Re: [PATCH 09/25] drm/msm/dpu: make RM iterator static

Sean Paul
2018-10-10T14:51:36Z

On Mon, Oct 08, 2018 at 09:27:26PM -0700, Jeykumar Sankaran wrote:
> HW blocks reserved for a display are stored in crtc state.
> No one outside RM is interested in using these API's for
> HW block list iterations.
>
> Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>

Reviewed-by: Sean Paul <seanpaul@chromium.org>

> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 37 ++++++++++++++-------------
> drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 46 ----------------------------------
> 2 files changed, 20 insertions(+), 63 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> index 619b596..24fc1c7 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> @@ -49,12 +49,26 @@ struct dpu_rm_hw_blk {
> struct dpu_hw_blk *hw;
> };
>
> +/**
> + * struct dpu_rm_hw_iter - iterator for use with dpu_rm
> + * @hw: dpu_hw object requested, or NULL on failure
> + * @blk: dpu_rm internal block representation. Clients ignore. Used as iterator.
> + * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder
> + * @type: Hardware Block Type client wishes to search for.
> + */
> +struct dpu_rm_hw_iter {
> + void *hw;
> + struct dpu_rm_hw_blk *blk;
> + uint32_t enc_id;
> + enum dpu_hw_blk_type type;
> +};
> +
> struct dpu_hw_mdp *dpu_rm_get_mdp(struct dpu_rm *rm)
> {
> return rm->hw_mdp;
> }
>
> -void dpu_rm_init_hw_iter(
> +static void _dpu_rm_init_hw_iter(
> struct dpu_rm_hw_iter *iter,
> uint32_t enc_id,
> enum dpu_hw_blk_type type)
> @@ -97,17 +111,6 @@ static bool _dpu_rm_get_hw_locked(struct dpu_rm *rm, struct dpu_rm_hw_iter *i)
> return false;
> }
>
> -bool dpu_rm_get_hw(struct dpu_rm *rm, struct dpu_rm_hw_iter *i)
> -{
> - bool ret;
> -
> - mutex_lock(&rm->rm_lock);
> - ret = _dpu_rm_get_hw_locked(rm, i);
> - mutex_unlock(&rm->rm_lock);
> -
> - return ret;
> -}
> -
> static void _dpu_rm_hw_destroy(enum dpu_hw_blk_type type, void *hw)
> {
> switch (type) {
> @@ -365,7 +368,7 @@ static bool _dpu_rm_check_lm_and_get_connected_blks(
> return false;
> }
>
> - dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_PINGPONG);
> + _dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_PINGPONG);
> while (_dpu_rm_get_hw_locked(rm, &iter)) {
> if (iter.blk->id == lm_cfg->pingpong) {
> *pp = iter.blk;
> @@ -404,7 +407,7 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, uint32_t enc_id,
> }
>
> /* Find a primary mixer */
> - dpu_rm_init_hw_iter(&iter_i, 0, DPU_HW_BLK_LM);
> + _dpu_rm_init_hw_iter(&iter_i, 0, DPU_HW_BLK_LM);
> while (lm_count != reqs->topology.num_lm &&
> _dpu_rm_get_hw_locked(rm, &iter_i)) {
> memset(&lm, 0, sizeof(lm));
> @@ -421,7 +424,7 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, uint32_t enc_id,
> ++lm_count;
>
> /* Valid primary mixer found, find matching peers */
> - dpu_rm_init_hw_iter(&iter_j, 0, DPU_HW_BLK_LM);
> + _dpu_rm_init_hw_iter(&iter_j, 0, DPU_HW_BLK_LM);
>
> while (lm_count != reqs->topology.num_lm &&
> _dpu_rm_get_hw_locked(rm, &iter_j)) {
> @@ -480,7 +483,7 @@ static int _dpu_rm_reserve_ctls(
>
> needs_split_display = _dpu_rm_needs_split_display(top);
>
> - dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_CTL);
> + _dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_CTL);
> while (_dpu_rm_get_hw_locked(rm, &iter)) {
> const struct dpu_hw_ctl *ctl = to_dpu_hw_ctl(iter.blk->hw);
> unsigned long features = ctl->caps->features;
> @@ -528,7 +531,7 @@ static struct dpu_rm_hw_blk *_dpu_rm_reserve_intf(
> struct dpu_rm_hw_iter iter;
>
> /* Find the block entry in the rm, and note the reservation */
> - dpu_rm_init_hw_iter(&iter, 0, type);
> + _dpu_rm_init_hw_iter(&iter, 0, type);
> while (_dpu_rm_get_hw_locked(rm, &iter)) {
> if (iter.blk->id != id)
> continue;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> index e48e8f2..c7e3b2b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> @@ -36,26 +36,6 @@ struct dpu_rm {
> };
>
> /**
> - * struct dpu_rm_hw_blk - resource manager internal structure
> - * forward declaration for single iterator definition without void pointer
> - */
> -struct dpu_rm_hw_blk;
> -
> -/**
> - * struct dpu_rm_hw_iter - iterator for use with dpu_rm
> - * @hw: dpu_hw object requested, or NULL on failure
> - * @blk: dpu_rm internal block representation. Clients ignore. Used as iterator.
> - * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder
> - * @type: Hardware Block Type client wishes to search for.
> - */
> -struct dpu_rm_hw_iter {
> - void *hw;
> - struct dpu_rm_hw_blk *blk;
> - uint32_t enc_id;
> - enum dpu_hw_blk_type type;
> -};
> -
> -/**
> * dpu_rm_init - Read hardware catalog and create reservation tracking objects
> * for all HW blocks.
> * @rm: DPU Resource Manager handle
> @@ -110,30 +90,4 @@ int dpu_rm_reserve(struct dpu_rm *rm,
> * @Return: Pointer to hw block or NULL
> */
> struct dpu_hw_mdp *dpu_rm_get_mdp(struct dpu_rm *rm);
> -
> -/**
> - * dpu_rm_init_hw_iter - setup given iterator for new iteration over hw list
> - * using dpu_rm_get_hw
> - * @iter: iter object to initialize
> - * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder
> - * @type: Hardware Block Type client wishes to search for.
> - */
> -void dpu_rm_init_hw_iter(
> - struct dpu_rm_hw_iter *iter,
> - uint32_t enc_id,
> - enum dpu_hw_blk_type type);
> -/**
> - * dpu_rm_get_hw - retrieve reserved hw object given encoder and hw type
> - * Meant to do a single pass through the hardware list to iteratively
> - * retrieve hardware blocks of a given type for a given encoder.
> - * Initialize an iterator object.
> - * Set hw block type of interest. Set encoder id of interest, 0 for any.
> - * Function returns first hw of type for that encoder.
> - * Subsequent calls will return the next reserved hw of that type in-order.
> - * Iterator HW pointer will be null on failure to find hw.
> - * @rm: DPU Resource Manager handle
> - * @iter: iterator object
> - * @Return: true on match found, false on no match found
> - */
> -bool dpu_rm_get_hw(struct dpu_rm *rm, struct dpu_rm_hw_iter *iter);
> #endif /* __DPU_RM_H__ */
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>

--
Sean Paul, Software Engineer, Google / Chromium OS