--- zzzz-none-000/linux-3.10.107/drivers/mfd/88pm805.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/mfd/88pm805.c	2021-02-04 17:41:59.000000000 +0000
@@ -29,10 +29,8 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 
-#define PM805_CHIP_ID			(0x00)
-
 static const struct i2c_device_id pm80x_id_table[] = {
-	{"88PM805", CHIP_PM805},
+	{"88PM805", 0},
 	{} /* NULL terminated */
 };
 MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
@@ -79,7 +77,7 @@
 	 },
 };
 
-static struct mfd_cell codec_devs[] = {
+static const struct mfd_cell codec_devs[] = {
 	{
 	 .name = "88pm80x-codec",
 	 .num_resources = ARRAY_SIZE(codec_resources),
@@ -138,7 +136,7 @@
 static int device_irq_init_805(struct pm80x_chip *chip)
 {
 	struct regmap *map = chip->regmap;
-	unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+	unsigned long flags = IRQF_ONESHOT;
 	int data, mask, ret = -EINVAL;
 
 	if (!map || !chip->irq) {
@@ -160,7 +158,7 @@
 	 * PM805_INT_STATUS is under 32K clock domain, so need to
 	 * add proper delay before the next I2C register access.
 	 */
-	msleep(1);
+	usleep_range(1000, 3000);
 
 	if (ret < 0)
 		goto out;
@@ -192,7 +190,6 @@
 static int device_805_init(struct pm80x_chip *chip)
 {
 	int ret = 0;
-	unsigned int val;
 	struct regmap *map = chip->regmap;
 
 	if (!map) {
@@ -200,13 +197,6 @@
 		return -EINVAL;
 	}
 
-	ret = regmap_read(map, PM805_CHIP_ID, &val);
-	if (ret < 0) {
-		dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
-		goto out_irq_init;
-	}
-	chip->version = val;
-
 	chip->regmap_irq_chip = &pm805_irq_chip;
 
 	ret = device_irq_init_805(chip);
@@ -237,9 +227,9 @@
 {
 	int ret = 0;
 	struct pm80x_chip *chip;
-	struct pm80x_platform_data *pdata = client->dev.platform_data;
+	struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
 
-	ret = pm80x_init(client, id);
+	ret = pm80x_init(client);
 	if (ret) {
 		dev_err(&client->dev, "pm805_init fail!\n");
 		goto out_init;
@@ -249,11 +239,11 @@
 
 	ret = device_805_init(chip);
 	if (ret) {
-		dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id);
+		dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
 		goto err_805_init;
 	}
 
-	if (pdata->plat_config)
+	if (pdata && pdata->plat_config)
 		pdata->plat_config(chip, pdata);
 
 err_805_init:
@@ -276,8 +266,7 @@
 
 static struct i2c_driver pm805_driver = {
 	.driver = {
-		.name = "88PM80X",
-		.owner = THIS_MODULE,
+		.name = "88PM805",
 		.pm = &pm80x_pm_ops,
 		},
 	.probe = pm805_probe,