tmpm32xi2c: Add Toshiba MCU TMPM32x I2C driver

Added MFD core, GPIO expender and Power off drivers for
Toshiba MCU TMPM32x I2C.

Bug 1928059
Bug 200309618

Change-Id: I76d58511ad64a3eb13ba0b64df22583372c31e41
Signed-off-by: Jinyoung Park <jinyoungp@nvidia.com>
Reviewed-on: http://git-master/r/1485846
Reviewed-by: Aniruddha Banerjee <aniruddhab@nvidia.com>
Tested-by: Aniruddha Banerjee <aniruddhab@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Timo Alho <talho@nvidia.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/include/linux/mfd/tmpm32xi2c.h b/include/linux/mfd/tmpm32xi2c.h
new file mode 100644
index 000000000..c4c8cd307
--- /dev/null
+++ b/include/linux/mfd/tmpm32xi2c.h
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright (c) 2015-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 _LINUX_TMPM32XI2C_H
+#define _LINUX_TMPM32XI2C_H
+
+#define CMD_INT_REG             0x10
+
+#define CMD_PIN_RD              0x20
+#define CMD_PORT_RD             0x21
+#define CMD_PIN_IN              0x22
+#define CMD_GET_DIR             0x23
+#define CMD_POL_INV             0x24
+#define CMD_RD_VOLT             0x25
+#define CMD_RD_ADC              0x26
+#define CMD_RESET               0x27
+#define CMD_POWER               0x28
+#define CMD_INT_MASK            0x29
+#define CMD_FAN_TACH            0x2A
+#define CMD_FORCE_RCV           0x2B
+#define CMD_SHUTDOWN_PREPARE    0x2C
+#define CMD_VERSION             0x2F
+
+#define CMD_PIN_WR              0x30
+#define CMD_PORT_WR             0x31
+#define CMD_PIN_OUT             0x32
+#define CMD_FAN_PWM             0x33
+
+#define CMD_I2C_PROB            0xA0
+#define CMD_CAN_TEST            0xA1
+
+#define R_SYS_9V                0
+#define R_VBAT                  1
+#define R_VDD_DDR_1V8           2
+
+/* CMD_RD_VOLT 0x25 */
+#define R_VDD_GPU               0
+#define R_VDD_BCPU              1
+#define R_VDD_MCPU              2
+#define R_VDD_SOC               3
+#define R_VDD_SRAM              4
+#define R_VDD_DDR               5
+
+/* CMD_VERSION 0x2F */
+#define V_FW                    0
+#define V_CMD                   1
+
+/* CMD_SHUTDOWN_PREPARE 0x2C */
+#define SHUTDOWN_PREPARE_CLEAR  0
+#define SHUTDOWN_PREPARE_SET    1
+
+struct tmpm32xi2c_chip {
+        struct device *dev;
+
+        struct mutex lock;
+        int irq;
+        unsigned long irq_flags;
+
+        u8 fw_ver[2];
+        u8 cmd_ver;
+
+        int (*write_read)(struct tmpm32xi2c_chip *chip,
+                          u8 *tx_buf, int tx_size, u8 *rx_buf, int rx_size);
+};
+
+#endif /* _LINUX_TMPM32XI2C_H */