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Diffstat (limited to 'kernel/drivers/input/misc/max77693-haptic.c')
-rw-r--r--kernel/drivers/input/misc/max77693-haptic.c92
1 files changed, 80 insertions, 12 deletions
diff --git a/kernel/drivers/input/misc/max77693-haptic.c b/kernel/drivers/input/misc/max77693-haptic.c
index 39e930c10..6d96bff32 100644
--- a/kernel/drivers/input/misc/max77693-haptic.c
+++ b/kernel/drivers/input/misc/max77693-haptic.c
@@ -1,8 +1,9 @@
/*
- * MAXIM MAX77693 Haptic device driver
+ * MAXIM MAX77693/MAX77843 Haptic device driver
*
- * Copyright (C) 2014 Samsung Electronics
+ * Copyright (C) 2014,2015 Samsung Electronics
* Jaewon Kim <jaewon02.kim@samsung.com>
+ * Krzysztof Kozlowski <k.kozlowski@samsung.com>
*
* This program is not provided / owned by Maxim Integrated Products.
*
@@ -24,7 +25,9 @@
#include <linux/workqueue.h>
#include <linux/regulator/consumer.h>
#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
+#include <linux/mfd/max77843-private.h>
#define MAX_MAGNITUDE_SHIFT 16
@@ -46,6 +49,8 @@ enum max77693_haptic_pwm_divisor {
};
struct max77693_haptic {
+ enum max77693_types dev_type;
+
struct regmap *regmap_pmic;
struct regmap *regmap_haptic;
struct device *dev;
@@ -59,7 +64,6 @@ struct max77693_haptic {
unsigned int pwm_duty;
enum max77693_haptic_motor_type type;
enum max77693_haptic_pulse_mode mode;
- enum max77693_haptic_pwm_divisor pwm_divisor;
struct work_struct work;
};
@@ -78,19 +82,52 @@ static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
return 0;
}
+static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on)
+{
+ int error;
+
+ if (haptic->dev_type != TYPE_MAX77843)
+ return 0;
+
+ error = regmap_update_bits(haptic->regmap_haptic,
+ MAX77843_SYS_REG_MAINCTRL1,
+ MAX77843_MAINCTRL1_BIASEN_MASK,
+ on << MAINCTRL1_BIASEN_SHIFT);
+ if (error) {
+ dev_err(haptic->dev, "failed to %s bias: %d\n",
+ on ? "enable" : "disable", error);
+ return error;
+ }
+
+ return 0;
+}
+
static int max77693_haptic_configure(struct max77693_haptic *haptic,
bool enable)
{
- unsigned int value;
+ unsigned int value, config_reg;
int error;
- value = ((haptic->type << MAX77693_CONFIG2_MODE) |
- (enable << MAX77693_CONFIG2_MEN) |
- (haptic->mode << MAX77693_CONFIG2_HTYP) |
- (haptic->pwm_divisor));
+ switch (haptic->dev_type) {
+ case TYPE_MAX77693:
+ value = ((haptic->type << MAX77693_CONFIG2_MODE) |
+ (enable << MAX77693_CONFIG2_MEN) |
+ (haptic->mode << MAX77693_CONFIG2_HTYP) |
+ MAX77693_HAPTIC_PWM_DIVISOR_128);
+ config_reg = MAX77693_HAPTIC_REG_CONFIG2;
+ break;
+ case TYPE_MAX77843:
+ value = (haptic->type << MCONFIG_MODE_SHIFT) |
+ (enable << MCONFIG_MEN_SHIFT) |
+ MAX77693_HAPTIC_PWM_DIVISOR_128;
+ config_reg = MAX77843_HAP_REG_MCONFIG;
+ break;
+ default:
+ return -EINVAL;
+ }
error = regmap_write(haptic->regmap_haptic,
- MAX77693_HAPTIC_REG_CONFIG2, value);
+ config_reg, value);
if (error) {
dev_err(haptic->dev,
"failed to update haptic config: %d\n", error);
@@ -104,6 +141,9 @@ static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable)
{
int error;
+ if (haptic->dev_type != TYPE_MAX77693)
+ return 0;
+
error = regmap_update_bits(haptic->regmap_pmic,
MAX77693_PMIC_REG_LSCNFG,
MAX77693_PMIC_LOW_SYS_MASK,
@@ -219,6 +259,10 @@ static int max77693_haptic_open(struct input_dev *dev)
struct max77693_haptic *haptic = input_get_drvdata(dev);
int error;
+ error = max77843_haptic_bias(haptic, true);
+ if (error)
+ return error;
+
error = regulator_enable(haptic->motor_reg);
if (error) {
dev_err(haptic->dev,
@@ -241,6 +285,8 @@ static void max77693_haptic_close(struct input_dev *dev)
if (error)
dev_err(haptic->dev,
"failed to disable regulator: %d\n", error);
+
+ max77843_haptic_bias(haptic, false);
}
static int max77693_haptic_probe(struct platform_device *pdev)
@@ -254,13 +300,26 @@ static int max77693_haptic_probe(struct platform_device *pdev)
return -ENOMEM;
haptic->regmap_pmic = max77693->regmap;
- haptic->regmap_haptic = max77693->regmap_haptic;
haptic->dev = &pdev->dev;
haptic->type = MAX77693_HAPTIC_LRA;
haptic->mode = MAX77693_HAPTIC_EXTERNAL_MODE;
- haptic->pwm_divisor = MAX77693_HAPTIC_PWM_DIVISOR_128;
haptic->suspend_state = false;
+ /* Variant-specific init */
+ haptic->dev_type = platform_get_device_id(pdev)->driver_data;
+ switch (haptic->dev_type) {
+ case TYPE_MAX77693:
+ haptic->regmap_haptic = max77693->regmap_haptic;
+ break;
+ case TYPE_MAX77843:
+ haptic->regmap_haptic = max77693->regmap;
+ break;
+ default:
+ dev_err(&pdev->dev, "unsupported device type: %u\n",
+ haptic->dev_type);
+ return -EINVAL;
+ }
+
INIT_WORK(&haptic->work, max77693_haptic_play_work);
/* Get pwm and regulatot for haptic device */
@@ -338,16 +397,25 @@ static int __maybe_unused max77693_haptic_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops,
max77693_haptic_suspend, max77693_haptic_resume);
+static const struct platform_device_id max77693_haptic_id[] = {
+ { "max77693-haptic", TYPE_MAX77693 },
+ { "max77843-haptic", TYPE_MAX77843 },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, max77693_haptic_id);
+
static struct platform_driver max77693_haptic_driver = {
.driver = {
.name = "max77693-haptic",
.pm = &max77693_haptic_pm_ops,
},
.probe = max77693_haptic_probe,
+ .id_table = max77693_haptic_id,
};
module_platform_driver(max77693_haptic_driver);
MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
-MODULE_DESCRIPTION("MAXIM MAX77693 Haptic driver");
+MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
+MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver");
MODULE_ALIAS("platform:max77693-haptic");
MODULE_LICENSE("GPL");