mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
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6bdc6d4a37
After commit 0edb555a65
("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.
Convert all platform drivers below drivers/leds/ to use .remove(), with
the eventual goal to drop struct platform_driver::remove_new(). As
.remove() and .remove_new() have the same prototypes, conversion is done
by just changing the structure member name in the driver initializer.
While touching these files, make indention of the struct initializer
consistent in several files.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20241010203622.839625-5-u.kleine-koenig@baylibre.com
Signed-off-by: Lee Jones <lee@kernel.org>
238 lines
5.6 KiB
C
238 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* LED driver for Marvell 88PM860x
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*
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* Copyright (C) 2009 Marvell International Ltd.
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* Haojian Zhuang <haojian.zhuang@marvell.com>
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*/
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/leds.h>
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#include <linux/slab.h>
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#include <linux/mfd/88pm860x.h>
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#include <linux/module.h>
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#define LED_PWM_MASK (0x1F)
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#define LED_CURRENT_MASK (0x07 << 5)
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#define LED_BLINK_MASK (0x7F)
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#define LED_ON_CONTINUOUS (0x0F << 3)
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#define LED1_BLINK_EN (1 << 1)
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#define LED2_BLINK_EN (1 << 2)
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struct pm860x_led {
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struct led_classdev cdev;
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struct i2c_client *i2c;
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struct pm860x_chip *chip;
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struct mutex lock;
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char name[MFD_NAME_SIZE];
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int port;
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int iset;
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unsigned char brightness;
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unsigned char current_brightness;
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int reg_control;
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int reg_blink;
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int blink_mask;
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};
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static int led_power_set(struct pm860x_chip *chip, int port, int on)
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{
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int ret = -EINVAL;
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switch (port) {
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case 0:
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case 1:
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case 2:
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ret = on ? pm8606_osc_enable(chip, RGB1_ENABLE) :
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pm8606_osc_disable(chip, RGB1_ENABLE);
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break;
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case 3:
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case 4:
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case 5:
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ret = on ? pm8606_osc_enable(chip, RGB2_ENABLE) :
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pm8606_osc_disable(chip, RGB2_ENABLE);
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break;
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}
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return ret;
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}
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static int pm860x_led_set(struct led_classdev *cdev,
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enum led_brightness value)
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{
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struct pm860x_led *led = container_of(cdev, struct pm860x_led, cdev);
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struct pm860x_chip *chip;
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unsigned char buf[3];
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int ret;
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chip = led->chip;
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mutex_lock(&led->lock);
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led->brightness = value >> 3;
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if ((led->current_brightness == 0) && led->brightness) {
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led_power_set(chip, led->port, 1);
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if (led->iset) {
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pm860x_set_bits(led->i2c, led->reg_control,
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LED_CURRENT_MASK, led->iset);
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}
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pm860x_set_bits(led->i2c, led->reg_blink,
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LED_BLINK_MASK, LED_ON_CONTINUOUS);
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pm860x_set_bits(led->i2c, PM8606_WLED3B, led->blink_mask,
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led->blink_mask);
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}
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pm860x_set_bits(led->i2c, led->reg_control, LED_PWM_MASK,
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led->brightness);
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if (led->brightness == 0) {
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pm860x_bulk_read(led->i2c, led->reg_control, 3, buf);
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ret = buf[0] & LED_PWM_MASK;
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ret |= buf[1] & LED_PWM_MASK;
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ret |= buf[2] & LED_PWM_MASK;
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if (ret == 0) {
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/* unset current since no led is lighting */
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pm860x_set_bits(led->i2c, led->reg_control,
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LED_CURRENT_MASK, 0);
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pm860x_set_bits(led->i2c, PM8606_WLED3B,
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led->blink_mask, 0);
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led_power_set(chip, led->port, 0);
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}
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}
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led->current_brightness = led->brightness;
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dev_dbg(chip->dev, "Update LED. (reg:%d, brightness:%d)\n",
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led->reg_control, led->brightness);
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mutex_unlock(&led->lock);
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return 0;
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}
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#ifdef CONFIG_OF
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static int pm860x_led_dt_init(struct platform_device *pdev,
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struct pm860x_led *data)
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{
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struct device_node *nproot;
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int iset = 0;
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if (!dev_of_node(pdev->dev.parent))
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return -ENODEV;
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nproot = of_get_child_by_name(dev_of_node(pdev->dev.parent), "leds");
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if (!nproot) {
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dev_err(&pdev->dev, "failed to find leds node\n");
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return -ENODEV;
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}
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for_each_available_child_of_node_scoped(nproot, np) {
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if (of_node_name_eq(np, data->name)) {
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of_property_read_u32(np, "marvell,88pm860x-iset",
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&iset);
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data->iset = PM8606_LED_CURRENT(iset);
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break;
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}
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}
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of_node_put(nproot);
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return 0;
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}
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#else
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#define pm860x_led_dt_init(x, y) (-1)
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#endif
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static int pm860x_led_probe(struct platform_device *pdev)
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{
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struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
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struct pm860x_led_pdata *pdata = dev_get_platdata(&pdev->dev);
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struct pm860x_led *data;
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struct resource *res;
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int ret = 0;
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data = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_led), GFP_KERNEL);
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if (data == NULL)
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return -ENOMEM;
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res = platform_get_resource_byname(pdev, IORESOURCE_REG, "control");
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if (!res) {
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dev_err(&pdev->dev, "No REG resource for control\n");
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return -ENXIO;
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}
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data->reg_control = res->start;
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res = platform_get_resource_byname(pdev, IORESOURCE_REG, "blink");
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if (!res) {
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dev_err(&pdev->dev, "No REG resource for blink\n");
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return -ENXIO;
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}
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data->reg_blink = res->start;
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memset(data->name, 0, MFD_NAME_SIZE);
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switch (pdev->id) {
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case 0:
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data->blink_mask = LED1_BLINK_EN;
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sprintf(data->name, "led0-red");
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break;
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case 1:
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data->blink_mask = LED1_BLINK_EN;
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sprintf(data->name, "led0-green");
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break;
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case 2:
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data->blink_mask = LED1_BLINK_EN;
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sprintf(data->name, "led0-blue");
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break;
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case 3:
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data->blink_mask = LED2_BLINK_EN;
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sprintf(data->name, "led1-red");
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break;
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case 4:
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data->blink_mask = LED2_BLINK_EN;
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sprintf(data->name, "led1-green");
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break;
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case 5:
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data->blink_mask = LED2_BLINK_EN;
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sprintf(data->name, "led1-blue");
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break;
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}
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data->chip = chip;
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data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
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data->port = pdev->id;
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if (pm860x_led_dt_init(pdev, data))
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if (pdata)
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data->iset = pdata->iset;
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data->current_brightness = 0;
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data->cdev.name = data->name;
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data->cdev.brightness_set_blocking = pm860x_led_set;
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mutex_init(&data->lock);
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ret = led_classdev_register(chip->dev, &data->cdev);
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if (ret < 0) {
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dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
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return ret;
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}
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pm860x_led_set(&data->cdev, 0);
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platform_set_drvdata(pdev, data);
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return 0;
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}
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static void pm860x_led_remove(struct platform_device *pdev)
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{
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struct pm860x_led *data = platform_get_drvdata(pdev);
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led_classdev_unregister(&data->cdev);
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}
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static struct platform_driver pm860x_led_driver = {
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.driver = {
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.name = "88pm860x-led",
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},
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.probe = pm860x_led_probe,
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.remove = pm860x_led_remove,
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};
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module_platform_driver(pm860x_led_driver);
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MODULE_DESCRIPTION("LED driver for Marvell PM860x");
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MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:88pm860x-led");
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