mirror of
https://git.yoctoproject.org/meta-ti
synced 2026-07-16 22:38:04 +00:00
Koen Kooi
4e18d70247
This patchset is managed in https://github.com/beagleboard/kernel/tree/beagleboard-3.2 by Robert Nelson and myself. Tested on beagleboard-xM/Angstrom Signed-off-by: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Denys Dmytriyenko <denys@ti.com>
125 lines
3.9 KiB
Diff
125 lines
3.9 KiB
Diff
From a165f2f70ebcf073cfc934c510ecf86bb028ef4e Mon Sep 17 00:00:00 2001
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From: Koen Kooi <koen@dominion.thruhere.net>
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Date: Fri, 27 Apr 2012 21:30:00 +0200
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Subject: [PATCH 13/13] tlc59108: adjust for beagleboard+uLCD7
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Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
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---
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drivers/video/backlight/tlc59108.c | 48 ++++++++++++++++++++++++------------
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1 files changed, 32 insertions(+), 16 deletions(-)
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diff --git a/drivers/video/backlight/tlc59108.c b/drivers/video/backlight/tlc59108.c
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index 4f4ea34..de2d2ee 100755
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--- a/drivers/video/backlight/tlc59108.c
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+++ b/drivers/video/backlight/tlc59108.c
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@@ -29,9 +29,16 @@
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#include <linux/backlight.h>
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#include <linux/fb.h>
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-#define tlc59108_MODULE_NAME "tlc59108"
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#define TLC59108_MODE1 0x00
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-#define TLC59108_PWM2 0x04
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+#define TLC59108_MODE2 0x01
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+#define TLC59108_PWM0 0x02
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+#define TLC59108_PWM1 0x03
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+#define TLC59108_PWM2 0x04
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+#define TLC59108_PWM3 0x05
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+#define TLC59108_PWM4 0x06
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+#define TLC59108_PWM5 0x07
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+#define TLC59108_PWM6 0x08
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+#define TLC59108_PWM7 0x09
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#define TLC59108_LEDOUT0 0x0c
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#define TLC59108_LEDOUT1 0x0d
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#define TLC59108_MAX_BRIGHTNESS 0xFF
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@@ -43,15 +50,9 @@ struct tlc59108_bl {
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static void tlc59108_bl_set_backlight(struct tlc59108_bl *data, int brightness)
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{
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- /* Set Mode1 Register */
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- i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
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-
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- /* Set LEDOUT0 Register */
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- i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x21);
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-
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/* Set Backlight Duty Cycle*/
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i2c_smbus_write_byte_data(data->client, TLC59108_PWM2,
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- brightness & 0xff);
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+ 0xff - brightness );
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}
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static int tlc59108_bl_get_brightness(struct backlight_device *dev)
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@@ -65,7 +66,17 @@ static int tlc59108_bl_update_status(struct backlight_device *dev)
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{
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struct backlight_properties *props = &dev->props;
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struct tlc59108_bl *data = dev_get_drvdata(&dev->dev);
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- int brightness = props->brightness;
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+
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+ int brightness = props->brightness;
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+
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+ if (dev->props.state & BL_CORE_FBBLANK) {
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+ brightness = 0;
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+ /* Set LEDOUT0 Register */
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+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x10);
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+ } else {
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+ /* Set LEDOUT0 Register */
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+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT0, 0x30);
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+ }
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tlc59108_bl_set_backlight(data, brightness);
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@@ -77,7 +88,7 @@ static const struct backlight_ops bl_ops = {
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.update_status = tlc59108_bl_update_status,
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};
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-static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
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+static int __devinit tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
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{
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struct backlight_properties props;
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struct tlc59108_bl *data = kzalloc(sizeof(struct tlc59108_bl),
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@@ -104,6 +115,11 @@ static int tlc59108_probe(struct i2c_client *c, const struct i2c_device_id *id)
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backlight_update_status(data->bl);
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+ i2c_smbus_write_byte_data(data->client, TLC59108_MODE1, 0x00);
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+ i2c_smbus_write_byte_data(data->client, TLC59108_PWM2, 0x80);
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+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x05);
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+ i2c_smbus_write_byte_data(data->client, TLC59108_LEDOUT1, 0x15);
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+
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return 0;
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err_reg:
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@@ -125,7 +141,7 @@ static int tlc59108_remove(struct i2c_client *c)
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}
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/* I2C Device ID table */
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-static const struct i2c_device_id tlc59108_id[] = {
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+static struct i2c_device_id tlc59108_id[] = {
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{ "tlc59108", 0 },
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{ }
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};
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@@ -134,12 +150,12 @@ MODULE_DEVICE_TABLE(i2c, tlc59108_id);
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/* I2C driver data */
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static struct i2c_driver tlc59108_driver = {
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.driver = {
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- .owner = THIS_MODULE,
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- .name = tlc59108_MODULE_NAME,
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+ .owner = THIS_MODULE,
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+ .name = "tlc59108"
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},
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+ .id_table = tlc59108_id,
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.probe = tlc59108_probe,
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.remove = tlc59108_remove,
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- .id_table = tlc59108_id,
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};
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static int __init tlc59108_init(void)
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@@ -157,4 +173,4 @@ module_exit(tlc59108_exit);
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MODULE_DESCRIPTION("LCD/Backlight control for TLC59108");
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MODULE_AUTHOR("Senthil Natarajan <senthil.n@ti.com>");
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-MODULE_LICENSE("GPL v2");
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+MODULE_LICENSE("GPL");
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--
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1.7.7.4
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