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-rw-r--r--drivers/i2c/chips/Kconfig11
-rw-r--r--drivers/i2c/chips/Makefile1
-rw-r--r--drivers/i2c/chips/isp1301_omap.c141
-rw-r--r--drivers/i2c/chips/mcu_mpc8349emitx.c209
-rw-r--r--drivers/i2c/chips/tps65010.c12
5 files changed, 285 insertions, 89 deletions
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index a95cb9465d6..17356827b93 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -172,4 +172,15 @@ config MENELAUS
and other features that are often used in portable devices like
cell phones and PDAs.
+config MCU_MPC8349EMITX
+ tristate "MPC8349E-mITX MCU driver"
+ depends on I2C && PPC_83xx
+ select GENERIC_GPIO
+ select ARCH_REQUIRE_GPIOLIB
+ help
+ Say Y here to enable soft power-off functionality on the Freescale
+ boards with the MPC8349E-mITX-compatible MCU chips. This driver will
+ also register MCU GPIOs with the generic GPIO API, so you'll able
+ to use MCU pins as GPIOs.
+
endmenu
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index 39e3e69ed12..ca520fa143d 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
+obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mpc8349emitx.o
ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index 4655b794ebe..28902ebd553 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -49,10 +49,9 @@ MODULE_LICENSE("GPL");
struct isp1301 {
struct otg_transceiver otg;
- struct i2c_client client;
+ struct i2c_client *client;
void (*i2c_release)(struct device *dev);
- int irq;
int irq_type;
u32 last_otg_ctrl;
@@ -138,14 +137,6 @@ static inline void notresponding(struct isp1301 *isp)
/*-------------------------------------------------------------------------*/
-/* only two addresses possible */
-#define ISP_BASE 0x2c
-static unsigned short normal_i2c[] = {
- ISP_BASE, ISP_BASE + 1,
- I2C_CLIENT_END };
-
-I2C_CLIENT_INSMOD;
-
static struct i2c_driver isp1301_driver;
/* smbus apis are used for portability */
@@ -153,25 +144,25 @@ static struct i2c_driver isp1301_driver;
static inline u8
isp1301_get_u8(struct isp1301 *isp, u8 reg)
{
- return i2c_smbus_read_byte_data(&isp->client, reg + 0);
+ return i2c_smbus_read_byte_data(isp->client, reg + 0);
}
static inline int
isp1301_get_u16(struct isp1301 *isp, u8 reg)
{
- return i2c_smbus_read_word_data(&isp->client, reg);
+ return i2c_smbus_read_word_data(isp->client, reg);
}
static inline int
isp1301_set_bits(struct isp1301 *isp, u8 reg, u8 bits)
{
- return i2c_smbus_write_byte_data(&isp->client, reg + 0, bits);
+ return i2c_smbus_write_byte_data(isp->client, reg + 0, bits);
}
static inline int
isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits)
{
- return i2c_smbus_write_byte_data(&isp->client, reg + 1, bits);
+ return i2c_smbus_write_byte_data(isp->client, reg + 1, bits);
}
/*-------------------------------------------------------------------------*/
@@ -349,10 +340,10 @@ isp1301_defer_work(struct isp1301 *isp, int work)
int status;
if (isp && !test_and_set_bit(work, &isp->todo)) {
- (void) get_device(&isp->client.dev);
+ (void) get_device(&isp->client->dev);
status = schedule_work(&isp->work);
if (!status && !isp->working)
- dev_vdbg(&isp->client.dev,
+ dev_vdbg(&isp->client->dev,
"work item %d may be lost\n", work);
}
}
@@ -1135,7 +1126,7 @@ isp1301_work(struct work_struct *work)
/* transfer state from otg engine to isp1301 */
if (test_and_clear_bit(WORK_UPDATE_ISP, &isp->todo)) {
otg_update_isp(isp);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
#endif
/* transfer state from isp1301 to otg engine */
@@ -1143,7 +1134,7 @@ isp1301_work(struct work_struct *work)
u8 stat = isp1301_clear_latch(isp);
isp_update_otg(isp, stat);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_HOST_RESUME, &isp->todo)) {
@@ -1178,7 +1169,7 @@ isp1301_work(struct work_struct *work)
}
host_resume(isp);
// mdelay(10);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_TIMER, &isp->todo)) {
@@ -1187,15 +1178,15 @@ isp1301_work(struct work_struct *work)
if (!stop)
mod_timer(&isp->timer, jiffies + TIMER_JIFFIES);
#endif
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (isp->todo)
- dev_vdbg(&isp->client.dev,
+ dev_vdbg(&isp->client->dev,
"work done, todo = 0x%lx\n",
isp->todo);
if (stop) {
- dev_dbg(&isp->client.dev, "stop\n");
+ dev_dbg(&isp->client->dev, "stop\n");
break;
}
} while (isp->todo);
@@ -1219,7 +1210,7 @@ static void isp1301_release(struct device *dev)
{
struct isp1301 *isp;
- isp = container_of(dev, struct isp1301, client.dev);
+ isp = dev_get_drvdata(dev);
/* ugly -- i2c hijacks our memory hook to wait_for_completion() */
if (isp->i2c_release)
@@ -1229,15 +1220,15 @@ static void isp1301_release(struct device *dev)
static struct isp1301 *the_transceiver;
-static int isp1301_detach_client(struct i2c_client *i2c)
+static int __exit isp1301_remove(struct i2c_client *i2c)
{
struct isp1301 *isp;
- isp = container_of(i2c, struct isp1301, client);
+ isp = i2c_get_clientdata(i2c);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
- free_irq(isp->irq, isp);
+ free_irq(i2c->irq, isp);
#ifdef CONFIG_USB_OTG
otg_unbind(isp);
#endif
@@ -1252,7 +1243,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
put_device(&i2c->dev);
the_transceiver = 0;
- return i2c_detach_client(i2c);
+ return 0;
}
/*-------------------------------------------------------------------------*/
@@ -1285,7 +1276,7 @@ static int isp1301_otg_enable(struct isp1301 *isp)
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
INTR_VBUS_VLD | INTR_SESS_VLD | INTR_ID_GND);
- dev_info(&isp->client.dev, "ready for dual-role USB ...\n");
+ dev_info(&isp->client->dev, "ready for dual-role USB ...\n");
return 0;
}
@@ -1310,7 +1301,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
#ifdef CONFIG_USB_OTG
isp->otg.host = host;
- dev_dbg(&isp->client.dev, "registered host\n");
+ dev_dbg(&isp->client->dev, "registered host\n");
host_suspend(isp);
if (isp->otg.gadget)
return isp1301_otg_enable(isp);
@@ -1325,7 +1316,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
if (machine_is_omap_h2())
isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0);
- dev_info(&isp->client.dev, "A-Host sessions ok\n");
+ dev_info(&isp->client->dev, "A-Host sessions ok\n");
isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING,
INTR_ID_GND);
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
@@ -1343,7 +1334,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
return 0;
#else
- dev_dbg(&isp->client.dev, "host sessions not allowed\n");
+ dev_dbg(&isp->client->dev, "host sessions not allowed\n");
return -EINVAL;
#endif
@@ -1370,7 +1361,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
#ifdef CONFIG_USB_OTG
isp->otg.gadget = gadget;
- dev_dbg(&isp->client.dev, "registered gadget\n");
+ dev_dbg(&isp->client->dev, "registered gadget\n");
/* gadget driver may be suspended until vbus_connect () */
if (isp->otg.host)
return isp1301_otg_enable(isp);
@@ -1395,7 +1386,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
INTR_SESS_VLD);
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
INTR_VBUS_VLD);
- dev_info(&isp->client.dev, "B-Peripheral sessions ok\n");
+ dev_info(&isp->client->dev, "B-Peripheral sessions ok\n");
dump_regs(isp, __func__);
/* If this has a Mini-AB connector, this mode is highly
@@ -1408,7 +1399,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
return 0;
#else
- dev_dbg(&isp->client.dev, "peripheral sessions not allowed\n");
+ dev_dbg(&isp->client->dev, "peripheral sessions not allowed\n");
return -EINVAL;
#endif
}
@@ -1508,12 +1499,10 @@ isp1301_start_hnp(struct otg_transceiver *dev)
/*-------------------------------------------------------------------------*/
-/* no error returns, they'd just make bus scanning stop */
-static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
+static int __init isp1301_probe(struct i2c_client *i2c)
{
int status;
struct isp1301 *isp;
- struct i2c_client *i2c;
if (the_transceiver)
return 0;
@@ -1527,37 +1516,19 @@ static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
isp->timer.function = isp1301_timer;
isp->timer.data = (unsigned long) isp;
- isp->irq = -1;
- isp->client.addr = address;
- i2c_set_clientdata(&isp->client, isp);
- isp->client.adapter = bus;
- isp->client.driver = &isp1301_driver;
- strlcpy(isp->client.name, DRIVER_NAME, I2C_NAME_SIZE);
- i2c = &isp->client;
-
- /* if this is a true probe, verify the chip ... */
- if (kind < 0) {
- status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
- if (status != I2C_VENDOR_ID_PHILIPS) {
- dev_dbg(&bus->dev, "addr %d not philips id: %d\n",
- address, status);
- goto fail1;
- }
- status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
- if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
- dev_dbg(&bus->dev, "%d not isp1301, %d\n",
- address, status);
- goto fail1;
- }
- }
+ i2c_set_clientdata(i2c, isp);
+ isp->client = i2c;
- status = i2c_attach_client(i2c);
- if (status < 0) {
- dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
- DRIVER_NAME, address, status);
-fail1:
- kfree(isp);
- return 0;
+ /* verify the chip (shouldn't be necesary) */
+ status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
+ if (status != I2C_VENDOR_ID_PHILIPS) {
+ dev_dbg(&i2c->dev, "not philips id: %d\n", status);
+ goto fail;
+ }
+ status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
+ if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
+ dev_dbg(&i2c->dev, "not isp1301, %d\n", status);
+ goto fail;
}
isp->i2c_release = i2c->dev.release;
i2c->dev.release = isp1301_release;
@@ -1586,7 +1557,7 @@ fail1:
status = otg_bind(isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't bind OTG\n");
- goto fail2;
+ goto fail;
}
#endif
@@ -1599,26 +1570,21 @@ fail1:
/* IRQ wired at M14 */
omap_cfg_reg(M14_1510_GPIO2);
- isp->irq = OMAP_GPIO_IRQ(2);
if (gpio_request(2, "isp1301") == 0)
gpio_direction_input(2);
isp->irq_type = IRQF_TRIGGER_FALLING;
}
isp->irq_type |= IRQF_SAMPLE_RANDOM;
- status = request_irq(isp->irq, isp1301_irq,
+ status = request_irq(i2c->irq, isp1301_irq,
isp->irq_type, DRIVER_NAME, isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",
- isp->irq, status);
-#ifdef CONFIG_USB_OTG
-fail2:
-#endif
- i2c_detach_client(i2c);
- goto fail1;
+ i2c->irq, status);
+ goto fail;
}
- isp->otg.dev = &isp->client.dev;
+ isp->otg.dev = &i2c->dev;
isp->otg.label = DRIVER_NAME;
isp->otg.set_host = isp1301_set_host,
@@ -1649,22 +1615,25 @@ fail2:
status);
return 0;
-}
-static int isp1301_scan_bus(struct i2c_adapter *bus)
-{
- if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_READ_WORD_DATA))
- return -EINVAL;
- return i2c_probe(bus, &addr_data, isp1301_probe);
+fail:
+ kfree(isp);
+ return -ENODEV;
}
+static const struct i2c_device_id isp1301_id[] = {
+ { "isp1301_omap", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, isp1301_id);
+
static struct i2c_driver isp1301_driver = {
.driver = {
.name = "isp1301_omap",
},
- .attach_adapter = isp1301_scan_bus,
- .detach_client = isp1301_detach_client,
+ .probe = isp1301_probe,
+ .remove = __exit_p(isp1301_remove),
+ .id_table = isp1301_id,
};
/*-------------------------------------------------------------------------*/
diff --git a/drivers/i2c/chips/mcu_mpc8349emitx.c b/drivers/i2c/chips/mcu_mpc8349emitx.c
new file mode 100644
index 00000000000..82a9bcb858b
--- /dev/null
+++ b/drivers/i2c/chips/mcu_mpc8349emitx.c
@@ -0,0 +1,209 @@
+/*
+ * Power Management and GPIO expander driver for MPC8349E-mITX-compatible MCU
+ *
+ * Copyright (c) 2008 MontaVista Software, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+
+/*
+ * I don't have specifications for the MCU firmware, I found this register
+ * and bits positions by the trial&error method.
+ */
+#define MCU_REG_CTRL 0x20
+#define MCU_CTRL_POFF 0x40
+
+#define MCU_NUM_GPIO 2
+
+struct mcu {
+ struct mutex lock;
+ struct device_node *np;
+ struct i2c_client *client;
+ struct of_gpio_chip of_gc;
+ u8 reg_ctrl;
+};
+
+static struct mcu *glob_mcu;
+
+static void mcu_power_off(void)
+{
+ struct mcu *mcu = glob_mcu;
+
+ pr_info("Sending power-off request to the MCU...\n");
+ mutex_lock(&mcu->lock);
+ i2c_smbus_write_byte_data(glob_mcu->client, MCU_REG_CTRL,
+ mcu->reg_ctrl | MCU_CTRL_POFF);
+ mutex_unlock(&mcu->lock);
+}
+
+static void mcu_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ struct of_gpio_chip *of_gc = to_of_gpio_chip(gc);
+ struct mcu *mcu = container_of(of_gc, struct mcu, of_gc);
+ u8 bit = 1 << (4 + gpio);
+
+ mutex_lock(&mcu->lock);
+ if (val)
+ mcu->reg_ctrl &= ~bit;
+ else
+ mcu->reg_ctrl |= bit;
+
+ i2c_smbus_write_byte_data(mcu->client, MCU_REG_CTRL, mcu->reg_ctrl);
+ mutex_unlock(&mcu->lock);
+}
+
+static int mcu_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ mcu_gpio_set(gc, gpio, val);
+ return 0;
+}
+
+static int mcu_gpiochip_add(struct mcu *mcu)
+{
+ struct device_node *np;
+ struct of_gpio_chip *of_gc = &mcu->of_gc;
+ struct gpio_chip *gc = &of_gc->gc;
+ int ret;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,mcu-mpc8349emitx");
+ if (!np)
+ return -ENODEV;
+
+ gc->owner = THIS_MODULE;
+ gc->label = np->full_name;
+ gc->can_sleep = 1;
+ gc->ngpio = MCU_NUM_GPIO;
+ gc->base = -1;
+ gc->set = mcu_gpio_set;
+ gc->direction_output = mcu_gpio_dir_out;
+ of_gc->gpio_cells = 2;
+ of_gc->xlate = of_gpio_simple_xlate;
+
+ np->data = of_gc;
+ mcu->np = np;
+
+ /*
+ * We don't want to lose the node, its ->data and ->full_name...
+ * So, if succeeded, we don't put the node here.
+ */
+ ret = gpiochip_add(gc);
+ if (ret)
+ of_node_put(np);
+ return ret;
+}
+
+static int mcu_gpiochip_remove(struct mcu *mcu)
+{
+ int ret;
+
+ ret = gpiochip_remove(&mcu->of_gc.gc);
+ if (ret)
+ return ret;
+ of_node_put(mcu->np);
+
+ return 0;
+}
+
+static int __devinit mcu_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mcu *mcu;
+ int ret;
+
+ mcu = kzalloc(sizeof(*mcu), GFP_KERNEL);
+ if (!mcu)
+ return -ENOMEM;
+
+ mutex_init(&mcu->lock);
+ mcu->client = client;
+ i2c_set_clientdata(client, mcu);
+
+ ret = i2c_smbus_read_byte_data(mcu->client, MCU_REG_CTRL);
+ if (ret < 0)
+ goto err;
+ mcu->reg_ctrl = ret;
+
+ ret = mcu_gpiochip_add(mcu);
+ if (ret)
+ goto err;
+
+ /* XXX: this is potentially racy, but there is no lock for ppc_md */
+ if (!ppc_md.power_off) {
+ glob_mcu = mcu;
+ ppc_md.power_off = mcu_power_off;
+ dev_info(&client->dev, "will provide power-off service\n");
+ }
+
+ return 0;
+err:
+ kfree(mcu);
+ return ret;
+}
+
+static int __devexit mcu_remove(struct i2c_client *client)
+{
+ struct mcu *mcu = i2c_get_clientdata(client);
+ int ret;
+
+ if (glob_mcu == mcu) {
+ ppc_md.power_off = NULL;
+ glob_mcu = NULL;
+ }
+
+ ret = mcu_gpiochip_remove(mcu);
+ if (ret)
+ return ret;
+ i2c_set_clientdata(client, NULL);
+ kfree(mcu);
+ return 0;
+}
+
+static const struct i2c_device_id mcu_ids[] = {
+ { "mcu-mpc8349emitx", },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, mcu_ids);
+
+static struct i2c_driver mcu_driver = {
+ .driver = {
+ .name = "mcu-mpc8349emitx",
+ .owner = THIS_MODULE,
+ },
+ .probe = mcu_probe,
+ .remove = __devexit_p(mcu_remove),
+ .id_table = mcu_ids,
+};
+
+static int __init mcu_init(void)
+{
+ return i2c_add_driver(&mcu_driver);
+}
+module_init(mcu_init);
+
+static void __exit mcu_exit(void)
+{
+ i2c_del_driver(&mcu_driver);
+}
+module_exit(mcu_exit);
+
+MODULE_DESCRIPTION("Power Management and GPIO expander driver for "
+ "MPC8349E-mITX-compatible MCU");
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index cf02e8fceb4..acf8b9d5f57 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -456,14 +456,17 @@ 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)
+ * offset 6 == vibrator motor driver
*/
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
+ else if (offset < 6)
tps65010_set_led(offset - 3, value ? ON : OFF);
+ else
+ tps65010_set_vib(value);
}
static int
@@ -477,8 +480,10 @@ tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
if (!(tps->outmask & (1 << offset)))
return -EINVAL;
tps65010_set_gpio_out_value(offset + 1, value);
- } else
+ } else if (offset < 6)
tps65010_set_led(offset - 3, value ? ON : OFF);
+ else
+ tps65010_set_vib(value);
return 0;
}
@@ -646,7 +651,7 @@ static int tps65010_probe(struct i2c_client *client,
tps->chip.get = tps65010_gpio_get;
tps->chip.base = board->base;
- tps->chip.ngpio = 6;
+ tps->chip.ngpio = 7;
tps->chip.can_sleep = 1;
status = gpiochip_add(&tps->chip);
@@ -675,6 +680,7 @@ static const struct i2c_device_id tps65010_id[] = {
{ "tps65011", TPS65011 },
{ "tps65012", TPS65012 },
{ "tps65013", TPS65013 },
+ { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */
{ }
};
MODULE_DEVICE_TABLE(i2c, tps65010_id);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-04 22:31:42 +0000