Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/include/linux/mfd/pm8xxx/pwm.h b/include/linux/mfd/pm8xxx/pwm.h
new file mode 100644
index 0000000..d85eae0
--- /dev/null
+++ b/include/linux/mfd/pm8xxx/pwm.h
@@ -0,0 +1,88 @@
+/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PM8XXX_PWM_H__
+#define __PM8XXX_PWM_H__
+
+#include <linux/pwm.h>
+
+#define PM8XXX_PWM_DEV_NAME "pm8xxx-pwm"
+
+#define PM8XXX_PWM_PERIOD_MAX (327 * USEC_PER_SEC)
+#define PM8XXX_PWM_PERIOD_MIN 7 /* micro seconds */
+
+#define PM_PWM_LUT_SIZE 64
+#define PM_PWM_LUT_DUTY_TIME_MAX 512 /* ms */
+#define PM_PWM_LUT_PAUSE_MAX (7000 * PM_PWM_LUT_DUTY_TIME_MAX)
+
+/* Flags for Look Up Table */
+#define PM_PWM_LUT_LOOP 0x01
+#define PM_PWM_LUT_RAMP_UP 0x02
+#define PM_PWM_LUT_REVERSE 0x04
+#define PM_PWM_LUT_PAUSE_HI_EN 0x10
+#define PM_PWM_LUT_PAUSE_LO_EN 0x20
+
+#define PM_PWM_LUT_NO_TABLE 0x100
+
+/**
+ * pm8xxx_pwm_lut_config - change a PWM device configuration to use LUT
+ * @pwm: the PWM device
+ * @period_us: period in micro second
+ * @duty_pct: arrary of duty cycles in percent, like 20, 50.
+ * @duty_time_ms: time for each duty cycle in millisecond
+ * @start_idx: start index in lookup table from 0 to MAX-1
+ * @idx_len: number of index
+ * @pause_lo: pause time in millisecond at low index
+ * @pause_hi: pause time in millisecond at high index
+ * @flags: control flags
+ */
+int pm8xxx_pwm_lut_config(struct pwm_device *pwm, int period_us,
+ int duty_pct[], int duty_time_ms, int start_idx,
+ int len, int pause_lo, int pause_hi, int flags);
+
+/**
+ * pm8xxx_pwm_lut_enable - control a PWM device to start/stop LUT ramp
+ * @pwm: the PWM device
+ * @start: to start (1), or stop (0)
+ */
+int pm8xxx_pwm_lut_enable(struct pwm_device *pwm, int start);
+
+/* Standard APIs supported */
+/**
+ * pwm_request - request a PWM device
+ * @pwm_id: PWM id or channel
+ * @label: the label to identify the user
+ */
+
+/**
+ * pwm_free - free a PWM device
+ * @pwm: the PWM device
+ */
+
+/**
+ * pwm_config - change a PWM device configuration
+ * @pwm: the PWM device
+ * @period_us: period in microsecond
+ * @duty_us: duty cycle in microsecond
+ */
+
+/**
+ * pwm_enable - start a PWM output toggling
+ * @pwm: the PWM device
+ */
+
+/**
+ * pwm_disable - stop a PWM output toggling
+ * @pwm: the PWM device
+ */
+
+#endif /* __PM8XXX_PWM_H__ */