[PATCH 3/6] Input: elantech - Increace and correct device information for pattern 0,1,2

[Dave Wang <dave.wang@xxxxxxxxxx>]

From: "Dave.Wang" <dave.wang@xxxxxxxxxx>

Get and correct the device informations including fw_checksum, iap_checksum,
ic_body, iap_version from differnet pattern.

Signed-off-by: Dave Wang <dave.wang@xxxxxxxxxx>
---
 drivers/input/mouse/elantech.c | 47 +++++++++++++++++++++++++++++++++-
 drivers/input/mouse/elantech.h |  8 ++++++
 2 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index afb87122b766..322b181d00e9 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -857,7 +857,8 @@ static int elantech_packet_check_v4(struct psmouse *psmouse)
 	 */
 	if (etd->info.crc_enabled)
 		sanity_check = ((packet[3] & 0x08) == 0x00);
-	else if (ic_version == 7 && etd->info.samples[1] == 0x2A)
+	else if (ic_version == 7 && etd->info.samples[1] == 0x2A &&
+			etd->info.pattern == 0x00)
 		sanity_check = ((packet[3] & 0x1c) == 0x10);
 	else
 		sanity_check = ((packet[0] & 0x08) == 0x00 &&
@@ -1669,6 +1670,50 @@ static int elantech_query_info(struct psmouse *psmouse,
 			     info->samples[2]);
 	}
 
+	if (elantech_read_reg_params(psmouse, ETP_FW_CHECKSUM_QUERY,
+				info->fw_checksum)) {
+		psmouse_err(psmouse, "failed to get fw checksum\n");
+		return -EINVAL;
+	}
+	psmouse_info(psmouse,
+			 "Elan fw checksum result %02x, %02x, %02x\n",
+			 info->fw_checksum[0],
+			 info->fw_checksum[1],
+			 info->fw_checksum[2]);
+
+	if (elantech_read_reg_params(psmouse, ETP_IAP_CHECKSUM_QUERY,
+				info->iap_checksum)) {
+		psmouse_err(psmouse, "failed to get iap checksum\n");
+		return -EINVAL;
+	}
+	psmouse_info(psmouse,
+			 "Elan iap checksum result %02x, %02x, %02x\n",
+			 info->iap_checksum[0],
+			 info->iap_checksum[1],
+			 info->iap_checksum[2]);
+
+	if (info->pattern > 0x00) {
+		if (info->send_cmd(psmouse, ETP_ICBODY_QUERY, info->ic_body)) {
+			psmouse_err(psmouse, "failed to query ic body\n");
+			return -EINVAL;
+		}
+		psmouse_info(psmouse,
+			     "Elan ic body : %02x%02x, fw version : %02x\n",
+			     info->ic_body[0],
+			     info->ic_body[1],
+			     info->ic_body[2]);
+
+		if (info->send_cmd(psmouse, ETP_IAP_VERSION_QUERY,
+					info->iap_version)) {
+			psmouse_err(psmouse, "failed to query iap version\n");
+			return -EINVAL;
+		}
+		psmouse_info(psmouse,
+			     "Elan iap interface type : %02x, iap version : %02x\n",
+			     info->iap_version[1],
+			     info->iap_version[2]);
+	}
+
 	if (info->samples[1] == 0x74 && info->hw_version == 0x03) {
 		/*
 		 * This module has a bug which makes absolute mode
diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index 0aae6a9de8f0..a633ffa0eb07 100644
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -18,6 +18,10 @@
 #define ETP_CAPABILITIES_QUERY		0x02
 #define ETP_SAMPLE_QUERY		0x03
 #define ETP_RESOLUTION_QUERY		0x04
+#define ETP_ICBODY_QUERY		0x05
+#define ETP_IAP_VERSION_QUERY		0x06
+#define ETP_IAP_CHECKSUM_QUERY		0x0A
+#define ETP_FW_CHECKSUM_QUERY		0xFE
 
 /*
  * Command values for register reading or writing
@@ -138,6 +142,10 @@ struct finger_pos {
 struct elantech_device_info {
 	unsigned char capabilities[3];
 	unsigned char samples[3];
+	unsigned char fw_checksum[3];
+	unsigned char iap_checksum[3];
+	unsigned char ic_body[3];
+	unsigned char iap_version[3];
 	unsigned char debug;
 	unsigned char hw_version;
 	unsigned char pattern;
-- 
2.17.1