}
-static int pmu_backlight_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops pmu_backlight_data = {
- .get_brightness = pmu_backlight_get_brightness,
.update_status = pmu_backlight_update_status,
};
return 0;
}
-static int samsungq10_bl_get_intensity(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops samsungq10_bl_ops = {
- .get_brightness = samsungq10_bl_get_intensity,
.update_status = samsungq10_bl_set_intensity,
};
known as the Corgi backlight driver. If you have a Sharp Zaurus
SL-C7xx, SL-Cxx00 or SL-6000x say y.
+config BACKLIGHT_IPAQ_MICRO
+ tristate "iPAQ microcontroller backlight driver"
+ depends on MFD_IPAQ_MICRO
+ default y
+ help
+ Say y to enable the backlight driver for Compaq iPAQ handheld
+ computers. Say yes if you have one of the h3100/h3600/h3700
+ machines.
+
config BACKLIGHT_LM3533
tristate "Backlight Driver for LM3533"
depends on BACKLIGHT_CLASS_DEVICE
obj-$(CONFIG_BACKLIGHT_GPIO) += gpio_backlight.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o
+obj-$(CONFIG_BACKLIGHT_IPAQ_MICRO) += ipaq_micro_bl.o
obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o
obj-$(CONFIG_BACKLIGHT_LM3630A) += lm3630a_bl.o
obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o
return aat2870->write(aat2870, AAT2870_BL_CH_EN, 0x0);
}
-static int aat2870_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static int aat2870_bl_update_status(struct backlight_device *bd)
{
struct aat2870_bl_driver_data *aat2870_bl = bl_get_data(bd);
static const struct backlight_ops aat2870_bl_ops = {
.options = BL_CORE_SUSPENDRESUME,
- .get_brightness = aat2870_bl_get_brightness,
.update_status = aat2870_bl_update_status,
.check_fb = aat2870_bl_check_fb,
};
return ams369fg06_power(lcd, power);
}
-static int ams369fg06_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static int ams369fg06_set_brightness(struct backlight_device *bd)
{
int ret = 0;
};
static const struct backlight_ops ams369fg06_backlight_ops = {
- .get_brightness = ams369fg06_get_brightness,
.update_status = ams369fg06_set_brightness,
};
mutex_lock(&bd->ops_lock);
if (bd->ops && bd->ops->get_brightness)
rc = sprintf(buf, "%d\n", bd->ops->get_brightness(bd));
+ else
+ rc = sprintf(buf, "%d\n", bd->props.brightness);
mutex_unlock(&bd->ops_lock);
return rc;
return 0;
}
-static int bd6107_backlight_get_brightness(struct backlight_device *backlight)
-{
- return backlight->props.brightness;
-}
-
static int bd6107_backlight_check_fb(struct backlight_device *backlight,
struct fb_info *info)
{
static const struct backlight_ops bd6107_backlight_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = bd6107_backlight_update_status,
- .get_brightness = bd6107_backlight_get_brightness,
.check_fb = bd6107_backlight_check_fb,
};
return 0;
}
-static int gpio_backlight_get_brightness(struct backlight_device *bl)
-{
- return bl->props.brightness;
-}
-
static int gpio_backlight_check_fb(struct backlight_device *bl,
struct fb_info *info)
{
static const struct backlight_ops gpio_backlight_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = gpio_backlight_update_status,
- .get_brightness = gpio_backlight_get_brightness,
.check_fb = gpio_backlight_check_fb,
};
--- /dev/null
+/*
+ * 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.
+ *
+ * iPAQ microcontroller backlight support
+ * Author : Linus Walleij <linus.walleij@linaro.org>
+ */
+
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/mfd/ipaq-micro.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+static int micro_bl_update_status(struct backlight_device *bd)
+{
+ struct ipaq_micro *micro = dev_get_drvdata(&bd->dev);
+ int intensity = bd->props.brightness;
+ struct ipaq_micro_msg msg = {
+ .id = MSG_BACKLIGHT,
+ .tx_len = 3,
+ };
+
+ if (bd->props.power != FB_BLANK_UNBLANK)
+ intensity = 0;
+ if (bd->props.state & (BL_CORE_FBBLANK | BL_CORE_SUSPENDED))
+ intensity = 0;
+
+ /*
+ * Message format:
+ * Byte 0: backlight instance (usually 1)
+ * Byte 1: on/off
+ * Byte 2: intensity, 0-255
+ */
+ msg.tx_data[0] = 0x01;
+ msg.tx_data[1] = intensity > 0 ? 1 : 0;
+ msg.tx_data[2] = intensity;
+ return ipaq_micro_tx_msg_sync(micro, &msg);
+}
+
+static const struct backlight_ops micro_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = micro_bl_update_status,
+};
+
+static struct backlight_properties micro_bl_props = {
+ .type = BACKLIGHT_RAW,
+ .max_brightness = 255,
+ .power = FB_BLANK_UNBLANK,
+ .brightness = 64,
+};
+
+static int micro_backlight_probe(struct platform_device *pdev)
+{
+ struct backlight_device *bd;
+ struct ipaq_micro *micro = dev_get_drvdata(pdev->dev.parent);
+
+ bd = devm_backlight_device_register(&pdev->dev, "ipaq-micro-backlight",
+ &pdev->dev, micro, µ_bl_ops,
+ µ_bl_props);
+ if (IS_ERR(bd))
+ return PTR_ERR(bd);
+
+ platform_set_drvdata(pdev, bd);
+ backlight_update_status(bd);
+
+ return 0;
+}
+
+static struct platform_driver micro_backlight_device_driver = {
+ .driver = {
+ .name = "ipaq-micro-backlight",
+ },
+ .probe = micro_backlight_probe,
+};
+module_platform_driver(micro_backlight_device_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("driver for iPAQ Atmel micro backlight");
+MODULE_ALIAS("platform:ipaq-micro-backlight");
jornada_ssp_start();
- if (jornada_ssp_byte(GETCONTRAST) != TXDUMMY) {
- dev_err(&ld->dev, "get contrast failed\n");
- jornada_ssp_end();
- return -ETIMEDOUT;
- } else {
+ if (jornada_ssp_byte(GETCONTRAST) == TXDUMMY) {
ret = jornada_ssp_byte(TXDUMMY);
- jornada_ssp_end();
- return ret;
+ goto success;
}
+
+ dev_err(&ld->dev, "failed to set contrast\n");
+ ret = -ETIMEDOUT;
+
+success:
+ jornada_ssp_end();
+ return ret;
}
static int jornada_lcd_set_contrast(struct lcd_device *ld, int value)
{
- int ret;
+ int ret = 0;
jornada_ssp_start();
/* start by sending our set contrast cmd to mcu */
- ret = jornada_ssp_byte(SETCONTRAST);
-
- /* push the new value */
- if (jornada_ssp_byte(value) != TXDUMMY) {
- dev_err(&ld->dev, "set contrast failed\n");
- jornada_ssp_end();
- return -ETIMEDOUT;
+ if (jornada_ssp_byte(SETCONTRAST) == TXDUMMY) {
+ /* if successful push the new value */
+ if (jornada_ssp_byte(value) == TXDUMMY)
+ goto success;
}
- /* if we get here we can assume everything went well */
- jornada_ssp_end();
+ dev_err(&ld->dev, "failed to set contrast\n");
+ ret = -ETIMEDOUT;
- return 0;
+success:
+ jornada_ssp_end();
+ return ret;
}
static int jornada_lcd_set_power(struct lcd_device *ld, int power)
return lcd->power;
}
-static int ld9040_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static int ld9040_set_brightness(struct backlight_device *bd)
{
int ret = 0, brightness = bd->props.brightness;
};
static const struct backlight_ops ld9040_backlight_ops = {
- .get_brightness = ld9040_get_brightness,
.update_status = ld9040_set_brightness,
};
return 0;
}
-static int lp855x_bl_get_brightness(struct backlight_device *bl)
-{
- return bl->props.brightness;
-}
-
static const struct backlight_ops lp855x_bl_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = lp855x_bl_update_status,
- .get_brightness = lp855x_bl_get_brightness,
};
static int lp855x_backlight_register(struct lp855x *lp)
return 0;
}
-static int lp8788_bl_get_brightness(struct backlight_device *bl_dev)
-{
- return bl_dev->props.brightness;
-}
-
static const struct backlight_ops lp8788_bl_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = lp8788_bl_update_status,
- .get_brightness = lp8788_bl_get_brightness,
};
static int lp8788_backlight_register(struct lp8788_bl *bl)
return 0;
}
-static int lv5207lp_backlight_get_brightness(struct backlight_device *backlight)
-{
- return backlight->props.brightness;
-}
-
static int lv5207lp_backlight_check_fb(struct backlight_device *backlight,
struct fb_info *info)
{
static const struct backlight_ops lv5207lp_backlight_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = lv5207lp_backlight_update_status,
- .get_brightness = lv5207lp_backlight_get_brightness,
.check_fb = lv5207lp_backlight_check_fb,
};
return 0;
}
-static int pandora_backlight_get_brightness(struct backlight_device *bl)
-{
- return bl->props.brightness;
-}
-
static const struct backlight_ops pandora_backlight_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = pandora_backlight_update_status,
- .get_brightness = pandora_backlight_get_brightness,
};
static int pandora_backlight_probe(struct platform_device *pdev)
return 0;
}
-static int pwm_backlight_get_brightness(struct backlight_device *bl)
-{
- return bl->props.brightness;
-}
-
static int pwm_backlight_check_fb(struct backlight_device *bl,
struct fb_info *info)
{
static const struct backlight_ops pwm_backlight_ops = {
.update_status = pwm_backlight_update_status,
- .get_brightness = pwm_backlight_get_brightness,
.check_fb = pwm_backlight_check_fb,
};
pb->dev = &pdev->dev;
pb->enabled = false;
- pb->enable_gpio = devm_gpiod_get(&pdev->dev, "enable");
+ pb->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable");
if (IS_ERR(pb->enable_gpio)) {
ret = PTR_ERR(pb->enable_gpio);
- if (ret == -ENOENT)
- pb->enable_gpio = NULL;
- else
- goto err_alloc;
+ goto err_alloc;
}
/*
return lcd->power;
}
-static int s6e63m0_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static int s6e63m0_set_brightness(struct backlight_device *bd)
{
int ret = 0, brightness = bd->props.brightness;
};
static const struct backlight_ops s6e63m0_backlight_ops = {
- .get_brightness = s6e63m0_get_brightness,
.update_status = s6e63m0_set_brightness,
};
return rc;
}
-static int tps65217_bl_get_brightness(struct backlight_device *bl)
-{
- return bl->props.brightness;
-}
-
static const struct backlight_ops tps65217_bl_ops = {
.options = BL_CORE_SUSPENDRESUME,
.update_status = tps65217_bl_update_status,
- .get_brightness = tps65217_bl_get_brightness
};
static int tps65217_bl_hw_init(struct tps65217_bl *tps65217_bl,
return 0;
}
-static int aty128_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops aty128_bl_data = {
- .get_brightness = aty128_bl_get_brightness,
.update_status = aty128_bl_update_status,
};
return 0;
}
-static int aty_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops aty_bl_data = {
- .get_brightness = aty_bl_get_brightness,
.update_status = aty_bl_update_status,
};
return 0;
}
-static int radeon_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops radeon_bl_data = {
- .get_brightness = radeon_bl_get_brightness,
.update_status = radeon_bl_update_status,
};
return lcd->power;
}
-static int s6e8ax0_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static int s6e8ax0_set_brightness(struct backlight_device *bd)
{
int ret = 0, brightness = bd->props.brightness;
};
static const struct backlight_ops s6e8ax0_backlight_ops = {
- .get_brightness = s6e8ax0_get_brightness,
.update_status = s6e8ax0_set_brightness,
};
return 0;
}
-static int nvidia_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops nvidia_bl_ops = {
- .get_brightness = nvidia_bl_get_brightness,
.update_status = nvidia_bl_update_status,
};
return 0;
}
-static int riva_bl_get_brightness(struct backlight_device *bd)
-{
- return bd->props.brightness;
-}
-
static const struct backlight_ops riva_bl_ops = {
- .get_brightness = riva_bl_get_brightness,
.update_status = riva_bl_update_status,
};
projects / cascardo / linux.git / commitdiff