diff options
Diffstat (limited to 'target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c')
| -rw-r--r-- | target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c deleted file mode 100644 index 6aeed43bc8..0000000000 --- a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * drivers/video/backlight/ubicom32lcdpowerpower.c - * LCD power driver for the Ubicom32 platform - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port 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. - * - * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/lcd.h> -#include <linux/fb.h> -#include <linux/gpio.h> - -#include <asm/ubicom32lcdpower.h> -#include <asm/ip5000.h> - -#define DRIVER_NAME "ubicom32lcdpower" - -struct ubicom32lcdpower_data { - /* - * Pointer to the platform data structure. Keep this around since we need values - * from it to set the backlight intensity. - */ - const struct ubicom32lcdpower_platform_data *pdata; - - /* - * LCD device, we have to save this for use when we remove ourselves. - */ - struct lcd_device *lcddev; -}; - -/* - * ubicom32lcdpower_set_power - */ -static int ubicom32lcdpower_set_power(struct lcd_device *ld, int power) -{ - struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld); - if (power == FB_BLANK_UNBLANK) { - gpio_direction_output(ud->pdata->vgh_gpio, ud->pdata->vgh_polarity); - return 0; - } - - gpio_direction_output(ud->pdata->vgh_gpio, !ud->pdata->vgh_polarity); - return 0; -} - -/* - * ubicom32lcdpower_get_power - */ -static int ubicom32lcdpower_get_power(struct lcd_device *ld) -{ - struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld); - int vgh = gpio_get_value(ud->pdata->vgh_gpio); - if ((vgh && ud->pdata->vgh_polarity) || (!vgh && !ud->pdata->vgh_polarity)) { - return 1; - } - - return 0; -} - -static struct lcd_ops ubicom32lcdpower_ops = { - .get_power = ubicom32lcdpower_get_power, - .set_power = ubicom32lcdpower_set_power, -}; - -/* - * ubicom32lcdpower_probe - */ -static int ubicom32lcdpower_probe(struct platform_device *pdev) -{ - const struct ubicom32lcdpower_platform_data *pdata = pdev->dev.platform_data; - struct ubicom32lcdpower_data *ud; - struct lcd_device *lcddev; - int retval; - - /* - * Check to see if we have any platform data, if we don't have a LCD to control - */ - if (!pdata) { - return -ENODEV; - } - - /* - * Allocate our private data - */ - ud = kzalloc(sizeof(struct ubicom32lcdpower_data), GFP_KERNEL); - if (!ud) { - return -ENOMEM; - } - - ud->pdata = pdata; - - /* - * Request our GPIOs - */ - retval = gpio_request(pdata->vgh_gpio, "vgh"); - if (retval) { - dev_err(&pdev->dev, "Failed to allocate vgh GPIO\n"); - goto fail_gpio; - } - - /* - * Register our lcd device - */ - lcddev = lcd_device_register(DRIVER_NAME, &pdev->dev, ud, &ubicom32lcdpower_ops); - if (IS_ERR(lcddev)) { - retval = PTR_ERR(lcddev); - goto fail; - } - - ud->lcddev = lcddev; - platform_set_drvdata(pdev, ud); - - ubicom32lcdpower_set_power(lcddev, FB_BLANK_UNBLANK); - - printk(KERN_INFO DRIVER_NAME ": LCD driver started\n"); - - return 0; - -fail: - gpio_free(pdata->vgh_gpio); - -fail_gpio: - platform_set_drvdata(pdev, NULL); - kfree(ud); - return retval; -} - -/* - * ubicom32lcdpower_remove - */ -static int __exit ubicom32lcdpower_remove(struct platform_device *pdev) -{ - struct ubicom32lcdpower_data *ud = platform_get_drvdata(pdev); - - lcd_device_unregister(ud->lcddev); - platform_set_drvdata(pdev, NULL); - kfree(ud); - - return 0; -} - -static struct platform_driver ubicom32lcdpower_driver = { - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - }, - - .remove = __exit_p(ubicom32lcdpower_remove), -}; - -/* - * ubicom32lcdpower_init - */ -static int __init ubicom32lcdpower_init(void) -{ - return platform_driver_probe(&ubicom32lcdpower_driver, ubicom32lcdpower_probe); -} -module_init(ubicom32lcdpower_init); - -/* - * ubicom32lcdpower_exit - */ -static void __exit ubicom32lcdpower_exit(void) -{ - platform_driver_unregister(&ubicom32lcdpower_driver); -} -module_exit(ubicom32lcdpower_exit); - -MODULE_AUTHOR("Patrick Tjin <@ubicom.com>"); -MODULE_DESCRIPTION("Ubicom32 lcd power driver"); -MODULE_LICENSE("GPL"); |