Piteball
/
android_kernel_samsung_msm8976
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
1
1
Fork 0
Code Issues Projects Releases Wiki Activity
android_kernel_samsung_msm8976/drivers/video/msm/mdss/mdss_mdp_intf_cmd.c

1669 lines
44 KiB
C
Raw Blame History

/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/kernel.h>
#include <linux/pm_runtime.h>
#include <linux/iopoll.h>
#include <linux/delay.h>
#include "mdss_mdp.h"
#include "mdss_panel.h"
#include "mdss_debug.h"
#include "mdss_mdp_trace.h"
#define VSYNC_EXPIRE_TICK 6
#define MAX_RECOVERY_TRIALS 10
#define MAX_SESSIONS 2
#define SPLIT_MIXER_OFFSET 0x800
/* wait for at most 2 vsync for lowest refresh rate (24hz) */
#define KOFF_TIMEOUT msecs_to_jiffies(100)
#define STOP_TIMEOUT(hz) msecs_to_jiffies((1000 / hz) * (VSYNC_EXPIRE_TICK + 2))
#define POWER_COLLAPSE_TIME msecs_to_jiffies(100)
static DEFINE_MUTEX(cmd_clk_mtx);
struct mdss_mdp_cmd_ctx {
struct mdss_mdp_ctl *ctl;
u32 pp_num;
u8 ref_cnt;
struct completion stop_comp;
struct completion readptr_done;
atomic_t readptr_cnt;
wait_queue_head_t rdptr_waitq;
wait_queue_head_t pp_waitq;
struct list_head vsync_handlers;
int panel_power_state;
atomic_t koff_cnt;
u32 intf_stopped;
int clk_enabled;
int vsync_enabled;
int rdptr_enabled;
struct mutex clk_mtx;
spinlock_t clk_lock;
spinlock_t koff_lock;
struct work_struct clk_work;
struct work_struct pp_done_work;
struct mutex autorefresh_mtx;
atomic_t pp_done_cnt;
int autorefresh_pending_frame_cnt;
bool autorefresh_off_pending;
bool autorefresh_init;
struct mdss_intf_recovery intf_recovery;
struct mdss_intf_recovery intf_mdp_callback;
struct mdss_mdp_cmd_ctx *sync_ctx; /* for partial update */
u32 pp_timeout_report_cnt;
int pingpong_split_slave;
bool pending_mode_switch; /* Used to prevent powering down in stop */
};
struct mdss_mdp_cmd_ctx mdss_mdp_cmd_ctx_list[MAX_SESSIONS];
static int mdss_mdp_cmd_do_notifier(struct mdss_mdp_cmd_ctx *ctx);
static bool __mdss_mdp_cmd_is_panel_power_off(struct mdss_mdp_cmd_ctx *ctx)
{
return mdss_panel_is_power_off(ctx->panel_power_state);
}
static bool __mdss_mdp_cmd_is_panel_power_on_interactive(
struct mdss_mdp_cmd_ctx *ctx)
{
return mdss_panel_is_power_on_interactive(ctx->panel_power_state);
}
static inline u32 mdss_mdp_cmd_line_count(struct mdss_mdp_ctl *ctl)
{
struct mdss_mdp_mixer *mixer;
u32 cnt = 0xffff; /* init it to an invalid value */
u32 init;
u32 height;
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (!mixer) {
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_RIGHT);
if (!mixer) {
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
goto exit;
}
}
init = mdss_mdp_pingpong_read(mixer->pingpong_base,
MDSS_MDP_REG_PP_VSYNC_INIT_VAL) & 0xffff;
height = mdss_mdp_pingpong_read(mixer->pingpong_base,
MDSS_MDP_REG_PP_SYNC_CONFIG_HEIGHT) & 0xffff;
if (height < init) {
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
goto exit;
}
cnt = mdss_mdp_pingpong_read(mixer->pingpong_base,
MDSS_MDP_REG_PP_INT_COUNT_VAL) & 0xffff;
if (cnt < init) /* wrap around happened at height */
cnt += (height - init);
else
cnt -= init;
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
pr_debug("cnt=%d init=%d height=%d\n", cnt, init, height);
exit:
return cnt;
}
static int mdss_mdp_tearcheck_enable(struct mdss_mdp_ctl *ctl, bool enable)
{
struct mdss_data_type *mdata = mdss_mdp_get_mdata();
struct mdss_mdp_ctl *sctl;
struct mdss_mdp_pp_tear_check *te;
struct mdss_mdp_mixer *mixer =
mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (IS_ERR_OR_NULL(ctl->panel_data)) {
pr_err("no panel data\n");
return -ENODEV;
}
if (IS_ERR_OR_NULL(mixer)) {
pr_err("mixer not configured\n");
return -ENODEV;
}
sctl = mdss_mdp_get_split_ctl(ctl);
te = &ctl->panel_data->panel_info.te;
pr_debug("%s: enable=%d\n", __func__, enable);
mdss_mdp_pingpong_write(mixer->pingpong_base,
MDSS_MDP_REG_PP_TEAR_CHECK_EN,
(te ? te->tear_check_en : 0) && enable);
/*
* When there are two controls, driver needs to enable
* tear check configuration for both.
*/
if (sctl) {
mixer = mdss_mdp_mixer_get(sctl, MDSS_MDP_MIXER_MUX_LEFT);
te = &sctl->panel_data->panel_info.te;
mdss_mdp_pingpong_write(mixer->pingpong_base,
MDSS_MDP_REG_PP_TEAR_CHECK_EN,
(te ? te->tear_check_en : 0) && enable);
}
/*
* In the case of pingpong split, there is no second
* control and enables only slave tear check block as
* defined in slave_pingpong_base.
*/
if (is_pingpong_split(ctl->mfd))
mdss_mdp_pingpong_write(mdata->slave_pingpong_base,
MDSS_MDP_REG_PP_TEAR_CHECK_EN,
(te ? te->tear_check_en : 0) && enable);
return 0;
}
static int mdss_mdp_cmd_tearcheck_cfg(struct mdss_mdp_mixer *mixer,
struct mdss_mdp_cmd_ctx *ctx)
{
struct mdss_mdp_pp_tear_check *te = NULL;
struct mdss_panel_info *pinfo;
u32 vsync_clk_speed_hz, total_lines, vclks_line, cfg = 0;
char __iomem *pingpong_base;
struct mdss_mdp_ctl *ctl = ctx->ctl;
struct mdss_data_type *mdata = mdss_mdp_get_mdata();
if (IS_ERR_OR_NULL(ctl->panel_data)) {
pr_err("no panel data\n");
return -ENODEV;
}
pinfo = &ctl->panel_data->panel_info;
te = &ctl->panel_data->panel_info.te;
mdss_mdp_vsync_clk_enable(1);
vsync_clk_speed_hz =
mdss_mdp_get_clk_rate(MDSS_CLK_MDP_VSYNC);
total_lines = mdss_panel_get_vtotal(pinfo);
total_lines *= pinfo->mipi.frame_rate;
vclks_line = (total_lines) ? vsync_clk_speed_hz/total_lines : 0;
cfg = BIT(19);
if (pinfo->mipi.hw_vsync_mode)
cfg |= BIT(20);
if (te->refx100) {
vclks_line = vclks_line * pinfo->mipi.frame_rate *
100 / te->refx100;
} else {
pr_warn("refx100 cannot be zero! Use 6000 as default\n");
vclks_line = vclks_line * pinfo->mipi.frame_rate *
100 / 6000;
}
cfg |= vclks_line;
pr_debug("%s: yres=%d vclks=%x height=%d init=%d rd=%d start=%d\n",
__func__, pinfo->yres, vclks_line, te->sync_cfg_height,
te->vsync_init_val, te->rd_ptr_irq, te->start_pos);
pr_debug("thrd_start =%d thrd_cont=%d\n",
te->sync_threshold_start, te->sync_threshold_continue);
pingpong_base = mixer->pingpong_base;
if (ctx->pingpong_split_slave)
pingpong_base = mdata->slave_pingpong_base;
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_SYNC_CONFIG_VSYNC, cfg);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_SYNC_CONFIG_HEIGHT,
te ? te->sync_cfg_height : 0);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_VSYNC_INIT_VAL,
te ? te->vsync_init_val : 0);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_RD_PTR_IRQ,
te ? te->rd_ptr_irq : 0);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_START_POS,
te ? te->start_pos : 0);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_SYNC_THRESH,
te ? ((te->sync_threshold_continue << 16) |
te->sync_threshold_start) : 0);
mdss_mdp_pingpong_write(pingpong_base,
MDSS_MDP_REG_PP_SYNC_WRCOUNT,
te ? (te->start_pos + te->sync_threshold_start + 1) : 0);
return 0;
}
static int mdss_mdp_cmd_tearcheck_setup(struct mdss_mdp_cmd_ctx *ctx)
{
int rc = 0;
struct mdss_mdp_mixer *mixer;
struct mdss_mdp_ctl *ctl = ctx->ctl;
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (mixer) {
rc = mdss_mdp_cmd_tearcheck_cfg(mixer, ctx);
if (rc)
goto err;
}
if (!(ctl->opmode & MDSS_MDP_CTL_OP_PACK_3D_ENABLE)) {
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_RIGHT);
if (mixer)
rc = mdss_mdp_cmd_tearcheck_cfg(mixer, ctx);
}
err:
return rc;
}
static inline void mdss_mdp_cmd_clk_on(struct mdss_mdp_cmd_ctx *ctx)
{
unsigned long flags;
struct mdss_data_type *mdata = mdss_mdp_get_mdata();
int irq_en, rc;
if (__mdss_mdp_cmd_is_panel_power_off(ctx))
return;
mutex_lock(&ctx->clk_mtx);
MDSS_XLOG(ctx->pp_num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
if (!ctx->clk_enabled) {
mdss_bus_bandwidth_ctrl(true);
ctx->clk_enabled = 1;
rc = mdss_iommu_ctrl(1);
if (IS_ERR_VALUE(rc))
pr_err("IOMMU attach failed\n");
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
mdss_mdp_ctl_intf_event
(ctx->ctl, MDSS_EVENT_PANEL_CLK_CTRL, (void *)1);
mdss_mdp_hist_intr_setup(&mdata->hist_intr, MDSS_IRQ_RESUME);
}
spin_lock_irqsave(&ctx->clk_lock, flags);
irq_en = !ctx->rdptr_enabled;
ctx->rdptr_enabled = VSYNC_EXPIRE_TICK;
spin_unlock_irqrestore(&ctx->clk_lock, flags);
if (irq_en)
mdss_mdp_irq_enable(MDSS_MDP_IRQ_PING_PONG_RD_PTR, ctx->pp_num);
mutex_unlock(&ctx->clk_mtx);
}
static inline void mdss_mdp_cmd_clk_off(struct mdss_mdp_cmd_ctx *ctx)
{
unsigned long flags;
struct mdss_data_type *mdata = mdss_mdp_get_mdata();
int set_clk_off = 0;
if (ctx->autorefresh_init) {
/* Do not turn off clocks if aurtorefresh is on. */
return;
}
mutex_lock(&ctx->clk_mtx);
MDSS_XLOG(ctx->pp_num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
spin_lock_irqsave(&ctx->clk_lock, flags);
if (!ctx->rdptr_enabled)
set_clk_off = 1;
spin_unlock_irqrestore(&ctx->clk_lock, flags);
pr_debug("clk_enabled =%d set_clk_off=%d\n", ctx->clk_enabled,
set_clk_off);
if (ctx->clk_enabled && set_clk_off) {
ctx->clk_enabled = 0;
mdss_mdp_hist_intr_setup(&mdata->hist_intr, MDSS_IRQ_SUSPEND);
mdss_mdp_ctl_intf_event
(ctx->ctl, MDSS_EVENT_PANEL_CLK_CTRL, (void *)0);
mdss_iommu_ctrl(0);
mdss_bus_bandwidth_ctrl(false);
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
}
mutex_unlock(&ctx->clk_mtx);
}
static void mdss_mdp_cmd_readptr_done(void *arg)
{
struct mdss_mdp_ctl *ctl = arg;
struct mdss_mdp_cmd_ctx *ctx = ctl->intf_ctx[MASTER_CTX];
struct mdss_mdp_vsync_handler *tmp;
ktime_t vsync_time;
if (!ctx) {
pr_err("invalid ctx\n");
return;
}
if (ctx->autorefresh_init) {
pr_debug("Completing read pointer done\n");
complete_all(&ctx->readptr_done);
}
/* If caller is waiting for the read pointer, notify */
if (atomic_read(&ctx->readptr_cnt)) {
if (atomic_add_unless(&ctx->readptr_cnt, -1, 0)) {
MDSS_XLOG(atomic_read(&ctx->readptr_cnt));
if (atomic_read(&ctx->readptr_cnt))
pr_warn("%s: too many rdptrs=%d!\n", __func__,
atomic_read(&ctx->readptr_cnt));
}
wake_up_all(&ctx->rdptr_waitq);
}
if (ctx->autorefresh_off_pending)
ctx->autorefresh_off_pending = false;
vsync_time = ktime_get();
ctl->vsync_cnt++;
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
spin_lock(&ctx->clk_lock);
list_for_each_entry(tmp, &ctx->vsync_handlers, list) {
if (tmp->enabled && !tmp->cmd_post_flush)
tmp->vsync_handler(ctl, vsync_time);
}
if (!ctx->vsync_enabled) {
if (ctx->rdptr_enabled && !ctx->autorefresh_init)
ctx->rdptr_enabled--;
/* keep clk on during kickoff */
if (ctx->rdptr_enabled == 0 && atomic_read(&ctx->koff_cnt))
ctx->rdptr_enabled++;
}
if (ctx->rdptr_enabled == 0) {
mdss_mdp_irq_disable_nosync
(MDSS_MDP_IRQ_PING_PONG_RD_PTR, ctx->pp_num);
complete(&ctx->stop_comp);
schedule_work(&ctx->clk_work);
}
spin_unlock(&ctx->clk_lock);
}
static int mdss_mdp_cmd_wait4readptr(struct mdss_mdp_cmd_ctx *ctx)
{
int rc = 0;
MDSS_XLOG(0xeeee, rc, atomic_read(&ctx->readptr_cnt), ctx->ctl->intf_num,sched_clock(),jiffies);
rc = wait_event_timeout(ctx->rdptr_waitq,
atomic_read(&ctx->readptr_cnt) == 0,
KOFF_TIMEOUT);
MDSS_XLOG(0xffff, rc, atomic_read(&ctx->readptr_cnt), ctx->ctl->intf_num,sched_clock(),jiffies);
if (rc <= 0) {
if (atomic_read(&ctx->readptr_cnt))
pr_err("timed out waiting for rdptr irq\n");
else
rc = 1;
}
return rc;
}
static void mdss_mdp_cmd_intf_callback(void *data, int event)
{
struct mdss_mdp_cmd_ctx *ctx = data;
struct mdss_mdp_pp_tear_check *te = NULL;
u32 timeout_us = 3000, val = 0;
struct mdss_mdp_mixer *mixer = NULL;
if (!data) {
pr_err("%s: invalid ctx\n", __func__);
return;
}
if (!ctx->ctl)
return;
switch (event) {
case MDP_INTF_CALLBACK_DSI_WAIT:
pr_debug("%s: wait for frame cnt:%d event:%d\n",
__func__, atomic_read(&ctx->readptr_cnt), event);
/*
* if we are going to suspended or pp split is not enabled,
* just return
*/
if (ctx->intf_stopped || !is_pingpong_split(ctx->ctl->mfd))
return;
atomic_inc(&ctx->readptr_cnt);
/* enable clks and rd_ptr interrupt */
mdss_mdp_cmd_clk_on(ctx);
te = &ctx->ctl->panel_data->panel_info.te;
mixer = mdss_mdp_mixer_get(ctx->ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (!mixer) {
pr_err("%s: null mixer\n", __func__);
return;
}
/* wait for read pointer and frame transfer to start */
MDSS_XLOG(atomic_read(&ctx->readptr_cnt));
if (mdss_mdp_cmd_wait4readptr(ctx))
readl_poll_timeout(mixer->pingpong_base +
MDSS_MDP_REG_PP_INT_COUNT_VAL, val,
(val & 0xffff) > (te->start_pos +
te->sync_threshold_start), 10, timeout_us);
MDSS_XLOG(val,te->start_pos,te->sync_threshold_start,timeout_us);
/*
* rdptr interrupt will be disabled from command mode
* clock work queue
*/
break;
default:
pr_debug("%s: unhandled event=%d\n", __func__, event);
break;
}
}
static void mdss_mdp_cmd_intf_recovery(void *data, int event)
{
struct mdss_mdp_cmd_ctx *ctx = data;
unsigned long flags;
bool reset_done = false, notify_frame_timeout = false;
if (!data) {
pr_err("%s: invalid ctx\n", __func__);
return;
}
if (!ctx->ctl)
return;
/*
* Currently, only intf_fifo_underflow is
* supported for recovery sequence for command
* mode DSI interface
*/
if (event != MDP_INTF_DSI_CMD_FIFO_UNDERFLOW) {
pr_warn("%s: unsupported recovery event:%d\n",
__func__, event);
return;
}
if (atomic_read(&ctx->koff_cnt)) {
mdss_mdp_ctl_reset(ctx->ctl);
reset_done = true;
}
spin_lock_irqsave(&ctx->koff_lock, flags);
if (reset_done && atomic_add_unless(&ctx->koff_cnt, -1, 0)) {
pr_debug("%s: intf_num=%d\n", __func__,
ctx->ctl->intf_num);
mdss_mdp_irq_disable_nosync(MDSS_MDP_IRQ_PING_PONG_COMP,
ctx->pp_num);
if (mdss_mdp_cmd_do_notifier(ctx))
notify_frame_timeout = true;
}
spin_unlock_irqrestore(&ctx->koff_lock, flags);
if (notify_frame_timeout)
mdss_mdp_ctl_notify(ctx->ctl, MDP_NOTIFY_FRAME_TIMEOUT);
}
static void mdss_mdp_cmd_pingpong_done(void *arg)
{
struct mdss_mdp_ctl *ctl = arg;
struct mdss_mdp_cmd_ctx *ctx = ctl->intf_ctx[MASTER_CTX];
struct mdss_mdp_vsync_handler *tmp;
ktime_t vsync_time;
u32 status;
if (!ctx) {
pr_err("%s: invalid ctx\n", __func__);
return;
}
mdss_mdp_ctl_perf_set_transaction_status(ctl,
PERF_HW_MDP_STATE, PERF_STATUS_DONE);
spin_lock(&ctx->clk_lock);
list_for_each_entry(tmp, &ctx->vsync_handlers, list) {
if (tmp->enabled && tmp->cmd_post_flush)
tmp->vsync_handler(ctl, vsync_time);
}
spin_unlock(&ctx->clk_lock);
spin_lock(&ctx->koff_lock);
mdss_mdp_irq_disable_nosync(MDSS_MDP_IRQ_PING_PONG_COMP, ctx->pp_num);
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
if (atomic_add_unless(&ctx->koff_cnt, -1, 0)) {
if (atomic_read(&ctx->koff_cnt))
pr_err("%s: too many kickoffs=%d!\n", __func__,
atomic_read(&ctx->koff_cnt));
if (mdss_mdp_cmd_do_notifier(ctx)) {
atomic_inc(&ctx->pp_done_cnt);
status = mdss_mdp_ctl_perf_get_transaction_status(ctl);
if (status == 0)
schedule_work(&ctx->pp_done_work);
}
wake_up_all(&ctx->pp_waitq);
} else if (!ctl->cmd_autorefresh_en) {
pr_err("%s: should not have pingpong interrupt!\n", __func__);
}
trace_mdp_cmd_pingpong_done(ctl, ctx->pp_num,
atomic_read(&ctx->koff_cnt));
pr_debug("%s: ctl_num=%d intf_num=%d ctx=%d kcnt=%d\n", __func__,
ctl->num, ctl->intf_num, ctx->pp_num,
atomic_read(&ctx->koff_cnt));
spin_unlock(&ctx->koff_lock);
}
static void pingpong_done_work(struct work_struct *work)
{
struct mdss_mdp_cmd_ctx *ctx =
container_of(work, typeof(*ctx), pp_done_work);
if (ctx->ctl) {
while (atomic_add_unless(&ctx->pp_done_cnt, -1, 0))
mdss_mdp_ctl_notify(ctx->ctl, MDP_NOTIFY_FRAME_DONE);
mdss_mdp_ctl_perf_release_bw(ctx->ctl);
}
}
static void clk_ctrl_work(struct work_struct *work)
{
struct mdss_mdp_cmd_ctx *ctx =
container_of(work, typeof(*ctx), clk_work);
struct mdss_mdp_ctl *ctl, *sctl;
struct mdss_mdp_cmd_ctx *sctx = NULL;
if (!ctx) {
pr_err("%s: invalid ctx\n", __func__);
return;
}
ctl = ctx->ctl;
if (ctl->panel_data->panel_info.is_split_display) {
mutex_lock(&cmd_clk_mtx);
sctl = mdss_mdp_get_split_ctl(ctl);
if (sctl) {
sctx =
(struct mdss_mdp_cmd_ctx *)sctl->intf_ctx[MASTER_CTX];
} else {
/* slave ctl, let master ctl do clk control */
mutex_unlock(&cmd_clk_mtx);
return;
}
}
mdss_mdp_cmd_clk_off(ctx);
if (ctl->panel_data->panel_info.is_split_display) {
if (sctx)
mdss_mdp_cmd_clk_off(sctx);
mutex_unlock(&cmd_clk_mtx);
}
}
static int mdss_mdp_cmd_add_vsync_handler(struct mdss_mdp_ctl *ctl,
struct mdss_mdp_vsync_handler *handle)
{
struct mdss_mdp_ctl *sctl = NULL;
struct mdss_mdp_cmd_ctx *ctx, *sctx = NULL;
unsigned long flags;
bool enable_rdptr = false;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("%s: invalid ctx\n", __func__);
return -ENODEV;
}
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
sctl = mdss_mdp_get_split_ctl(ctl);
if (sctl)
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
spin_lock_irqsave(&ctx->clk_lock, flags);
if (!handle->enabled) {
handle->enabled = true;
list_add(&handle->list, &ctx->vsync_handlers);
enable_rdptr = !handle->cmd_post_flush;
if (enable_rdptr) {
ctx->vsync_enabled++;
if (sctx)
sctx->vsync_enabled++;
}
}
spin_unlock_irqrestore(&ctx->clk_lock, flags);
if (enable_rdptr) {
if (ctl->panel_data->panel_info.is_split_display)
mutex_lock(&cmd_clk_mtx);
mdss_mdp_cmd_clk_on(ctx);
if (sctx)
mdss_mdp_cmd_clk_on(sctx);
if (ctl->panel_data->panel_info.is_split_display)
mutex_unlock(&cmd_clk_mtx);
}
return 0;
}
static int mdss_mdp_cmd_remove_vsync_handler(struct mdss_mdp_ctl *ctl,
struct mdss_mdp_vsync_handler *handle)
{
struct mdss_mdp_ctl *sctl;
struct mdss_mdp_cmd_ctx *ctx, *sctx = NULL;
unsigned long flags;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("%s: invalid ctx\n", __func__);
return -ENODEV;
}
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled, 0x88888);
sctl = mdss_mdp_get_split_ctl(ctl);
if (sctl)
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
spin_lock_irqsave(&ctx->clk_lock, flags);
if (handle->enabled) {
handle->enabled = false;
list_del_init(&handle->list);
if (!handle->cmd_post_flush) {
if (ctx->vsync_enabled) {
ctx->vsync_enabled--;
if (sctx)
sctx->vsync_enabled--;
}
else
WARN(1, "unbalanced vsync disable");
}
}
spin_unlock_irqrestore(&ctx->clk_lock, flags);
return 0;
}
int mdss_mdp_cmd_reconfigure_splash_done(struct mdss_mdp_ctl *ctl, bool handoff)
{
struct mdss_panel_data *pdata;
struct mdss_mdp_ctl *sctl = mdss_mdp_get_split_ctl(ctl);
int ret = 0;
pdata = ctl->panel_data;
#if defined(CONFIG_FB_MSM_MDSS_SAMSUNG)
/* Turning off panel - mdp to initialize panel init-seq at kick-off*/
mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_BLANK, NULL);
mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_PANEL_OFF, NULL);
#endif
mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_PANEL_CLK_CTRL, (void *)0);
pdata->panel_info.cont_splash_enabled = 0;
if (sctl)
sctl->panel_data->panel_info.cont_splash_enabled = 0;
else if (pdata->next && is_pingpong_split(ctl->mfd))
pdata->next->panel_info.cont_splash_enabled = 0;
return ret;
}
static int mdss_mdp_cmd_wait4pingpong(struct mdss_mdp_ctl *ctl, void *arg)
{
struct mdss_mdp_cmd_ctx *ctx;
struct mdss_panel_data *pdata;
unsigned long flags;
int rc = 0;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
pdata = ctl->panel_data;
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled, ctl->roi_bkup.w,
ctl->roi_bkup.h);
pr_debug("%s: intf_num=%d ctx=%pK koff_cnt=%d\n", __func__,
ctl->intf_num, ctx, atomic_read(&ctx->koff_cnt));
rc = wait_event_timeout(ctx->pp_waitq,
atomic_read(&ctx->koff_cnt) == 0,
KOFF_TIMEOUT);
trace_mdp_cmd_wait_pingpong(ctl->num,
atomic_read(&ctx->koff_cnt));
if (rc <= 0) {
u32 status, mask;
mask = BIT(MDSS_MDP_IRQ_PING_PONG_COMP + ctx->pp_num);
status = mask & readl_relaxed(ctl->mdata->mdp_base +
MDSS_MDP_REG_INTR_STATUS);
if (status) {
pr_warn_once("pp done but irq not triggered\n");
mdss_mdp_irq_clear(ctl->mdata,
MDSS_MDP_IRQ_PING_PONG_COMP,
ctx->pp_num);
local_irq_save(flags);
mdss_mdp_cmd_pingpong_done(ctl);
local_irq_restore(flags);
rc = 1;
}
rc = atomic_read(&ctx->koff_cnt) == 0;
}
if (rc <= 0) {
if (ctx->pp_timeout_report_cnt == 0) {
pr_warn_once("cmd kickoff timed out (%d) ctl=%d\n", rc, ctl->num);
MDSS_XLOG_TOUT_HANDLER("mdp", "dsi0_ctrl", "dsi0_phy",
"dsi1_ctrl", "dsi1_phy", "panic");
mdss_fb_report_panel_dead(ctl->mfd);
} else if (ctx->pp_timeout_report_cnt == MAX_RECOVERY_TRIALS) {
pr_warn_once("cmd kickoff timed out (%d) ctl=%d\n", rc, ctl->num);
MDSS_XLOG_TOUT_HANDLER("mdp", "dsi0_ctrl", "dsi0_phy",
"dsi1_ctrl", "dsi1_phy", "panic");
mdss_fb_report_panel_dead(ctl->mfd);
}
ctx->pp_timeout_report_cnt++;
rc = -EPERM;
if (atomic_add_unless(&ctx->koff_cnt, -1, 0)
&& mdss_mdp_cmd_do_notifier(ctx))
mdss_mdp_ctl_notify(ctl, MDP_NOTIFY_FRAME_TIMEOUT);
} else {
rc = 0;
ctx->pp_timeout_report_cnt = 0;
}
cancel_work_sync(&ctx->pp_done_work);
/* signal any pending ping pong done events */
while (atomic_add_unless(&ctx->pp_done_cnt, -1, 0))
mdss_mdp_ctl_notify(ctx->ctl, MDP_NOTIFY_FRAME_DONE);
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled, rc);
return rc;
}
static int mdss_mdp_cmd_do_notifier(struct mdss_mdp_cmd_ctx *ctx)
{
struct mdss_mdp_cmd_ctx *sctx;
sctx = ctx->sync_ctx;
if (!sctx || atomic_read(&sctx->koff_cnt) == 0)
return 1;
return 0;
}
static void mdss_mdp_cmd_set_sync_ctx(
struct mdss_mdp_ctl *ctl, struct mdss_mdp_ctl *sctl)
{
struct mdss_mdp_cmd_ctx *ctx, *sctx;
ctx = (struct mdss_mdp_cmd_ctx *)ctl->intf_ctx[MASTER_CTX];
if (!sctl) {
ctx->sync_ctx = NULL;
return;
}
sctx = (struct mdss_mdp_cmd_ctx *)sctl->intf_ctx[MASTER_CTX];
if (!sctl->roi.w && !sctl->roi.h) {
/* left only */
ctx->sync_ctx = NULL;
sctx->sync_ctx = NULL;
} else {
/* left + right */
ctx->sync_ctx = sctx;
sctx->sync_ctx = ctx;
}
}
static int mdss_mdp_cmd_set_partial_roi(struct mdss_mdp_ctl *ctl)
{
int rc = 0;
if (!ctl->panel_data->panel_info.partial_update_supported)
return rc;
/* set panel col and page addr */
rc = mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_ENABLE_PARTIAL_ROI, NULL);
return rc;
}
static int mdss_mdp_cmd_set_stream_size(struct mdss_mdp_ctl *ctl)
{
int rc = 0;
if (!ctl->panel_data->panel_info.partial_update_supported)
return rc;
/* set dsi controller stream size */
rc = mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_DSI_STREAM_SIZE, NULL);
return rc;
}
static int mdss_mdp_cmd_panel_on(struct mdss_mdp_ctl *ctl,
struct mdss_mdp_ctl *sctl)
{
struct mdss_mdp_cmd_ctx *ctx, *sctx = NULL;
int rc = 0;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
if (sctl)
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
if (!__mdss_mdp_cmd_is_panel_power_on_interactive(ctx)) {
rc = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_LINK_READY, NULL);
WARN(rc, "intf %d link ready error (%d)\n", ctl->intf_num, rc);
rc = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_UNBLANK, NULL);
WARN(rc, "intf %d unblank error (%d)\n", ctl->intf_num, rc);
rc = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_PANEL_ON, NULL);
WARN(rc, "intf %d panel on error (%d)\n", ctl->intf_num, rc);
rc = mdss_mdp_tearcheck_enable(ctl, true);
WARN(rc, "intf %d tearcheck enable error (%d)\n",
ctl->intf_num, rc);
ctx->panel_power_state = MDSS_PANEL_POWER_ON;
if (sctx)
sctx->panel_power_state = MDSS_PANEL_POWER_ON;
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_RECOVERY_HANDLER,
(void *)&ctx->intf_recovery);
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_MDP_CALLBACK,
(void *)&ctx->intf_mdp_callback);
ctx->intf_stopped = 0;
if (sctx)
sctx->intf_stopped = 0;
/*Following change was suggested via QC Case #02445981 for proper sync between first frame tx and TE.
"kick off an image after getting the first TE signal to get a proper timing"*/
pr_debug("%s: add delay to wait 1st TE to come!", __func__);
mdelay(20); // delay 16ms for TE signal to come, it will reset MDP te logic rdptr, added 4ms for margin
} else {
pr_err("%s: Panel already on\n", __func__);
}
return rc;
}
static int __mdss_mdp_cmd_configure_autorefresh(struct mdss_mdp_ctl *ctl, int
frame_cnt, bool delayed)
{
struct mdss_mdp_cmd_ctx *ctx;
bool enable = frame_cnt ? true : false;
if (!ctl || !ctl->mixer_left) {
pr_err("invalid ctl structure\n");
return -ENODEV;
}
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
if (frame_cnt == ctl->autorefresh_frame_cnt) {
pr_debug("No change to the refresh count\n");
return 0;
}
pr_debug("%s enable = %d frame_cnt = %d init=%d\n", __func__,
enable, frame_cnt, ctx->autorefresh_init);
mutex_lock(&ctx->autorefresh_mtx);
if (enable) {
if (delayed) {
ctx->autorefresh_pending_frame_cnt = frame_cnt;
} else {
if (!ctx->autorefresh_init) {
ctx->autorefresh_init = true;
mdss_mdp_cmd_clk_on(ctx);
}
mdss_mdp_pingpong_write(ctl->mixer_left->pingpong_base,
MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG,
BIT(31) | frame_cnt);
/*
* This manual kickoff is needed to actually start the
* autorefresh feature. The h/w relies on one commit
* before it starts counting the read ptrs to trigger
* the frames.
*/
mdss_mdp_ctl_write(ctl, MDSS_MDP_REG_CTL_START, 1);
ctl->autorefresh_frame_cnt = frame_cnt;
ctl->cmd_autorefresh_en = true;
}
} else {
if (ctx->autorefresh_init) {
/*
* Safe to turn off the feature. The clocks will be on
* at this time since the feature was enabled.
*/
mdss_mdp_pingpong_write(ctl->mixer_left->pingpong_base,
MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG, 0);
}
ctx->autorefresh_init = false;
ctx->autorefresh_pending_frame_cnt = 0;
ctx->autorefresh_off_pending = true;
ctl->autorefresh_frame_cnt = 0;
ctl->cmd_autorefresh_en = false;
}
mutex_unlock(&ctx->autorefresh_mtx);
return 0;
}
/*
* This function will be called from the sysfs node to enable and disable the
* feature.
*/
int mdss_mdp_cmd_set_autorefresh_mode(struct mdss_mdp_ctl *ctl, int frame_cnt)
{
return __mdss_mdp_cmd_configure_autorefresh(ctl, frame_cnt, true);
}
/*
* This function is called from the commit thread. This function will check if
* there was are any pending requests from the sys fs node for the feature and
* if so then it will enable in the h/w.
*/
static int mdss_mdp_cmd_enable_cmd_autorefresh(struct mdss_mdp_ctl *ctl,
int frame_cnt)
{
return __mdss_mdp_cmd_configure_autorefresh(ctl, frame_cnt, false);
}
/*
* There are 3 partial update possibilities
* left only ==> enable left pingpong_done
* left + right ==> enable both pingpong_done
* right only ==> enable right pingpong_done
*
* notification is triggered at pingpong_done which will
* signal timeline to release source buffer
*
* for left+right case, pingpong_done is enabled for both and
* only the last pingpong_done should trigger the notification
*/
int mdss_mdp_cmd_kickoff(struct mdss_mdp_ctl *ctl, void *arg)
{
struct mdss_mdp_ctl *sctl = NULL;
struct mdss_mdp_cmd_ctx *ctx, *sctx = NULL;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
if (ctx->intf_stopped) {
pr_err("ctx=%d stopped already\n", ctx->pp_num);
return -EPERM;
}
INIT_COMPLETION(ctx->readptr_done);
/* sctl will be null for right only in the case of Partial update */
sctl = mdss_mdp_get_split_ctl(ctl);
if (sctl && (sctl->roi.w == 0 || sctl->roi.h == 0)) {
/* left update only */
sctl = NULL;
}
mdss_mdp_ctl_perf_set_transaction_status(ctl,
PERF_HW_MDP_STATE, PERF_STATUS_BUSY);
if (sctl) {
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
mdss_mdp_ctl_perf_set_transaction_status(sctl,
PERF_HW_MDP_STATE, PERF_STATUS_BUSY);
}
/*
* Turn on the panel, if not already. This is because the panel is
* turned on only when we send the first frame and not during cmd
* start. This is to ensure that no artifacts are seen on the panel.
*/
if (__mdss_mdp_cmd_is_panel_power_off(ctx))
mdss_mdp_cmd_panel_on(ctl, sctl);
MDSS_XLOG(ctl->num, ctl->roi.x, ctl->roi.y, ctl->roi.w,
ctl->roi.h);
atomic_inc(&ctx->koff_cnt);
if (sctx)
atomic_inc(&sctx->koff_cnt);
trace_mdp_cmd_kickoff(ctl->num, atomic_read(&ctx->koff_cnt));
mdss_mdp_cmd_clk_on(ctx);
mdss_mdp_cmd_set_partial_roi(ctl);
/*
* tx dcs command if had any
*/
mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_DSI_CMDLIST_KOFF, NULL);
mdss_mdp_cmd_set_stream_size(ctl);
mdss_mdp_cmd_set_sync_ctx(ctl, sctl);
if (ctx->autorefresh_init || ctx->autorefresh_off_pending) {
/*
* If autorefresh is enabled then do not queue the frame till
* the next read ptr is done otherwise we might get a pp done
* immediately for the past autorefresh frame instead.
*/
pr_debug("Wait for read pointer done before enabling PP irq\n");
wait_for_completion(&ctx->readptr_done);
mdss_mdp_cmd_clk_on(ctx);
}
mdss_mdp_irq_enable(MDSS_MDP_IRQ_PING_PONG_COMP, ctx->pp_num);
if (sctx)
mdss_mdp_irq_enable(MDSS_MDP_IRQ_PING_PONG_COMP, sctx->pp_num);
if (!ctx->autorefresh_pending_frame_cnt && !ctl->cmd_autorefresh_en) {
/* Kickoff */
mdss_mdp_ctl_write(ctl, MDSS_MDP_REG_CTL_START, 1);
} else {
pr_debug("Enabling autorefresh in hardware.\n");
mdss_mdp_cmd_enable_cmd_autorefresh(ctl,
ctx->autorefresh_pending_frame_cnt);
}
mdss_mdp_ctl_perf_set_transaction_status(ctl,
PERF_SW_COMMIT_STATE, PERF_STATUS_DONE);
if (sctl) {
mdss_mdp_ctl_perf_set_transaction_status(sctl,
PERF_SW_COMMIT_STATE, PERF_STATUS_DONE);
}
mb();
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
return 0;
}
int mdss_mdp_cmd_restore(struct mdss_mdp_ctl *ctl)
{
pr_debug("%s: called for ctl%d\n", __func__, ctl->num);
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
if (mdss_mdp_cmd_tearcheck_setup(ctl->intf_ctx[MASTER_CTX]))
pr_warn("%s: tearcheck setup failed\n", __func__);
else
mdss_mdp_tearcheck_enable(ctl, true);
mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
return 0;
}
int mdss_mdp_cmd_ctx_stop(struct mdss_mdp_ctl *ctl,
struct mdss_mdp_cmd_ctx *ctx, int panel_power_state,
bool pend_switch)
{
struct mdss_mdp_cmd_ctx *sctx = NULL;
struct mdss_mdp_ctl *sctl = NULL;
unsigned long flags;
unsigned long sflags;
int need_wait = 0;
int hz;
sctl = mdss_mdp_get_split_ctl(ctl);
if (sctl)
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
/* intf stopped, no more kickoff */
ctx->intf_stopped = 1;
spin_lock_irqsave(&ctx->clk_lock, flags);
if (ctx->rdptr_enabled) {
INIT_COMPLETION(ctx->stop_comp);
need_wait = 1;
/*
* clk off at next vsync after pp_done OR
* next vsync if there has no kickoff pending
*/
ctx->rdptr_enabled = 1;
if (sctx) {
spin_lock_irqsave(&sctx->clk_lock, sflags);
if (sctx->rdptr_enabled)
sctx->rdptr_enabled = 1;
spin_unlock_irqrestore(&sctx->clk_lock, sflags);
}
}
spin_unlock_irqrestore(&ctx->clk_lock, flags);
if (need_wait) {
hz = mdss_panel_get_framerate(&ctl->panel_data->panel_info);
if (wait_for_completion_timeout(&ctx->stop_comp,
STOP_TIMEOUT(hz)) <= 0) {
WARN(1, "stop cmd time out\n");
mdss_mdp_irq_disable(MDSS_MDP_IRQ_PING_PONG_RD_PTR,
ctx->pp_num);
ctx->rdptr_enabled = 0;
atomic_set(&ctx->koff_cnt, 0);
}
}
if (cancel_work_sync(&ctx->clk_work))
pr_debug("no pending clk work\n");
if (!pend_switch) {
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_RECOVERY_HANDLER,
NULL);
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_MDP_CALLBACK,
NULL);
}
mdss_mdp_cmd_clk_off(ctx);
flush_work(&ctx->pp_done_work);
if (mdss_panel_is_power_off(panel_power_state) ||
mdss_panel_is_power_on_ulp(panel_power_state))
mdss_mdp_tearcheck_enable(ctl, false);
if (mdss_panel_is_power_on(panel_power_state)) {
pr_debug("%s: intf stopped with panel on\n", __func__);
return 0;
}
mdss_mdp_set_intr_callback(MDSS_MDP_IRQ_PING_PONG_RD_PTR,
ctx->pp_num, NULL, NULL);
mdss_mdp_set_intr_callback(MDSS_MDP_IRQ_PING_PONG_COMP,
ctx->pp_num, NULL, NULL);
memset(ctx, 0, sizeof(*ctx));
return 0;
}
int mdss_mdp_cmd_intfs_stop(struct mdss_mdp_ctl *ctl, int session,
int panel_power_state, bool pend_switch)
{
struct mdss_mdp_cmd_ctx *ctx;
if (session >= MAX_SESSIONS)
return 0;
ctx = ctl->intf_ctx[MASTER_CTX];
if (!ctx->ref_cnt) {
pr_err("invalid ctx session: %d\n", session);
return -ENODEV;
}
mdss_mdp_cmd_ctx_stop(ctl, ctx, panel_power_state, pend_switch);
if (is_pingpong_split(ctl->mfd)) {
session += 1;
if (session >= MAX_SESSIONS)
return 0;
ctx = ctl->intf_ctx[SLAVE_CTX];
if (!ctx->ref_cnt) {
pr_err("invalid ctx session: %d\n", session);
return -ENODEV;
}
mdss_mdp_cmd_ctx_stop(ctl, ctx, panel_power_state, pend_switch);
}
pr_debug("%s:-\n", __func__);
return 0;
}
static int mdss_mdp_cmd_stop_sub(struct mdss_mdp_ctl *ctl,
int panel_power_state, bool pend_switch)
{
struct mdss_mdp_cmd_ctx *ctx;
struct mdss_mdp_vsync_handler *tmp, *handle;
int session;
ctx = (struct mdss_mdp_cmd_ctx *) ctl->intf_ctx[MASTER_CTX];
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
list_for_each_entry_safe(handle, tmp, &ctx->vsync_handlers, list)
mdss_mdp_cmd_remove_vsync_handler(ctl, handle);
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled, XLOG_FUNC_ENTRY);
/* Command mode is supported only starting at INTF1 */
session = ctl->intf_num - MDSS_MDP_INTF1;
return mdss_mdp_cmd_intfs_stop(ctl, session, panel_power_state,
pend_switch);
}
int mdss_mdp_cmd_stop(struct mdss_mdp_ctl *ctl, int panel_power_state)
{
struct mdss_mdp_cmd_ctx *ctx = ctl->intf_ctx[MASTER_CTX];
struct mdss_mdp_cmd_ctx *sctx = NULL;
struct mdss_mdp_ctl *sctl = mdss_mdp_get_split_ctl(ctl);
bool panel_off = false;
bool turn_off_clocks = false;
bool send_panel_events = false;
bool pend_switch = false;
int ret = 0;
if (!ctx) {
pr_err("invalid ctx\n");
return -ENODEV;
}
if (__mdss_mdp_cmd_is_panel_power_off(ctx)) {
pr_debug("%s: panel already off\n", __func__);
return 0;
}
if (ctx->panel_power_state == panel_power_state) {
pr_debug("%s: no transition needed %d --> %d\n", __func__,
ctx->panel_power_state, panel_power_state);
return 0;
}
pr_debug("%s: transition from %d --> %d\n", __func__,
ctx->panel_power_state, panel_power_state);
if (sctl)
sctx = (struct mdss_mdp_cmd_ctx *) sctl->intf_ctx[MASTER_CTX];
if (ctl->cmd_autorefresh_en) {
int pre_suspend = ctx->autorefresh_pending_frame_cnt;
mdss_mdp_cmd_enable_cmd_autorefresh(ctl, 0);
ctx->autorefresh_pending_frame_cnt = pre_suspend;
}
mutex_lock(&ctl->offlock);
if (mdss_panel_is_power_off(panel_power_state)) {
/* Transition to display off */
send_panel_events = true;
turn_off_clocks = true;
panel_off = true;
} else if (__mdss_mdp_cmd_is_panel_power_on_interactive(ctx)) {
/*
* If we are transitioning from interactive to low
* power, then we need to send events to the interface
* so that the panel can be configured in low power
* mode.
*/
send_panel_events = true;
if (mdss_panel_is_power_on_ulp(panel_power_state))
turn_off_clocks = true;
} else {
/* Transitions between low power and ultra low power */
if (mdss_panel_is_power_on_ulp(panel_power_state)) {
/*
* If we are transitioning from low power to ultra low
* power mode, no more display updates are expected.
* Turn off the interface clocks.
*/
pr_debug("%s: turn off clocks\n", __func__);
turn_off_clocks = true;
} else {
/*
* Transition from ultra low power to low power does
* not require any special handling. Just rest the
* intf_stopped flag so that the clocks would
* get turned on when the first update comes.
*/
pr_debug("%s: reset intf_stopped flag.\n", __func__);
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_MDP_CALLBACK,
(void *)&ctx->intf_mdp_callback);
ctx->intf_stopped = 0;
if (sctx)
sctx->intf_stopped = 0;
/*
* Tearcheck was disabled while entering LP2 state.
* Enable it back to allow updates in LP1 state.
*/
mdss_mdp_tearcheck_enable(ctl, true);
goto end;
}
}
if (!turn_off_clocks)
goto panel_events;
if (ctx->pending_mode_switch) {
pend_switch = true;
send_panel_events = false;
ctx->pending_mode_switch = 0;
}
pr_debug("%s: turn off interface clocks\n", __func__);
ret = mdss_mdp_cmd_stop_sub(ctl, panel_power_state, pend_switch);
if (IS_ERR_VALUE(ret)) {
pr_err("%s: unable to stop interface: %d\n",
__func__, ret);
goto end;
}
if (sctl) {
mdss_mdp_cmd_stop_sub(sctl, panel_power_state, pend_switch);
if (IS_ERR_VALUE(ret)) {
pr_err("%s: unable to stop slave intf: %d\n",
__func__, ret);
goto end;
}
}
panel_events:
if ((!is_panel_split(ctl->mfd) || is_pingpong_split(ctl->mfd) ||
(is_panel_split(ctl->mfd) && sctl)) && send_panel_events) {
pr_debug("%s: send panel events\n", __func__);
ret = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_BLANK,
(void *) (long int) panel_power_state);
WARN(ret, "intf %d unblank error (%d)\n", ctl->intf_num, ret);
ret = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_PANEL_OFF,
(void *) (long int) panel_power_state);
WARN(ret, "intf %d unblank error (%d)\n", ctl->intf_num, ret);
}
if (!panel_off) {
pr_debug("%s: cmd_stop with panel always on\n", __func__);
goto end;
}
pr_debug("%s: turn off panel\n", __func__);
ctl->intf_ctx[MASTER_CTX] = NULL;
ctl->intf_ctx[SLAVE_CTX] = NULL;
ctl->ops.stop_fnc = NULL;
ctl->ops.display_fnc = NULL;
ctl->ops.wait_pingpong = NULL;
ctl->ops.add_vsync_handler = NULL;
ctl->ops.remove_vsync_handler = NULL;
end:
if (!IS_ERR_VALUE(ret))
ctx->panel_power_state = panel_power_state;
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled, XLOG_FUNC_EXIT);
mutex_unlock(&ctl->offlock);
pr_debug("%s:-\n", __func__);
return ret;
}
static int mdss_mdp_cmd_ctx_setup(struct mdss_mdp_ctl *ctl,
struct mdss_mdp_cmd_ctx *ctx, int pp_num,
int pingpong_split_slave)
{
int ret = 0;
ctx->ctl = ctl;
ctx->pp_num = pp_num;
ctx->pingpong_split_slave = pingpong_split_slave;
ctx->pp_timeout_report_cnt = 0;
init_waitqueue_head(&ctx->pp_waitq);
init_waitqueue_head(&ctx->rdptr_waitq);
init_completion(&ctx->stop_comp);
init_completion(&ctx->readptr_done);
spin_lock_init(&ctx->clk_lock);
spin_lock_init(&ctx->koff_lock);
mutex_init(&ctx->clk_mtx);
mutex_init(&ctx->autorefresh_mtx);
INIT_WORK(&ctx->clk_work, clk_ctrl_work);
INIT_WORK(&ctx->pp_done_work, pingpong_done_work);
atomic_set(&ctx->pp_done_cnt, 0);
ctx->autorefresh_off_pending = false;
ctx->autorefresh_init = false;
INIT_LIST_HEAD(&ctx->vsync_handlers);
ctx->intf_recovery.fxn = mdss_mdp_cmd_intf_recovery;
ctx->intf_recovery.data = ctx;
ctx->intf_mdp_callback.fxn = mdss_mdp_cmd_intf_callback;
ctx->intf_mdp_callback.data = ctx;
ctx->intf_stopped = 0;
pr_debug("%s: ctx=%pK num=%d\n", __func__, ctx, ctx->pp_num);
MDSS_XLOG(ctl->num, atomic_read(&ctx->koff_cnt), ctx->clk_enabled,
ctx->rdptr_enabled);
mdss_mdp_ctl_intf_event(ctl,
MDSS_EVENT_REGISTER_RECOVERY_HANDLER,
(void *)&ctx->intf_recovery);
mdss_mdp_set_intr_callback(MDSS_MDP_IRQ_PING_PONG_RD_PTR,
ctx->pp_num, mdss_mdp_cmd_readptr_done, ctl);
mdss_mdp_set_intr_callback(MDSS_MDP_IRQ_PING_PONG_COMP, ctx->pp_num,
mdss_mdp_cmd_pingpong_done, ctl);
ret = mdss_mdp_cmd_tearcheck_setup(ctx);
if (ret)
pr_err("tearcheck setup failed\n");
return ret;
}
static int mdss_mdp_cmd_intfs_setup(struct mdss_mdp_ctl *ctl,
int session)
{
struct mdss_mdp_cmd_ctx *ctx;
struct mdss_mdp_ctl *sctl = NULL;
struct mdss_mdp_mixer *mixer;
int ret;
if (session >= MAX_SESSIONS)
return 0;
sctl = mdss_mdp_get_split_ctl(ctl);
ctx = &mdss_mdp_cmd_ctx_list[session];
if (ctx->ref_cnt) {
if (mdss_panel_is_power_on(ctx->panel_power_state)) {
pr_debug("%s: cmd_start with panel always on\n",
__func__);
/*
* It is possible that the resume was called from the
* panel always on state without MDSS every
* power-collapsed (such as a case with any other
* interfaces connected). In such cases, we need to
* explictly call the restore function to enable
* tearcheck logic.
*/
mdss_mdp_cmd_restore(ctl);
/* Turn on panel so that it can exit low power mode */
return mdss_mdp_cmd_panel_on(ctl, sctl);
} else {
pr_err("Intf %d already in use\n", session);
return -EBUSY;
}
}
ctx->ref_cnt++;
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (!mixer) {
pr_err("mixer not setup correctly\n");
return -ENODEV;
}
ctl->intf_ctx[MASTER_CTX] = ctx;
/*
* pp_num for master ctx is same as mixer num independent
* of pingpong split enabled/disabled
*/
ret = mdss_mdp_cmd_ctx_setup(ctl, ctx, mixer->num, false);
if (ret) {
pr_err("mdss_mdp_cmd_ctx_setup failed for ping ping: %d\n",
mixer->num);
ctx->ref_cnt--;
return -ENODEV;
}
if (is_pingpong_split(ctl->mfd)) {
session += 1;
if (session >= MAX_SESSIONS)
return 0;
ctx = &mdss_mdp_cmd_ctx_list[session];
if (ctx->ref_cnt) {
if (mdss_panel_is_power_on(ctx->panel_power_state)) {
pr_debug("%s: cmd_start with panel always on\n",
__func__);
mdss_mdp_cmd_restore(ctl);
return mdss_mdp_cmd_panel_on(ctl, sctl);
} else {
pr_err("Intf %d already in use\n", session);
return -EBUSY;
}
}
ctx->ref_cnt++;
ctl->intf_ctx[SLAVE_CTX] = ctx;
ret = mdss_mdp_cmd_ctx_setup(ctl, ctx, session, true);
if (ret) {
pr_err("mdss_mdp_cmd_ctx_setup failed for slave ping pong block");
ctx->ref_cnt--;
return -EPERM;
}
}
return 0;
}
void mdss_mdp_switch_roi_reset(struct mdss_mdp_ctl *ctl)
{
struct mdss_mdp_ctl *sctl = mdss_mdp_get_split_ctl(ctl);
if (!ctl->panel_data ||
!ctl->panel_data->panel_info.partial_update_supported)
return;
ctl->panel_data->panel_info.roi = ctl->roi;
if (sctl && sctl->panel_data)
sctl->panel_data->panel_info.roi = sctl->roi;
mdss_mdp_cmd_set_partial_roi(ctl);
}
void mdss_mdp_switch_to_vid_mode(struct mdss_mdp_ctl *ctl, int prep)
{
struct mdss_mdp_cmd_ctx *ctx = ctl->intf_ctx[MASTER_CTX];
long int mode = MIPI_VIDEO_PANEL;
int rc = 0;
pr_debug("%s start, prep = %d\n", __func__, prep);
if (prep) {
/*
* In dsi_on there is an explicit decrement to dsi clk refcount
* if we are in cmd mode. We need to rebalance clock in order
* to properly enable vid mode compnents
*/
rc = mdss_mdp_ctl_intf_event
(ctl, MDSS_EVENT_PANEL_CLK_CTRL, (void *)1);
ctx->pending_mode_switch = 1;
return;
}
mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_DSI_RECONFIG_CMD,
(void *) mode);
}
int mdss_mdp_cmd_start(struct mdss_mdp_ctl *ctl)
{
int ret, session = 0;
pr_debug("%s:+\n", __func__);
/* Command mode is supported only starting at INTF1 */
session = ctl->intf_num - MDSS_MDP_INTF1;
ret = mdss_mdp_cmd_intfs_setup(ctl, session);
if (IS_ERR_VALUE(ret)) {
pr_err("unable to set cmd interface: %d\n", ret);
return ret;
}
ctl->ops.stop_fnc = mdss_mdp_cmd_stop;
ctl->ops.display_fnc = mdss_mdp_cmd_kickoff;
ctl->ops.wait_pingpong = mdss_mdp_cmd_wait4pingpong;
ctl->ops.add_vsync_handler = mdss_mdp_cmd_add_vsync_handler;
ctl->ops.remove_vsync_handler = mdss_mdp_cmd_remove_vsync_handler;
ctl->ops.read_line_cnt_fnc = mdss_mdp_cmd_line_count;
ctl->ops.restore_fnc = mdss_mdp_cmd_restore;
pr_debug("%s:-\n", __func__);
return 0;
}
Reference in New Issue View Git Blame Copy Permalink