blob: 87a350eac441e2f7190acbdf85073fd68d8e54ab [file] [log] [blame]
/* Copyright (c) 2016-2017, 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.
*
*/
#define pr_fmt(fmt) "[sde_rsc_hw:%s:%d]: " fmt, __func__, __LINE__
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include "sde_rsc_priv.h"
/* display rsc offset */
#define SDE_RSCC_PDC_SEQ_START_ADDR_REG_OFFSET_DRV0 0x020
#define SDE_RSCC_PDC_MATCH_VALUE_LO_REG_OFFSET_DRV0 0x024
#define SDE_RSCC_PDC_MATCH_VALUE_HI_REG_OFFSET_DRV0 0x028
#define SDE_RSCC_PDC_SLAVE_ID_DRV0 0x02c
#define SDE_RSCC_SEQ_CFG_BR_ADDR_0_DRV0 0x410
#define SDE_RSCC_SEQ_CFG_BR_ADDR_1_DRV0 0x414
#define SDE_RSCC_SEQ_MEM_0_DRV0 0x600
#define SDE_RSCC_SOLVER_OVERRIDE_CTRL_DRV0 0xc14
#define SDE_RSCC_ERROR_IRQ_STATUS_DRV0 0x0d0
#define SDE_RSCC_SEQ_BUSY_DRV0 0x404
#define SDE_RSCC_SOLVER_STATUS0_DRV0 0xc24
#define SDE_RSCC_SOLVER_STATUS1_DRV0 0xc28
#define SDE_RSCC_SOLVER_STATUS2_DRV0 0xc2c
#define SDE_RSCC_AMC_TCS_MODE_IRQ_STATUS_DRV0 0x1c00
#define SDE_RSCC_SOFT_WAKEUP_TIME_LO_DRV0 0xc04
#define SDE_RSCC_SOFT_WAKEUP_TIME_HI_DRV0 0xc08
#define SDE_RSCC_MAX_IDLE_DURATION_DRV0 0xc0c
#define SDE_RSC_SOLVER_TIME_SLOT_TABLE_0_DRV0 0x1000
#define SDE_RSC_SOLVER_TIME_SLOT_TABLE_1_DRV0 0x1004
#define SDE_RSC_SOLVER_TIME_SLOT_TABLE_2_DRV0 0x1008
#define SDE_RSC_SOLVER_TIME_SLOT_TABLE_3_DRV0 0x100c
#define SDE_RSC_SOLVER_SOLVER_MODES_ENABLED_DRV0 0xc20
#define SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT0_PRI0_DRV0 0x1080
#define SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT1_PRI0_DRV0 0x1100
#define SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT1_PRI3_DRV0 0x110c
#define SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT2_PRI0_DRV0 0x1180
#define SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT2_PRI3_DRV0 0x118c
#define SDE_RSC_SOLVER_OVERRIDE_MODE_DRV0 0xc18
#define SDE_RSC_SOLVER_OVERRIDE_CTRL_DRV0 0xc14
#define SDE_RSC_TIMERS_CONSIDERED_DRV0 0xc00
#define SDE_RSC_SOLVER_OVERRIDE_IDLE_TIME_DRV0 0xc1c
#define SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE0 0xc30
#define SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE0 0xc34
#define SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE0 0xc38
#define SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE0 0xc40
#define SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE1 0xc4c
#define SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE1 0xc50
#define SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE1 0xc54
#define SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE1 0xc5c
#define SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE2 0xc68
#define SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE2 0xc6c
#define SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE2 0xc70
#define SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE2 0xc78
#define SDE_RSCC_TCS_DRV0_CONTROL 0x1c14
#define SDE_RSCC_WRAPPER_CTRL 0x000
#define SDE_RSCC_WRAPPER_OVERRIDE_CTRL 0x004
#define SDE_RSCC_WRAPPER_STATIC_WAKEUP_0 0x008
#define SDE_RSCC_WRAPPER_RSCC_MODE_THRESHOLD 0x00c
#define SDE_RSCC_WRAPPER_DEBUG_BUS 0x010
#define SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP0 0x018
#define SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP1 0x01c
#define SDE_RSCC_SPARE_PWR_EVENT 0x020
#define SDE_RSCC_PWR_CTRL 0x024
/* qtimer offset */
#define SDE_RSCC_QTMR_AC_HW_FRAME_SEL_1 0x1FE0
#define SDE_RSCC_QTMR_AC_HW_FRAME_SEL_2 0x1FF0
#define SDE_RSCC_QTMR_AC_CNTACR0_FG0 0x1040
#define SDE_RSCC_QTMR_AC_CNTACR1_FG0 0x1044
#define SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_LO 0x2020
#define SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_HI 0x2024
#define SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_LO 0x3020
#define SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_HI 0x3024
#define SDE_RSCC_F0_QTMR_V1_CNTP_CTL 0x202C
#define SDE_RSCC_F1_QTMR_V1_CNTP_CTL 0x302C
#define MAX_CHECK_LOOPS 500
#define POWER_CTRL_BIT_12 12
static void rsc_event_trigger(struct sde_rsc_priv *rsc, uint32_t event_type)
{
struct sde_rsc_event *event;
list_for_each_entry(event, &rsc->event_list, list)
if (event->event_type & event_type)
event->cb_func(event_type, event->usr);
}
static int rsc_hw_qtimer_init(struct sde_rsc_priv *rsc)
{
pr_debug("rsc hardware qtimer init\n");
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_QTMR_AC_HW_FRAME_SEL_1,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_QTMR_AC_HW_FRAME_SEL_2,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_QTMR_AC_CNTACR0_FG0,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_QTMR_AC_CNTACR1_FG0,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_LO,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_HI,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_LO,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_HI,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F0_QTMR_V1_CNTP_CTL,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F1_QTMR_V1_CNTP_CTL,
0x1, rsc->debug_mode);
return 0;
}
static int rsc_hw_pdc_init(struct sde_rsc_priv *rsc)
{
pr_debug("rsc hardware pdc init\n");
dss_reg_w(&rsc->drv_io, SDE_RSCC_PDC_SEQ_START_ADDR_REG_OFFSET_DRV0,
0x4520, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_PDC_MATCH_VALUE_LO_REG_OFFSET_DRV0,
0x4510, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_PDC_MATCH_VALUE_HI_REG_OFFSET_DRV0,
0x4514, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_PDC_SLAVE_ID_DRV0,
0x1, rsc->debug_mode);
return 0;
}
static int rsc_hw_wrapper_init(struct sde_rsc_priv *rsc)
{
pr_debug("rsc hardware wrapper init\n");
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_STATIC_WAKEUP_0,
rsc->timer_config.static_wakeup_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_RSCC_MODE_THRESHOLD,
rsc->timer_config.rsc_mode_threshold_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
BIT(8), rsc->debug_mode);
return 0;
}
static int rsc_hw_seq_memory_init(struct sde_rsc_priv *rsc)
{
pr_debug("rsc sequencer memory init\n");
/* Mode - 0 sequence */
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x0,
0xe0a88bab, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x4,
0x8babec39, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x8,
0x8bab2088, rsc->debug_mode);
/* Mode - 1 sequence */
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0xc,
0x39e038a8, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x10,
0x888babec, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x14,
0xa806a020, rsc->debug_mode);
/* Mode - 2 sequence */
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x18,
0xa138ebaa, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x1c,
0xaca581e1, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x20,
0xe2a2ede0, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x24,
0xea8a3982, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x28,
0xa920888c, rsc->debug_mode);
/* tcs sleep sequence */
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x2c,
0x89e6a6e9, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x30,
0xa7e9a920, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_MEM_0_DRV0 + 0x34,
0x002089e7, rsc->debug_mode);
/* branch address */
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_CFG_BR_ADDR_0_DRV0,
0x2b, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SEQ_CFG_BR_ADDR_1_DRV0,
0x31, rsc->debug_mode);
return 0;
}
static int rsc_hw_solver_init(struct sde_rsc_priv *rsc)
{
const u32 mode_0_start_addr = 0x0;
const u32 mode_1_start_addr = 0xa;
const u32 mode_2_start_addr = 0x15;
pr_debug("rsc solver init\n");
dss_reg_w(&rsc->drv_io, SDE_RSCC_SOFT_WAKEUP_TIME_LO_DRV0,
0xFFFFFFFF, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SOFT_WAKEUP_TIME_HI_DRV0,
0xFFFFFFFF, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_MAX_IDLE_DURATION_DRV0,
0xEFFFFFFF, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_0_DRV0,
0x0, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_1_DRV0,
rsc->timer_config.rsc_time_slot_0_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_2_DRV0,
rsc->timer_config.rsc_time_slot_1_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_3_DRV0,
rsc->timer_config.rsc_time_slot_2_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_SOLVER_MODES_ENABLED_DRV0,
0x7, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT0_PRI0_DRV0,
0x0, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT1_PRI0_DRV0,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT1_PRI3_DRV0,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT2_PRI0_DRV0,
0x2, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PRI_TABLE_SLOT2_PRI3_DRV0,
0x2, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_OVERRIDE_MODE_DRV0,
0x0, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_OVERRIDE_CTRL_DRV0,
mode_0_start_addr, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_TIMERS_CONSIDERED_DRV0,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_OVERRIDE_IDLE_TIME_DRV0,
0x01000010, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE0,
mode_0_start_addr, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE0,
0x80000000, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE0,
rsc->timer_config.rsc_backoff_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE0,
rsc->timer_config.pdc_backoff_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE1,
mode_1_start_addr, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE1,
0x80000000, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE1,
rsc->timer_config.rsc_backoff_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE1,
rsc->timer_config.pdc_backoff_time_ns, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM0_DRV0_MODE2,
mode_2_start_addr, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM1_DRV0_MODE2,
0x80000000, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM2_DRV0_MODE2,
0x0, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_MODE_PARM3_DRV0_MODE2,
rsc->timer_config.pdc_backoff_time_ns, rsc->debug_mode);
return 0;
}
static int sde_rsc_mode2_exit(struct sde_rsc_priv *rsc,
enum sde_rsc_state state)
{
int rc = -EBUSY;
int count, reg;
rsc_event_trigger(rsc, SDE_RSC_EVENT_PRE_CORE_RESTORE);
/**
* force busy and idle during clk & video mode state because it
* is trying to entry in mode-2 without turning on the vysnc.
*/
if ((state == SDE_RSC_VID_STATE) || (state == SDE_RSC_CLK_STATE)) {
reg = dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_OVERRIDE_CTRL, rsc->debug_mode);
reg &= ~(BIT(8) | BIT(0));
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
reg, rsc->debug_mode);
}
// needs review with HPG sequence
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_LO,
0x0, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F1_QTMR_V1_CNTP_CVAL_HI,
0x0, rsc->debug_mode);
reg = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
rsc->debug_mode);
reg &= ~BIT(3);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
reg, rsc->debug_mode);
reg = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_SPARE_PWR_EVENT,
rsc->debug_mode);
reg |= BIT(13);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_SPARE_PWR_EVENT,
reg, rsc->debug_mode);
/* make sure that mode-2 exit before wait*/
wmb();
/* check for sequence running status before exiting */
for (count = MAX_CHECK_LOOPS; count > 0; count--) {
if (regulator_is_enabled(rsc->fs)) {
rc = 0;
break;
}
usleep_range(10, 100);
}
reg = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_SPARE_PWR_EVENT,
rsc->debug_mode);
reg &= ~BIT(13);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_SPARE_PWR_EVENT,
reg, rsc->debug_mode);
if (rc)
pr_err("vdd reg is not enabled yet\n");
rsc_event_trigger(rsc, SDE_RSC_EVENT_POST_CORE_RESTORE);
return rc;
}
static int sde_rsc_mode2_entry(struct sde_rsc_priv *rsc)
{
int rc;
int count, wrapper_status;
unsigned long reg;
if (rsc->power_collapse_block)
return -EINVAL;
rc = regulator_set_mode(rsc->fs, REGULATOR_MODE_FAST);
if (rc) {
pr_err("vdd reg fast mode set failed rc:%d\n", rc);
return rc;
}
rsc_event_trigger(rsc, SDE_RSC_EVENT_PRE_CORE_PC);
/* update qtimers to high during clk & video mode state */
if ((rsc->current_state == SDE_RSC_VID_STATE) ||
(rsc->current_state == SDE_RSC_CLK_STATE)) {
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_HI,
0xffffffff, rsc->debug_mode);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_F0_QTMR_V1_CNTP_CVAL_LO,
0xffffffff, rsc->debug_mode);
}
wrapper_status = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
rsc->debug_mode);
wrapper_status |= BIT(3);
wrapper_status |= BIT(0);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
wrapper_status, rsc->debug_mode);
/**
* force busy and idle during clk & video mode state because it
* is trying to entry in mode-2 without turning on the vysnc.
*/
if ((rsc->current_state == SDE_RSC_VID_STATE) ||
(rsc->current_state == SDE_RSC_CLK_STATE)) {
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
BIT(0) | BIT(1), rsc->debug_mode);
wmb(); /* force busy gurantee */
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
BIT(0) | BIT(9), rsc->debug_mode);
}
/* make sure that mode-2 is triggered before wait*/
wmb();
rc = -EBUSY;
/* this wait is required to turn off the rscc clocks */
for (count = MAX_CHECK_LOOPS; count > 0; count--) {
reg = dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_PWR_CTRL, rsc->debug_mode);
if (test_bit(POWER_CTRL_BIT_12, &reg)) {
rc = 0;
break;
}
usleep_range(1, 2);
}
if (rc) {
pr_err("mdss gdsc power down failed rc:%d\n", rc);
goto end;
}
if ((rsc->current_state == SDE_RSC_VID_STATE) ||
(rsc->current_state == SDE_RSC_CLK_STATE)) {
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
BIT(0) | BIT(8), rsc->debug_mode);
wmb(); /* force busy on vsync */
}
rsc_event_trigger(rsc, SDE_RSC_EVENT_POST_CORE_PC);
return 0;
end:
sde_rsc_mode2_exit(rsc, rsc->current_state);
return rc;
}
static int sde_rsc_state_update(struct sde_rsc_priv *rsc,
enum sde_rsc_state state)
{
int rc = 0;
int reg;
if (rsc->power_collapse) {
rc = sde_rsc_mode2_exit(rsc, state);
if (rc)
pr_err("power collapse: mode2 exit failed\n");
else
rsc->power_collapse = false;
}
switch (state) {
case SDE_RSC_CMD_STATE:
pr_debug("command mode handling\n");
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x1, rsc->debug_mode);
dss_reg_w(&rsc->drv_io, SDE_RSCC_SOLVER_OVERRIDE_CTRL_DRV0,
0x0, rsc->debug_mode);
reg = dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_OVERRIDE_CTRL, rsc->debug_mode);
reg |= (BIT(0) | BIT(8));
reg &= ~(BIT(1) | BIT(2) | BIT(3) | BIT(6) | BIT(7));
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
reg, rsc->debug_mode);
/* make sure that solver is enabled */
wmb();
rsc_event_trigger(rsc, SDE_RSC_EVENT_SOLVER_ENABLED);
break;
case SDE_RSC_VID_STATE:
pr_debug("video mode handling\n");
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x1, rsc->debug_mode);
reg = dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_OVERRIDE_CTRL, rsc->debug_mode);
reg |= BIT(8);
reg &= ~(BIT(1) | BIT(0));
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
reg, rsc->debug_mode);
/* make sure that solver mode is override */
wmb();
rsc_event_trigger(rsc, SDE_RSC_EVENT_SOLVER_DISABLED);
break;
case SDE_RSC_CLK_STATE:
pr_debug("clk state handling\n");
reg = dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_OVERRIDE_CTRL, rsc->debug_mode);
reg &= ~(BIT(8) | BIT(0));
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
reg, rsc->debug_mode);
/* make sure that solver mode is disabled */
wmb();
break;
case SDE_RSC_IDLE_STATE:
rc = sde_rsc_mode2_entry(rsc);
if (rc)
pr_err("power collapse - mode 2 entry failed\n");
else
rsc->power_collapse = true;
break;
default:
pr_err("state:%d handling is not supported\n", state);
break;
}
return rc;
}
int rsc_hw_init(struct sde_rsc_priv *rsc)
{
int rc = 0;
rc = rsc_hw_qtimer_init(rsc);
if (rc) {
pr_err("rsc hw qtimer init failed\n");
goto end;
}
rc = rsc_hw_wrapper_init(rsc);
if (rc) {
pr_err("rsc hw wrapper init failed\n");
goto end;
}
rc = rsc_hw_seq_memory_init(rsc);
if (rc) {
pr_err("rsc sequencer memory init failed\n");
goto end;
}
rc = rsc_hw_solver_init(rsc);
if (rc) {
pr_err("rsc solver init failed\n");
goto end;
}
rc = rsc_hw_pdc_init(rsc);
if (rc) {
pr_err("rsc hw pdc init failed\n");
goto end;
}
/* make sure that hw is initialized */
wmb();
pr_info("sde rsc init successfully done\n");
end:
return rc;
}
int rsc_hw_mode_ctrl(struct sde_rsc_priv *rsc, enum rsc_mode_req request,
char *buffer, int buffer_size, u32 mode)
{
u32 blen = 0;
u32 slot_time;
switch (request) {
case MODE_READ:
if (!buffer || !buffer_size)
return blen;
blen = snprintf(buffer, buffer_size - blen,
"mode_status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SOLVER_STATUS2_DRV0,
rsc->debug_mode));
break;
case MODE_UPDATE:
slot_time = mode & BIT(0) ? 0x0 :
rsc->timer_config.rsc_time_slot_2_ns;
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_0_DRV0,
slot_time, rsc->debug_mode);
slot_time = mode & BIT(1) ?
rsc->timer_config.rsc_time_slot_0_ns :
rsc->timer_config.rsc_time_slot_2_ns;
dss_reg_w(&rsc->drv_io, SDE_RSC_SOLVER_TIME_SLOT_TABLE_1_DRV0,
slot_time, rsc->debug_mode);
rsc->power_collapse_block = !(mode & BIT(2));
break;
default:
break;
}
return blen;
}
int sde_rsc_debug_show(struct seq_file *s, struct sde_rsc_priv *rsc)
{
seq_printf(s, "override ctrl:0x%x\n",
dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_OVERRIDE_CTRL,
rsc->debug_mode));
seq_printf(s, "power ctrl:0x%x\n",
dss_reg_r(&rsc->wrapper_io, SDE_RSCC_PWR_CTRL,
rsc->debug_mode));
seq_printf(s, "vsycn timestamp0:0x%x\n",
dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP0,
rsc->debug_mode));
seq_printf(s, "vsycn timestamp1:0x%x\n",
dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP1,
rsc->debug_mode));
seq_printf(s, "error irq status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_ERROR_IRQ_STATUS_DRV0,
rsc->debug_mode));
seq_printf(s, "seq busy status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SEQ_BUSY_DRV0,
rsc->debug_mode));
seq_printf(s, "solver override ctrl status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SOLVER_OVERRIDE_CTRL_DRV0,
rsc->debug_mode));
seq_printf(s, "solver override status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SOLVER_STATUS0_DRV0,
rsc->debug_mode));
seq_printf(s, "solver timeslot status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SOLVER_STATUS1_DRV0,
rsc->debug_mode));
seq_printf(s, "solver mode status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_SOLVER_STATUS2_DRV0,
rsc->debug_mode));
seq_printf(s, "amc status:0x%x\n",
dss_reg_r(&rsc->drv_io, SDE_RSCC_AMC_TCS_MODE_IRQ_STATUS_DRV0,
rsc->debug_mode));
return 0;
}
int rsc_hw_vsync(struct sde_rsc_priv *rsc, enum rsc_vsync_req request,
char *buffer, int buffer_size, u32 mode)
{
u32 blen = 0, reg;
switch (request) {
case VSYNC_READ:
if (!buffer || !buffer_size)
return blen;
blen = snprintf(buffer, buffer_size - blen, "vsync0:0x%x\n",
dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP0,
rsc->debug_mode));
if (blen >= buffer_size)
return blen;
blen += snprintf(buffer + blen, buffer_size - blen,
"vsync1:0x%x\n",
dss_reg_r(&rsc->wrapper_io,
SDE_RSCC_WRAPPER_VSYNC_TIMESTAMP1,
rsc->debug_mode));
break;
case VSYNC_ENABLE:
reg = BIT(8) | ((mode & 0x7) < 10);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_DEBUG_BUS,
reg, rsc->debug_mode);
break;
case VSYNC_DISABLE:
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_DEBUG_BUS,
0x0, rsc->debug_mode);
break;
}
return blen;
}
bool rsc_hw_is_amc_mode(struct sde_rsc_priv *rsc)
{
return dss_reg_r(&rsc->drv_io, SDE_RSCC_TCS_DRV0_CONTROL,
rsc->debug_mode) & BIT(16);
}
int rsc_hw_tcs_wait(struct sde_rsc_priv *rsc)
{
int rc = -EBUSY;
int count, seq_status;
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x0, rsc->debug_mode);
seq_status = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
rsc->debug_mode) & BIT(1);
/* if seq busy - set TCS use OK to high and wait for 200us */
if (seq_status) {
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x1, rsc->debug_mode);
usleep_range(100, 200);
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x0, rsc->debug_mode);
}
/* check for sequence running status before exiting */
for (count = MAX_CHECK_LOOPS; count > 0; count--) {
seq_status = dss_reg_r(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
rsc->debug_mode) & BIT(1);
if (!seq_status) {
rc = 0;
break;
}
usleep_range(1, 2);
}
return rc;
}
int rsc_hw_tcs_use_ok(struct sde_rsc_priv *rsc)
{
dss_reg_w(&rsc->wrapper_io, SDE_RSCC_WRAPPER_CTRL,
0x1, rsc->debug_mode);
return 0;
}
int sde_rsc_hw_register(struct sde_rsc_priv *rsc)
{
pr_debug("rsc hardware register\n");
rsc->hw_ops.init = rsc_hw_init;
rsc->hw_ops.tcs_wait = rsc_hw_tcs_wait;
rsc->hw_ops.tcs_use_ok = rsc_hw_tcs_use_ok;
rsc->hw_ops.is_amc_mode = rsc_hw_is_amc_mode;
rsc->hw_ops.hw_vsync = rsc_hw_vsync;
rsc->hw_ops.state_update = sde_rsc_state_update;
rsc->hw_ops.debug_show = sde_rsc_debug_show;
rsc->hw_ops.mode_ctrl = rsc_hw_mode_ctrl;
return 0;
}