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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-05-10 23:06:52 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-05-19 10:15:29 -0700
commit83ba9ea8a04b72dfee2515428c15e7414ba4fc61 (patch)
tree01e8dbcbdb3062054cf2bfa788add25de73d99ac /drivers
parenta083632eaf6231162b33e40561cfec6a9c156945 (diff)
Input: synaptics - set dimensions as reported by firmware
Newer Synaptics firmware allows to query maximim dimensions reported by device, let's use this data. Tested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/input/mouse/synaptics.c32
-rw-r--r--drivers/input/mouse/synaptics.h6
2 files changed, 27 insertions, 11 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index ebd7a99efeae..52bb1de32e4e 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -36,6 +36,8 @@
* The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
* section 2.3.2, which says that they should be valid regardless of the
* actual size of the sensor.
+ * Note that newer firmware allows querying device for maximum useable
+ * coordinates.
*/
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
@@ -194,23 +196,33 @@ static int synaptics_identify(struct psmouse *psmouse)
}
/*
- * Read touchpad resolution
+ * Read touchpad resolution and maximum reported coordinates
* Resolution is left zero if touchpad does not support the query
*/
static int synaptics_resolution(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char res[3];
+ unsigned char max[3];
if (SYN_ID_MAJOR(priv->identity) < 4)
- return 0;
- if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res))
- return 0;
+ if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res) == 0) {
+ if (res[0] != 0 && (res[1] & 0x80) && res[2] != 0) {
+ priv->x_res = res[0]; /* x resolution in units/mm */
+ priv->y_res = res[2]; /* y resolution in units/mm */
+ }
+ }
- if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) {
- priv->x_res = res[0]; /* x resolution in units/mm */
- priv->y_res = res[2]; /* y resolution in units/mm */
+ if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
+ SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
+ if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_DIMENSIONS, max)) {
+ printk(KERN_ERR "Synaptics claims to have dimensions query,"
+ " but I'm not able to read it.\n");
+ } else {
+ priv->x_max = (max[0] << 5) | ((max[1] & 0x0f) << 1);
+ priv->y_max = (max[2] << 5) | ((max[1] & 0xf0) >> 3);
+ }
}
return 0;
@@ -578,8 +590,10 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
int i;
__set_bit(EV_ABS, dev->evbit);
- input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
- input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
+ input_set_abs_params(dev, ABS_X,
+ XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
+ input_set_abs_params(dev, ABS_Y,
+ YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
__set_bit(ABS_TOOL_WIDTH, dev->absbit);
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index ae37c5d162a4..7d4d5e12c0df 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -19,6 +19,7 @@
#define SYN_QUE_RESOLUTION 0x08
#define SYN_QUE_EXT_CAPAB 0x09
#define SYN_QUE_EXT_CAPAB_0C 0x0c
+#define SYN_QUE_EXT_DIMENSIONS 0x0d
/* synatics modes */
#define SYN_BIT_ABSOLUTE_MODE (1 << 7)
@@ -51,6 +52,7 @@
#define SYN_CAP_MULTI_BUTTON_NO(ec) (((ec) & 0x00f000) >> 12)
#define SYN_CAP_PRODUCT_ID(ec) (((ec) & 0xff0000) >> 16)
#define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & 0x100100)
+#define SYN_CAP_MAX_DIMENSIONS(ex0c) ((ex0c) & 0x020000)
/* synaptics modes query bits */
#define SYN_MODE_ABSOLUTE(m) ((m) & (1 << 7))
@@ -101,8 +103,8 @@ struct synaptics_data {
unsigned long int ext_cap; /* Extended Capabilities */
unsigned long int ext_cap_0c; /* Ext Caps from 0x0c query */
unsigned long int identity; /* Identification */
- int x_res; /* X resolution in units/mm */
- int y_res; /* Y resolution in units/mm */
+ unsigned int x_res, y_res; /* X/Y resolution in units/mm */
+ unsigned int x_max, y_max; /* Max dimensions (from FW) */
unsigned char pkt_type; /* packet type - old, new, etc */
unsigned char mode; /* current mode byte */

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