mfd: Add platform data for MAX8997 haptic driver

MAX8997 device does not support haptic function of it.
This patch adds platform data for for MAX8997 haptic driver.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 52 insertions, 1 deletions

diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h
index fff590521e50..9d8006b4a13a 100644
--- a/include/linux/mfd/max8997.h
+++ b/include/linux/mfd/max8997.h
@@ -153,6 +153,55 @@ struct max8997_led_platform_data {
         u8 brightness[2];
 };
 
+enum max8997_haptic_motor_type {
+        MAX8997_HAPTIC_ERM,
+        MAX8997_HAPTIC_LRA,
+};
+
+enum max8997_haptic_pulse_mode {
+        MAX8997_EXTERNAL_MODE,
+        MAX8997_INTERNAL_MODE,
+};
+
+enum max8997_haptic_pwm_divisor {
+        MAX8997_PWM_DIVISOR_32,
+        MAX8997_PWM_DIVISOR_64,
+        MAX8997_PWM_DIVISOR_128,
+        MAX8997_PWM_DIVISOR_256,
+};
+
+/*
+ * max8997_haptic_platform_data
+ * @pwm_channel_id: channel number of PWM device
+ *                  valid for MAX8997_EXTERNAL_MODE
+ * @pwm_period: period in nano second for PWM device
+ *              valid for MAX8997_EXTERNAL_MODE
+ * @type: motor type
+ * @mode: pulse mode
+ *     MAX8997_EXTERNAL_MODE: external PWM device is used to control motor
+ *     MAX8997_INTERNAL_MODE: internal pulse generator is used to control motor
+ * @pwm_divisor: divisor for external PWM device
+ * @internal_mode_pattern: internal mode pattern for internal mode
+ *     [0 - 3]: valid pattern number
+ * @pattern_cycle: the number of cycles of the waveform
+ *                 for the internal mode pattern
+ *     [0 - 15]: available cycles
+ * @pattern_signal_period: period of the waveform for the internal mode pattern
+ *     [0 - 255]: available period
+ */
+struct max8997_haptic_platform_data {
+        int pwm_channel_id;
+        int pwm_period;
+
+        enum max8997_haptic_motor_type type;
+        enum max8997_haptic_pulse_mode mode;
+        enum max8997_haptic_pwm_divisor pwm_divisor;
+
+        int internal_mode_pattern;
+        int pattern_cycle;
+        int pattern_signal_period;
+};
+
 struct max8997_platform_data {
         /* IRQ */
         int irq_base;
@@ -192,7 +241,9 @@ struct max8997_platform_data {
         /* ---- MUIC ---- */
         struct max8997_muic_platform_data *muic_pdata;
 
-        /* HAPTIC: Not implemented */
+        /* ---- HAPTIC ---- */
+        struct max8997_haptic_platform_data *haptic_pdata;
+
         /* RTC: Not implemented */
         /* ---- LED ---- */
         struct max8997_led_platform_data *led_pdata;