diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/da903x_bl.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/backlight/da903x_bl.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/da903x_bl.c b/ANDROID_3.4.5/drivers/video/backlight/da903x_bl.c deleted file mode 100644 index 30e19681..00000000 --- a/ANDROID_3.4.5/drivers/video/backlight/da903x_bl.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Backlight driver for Dialog Semiconductor DA9030/DA9034 - * - * Copyright (C) 2008 Compulab, Ltd. - * Mike Rapoport <mike@compulab.co.il> - * - * Copyright (C) 2006-2008 Marvell International Ltd. - * Eric Miao <eric.miao@marvell.com> - * - * 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/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/fb.h> -#include <linux/backlight.h> -#include <linux/mfd/da903x.h> -#include <linux/slab.h> -#include <linux/module.h> - -#define DA9030_WLED_CONTROL 0x25 -#define DA9030_WLED_CP_EN (1 << 6) -#define DA9030_WLED_TRIM(x) ((x) & 0x7) - -#define DA9034_WLED_CONTROL1 0x3C -#define DA9034_WLED_CONTROL2 0x3D -#define DA9034_WLED_ISET(x) ((x) & 0x1f) - -#define DA9034_WLED_BOOST_EN (1 << 5) - -#define DA9030_MAX_BRIGHTNESS 7 -#define DA9034_MAX_BRIGHTNESS 0x7f - -struct da903x_backlight_data { - struct device *da903x_dev; - int id; - int current_brightness; -}; - -static int da903x_backlight_set(struct backlight_device *bl, int brightness) -{ - struct da903x_backlight_data *data = bl_get_data(bl); - struct device *dev = data->da903x_dev; - uint8_t val; - int ret = 0; - - switch (data->id) { - case DA9034_ID_WLED: - ret = da903x_update(dev, DA9034_WLED_CONTROL1, - brightness, 0x7f); - if (ret) - return ret; - - if (data->current_brightness && brightness == 0) - ret = da903x_clr_bits(dev, - DA9034_WLED_CONTROL2, - DA9034_WLED_BOOST_EN); - - if (data->current_brightness == 0 && brightness) - ret = da903x_set_bits(dev, - DA9034_WLED_CONTROL2, - DA9034_WLED_BOOST_EN); - break; - case DA9030_ID_WLED: - val = DA9030_WLED_TRIM(brightness); - val |= brightness ? DA9030_WLED_CP_EN : 0; - ret = da903x_write(dev, DA9030_WLED_CONTROL, val); - break; - } - - if (ret) - return ret; - - data->current_brightness = brightness; - return 0; -} - -static int da903x_backlight_update_status(struct backlight_device *bl) -{ - int brightness = bl->props.brightness; - - if (bl->props.power != FB_BLANK_UNBLANK) - brightness = 0; - - if (bl->props.fb_blank != FB_BLANK_UNBLANK) - brightness = 0; - - return da903x_backlight_set(bl, brightness); -} - -static int da903x_backlight_get_brightness(struct backlight_device *bl) -{ - struct da903x_backlight_data *data = bl_get_data(bl); - return data->current_brightness; -} - -static const struct backlight_ops da903x_backlight_ops = { - .update_status = da903x_backlight_update_status, - .get_brightness = da903x_backlight_get_brightness, -}; - -static int da903x_backlight_probe(struct platform_device *pdev) -{ - struct da9034_backlight_pdata *pdata = pdev->dev.platform_data; - struct da903x_backlight_data *data; - struct backlight_device *bl; - struct backlight_properties props; - int max_brightness; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (data == NULL) - return -ENOMEM; - - switch (pdev->id) { - case DA9030_ID_WLED: - max_brightness = DA9030_MAX_BRIGHTNESS; - break; - case DA9034_ID_WLED: - max_brightness = DA9034_MAX_BRIGHTNESS; - break; - default: - dev_err(&pdev->dev, "invalid backlight device ID(%d)\n", - pdev->id); - return -EINVAL; - } - - data->id = pdev->id; - data->da903x_dev = pdev->dev.parent; - data->current_brightness = 0; - - /* adjust the WLED output current */ - if (pdata) - da903x_write(data->da903x_dev, DA9034_WLED_CONTROL2, - DA9034_WLED_ISET(pdata->output_current)); - - props.type = BACKLIGHT_RAW; - props.max_brightness = max_brightness; - bl = backlight_device_register(pdev->name, data->da903x_dev, data, - &da903x_backlight_ops, &props); - if (IS_ERR(bl)) { - dev_err(&pdev->dev, "failed to register backlight\n"); - return PTR_ERR(bl); - } - - bl->props.brightness = max_brightness; - - platform_set_drvdata(pdev, bl); - backlight_update_status(bl); - return 0; -} - -static int da903x_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; -} - -#ifdef CONFIG_PM -static int da903x_backlight_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct backlight_device *bl = platform_get_drvdata(pdev); - return da903x_backlight_set(bl, 0); -} - -static int da903x_backlight_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_update_status(bl); - return 0; -} - -static const struct dev_pm_ops da903x_backlight_pm_ops = { - .suspend = da903x_backlight_suspend, - .resume = da903x_backlight_resume, -}; -#endif - -static struct platform_driver da903x_backlight_driver = { - .driver = { - .name = "da903x-backlight", - .owner = THIS_MODULE, -#ifdef CONFIG_PM - .pm = &da903x_backlight_pm_ops, -#endif - }, - .probe = da903x_backlight_probe, - .remove = da903x_backlight_remove, -}; - -module_platform_driver(da903x_backlight_driver); - -MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034"); -MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" - "Mike Rapoport <mike@compulab.co.il>"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:da903x-backlight"); |