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power: supply: isp1704: switch to gpiod API 

This migrates isp1704 driver from old GPIO API to new descriptor
based GPIO API and drops useless platform data as a side-effect.

Migration is simple, since all mainline users are DT based and
DT API does not change. Out of tree users of the platform data
need to migrate to gpiod_lookup_table as described here:

Documentation/driver-api/gpio/board.rst

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
hifive-unleashed-5.1
Sebastian Reichel 2018-12-13 02:38:58 +01:00 committed by Sebastian Reichel
parent bfeffd1552
commit f5d782d46a
2 changed files with 12 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/power/supply/isp1704_charger.c
View File

@ -30,13 +30,12 @@
#include <linux/power_supply.h>
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/power/isp1704_charger.h>
/* Vendor specific Power Control register */
#define ISP1704_PWR_CTRL 0x3d
@ -60,6 +59,7 @@ struct isp1704_charger {
struct device *dev;
struct power_supply *psy;
struct power_supply_desc psy_desc;
struct gpio_desc *enable_gpio;
struct usb_phy *phy;
struct notifier_block nb;
struct work_struct work;
@ -81,18 +81,9 @@ static inline int isp1704_write(struct isp1704_charger *isp, u32 reg, u32 val)
return usb_phy_io_write(isp->phy, val, reg);
}
/*
* Disable/enable the power from the isp1704 if a function for it
* has been provided with platform data.
*/
static void isp1704_charger_set_power(struct isp1704_charger *isp, bool on)
{
struct isp1704_charger_data *board = isp->dev->platform_data;
if (board && board->set_power)
board->set_power(on);
else if (board)
gpio_set_value(board->enable_gpio, on);
gpiod_set_value(isp->enable_gpio, on);
}
/*
@ -405,46 +396,19 @@ static int isp1704_charger_probe(struct platform_device *pdev)
int ret = -ENODEV;
struct power_supply_config psy_cfg = {};
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) {
dev_err(&pdev->dev, "missing DT GPIO nxp,enable-gpio\n");
return gpio;
}
pdata = devm_kzalloc(&pdev->dev,
sizeof(struct isp1704_charger_data), GFP_KERNEL);
if (!pdata) {
ret = -ENOMEM;
goto fail0;
}
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) {
dev_err(&pdev->dev, "gpio request failed\n");
goto fail0;
}
}
if (!pdata) {
dev_err(&pdev->dev, "missing platform data!\n");
return -ENODEV;
}
isp = devm_kzalloc(&pdev->dev, sizeof(*isp), GFP_KERNEL);
if (!isp)
return -ENOMEM;
if (np)
isp->enable_gpio = devm_gpiod_get(&pdev->dev, "nxp,enable",
GPIOD_OUT_HIGH);
if (IS_ERR(isp->enable_gpio)) {
ret = PTR_ERR(isp->enable_gpio);
dev_err(&pdev->dev, "Could not get reset gpio: %d\n", ret);
return ret;
}
if (pdev->dev.of_node)
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);

30
include/linux/power/isp1704_charger.h
View File

@ -1,30 +0,0 @@
/*
* ISP1704 USB Charger Detection driver
*
* Copyright (C) 2011 Nokia Corporation
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ISP1704_CHARGER_H
#define __ISP1704_CHARGER_H
struct isp1704_charger_data {
void (*set_power)(bool on);
int enable_gpio;
};
#endif