#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#include <linux/leds.h>
#include <linux/platform_data/leds-kirkwood-netxbig.h>
spin_unlock_irqrestore(&gpio_ext_lock, flags);
}
-static int gpio_ext_init(struct netxbig_gpio_ext *gpio_ext)
+static int gpio_ext_init(struct platform_device *pdev,
+ struct netxbig_gpio_ext *gpio_ext)
{
int err;
int i;
/* Configure address GPIOs. */
for (i = 0; i < gpio_ext->num_addr; i++) {
- err = gpio_request_one(gpio_ext->addr[i], GPIOF_OUT_INIT_LOW,
- "GPIO extension addr");
+ err = devm_gpio_request_one(&pdev->dev, gpio_ext->addr[i],
+ GPIOF_OUT_INIT_LOW,
+ "GPIO extension addr");
if (err)
- goto err_free_addr;
+ return err;
}
/* Configure data GPIOs. */
for (i = 0; i < gpio_ext->num_data; i++) {
- err = gpio_request_one(gpio_ext->data[i], GPIOF_OUT_INIT_LOW,
- "GPIO extension data");
+ err = devm_gpio_request_one(&pdev->dev, gpio_ext->data[i],
+ GPIOF_OUT_INIT_LOW,
+ "GPIO extension data");
if (err)
- goto err_free_data;
+ return err;
}
/* Configure "enable select" GPIO. */
- err = gpio_request_one(gpio_ext->enable, GPIOF_OUT_INIT_LOW,
- "GPIO extension enable");
+ err = devm_gpio_request_one(&pdev->dev, gpio_ext->enable,
+ GPIOF_OUT_INIT_LOW,
+ "GPIO extension enable");
if (err)
- goto err_free_data;
+ return err;
return 0;
-
-err_free_data:
- for (i = i - 1; i >= 0; i--)
- gpio_free(gpio_ext->data[i]);
- i = gpio_ext->num_addr;
-err_free_addr:
- for (i = i - 1; i >= 0; i--)
- gpio_free(gpio_ext->addr[i]);
-
- return err;
-}
-
-static void gpio_ext_free(struct netxbig_gpio_ext *gpio_ext)
-{
- int i;
-
- gpio_free(gpio_ext->enable);
- for (i = gpio_ext->num_addr - 1; i >= 0; i--)
- gpio_free(gpio_ext->addr[i]);
- for (i = gpio_ext->num_data - 1; i >= 0; i--)
- gpio_free(gpio_ext->data[i]);
}
/*
int mode_addr;
int *mode_val;
int bright_addr;
- int bright_max;
struct netxbig_led_timer *timer;
int num_timer;
enum netxbig_led_mode mode;
struct netxbig_led_data *led_dat =
container_of(led_cdev, struct netxbig_led_data, cdev);
enum netxbig_led_mode mode;
- int mode_val, bright_val;
+ int mode_val;
int set_brightness = 1;
unsigned long flags;
* SATA LEDs. So, change the brightness setting for a single
* SATA LED will affect all the others.
*/
- if (set_brightness) {
- bright_val = DIV_ROUND_UP(value * led_dat->bright_max,
- LED_FULL);
+ if (set_brightness)
gpio_ext_set_value(led_dat->gpio_ext,
- led_dat->bright_addr, bright_val);
- }
+ led_dat->bright_addr, value);
spin_unlock_irqrestore(&led_dat->lock, flags);
}
};
ATTRIBUTE_GROUPS(netxbig_led);
-static void delete_netxbig_led(struct netxbig_led_data *led_dat)
+static int create_netxbig_led(struct platform_device *pdev,
+ struct netxbig_led_platform_data *pdata,
+ struct netxbig_led_data *led_dat,
+ const struct netxbig_led *template)
{
- led_classdev_unregister(&led_dat->cdev);
-}
-
-static int
-create_netxbig_led(struct platform_device *pdev,
- struct netxbig_led_data *led_dat,
- const struct netxbig_led *template)
-{
- struct netxbig_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
spin_lock_init(&led_dat->lock);
led_dat->gpio_ext = pdata->gpio_ext;
led_dat->cdev.name = template->name;
*/
led_dat->sata = 0;
led_dat->cdev.brightness = LED_OFF;
+ led_dat->cdev.max_brightness = template->bright_max;
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
led_dat->mode_addr = template->mode_addr;
led_dat->mode_val = template->mode_val;
led_dat->bright_addr = template->bright_addr;
- led_dat->bright_max = (1 << pdata->gpio_ext->num_data) - 1;
led_dat->timer = pdata->timer;
led_dat->num_timer = pdata->num_timer;
/*
if (led_dat->mode_val[NETXBIG_LED_SATA] != NETXBIG_LED_INVALID_MODE)
led_dat->cdev.groups = netxbig_led_groups;
- return led_classdev_register(&pdev->dev, &led_dat->cdev);
+ return devm_led_classdev_register(&pdev->dev, &led_dat->cdev);
}
-static int netxbig_led_probe(struct platform_device *pdev)
+#ifdef CONFIG_OF_GPIO
+static int gpio_ext_get_of_pdata(struct device *dev, struct device_node *np,
+ struct netxbig_gpio_ext *gpio_ext)
{
- struct netxbig_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
- struct netxbig_led_data *leds_data;
- int i;
+ int *addr, *data;
+ int num_addr, num_data;
int ret;
+ int i;
- if (!pdata)
- return -EINVAL;
-
- leds_data = devm_kzalloc(&pdev->dev,
- sizeof(struct netxbig_led_data) * pdata->num_leds, GFP_KERNEL);
- if (!leds_data)
+ ret = of_gpio_named_count(np, "addr-gpios");
+ if (ret < 0) {
+ dev_err(dev,
+ "Failed to count GPIOs in DT property addr-gpios\n");
+ return ret;
+ }
+ num_addr = ret;
+ addr = devm_kzalloc(dev, num_addr * sizeof(*addr), GFP_KERNEL);
+ if (!addr)
return -ENOMEM;
- ret = gpio_ext_init(pdata->gpio_ext);
- if (ret < 0)
+ for (i = 0; i < num_addr; i++) {
+ ret = of_get_named_gpio(np, "addr-gpios", i);
+ if (ret < 0)
+ return ret;
+ addr[i] = ret;
+ }
+ gpio_ext->addr = addr;
+ gpio_ext->num_addr = num_addr;
+
+ ret = of_gpio_named_count(np, "data-gpios");
+ if (ret < 0) {
+ dev_err(dev,
+ "Failed to count GPIOs in DT property data-gpios\n");
return ret;
+ }
+ num_data = ret;
+ data = devm_kzalloc(dev, num_data * sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- for (i = 0; i < pdata->num_leds; i++) {
- ret = create_netxbig_led(pdev, &leds_data[i], &pdata->leds[i]);
+ for (i = 0; i < num_data; i++) {
+ ret = of_get_named_gpio(np, "data-gpios", i);
if (ret < 0)
- goto err_free_leds;
+ return ret;
+ data[i] = ret;
}
+ gpio_ext->data = data;
+ gpio_ext->num_data = num_data;
- platform_set_drvdata(pdev, leds_data);
+ ret = of_get_named_gpio(np, "enable-gpio", 0);
+ if (ret < 0) {
+ dev_err(dev,
+ "Failed to get GPIO from DT property enable-gpio\n");
+ return ret;
+ }
+ gpio_ext->enable = ret;
return 0;
+}
+
+static int netxbig_leds_get_of_pdata(struct device *dev,
+ struct netxbig_led_platform_data *pdata)
+{
+ struct device_node *np = dev->of_node;
+ struct device_node *gpio_ext_np;
+ struct device_node *child;
+ struct netxbig_gpio_ext *gpio_ext;
+ struct netxbig_led_timer *timers;
+ struct netxbig_led *leds, *led;
+ int num_timers;
+ int num_leds = 0;
+ int ret;
+ int i;
-err_free_leds:
- for (i = i - 1; i >= 0; i--)
- delete_netxbig_led(&leds_data[i]);
+ /* GPIO extension */
+ gpio_ext_np = of_parse_phandle(np, "gpio-ext", 0);
+ if (!gpio_ext_np) {
+ dev_err(dev, "Failed to get DT handle gpio-ext\n");
+ return -EINVAL;
+ }
- gpio_ext_free(pdata->gpio_ext);
+ gpio_ext = devm_kzalloc(dev, sizeof(*gpio_ext), GFP_KERNEL);
+ if (!gpio_ext)
+ return -ENOMEM;
+ ret = gpio_ext_get_of_pdata(dev, gpio_ext_np, gpio_ext);
+ if (ret)
+ return ret;
+ of_node_put(gpio_ext_np);
+ pdata->gpio_ext = gpio_ext;
+
+ /* Timers (optional) */
+ ret = of_property_count_u32_elems(np, "timers");
+ if (ret > 0) {
+ if (ret % 3)
+ return -EINVAL;
+ num_timers = ret / 3;
+ timers = devm_kzalloc(dev, num_timers * sizeof(*timers),
+ GFP_KERNEL);
+ if (!timers)
+ return -ENOMEM;
+ for (i = 0; i < num_timers; i++) {
+ u32 tmp;
+
+ of_property_read_u32_index(np, "timers", 3 * i,
+ &timers[i].mode);
+ if (timers[i].mode >= NETXBIG_LED_MODE_NUM)
+ return -EINVAL;
+ of_property_read_u32_index(np, "timers",
+ 3 * i + 1, &tmp);
+ timers[i].delay_on = tmp;
+ of_property_read_u32_index(np, "timers",
+ 3 * i + 2, &tmp);
+ timers[i].delay_off = tmp;
+ }
+ pdata->timer = timers;
+ pdata->num_timer = num_timers;
+ }
+
+ /* LEDs */
+ num_leds = of_get_child_count(np);
+ if (!num_leds) {
+ dev_err(dev, "No LED subnodes found in DT\n");
+ return -ENODEV;
+ }
+
+ leds = devm_kzalloc(dev, num_leds * sizeof(*leds), GFP_KERNEL);
+ if (!leds)
+ return -ENOMEM;
+
+ led = leds;
+ for_each_child_of_node(np, child) {
+ const char *string;
+ int *mode_val;
+ int num_modes;
+
+ ret = of_property_read_u32(child, "mode-addr",
+ &led->mode_addr);
+ if (ret)
+ goto err_node_put;
+
+ ret = of_property_read_u32(child, "bright-addr",
+ &led->bright_addr);
+ if (ret)
+ goto err_node_put;
+
+ ret = of_property_read_u32(child, "max-brightness",
+ &led->bright_max);
+ if (ret)
+ goto err_node_put;
+
+ mode_val =
+ devm_kzalloc(dev,
+ NETXBIG_LED_MODE_NUM * sizeof(*mode_val),
+ GFP_KERNEL);
+ if (!mode_val) {
+ ret = -ENOMEM;
+ goto err_node_put;
+ }
+
+ for (i = 0; i < NETXBIG_LED_MODE_NUM; i++)
+ mode_val[i] = NETXBIG_LED_INVALID_MODE;
+
+ ret = of_property_count_u32_elems(child, "mode-val");
+ if (ret < 0 || ret % 2) {
+ ret = -EINVAL;
+ goto err_node_put;
+ }
+ num_modes = ret / 2;
+ if (num_modes > NETXBIG_LED_MODE_NUM) {
+ ret = -EINVAL;
+ goto err_node_put;
+ }
+
+ for (i = 0; i < num_modes; i++) {
+ int mode;
+ int val;
+
+ of_property_read_u32_index(child,
+ "mode-val", 2 * i, &mode);
+ of_property_read_u32_index(child,
+ "mode-val", 2 * i + 1, &val);
+ if (mode >= NETXBIG_LED_MODE_NUM) {
+ ret = -EINVAL;
+ goto err_node_put;
+ }
+ mode_val[mode] = val;
+ }
+ led->mode_val = mode_val;
+
+ if (!of_property_read_string(child, "label", &string))
+ led->name = string;
+ else
+ led->name = child->name;
+
+ if (!of_property_read_string(child,
+ "linux,default-trigger", &string))
+ led->default_trigger = string;
+
+ led++;
+ }
+
+ pdata->leds = leds;
+ pdata->num_leds = num_leds;
+
+ return 0;
+
+err_node_put:
+ of_node_put(child);
return ret;
}
-static int netxbig_led_remove(struct platform_device *pdev)
+static const struct of_device_id of_netxbig_leds_match[] = {
+ { .compatible = "lacie,netxbig-leds", },
+ {},
+};
+#else
+static inline int
+netxbig_leds_get_of_pdata(struct device *dev,
+ struct netxbig_led_platform_data *pdata)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_OF_GPIO */
+
+static int netxbig_led_probe(struct platform_device *pdev)
{
struct netxbig_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct netxbig_led_data *leds_data;
int i;
+ int ret;
- leds_data = platform_get_drvdata(pdev);
+ if (!pdata) {
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ ret = netxbig_leds_get_of_pdata(&pdev->dev, pdata);
+ if (ret)
+ return ret;
+ }
+
+ leds_data = devm_kzalloc(&pdev->dev,
+ pdata->num_leds * sizeof(*leds_data),
+ GFP_KERNEL);
+ if (!leds_data)
+ return -ENOMEM;
- for (i = 0; i < pdata->num_leds; i++)
- delete_netxbig_led(&leds_data[i]);
+ ret = gpio_ext_init(pdev, pdata->gpio_ext);
+ if (ret < 0)
+ return ret;
- gpio_ext_free(pdata->gpio_ext);
+ for (i = 0; i < pdata->num_leds; i++) {
+ ret = create_netxbig_led(pdev, pdata,
+ &leds_data[i], &pdata->leds[i]);
+ if (ret < 0)
+ return ret;
+ }
return 0;
}
static struct platform_driver netxbig_led_driver = {
.probe = netxbig_led_probe,
- .remove = netxbig_led_remove,
.driver = {
- .name = "leds-netxbig",
+ .name = "leds-netxbig",
+ .of_match_table = of_match_ptr(of_netxbig_leds_match),
},
};
projects / karo-tx-linux.git / blobdiff