[PATCH v2 1/2] mfd: add platform data for MAX8997 haptic driver

Chanwoo Choi
2012-03-07T08:03:01Z

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>
---
include/linux/mfd/max8997.h | 53
++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 52 insertions(+), 1 deletions(-)

diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h
index fff5905..9d8006b 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;
--
1.7.0.4