/* * Backlight driver for OMAP based boards. * * Copyright (c) 2006 Andrzej Zaborowski * * This package is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This package 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. * * You should have received a copy of the GNU General Public License * along with this package; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #define OMAPBL_MAX_INTENSITY 0xff struct omap_backlight { int powermode; int current_intensity; struct device *dev; struct omap_backlight_config *pdata; }; static inline void omapbl_send_intensity(int intensity) { omap_writeb(intensity, OMAP_PWL_ENABLE); } static inline void omapbl_send_enable(int enable) { omap_writeb(enable, OMAP_PWL_CLK_ENABLE); } static void omapbl_blank(struct omap_backlight *bl, int mode) { if (bl->pdata->set_power) bl->pdata->set_power(bl->dev, mode); switch (mode) { case FB_BLANK_NORMAL: case FB_BLANK_VSYNC_SUSPEND: case FB_BLANK_HSYNC_SUSPEND: case FB_BLANK_POWERDOWN: omapbl_send_intensity(0); omapbl_send_enable(0); break; case FB_BLANK_UNBLANK: omapbl_send_intensity(bl->current_intensity); omapbl_send_enable(1); break; } } #ifdef CONFIG_PM_SLEEP static int omapbl_suspend(struct device *dev) { struct backlight_device *bl_dev = dev_get_drvdata(dev); struct omap_backlight *bl = bl_get_data(bl_dev); omapbl_blank(bl, FB_BLANK_POWERDOWN); return 0; } static int omapbl_resume(struct device *dev) { struct backlight_device *bl_dev = dev_get_drvdata(dev); struct omap_backlight *bl = bl_get_data(bl_dev); omapbl_blank(bl, bl->powermode); return 0; } #endif static int omapbl_set_power(struct backlight_device *dev, int state) { struct omap_backlight *bl = bl_get_data(dev); omapbl_blank(bl, state); bl->powermode = state; return 0; } static int omapbl_update_status(struct backlight_device *dev) { struct omap_backlight *bl = bl_get_data(dev); if (bl->current_intensity != dev->props.brightness) { if (bl->powermode == FB_BLANK_UNBLANK) omapbl_send_intensity(dev->props.brightness); bl->current_intensity = dev->props.brightness; } if (dev->props.fb_blank != bl->powermode) omapbl_set_power(dev, dev->props.fb_blank); return 0; } static int omapbl_get_intensity(struct backlight_device *dev) { struct omap_backlight *bl = bl_get_data(dev); return bl->current_intensity; } static const struct backlight_ops omapbl_ops = { .get_brightness = omapbl_get_intensity, .update_status = omapbl_update_status, }; static int omapbl_probe(struct platform_device *pdev) { struct backlight_properties props; struct backlight_device *dev; struct omap_backlight *bl; struct omap_backlight_config *pdata = dev_get_platdata(&pdev->dev); if (!pdata) return -ENXIO; bl = devm_kzalloc(&pdev->dev, sizeof(struct omap_backlight), GFP_KERNEL); if (unlikely(!bl)) return -ENOMEM; memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = OMAPBL_MAX_INTENSITY; dev = devm_backlight_device_register(&pdev->dev, "omap-bl", &pdev->dev, bl, &omapbl_ops, &props); if (IS_ERR(dev)) return PTR_ERR(dev); bl->powermode = FB_BLANK_POWERDOWN; bl->current_intensity = 0; bl->pdata = pdata; bl->dev = &pdev->dev; platform_set_drvdata(pdev, dev); omap_cfg_reg(PWL); /* Conflicts with UART3 */ dev->props.fb_blank = FB_BLANK_UNBLANK; dev->props.brightness = pdata->default_intensity; omapbl_update_status(dev); dev_info(&pdev->dev, "OMAP LCD backlight initialised\n"); return 0; } static SIMPLE_DEV_PM_OPS(omapbl_pm_ops, omapbl_suspend, omapbl_resume); static struct platform_driver omapbl_driver = { .probe = omapbl_probe, .driver = { .name = "omap-bl", .pm = &omapbl_pm_ops, }, }; module_platform_driver(omapbl_driver); MODULE_AUTHOR("Andrzej Zaborowski "); MODULE_DESCRIPTION("OMAP LCD Backlight driver"); MODULE_LICENSE("GPL"); d class='right'>2016-11-12 15:22:38 +0100 committerMark Brown <broonie@kernel.org>2016-11-13 09:22:37 +0000 commit295070e9aa015abb9b92cccfbb1e43954e938133 (patch) treed0a08e7ce280bc877e22424437dbe59fa1857d9a /net/ieee802154/nl802154.h parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: stw481x-vmmc: fix ages old enable error
The regulator has never been properly enabled, it has been dormant all the time. It's strange that MMC was working at all, but it likely worked by the signals going through the levelshifter and reaching the card anyways. Fixes: 3615a34ea1a6 ("regulator: add STw481x VMMC driver") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'net/ieee802154/nl802154.h')