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i2c/tps65010: New-style driver updates, part 2

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Switch the tps65010 driver into a "new-style" I2C driver, and convert all
of its in-tree users (board support for OSK, H2, H3) accordingly.

That accounts for most of the board-specific code in this driver; the
rest of that code is now moved into board-specific initcalls.

Also remove some of the many now-superfluous #includes.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
David Brownell
2007-10-13 23:56:30 +02:00
committed by Jean Delvare
parent b5067f8ff3
commit 8056c6cb2b
4 changed files with 180 additions and 150 deletions
Download Patch File Download Diff File Expand all files Collapse all files

182
drivers/i2c/chips/tps65010.c
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@@ -24,20 +24,13 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/suspend.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/mutex.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mux.h>
#include <asm/arch/tps65010.h>
/*-------------------------------------------------------------------------*/
@@ -48,10 +41,6 @@
MODULE_DESCRIPTION("TPS6501x Power Management Driver");
MODULE_LICENSE("GPL");
static unsigned short normal_i2c[] = { 0x48, /* 0x49, */ I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
static struct i2c_driver tps65010_driver;
/*-------------------------------------------------------------------------*/
@@ -79,10 +68,8 @@ enum tps_model {
};
struct tps65010 {
struct i2c_client c;
struct i2c_client *client;
struct mutex lock;
int irq;
struct delayed_work work;
struct dentry *file;
unsigned charging:1;
@@ -445,7 +432,7 @@ static void tps65010_work(struct work_struct *work)
}
if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
enable_irq(tps->irq);
enable_irq(tps->client->irq);
mutex_unlock(&tps->lock);
}
@@ -464,116 +451,75 @@ static irqreturn_t tps65010_irq(int irq, void *_tps)
static struct tps65010 *the_tps;
static int __exit tps65010_detach_client(struct i2c_client *client)
static int __exit tps65010_remove(struct i2c_client *client)
{
struct tps65010 *tps;
struct tps65010 *tps = i2c_get_clientdata(client);
tps = container_of(client, struct tps65010, c);
free_irq(tps->irq, tps);
#ifdef CONFIG_ARM
if (machine_is_omap_h2())
omap_free_gpio(58);
if (machine_is_omap_osk())
omap_free_gpio(OMAP_MPUIO(1));
#endif
if (client->irq > 0)
free_irq(client->irq, tps);
cancel_delayed_work(&tps->work);
flush_scheduled_work();
debugfs_remove(tps->file);
if (i2c_detach_client(client) == 0)
kfree(tps);
kfree(tps);
the_tps = NULL;
return 0;
}
static int tps65010_noscan(struct i2c_adapter *bus)
{
/* pure paranoia, in case someone adds another i2c bus
* after our init section's gone...
*/
return -ENODEV;
}
/* no error returns, they'd just make bus scanning stop */
static int __init
tps65010_probe(struct i2c_adapter *bus, int address, int kind)
static int tps65010_probe(struct i2c_client *client)
{
struct tps65010 *tps;
int status;
unsigned long irqflags;
struct i2c_client *client;
if (the_tps) {
dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME);
return 0;
dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
return -ENODEV;
}
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EINVAL;
tps = kzalloc(sizeof *tps, GFP_KERNEL);
if (!tps)
return 0;
return -ENOMEM;
mutex_init(&tps->lock);
INIT_DELAYED_WORK(&tps->work, tps65010_work);
tps->irq = -1;
tps->c.addr = address;
tps->c.adapter = bus;
tps->c.driver = &tps65010_driver;
strlcpy(tps->c.name, DRIVER_NAME, I2C_NAME_SIZE);
tps->client = client = &tps->c;
tps->client = client;
status = i2c_attach_client(client);
if (status < 0) {
dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
DRIVER_NAME, address, status);
if (strcmp(client->name, "tps65010") == 0)
tps->model = TPS65010;
else if (strcmp(client->name, "tps65011") == 0)
tps->model = TPS65011;
else if (strcmp(client->name, "tps65012") == 0)
tps->model = TPS65012;
else if (strcmp(client->name, "tps65013") == 0)
tps->model = TPS65013;
else {
dev_warn(&client->dev, "unknown chip '%s'\n", client->name);
status = -ENODEV;
goto fail1;
}
/* the IRQ is active low, but many gpio lines can't support that
* so this driver can use falling-edge triggers instead.
* so this driver uses falling-edge triggers instead.
*/
irqflags = IRQF_SAMPLE_RANDOM;
#ifdef CONFIG_ARM
if (machine_is_omap_h2()) {
tps->model = TPS65010;
omap_cfg_reg(W4_GPIO58);
tps->irq = OMAP_GPIO_IRQ(58);
omap_request_gpio(58);
omap_set_gpio_direction(58, 1);
irqflags |= IRQF_TRIGGER_FALLING;
}
if (machine_is_omap_osk()) {
tps->model = TPS65010;
// omap_cfg_reg(U19_1610_MPUIO1);
tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1));
omap_request_gpio(OMAP_MPUIO(1));
omap_set_gpio_direction(OMAP_MPUIO(1), 1);
irqflags |= IRQF_TRIGGER_FALLING;
}
if (machine_is_omap_h3()) {
tps->model = TPS65013;
// FIXME set up this board's IRQ ...
}
#endif
if (tps->irq > 0) {
status = request_irq(tps->irq, tps65010_irq,
irqflags, DRIVER_NAME, tps);
if (client->irq > 0) {
status = request_irq(client->irq, tps65010_irq,
IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_FALLING,
DRIVER_NAME, tps);
if (status < 0) {
dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
tps->irq, status);
i2c_detach_client(client);
client->irq, status);
goto fail1;
}
#ifdef CONFIG_ARM
/* annoying race here, ideally we'd have an option
* to claim the irq now and enable it later.
* FIXME genirq IRQF_NOAUTOEN now solves that ...
*/
disable_irq(tps->irq);
disable_irq(client->irq);
set_bit(FLAG_IRQ_ENABLE, &tps->flags);
#endif
} else
printk(KERN_WARNING "%s: IRQ not configured!\n",
DRIVER_NAME);
dev_warn(&client->dev, "IRQ not configured!\n");
switch (tps->model) {
@@ -602,7 +548,6 @@ tps65010_probe(struct i2c_adapter *bus, int address, int kind)
i2c_smbus_read_byte_data(client, TPS_DEFGPIO),
i2c_smbus_read_byte_data(client, TPS_MASK3));
tps65010_driver.attach_adapter = tps65010_noscan;
the_tps = tps;
#if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
@@ -635,22 +580,15 @@ tps65010_probe(struct i2c_adapter *bus, int address, int kind)
return 0;
fail1:
kfree(tps);
return 0;
}
static int __init tps65010_scan_bus(struct i2c_adapter *bus)
{
if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA))
return -EINVAL;
return i2c_probe(bus, &addr_data, tps65010_probe);
return status;
}
static struct i2c_driver tps65010_driver = {
.driver = {
.name = "tps65010",
},
.attach_adapter = tps65010_scan_bus,
.detach_client = __exit_p(tps65010_detach_client),
.probe = tps65010_probe,
.remove = __exit_p(tps65010_remove),
};
/*-------------------------------------------------------------------------*/
@@ -1014,52 +952,6 @@ static int __init tps_init(void)
msleep(10);
}
#ifdef CONFIG_ARM
if (machine_is_omap_osk()) {
// FIXME: More should be placed in the initialization code
// of the submodules (DSP, ethernet, power management,
// board-osk.c). Careful: I2C is initialized "late".
/* Let LED1 (D9) blink */
tps65010_set_led(LED1, BLINK);
/* Disable LED 2 (D2) */
tps65010_set_led(LED2, OFF);
/* Set GPIO 1 HIGH to disable VBUS power supply;
* OHCI driver powers it up/down as needed.
*/
tps65010_set_gpio_out_value(GPIO1, HIGH);
/* Set GPIO 2 low to turn on LED D3 */
tps65010_set_gpio_out_value(GPIO2, HIGH);
/* Set GPIO 3 low to take ethernet out of reset */
tps65010_set_gpio_out_value(GPIO3, LOW);
/* gpio4 for VDD_DSP */
/* Enable LOW_PWR */
tps65010_set_low_pwr(ON);
/* Switch VLDO2 to 3.0V for AIC23 */
tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE);
} else if (machine_is_omap_h2()) {
/* gpio3 for SD, gpio4 for VDD_DSP */
/* Enable LOW_PWR */
tps65010_set_low_pwr(ON);
} else if (machine_is_omap_h3()) {
/* gpio4 for SD, gpio3 for VDD_DSP */
#ifdef CONFIG_PM
/* Enable LOW_PWR */
tps65013_set_low_pwr(ON);
#endif
}
#endif
return status;
}
/* NOTE: this MUST be initialized before the other parts of the system