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path: root/drivers/staging/nvec/nvec.c
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Diffstat (limited to 'drivers/staging/nvec/nvec.c')
-rw-r--r--drivers/staging/nvec/nvec.c85
1 files changed, 34 insertions, 51 deletions
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 3c60088871e0..695ea35f75b0 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -97,7 +97,7 @@ static struct mfd_cell nvec_devices[] = {
.id = 2,
},
{
- .name = "nvec-leds",
+ .name = "nvec-paz00",
.id = 1,
},
};
@@ -127,12 +127,14 @@ EXPORT_SYMBOL_GPL(nvec_register_notifier);
static int nvec_status_notifier(struct notifier_block *nb,
unsigned long event_type, void *data)
{
+ struct nvec_chip *nvec = container_of(nb, struct nvec_chip,
+ nvec_status_notifier);
unsigned char *msg = (unsigned char *)data;
if (event_type != NVEC_CNTL)
return NOTIFY_DONE;
- printk(KERN_WARNING "unhandled msg type %ld\n", event_type);
+ dev_warn(nvec->dev, "unhandled msg type %ld\n", event_type);
print_hex_dump(KERN_WARNING, "payload: ", DUMP_PREFIX_NONE, 16, 1,
msg, msg[1] + 2, true);
@@ -675,7 +677,7 @@ static void tegra_init_i2c_slave(struct nvec_chip *nvec)
{
u32 val;
- clk_enable(nvec->i2c_clk);
+ clk_prepare_enable(nvec->i2c_clk);
tegra_periph_reset_assert(nvec->i2c_clk);
udelay(2);
@@ -695,15 +697,17 @@ static void tegra_init_i2c_slave(struct nvec_chip *nvec)
enable_irq(nvec->irq);
- clk_disable(nvec->i2c_clk);
+ clk_disable_unprepare(nvec->i2c_clk);
}
+#ifdef CONFIG_PM_SLEEP
static void nvec_disable_i2c_slave(struct nvec_chip *nvec)
{
disable_irq(nvec->irq);
writel(I2C_SL_NEWSL | I2C_SL_NACK, nvec->base + I2C_SL_CNFG);
- clk_disable(nvec->i2c_clk);
+ clk_disable_unprepare(nvec->i2c_clk);
}
+#endif
static void nvec_power_off(void)
{
@@ -719,10 +723,9 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
struct nvec_chip *nvec;
struct nvec_msg *msg;
struct resource *res;
- struct resource *iomem;
void __iomem *base;
- nvec = kzalloc(sizeof(struct nvec_chip), GFP_KERNEL);
+ nvec = devm_kzalloc(&pdev->dev, sizeof(struct nvec_chip), GFP_KERNEL);
if (nvec == NULL) {
dev_err(&pdev->dev, "failed to reserve memory\n");
return -ENOMEM;
@@ -737,15 +740,15 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
nvec->gpio = of_get_named_gpio(nvec->dev->of_node, "request-gpios", 0);
if (nvec->gpio < 0) {
dev_err(&pdev->dev, "no gpio specified");
- goto failed;
+ return -ENODEV;
}
if (of_property_read_u32(nvec->dev->of_node, "slave-addr", &nvec->i2c_addr)) {
dev_err(&pdev->dev, "no i2c address specified");
- goto failed;
+ return -ENODEV;
}
} else {
dev_err(&pdev->dev, "no platform data\n");
- goto failed;
+ return -ENODEV;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -754,13 +757,7 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
return -ENODEV;
}
- iomem = request_mem_region(res->start, resource_size(res), pdev->name);
- if (!iomem) {
- dev_err(&pdev->dev, "I2C region already claimed\n");
- return -EBUSY;
- }
-
- base = ioremap(iomem->start, resource_size(iomem));
+ base = devm_request_and_ioremap(&pdev->dev, res);
if (!base) {
dev_err(&pdev->dev, "Can't ioremap I2C region\n");
return -ENOMEM;
@@ -769,14 +766,13 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(&pdev->dev, "no irq resource?\n");
- ret = -ENODEV;
- goto err_iounmap;
+ return -ENODEV;
}
i2c_clk = clk_get_sys("tegra-i2c.2", NULL);
if (IS_ERR(i2c_clk)) {
dev_err(nvec->dev, "failed to get controller clock\n");
- goto err_iounmap;
+ return -ENODEV;
}
nvec->base = base;
@@ -797,22 +793,26 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
INIT_WORK(&nvec->tx_work, nvec_request_master);
nvec->wq = alloc_workqueue("nvec", WQ_NON_REENTRANT, 2);
- err = gpio_request_one(nvec->gpio, GPIOF_OUT_INIT_HIGH, "nvec gpio");
+ err = devm_gpio_request_one(&pdev->dev, nvec->gpio, GPIOF_OUT_INIT_HIGH,
+ "nvec gpio");
if (err < 0) {
dev_err(nvec->dev, "couldn't request gpio\n");
- goto failed;
+ destroy_workqueue(nvec->wq);
+ return -ENODEV;
}
- err = request_irq(nvec->irq, nvec_interrupt, 0, "nvec", nvec);
+ err = devm_request_irq(&pdev->dev, nvec->irq, nvec_interrupt, 0,
+ "nvec", nvec);
if (err) {
dev_err(nvec->dev, "couldn't request irq\n");
- goto failed;
+ destroy_workqueue(nvec->wq);
+ return -ENODEV;
}
disable_irq(nvec->irq);
tegra_init_i2c_slave(nvec);
- clk_enable(i2c_clk);
+ clk_prepare_enable(i2c_clk);
/* enable event reporting */
@@ -851,12 +851,6 @@ static int __devinit tegra_nvec_probe(struct platform_device *pdev)
nvec_write_async(nvec, "\x01\x01\x01\x00\x00\x80\x00", 7);
return 0;
-
-err_iounmap:
- iounmap(base);
-failed:
- kfree(nvec);
- return -ENOMEM;
}
static int __devexit tegra_nvec_remove(struct platform_device *pdev)
@@ -865,19 +859,15 @@ static int __devexit tegra_nvec_remove(struct platform_device *pdev)
nvec_write_async(nvec, EC_DISABLE_EVENT_REPORTING, 3);
mfd_remove_devices(nvec->dev);
- free_irq(nvec->irq, &nvec_interrupt);
- iounmap(nvec->base);
- gpio_free(nvec->gpio);
destroy_workqueue(nvec->wq);
- kfree(nvec);
return 0;
}
-#ifdef CONFIG_PM
-
-static int tegra_nvec_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int nvec_suspend(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct nvec_chip *nvec = platform_get_drvdata(pdev);
struct nvec_msg *msg;
@@ -894,8 +884,9 @@ static int tegra_nvec_suspend(struct platform_device *pdev, pm_message_t state)
return 0;
}
-static int tegra_nvec_resume(struct platform_device *pdev)
+static int nvec_resume(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct nvec_chip *nvec = platform_get_drvdata(pdev);
dev_dbg(nvec->dev, "resuming\n");
@@ -904,12 +895,10 @@ static int tegra_nvec_resume(struct platform_device *pdev)
return 0;
}
-
-#else
-#define tegra_nvec_suspend NULL
-#define tegra_nvec_resume NULL
#endif
+static const SIMPLE_DEV_PM_OPS(nvec_pm_ops, nvec_suspend, nvec_resume);
+
/* Match table for of_platform binding */
static const struct of_device_id nvidia_nvec_of_match[] __devinitconst = {
{ .compatible = "nvidia,nvec", },
@@ -920,21 +909,15 @@ MODULE_DEVICE_TABLE(of, nvidia_nvec_of_match);
static struct platform_driver nvec_device_driver = {
.probe = tegra_nvec_probe,
.remove = __devexit_p(tegra_nvec_remove),
- .suspend = tegra_nvec_suspend,
- .resume = tegra_nvec_resume,
.driver = {
.name = "nvec",
.owner = THIS_MODULE,
+ .pm = &nvec_pm_ops,
.of_match_table = nvidia_nvec_of_match,
}
};
-static int __init tegra_nvec_init(void)
-{
- return platform_driver_register(&nvec_device_driver);
-}
-
-module_init(tegra_nvec_init);
+module_platform_driver(nvec_device_driver);
MODULE_ALIAS("platform:nvec");
MODULE_DESCRIPTION("NVIDIA compliant embedded controller interface");
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-01 19:07:23 +0000