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Date: Thu, 2 Jul 2015 10:51:02 -0700 From: Andrew Duggan <aduggan@...aptics.com> To: Benjamin Tissoires <benjamin.tissoires@...hat.com>, Dmitry Torokhov <dmitry.torokhov@...il.com>, Christopher Heiny <cheiny@...aptics.com>, Allie Xiong <axiong@...aptics.com> CC: Stephen Chandler Paul <cpaul@...hat.com>, <benjamin.tissoires@...il.com>, <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Vincent Huang <vincent.huang@...synaptics.com> Subject: Re: [PATCH 09/11] Input: synaptics-rmi4 - f11: clean up rmi_f11_finger_handler On 06/23/2015 12:17 PM, Benjamin Tissoires wrote: > abs_bit and rel_bits should not be computed at each iteration of the for > loop. > finger_press_count is unused. > Break out rmi_f11_parse_finger_state in its own function. > > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com> > --- Reviewed-by: Andrew Duggan <aduggan@...aptics.com> > drivers/input/rmi4/rmi_f11.c | 33 +++++++++++++-------------------- > 1 file changed, 13 insertions(+), 20 deletions(-) > > diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c > index 061530a..77a18aa 100644 > --- a/drivers/input/rmi4/rmi_f11.c > +++ b/drivers/input/rmi4/rmi_f11.c > @@ -695,43 +695,36 @@ static void rmi_f11_abs_pos_report(struct f11_data *f11, > input_mt_sync(input); > } > > +static inline u8 rmi_f11_parse_finger_state(const u8 *f_state, u8 n_finger) > +{ > + return (f_state[n_finger / 4] >> (2 * (n_finger % 4))) & > + FINGER_STATE_MASK; > +} > + > static void rmi_f11_finger_handler(struct f11_data *f11, > struct f11_2d_sensor *sensor, > unsigned long *irq_bits, int num_irq_regs) > { > const u8 *f_state = sensor->data.f_state; > u8 finger_state; > - u8 finger_pressed_count; > u8 i; > > - int rel_bits; > - int abs_bits; > + int abs_bits = bitmap_and(f11->result_bits, irq_bits, f11->abs_mask, > + num_irq_regs * 8); > + int rel_bits = bitmap_and(f11->result_bits, irq_bits, f11->rel_mask, > + num_irq_regs * 8); > > - for (i = 0, finger_pressed_count = 0; i < sensor->nbr_fingers; i++) { > + for (i = 0; i < sensor->nbr_fingers; i++) { > /* Possible of having 4 fingers per f_statet register */ > - finger_state = (f_state[i / 4] >> (2 * (i % 4))) & > - FINGER_STATE_MASK; > - switch (finger_state) { > - case F11_RESERVED: > + finger_state = rmi_f11_parse_finger_state(f_state, i); > + if (finger_state == F11_RESERVED) { > pr_err("Invalid finger state[%d]: 0x%02x", i, finger_state); > continue; > - > - case F11_PRESENT: > - case F11_INACCURATE: > - finger_pressed_count++; > - break; > - > - case F11_NO_FINGER: > - break; > } > > - abs_bits = bitmap_and(f11->result_bits, irq_bits, f11->abs_mask, > - num_irq_regs * 8); > if (abs_bits) > rmi_f11_abs_pos_report(f11, sensor, finger_state, i); > > - rel_bits = bitmap_and(f11->result_bits, irq_bits, f11->rel_mask, > - num_irq_regs * 8); > if (rel_bits) > rmi_f11_rel_pos_report(sensor, i); > } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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