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

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Date:	Wed, 07 Mar 2012 17:02:51 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	linux-input@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	sameo@...ux.intel.com, broonie@...nsource.wolfsonmicro.com,
	linux-kernel@...r.kernel.org, kyungmin.park@...sung.com,
	myungjoo.ham@...sung.com
Subject: [PATCH v2 1/2] 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@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.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
--
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