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drm/msm/dpu: Refactor resource manager

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Track hardware resource objects in arrays rather than
a list and remove the resource manager's iterator idiom. Separate
the mapping of hardware resources to an encoder ID into a different
array.

Use an implicit mapping between the hardware blocks' ids, which
are 1-based, and array indices in these arrays to replace iteration
with index lookups in several places.

Signed-off-by: Drew Davenport <ddavenport@chromium.org>
[squash in minor compiler warning fixes]
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Drew Davenport
2020-02-19 10:42:26 -07:00
committed by Rob Clark
parent b954fa6baa
commit bb00a452d6
2 changed files with 263 additions and 328 deletions
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569
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
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22
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
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@@ -11,15 +11,31 @@
#include "msm_kms.h"
#include "dpu_hw_top.h"
/**
* struct dpu_rm - DPU dynamic hardware resource manager
* @hw_blks: array of lists of hardware resources present in the system, one
* list per type of hardware block
* @pingpong_blks: array of pingpong hardware resources
* @mixer_blks: array of layer mixer hardware resources
* @ctl_blks: array of ctl hardware resources
* @intf_blks: array of intf hardware resources
* @pingpong_to_enc_id: mapping of pingpong hardware resources to an encoder ID
* @mixer_to_enc_id: mapping of mixer hardware resources to an encoder ID
* @ctl_to_enc_id: mapping of ctl hardware resources to an encoder ID
* @intf_to_enc_id: mapping of intf hardware resources to an encoder ID
* @lm_max_width: cached layer mixer maximum width
* @rm_lock: resource manager mutex
*/
struct dpu_rm {
struct list_head hw_blks[DPU_HW_BLK_MAX];
struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
uint32_t pingpong_to_enc_id[PINGPONG_MAX - PINGPONG_0];
uint32_t mixer_to_enc_id[LM_MAX - LM_0];
uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];
uint32_t intf_to_enc_id[INTF_MAX - INTF_0];
uint32_t lm_max_width;
struct mutex rm_lock;
};