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authorLars-Peter Clausen <lars@metafoo.de>2009-11-02 19:54:35 +0100
committerLars-Peter Clausen <lars@metafoo.de>2010-05-17 19:59:40 +0200
commitc93252fe4964991bc6d2b200f740fe59995f3342 (patch)
tree263b6b57bc546735c54b7e02287d52665fa7511f /include
parent501a67c8d153ad5849fc47720598fa2c4c05144b (diff)
backlight/mfd: Add pcf50633 backlight driver
This patch adds a backlight driver controling the pcf50633 led converter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mfd/pcf50633/backlight.h44
-rw-r--r--include/linux/mfd/pcf50633/core.h4
2 files changed, 48 insertions, 0 deletions
diff --git a/include/linux/mfd/pcf50633/backlight.h b/include/linux/mfd/pcf50633/backlight.h
new file mode 100644
index 00000000000..9d3646af056
--- /dev/null
+++ b/include/linux/mfd/pcf50633/backlight.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
+ * PCF50633 backlight device driver
+ *
+ * This program 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.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __LINUX_MFD_PCF50633_BACKLIGHT
+#define __LINUX_MFD_PCF50633_BACKLIGHT
+
+/*
+* @default_brightness: Brightness to be used after the driver has been
+ probed. Valid range 0-63.
+* @default_brightness_limit: Brightness limit to be used after the driver has
+* been probed. This is usfull when it is not known
+* how much power is available for the backlight
+* during probe. Valid range 0-63
+* @ramp_time: When changing the backlights brightness the change
+* is not instant, instead it fades smooth from one
+* state to another. This value specifies how long the
+* fade should take. The lower the value the higher
+* the fade time. Valid range 0-255
+*/
+struct pcf50633_bl_platform_data {
+ unsigned int default_brightness;
+ unsigned int default_brightness_limit;
+ uint8_t ramp_time;
+};
+
+
+struct pcf50633;
+
+int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit);
+
+#endif
+
diff --git a/include/linux/mfd/pcf50633/core.h b/include/linux/mfd/pcf50633/core.h
index 3398bd9aab1..ad411a78870 100644
--- a/include/linux/mfd/pcf50633/core.h
+++ b/include/linux/mfd/pcf50633/core.h
@@ -18,6 +18,7 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/power_supply.h>
+#include <linux/mfd/pcf50633/backlight.h>
struct pcf50633;
@@ -43,6 +44,8 @@ struct pcf50633_platform_data {
void (*force_shutdown)(struct pcf50633 *);
u8 resumers[5];
+
+ struct pcf50633_bl_platform_data *backlight_data;
};
struct pcf50633_irq {
@@ -152,6 +155,7 @@ struct pcf50633 {
struct platform_device *mbc_pdev;
struct platform_device *adc_pdev;
struct platform_device *input_pdev;
+ struct platform_device *bl_pdev;
struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
};