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authorJJ Ding <jj_ding@emc.com.tw>2011-11-20 22:21:45 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2011-11-20 22:28:30 -0800
commitb56b92a9a175faad4c182309a63f221219de9191 (patch)
treeebe64fc6ef97a084ebcab7cb9ce098fd6d3a93dd /drivers/input/mouse/elantech.c
parent8672bd93d3d67b18a2b067ece30dabcda11f8cde (diff)
Input: elantech - add support for elantech fast command
Starting with v3 hardware, the firmware supports this shorter elantech_send_cmd. Teach the driver to use it. Signed-off-by: JJ Ding <jj_ding@emc.com.tw> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/mouse/elantech.c')
-rw-r--r--drivers/input/mouse/elantech.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index b562392d0cd8..24bb2b5f5667 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -43,6 +43,24 @@ static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,
}
/*
+ * V3 and later support this fast command
+ */
+static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c,
+ unsigned char *param)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+
+ if (ps2_command(ps2dev, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+ ps2_command(ps2dev, NULL, c) ||
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
+ psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
* A retrying version of ps2_command
*/
static int elantech_ps2_command(struct psmouse *psmouse,
@@ -863,13 +881,13 @@ static int elantech_set_range(struct psmouse *psmouse,
i = (etd->fw_version > 0x020800 &&
etd->fw_version < 0x020900) ? 1 : 2;
- if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
return -1;
fixed_dpi = param[1] & 0x10;
if (((etd->fw_version >> 16) == 0x14) && fixed_dpi) {
- if (synaptics_send_cmd(psmouse, ETP_SAMPLE_QUERY, param))
+ if (etd->send_cmd(psmouse, ETP_SAMPLE_QUERY, param))
return -1;
*x_max = (etd->capabilities[1] - i) * param[1] / 2;
@@ -888,7 +906,7 @@ static int elantech_set_range(struct psmouse *psmouse,
break;
case 3:
- if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
return -1;
*x_max = (0x0f & param[0]) << 8 | param[1];
@@ -896,7 +914,7 @@ static int elantech_set_range(struct psmouse *psmouse,
break;
case 4:
- if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
return -1;
*x_max = (0x0f & param[0]) << 8 | param[1];
@@ -1220,9 +1238,11 @@ static int elantech_set_properties(struct elantech_data *etd)
else
return -1;
- /*
- * Turn on packet checking by default.
- */
+ /* decide which send_cmd we're gonna use early */
+ etd->send_cmd = etd->hw_version >= 3 ? elantech_send_cmd :
+ synaptics_send_cmd;
+
+ /* Turn on packet checking by default */
etd->paritycheck = 1;
/*
@@ -1278,7 +1298,7 @@ int elantech_init(struct psmouse *psmouse)
"assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n",
etd->hw_version, param[0], param[1], param[2]);
- if (synaptics_send_cmd(psmouse, ETP_CAPABILITIES_QUERY,
+ if (etd->send_cmd(psmouse, ETP_CAPABILITIES_QUERY,
etd->capabilities)) {
psmouse_err(psmouse, "failed to query capabilities.\n");
goto init_fail;