1 files changed, 68 insertions, 0 deletions
diff --git a/include/linux/mfd/stm32-lptimer.h b/include/linux/mfd/stm32-lptimer.h
new file mode 100644
index 000000000..06d3f11dc
--- /dev/null
+++ b/include/linux/mfd/stm32-lptimer.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * STM32 Low-Power Timer parent driver.
+ * Copyright (C) STMicroelectronics 2017
+ * Author: Fabrice Gasnier <fabrice.gasnier@st.com>
+ * Inspired by Benjamin Gaignard's stm32-timers driver
+ */
+
+#ifndef _LINUX_STM32_LPTIMER_H_
+#define _LINUX_STM32_LPTIMER_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+#define STM32_LPTIM_ISR		0x00	/* Interrupt and Status Reg  */
+#define STM32_LPTIM_ICR		0x04	/* Interrupt Clear Reg       */
+#define STM32_LPTIM_IER		0x08	/* Interrupt Enable Reg      */
+#define STM32_LPTIM_CFGR	0x0C	/* Configuration Reg         */
+#define STM32_LPTIM_CR		0x10	/* Control Reg               */
+#define STM32_LPTIM_CMP		0x14	/* Compare Reg               */
+#define STM32_LPTIM_ARR		0x18	/* Autoreload Reg            */
+#define STM32_LPTIM_CNT		0x1C	/* Counter Reg               */
+
+/* STM32_LPTIM_ISR - bit fields */
+#define STM32_LPTIM_CMPOK_ARROK		GENMASK(4, 3)
+#define STM32_LPTIM_ARROK		BIT(4)
+#define STM32_LPTIM_CMPOK		BIT(3)
+
+/* STM32_LPTIM_ICR - bit fields */
+#define STM32_LPTIM_ARRMCF		BIT(1)
+#define STM32_LPTIM_CMPOKCF_ARROKCF	GENMASK(4, 3)
+
+/* STM32_LPTIM_IER - bit flieds */
+#define STM32_LPTIM_ARRMIE	BIT(1)
+
+/* STM32_LPTIM_CR - bit fields */
+#define STM32_LPTIM_CNTSTRT	BIT(2)
+#define STM32_LPTIM_SNGSTRT	BIT(1)
+#define STM32_LPTIM_ENABLE	BIT(0)
+
+/* STM32_LPTIM_CFGR - bit fields */
+#define STM32_LPTIM_ENC		BIT(24)
+#define STM32_LPTIM_COUNTMODE	BIT(23)
+#define STM32_LPTIM_WAVPOL	BIT(21)
+#define STM32_LPTIM_PRESC	GENMASK(11, 9)
+#define STM32_LPTIM_CKPOL	GENMASK(2, 1)
+
+/* STM32_LPTIM_CKPOL */
+#define STM32_LPTIM_CKPOL_RISING_EDGE	0
+#define STM32_LPTIM_CKPOL_FALLING_EDGE	1
+#define STM32_LPTIM_CKPOL_BOTH_EDGES	2
+
+/* STM32_LPTIM_ARR */
+#define STM32_LPTIM_MAX_ARR	0xFFFF
+
+/**
+ * struct stm32_lptimer - STM32 Low-Power Timer data assigned by parent device
+ * @clk: clock reference for this instance
+ * @regmap: register map reference for this instance
+ * @has_encoder: indicates this Low-Power Timer supports encoder mode
+ */
+struct stm32_lptimer {
+	struct clk *clk;
+	struct regmap *regmap;
+	bool has_encoder;
+};
+
+#endif