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-rw-r--r--drivers/staging/Kconfig2
-rw-r--r--drivers/staging/Makefile1
-rw-r--r--drivers/staging/triune/Kconfig4
-rw-r--r--drivers/staging/triune/Makefile5
-rw-r--r--drivers/staging/triune/ts81001.c194
-rw-r--r--drivers/staging/triune/ts81001.h57
6 files changed, 263 insertions, 0 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index aefe820a800..1098075875d 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -140,4 +140,6 @@ source "drivers/staging/netlogic/Kconfig"
source "drivers/staging/dwc2/Kconfig"
+source "drivers/staging/triune/Kconfig"
+
endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 415772ea306..10cfb01009b 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -62,3 +62,4 @@ obj-$(CONFIG_FIREWIRE_SERIAL) += fwserial/
obj-$(CONFIG_ZCACHE) += zcache/
obj-$(CONFIG_GOLDFISH) += goldfish/
obj-$(CONFIG_USB_DWC2) += dwc2/
+obj-$(CONFIG_OLIO_TS81001) += triune/
diff --git a/drivers/staging/triune/Kconfig b/drivers/staging/triune/Kconfig
new file mode 100644
index 00000000000..c16d93dfb6b
--- /dev/null
+++ b/drivers/staging/triune/Kconfig
@@ -0,0 +1,4 @@
+config OLIO_TS81001
+ tristate "OLIO Triune TS81001 driver"
+ ---help---
+ Simplistic driver for the TS81001 wireless charger receiver from Triune as used by Olio.
diff --git a/drivers/staging/triune/Makefile b/drivers/staging/triune/Makefile
new file mode 100644
index 00000000000..a0fe548534b
--- /dev/null
+++ b/drivers/staging/triune/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Olio Triune charger driver
+#
+
+obj-$(CONFIG_OLIO_TS81001) += ts81001.o
diff --git a/drivers/staging/triune/ts81001.c b/drivers/staging/triune/ts81001.c
new file mode 100644
index 00000000000..0562f4c9526
--- /dev/null
+++ b/drivers/staging/triune/ts81001.c
@@ -0,0 +1,194 @@
+/* ts81001.c - basic driver for Triune's 81001 */
+
+/*
+ * Triune ts81001 driver
+ *
+ * Copyright 2015 Olio Devices
+ *
+ * Mattis Fjallstrom (mattis@oliodevices.com)
+ */
+
+/*
+ * DESCRIPTION
+ * ===========
+ * This driver isn't strictly necessary. It provides access to some
+ * of the basic functionality of the ts81001 from the linux kernel in
+ * an easier way than otherwise. (The standard way would just be to
+ * query the i2c bus).
+ *
+ * The plan is to also simplify updating the charger firmware ... but
+ * that's not there yet. For now I'll also hardcode all the settings
+ * (like i2c bus address) but that may change later.
+ */
+
+/*
+ * Modification History
+ * ====================
+ * 01a, 20150921, mfj Created
+ */
+
+/* Includes */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/iio/iio.h>
+
+#include "ts81001.h"
+
+/* Defines */
+
+#ifdef OLIODEBUG
+#define olio_debug(format, ...) printk ("OLIO %s: ", __FUNCTION__); printk (format, ##__VA_ARGS__)
+#else
+#define olio_debug(format, ...)
+#endif
+
+/* Globals */
+
+const int TS81001_ADDR=0x49;
+const u8 TS81001_STATUS_REG=0x10;
+
+
+/***************************************************************************
+ * Operations
+ */
+
+static int ts81001_i2c_read (struct i2c_client * client,
+ u8 reg_addr,
+ int len,
+ u8 * data,
+ bool b_lock) {
+ int err = 0;
+ struct i2c_msg msg[2];
+
+ olio_debug (" entered\n");
+
+ msg[0].addr = client->addr;
+ msg[0].flags = client->flags;
+ msg[0].len = 1;
+ msg[0].buf = &reg_addr;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = client->flags | I2C_M_RD;
+ msg[1].len = len;
+ msg[1].buf = data;
+
+ if (b_lock) /* TODO: Add locking! */
+ err = i2c_transfer(client->adapter, msg, 2);
+ else
+ err = i2c_transfer(client->adapter, msg, 2);
+
+ olio_debug (" exiting\n");
+
+ return err;
+}
+
+/***************************************************************************
+ * ts81001_get_status - get current charger state.
+ *
+ * This function reads the status from the device on the i2c bus. The
+ * ts81001 can be really slow to react, so we'll try again a few times
+ * before accepting failure.
+ */
+
+static int ts81001_get_status (struct ts81001 * ts) {
+ u8 data;
+ ts81001_state_t state;
+ int len = 1;
+ int err = 0;
+ int retries = 2;
+ int i;
+
+ olio_debug ("entered\n");
+
+ for (i = 0; i < retries; i++) {
+ err = ts81001_i2c_read (ts->client, TS81001_STATUS_REG, len, &data, false);
+
+ if (err <= 0) {
+ olio_debug ("Error reading status from ts81001, err = %d\n", err);
+ state = err;
+ } else {
+ state = (ts81001_state_t) data;
+ break;
+ }
+ }
+
+ olio_debug ("exiting\n");
+
+ return state;
+}
+
+
+static struct ts81001_ops ts_ops = {
+ .get_status = ts81001_get_status,
+};
+
+/***************************************************************************
+ * probe
+ */
+
+
+static int ts81001_i2c_probe(struct i2c_client * client,
+ const struct i2c_device_id * id)
+{
+ struct ts81001 *ts81001;
+
+ int ret = 0;
+ int chip_id = id->driver_data;
+
+ olio_debug("OLIO entered\n");
+
+ ts81001 = kmalloc(sizeof(*ts81001), GFP_KERNEL);
+
+ if (!ts81001)
+ return -ENOMEM;
+
+ ts81001->dev = &client->dev;
+ ts81001->name = client->name;
+ ts81001->client = client;
+ ts81001->id = chip_id;
+
+ ts81001->ops = &ts_ops;
+
+ /* Fill out i2c_client struct */
+
+ i2c_set_clientdata(client, ts81001);
+
+ olio_debug ("exiting\n");
+
+ return ret;
+}
+
+static int ts81001_i2c_remove(struct i2c_client * client)
+{
+ struct ts81001 * ts = i2c_get_clientdata(client);
+
+ kfree (ts);
+
+ return 0;
+}
+
+static const struct i2c_device_id ts81001_id_table[] = {
+ { TS81001_DEV_NAME },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, ts81001_id_table);
+
+static struct i2c_driver ts81001_i2c_driver = {
+ .probe = ts81001_i2c_probe,
+ .remove = ts81001_i2c_remove,
+ .id_table = ts81001_id_table,
+ .driver = {
+ .name = "ts81001",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_i2c_driver(ts81001_i2c_driver);
+
+MODULE_AUTHOR("Mattis Fjallstrom <mattis@oliodevice.com");
+MODULE_DESCRIPTION("Basic driver for TS81001");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/triune/ts81001.h b/drivers/staging/triune/ts81001.h
new file mode 100644
index 00000000000..6d248254661
--- /dev/null
+++ b/drivers/staging/triune/ts81001.h
@@ -0,0 +1,57 @@
+/*
+ * ts81001.h - Triune ts81001 driver
+ *
+ * Copyright 2015 Olio Devices
+ *
+ * Author: Mattis Fjallstrom
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+/* DESCRIPTION
+ * ===========
+ * This is the header for the Triune TS81001 driver.
+ */
+
+/*
+ * Modification History
+ * ====================
+ * 01a, 20150921, mfj Created
+ */
+
+/* DEFINES */
+
+#ifndef _CONFIG_TS81001_H
+#define _CONFIG_TS81001_H
+
+#define TS81001_DEV_NAME "ts81001"
+
+/* INCLUDES */
+
+#include <linux/regmap.h>
+
+typedef enum ts81001_state {
+ NOT_CHARGING,
+ PRECHARGE,
+ CHARGING_1C,
+ TOPOFF
+} ts81001_state_t;
+
+struct ts81001 {
+ struct device *dev;
+ struct i2c_client *client;
+ struct regmap *regmap;
+ unsigned int id;
+ char * name;
+ struct ts81001_ops * ops;
+};
+
+struct ts81001_ops {
+ int (*get_status) (struct ts81001 * ts);
+};
+
+#endif /* _CONFIG_TS81001_H */
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-02 06:34:56 +0000