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htcleo: new button backlight manager driver

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- Now button backlight is managed by this driver, also it is configurable by sysfs (number of secs. after backlight will be turned off after last key-press, enable/disable this auto_off feature)
-When disabled auto_off, backlight will go off along with screen backlight.
- Sysfs for num. of seconds : /sys/devices/platform/btn_backlight_manager/off_seconds
(min: 5 sec, max: 60 sec)
- Sysfs for turn on/off auto-off feature: /sys/devices/platform/btn_backlight_manager/auto_off
(0 to disable auto-off, 1 to enable)
This commit is contained in:
Danijel Posilović
2010-11-26 18:49:38 +01:00
committed by tytung
parent c3c716173f
commit 86ad764392
6 changed files with 233 additions and 58 deletions
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1
arch/arm/configs/htcleo_defconfig
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@@ -232,6 +232,7 @@ CONFIG_MSM_DEBUG_UART_NONE=y
CONFIG_MACH_HTCLEO=y
# CONFIG_USING_BRAVOS_DSP is not set
# CONFIG_HTCLEO_BLINK_AT_BOOT is not set
CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER=y
# CONFIG_MACH_PASSIONC is not set
# CONFIG_MACH_BRAVOC is not set
# CONFIG_MACH_INCREDIBLE is not set

7
arch/arm/mach-msm/Kconfig
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@@ -296,6 +296,13 @@ config HTCLEO_BLINK_AT_BOOT
help
Blink flash led during hardware init
config HTCLEO_BTN_BACKLIGHT_MANAGER
depends on MACH_HTCLEO
default y
bool "Use button backlight manager"
help
Use kernel button backlight manager to turn on/off backlight
config MACH_PASSIONC
depends on ARCH_QSD8X50
default n

1
arch/arm/mach-msm/Makefile
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@@ -127,6 +127,7 @@ obj-$(CONFIG_MACH_HTCLEO) += board-htcleo-proximity.o board-htcleo-ls.o
obj-$(CONFIG_MACH_HTCLEO) += clock-wince.o
obj-$(CONFIG_HTCLEO_BACKLIGHT) += board-htcleo-bl.o
obj-$(CONFIG_HTCLEO_BACKLIGHT_LED) += board-htcleo-bl-led.o
obj-$(CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER) += board-htcleo-btn_backlight-manager.o
# MSM7x30 boards
obj-$(CONFIG_ARCH_MSM7X30) += panel-samsungwvga-tl2796a.o panel-samsungwvga-s6e63m0.o panel-sonywvga-s6d16a0x21-7x30.o

56
arch/arm/mach-msm/board-htcleo-bl-led.c
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@@ -2,6 +2,7 @@
*
* Copyright (c) 2010 Cotulla
* Edited to Common Structure by Markinus
* Added support for Button backlight manager by Danijel Posilović (dan1j3l)
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -37,17 +38,15 @@
#endif
#define HTCLEO_DEFAULT_BACKLIGHT_BRIGHTNESS 255
int BUTTON_BACKLIGHT_GPIO = 48;
static struct led_trigger *htcleo_lcd_backlight;
static int auto_bl_state=0;
static DEFINE_MUTEX(htcleo_backlight_lock);
static int btn_backlight_control = 1;
static struct delayed_off
{
struct delayed_work work;
} delayed_off_work;
#ifdef CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER
static int BUTTON_BACKLIGHT_GPIO = 48;
#endif
static int htcleo_brightness_autobacklight(uint8_t value)
{
@@ -92,47 +91,16 @@ static ssize_t htcleo_auto_bl_set(struct device *dev,
static DEVICE_ATTR(auto_bl, 0666, htcleo_auto_bl_get, htcleo_auto_bl_set);
//////////////////////////////////////////////////////
// Button backlight control
//////////////////////////////////////////////////////
static void btn_delayed_off_function(struct work_struct *work){
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 0);
}
static ssize_t htcleo_btn_control_get(struct device *dev,struct device_attribute *attr, char *buf)
{
int ret;
ret = sprintf(buf, "%d", btn_backlight_control);
return ret;
}
static ssize_t htcleo_btn_control_set(struct device *dev,struct device_attribute *attr,const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_backlight_lock);
sscanf(buf, "%d", &set_state);
if(set_state!=0 && set_state!=1) return -EINVAL;
btn_backlight_control = set_state;
gpio_set_value(BUTTON_BACKLIGHT_GPIO, set_state);
mutex_unlock(&htcleo_backlight_lock);
return count;
}
static DEVICE_ATTR(btn_control, 0666, htcleo_btn_control_get, htcleo_btn_control_set);
static int htcleo_brightness_onoff_bkl(int enable)
{
int ret;
uint8_t data[1];
// If btn backlight control enabled then set it
if (btn_backlight_control){
// Enable backlight
gpio_set_value(BUTTON_BACKLIGHT_GPIO, enable);
// Schedule timed off dan1j3l TODO !!!
//cancel_delayed_work_sync(&delayed_off_work.work);
//schedule_delayed_work(&delayed_off_work.work, msecs_to_jiffies(10000));
}
#ifdef CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER
// Disable button backlight along with screen
if (!enable)
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 0);
#endif
data[0] = enable ? 1 : 0;
ret = microp_i2c_write(MICROP_I2C_WCMD_BL_EN, data, 1);
@@ -204,9 +172,6 @@ static int htcleo_backlight_probe(struct platform_device *pdev)
rc = device_create_file(&pdev->dev, &dev_attr_auto_bl);
printk(KERN_INFO "%s: HTCLeo Backlight connect with microP: "
"Probe\n", __func__);
// Kernel button backlight control
rc = device_create_file(&pdev->dev, &dev_attr_btn_control);
INIT_DELAYED_WORK(&delayed_off_work.work, btn_delayed_off_function);
led_trigger_register_simple("lcd-backlight-gate", &htcleo_lcd_backlight);
rc = led_classdev_register(&pdev->dev, &htcleo_backlight_led);
@@ -220,7 +185,6 @@ static int htcleo_backlight_probe(struct platform_device *pdev)
static int htcleo_backlight_remove(struct platform_device *pdev)
{
device_remove_file(&pdev->dev, &dev_attr_auto_bl);
device_remove_file(&pdev->dev, &dev_attr_btn_control);
return 0;
}

188
arch/arm/mach-msm/board-htcleo-btn_backlight-manager.c Normal file
View File

@@ -0,0 +1,188 @@
/* board-htcleo_btn_backlight-manager.c
*
* Driver for managing buttons backlight
*
* Copyright (C) 2010 Danijel Posilović (dan1j3l) <danijel.posilovic@gmail.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program 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.
*
*/
#include <linux/keyboard.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
static int BUTTON_BACKLIGHT_GPIO = 48;
static int OFF_SEC = 10;
static int auto_off_enabled = 1;
static struct delayed_off
{
struct delayed_work work;
} btn_off_work;
static DEFINE_MUTEX(htcleo_btn_manager_lock);
////////////////////////////////////////////////////
// off_sec sysfs
static ssize_t htcleo_manager_offsec_get(struct device *dev,struct device_attribute *attr, char *buf)
{
int ret;
ret = sprintf(buf, "%d", OFF_SEC);
return ret;
}
static ssize_t htcleo_manager_offsec_set(struct device *dev,struct device_attribute *attr,const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_btn_manager_lock);
sscanf(buf, "%d", &set_state);
if (set_state < 5)
set_state = 5;
if (set_state > 60)
set_state=60;
OFF_SEC = set_state;
mutex_unlock(&htcleo_btn_manager_lock);
return count;
}
static DEVICE_ATTR(off_seconds, 0666, htcleo_manager_offsec_get, htcleo_manager_offsec_set);
// auto_off sysfs
static ssize_t htcleo_manager_auto_off_get(struct device *dev,struct device_attribute *attr, char *buf)
{
int ret;
ret = sprintf(buf, "%d", auto_off_enabled);
return ret;
}
static ssize_t htcleo_manager_auto_off_set(struct device *dev,struct device_attribute *attr,const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_btn_manager_lock);
sscanf(buf, "%d", &set_state);
if (set_state < 0)
set_state = 0;
if (set_state > 1)
set_state=1;
auto_off_enabled = set_state;
mutex_unlock(&htcleo_btn_manager_lock);
return count;
}
static DEVICE_ATTR(auto_off, 0666, htcleo_manager_auto_off_get, htcleo_manager_auto_off_set);
static void btn_delayed_off_function(struct work_struct *work){
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 0);
}
int buttons_notify(struct notifier_block *nblock, unsigned long code, void *_param) {
struct keyboard_notifier_param *param = _param;
int keycode;
if (code == KBD_KEYCODE) {
mutex_lock(&htcleo_btn_manager_lock);
keycode = param->value;
//printk(KERN_DEBUG "BTN-BCKM: KEYLOGGER %i %s\n", param->value, (param->down ? "down" : "up"));
// Turn backlight on only if pressed = Dial, home, winkey, back, end button
if (keycode==231 || keycode==102 || keycode==139 || keycode==158 || keycode==107){
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 1);
// If auto off enabled then buttons will turn off after declared amount of time, else screen backlight will turn them off
if (auto_off_enabled){
cancel_delayed_work_sync(&btn_off_work.work);
schedule_delayed_work(&btn_off_work.work, msecs_to_jiffies(OFF_SEC*1000));
}
}
mutex_unlock(&htcleo_btn_manager_lock);
};
return 0;
}
static struct notifier_block nb = {
.notifier_call = buttons_notify
};
static int htcleo_btn_backlight_manager_probe(struct platform_device *pdev)
{
int rc;
printk("BTN-BCKM: Registering btn manager...\n");
register_keyboard_notifier(&nb);
rc = device_create_file(&pdev->dev, &dev_attr_off_seconds);
rc = device_create_file(&pdev->dev, &dev_attr_auto_off);
INIT_DELAYED_WORK(&btn_off_work.work, btn_delayed_off_function);
return 0;
}
static int htcleo_btn_backlight_manager_remove(struct platform_device *pdev)
{
printk("BTN-BCKM: Deactivating btn manager...\n");
unregister_keyboard_notifier(&nb);
device_remove_file(&pdev->dev, &dev_attr_off_seconds);
device_remove_file(&pdev->dev,&dev_attr_auto_off);
return 0;
}
static struct platform_driver htcleo_btn_backlight_manager = {
.probe = htcleo_btn_backlight_manager_probe,
.remove= htcleo_btn_backlight_manager_remove,
.driver = {
.name = "btn_backlight_manager",
.owner = THIS_MODULE
},
};
static int __init backlight_manager_init(void)
{
return platform_driver_register(&htcleo_btn_backlight_manager);
}
static void __exit backlight_manager_exit(void)
{
platform_driver_unregister(&htcleo_btn_backlight_manager);
}
module_init(backlight_manager_init);
module_exit(backlight_manager_exit);
MODULE_AUTHOR("Danijel Posilović (dan1j3l) <danijel.posilovic@gmail.com>");
MODULE_DESCRIPTION("Button Backlight Manager");
MODULE_LICENSE("GPL");

38
arch/arm/mach-msm/board-htcleo.c
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@@ -63,7 +63,7 @@
#include "dex_comm.h"
#define ATAG_MAGLDR_BOOT 0x4C47414D
#define ATAG_MAGLDR_BOOT 0x4C47414D
struct tag_magldr_entry
{
_Bool fNoNandBoot;
@@ -80,7 +80,7 @@ static unsigned int nand_boot = 0;
///////////////////////////////////////////////////////////////////////
int htcleo_is_nand_boot(void)
{
return nand_boot;
return nand_boot;
}
static int __init parse_tag_nand_boot(const struct tag *tag)
@@ -240,10 +240,10 @@ static struct platform_device microp_devices[] = {
{
.name = "leds-microp",
.id = -1,
.dev = {
.dev = {
.platform_data = &microp_leds_data,
},
},
{
.name = "htcleo-lsensor",
@@ -282,7 +282,7 @@ static struct i2c_board_info base_i2c_devices[] =
};
///////////////////////////////////////////////////////////////////////
// USB
// USB
///////////////////////////////////////////////////////////////////////
static uint32_t usb_phy_3v3_table[] =
@@ -706,7 +706,7 @@ static struct platform_device msm_kgsl_device =
};
///////////////////////////////////////////////////////////////////////
// Memory
// Memory
///////////////////////////////////////////////////////////////////////
static struct android_pmem_platform_data mdp_pmem_pdata = {
@@ -824,6 +824,17 @@ struct platform_device msm_device_rtc = {
.name = "msm_rtc",
.id = -1,
};
#ifdef CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER
///////////////////////////////////////////////////////////////////////
// Button backlight manager
///////////////////////////////////////////////////////////////////////
struct platform_device btn_backlight_manager = {
.name = "btn_backlight_manager",
.id = -1,
};
#endif
///////////////////////////////////////////////////////////////////////
// Platform Devices
///////////////////////////////////////////////////////////////////////
@@ -854,6 +865,9 @@ static struct platform_device *devices[] __initdata =
&qsd_device_spi,
&htc_headset_mgr,
&htc_headset_gpio,
#ifdef CONFIG_HTCLEO_BTN_BACKLIGHT_MANAGER
&btn_backlight_manager,
#endif
};
///////////////////////////////////////////////////////////////////////
// Vibrator
@@ -962,7 +976,7 @@ static void __init htcleo_init(void)
do_sdc1_reset();
msm_acpu_clock_init(&htcleo_clock_data);
perflock_init(&htcleo_perflock_data);
init_dex_comm();
@@ -975,7 +989,7 @@ static void __init htcleo_init(void)
bt_export_bd_address();
htcleo_audio_init();
msm_device_i2c_init();
/* set the gpu power rail to manual mode so clk en/dis will not
@@ -985,7 +999,7 @@ static void __init htcleo_init(void)
htcleo_kgsl_power(false);
mdelay(100);
htcleo_kgsl_power(true);
platform_add_devices(devices, ARRAY_SIZE(devices));
htcleo_init_panel();
@@ -996,11 +1010,11 @@ static void __init htcleo_init(void)
#ifdef CONFIG_USB_ANDROID
htcleo_add_usb_devices();
#endif
htcleo_init_mmc(0);
platform_device_register(&htcleo_timed_gpios);
/* Blink the camera LED shortly to show that we're alive! */
#ifdef CONFIG_HTCLEO_BLINK_AT_BOOT
bank6_in = (unsigned int*)(MSM_GPIO1_BASE + 0x0864);
@@ -1078,7 +1092,7 @@ static void __init htcleo_map_io(void)
msm_map_common_io();
htcleo_allocate_memory_regions();
msm_clock_init();
#if defined(CONFIG_VERY_EARLY_CONSOLE)
// Init our consoles _really_ early
#if defined(CONFIG_HTC_FB_CONSOLE)