void lcd_enable(void)
{
#ifdef CONFIG_USE_FDT
u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL);
if (dtbaddr == ~0UL) {
puts("lcdpower: failed to get 'dtbaddr' from env!\n");
return;
}
unsigned int driver = FDTPROP(dtbaddr, PATHINF, "brightdrv");
unsigned int bright = FDTPROP(dtbaddr, PATHINF, "brightdef");
unsigned int pwmfrq = FDTPROP(dtbaddr, PATHINF, "brightfdim");
#else
unsigned int driver = getenv_ulong("ds1_bright_drv", 16, 0UL);
unsigned int bright = getenv_ulong("ds1_bright_def", 10, 50);
unsigned int pwmfrq = getenv_ulong("ds1_pwmfreq", 10, ~0UL);
#endif
unsigned int tmp;
struct gptimer *const timerhw = (struct gptimer *)DM_TIMER6_BASE;
bright = bright != ~0UL ? bright : 50;
switch (driver) {
case 0: /* PMIC LED-Driver */
/* brightness level */
tps65217_reg_write(TPS65217_PROT_LEVEL_NONE,
TPS65217_WLEDCTRL2, bright, 0xFF);
/* turn on light */
tps65217_reg_write(TPS65217_PROT_LEVEL_NONE,
TPS65217_WLEDCTRL1, 0x0A, 0xFF);
break;
case 1: /* PWM using timer6 */
if (pwmfrq != ~0UL) {
timerhw->tiocp_cfg = TCFG_RESET;
udelay(10);
while (timerhw->tiocp_cfg & TCFG_RESET)
;
tmp = ~0UL-(V_OSCK/pwmfrq); /* bottom value */
timerhw->tldr = tmp;
timerhw->tcrr = tmp;
tmp = tmp + ((V_OSCK/pwmfrq)/100) * bright;
timerhw->tmar = tmp;
timerhw->tclr = (TCLR_PT | (2 << TCLR_TRG_SHIFT) |
TCLR_CE | TCLR_AR | TCLR_ST);
} else {
puts("invalid pwmfrq in env/dtb! skip PWM-setup.\n");
}
break;
default:
puts("no suitable backlightdriver in env/dtb!\n");
break;
}
br_summaryscreen();
}
void lcd_enable(void)
{
br_summaryscreen();
lcdbacklight(1);
}
