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-rw-r--r--drivers/i2c/busses/Kconfig13
-rw-r--r--drivers/i2c/busses/Makefile1
-rw-r--r--drivers/i2c/busses/i2c-acorn.c97
-rw-r--r--drivers/i2c/busses/i2c-ali1535.c2
-rw-r--r--drivers/i2c/busses/i2c-ali15x3.c2
-rw-r--r--drivers/i2c/busses/i2c-amd756.c2
-rw-r--r--drivers/i2c/busses/i2c-amd8111.c5
-rw-r--r--drivers/i2c/busses/i2c-i801.c27
-rw-r--r--drivers/i2c/busses/i2c-iop3xx.c2
-rw-r--r--drivers/i2c/busses/i2c-pasemi.c6
-rw-r--r--drivers/i2c/busses/i2c-piix4.c2
-rw-r--r--drivers/i2c/busses/i2c-pxa.c241
-rw-r--r--drivers/i2c/busses/i2c-sis5595.c2
-rw-r--r--drivers/i2c/busses/i2c-sis630.c2
-rw-r--r--drivers/i2c/busses/i2c-sis96x.c2
-rw-r--r--drivers/i2c/busses/i2c-via.c2
16 files changed, 314 insertions, 94 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 4d44a2db29dd..ece31d2c6c64 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -344,8 +344,7 @@ config I2C_PARPORT_LIGHT
config I2C_PASEMI
tristate "PA Semi SMBus interface"
-# depends on PPC_PASEMI && I2C && PCI
- depends on I2C && PCI
+ depends on PPC_PASEMI && I2C && PCI
help
Supports the PA Semi PWRficient on-chip SMBus interfaces.
@@ -495,6 +494,16 @@ config I2C_VERSATILE
This driver can also be built as a module. If so, the module
will be called i2c-versatile.
+config I2C_ACORN
+ bool "Acorn IOC/IOMD I2C bus support"
+ depends on I2C && ARCH_ACORN
+ default y
+ select I2C_ALGOBIT
+ help
+ Say yes if you want to support the I2C bus on Acorn platforms.
+
+ If you don't know, say Y.
+
config I2C_VIA
tristate "VIA 82C586B"
depends on I2C && PCI && EXPERIMENTAL
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 03505aa44bbf..290b54018354 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_I2C_SIS630) += i2c-sis630.o
obj-$(CONFIG_I2C_SIS96X) += i2c-sis96x.o
obj-$(CONFIG_I2C_STUB) += i2c-stub.o
obj-$(CONFIG_I2C_VERSATILE) += i2c-versatile.o
+obj-$(CONFIG_I2C_ACORN) += i2c-acorn.o
obj-$(CONFIG_I2C_VIA) += i2c-via.o
obj-$(CONFIG_I2C_VIAPRO) += i2c-viapro.o
obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
diff --git a/drivers/i2c/busses/i2c-acorn.c b/drivers/i2c/busses/i2c-acorn.c
new file mode 100644
index 000000000000..09bd7f40b90c
--- /dev/null
+++ b/drivers/i2c/busses/i2c-acorn.c
@@ -0,0 +1,97 @@
+/*
+ * linux/drivers/acorn/char/i2c.c
+ *
+ * Copyright (C) 2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * ARM IOC/IOMD i2c driver.
+ *
+ * On Acorn machines, the following i2c devices are on the bus:
+ * - PCF8583 real time clock & static RAM
+ */
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/hardware/ioc.h>
+#include <asm/system.h>
+
+#define FORCE_ONES 0xdc
+#define SCL 0x02
+#define SDA 0x01
+
+/*
+ * We must preserve all non-i2c output bits in IOC_CONTROL.
+ * Note also that we need to preserve the value of SCL and
+ * SDA outputs as well (which may be different from the
+ * values read back from IOC_CONTROL).
+ */
+static u_int force_ones;
+
+static void ioc_setscl(void *data, int state)
+{
+ u_int ioc_control = ioc_readb(IOC_CONTROL) & ~(SCL | SDA);
+ u_int ones = force_ones;
+
+ if (state)
+ ones |= SCL;
+ else
+ ones &= ~SCL;
+
+ force_ones = ones;
+
+ ioc_writeb(ioc_control | ones, IOC_CONTROL);
+}
+
+static void ioc_setsda(void *data, int state)
+{
+ u_int ioc_control = ioc_readb(IOC_CONTROL) & ~(SCL | SDA);
+ u_int ones = force_ones;
+
+ if (state)
+ ones |= SDA;
+ else
+ ones &= ~SDA;
+
+ force_ones = ones;
+
+ ioc_writeb(ioc_control | ones, IOC_CONTROL);
+}
+
+static int ioc_getscl(void *data)
+{
+ return (ioc_readb(IOC_CONTROL) & SCL) != 0;
+}
+
+static int ioc_getsda(void *data)
+{
+ return (ioc_readb(IOC_CONTROL) & SDA) != 0;
+}
+
+static struct i2c_algo_bit_data ioc_data = {
+ .setsda = ioc_setsda,
+ .setscl = ioc_setscl,
+ .getsda = ioc_getsda,
+ .getscl = ioc_getscl,
+ .udelay = 80,
+ .timeout = 100
+};
+
+static struct i2c_adapter ioc_ops = {
+ .id = I2C_HW_B_IOC,
+ .algo_data = &ioc_data,
+};
+
+static int __init i2c_ioc_init(void)
+{
+ force_ones = FORCE_ONES | SCL | SDA;
+
+ return i2c_bit_add_bus(&ioc_ops);
+}
+
+__initcall(i2c_ioc_init);
diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index 6fd8ad7faa06..1e277ba5a9f3 100644
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -494,7 +494,7 @@ static int __devinit ali1535_probe(struct pci_dev *dev, const struct pci_device_
return -ENODEV;
}
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
ali1535_adapter.dev.parent = &dev->dev;
snprintf(ali1535_adapter.name, I2C_NAME_SIZE,
diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index e4e0df106812..e47fe01bf42a 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -489,7 +489,7 @@ static int __devinit ali15x3_probe(struct pci_dev *dev, const struct pci_device_
return -ENODEV;
}
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
ali15x3_adapter.dev.parent = &dev->dev;
snprintf(ali15x3_adapter.name, I2C_NAME_SIZE,
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index fa6155a54cc3..7490dc1771ae 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -374,7 +374,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
dev_dbg(&pdev->dev, "SMBREV = 0x%X\n", temp);
dev_dbg(&pdev->dev, "AMD756_smba = 0x%X\n", amd756_ioport);
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
amd756_smbus.dev.parent = &pdev->dev;
sprintf(amd756_smbus.name, "SMBus %s adapter at %04x",
diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index 5bba3fb50d71..0c70f8293341 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -254,7 +254,8 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
break;
case I2C_SMBUS_BLOCK_PROC_CALL:
- len = min_t(u8, data->block[0], 31);
+ len = min_t(u8, data->block[0],
+ I2C_SMBUS_BLOCK_MAX - 1);
amd_ec_write(smbus, AMD_SMB_CMD, command);
amd_ec_write(smbus, AMD_SMB_BCNT, len);
for (i = 0; i < len; i++)
@@ -371,7 +372,7 @@ static int __devinit amd8111_probe(struct pci_dev *dev,
smbus->adapter.algo = &smbus_algorithm;
smbus->adapter.algo_data = smbus;
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
smbus->adapter.dev.parent = &dev->dev;
pci_write_config_dword(smbus->dev, AMD_PCI_MISC, 0);
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 21f2671f7220..a320e7d82c1f 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -97,6 +97,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
int command, int hwpec);
static unsigned long i801_smba;
+static unsigned char i801_original_hstcfg;
static struct pci_driver i801_driver;
static struct pci_dev *I801_dev;
static int isich4;
@@ -510,6 +511,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
}
pci_read_config_byte(I801_dev, SMBHSTCFG, &temp);
+ i801_original_hstcfg = temp;
temp &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */
if (!(temp & SMBHSTCFG_HST_EN)) {
dev_info(&dev->dev, "Enabling SMBus device\n");
@@ -522,7 +524,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
else
dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n");
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
i801_adapter.dev.parent = &dev->dev;
snprintf(i801_adapter.name, I2C_NAME_SIZE,
@@ -543,6 +545,7 @@ exit:
static void __devexit i801_remove(struct pci_dev *dev)
{
i2c_del_adapter(&i801_adapter);
+ pci_write_config_byte(I801_dev, SMBHSTCFG, i801_original_hstcfg);
pci_release_region(dev, SMBBAR);
/*
* do not call pci_disable_device(dev) since it can cause hard hangs on
@@ -550,11 +553,33 @@ static void __devexit i801_remove(struct pci_dev *dev)
*/
}
+#ifdef CONFIG_PM
+static int i801_suspend(struct pci_dev *dev, pm_message_t mesg)
+{
+ pci_save_state(dev);
+ pci_write_config_byte(dev, SMBHSTCFG, i801_original_hstcfg);
+ pci_set_power_state(dev, pci_choose_state(dev, mesg));
+ return 0;
+}
+
+static int i801_resume(struct pci_dev *dev)
+{
+ pci_set_power_state(dev, PCI_D0);
+ pci_restore_state(dev);
+ return pci_enable_device(dev);
+}
+#else
+#define i801_suspend NULL
+#define i801_resume NULL
+#endif
+
static struct pci_driver i801_driver = {
.name = "i801_smbus",
.id_table = i801_ids,
.probe = i801_probe,
.remove = __devexit_p(i801_remove),
+ .suspend = i801_suspend,
+ .resume = i801_resume,
};
static int __init i2c_i801_init(void)
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 20ee4f7c53a0..90e2d9350c1b 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -83,7 +83,7 @@ iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
* Every time unit enable is asserted, GPOD needs to be cleared
* on IOP3XX to avoid data corruption on the bus.
*/
-#ifdef CONFIG_PLAT_IOP
+#if defined(CONFIG_ARCH_IOP32X) || defined(CONFIG_ARCH_IOP33X)
if (iop3xx_adap->id == 0) {
gpio_line_set(IOP3XX_GPIO_LINE(7), GPIO_LOW);
gpio_line_set(IOP3XX_GPIO_LINE(6), GPIO_LOW);
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index f54fb5d65cc4..bf89eeef74e9 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -141,7 +141,7 @@ static int pasemi_i2c_xfer_msg(struct i2c_adapter *adapter,
for (i = 0; i < msg->len - 1; i++)
TXFIFO_WR(smbus, msg->buf[i]);
- TXFIFO_WR(smbus, msg->buf[msg->len] |
+ TXFIFO_WR(smbus, msg->buf[msg->len-1] |
(stop ? MTXFIFO_STOP : 0));
}
@@ -226,7 +226,7 @@ static int pasemi_smb_xfer(struct i2c_adapter *adapter,
rd = RXFIFO_RD(smbus);
len = min_t(u8, (rd & MRXFIFO_DATA_M),
I2C_SMBUS_BLOCK_MAX);
- TXFIFO_WR(smbus, (len + 1) | MTXFIFO_READ |
+ TXFIFO_WR(smbus, len | MTXFIFO_READ |
MTXFIFO_STOP);
} else {
len = min_t(u8, data->block[0], I2C_SMBUS_BLOCK_MAX);
@@ -258,7 +258,7 @@ static int pasemi_smb_xfer(struct i2c_adapter *adapter,
rd = RXFIFO_RD(smbus);
len = min_t(u8, (rd & MRXFIFO_DATA_M),
I2C_SMBUS_BLOCK_MAX - len);
- TXFIFO_WR(smbus, (len + 1) | MTXFIFO_READ | MTXFIFO_STOP);
+ TXFIFO_WR(smbus, len | MTXFIFO_READ | MTXFIFO_STOP);
break;
default:
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index d888293c1a9c..21b180904085 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -425,7 +425,7 @@ static int __devinit piix4_probe(struct pci_dev *dev,
if (retval)
return retval;
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
piix4_adapter.dev.parent = &dev->dev;
snprintf(piix4_adapter.name, I2C_NAME_SIZE,
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index c3b1567c852a..14e83d0aac8c 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -34,6 +34,7 @@
#include <asm/hardware.h>
#include <asm/irq.h>
+#include <asm/io.h>
#include <asm/arch/i2c.h>
#include <asm/arch/pxa-regs.h>
@@ -54,8 +55,21 @@ struct pxa_i2c {
unsigned int irqlogidx;
u32 isrlog[32];
u32 icrlog[32];
+
+ void __iomem *reg_base;
+
+ unsigned long iobase;
+ unsigned long iosize;
+
+ int irq;
};
+#define _IBMR(i2c) ((i2c)->reg_base + 0)
+#define _IDBR(i2c) ((i2c)->reg_base + 8)
+#define _ICR(i2c) ((i2c)->reg_base + 0x10)
+#define _ISR(i2c) ((i2c)->reg_base + 0x18)
+#define _ISAR(i2c) ((i2c)->reg_base + 0x20)
+
/*
* I2C Slave mode address
*/
@@ -130,7 +144,8 @@ static unsigned int i2c_debug = DEBUG;
static void i2c_pxa_show_state(struct pxa_i2c *i2c, int lno, const char *fname)
{
- dev_dbg(&i2c->adap.dev, "state:%s:%d: ISR=%08x, ICR=%08x, IBMR=%02x\n", fname, lno, ISR, ICR, IBMR);
+ dev_dbg(&i2c->adap.dev, "state:%s:%d: ISR=%08x, ICR=%08x, IBMR=%02x\n", fname, lno,
+ readl(_ISR(i2c)), readl(_ICR(i2c)), readl(_IBMR(i2c)));
}
#define show_state(i2c) i2c_pxa_show_state(i2c, __LINE__, __FUNCTION__)
@@ -153,7 +168,7 @@ static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why)
printk("i2c: msg_num: %d msg_idx: %d msg_ptr: %d\n",
i2c->msg_num, i2c->msg_idx, i2c->msg_ptr);
printk("i2c: ICR: %08x ISR: %08x\n"
- "i2c: log: ", ICR, ISR);
+ "i2c: log: ", readl(_ICR(i2c)), readl(_ISR(i2c)));
for (i = 0; i < i2c->irqlogidx; i++)
printk("[%08x:%08x] ", i2c->isrlog[i], i2c->icrlog[i]);
printk("\n");
@@ -161,7 +176,7 @@ static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why)
static inline int i2c_pxa_is_slavemode(struct pxa_i2c *i2c)
{
- return !(ICR & ICR_SCLE);
+ return !(readl(_ICR(i2c)) & ICR_SCLE);
}
static void i2c_pxa_abort(struct pxa_i2c *i2c)
@@ -173,28 +188,29 @@ static void i2c_pxa_abort(struct pxa_i2c *i2c)
return;
}
- while (time_before(jiffies, timeout) && (IBMR & 0x1) == 0) {
- unsigned long icr = ICR;
+ while (time_before(jiffies, timeout) && (readl(_IBMR(i2c)) & 0x1) == 0) {
+ unsigned long icr = readl(_ICR(i2c));
icr &= ~ICR_START;
icr |= ICR_ACKNAK | ICR_STOP | ICR_TB;
- ICR = icr;
+ writel(icr, _ICR(i2c));
show_state(i2c);
msleep(1);
}
- ICR &= ~(ICR_MA | ICR_START | ICR_STOP);
+ writel(readl(_ICR(i2c)) & ~(ICR_MA | ICR_START | ICR_STOP),
+ _ICR(i2c));
}
static int i2c_pxa_wait_bus_not_busy(struct pxa_i2c *i2c)
{
int timeout = DEF_TIMEOUT;
- while (timeout-- && ISR & (ISR_IBB | ISR_UB)) {
- if ((ISR & ISR_SAD) != 0)
+ while (timeout-- && readl(_ISR(i2c)) & (ISR_IBB | ISR_UB)) {
+ if ((readl(_ISR(i2c)) & ISR_SAD) != 0)
timeout += 4;
msleep(2);
@@ -214,9 +230,9 @@ static int i2c_pxa_wait_master(struct pxa_i2c *i2c)
while (time_before(jiffies, timeout)) {
if (i2c_debug > 1)
dev_dbg(&i2c->adap.dev, "%s: %ld: ISR=%08x, ICR=%08x, IBMR=%02x\n",
- __func__, (long)jiffies, ISR, ICR, IBMR);
+ __func__, (long)jiffies, readl(_ISR(i2c)), readl(_ICR(i2c)), readl(_IBMR(i2c)));
- if (ISR & ISR_SAD) {
+ if (readl(_ISR(i2c)) & ISR_SAD) {
if (i2c_debug > 0)
dev_dbg(&i2c->adap.dev, "%s: Slave detected\n", __func__);
goto out;
@@ -226,7 +242,7 @@ static int i2c_pxa_wait_master(struct pxa_i2c *i2c)
* quick check of the i2c lines themselves to ensure they've
* gone high...
*/
- if ((ISR & (ISR_UB | ISR_IBB)) == 0 && IBMR == 3) {
+ if ((readl(_ISR(i2c)) & (ISR_UB | ISR_IBB)) == 0 && readl(_IBMR(i2c)) == 3) {
if (i2c_debug > 0)
dev_dbg(&i2c->adap.dev, "%s: done\n", __func__);
return 1;
@@ -246,7 +262,7 @@ static int i2c_pxa_set_master(struct pxa_i2c *i2c)
if (i2c_debug)
dev_dbg(&i2c->adap.dev, "setting to bus master\n");
- if ((ISR & (ISR_UB | ISR_IBB)) != 0) {
+ if ((readl(_ISR(i2c)) & (ISR_UB | ISR_IBB)) != 0) {
dev_dbg(&i2c->adap.dev, "%s: unit is busy\n", __func__);
if (!i2c_pxa_wait_master(i2c)) {
dev_dbg(&i2c->adap.dev, "%s: error: unit busy\n", __func__);
@@ -254,7 +270,7 @@ static int i2c_pxa_set_master(struct pxa_i2c *i2c)
}
}
- ICR |= ICR_SCLE;
+ writel(readl(_ICR(i2c)) | ICR_SCLE, _ICR(i2c));
return 0;
}
@@ -270,11 +286,11 @@ static int i2c_pxa_wait_slave(struct pxa_i2c *i2c)
while (time_before(jiffies, timeout)) {
if (i2c_debug > 1)
dev_dbg(&i2c->adap.dev, "%s: %ld: ISR=%08x, ICR=%08x, IBMR=%02x\n",
- __func__, (long)jiffies, ISR, ICR, IBMR);
+ __func__, (long)jiffies, readl(_ISR(i2c)), readl(_ICR(i2c)), readl(_IBMR(i2c)));
- if ((ISR & (ISR_UB|ISR_IBB)) == 0 ||
- (ISR & ISR_SAD) != 0 ||
- (ICR & ICR_SCLE) == 0) {
+ if ((readl(_ISR(i2c)) & (ISR_UB|ISR_IBB)) == 0 ||
+ (readl(_ISR(i2c)) & ISR_SAD) != 0 ||
+ (readl(_ICR(i2c)) & ICR_SCLE) == 0) {
if (i2c_debug > 1)
dev_dbg(&i2c->adap.dev, "%s: done\n", __func__);
return 1;
@@ -302,9 +318,9 @@ static void i2c_pxa_set_slave(struct pxa_i2c *i2c, int errcode)
/* we need to wait for the stop condition to end */
/* if we where in stop, then clear... */
- if (ICR & ICR_STOP) {
+ if (readl(_ICR(i2c)) & ICR_STOP) {
udelay(100);
- ICR &= ~ICR_STOP;
+ writel(readl(_ICR(i2c)) & ~ICR_STOP, _ICR(i2c));
}
if (!i2c_pxa_wait_slave(i2c)) {
@@ -314,12 +330,12 @@ static void i2c_pxa_set_slave(struct pxa_i2c *i2c, int errcode)
}
}
- ICR &= ~(ICR_STOP|ICR_ACKNAK|ICR_MA);
- ICR &= ~ICR_SCLE;
+ writel(readl(_ICR(i2c)) & ~(ICR_STOP|ICR_ACKNAK|ICR_MA), _ICR(i2c));
+ writel(readl(_ICR(i2c)) & ~ICR_SCLE, _ICR(i2c));
if (i2c_debug) {
- dev_dbg(&i2c->adap.dev, "ICR now %08x, ISR %08x\n", ICR, ISR);
- decode_ICR(ICR);
+ dev_dbg(&i2c->adap.dev, "ICR now %08x, ISR %08x\n", readl(_ICR(i2c)), readl(_ISR(i2c)));
+ decode_ICR(readl(_ICR(i2c)));
}
}
#else
@@ -334,24 +350,24 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
i2c_pxa_abort(i2c);
/* reset according to 9.8 */
- ICR = ICR_UR;
- ISR = I2C_ISR_INIT;
- ICR &= ~ICR_UR;
+ writel(ICR_UR, _ICR(i2c));
+ writel(I2C_ISR_INIT, _ISR(i2c));
+ writel(readl(_ICR(i2c)) & ~ICR_UR, _ICR(i2c));
- ISAR = i2c->slave_addr;
+ writel(i2c->slave_addr, _ISAR(i2c));
/* set control register values */
- ICR = I2C_ICR_INIT;
+ writel(I2C_ICR_INIT, _ICR(i2c));
#ifdef CONFIG_I2C_PXA_SLAVE
dev_info(&i2c->adap.dev, "Enabling slave mode\n");
- ICR |= ICR_SADIE | ICR_ALDIE | ICR_SSDIE;
+ writel(readl(_ICR(i2c)) | ICR_SADIE | ICR_ALDIE | ICR_SSDIE, _ICR(i2c));
#endif
i2c_pxa_set_slave(i2c, 0);
/* enable unit */
- ICR |= ICR_IUE;
+ writel(readl(_ICR(i2c)) | ICR_IUE, _ICR(i2c));
udelay(100);
}
@@ -371,19 +387,19 @@ static void i2c_pxa_slave_txempty(struct pxa_i2c *i2c, u32 isr)
if (i2c->slave != NULL)
ret = i2c->slave->read(i2c->slave->data);
- IDBR = ret;
- ICR |= ICR_TB; /* allow next byte */
+ writel(ret, _IDBR(i2c));
+ writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c)); /* allow next byte */
}
}
static void i2c_pxa_slave_rxfull(struct pxa_i2c *i2c, u32 isr)
{
- unsigned int byte = IDBR;
+ unsigned int byte = readl(_IDBR(i2c));
if (i2c->slave != NULL)
i2c->slave->write(i2c->slave->data, byte);
- ICR |= ICR_TB;
+ writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c));
}
static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
@@ -403,13 +419,13 @@ static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
* start condition... if this happens, we'd better back off
* and stop holding the poor thing up
*/
- ICR &= ~(ICR_START|ICR_STOP);
- ICR |= ICR_TB;
+ writel(readl(_ICR(i2c)) & ~(ICR_START|ICR_STOP), _ICR(i2c));
+ writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c));
timeout = 0x10000;
while (1) {
- if ((IBMR & 2) == 2)
+ if ((readl(_IBMR(i2c)) & 2) == 2)
break;
timeout--;
@@ -420,7 +436,7 @@ static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
}
}
- ICR &= ~ICR_SCLE;
+ writel(readl(_ICR(i2c)) & ~ICR_SCLE, _ICR(i2c));
}
static void i2c_pxa_slave_stop(struct pxa_i2c *i2c)
@@ -447,14 +463,14 @@ static void i2c_pxa_slave_txempty(struct pxa_i2c *i2c, u32 isr)
if (isr & ISR_BED) {
/* what should we do here? */
} else {
- IDBR = 0;
- ICR |= ICR_TB;
+ writel(0, _IDBR(i2c));
+ writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c));
}
}
static void i2c_pxa_slave_rxfull(struct pxa_i2c *i2c, u32 isr)
{
- ICR |= ICR_TB | ICR_ACKNAK;
+ writel(readl(_ICR(i2c)) | ICR_TB | ICR_ACKNAK, _ICR(i2c));
}
static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
@@ -466,13 +482,13 @@ static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
* start condition... if this happens, we'd better back off
* and stop holding the poor thing up
*/
- ICR &= ~(ICR_START|ICR_STOP);
- ICR |= ICR_TB | ICR_ACKNAK;
+ writel(readl(_ICR(i2c)) & ~(ICR_START|ICR_STOP), _ICR(i2c));
+ writel(readl(_ICR(i2c)) | ICR_TB | ICR_ACKNAK, _ICR(i2c));
timeout = 0x10000;
while (1) {
- if ((IBMR & 2) == 2)
+ if ((readl(_IBMR(i2c)) & 2) == 2)
break;
timeout--;
@@ -483,7 +499,7 @@ static void i2c_pxa_slave_start(struct pxa_i2c *i2c, u32 isr)
}
}
- ICR &= ~ICR_SCLE;
+ writel(readl(_ICR(i2c)) & ~ICR_SCLE, _ICR(i2c));
}
static void i2c_pxa_slave_stop(struct pxa_i2c *i2c)
@@ -514,13 +530,13 @@ static inline void i2c_pxa_start_message(struct pxa_i2c *i2c)
/*
* Step 1: target slave address into IDBR
*/
- IDBR = i2c_pxa_addr_byte(i2c->msg);
+ writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
/*
* Step 2: initiate the write.
*/
- icr = ICR & ~(ICR_STOP | ICR_ALDIE);
- ICR = icr | ICR_START | ICR_TB;
+ icr = readl(_ICR(i2c)) & ~(ICR_STOP | ICR_ALDIE);
+ writel(icr | ICR_START | ICR_TB, _ICR(i2c));
}
/*
@@ -594,7 +610,7 @@ static void i2c_pxa_master_complete(struct pxa_i2c *i2c, int ret)
static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
{
- u32 icr = ICR & ~(ICR_START|ICR_STOP|ICR_ACKNAK|ICR_TB);
+ u32 icr = readl(_ICR(i2c)) & ~(ICR_START|ICR_STOP|ICR_ACKNAK|ICR_TB);
again:
/*
@@ -645,7 +661,7 @@ static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
/*
* Write mode. Write the next data byte.
*/
- IDBR = i2c->msg->buf[i2c->msg_ptr++];
+ writel(i2c->msg->buf[i2c->msg_ptr++], _IDBR(i2c));
icr |= ICR_ALDIE | ICR_TB;
@@ -675,7 +691,7 @@ static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
/*
* Write the next address.
*/
- IDBR = i2c_pxa_addr_byte(i2c->msg);
+ writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
/*
* And trigger a repeated start, and send the byte.
@@ -696,18 +712,18 @@ static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
i2c->icrlog[i2c->irqlogidx-1] = icr;
- ICR = icr;
+ writel(icr, _ICR(i2c));
show_state(i2c);
}
static void i2c_pxa_irq_rxfull(struct pxa_i2c *i2c, u32 isr)
{
- u32 icr = ICR & ~(ICR_START|ICR_STOP|ICR_ACKNAK|ICR_TB);
+ u32 icr = readl(_ICR(i2c)) & ~(ICR_START|ICR_STOP|ICR_ACKNAK|ICR_TB);
/*
* Read the byte.
*/
- i2c->msg->buf[i2c->msg_ptr++] = IDBR;
+ i2c->msg->buf[i2c->msg_ptr++] = readl(_IDBR(i2c));
if (i2c->msg_ptr < i2c->msg->len) {
/*
@@ -724,17 +740,17 @@ static void i2c_pxa_irq_rxfull(struct pxa_i2c *i2c, u32 isr)
i2c->icrlog[i2c->irqlogidx-1] = icr;
- ICR = icr;
+ writel(icr, _ICR(i2c));
}
static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
{
struct pxa_i2c *i2c = dev_id;
- u32 isr = ISR;
+ u32 isr = readl(_ISR(i2c));
if (i2c_debug > 2 && 0) {
dev_dbg(&i2c->adap.dev, "%s: ISR=%08x, ICR=%08x, IBMR=%02x\n",
- __func__, isr, ICR, IBMR);
+ __func__, isr, readl(_ICR(i2c)), readl(_IBMR(i2c)));
decode_ISR(isr);
}
@@ -746,7 +762,7 @@ static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
/*
* Always clear all pending IRQs.
*/
- ISR = isr & (ISR_SSD|ISR_ALD|ISR_ITE|ISR_IRF|ISR_SAD|ISR_BED);
+ writel(isr & (ISR_SSD|ISR_ALD|ISR_ITE|ISR_IRF|ISR_SAD|ISR_BED), _ISR(i2c));
if (isr & ISR_SAD)
i2c_pxa_slave_start(i2c, isr);
@@ -779,7 +795,7 @@ static int i2c_pxa_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num
/* If the I2C controller is disabled we need to reset it (probably due
to a suspend/resume destroying state). We do this here as we can then
avoid worrying about resuming the controller before its users. */
- if (!(ICR & ICR_IUE))
+ if (!(readl(_ICR(i2c)) & ICR_IUE))
i2c_pxa_reset(i2c);
for (i = adap->retries; i >= 0; i--) {
@@ -810,28 +826,53 @@ static const struct i2c_algorithm i2c_pxa_algorithm = {
static struct pxa_i2c i2c_pxa = {
.lock = SPIN_LOCK_UNLOCKED,
- .wait = __WAIT_QUEUE_HEAD_INITIALIZER(i2c_pxa.wait),
.adap = {
.owner = THIS_MODULE,
.algo = &i2c_pxa_algorithm,
- .name = "pxa2xx-i2c",
+ .name = "pxa2xx-i2c.0",
.retries = 5,
},
};
+#define res_len(r) ((r)->end - (r)->start + 1)
static int i2c_pxa_probe(struct platform_device *dev)
{
struct pxa_i2c *i2c = &i2c_pxa;
+ struct resource *res;
#ifdef CONFIG_I2C_PXA_SLAVE
struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
#endif
int ret;
+ int irq;
-#ifdef CONFIG_PXA27x
- pxa_gpio_mode(GPIO117_I2CSCL_MD);
- pxa_gpio_mode(GPIO118_I2CSDA_MD);
- udelay(100);
-#endif
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ irq = platform_get_irq(dev, 0);
+ if (res == NULL || irq < 0)
+ return -ENODEV;
+
+ if (!request_mem_region(res->start, res_len(res), res->name))
+ return -ENOMEM;
+
+ i2c = kmalloc(sizeof(struct pxa_i2c), GFP_KERNEL);
+ if (!i2c) {
+ ret = -ENOMEM;
+ goto emalloc;
+ }
+
+ memcpy(i2c, &i2c_pxa, sizeof(struct pxa_i2c));
+ init_waitqueue_head(&i2c->wait);
+ i2c->adap.name[strlen(i2c->adap.name) - 1] = '0' + dev->id % 10;
+
+ i2c->reg_base = ioremap(res->start, res_len(res));
+ if (!i2c->reg_base) {
+ ret = -EIO;
+ goto eremap;
+ }
+
+ i2c->iobase = res->start;
+ i2c->iosize = res_len(res);
+
+ i2c->irq = irq;
i2c->slave_addr = I2C_PXA_SLAVE_ADDR;
@@ -842,11 +883,28 @@ static int i2c_pxa_probe(struct platform_device *dev)
}
#endif
- pxa_set_cken(CKEN14_I2C, 1);
- ret = request_irq(IRQ_I2C, i2c_pxa_handler, IRQF_DISABLED,
- "pxa2xx-i2c", i2c);
+ switch (dev->id) {
+ case 0:
+#ifdef CONFIG_PXA27x
+ pxa_gpio_mode(GPIO117_I2CSCL_MD);
+ pxa_gpio_mode(GPIO118_I2CSDA_MD);
+#endif
+ pxa_set_cken(CKEN14_I2C, 1);
+ break;
+#ifdef CONFIG_PXA27x
+ case 1:
+ local_irq_disable();
+ PCFR |= PCFR_PI2CEN;
+ local_irq_enable();
+ pxa_set_cken(CKEN15_PWRI2C, 1);
+#endif
+ }
+
+ ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED,
+ i2c->adap.name, i2c);
if (ret)
- goto out;
+ goto ereqirq;
+
i2c_pxa_reset(i2c);
@@ -856,7 +914,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
ret = i2c_add_adapter(&i2c->adap);
if (ret < 0) {
printk(KERN_INFO "I2C: Failed to add bus\n");
- goto err_irq;
+ goto eadapt;
}
platform_set_drvdata(dev, i2c);
@@ -870,9 +928,25 @@ static int i2c_pxa_probe(struct platform_device *dev)
#endif
return 0;
- err_irq:
- free_irq(IRQ_I2C, i2c);
- out:
+eadapt:
+ free_irq(irq, i2c);
+ereqirq:
+ switch (dev->id) {
+ case 0:
+ pxa_set_cken(CKEN14_I2C, 0);
+ break;
+#ifdef CONFIG_PXA27x
+ case 1:
+ pxa_set_cken(CKEN15_PWRI2C, 0);
+ local_irq_disable();
+ PCFR &= ~PCFR_PI2CEN;
+ local_irq_enable();
+#endif
+ }
+eremap:
+ kfree(i2c);
+emalloc:
+ release_mem_region(res->start, res_len(res));
return ret;
}
@@ -883,8 +957,21 @@ static int i2c_pxa_remove(struct platform_device *dev)
platform_set_drvdata(dev, NULL);
i2c_del_adapter(&i2c->adap);
- free_irq(IRQ_I2C, i2c);
- pxa_set_cken(CKEN14_I2C, 0);
+ free_irq(i2c->irq, i2c);
+ switch (dev->id) {
+ case 0:
+ pxa_set_cken(CKEN14_I2C, 0);
+ break;
+#ifdef CONFIG_PXA27x
+ case 1:
+ pxa_set_cken(CKEN15_PWRI2C, 0);
+ local_irq_disable();
+ PCFR &= ~PCFR_PI2CEN;
+ local_irq_enable();
+#endif
+ }
+ release_mem_region(i2c->iobase, i2c->iosize);
+ kfree(i2c);
return 0;
}
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
index d333babe4ad3..a6feed449dbe 100644
--- a/drivers/i2c/busses/i2c-sis5595.c
+++ b/drivers/i2c/busses/i2c-sis5595.c
@@ -384,7 +384,7 @@ static int __devinit sis5595_probe(struct pci_dev *dev, const struct pci_device_
return -ENODEV;
}
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
sis5595_adapter.dev.parent = &dev->dev;
sprintf(sis5595_adapter.name, "SMBus SIS5595 adapter at %04x",
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index 172bacf932a6..5fd734f99ee9 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -477,7 +477,7 @@ static int __devinit sis630_probe(struct pci_dev *dev, const struct pci_device_i
return -ENODEV;
}
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
sis630_adapter.dev.parent = &dev->dev;
sprintf(sis630_adapter.name, "SMBus SIS630 adapter at %04x",
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
index 73dae449fb23..4157b0cd604c 100644
--- a/drivers/i2c/busses/i2c-sis96x.c
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -297,7 +297,7 @@ static int __devinit sis96x_probe(struct pci_dev *dev,
return -EINVAL;
}
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
sis96x_adapter.dev.parent = &dev->dev;
snprintf(sis96x_adapter.name, I2C_NAME_SIZE,
diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c
index bbcc62151f7c..81520868797b 100644
--- a/drivers/i2c/busses/i2c-via.c
+++ b/drivers/i2c/busses/i2c-via.c
@@ -138,7 +138,7 @@ static int __devinit vt586b_probe(struct pci_dev *dev, const struct pci_device_i
outb(inb(I2C_DIR) & ~(I2C_SDA | I2C_SCL), I2C_DIR);
outb(inb(I2C_OUT) & ~(I2C_SDA | I2C_SCL), I2C_OUT);
- /* set up the driverfs linkage to our parent device */
+ /* set up the sysfs linkage to our parent device */
vt586b_adapter.dev.parent = &dev->dev;
res = i2c_bit_add_bus(&vt586b_adapter);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.