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Input: psmouse - create helper for reporting standard buttons/motion

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Many protocol driver re-implement code to parse buttons or motion data from
the standard PS/2 protocol. Let's split the parsing into separate
functions and reuse them in protocol drivers.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov
2017-02-07 17:07:44 -08:00
parent d8a5b80568
commit 1ef8580539
7 changed files with 50 additions and 71 deletions
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26
drivers/input/mouse/psmouse-base.c
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@@ -116,13 +116,30 @@ static DEFINE_MUTEX(psmouse_mutex);
static struct workqueue_struct *kpsmoused_wq;
static void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons)
void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons)
{
input_report_key(dev, BTN_LEFT, buttons & BIT(0));
input_report_key(dev, BTN_MIDDLE, buttons & BIT(2));
input_report_key(dev, BTN_RIGHT, buttons & BIT(1));
}
void psmouse_report_standard_motion(struct input_dev *dev, u8 *packet)
{
int x, y;
x = packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0;
y = packet[2] ? packet[2] - ((packet[0] << 3) & 0x100) : 0;
input_report_rel(dev, REL_X, x);
input_report_rel(dev, REL_Y, -y);
}
void psmouse_report_standard_packet(struct input_dev *dev, u8 *packet)
{
psmouse_report_standard_buttons(dev, packet[0]);
psmouse_report_standard_motion(dev, packet);
}
/*
* psmouse_process_byte() analyzes the PS/2 data stream and reports
* relevant events to the input module once full packet has arrived.
@@ -195,11 +212,8 @@ psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
}
/* Generic PS/2 Mouse */
psmouse_report_standard_buttons(dev,
packet[0] | psmouse->extra_buttons);
input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
packet[0] |= psmouse->extra_buttons;
psmouse_report_standard_packet(dev, packet);
input_sync(dev);