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path: root/drivers/input/mouse/bcm5974.c
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Diffstat (limited to 'drivers/input/mouse/bcm5974.c')
-rw-r--r--drivers/input/mouse/bcm5974.c255
1 files changed, 111 insertions, 144 deletions
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 2de974ce56b..e8cfb386418 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -200,10 +200,9 @@ struct tp_finger {
/* device-specific parameters */
struct bcm5974_param {
- int dim; /* logical dimension */
- int fuzz; /* logical noise value */
- int devmin; /* device minimum reading */
- int devmax; /* device maximum reading */
+ int snratio; /* signal-to-noise ratio */
+ int min; /* device minimum reading */
+ int max; /* device maximum reading */
};
/* device-specific configuration */
@@ -220,6 +219,7 @@ struct bcm5974_config {
struct bcm5974_param w; /* finger width limits */
struct bcm5974_param x; /* horizontal limits */
struct bcm5974_param y; /* vertical limits */
+ struct bcm5974_param o; /* orientation limits */
};
/* logical device structure */
@@ -235,23 +235,13 @@ struct bcm5974 {
struct bt_data *bt_data; /* button transferred data */
struct urb *tp_urb; /* trackpad usb request block */
u8 *tp_data; /* trackpad transferred data */
- int fingers; /* number of fingers on trackpad */
};
-/* logical dimensions */
-#define DIM_PRESSURE 256 /* maximum finger pressure */
-#define DIM_WIDTH 16 /* maximum finger width */
-#define DIM_X 1280 /* maximum trackpad x value */
-#define DIM_Y 800 /* maximum trackpad y value */
-
/* logical signal quality */
#define SN_PRESSURE 45 /* pressure signal-to-noise ratio */
#define SN_WIDTH 100 /* width signal-to-noise ratio */
#define SN_COORD 250 /* coordinate signal-to-noise ratio */
-
-/* pressure thresholds */
-#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE)
-#define PRESSURE_HIGH (3 * PRESSURE_LOW)
+#define SN_ORIENT 10 /* orientation signal-to-noise ratio */
/* device constants */
static const struct bcm5974_config bcm5974_config_table[] = {
@@ -262,10 +252,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
0,
0x84, sizeof(struct bt_data),
0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4824, 5342 },
- { DIM_Y, DIM_Y / SN_COORD, -172, 5820 }
+ { SN_PRESSURE, 0, 256 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4824, 5342 },
+ { SN_COORD, -172, 5820 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI,
@@ -274,10 +265,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
0,
0x84, sizeof(struct bt_data),
0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4824, 4824 },
- { DIM_Y, DIM_Y / SN_COORD, -172, 4290 }
+ { SN_PRESSURE, 0, 256 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4824, 4824 },
+ { SN_COORD, -172, 4290 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI,
@@ -286,10 +278,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4460, 5166 },
- { DIM_Y, DIM_Y / SN_COORD, -75, 6700 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4460, 5166 },
+ { SN_COORD, -75, 6700 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI,
@@ -298,10 +291,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4620, 5140 },
- { DIM_Y, DIM_Y / SN_COORD, -150, 6600 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4620, 5140 },
+ { SN_COORD, -150, 6600 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI,
@@ -310,10 +304,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4616, 5112 },
- { DIM_Y, DIM_Y / SN_COORD, -142, 5234 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4616, 5112 },
+ { SN_COORD, -142, 5234 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI,
@@ -322,10 +317,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4415, 5050 },
- { DIM_Y, DIM_Y / SN_COORD, -55, 6680 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4415, 5050 },
+ { SN_COORD, -55, 6680 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI,
@@ -334,10 +330,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4620, 5140 },
- { DIM_Y, DIM_Y / SN_COORD, -150, 6600 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4620, 5140 },
+ { SN_COORD, -150, 6600 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI,
@@ -346,10 +343,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4750, 5280 },
- { DIM_Y, DIM_Y / SN_COORD, -150, 6730 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4750, 5280 },
+ { SN_COORD, -150, 6730 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI,
@@ -358,10 +356,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4620, 5140 },
- { DIM_Y, DIM_Y / SN_COORD, -150, 6600 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4620, 5140 },
+ { SN_COORD, -150, 6600 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{
USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI,
@@ -370,10 +369,11 @@ static const struct bcm5974_config bcm5974_config_table[] = {
HAS_INTEGRATED_BUTTON,
0x84, sizeof(struct bt_data),
0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
- { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
- { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
- { DIM_X, DIM_X / SN_COORD, -4750, 5280 },
- { DIM_Y, DIM_Y / SN_COORD, -150, 6730 }
+ { SN_PRESSURE, 0, 300 },
+ { SN_WIDTH, 0, 2048 },
+ { SN_COORD, -4750, 5280 },
+ { SN_COORD, -150, 6730 },
+ { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION }
},
{}
};
@@ -397,18 +397,11 @@ static inline int raw2int(__le16 x)
return (signed short)le16_to_cpu(x);
}
-/* scale device data to logical dimensions (asserts devmin < devmax) */
-static inline int int2scale(const struct bcm5974_param *p, int x)
+static void set_abs(struct input_dev *input, unsigned int code,
+ const struct bcm5974_param *p)
{
- return x * p->dim / (p->devmax - p->devmin);
-}
-
-/* all logical value ranges are [0,dim). */
-static inline int int2bound(const struct bcm5974_param *p, int x)
-{
- int s = int2scale(p, x);
-
- return clamp_val(s, 0, p->dim - 1);
+ int fuzz = p->snratio ? (p->max - p->min) / p->snratio : 0;
+ input_set_abs_params(input, code, p->min, p->max, fuzz, 0);
}
/* setup which logical events to report */
@@ -417,34 +410,25 @@ static void setup_events_to_report(struct input_dev *input_dev,
{
__set_bit(EV_ABS, input_dev->evbit);
- input_set_abs_params(input_dev, ABS_PRESSURE,
- 0, cfg->p.dim, cfg->p.fuzz, 0);
- input_set_abs_params(input_dev, ABS_TOOL_WIDTH,
- 0, cfg->w.dim, cfg->w.fuzz, 0);
- input_set_abs_params(input_dev, ABS_X,
- 0, cfg->x.dim, cfg->x.fuzz, 0);
- input_set_abs_params(input_dev, ABS_Y,
- 0, cfg->y.dim, cfg->y.fuzz, 0);
+ /* for synaptics only */
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256, 5, 0);
+ input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 16, 0, 0);
+
+ /* pointer emulation */
+ set_abs(input_dev, ABS_X, &cfg->x);
+ set_abs(input_dev, ABS_Y, &cfg->y);
/* finger touch area */
- input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
- cfg->w.devmin, cfg->w.devmax, 0, 0);
- input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR,
- cfg->w.devmin, cfg->w.devmax, 0, 0);
+ set_abs(input_dev, ABS_MT_TOUCH_MAJOR, &cfg->w);
+ set_abs(input_dev, ABS_MT_TOUCH_MINOR, &cfg->w);
/* finger approach area */
- input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR,
- cfg->w.devmin, cfg->w.devmax, 0, 0);
- input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR,
- cfg->w.devmin, cfg->w.devmax, 0, 0);
+ set_abs(input_dev, ABS_MT_WIDTH_MAJOR, &cfg->w);
+ set_abs(input_dev, ABS_MT_WIDTH_MINOR, &cfg->w);
/* finger orientation */
- input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
- -MAX_FINGER_ORIENTATION,
- MAX_FINGER_ORIENTATION, 0, 0);
+ set_abs(input_dev, ABS_MT_ORIENTATION, &cfg->o);
/* finger position */
- input_set_abs_params(input_dev, ABS_MT_POSITION_X,
- cfg->x.devmin, cfg->x.devmax, 0, 0);
- input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
- cfg->y.devmin, cfg->y.devmax, 0, 0);
+ set_abs(input_dev, ABS_MT_POSITION_X, &cfg->x);
+ set_abs(input_dev, ABS_MT_POSITION_Y, &cfg->y);
__set_bit(EV_KEY, input_dev->evbit);
__set_bit(BTN_TOUCH, input_dev->keybit);
@@ -494,19 +478,37 @@ static void report_finger_data(struct input_dev *input,
MAX_FINGER_ORIENTATION - raw2int(f->orientation));
input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x));
input_report_abs(input, ABS_MT_POSITION_Y,
- cfg->y.devmin + cfg->y.devmax - raw2int(f->abs_y));
+ cfg->y.min + cfg->y.max - raw2int(f->abs_y));
input_mt_sync(input);
}
+static void report_synaptics_data(struct input_dev *input,
+ const struct bcm5974_config *cfg,
+ const struct tp_finger *f, int raw_n)
+{
+ int abs_p = 0, abs_w = 0;
+
+ if (raw_n) {
+ int p = raw2int(f->touch_major);
+ int w = raw2int(f->tool_major);
+ if (p > 0 && raw2int(f->origin)) {
+ abs_p = clamp_val(256 * p / cfg->p.max, 0, 255);
+ abs_w = clamp_val(16 * w / cfg->w.max, 0, 15);
+ }
+ }
+
+ input_report_abs(input, ABS_PRESSURE, abs_p);
+ input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
+}
+
/* report trackpad data as logical trackpad state */
static int report_tp_state(struct bcm5974 *dev, int size)
{
const struct bcm5974_config *c = &dev->cfg;
const struct tp_finger *f;
struct input_dev *input = dev->input;
- int raw_p, raw_w, raw_x, raw_y, raw_n, i;
- int ptest, origin, ibt = 0, nmin = 0, nmax = 0;
- int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0;
+ int raw_n, i;
+ int abs_x = 0, abs_y = 0, n = 0;
if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0)
return -EIO;
@@ -522,69 +524,34 @@ static int report_tp_state(struct bcm5974 *dev, int size)
for (i = 0; i < raw_n; i++)
report_finger_data(input, c, &f[i]);
- raw_p = raw2int(f->touch_major);
- raw_w = raw2int(f->tool_major);
- raw_x = raw2int(f->abs_x);
- raw_y = raw2int(f->abs_y);
-
- dprintk(9,
- "bcm5974: "
- "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n",
- raw_p, raw_w, raw_x, raw_y, raw_n);
-
- ptest = int2bound(&c->p, raw_p);
- origin = raw2int(f->origin);
-
/* while tracking finger still valid, count all fingers */
- if (ptest > PRESSURE_LOW && origin) {
- abs_p = ptest;
- abs_w = int2bound(&c->w, raw_w);
- abs_x = int2bound(&c->x, raw_x - c->x.devmin);
- abs_y = int2bound(&c->y, c->y.devmax - raw_y);
- while (raw_n--) {
- ptest = int2bound(&c->p,
- raw2int(f->touch_major));
- if (ptest > PRESSURE_LOW)
- nmax++;
- if (ptest > PRESSURE_HIGH)
- nmin++;
- f++;
- }
+ if (raw2int(f->touch_major) > 0 && raw2int(f->origin)) {
+ abs_x = raw2int(f->abs_x);
+ abs_y = c->y.min + c->y.max - raw2int(f->abs_y);
+ for (i = 0; i < raw_n; i++)
+ if (raw2int(f[i].touch_major) > 0)
+ n++;
}
}
- /* set the integrated button if applicable */
- if (c->tp_type == TYPE2)
- ibt = raw2int(dev->tp_data[BUTTON_TYPE2]);
-
- if (dev->fingers < nmin)
- dev->fingers = nmin;
- if (dev->fingers > nmax)
- dev->fingers = nmax;
+ input_report_key(input, BTN_TOUCH, n > 0);
+ input_report_key(input, BTN_TOOL_FINGER, n == 1);
+ input_report_key(input, BTN_TOOL_DOUBLETAP, n == 2);
+ input_report_key(input, BTN_TOOL_TRIPLETAP, n == 3);
+ input_report_key(input, BTN_TOOL_QUADTAP, n > 3);
- input_report_key(input, BTN_TOUCH, dev->fingers > 0);
- input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1);
- input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2);
- input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3);
- input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3);
+ report_synaptics_data(input, c, f, raw_n);
- input_report_abs(input, ABS_PRESSURE, abs_p);
- input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
-
- if (abs_p) {
+ if (n > 0) {
input_report_abs(input, ABS_X, abs_x);
input_report_abs(input, ABS_Y, abs_y);
-
- dprintk(8,
- "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d "
- "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w,
- abs_x, abs_y, nmin, nmax, dev->fingers, ibt);
-
}
/* type 2 reports button events via ibt only */
- if (c->tp_type == TYPE2)
+ if (c->tp_type == TYPE2) {
+ int ibt = raw2int(dev->tp_data[BUTTON_TYPE2]);
input_report_key(input, BTN_LEFT, ibt);
+ }
input_sync(input);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-02 04:43:00 +0000