diff options
Diffstat (limited to 'drivers/video/backlight/platform_lcd.c')
| -rw-r--r-- | drivers/video/backlight/platform_lcd.c | 66 |
1 files changed, 15 insertions, 51 deletions
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c index 056836706708..c9fe50f4d8ed 100644 --- a/drivers/video/backlight/platform_lcd.c +++ b/drivers/video/backlight/platform_lcd.c @@ -1,22 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only /* drivers/video/backlight/platform_lcd.c * * Copyright 2008 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * * Generic platform-device LCD power control interface. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/fb.h> -#include <linux/backlight.h> #include <linux/lcd.h> -#include <linux/of.h> #include <linux/slab.h> #include <video/platform_lcd.h> @@ -47,7 +40,7 @@ static int platform_lcd_set_power(struct lcd_device *lcd, int power) struct platform_lcd *plcd = to_our_lcd(lcd); int lcd_power = 1; - if (power == FB_BLANK_POWERDOWN || plcd->suspended) + if (power == LCD_POWER_OFF || plcd->suspended) lcd_power = 0; plcd->pdata->set_power(plcd->pdata, lcd_power); @@ -56,21 +49,17 @@ static int platform_lcd_set_power(struct lcd_device *lcd, int power) return 0; } -static int platform_lcd_match(struct lcd_device *lcd, struct fb_info *info) +static bool platform_lcd_controls_device(struct lcd_device *lcd, struct device *display_device) { struct platform_lcd *plcd = to_our_lcd(lcd); - struct plat_lcd_data *pdata = plcd->pdata; - if (pdata->match_fb) - return pdata->match_fb(pdata, info); - - return plcd->us->parent == info->device; + return plcd->us->parent == display_device; } -static struct lcd_ops platform_lcd_ops = { - .get_power = platform_lcd_get_power, - .set_power = platform_lcd_set_power, - .check_fb = platform_lcd_match, +static const struct lcd_ops platform_lcd_ops = { + .get_power = platform_lcd_get_power, + .set_power = platform_lcd_set_power, + .controls_device = platform_lcd_controls_device, }; static int platform_lcd_probe(struct platform_device *pdev) @@ -80,7 +69,7 @@ static int platform_lcd_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; int err; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(dev, "no platform data supplied\n"); return -EINVAL; @@ -94,35 +83,20 @@ static int platform_lcd_probe(struct platform_device *pdev) plcd = devm_kzalloc(&pdev->dev, sizeof(struct platform_lcd), GFP_KERNEL); - if (!plcd) { - dev_err(dev, "no memory for state\n"); + if (!plcd) return -ENOMEM; - } plcd->us = dev; plcd->pdata = pdata; - plcd->lcd = lcd_device_register(dev_name(dev), dev, - plcd, &platform_lcd_ops); + plcd->lcd = devm_lcd_device_register(&pdev->dev, dev_name(dev), dev, + plcd, &platform_lcd_ops); if (IS_ERR(plcd->lcd)) { dev_err(dev, "cannot register lcd device\n"); - err = PTR_ERR(plcd->lcd); - goto err; + return PTR_ERR(plcd->lcd); } platform_set_drvdata(pdev, plcd); - platform_lcd_set_power(plcd->lcd, FB_BLANK_NORMAL); - - return 0; - - err: - return err; -} - -static int platform_lcd_remove(struct platform_device *pdev) -{ - struct platform_lcd *plcd = platform_get_drvdata(pdev); - - lcd_device_unregister(plcd->lcd); + platform_lcd_set_power(plcd->lcd, LCD_POWER_REDUCED); return 0; } @@ -152,27 +126,17 @@ static int platform_lcd_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(platform_lcd_pm_ops, platform_lcd_suspend, platform_lcd_resume); -#ifdef CONFIG_OF -static const struct of_device_id platform_lcd_of_match[] = { - { .compatible = "platform-lcd" }, - {}, -}; -MODULE_DEVICE_TABLE(of, platform_lcd_of_match); -#endif - static struct platform_driver platform_lcd_driver = { .driver = { .name = "platform-lcd", - .owner = THIS_MODULE, .pm = &platform_lcd_pm_ops, - .of_match_table = of_match_ptr(platform_lcd_of_match), }, .probe = platform_lcd_probe, - .remove = platform_lcd_remove, }; module_platform_driver(platform_lcd_driver); MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>"); +MODULE_DESCRIPTION("Generic platform-device LCD power control interface"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:platform-lcd"); |