android_kernel_xiaomi_sm8350/msm/sde/sde_encoder_phys_cmd.c
Veera Sundaram Sankaran e167ae786c disp: msm: sde: fix handling the missing pp-done interrupt cases
With posted-start, ctl scheduler status and pending-kickoff
count are checked to address the missing pp-done interrupt
cases, which can occur if the IRQs are disabled for a long
time by some entity. Currently this check is done after
the wr-ptr-irq. At this point the scheduler status may
or may not be idle, based on the frame-transfer. Move this
handling after the timeout, so the scheduler is guaranteed
to be in idle state for working use-case.

Change-Id: I3fa9ecce8139ff667c1882e286571169c543c797
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
2019-10-15 11:31:19 -07:00

1913 lines
53 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
#include "sde_encoder_phys.h"
#include "sde_hw_interrupts.h"
#include "sde_core_irq.h"
#include "sde_formats.h"
#include "sde_trace.h"
#define SDE_DEBUG_CMDENC(e, fmt, ...) SDE_DEBUG("enc%d intf%d " fmt, \
(e) && (e)->base.parent ? \
(e)->base.parent->base.id : -1, \
(e) ? (e)->base.intf_idx - INTF_0 : -1, ##__VA_ARGS__)
#define SDE_ERROR_CMDENC(e, fmt, ...) SDE_ERROR("enc%d intf%d " fmt, \
(e) && (e)->base.parent ? \
(e)->base.parent->base.id : -1, \
(e) ? (e)->base.intf_idx - INTF_0 : -1, ##__VA_ARGS__)
#define to_sde_encoder_phys_cmd(x) \
container_of(x, struct sde_encoder_phys_cmd, base)
#define PP_TIMEOUT_MAX_TRIALS 4
/*
* Tearcheck sync start and continue thresholds are empirically found
* based on common panels In the future, may want to allow panels to override
* these default values
*/
#define DEFAULT_TEARCHECK_SYNC_THRESH_START 4
#define DEFAULT_TEARCHECK_SYNC_THRESH_CONTINUE 4
#define SDE_ENC_WR_PTR_START_TIMEOUT_US 20000
#define SDE_ENC_MAX_POLL_TIMEOUT_US 2000
static inline int _sde_encoder_phys_cmd_get_idle_timeout(
struct sde_encoder_phys_cmd *cmd_enc)
{
return cmd_enc->autorefresh.cfg.frame_count ?
cmd_enc->autorefresh.cfg.frame_count *
KICKOFF_TIMEOUT_MS : KICKOFF_TIMEOUT_MS;
}
static inline bool sde_encoder_phys_cmd_is_master(
struct sde_encoder_phys *phys_enc)
{
return (phys_enc->split_role != ENC_ROLE_SLAVE) ? true : false;
}
static bool sde_encoder_phys_cmd_mode_fixup(
struct sde_encoder_phys *phys_enc,
const struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
if (phys_enc)
SDE_DEBUG_CMDENC(to_sde_encoder_phys_cmd(phys_enc), "\n");
return true;
}
static uint64_t _sde_encoder_phys_cmd_get_autorefresh_property(
struct sde_encoder_phys *phys_enc)
{
struct drm_connector *conn = phys_enc->connector;
if (!conn || !conn->state)
return 0;
return sde_connector_get_property(conn->state,
CONNECTOR_PROP_AUTOREFRESH);
}
static void _sde_encoder_phys_cmd_config_autorefresh(
struct sde_encoder_phys *phys_enc,
u32 new_frame_count)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_hw_pingpong *hw_pp = phys_enc->hw_pp;
struct sde_hw_intf *hw_intf = phys_enc->hw_intf;
struct drm_connector *conn = phys_enc->connector;
struct sde_hw_autorefresh *cfg_cur, cfg_nxt;
if (!conn || !conn->state || !hw_pp || !hw_intf)
return;
cfg_cur = &cmd_enc->autorefresh.cfg;
/* autorefresh property value should be validated already */
memset(&cfg_nxt, 0, sizeof(cfg_nxt));
cfg_nxt.frame_count = new_frame_count;
cfg_nxt.enable = (cfg_nxt.frame_count != 0);
SDE_DEBUG_CMDENC(cmd_enc, "autorefresh state %d->%d framecount %d\n",
cfg_cur->enable, cfg_nxt.enable, cfg_nxt.frame_count);
SDE_EVT32(DRMID(phys_enc->parent), hw_pp->idx, hw_intf->idx,
cfg_cur->enable, cfg_nxt.enable, cfg_nxt.frame_count);
/* only proceed on state changes */
if (cfg_nxt.enable == cfg_cur->enable)
return;
memcpy(cfg_cur, &cfg_nxt, sizeof(*cfg_cur));
if (phys_enc->has_intf_te && hw_intf->ops.setup_autorefresh)
hw_intf->ops.setup_autorefresh(hw_intf, cfg_cur);
else if (hw_pp->ops.setup_autorefresh)
hw_pp->ops.setup_autorefresh(hw_pp, cfg_cur);
}
static void _sde_encoder_phys_cmd_update_flush_mask(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc;
struct sde_hw_ctl *ctl;
if (!phys_enc || !phys_enc->hw_intf || !phys_enc->hw_pp)
return;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
ctl = phys_enc->hw_ctl;
if (!ctl)
return;
if (!ctl->ops.update_bitmask_intf ||
(test_bit(SDE_CTL_ACTIVE_CFG, &ctl->caps->features) &&
!ctl->ops.update_bitmask_merge3d)) {
SDE_ERROR("invalid hw_ctl ops %d\n", ctl->idx);
return;
}
ctl->ops.update_bitmask_intf(ctl, phys_enc->intf_idx, 1);
if (ctl->ops.update_bitmask_merge3d && phys_enc->hw_pp->merge_3d)
ctl->ops.update_bitmask_merge3d(ctl,
phys_enc->hw_pp->merge_3d->idx, 1);
SDE_DEBUG_CMDENC(cmd_enc, "update pending flush ctl %d intf_idx %x\n",
ctl->idx - CTL_0, phys_enc->intf_idx);
}
static void _sde_encoder_phys_cmd_update_intf_cfg(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_hw_ctl *ctl;
if (!phys_enc)
return;
ctl = phys_enc->hw_ctl;
if (!ctl)
return;
if (ctl->ops.setup_intf_cfg) {
struct sde_hw_intf_cfg intf_cfg = { 0 };
intf_cfg.intf = phys_enc->intf_idx;
intf_cfg.intf_mode_sel = SDE_CTL_MODE_SEL_CMD;
intf_cfg.stream_sel = cmd_enc->stream_sel;
intf_cfg.mode_3d =
sde_encoder_helper_get_3d_blend_mode(phys_enc);
ctl->ops.setup_intf_cfg(ctl, &intf_cfg);
} else if (test_bit(SDE_CTL_ACTIVE_CFG, &ctl->caps->features)) {
sde_encoder_helper_update_intf_cfg(phys_enc);
}
}
static void sde_encoder_phys_cmd_pp_tx_done_irq(void *arg, int irq_idx)
{
struct sde_encoder_phys *phys_enc = arg;
u32 event = 0;
if (!phys_enc || !phys_enc->hw_pp)
return;
SDE_ATRACE_BEGIN("pp_done_irq");
/* notify all synchronous clients first, then asynchronous clients */
if (phys_enc->parent_ops.handle_frame_done &&
atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0)) {
event = SDE_ENCODER_FRAME_EVENT_DONE |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE;
spin_lock(phys_enc->enc_spinlock);
phys_enc->parent_ops.handle_frame_done(phys_enc->parent,
phys_enc, event);
spin_unlock(phys_enc->enc_spinlock);
}
SDE_EVT32_IRQ(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0, event);
/* Signal any waiting atomic commit thread */
wake_up_all(&phys_enc->pending_kickoff_wq);
SDE_ATRACE_END("pp_done_irq");
}
static void sde_encoder_phys_cmd_autorefresh_done_irq(void *arg, int irq_idx)
{
struct sde_encoder_phys *phys_enc = arg;
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
unsigned long lock_flags;
int new_cnt;
if (!cmd_enc)
return;
phys_enc = &cmd_enc->base;
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
new_cnt = atomic_add_unless(&cmd_enc->autorefresh.kickoff_cnt, -1, 0);
spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
SDE_EVT32_IRQ(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
new_cnt);
/* Signal any waiting atomic commit thread */
wake_up_all(&cmd_enc->autorefresh.kickoff_wq);
}
static void sde_encoder_phys_cmd_te_rd_ptr_irq(void *arg, int irq_idx)
{
struct sde_encoder_phys *phys_enc = arg;
struct sde_encoder_phys_cmd *cmd_enc;
u32 scheduler_status = INVALID_CTL_STATUS;
struct sde_hw_ctl *ctl;
struct sde_hw_pp_vsync_info info[MAX_CHANNELS_PER_ENC] = {{0}};
struct sde_encoder_phys_cmd_te_timestamp *te_timestamp;
unsigned long lock_flags;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf)
return;
SDE_ATRACE_BEGIN("rd_ptr_irq");
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
ctl = phys_enc->hw_ctl;
if (ctl && ctl->ops.get_scheduler_status)
scheduler_status = ctl->ops.get_scheduler_status(ctl);
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
te_timestamp = list_first_entry_or_null(&cmd_enc->te_timestamp_list,
struct sde_encoder_phys_cmd_te_timestamp, list);
if (te_timestamp) {
list_del_init(&te_timestamp->list);
te_timestamp->timestamp = ktime_get();
list_add_tail(&te_timestamp->list, &cmd_enc->te_timestamp_list);
}
spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
sde_encoder_helper_get_pp_line_count(phys_enc->parent, info);
SDE_EVT32_IRQ(DRMID(phys_enc->parent),
info[0].pp_idx, info[0].intf_idx,
info[0].wr_ptr_line_count, info[0].intf_frame_count,
info[1].pp_idx, info[1].intf_idx,
info[1].wr_ptr_line_count, info[1].intf_frame_count,
scheduler_status);
if (phys_enc->parent_ops.handle_vblank_virt)
phys_enc->parent_ops.handle_vblank_virt(phys_enc->parent,
phys_enc);
atomic_add_unless(&cmd_enc->pending_vblank_cnt, -1, 0);
wake_up_all(&cmd_enc->pending_vblank_wq);
SDE_ATRACE_END("rd_ptr_irq");
}
static void sde_encoder_phys_cmd_wr_ptr_irq(void *arg, int irq_idx)
{
struct sde_encoder_phys *phys_enc = arg;
struct sde_hw_ctl *ctl;
u32 event = 0;
struct sde_hw_pp_vsync_info info[MAX_CHANNELS_PER_ENC] = {{0}};
if (!phys_enc || !phys_enc->hw_ctl)
return;
SDE_ATRACE_BEGIN("wr_ptr_irq");
ctl = phys_enc->hw_ctl;
if (atomic_add_unless(&phys_enc->pending_retire_fence_cnt, -1, 0)) {
event = SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE;
if (phys_enc->parent_ops.handle_frame_done) {
spin_lock(phys_enc->enc_spinlock);
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc, event);
spin_unlock(phys_enc->enc_spinlock);
}
}
sde_encoder_helper_get_pp_line_count(phys_enc->parent, info);
SDE_EVT32_IRQ(DRMID(phys_enc->parent),
ctl->idx - CTL_0, event,
info[0].pp_idx, info[0].intf_idx, info[0].wr_ptr_line_count,
info[1].pp_idx, info[1].intf_idx, info[1].wr_ptr_line_count);
/* Signal any waiting wr_ptr start interrupt */
wake_up_all(&phys_enc->pending_kickoff_wq);
SDE_ATRACE_END("wr_ptr_irq");
}
static void sde_encoder_phys_cmd_underrun_irq(void *arg, int irq_idx)
{
struct sde_encoder_phys *phys_enc = arg;
if (!phys_enc)
return;
if (phys_enc->parent_ops.handle_underrun_virt)
phys_enc->parent_ops.handle_underrun_virt(phys_enc->parent,
phys_enc);
}
static void _sde_encoder_phys_cmd_setup_irq_hw_idx(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_irq *irq;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_ctl) {
SDE_ERROR("invalid args %d %d\n", !phys_enc,
phys_enc ? !phys_enc->hw_pp : 0);
return;
}
if (phys_enc->has_intf_te && !phys_enc->hw_intf) {
SDE_ERROR("invalid intf configuration\n");
return;
}
irq = &phys_enc->irq[INTR_IDX_CTL_START];
irq->hw_idx = phys_enc->hw_ctl->idx;
irq->irq_idx = -EINVAL;
irq = &phys_enc->irq[INTR_IDX_PINGPONG];
irq->hw_idx = phys_enc->hw_pp->idx;
irq->irq_idx = -EINVAL;
irq = &phys_enc->irq[INTR_IDX_RDPTR];
irq->irq_idx = -EINVAL;
if (phys_enc->has_intf_te)
irq->hw_idx = phys_enc->hw_intf->idx;
else
irq->hw_idx = phys_enc->hw_pp->idx;
irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
irq->hw_idx = phys_enc->intf_idx;
irq->irq_idx = -EINVAL;
irq = &phys_enc->irq[INTR_IDX_AUTOREFRESH_DONE];
irq->irq_idx = -EINVAL;
if (phys_enc->has_intf_te)
irq->hw_idx = phys_enc->hw_intf->idx;
else
irq->hw_idx = phys_enc->hw_pp->idx;
irq = &phys_enc->irq[INTR_IDX_WRPTR];
irq->irq_idx = -EINVAL;
if (phys_enc->has_intf_te)
irq->hw_idx = phys_enc->hw_intf->idx;
else
irq->hw_idx = phys_enc->hw_pp->idx;
}
static void sde_encoder_phys_cmd_cont_splash_mode_set(
struct sde_encoder_phys *phys_enc,
struct drm_display_mode *adj_mode)
{
struct sde_hw_intf *hw_intf;
struct sde_hw_pingpong *hw_pp;
struct sde_encoder_phys_cmd *cmd_enc;
if (!phys_enc || !adj_mode) {
SDE_ERROR("invalid args\n");
return;
}
phys_enc->cached_mode = *adj_mode;
phys_enc->enable_state = SDE_ENC_ENABLED;
if (!phys_enc->hw_ctl || !phys_enc->hw_pp) {
SDE_DEBUG("invalid ctl:%d pp:%d\n",
(phys_enc->hw_ctl == NULL),
(phys_enc->hw_pp == NULL));
return;
}
if (sde_encoder_phys_cmd_is_master(phys_enc)) {
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
hw_pp = phys_enc->hw_pp;
hw_intf = phys_enc->hw_intf;
if (phys_enc->has_intf_te && hw_intf &&
hw_intf->ops.get_autorefresh) {
hw_intf->ops.get_autorefresh(hw_intf,
&cmd_enc->autorefresh.cfg);
} else if (hw_pp && hw_pp->ops.get_autorefresh) {
hw_pp->ops.get_autorefresh(hw_pp,
&cmd_enc->autorefresh.cfg);
}
}
_sde_encoder_phys_cmd_setup_irq_hw_idx(phys_enc);
}
static void sde_encoder_phys_cmd_mode_set(
struct sde_encoder_phys *phys_enc,
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_rm *rm = &phys_enc->sde_kms->rm;
struct sde_rm_hw_iter iter;
int i, instance;
if (!phys_enc || !mode || !adj_mode) {
SDE_ERROR("invalid args\n");
return;
}
phys_enc->cached_mode = *adj_mode;
SDE_DEBUG_CMDENC(cmd_enc, "caching mode:\n");
drm_mode_debug_printmodeline(adj_mode);
instance = phys_enc->split_role == ENC_ROLE_SLAVE ? 1 : 0;
/* Retrieve previously allocated HW Resources. Shouldn't fail */
sde_rm_init_hw_iter(&iter, phys_enc->parent->base.id, SDE_HW_BLK_CTL);
for (i = 0; i <= instance; i++) {
if (sde_rm_get_hw(rm, &iter))
phys_enc->hw_ctl = (struct sde_hw_ctl *)iter.hw;
}
if (IS_ERR_OR_NULL(phys_enc->hw_ctl)) {
SDE_ERROR_CMDENC(cmd_enc, "failed to init ctl: %ld\n",
PTR_ERR(phys_enc->hw_ctl));
phys_enc->hw_ctl = NULL;
return;
}
sde_rm_init_hw_iter(&iter, phys_enc->parent->base.id, SDE_HW_BLK_INTF);
for (i = 0; i <= instance; i++) {
if (sde_rm_get_hw(rm, &iter))
phys_enc->hw_intf = (struct sde_hw_intf *)iter.hw;
}
if (IS_ERR_OR_NULL(phys_enc->hw_intf)) {
SDE_ERROR_CMDENC(cmd_enc, "failed to init intf: %ld\n",
PTR_ERR(phys_enc->hw_intf));
phys_enc->hw_intf = NULL;
return;
}
_sde_encoder_phys_cmd_setup_irq_hw_idx(phys_enc);
}
static int _sde_encoder_phys_cmd_handle_ppdone_timeout(
struct sde_encoder_phys *phys_enc,
bool recovery_events)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
u32 frame_event = SDE_ENCODER_FRAME_EVENT_ERROR
| SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE;
struct drm_connector *conn;
int event;
u32 pending_kickoff_cnt;
unsigned long lock_flags;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_ctl)
return -EINVAL;
conn = phys_enc->connector;
/* decrement the kickoff_cnt before checking for ESD status */
if (!atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0))
return 0;
cmd_enc->pp_timeout_report_cnt++;
pending_kickoff_cnt = atomic_read(&phys_enc->pending_kickoff_cnt) + 1;
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
cmd_enc->pp_timeout_report_cnt,
pending_kickoff_cnt,
frame_event);
/* check if panel is still sending TE signal or not */
if (sde_connector_esd_status(phys_enc->connector))
goto exit;
/* to avoid flooding, only log first time, and "dead" time */
if (cmd_enc->pp_timeout_report_cnt == 1) {
SDE_ERROR_CMDENC(cmd_enc,
"pp:%d kickoff timed out ctl %d koff_cnt %d\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_ctl->idx - CTL_0,
pending_kickoff_cnt);
SDE_EVT32(DRMID(phys_enc->parent), SDE_EVTLOG_FATAL);
sde_encoder_helper_unregister_irq(phys_enc, INTR_IDX_RDPTR);
if (sde_kms_is_secure_session_inprogress(phys_enc->sde_kms))
SDE_DBG_DUMP("secure", "all", "dbg_bus");
else
SDE_DBG_DUMP("all", "dbg_bus", "vbif_dbg_bus");
sde_encoder_helper_register_irq(phys_enc, INTR_IDX_RDPTR);
}
/*
* if the recovery event is registered by user, don't panic
* trigger panic on first timeout if no listener registered
*/
if (recovery_events) {
event = cmd_enc->pp_timeout_report_cnt > PP_TIMEOUT_MAX_TRIALS ?
SDE_RECOVERY_HARD_RESET : SDE_RECOVERY_CAPTURE;
sde_connector_event_notify(conn, DRM_EVENT_SDE_HW_RECOVERY,
sizeof(uint8_t), event);
} else if (cmd_enc->pp_timeout_report_cnt) {
SDE_DBG_DUMP("dsi_dbg_bus", "panic");
}
/* request a ctl reset before the next kickoff */
phys_enc->enable_state = SDE_ENC_ERR_NEEDS_HW_RESET;
exit:
if (phys_enc->parent_ops.handle_frame_done) {
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc, frame_event);
spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
}
return -ETIMEDOUT;
}
static bool _sde_encoder_phys_is_ppsplit_slave(
struct sde_encoder_phys *phys_enc)
{
if (!phys_enc)
return false;
return _sde_encoder_phys_is_ppsplit(phys_enc) &&
phys_enc->split_role == ENC_ROLE_SLAVE;
}
static bool _sde_encoder_phys_is_disabling_ppsplit_slave(
struct sde_encoder_phys *phys_enc)
{
enum sde_rm_topology_name old_top;
if (!phys_enc || !phys_enc->connector ||
phys_enc->split_role != ENC_ROLE_SLAVE)
return false;
old_top = sde_connector_get_old_topology_name(
phys_enc->connector->state);
return old_top == SDE_RM_TOPOLOGY_PPSPLIT;
}
static int _sde_encoder_phys_cmd_poll_write_pointer_started(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_hw_pingpong *hw_pp = phys_enc->hw_pp;
struct sde_hw_intf *hw_intf = phys_enc->hw_intf;
struct sde_hw_pp_vsync_info info;
u32 timeout_us = SDE_ENC_WR_PTR_START_TIMEOUT_US;
int ret = 0;
if (!hw_pp || !hw_intf)
return 0;
if (phys_enc->has_intf_te) {
if (!hw_intf->ops.get_vsync_info ||
!hw_intf->ops.poll_timeout_wr_ptr)
goto end;
} else {
if (!hw_pp->ops.get_vsync_info ||
!hw_pp->ops.poll_timeout_wr_ptr)
goto end;
}
if (phys_enc->has_intf_te)
ret = hw_intf->ops.get_vsync_info(hw_intf, &info);
else
ret = hw_pp->ops.get_vsync_info(hw_pp, &info);
if (ret)
return ret;
SDE_DEBUG_CMDENC(cmd_enc,
"pp:%d intf:%d rd_ptr %d wr_ptr %d\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
info.rd_ptr_line_count,
info.wr_ptr_line_count);
SDE_EVT32_VERBOSE(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
info.wr_ptr_line_count);
if (phys_enc->has_intf_te)
ret = hw_intf->ops.poll_timeout_wr_ptr(hw_intf, timeout_us);
else
ret = hw_pp->ops.poll_timeout_wr_ptr(hw_pp, timeout_us);
if (ret) {
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
timeout_us,
ret);
SDE_DBG_DUMP("all", "dbg_bus", "vbif_dbg_bus", "panic");
}
end:
return ret;
}
static bool _sde_encoder_phys_cmd_is_ongoing_pptx(
struct sde_encoder_phys *phys_enc)
{
struct sde_hw_pingpong *hw_pp;
struct sde_hw_pp_vsync_info info;
struct sde_hw_intf *hw_intf;
if (!phys_enc)
return false;
if (phys_enc->has_intf_te) {
hw_intf = phys_enc->hw_intf;
if (!hw_intf || !hw_intf->ops.get_vsync_info)
return false;
hw_intf->ops.get_vsync_info(hw_intf, &info);
} else {
hw_pp = phys_enc->hw_pp;
if (!hw_pp || !hw_pp->ops.get_vsync_info)
return false;
hw_pp->ops.get_vsync_info(hw_pp, &info);
}
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
atomic_read(&phys_enc->pending_kickoff_cnt),
info.wr_ptr_line_count,
phys_enc->cached_mode.vdisplay);
if (info.wr_ptr_line_count > 0 && info.wr_ptr_line_count <
phys_enc->cached_mode.vdisplay)
return true;
return false;
}
static bool _sde_encoder_phys_cmd_is_scheduler_idle(
struct sde_encoder_phys *phys_enc)
{
bool wr_ptr_wait_success = true;
unsigned long lock_flags;
bool ret = false;
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_hw_ctl *ctl = phys_enc->hw_ctl;
if (sde_encoder_phys_cmd_is_master(phys_enc))
wr_ptr_wait_success = cmd_enc->wr_ptr_wait_success;
/*
* Handle cases where a pp-done interrupt is missed
* due to irq latency with POSTED start
*/
if (wr_ptr_wait_success &&
(phys_enc->frame_trigger_mode == FRAME_DONE_WAIT_POSTED_START) &&
ctl->ops.get_scheduler_status &&
(ctl->ops.get_scheduler_status(ctl) & BIT(0)) &&
atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0) &&
phys_enc->parent_ops.handle_frame_done) {
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_DONE |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE);
spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
atomic_read(&phys_enc->pending_kickoff_cnt));
ret = true;
}
return ret;
}
static int _sde_encoder_phys_cmd_wait_for_idle(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_encoder_wait_info wait_info = {0};
bool recovery_events;
int ret;
if (!phys_enc) {
SDE_ERROR("invalid encoder\n");
return -EINVAL;
}
if (atomic_read(&phys_enc->pending_kickoff_cnt) > 1)
wait_info.count_check = 1;
wait_info.wq = &phys_enc->pending_kickoff_wq;
wait_info.atomic_cnt = &phys_enc->pending_kickoff_cnt;
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
recovery_events = sde_encoder_recovery_events_enabled(
phys_enc->parent);
/* slave encoder doesn't enable for ppsplit */
if (_sde_encoder_phys_is_ppsplit_slave(phys_enc))
return 0;
if (_sde_encoder_phys_cmd_is_scheduler_idle(phys_enc))
return 0;
ret = sde_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_PINGPONG,
&wait_info);
if (ret == -ETIMEDOUT) {
if (_sde_encoder_phys_cmd_is_scheduler_idle(phys_enc))
return 0;
_sde_encoder_phys_cmd_handle_ppdone_timeout(phys_enc,
recovery_events);
} else if (!ret) {
if (cmd_enc->pp_timeout_report_cnt && recovery_events) {
struct drm_connector *conn = phys_enc->connector;
sde_connector_event_notify(conn,
DRM_EVENT_SDE_HW_RECOVERY,
sizeof(uint8_t),
SDE_RECOVERY_SUCCESS);
}
cmd_enc->pp_timeout_report_cnt = 0;
}
return ret;
}
static int _sde_encoder_phys_cmd_wait_for_autorefresh_done(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_encoder_wait_info wait_info = {0};
int ret = 0;
if (!phys_enc) {
SDE_ERROR("invalid encoder\n");
return -EINVAL;
}
/* only master deals with autorefresh */
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return 0;
wait_info.wq = &cmd_enc->autorefresh.kickoff_wq;
wait_info.atomic_cnt = &cmd_enc->autorefresh.kickoff_cnt;
wait_info.timeout_ms = _sde_encoder_phys_cmd_get_idle_timeout(cmd_enc);
/* wait for autorefresh kickoff to start */
ret = sde_encoder_helper_wait_for_irq(phys_enc,
INTR_IDX_AUTOREFRESH_DONE, &wait_info);
/* double check that kickoff has started by reading write ptr reg */
if (!ret)
ret = _sde_encoder_phys_cmd_poll_write_pointer_started(
phys_enc);
else
sde_encoder_helper_report_irq_timeout(phys_enc,
INTR_IDX_AUTOREFRESH_DONE);
return ret;
}
static int sde_encoder_phys_cmd_control_vblank_irq(
struct sde_encoder_phys *phys_enc,
bool enable)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
int ret = 0;
int refcount;
if (!phys_enc || !phys_enc->hw_pp) {
SDE_ERROR("invalid encoder\n");
return -EINVAL;
}
mutex_lock(phys_enc->vblank_ctl_lock);
refcount = atomic_read(&phys_enc->vblank_refcount);
/* Slave encoders don't report vblank */
if (!sde_encoder_phys_cmd_is_master(phys_enc))
goto end;
/* protect against negative */
if (!enable && refcount == 0) {
ret = -EINVAL;
goto end;
}
SDE_DEBUG_CMDENC(cmd_enc, "[%pS] enable=%d/%d\n",
__builtin_return_address(0), enable, refcount);
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
enable, refcount);
if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1)
ret = sde_encoder_helper_register_irq(phys_enc, INTR_IDX_RDPTR);
else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0)
ret = sde_encoder_helper_unregister_irq(phys_enc,
INTR_IDX_RDPTR);
end:
if (ret) {
SDE_ERROR_CMDENC(cmd_enc,
"control vblank irq error %d, enable %d, refcount %d\n",
ret, enable, refcount);
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
enable, refcount, SDE_EVTLOG_ERROR);
}
mutex_unlock(phys_enc->vblank_ctl_lock);
return ret;
}
void sde_encoder_phys_cmd_irq_control(struct sde_encoder_phys *phys_enc,
bool enable)
{
struct sde_encoder_phys_cmd *cmd_enc;
if (!phys_enc)
return;
/**
* pingpong split slaves do not register for IRQs
* check old and new topologies
*/
if (_sde_encoder_phys_is_ppsplit_slave(phys_enc) ||
_sde_encoder_phys_is_disabling_ppsplit_slave(phys_enc))
return;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
enable, atomic_read(&phys_enc->vblank_refcount));
if (enable) {
sde_encoder_helper_register_irq(phys_enc, INTR_IDX_PINGPONG);
sde_encoder_phys_cmd_control_vblank_irq(phys_enc, true);
if (sde_encoder_phys_cmd_is_master(phys_enc)) {
sde_encoder_helper_register_irq(phys_enc,
INTR_IDX_WRPTR);
sde_encoder_helper_register_irq(phys_enc,
INTR_IDX_AUTOREFRESH_DONE);
}
} else {
if (sde_encoder_phys_cmd_is_master(phys_enc)) {
sde_encoder_helper_unregister_irq(phys_enc,
INTR_IDX_WRPTR);
sde_encoder_helper_unregister_irq(phys_enc,
INTR_IDX_AUTOREFRESH_DONE);
}
sde_encoder_phys_cmd_control_vblank_irq(phys_enc, false);
sde_encoder_helper_unregister_irq(phys_enc, INTR_IDX_PINGPONG);
}
}
static int _get_tearcheck_threshold(struct sde_encoder_phys *phys_enc,
u32 *extra_frame_trigger_time)
{
struct drm_connector *conn = phys_enc->connector;
u32 qsync_mode;
struct drm_display_mode *mode;
u32 threshold_lines = 0;
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
*extra_frame_trigger_time = 0;
if (!conn || !conn->state)
return 0;
mode = &phys_enc->cached_mode;
qsync_mode = sde_connector_get_qsync_mode(conn);
if (mode && (qsync_mode == SDE_RM_QSYNC_CONTINUOUS_MODE)) {
u32 qsync_min_fps = 0;
u32 default_fps = mode->vrefresh;
u32 yres = mode->vtotal;
u32 slow_time_ns;
u32 default_time_ns;
u32 extra_time_ns;
u32 total_extra_lines;
u32 default_line_time_ns;
if (phys_enc->parent_ops.get_qsync_fps)
phys_enc->parent_ops.get_qsync_fps(
phys_enc->parent, &qsync_min_fps);
if (!qsync_min_fps || !default_fps || !yres) {
SDE_ERROR_CMDENC(cmd_enc,
"wrong qsync params %d %d %d\n",
qsync_min_fps, default_fps, yres);
goto exit;
}
if (qsync_min_fps >= default_fps) {
SDE_ERROR_CMDENC(cmd_enc,
"qsync fps:%d must be less than default:%d\n",
qsync_min_fps, default_fps);
goto exit;
}
/* Calculate the number of extra lines*/
slow_time_ns = (1 * 1000000000) / qsync_min_fps;
default_time_ns = (1 * 1000000000) / default_fps;
extra_time_ns = slow_time_ns - default_time_ns;
default_line_time_ns = (1 * 1000000000) / (default_fps * yres);
total_extra_lines = extra_time_ns / default_line_time_ns;
threshold_lines += total_extra_lines;
SDE_DEBUG_CMDENC(cmd_enc, "slow:%d default:%d extra:%d(ns)\n",
slow_time_ns, default_time_ns, extra_time_ns);
SDE_DEBUG_CMDENC(cmd_enc, "extra_lines:%d threshold:%d\n",
total_extra_lines, threshold_lines);
SDE_DEBUG_CMDENC(cmd_enc, "min_fps:%d fps:%d yres:%d\n",
qsync_min_fps, default_fps, yres);
SDE_EVT32(qsync_mode, qsync_min_fps, extra_time_ns, default_fps,
yres, threshold_lines);
*extra_frame_trigger_time = extra_time_ns;
}
exit:
threshold_lines += DEFAULT_TEARCHECK_SYNC_THRESH_START;
return threshold_lines;
}
static void sde_encoder_phys_cmd_tearcheck_config(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
struct sde_hw_tear_check tc_cfg = { 0 };
struct drm_display_mode *mode;
bool tc_enable = true;
u32 vsync_hz, extra_frame_trigger_time;
struct msm_drm_private *priv;
struct sde_kms *sde_kms;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf) {
SDE_ERROR("invalid encoder\n");
return;
}
mode = &phys_enc->cached_mode;
SDE_DEBUG_CMDENC(cmd_enc, "pp %d, intf %d\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0);
if (phys_enc->has_intf_te) {
if (!phys_enc->hw_intf->ops.setup_tearcheck ||
!phys_enc->hw_intf->ops.enable_tearcheck) {
SDE_DEBUG_CMDENC(cmd_enc, "tearcheck not supported\n");
return;
}
} else {
if (!phys_enc->hw_pp->ops.setup_tearcheck ||
!phys_enc->hw_pp->ops.enable_tearcheck) {
SDE_DEBUG_CMDENC(cmd_enc, "tearcheck not supported\n");
return;
}
}
sde_kms = phys_enc->sde_kms;
if (!sde_kms || !sde_kms->dev || !sde_kms->dev->dev_private) {
SDE_ERROR("invalid device\n");
return;
}
priv = sde_kms->dev->dev_private;
/*
* TE default: dsi byte clock calculated base on 70 fps;
* around 14 ms to complete a kickoff cycle if te disabled;
* vclk_line base on 60 fps; write is faster than read;
* init == start == rdptr;
*
* vsync_count is ratio of MDP VSYNC clock frequency to LCD panel
* frequency divided by the no. of rows (lines) in the LCDpanel.
*/
vsync_hz = sde_power_clk_get_rate(&priv->phandle, "vsync_clk");
if (!vsync_hz || !mode->vtotal || !mode->vrefresh) {
SDE_DEBUG_CMDENC(cmd_enc,
"invalid params - vsync_hz %u vtot %u vrefresh %u\n",
vsync_hz, mode->vtotal, mode->vrefresh);
return;
}
tc_cfg.vsync_count = vsync_hz / (mode->vtotal * mode->vrefresh);
/* enable external TE after kickoff to avoid premature autorefresh */
tc_cfg.hw_vsync_mode = 0;
/*
* By setting sync_cfg_height to near max register value, we essentially
* disable sde hw generated TE signal, since hw TE will arrive first.
* Only caveat is if due to error, we hit wrap-around.
*/
tc_cfg.sync_cfg_height = 0xFFF0;
tc_cfg.vsync_init_val = mode->vdisplay;
tc_cfg.sync_threshold_start = _get_tearcheck_threshold(phys_enc,
&extra_frame_trigger_time);
tc_cfg.sync_threshold_continue = DEFAULT_TEARCHECK_SYNC_THRESH_CONTINUE;
tc_cfg.start_pos = mode->vdisplay;
tc_cfg.rd_ptr_irq = mode->vdisplay + 1;
tc_cfg.wr_ptr_irq = 1;
SDE_DEBUG_CMDENC(cmd_enc,
"tc %d intf %d vsync_clk_speed_hz %u vtotal %u vrefresh %u\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
vsync_hz, mode->vtotal, mode->vrefresh);
SDE_DEBUG_CMDENC(cmd_enc,
"tc %d intf %d enable %u start_pos %u rd_ptr_irq %u wr_ptr_irq %u\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
tc_enable, tc_cfg.start_pos, tc_cfg.rd_ptr_irq,
tc_cfg.wr_ptr_irq);
SDE_DEBUG_CMDENC(cmd_enc,
"tc %d intf %d hw_vsync_mode %u vsync_count %u vsync_init_val %u\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
tc_cfg.hw_vsync_mode, tc_cfg.vsync_count,
tc_cfg.vsync_init_val);
SDE_DEBUG_CMDENC(cmd_enc,
"tc %d intf %d cfgheight %u thresh_start %u thresh_cont %u\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
tc_cfg.sync_cfg_height,
tc_cfg.sync_threshold_start, tc_cfg.sync_threshold_continue);
if (phys_enc->has_intf_te) {
phys_enc->hw_intf->ops.setup_tearcheck(phys_enc->hw_intf,
&tc_cfg);
phys_enc->hw_intf->ops.enable_tearcheck(phys_enc->hw_intf,
tc_enable);
} else {
phys_enc->hw_pp->ops.setup_tearcheck(phys_enc->hw_pp, &tc_cfg);
phys_enc->hw_pp->ops.enable_tearcheck(phys_enc->hw_pp,
tc_enable);
}
}
static void _sde_encoder_phys_cmd_pingpong_config(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
if (!phys_enc || !phys_enc->hw_ctl || !phys_enc->hw_pp) {
SDE_ERROR("invalid arg(s), enc %d\n", !phys_enc);
return;
}
SDE_DEBUG_CMDENC(cmd_enc, "pp %d, enabling mode:\n",
phys_enc->hw_pp->idx - PINGPONG_0);
drm_mode_debug_printmodeline(&phys_enc->cached_mode);
if (!_sde_encoder_phys_is_ppsplit_slave(phys_enc))
_sde_encoder_phys_cmd_update_intf_cfg(phys_enc);
sde_encoder_phys_cmd_tearcheck_config(phys_enc);
}
static void sde_encoder_phys_cmd_enable_helper(
struct sde_encoder_phys *phys_enc)
{
if (!phys_enc || !phys_enc->hw_ctl || !phys_enc->hw_pp) {
SDE_ERROR("invalid arg(s), encoder %d\n", !phys_enc);
return;
}
sde_encoder_helper_split_config(phys_enc, phys_enc->intf_idx);
_sde_encoder_phys_cmd_pingpong_config(phys_enc);
/*
* For pp-split, skip setting the flush bit for the slave intf, since
* both intfs use same ctl and HW will only flush the master.
*/
if (_sde_encoder_phys_is_ppsplit(phys_enc) &&
!sde_encoder_phys_cmd_is_master(phys_enc))
goto skip_flush;
_sde_encoder_phys_cmd_update_flush_mask(phys_enc);
skip_flush:
return;
}
static void sde_encoder_phys_cmd_enable(struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
if (!phys_enc || !phys_enc->hw_pp) {
SDE_ERROR("invalid phys encoder\n");
return;
}
SDE_DEBUG_CMDENC(cmd_enc, "pp %d\n", phys_enc->hw_pp->idx - PINGPONG_0);
if (phys_enc->enable_state == SDE_ENC_ENABLED) {
if (!phys_enc->cont_splash_enabled)
SDE_ERROR("already enabled\n");
return;
}
sde_encoder_phys_cmd_enable_helper(phys_enc);
phys_enc->enable_state = SDE_ENC_ENABLED;
}
static bool sde_encoder_phys_cmd_is_autorefresh_enabled(
struct sde_encoder_phys *phys_enc)
{
struct sde_hw_pingpong *hw_pp;
struct sde_hw_intf *hw_intf;
struct sde_hw_autorefresh cfg;
int ret;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf)
return false;
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return false;
if (phys_enc->has_intf_te) {
hw_intf = phys_enc->hw_intf;
if (!hw_intf->ops.get_autorefresh)
return false;
ret = hw_intf->ops.get_autorefresh(hw_intf, &cfg);
} else {
hw_pp = phys_enc->hw_pp;
if (!hw_pp->ops.get_autorefresh)
return false;
ret = hw_pp->ops.get_autorefresh(hw_pp, &cfg);
}
if (ret)
return false;
return cfg.enable;
}
static void sde_encoder_phys_cmd_connect_te(
struct sde_encoder_phys *phys_enc, bool enable)
{
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf)
return;
if (phys_enc->has_intf_te &&
phys_enc->hw_intf->ops.connect_external_te)
phys_enc->hw_intf->ops.connect_external_te(phys_enc->hw_intf,
enable);
else if (phys_enc->hw_pp->ops.connect_external_te)
phys_enc->hw_pp->ops.connect_external_te(phys_enc->hw_pp,
enable);
else
return;
SDE_EVT32(DRMID(phys_enc->parent), enable);
}
static int sde_encoder_phys_cmd_te_get_line_count(
struct sde_encoder_phys *phys_enc)
{
struct sde_hw_pingpong *hw_pp;
struct sde_hw_intf *hw_intf;
u32 line_count;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf)
return -EINVAL;
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return -EINVAL;
if (phys_enc->has_intf_te) {
hw_intf = phys_enc->hw_intf;
if (!hw_intf->ops.get_line_count)
return -EINVAL;
line_count = hw_intf->ops.get_line_count(hw_intf);
} else {
hw_pp = phys_enc->hw_pp;
if (!hw_pp->ops.get_line_count)
return -EINVAL;
line_count = hw_pp->ops.get_line_count(hw_pp);
}
return line_count;
}
static int sde_encoder_phys_cmd_get_write_line_count(
struct sde_encoder_phys *phys_enc)
{
struct sde_hw_pingpong *hw_pp;
struct sde_hw_intf *hw_intf;
struct sde_hw_pp_vsync_info info;
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf)
return -EINVAL;
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return -EINVAL;
if (phys_enc->has_intf_te) {
hw_intf = phys_enc->hw_intf;
if (!hw_intf->ops.get_vsync_info)
return -EINVAL;
if (hw_intf->ops.get_vsync_info(hw_intf, &info))
return -EINVAL;
} else {
hw_pp = phys_enc->hw_pp;
if (!hw_pp->ops.get_vsync_info)
return -EINVAL;
if (hw_pp->ops.get_vsync_info(hw_pp, &info))
return -EINVAL;
}
return (int)info.wr_ptr_line_count;
}
static void sde_encoder_phys_cmd_disable(struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
if (!phys_enc || !phys_enc->hw_pp || !phys_enc->hw_intf) {
SDE_ERROR("invalid encoder\n");
return;
}
SDE_DEBUG_CMDENC(cmd_enc, "pp %d intf %d state %d\n",
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
phys_enc->enable_state);
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_intf->idx - INTF_0,
phys_enc->enable_state);
if (phys_enc->enable_state == SDE_ENC_DISABLED) {
SDE_ERROR_CMDENC(cmd_enc, "already disabled\n");
return;
}
if (phys_enc->has_intf_te && phys_enc->hw_intf->ops.enable_tearcheck)
phys_enc->hw_intf->ops.enable_tearcheck(
phys_enc->hw_intf,
false);
else if (phys_enc->hw_pp->ops.enable_tearcheck)
phys_enc->hw_pp->ops.enable_tearcheck(phys_enc->hw_pp,
false);
phys_enc->enable_state = SDE_ENC_DISABLED;
}
static void sde_encoder_phys_cmd_destroy(struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
if (!phys_enc) {
SDE_ERROR("invalid encoder\n");
return;
}
kfree(cmd_enc);
}
static void sde_encoder_phys_cmd_get_hw_resources(
struct sde_encoder_phys *phys_enc,
struct sde_encoder_hw_resources *hw_res,
struct drm_connector_state *conn_state)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
if (!phys_enc) {
SDE_ERROR("invalid encoder\n");
return;
}
if ((phys_enc->intf_idx - INTF_0) >= INTF_MAX) {
SDE_ERROR("invalid intf idx:%d\n", phys_enc->intf_idx);
return;
}
SDE_DEBUG_CMDENC(cmd_enc, "\n");
hw_res->intfs[phys_enc->intf_idx - INTF_0] = INTF_MODE_CMD;
}
static int sde_encoder_phys_cmd_prepare_for_kickoff(
struct sde_encoder_phys *phys_enc,
struct sde_encoder_kickoff_params *params)
{
struct sde_hw_tear_check tc_cfg = {0};
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
int ret = 0;
u32 extra_frame_trigger_time;
if (!phys_enc || !phys_enc->hw_pp) {
SDE_ERROR("invalid encoder\n");
return -EINVAL;
}
SDE_DEBUG_CMDENC(cmd_enc, "pp %d\n", phys_enc->hw_pp->idx - PINGPONG_0);
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(&phys_enc->pending_kickoff_cnt),
atomic_read(&cmd_enc->autorefresh.kickoff_cnt));
phys_enc->frame_trigger_mode = params->frame_trigger_mode;
if (phys_enc->frame_trigger_mode == FRAME_DONE_WAIT_DEFAULT) {
/*
* Mark kickoff request as outstanding. If there are more
* than one outstanding frame, then we have to wait for the
* previous frame to complete
*/
ret = _sde_encoder_phys_cmd_wait_for_idle(phys_enc);
if (ret) {
atomic_set(&phys_enc->pending_kickoff_cnt, 0);
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0);
SDE_ERROR("failed wait_for_idle: %d\n", ret);
}
}
if (sde_connector_is_qsync_updated(phys_enc->connector)) {
tc_cfg.sync_threshold_start =
_get_tearcheck_threshold(phys_enc,
&extra_frame_trigger_time);
if (phys_enc->has_intf_te &&
phys_enc->hw_intf->ops.update_tearcheck)
phys_enc->hw_intf->ops.update_tearcheck(
phys_enc->hw_intf, &tc_cfg);
else if (phys_enc->hw_pp->ops.update_tearcheck)
phys_enc->hw_pp->ops.update_tearcheck(
phys_enc->hw_pp, &tc_cfg);
SDE_EVT32(DRMID(phys_enc->parent), tc_cfg.sync_threshold_start);
}
SDE_DEBUG_CMDENC(cmd_enc, "pp:%d pending_cnt %d\n",
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(&phys_enc->pending_kickoff_cnt));
return ret;
}
static bool _sde_encoder_phys_cmd_needs_vsync_change(
struct sde_encoder_phys *phys_enc, ktime_t profile_timestamp)
{
struct sde_encoder_phys_cmd *cmd_enc;
struct sde_encoder_phys_cmd_te_timestamp *cur;
struct sde_encoder_phys_cmd_te_timestamp *prev = NULL;
ktime_t time_diff;
u64 l_bound = 0, u_bound = 0;
bool ret = false;
unsigned long lock_flags;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
sde_encoder_helper_get_jitter_bounds_ns(phys_enc->parent,
&l_bound, &u_bound);
if (!l_bound || !u_bound) {
SDE_ERROR_CMDENC(cmd_enc, "invalid vsync jitter bounds\n");
return false;
}
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
list_for_each_entry_reverse(cur, &cmd_enc->te_timestamp_list, list) {
if (prev && ktime_after(cur->timestamp, profile_timestamp)) {
time_diff = ktime_sub(prev->timestamp, cur->timestamp);
if ((time_diff < l_bound) || (time_diff > u_bound)) {
ret = true;
break;
}
}
prev = cur;
}
spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
if (ret) {
SDE_DEBUG_CMDENC(cmd_enc,
"time_diff:%llu, prev:%llu, cur:%llu, jitter:%llu/%llu\n",
time_diff, prev->timestamp, cur->timestamp,
l_bound, u_bound);
SDE_EVT32(DRMID(phys_enc->parent),
(u32) (l_bound / 1000), (u32) (u_bound / 1000),
(u32) (time_diff / 1000), SDE_EVTLOG_ERROR);
}
return ret;
}
static int _sde_encoder_phys_cmd_wait_for_wr_ptr(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_wait_info wait_info = {0};
int ret;
bool frame_pending = true;
struct sde_hw_ctl *ctl;
if (!phys_enc || !phys_enc->hw_ctl) {
SDE_ERROR("invalid argument(s)\n");
return -EINVAL;
}
ctl = phys_enc->hw_ctl;
wait_info.wq = &phys_enc->pending_kickoff_wq;
wait_info.atomic_cnt = &phys_enc->pending_retire_fence_cnt;
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
/* slave encoder doesn't enable for ppsplit */
if (_sde_encoder_phys_is_ppsplit_slave(phys_enc))
return 0;
ret = sde_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_WRPTR,
&wait_info);
if (ret == -ETIMEDOUT) {
struct sde_hw_ctl *ctl = phys_enc->hw_ctl;
if (ctl && ctl->ops.get_start_state)
frame_pending = ctl->ops.get_start_state(ctl);
ret = frame_pending ? ret : 0;
}
return ret;
}
static int sde_encoder_phys_cmd_wait_for_tx_complete(
struct sde_encoder_phys *phys_enc)
{
int rc;
struct sde_encoder_phys_cmd *cmd_enc;
if (!phys_enc)
return -EINVAL;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
if (!atomic_read(&phys_enc->pending_kickoff_cnt)) {
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->intf_idx - INTF_0,
phys_enc->enable_state);
return 0;
}
rc = _sde_encoder_phys_cmd_wait_for_idle(phys_enc);
if (rc) {
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->intf_idx - INTF_0);
SDE_ERROR("failed wait_for_idle: %d\n", rc);
}
return rc;
}
static int _sde_encoder_phys_cmd_handle_wr_ptr_timeout(
struct sde_encoder_phys *phys_enc,
ktime_t profile_timestamp)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
bool switch_te;
int ret = -ETIMEDOUT;
unsigned long lock_flags;
switch_te = _sde_encoder_phys_cmd_needs_vsync_change(
phys_enc, profile_timestamp);
SDE_EVT32(DRMID(phys_enc->parent), switch_te, SDE_EVTLOG_FUNC_ENTRY);
if (switch_te) {
SDE_DEBUG_CMDENC(cmd_enc,
"wr_ptr_irq wait failed, retry with WD TE\n");
/* switch to watchdog TE and wait again */
sde_encoder_helper_switch_vsync(phys_enc->parent, true);
ret = _sde_encoder_phys_cmd_wait_for_wr_ptr(phys_enc);
/* switch back to default TE */
sde_encoder_helper_switch_vsync(phys_enc->parent, false);
}
/*
* Signaling the retire fence at wr_ptr timeout
* to allow the next commit and avoid device freeze.
*/
if (ret == -ETIMEDOUT) {
SDE_ERROR_CMDENC(cmd_enc,
"wr_ptr_irq wait failed, switch_te:%d\n", switch_te);
SDE_EVT32(DRMID(phys_enc->parent), switch_te, SDE_EVTLOG_ERROR);
if (sde_encoder_phys_cmd_is_master(phys_enc) &&
atomic_add_unless(
&phys_enc->pending_retire_fence_cnt, -1, 0)) {
spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE);
spin_unlock_irqrestore(phys_enc->enc_spinlock,
lock_flags);
}
}
cmd_enc->wr_ptr_wait_success = (ret == 0) ? true : false;
return ret;
}
static int sde_encoder_phys_cmd_wait_for_commit_done(
struct sde_encoder_phys *phys_enc)
{
int rc = 0, i, pending_cnt;
struct sde_encoder_phys_cmd *cmd_enc;
ktime_t profile_timestamp = ktime_get();
if (!phys_enc)
return -EINVAL;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
/* only required for master controller */
if (sde_encoder_phys_cmd_is_master(phys_enc)) {
rc = _sde_encoder_phys_cmd_wait_for_wr_ptr(phys_enc);
if (rc == -ETIMEDOUT) {
/*
* Profile all the TE received after profile_timestamp
* and if the jitter is more, switch to watchdog TE
* and wait for wr_ptr again. Finally move back to
* default TE.
*/
rc = _sde_encoder_phys_cmd_handle_wr_ptr_timeout(
phys_enc, profile_timestamp);
if (rc == -ETIMEDOUT)
goto wait_for_idle;
}
if (cmd_enc->autorefresh.cfg.enable)
rc = _sde_encoder_phys_cmd_wait_for_autorefresh_done(
phys_enc);
}
/* wait for posted start or serialize trigger */
if ((atomic_read(&phys_enc->pending_kickoff_cnt) > 1) ||
(!rc && phys_enc->frame_trigger_mode == FRAME_DONE_WAIT_SERIALIZE))
goto wait_for_idle;
return rc;
wait_for_idle:
pending_cnt = atomic_read(&phys_enc->pending_kickoff_cnt);
for (i = 0; i < pending_cnt; i++)
rc |= sde_encoder_wait_for_event(phys_enc->parent,
MSM_ENC_TX_COMPLETE);
if (rc) {
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->frame_trigger_mode,
atomic_read(&phys_enc->pending_kickoff_cnt),
phys_enc->enable_state, rc);
SDE_ERROR("pp:%d failed wait_for_idle: %d\n",
phys_enc->hw_pp->idx - PINGPONG_0, rc);
if (phys_enc->enable_state == SDE_ENC_ERR_NEEDS_HW_RESET)
sde_encoder_helper_needs_hw_reset(phys_enc->parent);
}
return rc;
}
static int sde_encoder_phys_cmd_wait_for_vblank(
struct sde_encoder_phys *phys_enc)
{
int rc = 0;
struct sde_encoder_phys_cmd *cmd_enc;
struct sde_encoder_wait_info wait_info = {0};
if (!phys_enc)
return -EINVAL;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
/* only required for master controller */
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return rc;
wait_info.wq = &cmd_enc->pending_vblank_wq;
wait_info.atomic_cnt = &cmd_enc->pending_vblank_cnt;
wait_info.timeout_ms = _sde_encoder_phys_cmd_get_idle_timeout(cmd_enc);
atomic_inc(&cmd_enc->pending_vblank_cnt);
rc = sde_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_RDPTR,
&wait_info);
return rc;
}
static void sde_encoder_phys_cmd_update_split_role(
struct sde_encoder_phys *phys_enc,
enum sde_enc_split_role role)
{
struct sde_encoder_phys_cmd *cmd_enc;
enum sde_enc_split_role old_role;
bool is_ppsplit;
if (!phys_enc)
return;
cmd_enc = to_sde_encoder_phys_cmd(phys_enc);
old_role = phys_enc->split_role;
is_ppsplit = _sde_encoder_phys_is_ppsplit(phys_enc);
phys_enc->split_role = role;
SDE_DEBUG_CMDENC(cmd_enc, "old role %d new role %d\n",
old_role, role);
/*
* ppsplit solo needs to reprogram because intf may have swapped without
* role changing on left-only, right-only back-to-back commits
*/
if (!(is_ppsplit && role == ENC_ROLE_SOLO) &&
(role == old_role || role == ENC_ROLE_SKIP))
return;
sde_encoder_helper_split_config(phys_enc, phys_enc->intf_idx);
_sde_encoder_phys_cmd_pingpong_config(phys_enc);
_sde_encoder_phys_cmd_update_flush_mask(phys_enc);
}
static void sde_encoder_phys_cmd_prepare_commit(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
int trial = 0;
if (!phys_enc)
return;
if (!sde_encoder_phys_cmd_is_master(phys_enc))
return;
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->intf_idx - INTF_0,
cmd_enc->autorefresh.cfg.enable);
if (!sde_encoder_phys_cmd_is_autorefresh_enabled(phys_enc))
return;
/*
* If autorefresh is enabled, disable it and make sure it is safe to
* proceed with current frame commit/push. Sequence fallowed is,
* 1. Disable TE
* 2. Disable autorefresh config
* 4. Poll for frame transfer ongoing to be false
* 5. Enable TE back
*/
sde_encoder_phys_cmd_connect_te(phys_enc, false);
_sde_encoder_phys_cmd_config_autorefresh(phys_enc, 0);
do {
udelay(SDE_ENC_MAX_POLL_TIMEOUT_US);
if ((trial * SDE_ENC_MAX_POLL_TIMEOUT_US)
> (KICKOFF_TIMEOUT_MS * USEC_PER_MSEC)) {
SDE_ERROR_CMDENC(cmd_enc,
"disable autorefresh failed\n");
break;
}
trial++;
} while (_sde_encoder_phys_cmd_is_ongoing_pptx(phys_enc));
sde_encoder_phys_cmd_connect_te(phys_enc, true);
SDE_DEBUG_CMDENC(cmd_enc, "disabled autorefresh\n");
}
static void sde_encoder_phys_cmd_trigger_start(
struct sde_encoder_phys *phys_enc)
{
struct sde_encoder_phys_cmd *cmd_enc =
to_sde_encoder_phys_cmd(phys_enc);
u32 frame_cnt;
if (!phys_enc)
return;
/* we don't issue CTL_START when using autorefresh */
frame_cnt = _sde_encoder_phys_cmd_get_autorefresh_property(phys_enc);
if (frame_cnt) {
_sde_encoder_phys_cmd_config_autorefresh(phys_enc, frame_cnt);
atomic_inc(&cmd_enc->autorefresh.kickoff_cnt);
} else {
sde_encoder_helper_trigger_start(phys_enc);
}
}
static void sde_encoder_phys_cmd_setup_vsync_source(
struct sde_encoder_phys *phys_enc,
u32 vsync_source, bool is_dummy)
{
if (!phys_enc || !phys_enc->hw_intf)
return;
sde_encoder_helper_vsync_config(phys_enc, vsync_source, is_dummy);
if (phys_enc->has_intf_te && phys_enc->hw_intf->ops.vsync_sel)
phys_enc->hw_intf->ops.vsync_sel(phys_enc->hw_intf,
vsync_source);
}
static void sde_encoder_phys_cmd_init_ops(struct sde_encoder_phys_ops *ops)
{
ops->prepare_commit = sde_encoder_phys_cmd_prepare_commit;
ops->is_master = sde_encoder_phys_cmd_is_master;
ops->mode_set = sde_encoder_phys_cmd_mode_set;
ops->cont_splash_mode_set = sde_encoder_phys_cmd_cont_splash_mode_set;
ops->mode_fixup = sde_encoder_phys_cmd_mode_fixup;
ops->enable = sde_encoder_phys_cmd_enable;
ops->disable = sde_encoder_phys_cmd_disable;
ops->destroy = sde_encoder_phys_cmd_destroy;
ops->get_hw_resources = sde_encoder_phys_cmd_get_hw_resources;
ops->control_vblank_irq = sde_encoder_phys_cmd_control_vblank_irq;
ops->wait_for_commit_done = sde_encoder_phys_cmd_wait_for_commit_done;
ops->prepare_for_kickoff = sde_encoder_phys_cmd_prepare_for_kickoff;
ops->wait_for_tx_complete = sde_encoder_phys_cmd_wait_for_tx_complete;
ops->wait_for_vblank = sde_encoder_phys_cmd_wait_for_vblank;
ops->trigger_flush = sde_encoder_helper_trigger_flush;
ops->trigger_start = sde_encoder_phys_cmd_trigger_start;
ops->needs_single_flush = sde_encoder_phys_needs_single_flush;
ops->hw_reset = sde_encoder_helper_hw_reset;
ops->irq_control = sde_encoder_phys_cmd_irq_control;
ops->update_split_role = sde_encoder_phys_cmd_update_split_role;
ops->restore = sde_encoder_phys_cmd_enable_helper;
ops->control_te = sde_encoder_phys_cmd_connect_te;
ops->is_autorefresh_enabled =
sde_encoder_phys_cmd_is_autorefresh_enabled;
ops->get_line_count = sde_encoder_phys_cmd_te_get_line_count;
ops->get_wr_line_count = sde_encoder_phys_cmd_get_write_line_count;
ops->wait_for_active = NULL;
ops->setup_vsync_source = sde_encoder_phys_cmd_setup_vsync_source;
ops->setup_misr = sde_encoder_helper_setup_misr;
ops->collect_misr = sde_encoder_helper_collect_misr;
}
struct sde_encoder_phys *sde_encoder_phys_cmd_init(
struct sde_enc_phys_init_params *p)
{
struct sde_encoder_phys *phys_enc = NULL;
struct sde_encoder_phys_cmd *cmd_enc = NULL;
struct sde_hw_mdp *hw_mdp;
struct sde_encoder_irq *irq;
int i, ret = 0;
SDE_DEBUG("intf %d\n", p->intf_idx - INTF_0);
cmd_enc = kzalloc(sizeof(*cmd_enc), GFP_KERNEL);
if (!cmd_enc) {
ret = -ENOMEM;
SDE_ERROR("failed to allocate\n");
goto fail;
}
phys_enc = &cmd_enc->base;
hw_mdp = sde_rm_get_mdp(&p->sde_kms->rm);
if (IS_ERR_OR_NULL(hw_mdp)) {
ret = PTR_ERR(hw_mdp);
SDE_ERROR("failed to get mdptop\n");
goto fail_mdp_init;
}
phys_enc->hw_mdptop = hw_mdp;
phys_enc->intf_idx = p->intf_idx;
phys_enc->parent = p->parent;
phys_enc->parent_ops = p->parent_ops;
phys_enc->sde_kms = p->sde_kms;
phys_enc->split_role = p->split_role;
phys_enc->intf_mode = INTF_MODE_CMD;
phys_enc->enc_spinlock = p->enc_spinlock;
phys_enc->vblank_ctl_lock = p->vblank_ctl_lock;
cmd_enc->stream_sel = 0;
phys_enc->enable_state = SDE_ENC_DISABLED;
sde_encoder_phys_cmd_init_ops(&phys_enc->ops);
phys_enc->comp_type = p->comp_type;
if (sde_hw_intf_te_supported(phys_enc->sde_kms->catalog))
phys_enc->has_intf_te = true;
else
phys_enc->has_intf_te = false;
for (i = 0; i < INTR_IDX_MAX; i++) {
irq = &phys_enc->irq[i];
INIT_LIST_HEAD(&irq->cb.list);
irq->irq_idx = -EINVAL;
irq->hw_idx = -EINVAL;
irq->cb.arg = phys_enc;
}
irq = &phys_enc->irq[INTR_IDX_CTL_START];
irq->name = "ctl_start";
irq->intr_type = SDE_IRQ_TYPE_CTL_START;
irq->intr_idx = INTR_IDX_CTL_START;
irq->cb.func = NULL;
irq = &phys_enc->irq[INTR_IDX_PINGPONG];
irq->name = "pp_done";
irq->intr_type = SDE_IRQ_TYPE_PING_PONG_COMP;
irq->intr_idx = INTR_IDX_PINGPONG;
irq->cb.func = sde_encoder_phys_cmd_pp_tx_done_irq;
irq = &phys_enc->irq[INTR_IDX_RDPTR];
irq->intr_idx = INTR_IDX_RDPTR;
irq->name = "te_rd_ptr";
if (phys_enc->has_intf_te)
irq->intr_type = SDE_IRQ_TYPE_INTF_TEAR_RD_PTR;
else
irq->intr_type = SDE_IRQ_TYPE_PING_PONG_RD_PTR;
irq->cb.func = sde_encoder_phys_cmd_te_rd_ptr_irq;
irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
irq->name = "underrun";
irq->intr_type = SDE_IRQ_TYPE_INTF_UNDER_RUN;
irq->intr_idx = INTR_IDX_UNDERRUN;
irq->cb.func = sde_encoder_phys_cmd_underrun_irq;
irq = &phys_enc->irq[INTR_IDX_AUTOREFRESH_DONE];
irq->name = "autorefresh_done";
if (phys_enc->has_intf_te)
irq->intr_type = SDE_IRQ_TYPE_INTF_TEAR_AUTO_REF;
else
irq->intr_type = SDE_IRQ_TYPE_PING_PONG_AUTO_REF;
irq->intr_idx = INTR_IDX_AUTOREFRESH_DONE;
irq->cb.func = sde_encoder_phys_cmd_autorefresh_done_irq;
irq = &phys_enc->irq[INTR_IDX_WRPTR];
irq->intr_idx = INTR_IDX_WRPTR;
irq->name = "wr_ptr";
if (phys_enc->has_intf_te)
irq->intr_type = SDE_IRQ_TYPE_INTF_TEAR_WR_PTR;
else
irq->intr_type = SDE_IRQ_TYPE_PING_PONG_WR_PTR;
irq->cb.func = sde_encoder_phys_cmd_wr_ptr_irq;
atomic_set(&phys_enc->vblank_refcount, 0);
atomic_set(&phys_enc->pending_kickoff_cnt, 0);
atomic_set(&phys_enc->pending_retire_fence_cnt, 0);
atomic_set(&cmd_enc->pending_vblank_cnt, 0);
init_waitqueue_head(&phys_enc->pending_kickoff_wq);
init_waitqueue_head(&cmd_enc->pending_vblank_wq);
atomic_set(&cmd_enc->autorefresh.kickoff_cnt, 0);
init_waitqueue_head(&cmd_enc->autorefresh.kickoff_wq);
INIT_LIST_HEAD(&cmd_enc->te_timestamp_list);
for (i = 0; i < MAX_TE_PROFILE_COUNT; i++)
list_add(&cmd_enc->te_timestamp[i].list,
&cmd_enc->te_timestamp_list);
SDE_DEBUG_CMDENC(cmd_enc, "created\n");
return phys_enc;
fail_mdp_init:
kfree(cmd_enc);
fail:
return ERR_PTR(ret);
}