Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight: backlight: new driver for ADP5520/ADP5501 MFD PMICs backlight: extend event support to also support poll() backlight/eeepc-laptop: Update the backlight state when we change brightness backlight/acpi: Update the backlight state when we change brightness backlight: Allow drivers to update the core, and generate events on changes backlight: switch to da903x driver to dev_pm_ops backlight: Add support for the Avionic Design Xanthos backlight device. backlight: spi driver for LMS283GF05 LCD backlight: move hp680-bl's probe function to .devinit.text backlight: Add support for new Apple machines. backlight: mbp_nvidia_bl: add support for MacBookAir 1,1 backlight: Add WM831x backlight driver Trivial conflicts due to '#ifdef CONFIG_PM' differences in drivers/video/backlight/da903x_bl.c
This commit is contained in:
Linus Torvalds
commit
d910fc7860
13 changed files with 1203 additions and 2 deletions
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@ -1986,6 +1986,10 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event)
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result = acpi_video_device_lcd_set_level(device, level_next);
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if (!result)
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backlight_force_update(device->backlight,
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BACKLIGHT_UPDATE_HOTKEY);
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out:
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if (result)
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printk(KERN_ERR PREFIX "Failed to switch the brightness\n");
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@ -624,7 +624,7 @@ static int notify_brn(void)
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struct backlight_device *bd = eeepc_backlight_device;
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if (bd) {
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int old = bd->props.brightness;
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bd->props.brightness = read_brightness(bd);
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backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
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return old;
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}
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return -1;
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@ -31,6 +31,13 @@ config LCD_CORGI
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Say y here to support the LCD panels usually found on SHARP
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corgi (C7x0) and spitz (Cxx00) models.
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config LCD_LMS283GF05
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tristate "Samsung LMS283GF05 LCD"
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depends on LCD_CLASS_DEVICE && SPI_MASTER && GENERIC_GPIO
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help
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SPI driver for Samsung LMS283GF05. This provides basic support
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for powering the LCD up/down through a sysfs interface.
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config LCD_LTV350QV
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tristate "Samsung LTV350QV LCD Panel"
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depends on LCD_CLASS_DEVICE && SPI_MASTER
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@ -229,3 +236,29 @@ config BACKLIGHT_SAHARA
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help
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If you have a Tabletkiosk Sahara Touch-iT, say y to enable the
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backlight driver.
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config BACKLIGHT_WM831X
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tristate "WM831x PMIC Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && MFD_WM831X
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help
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If you have a backlight driven by the ISINK and DCDC of a
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WM831x PMIC say y to enable the backlight driver for it.
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config BACKLIGHT_ADX
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tristate "Avionic Design Xanthos Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && ARCH_PXA_ADX
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default y
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help
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Say Y to enable the backlight driver on Avionic Design Xanthos-based
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boards.
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config BACKLIGHT_ADP5520
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tristate "Backlight Driver for ADP5520/ADP5501 using WLED"
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depends on BACKLIGHT_CLASS_DEVICE && PMIC_ADP5520
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help
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If you have a LCD backlight connected to the BST/BL_SNK output of
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ADP5520 or ADP5501, say Y here to enable this driver.
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To compile this driver as a module, choose M here: the module will
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be called adp5520_bl.
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@ -3,6 +3,7 @@
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obj-$(CONFIG_LCD_CLASS_DEVICE) += lcd.o
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obj-$(CONFIG_LCD_CORGI) += corgi_lcd.o
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obj-$(CONFIG_LCD_HP700) += jornada720_lcd.o
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obj-$(CONFIG_LCD_LMS283GF05) += lms283gf05.o
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obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o
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obj-$(CONFIG_LCD_ILI9320) += ili9320.o
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obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o
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@ -24,4 +25,7 @@ obj-$(CONFIG_BACKLIGHT_DA903X) += da903x_bl.o
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obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o
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obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o
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obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
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obj-$(CONFIG_BACKLIGHT_WM831X) += wm831x_bl.o
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obj-$(CONFIG_BACKLIGHT_ADX) += adx_bl.o
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obj-$(CONFIG_BACKLIGHT_ADP5520) += adp5520_bl.o
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377
drivers/video/backlight/adp5520_bl.c
Normal file
377
drivers/video/backlight/adp5520_bl.c
Normal file
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@ -0,0 +1,377 @@
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/*
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* Backlight driver for Analog Devices ADP5520/ADP5501 MFD PMICs
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*
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* Copyright 2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/fb.h>
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#include <linux/backlight.h>
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#include <linux/mfd/adp5520.h>
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struct adp5520_bl {
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struct device *master;
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struct adp5520_backlight_platfrom_data *pdata;
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struct mutex lock;
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unsigned long cached_daylight_max;
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int id;
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int current_brightness;
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};
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static int adp5520_bl_set(struct backlight_device *bl, int brightness)
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{
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struct adp5520_bl *data = bl_get_data(bl);
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struct device *master = data->master;
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int ret = 0;
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if (data->pdata->en_ambl_sens) {
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if ((brightness > 0) && (brightness < ADP5020_MAX_BRIGHTNESS)) {
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/* Disable Ambient Light auto adjust */
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ret |= adp5520_clr_bits(master, BL_CONTROL,
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BL_AUTO_ADJ);
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ret |= adp5520_write(master, DAYLIGHT_MAX, brightness);
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} else {
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/*
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* MAX_BRIGHTNESS -> Enable Ambient Light auto adjust
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* restore daylight l3 sysfs brightness
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*/
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ret |= adp5520_write(master, DAYLIGHT_MAX,
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data->cached_daylight_max);
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ret |= adp5520_set_bits(master, BL_CONTROL,
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BL_AUTO_ADJ);
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}
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} else {
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ret |= adp5520_write(master, DAYLIGHT_MAX, brightness);
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}
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if (data->current_brightness && brightness == 0)
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ret |= adp5520_set_bits(master,
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MODE_STATUS, DIM_EN);
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else if (data->current_brightness == 0 && brightness)
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ret |= adp5520_clr_bits(master,
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MODE_STATUS, DIM_EN);
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if (!ret)
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data->current_brightness = brightness;
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return ret;
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}
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static int adp5520_bl_update_status(struct backlight_device *bl)
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{
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int brightness = bl->props.brightness;
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if (bl->props.power != FB_BLANK_UNBLANK)
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brightness = 0;
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if (bl->props.fb_blank != FB_BLANK_UNBLANK)
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brightness = 0;
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return adp5520_bl_set(bl, brightness);
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}
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static int adp5520_bl_get_brightness(struct backlight_device *bl)
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{
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struct adp5520_bl *data = bl_get_data(bl);
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int error;
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uint8_t reg_val;
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error = adp5520_read(data->master, BL_VALUE, ®_val);
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return error ? data->current_brightness : reg_val;
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}
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static struct backlight_ops adp5520_bl_ops = {
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.update_status = adp5520_bl_update_status,
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.get_brightness = adp5520_bl_get_brightness,
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};
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static int adp5520_bl_setup(struct backlight_device *bl)
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{
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struct adp5520_bl *data = bl_get_data(bl);
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struct device *master = data->master;
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struct adp5520_backlight_platfrom_data *pdata = data->pdata;
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int ret = 0;
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ret |= adp5520_write(master, DAYLIGHT_MAX, pdata->l1_daylight_max);
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ret |= adp5520_write(master, DAYLIGHT_DIM, pdata->l1_daylight_dim);
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if (pdata->en_ambl_sens) {
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data->cached_daylight_max = pdata->l1_daylight_max;
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ret |= adp5520_write(master, OFFICE_MAX, pdata->l2_office_max);
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ret |= adp5520_write(master, OFFICE_DIM, pdata->l2_office_dim);
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ret |= adp5520_write(master, DARK_MAX, pdata->l3_dark_max);
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ret |= adp5520_write(master, DARK_DIM, pdata->l3_dark_dim);
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ret |= adp5520_write(master, L2_TRIP, pdata->l2_trip);
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ret |= adp5520_write(master, L2_HYS, pdata->l2_hyst);
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ret |= adp5520_write(master, L3_TRIP, pdata->l3_trip);
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ret |= adp5520_write(master, L3_HYS, pdata->l3_hyst);
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ret |= adp5520_write(master, ALS_CMPR_CFG,
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ALS_CMPR_CFG_VAL(pdata->abml_filt, L3_EN));
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}
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ret |= adp5520_write(master, BL_CONTROL,
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BL_CTRL_VAL(pdata->fade_led_law, pdata->en_ambl_sens));
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ret |= adp5520_write(master, BL_FADE, FADE_VAL(pdata->fade_in,
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pdata->fade_out));
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ret |= adp5520_set_bits(master, MODE_STATUS, BL_EN | DIM_EN);
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return ret;
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}
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static ssize_t adp5520_show(struct device *dev, char *buf, int reg)
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{
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struct adp5520_bl *data = dev_get_drvdata(dev);
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int error;
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uint8_t reg_val;
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mutex_lock(&data->lock);
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error = adp5520_read(data->master, reg, ®_val);
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mutex_unlock(&data->lock);
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return sprintf(buf, "%u\n", reg_val);
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}
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static ssize_t adp5520_store(struct device *dev, const char *buf,
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size_t count, int reg)
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{
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struct adp5520_bl *data = dev_get_drvdata(dev);
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unsigned long val;
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int ret;
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ret = strict_strtoul(buf, 10, &val);
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if (ret)
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return ret;
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mutex_lock(&data->lock);
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adp5520_write(data->master, reg, val);
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mutex_unlock(&data->lock);
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return count;
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}
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static ssize_t adp5520_bl_dark_max_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, DARK_MAX);
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}
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static ssize_t adp5520_bl_dark_max_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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return adp5520_store(dev, buf, count, DARK_MAX);
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}
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static DEVICE_ATTR(dark_max, 0664, adp5520_bl_dark_max_show,
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adp5520_bl_dark_max_store);
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static ssize_t adp5520_bl_office_max_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, OFFICE_MAX);
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}
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static ssize_t adp5520_bl_office_max_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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return adp5520_store(dev, buf, count, OFFICE_MAX);
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}
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static DEVICE_ATTR(office_max, 0664, adp5520_bl_office_max_show,
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adp5520_bl_office_max_store);
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static ssize_t adp5520_bl_daylight_max_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, DAYLIGHT_MAX);
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}
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static ssize_t adp5520_bl_daylight_max_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct adp5520_bl *data = dev_get_drvdata(dev);
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strict_strtoul(buf, 10, &data->cached_daylight_max);
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return adp5520_store(dev, buf, count, DAYLIGHT_MAX);
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}
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static DEVICE_ATTR(daylight_max, 0664, adp5520_bl_daylight_max_show,
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adp5520_bl_daylight_max_store);
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static ssize_t adp5520_bl_dark_dim_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, DARK_DIM);
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}
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static ssize_t adp5520_bl_dark_dim_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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return adp5520_store(dev, buf, count, DARK_DIM);
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}
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static DEVICE_ATTR(dark_dim, 0664, adp5520_bl_dark_dim_show,
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adp5520_bl_dark_dim_store);
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static ssize_t adp5520_bl_office_dim_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, OFFICE_DIM);
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}
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static ssize_t adp5520_bl_office_dim_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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return adp5520_store(dev, buf, count, OFFICE_DIM);
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}
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static DEVICE_ATTR(office_dim, 0664, adp5520_bl_office_dim_show,
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adp5520_bl_office_dim_store);
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static ssize_t adp5520_bl_daylight_dim_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return adp5520_show(dev, buf, DAYLIGHT_DIM);
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}
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static ssize_t adp5520_bl_daylight_dim_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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return adp5520_store(dev, buf, count, DAYLIGHT_DIM);
|
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}
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static DEVICE_ATTR(daylight_dim, 0664, adp5520_bl_daylight_dim_show,
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adp5520_bl_daylight_dim_store);
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static struct attribute *adp5520_bl_attributes[] = {
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&dev_attr_dark_max.attr,
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&dev_attr_dark_dim.attr,
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&dev_attr_office_max.attr,
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&dev_attr_office_dim.attr,
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&dev_attr_daylight_max.attr,
|
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&dev_attr_daylight_dim.attr,
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NULL
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};
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static const struct attribute_group adp5520_bl_attr_group = {
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.attrs = adp5520_bl_attributes,
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};
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static int __devinit adp5520_bl_probe(struct platform_device *pdev)
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{
|
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struct backlight_device *bl;
|
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struct adp5520_bl *data;
|
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int ret = 0;
|
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|
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data == NULL)
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return -ENOMEM;
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data->master = pdev->dev.parent;
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data->pdata = pdev->dev.platform_data;
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|
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if (data->pdata == NULL) {
|
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dev_err(&pdev->dev, "missing platform data\n");
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kfree(data);
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return -ENODEV;
|
||||
}
|
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|
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data->id = pdev->id;
|
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data->current_brightness = 0;
|
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|
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mutex_init(&data->lock);
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bl = backlight_device_register(pdev->name, data->master,
|
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data, &adp5520_bl_ops);
|
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if (IS_ERR(bl)) {
|
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dev_err(&pdev->dev, "failed to register backlight\n");
|
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kfree(data);
|
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return PTR_ERR(bl);
|
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}
|
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|
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bl->props.max_brightness =
|
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bl->props.brightness = ADP5020_MAX_BRIGHTNESS;
|
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|
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if (data->pdata->en_ambl_sens)
|
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ret = sysfs_create_group(&bl->dev.kobj,
|
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&adp5520_bl_attr_group);
|
||||
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to register sysfs\n");
|
||||
backlight_device_unregister(bl);
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kfree(data);
|
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}
|
||||
|
||||
platform_set_drvdata(pdev, bl);
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ret |= adp5520_bl_setup(bl);
|
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backlight_update_status(bl);
|
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|
||||
return ret;
|
||||
}
|
||||
|
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static int __devexit adp5520_bl_remove(struct platform_device *pdev)
|
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{
|
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struct backlight_device *bl = platform_get_drvdata(pdev);
|
||||
struct adp5520_bl *data = bl_get_data(bl);
|
||||
|
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adp5520_clr_bits(data->master, MODE_STATUS, BL_EN);
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|
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if (data->pdata->en_ambl_sens)
|
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sysfs_remove_group(&bl->dev.kobj,
|
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&adp5520_bl_attr_group);
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backlight_device_unregister(bl);
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kfree(data);
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||||
|
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return 0;
|
||||
}
|
||||
|
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#ifdef CONFIG_PM
|
||||
static int adp5520_bl_suspend(struct platform_device *pdev,
|
||||
pm_message_t state)
|
||||
{
|
||||
struct backlight_device *bl = platform_get_drvdata(pdev);
|
||||
return adp5520_bl_set(bl, 0);
|
||||
}
|
||||
|
||||
static int adp5520_bl_resume(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bl = platform_get_drvdata(pdev);
|
||||
|
||||
backlight_update_status(bl);
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define adp5520_bl_suspend NULL
|
||||
#define adp5520_bl_resume NULL
|
||||
#endif
|
||||
|
||||
static struct platform_driver adp5520_bl_driver = {
|
||||
.driver = {
|
||||
.name = "adp5520-backlight",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = adp5520_bl_probe,
|
||||
.remove = __devexit_p(adp5520_bl_remove),
|
||||
.suspend = adp5520_bl_suspend,
|
||||
.resume = adp5520_bl_resume,
|
||||
};
|
||||
|
||||
static int __init adp5520_bl_init(void)
|
||||
{
|
||||
return platform_driver_register(&adp5520_bl_driver);
|
||||
}
|
||||
module_init(adp5520_bl_init);
|
||||
|
||||
static void __exit adp5520_bl_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&adp5520_bl_driver);
|
||||
}
|
||||
module_exit(adp5520_bl_exit);
|
||||
|
||||
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
|
||||
MODULE_DESCRIPTION("ADP5520(01) Backlight Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:adp5520-backlight");
|
||||
178
drivers/video/backlight/adx_bl.c
Normal file
178
drivers/video/backlight/adx_bl.c
Normal file
|
|
@ -0,0 +1,178 @@
|
|||
/*
|
||||
* linux/drivers/video/backlight/adx.c
|
||||
*
|
||||
* Copyright (C) 2009 Avionic Design GmbH
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* Written by Thierry Reding <thierry.reding@avionic-design.de>
|
||||
*/
|
||||
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
/* register definitions */
|
||||
#define ADX_BACKLIGHT_CONTROL 0x00
|
||||
#define ADX_BACKLIGHT_CONTROL_ENABLE (1 << 0)
|
||||
#define ADX_BACKLIGHT_BRIGHTNESS 0x08
|
||||
#define ADX_BACKLIGHT_STATUS 0x10
|
||||
#define ADX_BACKLIGHT_ERROR 0x18
|
||||
|
||||
struct adxbl {
|
||||
void __iomem *base;
|
||||
};
|
||||
|
||||
static int adx_backlight_update_status(struct backlight_device *bldev)
|
||||
{
|
||||
struct adxbl *bl = bl_get_data(bldev);
|
||||
u32 value;
|
||||
|
||||
value = bldev->props.brightness;
|
||||
writel(value, bl->base + ADX_BACKLIGHT_BRIGHTNESS);
|
||||
|
||||
value = readl(bl->base + ADX_BACKLIGHT_CONTROL);
|
||||
|
||||
if (bldev->props.state & BL_CORE_FBBLANK)
|
||||
value &= ~ADX_BACKLIGHT_CONTROL_ENABLE;
|
||||
else
|
||||
value |= ADX_BACKLIGHT_CONTROL_ENABLE;
|
||||
|
||||
writel(value, bl->base + ADX_BACKLIGHT_CONTROL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int adx_backlight_get_brightness(struct backlight_device *bldev)
|
||||
{
|
||||
struct adxbl *bl = bl_get_data(bldev);
|
||||
u32 brightness;
|
||||
|
||||
brightness = readl(bl->base + ADX_BACKLIGHT_BRIGHTNESS);
|
||||
return brightness & 0xff;
|
||||
}
|
||||
|
||||
static int adx_backlight_check_fb(struct fb_info *fb)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct backlight_ops adx_backlight_ops = {
|
||||
.options = 0,
|
||||
.update_status = adx_backlight_update_status,
|
||||
.get_brightness = adx_backlight_get_brightness,
|
||||
.check_fb = adx_backlight_check_fb,
|
||||
};
|
||||
|
||||
static int __devinit adx_backlight_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bldev;
|
||||
struct resource *res;
|
||||
struct adxbl *bl;
|
||||
int ret = 0;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
ret = -ENXIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
res = devm_request_mem_region(&pdev->dev, res->start,
|
||||
resource_size(res), res->name);
|
||||
if (!res) {
|
||||
ret = -ENXIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
bl = devm_kzalloc(&pdev->dev, sizeof(*bl), GFP_KERNEL);
|
||||
if (!bl) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
bl->base = devm_ioremap_nocache(&pdev->dev, res->start,
|
||||
resource_size(res));
|
||||
if (!bl->base) {
|
||||
ret = -ENXIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, bl,
|
||||
&adx_backlight_ops);
|
||||
if (!bldev) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
bldev->props.max_brightness = 0xff;
|
||||
bldev->props.brightness = 0xff;
|
||||
bldev->props.power = FB_BLANK_UNBLANK;
|
||||
|
||||
platform_set_drvdata(pdev, bldev);
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit adx_backlight_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bldev;
|
||||
int ret = 0;
|
||||
|
||||
bldev = platform_get_drvdata(pdev);
|
||||
bldev->props.power = FB_BLANK_UNBLANK;
|
||||
bldev->props.brightness = 0xff;
|
||||
backlight_update_status(bldev);
|
||||
backlight_device_unregister(bldev);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int adx_backlight_suspend(struct platform_device *pdev,
|
||||
pm_message_t state)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int adx_backlight_resume(struct platform_device *pdev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define adx_backlight_suspend NULL
|
||||
#define adx_backlight_resume NULL
|
||||
#endif
|
||||
|
||||
static struct platform_driver adx_backlight_driver = {
|
||||
.probe = adx_backlight_probe,
|
||||
.remove = __devexit_p(adx_backlight_remove),
|
||||
.suspend = adx_backlight_suspend,
|
||||
.resume = adx_backlight_resume,
|
||||
.driver = {
|
||||
.name = "adx-backlight",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init adx_backlight_init(void)
|
||||
{
|
||||
return platform_driver_register(&adx_backlight_driver);
|
||||
}
|
||||
|
||||
static void __exit adx_backlight_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&adx_backlight_driver);
|
||||
}
|
||||
|
||||
module_init(adx_backlight_init);
|
||||
module_exit(adx_backlight_exit);
|
||||
|
||||
MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
|
||||
MODULE_DESCRIPTION("Avionic Design Xanthos Backlight Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -73,6 +73,27 @@ static inline void backlight_unregister_fb(struct backlight_device *bd)
|
|||
}
|
||||
#endif /* CONFIG_FB */
|
||||
|
||||
static void backlight_generate_event(struct backlight_device *bd,
|
||||
enum backlight_update_reason reason)
|
||||
{
|
||||
char *envp[2];
|
||||
|
||||
switch (reason) {
|
||||
case BACKLIGHT_UPDATE_SYSFS:
|
||||
envp[0] = "SOURCE=sysfs";
|
||||
break;
|
||||
case BACKLIGHT_UPDATE_HOTKEY:
|
||||
envp[0] = "SOURCE=hotkey";
|
||||
break;
|
||||
default:
|
||||
envp[0] = "SOURCE=unknown";
|
||||
break;
|
||||
}
|
||||
envp[1] = NULL;
|
||||
kobject_uevent_env(&bd->dev.kobj, KOBJ_CHANGE, envp);
|
||||
sysfs_notify(&bd->dev.kobj, NULL, "actual_brightness");
|
||||
}
|
||||
|
||||
static ssize_t backlight_show_power(struct device *dev,
|
||||
struct device_attribute *attr,char *buf)
|
||||
{
|
||||
|
|
@ -142,6 +163,8 @@ static ssize_t backlight_store_brightness(struct device *dev,
|
|||
}
|
||||
mutex_unlock(&bd->ops_lock);
|
||||
|
||||
backlight_generate_event(bd, BACKLIGHT_UPDATE_SYSFS);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -213,6 +236,25 @@ static struct device_attribute bl_device_attributes[] = {
|
|||
__ATTR_NULL,
|
||||
};
|
||||
|
||||
/**
|
||||
* backlight_force_update - tell the backlight subsystem that hardware state
|
||||
* has changed
|
||||
* @bd: the backlight device to update
|
||||
*
|
||||
* Updates the internal state of the backlight in response to a hardware event,
|
||||
* and generate a uevent to notify userspace
|
||||
*/
|
||||
void backlight_force_update(struct backlight_device *bd,
|
||||
enum backlight_update_reason reason)
|
||||
{
|
||||
mutex_lock(&bd->ops_lock);
|
||||
if (bd->ops && bd->ops->get_brightness)
|
||||
bd->props.brightness = bd->ops->get_brightness(bd);
|
||||
mutex_unlock(&bd->ops_lock);
|
||||
backlight_generate_event(bd, reason);
|
||||
}
|
||||
EXPORT_SYMBOL(backlight_force_update);
|
||||
|
||||
/**
|
||||
* backlight_device_register - create and register a new object of
|
||||
* backlight_device class.
|
||||
|
|
|
|||
|
|
@ -103,7 +103,7 @@ static struct backlight_ops hp680bl_ops = {
|
|||
.update_status = hp680bl_set_intensity,
|
||||
};
|
||||
|
||||
static int __init hp680bl_probe(struct platform_device *pdev)
|
||||
static int __devinit hp680bl_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bd;
|
||||
|
||||
|
|
|
|||
242
drivers/video/backlight/lms283gf05.c
Normal file
242
drivers/video/backlight/lms283gf05.c
Normal file
|
|
@ -0,0 +1,242 @@
|
|||
/*
|
||||
* lms283gf05.c -- support for Samsung LMS283GF05 LCD
|
||||
*
|
||||
* Copyright (c) 2009 Marek Vasut <marek.vasut@gmail.com>
|
||||
*
|
||||
* 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 <linux/device.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/lcd.h>
|
||||
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/spi/lms283gf05.h>
|
||||
|
||||
struct lms283gf05_state {
|
||||
struct spi_device *spi;
|
||||
struct lcd_device *ld;
|
||||
};
|
||||
|
||||
struct lms283gf05_seq {
|
||||
unsigned char reg;
|
||||
unsigned short value;
|
||||
unsigned char delay;
|
||||
};
|
||||
|
||||
/* Magic sequences supplied by manufacturer, for details refer to datasheet */
|
||||
static struct lms283gf05_seq disp_initseq[] = {
|
||||
/* REG, VALUE, DELAY */
|
||||
{ 0x07, 0x0000, 0 },
|
||||
{ 0x13, 0x0000, 10 },
|
||||
|
||||
{ 0x11, 0x3004, 0 },
|
||||
{ 0x14, 0x200F, 0 },
|
||||
{ 0x10, 0x1a20, 0 },
|
||||
{ 0x13, 0x0040, 50 },
|
||||
|
||||
{ 0x13, 0x0060, 0 },
|
||||
{ 0x13, 0x0070, 200 },
|
||||
|
||||
{ 0x01, 0x0127, 0 },
|
||||
{ 0x02, 0x0700, 0 },
|
||||
{ 0x03, 0x1030, 0 },
|
||||
{ 0x08, 0x0208, 0 },
|
||||
{ 0x0B, 0x0620, 0 },
|
||||
{ 0x0C, 0x0110, 0 },
|
||||
{ 0x30, 0x0120, 0 },
|
||||
{ 0x31, 0x0127, 0 },
|
||||
{ 0x32, 0x0000, 0 },
|
||||
{ 0x33, 0x0503, 0 },
|
||||
{ 0x34, 0x0727, 0 },
|
||||
{ 0x35, 0x0124, 0 },
|
||||
{ 0x36, 0x0706, 0 },
|
||||
{ 0x37, 0x0701, 0 },
|
||||
{ 0x38, 0x0F00, 0 },
|
||||
{ 0x39, 0x0F00, 0 },
|
||||
{ 0x40, 0x0000, 0 },
|
||||
{ 0x41, 0x0000, 0 },
|
||||
{ 0x42, 0x013f, 0 },
|
||||
{ 0x43, 0x0000, 0 },
|
||||
{ 0x44, 0x013f, 0 },
|
||||
{ 0x45, 0x0000, 0 },
|
||||
{ 0x46, 0xef00, 0 },
|
||||
{ 0x47, 0x013f, 0 },
|
||||
{ 0x48, 0x0000, 0 },
|
||||
{ 0x07, 0x0015, 30 },
|
||||
|
||||
{ 0x07, 0x0017, 0 },
|
||||
|
||||
{ 0x20, 0x0000, 0 },
|
||||
{ 0x21, 0x0000, 0 },
|
||||
{ 0x22, 0x0000, 0 }
|
||||
};
|
||||
|
||||
static struct lms283gf05_seq disp_pdwnseq[] = {
|
||||
{ 0x07, 0x0016, 30 },
|
||||
|
||||
{ 0x07, 0x0004, 0 },
|
||||
{ 0x10, 0x0220, 20 },
|
||||
|
||||
{ 0x13, 0x0060, 50 },
|
||||
|
||||
{ 0x13, 0x0040, 50 },
|
||||
|
||||
{ 0x13, 0x0000, 0 },
|
||||
{ 0x10, 0x0000, 0 }
|
||||
};
|
||||
|
||||
|
||||
static void lms283gf05_reset(unsigned long gpio, bool inverted)
|
||||
{
|
||||
gpio_set_value(gpio, !inverted);
|
||||
mdelay(100);
|
||||
gpio_set_value(gpio, inverted);
|
||||
mdelay(20);
|
||||
gpio_set_value(gpio, !inverted);
|
||||
mdelay(20);
|
||||
}
|
||||
|
||||
static void lms283gf05_toggle(struct spi_device *spi,
|
||||
struct lms283gf05_seq *seq, int sz)
|
||||
{
|
||||
char buf[3];
|
||||
int i;
|
||||
|
||||
for (i = 0; i < sz; i++) {
|
||||
buf[0] = 0x74;
|
||||
buf[1] = 0x00;
|
||||
buf[2] = seq[i].reg;
|
||||
spi_write(spi, buf, 3);
|
||||
|
||||
buf[0] = 0x76;
|
||||
buf[1] = seq[i].value >> 8;
|
||||
buf[2] = seq[i].value & 0xff;
|
||||
spi_write(spi, buf, 3);
|
||||
|
||||
mdelay(seq[i].delay);
|
||||
}
|
||||
}
|
||||
|
||||
static int lms283gf05_power_set(struct lcd_device *ld, int power)
|
||||
{
|
||||
struct lms283gf05_state *st = lcd_get_data(ld);
|
||||
struct spi_device *spi = st->spi;
|
||||
struct lms283gf05_pdata *pdata = spi->dev.platform_data;
|
||||
|
||||
if (power) {
|
||||
if (pdata)
|
||||
lms283gf05_reset(pdata->reset_gpio,
|
||||
pdata->reset_inverted);
|
||||
lms283gf05_toggle(spi, disp_initseq, ARRAY_SIZE(disp_initseq));
|
||||
} else {
|
||||
lms283gf05_toggle(spi, disp_pdwnseq, ARRAY_SIZE(disp_pdwnseq));
|
||||
if (pdata)
|
||||
gpio_set_value(pdata->reset_gpio,
|
||||
pdata->reset_inverted);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct lcd_ops lms_ops = {
|
||||
.set_power = lms283gf05_power_set,
|
||||
.get_power = NULL,
|
||||
};
|
||||
|
||||
static int __devinit lms283gf05_probe(struct spi_device *spi)
|
||||
{
|
||||
struct lms283gf05_state *st;
|
||||
struct lms283gf05_pdata *pdata = spi->dev.platform_data;
|
||||
struct lcd_device *ld;
|
||||
int ret = 0;
|
||||
|
||||
if (pdata != NULL) {
|
||||
ret = gpio_request(pdata->reset_gpio, "LMS285GF05 RESET");
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = gpio_direction_output(pdata->reset_gpio,
|
||||
!pdata->reset_inverted);
|
||||
if (ret)
|
||||
goto err;
|
||||
}
|
||||
|
||||
st = kzalloc(sizeof(struct lms283gf05_state), GFP_KERNEL);
|
||||
if (st == NULL) {
|
||||
dev_err(&spi->dev, "No memory for device state\n");
|
||||
ret = -ENOMEM;
|
||||
goto err;
|
||||
}
|
||||
|
||||
ld = lcd_device_register("lms283gf05", &spi->dev, st, &lms_ops);
|
||||
if (IS_ERR(ld)) {
|
||||
ret = PTR_ERR(ld);
|
||||
goto err2;
|
||||
}
|
||||
|
||||
st->spi = spi;
|
||||
st->ld = ld;
|
||||
|
||||
dev_set_drvdata(&spi->dev, st);
|
||||
|
||||
/* kick in the LCD */
|
||||
if (pdata)
|
||||
lms283gf05_reset(pdata->reset_gpio, pdata->reset_inverted);
|
||||
lms283gf05_toggle(spi, disp_initseq, ARRAY_SIZE(disp_initseq));
|
||||
|
||||
return 0;
|
||||
|
||||
err2:
|
||||
kfree(st);
|
||||
err:
|
||||
if (pdata != NULL)
|
||||
gpio_free(pdata->reset_gpio);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit lms283gf05_remove(struct spi_device *spi)
|
||||
{
|
||||
struct lms283gf05_state *st = dev_get_drvdata(&spi->dev);
|
||||
struct lms283gf05_pdata *pdata = st->spi->dev.platform_data;
|
||||
|
||||
lcd_device_unregister(st->ld);
|
||||
|
||||
if (pdata != NULL)
|
||||
gpio_free(pdata->reset_gpio);
|
||||
|
||||
kfree(st);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct spi_driver lms283gf05_driver = {
|
||||
.driver = {
|
||||
.name = "lms283gf05",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = lms283gf05_probe,
|
||||
.remove = __devexit_p(lms283gf05_remove),
|
||||
};
|
||||
|
||||
static __init int lms283gf05_init(void)
|
||||
{
|
||||
return spi_register_driver(&lms283gf05_driver);
|
||||
}
|
||||
|
||||
static __exit void lms283gf05_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&lms283gf05_driver);
|
||||
}
|
||||
|
||||
module_init(lms283gf05_init);
|
||||
module_exit(lms283gf05_exit);
|
||||
|
||||
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
|
||||
MODULE_DESCRIPTION("LCD283GF05 LCD");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -164,6 +164,15 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
|
|||
},
|
||||
.driver_data = (void *)&intel_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBookAir 1,1",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir1,1"),
|
||||
},
|
||||
.driver_data = (void *)&intel_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBook 5,1",
|
||||
|
|
@ -173,6 +182,15 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
|
|||
},
|
||||
.driver_data = (void *)&nvidia_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBook 5,2",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,2"),
|
||||
},
|
||||
.driver_data = (void *)&nvidia_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBookAir 2,1",
|
||||
|
|
@ -191,6 +209,24 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
|
|||
},
|
||||
.driver_data = (void *)&nvidia_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBookPro 5,2",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,2"),
|
||||
},
|
||||
.driver_data = (void *)&nvidia_chipset_data,
|
||||
},
|
||||
{
|
||||
.callback = mbp_dmi_match,
|
||||
.ident = "MacBookPro 5,5",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,5"),
|
||||
},
|
||||
.driver_data = (void *)&nvidia_chipset_data,
|
||||
},
|
||||
{ }
|
||||
};
|
||||
|
||||
|
|
|
|||
250
drivers/video/backlight/wm831x_bl.c
Normal file
250
drivers/video/backlight/wm831x_bl.c
Normal file
|
|
@ -0,0 +1,250 @@
|
|||
/*
|
||||
* Backlight driver for Wolfson Microelectronics WM831x PMICs
|
||||
*
|
||||
* Copyright 2009 Wolfson Microelectonics plc
|
||||
*
|
||||
* 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 <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/backlight.h>
|
||||
|
||||
#include <linux/mfd/wm831x/core.h>
|
||||
#include <linux/mfd/wm831x/pdata.h>
|
||||
#include <linux/mfd/wm831x/regulator.h>
|
||||
|
||||
struct wm831x_backlight_data {
|
||||
struct wm831x *wm831x;
|
||||
int isink_reg;
|
||||
int current_brightness;
|
||||
};
|
||||
|
||||
static int wm831x_backlight_set(struct backlight_device *bl, int brightness)
|
||||
{
|
||||
struct wm831x_backlight_data *data = bl_get_data(bl);
|
||||
struct wm831x *wm831x = data->wm831x;
|
||||
int power_up = !data->current_brightness && brightness;
|
||||
int power_down = data->current_brightness && !brightness;
|
||||
int ret;
|
||||
|
||||
if (power_up) {
|
||||
/* Enable the ISINK */
|
||||
ret = wm831x_set_bits(wm831x, data->isink_reg,
|
||||
WM831X_CS1_ENA, WM831X_CS1_ENA);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
|
||||
/* Enable the DC-DC */
|
||||
ret = wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE,
|
||||
WM831X_DC4_ENA, WM831X_DC4_ENA);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (power_down) {
|
||||
/* DCDC first */
|
||||
ret = wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE,
|
||||
WM831X_DC4_ENA, 0);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
|
||||
/* ISINK */
|
||||
ret = wm831x_set_bits(wm831x, data->isink_reg,
|
||||
WM831X_CS1_DRIVE | WM831X_CS1_ENA, 0);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Set the new brightness */
|
||||
ret = wm831x_set_bits(wm831x, data->isink_reg,
|
||||
WM831X_CS1_ISEL_MASK, brightness);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
|
||||
if (power_up) {
|
||||
/* Drive current through the ISINK */
|
||||
ret = wm831x_set_bits(wm831x, data->isink_reg,
|
||||
WM831X_CS1_DRIVE, WM831X_CS1_DRIVE);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
data->current_brightness = brightness;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
/* If we were in the middle of a power transition always shut down
|
||||
* for safety.
|
||||
*/
|
||||
if (power_up || power_down) {
|
||||
wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, WM831X_DC4_ENA, 0);
|
||||
wm831x_set_bits(wm831x, data->isink_reg, WM831X_CS1_ENA, 0);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int wm831x_backlight_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;
|
||||
|
||||
if (bl->props.state & BL_CORE_SUSPENDED)
|
||||
brightness = 0;
|
||||
|
||||
return wm831x_backlight_set(bl, brightness);
|
||||
}
|
||||
|
||||
static int wm831x_backlight_get_brightness(struct backlight_device *bl)
|
||||
{
|
||||
struct wm831x_backlight_data *data = bl_get_data(bl);
|
||||
return data->current_brightness;
|
||||
}
|
||||
|
||||
static struct backlight_ops wm831x_backlight_ops = {
|
||||
.options = BL_CORE_SUSPENDRESUME,
|
||||
.update_status = wm831x_backlight_update_status,
|
||||
.get_brightness = wm831x_backlight_get_brightness,
|
||||
};
|
||||
|
||||
static int wm831x_backlight_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_pdata *wm831x_pdata;
|
||||
struct wm831x_backlight_pdata *pdata;
|
||||
struct wm831x_backlight_data *data;
|
||||
struct backlight_device *bl;
|
||||
int ret, i, max_isel, isink_reg, dcdc_cfg;
|
||||
|
||||
/* We need platform data */
|
||||
if (pdev->dev.parent->platform_data) {
|
||||
wm831x_pdata = pdev->dev.parent->platform_data;
|
||||
pdata = wm831x_pdata->backlight;
|
||||
} else {
|
||||
pdata = NULL;
|
||||
}
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "No platform data supplied\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Figure out the maximum current we can use */
|
||||
for (i = 0; i < WM831X_ISINK_MAX_ISEL; i++) {
|
||||
if (wm831x_isinkv_values[i] > pdata->max_uA)
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == 0) {
|
||||
dev_err(&pdev->dev, "Invalid max_uA: %duA\n", pdata->max_uA);
|
||||
return -EINVAL;
|
||||
}
|
||||
max_isel = i - 1;
|
||||
|
||||
if (pdata->max_uA != wm831x_isinkv_values[max_isel])
|
||||
dev_warn(&pdev->dev,
|
||||
"Maximum current is %duA not %duA as requested\n",
|
||||
wm831x_isinkv_values[max_isel], pdata->max_uA);
|
||||
|
||||
switch (pdata->isink) {
|
||||
case 1:
|
||||
isink_reg = WM831X_CURRENT_SINK_1;
|
||||
dcdc_cfg = 0;
|
||||
break;
|
||||
case 2:
|
||||
isink_reg = WM831X_CURRENT_SINK_2;
|
||||
dcdc_cfg = WM831X_DC4_FBSRC;
|
||||
break;
|
||||
default:
|
||||
dev_err(&pdev->dev, "Invalid ISINK %d\n", pdata->isink);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Configure the ISINK to use for feedback */
|
||||
ret = wm831x_reg_unlock(wm831x);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = wm831x_set_bits(wm831x, WM831X_DC4_CONTROL, WM831X_DC4_FBSRC,
|
||||
dcdc_cfg);
|
||||
|
||||
wm831x_reg_lock(wm831x);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
||||
if (data == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
data->wm831x = wm831x;
|
||||
data->current_brightness = 0;
|
||||
data->isink_reg = isink_reg;
|
||||
|
||||
bl = backlight_device_register("wm831x", &pdev->dev,
|
||||
data, &wm831x_backlight_ops);
|
||||
if (IS_ERR(bl)) {
|
||||
dev_err(&pdev->dev, "failed to register backlight\n");
|
||||
kfree(data);
|
||||
return PTR_ERR(bl);
|
||||
}
|
||||
|
||||
bl->props.max_brightness = max_isel;
|
||||
bl->props.brightness = max_isel;
|
||||
|
||||
platform_set_drvdata(pdev, bl);
|
||||
|
||||
/* Disable the DCDC if it was started so we can bootstrap */
|
||||
wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, WM831X_DC4_ENA, 0);
|
||||
|
||||
|
||||
backlight_update_status(bl);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wm831x_backlight_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bl = platform_get_drvdata(pdev);
|
||||
struct wm831x_backlight_data *data = bl_get_data(bl);
|
||||
|
||||
backlight_device_unregister(bl);
|
||||
kfree(data);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_backlight_driver = {
|
||||
.driver = {
|
||||
.name = "wm831x-backlight",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = wm831x_backlight_probe,
|
||||
.remove = wm831x_backlight_remove,
|
||||
};
|
||||
|
||||
static int __init wm831x_backlight_init(void)
|
||||
{
|
||||
return platform_driver_register(&wm831x_backlight_driver);
|
||||
}
|
||||
module_init(wm831x_backlight_init);
|
||||
|
||||
static void __exit wm831x_backlight_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&wm831x_backlight_driver);
|
||||
}
|
||||
module_exit(wm831x_backlight_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Backlight Driver for WM831x PMICs");
|
||||
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:wm831x-backlight");
|
||||
|
|
@ -27,6 +27,11 @@
|
|||
* Any other use of the locks below is probably wrong.
|
||||
*/
|
||||
|
||||
enum backlight_update_reason {
|
||||
BACKLIGHT_UPDATE_HOTKEY,
|
||||
BACKLIGHT_UPDATE_SYSFS,
|
||||
};
|
||||
|
||||
struct backlight_device;
|
||||
struct fb_info;
|
||||
|
||||
|
|
@ -100,6 +105,8 @@ static inline void backlight_update_status(struct backlight_device *bd)
|
|||
extern struct backlight_device *backlight_device_register(const char *name,
|
||||
struct device *dev, void *devdata, struct backlight_ops *ops);
|
||||
extern void backlight_device_unregister(struct backlight_device *bd);
|
||||
extern void backlight_force_update(struct backlight_device *bd,
|
||||
enum backlight_update_reason reason);
|
||||
|
||||
#define to_backlight_device(obj) container_of(obj, struct backlight_device, dev)
|
||||
|
||||
|
|
|
|||
28
include/linux/spi/lms283gf05.h
Normal file
28
include/linux/spi/lms283gf05.h
Normal file
|
|
@ -0,0 +1,28 @@
|
|||
/*
|
||||
* lms283gf05.h - Platform glue for Samsung LMS283GF05 LCD
|
||||
*
|
||||
* Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>
|
||||
*
|
||||
* 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, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#ifndef _INCLUDE_LINUX_SPI_LMS283GF05_H_
|
||||
#define _INCLUDE_LINUX_SPI_LMS283GF05_H_
|
||||
|
||||
struct lms283gf05_pdata {
|
||||
unsigned long reset_gpio;
|
||||
bool reset_inverted;
|
||||
};
|
||||
|
||||
#endif /* _INCLUDE_LINUX_SPI_LMS283GF05_H_ */
|
||||
Loading…
Reference in a new issue