> -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > owner@xxxxxxxxxxxxxxx] On Behalf Of Bryan Wu > Sent: Tuesday, November 30, 2010 5:38 PM > To: tomi.valkeinen@xxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx; linux-arm- > kernel@xxxxxxxxxxxxxxxxxxx; Gadiyar, Anand; rpurdie@xxxxxxxxx > Subject: [PATCH 1/3] Backlight: driver for Sharp LS037V7DW01 panel on OMAP > machine > > This driver is split from drivers/video/backlight/sharp_ls037v7dw01.c > > Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxxxxx> > --- > drivers/video/backlight/Kconfig | 10 ++ > drivers/video/backlight/Makefile | 1 + > drivers/video/backlight/sharp_ls037v7dw01.c | 144 > +++++++++++++++++++++++++++ > 3 files changed, 155 insertions(+), 0 deletions(-) > create mode 100644 drivers/video/backlight/sharp_ls037v7dw01.c > > diff --git a/drivers/video/backlight/Kconfig > b/drivers/video/backlight/Kconfig > index e54a337..46b2415 100644 > --- a/drivers/video/backlight/Kconfig > +++ b/drivers/video/backlight/Kconfig > @@ -307,6 +307,16 @@ config BACKLIGHT_PCF50633 > If you have a backlight driven by a NXP PCF50633 MFD, say Y here > to > enable its driver. > > +config BACKLIGHT_SHARP_LS037V7DW01 > + tristate "Backlight driver for SHARP LS037V7DW01 Panel" > + depends on PANEL_GENERIC_DPI > + help > + If you are using Sharp LS037V7DW01 LCD panel, say Y here to enable > this driver. > + > + To compile this driver as a module, choose M here: the module will > + be called sharp_ls037v7dw01. > + > + [Mayuresh]: Please do not introduce extra new lines. > endif # BACKLIGHT_CLASS_DEVICE > > endif # BACKLIGHT_LCD_SUPPORT > diff --git a/drivers/video/backlight/Makefile > b/drivers/video/backlight/Makefile > index 44c0f81..c756f49 100644 > --- a/drivers/video/backlight/Makefile > +++ b/drivers/video/backlight/Makefile > @@ -35,4 +35,5 @@ obj-$(CONFIG_BACKLIGHT_ADP5520) += adp5520_bl.o > obj-$(CONFIG_BACKLIGHT_ADP8860) += adp8860_bl.o > obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o > obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o > +obj-$(CONFIG_BACKLIGHT_SHARP_LS037V7DW01) += sharp_ls037v7dw01.o > > diff --git a/drivers/video/backlight/sharp_ls037v7dw01.c > b/drivers/video/backlight/sharp_ls037v7dw01.c > new file mode 100644 > index 0000000..e90595e > --- /dev/null > +++ b/drivers/video/backlight/sharp_ls037v7dw01.c > @@ -0,0 +1,144 @@ > +/* > + * Backlight driver for Sharp LS037V7DW01 > + * > + * Copyright (C) 2010 Canonical Ltd. > + * Author: Bryan Wu <bryan.wu@xxxxxxxxxxxxx> > + * > + * Copyright (C) 2008 Nokia Corporation > + * Author: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxx> > + * > + * 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. > + * > + * 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. > + * > + * You should have received a copy of the GNU General Public License > along with > + * this program. If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#include <linux/module.h> > +#include <linux/device.h> > +#include <linux/backlight.h> > +#include <linux/fb.h> > +#include <linux/err.h> > + > +/* This OMAP platform header file is required by this driver */ > +#include <plat/display.h> > + > +static int sharp_ls_bl_update_status(struct backlight_device *bl) > +{ > + struct omap_dss_device *dssdev = bl_get_data(bl); > + int level; > + > + if (!dssdev->set_backlight) > + return -EINVAL; > + > + if (bl->props.fb_blank == FB_BLANK_UNBLANK && > + bl->props.power == FB_BLANK_UNBLANK) > + level = bl->props.brightness; > + else > + level = 0; > + > + return dssdev->set_backlight(dssdev, level); > +} > + > +static int sharp_ls_bl_get_brightness(struct backlight_device *bl) > +{ > + if (bl->props.fb_blank == FB_BLANK_UNBLANK && > + bl->props.power == FB_BLANK_UNBLANK) > + return bl->props.brightness; > + > + return 0; > +} > + > +static const struct backlight_ops sharp_ls_bl_ops = { > + .get_brightness = sharp_ls_bl_get_brightness, > + .update_status = sharp_ls_bl_update_status, > +}; > + > +static int __devinit sharp_ls_bl_probe(struct platform_device *pdev) > +{ > + struct backlight_properties props; > + struct backlight_device *bl; > + struct omap_dss_device *dssdev = pdev->dev.platform_data; > + > + if (!dssdev) > + return -EINVAL; > + > + memset(&props, 0, sizeof(struct backlight_properties)); > + props.max_brightness = dssdev->max_backlight_level; > + > + bl = backlight_device_register("sharp-ls-bl", &dssdev->dev, dssdev, > + &sharp_ls_bl_ops, &props); > + if (IS_ERR(bl)) > + return PTR_ERR(bl); > + > + bl->props.fb_blank = FB_BLANK_UNBLANK; > + bl->props.power = FB_BLANK_UNBLANK; > + bl->props.brightness = dssdev->max_backlight_level; > + backlight_update_status(bl); > + > + platform_set_drvdata(pdev, bl); > + return 0; > +} > + > +static int __devexit sharp_ls_bl_remove(struct platform_device *pdev) > +{ > + struct backlight_device *bl = platform_get_drvdata(pdev); > + > + bl->props.power = FB_BLANK_POWERDOWN; > + backlight_update_status(bl); > + backlight_device_unregister(bl); > + > + return 0; > +} > + > +#ifdef CONFIG_PM > +static int sharp_ls_bl_suspend(struct platform_device *dev, pm_message_t > state) > +{ > + return 0; > +} > + > +static int sharp_ls_bl_resume(struct platform_device *dev) > +{ > + struct backlight_device *bl = platform_get_drvdata(dev); > + > + backlight_update_status(bl); > + return 0; > +} > +#else > +#define sharp_ls_bl_suspend NULL > +#define sharp_ls_bl_resume NULL > +#endif > + > +static struct platform_driver sharp_ls_bl_driver = { > + .driver = { > + .name = "sharp-ls-bl", > + .owner = THIS_MODULE, > + }, > + .probe = sharp_ls_bl_probe, > + .remove = __devexit_p(sharp_ls_bl_remove), > + .suspend = sharp_ls_bl_suspend, > + .resume = sharp_ls_bl_resume, > +}; > + > +static int __init sharp_ls_bl_init(void) > +{ > + return platform_driver_register(&sharp_ls_bl_driver); > +} > +module_init(sharp_ls_bl_init); > + > +static void __exit sharp_ls_bl_exit(void) > +{ > + platform_driver_unregister(&sharp_ls_bl_driver); > +} > +module_exit(sharp_ls_bl_exit); > + > +MODULE_DESCRIPTION("Sharp LS037V7DW01 Backlight Driver"); > +MODULE_AUTHOR("Bryan Wu <bryan.wu@xxxxxxxxxxxxx>"); > +MODULE_LICENSE("GPL"); > +MODULE_ALIAS("platform:sharp-ls-bl"); > -- > 1.7.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
