[Intel-gfx] [PATCH v2 2/2] drm/i915: Introduce intel_reg_types.h

[Michal Wajdeczko]

On Tue, 20 Aug 2019 04:01:47 +0200, Daniele Ceraolo Spurio  
<daniele.ceraolospurio at intel.com> wrote:


> diff --git a/drivers/gpu/drm/i915/intel_reg_types.h  
> b/drivers/gpu/drm/i915/intel_reg_types.h
> new file mode 100644
> index 000000000000..87bce80dd5ed
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/intel_reg_types.h


> +
> +typedef struct {
> +	u32 reg;
> +} i915_reg_t;
> +
> +#define _MMIO(r) ((const i915_reg_t){ .reg = (r) })
> +
> +#define INVALID_MMIO_REG _MMIO(0)
> +
> +static inline u32 i915_mmio_reg_offset(i915_reg_t reg)
> +{
> +	return reg.reg;
> +}
> +
> +static inline bool i915_mmio_reg_equal(i915_reg_t a, i915_reg_t b)
> +{
> +	return i915_mmio_reg_offset(a) == i915_mmio_reg_offset(b);
> +}
> +
> +static inline bool i915_mmio_reg_valid(i915_reg_t reg)
> +{
> +	return !i915_mmio_reg_equal(reg, INVALID_MMIO_REG);
> +}
> +

hmm, there is now disconnection between prefixes in:

	'intel'_reg_types.h
and
	'i915'_reg_t
	'i915'_mmio_reg_xxx()

that is why I was suggesting to keep:

	'i915'_reg.h (or at your preference 'i915'_reg_types.h)
with
	'i915'_reg_t
	'i915'_mmio_reg_xxx()

and use intel_reg* files for actual hw definitions.

if we don't plan to rename i915_reg_t into intel_mmio_reg_t
then maybe better to stay with i915_reg_types.h ?

Michal

ps. i915/intel prefix rules are killing me too ;)