forked from Minki/linux
backlight: Add Frontpath ProGear HX1050+ driver
Add control of LCD backlight for Frontpath ProGear HX1050+. Patch is based on http://downloads.sf.net/progear/progear-lcd-0.2.tar.gz driver by M Schacht. Signed-off-by: Marcin Juszkiewicz <openembedded@hrw.one.pl> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
This commit is contained in:
parent
300abeb549
commit
7a208463b2
@ -66,3 +66,11 @@ config BACKLIGHT_HP680
|
||||
If you have a HP Jornada 680, say y to enable the
|
||||
backlight driver.
|
||||
|
||||
config BACKLIGHT_PROGEAR
|
||||
tristate "Frontpath ProGear Backlight Driver"
|
||||
depends on BACKLIGHT_DEVICE && PCI && X86
|
||||
default n
|
||||
help
|
||||
If you have a Frontpath ProGear say Y to enable the
|
||||
backlight driver.
|
||||
|
||||
|
@ -5,3 +5,4 @@ obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
|
||||
obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o
|
||||
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
|
||||
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
|
||||
obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
|
||||
|
154
drivers/video/backlight/progear_bl.c
Normal file
154
drivers/video/backlight/progear_bl.c
Normal file
@ -0,0 +1,154 @@
|
||||
/*
|
||||
* Backlight Driver for Frontpath ProGear HX1050+
|
||||
*
|
||||
* Copyright (c) 2006 Marcin Juszkiewicz
|
||||
*
|
||||
* Based on Progear LCD driver by M Schacht
|
||||
* <mschacht at alumni dot washington dot edu>
|
||||
*
|
||||
* Based on Sharp's Corgi Backlight Driver
|
||||
* Based on Backlight Driver for HP Jornada 680
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/pci.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#define PMU_LPCR 0xB0
|
||||
#define SB_MPS1 0x61
|
||||
#define HW_LEVEL_MAX 0x77
|
||||
#define HW_LEVEL_MIN 0x4f
|
||||
|
||||
static struct pci_dev *pmu_dev = NULL;
|
||||
static struct pci_dev *sb_dev = NULL;
|
||||
|
||||
static int progearbl_set_intensity(struct backlight_device *bd)
|
||||
{
|
||||
int intensity = bd->props->brightness;
|
||||
|
||||
if (bd->props->power != FB_BLANK_UNBLANK)
|
||||
intensity = 0;
|
||||
if (bd->props->fb_blank != FB_BLANK_UNBLANK)
|
||||
intensity = 0;
|
||||
|
||||
pci_write_config_byte(pmu_dev, PMU_LPCR, intensity + HW_LEVEL_MIN);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int progearbl_get_intensity(struct backlight_device *bd)
|
||||
{
|
||||
u8 intensity;
|
||||
pci_read_config_byte(pmu_dev, PMU_LPCR, &intensity);
|
||||
|
||||
return intensity - HW_LEVEL_MIN;
|
||||
}
|
||||
|
||||
static struct backlight_properties progearbl_data = {
|
||||
.owner = THIS_MODULE,
|
||||
.get_brightness = progearbl_get_intensity,
|
||||
.update_status = progearbl_set_intensity,
|
||||
};
|
||||
|
||||
static int progearbl_probe(struct platform_device *pdev)
|
||||
{
|
||||
u8 temp;
|
||||
struct backlight_device *progear_backlight_device;
|
||||
|
||||
pmu_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, 0);
|
||||
if (!pmu_dev) {
|
||||
printk("ALI M7101 PMU not found.\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
sb_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, 0);
|
||||
if (!sb_dev) {
|
||||
printk("ALI 1533 SB not found.\n");
|
||||
pci_dev_put(pmu_dev);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Set SB_MPS1 to enable brightness control. */
|
||||
pci_read_config_byte(sb_dev, SB_MPS1, &temp);
|
||||
pci_write_config_byte(sb_dev, SB_MPS1, temp | 0x20);
|
||||
|
||||
progear_backlight_device = backlight_device_register("progear-bl",
|
||||
&pdev->dev, NULL,
|
||||
&progearbl_data);
|
||||
if (IS_ERR(progear_backlight_device))
|
||||
return PTR_ERR(progear_backlight_device);
|
||||
|
||||
platform_set_drvdata(pdev, progear_backlight_device);
|
||||
|
||||
progearbl_data.power = FB_BLANK_UNBLANK;
|
||||
progearbl_data.brightness = HW_LEVEL_MAX - HW_LEVEL_MIN;
|
||||
progearbl_data.max_brightness = HW_LEVEL_MAX - HW_LEVEL_MIN;
|
||||
progearbl_set_intensity(progear_backlight_device);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int progearbl_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bd = platform_get_drvdata(pdev);
|
||||
backlight_device_unregister(bd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver progearbl_driver = {
|
||||
.probe = progearbl_probe,
|
||||
.remove = progearbl_remove,
|
||||
.driver = {
|
||||
.name = "progear-bl",
|
||||
},
|
||||
};
|
||||
|
||||
static struct platform_device *progearbl_device;
|
||||
|
||||
static int __init progearbl_init(void)
|
||||
{
|
||||
int ret = platform_driver_register(&progearbl_driver);
|
||||
|
||||
if (!ret) {
|
||||
progearbl_device = platform_device_alloc("progear-bl", -1);
|
||||
if (!progearbl_device)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = platform_device_add(progearbl_device);
|
||||
|
||||
if (ret) {
|
||||
platform_device_put(progearbl_device);
|
||||
platform_driver_unregister(&progearbl_driver);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit progearbl_exit(void)
|
||||
{
|
||||
pci_dev_put(pmu_dev);
|
||||
pci_dev_put(sb_dev);
|
||||
|
||||
platform_device_unregister(progearbl_device);
|
||||
platform_driver_unregister(&progearbl_driver);
|
||||
}
|
||||
|
||||
module_init(progearbl_init);
|
||||
module_exit(progearbl_exit);
|
||||
|
||||
MODULE_AUTHOR("Marcin Juszkiewicz <linux@hrw.one.pl>");
|
||||
MODULE_DESCRIPTION("ProGear Backlight Driver");
|
||||
MODULE_LICENSE("GPL");
|
Loading…
Reference in New Issue
Block a user