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isp1704_charger: Add DT support

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This patch introduces device tree support to the isp1704 charger driver.
Adding support involved moving the handling of the enable GPIO from board
code into the driver.

Signed-off-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
This commit is contained in:
Sebastian Reichel 2013-12-01 02:00:10 +01:00 committed by Anton Vorontsov
parent 434a09f9c4
commit 34a109610e
2 changed files with 51 additions and 4 deletions
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54
drivers/power/isp1704_charger.c
View File

@ -29,6 +29,8 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/power_supply.h> #include <linux/power_supply.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/usb/otg.h> #include <linux/usb/otg.h>
#include <linux/usb/ulpi.h> #include <linux/usb/ulpi.h>
@ -88,6 +90,8 @@ static void isp1704_charger_set_power(struct isp1704_charger *isp, bool on)
if (board && board->set_power) if (board && board->set_power)
board->set_power(on); board->set_power(on);
else if (board)
gpio_set_value(board->enable_gpio, on);
} }
/* /*
@ -400,12 +404,47 @@ static int isp1704_charger_probe(struct platform_device *pdev)
struct isp1704_charger *isp; struct isp1704_charger *isp;
int ret = -ENODEV; int ret = -ENODEV;
struct isp1704_charger_data *pdata = dev_get_platdata(&pdev->dev);
struct device_node *np = pdev->dev.of_node;
if (np) {
int gpio = of_get_named_gpio(np, "nxp,enable-gpio", 0);
if (gpio < 0)
return gpio;
pdata = devm_kzalloc(&pdev->dev,
sizeof(struct isp1704_charger_data), GFP_KERNEL);
pdata->enable_gpio = gpio;
dev_info(&pdev->dev, "init gpio %d\n", pdata->enable_gpio);
ret = devm_gpio_request_one(&pdev->dev, pdata->enable_gpio,
GPIOF_OUT_INIT_HIGH, "isp1704_reset");
if (ret)
goto fail0;
}
if (!pdata) {
dev_err(&pdev->dev, "missing platform data!\n");
return -ENODEV;
}
isp = devm_kzalloc(&pdev->dev, sizeof(*isp), GFP_KERNEL); isp = devm_kzalloc(&pdev->dev, sizeof(*isp), GFP_KERNEL);
if (!isp) if (!isp)
return -ENOMEM; return -ENOMEM;
isp->phy = usb_get_phy(USB_PHY_TYPE_USB2); if (np)
if (IS_ERR_OR_NULL(isp->phy)) isp->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
else
isp->phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (IS_ERR(isp->phy)) {
ret = PTR_ERR(isp->phy);
goto fail0;
}
if (!isp->phy)
goto fail0; goto fail0;
isp->dev = &pdev->dev; isp->dev = &pdev->dev;
@ -464,7 +503,6 @@ fail2:
power_supply_unregister(&isp->psy); power_supply_unregister(&isp->psy);
fail1: fail1:
isp1704_charger_set_power(isp, 0); isp1704_charger_set_power(isp, 0);
usb_put_phy(isp->phy);
fail0: fail0:
dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret); dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
@ -477,15 +515,23 @@ static int isp1704_charger_remove(struct platform_device *pdev)
usb_unregister_notifier(isp->phy, &isp->nb); usb_unregister_notifier(isp->phy, &isp->nb);
power_supply_unregister(&isp->psy); power_supply_unregister(&isp->psy);
usb_put_phy(isp->phy);
isp1704_charger_set_power(isp, 0); isp1704_charger_set_power(isp, 0);
return 0; return 0;
} }
#ifdef CONFIG_OF
static const struct of_device_id omap_isp1704_of_match[] = {
{ .compatible = "nxp,isp1704", },
{},
};
MODULE_DEVICE_TABLE(of, omap_isp1704_of_match);
#endif
static struct platform_driver isp1704_charger_driver = { static struct platform_driver isp1704_charger_driver = {
.driver = { .driver = {
.name = "isp1704_charger", .name = "isp1704_charger",
.of_match_table = of_match_ptr(omap_isp1704_of_match),
}, },
.probe = isp1704_charger_probe, .probe = isp1704_charger_probe,
.remove = isp1704_charger_remove, .remove = isp1704_charger_remove,

1
include/linux/power/isp1704_charger.h
View File

@ -24,6 +24,7 @@
struct isp1704_charger_data { struct isp1704_charger_data {
void (*set_power)(bool on); void (*set_power)(bool on);
int enable_gpio;
}; };
#endif #endif