ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/input/misc/pm80x_exton.c b/marvell/linux/drivers/input/misc/pm80x_exton.c
new file mode 100644
index 0000000..1d92cb9
--- /dev/null
+++ b/marvell/linux/drivers/input/misc/pm80x_exton.c
@@ -0,0 +1,230 @@
+/*
+ * ASRMICRO PM80x EXTON1N driver
+ *
+ * Copyright: (C) Copyright 2023 ASR Microelectronics (Shanghai) Co., Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/mfd/88pm80x.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/irq.h>
+
+struct pm80x_exton1n_info {
+ struct input_dev *idev;
+ struct device *dev;
+ struct pm80x_chip *pm80x;
+ struct regmap *map;
+ int irq;
+};
+
+/* 88PM80x gives us an interrupt when EXTON1N is held */
+static irqreturn_t pm80x_exton1n_handler(int irq, void *data)
+{
+ struct pm80x_exton1n_info *info = data;
+ int ret = 0;
+ unsigned int val;
+
+ ret = regmap_read(info->map, PM800_STATUS_1, &val);
+ if (ret < 0) {
+ dev_err(info->idev->dev.parent,
+ "failed to read status: %d\n", ret);
+ return IRQ_NONE;
+ }
+ val &= PM800_EXTON_STS1;
+ if (val) {
+ pm_stay_awake(info->dev);
+ } else {
+ pm_wakeup_event(info->dev, 8000);
+ }
+
+ pr_info("pm80x_exton1n press = %x\n", !!val); /* sys-sanity */
+
+ input_report_key(info->idev, KEY_POWER, val);
+ input_sync(info->idev);
+
+ return IRQ_HANDLED;
+}
+
+static SIMPLE_DEV_PM_OPS(pm80x_exton1n_pm_ops, pm80x_dev_suspend,
+ pm80x_dev_resume);
+
+static int pm80x_exton1n_dt_init(struct device_node *np,
+ struct pm80x_exton1n_info *info)
+{
+ return 0;
+}
+
+static int pm80x_exton1n_probe(struct platform_device *pdev)
+{
+
+ struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+ struct device_node *node = pdev->dev.of_node;
+ struct pm80x_exton1n_info *info;
+ int err;
+
+ info = kzalloc(sizeof(struct pm80x_exton1n_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->pm80x = chip;
+
+ info->irq = platform_get_irq(pdev, 0);
+ if (info->irq < 0) {
+ dev_err(&pdev->dev, "No IRQ resource!\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ info->map = info->pm80x->regmap;
+ if (!info->map) {
+ dev_err(&pdev->dev, "no regmap!\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ info->idev = input_allocate_device();
+ if (!info->idev) {
+ dev_err(&pdev->dev, "Failed to allocate input dev\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ info->dev = &pdev->dev;
+ info->idev->name = "88pm80x_exton1n";
+ info->idev->phys = "88pm80x_exton1n/input0";
+ info->idev->id.bustype = BUS_I2C;
+ info->idev->dev.parent = &pdev->dev;
+ info->idev->evbit[0] = BIT_MASK(EV_KEY);
+ __set_bit(KEY_POWER, info->idev->keybit);
+
+ err = pm80x_exton1n_dt_init(node, info);
+ if (err < 0) {
+ err = -ENODEV;
+ goto out_reg;
+ }
+
+ irq_set_status_flags(info->irq, IRQ_NOAUTOEN);
+ err = pm80x_request_irq(info->pm80x, info->irq, pm80x_exton1n_handler,
+ IRQF_ONESHOT | IRQF_NO_SUSPEND,
+ "exton1n", info);
+ if (err < 0) {
+ dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n",
+ info->irq, err);
+ goto out_reg;
+ }
+
+ err = input_register_device(info->idev);
+ if (err) {
+ dev_err(&pdev->dev, "Can't register input device: %d\n", err);
+ goto out_irq;
+ }
+
+ /* exton1n db time: 16ms */
+#if defined(CONFIG_MFD_PM802) || defined(CONFIG_MFD_PM803)
+ if (CHIP_PM802 == info->pm80x->type || CHIP_PM803 == info->pm80x->type)
+ regmap_update_bits(info->map, PM800_RTC_MISC3, 0x0f, 0x0f);
+ else
+#endif
+ regmap_update_bits(info->map, PM800_RTC_MISC4, 0x30, 0x30);
+
+ platform_set_drvdata(pdev, info);
+
+ /* set FAULT_WU_EN */
+ if (CHIP_PM803 == chip->type ||
+ CHIP_PM813 == chip->type)
+ regmap_update_bits(chip->regmap, PM800_RTC_MISC5, PM803_FAULT_WAKEUP_EN,
+ PM803_FAULT_WAKEUP_EN);
+ else
+ regmap_update_bits(chip->regmap, PM800_RTC_MISC5, PM800_FAULT_WAKEUP_EN,
+ PM800_FAULT_WAKEUP_EN);
+
+ /* need to set fault_wakeup for asr new pmics */
+ if (CHIP_PM802 == chip->type ||
+ CHIP_PM813_ID == chip->chip_id)
+ regmap_update_bits(chip->regmap, PM800_RTC_MISC5, PM800_FAULT_WAKEUP,
+ PM800_FAULT_WAKEUP);
+ else if (CHIP_PM803 == chip->type ||
+ CHIP_PM813S_A0_ID == chip->chip_id ||
+ CHIP_PM813S_A1_ID == chip->chip_id)
+ regmap_update_bits(chip->regmap, PM800_RTC_MISC5, PM803_FAULT_WAKEUP,
+ PM803_FAULT_WAKEUP);
+
+ /* OnKey runs timer => need wake-constraint {Press ... Release+mSec}
+ * (especially to avoid false-panic-emulation).
+ * device_init_wakeup() creates "88pm80x-exton1n"
+ * but pm_stay_awake(&info->idev->dev) doesn't as required
+ * Do NOT use the driver's name but the "exton1n" instead.
+ */
+ device_init_wakeup(info->dev, true);
+ enable_irq(info->irq);
+ return 0;
+
+out_irq:
+ pm80x_free_irq(info->pm80x, info->irq, info);
+out_reg:
+ input_free_device(info->idev);
+out:
+ kfree(info);
+ return err;
+}
+
+static int pm80x_exton1n_remove(struct platform_device *pdev)
+{
+ struct pm80x_exton1n_info *info = platform_get_drvdata(pdev);
+
+ disable_irq(info->irq);
+ pm80x_free_irq(info->pm80x, info->irq, info);
+ input_unregister_device(info->idev);
+ kfree(info);
+ return 0;
+}
+
+static void pm80x_exton1n_shutdown(struct platform_device *pdev)
+{
+ struct pm80x_exton1n_info *info = platform_get_drvdata(pdev);
+ disable_irq(info->irq);
+ pm80x_free_irq(info->pm80x, info->irq, info);
+ return;
+}
+
+static const struct of_device_id pm80x_exton1n_dt_match[] = {
+ { .compatible = "marvell,88pm80x-usb", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, pm80x_exton1n_dt_match);
+
+static struct platform_driver pm80x_exton1n_driver = {
+ .driver = {
+ .name = "88pm80x-exton1n",
+ .owner = THIS_MODULE,
+ .pm = &pm80x_exton1n_pm_ops,
+ .of_match_table = of_match_ptr(pm80x_exton1n_dt_match),
+ },
+ .probe = pm80x_exton1n_probe,
+ .remove = pm80x_exton1n_remove,
+ .shutdown = pm80x_exton1n_shutdown,
+};
+
+module_platform_driver(pm80x_exton1n_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ASRMICRO PM80x EXTON1N driver");
+MODULE_AUTHOR("Xuhong Gao <xuhonggao@asrmicro.com>");
+MODULE_ALIAS("platform:pm80x-exton1n");