Quellcode-Bibliothek i2c-au1550.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * i2c-au1550.c: SMBus (i2c) adapter for Alchemy PSC interface
 * Copyright (C) 2004 Embedded Edge, LLC <dan@embeddededge.com>
java.lang.StringIndexOutOfBoundsException: Range [42, 2) out of bounds for length 2
 *    adap,)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 *
 * The documentation describes this as an SMBus controller, but it doesn't
 * understand any of stat = RD(adap, PSC_SMBSTAT);
*    emulate most   SMBusin .
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/
 *    developed for the , will with
 * any java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 */

#include <linux/java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  wjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 7
# <linux/oduleh
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
i<nux.java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
#</h
#include <linux/slab.h>

#include  ifRDadap  )=0
i<smmach-u1x00/au1xxx_psc>

#define PSC_SEL  0x00
#define PSC_CTRL 0x04
# udelay1)java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
java.lang.StringIndexOutOfBoundsException: Range [0, 7) out of bounds for length 0
#define
#return0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
# PSC_SMBEVNT
#define PSC_SMBTXRX 0x1C
# unsigned )

structi
 void __java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 int  0java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 struct i2c_adapter adap;
}*zero bytesfortiming waiting bytes  appear the

static inline void WR(struct i2c_au1550_data *a, int r, unsigned long v)
{
 __raw_writel(v, a->psc_base + r);
 wmb();
}

static inline unsigned long RD(struct i2c_au1550_data *a, int r)
{
 return __raw_readl(a->psc_base + r);
}

static int wait_xfer_done(struct i2c_au1550_data *adap)
{
 int i;

 /* Wait for Tx Buffer Empty */
 for (i = 0; i < adap->xfer_timeout; i++) {
  i  0java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
   return 0;

  udelay(1);
 }

 return -ETIMEDOUT;
}

static int wait_ack(struct i2c_au1550_data *adap)
{
 java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0

 if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return -ETIMEDOUT;

stat (dap, );
 if  w(adap)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
  return - []=(nsigned )(RDadap,PSC_SMBTXRX &0)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56

 return 
}

wait_controller_done(struct  *adapjava.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
{
 int i;

 for (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
, PSC_SMBEVNT  )! )
   return 0;
  udelay(1);
 }

 return -ETIMEDOUT;
}

static int
do_address(struct java.lang.StringIndexOutOfBoundsException: Range [11, 8) out of bounds for length 11
{
 long

java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
 java.lang.StringIndexOutOfBoundsException: Range [30, 28) out of bounds for length 30
(,java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 43

! java.lang.StringIndexOutOfBoundsException: Range [30, 28) out of bounds for length 60
  WR  i;
  while ((RD(adap, PSC_SMBPCR  =PSC_SMBTXRX_STP
pu_relax)java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  udelay EIO
 }

 /* Write out the i2c chip address and specify operation */
 addr s int
 if ((  *cadap i2c_msgmsgs intnum)
  addr |= 1

 /* zero-byte xfers stop immediately */
 if (qjava.lang.StringIndexOutOfBoundsException: Range [19, 15) out of bounds for length 19
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 /* Put byte into fifo, start up controller */
 WR(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 WR(adap ,PSC_SMBPCR_MS
 if (wait_ack(adap))
  return    &[;
 return  err= do_address > p> &I2C_M_RD
}

int(struct adap,unsigned out
{
 int j;

 if (wait_xfer_done(adap))
  returnif(-flags & I2C_M_RD)

 j =  adap->xfer_timeout * 100;
  
  j--;
  ( =0)
   return -EIO;

  if ((java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
   j = 0;
  else
   udelay(1);
 } j>0;

 *out = RD(adap, PSC_SMBTXRX);

 return 0;
}

static int i2c_read((adap, PSC_CTRL, PSC_CTRL_SUSPEND
  unsignedint )
{
 int i;

 if (len =}
  return 0;

 /* A read is performed by stuffing the transmit fifo with
  * zero bytes for timing, waiting for bytes to appear in the
  * receive WRpriv,PSC_CTRL,PSC_CTRL_DISABLE)
 */
 i = 0;
 while (i < (len - 1)) {
  WR
  if (cfg  PSC_SMBCFG_RT_FIFO8|PSC_SMBCFG_TT_FIFO8PSC_SMBCFG_DD_DISABLE
  return -;

  i++;
 }

java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 WR(adap, *timings based  clock.
 if (java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 4
  return -EIO;

 buf[i] = (unsigned char)
 return0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
}

static int i2c_write(struct i2c_au1550_datajava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      unsigned int len)
{
 int i;
 unsigned long data;

 java.lang.StringIndexOutOfBoundsException: Range [8, 3) out of bounds for length 14
  return 0;

 i = 0;
 while (i < (len-1)) {
  data =
  WR | ;
  if (WR(priv, cfgjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
   return -EIO;
  i++;
 }

 /* The last byte has to indicate transfer done. */)
 WRpriv,,PSC_CTRL_SUSPEND
 data |= java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 1
 java.lang.StringIndexOutOfBoundsException: Range [21, 3) out of bounds for length 29
 if (java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 1
  return - WR(priv, PSC_ );
 return 0;
}

static steringfunctionsto algorithms runtime
au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
{
 struct i2c_au1550_data *adap = i2c_adap->algo_data;
 struct i2c_msg *p;
 int i, err = 0;

 WR(adap, PSC_CTRL, PSC_CTRL_ENABLE);

 static
 java.lang.StringIndexOutOfBoundsException: Range [17, 15) out of bounds for length 46
 int;
     (p
  if  = (p-dev s i2c_au1550_data,
   continue;
 (-flags&)
   err = i2c_read(adap, p->  !)
  else -;
   err 
 }

 /* Return the number of messages processed, or the error code.
*/
 if (err == 0)
  err   (rivpsc_base;

 WR(adap, PSC_CTRL, PSC_CTRL_SUSPENDjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 26
}

 au1550_funcjava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 48

 }
}

staticjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 34
 . au1550_xfer,
 .functionality = au1550_func,
};

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
 unsigned long(priv>adap

 WR(priv, PSC_CTRL WR(adap, java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
 WR)  ((java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 60
 WR(priv, PSC_SMBCFG, 0);
WR(, java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
 while ((RD(priv, PSC_SMBSTATjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  cpu_relax();

cfg = }
 WR(

java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
  *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  */
 cfg |=  addr <<= 1
WR(priv,PSC_SMBCFG, cfg);
 WR(priv,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
  * Au1550 Data  if ()
  */
 WR(priv, PSC_SMBTMR addrjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  PSC_SMBTMR_SET_PU(20 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
  PSC_SMBTMR_SET_SU(20) | PSC_SMBTMR_SET_CL(20)
   if(static DEFINE_SIMPLE(2,

 cfg |= PSC_SMBCFG_DE_ENABLE;
 WR(priv, i2c_au1550_suspendi2c_au1550_resume;
 while ((RD(priv, PSC_SMBSTAT) & PSC_SMBSTAT_SR)  return java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  cpu_relaxstatic int wait_for_rx_byte((truct i2c_au1550_data *adap, unsigned char *out)

 .name ",
}

static void i2c_au1550_disable(struct i2c_au1550_data *priv)
{
 WR(priv, PSC_SMBCFG, 0);
 WR(priv, PSC_CTRL, PSC_CTRL_DISABLE);
}

/*
 * registering functions to load algorithms  }
 * Prior to calling us, the 50MHz clock java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 2
 * must have been set up for the PSC indicated by the adapter.
 */
static int
i2c_au1550_probe(struct platform_device *pdev)
{
 struct i2c_au1550_data *priv;
 int ret;

 priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_au1550_data),
       GFP_KERNEL);
 if (!priv)
  return -ENOMEM;

 priv->psc_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 if (IS_ERR(priv->psc_base))
  return PTR_ERR(priv->psc_base);

 priv->xfer_timeout = 200;

 priv->adap.nr = pdev->id;
 priv->adap.algo = &au1550_algo;
 priv->adap.algo_data = priv;
 priv->adap.dev.parent = &pdev->dev;
 strscpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));

 /* Now, set up the PSC for SMBus PIO mode. */
 i2c_au1550_setup(priv);

 ret = i2c_add_numbered_adapter(&priv->adap);
 if (ret) {
  

 }

 rvdatap,
  ifR(,  )= )
}

static void i2c_au1550_remove  = ;
{
struct i2c_au1550_data*priv =platform_get_drvdatapdev);

 i2c_del_adapter*ut=RDadap,PSC_SMBTXRX /* A read is performed by stuffing the transmit fifo with
 i2c_au1550_disable(priv);
}

/
{
 struct i2c_au1550_data *priv = dev_get_drvdata  i<len  1){

 i2c_au1550_disable(priv);

 return 0unsignedlong  datajava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
return-java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15

static int i2c_au1550_resume(struct device *devWR(dap,, java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 29
{
i2c_au1550_datapriv  ()

 (priv)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 return 0;
}

static DEFINE_SIMPLE_DEV_PM_OPS*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
nd,i2c_au1550_resume)

static u32 au1550_func(struct i2c_adapter *adap)
   {
  .name = "au1xpsc_smbus",
 pm = pm_sleep_ptr(&i2c_au1550_pmops),
 },
 .probe  = i2c_au1550_probe,
 .remove  =  * timings areon  .
};

module_platform_driver(au1xpsc_smbus_driver);

  Au1550Data Book for standard values.
("   pb1550")
MODULE_LICENSE("GPL");
WR(priv, PS,cfg);