summaryrefslogtreecommitdiff
path: root/firmware/drivers/pcf50606.c
diff options
context:
space:
mode:
authorHristo Kovachev <bger@rockbox.org>2006-01-19 13:10:15 +0000
committerHristo Kovachev <bger@rockbox.org>2006-01-19 13:10:15 +0000
commit4926682378ea22225675a4155a4fd3e5671f1a1c (patch)
tree0ef2efeecdcd16e1b483e0d518dd89de7059ba7e /firmware/drivers/pcf50606.c
parentacf7d5e89e356cfe9e137e7e9eff74ddbbc9bc09 (diff)
downloadrockbox-4926682378ea22225675a4155a4fd3e5671f1a1c.tar.gz
rockbox-4926682378ea22225675a4155a4fd3e5671f1a1c.zip
Patch #1404233 by Peter D'Hoye: H300 brightness bugfix
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8387 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/pcf50606.c')
-rw-r--r--firmware/drivers/pcf50606.c23
1 files changed, 1 insertions, 22 deletions
diff --git a/firmware/drivers/pcf50606.c b/firmware/drivers/pcf50606.c
index af2c2ca2eb..f4c93deb38 100644
--- a/firmware/drivers/pcf50606.c
+++ b/firmware/drivers/pcf50606.c
@@ -44,8 +44,6 @@
44/* delay loop to achieve 400kHz at 120MHz CPU frequency */ 44/* delay loop to achieve 400kHz at 120MHz CPU frequency */
45#define DELAY do { int _x; for(_x=0;_x<22;_x++);} while(0) 45#define DELAY do { int _x; for(_x=0;_x<22;_x++);} while(0)
46 46
47void pcf50606_set_bl_pwm(unsigned char ucVal);
48
49static void pcf50606_i2c_start(void) 47static void pcf50606_i2c_start(void)
50{ 48{
51 SDA_OUTPUT; 49 SDA_OUTPUT;
@@ -285,24 +283,5 @@ void pcf50606_init(void)
285 pcf50606_write(0x09, 0x05); /* USB and ON key debounce: 14ms */ 283 pcf50606_write(0x09, 0x05); /* USB and ON key debounce: 14ms */
286 pcf50606_write(0x29, 0x1C); /* Disable the unused MBC module */ 284 pcf50606_write(0x29, 0x1C); /* Disable the unused MBC module */
287 285
288 /* Backlight PWM = 512Hz 50/50 */ 286 pcf50606_write(0x35, 0x13); /* Backlight PWM = 512Hz 50/50 */
289 /*pcf50606_write(0x35, 0x13);*/
290 pcf50606_set_bl_pwm(9);
291}
292
293void pcf50606_set_bl_pwm(unsigned char ucVal)
294{
295 /* set the backlight PWM */
296 /* range is 0 - 15 */
297
298 /* limit incoming value */
299 ucVal = ucVal & 0x0F;
300
301 /* shift one bit left */
302 ucVal = ucVal << 1;
303 ucVal = ucVal | 0x01;
304
305 /* 0x00 = 512Hz */
306 ucVal = ucVal | 0x00;
307 pcf50606_write(0x35, ucVal);
308} 287}