static ssize_t store_linear(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct lm3533_bl *bl = dev_get_drvdata(dev); unsigned long linear; u8 mask; u8 val; int ret; if (kstrtoul(buf, 0, &linear)) return -EINVAL; mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1); if (linear) val = mask; else val = 0; ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val, mask); if (ret) return ret; return len; }
static ssize_t store_als_en(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct lm3533_bl *bl = dev_get_drvdata(dev); int ctrlbank = lm3533_bl_get_ctrlbank_id(bl); int enable; u8 val; u8 mask; int ret; if (kstrtoint(buf, 0, &enable)) return -EINVAL; mask = 1 << (2 * ctrlbank); if (enable) val = mask; else val = 0; ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val, mask); if (ret) return ret; return len; }
static int __devinit lm3533_bl_setup(struct lm3533_bl *bl, struct lm3533_bl_platform_data *pdata) { int ret; u8 mask; u8 val; ret = lm3533_ctrlbank_set_max_current(&bl->cb, pdata->max_current); if (ret) return ret; mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1); if (pdata->linear) val = mask; else val = 0; ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val, mask); if (ret) return ret; return lm3533_ctrlbank_set_pwm(&bl->cb, pdata->pwm); }
static ssize_t show_als_channel(struct device *dev, struct device_attribute *attr, char *buf) { struct lm3533_bl *bl = dev_get_drvdata(dev); unsigned channel = lm3533_bl_get_ctrlbank_id(bl); return scnprintf(buf, PAGE_SIZE, "%u\n", channel); }
static ssize_t show_als_en(struct device *dev, struct device_attribute *attr, char *buf) { struct lm3533_bl *bl = dev_get_drvdata(dev); int ctrlbank = lm3533_bl_get_ctrlbank_id(bl); u8 val; u8 mask; bool enable; int ret; ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val); if (ret) return ret; mask = 1 << (2 * ctrlbank); enable = val & mask; return scnprintf(buf, PAGE_SIZE, "%d\n", enable); }
static ssize_t show_linear(struct device *dev, struct device_attribute *attr, char *buf) { struct lm3533_bl *bl = dev_get_drvdata(dev); u8 val; u8 mask; int linear; int ret; ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val); if (ret) return ret; mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1); if (val & mask) linear = 1; else linear = 0; return scnprintf(buf, PAGE_SIZE, "%x\n", linear); }
static ssize_t show_linear(struct device *dev, struct device_attribute *attr, char *buf) { struct lm3533_bl *bl = dev_get_drvdata(dev); u8 val; u8 mask; int linear; int ret; int i = 0; for(i=0x10; i<0xB3; i++) { ret = lm3533_read(bl->lm3533, i, &val); if(ret) { printk("in %s,can not read [0x%02x]\n",__func__,i); } else { printk("in %s,read [0x%02x]: 0x%02x\n",__func__,i,val); } } ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val); if (ret) return ret; mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1); if (val & mask) linear = 1; else linear = 0; return scnprintf(buf, PAGE_SIZE, "%x\n", linear); }
static int lm3533_bl_probe(struct platform_device *pdev) { struct lm3533 *lm3533; struct lm3533_bl_platform_data *pdata; struct lm3533_bl *bl; struct backlight_device *bd; struct backlight_properties props; int ret; dev_dbg(&pdev->dev, "%s\n", __func__); lm3533 = dev_get_drvdata(pdev->dev.parent); if (!lm3533) return -EINVAL; pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "no platform data\n"); return -EINVAL; } if (pdev->id < 0 || pdev->id >= LM3533_HVCTRLBANK_COUNT) { dev_err(&pdev->dev, "illegal backlight id %d\n", pdev->id); return -EINVAL; } bl = devm_kzalloc(&pdev->dev, sizeof(*bl), GFP_KERNEL); if (!bl) return -ENOMEM; bl->lm3533 = lm3533; bl->id = pdev->id; bl->cb.lm3533 = lm3533; bl->cb.id = lm3533_bl_get_ctrlbank_id(bl); bl->cb.dev = NULL; /* until registered */ memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = LM3533_BL_MAX_BRIGHTNESS; props.brightness = pdata->default_brightness; bd = devm_backlight_device_register(&pdev->dev, pdata->name, pdev->dev.parent, bl, &lm3533_bl_ops, &props); if (IS_ERR(bd)) { dev_err(&pdev->dev, "failed to register backlight device\n"); return PTR_ERR(bd); } bl->bd = bd; bl->cb.dev = &bl->bd->dev; platform_set_drvdata(pdev, bl); ret = sysfs_create_group(&bd->dev.kobj, &lm3533_bl_attribute_group); if (ret < 0) { dev_err(&pdev->dev, "failed to create sysfs attributes\n"); return ret; } backlight_update_status(bd); ret = lm3533_bl_setup(bl, pdata); if (ret) goto err_sysfs_remove; ret = lm3533_ctrlbank_enable(&bl->cb); if (ret) goto err_sysfs_remove; return 0; err_sysfs_remove: sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group); return ret; }