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From a165f2f70ebcf073cfc934c510ecf86bb028ef4e Mon Sep 17 00:00:00 2001
From: Koen Kooi <koen@dominion.thruhere.net>
Date: Fri, 27 Apr 2012 21:30:00 +0200
Subject: [PATCH 13/13] tlc59108: adjust for beagleboard+uLCD7
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
---
drivers/video/backlight/tlc59108.c | 48 ++++++++++++++++++++++++------------
1 files changed, 32 insertions(+), 16 deletions(-)
diff --git a/drivers/video/backlight/tlc59108.c b/drivers/video/backlight/tlc59108.c
index 4f4ea34..de2d2ee 100755
--- a/drivers/video/backlight/tlc59108.c
+++ b/drivers/video/backlight/tlc59108.c
@@ -29,9 +29,16 @@
#include <linux/backlight.h>
#include <linux/fb.h>
-#define tlc59108_MODULE_NAME "tlc59108"
#define TLC59108_MODE1 0x00
-#define TLC59108_PWM2 0x04
+#define TLC59108_MODE2 0x01
+#define TLC59108_PWM0 0x02
+#define TLC59108_PWM1 0x03
+#define TLC59108_PWM2 0x04
+#define TLC59108_PWM3 0x05
+#define TLC59108_PWM4 0x06
+#define TLC59108_PWM5 0x07
+#define TLC59108_PWM6 0x08
+#define TLC59108_PWM7 0x09
#define TLC59108_LEDOUT0 0x0c
#define TLC59108_LEDOUT1 0x0d
#define TLC59108_MAX_BRIGHTNESS 0xFF
@@ -43,15 +50,9 @@ struct tlc59108_bl {
static void tlc59108_bl_set_backlight(struct tlc59108_bl *data, int brightness)
{
- /* Set Mode1 Register */
- i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
-
- /* Set LEDOUT0 Register */
- i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x21);
-
/* Set Backlight Duty Cycle*/
i2c_smbus_write_byte_data(data->client, TLC59108_PWM2,
- brightness & 0xff);
+ 0xff - brightness );
}
static int tlc59108_bl_get_brightness(struct backlight_device *dev)
@@ -65,7 +66,17 @@ static int tlc59108_bl_update_status(struct backlight_device *dev)
{
struct backlight_properties *props = &dev->props;
struct tlc59108_bl *data = dev_get_drvdata(&dev->dev);
- int brightness = props->brightness;
+
+ int brightness = props->brightness;
+
+ if (dev->props.state & BL_CORE_FBBLANK) {
+ brightness = 0;
+ /* Set LEDOUT0 Register */
+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x10);
+ } else {
+ /* Set LEDOUT0 Register */
+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x30);
+ }
tlc59108_bl_set_backlight(data, brightness);
@@ -77,7 +88,7 @@ static const struct backlight_ops bl_ops = {
.update_status = tlc59108_bl_update_status,
};
-static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
+static int __devinit tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
{
struct backlight_properties props;
struct tlc59108_bl *data = kzalloc(sizeof(struct tlc59108_bl),
@@ -104,6 +115,11 @@ static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
backlight_update_status(data->bl);
+ i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
+ i2c_smbus_write_byte_data(data->client, TLC59108_PWM2, 0x80);
+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x05);
+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x15);
+
return 0;
err_reg:
@@ -125,7 +141,7 @@ static int tlc59108_remove(struct i2c_client *c)
}
/* I2C Device ID table */
-static const struct i2c_device_id tlc59108_id[] = {
+static struct i2c_device_id tlc59108_id[] = {
{ "tlc59108", 0 },
{ }
};
@@ -134,12 +150,12 @@ MODULE_DEVICE_TABLE(i2c, tlc59108_id);
/* I2C driver data */
static struct i2c_driver tlc59108_driver = {
.driver = {
- .owner = THIS_MODULE,
- .name = tlc59108_MODULE_NAME,
+ .owner = THIS_MODULE,
+ .name = "tlc59108"
},
+ .id_table = tlc59108_id,
.probe = tlc59108_probe,
.remove = tlc59108_remove,
- .id_table = tlc59108_id,
};
static int __init tlc59108_init(void)
@@ -157,4 +173,4 @@ module_exit(tlc59108_exit);
MODULE_DESCRIPTION("LCD/Backlight control for TLC59108");
MODULE_AUTHOR("Senthil Natarajan <senthil.n@ti.com>");
-MODULE_LICENSE("GPL v2");
+MODULE_LICENSE("GPL");
--
1.7.7.4
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