| Message ID | 1579675994-7001-5-git-send-email-light.hsieh@mediatek.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v8,1/6] pinctrl: mediatek: Check gpio pin number and use binary search in mtk_hw_pin_field_lookup() | expand |
On Tue, Jan 21, 2020 at 10:53 PM <light.hsieh@mediatek.com> wrote: > > From: Light Hsieh <light.hsieh@mediatek.com> > > 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> Acked-by: Sean Wang <sean.wang@kernel.org> > --- > drivers/pinctrl/mediatek/pinctrl-mt6765.c | 6 +- > drivers/pinctrl/mediatek/pinctrl-mt8183.c | 6 +- > drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 221 +++++++++++++++++++++++ > drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h | 11 ++ > drivers/pinctrl/mediatek/pinctrl-paris.c | 49 +++-- > 5 files changed, 265 insertions(+), 28 deletions(-) > > diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c > index 7fae397..905dae8c 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c > +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c > @@ -1072,10 +1072,8 @@ > .gpio_m = 0, > .base_names = mt6765_pinctrl_register_base_names, > .nbase_names = ARRAY_SIZE(mt6765_pinctrl_register_base_names), > - .bias_disable_set = mtk_pinconf_bias_disable_set, > - .bias_disable_get = mtk_pinconf_bias_disable_get, > - .bias_set = mtk_pinconf_bias_set, > - .bias_get = mtk_pinconf_bias_get, > + .bias_set_combo = mtk_pinconf_bias_set_combo, > + .bias_get_combo = mtk_pinconf_bias_get_combo, > .drive_set = mtk_pinconf_drive_set_raw, > .drive_get = mtk_pinconf_drive_get_raw, > .adv_pull_get = mtk_pinconf_adv_pull_get, > diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8183.c b/drivers/pinctrl/mediatek/pinctrl-mt8183.c > index 4eca818..6031833 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-mt8183.c > +++ b/drivers/pinctrl/mediatek/pinctrl-mt8183.c > @@ -556,10 +556,8 @@ > .gpio_m = 0, > .base_names = mt8183_pinctrl_register_base_names, > .nbase_names = ARRAY_SIZE(mt8183_pinctrl_register_base_names), > - .bias_disable_set = mtk_pinconf_bias_disable_set_rev1, > - .bias_disable_get = mtk_pinconf_bias_disable_get_rev1, > - .bias_set = mtk_pinconf_bias_set_rev1, > - .bias_get = mtk_pinconf_bias_get_rev1, > + .bias_set_combo = mtk_pinconf_bias_set_combo, > + .bias_get_combo = mtk_pinconf_bias_get_combo, > .drive_set = mtk_pinconf_drive_set_rev1, > .drive_get = mtk_pinconf_drive_get_rev1, > .adv_pull_get = mtk_pinconf_adv_pull_get, > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > index 2247eae..1da9425 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > @@ -6,6 +6,7 @@ > * > */ > > +#include <dt-bindings/pinctrl/mt65xx.h> > #include <linux/device.h> > #include <linux/err.h> > #include <linux/gpio/driver.h> > @@ -517,6 +518,226 @@ int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, > return 0; > } > > +/* Combo for the following pull register type: > + * 1. PU + PD > + * 2. PULLSEL + PULLEN > + * 3. PUPD + R0 + R1 > + */ > +static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 pullup, u32 arg) > +{ > + int err, pu, pd; > + > + if (arg == MTK_DISABLE) { > + pu = 0; > + pd = 0; > + } else if ((arg == MTK_ENABLE) && pullup) { > + pu = 1; > + pd = 0; > + } else if ((arg == MTK_ENABLE) && !pullup) { > + pu = 0; > + pd = 1; > + } else { > + err = -EINVAL; > + goto out; > + } > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu); > + if (err) > + goto out; > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); > + > +out: > + return err; > +} > + > +static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 pullup, u32 arg) > +{ > + int err, enable; > + > + if (arg == MTK_DISABLE) > + enable = 0; > + else if (arg == MTK_ENABLE) > + enable = 1; > + else { > + err = -EINVAL; > + goto out; > + } > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable); > + if (err) > + goto out; > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup); > + > +out: > + return err; > +} > + > +static int mtk_pinconf_bias_set_pupd_r1_r0(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 pullup, u32 arg) > +{ > + int err, r0, r1; > + > + if ((arg == MTK_DISABLE) || (arg == MTK_PUPD_SET_R1R0_00)) { > + pullup = 0; > + r0 = 0; > + r1 = 0; > + } else if (arg == MTK_PUPD_SET_R1R0_01) { > + r0 = 1; > + r1 = 0; > + } else if (arg == MTK_PUPD_SET_R1R0_10) { > + r0 = 0; > + r1 = 1; > + } else if (arg == MTK_PUPD_SET_R1R0_11) { > + r0 = 1; > + r1 = 1; > + } else { > + err = -EINVAL; > + goto out; > + } > + > + /* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */ > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, !pullup); > + if (err) > + goto out; > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, r0); > + if (err) > + goto out; > + > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1, r1); > + > +out: > + return err; > +} > + > +static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 *pullup, u32 *enable) > +{ > + int err, pu, pd; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &pu); > + if (err) > + goto out; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd); > + if (err) > + goto out; > + > + if (pu == 0 && pd == 0) { > + *pullup = 0; > + *enable = MTK_DISABLE; > + } else if (pu == 1 && pd == 0) { > + *pullup = 1; > + *enable = MTK_ENABLE; > + } else if (pu == 0 && pd == 1) { > + *pullup = 0; > + *enable = MTK_ENABLE; > + } else > + err = -EINVAL; > + > +out: > + return err; > +} > + > +static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 *pullup, u32 *enable) > +{ > + int err; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup); > + if (err) > + goto out; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable); > + > +out: > + return err; > +} > + > +static int mtk_pinconf_bias_get_pupd_r1_r0(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 *pullup, u32 *enable) > +{ > + int err, r0, r1; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, pullup); > + if (err) > + goto out; > + /* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */ > + *pullup = !(*pullup); > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &r0); > + if (err) > + goto out; > + > + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &r1); > + if (err) > + goto out; > + > + if ((r1 == 0) && (r0 == 0)) > + *enable = MTK_PUPD_SET_R1R0_00; > + else if ((r1 == 0) && (r0 == 1)) > + *enable = MTK_PUPD_SET_R1R0_01; > + else if ((r1 == 1) && (r0 == 0)) > + *enable = MTK_PUPD_SET_R1R0_10; > + else if ((r1 == 1) && (r0 == 1)) > + *enable = MTK_PUPD_SET_R1R0_11; > + else > + err = -EINVAL; > + > +out: > + return err; > +} > + > +int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 pullup, u32 arg) > +{ > + int err; > + > + err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg); > + if (!err) > + goto out; > + > + err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc, pullup, arg); > + if (!err) > + goto out; > + > + err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg); > + > +out: > + return err; > +} > + > +int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 *pullup, u32 *enable) > +{ > + int err; > + > + err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable); > + if (!err) > + goto out; > + > + err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc, pullup, enable); > + if (!err) > + goto out; > + > + err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable); > + > +out: > + return err; > +} > + > /* Revision 0 */ > int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, > const struct mtk_pin_desc *desc, u32 arg) > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h > index 75d0e07..27df087 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h > @@ -216,6 +216,11 @@ struct mtk_pin_soc { > int (*bias_get)(struct mtk_pinctrl *hw, > const struct mtk_pin_desc *desc, bool pullup, int *res); > > + int (*bias_set_combo)(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, u32 pullup, u32 arg); > + int (*bias_get_combo)(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, u32 *pullup, u32 *arg); > + > int (*drive_set)(struct mtk_pinctrl *hw, > const struct mtk_pin_desc *desc, u32 arg); > int (*drive_get)(struct mtk_pinctrl *hw, > @@ -277,6 +282,12 @@ int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw, > int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, > const struct mtk_pin_desc *desc, bool pullup, > int *res); > +int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 pullup, u32 enable); > +int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, > + const struct mtk_pin_desc *desc, > + u32 *pullup, u32 *enable); > > int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, > const struct mtk_pin_desc *desc, u32 arg); > diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c > index d09a726..115ebc1 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-paris.c > +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c > @@ -78,7 +78,7 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, > { > struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev); > u32 param = pinconf_to_config_param(*config); > - int err, reg, ret = 1; > + int pullup, err, reg, ret = 1; > const struct mtk_pin_desc *desc; > > if (pin >= hw->soc->npins) { > @@ -89,22 +89,31 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, > > switch (param) { > case PIN_CONFIG_BIAS_DISABLE: > - if (hw->soc->bias_disable_get) > - err = hw->soc->bias_disable_get(hw, desc, &ret); > - else > - err = -ENOTSUPP; > - break; > case PIN_CONFIG_BIAS_PULL_UP: > - if (hw->soc->bias_get) > - err = hw->soc->bias_get(hw, desc, 1, &ret); > - else > - err = -ENOTSUPP; > - break; > case PIN_CONFIG_BIAS_PULL_DOWN: > - if (hw->soc->bias_get) > - err = hw->soc->bias_get(hw, desc, 0, &ret); > - else > + if (hw->soc->bias_get_combo) { > + err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret); > + if (err) > + goto out; > + if (param == PIN_CONFIG_BIAS_DISABLE) { > + if (ret == MTK_PUPD_SET_R1R0_00) > + ret = MTK_DISABLE; > + } else if (param == PIN_CONFIG_BIAS_PULL_UP) { > + /* When desire to get pull-up value, return > + * error if current setting is pull-down > + */ > + if (!pullup) > + err = -EINVAL; > + } else if (param == PIN_CONFIG_BIAS_PULL_DOWN) { > + /* When desire to get pull-down value, return > + * error if current setting is pull-up > + */ > + if (pullup) > + err = -EINVAL; > + } > + } else { > err = -ENOTSUPP; > + } > break; > case PIN_CONFIG_SLEW_RATE: > err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SR, &ret); > @@ -196,20 +205,20 @@ static int mtk_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, > > switch ((u32)param) { > case PIN_CONFIG_BIAS_DISABLE: > - if (hw->soc->bias_disable_set) > - err = hw->soc->bias_disable_set(hw, desc); > + if (hw->soc->bias_set_combo) > + err = hw->soc->bias_set_combo(hw, desc, 0, MTK_DISABLE); > else > err = -ENOTSUPP; > break; > case PIN_CONFIG_BIAS_PULL_UP: > - if (hw->soc->bias_set) > - err = hw->soc->bias_set(hw, desc, 1); > + if (hw->soc->bias_set_combo) > + err = hw->soc->bias_set_combo(hw, desc, 1, arg); > else > err = -ENOTSUPP; > break; > case PIN_CONFIG_BIAS_PULL_DOWN: > - if (hw->soc->bias_set) > - err = hw->soc->bias_set(hw, desc, 0); > + if (hw->soc->bias_set_combo) > + err = hw->soc->bias_set_combo(hw, desc, 0, arg); > else > err = -ENOTSUPP; > break; > -- > 1.8.1.1.dirty
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c index 7fae397..905dae8c 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c @@ -1072,10 +1072,8 @@ .gpio_m = 0, .base_names = mt6765_pinctrl_register_base_names, .nbase_names = ARRAY_SIZE(mt6765_pinctrl_register_base_names), - .bias_disable_set = mtk_pinconf_bias_disable_set, - .bias_disable_get = mtk_pinconf_bias_disable_get, - .bias_set = mtk_pinconf_bias_set, - .bias_get = mtk_pinconf_bias_get, + .bias_set_combo = mtk_pinconf_bias_set_combo, + .bias_get_combo = mtk_pinconf_bias_get_combo, .drive_set = mtk_pinconf_drive_set_raw, .drive_get = mtk_pinconf_drive_get_raw, .adv_pull_get = mtk_pinconf_adv_pull_get, diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8183.c b/drivers/pinctrl/mediatek/pinctrl-mt8183.c index 4eca818..6031833 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mt8183.c +++ b/drivers/pinctrl/mediatek/pinctrl-mt8183.c @@ -556,10 +556,8 @@ .gpio_m = 0, .base_names = mt8183_pinctrl_register_base_names, .nbase_names = ARRAY_SIZE(mt8183_pinctrl_register_base_names), - .bias_disable_set = mtk_pinconf_bias_disable_set_rev1, - .bias_disable_get = mtk_pinconf_bias_disable_get_rev1, - .bias_set = mtk_pinconf_bias_set_rev1, - .bias_get = mtk_pinconf_bias_get_rev1, + .bias_set_combo = mtk_pinconf_bias_set_combo, + .bias_get_combo = mtk_pinconf_bias_get_combo, .drive_set = mtk_pinconf_drive_set_rev1, .drive_get = mtk_pinconf_drive_get_rev1, .adv_pull_get = mtk_pinconf_adv_pull_get, diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index 2247eae..1da9425 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -6,6 +6,7 @@ * */ +#include <dt-bindings/pinctrl/mt65xx.h> #include <linux/device.h> #include <linux/err.h> #include <linux/gpio/driver.h> @@ -517,6 +518,226 @@ int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, return 0; } +/* Combo for the following pull register type: + * 1. PU + PD + * 2. PULLSEL + PULLEN + * 3. PUPD + R0 + R1 + */ +static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, pu, pd; + + if (arg == MTK_DISABLE) { + pu = 0; + pd = 0; + } else if ((arg == MTK_ENABLE) && pullup) { + pu = 1; + pd = 0; + } else if ((arg == MTK_ENABLE) && !pullup) { + pu = 0; + pd = 1; + } else { + err = -EINVAL; + goto out; + } + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu); + if (err) + goto out; + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); + +out: + return err; +} + +static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, enable; + + if (arg == MTK_DISABLE) + enable = 0; + else if (arg == MTK_ENABLE) + enable = 1; + else { + err = -EINVAL; + goto out; + } + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable); + if (err) + goto out; + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup); + +out: + return err; +} + +static int mtk_pinconf_bias_set_pupd_r1_r0(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, r0, r1; + + if ((arg == MTK_DISABLE) || (arg == MTK_PUPD_SET_R1R0_00)) { + pullup = 0; + r0 = 0; + r1 = 0; + } else if (arg == MTK_PUPD_SET_R1R0_01) { + r0 = 1; + r1 = 0; + } else if (arg == MTK_PUPD_SET_R1R0_10) { + r0 = 0; + r1 = 1; + } else if (arg == MTK_PUPD_SET_R1R0_11) { + r0 = 1; + r1 = 1; + } else { + err = -EINVAL; + goto out; + } + + /* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */ + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, !pullup); + if (err) + goto out; + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, r0); + if (err) + goto out; + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1, r1); + +out: + return err; +} + +static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err, pu, pd; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &pu); + if (err) + goto out; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd); + if (err) + goto out; + + if (pu == 0 && pd == 0) { + *pullup = 0; + *enable = MTK_DISABLE; + } else if (pu == 1 && pd == 0) { + *pullup = 1; + *enable = MTK_ENABLE; + } else if (pu == 0 && pd == 1) { + *pullup = 0; + *enable = MTK_ENABLE; + } else + err = -EINVAL; + +out: + return err; +} + +static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup); + if (err) + goto out; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable); + +out: + return err; +} + +static int mtk_pinconf_bias_get_pupd_r1_r0(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err, r0, r1; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, pullup); + if (err) + goto out; + /* MTK HW PUPD bit: 1 for pull-down, 0 for pull-up */ + *pullup = !(*pullup); + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &r0); + if (err) + goto out; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &r1); + if (err) + goto out; + + if ((r1 == 0) && (r0 == 0)) + *enable = MTK_PUPD_SET_R1R0_00; + else if ((r1 == 0) && (r0 == 1)) + *enable = MTK_PUPD_SET_R1R0_01; + else if ((r1 == 1) && (r0 == 0)) + *enable = MTK_PUPD_SET_R1R0_10; + else if ((r1 == 1) && (r0 == 1)) + *enable = MTK_PUPD_SET_R1R0_11; + else + err = -EINVAL; + +out: + return err; +} + +int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err; + + err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg); + if (!err) + goto out; + + err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc, pullup, arg); + if (!err) + goto out; + + err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg); + +out: + return err; +} + +int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err; + + err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable); + if (!err) + goto out; + + err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc, pullup, enable); + if (!err) + goto out; + + err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable); + +out: + return err; +} + /* Revision 0 */ int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 arg) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 75d0e07..27df087 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -216,6 +216,11 @@ struct mtk_pin_soc { int (*bias_get)(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, bool pullup, int *res); + int (*bias_set_combo)(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, u32 pullup, u32 arg); + int (*bias_get_combo)(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, u32 *pullup, u32 *arg); + int (*drive_set)(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 arg); int (*drive_get)(struct mtk_pinctrl *hw, @@ -277,6 +282,12 @@ int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw, int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, bool pullup, int *res); +int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 enable); +int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable); int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 arg); diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index d09a726..115ebc1 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -78,7 +78,7 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, { struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev); u32 param = pinconf_to_config_param(*config); - int err, reg, ret = 1; + int pullup, err, reg, ret = 1; const struct mtk_pin_desc *desc; if (pin >= hw->soc->npins) { @@ -89,22 +89,31 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, switch (param) { case PIN_CONFIG_BIAS_DISABLE: - if (hw->soc->bias_disable_get) - err = hw->soc->bias_disable_get(hw, desc, &ret); - else - err = -ENOTSUPP; - break; case PIN_CONFIG_BIAS_PULL_UP: - if (hw->soc->bias_get) - err = hw->soc->bias_get(hw, desc, 1, &ret); - else - err = -ENOTSUPP; - break; case PIN_CONFIG_BIAS_PULL_DOWN: - if (hw->soc->bias_get) - err = hw->soc->bias_get(hw, desc, 0, &ret); - else + if (hw->soc->bias_get_combo) { + err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret); + if (err) + goto out; + if (param == PIN_CONFIG_BIAS_DISABLE) { + if (ret == MTK_PUPD_SET_R1R0_00) + ret = MTK_DISABLE; + } else if (param == PIN_CONFIG_BIAS_PULL_UP) { + /* When desire to get pull-up value, return + * error if current setting is pull-down + */ + if (!pullup) + err = -EINVAL; + } else if (param == PIN_CONFIG_BIAS_PULL_DOWN) { + /* When desire to get pull-down value, return + * error if current setting is pull-up + */ + if (pullup) + err = -EINVAL; + } + } else { err = -ENOTSUPP; + } break; case PIN_CONFIG_SLEW_RATE: err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SR, &ret); @@ -196,20 +205,20 @@ static int mtk_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, switch ((u32)param) { case PIN_CONFIG_BIAS_DISABLE: - if (hw->soc->bias_disable_set) - err = hw->soc->bias_disable_set(hw, desc); + if (hw->soc->bias_set_combo) + err = hw->soc->bias_set_combo(hw, desc, 0, MTK_DISABLE); else err = -ENOTSUPP; break; case PIN_CONFIG_BIAS_PULL_UP: - if (hw->soc->bias_set) - err = hw->soc->bias_set(hw, desc, 1); + if (hw->soc->bias_set_combo) + err = hw->soc->bias_set_combo(hw, desc, 1, arg); else err = -ENOTSUPP; break; case PIN_CONFIG_BIAS_PULL_DOWN: - if (hw->soc->bias_set) - err = hw->soc->bias_set(hw, desc, 0); + if (hw->soc->bias_set_combo) + err = hw->soc->bias_set_combo(hw, desc, 0, arg); else err = -ENOTSUPP; break;