On Thu, Jun 14, 2012 at 3:50 PM, Felipe Balbi <balbi@xxxxxx> wrote:
> According to flow diagrams on OMAP TRMs,
> we should ACK the IRQ as they happen.
>
> Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> ---
> drivers/i2c/busses/i2c-omap.c | 29 +++++++++++++++++------------
> 1 file changed, 17 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
> index f978b14..c00ba7d 100644
> --- a/drivers/i2c/busses/i2c-omap.c
> +++ b/drivers/i2c/busses/i2c-omap.c
> @@ -894,21 +894,20 @@ omap_i2c_isr(int this_irq, void *dev_id)
> }
>
> complete:
> - /*
> - * Ack the stat in one go, but [R/X]DR and [R/X]RDY should be
> - * acked after the data operation is complete.
> - * Ref: TRM SWPU114Q Figure 18-31
> - */
> - omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, stat &
> - ~(OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
> - OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
> -
> - if (stat & OMAP_I2C_STAT_NACK)
> + if (stat & OMAP_I2C_STAT_NACK) {
> + dev_err(dev->dev, "No Acknowledge\n");
> err |= OMAP_I2C_STAT_NACK;
> + omap_i2c_ack_stat(dev, OMAP_I2C_STAT_NACK);
> + omap_i2c_complete_cmd(dev, err);
> + return IRQ_HANDLED;
> + }
>
Do you think making I2C IRQ ack + complete as one small static inline function
can save clean the code further. I see it has been used in multiple paths.
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