[PATCH V3 4/5] mfd: palmas: support IRQ inversion at the board level

[Alexandre Courbot]

Stephen, any news about this patch? I'm waiting for it to be merged in
order to resend some Tegra DTs, but still cannot see it in -next.

Thanks,
Alex.

On Tue, Mar 4, 2014 at 4:51 AM, Stephen Warren <swarren at wwwdotorg.org> wrote:
> From: Stephen Warren <swarren at nvidia.com>
>
> Implement the new DT property ti,irq-externally-inverted, and add an
> equivalent platform data field to match. This allows the driver to
> correctly automatically configure the IRQ output polarity when the board
> or SoC contains an inverter between the Palmas IRQ output and IRQ
> controller input.
>
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
> v3:
> * Use an IRQD flag to represent the data, rather than a custom DT property.
> v2:
> * Split V1's patch 1/2 into separate patches 1/3 and 2/3.
> ---
>  drivers/mfd/palmas.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
> index d280d789e55a..3281d4103e9d 100644
> --- a/drivers/mfd/palmas.c
> +++ b/drivers/mfd/palmas.c
> @@ -292,7 +292,8 @@ static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
>                 return -EINVAL;
>         }
>
> -       pdata->irq_flags = irqd_get_trigger_type(irq_data);
> +       pdata->irq_flags = irqd_get_trigger_type(irq_data) |
> +                          irqd_get_src_dst_inverted(irq_data);
>         dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags);
>         return 0;
>  }
> @@ -447,6 +448,8 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
>                 reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
>         else
>                 reg = 0;
> +       if (pdata->irq_flags & IRQ_SRC_DST_INVERTED)
> +               reg ^= PALMAS_POLARITY_CTRL_INT_POLARITY;
>         ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
>                         PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
>                         reg);
> --
> 1.8.1.5
>
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