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Subject[PATCH 1/2] Input: atmel_mxt_ts - output status from T48 Noise Suppression
Date
From: Nick Dyer <nick.dyer@itdev.co.uk>

This patch outputs status from T48 Noise Suppression

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Acked-by: Benson Leung <bleung@chromium.org>
Acked-by: Yufeng Shen <miletus@chromium.org>
(cherry picked from ndyer/linux/for-upstream commit 2895a6ff150a49f27a02938f8d262be238b296d8)
Signed-off-by: George G. Davis <george_davis@mentor.com>
[jiada: Replace bits with symbolic names,
Fixed typo in commit title & message]
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 32 ++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index a2189739e30f..729c8dcb9cd1 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -153,6 +153,13 @@ struct t37_debug {
#define MXT_RESET_VALUE 0x01
#define MXT_BACKUP_VALUE 0x55

+/* Define for MXT_PROCG_NOISESUPPRESSION_T48 */
+#define MXT_T48_MSG_NOISESUP_FREQCHG BIT(0)
+#define MXT_T48_MSG_NOISESUP_APXCHG BIT(1)
+#define MXT_T48_MSG_NOISESUP_ALGOERR BIT(2)
+#define MXT_T48_MSG_NOISESUP_STATCHG BIT(4)
+#define MXT_T48_MSG_NOISESUP_NLVLCHG BIT(5)
+
/* T100 Multiple Touch Touchscreen */
#define MXT_T100_CTRL 0
#define MXT_T100_CFG1 1
@@ -320,6 +327,7 @@ struct mxt_data {
u8 T9_reportid_max;
u8 T19_reportid;
u16 T44_address;
+ u8 T48_reportid;
u8 T100_reportid_min;
u8 T100_reportid_max;

@@ -952,6 +960,24 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
data->update_input = true;
}

+static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg)
+{
+ struct device *dev = &data->client->dev;
+ u8 status, state;
+
+ status = msg[1];
+ state = msg[4];
+
+ dev_dbg(dev, "T48 state %d status %02X %s%s%s%s%s\n", state, status,
+ status & MXT_T48_MSG_NOISESUP_FREQCHG ? "FREQCHG " : "",
+ status & MXT_T48_MSG_NOISESUP_APXCHG ? "APXCHG " : "",
+ status & MXT_T48_MSG_NOISESUP_ALGOERR ? "ALGOERR " : "",
+ status & MXT_T48_MSG_NOISESUP_STATCHG ? "STATCHG " : "",
+ status & MXT_T48_MSG_NOISESUP_NLVLCHG ? "NLVLCHG " : "");
+
+ return 0;
+}
+
static int mxt_proc_message(struct mxt_data *data, u8 *message)
{
u8 report_id = message[0];
@@ -961,6 +987,8 @@ static int mxt_proc_message(struct mxt_data *data, u8 *message)

if (report_id == data->T6_reportid) {
mxt_proc_t6_messages(data, message);
+ } else if (report_id == data->T48_reportid) {
+ mxt_proc_t48_messages(data, message);
} else if (!data->input_dev) {
/*
* Do not report events if input device
@@ -1606,6 +1634,7 @@ static void mxt_free_object_table(struct mxt_data *data)
data->T9_reportid_max = 0;
data->T19_reportid = 0;
data->T44_address = 0;
+ data->T48_reportid = 0;
data->T100_reportid_min = 0;
data->T100_reportid_max = 0;
data->max_reportid = 0;
@@ -1684,6 +1713,9 @@ static int mxt_parse_object_table(struct mxt_data *data,
case MXT_SPT_GPIOPWM_T19:
data->T19_reportid = min_id;
break;
+ case MXT_PROCG_NOISESUPPRESSION_T48:
+ data->T48_reportid = min_id;
+ break;
case MXT_TOUCH_MULTITOUCHSCREEN_T100:
data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100;
data->T100_reportid_min = min_id;
--
2.17.1
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