diff options
Diffstat (limited to 'drivers/video/backlight')
-rw-r--r-- | drivers/video/backlight/Kconfig | 8 | ||||
-rw-r--r-- | drivers/video/backlight/Makefile | 1 | ||||
-rw-r--r-- | drivers/video/backlight/progear_bl.c | 154 |
3 files changed, 163 insertions, 0 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 02f15297a021..cda32399c039 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig | |||
@@ -66,3 +66,11 @@ config BACKLIGHT_HP680 | |||
66 | If you have a HP Jornada 680, say y to enable the | 66 | If you have a HP Jornada 680, say y to enable the |
67 | backlight driver. | 67 | backlight driver. |
68 | 68 | ||
69 | config BACKLIGHT_PROGEAR | ||
70 | tristate "Frontpath ProGear Backlight Driver" | ||
71 | depends on BACKLIGHT_DEVICE && PCI && X86 | ||
72 | default n | ||
73 | help | ||
74 | If you have a Frontpath ProGear say Y to enable the | ||
75 | backlight driver. | ||
76 | |||
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index 65e5553fc849..0c3ce46f5094 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile | |||
@@ -5,3 +5,4 @@ obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o | |||
5 | obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o | 5 | obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o |
6 | obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o | 6 | obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o |
7 | obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o | 7 | obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o |
8 | obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o | ||
diff --git a/drivers/video/backlight/progear_bl.c b/drivers/video/backlight/progear_bl.c new file mode 100644 index 000000000000..13d831da8d96 --- /dev/null +++ b/drivers/video/backlight/progear_bl.c | |||
@@ -0,0 +1,154 @@ | |||
1 | /* | ||
2 | * Backlight Driver for Frontpath ProGear HX1050+ | ||
3 | * | ||
4 | * Copyright (c) 2006 Marcin Juszkiewicz | ||
5 | * | ||
6 | * Based on Progear LCD driver by M Schacht | ||
7 | * <mschacht at alumni dot washington dot edu> | ||
8 | * | ||
9 | * Based on Sharp's Corgi Backlight Driver | ||
10 | * Based on Backlight Driver for HP Jornada 680 | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or modify | ||
13 | * it under the terms of the GNU General Public License version 2 as | ||
14 | * published by the Free Software Foundation. | ||
15 | * | ||
16 | */ | ||
17 | |||
18 | #include <linux/module.h> | ||
19 | #include <linux/kernel.h> | ||
20 | #include <linux/init.h> | ||
21 | #include <linux/platform_device.h> | ||
22 | #include <linux/mutex.h> | ||
23 | #include <linux/fb.h> | ||
24 | #include <linux/backlight.h> | ||
25 | #include <linux/pci.h> | ||
26 | #include <asm/uaccess.h> | ||
27 | |||
28 | #define PMU_LPCR 0xB0 | ||
29 | #define SB_MPS1 0x61 | ||
30 | #define HW_LEVEL_MAX 0x77 | ||
31 | #define HW_LEVEL_MIN 0x4f | ||
32 | |||
33 | static struct pci_dev *pmu_dev = NULL; | ||
34 | static struct pci_dev *sb_dev = NULL; | ||
35 | |||
36 | static int progearbl_set_intensity(struct backlight_device *bd) | ||
37 | { | ||
38 | int intensity = bd->props->brightness; | ||
39 | |||
40 | if (bd->props->power != FB_BLANK_UNBLANK) | ||
41 | intensity = 0; | ||
42 | if (bd->props->fb_blank != FB_BLANK_UNBLANK) | ||
43 | intensity = 0; | ||
44 | |||
45 | pci_write_config_byte(pmu_dev, PMU_LPCR, intensity + HW_LEVEL_MIN); | ||
46 | |||
47 | return 0; | ||
48 | } | ||
49 | |||
50 | static int progearbl_get_intensity(struct backlight_device *bd) | ||
51 | { | ||
52 | u8 intensity; | ||
53 | pci_read_config_byte(pmu_dev, PMU_LPCR, &intensity); | ||
54 | |||
55 | return intensity - HW_LEVEL_MIN; | ||
56 | } | ||
57 | |||
58 | static struct backlight_properties progearbl_data = { | ||
59 | .owner = THIS_MODULE, | ||
60 | .get_brightness = progearbl_get_intensity, | ||
61 | .update_status = progearbl_set_intensity, | ||
62 | }; | ||
63 | |||
64 | static int progearbl_probe(struct platform_device *pdev) | ||
65 | { | ||
66 | u8 temp; | ||
67 | struct backlight_device *progear_backlight_device; | ||
68 | |||
69 | pmu_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, 0); | ||
70 | if (!pmu_dev) { | ||
71 | printk("ALI M7101 PMU not found.\n"); | ||
72 | return -ENODEV; | ||
73 | } | ||
74 | |||
75 | sb_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, 0); | ||
76 | if (!sb_dev) { | ||
77 | printk("ALI 1533 SB not found.\n"); | ||
78 | pci_dev_put(pmu_dev); | ||
79 | return -ENODEV; | ||
80 | } | ||
81 | |||
82 | /* Set SB_MPS1 to enable brightness control. */ | ||
83 | pci_read_config_byte(sb_dev, SB_MPS1, &temp); | ||
84 | pci_write_config_byte(sb_dev, SB_MPS1, temp | 0x20); | ||
85 | |||
86 | progear_backlight_device = backlight_device_register("progear-bl", | ||
87 | &pdev->dev, NULL, | ||
88 | &progearbl_data); | ||
89 | if (IS_ERR(progear_backlight_device)) | ||
90 | return PTR_ERR(progear_backlight_device); | ||
91 | |||
92 | platform_set_drvdata(pdev, progear_backlight_device); | ||
93 | |||
94 | progearbl_data.power = FB_BLANK_UNBLANK; | ||
95 | progearbl_data.brightness = HW_LEVEL_MAX - HW_LEVEL_MIN; | ||
96 | progearbl_data.max_brightness = HW_LEVEL_MAX - HW_LEVEL_MIN; | ||
97 | progearbl_set_intensity(progear_backlight_device); | ||
98 | |||
99 | return 0; | ||
100 | } | ||
101 | |||
102 | static int progearbl_remove(struct platform_device *pdev) | ||
103 | { | ||
104 | struct backlight_device *bd = platform_get_drvdata(pdev); | ||
105 | backlight_device_unregister(bd); | ||
106 | |||
107 | return 0; | ||
108 | } | ||
109 | |||
110 | static struct platform_driver progearbl_driver = { | ||
111 | .probe = progearbl_probe, | ||
112 | .remove = progearbl_remove, | ||
113 | .driver = { | ||
114 | .name = "progear-bl", | ||
115 | }, | ||
116 | }; | ||
117 | |||
118 | static struct platform_device *progearbl_device; | ||
119 | |||
120 | static int __init progearbl_init(void) | ||
121 | { | ||
122 | int ret = platform_driver_register(&progearbl_driver); | ||
123 | |||
124 | if (!ret) { | ||
125 | progearbl_device = platform_device_alloc("progear-bl", -1); | ||
126 | if (!progearbl_device) | ||
127 | return -ENOMEM; | ||
128 | |||
129 | ret = platform_device_add(progearbl_device); | ||
130 | |||
131 | if (ret) { | ||
132 | platform_device_put(progearbl_device); | ||
133 | platform_driver_unregister(&progearbl_driver); | ||
134 | } | ||
135 | } | ||
136 | |||
137 | return ret; | ||
138 | } | ||
139 | |||
140 | static void __exit progearbl_exit(void) | ||
141 | { | ||
142 | pci_dev_put(pmu_dev); | ||
143 | pci_dev_put(sb_dev); | ||
144 | |||
145 | platform_device_unregister(progearbl_device); | ||
146 | platform_driver_unregister(&progearbl_driver); | ||
147 | } | ||
148 | |||
149 | module_init(progearbl_init); | ||
150 | module_exit(progearbl_exit); | ||
151 | |||
152 | MODULE_AUTHOR("Marcin Juszkiewicz <linux@hrw.one.pl>"); | ||
153 | MODULE_DESCRIPTION("ProGear Backlight Driver"); | ||
154 | MODULE_LICENSE("GPL"); | ||