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HID: wacom: Centralize Intuos pen packet decoding
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Continue to slim down 'wacom_intuos_irq' by moving all decoding and
reporting of pen packet data into the  'wacom_intuos_general' function.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Jason Gerecke authored and Jiri Kosina committed Dec 2, 2015
1 parent c7f0522 commit 16e0a6a
Showing 1 changed file with 54 additions and 51 deletions.
105 changes: 54 additions & 51 deletions drivers/hid/wacom_wac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -880,13 +880,28 @@ static int wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
return 0;
}

static void wacom_intuos_general(struct wacom_wac *wacom)
static int wacom_intuos_general(struct wacom_wac *wacom)
{
struct wacom_features *features = &wacom->features;
unsigned char *data = wacom->data;
struct input_dev *input = wacom->pen_input;
int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
unsigned int t;

if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_CINTIQ &&
data[0] != WACOM_REPORT_INTUOS_PEN)
return 0;

if (features->type >= INTUOS3S) {
input_report_abs(input, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
input_report_abs(input, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
input_report_abs(input, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
} else {
input_report_abs(input, ABS_X, be16_to_cpup((__be16 *)&data[2]));
input_report_abs(input, ABS_Y, be16_to_cpup((__be16 *)&data[4]));
input_report_abs(input, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
}

/* general pen packet */
if ((data[1] & 0xb8) == 0xa0) {
t = (data[6] << 2) | ((data[7] >> 6) & 3);
Expand All @@ -912,55 +927,6 @@ static void wacom_intuos_general(struct wacom_wac *wacom)
(((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
}
}

static int wacom_intuos_irq(struct wacom_wac *wacom)
{
struct wacom_features *features = &wacom->features;
unsigned char *data = wacom->data;
struct input_dev *input = wacom->pen_input;
unsigned int t;
int idx = 0, result;

if (data[0] != WACOM_REPORT_PENABLED &&
data[0] != WACOM_REPORT_INTUOSREAD &&
data[0] != WACOM_REPORT_INTUOSWRITE &&
data[0] != WACOM_REPORT_INTUOSPAD &&
data[0] != WACOM_REPORT_INTUOS_PEN &&
data[0] != WACOM_REPORT_CINTIQ &&
data[0] != WACOM_REPORT_CINTIQPAD &&
data[0] != WACOM_REPORT_INTUOS5PAD) {
dev_dbg(input->dev.parent,
"%s: received unknown report #%d\n", __func__, data[0]);
return 0;
}

/* tool number */
if (features->type == INTUOS)
idx = data[1] & 0x01;

/* process pad events */
result = wacom_intuos_pad(wacom);
if (result)
return result;

/* process in/out prox events */
result = wacom_intuos_inout(wacom);
if (result)
return result - 1;

if (features->type >= INTUOS3S) {
input_report_abs(input, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
input_report_abs(input, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
input_report_abs(input, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
} else {
input_report_abs(input, ABS_X, be16_to_cpup((__be16 *)&data[2]));
input_report_abs(input, ABS_Y, be16_to_cpup((__be16 *)&data[4]));
input_report_abs(input, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
}

/* process general packets */
wacom_intuos_general(wacom);

/* 4D mouse, 2D mouse, marker pen rotation, tilt mouse, or Lens cursor packets */
if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0 || (data[1] & 0xbc) == 0xac) {
Expand Down Expand Up @@ -1036,7 +1002,44 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
input_report_key(input, wacom->tool[idx], 1);
input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
wacom->reporting_data = true;
return 1;
return 2;
}

static int wacom_intuos_irq(struct wacom_wac *wacom)
{
unsigned char *data = wacom->data;
struct input_dev *input = wacom->pen_input;
int result;

if (data[0] != WACOM_REPORT_PENABLED &&
data[0] != WACOM_REPORT_INTUOSREAD &&
data[0] != WACOM_REPORT_INTUOSWRITE &&
data[0] != WACOM_REPORT_INTUOSPAD &&
data[0] != WACOM_REPORT_INTUOS_PEN &&
data[0] != WACOM_REPORT_CINTIQ &&
data[0] != WACOM_REPORT_CINTIQPAD &&
data[0] != WACOM_REPORT_INTUOS5PAD) {
dev_dbg(input->dev.parent,
"%s: received unknown report #%d\n", __func__, data[0]);
return 0;
}

/* process pad events */
result = wacom_intuos_pad(wacom);
if (result)
return result;

/* process in/out prox events */
result = wacom_intuos_inout(wacom);
if (result)
return result - 1;

/* process general packets */
result = wacom_intuos_general(wacom);
if (result)
return result - 1;

return 0;
}

static int int_dist(int x1, int y1, int x2, int y2)
Expand Down

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