The External Interrupt Controller (EINTC) on all of the supported
MediaTek SoCs does support input debouncing, but not all of them
index the debounce time values (DBNC_SETTING registers) the same way.
Before this change, in some cases, as an example, requesting a debounce
time of 16 milliseconds would mistakenly set the relative DBNC_SETTING
register to 0x2, resulting in a way shorter debounce time of 500uS.
To fix the aforementioned issue, define three different debounce_time
arrays, reflecting the correct register index for each value and for
each register index variant, and make sure that each SoC pinctrl
driver uses the right one.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
I know, this commit is a good candidate to get a Fixes tag, but I
couldn't find a way to actually do that cleanly...
The only way would be to split this in one commit for each pinctrl
driver, but that would result in a series containing 21 commits, of
which 20 are one-liners... and that didn't look right.
drivers/pinctrl/mediatek/mtk-eint.c | 31 +++++++++++++++++++----
drivers/pinctrl/mediatek/mtk-eint.h | 6 +++++
drivers/pinctrl/mediatek/pinctrl-mt2701.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt2712.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt6765.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt6779.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt6795.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt7622.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt7623.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt7629.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt7986.c | 2 ++
drivers/pinctrl/mediatek/pinctrl-mt8127.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8135.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8167.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8173.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8183.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8186.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8188.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8192.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8195.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8365.c | 1 +
drivers/pinctrl/mediatek/pinctrl-mt8516.c | 1 +
22 files changed, 53 insertions(+), 5 deletions(-)
diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
index fff0c05a1425..3e205318b54e 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.c
+++ b/drivers/pinctrl/mediatek/mtk-eint.c
@@ -24,6 +24,7 @@
#define MTK_EINT_EDGE_SENSITIVE 0
#define MTK_EINT_LEVEL_SENSITIVE 1
#define MTK_EINT_DBNC_SET_DBNC_BITS 4
+#define MTK_EINT_DBNC_MAX 16
#define MTK_EINT_DBNC_RST_BIT (0x1 << 1)
#define MTK_EINT_DBNC_SET_EN (0x1 << 0)
@@ -48,6 +49,18 @@ static const struct mtk_eint_regs mtk_generic_eint_regs = {
.dbnc_clr = 0x700,
};
+const unsigned int debounce_time_mt2701[] = {
+ 500, 1000, 16000, 32000, 64000, 128000, 256000, 0
+};
+
+const unsigned int debounce_time_mt6765[] = {
+ 125, 250, 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
+};
+
+const unsigned int debounce_time_mt6795[] = {
+ 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
+};
+
static void __iomem *mtk_eint_get_offset(struct mtk_eint *eint,
unsigned int eint_num,
unsigned int offset)
@@ -402,10 +415,11 @@ int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num,
int virq, eint_offset;
unsigned int set_offset, bit, clr_bit, clr_offset, rst, i, unmask,
dbnc;
- static const unsigned int debounce_time[] = {500, 1000, 16000, 32000,
- 64000, 128000, 256000};
struct irq_data *d;
+ if (!eint->hw->db_time)
+ return -EOPNOTSUPP;
+
virq = irq_find_mapping(eint->domain, eint_num);
eint_offset = (eint_num % 4) * 8;
d = irq_get_irq_data(virq);
@@ -416,9 +430,9 @@ int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num,
if (!mtk_eint_can_en_debounce(eint, eint_num))
return -EINVAL;
- dbnc = ARRAY_SIZE(debounce_time);
- for (i = 0; i < ARRAY_SIZE(debounce_time); i++) {
- if (debounce <= debounce_time[i]) {
+ dbnc = eint->num_db_time;
+ for (i = 0; i < eint->num_db_time; i++) {
+ if (debounce <= eint->hw->db_time[i]) {
dbnc = i;
break;
}
@@ -492,6 +506,13 @@ int mtk_eint_do_init(struct mtk_eint *eint)
if (!eint->domain)
return -ENOMEM;
+ if (eint->hw->db_time) {
+ for (i = 0; i < MTK_EINT_DBNC_MAX; i++)
+ if (eint->hw->db_time[i] == 0)
+ break;
+ eint->num_db_time = i;
+ }
+
mtk_eint_hw_init(eint);
for (i = 0; i < eint->hw->ap_num; i++) {
int virq = irq_create_mapping(eint->domain, i);
diff --git a/drivers/pinctrl/mediatek/mtk-eint.h b/drivers/pinctrl/mediatek/mtk-eint.h
index 48468d0fae68..6139b16cd225 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.h
+++ b/drivers/pinctrl/mediatek/mtk-eint.h
@@ -37,8 +37,13 @@ struct mtk_eint_hw {
u8 ports;
unsigned int ap_num;
unsigned int db_cnt;
+ const unsigned int *db_time;
};
+extern const unsigned int debounce_time_mt2701[];
+extern const unsigned int debounce_time_mt6765[];
+extern const unsigned int debounce_time_mt6795[];
+
struct mtk_eint;
struct mtk_eint_xt {
@@ -62,6 +67,7 @@ struct mtk_eint {
/* Used to fit into various EINT device */
const struct mtk_eint_hw *hw;
const struct mtk_eint_regs *regs;
+ u16 num_db_time;
/* Used to fit into various pinctrl device */
void *pctl;
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt2701.c b/drivers/pinctrl/mediatek/pinctrl-mt2701.c
index d1583b4fdd9d..b185538452a0 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt2701.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt2701.c
@@ -518,6 +518,7 @@ static const struct mtk_pinctrl_devdata mt2701_pinctrl_data = {
.ports = 6,
.ap_num = 169,
.db_cnt = 16,
+ .db_time = debounce_time_mt2701,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt2712.c b/drivers/pinctrl/mediatek/pinctrl-mt2712.c
index b921068f9e69..730a496848dc 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt2712.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt2712.c
@@ -567,6 +567,7 @@ static const struct mtk_pinctrl_devdata mt2712_pinctrl_data = {
.ports = 8,
.ap_num = 229,
.db_cnt = 40,
+ .db_time = debounce_time_mt2701,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
index c57b19fcda03..f6ec41eb6e0c 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
@@ -1062,6 +1062,7 @@ static const struct mtk_eint_hw mt6765_eint_hw = {
.ports = 6,
.ap_num = 160,
.db_cnt = 13,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt6765_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6779.c b/drivers/pinctrl/mediatek/pinctrl-mt6779.c
index 4ddf8bda6827..62d4f5ad6737 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt6779.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt6779.c
@@ -737,6 +737,7 @@ static const struct mtk_eint_hw mt6779_eint_hw = {
.ports = 6,
.ap_num = 195,
.db_cnt = 13,
+ .db_time = debounce_time_mt2701,
};
static const struct mtk_pin_soc mt6779_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6795.c b/drivers/pinctrl/mediatek/pinctrl-mt6795.c
index f90152261a0f..01e855ccd4dd 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt6795.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt6795.c
@@ -475,6 +475,7 @@ static const struct mtk_eint_hw mt6795_eint_hw = {
.ports = 7,
.ap_num = 224,
.db_cnt = 32,
+ .db_time = debounce_time_mt6795,
};
static const unsigned int mt6795_pull_type[] = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7622.c b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
index 68eee881ee3d..3c1148d59eff 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7622.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
@@ -846,6 +846,7 @@ static const struct mtk_eint_hw mt7622_eint_hw = {
.ports = 7,
.ap_num = ARRAY_SIZE(mt7622_pins),
.db_cnt = 20,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt7622_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7623.c b/drivers/pinctrl/mediatek/pinctrl-mt7623.c
index b8d9d31db74f..699977074697 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7623.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7623.c
@@ -1369,6 +1369,7 @@ static const struct mtk_eint_hw mt7623_eint_hw = {
.ports = 6,
.ap_num = 169,
.db_cnt = 20,
+ .db_time = debounce_time_mt2701,
};
static struct mtk_pin_soc mt7623_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7629.c b/drivers/pinctrl/mediatek/pinctrl-mt7629.c
index b5f0fa43245f..2ce411cb9c6e 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7629.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7629.c
@@ -402,6 +402,7 @@ static const struct mtk_eint_hw mt7629_eint_hw = {
.ports = 7,
.ap_num = ARRAY_SIZE(mt7629_pins),
.db_cnt = 16,
+ .db_time = debounce_time_mt2701,
};
static struct mtk_pin_soc mt7629_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7986.c b/drivers/pinctrl/mediatek/pinctrl-mt7986.c
index 95f32e62e02f..8e2da08e88fd 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7986.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7986.c
@@ -844,6 +844,7 @@ static const struct mtk_eint_hw mt7986a_eint_hw = {
.ports = 7,
.ap_num = ARRAY_SIZE(mt7986a_pins),
.db_cnt = 16,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_eint_hw mt7986b_eint_hw = {
@@ -851,6 +852,7 @@ static const struct mtk_eint_hw mt7986b_eint_hw = {
.ports = 7,
.ap_num = ARRAY_SIZE(mt7986b_pins),
.db_cnt = 16,
+ .db_time = debounce_time_mt6765,
};
static struct mtk_pin_soc mt7986a_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8127.c b/drivers/pinctrl/mediatek/pinctrl-mt8127.c
index 91c530e7b00e..e8772dcfe69e 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8127.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8127.c
@@ -286,6 +286,7 @@ static const struct mtk_pinctrl_devdata mt8127_pinctrl_data = {
.ports = 6,
.ap_num = 143,
.db_cnt = 16,
+ .db_time = debounce_time_mt2701,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8135.c b/drivers/pinctrl/mediatek/pinctrl-mt8135.c
index 562846756517..cdb0252071fb 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8135.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8135.c
@@ -315,6 +315,7 @@ static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
.ports = 6,
.ap_num = 192,
.db_cnt = 16,
+ .db_time = debounce_time_mt2701,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8167.c b/drivers/pinctrl/mediatek/pinctrl-mt8167.c
index 825167f5d020..866da2c4a890 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8167.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8167.c
@@ -319,6 +319,7 @@ static const struct mtk_pinctrl_devdata mt8167_pinctrl_data = {
.ports = 6,
.ap_num = 169,
.db_cnt = 64,
+ .db_time = debounce_time_mt6795,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8173.c b/drivers/pinctrl/mediatek/pinctrl-mt8173.c
index 1d7d11a32e7d..37d8cec1c3ce 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8173.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8173.c
@@ -327,6 +327,7 @@ static const struct mtk_pinctrl_devdata mt8173_pinctrl_data = {
.ports = 6,
.ap_num = 224,
.db_cnt = 16,
+ .db_time = debounce_time_mt2701,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8183.c b/drivers/pinctrl/mediatek/pinctrl-mt8183.c
index fecb1e64fff4..ddc48b725c22 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8183.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8183.c
@@ -545,6 +545,7 @@ static const struct mtk_eint_hw mt8183_eint_hw = {
.ports = 6,
.ap_num = 212,
.db_cnt = 13,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt8183_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8186.c b/drivers/pinctrl/mediatek/pinctrl-mt8186.c
index a4dd5197abc1..a02f7c326970 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8186.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8186.c
@@ -1222,6 +1222,7 @@ static const struct mtk_eint_hw mt8186_eint_hw = {
.ports = 7,
.ap_num = 217,
.db_cnt = 32,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt8186_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8188.c b/drivers/pinctrl/mediatek/pinctrl-mt8188.c
index d0e75c1b4417..6a3d0126288e 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8188.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8188.c
@@ -1625,6 +1625,7 @@ static const struct mtk_eint_hw mt8188_eint_hw = {
.ports = 7,
.ap_num = 225,
.db_cnt = 32,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt8188_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8192.c b/drivers/pinctrl/mediatek/pinctrl-mt8192.c
index 78c02b7c81f0..9695f4ec6aba 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8192.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8192.c
@@ -1371,6 +1371,7 @@ static const struct mtk_eint_hw mt8192_eint_hw = {
.ports = 7,
.ap_num = 224,
.db_cnt = 32,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_reg_calc mt8192_reg_cals[PINCTRL_PIN_REG_MAX] = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8195.c b/drivers/pinctrl/mediatek/pinctrl-mt8195.c
index 563693d3d4c2..89557c7ed2ab 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8195.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8195.c
@@ -935,6 +935,7 @@ static const struct mtk_eint_hw mt8195_eint_hw = {
.ports = 7,
.ap_num = 225,
.db_cnt = 32,
+ .db_time = debounce_time_mt6765,
};
static const struct mtk_pin_soc mt8195_data = {
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8365.c b/drivers/pinctrl/mediatek/pinctrl-mt8365.c
index 57f37a294063..e31b89b226b7 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8365.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8365.c
@@ -453,6 +453,7 @@ static const struct mtk_pinctrl_devdata mt8365_pinctrl_data = {
.ports = 5,
.ap_num = 160,
.db_cnt = 160,
+ .db_time = debounce_time_mt6765,
},
};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8516.c b/drivers/pinctrl/mediatek/pinctrl-mt8516.c
index 939a1932b8dc..e929339dd2cb 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt8516.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt8516.c
@@ -319,6 +319,7 @@ static const struct mtk_pinctrl_devdata mt8516_pinctrl_data = {
.ports = 6,
.ap_num = 169,
.db_cnt = 64,
+ .db_time = debounce_time_mt6795,
},
};
--
2.38.1
[PATCH] pinctrl: mediatek: Fix EINT pins input debounce time configuration
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- Subject: [PATCH] pinctrl: mediatek: Fix EINT pins input debounce time configuration
- From: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
- Date: Fri, 11 Nov 2022 10:41:06 +0100
- Follow-Ups:
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- From: Linus Walleij
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