[PATCH v3 5/6] drm/msm/dpu: stop using raw IRQ indices in the kernel output

[Marijn Suijten]

On 2023-07-29 02:31:59, Dmitry Baryshkov wrote:
> In preparation to reworking IRQ indcies, stop using raw indices in
> kernel output (both printk and debugfs). Instead use a pair of register
> index and bit. This corresponds closer to the values in HW catalog.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> ---
>  .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 49 ++++++++++++-------
>  1 file changed, 31 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> index 308b122059cd..6071d3f05b0c 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> @@ -199,6 +199,7 @@ static const struct dpu_intr_reg dpu_intr_set_7xxx[] = {
>  
>  #define DPU_IRQ_REG(irq_idx)	(irq_idx / 32)
>  #define DPU_IRQ_MASK(irq_idx)	(BIT(irq_idx % 32))
> +#define DPU_IRQ_BIT(irq_idx)	(ffs(DPU_IRQ_MASK(irq_idx)) - 1)

Another nit: I'd find it clearer to define DPU_IRQ_MASK in terms of
DPU_IRQ_BIT[_INDEX...] than the other way around, because this is just
irq_idx%32.

- Marijn