5.4-stable review patch. If anyone has any objections, please let me know.
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From: Light Hsieh light.hsieh@mediatek.com
[ Upstream commit 5f755e1f1efe5ca3b475b14169e6e85bf1411bb5 ]
MediaTek's smartphone project actual usage does need to know current value (in mA) in procedure of finding the best driving setting. The steps in the procedure is like as follow:
1. set driving setting field in setting register as 0, measure waveform, perform test, and etc. 2. set driving setting field in setting register as 1, measure waveform, perform test, and etc. ... n. set driving setting field in setting register as n-1, measure waveform, perform test, and etc. Check the results of steps 1~n and adopt the setting that get best result.
This procedure does need to know the mapping between current to register value. Therefore, setting driving without mapping current is more practical for MediaTek's smartphone usage.
Signed-off-by: Light Hsieh light.hsieh@mediatek.com Link: https://lore.kernel.org/r/1579675994-7001-2-git-send-email-light.hsieh@media... Acked-by: Sean Wang sean.wang@kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org Stable-dep-of: c5d3b64c568a ("pinctrl: mediatek: paris: Rework support for PIN_CONFIG_{INPUT,OUTPUT}_ENABLE") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/mediatek/pinctrl-mt6765.c | 4 ++-- drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 12 ++++++++++++ drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h | 5 +++++ 3 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c index 32451e8693be7..12122646bbc28 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c @@ -1077,8 +1077,8 @@ static const struct mtk_pin_soc mt6765_data = { .bias_disable_get = mtk_pinconf_bias_disable_get, .bias_set = mtk_pinconf_bias_set, .bias_get = mtk_pinconf_bias_get, - .drive_set = mtk_pinconf_drive_set_rev1, - .drive_get = mtk_pinconf_drive_get_rev1, + .drive_set = mtk_pinconf_drive_set_raw, + .drive_get = mtk_pinconf_drive_get_raw, .adv_pull_get = mtk_pinconf_adv_pull_get, .adv_pull_set = mtk_pinconf_adv_pull_set, }; diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index 2795d0fd0f5bd..fb87feec7bd3f 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -612,6 +612,18 @@ int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw, return 0; }
+int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, u32 arg) +{ + return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV, arg); +} + +int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, int *val) +{ + return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, val); +} + int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, bool pullup, u32 arg) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 1b7da42aa1d53..75d0e0712c03f 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -288,6 +288,11 @@ int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw, int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, int *val);
+int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, u32 arg); +int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, int *val); + int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, bool pullup, u32 arg);