| Message ID | b09cdfbf4c7546f299031c2923b9f8fcef881e3d.1507236823.git-series.maxime.ripard@free-electrons.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
Hi, On Thu, Oct 05, 2017 at 10:54:07PM +0200, Maxime Ripard wrote: > Old pinctrl drivers will need to disable strict mode for various reasons, > among which: > - Some DT will still have a pinctrl group for each GPIO used, which will > be rejected by pin_request. While we could remove those nodes, we still > have to deal with old DTs. > - Some GPIOs on these boards need to have their pin configuration changed > (for bias or current), and there's no clear migration path > > Let's disable the strict mode on those SoCs so that there's no breakage. > I revive this thread since I am facing the same issue. Did you find a way to deal with it? I have not seen a new version of this set of patches, I may have missed it. Why you didn't choose to add an optionnal property to enforce the use of the strict mode? I mean, with your solution, if there is a new DT with an old pin controller, it won't benefit from the strict mode. Ludovic > Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> > --- > drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c | 1 + > drivers/pinctrl/sunxi/pinctrl-sun5i.c | 1 + > drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c | 1 + > drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c | 1 + > drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c | 1 + > drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c | 3 ++- > drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c | 1 + > 7 files changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c > index f763d8d62d6e..295e48fc94bc 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c > @@ -1289,6 +1289,7 @@ static const struct sunxi_pinctrl_desc sun4i_a10_pinctrl_data = { > .npins = ARRAY_SIZE(sun4i_a10_pins), > .irq_banks = 1, > .irq_read_needs_mux = true, > + .disable_strict_mode = true, > }; > > static int sun4i_a10_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun5i.c b/drivers/pinctrl/sunxi/pinctrl-sun5i.c > index 47afd558b114..27ec99e81c4c 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun5i.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun5i.c > @@ -713,6 +713,7 @@ static const struct sunxi_pinctrl_desc sun5i_pinctrl_data = { > .pins = sun5i_pins, > .npins = ARRAY_SIZE(sun5i_pins), > .irq_banks = 1, > + .disable_strict_mode = true, > }; > > static int sun5i_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c > index 951a25c18815..82ffaf466892 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c > @@ -965,6 +965,7 @@ static const struct sunxi_pinctrl_desc sun6i_a31_pinctrl_data = { > .pins = sun6i_a31_pins, > .npins = ARRAY_SIZE(sun6i_a31_pins), > .irq_banks = 4, > + .disable_strict_mode = true, > }; > > static int sun6i_a31_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c > index 721b6935baf3..402fd7d21e7b 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c > @@ -563,6 +563,7 @@ static const struct sunxi_pinctrl_desc sun8i_a23_pinctrl_data = { > .pins = sun8i_a23_pins, > .npins = ARRAY_SIZE(sun8i_a23_pins), > .irq_banks = 3, > + .disable_strict_mode = true, > }; > > static int sun8i_a23_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c > index ef1e0bef4099..da387211a75e 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c > @@ -486,6 +486,7 @@ static const struct sunxi_pinctrl_desc sun8i_a33_pinctrl_data = { > .npins = ARRAY_SIZE(sun8i_a33_pins), > .irq_banks = 2, > .irq_bank_base = 1, > + .disable_strict_mode = true, > }; > > static int sun8i_a33_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c > index 518a92df4418..d1719a738c20 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c > @@ -491,7 +491,8 @@ static const struct sunxi_pinctrl_desc sun8i_h3_pinctrl_data = { > .pins = sun8i_h3_pins, > .npins = ARRAY_SIZE(sun8i_h3_pins), > .irq_banks = 2, > - .irq_read_needs_mux = true > + .irq_read_needs_mux = true, > + .disable_strict_mode = true, > }; > > static int sun8i_h3_pinctrl_probe(struct platform_device *pdev) > diff --git a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c > index bc14e954d7a2..472ef0d91b99 100644 > --- a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c > +++ b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c > @@ -721,6 +721,7 @@ static const struct sunxi_pinctrl_desc sun9i_a80_pinctrl_data = { > .pins = sun9i_a80_pins, > .npins = ARRAY_SIZE(sun9i_a80_pins), > .irq_banks = 5, > + .disable_strict_mode = true, > }; > > static int sun9i_a80_pinctrl_probe(struct platform_device *pdev) > -- > git-series 0.9.1 > -- > To unsubscribe from this list: send the line "unsubscribe linux-gpio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c index f763d8d62d6e..295e48fc94bc 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c @@ -1289,6 +1289,7 @@ static const struct sunxi_pinctrl_desc sun4i_a10_pinctrl_data = { .npins = ARRAY_SIZE(sun4i_a10_pins), .irq_banks = 1, .irq_read_needs_mux = true, + .disable_strict_mode = true, }; static int sun4i_a10_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun5i.c b/drivers/pinctrl/sunxi/pinctrl-sun5i.c index 47afd558b114..27ec99e81c4c 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun5i.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun5i.c @@ -713,6 +713,7 @@ static const struct sunxi_pinctrl_desc sun5i_pinctrl_data = { .pins = sun5i_pins, .npins = ARRAY_SIZE(sun5i_pins), .irq_banks = 1, + .disable_strict_mode = true, }; static int sun5i_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c index 951a25c18815..82ffaf466892 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c @@ -965,6 +965,7 @@ static const struct sunxi_pinctrl_desc sun6i_a31_pinctrl_data = { .pins = sun6i_a31_pins, .npins = ARRAY_SIZE(sun6i_a31_pins), .irq_banks = 4, + .disable_strict_mode = true, }; static int sun6i_a31_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c index 721b6935baf3..402fd7d21e7b 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c @@ -563,6 +563,7 @@ static const struct sunxi_pinctrl_desc sun8i_a23_pinctrl_data = { .pins = sun8i_a23_pins, .npins = ARRAY_SIZE(sun8i_a23_pins), .irq_banks = 3, + .disable_strict_mode = true, }; static int sun8i_a23_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c index ef1e0bef4099..da387211a75e 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c @@ -486,6 +486,7 @@ static const struct sunxi_pinctrl_desc sun8i_a33_pinctrl_data = { .npins = ARRAY_SIZE(sun8i_a33_pins), .irq_banks = 2, .irq_bank_base = 1, + .disable_strict_mode = true, }; static int sun8i_a33_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c index 518a92df4418..d1719a738c20 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c @@ -491,7 +491,8 @@ static const struct sunxi_pinctrl_desc sun8i_h3_pinctrl_data = { .pins = sun8i_h3_pins, .npins = ARRAY_SIZE(sun8i_h3_pins), .irq_banks = 2, - .irq_read_needs_mux = true + .irq_read_needs_mux = true, + .disable_strict_mode = true, }; static int sun8i_h3_pinctrl_probe(struct platform_device *pdev) diff --git a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c index bc14e954d7a2..472ef0d91b99 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c +++ b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c @@ -721,6 +721,7 @@ static const struct sunxi_pinctrl_desc sun9i_a80_pinctrl_data = { .pins = sun9i_a80_pins, .npins = ARRAY_SIZE(sun9i_a80_pins), .irq_banks = 5, + .disable_strict_mode = true, }; static int sun9i_a80_pinctrl_probe(struct platform_device *pdev)
Old pinctrl drivers will need to disable strict mode for various reasons, among which: - Some DT will still have a pinctrl group for each GPIO used, which will be rejected by pin_request. While we could remove those nodes, we still have to deal with old DTs. - Some GPIOs on these boards need to have their pin configuration changed (for bias or current), and there's no clear migration path Let's disable the strict mode on those SoCs so that there's no breakage. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> --- drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c | 1 + drivers/pinctrl/sunxi/pinctrl-sun5i.c | 1 + drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c | 1 + drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c | 1 + drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c | 1 + drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c | 3 ++- drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c | 1 + 7 files changed, 8 insertions(+), 1 deletion(-) -- git-series 0.9.1