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Groups > linux.kernel > #1541964 > unrolled thread

[PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

Started byPali Rohár <pali.rohar@gmail.com>
First post2016-12-14 16:00 +0100
Last post2016-12-19 21:50 +0100
Articles 11 — 4 participants

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Contents

  [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode Pali Rohár <pali.rohar@gmail.com> - 2016-12-14 16:00 +0100
    Re: [PATCH] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Tony Lindgren <tony@atomide.com> - 2016-12-14 16:40 +0100
      Re: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode Pali Rohár <pali.rohar@gmail.com> - 2016-12-14 16:50 +0100
        Re: [PATCH] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Tony Lindgren <tony@atomide.com> - 2016-12-14 17:00 +0100
    Re: [PATCH] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-12-14 18:00 +0100
    [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode Pali Rohár <pali.rohar@gmail.com> - 2016-12-14 20:30 +0100
      Re: [PATCH] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Bin Liu <b-liu@ti.com> - 2016-12-16 05:10 +0100
        [PATCH v2] usb: musb: debugfs: allow forcing host mode together with speed in testmode Pali Rohár <pali.rohar@gmail.com> - 2016-12-18 01:10 +0100
          Re: [PATCH v2] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Bin Liu <b-liu@ti.com> - 2016-12-19 16:20 +0100
          [PATCH v3] usb: musb: debugfs: allow forcing host mode together with speed in testmode Pali Rohár <pali.rohar@gmail.com> - 2016-12-19 16:30 +0100
            Re: [PATCH v3] usb: musb: debugfs: allow forcing host mode together  with speed in testmode Bin Liu <b-liu@ti.com> - 2016-12-19 21:50 +0100

#1541964 — [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromPali Rohár <pali.rohar@gmail.com>
Date2016-12-14 16:00 +0100
Subject[PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sOjcd-7GR-7@gated-at.bofh.it>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
 drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
index 9b22d94..62c13a2 100644
--- a/drivers/usb/musb/musb_debugfs.c
+++ b/drivers/usb/musb/musb_debugfs.c
@@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
 
 	test = musb_readb(musb->mregs, MUSB_TESTMODE);
 
-	if (test & MUSB_TEST_FORCE_HOST)
+	if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
+		seq_printf(s, "force host full-speed\n");
+
+	else if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
+		seq_printf(s, "force host high-speed\n");
+
+	else if (test & MUSB_TEST_FORCE_HOST)
 		seq_printf(s, "force host\n");
 
-	if (test & MUSB_TEST_FIFO_ACCESS)
+	else if (test & MUSB_TEST_FIFO_ACCESS)
 		seq_printf(s, "fifo access\n");
 
-	if (test & MUSB_TEST_FORCE_FS)
+	else if (test & MUSB_TEST_FORCE_FS)
 		seq_printf(s, "force full-speed\n");
 
-	if (test & MUSB_TEST_FORCE_HS)
+	else if (test & MUSB_TEST_FORCE_HS)
 		seq_printf(s, "force high-speed\n");
 
-	if (test & MUSB_TEST_PACKET)
+	else if (test & MUSB_TEST_PACKET)
 		seq_printf(s, "test packet\n");
 
-	if (test & MUSB_TEST_K)
+	else if (test & MUSB_TEST_K)
 		seq_printf(s, "test K\n");
 
-	if (test & MUSB_TEST_J)
+	else if (test & MUSB_TEST_J)
 		seq_printf(s, "test J\n");
 
-	if (test & MUSB_TEST_SE0_NAK)
+	else if (test & MUSB_TEST_SE0_NAK)
 		seq_printf(s, "test SE0 NAK\n");
 
 	return 0;
@@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
 	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;
 
-	if (strstarts(buf, "force host"))
+	if (strstarts(buf, "force host full-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS;
+
+	else if (strstarts(buf, "force host high-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS;
+
+	else if (strstarts(buf, "force host"))
 		test = MUSB_TEST_FORCE_HOST;
 
-	if (strstarts(buf, "fifo access"))
+	else if (strstarts(buf, "fifo access"))
 		test = MUSB_TEST_FIFO_ACCESS;
 
-	if (strstarts(buf, "force full-speed"))
+	else if (strstarts(buf, "force full-speed"))
 		test = MUSB_TEST_FORCE_FS;
 
-	if (strstarts(buf, "force high-speed"))
+	else if (strstarts(buf, "force high-speed"))
 		test = MUSB_TEST_FORCE_HS;
 
-	if (strstarts(buf, "test packet")) {
+	else if (strstarts(buf, "test packet")) {
 		test = MUSB_TEST_PACKET;
 		musb_load_testpacket(musb);
 	}
 
-	if (strstarts(buf, "test K"))
+	else if (strstarts(buf, "test K"))
 		test = MUSB_TEST_K;
 
-	if (strstarts(buf, "test J"))
+	else if (strstarts(buf, "test J"))
 		test = MUSB_TEST_J;
 
-	if (strstarts(buf, "test SE0 NAK"))
+	else if (strstarts(buf, "test SE0 NAK"))
 		test = MUSB_TEST_SE0_NAK;
 
 	musb_writeb(musb->mregs, MUSB_TESTMODE, test);
-- 
1.7.9.5

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#1541987 — Re: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromTony Lindgren <tony@atomide.com>
Date2016-12-14 16:40 +0100
SubjectRe: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sOjOV-88T-21@gated-at.bofh.it>
In reply to#1541964
* Pali Rohár <pali.rohar@gmail.com> [161214 06:48]:

We need this because .... and this allows debugging problems related to
...?

Regards,

Tony

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#1541993

FromPali Rohár <pali.rohar@gmail.com>
Date2016-12-14 16:50 +0100
Message-ID<sOjYB-8ce-3@gated-at.bofh.it>
In reply to#1541987

[Multipart message — attachments visible in raw view] — view raw

On Wednesday 14 December 2016 16:34:31 Tony Lindgren wrote:
> * Pali Rohár <pali.rohar@gmail.com> [161214 06:48]:
> 
> We need this because .... and this allows debugging problems related
> to ...?

Hi! We have already discussion about it, search for older email with 
Message-Id: <201601231357.32629@pali>

After that in June, Bin wanted from me to resend patch with changed 
subject... but after that I forgot. Now I resent it.

-- 
Pali Rohár
pali.rohar@gmail.com

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#1541999 — Re: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromTony Lindgren <tony@atomide.com>
Date2016-12-14 17:00 +0100
SubjectRe: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sOk8i-8fp-5@gated-at.bofh.it>
In reply to#1541993
* Pali Rohár <pali.rohar@gmail.com> [161214 07:40]:
> On Wednesday 14 December 2016 16:34:31 Tony Lindgren wrote:
> > * Pali Rohár <pali.rohar@gmail.com> [161214 06:48]:
> > 
> > We need this because .... and this allows debugging problems related
> > to ...?
> 
> Hi! We have already discussion about it, search for older email with 
> Message-Id: <201601231357.32629@pali>
> 
> After that in June, Bin wanted from me to resend patch with changed 
> subject... but after that I forgot. Now I resent it.

What I meant is that the patch description is missing :)

Tony

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#1542047 — Re: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Date2016-12-14 18:00 +0100
SubjectRe: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sOl4w-mI-31@gated-at.bofh.it>
In reply to#1541964
On Wed, Dec 14, 2016 at 03:47:57PM +0100, Pali Rohár wrote:
> Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
> ---
>  drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
>  1 file changed, 28 insertions(+), 16 deletions(-)

I don't accept patches without any changelog information, nor would I
ever expect any other maintainer to do so. Please read
Documentation/SubmittingPatches for how to write a good changelog
message.

thanks,

greg k-h

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#1542141

FromPali Rohár <pali.rohar@gmail.com>
Date2016-12-14 20:30 +0100
Message-ID<sOnpv-2DO-11@gated-at.bofh.it>
In reply to#1541964
Based on the musb ug, force_host bit is allowed to be set along with
force_hs or force_fs bit.

It could help to implement forced host mode via testmode on Nokia N900.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
 drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
index 9b22d94..62c13a2 100644
--- a/drivers/usb/musb/musb_debugfs.c
+++ b/drivers/usb/musb/musb_debugfs.c
@@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
 
 	test = musb_readb(musb->mregs, MUSB_TESTMODE);
 
-	if (test & MUSB_TEST_FORCE_HOST)
+	if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
+		seq_printf(s, "force host full-speed\n");
+
+	else if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
+		seq_printf(s, "force host high-speed\n");
+
+	else if (test & MUSB_TEST_FORCE_HOST)
 		seq_printf(s, "force host\n");
 
-	if (test & MUSB_TEST_FIFO_ACCESS)
+	else if (test & MUSB_TEST_FIFO_ACCESS)
 		seq_printf(s, "fifo access\n");
 
-	if (test & MUSB_TEST_FORCE_FS)
+	else if (test & MUSB_TEST_FORCE_FS)
 		seq_printf(s, "force full-speed\n");
 
-	if (test & MUSB_TEST_FORCE_HS)
+	else if (test & MUSB_TEST_FORCE_HS)
 		seq_printf(s, "force high-speed\n");
 
-	if (test & MUSB_TEST_PACKET)
+	else if (test & MUSB_TEST_PACKET)
 		seq_printf(s, "test packet\n");
 
-	if (test & MUSB_TEST_K)
+	else if (test & MUSB_TEST_K)
 		seq_printf(s, "test K\n");
 
-	if (test & MUSB_TEST_J)
+	else if (test & MUSB_TEST_J)
 		seq_printf(s, "test J\n");
 
-	if (test & MUSB_TEST_SE0_NAK)
+	else if (test & MUSB_TEST_SE0_NAK)
 		seq_printf(s, "test SE0 NAK\n");
 
 	return 0;
@@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
 	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;
 
-	if (strstarts(buf, "force host"))
+	if (strstarts(buf, "force host full-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS;
+
+	else if (strstarts(buf, "force host high-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS;
+
+	else if (strstarts(buf, "force host"))
 		test = MUSB_TEST_FORCE_HOST;
 
-	if (strstarts(buf, "fifo access"))
+	else if (strstarts(buf, "fifo access"))
 		test = MUSB_TEST_FIFO_ACCESS;
 
-	if (strstarts(buf, "force full-speed"))
+	else if (strstarts(buf, "force full-speed"))
 		test = MUSB_TEST_FORCE_FS;
 
-	if (strstarts(buf, "force high-speed"))
+	else if (strstarts(buf, "force high-speed"))
 		test = MUSB_TEST_FORCE_HS;
 
-	if (strstarts(buf, "test packet")) {
+	else if (strstarts(buf, "test packet")) {
 		test = MUSB_TEST_PACKET;
 		musb_load_testpacket(musb);
 	}
 
-	if (strstarts(buf, "test K"))
+	else if (strstarts(buf, "test K"))
 		test = MUSB_TEST_K;
 
-	if (strstarts(buf, "test J"))
+	else if (strstarts(buf, "test J"))
 		test = MUSB_TEST_J;
 
-	if (strstarts(buf, "test SE0 NAK"))
+	else if (strstarts(buf, "test SE0 NAK"))
 		test = MUSB_TEST_SE0_NAK;
 
 	musb_writeb(musb->mregs, MUSB_TESTMODE, test);
-- 
1.7.9.5

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#1543199 — Re: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromBin Liu <b-liu@ti.com>
Date2016-12-16 05:10 +0100
SubjectRe: [PATCH] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sOS0h-6D7-9@gated-at.bofh.it>
In reply to#1542141
On Wed, Dec 14, 2016 at 08:23:45PM +0100, Pali Rohár wrote:
> Based on the musb ug, force_host bit is allowed to be set along with
> force_hs or force_fs bit.
> 
> It could help to implement forced host mode via testmode on Nokia N900.
> 
> Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
> ---
>  drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
>  1 file changed, 28 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
> index 9b22d94..62c13a2 100644
> --- a/drivers/usb/musb/musb_debugfs.c
> +++ b/drivers/usb/musb/musb_debugfs.c
> @@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
>  
>  	test = musb_readb(musb->mregs, MUSB_TESTMODE);
>  
> -	if (test & MUSB_TEST_FORCE_HOST)
> +	if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))

	if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS) ==
			MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS)

or even simpler:

	if (test == MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS)

since multiple tests at the same time are not allowed.

> +		seq_printf(s, "force host full-speed\n");
> +
> +	else if (test & (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))

	else if (test == MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS)

Regards,
-Bin.

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#1544055 — [PATCH v2] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromPali Rohár <pali.rohar@gmail.com>
Date2016-12-18 01:10 +0100
Subject[PATCH v2] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sPxd8-8pt-11@gated-at.bofh.it>
In reply to#1543199
Based on the musb ug, force_host bit is allowed to be set along with
force_hs or force_fs bit.

It could help to implement forced host mode via testmode on Nokia N900.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
Changes in v2:
* Use == instead of & for comparison of testmode
---
 drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
index 9b22d94..5308cea 100644
--- a/drivers/usb/musb/musb_debugfs.c
+++ b/drivers/usb/musb/musb_debugfs.c
@@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
 
 	test = musb_readb(musb->mregs, MUSB_TESTMODE);
 
-	if (test & MUSB_TEST_FORCE_HOST)
+	if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
+		seq_printf(s, "force host full-speed\n");
+
+	else if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
+		seq_printf(s, "force host high-speed\n");
+
+	else if (test == MUSB_TEST_FORCE_HOST)
 		seq_printf(s, "force host\n");
 
-	if (test & MUSB_TEST_FIFO_ACCESS)
+	else if (test == MUSB_TEST_FIFO_ACCESS)
 		seq_printf(s, "fifo access\n");
 
-	if (test & MUSB_TEST_FORCE_FS)
+	else if (test == MUSB_TEST_FORCE_FS)
 		seq_printf(s, "force full-speed\n");
 
-	if (test & MUSB_TEST_FORCE_HS)
+	else if (test == MUSB_TEST_FORCE_HS)
 		seq_printf(s, "force high-speed\n");
 
-	if (test & MUSB_TEST_PACKET)
+	else if (test == MUSB_TEST_PACKET)
 		seq_printf(s, "test packet\n");
 
-	if (test & MUSB_TEST_K)
+	else if (test == MUSB_TEST_K)
 		seq_printf(s, "test K\n");
 
-	if (test & MUSB_TEST_J)
+	else if (test == MUSB_TEST_J)
 		seq_printf(s, "test J\n");
 
-	if (test & MUSB_TEST_SE0_NAK)
+	else if (test == MUSB_TEST_SE0_NAK)
 		seq_printf(s, "test SE0 NAK\n");
 
 	return 0;
@@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
 	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;
 
-	if (strstarts(buf, "force host"))
+	if (strstarts(buf, "force host full-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS;
+
+	else if (strstarts(buf, "force host high-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS;
+
+	else if (strstarts(buf, "force host"))
 		test = MUSB_TEST_FORCE_HOST;
 
-	if (strstarts(buf, "fifo access"))
+	else if (strstarts(buf, "fifo access"))
 		test = MUSB_TEST_FIFO_ACCESS;
 
-	if (strstarts(buf, "force full-speed"))
+	else if (strstarts(buf, "force full-speed"))
 		test = MUSB_TEST_FORCE_FS;
 
-	if (strstarts(buf, "force high-speed"))
+	else if (strstarts(buf, "force high-speed"))
 		test = MUSB_TEST_FORCE_HS;
 
-	if (strstarts(buf, "test packet")) {
+	else if (strstarts(buf, "test packet")) {
 		test = MUSB_TEST_PACKET;
 		musb_load_testpacket(musb);
 	}
 
-	if (strstarts(buf, "test K"))
+	else if (strstarts(buf, "test K"))
 		test = MUSB_TEST_K;
 
-	if (strstarts(buf, "test J"))
+	else if (strstarts(buf, "test J"))
 		test = MUSB_TEST_J;
 
-	if (strstarts(buf, "test SE0 NAK"))
+	else if (strstarts(buf, "test SE0 NAK"))
 		test = MUSB_TEST_SE0_NAK;
 
 	musb_writeb(musb->mregs, MUSB_TESTMODE, test);
-- 
1.7.9.5

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#1544614 — Re: [PATCH v2] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromBin Liu <b-liu@ti.com>
Date2016-12-19 16:20 +0100
SubjectRe: [PATCH v2] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sQ7Tj-1bC-15@gated-at.bofh.it>
In reply to#1544055
On Sun, Dec 18, 2016 at 12:54:40AM +0100, Pali Rohár wrote:
> Based on the musb ug, force_host bit is allowed to be set along with
> force_hs or force_fs bit.
> 
> It could help to implement forced host mode via testmode on Nokia N900.
> 
> Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
> ---
> Changes in v2:
> * Use == instead of & for comparison of testmode
> ---
>  drivers/usb/musb/musb_debugfs.c |   44 +++++++++++++++++++++++++--------------
>  1 file changed, 28 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
> index 9b22d94..5308cea 100644
> --- a/drivers/usb/musb/musb_debugfs.c
> +++ b/drivers/usb/musb/musb_debugfs.c
> @@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
>  
>  	test = musb_readb(musb->mregs, MUSB_TESTMODE);
>  
> -	if (test & MUSB_TEST_FORCE_HOST)
> +	if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
> +		seq_printf(s, "force host full-speed\n");
> +
> +	else if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
> +		seq_printf(s, "force host high-speed\n");
> +
> +	else if (test == MUSB_TEST_FORCE_HOST)
>  		seq_printf(s, "force host\n");
>  
> -	if (test & MUSB_TEST_FIFO_ACCESS)
> +	else if (test == MUSB_TEST_FIFO_ACCESS)
>  		seq_printf(s, "fifo access\n");
>  
> -	if (test & MUSB_TEST_FORCE_FS)
> +	else if (test == MUSB_TEST_FORCE_FS)
>  		seq_printf(s, "force full-speed\n");
>  
> -	if (test & MUSB_TEST_FORCE_HS)
> +	else if (test == MUSB_TEST_FORCE_HS)
>  		seq_printf(s, "force high-speed\n");
>  
> -	if (test & MUSB_TEST_PACKET)
> +	else if (test == MUSB_TEST_PACKET)
>  		seq_printf(s, "test packet\n");
>  
> -	if (test & MUSB_TEST_K)
> +	else if (test == MUSB_TEST_K)
>  		seq_printf(s, "test K\n");
>  
> -	if (test & MUSB_TEST_J)
> +	else if (test == MUSB_TEST_J)
>  		seq_printf(s, "test J\n");
>  
> -	if (test & MUSB_TEST_SE0_NAK)
> +	else if (test == MUSB_TEST_SE0_NAK)
>  		seq_printf(s, "test SE0 NAK\n");
>  
>  	return 0;
> @@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
>  	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
>  		return -EFAULT;
>  
> -	if (strstarts(buf, "force host"))
> +	if (strstarts(buf, "force host full-speed"))

buf is only 18 bytes long, the string is not fully compared.
You might have to increase buf[] to 24 bytes.

Regards,
-Bin.

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#1544618 — [PATCH v3] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromPali Rohár <pali.rohar@gmail.com>
Date2016-12-19 16:30 +0100
Subject[PATCH v3] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sQ830-1eW-29@gated-at.bofh.it>
In reply to#1544055
Based on the musb ug, force_host bit is allowed to be set along with
force_hs or force_fs bit.

It could help to implement forced host mode via testmode on Nokia N900.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
Changes in v2:
* Use == instead of & for comparison of testmode
Changes in v3:
* Increase buf[] to 24 bytes
---
 drivers/usb/musb/musb_debugfs.c |   46 ++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 17 deletions(-)

diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
index 9b22d94..4d6c505 100644
--- a/drivers/usb/musb/musb_debugfs.c
+++ b/drivers/usb/musb/musb_debugfs.c
@@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
 
 	test = musb_readb(musb->mregs, MUSB_TESTMODE);
 
-	if (test & MUSB_TEST_FORCE_HOST)
+	if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
+		seq_printf(s, "force host full-speed\n");
+
+	else if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
+		seq_printf(s, "force host high-speed\n");
+
+	else if (test == MUSB_TEST_FORCE_HOST)
 		seq_printf(s, "force host\n");
 
-	if (test & MUSB_TEST_FIFO_ACCESS)
+	else if (test == MUSB_TEST_FIFO_ACCESS)
 		seq_printf(s, "fifo access\n");
 
-	if (test & MUSB_TEST_FORCE_FS)
+	else if (test == MUSB_TEST_FORCE_FS)
 		seq_printf(s, "force full-speed\n");
 
-	if (test & MUSB_TEST_FORCE_HS)
+	else if (test == MUSB_TEST_FORCE_HS)
 		seq_printf(s, "force high-speed\n");
 
-	if (test & MUSB_TEST_PACKET)
+	else if (test == MUSB_TEST_PACKET)
 		seq_printf(s, "test packet\n");
 
-	if (test & MUSB_TEST_K)
+	else if (test == MUSB_TEST_K)
 		seq_printf(s, "test K\n");
 
-	if (test & MUSB_TEST_J)
+	else if (test == MUSB_TEST_J)
 		seq_printf(s, "test J\n");
 
-	if (test & MUSB_TEST_SE0_NAK)
+	else if (test == MUSB_TEST_SE0_NAK)
 		seq_printf(s, "test SE0 NAK\n");
 
 	return 0;
@@ -192,7 +198,7 @@ static ssize_t musb_test_mode_write(struct file *file,
 	struct seq_file		*s = file->private_data;
 	struct musb		*musb = s->private;
 	u8			test;
-	char			buf[18];
+	char			buf[24];
 
 	test = musb_readb(musb->mregs, MUSB_TESTMODE);
 	if (test) {
@@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
 	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;
 
-	if (strstarts(buf, "force host"))
+	if (strstarts(buf, "force host full-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS;
+
+	else if (strstarts(buf, "force host high-speed"))
+		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS;
+
+	else if (strstarts(buf, "force host"))
 		test = MUSB_TEST_FORCE_HOST;
 
-	if (strstarts(buf, "fifo access"))
+	else if (strstarts(buf, "fifo access"))
 		test = MUSB_TEST_FIFO_ACCESS;
 
-	if (strstarts(buf, "force full-speed"))
+	else if (strstarts(buf, "force full-speed"))
 		test = MUSB_TEST_FORCE_FS;
 
-	if (strstarts(buf, "force high-speed"))
+	else if (strstarts(buf, "force high-speed"))
 		test = MUSB_TEST_FORCE_HS;
 
-	if (strstarts(buf, "test packet")) {
+	else if (strstarts(buf, "test packet")) {
 		test = MUSB_TEST_PACKET;
 		musb_load_testpacket(musb);
 	}
 
-	if (strstarts(buf, "test K"))
+	else if (strstarts(buf, "test K"))
 		test = MUSB_TEST_K;
 
-	if (strstarts(buf, "test J"))
+	else if (strstarts(buf, "test J"))
 		test = MUSB_TEST_J;
 
-	if (strstarts(buf, "test SE0 NAK"))
+	else if (strstarts(buf, "test SE0 NAK"))
 		test = MUSB_TEST_SE0_NAK;
 
 	musb_writeb(musb->mregs, MUSB_TESTMODE, test);
-- 
1.7.9.5

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#1544763 — Re: [PATCH v3] usb: musb: debugfs: allow forcing host mode together with speed in testmode

FromBin Liu <b-liu@ti.com>
Date2016-12-19 21:50 +0100
SubjectRe: [PATCH v3] usb: musb: debugfs: allow forcing host mode together with speed in testmode
Message-ID<sQd2F-4h6-1@gated-at.bofh.it>
In reply to#1544618
On Mon, Dec 19, 2016 at 04:23:47PM +0100, Pali Rohár wrote:
> Based on the musb ug, force_host bit is allowed to be set along with
> force_hs or force_fs bit.
> 
> It could help to implement forced host mode via testmode on Nokia N900.
> 
> Signed-off-by: Pali Rohár <pali.rohar@gmail.com>

Applied. Thanks.
-Bin.

> ---
> Changes in v2:
> * Use == instead of & for comparison of testmode
> Changes in v3:
> * Increase buf[] to 24 bytes
> ---
>  drivers/usb/musb/musb_debugfs.c |   46 ++++++++++++++++++++++++---------------
>  1 file changed, 29 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c
> index 9b22d94..4d6c505 100644
> --- a/drivers/usb/musb/musb_debugfs.c
> +++ b/drivers/usb/musb/musb_debugfs.c
> @@ -147,28 +147,34 @@ static int musb_test_mode_show(struct seq_file *s, void *unused)
>  
>  	test = musb_readb(musb->mregs, MUSB_TESTMODE);
>  
> -	if (test & MUSB_TEST_FORCE_HOST)
> +	if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS))
> +		seq_printf(s, "force host full-speed\n");
> +
> +	else if (test == (MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS))
> +		seq_printf(s, "force host high-speed\n");
> +
> +	else if (test == MUSB_TEST_FORCE_HOST)
>  		seq_printf(s, "force host\n");
>  
> -	if (test & MUSB_TEST_FIFO_ACCESS)
> +	else if (test == MUSB_TEST_FIFO_ACCESS)
>  		seq_printf(s, "fifo access\n");
>  
> -	if (test & MUSB_TEST_FORCE_FS)
> +	else if (test == MUSB_TEST_FORCE_FS)
>  		seq_printf(s, "force full-speed\n");
>  
> -	if (test & MUSB_TEST_FORCE_HS)
> +	else if (test == MUSB_TEST_FORCE_HS)
>  		seq_printf(s, "force high-speed\n");
>  
> -	if (test & MUSB_TEST_PACKET)
> +	else if (test == MUSB_TEST_PACKET)
>  		seq_printf(s, "test packet\n");
>  
> -	if (test & MUSB_TEST_K)
> +	else if (test == MUSB_TEST_K)
>  		seq_printf(s, "test K\n");
>  
> -	if (test & MUSB_TEST_J)
> +	else if (test == MUSB_TEST_J)
>  		seq_printf(s, "test J\n");
>  
> -	if (test & MUSB_TEST_SE0_NAK)
> +	else if (test == MUSB_TEST_SE0_NAK)
>  		seq_printf(s, "test SE0 NAK\n");
>  
>  	return 0;
> @@ -192,7 +198,7 @@ static ssize_t musb_test_mode_write(struct file *file,
>  	struct seq_file		*s = file->private_data;
>  	struct musb		*musb = s->private;
>  	u8			test;
> -	char			buf[18];
> +	char			buf[24];
>  
>  	test = musb_readb(musb->mregs, MUSB_TESTMODE);
>  	if (test) {
> @@ -206,30 +212,36 @@ static ssize_t musb_test_mode_write(struct file *file,
>  	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
>  		return -EFAULT;
>  
> -	if (strstarts(buf, "force host"))
> +	if (strstarts(buf, "force host full-speed"))
> +		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_FS;
> +
> +	else if (strstarts(buf, "force host high-speed"))
> +		test = MUSB_TEST_FORCE_HOST | MUSB_TEST_FORCE_HS;
> +
> +	else if (strstarts(buf, "force host"))
>  		test = MUSB_TEST_FORCE_HOST;
>  
> -	if (strstarts(buf, "fifo access"))
> +	else if (strstarts(buf, "fifo access"))
>  		test = MUSB_TEST_FIFO_ACCESS;
>  
> -	if (strstarts(buf, "force full-speed"))
> +	else if (strstarts(buf, "force full-speed"))
>  		test = MUSB_TEST_FORCE_FS;
>  
> -	if (strstarts(buf, "force high-speed"))
> +	else if (strstarts(buf, "force high-speed"))
>  		test = MUSB_TEST_FORCE_HS;
>  
> -	if (strstarts(buf, "test packet")) {
> +	else if (strstarts(buf, "test packet")) {
>  		test = MUSB_TEST_PACKET;
>  		musb_load_testpacket(musb);
>  	}
>  
> -	if (strstarts(buf, "test K"))
> +	else if (strstarts(buf, "test K"))
>  		test = MUSB_TEST_K;
>  
> -	if (strstarts(buf, "test J"))
> +	else if (strstarts(buf, "test J"))
>  		test = MUSB_TEST_J;
>  
> -	if (strstarts(buf, "test SE0 NAK"))
> +	else if (strstarts(buf, "test SE0 NAK"))
>  		test = MUSB_TEST_SE0_NAK;
>  
>  	musb_writeb(musb->mregs, MUSB_TESTMODE, test);
> -- 
> 1.7.9.5
>

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