Refine mtk_pinconf_set()/mtk_pinconf_get() for backward compatibility to
previous MediaTek's bias-pull usage.
In PINCTRL_MTK that use pinctrl-mtk-common.c, bias-pull setting for pins
with 2 pull resistors can be specified as value for bias-pull-up and
bias-pull-down. For example:
bias-pull-up = <MTK_PUPD_SET_R1R0_00>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
bias-pull-up = <MTK_PUPD_SET_R1R0_10>;
bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
bias-pull-down = <MTK_PUPD_SET_R1R0_00>;
bias-pull-down = <MTK_PUPD_SET_R1R0_01>;
bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
On the other hand, PINCTRL_MTK_PARIS use customized properties
"mediatek,pull-up-adv" and "mediatek,pull-down-adv" to specify bias-pull
setting for pins with 2 pull resistors.
This introduce in-compatibility in device tree and increase porting
effort to MediaTek's customer that had already used PINCTRL_MTK version.
Besides, if customers are not aware of this change and still write devicetree
for PINCTRL_MTK version, they may encounter runtime failure with pinctrl and
spent time to debug.
This patch adds backward compatible to previous MediaTek's bias-pull usage
so that Mediatek's customer need not use a new devicetree property name.
The rationale is that: changing driver implementation had better leave
interface unchanged.
Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1579675994-7001-5-git-send-email-light.hsieh@mediatek.com
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1.Refine mtk_pinconf_get():
Use only one occurrence of return at end of this function.
2.Refine mtk_pinconf_set():
2.1 Use only one occurrence of return at end of this function.
2.2 Modify case of PIN_CONFIG_INPUT_ENABLE -
2.2.1
Regard all non-zero setting value as enable, instead of always enable.
2.2.2
Remove check of ies_present flag and always invoke mtk_hw_set_value()
since mtk_hw_pin_field_lookup() invoked inside mtk_hw_set_value() has
the same effect of checking if ies control is supported.
[The rationale is that: available of a control is always checked
in mtk_hw_pin_field_lookup() and no need to add ies_present flag
specially for ies control.]
2.3 Simply code logic for case of PIN_CONFIG_INPUT_SCHMITT.
2.4 Add case for PIN_CONFIG_INPUT_SCHMITT_ENABLE and process it with the
same code for case of PIN_CONFIG_INPUT_SCHMITT.
Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1579675994-7001-3-git-send-email-light.hsieh@mediatek.com
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Setting this up will configure wake from suspend properly,
and wake only for the interrupts that are setup in wake_mask,
not all interrupts.
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch provides the advanced drive for I2C used pins on MT8183.
The detail strength specification description of the I2C pin:
When E1=0/E0=0, the strength is 0.125mA.
When E1=0/E0=1, the strength is 0.25mA.
When E1=1/E0=0, the strength is 0.5mA.
When E1=1/E0=1, the strength is 1mA.
For I2C pins, there are existing generic driving setup and the above
specific driving setup. I2C pins can only support 2/4/6/8/10/12/14/16mA
driving adjustment in generic driving setup. But in specific driving
setup, they can support 0.125/0.25/0.5/1mA adjustment.
If we enable specific driving setup for I2C pins,
the existing generic driving setup will be disabled.
For some special features, we need the I2C pins specific driving setup.
The specific driving setup is controlled by E1E0EN.
So we need add extra vendor driving preperty instead of the generic
driving property. We can add "mediatek,drive-strength-adv = <XXX>;"
to describe the specific driving setup property.
"XXX" means the value of E1E0EN. So the valid arguments of
"mediatek,drive-strength-adv" are from 0 to 7.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Just add eint support to MT8183 pinctrl driver as usual as
happens on the other SoCs.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch provides the advanced pull for I2C used pins on MT8183.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add MT8183 pinctrl driver based on MediaTek pinctrl-paris core.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Light Hsieh