bd72c996b7
* sunxi-6.0: initial state: add megous patches to series * sunxi-6.0: Switch to v6.0.1 * wifi: Limit the version 6.0 for Realtek 88x2cs chipsets * Adjust kernel configs * Remove not needed patches * Adjust broken patches Co-authored-by: Igor <igor@armbian.com>
79 lines
2.3 KiB
Diff
79 lines
2.3 KiB
Diff
From 26d56481005261e53cad3cb64443f49131c0aca4 Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megi@xff.cz>
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Date: Sun, 3 Apr 2022 16:25:10 +0200
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Subject: [PATCH 369/486] input: pinephone-keyboard: Add support for VBAT
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regulator
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This needs to be enabled for stable usage. If not, the keyboard
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MCU may be browning out when phone's VBAT is low.
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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drivers/input/keyboard/pinephone-keyboard.c | 22 +++++++++++++++++++++
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1 file changed, 22 insertions(+)
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diff --git a/drivers/input/keyboard/pinephone-keyboard.c b/drivers/input/keyboard/pinephone-keyboard.c
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index 7d2e16e58..b1e951cbb 100644
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--- a/drivers/input/keyboard/pinephone-keyboard.c
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+++ b/drivers/input/keyboard/pinephone-keyboard.c
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@@ -8,6 +8,7 @@
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#include <linux/input/matrix_keypad.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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+#include <linux/regulator/consumer.h>
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#define DRV_NAME "pinephone-keyboard"
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@@ -139,6 +140,7 @@ static const struct matrix_keymap_data ppkb_default_keymap_data = {
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struct pinephone_keyboard {
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struct i2c_adapter adapter;
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+ struct regulator *vbat_supply;
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struct input_dev *input;
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unsigned short *fn_keymap;
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u8 crc_table[CRC8_TABLE_SIZE];
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@@ -371,6 +373,11 @@ static int ppkb_probe(struct i2c_client *client)
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i2c_set_clientdata(client, ppkb);
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+ ppkb->vbat_supply = devm_regulator_get(dev, "vbat");
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+ if (IS_ERR(ppkb->vbat_supply))
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+ return dev_err_probe(dev, PTR_ERR(ppkb->vbat_supply),
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+ "Failed to get vbat_supply\n");
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+
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i2c_bus = of_get_child_by_name(dev->of_node, "i2c-bus");
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if (i2c_bus) {
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ppkb->adapter.owner = THIS_MODULE;
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@@ -426,6 +433,20 @@ static int ppkb_probe(struct i2c_client *client)
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if (ret)
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return dev_err_probe(dev, ret, "Failed to request IRQ\n");
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+ ret = regulator_enable(ppkb->vbat_supply);
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+ if (ret)
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+ return dev_err_probe(dev, ret,
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+ "Failed to enable keyboard vbat supply\n");
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+
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+ return 0;
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+}
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+
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+static int ppkb_remove(struct i2c_client *client)
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+{
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+ struct pinephone_keyboard *ppkb = i2c_get_clientdata(client);
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+
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+ regulator_disable(ppkb->vbat_supply);
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+
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return 0;
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}
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@@ -437,6 +458,7 @@ MODULE_DEVICE_TABLE(of, ppkb_of_match);
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static struct i2c_driver ppkb_driver = {
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.probe_new = ppkb_probe,
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+ .remove = ppkb_remove,
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.driver = {
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.name = DRV_NAME,
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.of_match_table = ppkb_of_match,
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--
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2.35.3
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