Re: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
On Thu, Nov 28, 2013 at 11:23:52AM +0530, Kishon Vijay Abraham I wrote: On Thursday 28 November 2013 04:06 AM, Matt Porter wrote: On Wed, Nov 27, 2013 at 12:13:25PM -0500, Matt Porter wrote: On Tue, Nov 26, 2013 at 03:53:32PM +0530, Kishon Vijay Abraham I wrote: Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } +if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. Yes, thanks. I'll fix these and also note that the same issue exists in Kamil's patch for these same hsotg-phy conditional uses. I'll work with Kamil to either get those addressed there or in a follow on fix. I spoke too soon. If devm_phy_get fails, we don't set hsotg-phy and probe defer thus not reaching this point. Since hsotg-phy is either NULL or a valid struct phy *, this is correct as is throughout the driver. +phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); +if (hsotg-phy) same here. Ok. Same above, this will be NULL on failure (but is only applicable at this point on the platform data path. Ah ok.. Btw where is phy_get being called? Is it not part of this series? It's in the Kamil's Exynos USB Phy - generic phy series [1] which I depend on here. I mentioned it in the cover letter toward the end so it's a bit buried. I have some outstanding, but trivial, comments on that series but I hear Kamil will be posting an update in the coming days. I'll wait a few days to post v4 addressing your comments so I can hopefully rebase against his updated s3c-hsotg patch. -Matt [1] https://lkml.org/lkml/2013/11/5/275 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
Hi Matt, From: Matt Porter [mailto:matt.por...@linaro.org] Sent: Thursday, November 28, 2013 5:42 PM On Thu, Nov 28, 2013 at 11:23:52AM +0530, Kishon Vijay Abraham I wrote: On Thursday 28 November 2013 04:06 AM, Matt Porter wrote: On Wed, Nov 27, 2013 at 12:13:25PM -0500, Matt Porter wrote: On Tue, Nov 26, 2013 at 03:53:32PM +0530, Kishon Vijay Abraham I wrote: Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. Yes, thanks. I'll fix these and also note that the same issue exists in Kamil's patch for these same hsotg-phy conditional uses. I'll work with Kamil to either get those addressed there or in a follow on fix. I spoke too soon. If devm_phy_get fails, we don't set hsotg-phy and probe defer thus not reaching this point. Since hsotg-phy is either NULL or a valid struct phy *, this is correct as is throughout the driver. + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) same here. Ok. Same above, this will be NULL on failure (but is only applicable at this point on the platform data path. Ah ok.. Btw where is phy_get being called? Is it not part of this series? It's in the Kamil's Exynos USB Phy - generic phy series [1] which I depend on here. I mentioned it in the cover letter toward the end so it's a bit buried. I have some outstanding, but trivial, comments on that series but I hear Kamil will be posting an update in the coming days. I'll wait a few days to post v4 addressing your comments so I can hopefully rebase against his updated s3c-hsotg patch. I am sorry to keep you waiting. I was doing some urgent non USB work lately and that is the reason for the delay. Thank you for the review of the last version, by the way. I should post the new version on Wednesday (or Tuesday afternoon, time permitting). Also, I will have no access to my Samsung email until Tuesday. Best wishes, Kamil Debski -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
On Tue, Nov 26, 2013 at 03:53:32PM +0530, Kishon Vijay Abraham I wrote: Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. Yes, thanks. I'll fix these and also note that the same issue exists in Kamil's patch for these same hsotg-phy conditional uses. I'll work with Kamil to either get those addressed there or in a follow on fix. + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) same here. Ok. Thanks Kishon -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
On Wed, Nov 27, 2013 at 12:13:25PM -0500, Matt Porter wrote: On Tue, Nov 26, 2013 at 03:53:32PM +0530, Kishon Vijay Abraham I wrote: Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. Yes, thanks. I'll fix these and also note that the same issue exists in Kamil's patch for these same hsotg-phy conditional uses. I'll work with Kamil to either get those addressed there or in a follow on fix. I spoke too soon. If devm_phy_get fails, we don't set hsotg-phy and probe defer thus not reaching this point. Since hsotg-phy is either NULL or a valid struct phy *, this is correct as is throughout the driver. + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) same here. Ok. Same above, this will be NULL on failure (but is only applicable at this point on the platform data path. -Matt -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
On Thursday 28 November 2013 04:06 AM, Matt Porter wrote: On Wed, Nov 27, 2013 at 12:13:25PM -0500, Matt Porter wrote: On Tue, Nov 26, 2013 at 03:53:32PM +0530, Kishon Vijay Abraham I wrote: Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. Yes, thanks. I'll fix these and also note that the same issue exists in Kamil's patch for these same hsotg-phy conditional uses. I'll work with Kamil to either get those addressed there or in a follow on fix. I spoke too soon. If devm_phy_get fails, we don't set hsotg-phy and probe defer thus not reaching this point. Since hsotg-phy is either NULL or a valid struct phy *, this is correct as is throughout the driver. + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) same here. Ok. Same above, this will be NULL on failure (but is only applicable at this point on the platform data path. Ah ok.. Btw where is phy_get being called? Is it not part of this series? Thanks Kishon -Matt -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
Hi, On Monday 25 November 2013 11:46 PM, Matt Porter wrote: If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) IS_ERR? If your phy_get fails *phy* will have a error value.. + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) same here. Thanks Kishon -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v3 5/9] usb: gadget: s3c-hsotg: use generic phy_init()/phy_exit() support
If a generic phy is present, call phy_init()/phy_exit(). This supports generic phys that must be soft reset before power on. Signed-off-by: Matt Porter matt.por...@linaro.org --- drivers/usb/gadget/s3c-hsotg.c | 5 + 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index da3879b..8dfe33f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3622,6 +3622,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + if (hsotg-phy) + phy_init(hsotg-phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3715,6 +3718,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg-phy) + phy_exit(hsotg-phy); clk_disable_unprepare(hsotg-clk); return 0; -- 1.8.4 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
