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Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/input-leds.c8
-rw-r--r--drivers/input/mouse/alps.c2
-rw-r--r--drivers/input/rmi4/rmi_spi.c7
-rw-r--r--drivers/input/touchscreen/Kconfig2
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c200
5 files changed, 135 insertions, 84 deletions
diff --git a/drivers/input/input-leds.c b/drivers/input/input-leds.c
index 766bf2660116..5f04b2d94635 100644
--- a/drivers/input/input-leds.c
+++ b/drivers/input/input-leds.c
@@ -88,6 +88,7 @@ static int input_leds_connect(struct input_handler *handler,
const struct input_device_id *id)
{
struct input_leds *leds;
+ struct input_led *led;
unsigned int num_leds;
unsigned int led_code;
int led_no;
@@ -119,14 +120,13 @@ static int input_leds_connect(struct input_handler *handler,
led_no = 0;
for_each_set_bit(led_code, dev->ledbit, LED_CNT) {
- struct input_led *led = &leds->leds[led_no];
+ if (!input_led_info[led_code].name)
+ continue;
+ led = &leds->leds[led_no];
led->handle = &leds->handle;
led->code = led_code;
- if (!input_led_info[led_code].name)
- continue;
-
led->cdev.name = kasprintf(GFP_KERNEL, "%s::%s",
dev_name(&dev->dev),
input_led_info[led_code].name);
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 0a67f235ba88..38f9501acdf0 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -583,7 +583,7 @@ static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
- z = packet[4] & 0x7c;
+ z = packet[4] & 0x7f;
/*
* The x and y values tend to be quite large, and when used
diff --git a/drivers/input/rmi4/rmi_spi.c b/drivers/input/rmi4/rmi_spi.c
index 76edbf2c1bce..082defc329a8 100644
--- a/drivers/input/rmi4/rmi_spi.c
+++ b/drivers/input/rmi4/rmi_spi.c
@@ -147,8 +147,11 @@ static int rmi_spi_xfer(struct rmi_spi_xport *rmi_spi,
if (len > RMI_SPI_XFER_SIZE_LIMIT)
return -EINVAL;
- if (rmi_spi->xfer_buf_size < len)
- rmi_spi_manage_pools(rmi_spi, len);
+ if (rmi_spi->xfer_buf_size < len) {
+ ret = rmi_spi_manage_pools(rmi_spi, len);
+ if (ret < 0)
+ return ret;
+ }
if (addr == 0)
/*
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 4f15496fec8b..3e613afa10b4 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -362,7 +362,7 @@ config TOUCHSCREEN_HIDEEP
If unsure, say N.
- To compile this driver as a moudle, choose M here : the
+ To compile this driver as a module, choose M here : the
module will be called hideep_ts.
config TOUCHSCREEN_ILI210X
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 5d9699fe1b55..09194721aed2 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -280,7 +280,8 @@ struct mxt_data {
struct input_dev *input_dev;
char phys[64]; /* device physical location */
struct mxt_object *object_table;
- struct mxt_info info;
+ struct mxt_info *info;
+ void *raw_info_block;
unsigned int irq;
unsigned int max_x;
unsigned int max_y;
@@ -460,12 +461,13 @@ static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry)
{
u8 appmode = data->client->addr;
u8 bootloader;
+ u8 family_id = data->info ? data->info->family_id : 0;
switch (appmode) {
case 0x4a:
case 0x4b:
/* Chips after 1664S use different scheme */
- if (retry || data->info.family_id >= 0xa2) {
+ if (retry || family_id >= 0xa2) {
bootloader = appmode - 0x24;
break;
}
@@ -692,7 +694,7 @@ mxt_get_object(struct mxt_data *data, u8 type)
struct mxt_object *object;
int i;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
object = data->object_table + i;
if (object->type == type)
return object;
@@ -1462,12 +1464,12 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
data_pos += offset;
}
- if (cfg_info.family_id != data->info.family_id) {
+ if (cfg_info.family_id != data->info->family_id) {
dev_err(dev, "Family ID mismatch!\n");
return -EINVAL;
}
- if (cfg_info.variant_id != data->info.variant_id) {
+ if (cfg_info.variant_id != data->info->variant_id) {
dev_err(dev, "Variant ID mismatch!\n");
return -EINVAL;
}
@@ -1512,7 +1514,7 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg)
/* Malloc memory to store configuration */
cfg_start_ofs = MXT_OBJECT_START +
- data->info.object_num * sizeof(struct mxt_object) +
+ data->info->object_num * sizeof(struct mxt_object) +
MXT_INFO_CHECKSUM_SIZE;
config_mem_size = data->mem_size - cfg_start_ofs;
config_mem = kzalloc(config_mem_size, GFP_KERNEL);
@@ -1563,20 +1565,6 @@ release_mem:
return ret;
}
-static int mxt_get_info(struct mxt_data *data)
-{
- struct i2c_client *client = data->client;
- struct mxt_info *info = &data->info;
- int error;
-
- /* Read 7-byte info block starting at address 0 */
- error = __mxt_read_reg(client, 0, sizeof(*info), info);
- if (error)
- return error;
-
- return 0;
-}
-
static void mxt_free_input_device(struct mxt_data *data)
{
if (data->input_dev) {
@@ -1591,9 +1579,10 @@ static void mxt_free_object_table(struct mxt_data *data)
video_unregister_device(&data->dbg.vdev);
v4l2_device_unregister(&data->dbg.v4l2);
#endif
-
- kfree(data->object_table);
data->object_table = NULL;
+ data->info = NULL;
+ kfree(data->raw_info_block);
+ data->raw_info_block = NULL;
kfree(data->msg_buf);
data->msg_buf = NULL;
data->T5_address = 0;
@@ -1609,34 +1598,18 @@ static void mxt_free_object_table(struct mxt_data *data)
data->max_reportid = 0;
}
-static int mxt_get_object_table(struct mxt_data *data)
+static int mxt_parse_object_table(struct mxt_data *data,
+ struct mxt_object *object_table)
{
struct i2c_client *client = data->client;
- size_t table_size;
- struct mxt_object *object_table;
- int error;
int i;
u8 reportid;
u16 end_address;
- table_size = data->info.object_num * sizeof(struct mxt_object);
- object_table = kzalloc(table_size, GFP_KERNEL);
- if (!object_table) {
- dev_err(&data->client->dev, "Failed to allocate memory\n");
- return -ENOMEM;
- }
-
- error = __mxt_read_reg(client, MXT_OBJECT_START, table_size,
- object_table);
- if (error) {
- kfree(object_table);
- return error;
- }
-
/* Valid Report IDs start counting from 1 */
reportid = 1;
data->mem_size = 0;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
struct mxt_object *object = object_table + i;
u8 min_id, max_id;
@@ -1660,8 +1633,8 @@ static int mxt_get_object_table(struct mxt_data *data)
switch (object->type) {
case MXT_GEN_MESSAGE_T5:
- if (data->info.family_id == 0x80 &&
- data->info.version < 0x20) {
+ if (data->info->family_id == 0x80 &&
+ data->info->version < 0x20) {
/*
* On mXT224 firmware versions prior to V2.0
* read and discard unused CRC byte otherwise
@@ -1716,24 +1689,102 @@ static int mxt_get_object_table(struct mxt_data *data)
/* If T44 exists, T5 position has to be directly after */
if (data->T44_address && (data->T5_address != data->T44_address + 1)) {
dev_err(&client->dev, "Invalid T44 position\n");
- error = -EINVAL;
- goto free_object_table;
+ return -EINVAL;
}
data->msg_buf = kcalloc(data->max_reportid,
data->T5_msg_size, GFP_KERNEL);
- if (!data->msg_buf) {
- dev_err(&client->dev, "Failed to allocate message buffer\n");
+ if (!data->msg_buf)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int mxt_read_info_block(struct mxt_data *data)
+{
+ struct i2c_client *client = data->client;
+ int error;
+ size_t size;
+ void *id_buf, *buf;
+ uint8_t num_objects;
+ u32 calculated_crc;
+ u8 *crc_ptr;
+
+ /* If info block already allocated, free it */
+ if (data->raw_info_block)
+ mxt_free_object_table(data);
+
+ /* Read 7-byte ID information block starting at address 0 */
+ size = sizeof(struct mxt_info);
+ id_buf = kzalloc(size, GFP_KERNEL);
+ if (!id_buf)
+ return -ENOMEM;
+
+ error = __mxt_read_reg(client, 0, size, id_buf);
+ if (error)
+ goto err_free_mem;
+
+ /* Resize buffer to give space for rest of info block */
+ num_objects = ((struct mxt_info *)id_buf)->object_num;
+ size += (num_objects * sizeof(struct mxt_object))
+ + MXT_INFO_CHECKSUM_SIZE;
+
+ buf = krealloc(id_buf, size, GFP_KERNEL);
+ if (!buf) {
error = -ENOMEM;
- goto free_object_table;
+ goto err_free_mem;
+ }
+ id_buf = buf;
+
+ /* Read rest of info block */
+ error = __mxt_read_reg(client, MXT_OBJECT_START,
+ size - MXT_OBJECT_START,
+ id_buf + MXT_OBJECT_START);
+ if (error)
+ goto err_free_mem;
+
+ /* Extract & calculate checksum */
+ crc_ptr = id_buf + size - MXT_INFO_CHECKSUM_SIZE;
+ data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16);
+
+ calculated_crc = mxt_calculate_crc(id_buf, 0,
+ size - MXT_INFO_CHECKSUM_SIZE);
+
+ /*
+ * CRC mismatch can be caused by data corruption due to I2C comms
+ * issue or else device is not using Object Based Protocol (eg i2c-hid)
+ */
+ if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) {
+ dev_err(&client->dev,
+ "Info Block CRC error calculated=0x%06X read=0x%06X\n",
+ calculated_crc, data->info_crc);
+ error = -EIO;
+ goto err_free_mem;
+ }
+
+ data->raw_info_block = id_buf;
+ data->info = (struct mxt_info *)id_buf;
+
+ dev_info(&client->dev,
+ "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
+ data->info->family_id, data->info->variant_id,
+ data->info->version >> 4, data->info->version & 0xf,
+ data->info->build, data->info->object_num);
+
+ /* Parse object table information */
+ error = mxt_parse_object_table(data, id_buf + MXT_OBJECT_START);
+ if (error) {
+ dev_err(&client->dev, "Error %d parsing object table\n", error);
+ mxt_free_object_table(data);
+ goto err_free_mem;
}
- data->object_table = object_table;
+ data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START);
return 0;
-free_object_table:
- mxt_free_object_table(data);
+err_free_mem:
+ kfree(id_buf);
return error;
}
@@ -2046,7 +2097,7 @@ static int mxt_initialize(struct mxt_data *data)
int error;
while (1) {
- error = mxt_get_info(data);
+ error = mxt_read_info_block(data);
if (!error)
break;
@@ -2077,16 +2128,9 @@ static int mxt_initialize(struct mxt_data *data)
msleep(MXT_FW_RESET_TIME);
}
- /* Get object table information */
- error = mxt_get_object_table(data);
- if (error) {
- dev_err(&client->dev, "Error %d reading object table\n", error);
- return error;
- }
-
error = mxt_acquire_irq(data);
if (error)
- goto err_free_object_table;
+ return error;
error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME,
&client->dev, GFP_KERNEL, data,
@@ -2094,14 +2138,10 @@ static int mxt_initialize(struct mxt_data *data)
if (error) {
dev_err(&client->dev, "Failed to invoke firmware loader: %d\n",
error);
- goto err_free_object_table;
+ return error;
}
return 0;
-
-err_free_object_table:
- mxt_free_object_table(data);
- return error;
}
static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep)
@@ -2162,7 +2202,7 @@ recheck:
static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x,
unsigned int y)
{
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
struct mxt_dbg *dbg = &data->dbg;
unsigned int ofs, page;
unsigned int col = 0;
@@ -2490,7 +2530,7 @@ static const struct video_device mxt_video_device = {
static void mxt_debug_init(struct mxt_data *data)
{
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
struct mxt_dbg *dbg = &data->dbg;
struct mxt_object *object;
int error;
@@ -2576,7 +2616,6 @@ static int mxt_configure_objects(struct mxt_data *data,
const struct firmware *cfg)
{
struct device *dev = &data->client->dev;
- struct mxt_info *info = &data->info;
int error;
error = mxt_init_t7_power_cfg(data);
@@ -2601,11 +2640,6 @@ static int mxt_configure_objects(struct mxt_data *data,
mxt_debug_init(data);
- dev_info(dev,
- "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n",
- info->family_id, info->variant_id, info->version >> 4,
- info->version & 0xf, info->build, info->object_num);
-
return 0;
}
@@ -2614,7 +2648,7 @@ static ssize_t mxt_fw_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mxt_data *data = dev_get_drvdata(dev);
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n",
info->version >> 4, info->version & 0xf, info->build);
}
@@ -2624,7 +2658,7 @@ static ssize_t mxt_hw_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mxt_data *data = dev_get_drvdata(dev);
- struct mxt_info *info = &data->info;
+ struct mxt_info *info = data->info;
return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
info->family_id, info->variant_id);
}
@@ -2663,7 +2697,7 @@ static ssize_t mxt_object_show(struct device *dev,
return -ENOMEM;
error = 0;
- for (i = 0; i < data->info.object_num; i++) {
+ for (i = 0; i < data->info->object_num; i++) {
object = data->object_table + i;
if (!mxt_object_readable(object->type))
@@ -3035,6 +3069,15 @@ static const struct dmi_system_id mxt_dmi_table[] = {
.driver_data = samus_platform_data,
},
{
+ /* Samsung Chromebook Pro */
+ .ident = "Samsung Chromebook Pro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Google"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Caroline"),
+ },
+ .driver_data = samus_platform_data,
+ },
+ {
/* Other Google Chromebooks */
.ident = "Chromebook",
.matches = {
@@ -3254,6 +3297,11 @@ static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume);
static const struct of_device_id mxt_of_match[] = {
{ .compatible = "atmel,maxtouch", },
+ /* Compatibles listed below are deprecated */
+ { .compatible = "atmel,qt602240_ts", },
+ { .compatible = "atmel,atmel_mxt_ts", },
+ { .compatible = "atmel,atmel_mxt_tp", },
+ { .compatible = "atmel,mXT224", },
{},
};
MODULE_DEVICE_TABLE(of, mxt_of_match);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-26 02:40:11 +0000