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Input: synaptics - set minimum coordinates as reported by firmware

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Newer Synaptics firmware allows to query minimum coordinates reported by
the device, let's use this data.

Acked-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
2011-07-09 12:32:56 -07:00
parent 28d5fd860f
commit a66413fbc3
2 changed files with 43 additions and 21 deletions
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56
drivers/input/mouse/synaptics.c
View File

@@ -207,27 +207,37 @@ static int synaptics_identify(struct psmouse *psmouse)
static int synaptics_resolution(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char res[3];
unsigned char max[3];
unsigned char resp[3];
if (SYN_ID_MAJOR(priv->identity) < 4)
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 (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
priv->x_res = resp[0]; /* x resolution in units/mm */
priv->y_res = resp[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");
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
printk(KERN_ERR "Synaptics claims to have max coordinates"
" 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);
priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
}
}
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
printk(KERN_ERR "Synaptics claims to have min coordinates"
" query, but I'm not able to read it.\n");
} else {
priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
}
}
@@ -693,19 +703,27 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
__set_bit(INPUT_PROP_POINTER, dev->propbit);
__set_bit(EV_ABS, dev->evbit);
input_set_abs_params(dev, ABS_X, XMIN_NOMINAL,
priv->x_max ?: XMAX_NOMINAL, fuzz, 0);
input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL,
priv->y_max ?: YMAX_NOMINAL, fuzz, 0);
input_set_abs_params(dev, ABS_X,
priv->x_min ?: XMIN_NOMINAL,
priv->x_max ?: XMAX_NOMINAL,
fuzz, 0);
input_set_abs_params(dev, ABS_Y,
priv->y_min ?: YMIN_NOMINAL,
priv->y_max ?: YMAX_NOMINAL,
fuzz, 0);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
input_mt_init_slots(dev, 2);
input_set_abs_params(dev, ABS_MT_POSITION_X, XMIN_NOMINAL,
priv->x_max ?: XMAX_NOMINAL, fuzz, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, YMIN_NOMINAL,
priv->y_max ?: YMAX_NOMINAL, fuzz, 0);
input_set_abs_params(dev, ABS_MT_POSITION_X,
priv->x_min ?: XMIN_NOMINAL,
priv->x_max ?: XMAX_NOMINAL,
fuzz, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y,
priv->y_min ?: YMIN_NOMINAL,
priv->y_max ?: YMAX_NOMINAL,
fuzz, 0);
input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res);
input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res);