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Input: mtk-pmic-keys - add support for MT6358

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MT6358 pmic keys behave differently than mt6397 and mt6323: there are
two interrupts per key: one for press, the other one for release (_r)

Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20220121140323.4080640-4-mkorpershoek@baylibre.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Mattijs Korpershoek 2022-02-07 21:44:26 -08:00 committed by Dmitry Torokhov
parent 41799efdb3
commit 994673dc66
1 changed files with 46 additions and 2 deletions
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48
drivers/input/keyboard/mtk-pmic-keys.c
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@ -9,6 +9,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/mt6323/registers.h>
#include <linux/mfd/mt6358/registers.h>
#include <linux/mfd/mt6397/core.h>
#include <linux/mfd/mt6397/registers.h>
#include <linux/module.h>
@ -74,11 +75,22 @@ static const struct mtk_pmic_regs mt6323_regs = {
.pmic_rst_reg = MT6323_TOP_RST_MISC,
};
static const struct mtk_pmic_regs mt6358_regs = {
.keys_regs[MTK_PMIC_PWRKEY_INDEX] =
MTK_PMIC_KEYS_REGS(MT6358_TOPSTATUS,
0x2, MT6358_PSC_TOP_INT_CON0, 0x5),
.keys_regs[MTK_PMIC_HOMEKEY_INDEX] =
MTK_PMIC_KEYS_REGS(MT6358_TOPSTATUS,
0x8, MT6358_PSC_TOP_INT_CON0, 0xa),
.pmic_rst_reg = MT6358_TOP_RST_MISC,
};
struct mtk_pmic_keys_info {
struct mtk_pmic_keys *keys;
const struct mtk_pmic_keys_regs *regs;
unsigned int keycode;
int irq;
int irq_r; /* optional: release irq if different */
bool wakeup:1;
};
@ -188,6 +200,18 @@ static int mtk_pmic_key_setup(struct mtk_pmic_keys *keys,
return ret;
}
if (info->irq_r > 0) {
ret = devm_request_threaded_irq(keys->dev, info->irq_r, NULL,
mtk_pmic_keys_irq_handler_thread,
IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
"mtk-pmic-keys", info);
if (ret) {
dev_err(keys->dev, "Failed to request IRQ_r: %d: %d\n",
info->irq, ret);
return ret;
}
}
input_set_capability(keys->input_dev, EV_KEY, info->keycode);
return 0;
@ -199,8 +223,11 @@ static int __maybe_unused mtk_pmic_keys_suspend(struct device *dev)
int index;
for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
if (keys->keys[index].wakeup)
if (keys->keys[index].wakeup) {
enable_irq_wake(keys->keys[index].irq);
if (keys->keys[index].irq_r > 0)
enable_irq_wake(keys->keys[index].irq_r);
}
}
return 0;
@ -212,8 +239,11 @@ static int __maybe_unused mtk_pmic_keys_resume(struct device *dev)
int index;
for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
if (keys->keys[index].wakeup)
if (keys->keys[index].wakeup) {
disable_irq_wake(keys->keys[index].irq);
if (keys->keys[index].irq_r > 0)
disable_irq_wake(keys->keys[index].irq_r);
}
}
return 0;
@ -229,6 +259,9 @@ static const struct of_device_id of_mtk_pmic_keys_match_tbl[] = {
}, {
.compatible = "mediatek,mt6323-keys",
.data = &mt6323_regs,
}, {
.compatible = "mediatek,mt6358-keys",
.data = &mt6358_regs,
}, {
/* sentinel */
}
@ -242,6 +275,7 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev)
struct mt6397_chip *pmic_chip = dev_get_drvdata(pdev->dev.parent);
struct device_node *node = pdev->dev.of_node, *child;
static const char *const irqnames[] = { "powerkey", "homekey" };
static const char *const irqnames_r[] = { "powerkey_r", "homekey_r" };
struct mtk_pmic_keys *keys;
const struct mtk_pmic_regs *mtk_pmic_regs;
struct input_dev *input_dev;
@ -285,6 +319,16 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev)
return keys->keys[index].irq;
}
if (of_device_is_compatible(node, "mediatek,mt6358-keys")) {
keys->keys[index].irq_r = platform_get_irq_byname(pdev,
irqnames_r[index]);
if (keys->keys[index].irq_r < 0) {
of_node_put(child);
return keys->keys[index].irq_r;
}
}
error = of_property_read_u32(child,
"linux,keycodes", &keys->keys[index].keycode);
if (error) {