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    Subject[PATCH AUTOSEL 5.3 016/203] media: mtk-cir: lower de-glitch counter for rc-mm protocol
    Date
    From: Sean Young <sean@mess.org>

    [ Upstream commit 5dd4b89dc098bf22cd13e82a308f42a02c102b2b ]

    The rc-mm protocol can't be decoded by the mtk-cir since the de-glitch
    filter removes pulses/spaces shorter than 294 microseconds.

    Tested on a BananaPi R2.

    Signed-off-by: Sean Young <sean@mess.org>
    Acked-by: Sean Wang <sean.wang@kernel.org>
    Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/media/rc/mtk-cir.c | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/drivers/media/rc/mtk-cir.c b/drivers/media/rc/mtk-cir.c
    index 50fb0aebb8d40..f2259082e3d82 100644
    --- a/drivers/media/rc/mtk-cir.c
    +++ b/drivers/media/rc/mtk-cir.c
    @@ -35,6 +35,11 @@
    /* Fields containing pulse width data */
    #define MTK_WIDTH_MASK (GENMASK(7, 0))

    +/* IR threshold */
    +#define MTK_IRTHD 0x14
    +#define MTK_DG_CNT_MASK (GENMASK(12, 8))
    +#define MTK_DG_CNT(x) ((x) << 8)
    +
    /* Bit to enable interrupt */
    #define MTK_IRINT_EN BIT(0)

    @@ -398,6 +403,9 @@ static int mtk_ir_probe(struct platform_device *pdev)
    mtk_w32_mask(ir, val, ir->data->fields[MTK_HW_PERIOD].mask,
    ir->data->fields[MTK_HW_PERIOD].reg);

    + /* Set de-glitch counter */
    + mtk_w32_mask(ir, MTK_DG_CNT(1), MTK_DG_CNT_MASK, MTK_IRTHD);
    +
    /* Enable IR and PWM */
    val = mtk_r32(ir, MTK_CONFIG_HIGH_REG);
    val |= MTK_OK_COUNT(ir->data->ok_count) | MTK_PWM_EN | MTK_IR_EN;
    --
    2.20.1
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