1 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
13 #define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
15 #include <linux/debugfs.h>
18 #include "dpu_hw_vbif.h"
19 #include "dpu_trace.h"
21 static struct dpu_hw_vbif *dpu_get_vbif(struct dpu_kms *dpu_kms, enum dpu_vbif vbif_idx)
23 if (vbif_idx < ARRAY_SIZE(dpu_kms->hw_vbif))
24 return dpu_kms->hw_vbif[vbif_idx];
30 * _dpu_vbif_wait_for_xin_halt - wait for the xin to halt
31 * @vbif: Pointer to hardware vbif driver
32 * @xin_id: Client interface identifier
33 * @return: 0 if success; error code otherwise
35 static int _dpu_vbif_wait_for_xin_halt(struct dpu_hw_vbif *vbif, u32 xin_id)
41 if (!vbif || !vbif->cap || !vbif->ops.get_halt_ctrl) {
42 DPU_ERROR("invalid arguments vbif %d\n", vbif != 0);
46 timeout = ktime_add_us(ktime_get(), vbif->cap->xin_halt_timeout);
48 status = vbif->ops.get_halt_ctrl(vbif, xin_id);
51 if (ktime_compare_safe(ktime_get(), timeout) > 0) {
52 status = vbif->ops.get_halt_ctrl(vbif, xin_id);
55 usleep_range(501, 1000);
60 DPU_ERROR("VBIF %d client %d not halting. TIMEDOUT.\n",
61 vbif->idx - VBIF_0, xin_id);
64 DPU_DEBUG("VBIF %d client %d is halted\n",
65 vbif->idx - VBIF_0, xin_id);
72 * _dpu_vbif_apply_dynamic_ot_limit - determine OT based on usecase parameters
73 * @vbif: Pointer to hardware vbif driver
74 * @ot_lim: Pointer to OT limit to be modified
75 * @params: Pointer to usecase parameters
77 static void _dpu_vbif_apply_dynamic_ot_limit(struct dpu_hw_vbif *vbif,
78 u32 *ot_lim, struct dpu_vbif_set_ot_params *params)
81 const struct dpu_vbif_dynamic_ot_tbl *tbl;
84 if (!vbif || !(vbif->cap->features & BIT(DPU_VBIF_QOS_OTLIM)))
87 /* Dynamic OT setting done only for WFD */
91 pps = params->frame_rate;
93 pps *= params->height;
95 tbl = params->rd ? &vbif->cap->dynamic_ot_rd_tbl :
96 &vbif->cap->dynamic_ot_wr_tbl;
98 for (i = 0; i < tbl->count; i++) {
99 if (pps <= tbl->cfg[i].pps) {
100 *ot_lim = tbl->cfg[i].ot_limit;
105 DPU_DEBUG("vbif:%d xin:%d w:%d h:%d fps:%d pps:%llu ot:%u\n",
106 vbif->idx - VBIF_0, params->xin_id,
107 params->width, params->height, params->frame_rate,
112 * _dpu_vbif_get_ot_limit - get OT based on usecase & configuration parameters
113 * @vbif: Pointer to hardware vbif driver
114 * @params: Pointer to usecase parameters
117 static u32 _dpu_vbif_get_ot_limit(struct dpu_hw_vbif *vbif,
118 struct dpu_vbif_set_ot_params *params)
123 if (!vbif || !vbif->cap) {
124 DPU_ERROR("invalid arguments vbif %d\n", vbif != 0);
128 if (vbif->cap->default_ot_wr_limit && !params->rd)
129 ot_lim = vbif->cap->default_ot_wr_limit;
130 else if (vbif->cap->default_ot_rd_limit && params->rd)
131 ot_lim = vbif->cap->default_ot_rd_limit;
134 * If default ot is not set from dt/catalog,
135 * then do not configure it.
140 /* Modify the limits if the target and the use case requires it */
141 _dpu_vbif_apply_dynamic_ot_limit(vbif, &ot_lim, params);
143 if (vbif && vbif->ops.get_limit_conf) {
144 val = vbif->ops.get_limit_conf(vbif,
145 params->xin_id, params->rd);
151 DPU_DEBUG("vbif:%d xin:%d ot_lim:%d\n",
152 vbif->idx - VBIF_0, params->xin_id, ot_lim);
157 * dpu_vbif_set_ot_limit - set OT based on usecase & configuration parameters
158 * @vbif: Pointer to hardware vbif driver
159 * @params: Pointer to usecase parameters
161 * Note this function would block waiting for bus halt.
163 void dpu_vbif_set_ot_limit(struct dpu_kms *dpu_kms,
164 struct dpu_vbif_set_ot_params *params)
166 struct dpu_hw_vbif *vbif;
167 struct dpu_hw_mdp *mdp;
168 bool forced_on = false;
173 DPU_ERROR("invalid arguments\n");
176 mdp = dpu_kms->hw_mdp;
178 vbif = dpu_get_vbif(dpu_kms, params->vbif_idx);
180 DPU_DEBUG("invalid arguments vbif %d mdp %d\n",
181 vbif != 0, mdp != 0);
185 if (!mdp->ops.setup_clk_force_ctrl ||
186 !vbif->ops.set_limit_conf ||
187 !vbif->ops.set_halt_ctrl)
190 /* set write_gather_en for all write clients */
191 if (vbif->ops.set_write_gather_en && !params->rd)
192 vbif->ops.set_write_gather_en(vbif, params->xin_id);
194 ot_lim = _dpu_vbif_get_ot_limit(vbif, params) & 0xFF;
199 trace_dpu_perf_set_ot(params->num, params->xin_id, ot_lim,
202 forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, true);
204 vbif->ops.set_limit_conf(vbif, params->xin_id, params->rd, ot_lim);
206 vbif->ops.set_halt_ctrl(vbif, params->xin_id, true);
208 ret = _dpu_vbif_wait_for_xin_halt(vbif, params->xin_id);
210 trace_dpu_vbif_wait_xin_halt_fail(vbif->idx, params->xin_id);
212 vbif->ops.set_halt_ctrl(vbif, params->xin_id, false);
215 mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, false);
220 void dpu_vbif_set_qos_remap(struct dpu_kms *dpu_kms,
221 struct dpu_vbif_set_qos_params *params)
223 struct dpu_hw_vbif *vbif;
224 struct dpu_hw_mdp *mdp;
225 bool forced_on = false;
226 const struct dpu_vbif_qos_tbl *qos_tbl;
229 if (!dpu_kms || !params || !dpu_kms->hw_mdp) {
230 DPU_ERROR("invalid arguments\n");
233 mdp = dpu_kms->hw_mdp;
235 vbif = dpu_get_vbif(dpu_kms, params->vbif_idx);
237 if (!vbif || !vbif->cap) {
238 DPU_ERROR("invalid vbif %d\n", params->vbif_idx);
242 if (!vbif->ops.set_qos_remap || !mdp->ops.setup_clk_force_ctrl) {
243 DPU_DEBUG("qos remap not supported\n");
247 qos_tbl = params->is_rt ? &vbif->cap->qos_rt_tbl :
248 &vbif->cap->qos_nrt_tbl;
250 if (!qos_tbl->npriority_lvl || !qos_tbl->priority_lvl) {
251 DPU_DEBUG("qos tbl not defined\n");
255 forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, true);
257 for (i = 0; i < qos_tbl->npriority_lvl; i++) {
258 DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
259 params->vbif_idx, params->xin_id, i,
260 qos_tbl->priority_lvl[i]);
261 vbif->ops.set_qos_remap(vbif, params->xin_id, i,
262 qos_tbl->priority_lvl[i]);
266 mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, false);
269 void dpu_vbif_clear_errors(struct dpu_kms *dpu_kms)
271 struct dpu_hw_vbif *vbif;
275 DPU_ERROR("invalid argument\n");
279 for (i = 0; i < ARRAY_SIZE(dpu_kms->hw_vbif); i++) {
280 vbif = dpu_kms->hw_vbif[i];
281 if (vbif && vbif->ops.clear_errors) {
282 vbif->ops.clear_errors(vbif, &pnd, &src);
284 DRM_DEBUG_KMS("VBIF %d: pnd 0x%X, src 0x%X\n",
285 vbif->idx - VBIF_0, pnd, src);
291 void dpu_vbif_init_memtypes(struct dpu_kms *dpu_kms)
293 struct dpu_hw_vbif *vbif;
297 DPU_ERROR("invalid argument\n");
301 for (i = 0; i < ARRAY_SIZE(dpu_kms->hw_vbif); i++) {
302 vbif = dpu_kms->hw_vbif[i];
303 if (vbif && vbif->cap && vbif->ops.set_mem_type) {
304 for (j = 0; j < vbif->cap->memtype_count; j++)
305 vbif->ops.set_mem_type(
306 vbif, j, vbif->cap->memtype[j]);
311 #ifdef CONFIG_DEBUG_FS
312 void dpu_debugfs_vbif_destroy(struct dpu_kms *dpu_kms)
314 debugfs_remove_recursive(dpu_kms->debugfs_vbif);
315 dpu_kms->debugfs_vbif = NULL;
318 int dpu_debugfs_vbif_init(struct dpu_kms *dpu_kms, struct dentry *debugfs_root)
321 struct dentry *debugfs_vbif;
324 dpu_kms->debugfs_vbif = debugfs_create_dir("vbif", debugfs_root);
325 if (!dpu_kms->debugfs_vbif) {
326 DPU_ERROR("failed to create vbif debugfs\n");
330 for (i = 0; i < dpu_kms->catalog->vbif_count; i++) {
331 struct dpu_vbif_cfg *vbif = &dpu_kms->catalog->vbif[i];
333 snprintf(vbif_name, sizeof(vbif_name), "%d", vbif->id);
335 debugfs_vbif = debugfs_create_dir(vbif_name,
336 dpu_kms->debugfs_vbif);
338 debugfs_create_u32("features", 0600, debugfs_vbif,
339 (u32 *)&vbif->features);
341 debugfs_create_u32("xin_halt_timeout", 0400, debugfs_vbif,
342 (u32 *)&vbif->xin_halt_timeout);
344 debugfs_create_u32("default_rd_ot_limit", 0400, debugfs_vbif,
345 (u32 *)&vbif->default_ot_rd_limit);
347 debugfs_create_u32("default_wr_ot_limit", 0400, debugfs_vbif,
348 (u32 *)&vbif->default_ot_wr_limit);
350 for (j = 0; j < vbif->dynamic_ot_rd_tbl.count; j++) {
351 struct dpu_vbif_dynamic_ot_cfg *cfg =
352 &vbif->dynamic_ot_rd_tbl.cfg[j];
354 snprintf(vbif_name, sizeof(vbif_name),
355 "dynamic_ot_rd_%d_pps", j);
356 debugfs_create_u64(vbif_name, 0400, debugfs_vbif,
358 snprintf(vbif_name, sizeof(vbif_name),
359 "dynamic_ot_rd_%d_ot_limit", j);
360 debugfs_create_u32(vbif_name, 0400, debugfs_vbif,
361 (u32 *)&cfg->ot_limit);
364 for (j = 0; j < vbif->dynamic_ot_wr_tbl.count; j++) {
365 struct dpu_vbif_dynamic_ot_cfg *cfg =
366 &vbif->dynamic_ot_wr_tbl.cfg[j];
368 snprintf(vbif_name, sizeof(vbif_name),
369 "dynamic_ot_wr_%d_pps", j);
370 debugfs_create_u64(vbif_name, 0400, debugfs_vbif,
372 snprintf(vbif_name, sizeof(vbif_name),
373 "dynamic_ot_wr_%d_ot_limit", j);
374 debugfs_create_u32(vbif_name, 0400, debugfs_vbif,
375 (u32 *)&cfg->ot_limit);