Patch "pinctrl: mediatek: Supporting driving setting without mapping current to register value" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    pinctrl: mediatek: Supporting driving setting without mapping current to register value

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pinctrl-mediatek-supporting-driving-setting-without-.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 449c685acd69dbff63f70943cbcb54b1694d9fc6
Author: Light Hsieh <light.hsieh@xxxxxxxxxxxx>
Date:   Wed Jan 22 14:53:10 2020 +0800

    pinctrl: mediatek: Supporting driving setting without mapping current to register value
    
    [ 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@xxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/1579675994-7001-2-git-send-email-light.hsieh@xxxxxxxxxxxx
    Acked-by: Sean Wang <sean.wang@xxxxxxxxxx>
    Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
    Stable-dep-of: c5d3b64c568a ("pinctrl: mediatek: paris: Rework support for PIN_CONFIG_{INPUT,OUTPUT}_ENABLE")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

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);