Cc: Christopher Heiny <cheiny@xxxxxxxxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Courtney Cavin <courtney.cavin@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/input/rmi4.txt | 107 +++++++++++++++++
.../devicetree/bindings/vendor-prefixes.txt | 1 +
drivers/input/rmi4/rmi_bus.c | 12 +-
drivers/input/rmi4/rmi_bus.h | 3 +-
drivers/input/rmi4/rmi_driver.c | 44 +++++--
drivers/input/rmi4/rmi_f01.c | 107 +++++++++++++++--
drivers/input/rmi4/rmi_f11.c | 133 ++++++++++++++++++++-
drivers/input/rmi4/rmi_i2c.c | 19 +--
8 files changed, 388 insertions(+), 38 deletions(-)
create mode 100644 Documentation/devicetree/bindings/input/rmi4.txt
diff --git a/Documentation/devicetree/bindings/input/rmi4.txt b/Documentation/devicetree/bindings/input/rmi4.txt
new file mode 100644
index 0000000..fff9db7
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/rmi4.txt
@@ -0,0 +1,107 @@
+Synaptics RMI4-based input device binding
+
+PROPERTIES
+
+compatible:
+ Usage: required
+ Type: string, must be "syn,rmi_i2c"
+
+interrupts:
+ Usage: required
+ Type: <prop-encoded-array>
+ Desc: See devicetree/bindings/interrupt-controller/interrupts.txt;
+ Trigger sense required in mask
+
+syn,reset-delay:
+ Usage: optional (default: 100)
+ Type: u32, milliseconds
+ Desc: Delay after issuing a reset
+
+syn,power-no-sleep:
+ Usage: optional, mutually exclusive with syn,power-sleep
+ (default: chip-specific)
+ Type: boolean
+ Desc: Disable sleep mode
+
+syn,power-sleep:
+ Usage: optional, mutually exclusive with syn,power-no-sleep
+ (default: chip-specific)
+ Type: boolean
+ Desc: Enable sleep mode
+
+syn,power-wakeup-thresh:
+ Usage: optional (default: chip-specific)
+ Type: u32, chip-specific unit [0-255]
+ Desc: Capacitance threshold at which device should wake
+
+syn,power-doze-holdoff:
+ Usage: optional (default: chip-specific)
+ Type: u32, milliseconds [0-25500]
+ Desc: Idle delay before entering sleep mode
+
+syn,power-doze-interval:
+ Usage: optional (default: chip-specific)
+ Type: u32, milliseconds [0-2550]
+ Desc: Interval between checks for idle
+
+syn,2d-rezero-wait:
+ Usage: optional (default: no re-zeroing)
+ Type: u32, milliseconds [0-65535]
+ Desc: Delay after resume to re-zero sensor
+
+syn,2d-axis-swap:
+ Usage: optional (default: false)
+ Type: boolean
+ Desc: Swap X and Y axis
+
+syn,2d-flip-x:
+ Usage: optional (default: false)
+ Type: boolean
+ Desc: Invert X axis
+
+syn,2d-flip-y:
+ Usage: optional (default: false)
+ Type: boolean
+ Desc: Invert Y axis
+
+syn,2d-clip-range:
+ Usage: optional (default: clip disabled)
+ Type: u32 array (<top left bottom right>) [0-65535]
+ Usage: Clip values outside this range
+
+syn,2d-offset:
+ Usage: optional (default: offset disabled)
+ Type: u32 array (<X-offset Y-offset>) [0-65535]
+ Usage: Add offset values to reported events
+
+syn,2d-delta-thresh:
+ Usage: optional (default: chip-specific)
+ Type: u32 array (<X-delta Y-delta>) [0-255]
+ Usage: Minimum delta before event is reported
+
+syn,2d-sensor-type:
+ Usage: optional (default: chip-specific)
+ Type: string, "indirect" or "direct"
+ Usage: Set screen type for event reporting
+
+syn,2d-type-a:
+ Usage: optional (default: false)
+ Type: boolean
+ Usage: Sensor supports only Multifinger Type A protocol
+
+EXAMPLE
+
+i2c@0 {
+ compatible = "...";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ synaptics_rmi4@2c {
+ compatible = "syn,rmi_i2c";
+ reg = <0x2c>;
+
+ interrupts = <61 IRQ_TYPE_EDGE_FALLING>;
+
+ syn,2d-clip-range = <0 0 1919 1079>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index edbb8d8..3388986 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -72,6 +72,7 @@ snps Synopsys, Inc.
st STMicroelectronics
ste ST-Ericsson
stericsson ST-Ericsson
+syn Synaptics, Inc.
ti Texas Instruments
toshiba Toshiba Corporation
toumaz Toumaz
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
index a51e6b4..57de579 100644
--- a/drivers/input/rmi4/rmi_bus.c
+++ b/drivers/input/rmi4/rmi_bus.c
@@ -52,14 +52,11 @@ bool rmi_is_physical_device(struct device *dev)
int rmi_register_transport_device(struct rmi_transport_dev *xport)
{
static atomic_t transport_device_count = ATOMIC_INIT(0);
- struct rmi_device_platform_data *pdata = xport->dev->platform_data;
struct rmi_device *rmi_dev;
int error;
- if (!pdata) {
- dev_err(xport->dev, "no platform data!\n");
- return -EINVAL;
- }
+ if (unlikely(!rmi_bus_type.p))
+ return -EPROBE_DEFER;
rmi_dev = kzalloc(sizeof(struct rmi_device), GFP_KERNEL);
if (!rmi_dev)
@@ -70,8 +67,10 @@ int rmi_register_transport_device(struct rmi_transport_dev *xport)
dev_set_name(&rmi_dev->dev, "sensor%02d", rmi_dev->number);
+ rmi_dev->dev.parent = xport->dev;
rmi_dev->dev.bus = &rmi_bus_type;
rmi_dev->dev.type = &rmi_device_type;
+ rmi_dev->dev.of_node = xport->dev->of_node;
xport->rmi_dev = rmi_dev;
@@ -206,6 +205,9 @@ int __rmi_register_function_handler(struct rmi_function_handler *handler,
struct device_driver *driver = &handler->driver;
int error;
+ if (WARN_ON(unlikely(!rmi_bus_type.p)))
+ return -EAGAIN;
+
driver->bus = &rmi_bus_type;
driver->owner = owner;
driver->mod_name = mod_name;
diff --git a/drivers/input/rmi4/rmi_bus.h b/drivers/input/rmi4/rmi_bus.h
index a21e4c4..51f9372 100644
--- a/drivers/input/rmi4/rmi_bus.h
+++ b/drivers/input/rmi4/rmi_bus.h
@@ -212,7 +212,8 @@ struct rmi_device {
};
#define to_rmi_device(d) container_of(d, struct rmi_device, dev)
-#define to_rmi_platform_data(d) ((d)->xport->dev->platform_data)
+#define to_rmi_xport_device(d) ((d)->xport->dev)
+#define to_rmi_platform_data(d) (dev_get_platdata(to_rmi_xport_device(d)))
bool rmi_is_physical_device(struct device *dev);
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 9ec7b93..92415ce 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -26,6 +26,8 @@
#include <linux/rmi.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/of_irq.h>
+#include <linux/of.h>
#include <uapi/linux/input.h>
#include "rmi_bus.h"
#include "rmi_driver.h"
@@ -498,7 +500,7 @@ static int create_function(struct rmi_device *rmi_dev,
* We have to do this before actually building the PDT because the reflash
* updates (if any) might cause various registers to move around.
*/
-static int rmi_initial_reset(struct rmi_device *rmi_dev)
+static int rmi_initial_reset(struct rmi_device *rmi_dev, u32 reset_delay)
{
struct pdt_entry pdt_entry;
int page;
@@ -507,8 +509,6 @@ static int rmi_initial_reset(struct rmi_device *rmi_dev)
bool has_f01 = false;
int i;
int retval;
- const struct rmi_device_platform_data *pdata =
- to_rmi_platform_data(rmi_dev);
dev_dbg(dev, "Initial reset.\n");
@@ -538,7 +538,7 @@ static int rmi_initial_reset(struct rmi_device *rmi_dev)
retval);
return retval;
}
- mdelay(pdata->reset_delay_ms);
+ mdelay(reset_delay);
done = true;
has_f01 = true;
break;
@@ -648,6 +648,8 @@ static int rmi_driver_probe(struct device *dev)
struct rmi_device_platform_data *pdata;
int retval = 0;
struct rmi_device *rmi_dev;
+ unsigned int irq;
+ u32 reset_delay;
dev_dbg(dev, "%s: Starting probe.\n", __func__);
@@ -661,6 +663,28 @@ static int rmi_driver_probe(struct device *dev)
rmi_dev->driver = rmi_driver;
pdata = to_rmi_platform_data(rmi_dev);
+ if (pdata == NULL) {
+#ifdef CONFIG_OF
+ const char *p;
+
+ p = "syn,reset-delay";
+ retval = of_property_read_u32(dev->of_node, p, &reset_delay);
+ if (retval && retval != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return -EINVAL;
+ }
+ if (retval == -EINVAL)
+ reset_delay = 0;
+
+ irq = irq_of_parse_and_map(dev->of_node, 0);
+#else
+ dev_err(dev, "No pdata\n");
+ return -EINVAL;
+#endif
+ } else {
+ reset_delay = pdata->reset_delay_ms;
+ irq = pdata->irq;
+ }
data = devm_kzalloc(dev, sizeof(struct rmi_driver_data), GFP_KERNEL);
if (!data) {
@@ -688,9 +712,9 @@ static int rmi_driver_probe(struct device *dev)
* and leave the customer's device unusable. So we warn them, and
* continue processing.
*/
- if (!pdata->reset_delay_ms)
- pdata->reset_delay_ms = DEFAULT_RESET_DELAY_MS;
- retval = rmi_initial_reset(rmi_dev);
+ if (!reset_delay)
+ reset_delay = DEFAULT_RESET_DELAY_MS;
+ retval = rmi_initial_reset(rmi_dev, reset_delay);
if (retval)
dev_warn(dev, "RMI initial reset failed! Continuing in spite of this.\n");
@@ -762,10 +786,10 @@ static int rmi_driver_probe(struct device *dev)
goto err_free_data;
}
- data->irq = pdata->irq;
- if (data->irq < 0) {
+ data->irq = irq;
+ if (data->irq < 0 || data->irq == NO_IRQ) {
dev_err(dev, "Failed to get attn IRQ.\n");
- retval = data->irq;
+ retval = -EINVAL;
goto err_free_data;
}
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index 4cb9fcb..22b57f2 100644
--- a/drivers/input/rmi4/rmi_f01.c
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -12,6 +12,7 @@
#include <linux/rmi.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/of.h>
#include "rmi_driver.h"
#define RMI_PRODUCT_ID_LENGTH 10
@@ -169,15 +170,104 @@ static int rmi_f01_read_properties(struct rmi_device *rmi_dev,
return 0;
}
+#ifdef CONFIG_OF
+static int rmi_f01_of_parse(struct device *dev,
+ struct rmi_f01_power_management *cdata)
+{
+ bool sleep, nosleep;
+ const char *p;
+ u32 val;
+ int rc;
+
+ if (dev->of_node == NULL)
+ return -EINVAL;
+
+ memset(cdata, 0, sizeof(*cdata));
+
+ sleep = of_property_read_bool(dev->of_node, "syn,power-sleep");
+ nosleep = of_property_read_bool(dev->of_node, "syn,power-nosleep");
+ if (sleep && nosleep) {
+ dev_err(dev, "'syn,power-sleep' and 'syn,power-nosleep' are mutually exclusive\n");
+ return -EINVAL;
+ }
+ if (sleep)
+ cdata->nosleep = RMI_F01_NOSLEEP_OFF;
+ else if (nosleep)
+ cdata->nosleep = RMI_F01_NOSLEEP_ON;
+
+ p = "syn,power-wakeup-thresh";
+ rc = of_property_read_u32(dev->of_node, p, &val);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if (val & ~0xff) {
+ dev_err(dev, "'%s' out of range [0-255]\n", p);
+ return -EINVAL;
+ }
+ cdata->wakeup_threshold = val;
+ }
+
+ p = "syn,power-doze-holdoff";
+ rc = of_property_read_u32(dev->of_node, p, &val);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if (val > 25500) {
+ dev_err(dev, "'%s' out of range [0-25500]ms\n", p);
+ return -EINVAL;
+ }
+ cdata->doze_holdoff = (val + 50) / 100;
+ }
+
+ p = "syn,power-doze-interval";
+ rc = of_property_read_u32(dev->of_node, p, &val);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if (val > 2550) {
+ dev_err(dev, "'%s' out of range [0-2550]ms\n", p);
+ return -EINVAL;
+ }
+ cdata->doze_interval = (val + 5) / 10;
+ }
+
+ return 0;
+}
+#else
+static int rmi_f01_of_parse(struct device *dev,
+ struct rmi_f01_power_management *cdata)
+{
+ return -EINVAL;
+}
+#endif
+
static int rmi_f01_initialize(struct rmi_function *fn)
{
u8 temp;
int error;
u16 ctrl_base_addr;
+ struct rmi_f01_power_management cdata;
struct rmi_device *rmi_dev = fn->rmi_dev;
+ struct device *dev = to_rmi_xport_device(rmi_dev);
struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev);
struct f01_data *data = fn->data;
- struct rmi_device_platform_data *pdata = to_rmi_platform_data(rmi_dev);
+ struct rmi_device_platform_data *pdata = dev_get_platdata(dev);
+
+ if (pdata != NULL) {
+ cdata = pdata->power_management;
+ } else {
+ error = rmi_f01_of_parse(dev, &cdata);
+ if (error) {
+ dev_err(dev, "Unable to parse DT data\n");
+ return error;
+ }
+ }
/*
* Set the configured bit and (optionally) other important stuff
@@ -191,7 +281,7 @@ static int rmi_f01_initialize(struct rmi_function *fn)
dev_err(&fn->dev, "Failed to read F01 control.\n");
return error;
}
- switch (pdata->power_management.nosleep) {
+ switch (cdata.nosleep) {
case RMI_F01_NOSLEEP_DEFAULT:
break;
case RMI_F01_NOSLEEP_OFF:
@@ -262,9 +352,9 @@ static int rmi_f01_initialize(struct rmi_function *fn)
data->doze_interval_addr = ctrl_base_addr;
ctrl_base_addr++;
- if (pdata->power_management.doze_interval) {
+ if (cdata.doze_interval) {
data->device_control.doze_interval =
- pdata->power_management.doze_interval;
+ cdata.doze_interval;
error = rmi_write(rmi_dev, data->doze_interval_addr,
data->device_control.doze_interval);
if (error < 0) {
@@ -283,9 +373,9 @@ static int rmi_f01_initialize(struct rmi_function *fn)
data->wakeup_threshold_addr = ctrl_base_addr;
ctrl_base_addr++;
- if (pdata->power_management.wakeup_threshold) {
+ if (cdata.wakeup_threshold) {
data->device_control.wakeup_threshold =
- pdata->power_management.wakeup_threshold;
+ cdata.wakeup_threshold;
error = rmi_write(rmi_dev, data->wakeup_threshold_addr,
data->device_control.wakeup_threshold);
if (error < 0) {
@@ -306,9 +396,8 @@ static int rmi_f01_initialize(struct rmi_function *fn)
data->doze_holdoff_addr = ctrl_base_addr;
ctrl_base_addr++;
- if (pdata->power_management.doze_holdoff) {
- data->device_control.doze_holdoff =
- pdata->power_management.doze_holdoff;
+ if (cdata.doze_holdoff) {
+ data->device_control.doze_holdoff = cdata.doze_holdoff;
error = rmi_write(rmi_dev, data->doze_holdoff_addr,
data->device_control.doze_holdoff);
if (error < 0) {
diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
index b114f25..837b6e7 100644
--- a/drivers/input/rmi4/rmi_f11.c
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -13,6 +13,7 @@
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/kconfig.h>
+#include <linux/of.h>
#include <linux/rmi.h>
#include <linux/slab.h>
#include "rmi_driver.h"
@@ -794,9 +795,120 @@ static void f11_set_abs_params(struct rmi_function *fn)
0, MT_TOOL_FINGER, 0, 0);
}
+#ifdef CONFIG_OF
+static int rmi_f11_of_parse(struct device *dev,
+ struct rmi_f11_sensor_data *cdata)
+{
+ const char *type;
+ const char *p;
+ u32 a[4];
+ int rc;
+
+ if (dev->of_node == NULL)
+ return -EINVAL;
+
+ memset(cdata, 0, sizeof(*cdata));
+
+ p = "syn,2d-rezero-wait";
+ rc = of_property_read_u32(dev->of_node, p, &a[0]);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if (a[0] & ~0xffff) {
+ dev_err(dev, "'%s' value out of range [0-65535]\n", p);
+ return -EINVAL;
+ }
+ cdata->rezero_wait = a[0];
+ }
+
+ cdata->type_a = of_property_read_bool(dev->of_node, "syn,2d-type-a");
+ cdata->axis_align.swap_axes = of_property_read_bool(dev->of_node,
+ "syn,2d-axis-swap");
+ cdata->axis_align.flip_x = of_property_read_bool(dev->of_node,
+ "syn,2d-flip-x");
+ cdata->axis_align.flip_y = of_property_read_bool(dev->of_node,
+ "syn,2d-flip-y");
+
+ p = "syn-2d-clip-range";
+ rc = of_property_read_u32_array(dev->of_node, p, a, 4);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if ((a[0] | a[1] | a[2] | a[3]) & ~0xffff) {
+ dev_err(dev, "'%s' values out of range [0-65535]\n", p);
+ return -EINVAL;
+ }
+ cdata->axis_align.clip_x_low = a[0];
+ cdata->axis_align.clip_y_low = a[1];
+ cdata->axis_align.clip_x_high = a[2];
+ cdata->axis_align.clip_y_high = a[3];
+ }
+
+ p = "syn-2d-offset";
+ rc = of_property_read_u32_array(dev->of_node, p, a, 2);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if ((a[0] | a[1]) & ~0xffff) {
+ dev_err(dev, "'%s' values out of range [0-65535]\n", p);
+ return -EINVAL;
+ }
+ cdata->axis_align.offset_x = a[0];
+ cdata->axis_align.offset_y = a[1];
+ }
+
+ p = "syn,2d-delta-thresh";
+ rc = of_property_read_u32_array(dev->of_node, p, a, 2);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if ((a[0] | a[1]) & ~0xff) {
+ dev_err(dev, "'%s' values out of range [0-255]\n", p);
+ return -EINVAL;
+ }
+ cdata->axis_align.delta_x_threshold = a[0];
+ cdata->axis_align.delta_y_threshold = a[1];
+ }
+
+ p = "syn,2d-sensor-type";
+ rc = of_property_read_string(dev->of_node, p, &type);
+ if (rc && rc != -EINVAL) {
+ dev_err(dev, "Invalid '%s' property\n", p);
+ return rc;
+ }
+ if (rc != -EINVAL) {
+ if (!strcmp(type, "direct")) {
+ cdata->sensor_type = RMI_F11_SENSOR_DIRECT;
+ } else if (!strcmp(type, "indirect")) {
+ cdata->sensor_type = RMI_F11_SENSOR_INDIRECT;
+ } else {
+ dev_err(dev, "'%s' must be one of: \"indirect\", \"direct\"\n", p);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+#else
+static int rmi_f11_of_parse(struct device *dev,
+ struct rmi_f11_sensor_data *cdata)
+{
+ return -EINVAL;
+}
+#endif
+
static int rmi_f11_initialize(struct rmi_function *fn)
{
struct rmi_device *rmi_dev = fn->rmi_dev;
+ struct device *dev = to_rmi_xport_device(rmi_dev);
struct f11_data *f11;
struct f11_2d_ctrl *ctrl;
u8 query_offset;
@@ -804,12 +916,23 @@ static int rmi_f11_initialize(struct rmi_function *fn)
u16 control_base_addr;
u16 max_x_pos, max_y_pos, temp;
int rc;
- struct rmi_device_platform_data *pdata = to_rmi_platform_data(rmi_dev);
+ struct rmi_device_platform_data *pdata = dev_get_platdata(dev);
+ struct rmi_f11_sensor_data cdata;
struct f11_2d_sensor *sensor;
u8 buf;
dev_dbg(&fn->dev, "Initializing F11 values.\n");
+ if (pdata != NULL) {
+ cdata = pdata->f11_sensor_data;
+ } else {
+ rc = rmi_f11_of_parse(dev, &cdata);
+ if (rc) {
+ dev_err(dev, "Unable to parse DT data\n");
+ return rc;
+ }
+ }
+
/*
** init instance data, fill in values and create any sysfs files
*/
@@ -818,7 +941,7 @@ static int rmi_f11_initialize(struct rmi_function *fn)
return -ENOMEM;
fn->data = f11;
- f11->rezero_wait_ms = pdata->f11_sensor_data.rezero_wait;
+ f11->rezero_wait_ms = cdata.rezero_wait;
query_base_addr = fn->fd.query_base_addr;
control_base_addr = fn->fd.control_base_addr;
@@ -851,9 +974,9 @@ static int rmi_f11_initialize(struct rmi_function *fn)
return rc;
}
- sensor->axis_align = pdata->f11_sensor_data.axis_align;
- sensor->type_a = pdata->f11_sensor_data.type_a;
- sensor->sensor_type = pdata->f11_sensor_data.sensor_type;
+ sensor->axis_align = cdata.axis_align;
+ sensor->type_a = cdata.type_a;
+ sensor->sensor_type = cdata.sensor_type;
rc = rmi_read_block(rmi_dev,
control_base_addr + F11_CTRL_SENSOR_MAX_X_POS_OFFSET,
diff --git a/drivers/input/rmi4/rmi_i2c.c b/drivers/input/rmi4/rmi_i2c.c
index aebf974..377d4cc 100644
--- a/drivers/input/rmi4/rmi_i2c.c
+++ b/drivers/input/rmi4/rmi_i2c.c
@@ -186,16 +186,9 @@ static const struct rmi_transport_ops rmi_i2c_ops = {
static int rmi_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- const struct rmi_device_platform_data *pdata =
- dev_get_platdata(&client->dev);
struct rmi_i2c_xport *rmi_i2c;
int retval;
- if (!pdata) {
- dev_err(&client->dev, "no platform data\n");
- return -EINVAL;
- }
-
dev_dbg(&client->dev, "Probing %#02x.\n", client->addr);
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
@@ -258,10 +251,20 @@ static const struct i2c_device_id rmi_id[] = {
};
MODULE_DEVICE_TABLE(i2c, rmi_id);
+#ifdef CONFIG_OF
+static struct of_device_id rmi_match_table[] = {
+ { .compatible = "syn,rmi_i2c", },
+ { },
+};
+#else
+#define rmi_match_table NULL
+#endif
+
static struct i2c_driver rmi_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
- .name = "rmi_i2c"
+ .name = "rmi_i2c",
+ .of_match_table = rmi_match_table,
},
.id_table = rmi_id,
.probe = rmi_i2c_probe,
--
1.8.1.5
--
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