diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/jornada720_bl.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/backlight/jornada720_bl.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/jornada720_bl.c b/ANDROID_3.4.5/drivers/video/backlight/jornada720_bl.c deleted file mode 100644 index 2f8af5d7..00000000 --- a/ANDROID_3.4.5/drivers/video/backlight/jornada720_bl.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * - * Backlight driver for HP Jornada 700 series (710/720/728) - * Copyright (C) 2006-2009 Kristoffer Ericson <kristoffer.ericson@gmail.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 or any later version as published by the Free Software Foundation. - * - */ - -#include <linux/backlight.h> -#include <linux/device.h> -#include <linux/fb.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> - -#include <mach/jornada720.h> -#include <mach/hardware.h> - -#include <video/s1d13xxxfb.h> - -#define BL_MAX_BRIGHT 255 -#define BL_DEF_BRIGHT 25 - -static int jornada_bl_get_brightness(struct backlight_device *bd) -{ - int ret; - - /* check if backlight is on */ - if (!(PPSR & PPC_LDD1)) - return 0; - - jornada_ssp_start(); - - /* cmd should return txdummy */ - ret = jornada_ssp_byte(GETBRIGHTNESS); - - if (jornada_ssp_byte(GETBRIGHTNESS) != TXDUMMY) { - printk(KERN_ERR "bl : get brightness timeout\n"); - jornada_ssp_end(); - return -ETIMEDOUT; - } else /* exchange txdummy for value */ - ret = jornada_ssp_byte(TXDUMMY); - - jornada_ssp_end(); - - return (BL_MAX_BRIGHT - ret); -} - -static int jornada_bl_update_status(struct backlight_device *bd) -{ - int ret = 0; - - jornada_ssp_start(); - - /* If backlight is off then really turn it off */ - if ((bd->props.power != FB_BLANK_UNBLANK) || (bd->props.fb_blank != FB_BLANK_UNBLANK)) { - ret = jornada_ssp_byte(BRIGHTNESSOFF); - if (ret != TXDUMMY) { - printk(KERN_INFO "bl : brightness off timeout\n"); - /* turn off backlight */ - PPSR &= ~PPC_LDD1; - PPDR |= PPC_LDD1; - ret = -ETIMEDOUT; - } - } else /* turn on backlight */ - PPSR |= PPC_LDD1; - - /* send command to our mcu */ - if (jornada_ssp_byte(SETBRIGHTNESS) != TXDUMMY) { - printk(KERN_INFO "bl : failed to set brightness\n"); - ret = -ETIMEDOUT; - goto out; - } - - /* at this point we expect that the mcu has accepted - our command and is waiting for our new value - please note that maximum brightness is 255, - but due to physical layout it is equal to 0, so we simply - invert the value (MAX VALUE - NEW VALUE). */ - if (jornada_ssp_byte(BL_MAX_BRIGHT - bd->props.brightness) != TXDUMMY) { - printk(KERN_ERR "bl : set brightness failed\n"); - ret = -ETIMEDOUT; - } - - /* If infact we get an TXDUMMY as output we are happy and dont - make any further comments about it */ -out: - jornada_ssp_end(); - - return ret; -} - -static const struct backlight_ops jornada_bl_ops = { - .get_brightness = jornada_bl_get_brightness, - .update_status = jornada_bl_update_status, - .options = BL_CORE_SUSPENDRESUME, -}; - -static int jornada_bl_probe(struct platform_device *pdev) -{ - struct backlight_properties props; - int ret; - struct backlight_device *bd; - - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = BL_MAX_BRIGHT; - bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL, - &jornada_bl_ops, &props); - - if (IS_ERR(bd)) { - ret = PTR_ERR(bd); - printk(KERN_ERR "bl : failed to register device, err=%x\n", ret); - return ret; - } - - bd->props.power = FB_BLANK_UNBLANK; - bd->props.brightness = BL_DEF_BRIGHT; - /* note. make sure max brightness is set otherwise - you will get seemingly non-related errors when - trying to change brightness */ - jornada_bl_update_status(bd); - - platform_set_drvdata(pdev, bd); - printk(KERN_INFO "HP Jornada 700 series backlight driver\n"); - - return 0; -} - -static int jornada_bl_remove(struct platform_device *pdev) -{ - struct backlight_device *bd = platform_get_drvdata(pdev); - - backlight_device_unregister(bd); - - return 0; -} - -static struct platform_driver jornada_bl_driver = { - .probe = jornada_bl_probe, - .remove = jornada_bl_remove, - .driver = { - .name = "jornada_bl", - }, -}; - -module_platform_driver(jornada_bl_driver); - -MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson>"); -MODULE_DESCRIPTION("HP Jornada 710/720/728 Backlight driver"); -MODULE_LICENSE("GPL"); |