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-rw-r--r--drivers/i2c/busses/Kconfig6
-rw-r--r--drivers/i2c/busses/i2c-amd756.c2
-rw-r--r--drivers/i2c/busses/i2c-davinci.c17
-rw-r--r--drivers/i2c/busses/i2c-i801.c10
-rw-r--r--drivers/i2c/busses/i2c-ibm_iic.c2
-rw-r--r--drivers/i2c/busses/i2c-omap.c36
-rw-r--r--drivers/i2c/busses/i2c-pca-isa.c7
-rw-r--r--drivers/i2c/busses/i2c-pmcmsp.c4
-rw-r--r--drivers/i2c/busses/i2c-pxa.c30
-rw-r--r--drivers/i2c/busses/i2c-tiny-usb.c12
-rw-r--r--drivers/i2c/chips/Kconfig1
-rw-r--r--drivers/i2c/chips/Makefile7
-rw-r--r--drivers/i2c/chips/tps65010.c101
-rw-r--r--drivers/i2c/i2c-core.c12
14 files changed, 199 insertions, 48 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index b61f56b6f31..b04c99580d0 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -100,7 +100,7 @@ config I2C_AU1550
config I2C_BLACKFIN_TWI
tristate "Blackfin TWI I2C support"
- depends on BF534 || BF536 || BF537 || BF54x
+ depends on BF534 || BF536 || BF537
help
This is the TWI I2C device driver for Blackfin 534/536/537/54x.
This driver can also be built as a module. If so, the module
@@ -177,6 +177,8 @@ config I2C_I801
ESB2
ICH8
ICH9
+ Tolapai
+ ICH10
This driver can also be built as a module. If so, the module
will be called i2c-i801.
@@ -643,7 +645,7 @@ config I2C_PCA_ISA
config I2C_MV64XXX
tristate "Marvell mv64xxx I2C Controller"
- depends on (MV64X60 || ARCH_ORION) && EXPERIMENTAL
+ depends on (MV64X60 || PLAT_ORION) && EXPERIMENTAL
help
If you say yes to this option, support will be included for the
built-in I2C interface on the Marvell 64xxx line of host bridges.
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index 573abe44084..2fa43183d37 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -335,7 +335,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
u8 temp;
/* driver_data might come from user-space, so check it */
- if (id->driver_data > ARRAY_SIZE(chipname))
+ if (id->driver_data >= ARRAY_SIZE(chipname))
return -EINVAL;
if (amd756_ioport) {
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index cce5a614758..fde26345a37 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -382,9 +382,8 @@ static irqreturn_t i2c_davinci_isr(int this_irq, void *dev_id)
break;
case DAVINCI_I2C_IVR_ARDY:
- w = davinci_i2c_read_reg(dev, DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_STR_ARDY, 1);
- davinci_i2c_write_reg(dev, DAVINCI_I2C_STR_REG, w);
+ davinci_i2c_write_reg(dev,
+ DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_ARDY);
complete(&dev->cmd_complete);
break;
@@ -397,12 +396,9 @@ static irqreturn_t i2c_davinci_isr(int this_irq, void *dev_id)
if (dev->buf_len)
continue;
- w = davinci_i2c_read_reg(dev,
- DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_IMR_RRDY, 0);
davinci_i2c_write_reg(dev,
- DAVINCI_I2C_STR_REG,
- w);
+ DAVINCI_I2C_STR_REG,
+ DAVINCI_I2C_IMR_RRDY);
} else
dev_err(dev->dev, "RDR IRQ while no "
"data requested\n");
@@ -428,9 +424,8 @@ static irqreturn_t i2c_davinci_isr(int this_irq, void *dev_id)
break;
case DAVINCI_I2C_IVR_SCD:
- w = davinci_i2c_read_reg(dev, DAVINCI_I2C_STR_REG);
- MOD_REG_BIT(w, DAVINCI_I2C_STR_SCD, 1);
- davinci_i2c_write_reg(dev, DAVINCI_I2C_STR_REG, w);
+ davinci_i2c_write_reg(dev,
+ DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_SCD);
complete(&dev->cmd_complete);
break;
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index aa9157913b9..b0f771fe432 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -40,7 +40,9 @@
82801G (ICH7) 0x27da 32 hard yes yes yes
82801H (ICH8) 0x283e 32 hard yes yes yes
82801I (ICH9) 0x2930 32 hard yes yes yes
- Tolapai 0x5032 32 hard yes ? ?
+ Tolapai 0x5032 32 hard yes yes yes
+ ICH10 0x3a30 32 hard yes yes yes
+ ICH10 0x3a60 32 hard yes yes yes
Features supported by this driver:
Software PEC no
@@ -588,6 +590,8 @@ static struct pci_device_id i801_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_5) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_6) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TOLAPAI_1) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) },
{ 0, }
};
@@ -608,10 +612,12 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
case PCI_DEVICE_ID_INTEL_ESB2_17:
case PCI_DEVICE_ID_INTEL_ICH8_5:
case PCI_DEVICE_ID_INTEL_ICH9_6:
+ case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
+ case PCI_DEVICE_ID_INTEL_ICH10_4:
+ case PCI_DEVICE_ID_INTEL_ICH10_5:
i801_features |= FEATURE_I2C_BLOCK_READ;
/* fall through */
case PCI_DEVICE_ID_INTEL_82801DB_3:
- case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
i801_features |= FEATURE_SMBUS_PEC;
i801_features |= FEATURE_BLOCK_BUFFER;
break;
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index 7c7eb0cfece..22bb247d0e6 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -55,7 +55,7 @@ MODULE_PARM_DESC(iic_force_poll, "Force polling mode");
static int iic_force_fast;
module_param(iic_force_fast, bool, 0);
-MODULE_PARM_DESC(iic_fast_poll, "Force fast mode (400 kHz)");
+MODULE_PARM_DESC(iic_force_fast, "Force fast mode (400 kHz)");
#define DBG_LEVEL 0
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index da6639707ea..7ba31770d77 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -128,6 +128,8 @@ struct omap_i2c_dev {
size_t buf_len;
struct i2c_adapter adapter;
unsigned rev1:1;
+ unsigned idle:1;
+ u16 iestate; /* Saved interrupt register */
};
static inline void omap_i2c_write_reg(struct omap_i2c_dev *i2c_dev,
@@ -174,18 +176,30 @@ static void omap_i2c_put_clocks(struct omap_i2c_dev *dev)
}
}
-static void omap_i2c_enable_clocks(struct omap_i2c_dev *dev)
+static void omap_i2c_unidle(struct omap_i2c_dev *dev)
{
if (dev->iclk != NULL)
clk_enable(dev->iclk);
clk_enable(dev->fclk);
+ if (dev->iestate)
+ omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
+ dev->idle = 0;
}
-static void omap_i2c_disable_clocks(struct omap_i2c_dev *dev)
+static void omap_i2c_idle(struct omap_i2c_dev *dev)
{
+ u16 iv;
+
+ dev->idle = 1;
+ dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
+ omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
+ if (dev->rev1)
+ iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG); /* Read clears */
+ else
+ omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, dev->iestate);
+ clk_disable(dev->fclk);
if (dev->iclk != NULL)
clk_disable(dev->iclk);
- clk_disable(dev->fclk);
}
static int omap_i2c_init(struct omap_i2c_dev *dev)
@@ -360,7 +374,7 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
int i;
int r;
- omap_i2c_enable_clocks(dev);
+ omap_i2c_unidle(dev);
if ((r = omap_i2c_wait_for_bb(dev)) < 0)
goto out;
@@ -374,7 +388,7 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
if (r == 0)
r = num;
out:
- omap_i2c_disable_clocks(dev);
+ omap_i2c_idle(dev);
return r;
}
@@ -403,6 +417,9 @@ omap_i2c_rev1_isr(int this_irq, void *dev_id)
struct omap_i2c_dev *dev = dev_id;
u16 iv, w;
+ if (dev->idle)
+ return IRQ_NONE;
+
iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG);
switch (iv) {
case 0x00: /* None */
@@ -457,6 +474,9 @@ omap_i2c_isr(int this_irq, void *dev_id)
u16 stat, w;
int count = 0;
+ if (dev->idle)
+ return IRQ_NONE;
+
bits = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
while ((stat = (omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG))) & bits) {
dev_dbg(dev->dev, "IRQ (ISR = 0x%04x)\n", stat);
@@ -575,7 +595,7 @@ omap_i2c_probe(struct platform_device *pdev)
if ((r = omap_i2c_get_clocks(dev)) != 0)
goto err_free_mem;
- omap_i2c_enable_clocks(dev);
+ omap_i2c_unidle(dev);
if (cpu_is_omap15xx())
dev->rev1 = omap_i2c_read_reg(dev, OMAP_I2C_REV_REG) < 0x20;
@@ -610,7 +630,7 @@ omap_i2c_probe(struct platform_device *pdev)
goto err_free_irq;
}
- omap_i2c_disable_clocks(dev);
+ omap_i2c_idle(dev);
return 0;
@@ -618,7 +638,7 @@ err_free_irq:
free_irq(dev->irq, dev);
err_unuse_clocks:
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
- omap_i2c_disable_clocks(dev);
+ omap_i2c_idle(dev);
omap_i2c_put_clocks(dev);
err_free_mem:
platform_set_drvdata(pdev, NULL);
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index 5161aaf9341..496ee875eb4 100644
--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -125,6 +125,13 @@ static int __devinit pca_isa_probe(struct device *dev, unsigned int id)
dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq);
+#ifdef CONFIG_PPC_MERGE
+ if (check_legacy_ioport(base)) {
+ dev_err(dev, "I/O address %#08lx is not available\n", base);
+ goto out;
+ }
+#endif
+
if (!request_region(base, IO_SIZE, "i2c-pca-isa")) {
dev_err(dev, "I/O address %#08lx is in use\n", base);
goto out;
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index be99c02ecac..b03af5653c6 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -122,7 +122,7 @@ struct pmcmsptwi_data {
};
/* The default settings */
-const static struct pmcmsptwi_clockcfg pmcmsptwi_defclockcfg = {
+static const struct pmcmsptwi_clockcfg pmcmsptwi_defclockcfg = {
.standard = {
.filter = 0x3,
.clock = 0x1f,
@@ -133,7 +133,7 @@ const static struct pmcmsptwi_clockcfg pmcmsptwi_defclockcfg = {
},
};
-const static struct pmcmsptwi_cfg pmcmsptwi_defcfg = {
+static const struct pmcmsptwi_cfg pmcmsptwi_defcfg = {
.arbf = 0x03,
.nak = 0x03,
.add10 = 0x00,
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 2598d29fd7a..6fd2d6a84ef 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -39,6 +39,7 @@
#include <asm/io.h>
#include <asm/arch/i2c.h>
#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-gpio.h>
struct pxa_i2c {
spinlock_t lock;
@@ -138,11 +139,13 @@ static const struct bits icr_bits[] = {
PXA_BIT(ICR_UR, "UR", "ur"),
};
+#ifdef CONFIG_I2C_PXA_SLAVE
static void decode_ICR(unsigned int val)
{
decode_bits(KERN_DEBUG "ICR", icr_bits, ARRAY_SIZE(icr_bits), val);
printk("\n");
}
+#endif
static unsigned int i2c_debug = DEBUG;
@@ -997,7 +1000,14 @@ static int i2c_pxa_probe(struct platform_device *dev)
spin_lock_init(&i2c->lock);
init_waitqueue_head(&i2c->wait);
- sprintf(i2c->adap.name, "pxa_i2c-i2c.%u", dev->id);
+ /*
+ * If "dev->id" is negative we consider it as zero.
+ * The reason to do so is to avoid sysfs names that only make
+ * sense when there are multiple adapters.
+ */
+ i2c->adap.nr = dev->id != -1 ? dev->id : 0;
+ snprintf(i2c->adap.name, sizeof(i2c->adap.name), "pxa_i2c-i2c.%u",
+ i2c->adap.nr);
i2c->clk = clk_get(&dev->dev, "I2CCLK");
if (IS_ERR(i2c->clk)) {
@@ -1048,13 +1058,6 @@ static int i2c_pxa_probe(struct platform_device *dev)
i2c->adap.algo_data = i2c;
i2c->adap.dev.parent = &dev->dev;
- /*
- * If "dev->id" is negative we consider it as zero.
- * The reason to do so is to avoid sysfs names that only make
- * sense when there are multiple adapters.
- */
- i2c->adap.nr = dev->id != -1 ? dev->id : 0;
-
ret = i2c_add_numbered_adapter(&i2c->adap);
if (ret < 0) {
printk(KERN_INFO "I2C: Failed to add bus\n");
@@ -1078,6 +1081,7 @@ eadapt:
ereqirq:
clk_disable(i2c->clk);
i2c_pxa_disable(dev);
+ iounmap(i2c->reg_base);
eremap:
clk_put(i2c->clk);
eclk:
@@ -1087,7 +1091,7 @@ emalloc:
return ret;
}
-static int i2c_pxa_remove(struct platform_device *dev)
+static int __exit i2c_pxa_remove(struct platform_device *dev)
{
struct pxa_i2c *i2c = platform_get_drvdata(dev);
@@ -1101,6 +1105,7 @@ static int i2c_pxa_remove(struct platform_device *dev)
clk_put(i2c->clk);
i2c_pxa_disable(dev);
+ iounmap(i2c->reg_base);
release_mem_region(i2c->iobase, i2c->iosize);
kfree(i2c);
@@ -1109,9 +1114,10 @@ static int i2c_pxa_remove(struct platform_device *dev)
static struct platform_driver i2c_pxa_driver = {
.probe = i2c_pxa_probe,
- .remove = i2c_pxa_remove,
+ .remove = __exit_p(i2c_pxa_remove),
.driver = {
.name = "pxa2xx-i2c",
+ .owner = THIS_MODULE,
},
};
@@ -1120,9 +1126,9 @@ static int __init i2c_adap_pxa_init(void)
return platform_driver_register(&i2c_pxa_driver);
}
-static void i2c_adap_pxa_exit(void)
+static void __exit i2c_adap_pxa_exit(void)
{
- return platform_driver_unregister(&i2c_pxa_driver);
+ platform_driver_unregister(&i2c_pxa_driver);
}
MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
index cb9abe7565a..b1c050ff311 100644
--- a/drivers/i2c/busses/i2c-tiny-usb.c
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -131,11 +131,15 @@ static const struct i2c_algorithm usb_algorithm = {
/* ----- begin of usb layer ---------------------------------------------- */
-/* The usb i2c interface uses a vid/pid pair donated by */
-/* Future Technology Devices International Ltd. */
+/*
+ * Initially the usb i2c interface uses a vid/pid pair donated by
+ * Future Technology Devices International Ltd., later a pair was
+ * bought from EZPrototypes
+ */
static struct usb_device_id i2c_tiny_usb_table [] = {
- { USB_DEVICE(0x0403, 0xc631) },
- { } /* Terminating entry */
+ { USB_DEVICE(0x0403, 0xc631) }, /* FTDI */
+ { USB_DEVICE(0x1c40, 0x0534) }, /* EZPrototypes */
+ { } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, i2c_tiny_usb_table);
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index b21593f9358..2da2edfa68e 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -93,6 +93,7 @@ config ISP1301_OMAP
config TPS65010
tristate "TPS6501x Power Management chips"
+ depends on HAVE_GPIO_LIB
default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
help
If you say yes here you get support for the TPS6501x series of
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index 501f00cea78..e47aca0ca5a 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -1,6 +1,13 @@
#
# Makefile for miscellaneous I2C chip drivers.
#
+# Think twice before you add a new driver to this directory.
+# Device drivers are better grouped according to the functionality they
+# implement rather than to the bus they are connected to. In particular:
+# * Hardware monitoring chip drivers go to drivers/hwmon
+# * RTC chip drivers go to drivers/rtc
+# * I/O expander drivers go to drivers/gpio
+#
obj-$(CONFIG_DS1682) += ds1682.o
obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index 4154a910885..b67f69c2e7f 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -30,9 +30,13 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/mutex.h>
+#include <linux/platform_device.h>
#include <linux/i2c/tps65010.h>
+#include <asm/gpio.h>
+
+
/*-------------------------------------------------------------------------*/
#define DRIVER_VERSION "2 May 2005"
@@ -84,7 +88,9 @@ struct tps65010 {
u8 chgstatus, regstatus, chgconf;
u8 nmask1, nmask2;
- /* not currently tracking GPIO state */
+ u8 outmask;
+ struct gpio_chip chip;
+ struct platform_device *leds;
};
#define POWER_POLL_DELAY msecs_to_jiffies(5000)
@@ -449,12 +455,72 @@ static irqreturn_t tps65010_irq(int irq, void *_tps)
/*-------------------------------------------------------------------------*/
+/* offsets 0..3 == GPIO1..GPIO4
+ * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
+ */
+static void
+tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if (offset < 4)
+ tps65010_set_gpio_out_value(offset + 1, value);
+ else
+ tps65010_set_led(offset - 3, value ? ON : OFF);
+}
+
+static int
+tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
+{
+ /* GPIOs may be input-only */
+ if (offset < 4) {
+ struct tps65010 *tps;
+
+ tps = container_of(chip, struct tps65010, chip);
+ if (!(tps->outmask & (1 << offset)))
+ return -EINVAL;
+ tps65010_set_gpio_out_value(offset + 1, value);
+ } else
+ tps65010_set_led(offset - 3, value ? ON : OFF);
+
+ return 0;
+}
+
+static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ int value;
+ struct tps65010 *tps;
+
+ tps = container_of(chip, struct tps65010, chip);
+
+ if (offset < 4) {
+ value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
+ if (value < 0)
+ return 0;
+ if (value & (1 << (offset + 4))) /* output */
+ return !(value & (1 << offset));
+ else /* input */
+ return (value & (1 << offset));
+ }
+
+ /* REVISIT we *could* report LED1/nPG and LED2 state ... */
+ return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
static struct tps65010 *the_tps;
static int __exit tps65010_remove(struct i2c_client *client)
{
struct tps65010 *tps = i2c_get_clientdata(client);
+ struct tps65010_board *board = client->dev.platform_data;
+ if (board && board->teardown) {
+ int status = board->teardown(client, board->context);
+ if (status < 0)
+ dev_dbg(&client->dev, "board %s %s err %d\n",
+ "teardown", client->name, status);
+ }
if (client->irq > 0)
free_irq(client->irq, tps);
cancel_delayed_work(&tps->work);
@@ -469,6 +535,7 @@ static int tps65010_probe(struct i2c_client *client)
{
struct tps65010 *tps;
int status;
+ struct tps65010_board *board = client->dev.platform_data;
if (the_tps) {
dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
@@ -577,6 +644,38 @@ static int tps65010_probe(struct i2c_client *client)
tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
tps, DEBUG_FOPS);
+
+ /* optionally register GPIOs */
+ if (board && board->base > 0) {
+ tps->outmask = board->outmask;
+
+ tps->chip.label = client->name;
+
+ tps->chip.set = tps65010_gpio_set;
+ tps->chip.direction_output = tps65010_output;
+
+ /* NOTE: only partial support for inputs; nyet IRQs */
+ tps->chip.get = tps65010_gpio_get;
+
+ tps->chip.base = board->base;
+ tps->chip.ngpio = 6;
+ tps->chip.can_sleep = 1;
+
+ status = gpiochip_add(&tps->chip);
+ if (status < 0)
+ dev_err(&client->dev, "can't add gpiochip, err %d\n",
+ status);
+ else if (board->setup) {
+ status = board->setup(client, board->context);
+ if (status < 0) {
+ dev_dbg(&client->dev,
+ "board %s %s err %d\n",
+ "setup", client->name, status);
+ status = 0;
+ }
+ }
+ }
+
return 0;
fail1:
kfree(tps);
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 96da22e9a5a..e186df65711 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -35,8 +35,8 @@
#include <linux/completion.h>
#include <linux/hardirq.h>
#include <linux/irqflags.h>
+#include <linux/semaphore.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include "i2c-core.h"
@@ -90,12 +90,16 @@ static int i2c_device_probe(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct i2c_driver *driver = to_i2c_driver(dev->driver);
+ int status;
if (!driver->probe)
return -ENODEV;
client->driver = driver;
dev_dbg(dev, "probe\n");
- return driver->probe(client);
+ status = driver->probe(client);
+ if (status)
+ client->driver = NULL;
+ return status;
}
static int i2c_device_remove(struct device *dev)
@@ -485,8 +489,8 @@ EXPORT_SYMBOL(i2c_add_adapter);
* Context: can sleep
*
* This routine is used to declare an I2C adapter when its bus number
- * matters. Example: for I2C adapters from system-on-chip CPUs, or
- * otherwise built in to the system's mainboard, and where i2c_board_info
+ * matters. For example, use it for I2C adapters from system-on-chip CPUs,
+ * or otherwise built in to the system's mainboard, and where i2c_board_info
* is used to properly configure I2C devices.
*
* If no devices have pre-been declared for this bus, then be sure to
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-08 02:13:34 +0000