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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c')
-rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c new file mode 100644 index 0000000000..1305e250b7 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c @@ -0,0 +1,358 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + */ + +#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__ + +#include <linux/debugfs.h> +#include <linux/delay.h> + +#include "dpu_vbif.h" +#include "dpu_hw_vbif.h" +#include "dpu_trace.h" + +static struct dpu_hw_vbif *dpu_get_vbif(struct dpu_kms *dpu_kms, enum dpu_vbif vbif_idx) +{ + if (vbif_idx < ARRAY_SIZE(dpu_kms->hw_vbif)) + return dpu_kms->hw_vbif[vbif_idx]; + + return NULL; +} + +static const char *dpu_vbif_name(enum dpu_vbif idx) +{ + switch (idx) { + case VBIF_RT: + return "VBIF_RT"; + case VBIF_NRT: + return "VBIF_NRT"; + default: + return "??"; + } +} + +/** + * _dpu_vbif_wait_for_xin_halt - wait for the xin to halt + * @vbif: Pointer to hardware vbif driver + * @xin_id: Client interface identifier + * @return: 0 if success; error code otherwise + */ +static int _dpu_vbif_wait_for_xin_halt(struct dpu_hw_vbif *vbif, u32 xin_id) +{ + ktime_t timeout; + bool status; + int rc; + + if (!vbif || !vbif->cap || !vbif->ops.get_halt_ctrl) { + DPU_ERROR("invalid arguments vbif %d\n", vbif != NULL); + return -EINVAL; + } + + timeout = ktime_add_us(ktime_get(), vbif->cap->xin_halt_timeout); + for (;;) { + status = vbif->ops.get_halt_ctrl(vbif, xin_id); + if (status) + break; + if (ktime_compare_safe(ktime_get(), timeout) > 0) { + status = vbif->ops.get_halt_ctrl(vbif, xin_id); + break; + } + usleep_range(501, 1000); + } + + if (!status) { + rc = -ETIMEDOUT; + DPU_ERROR("%s client %d not halting. TIMEDOUT.\n", + dpu_vbif_name(vbif->idx), xin_id); + } else { + rc = 0; + DRM_DEBUG_ATOMIC("%s client %d is halted\n", + dpu_vbif_name(vbif->idx), xin_id); + } + + return rc; +} + +/** + * _dpu_vbif_apply_dynamic_ot_limit - determine OT based on usecase parameters + * @vbif: Pointer to hardware vbif driver + * @ot_lim: Pointer to OT limit to be modified + * @params: Pointer to usecase parameters + */ +static void _dpu_vbif_apply_dynamic_ot_limit(struct dpu_hw_vbif *vbif, + u32 *ot_lim, struct dpu_vbif_set_ot_params *params) +{ + u64 pps; + const struct dpu_vbif_dynamic_ot_tbl *tbl; + u32 i; + + if (!vbif || !(vbif->cap->features & BIT(DPU_VBIF_QOS_OTLIM))) + return; + + /* Dynamic OT setting done only for WFD */ + if (!params->is_wfd) + return; + + pps = params->frame_rate; + pps *= params->width; + pps *= params->height; + + tbl = params->rd ? &vbif->cap->dynamic_ot_rd_tbl : + &vbif->cap->dynamic_ot_wr_tbl; + + for (i = 0; i < tbl->count; i++) { + if (pps <= tbl->cfg[i].pps) { + *ot_lim = tbl->cfg[i].ot_limit; + break; + } + } + + DRM_DEBUG_ATOMIC("%s xin:%d w:%d h:%d fps:%d pps:%llu ot:%u\n", + dpu_vbif_name(vbif->idx), params->xin_id, + params->width, params->height, params->frame_rate, + pps, *ot_lim); +} + +/** + * _dpu_vbif_get_ot_limit - get OT based on usecase & configuration parameters + * @vbif: Pointer to hardware vbif driver + * @params: Pointer to usecase parameters + * @return: OT limit + */ +static u32 _dpu_vbif_get_ot_limit(struct dpu_hw_vbif *vbif, + struct dpu_vbif_set_ot_params *params) +{ + u32 ot_lim = 0; + u32 val; + + if (!vbif || !vbif->cap) { + DPU_ERROR("invalid arguments vbif %d\n", vbif != NULL); + return -EINVAL; + } + + if (vbif->cap->default_ot_wr_limit && !params->rd) + ot_lim = vbif->cap->default_ot_wr_limit; + else if (vbif->cap->default_ot_rd_limit && params->rd) + ot_lim = vbif->cap->default_ot_rd_limit; + + /* + * If default ot is not set from dt/catalog, + * then do not configure it. + */ + if (ot_lim == 0) + goto exit; + + /* Modify the limits if the target and the use case requires it */ + _dpu_vbif_apply_dynamic_ot_limit(vbif, &ot_lim, params); + + if (vbif && vbif->ops.get_limit_conf) { + val = vbif->ops.get_limit_conf(vbif, + params->xin_id, params->rd); + if (val == ot_lim) + ot_lim = 0; + } + +exit: + DRM_DEBUG_ATOMIC("%s xin:%d ot_lim:%d\n", + dpu_vbif_name(vbif->idx), params->xin_id, ot_lim); + return ot_lim; +} + +/** + * dpu_vbif_set_ot_limit - set OT based on usecase & configuration parameters + * @dpu_kms: DPU handler + * @params: Pointer to usecase parameters + * + * Note this function would block waiting for bus halt. + */ +void dpu_vbif_set_ot_limit(struct dpu_kms *dpu_kms, + struct dpu_vbif_set_ot_params *params) +{ + struct dpu_hw_vbif *vbif; + struct dpu_hw_mdp *mdp; + bool forced_on = false; + u32 ot_lim; + int ret; + + mdp = dpu_kms->hw_mdp; + + vbif = dpu_get_vbif(dpu_kms, params->vbif_idx); + if (!vbif || !mdp) { + DRM_DEBUG_ATOMIC("invalid arguments vbif %d mdp %d\n", + vbif != NULL, mdp != NULL); + return; + } + + if (!mdp->ops.setup_clk_force_ctrl || + !vbif->ops.set_limit_conf || + !vbif->ops.set_halt_ctrl) + return; + + /* set write_gather_en for all write clients */ + if (vbif->ops.set_write_gather_en && !params->rd) + vbif->ops.set_write_gather_en(vbif, params->xin_id); + + ot_lim = _dpu_vbif_get_ot_limit(vbif, params) & 0xFF; + + if (ot_lim == 0) + return; + + trace_dpu_perf_set_ot(params->num, params->xin_id, ot_lim, + params->vbif_idx); + + forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, true); + + vbif->ops.set_limit_conf(vbif, params->xin_id, params->rd, ot_lim); + + vbif->ops.set_halt_ctrl(vbif, params->xin_id, true); + + ret = _dpu_vbif_wait_for_xin_halt(vbif, params->xin_id); + if (ret) + trace_dpu_vbif_wait_xin_halt_fail(vbif->idx, params->xin_id); + + vbif->ops.set_halt_ctrl(vbif, params->xin_id, false); + + if (forced_on) + mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, false); +} + +void dpu_vbif_set_qos_remap(struct dpu_kms *dpu_kms, + struct dpu_vbif_set_qos_params *params) +{ + struct dpu_hw_vbif *vbif; + struct dpu_hw_mdp *mdp; + bool forced_on = false; + const struct dpu_vbif_qos_tbl *qos_tbl; + int i; + + if (!params || !dpu_kms->hw_mdp) { + DPU_ERROR("invalid arguments\n"); + return; + } + mdp = dpu_kms->hw_mdp; + + vbif = dpu_get_vbif(dpu_kms, params->vbif_idx); + + if (!vbif || !vbif->cap) { + DPU_ERROR("invalid vbif %d\n", params->vbif_idx); + return; + } + + if (!vbif->ops.set_qos_remap || !mdp->ops.setup_clk_force_ctrl) { + DRM_DEBUG_ATOMIC("qos remap not supported\n"); + return; + } + + qos_tbl = params->is_rt ? &vbif->cap->qos_rt_tbl : + &vbif->cap->qos_nrt_tbl; + + if (!qos_tbl->npriority_lvl || !qos_tbl->priority_lvl) { + DRM_DEBUG_ATOMIC("qos tbl not defined\n"); + return; + } + + forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, true); + + for (i = 0; i < qos_tbl->npriority_lvl; i++) { + DRM_DEBUG_ATOMIC("%s xin:%d lvl:%d/%d\n", + dpu_vbif_name(params->vbif_idx), params->xin_id, i, + qos_tbl->priority_lvl[i]); + vbif->ops.set_qos_remap(vbif, params->xin_id, i, + qos_tbl->priority_lvl[i]); + } + + if (forced_on) + mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, false); +} + +void dpu_vbif_clear_errors(struct dpu_kms *dpu_kms) +{ + struct dpu_hw_vbif *vbif; + u32 i, pnd, src; + + for (i = 0; i < ARRAY_SIZE(dpu_kms->hw_vbif); i++) { + vbif = dpu_kms->hw_vbif[i]; + if (vbif && vbif->ops.clear_errors) { + vbif->ops.clear_errors(vbif, &pnd, &src); + if (pnd || src) { + DRM_DEBUG_KMS("%s: pnd 0x%X, src 0x%X\n", + dpu_vbif_name(vbif->idx), pnd, src); + } + } + } +} + +void dpu_vbif_init_memtypes(struct dpu_kms *dpu_kms) +{ + struct dpu_hw_vbif *vbif; + int i, j; + + for (i = 0; i < ARRAY_SIZE(dpu_kms->hw_vbif); i++) { + vbif = dpu_kms->hw_vbif[i]; + if (vbif && vbif->cap && vbif->ops.set_mem_type) { + for (j = 0; j < vbif->cap->memtype_count; j++) + vbif->ops.set_mem_type( + vbif, j, vbif->cap->memtype[j]); + } + } +} + +#ifdef CONFIG_DEBUG_FS + +void dpu_debugfs_vbif_init(struct dpu_kms *dpu_kms, struct dentry *debugfs_root) +{ + char vbif_name[32]; + struct dentry *entry, *debugfs_vbif; + int i, j; + + entry = debugfs_create_dir("vbif", debugfs_root); + + for (i = 0; i < dpu_kms->catalog->vbif_count; i++) { + const struct dpu_vbif_cfg *vbif = &dpu_kms->catalog->vbif[i]; + + snprintf(vbif_name, sizeof(vbif_name), "%d", vbif->id); + + debugfs_vbif = debugfs_create_dir(vbif_name, entry); + + debugfs_create_u32("features", 0600, debugfs_vbif, + (u32 *)&vbif->features); + + debugfs_create_u32("xin_halt_timeout", 0400, debugfs_vbif, + (u32 *)&vbif->xin_halt_timeout); + + debugfs_create_u32("default_rd_ot_limit", 0400, debugfs_vbif, + (u32 *)&vbif->default_ot_rd_limit); + + debugfs_create_u32("default_wr_ot_limit", 0400, debugfs_vbif, + (u32 *)&vbif->default_ot_wr_limit); + + for (j = 0; j < vbif->dynamic_ot_rd_tbl.count; j++) { + const struct dpu_vbif_dynamic_ot_cfg *cfg = + &vbif->dynamic_ot_rd_tbl.cfg[j]; + + snprintf(vbif_name, sizeof(vbif_name), + "dynamic_ot_rd_%d_pps", j); + debugfs_create_u64(vbif_name, 0400, debugfs_vbif, + (u64 *)&cfg->pps); + snprintf(vbif_name, sizeof(vbif_name), + "dynamic_ot_rd_%d_ot_limit", j); + debugfs_create_u32(vbif_name, 0400, debugfs_vbif, + (u32 *)&cfg->ot_limit); + } + + for (j = 0; j < vbif->dynamic_ot_wr_tbl.count; j++) { + const struct dpu_vbif_dynamic_ot_cfg *cfg = + &vbif->dynamic_ot_wr_tbl.cfg[j]; + + snprintf(vbif_name, sizeof(vbif_name), + "dynamic_ot_wr_%d_pps", j); + debugfs_create_u64(vbif_name, 0400, debugfs_vbif, + (u64 *)&cfg->pps); + snprintf(vbif_name, sizeof(vbif_name), + "dynamic_ot_wr_%d_ot_limit", j); + debugfs_create_u32(vbif_name, 0400, debugfs_vbif, + (u32 *)&cfg->ot_limit); + } + } +} +#endif |