lkml.org 
[lkml]   [2019]   [Dec]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/6] Input: elantech - Add the function to get more bytes from register
Date
From: "Dave.Wang" <dave.wang@emc.com.tw>

Send an Elantech style special command to read three bytes from
register.

Signed-off-by: Dave Wang <dave.wang@emc.com.tw>
---
drivers/input/mouse/elantech.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 1f0d914acd78..afb87122b766 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -89,6 +89,24 @@ static int elantech_ps2_command(struct psmouse *psmouse,
return rc;
}

+/*
+ * Send an Elantech style special command to read 3 bytes from a register
+ */
+static int elantech_read_reg_params(struct psmouse *psmouse, unsigned char reg,
+ unsigned char *param)
+{
+ int rc = 0;
+
+ if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+ elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
+ elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+ elantech_ps2_command(psmouse, NULL, reg) ||
+ elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO))
+ rc = -1;
+
+ return rc;
+}
+
/*
* Send an Elantech style special command to read a value from a register
*/
--
2.17.1
\
 
 \ /
  Last update: 2019-12-09 04:15    [W:0.023 / U:3.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site