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Commit 34252a43 authored by Chetan C R's avatar Chetan C R Committed by Chetan C R
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msm: keypad: fix matrix row/column scan issue on msm8905 qrd 



Due to weak pull up of column and weak row pull down
mute/unmute key issue observed during VT call. So,
ignoring half level voltage due to weak Pull Up/Down
fixes the issue from driver side.

Change-Id: Ic5886ccec8f5cf8b276372108318416cec28507b
Signed-off-by: default avatarChetan C R <cravin@codeaurora.org>
parent af0c859a

drivers/input/keyboard/matrix_keypad.c

+8 −6
Original line number Diff line number Diff line
@@ -131,12 +131,14 @@ static void matrix_keypad_scan(struct work_struct *work) 
	/* assert each column and read the row status out */

	for (col = 0; col < pdata->num_col_gpios; col++) {



		for (row = 0; row < pdata->num_row_gpios; row++) {

			activate_col(pdata, col, true);



		for (row = 0; row < pdata->num_row_gpios; row++)

			new_state[col] |=

				row_asserted(pdata, row) ? (1 << row) : 0;



			gpio_direction_output(pdata->col_gpios[col], 0);

			new_state[col] &=

				row_asserted(pdata, row) ? ~(1 << row) : ~(0);

		}

		if (new_state[col])

			count_state++;

		activate_col(pdata, col, false);