[PATCH 21/21 v5] Input: atmel_mxt_ts - parse T6 reports
From: Daniel Kurtz <hidden>
Date: 2012-06-26 06:58:13
Also in:
lkml
Subsystem:
atmel maxtouch driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Nick Dyer, Dmitry Torokhov, Linus Torvalds
The normal messages sent after boot or NVRAM update are T6 reports, containing a status, and the config memory checksum. Parse them and dump a useful info message. This patch tested on an MXT224E. Signed-off-by: Daniel Kurtz <redacted> --- drivers/input/touchscreen/atmel_mxt_ts.c | 21 ++++++++++++++------- 1 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index f9a9be9..8350bcc 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c@@ -248,6 +248,7 @@ struct mxt_data { unsigned int max_y; /* Cached parameters from object table */ + u8 T6_reportid; u8 T9_reportid_min; u8 T9_reportid_max; };
@@ -555,8 +556,6 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id) struct device *dev = &data->client->dev; int id; u8 reportid; - u8 max_reportid; - u8 min_reportid; bool update_input = false; do {
@@ -567,11 +566,15 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id) reportid = message.reportid; - max_reportid = data->T9_reportid_max; - min_reportid = data->T9_reportid_min; - id = reportid - min_reportid; - - if (reportid >= min_reportid && reportid <= max_reportid) { + if (reportid == data->T6_reportid) { + unsigned csum = message.message[1] | + (message.message[2] << 8) | + (message.message[3] << 16); + dev_dbg(dev, "Status: %02x Config Checksum: %06x\n", + message.message[0], csum); + } else if (reportid >= data->T9_reportid_min && + reportid <= data->T9_reportid_max) { + id = reportid - data->T9_reportid_min; mxt_input_touchevent(data, &message, id); update_input = true; } else {
@@ -749,6 +752,9 @@ static int mxt_get_object_table(struct mxt_data *data) object->instances + 1, min_id, max_id); switch (object->type) { + case MXT_GEN_COMMAND_T6: + data->T6_reportid = min_id; + break; case MXT_TOUCH_MULTI_T9: data->T9_reportid_min = min_id; data->T9_reportid_max = max_id;
@@ -1008,6 +1014,7 @@ static ssize_t mxt_update_fw_store(struct device *dev, /* Destroy old object table and any cached fields */ kfree(data->object_table); data->object_table = NULL; + data->T6_reportid = 0; data->T9_reportid_min = 0; data->T9_reportid_max = 0;
--
1.7.7.3