[SQUASH] input: misc: Add support for max77620's onoff block
input: misc: Max77620 ON/OFF Block change to button press to key_sleep for linux. input: misc: max77620-onoff: Ignore button release interrupt if the accompanying press was reported to userspace Caused some userspaces to shutdown after wakeup from lp0 sleep if the button was pressed during sleep and not released till after waking. max77620-onoff: Refactor driver - Add `maxim,onoff-keycode` under `onoff` child node to select custom ON/OFF button key code. - Fix button stack at resume. max77620-onoff: Correct regmap max77620-onoff: correct irq priority and names max77620-onoff: clear pending irq on probe Change-Id: I033bd7a26a4e59b2508e90b4d9e42d2d52e5c17e
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Billy Laws authored and 
Thomas Makin committed
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@@ -282,6 +282,13 @@ config INPUT_MAX77693_HAPTIC
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To compile this driver as module, choose M here: the
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module will be called max77693-haptic.
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config INPUT_MAX77620_ONOFF
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tristate "MAX77620 ONOFF support"
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depends on MFD_MAX77620
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help
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Support the ONOFF block of MAX77620 PMICs as an input device
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reporting power button status.
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config INPUT_MAX8925_ONKEY
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tristate "MAX8925 ONKEY support"
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depends on MFD_MAX8925
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@@ -55,6 +55,7 @@ obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o
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obj-$(CONFIG_INPUT_MAX7360_ROTARY) += max7360-rotary.o
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obj-$(CONFIG_INPUT_MAX77650_ONKEY) += max77650-onkey.o
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obj-$(CONFIG_INPUT_MAX77693_HAPTIC) += max77693-haptic.o
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obj-$(CONFIG_INPUT_MAX77620_ONOFF) += max77620-onoff.o
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obj-$(CONFIG_INPUT_MAX8925_ONKEY) += max8925_onkey.o
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obj-$(CONFIG_INPUT_MAX8997_HAPTIC) += max8997_haptic.o
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obj-$(CONFIG_INPUT_MC13783_PWRBUTTON) += mc13783-pwrbutton.o
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@@ -0,0 +1,235 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 Billy Laws
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* Copyright (C) 2020-2022 CTCaer
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*
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* Author:
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* Billy Laws <blaws05@gmail.com>
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* CTCaer <ctcaer@gmail.com>
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*
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* Description:
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* ONOFF driver for MAXIM 77620 charger/power-supply.
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*/
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/max77620.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#define ONOFF_IRQF 2
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#define ONOFF_IRQR 3
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/* MAX77620 IRQ ONOFF interrupts */
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#define MAX77620_IRQ_ONOFF_MRWRN 0
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#define MAX77620_IRQ_ONOFF_EN0_1SEC 1
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#define MAX77620_IRQ_ONOFF_EN0_F 2
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#define MAX77620_IRQ_ONOFF_EN0_R 3
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#define MAX77620_IRQ_ONOFF_LID_F 4
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#define MAX77620_IRQ_ONOFF_LID_R 5
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#define MAX77620_IRQ_ONOFF_ACOK_F 6
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#define MAX77620_IRQ_ONOFF_ACOK_R 7
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struct max77620_onoff {
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struct regmap *rmap;
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struct input_dev *input;
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int irq_f, irq_r;
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unsigned int code;
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bool suspended;
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};
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static const struct regmap_irq max77620_onoff_irqs[] = {
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_MRWRN, 0, MAX77620_IRQ_ONOFF_MRWRN_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_EN0_1SEC, 0, MAX77620_IRQ_ONOFF_EN0_1SEC_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_EN0_F, 0, MAX77620_IRQ_ONOFF_EN0_F_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_EN0_R, 0, MAX77620_IRQ_ONOFF_EN0_R_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_LID_F, 0, MAX77620_IRQ_ONOFF_LID_F_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_LID_R, 0, MAX77620_IRQ_ONOFF_LID_R_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_ACOK_F, 0, MAX77620_IRQ_ONOFF_ACOK_F_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_ONOFF_ACOK_R, 0, MAX77620_IRQ_ONOFF_ACOK_R_MASK),
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};
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static struct regmap_irq_chip max77620_onoff_irq_chip = {
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.name = "max77620-onoff",
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.irqs = max77620_onoff_irqs,
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.num_irqs = ARRAY_SIZE(max77620_onoff_irqs),
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.num_regs = 1,
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.irq_reg_stride = 1,
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.status_base = MAX77620_REG_ONOFFIRQ,
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.mask_base = MAX77620_REG_ONOFFIRQM,
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};
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static irqreturn_t max77620_onoff_handler(int irq, void *data)
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{
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struct max77620_onoff *onoff = data;
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bool pressed = irq == onoff->irq_r;
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/* Skip release report in suspended state */
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if (onoff->suspended && !pressed)
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return IRQ_HANDLED;
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input_report_key(onoff->input, onoff->code, pressed);
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input_sync(onoff->input);
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return IRQ_HANDLED;
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}
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static int max77620_onoff_probe(struct platform_device *pdev)
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{
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struct max77620_onoff *onoff;
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struct device *dev, *parent;
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struct max77620_chip *chip = dev_get_drvdata(pdev->dev.parent);
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struct device_node *np;
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unsigned int code;
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int irq, ret;
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dev = &pdev->dev;
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parent = dev->parent;
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onoff = devm_kzalloc(dev, sizeof(*onoff), GFP_KERNEL);
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if (!onoff)
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return -ENOMEM;
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onoff->rmap = chip->rmap;
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ret = regmap_read(onoff->rmap, MAX77620_REG_ONOFFIRQ, &code);
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if (ret < 0)
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dev_err(dev, "Failed to clear onoff irq: %d\n", ret);
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np = of_get_child_by_name(pdev->dev.parent->of_node, "onoff");
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if (np && !of_device_is_available(np))
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np = NULL;
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if (np)
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ret = of_property_read_u32(np, "maxim,onoff-keycode",
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&code);
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if (!np || ret < 0)
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onoff->code = KEY_POWER;
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else
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onoff->code = code;
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
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return irq;
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onoff->input = devm_input_allocate_device(dev);
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if (!onoff->input)
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return -ENOMEM;
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onoff->input->name = "max77620_onoff";
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onoff->input->phys = "max77620_onoff/input0";
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onoff->input->id.bustype = BUS_I2C;
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input_set_capability(onoff->input, EV_KEY, onoff->code);
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ret = devm_regmap_add_irq_chip(&pdev->dev, onoff->rmap, irq,
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IRQF_ONESHOT, -1,
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&max77620_onoff_irq_chip,
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&chip->onoff_irq_data);
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if (ret < 0) {
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dev_err(&pdev->dev, "Failed to add onoff irq_chip %d\n", ret);
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goto fail;
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}
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onoff->irq_r = regmap_irq_get_virq(chip->onoff_irq_data,
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MAX77620_IRQ_ONOFF_EN0_R);
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onoff->irq_f = regmap_irq_get_virq(chip->onoff_irq_data,
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MAX77620_IRQ_ONOFF_EN0_F);
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ret = devm_request_any_context_irq(dev, onoff->irq_r,
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max77620_onoff_handler,
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IRQF_ONESHOT, "en0-down", onoff);
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if (ret < 0)
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goto fail;
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ret = devm_request_any_context_irq(dev, onoff->irq_f,
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max77620_onoff_handler,
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IRQF_ONESHOT, "en0-up", onoff);
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if (ret < 0)
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goto fail;
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platform_set_drvdata(pdev, onoff);
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input_set_drvdata(onoff->input, onoff);
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device_init_wakeup(dev, 1);
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ret = input_register_device(onoff->input);
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fail:
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return ret;
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}
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#ifdef CONFIG_PM_SLEEP
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static int max77620_onoff_suspend(struct device *dev)
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{
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struct max77620_onoff *onoff = dev_get_drvdata(dev);
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onoff->suspended = true;
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if (device_may_wakeup(dev))
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return enable_irq_wake(onoff->irq_f);
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return 0;
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}
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static int max77620_onoff_resume(struct device *dev)
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{
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struct max77620_onoff *onoff = dev_get_drvdata(dev);
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unsigned int val, ret;
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/* Clear ON/OFF interrupts */
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ret = regmap_read(onoff->rmap, MAX77620_REG_ONOFFIRQ, &val);
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if (ret < 0)
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dev_err(dev, "Failed to clear onoff irq: %d\n", ret);
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onoff->suspended = false;
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/* If ON/OFF was pressed, report it */
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if (val & MAX77620_IRQ_ONOFF_EN0_R_MASK) {
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input_report_key(onoff->input, onoff->code, 1);
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input_sync(onoff->input);
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}
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/* Unconditionally release after resume */
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input_report_key(onoff->input, onoff->code, 0);
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input_sync(onoff->input);
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if (device_may_wakeup(dev))
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return disable_irq_wake(onoff->irq_f);
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return 0;
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}
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static const struct dev_pm_ops max77620_onoff_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(max77620_onoff_suspend,
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max77620_onoff_resume)
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};
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#endif /* CONFIG_PM_SLEEP */
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static struct platform_driver max77620_onoff_driver = {
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.driver = {
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.name = "max77620-onoff",
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#ifdef CONFIG_PM_SLEEP
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.pm = &max77620_onoff_pm_ops,
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#endif
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},
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.probe = max77620_onoff_probe,
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};
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static int __init max77620_onoff_init(void)
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{
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return platform_driver_register(&max77620_onoff_driver);
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}
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subsys_initcall(max77620_onoff_init);
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static void __exit max77620_onoff_exit(void)
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{
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platform_driver_unregister(&max77620_onoff_driver);
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}
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module_exit(max77620_onoff_exit);
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MODULE_DESCRIPTION("MAXIM 77620 ONOFF driver");
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MODULE_AUTHOR("Billy Laws <blaws05@gmail.com>");
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MODULE_LICENSE("GPL v2");
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@@ -53,6 +53,10 @@ static const struct resource thermal_resources[] = {
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DEFINE_RES_IRQ(MAX77620_IRQ_LBT_TJALRM2),
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};
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static const struct resource onoff_resources[] = {
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DEFINE_RES_IRQ(MAX77620_IRQ_TOP_ONOFF),
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};
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static const struct regmap_irq max77620_top_irqs[] = {
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REGMAP_IRQ_REG(MAX77620_IRQ_TOP_GLBL, 0, MAX77620_IRQ_TOP_GLBL_MASK),
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REGMAP_IRQ_REG(MAX77620_IRQ_TOP_SD, 0, MAX77620_IRQ_TOP_SD_MASK),
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@@ -87,6 +91,10 @@ static const struct mfd_cell max77620_children[] = {
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.name = "max77620-thermal",
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.resources = thermal_resources,
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.num_resources = ARRAY_SIZE(thermal_resources),
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}, {
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.name = "max77620-onoff",
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.resources = onoff_resources,
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.num_resources = ARRAY_SIZE(onoff_resources),
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},
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};
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@@ -280,6 +280,15 @@
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#define MAX77620_CNFGBBC_RESISTOR_MASK 0xC0
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#define MAX77620_CNFGBBC_RESISTOR_SHIFT 6
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#define MAX77620_IRQ_ONOFF_MRWRN_MASK BIT(0)
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#define MAX77620_IRQ_ONOFF_EN0_1SEC_MASK BIT(1)
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#define MAX77620_IRQ_ONOFF_EN0_F_MASK BIT(2)
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#define MAX77620_IRQ_ONOFF_EN0_R_MASK BIT(3)
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#define MAX77620_IRQ_ONOFF_LID_F_MASK BIT(4)
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#define MAX77620_IRQ_ONOFF_LID_R_MASK BIT(5)
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#define MAX77620_IRQ_ONOFF_ACOK_F_MASK BIT(6)
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#define MAX77620_IRQ_ONOFF_ACOK_R_MASK BIT(7)
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#define MAX77620_FPS_COUNT 3
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/* Interrupts */
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@@ -340,6 +349,7 @@ struct max77620_chip {
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struct regmap_irq_chip_data *top_irq_data;
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struct regmap_irq_chip_data *gpio_irq_data;
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struct regmap_irq_chip_data *onoff_irq_data;
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};
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#endif /* _MFD_MAX77620_H_ */
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