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INKA4x0: Allow initialization of LCD backlight dimming from

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"brightness" environment variable.
This commit is contained in:
wdenk
2005-03-14 13:14:58 +00:00
parent e9684a536a
commit a0bdf49e39
4 changed files with 20 additions and 0 deletions
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15
board/inka4x0/inka4x0.c
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@@ -177,6 +177,16 @@ void flash_preinit(void)
int misc_init_f (void)
{
uchar tmp[10];
int i, br;
i = getenv_r("brightness", tmp, sizeof(tmp));
br = (i > 0)
? (int) simple_strtoul (tmp, NULL, 10)
: CFG_BRIGHTNESS;
if (br > 255)
br = 255;
/* Initialize GPIO output pins.
*/
/* Configure GPT as GPIO output */
@@ -187,6 +197,11 @@ int misc_init_f (void)
*(vu_long *)MPC5XXX_GPT4_ENABLE =
*(vu_long *)MPC5XXX_GPT5_ENABLE = 0x24;
/* Configure GPT7 as PWM timer, 1kHz, no ints. */
*(vu_long *)MPC5XXX_GPT7_ENABLE = 0;/* Disable */
*(vu_long *)MPC5XXX_GPT7_COUNTER = 0x020000fe;
*(vu_long *)MPC5XXX_GPT7_PWMCFG = (br << 16);
*(vu_long *)MPC5XXX_GPT7_ENABLE = 0x3;/* Enable PWM mode and start */
/* Configure PSC3_6,7 as GPIO output */
*(vu_long *)MPC5XXX_GPIO_ENABLE |= 0x00003000;