/* * Sanyo LV5207LP LED Driver * * Copyright (C) 2013 Ideas on board SPRL * * Contact: Laurent Pinchart * * 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 #include #include #include #include #include #include #define LV5207LP_CTRL1 0x00 #define LV5207LP_CPSW (1 << 7) #define LV5207LP_SCTEN (1 << 6) #define LV5207LP_C10 (1 << 5) #define LV5207LP_CKSW (1 << 4) #define LV5207LP_RSW (1 << 3) #define LV5207LP_GSW (1 << 2) #define LV5207LP_BSW (1 << 1) #define LV5207LP_CTRL2 0x01 #define LV5207LP_MSW (1 << 7) #define LV5207LP_MLED4 (1 << 6) #define LV5207LP_RED 0x02 #define LV5207LP_GREEN 0x03 #define LV5207LP_BLUE 0x04 #define LV5207LP_MAX_BRIGHTNESS 32 struct lv5207lp { struct i2c_client *client; struct backlight_device *backlight; struct lv5207lp_platform_data *pdata; }; static int lv5207lp_write(struct lv5207lp *lv, u8 reg, u8 data) { return i2c_smbus_write_byte_data(lv->client, reg, data); } static int lv5207lp_backlight_update_status(struct backlight_device *backlight) { struct lv5207lp *lv = bl_get_data(backlight); int brightness = backlight->props.brightness; if (backlight->props.power != FB_BLANK_UNBLANK || backlight->props.fb_blank != FB_BLANK_UNBLANK || backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) brightness = 0; if (brightness) { lv5207lp_write(lv, LV5207LP_CTRL1, LV5207LP_CPSW | LV5207LP_C10 | LV5207LP_CKSW); lv5207lp_write(lv, LV5207LP_CTRL2, LV5207LP_MSW | LV5207LP_MLED4 | (brightness - 1)); } else { lv5207lp_write(lv, LV5207LP_CTRL1, 0); lv5207lp_write(lv, LV5207LP_CTRL2, 0); } return 0; } static int lv5207lp_backlight_check_fb(struct backlight_device *backlight, struct fb_info *info) { struct lv5207lp *lv = bl_get_data(backlight); return lv->pdata->fbdev == NULL || lv->pdata->fbdev == info->dev; } static const struct backlight_ops lv5207lp_backlight_ops = { .options = BL_CORE_SUSPENDRESUME, .update_status = lv5207lp_backlight_update_status, .check_fb = lv5207lp_backlight_check_fb, }; static int lv5207lp_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct lv5207lp_platform_data *pdata = dev_get_platdata(&client->dev); struct backlight_device *backlight; struct backlight_properties props; struct lv5207lp *lv; if (pdata == NULL) { dev_err(&client->dev, "No platform data supplied\n"); return -EINVAL; } if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { dev_warn(&client->dev, "I2C adapter doesn't support I2C_FUNC_SMBUS_BYTE\n"); return -EIO; } lv = devm_kzalloc(&client->dev, sizeof(*lv), GFP_KERNEL); if (!lv) return -ENOMEM; lv->client = client; lv->pdata = pdata; memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = min_t(unsigned int, pdata->max_value, LV5207LP_MAX_BRIGHTNESS); props.brightness = clamp_t(unsigned int, pdata->def_value, 0, props.max_brightness); backlight = devm_backlight_device_register(&client->dev, dev_name(&client->dev), &lv->client->dev, lv, &lv5207lp_backlight_ops, &props); if (IS_ERR(backlight)) { dev_err(&client->dev, "failed to register backlight\n"); return PTR_ERR(backlight); } backlight_update_status(backlight); i2c_set_clientdata(client, backlight); return 0; } static int lv5207lp_remove(struct i2c_client *client) { struct backlight_device *backlight = i2c_get_clientdata(client); backlight->props.brightness = 0; backlight_update_status(backlight); return 0; } static const struct i2c_device_id lv5207lp_ids[] = { { "lv5207lp", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, lv5207lp_ids); static struct i2c_driver lv5207lp_driver = { .driver = { .name = "lv5207lp", }, .probe = lv5207lp_probe, .remove = lv5207lp_remove, .id_table = lv5207lp_ids, }; module_i2c_driver(lv5207lp_driver); MODULE_DESCRIPTION("Sanyo LV5207LP Backlight Driver"); MODULE_AUTHOR("Laurent Pinchart "); MODULE_LICENSE("GPL"); >mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-10 09:47:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-10 09:47:13 -0800
commit045169816b31b10faed984b01c390db1b32ee4c1 (patch)
treeecb1d0c763f3d8cb0af749717b66ac47e6981d33 /fs/xfs/libxfs/xfs_ialloc_btree.c
parentcd6628953e4216b65e7d91ab70ff8e5b65c9fde9 (diff)
parent678b5c6b22fed89a13d5b2267f423069a9b11c80 (diff)
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu: "This fixes the following issues: - Fix pointer size when caam is used with AArch64 boot loader on AArch32 kernel. - Fix ahash state corruption in marvell driver. - Fix buggy algif_aed tag handling. - Prevent mcryptd from being used with incompatible algorithms which can cause crashes" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: algif_aead - fix uninitialized variable warning crypto: mcryptd - Check mcryptd algorithm compatibility crypto: algif_aead - fix AEAD tag memory handling crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash crypto: marvell - Don't copy hash operation twice into the SRAM
Diffstat (limited to 'fs/xfs/libxfs/xfs_ialloc_btree.c')