linux-stable.git/drivers/pinctrl, branch v4.9.151

pinctrl: meson: fix pull enable register calculation

2019-01-13T09:03:47+00:00

[ Upstream commit 614b1868a125a0ba24be08f3a7fa832ddcde6bca ]

We just changed the code so we apply bias disable on the correct
register but forgot to align the register calculation. The result
is that we apply the change on the correct register, but possibly
at the incorrect offset/bit

This went undetected because offsets tends to be the same between
REG_PULL and REG_PULLEN for a given pin the EE controller. This
is not true for the AO controller.

Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable")
Signed-off-by: Jerome Brunet 
Acked-by: Neil Armstrong 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin

pinctrl: sunxi: a83t: Fix IRQ offset typo for PH11

2018-12-21T13:11:30+00:00

commit 478b6767ad26ab86d9ecc341027dd09a87b1f997 upstream.

Pin PH11 is used on various A83T board to detect a change in the OTG
port's ID pin, as in when an OTG host cable is plugged in.

The incorrect offset meant the gpiochip/irqchip was activating the wrong
pin for interrupts.

Fixes: 4730f33f0d82 ("pinctrl: sunxi: add allwinner A83T PIO controller support")
Cc: 
Signed-off-by: Chen-Yu Tsai 
Acked-by: Maxime Ripard 
Signed-off-by: Linus Walleij 
Signed-off-by: Greg Kroah-Hartman

pinctrl: meson: fix pinconf bias disable

2018-12-01T08:44:20+00:00

[ Upstream commit e39f9dd8206ad66992ac0e6218ef1ba746f2cce9 ]

If a bias is enabled on a pin of an Amlogic SoC, calling .pin_config_set()
with PIN_CONFIG_BIAS_DISABLE will not disable the bias. Instead it will
force a pull-down bias on the pin.

Instead of the pull type register bank, the driver should access the pull
enable register bank.

Fixes: 6ac730951104 ("pinctrl: add driver for Amlogic Meson SoCs")
Signed-off-by: Jerome Brunet 
Acked-by: Neil Armstrong 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin

pinctrl: ssbi-gpio: Fix pm8xxx_pin_config_get() to be compliant

2018-11-13T19:16:51+00:00

[ Upstream commit b432414b996d32a1bd9afe2bd595bd5729c1477f ]

If you look at "pinconf-groups" in debugfs for ssbi-gpio you'll notice
it looks like nonsense.

The problem is fairly well described in commit 1cf86bc21257 ("pinctrl:
qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant") and
commit 05e0c828955c ("pinctrl: msm: Fix msm_config_group_get() to be
compliant"), but it was pointed out that ssbi-gpio has the same
problem.  Let's fix it there too.

Fixes: b4c45fe974bc ("pinctrl: qcom: ssbi: Family A gpio & mpp drivers")
Signed-off-by: Douglas Anderson 
Reviewed-by: Stephen Boyd 
Reviewed-by: Bjorn Andersson 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

pinctrl: spmi-mpp: Fix pmic_mpp_config_get() to be compliant

2018-11-13T19:16:51+00:00

[ Upstream commit 0d5b476f8f57fcb06c45fe27681ac47254f63fd2 ]

If you look at "pinconf-groups" in debugfs for ssbi-mpp you'll notice
it looks like nonsense.

The problem is fairly well described in commit 1cf86bc21257 ("pinctrl:
qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant") and
commit 05e0c828955c ("pinctrl: msm: Fix msm_config_group_get() to be
compliant"), but it was pointed out that ssbi-mpp has the same
problem.  Let's fix it there too.

NOTE: in case it's helpful to someone reading this, the way to tell
whether to do the -EINVAL or not is to look at the PCONFDUMP for a
given attribute.  If the last element (has_arg) is false then you need
to do the -EINVAL trick.

ALSO NOTE: it seems unlikely that the values returned when we try to
get PIN_CONFIG_BIAS_PULL_UP will actually be printed since "has_arg"
is false for that one, but I guess it's still fine to return different
values so I kept doing that.  It seems like another driver (ssbi-gpio)
uses a custom attribute (PM8XXX_QCOM_PULL_UP_STRENGTH) for something
similar so maybe a future change should do that here too.

Fixes: cfb24f6ebd38 ("pinctrl: Qualcomm SPMI PMIC MPP pin controller driver")
Signed-off-by: Douglas Anderson 
Reviewed-by: Stephen Boyd 
Reviewed-by: Bjorn Andersson 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

pinctrl: qcom: spmi-mpp: Fix drive strength setting

2018-11-13T19:16:51+00:00

[ Upstream commit 89c68b102f13f123aaef22b292526d6b92501334 ]

It looks like we parse the drive strength setting here, but never
actually write it into the hardware to update it. Parse the setting and
then write it at the end of the pinconf setting function so that it
actually sticks in the hardware.

Fixes: 0e948042c420 ("pinctrl: qcom: spmi-mpp: Implement support for sink mode")
Cc: Doug Anderson 
Signed-off-by: Stephen Boyd 
Reviewed-by: Bjorn Andersson 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set_mux

2018-11-13T19:16:50+00:00

[ Upstream commit 69f8455f6cc78fa6cdf80d0105d7a748106271dc ]

'ret' should be returned while pmic_mpp_write_mode_ctl fails.

Fixes: 0e948042c420 ("pinctrl: qcom: spmi-mpp: Implement support for sink mode")
Signed-off-by: YueHaibing 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

pinctrl: qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant

2018-09-26T06:36:40+00:00

[ Upstream commit 1cf86bc21257a330e3af51f2a4e885f1a705f6a5 ]

If you do this on an sdm845 board:
  grep "" /sys/kernel/debug/pinctrl/*spmi:pmic*/pinconf-groups

...it looks like nonsense.  For every pin you see listed:
  input bias disabled, input bias high impedance, input bias pull down, input bias pull up, ...

That's because pmic_gpio_config_get() isn't complying with the rules
that pinconf_generic_dump_one() expects.  Specifically for boolean
parameters (anything with a "struct pin_config_item" where has_arg is
false) the function expects that the function should return its value
not through the "config" parameter but should return "0" if the value
is set and "-EINVAL" if the value isn't set.

Let's fix this.

>From a quick sample of other pinctrl drivers, it appears to be
tradition to also return 1 through the config parameter for these
boolean parameters when they exist.  I'm not one to knock tradition,
so I'll follow tradition and return 1 in these cases.  While I'm at
it, I'll also continue searching for four leaf clovers, kocking on
wood three times, and trying not to break mirrors.

NOTE: This also fixes an apparent typo for reading
PIN_CONFIG_BIAS_DISABLE where the old driver was accidentally
using "=" instead of "==" and thus was setting some internal
state when you tried to query PIN_CONFIG_BIAS_DISABLE.  Oops.

Fixes: eadff3024472 ("pinctrl: Qualcomm SPMI PMIC GPIO pin controller driver")
Signed-off-by: Douglas Anderson 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

pinctrl: freescale: off by one in imx1_pinconf_group_dbg_show()

2018-09-05T07:20:09+00:00

commit 19da44cd33a3a6ff7c97fff0189999ff15b241e4 upstream.

The info->groups[] array is allocated in imx1_pinctrl_parse_dt().  It
has info->ngroups elements.  Thus the > here should be >= to prevent
reading one element beyond the end of the array.

Cc: stable@vger.kernel.org
Fixes: 30612cd90005 ("pinctrl: imx1 core driver")
Signed-off-by: Dan Carpenter 
Reviewed-by: Uwe Kleine-König 
Acked-by: Dong Aisheng 
Signed-off-by: Linus Walleij 
Signed-off-by: Greg Kroah-Hartman

pinctrl: nsp: Fix potential NULL dereference

2018-08-24T11:12:39+00:00

[ Upstream commit c29e9da56bebb4c2c794e871b0dc0298bbf08142 ]

platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.

This is detected by Coccinelle semantic patch.

@@
expression pdev, res, n, t, e, e1, e2;
@@

res = platform_get_resource(pdev, t, n);
+ if (!res)
+   return -EINVAL;
... when != res == NULL
e = devm_ioremap_nocache(e1, res->start, e2);

Fixes: cc4fa83f66e9 ("pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC")
Signed-off-by: Wei Yongjun 
Reviewed-by: Ray Jui 
Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman