* [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC
@ 2013-10-10 18:48 George Cherian
2013-10-15 4:40 ` George Cherian
0 siblings, 1 reply; 4+ messages in thread
From: George Cherian @ 2013-10-10 18:48 UTC (permalink / raw)
To: myungjoo.ham, cw00.choi
Cc: kishon, ldewangan, linux-kernel, linux-usb, George Cherian
Always cross check with the ID state and the source of interrupt.
Also add a case in which ID Source is ID_GND but LATCH state is set
wrongly. This uses the previous Link stat to determine the new state.
Signed-off-by: George Cherian <george.cherian@ti.com>
---
drivers/extcon/extcon-palmas.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 6e83e9a..2aea4bc 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -78,20 +78,24 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
{
- unsigned int set;
+ unsigned int set, id_src;
struct palmas_usb *palmas_usb = _palmas_usb;
palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_SET, &set);
+ palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
+ PALMAS_USB_ID_INT_SRC, &id_src);
- if (set & PALMAS_USB_ID_INT_SRC_ID_GND) {
+ if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
+ (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
- } else if (set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) {
+ } else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
+ (id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
@@ -103,6 +107,11 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
+ } else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
+ (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
+ palmas_usb->linkstat = PALMAS_USB_STATE_ID;
+ extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
+ dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
}
return IRQ_HANDLED;
--
1.8.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC
2013-10-10 18:48 [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC George Cherian
@ 2013-10-15 4:40 ` George Cherian
2013-10-21 11:21 ` Laxman Dewangan
2013-10-21 22:55 ` Chanwoo Choi
0 siblings, 2 replies; 4+ messages in thread
From: George Cherian @ 2013-10-15 4:40 UTC (permalink / raw)
To: George Cherian
Cc: myungjoo.ham, cw00.choi, kishon, ldewangan, linux-kernel,
linux-usb
Laxman/Chanwoo/Kishon,
Any comments on this!!
Regards
-George
On 10/11/2013 12:18 AM, George Cherian wrote:
> Always cross check with the ID state and the source of interrupt.
> Also add a case in which ID Source is ID_GND but LATCH state is set
> wrongly. This uses the previous Link stat to determine the new state.
>
> Signed-off-by: George Cherian <george.cherian@ti.com>
> ---
> drivers/extcon/extcon-palmas.c | 15 ++++++++++++---
> 1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
> index 6e83e9a..2aea4bc 100644
> --- a/drivers/extcon/extcon-palmas.c
> +++ b/drivers/extcon/extcon-palmas.c
> @@ -78,20 +78,24 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
>
> static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
> {
> - unsigned int set;
> + unsigned int set, id_src;
> struct palmas_usb *palmas_usb = _palmas_usb;
>
> palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
> PALMAS_USB_ID_INT_LATCH_SET, &set);
> + palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
> + PALMAS_USB_ID_INT_SRC, &id_src);
>
> - if (set & PALMAS_USB_ID_INT_SRC_ID_GND) {
> + if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
> + (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
> palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
> PALMAS_USB_ID_INT_LATCH_CLR,
> PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
> palmas_usb->linkstat = PALMAS_USB_STATE_ID;
> extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
> dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
> - } else if (set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) {
> + } else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
> + (id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
> palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
> PALMAS_USB_ID_INT_LATCH_CLR,
> PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
> @@ -103,6 +107,11 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
> palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
> extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
> dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
> + } else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
> + (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
> + palmas_usb->linkstat = PALMAS_USB_STATE_ID;
> + extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
> + dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
> }
>
> return IRQ_HANDLED;
--
-George
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC
2013-10-15 4:40 ` George Cherian
@ 2013-10-21 11:21 ` Laxman Dewangan
2013-10-21 22:55 ` Chanwoo Choi
1 sibling, 0 replies; 4+ messages in thread
From: Laxman Dewangan @ 2013-10-21 11:21 UTC (permalink / raw)
To: George Cherian
Cc: myungjoo.ham@samsung.com, cw00.choi@samsung.com, kishon@ti.com,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
On Tuesday 15 October 2013 10:10 AM, George Cherian wrote:
> Laxman/Chanwoo/Kishon,
>
> Any comments on this!!
> Regards
> -George
> On 10/11/2013 12:18 AM, George Cherian wrote:
>> Always cross check with the ID state and the source of interrupt.
>> Also add a case in which ID Source is ID_GND but LATCH state is set
>> wrongly. This uses the previous Link stat to determine the new state.
>>
Looks good to me.
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC
2013-10-15 4:40 ` George Cherian
2013-10-21 11:21 ` Laxman Dewangan
@ 2013-10-21 22:55 ` Chanwoo Choi
1 sibling, 0 replies; 4+ messages in thread
From: Chanwoo Choi @ 2013-10-21 22:55 UTC (permalink / raw)
To: George Cherian; +Cc: myungjoo.ham, kishon, ldewangan, linux-kernel, linux-usb
Hi George,
On 10/15/2013 01:40 PM, George Cherian wrote:
> Laxman/Chanwoo/Kishon,
>
> Any comments on this!!
> Regards
> -George
> On 10/11/2013 12:18 AM, George Cherian wrote:
>> Always cross check with the ID state and the source of interrupt.
>> Also add a case in which ID Source is ID_GND but LATCH state is set
>> wrongly. This uses the previous Link stat to determine the new state.
>>
>> Signed-off-by: George Cherian <george.cherian@ti.com>
>> ---
>> drivers/extcon/extcon-palmas.c | 15 ++++++++++++---
>> 1 file changed, 12 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>> index 6e83e9a..2aea4bc 100644
>> --- a/drivers/extcon/extcon-palmas.c
>> +++ b/drivers/extcon/extcon-palmas.c
>> @@ -78,20 +78,24 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
>> static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
>> {
>> - unsigned int set;
>> + unsigned int set, id_src;
>> struct palmas_usb *palmas_usb = _palmas_usb;
>> palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
>> PALMAS_USB_ID_INT_LATCH_SET, &set);
>> + palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
>> + PALMAS_USB_ID_INT_SRC, &id_src);
>> - if (set & PALMAS_USB_ID_INT_SRC_ID_GND) {
>> + if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
>> + (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
>> palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
>> PALMAS_USB_ID_INT_LATCH_CLR,
>> PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
>> palmas_usb->linkstat = PALMAS_USB_STATE_ID;
>> extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
>> dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
>> - } else if (set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) {
>> + } else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
>> + (id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
>> palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
>> PALMAS_USB_ID_INT_LATCH_CLR,
>> PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
>> @@ -103,6 +107,11 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
>> palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
>> extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
>> dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
>> + } else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
>> + (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
>> + palmas_usb->linkstat = PALMAS_USB_STATE_ID;
>> + extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
>> + dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
>> }
>> return IRQ_HANDLED;
>
>
Applied it on next branch.
Thanks.
Chanwoo Choi
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-10-10 18:48 [PATCH] extcon: palmas: Handle ID interrupt properly using USB_ID_INT_SRC George Cherian
2013-10-15 4:40 ` George Cherian
2013-10-21 11:21 ` Laxman Dewangan
2013-10-21 22:55 ` Chanwoo Choi
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