diff options
| -rw-r--r-- | drivers/input/touchscreen/atmel_mxt_ts.c | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index c8cfd7b3dc9e..ee37b0b0e0e4 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -877,6 +877,24 @@ static void mxt_calc_resolution(struct mxt_data *data) } } +static ssize_t mxt_show_instance(char *buf, int count, + struct mxt_object *object, int instance, + const u8 *val) +{ + int i; + + if (object->instances > 0) + count += scnprintf(buf + count, PAGE_SIZE - count, + "Instance %u\n", instance); + + for (i = 0; i < object->size + 1; i++) + count += scnprintf(buf + count, PAGE_SIZE - count, + "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); + count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); + + return count; +} + static ssize_t mxt_object_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -885,7 +903,6 @@ static ssize_t mxt_object_show(struct device *dev, int count = 0; int i, j; int error; - u8 val; u8 *obuf; /* Pre-allocate buffer large enough to hold max sized object. */ @@ -903,20 +920,19 @@ static ssize_t mxt_object_show(struct device *dev, count += scnprintf(buf + count, PAGE_SIZE - count, "T%u:\n", object->type); - error = __mxt_read_reg(data->client, object->start_address, - object->size + 1, obuf); - if (error) - break; + for (j = 0; j < object->instances + 1; j++) { + u16 size = object->size + 1; + u16 addr = object->start_address + j * size; - for (j = 0; j < object->size + 1; j++) { - val = obuf[j]; + error = __mxt_read_reg(data->client, addr, size, obuf); + if (error) + goto done; - count += scnprintf(buf + count, PAGE_SIZE - count, - "\t[%2d]: %02x (%d)\n", j, val, val); + count = mxt_show_instance(buf, count, object, j, obuf); } - count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); } +done: kfree(obuf); return error ?: count; } |