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-rw-r--r--drivers/i2c/algos/Kconfig6
-rw-r--r--drivers/i2c/algos/Makefile1
-rw-r--r--drivers/i2c/algos/i2c-algo-bit.c23
-rw-r--r--drivers/i2c/algos/i2c-algo-pca.c2
-rw-r--r--drivers/i2c/algos/i2c-algo-pcf.c2
-rw-r--r--drivers/i2c/algos/i2c-algo-sgi.c2
-rw-r--r--drivers/i2c/algos/i2c-algo-sibyte.c215
7 files changed, 12 insertions, 239 deletions
diff --git a/drivers/i2c/algos/Kconfig b/drivers/i2c/algos/Kconfig
index 30408015d231..c034820615bb 100644
--- a/drivers/i2c/algos/Kconfig
+++ b/drivers/i2c/algos/Kconfig
@@ -53,12 +53,6 @@ config I2C_ALGO8XX
tristate "MPC8xx CPM I2C interface"
depends on 8xx && I2C
-config I2C_ALGO_SIBYTE
- tristate "SiByte SMBus interface"
- depends on SIBYTE_SB1xxx_SOC && I2C
- help
- Supports the SiByte SOC on-chip I2C interfaces (2 channels).
-
config I2C_ALGO_SGI
tristate "I2C SGI interfaces"
depends on I2C && (SGI_IP22 || SGI_IP32 || X86_VISWS)
diff --git a/drivers/i2c/algos/Makefile b/drivers/i2c/algos/Makefile
index 867fe1f67401..208be04a3dbd 100644
--- a/drivers/i2c/algos/Makefile
+++ b/drivers/i2c/algos/Makefile
@@ -6,7 +6,6 @@ obj-$(CONFIG_I2C_ALGOBIT) += i2c-algo-bit.o
obj-$(CONFIG_I2C_ALGOPCF) += i2c-algo-pcf.o
obj-$(CONFIG_I2C_ALGOPCA) += i2c-algo-pca.o
obj-$(CONFIG_I2C_ALGOITE) += i2c-algo-ite.o
-obj-$(CONFIG_I2C_ALGO_SIBYTE) += i2c-algo-sibyte.o
obj-$(CONFIG_I2C_ALGO_SGI) += i2c-algo-sgi.o
ifeq ($(CONFIG_I2C_DEBUG_ALGO),y)
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index ab230c033f99..21c36bfb5e6b 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -76,17 +76,15 @@ static inline void scllo(struct i2c_algo_bit_data *adap)
* Raise scl line, and do checking for delays. This is necessary for slower
* devices.
*/
-static inline int sclhi(struct i2c_algo_bit_data *adap)
+static int sclhi(struct i2c_algo_bit_data *adap)
{
unsigned long start;
setscl(adap,1);
/* Not all adapters have scl sense line... */
- if (adap->getscl == NULL ) {
- udelay(adap->udelay);
- return 0;
- }
+ if (!adap->getscl)
+ goto done;
start=jiffies;
while (! getscl(adap) ) {
@@ -101,6 +99,8 @@ static inline int sclhi(struct i2c_algo_bit_data *adap)
cond_resched();
}
DEBSTAT(printk(KERN_DEBUG "needed %ld jiffies\n", jiffies-start));
+
+done:
udelay(adap->udelay);
return 0;
}
@@ -121,7 +121,6 @@ static void i2c_repstart(struct i2c_algo_bit_data *adap)
DEBPROTO(printk(" Sr "));
setsda(adap,1);
sclhi(adap);
- udelay(adap->udelay);
sdalo(adap);
scllo(adap);
@@ -306,7 +305,7 @@ bailout:
* 0 chip did not answer
* -x transmission error
*/
-static inline int try_address(struct i2c_adapter *i2c_adap,
+static int try_address(struct i2c_adapter *i2c_adap,
unsigned char addr, int retries)
{
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
@@ -354,15 +353,11 @@ static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
return (retval<0)? retval : -EFAULT;
/* got a better one ?? */
}
-#if 0
- /* from asm/delay.h */
- __delay(adap->mdelay * (loops_per_sec / 1000) );
-#endif
}
return wrcount;
}
-static inline int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
+static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
int inval;
int rdcount=0; /* counts bytes read */
@@ -412,7 +407,7 @@ static inline int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
* -x an error occurred (like: -EREMOTEIO if the device did not answer, or
* -ETIMEDOUT, for example if the lines are stuck...)
*/
-static inline int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
+static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
unsigned short flags = msg->flags;
unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
@@ -517,7 +512,7 @@ static u32 bit_func(struct i2c_adapter *adap)
/* -----exported algorithm data: ------------------------------------- */
-static struct i2c_algorithm i2c_bit_algo = {
+static const struct i2c_algorithm i2c_bit_algo = {
.master_xfer = bit_xfer,
.functionality = bit_func,
};
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index b88a6fcf7bd0..9081c9fbcd29 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -355,7 +355,7 @@ static int pca_init(struct i2c_algo_pca_data *adap)
return 0;
}
-static struct i2c_algorithm pca_algo = {
+static const struct i2c_algorithm pca_algo = {
.master_xfer = pca_xfer,
.functionality = pca_func,
};
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index 5b24930adb5a..3b2003398966 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -458,7 +458,7 @@ static u32 pcf_func(struct i2c_adapter *adap)
/* -----exported algorithm data: ------------------------------------- */
-static struct i2c_algorithm pcf_algo = {
+static const struct i2c_algorithm pcf_algo = {
.master_xfer = pcf_xfer,
.functionality = pcf_func,
};
diff --git a/drivers/i2c/algos/i2c-algo-sgi.c b/drivers/i2c/algos/i2c-algo-sgi.c
index 932c4fa86c73..490d99997fd0 100644
--- a/drivers/i2c/algos/i2c-algo-sgi.c
+++ b/drivers/i2c/algos/i2c-algo-sgi.c
@@ -157,7 +157,7 @@ static u32 sgi_func(struct i2c_adapter *adap)
return I2C_FUNC_SMBUS_EMUL;
}
-static struct i2c_algorithm sgi_algo = {
+static const struct i2c_algorithm sgi_algo = {
.master_xfer = sgi_xfer,
.functionality = sgi_func,
};
diff --git a/drivers/i2c/algos/i2c-algo-sibyte.c b/drivers/i2c/algos/i2c-algo-sibyte.c
deleted file mode 100644
index 32d41c6fac0f..000000000000
--- a/drivers/i2c/algos/i2c-algo-sibyte.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/* ------------------------------------------------------------------------- */
-/* i2c-algo-sibyte.c i2c driver algorithms for bit-shift adapters */
-/* ------------------------------------------------------------------------- */
-/* Copyright (C) 2001,2002,2003 Broadcom Corporation
- Copyright (C) 1995-2000 Simon G. Vogl
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* ------------------------------------------------------------------------- */
-
-/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
- Frodo Looijaard <frodol@dds.nl>. */
-
-/* Ported for SiByte SOCs by Broadcom Corporation. */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/sibyte/sb1250_regs.h>
-#include <asm/sibyte/sb1250_smbus.h>
-
-#include <linux/i2c.h>
-#include <linux/i2c-algo-sibyte.h>
-
-/* ----- global defines ----------------------------------------------- */
-#define SMB_CSR(a,r) ((long)(a->reg_base + r))
-
-/* ----- global variables --------------------------------------------- */
-
-/* module parameters:
- */
-static int bit_scan; /* have a look at what's hanging 'round */
-
-
-static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr,
- unsigned short flags, char read_write,
- u8 command, int size, union i2c_smbus_data * data)
-{
- struct i2c_algo_sibyte_data *adap = i2c_adap->algo_data;
- int data_bytes = 0;
- int error;
-
- while (csr_in32(SMB_CSR(adap, R_SMB_STATUS)) & M_SMB_BUSY)
- ;
-
- switch (size) {
- case I2C_SMBUS_QUICK:
- csr_out32((V_SMB_ADDR(addr) | (read_write == I2C_SMBUS_READ ? M_SMB_QDATA : 0) |
- V_SMB_TT_QUICKCMD), SMB_CSR(adap, R_SMB_START));
- break;
- case I2C_SMBUS_BYTE:
- if (read_write == I2C_SMBUS_READ) {
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_RD1BYTE),
- SMB_CSR(adap, R_SMB_START));
- data_bytes = 1;
- } else {
- csr_out32(V_SMB_CMD(command), SMB_CSR(adap, R_SMB_CMD));
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_WR1BYTE),
- SMB_CSR(adap, R_SMB_START));
- }
- break;
- case I2C_SMBUS_BYTE_DATA:
- csr_out32(V_SMB_CMD(command), SMB_CSR(adap, R_SMB_CMD));
- if (read_write == I2C_SMBUS_READ) {
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_CMD_RD1BYTE),
- SMB_CSR(adap, R_SMB_START));
- data_bytes = 1;
- } else {
- csr_out32(V_SMB_LB(data->byte), SMB_CSR(adap, R_SMB_DATA));
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_WR2BYTE),
- SMB_CSR(adap, R_SMB_START));
- }
- break;
- case I2C_SMBUS_WORD_DATA:
- csr_out32(V_SMB_CMD(command), SMB_CSR(adap, R_SMB_CMD));
- if (read_write == I2C_SMBUS_READ) {
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_CMD_RD2BYTE),
- SMB_CSR(adap, R_SMB_START));
- data_bytes = 2;
- } else {
- csr_out32(V_SMB_LB(data->word & 0xff), SMB_CSR(adap, R_SMB_DATA));
- csr_out32(V_SMB_MB(data->word >> 8), SMB_CSR(adap, R_SMB_DATA));
- csr_out32((V_SMB_ADDR(addr) | V_SMB_TT_WR2BYTE),
- SMB_CSR(adap, R_SMB_START));
- }
- break;
- default:
- return -1; /* XXXKW better error code? */
- }
-
- while (csr_in32(SMB_CSR(adap, R_SMB_STATUS)) & M_SMB_BUSY)
- ;
-
- error = csr_in32(SMB_CSR(adap, R_SMB_STATUS));
- if (error & M_SMB_ERROR) {
- /* Clear error bit by writing a 1 */
- csr_out32(M_SMB_ERROR, SMB_CSR(adap, R_SMB_STATUS));
- return -1; /* XXXKW better error code? */
- }
-
- if (data_bytes == 1)
- data->byte = csr_in32(SMB_CSR(adap, R_SMB_DATA)) & 0xff;
- if (data_bytes == 2)
- data->word = csr_in32(SMB_CSR(adap, R_SMB_DATA)) & 0xffff;
-
- return 0;
-}
-
-static int algo_control(struct i2c_adapter *adapter,
- unsigned int cmd, unsigned long arg)
-{
- return 0;
-}
-
-static u32 bit_func(struct i2c_adapter *adap)
-{
- return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA);
-}
-
-
-/* -----exported algorithm data: ------------------------------------- */
-
-static struct i2c_algorithm i2c_sibyte_algo = {
- .smbus_xfer = smbus_xfer,
- .algo_control = algo_control, /* ioctl */
- .functionality = bit_func,
-};
-
-/*
- * registering functions to load algorithms at runtime
- */
-int i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed)
-{
- int i;
- struct i2c_algo_sibyte_data *adap = i2c_adap->algo_data;
-
- /* register new adapter to i2c module... */
- i2c_adap->algo = &i2c_sibyte_algo;
-
- /* Set the frequency to 100 kHz */
- csr_out32(speed, SMB_CSR(adap,R_SMB_FREQ));
- csr_out32(0, SMB_CSR(adap,R_SMB_CONTROL));
-
- /* scan bus */
- if (bit_scan) {
- union i2c_smbus_data data;
- int rc;
- printk(KERN_INFO " i2c-algo-sibyte.o: scanning bus %s.\n",
- i2c_adap->name);
- for (i = 0x00; i < 0x7f; i++) {
- /* XXXKW is this a realistic probe? */
- rc = smbus_xfer(i2c_adap, i, 0, I2C_SMBUS_READ, 0,
- I2C_SMBUS_BYTE_DATA, &data);
- if (!rc) {
- printk("(%02x)",i);
- } else
- printk(".");
- }
- printk("\n");
- }
-
- return i2c_add_adapter(i2c_adap);
-}
-
-
-int i2c_sibyte_del_bus(struct i2c_adapter *adap)
-{
- int res;
-
- if ((res = i2c_del_adapter(adap)) < 0)
- return res;
-
- return 0;
-}
-
-int __init i2c_algo_sibyte_init (void)
-{
- printk("i2c-algo-sibyte.o: i2c SiByte algorithm module\n");
- return 0;
-}
-
-
-EXPORT_SYMBOL(i2c_sibyte_add_bus);
-EXPORT_SYMBOL(i2c_sibyte_del_bus);
-
-#ifdef MODULE
-MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
-MODULE_DESCRIPTION("SiByte I2C-Bus algorithm");
-module_param(bit_scan, int, 0);
-MODULE_PARM_DESC(bit_scan, "Scan for active chips on the bus");
-MODULE_LICENSE("GPL");
-
-int init_module(void)
-{
- return i2c_algo_sibyte_init();
-}
-
-void cleanup_module(void)
-{
-}
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 16:25:44 +0000