handle otg, these can be
moved out of xceiv and then we can start using the generic PHY framework.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 drivers/usb/musb/musb_core.c |    1 +
 drivers/usb/musb/musb_core.h |    3 +++
 drivers/usb/musb/omap2430.c  |   29 +++++++++++++++++++++--------
 3 files changed, 25 insertions(+), 8 deletions(-)

Comments

Felipe Balbi June 18, 2013, 9:47 a.m. UTC | #1
Hi,

On Thu, Jun 13, 2013 at 02:13:57PM +0530, Kishon Vijay Abraham I wrote:
> Use the generic PHY framework API to get the PHY. The usb_phy_set_resume
> and usb_phy_set_suspend is replaced with power_on/get_sync and
> power_off/put_sync to align with the new PHY framework.
> 
> musb->xceiv can't be removed as of now because musb core uses xceiv.state and
> xceiv.otg. Once there is a separate state machine to handle otg, these can be
> moved out of xceiv and then we can start using the generic PHY framework.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> ---
>  drivers/usb/musb/musb_core.c |    1 +
>  drivers/usb/musb/musb_core.h |    3 +++
>  drivers/usb/musb/omap2430.c  |   29 +++++++++++++++++++++--------
>  3 files changed, 25 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
> index 37a261a..f732bcc 100644
> --- a/drivers/usb/musb/musb_core.c
> +++ b/drivers/usb/musb/musb_core.c
> @@ -1864,6 +1864,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
>  	musb->board_set_power = plat->set_power;
>  	musb->min_power = plat->min_power;
>  	musb->ops = plat->platform_ops;
> +	musb->phy_label = plat->phy_label;
>  
>  	/* The musb_platform_init() call:
>  	 *   - adjusts musb->mregs
> diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
> index 7fb4819..498ae21 100644
> --- a/drivers/usb/musb/musb_core.h
> +++ b/drivers/usb/musb/musb_core.h
> @@ -46,6 +46,7 @@
>  #include <linux/usb.h>
>  #include <linux/usb/otg.h>
>  #include <linux/usb/musb.h>
> +#include <linux/phy/phy.h>
>  
>  struct musb;
>  struct musb_hw_ep;
> @@ -357,6 +358,7 @@ struct musb {
>  	u16			int_tx;
>  
>  	struct usb_phy		*xceiv;
> +	struct phy		*phy;
>  
>  	int nIrq;
>  	unsigned		irq_wake:1;
> @@ -434,6 +436,7 @@ struct musb {
>  	unsigned                double_buffer_not_ok:1;
>  
>  	struct musb_hdrc_config	*config;
> +	const char		*phy_label;
>  
>  #ifdef MUSB_CONFIG_PROC_FS
>  	struct proc_dir_entry *proc_entry;
> diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
> index 628b93f..c62a004 100644
> --- a/drivers/usb/musb/omap2430.c
> +++ b/drivers/usb/musb/omap2430.c
> @@ -348,14 +348,24 @@ static int omap2430_musb_init(struct musb *musb)
>  	 * up through ULPI.  TWL4030-family PMICs include one,
>  	 * which needs a driver, drivers aren't always needed.
>  	 */
> -	if (dev->parent->of_node)
> +	if (dev->parent->of_node) {
> +		musb->phy = devm_phy_get(dev->parent, "usb2-phy");
> +
> +		/* We can't totally remove musb->xceiv as of now because
> +		 * musb core uses xceiv.state and xceiv.otg. Once we have
> +		 * a separate state machine to handle otg, these can be moved
> +		 * out of xceiv and then we can start using the generic PHY
> +		 * framework
> +		 */
>  		musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
>  		    "usb-phy", 0);
> -	else
> +	} else {
>  		musb->xceiv = devm_usb_get_phy_dev(dev, 0);
> +		musb->phy = devm_phy_get(dev, musb->phy_label);
> +	}
>  
> -	if (IS_ERR(musb->xceiv)) {
> -		status = PTR_ERR(musb->xceiv);
> +	if (IS_ERR(musb->xceiv) || IS_ERR(musb->phy)) {
> +		status = PTR_ERR(musb->xceiv) | PTR_ERR(musb->phy);
>  
>  		if (status == -ENXIO)
>  			return status;
> @@ -397,9 +407,10 @@ static int omap2430_musb_init(struct musb *musb)
>  	if (glue->status != OMAP_MUSB_UNKNOWN)
>  		omap_musb_set_mailbox(glue);
>  
> -	usb_phy_init(musb->xceiv);
> +	phy_init(musb->phy);
>  
>  	pm_runtime_put_noidle(musb->controller);
> +	phy_pm_runtime_put(musb->phy);

see, weird unbalanced calls :-)

Make it all explicit:

phy_pm_runtime_get_sync(phy);
phy_init(phy);
phy_pm_runtime_put(phy);
Kishon Vijay Abraham I June 24, 2013, 5:31 a.m. UTC | #2
Hi,

On Tuesday 18 June 2013 03:17 PM, Felipe Balbi wrote:
> Hi,
>
> On Thu, Jun 13, 2013 at 02:13:57PM +0530, Kishon Vijay Abraham I wrote:
>> Use the generic PHY framework API to get the PHY. The usb_phy_set_resume
>> and usb_phy_set_suspend is replaced with power_on/get_sync and
>> power_off/put_sync to align with the new PHY framework.
>>
>> musb->xceiv can't be removed as of now because musb core uses xceiv.state and
>> xceiv.otg. Once there is a separate state machine to handle otg, these can be
>> moved out of xceiv and then we can start using the generic PHY framework.
>>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
>> ---
>>   drivers/usb/musb/musb_core.c |    1 +
>>   drivers/usb/musb/musb_core.h |    3 +++
>>   drivers/usb/musb/omap2430.c  |   29 +++++++++++++++++++++--------
>>   3 files changed, 25 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
>> index 37a261a..f732bcc 100644
>> --- a/drivers/usb/musb/musb_core.c
>> +++ b/drivers/usb/musb/musb_core.c
>> @@ -1864,6 +1864,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
>>   	musb->board_set_power = plat->set_power;
>>   	musb->min_power = plat->min_power;
>>   	musb->ops = plat->platform_ops;
>> +	musb->phy_label = plat->phy_label;
>>
>>   	/* The musb_platform_init() call:
>>   	 *   - adjusts musb->mregs
>> diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
>> index 7fb4819..498ae21 100644
>> --- a/drivers/usb/musb/musb_core.h
>> +++ b/drivers/usb/musb/musb_core.h
>> @@ -46,6 +46,7 @@
>>   #include <linux/usb.h>
>>   #include <linux/usb/otg.h>
>>   #include <linux/usb/musb.h>
>> +#include <linux/phy/phy.h>
>>
>>   struct musb;
>>   struct musb_hw_ep;
>> @@ -357,6 +358,7 @@ struct musb {
>>   	u16			int_tx;
>>
>>   	struct usb_phy		*xceiv;
>> +	struct phy		*phy;
>>
>>   	int nIrq;
>>   	unsigned		irq_wake:1;
>> @@ -434,6 +436,7 @@ struct musb {
>>   	unsigned                double_buffer_not_ok:1;
>>
>>   	struct musb_hdrc_config	*config;
>> +	const char		*phy_label;
>>
>>   #ifdef MUSB_CONFIG_PROC_FS
>>   	struct proc_dir_entry *proc_entry;
>> diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
>> index 628b93f..c62a004 100644
>> --- a/drivers/usb/musb/omap2430.c
>> +++ b/drivers/usb/musb/omap2430.c
>> @@ -348,14 +348,24 @@ static int omap2430_musb_init(struct musb *musb)
>>   	 * up through ULPI.  TWL4030-family PMICs include one,
>>   	 * which needs a driver, drivers aren't always needed.
>>   	 */
>> -	if (dev->parent->of_node)
>> +	if (dev->parent->of_node) {
>> +		musb->phy = devm_phy_get(dev->parent, "usb2-phy");
>> +
>> +		/* We can't totally remove musb->xceiv as of now because
>> +		 * musb core uses xceiv.state and xceiv.otg. Once we have
>> +		 * a separate state machine to handle otg, these can be moved
>> +		 * out of xceiv and then we can start using the generic PHY
>> +		 * framework
>> +		 */
>>   		musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
>>   		    "usb-phy", 0);
>> -	else
>> +	} else {
>>   		musb->xceiv = devm_usb_get_phy_dev(dev, 0);
>> +		musb->phy = devm_phy_get(dev, musb->phy_label);
>> +	}
>>
>> -	if (IS_ERR(musb->xceiv)) {
>> -		status = PTR_ERR(musb->xceiv);
>> +	if (IS_ERR(musb->xceiv) || IS_ERR(musb->phy)) {
>> +		status = PTR_ERR(musb->xceiv) | PTR_ERR(musb->phy);
>>
>>   		if (status == -ENXIO)
>>   			return status;
>> @@ -397,9 +407,10 @@ static int omap2430_musb_init(struct musb *musb)
>>   	if (glue->status != OMAP_MUSB_UNKNOWN)
>>   		omap_musb_set_mailbox(glue);
>>
>> -	usb_phy_init(musb->xceiv);
>> +	phy_init(musb->phy);
>>
>>   	pm_runtime_put_noidle(musb->controller);
>> +	phy_pm_runtime_put(musb->phy);
>
> see, weird unbalanced calls :-)
>
> Make it all explicit:
>
> phy_pm_runtime_get_sync(phy);
> phy_init(phy);
> phy_pm_runtime_put(phy);

I think then it makes sense to drop get_sync from phy_init()?

Thanks
Kishon
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Felipe Balbi June 24, 2013, 6:37 a.m. UTC | #3
Hi,

On Mon, Jun 24, 2013 at 11:01:56AM +0530, Kishon Vijay Abraham I wrote:
> >>@@ -397,9 +407,10 @@ static int omap2430_musb_init(struct musb *musb)
> >>  	if (glue->status != OMAP_MUSB_UNKNOWN)
> >>  		omap_musb_set_mailbox(glue);
> >>
> >>-	usb_phy_init(musb->xceiv);
> >>+	phy_init(musb->phy);
> >>
> >>  	pm_runtime_put_noidle(musb->controller);
> >>+	phy_pm_runtime_put(musb->phy);
> >
> >see, weird unbalanced calls :-)
> >
> >Make it all explicit:
> >
> >phy_pm_runtime_get_sync(phy);
> >phy_init(phy);
> >phy_pm_runtime_put(phy);
> 
> I think then it makes sense to drop get_sync from phy_init()?

maybe not, you don't know if the phy has already autosuspended or not.
diff mbox

Patch

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 37a261a..f732bcc 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1864,6 +1864,7 @@  musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 	musb->board_set_power = plat->set_power;
 	musb->min_power = plat->min_power;
 	musb->ops = plat->platform_ops;
+	musb->phy_label = plat->phy_label;
 
 	/* The musb_platform_init() call:
 	 *   - adjusts musb->mregs
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 7fb4819..498ae21 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -46,6 +46,7 @@ 
 #include <linux/usb.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/musb.h>
+#include <linux/phy/phy.h>
 
 struct musb;
 struct musb_hw_ep;
@@ -357,6 +358,7 @@  struct musb {
 	u16			int_tx;
 
 	struct usb_phy		*xceiv;
+	struct phy		*phy;
 
 	int nIrq;
 	unsigned		irq_wake:1;
@@ -434,6 +436,7 @@  struct musb {
 	unsigned                double_buffer_not_ok:1;
 
 	struct musb_hdrc_config	*config;
+	const char		*phy_label;
 
 #ifdef MUSB_CONFIG_PROC_FS
 	struct proc_dir_entry *proc_entry;
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 628b93f..c62a004 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -348,14 +348,24 @@  static int omap2430_musb_init(struct musb *musb)
 	 * up through ULPI.  TWL4030-family PMICs include one,
 	 * which needs a driver, drivers aren't always needed.
 	 */
-	if (dev->parent->of_node)
+	if (dev->parent->of_node) {
+		musb->phy = devm_phy_get(dev->parent, "usb2-phy");
+
+		/* We can't totally remove musb->xceiv as of now because
+		 * musb core uses xceiv.state and xceiv.otg. Once we have
+		 * a separate state machine to handle otg, these can be moved
+		 * out of xceiv and then we can start using the generic PHY
+		 * framework
+		 */
 		musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
 		    "usb-phy", 0);
-	else
+	} else {
 		musb->xceiv = devm_usb_get_phy_dev(dev, 0);
+		musb->phy = devm_phy_get(dev, musb->phy_label);
+	}
 
-	if (IS_ERR(musb->xceiv)) {
-		status = PTR_ERR(musb->xceiv);
+	if (IS_ERR(musb->xceiv) || IS_ERR(musb->phy)) {
+		status = PTR_ERR(musb->xceiv) | PTR_ERR(musb->phy);
 
 		if (status == -ENXIO)
 			return status;
@@ -397,9 +407,10 @@  static int omap2430_musb_init(struct musb *musb)
 	if (glue->status != OMAP_MUSB_UNKNOWN)
 		omap_musb_set_mailbox(glue);
 
-	usb_phy_init(musb->xceiv);
+	phy_init(musb->phy);
 
 	pm_runtime_put_noidle(musb->controller);
+	phy_pm_runtime_put(musb->phy);
 	return 0;
 
 err1:
@@ -460,6 +471,7 @@  static int omap2430_musb_exit(struct musb *musb)
 	del_timer_sync(&musb_idle_timer);
 
 	omap2430_low_level_exit(musb);
+	phy_exit(musb->phy);
 
 	return 0;
 }
@@ -619,7 +631,8 @@  static int omap2430_runtime_suspend(struct device *dev)
 				OTG_INTERFSEL);
 
 		omap2430_low_level_exit(musb);
-		usb_phy_set_suspend(musb->xceiv, 1);
+		phy_power_off(musb->phy);
+		phy_pm_runtime_put(musb->phy);
 	}
 
 	return 0;
@@ -634,8 +647,8 @@  static int omap2430_runtime_resume(struct device *dev)
 		omap2430_low_level_init(musb);
 		musb_writel(musb->mregs, OTG_INTERFSEL,
 				musb->context.otg_interfsel);
-
-		usb_phy_set_suspend(musb->xceiv, 0);
+		phy_pm_runtime_get_sync(musb->phy);
+		phy_power_on(musb->phy);
 	}
 
 	return 0;