Re: [RFC PATCH 2/11] input: RMI4 core bus and sensor drivers.

Signed-off-by: Christopher Heiny <redacted>

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Linus Walleij <redacted>
Cc: Naveen Kumar Gaddipati <redacted>
Cc: Joeri de Gram <redacted>

---

 drivers/input/rmi4/rmi_bus.c    |  436 ++++++++++++
 drivers/input/rmi4/rmi_driver.c | 1488 +++++++++++++++++++++++++++++++++++++++
 drivers/input/rmi4/rmi_driver.h |   97 +++
 3 files changed, 2021 insertions(+), 0 deletions(-)

diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
new file mode 100644
index 0000000..e32d4ad
--- /dev/null
+++ b/drivers/input/rmi4/rmi_bus.c

@@ -0,0 +1,436 @@
+/*
+ * Copyright (c) 2011 Synaptics Incorporated
+ * Copyright (c) 2011 Unixphere
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/rmi.h>
+
+DEFINE_MUTEX(rmi_bus_mutex);
+
+static struct rmi_function_list {
+	struct list_head list;
+	struct rmi_function_handler *fh;
+} rmi_supported_functions;
+
+static struct rmi_character_driver_list {
+	struct list_head list;
+	struct rmi_char_driver *cd;
+} rmi_character_drivers;
+
+static int physical_device_count;
+
+static int rmi_bus_match(struct device *dev, struct device_driver *driver)
+{
+	struct rmi_driver *rmi_driver;
+	struct rmi_device *rmi_dev;
+	struct rmi_device_platform_data *pdata;
+
+	rmi_driver = to_rmi_driver(driver);
+	rmi_dev = to_rmi_device(dev);
+	pdata = to_rmi_platform_data(rmi_dev);
+	dev_dbg(dev, "Matching %s.\n", pdata->sensor_name);
+
+	if (!strcmp(pdata->driver_name, rmi_driver->driver.name)) {
+		rmi_dev->driver = rmi_driver;
+		dev_dbg(dev, "%s: Match %s to %s succeeded.\n", __func__,
+			pdata->driver_name, rmi_driver->driver.name);
+		return 1;
+	}
+
+	dev_err(dev, "%s: Match %s to %s failed.\n", __func__,
+		pdata->driver_name, rmi_driver->driver.name);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int rmi_bus_suspend(struct device *dev)
+{
+#ifdef GENERIC_SUBSYS_PM_OPS
+	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+
+	if (pm && pm->suspend)
+		return pm->suspend(dev);

+#endif
+
+	return 0;
+}
+
+static int rmi_bus_resume(struct device *dev)
+{
+#ifdef GENERIC_SUBSYS_PM_OPS
+	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+
+	if (pm && pm->resume)
+		return pm->resume(dev);

+#endif
+
+	return 0;
+}
+#endif
+
+static int rmi_bus_probe(struct device *dev)