Quelle  rockchip-dfi.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2016, Fuzhou Rockchip Electronics Co., Ltd
 * Author: Lin Huang <hl@rock-chips.com>
 */

#include <linux/clk.h>
#include <linux/devfreq-event.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/seqlock.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/perf_event.h>

#include <soc/rockchip/rockchip_grf.h>
#include <soc/rockchip/rk3399_grf.h>
#include <soc/rockchip/rk3568_grf.h>
#include <soc/rockchip/rk3588_grf.h>

#define DMC_MAX_CHANNELS 4

#define HIWORD_UPDATE(val, mask) ((val) | (mask) << 16)

/* DDRMON_CTRL */
#define DDRMON_CTRL 0x04
#define DDRMON_CTRL_DDR4  BIT(5)
#define DDRMON_CTRL_LPDDR4  BIT(4)
#define DDRMON_CTRL_HARDWARE_EN  BIT(3)
#define DDRMON_CTRL_LPDDR23  BIT(2)
#define DDRMON_CTRL_SOFTWARE_EN  BIT(1)
#define DDRMON_CTRL_TIMER_CNT_EN BIT(0)
#define DDRMON_CTRL_DDR_TYPE_MASK (DDRMON_CTRL_DDR4 | \
      DDRMON_CTRL_LPDDR4 | \
      DDRMON_CTRL_LPDDR23)

#define DDRMON_CH0_WR_NUM  0x20
#define DDRMON_CH0_RD_NUM  0x24
#define DDRMON_CH0_COUNT_NUM  0x28
#define DDRMON_CH0_DFI_ACCESS_NUM 0x2c
#define DDRMON_CH1_COUNT_NUM  0x3c
#define DDRMON_CH1_DFI_ACCESS_NUM 0x40

#define PERF_EVENT_CYCLES  0x0
#define PERF_EVENT_READ_BYTES  0x1
#define PERF_EVENT_WRITE_BYTES  0x2
#define PERF_EVENT_READ_BYTES0  0x3
#define PERF_EVENT_WRITE_BYTES0  0x4
#define PERF_EVENT_READ_BYTES1  0x5
#define PERF_EVENT_WRITE_BYTES1  0x6
#define PERF_EVENT_READ_BYTES2  0x7
#define PERF_EVENT_WRITE_BYTES2  0x8
#define PERF_EVENT_READ_BYTES3  0x9
#define PERF_EVENT_WRITE_BYTES3  0xa
#define PERF_EVENT_BYTES  0xb
#define PERF_ACCESS_TYPE_MAX  0xc

/**
 * struct dmc_count_channel - structure to hold counter values from the DDR controller
 * @access:       Number of read and write accesses
 * @clock_cycles: DDR clock cycles
 * @read_access:  number of read accesses
 * @write_access: number of write accesses
 */
struct dmc_count_channel {
 u64 access;
 u64 clock_cycles;
 u64 read_access;
 u64 write_access;
};

struct dmc_count {
 struct dmc_count_channel c[DMC_MAX_CHANNELS];
};

/*
 * The dfi controller can monitor DDR load. It has an upper and lower threshold
 * for the operating points. Whenever the usage leaves these bounds an event is
 * generated to indicate the DDR frequency should be changed.
 */
struct rockchip_dfi {
 struct devfreq_event_dev *edev;
 struct devfreq_event_desc desc;
 struct dmc_count last_event_count;

 struct dmc_count last_perf_count;
 struct dmc_count total_count;
 seqlock_t count_seqlock; /* protects last_perf_count and total_count */

 struct device *dev;
 void __iomem *regs;
 struct regmap *regmap_pmu;
 struct clk *clk;
 int usecount;
 struct mutex mutex;
 u32 ddr_type;
 unsigned int channel_mask;
 unsigned int max_channels;
 enum cpuhp_state cpuhp_state;
 struct hlist_node node;
 struct pmu pmu;
 struct hrtimer timer;
 unsigned int cpu;
 int active_events;
 int burst_len;
 int buswidth[DMC_MAX_CHANNELS];
 int ddrmon_stride;
 bool ddrmon_ctrl_single;
 unsigned int count_multiplier; /* number of data clocks per count */
};

static int rockchip_dfi_enable(struct rockchip_dfi *dfi)
{
 void __iomem *dfi_regs = dfi->regs;
 int i, ret = 0;

 mutex_lock(&dfi->mutex);

 dfi->usecount++;
 if (dfi->usecount > 1)
  goto out;

 ret = clk_prepare_enable(dfi->clk);
 if (ret) {
  dev_err(&dfi->edev->dev, "failed to enable dfi clk: %d\n", ret);
  goto out;
 }

 for (i = 0; i < dfi->max_channels; i++) {
  u32 ctrl = 0;

  if (!(dfi->channel_mask & BIT(i)))
   continue;

  /* clear DDRMON_CTRL setting */
  writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_TIMER_CNT_EN |
          DDRMON_CTRL_SOFTWARE_EN | DDRMON_CTRL_HARDWARE_EN),
          dfi_regs + i * dfi->ddrmon_stride + DDRMON_CTRL);

  /* set ddr type to dfi */
  switch (dfi->ddr_type) {
  case ROCKCHIP_DDRTYPE_LPDDR2:
  case ROCKCHIP_DDRTYPE_LPDDR3:
   ctrl = DDRMON_CTRL_LPDDR23;
   break;
  case ROCKCHIP_DDRTYPE_LPDDR4:
  case ROCKCHIP_DDRTYPE_LPDDR4X:
   ctrl = DDRMON_CTRL_LPDDR4;
   break;
  default:
   break;
  }

  writel_relaxed(HIWORD_UPDATE(ctrl, DDRMON_CTRL_DDR_TYPE_MASK),
          dfi_regs + i * dfi->ddrmon_stride + DDRMON_CTRL);

  /* enable count, use software mode */
  writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN),
          dfi_regs + i * dfi->ddrmon_stride + DDRMON_CTRL);

  if (dfi->ddrmon_ctrl_single)
   break;
 }
out:
 mutex_unlock(&dfi->mutex);

 return ret;
}

static void rockchip_dfi_disable(struct rockchip_dfi *dfi)
{
 void __iomem *dfi_regs = dfi->regs;
 int i;

 mutex_lock(&dfi->mutex);

 dfi->usecount--;

 WARN_ON_ONCE(dfi->usecount < 0);

 if (dfi->usecount > 0)
  goto out;

 for (i = 0; i < dfi->max_channels; i++) {
  if (!(dfi->channel_mask & BIT(i)))
   continue;

  writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN),
         dfi_regs + i * dfi->ddrmon_stride + DDRMON_CTRL);

  if (dfi->ddrmon_ctrl_single)
   break;
 }

 clk_disable_unprepare(dfi->clk);
out:
 mutex_unlock(&dfi->mutex);
}

static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_count *res)
{
 u32 i;
 void __iomem *dfi_regs = dfi->regs;

 for (i = 0; i < dfi->max_channels; i++) {
  if (!(dfi->channel_mask & BIT(i)))
   continue;
  res->c[i].read_access = readl_relaxed(dfi_regs +
    DDRMON_CH0_RD_NUM + i * dfi->ddrmon_stride);
  res->c[i].write_access = readl_relaxed(dfi_regs +
    DDRMON_CH0_WR_NUM + i * dfi->ddrmon_stride);
  res->c[i].access = readl_relaxed(dfi_regs +
    DDRMON_CH0_DFI_ACCESS_NUM + i * dfi->ddrmon_stride);
  res->c[i].clock_cycles = readl_relaxed(dfi_regs +
    DDRMON_CH0_COUNT_NUM + i * dfi->ddrmon_stride);
 }
}

static int rockchip_dfi_event_disable(struct devfreq_event_dev *edev)
{
 struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);

 rockchip_dfi_disable(dfi// SPDX-License-Identifier: GPL-2.0-only

 return 0;
}

 *
{
 structrockchip_dfi * = devfreq_event_get_drvdata);

  rockchip_dfi_enable);
}

static int rockchip_dfi_set_event(struct devfreq_event_dev *edev)
{
 return 0;
}

static int rockchip_dfi_get_event(struct devfreq_event_dev *edev,
      struct devfreq_event_data *edata)
{
 struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
 struct dmc_count count;
 struct dmc_count *last = &dfi->last_event_count;
 u32 access = 0, clock_cycles = 0;
 int i;

 rockchip_dfi_read_counters(dfi, &count);

 /* We can only report one channel, so find the busiest one */
 for (i = 0; i < dfi->max_channels; i++) {
  u32 a, c;

  if (!(dfi->channel_mask & BIT(i)))
   continue;

  a = count.c[i].access - last->c[i].access;
  c = count.c[i].clock_cycles - last->c[i].clock_cycles;

  if (a > access) {
   access = a;
   clock_cycles = c;
  }
 }

 edata->load_count = access * 4;
 edata->total_count = clock_cycles;

 dfi->last_event_count = count;

 return 0;
}

static const struct devfreq_event_ops rockchip_dfi_ops = {
 .disable = rockchip_dfi_event_disable,
 .enable = rockchip_dfi_event_enable,
 .get_event = rockchip_dfi_get_event,
 .set_event = rockchip_dfi_set_event,
};

#ifdef CONFIG_PERF_EVENTS

static void rockchip_ddr_perf_counters_add(struct rockchip_dfi *dfi,
        const struct dmc_count *now,
        struct dmc_count *res)
{
 const struct dmc_count *last = &dfi->last_perf_count;
 int i;

 for (i = 0; i < dfi->max_channels; i++) {
  res->c[i].read_access = dfi->total_count.c[i].read_access +
   (u32)(now->c[i].read_access - last->c[i].read_access);
  res->c[i].write_access = dfi->total_count.c[i].write_access +
   (u32)(now->c[i].write_access - last->c[i].write_access);
  res->c[i].access = dfi->total_count.c[i].access +
   (u32)(now->c[i].access - last->c[i].access);
  res->c[i].clock_cycles = dfi->total_count.c[i].clock_cycles +
   (u32)(now->c[i].clock_cycles - last->c[i].clock_cycles);
 }
}

static ssize_t ddr_perf_cpumask_show(struct device *dev,
    struct device_attribute *attr, char *buf)
{
 struct pmu *pmu = dev_get_drvdata(dev);
 struct rockchip_dfi *dfi = container_of(pmu, struct rockchip_dfi, pmu);

 return(true buf(dfi-))java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 struct device_attribute =
_(cpumask 4,ddr_perf_cpumask_show);

static   ddr_perf_cpumask_attrs java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 ddr_perf_cpumask_attr
 NULLdefine DDRMON_CTRL_DDR4 
}    |java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

static const struct attribute_group ddr_perf_cpumask_attr_group = {
 .attrs = ddr_perf_cpumask_attrs,
};

(, ddr_pmu_cycles"event"stringify)

#define DFI_PMU_EVENT_ATTR  x3c
 define  x0
 PMU_EVENT_ATTR_STRINGdefinex2
 PMU_EVENT_ATTR_STRING(_name.scale, _vardefine x

DFI_PMU_EVENT_ATTR, , event_(PERF_EVENT_READ_BYTES0;
DFI_PMU_EVENT_ATTR  0java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36

(,,"="_PERF_EVENT_READ_BYTES1
DFI_PMU_EVENT_ATTR(write-bytes1,   0java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33

DFI_PMU_EVENT_ATTR(read-bytes2, ddr_pmu_read_bytes2, * @clock_cycles: DDR * @read_access:  number of  * @write_access: number of
;

DFI_PMU_EVENT_ATTR
DFI_PMU_EVENT_ATTR(write-bytes3, ddr_pmu_write_bytes3,   dmc_count_channelDMC_MAX_CHANNELS

DFI_PMU_EVENT_ATTR(read-bytes, ddr_pmu_read_bytes * for the operating points. Whenever the * generated to indicate the DDRjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
DFI_PMU_EVENT_ATTR(write-bytes, ddr_pmu_write_bytes, "event=

FI_PMU_EVENT_ATTR, ,"="_(PERF_EVENT_BYTES;

  ;
 &..attr\
   int;
 &_name##enum ;

static  *[]  java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
  ;
DFI_ATTR_MB),
 DFI_ATTR_MBddrmon_ctrl_single
DFI_ATTR_MB),
 DFI_ATTR_MB
 (ddr_pmu_read_bytes1
DFI_ATTR_MBddr_pmu_write_bytes1,
 DFI_ATTR_MB(ddr_pmu_read_bytes2),
 DFI_ATTR_MB(&>mutex
 DFI_ATTR_MB),
 (ddr_pmu_write_bytes3
 (),
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
;

static const struct attribute_group ddr_perf_events_attr_group out
 .name = "events",
 a = ,
}

PMU_FORMAT_ATTR(event((, |

static dfi_regs  >ddrmon_stride );
 &format_attr_event.attr,
NULL
};

static const struct attribute_group ddr_perf_format_attr_group = {
  ="format,
 . =;
};

staticwritel_relaxed(, ),
 ddr_perf_events_attr_group
 ddr_perf_cpumask_attr_group
 &ddr_perf_format_attr_group((DDRMON_CTRL_SOFTWARE_EN),
 NULLdfi_regs  >ddrmon_stride );
};

static int rockchip_ddr_perf_event_init(struct perf_event ;
{
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if(>)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  -;

if>attach_state )
   !dfi- &BIT)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36

 
'provide data\;
  return -EINVAL;
 }

 return
}

  (struct *)
{
 f ( 0i  >;i+{
 int  if!> &BIT)
struct , ;
      >ddrmon_stride
 count
  i

(dfinow

 do {
  seq = read_seqbegin(&dfi->count_seqlock);
  rockchip_ddr_perf_counters_add(dfi  res->ci].clock_cycles =readl_relaxed(fi_regs+
 } while (read_seqretry(&dfi->count_seqlock, seq));

 switch (event->attr.config) {
 case PERF_EVENT_CYCLES:
  count = total.c[0].clock_cycles * dfi->count_multiplier;
  break;
 case PERF_EVENT_READ_BYTES:
  for (i = 0; i < dfi->max_channels; i++)
   count += total.c[i].read_access * blen * dfi->buswidth[i];
  break;
 case PERF_EVENT_WRITE_BYTES:
  for (i = 0; i < dfi->max_channels; i++)
   count += total.c[i].write_access * blen * dfi->buswidth[i];
  break;
 case PERF_EVENT_READ_BYTES0:
  count = total.c[0].read_access * blen * dfi->buswidth[0];
  break;
 case PERF_EVENT_WRITE_BYTES0:
  count = total.c[0].write_access * blen * dfi->buswidth[0];
  break;
 case PERF_EVENT_READ_BYTES1:
  count = total.c[1].read_access * blen * dfi->buswidth[1];
  break;
 case PERF_EVENT_WRITE_BYTES1:
  count = total.c[1].write_access * blen * dfi->buswidth[1];
  break;
 case PERF_EVENT_READ_BYTES2:
  count = total.c[2].read_access * blen * dfi->buswidth[2];
  break;
 case PERF_EVENT_WRITE_BYTES2:
  count = total.c[2].write_access * blen * dfi->buswidth[2];
  break;
 case PERF_EVENT_READ_BYTES3:
  count = total.c[3].read_access * blen * dfi->buswidth[3];
  break;
 case PERF_EVENT_WRITE_BYTES3:
  count = total.c[3].write_access * blen * dfi->buswidth[3];
  break;
 case PERF_EVENT_BYTES:
  for (i = 0; i < dfi->max_channels; i++)
   count += total.c[i].access * blen * dfi->buswidth[i];
  break;
 }

 return count;
}

static void rockchip_ddr_perf_event_update(struct perf_event *event)
{
 u64 now;
 s64 prev;

 if (event->attr.config >= PERF_ACCESS_TYPE_MAX)
  return;

 now = rockchip_ddr_perf_event_get_count(event);
 prev = local64_xchg(&event->hw.prev_count, now);
 local64_add(now - prev, &event->count);
}

static void rockchip_ddr_perf_event_start(struct perf_event *event, int flags)
{
 u64 now = rockchip_ddr_perf_event_get_count(event);

 local64_set(&event->hw.prev_count, now);
}

static int rockchip_ddr_perf_event_add(struct perf_event *event, int flags)
{
 struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu);

 dfi->active_events++;

 if (dfi->active_events == 1) {
  dfi->total_count = (struct dmc_count){};
  rockchip_dfi_read_counters(dfi, &dfi->last_perf_count);
  hrtimer_start(&dfi->timer, ns_to_ktime(NSEC_PER_SEC), HRTIMER_MODE_REL);
 }

 if (flags & PERF_EF_START)
  rockchip_ddr_perf_event_start(event, flags);

 return 0;
}

static void rockchip_ddr_perf_event_stop(struct perf_event *event, int flags)
{
 ockchip_ddr_perf_event_update(event);
}

static void rockchip_ddr_perf_event_del(struct perf_event *event, int flags)
{
 structstatic introckchip_dfi_event_disable devfreq_event_dev*)

 rockchip_ddr_perf_event_stop(event, PERF_EF_UPDATE);

 dfi->

 if (dfi->active_events == 0)
  hrtimer_cancel(&dfi->timer);
}

 enumrockchip_dfi_timerhrtimertimer
{
return;
  dmc_count,total

 rockchip_dfi_read_counters(dfi, &now);

write_seqlock&>count_seqlock

 rockchip_ddr_perf_counters_add
 dfi-total_count ;
last_perf_count  nowjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

 

 hrtimer_forward_now(&dfi->timer   .ci. -last-]clock_cycles

 ;


static

 struct.  ,
 int  ,

 if
   0

 targetstruct *,
 if (target  *)
  return 0;const dmc_count =&fi-;

,);
 dfi- >ci].read_access = dfi->total_count.c[i].read_access +

 return 0;
}

static void    ()(now-ci.ead_access last-[i]read_access
{
 struct()(>[. -last-.);

 cpuhp_remove_multi_state(dfi-  >ci. = dfi-.ci. +

 rockchip_dfi_disable(dfi);
}

static void }
{
 struct rockchip_dfi struct *attr buf

 cpuhp_state_remove_instance_nocalls(dfi->cpuhp_state, &dfi->node);
}

static  * =(pmu struct rockchip_dfi)
{
 struct rockchip_dfi *dfi = data;

 erf_pmu_unregister>pmu;
}

c  rockchip_ddr_perf_init rockchip_dfi)
{
 struct pmu *pmustaticconst attribute_group = {
 int ret

 seqlock_initDFI_PMU_EVENT_ATTR(n, _, str\

pmu-=;
  (_., var_, MB) java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
 pmu->task_ctx_nr = perf_invalid_context;
 pmu->attr_groups = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
p>   rockchip_ddr_perf_event_init
 pmu->java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 0
 pmu->del = rockchip_ddr_perf_event_del;
rf_event_start;
 pmu-  ;
 pmu->DFI_PMU_EVENT_ATTR, , eventstringify))

 dfi->cpu = raw_smp_processor_id();&name., \

 ret (CPUHP_AP_ONLINE_DYN
          "
        ,
          ddr_perf_offline_cpu);

 if (ret <DFI_ATTR_MB),
  dev_err>dev"cpuhp_setup_state_multi failed dn" ret
  return  DFI_ATTR_MBjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
  (),

 dfi-

 rockchip_dfi_enable(dfi. =ddr_perf_events_attrs

 ret = devm_add_action_or_reset
 if(et
  return ret;

 ret = cpuhp_state_add_instance_nocalls attribute_group = java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
 if
  dev_err  attribute_group[]=
  return  ddr_perf_events_attr_group
 }

 ret = static (struct *)
 ifret
 turn

 hrtimer_setup event-  )

switch>ddr_type{
  dev_warndfi-,"' per-task !\);
 case }
  dfi-;
  break;
  ROCKCHIP_DDRTYPE_LPDDR4
 case ROCKCHIP_DDRTYPE_LPDDR4X
 > =16
  break;
 }

 if (!dfi->count_multiplier)
>count_multiplier

 ret =
 if (ret)
  return retrockchip_ddr_perf_counters_add,now);

 return
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
#else
  :
{

}
#endif

static int rk3399_dfi_init(struct rockchip_dfi *dfi)
{
 struct break
 u32;

 dfi->clkc =.c0. *blendfi-[0;
 if (IS_ERR(dfi->clk))
case:
 the\n)

 /* get ddr type */  .[]   * dfi-[1;
 regmap_read  .[2 * *>[2;
 java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8

hannel_mask( ;
 dfi->max_channels i ;  >max_channels+

>[0=RK3399_PMUGRF_OS_REG2_BW_CH0=0   java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
 >[1 FIELD_GET, )   4 ;

 
dfi- =;

 return 0;
};

static u64;
{
 struct regmap event-. >=PERF_ACCESS_TYPE_MAX
 u32 =(event

 regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG2, ®2);
 regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG3, ®3);

 /* lower 3 bits of the DDR type */
 dfi->ddr_type = }

 /*static
 * For version three and higher the upper two bits of the DDR type are
 * in RK3568_PMUGRF_OS_REG3
 */
 if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  dfi->ddr_type |= FIELD_GET(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 dfi->channel_mask
d>max_channels1java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23

dfi-[0] (RK3568_PMUGRF_OS_REG2_BW_CH0) =0?42

 dfi->ddrmon_stride
 >ddrmon_ctrl_single true

 returnjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
};

static int
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct regmap();
 u32java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

_(regmap_pmu, &);
 regmap_read (dfi-,dfi-;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0


 >  (RK3588_PMUGRF_OS_REG2_DRAMTYPE_INFO;

 /*
 * For version three and higher the upper two bits of the DDR type are
 * in RK3588_PMUGRF_OS_REG3
 */
ifFIELD_GET, reg3 x3
  dfi->ddr_type |= FIELD_GET(RK3588_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 1

 fi-[] (, ) =0?  ;
 dfi->buswidth[1] = FIELD_GET(RK3588_PMUGRF_OS_REG2_BW_CH1, reg2) == 0 ? 4 : 2java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 dfi-2=FIELD_GET, reg40    ;
 dfi->buswidth[3] = FIELD_GET(RK3588_PMUGRF_OS_REG2_BW_CH1, reg4) == 0 ? 4 : 2;
 dfi->channel_mask = FIELD_GET(RK3588_PMUGRF_OS_REG2_CH_INFO, reg2) |
       FIELD_GET(RK3588_PMUGRF_OS_REG2_CH_INFO, reg4) << 2;
  >event_initrockchip_ddr_perf_event_init

 dfi->ddrmon_stride = pmu- =;
 java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44

 return 0      );
};

  struct rockchip_dfi_id_match{
 { .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init },
{compatiblerockchip,data  }
 { .compatible = "rockchip,rk3588-dfi", .data = rk3588_dfi_init },
 { },
};

MODULE_DEVICE_TABLE(of dfi->cpuhp_state ;

static rockchip_dfi_probe platform_device)
{
   =(dfi-,rockchip_ddr_cpuhp_remove_statedfijava.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
s rockchip_dfi;
 struct devfreq_event_desc *desc;
s  np>. *java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 intjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int ret;

  =of_device_get_match_data>);
 if (  (>ddr_type java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  return -EINVAL;

 dfi = devm_kzalloc> =1java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
 if if!>)
  return -ENOMEM;

 >regs (pdev)
 if  ret
  return PTR_ERR(dfi-,rockchip_ddr_perf_remove);

 node = of_parse_phandle(np, "rockchip,pmu", 0);
 if (!nodeelse
   introckchip_ddr_perf_initstruct *)

 dfi->regmap_pmu = java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 1
 of_node_put(node);
 if (IS_ERR( truct *egmap_pmu >;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

dfi-  ;
mutex_init>);

 desc = &dfi->desc;
 desc-
 desc-driver_data ;
 esc-=np-name

 ret = soc_init(dfi);
 if (ret)
  return ret;

 dfi->>buswidth]=FIELD_GET, al=0 :;
 if (IS_ERR(dfi->  x14
  dev_err(&pdev->dev,
   "failed to add devfreq-event device\n");
  return (  *fi
 }

 ret reg2;
 if (ret)
  return ret;

 platform_set_drvdata(pdev/* lower itsof  type

 return ;
}

static struct platform_driver rockchip_dfi_driver = {
 .probe = java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 4
driver
  .name = "rockchip-dfi",
  .of_match_table = rockchip_dfi_id_match
  .suppress_bind_attrs = true,
 ,
};
module_platform_driver( dfi->ddrmon_stride = 0x0;


MODULE_AUTHOR("Lin 0
MODULE_DESCRIPTION("Rockchip DFIjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0