diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/adp8870_bl.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/backlight/adp8870_bl.c | 999 |
1 files changed, 0 insertions, 999 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/adp8870_bl.c b/ANDROID_3.4.5/drivers/video/backlight/adp8870_bl.c deleted file mode 100644 index 9be58c6f..00000000 --- a/ANDROID_3.4.5/drivers/video/backlight/adp8870_bl.c +++ /dev/null @@ -1,999 +0,0 @@ -/* - * Backlight driver for Analog Devices ADP8870 Backlight Devices - * - * Copyright 2009-2011 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/pm.h> -#include <linux/platform_device.h> -#include <linux/i2c.h> -#include <linux/fb.h> -#include <linux/backlight.h> -#include <linux/leds.h> -#include <linux/workqueue.h> -#include <linux/slab.h> - -#include <linux/i2c/adp8870.h> -#define ADP8870_EXT_FEATURES -#define ADP8870_USE_LEDS - - -#define ADP8870_MFDVID 0x00 /* Manufacturer and device ID */ -#define ADP8870_MDCR 0x01 /* Device mode and status */ -#define ADP8870_INT_STAT 0x02 /* Interrupts status */ -#define ADP8870_INT_EN 0x03 /* Interrupts enable */ -#define ADP8870_CFGR 0x04 /* Configuration register */ -#define ADP8870_BLSEL 0x05 /* Sink enable backlight or independent */ -#define ADP8870_PWMLED 0x06 /* PWM Enable Selection Register */ -#define ADP8870_BLOFF 0x07 /* Backlight off timeout */ -#define ADP8870_BLDIM 0x08 /* Backlight dim timeout */ -#define ADP8870_BLFR 0x09 /* Backlight fade in and out rates */ -#define ADP8870_BLMX1 0x0A /* Backlight (Brightness Level 1-daylight) maximum current */ -#define ADP8870_BLDM1 0x0B /* Backlight (Brightness Level 1-daylight) dim current */ -#define ADP8870_BLMX2 0x0C /* Backlight (Brightness Level 2-bright) maximum current */ -#define ADP8870_BLDM2 0x0D /* Backlight (Brightness Level 2-bright) dim current */ -#define ADP8870_BLMX3 0x0E /* Backlight (Brightness Level 3-office) maximum current */ -#define ADP8870_BLDM3 0x0F /* Backlight (Brightness Level 3-office) dim current */ -#define ADP8870_BLMX4 0x10 /* Backlight (Brightness Level 4-indoor) maximum current */ -#define ADP8870_BLDM4 0x11 /* Backlight (Brightness Level 4-indoor) dim current */ -#define ADP8870_BLMX5 0x12 /* Backlight (Brightness Level 5-dark) maximum current */ -#define ADP8870_BLDM5 0x13 /* Backlight (Brightness Level 5-dark) dim current */ -#define ADP8870_ISCLAW 0x1A /* Independent sink current fade law register */ -#define ADP8870_ISCC 0x1B /* Independent sink current control register */ -#define ADP8870_ISCT1 0x1C /* Independent Sink Current Timer Register LED[7:5] */ -#define ADP8870_ISCT2 0x1D /* Independent Sink Current Timer Register LED[4:1] */ -#define ADP8870_ISCF 0x1E /* Independent sink current fade register */ -#define ADP8870_ISC1 0x1F /* Independent Sink Current LED1 */ -#define ADP8870_ISC2 0x20 /* Independent Sink Current LED2 */ -#define ADP8870_ISC3 0x21 /* Independent Sink Current LED3 */ -#define ADP8870_ISC4 0x22 /* Independent Sink Current LED4 */ -#define ADP8870_ISC5 0x23 /* Independent Sink Current LED5 */ -#define ADP8870_ISC6 0x24 /* Independent Sink Current LED6 */ -#define ADP8870_ISC7 0x25 /* Independent Sink Current LED7 (Brightness Level 1-daylight) */ -#define ADP8870_ISC7_L2 0x26 /* Independent Sink Current LED7 (Brightness Level 2-bright) */ -#define ADP8870_ISC7_L3 0x27 /* Independent Sink Current LED7 (Brightness Level 3-office) */ -#define ADP8870_ISC7_L4 0x28 /* Independent Sink Current LED7 (Brightness Level 4-indoor) */ -#define ADP8870_ISC7_L5 0x29 /* Independent Sink Current LED7 (Brightness Level 5-dark) */ -#define ADP8870_CMP_CTL 0x2D /* ALS Comparator Control Register */ -#define ADP8870_ALS1_EN 0x2E /* Main ALS comparator level enable */ -#define ADP8870_ALS2_EN 0x2F /* Second ALS comparator level enable */ -#define ADP8870_ALS1_STAT 0x30 /* Main ALS Comparator Status Register */ -#define ADP8870_ALS2_STAT 0x31 /* Second ALS Comparator Status Register */ -#define ADP8870_L2TRP 0x32 /* L2 comparator reference */ -#define ADP8870_L2HYS 0x33 /* L2 hysteresis */ -#define ADP8870_L3TRP 0x34 /* L3 comparator reference */ -#define ADP8870_L3HYS 0x35 /* L3 hysteresis */ -#define ADP8870_L4TRP 0x36 /* L4 comparator reference */ -#define ADP8870_L4HYS 0x37 /* L4 hysteresis */ -#define ADP8870_L5TRP 0x38 /* L5 comparator reference */ -#define ADP8870_L5HYS 0x39 /* L5 hysteresis */ -#define ADP8870_PH1LEVL 0x40 /* First phototransistor ambient light level-low byte register */ -#define ADP8870_PH1LEVH 0x41 /* First phototransistor ambient light level-high byte register */ -#define ADP8870_PH2LEVL 0x42 /* Second phototransistor ambient light level-low byte register */ -#define ADP8870_PH2LEVH 0x43 /* Second phototransistor ambient light level-high byte register */ - -#define ADP8870_MANUFID 0x3 /* Analog Devices AD8870 Manufacturer and device ID */ -#define ADP8870_DEVID(x) ((x) & 0xF) -#define ADP8870_MANID(x) ((x) >> 4) - -/* MDCR Device mode and status */ -#define D7ALSEN (1 << 7) -#define INT_CFG (1 << 6) -#define NSTBY (1 << 5) -#define DIM_EN (1 << 4) -#define GDWN_DIS (1 << 3) -#define SIS_EN (1 << 2) -#define CMP_AUTOEN (1 << 1) -#define BLEN (1 << 0) - -/* ADP8870_ALS1_EN Main ALS comparator level enable */ -#define L5_EN (1 << 3) -#define L4_EN (1 << 2) -#define L3_EN (1 << 1) -#define L2_EN (1 << 0) - -#define CFGR_BLV_SHIFT 3 -#define CFGR_BLV_MASK 0x7 -#define ADP8870_FLAG_LED_MASK 0xFF - -#define FADE_VAL(in, out) ((0xF & (in)) | ((0xF & (out)) << 4)) -#define BL_CFGR_VAL(law, blv) ((((blv) & CFGR_BLV_MASK) << CFGR_BLV_SHIFT) | ((0x3 & (law)) << 1)) -#define ALS_CMPR_CFG_VAL(filt) ((0x7 & (filt)) << 1) - -struct adp8870_bl { - struct i2c_client *client; - struct backlight_device *bl; - struct adp8870_led *led; - struct adp8870_backlight_platform_data *pdata; - struct mutex lock; - unsigned long cached_daylight_max; - int id; - int revid; - int current_brightness; -}; - -struct adp8870_led { - struct led_classdev cdev; - struct work_struct work; - struct i2c_client *client; - enum led_brightness new_brightness; - int id; - int flags; -}; - -static int adp8870_read(struct i2c_client *client, int reg, uint8_t *val) -{ - int ret; - - ret = i2c_smbus_read_byte_data(client, reg); - if (ret < 0) { - dev_err(&client->dev, "failed reading at 0x%02x\n", reg); - return ret; - } - - *val = ret; - return 0; -} - - -static int adp8870_write(struct i2c_client *client, u8 reg, u8 val) -{ - int ret = i2c_smbus_write_byte_data(client, reg, val); - if (ret) - dev_err(&client->dev, "failed to write\n"); - - return ret; -} - -static int adp8870_set_bits(struct i2c_client *client, int reg, uint8_t bit_mask) -{ - struct adp8870_bl *data = i2c_get_clientdata(client); - uint8_t reg_val; - int ret; - - mutex_lock(&data->lock); - - ret = adp8870_read(client, reg, ®_val); - - if (!ret && ((reg_val & bit_mask) != bit_mask)) { - reg_val |= bit_mask; - ret = adp8870_write(client, reg, reg_val); - } - - mutex_unlock(&data->lock); - return ret; -} - -static int adp8870_clr_bits(struct i2c_client *client, int reg, uint8_t bit_mask) -{ - struct adp8870_bl *data = i2c_get_clientdata(client); - uint8_t reg_val; - int ret; - - mutex_lock(&data->lock); - - ret = adp8870_read(client, reg, ®_val); - - if (!ret && (reg_val & bit_mask)) { - reg_val &= ~bit_mask; - ret = adp8870_write(client, reg, reg_val); - } - - mutex_unlock(&data->lock); - return ret; -} - -/* - * Independent sink / LED - */ -#if defined(ADP8870_USE_LEDS) -static void adp8870_led_work(struct work_struct *work) -{ - struct adp8870_led *led = container_of(work, struct adp8870_led, work); - adp8870_write(led->client, ADP8870_ISC1 + led->id - 1, - led->new_brightness >> 1); -} - -static void adp8870_led_set(struct led_classdev *led_cdev, - enum led_brightness value) -{ - struct adp8870_led *led; - - led = container_of(led_cdev, struct adp8870_led, cdev); - led->new_brightness = value; - /* - * Use workqueue for IO since I2C operations can sleep. - */ - schedule_work(&led->work); -} - -static int adp8870_led_setup(struct adp8870_led *led) -{ - struct i2c_client *client = led->client; - int ret = 0; - - ret = adp8870_write(client, ADP8870_ISC1 + led->id - 1, 0); - if (ret) - return ret; - - ret = adp8870_set_bits(client, ADP8870_ISCC, 1 << (led->id - 1)); - if (ret) - return ret; - - if (led->id > 4) - ret = adp8870_set_bits(client, ADP8870_ISCT1, - (led->flags & 0x3) << ((led->id - 5) * 2)); - else - ret = adp8870_set_bits(client, ADP8870_ISCT2, - (led->flags & 0x3) << ((led->id - 1) * 2)); - - return ret; -} - -static int __devinit adp8870_led_probe(struct i2c_client *client) -{ - struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; - struct adp8870_bl *data = i2c_get_clientdata(client); - struct adp8870_led *led, *led_dat; - struct led_info *cur_led; - int ret, i; - - - led = kcalloc(pdata->num_leds, sizeof(*led), GFP_KERNEL); - if (led == NULL) { - dev_err(&client->dev, "failed to alloc memory\n"); - return -ENOMEM; - } - - ret = adp8870_write(client, ADP8870_ISCLAW, pdata->led_fade_law); - if (ret) - goto err_free; - - ret = adp8870_write(client, ADP8870_ISCT1, - (pdata->led_on_time & 0x3) << 6); - if (ret) - goto err_free; - - ret = adp8870_write(client, ADP8870_ISCF, - FADE_VAL(pdata->led_fade_in, pdata->led_fade_out)); - if (ret) - goto err_free; - - for (i = 0; i < pdata->num_leds; ++i) { - cur_led = &pdata->leds[i]; - led_dat = &led[i]; - - led_dat->id = cur_led->flags & ADP8870_FLAG_LED_MASK; - - if (led_dat->id > 7 || led_dat->id < 1) { - dev_err(&client->dev, "Invalid LED ID %d\n", - led_dat->id); - goto err; - } - - if (pdata->bl_led_assign & (1 << (led_dat->id - 1))) { - dev_err(&client->dev, "LED %d used by Backlight\n", - led_dat->id); - goto err; - } - - led_dat->cdev.name = cur_led->name; - led_dat->cdev.default_trigger = cur_led->default_trigger; - led_dat->cdev.brightness_set = adp8870_led_set; - led_dat->cdev.brightness = LED_OFF; - led_dat->flags = cur_led->flags >> FLAG_OFFT_SHIFT; - led_dat->client = client; - led_dat->new_brightness = LED_OFF; - INIT_WORK(&led_dat->work, adp8870_led_work); - - ret = led_classdev_register(&client->dev, &led_dat->cdev); - if (ret) { - dev_err(&client->dev, "failed to register LED %d\n", - led_dat->id); - goto err; - } - - ret = adp8870_led_setup(led_dat); - if (ret) { - dev_err(&client->dev, "failed to write\n"); - i++; - goto err; - } - } - - data->led = led; - - return 0; - - err: - for (i = i - 1; i >= 0; --i) { - led_classdev_unregister(&led[i].cdev); - cancel_work_sync(&led[i].work); - } - - err_free: - kfree(led); - - return ret; -} - -static int __devexit adp8870_led_remove(struct i2c_client *client) -{ - struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; - struct adp8870_bl *data = i2c_get_clientdata(client); - int i; - - for (i = 0; i < pdata->num_leds; i++) { - led_classdev_unregister(&data->led[i].cdev); - cancel_work_sync(&data->led[i].work); - } - - kfree(data->led); - return 0; -} -#else -static int __devinit adp8870_led_probe(struct i2c_client *client) -{ - return 0; -} - -static int __devexit adp8870_led_remove(struct i2c_client *client) -{ - return 0; -} -#endif - -static int adp8870_bl_set(struct backlight_device *bl, int brightness) -{ - struct adp8870_bl *data = bl_get_data(bl); - struct i2c_client *client = data->client; - int ret = 0; - - if (data->pdata->en_ambl_sens) { - if ((brightness > 0) && (brightness < ADP8870_MAX_BRIGHTNESS)) { - /* Disable Ambient Light auto adjust */ - ret = adp8870_clr_bits(client, ADP8870_MDCR, - CMP_AUTOEN); - if (ret) - return ret; - ret = adp8870_write(client, ADP8870_BLMX1, brightness); - if (ret) - return ret; - } else { - /* - * MAX_BRIGHTNESS -> Enable Ambient Light auto adjust - * restore daylight l1 sysfs brightness - */ - ret = adp8870_write(client, ADP8870_BLMX1, - data->cached_daylight_max); - if (ret) - return ret; - - ret = adp8870_set_bits(client, ADP8870_MDCR, - CMP_AUTOEN); - if (ret) - return ret; - } - } else { - ret = adp8870_write(client, ADP8870_BLMX1, brightness); - if (ret) - return ret; - } - - if (data->current_brightness && brightness == 0) - ret = adp8870_set_bits(client, - ADP8870_MDCR, DIM_EN); - else if (data->current_brightness == 0 && brightness) - ret = adp8870_clr_bits(client, - ADP8870_MDCR, DIM_EN); - - if (!ret) - data->current_brightness = brightness; - - return ret; -} - -static int adp8870_bl_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 adp8870_bl_set(bl, brightness); -} - -static int adp8870_bl_get_brightness(struct backlight_device *bl) -{ - struct adp8870_bl *data = bl_get_data(bl); - - return data->current_brightness; -} - -static const struct backlight_ops adp8870_bl_ops = { - .update_status = adp8870_bl_update_status, - .get_brightness = adp8870_bl_get_brightness, -}; - -static int adp8870_bl_setup(struct backlight_device *bl) -{ - struct adp8870_bl *data = bl_get_data(bl); - struct i2c_client *client = data->client; - struct adp8870_backlight_platform_data *pdata = data->pdata; - int ret = 0; - - ret = adp8870_write(client, ADP8870_BLSEL, ~pdata->bl_led_assign); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_PWMLED, pdata->pwm_assign); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLMX1, pdata->l1_daylight_max); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLDM1, pdata->l1_daylight_dim); - if (ret) - return ret; - - if (pdata->en_ambl_sens) { - data->cached_daylight_max = pdata->l1_daylight_max; - ret = adp8870_write(client, ADP8870_BLMX2, - pdata->l2_bright_max); - if (ret) - return ret; - ret = adp8870_write(client, ADP8870_BLDM2, - pdata->l2_bright_dim); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLMX3, - pdata->l3_office_max); - if (ret) - return ret; - ret = adp8870_write(client, ADP8870_BLDM3, - pdata->l3_office_dim); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLMX4, - pdata->l4_indoor_max); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLDM4, - pdata->l4_indor_dim); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLMX5, - pdata->l5_dark_max); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLDM5, - pdata->l5_dark_dim); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L2TRP, pdata->l2_trip); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L2HYS, pdata->l2_hyst); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L3TRP, pdata->l3_trip); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L3HYS, pdata->l3_hyst); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L4TRP, pdata->l4_trip); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L4HYS, pdata->l4_hyst); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L5TRP, pdata->l5_trip); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_L5HYS, pdata->l5_hyst); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_ALS1_EN, L5_EN | L4_EN | - L3_EN | L2_EN); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_CMP_CTL, - ALS_CMPR_CFG_VAL(pdata->abml_filt)); - if (ret) - return ret; - } - - ret = adp8870_write(client, ADP8870_CFGR, - BL_CFGR_VAL(pdata->bl_fade_law, 0)); - if (ret) - return ret; - - ret = adp8870_write(client, ADP8870_BLFR, FADE_VAL(pdata->bl_fade_in, - pdata->bl_fade_out)); - if (ret) - return ret; - /* - * ADP8870 Rev0 requires GDWN_DIS bit set - */ - - ret = adp8870_set_bits(client, ADP8870_MDCR, BLEN | DIM_EN | NSTBY | - (data->revid == 0 ? GDWN_DIS : 0)); - - return ret; -} - -static ssize_t adp8870_show(struct device *dev, char *buf, int reg) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - int error; - uint8_t reg_val; - - mutex_lock(&data->lock); - error = adp8870_read(data->client, reg, ®_val); - mutex_unlock(&data->lock); - - if (error < 0) - return error; - - return sprintf(buf, "%u\n", reg_val); -} - -static ssize_t adp8870_store(struct device *dev, const char *buf, - size_t count, int reg) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - unsigned long val; - int ret; - - ret = strict_strtoul(buf, 10, &val); - if (ret) - return ret; - - mutex_lock(&data->lock); - adp8870_write(data->client, reg, val); - mutex_unlock(&data->lock); - - return count; -} - -static ssize_t adp8870_bl_l5_dark_max_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLMX5); -} - -static ssize_t adp8870_bl_l5_dark_max_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLMX5); -} -static DEVICE_ATTR(l5_dark_max, 0664, adp8870_bl_l5_dark_max_show, - adp8870_bl_l5_dark_max_store); - - -static ssize_t adp8870_bl_l4_indoor_max_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLMX4); -} - -static ssize_t adp8870_bl_l4_indoor_max_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLMX4); -} -static DEVICE_ATTR(l4_indoor_max, 0664, adp8870_bl_l4_indoor_max_show, - adp8870_bl_l4_indoor_max_store); - - -static ssize_t adp8870_bl_l3_office_max_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLMX3); -} - -static ssize_t adp8870_bl_l3_office_max_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLMX3); -} - -static DEVICE_ATTR(l3_office_max, 0664, adp8870_bl_l3_office_max_show, - adp8870_bl_l3_office_max_store); - -static ssize_t adp8870_bl_l2_bright_max_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLMX2); -} - -static ssize_t adp8870_bl_l2_bright_max_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLMX2); -} -static DEVICE_ATTR(l2_bright_max, 0664, adp8870_bl_l2_bright_max_show, - adp8870_bl_l2_bright_max_store); - -static ssize_t adp8870_bl_l1_daylight_max_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLMX1); -} - -static ssize_t adp8870_bl_l1_daylight_max_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - int ret = strict_strtoul(buf, 10, &data->cached_daylight_max); - if (ret) - return ret; - - return adp8870_store(dev, buf, count, ADP8870_BLMX1); -} -static DEVICE_ATTR(l1_daylight_max, 0664, adp8870_bl_l1_daylight_max_show, - adp8870_bl_l1_daylight_max_store); - -static ssize_t adp8870_bl_l5_dark_dim_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLDM5); -} - -static ssize_t adp8870_bl_l5_dark_dim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLDM5); -} -static DEVICE_ATTR(l5_dark_dim, 0664, adp8870_bl_l5_dark_dim_show, - adp8870_bl_l5_dark_dim_store); - -static ssize_t adp8870_bl_l4_indoor_dim_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLDM4); -} - -static ssize_t adp8870_bl_l4_indoor_dim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLDM4); -} -static DEVICE_ATTR(l4_indoor_dim, 0664, adp8870_bl_l4_indoor_dim_show, - adp8870_bl_l4_indoor_dim_store); - - -static ssize_t adp8870_bl_l3_office_dim_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLDM3); -} - -static ssize_t adp8870_bl_l3_office_dim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLDM3); -} -static DEVICE_ATTR(l3_office_dim, 0664, adp8870_bl_l3_office_dim_show, - adp8870_bl_l3_office_dim_store); - -static ssize_t adp8870_bl_l2_bright_dim_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLDM2); -} - -static ssize_t adp8870_bl_l2_bright_dim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLDM2); -} -static DEVICE_ATTR(l2_bright_dim, 0664, adp8870_bl_l2_bright_dim_show, - adp8870_bl_l2_bright_dim_store); - -static ssize_t adp8870_bl_l1_daylight_dim_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return adp8870_show(dev, buf, ADP8870_BLDM1); -} - -static ssize_t adp8870_bl_l1_daylight_dim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return adp8870_store(dev, buf, count, ADP8870_BLDM1); -} -static DEVICE_ATTR(l1_daylight_dim, 0664, adp8870_bl_l1_daylight_dim_show, - adp8870_bl_l1_daylight_dim_store); - -#ifdef ADP8870_EXT_FEATURES -static ssize_t adp8870_bl_ambient_light_level_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - int error; - uint8_t reg_val; - uint16_t ret_val; - - mutex_lock(&data->lock); - error = adp8870_read(data->client, ADP8870_PH1LEVL, ®_val); - if (error < 0) { - mutex_unlock(&data->lock); - return error; - } - ret_val = reg_val; - error = adp8870_read(data->client, ADP8870_PH1LEVH, ®_val); - mutex_unlock(&data->lock); - - if (error < 0) - return error; - - /* Return 13-bit conversion value for the first light sensor */ - ret_val += (reg_val & 0x1F) << 8; - - return sprintf(buf, "%u\n", ret_val); -} -static DEVICE_ATTR(ambient_light_level, 0444, - adp8870_bl_ambient_light_level_show, NULL); - -static ssize_t adp8870_bl_ambient_light_zone_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - int error; - uint8_t reg_val; - - mutex_lock(&data->lock); - error = adp8870_read(data->client, ADP8870_CFGR, ®_val); - mutex_unlock(&data->lock); - - if (error < 0) - return error; - - return sprintf(buf, "%u\n", - ((reg_val >> CFGR_BLV_SHIFT) & CFGR_BLV_MASK) + 1); -} - -static ssize_t adp8870_bl_ambient_light_zone_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct adp8870_bl *data = dev_get_drvdata(dev); - unsigned long val; - uint8_t reg_val; - int ret; - - ret = strict_strtoul(buf, 10, &val); - if (ret) - return ret; - - if (val == 0) { - /* Enable automatic ambient light sensing */ - adp8870_set_bits(data->client, ADP8870_MDCR, CMP_AUTOEN); - } else if ((val > 0) && (val < 6)) { - /* Disable automatic ambient light sensing */ - adp8870_clr_bits(data->client, ADP8870_MDCR, CMP_AUTOEN); - - /* Set user supplied ambient light zone */ - mutex_lock(&data->lock); - adp8870_read(data->client, ADP8870_CFGR, ®_val); - reg_val &= ~(CFGR_BLV_MASK << CFGR_BLV_SHIFT); - reg_val |= (val - 1) << CFGR_BLV_SHIFT; - adp8870_write(data->client, ADP8870_CFGR, reg_val); - mutex_unlock(&data->lock); - } - - return count; -} -static DEVICE_ATTR(ambient_light_zone, 0664, - adp8870_bl_ambient_light_zone_show, - adp8870_bl_ambient_light_zone_store); -#endif - -static struct attribute *adp8870_bl_attributes[] = { - &dev_attr_l5_dark_max.attr, - &dev_attr_l5_dark_dim.attr, - &dev_attr_l4_indoor_max.attr, - &dev_attr_l4_indoor_dim.attr, - &dev_attr_l3_office_max.attr, - &dev_attr_l3_office_dim.attr, - &dev_attr_l2_bright_max.attr, - &dev_attr_l2_bright_dim.attr, - &dev_attr_l1_daylight_max.attr, - &dev_attr_l1_daylight_dim.attr, -#ifdef ADP8870_EXT_FEATURES - &dev_attr_ambient_light_level.attr, - &dev_attr_ambient_light_zone.attr, -#endif - NULL -}; - -static const struct attribute_group adp8870_bl_attr_group = { - .attrs = adp8870_bl_attributes, -}; - -static int __devinit adp8870_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct backlight_properties props; - struct backlight_device *bl; - struct adp8870_bl *data; - struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; - uint8_t reg_val; - int ret; - - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_BYTE_DATA)) { - dev_err(&client->dev, "SMBUS Byte Data not Supported\n"); - return -EIO; - } - - if (!pdata) { - dev_err(&client->dev, "no platform data?\n"); - return -EINVAL; - } - - ret = adp8870_read(client, ADP8870_MFDVID, ®_val); - if (ret < 0) - return -EIO; - - if (ADP8870_MANID(reg_val) != ADP8870_MANUFID) { - dev_err(&client->dev, "failed to probe\n"); - return -ENODEV; - } - - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (data == NULL) - return -ENOMEM; - - data->revid = ADP8870_DEVID(reg_val); - data->client = client; - data->pdata = pdata; - data->id = id->driver_data; - data->current_brightness = 0; - i2c_set_clientdata(client, data); - - mutex_init(&data->lock); - - memset(&props, 0, sizeof(props)); - props.type = BACKLIGHT_RAW; - props.max_brightness = props.brightness = ADP8870_MAX_BRIGHTNESS; - bl = backlight_device_register(dev_driver_string(&client->dev), - &client->dev, data, &adp8870_bl_ops, &props); - if (IS_ERR(bl)) { - dev_err(&client->dev, "failed to register backlight\n"); - ret = PTR_ERR(bl); - goto out2; - } - - data->bl = bl; - - if (pdata->en_ambl_sens) - ret = sysfs_create_group(&bl->dev.kobj, - &adp8870_bl_attr_group); - - if (ret) { - dev_err(&client->dev, "failed to register sysfs\n"); - goto out1; - } - - ret = adp8870_bl_setup(bl); - if (ret) { - ret = -EIO; - goto out; - } - - backlight_update_status(bl); - - dev_info(&client->dev, "Rev.%d Backlight\n", data->revid); - - if (pdata->num_leds) - adp8870_led_probe(client); - - return 0; - -out: - if (data->pdata->en_ambl_sens) - sysfs_remove_group(&data->bl->dev.kobj, - &adp8870_bl_attr_group); -out1: - backlight_device_unregister(bl); -out2: - kfree(data); - - return ret; -} - -static int __devexit adp8870_remove(struct i2c_client *client) -{ - struct adp8870_bl *data = i2c_get_clientdata(client); - - adp8870_clr_bits(client, ADP8870_MDCR, NSTBY); - - if (data->led) - adp8870_led_remove(client); - - if (data->pdata->en_ambl_sens) - sysfs_remove_group(&data->bl->dev.kobj, - &adp8870_bl_attr_group); - - backlight_device_unregister(data->bl); - kfree(data); - - return 0; -} - -#ifdef CONFIG_PM -static int adp8870_i2c_suspend(struct i2c_client *client, pm_message_t message) -{ - adp8870_clr_bits(client, ADP8870_MDCR, NSTBY); - - return 0; -} - -static int adp8870_i2c_resume(struct i2c_client *client) -{ - adp8870_set_bits(client, ADP8870_MDCR, NSTBY); - - return 0; -} -#else -#define adp8870_i2c_suspend NULL -#define adp8870_i2c_resume NULL -#endif - -static const struct i2c_device_id adp8870_id[] = { - { "adp8870", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, adp8870_id); - -static struct i2c_driver adp8870_driver = { - .driver = { - .name = KBUILD_MODNAME, - }, - .probe = adp8870_probe, - .remove = __devexit_p(adp8870_remove), - .suspend = adp8870_i2c_suspend, - .resume = adp8870_i2c_resume, - .id_table = adp8870_id, -}; - -module_i2c_driver(adp8870_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); -MODULE_DESCRIPTION("ADP8870 Backlight driver"); -MODULE_ALIAS("i2c:adp8870-backlight"); |