mfd: Add an AS3711 PMIC MFD driver

AS3711 is a PMIC with multiple DCDC and LDO power supplies, GPIOs, an RTC,
a battery charger and a general purpose ADC. This patch adds support for
the MFD with support for a regulator driver and a backlight driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/include/linux/mfd/as3711.h b/include/linux/mfd/as3711.h
new file mode 100644
index 000000000000..38452ce1e892
--- /dev/null
+++ b/include/linux/mfd/as3711.h
@@ -0,0 +1,126 @@
+/*
+ * AS3711 PMIC MFC driver header
+ *
+ * Copyright (C) 2012 Renesas Electronics Corporation
+ * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the version 2 of the GNU General Public License as
+ * published by the Free Software Foundation
+ */
+
+#ifndef MFD_AS3711_H
+#define MFD_AS3711_H
+
+/*
+ * Client data
+ */
+
+/* Register addresses */
+#define AS3711_SD_1_VOLTAGE             0       /* Digital Step-Down */
+#define AS3711_SD_2_VOLTAGE             1
+#define AS3711_SD_3_VOLTAGE             2
+#define AS3711_SD_4_VOLTAGE             3
+#define AS3711_LDO_1_VOLTAGE            4       /* Analog LDO */
+#define AS3711_LDO_2_VOLTAGE            5
+#define AS3711_LDO_3_VOLTAGE            6       /* Digital LDO */
+#define AS3711_LDO_4_VOLTAGE            7
+#define AS3711_LDO_5_VOLTAGE            8
+#define AS3711_LDO_6_VOLTAGE            9
+#define AS3711_LDO_7_VOLTAGE            0xa
+#define AS3711_LDO_8_VOLTAGE            0xb
+#define AS3711_SD_CONTROL               0x10
+#define AS3711_GPIO_SIGNAL_OUT          0x20
+#define AS3711_GPIO_SIGNAL_IN           0x21
+#define AS3711_SD_CONTROL_1             0x30
+#define AS3711_SD_CONTROL_2             0x31
+#define AS3711_CURR_CONTROL             0x40
+#define AS3711_CURR1_VALUE              0x43
+#define AS3711_CURR2_VALUE              0x44
+#define AS3711_CURR3_VALUE              0x45
+#define AS3711_STEPUP_CONTROL_1         0x50
+#define AS3711_STEPUP_CONTROL_2         0x51
+#define AS3711_STEPUP_CONTROL_4         0x53
+#define AS3711_STEPUP_CONTROL_5         0x54
+#define AS3711_REG_STATUS               0x73
+#define AS3711_INTERRUPT_STATUS_1       0x77
+#define AS3711_INTERRUPT_STATUS_2       0x78
+#define AS3711_INTERRUPT_STATUS_3       0x79
+#define AS3711_CHARGER_STATUS_1         0x86
+#define AS3711_CHARGER_STATUS_2         0x87
+#define AS3711_ASIC_ID_1                0x90
+#define AS3711_ASIC_ID_2                0x91
+
+#define AS3711_MAX_REGS                 0x92
+
+/* Regulators */
+enum {
+        AS3711_REGULATOR_SD_1,
+        AS3711_REGULATOR_SD_2,
+        AS3711_REGULATOR_SD_3,
+        AS3711_REGULATOR_SD_4,
+        AS3711_REGULATOR_LDO_1,
+        AS3711_REGULATOR_LDO_2,
+        AS3711_REGULATOR_LDO_3,
+        AS3711_REGULATOR_LDO_4,
+        AS3711_REGULATOR_LDO_5,
+        AS3711_REGULATOR_LDO_6,
+        AS3711_REGULATOR_LDO_7,
+        AS3711_REGULATOR_LDO_8,
+
+        AS3711_REGULATOR_MAX,
+};
+
+struct device;
+struct regmap;
+
+struct as3711 {
+        struct device *dev;
+        struct regmap *regmap;
+};
+
+#define AS3711_MAX_STEPDOWN 4
+#define AS3711_MAX_STEPUP 2
+#define AS3711_MAX_LDO 8
+
+enum as3711_su2_feedback {
+        AS3711_SU2_VOLTAGE,
+        AS3711_SU2_CURR1,
+        AS3711_SU2_CURR2,
+        AS3711_SU2_CURR3,
+        AS3711_SU2_CURR_AUTO,
+};
+
+enum as3711_su2_fbprot {
+        AS3711_SU2_LX_SD4,
+        AS3711_SU2_GPIO2,
+        AS3711_SU2_GPIO3,
+        AS3711_SU2_GPIO4,
+};
+
+/*
+ * Platform data
+ */
+
+struct as3711_regulator_pdata {
+        struct regulator_init_data *init_data[AS3711_REGULATOR_MAX];
+};
+
+struct as3711_bl_pdata {
+        const char *su1_fb;
+        int su1_max_uA;
+        const char *su2_fb;
+        int su2_max_uA;
+        enum as3711_su2_feedback su2_feedback;
+        enum as3711_su2_fbprot su2_fbprot;
+        bool su2_auto_curr1;
+        bool su2_auto_curr2;
+        bool su2_auto_curr3;
+};
+
+struct as3711_platform_data {
+        struct as3711_regulator_pdata regulator;
+        struct as3711_bl_pdata backlight;
+};
+
+#endif