-
-#ifdef CONFIG_PMAC_BACKLIGHT
-
-/* TODO: Dbl check these tables, we don't go up to full ON backlight
- * in these, possibly because we noticed MacOS doesn't, but I'd prefer
- * having some more official numbers from ATI
- */
-static int backlight_conv_m6[] = {
- 0xff, 0xc0, 0xb5, 0xaa, 0x9f, 0x94, 0x89, 0x7e,
- 0x73, 0x68, 0x5d, 0x52, 0x47, 0x3c, 0x31, 0x24
-};
-static int backlight_conv_m7[] = {
- 0x00, 0x3f, 0x4a, 0x55, 0x60, 0x6b, 0x76, 0x81,
- 0x8c, 0x97, 0xa2, 0xad, 0xb8, 0xc3, 0xce, 0xd9
-};
-
-#define BACKLIGHT_LVDS_OFF
-#undef BACKLIGHT_DAC_OFF
-
-/* We turn off the LCD completely instead of just dimming the backlight.
- * This provides some greater power saving and the display is useless
- * without backlight anyway.
- */
-static int radeon_set_backlight_enable(int on, int level, void *data)
-{
- struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
- u32 lvds_gen_cntl, tmpPixclksCntl;
- int* conv_table;
-
- if (rinfo->mon1_type != MT_LCD)
- return 0;
-
- /* Pardon me for that hack... maybe some day we can figure
- * out in what direction backlight should work on a given
- * panel ?
- */
- if ((rinfo->family == CHIP_FAMILY_RV200 ||
- rinfo->family == CHIP_FAMILY_RV250 ||
- rinfo->family == CHIP_FAMILY_RV280 ||
- rinfo->family == CHIP_FAMILY_RV350) &&
- !machine_is_compatible("PowerBook4,3") &&
- !machine_is_compatible("PowerBook6,3") &&
- !machine_is_compatible("PowerBook6,5"))
- conv_table = backlight_conv_m7;
- else
- conv_table = backlight_conv_m6;
-
- del_timer_sync(&rinfo->lvds_timer);
- radeon_engine_idle();
-
- lvds_gen_cntl = INREG(LVDS_GEN_CNTL);
- if (on && (level > BACKLIGHT_OFF)) {
- lvds_gen_cntl &= ~LVDS_DISPLAY_DIS;
- if (!(lvds_gen_cntl & LVDS_BLON) || !(lvds_gen_cntl & LVDS_ON)) {
- lvds_gen_cntl |= (rinfo->init_state.lvds_gen_cntl & LVDS_DIGON);
- lvds_gen_cntl |= LVDS_BLON | LVDS_EN;
- OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
- lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
- lvds_gen_cntl |= (conv_table[level] <<
- LVDS_BL_MOD_LEVEL_SHIFT);
- lvds_gen_cntl |= LVDS_ON;
- lvds_gen_cntl |= (rinfo->init_state.lvds_gen_cntl & LVDS_BL_MOD_EN);
- rinfo->pending_lvds_gen_cntl = lvds_gen_cntl;
- mod_timer(&rinfo->lvds_timer,
- jiffies + msecs_to_jiffies(rinfo->panel_info.pwr_delay));
- } else {
- lvds_gen_cntl &= ~LVDS_BL_MOD_LEVEL_MASK;
- lvds_gen_cntl |= (conv_table[level] <<
- LVDS_BL_MOD_LEVEL_SHIFT);
- OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
- }
- rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
- rinfo->init_state.lvds_gen_cntl |= rinfo->pending_lvds_gen_cntl
- & LVDS_STATE_MASK;
- } else {
- /* Asic bug, when turning off LVDS_ON, we have to make sure
- RADEON_PIXCLK_LVDS_ALWAYS_ON bit is off
- */
- tmpPixclksCntl = INPLL(PIXCLKS_CNTL);
- if (rinfo->is_mobility || rinfo->is_IGP)
- OUTPLLP(PIXCLKS_CNTL, 0, ~PIXCLK_LVDS_ALWAYS_ONb);
- lvds_gen_cntl &= ~(LVDS_BL_MOD_LEVEL_MASK | LVDS_BL_MOD_EN);
- lvds_gen_cntl |= (conv_table[0] <<
- LVDS_BL_MOD_LEVEL_SHIFT);
- lvds_gen_cntl |= LVDS_DISPLAY_DIS;
- OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
- udelay(100);
- lvds_gen_cntl &= ~(LVDS_ON | LVDS_EN);
- OUTREG(LVDS_GEN_CNTL, lvds_gen_cntl);
- lvds_gen_cntl &= ~(LVDS_DIGON);
- rinfo->pending_lvds_gen_cntl = lvds_gen_cntl;
- mod_timer(&rinfo->lvds_timer,
- jiffies + msecs_to_jiffies(rinfo->panel_info.pwr_delay));
- if (rinfo->is_mobility || rinfo->is_IGP)
- OUTPLL(PIXCLKS_CNTL, tmpPixclksCntl);
- }
- rinfo->init_state.lvds_gen_cntl &= ~LVDS_STATE_MASK;
- rinfo->init_state.lvds_gen_cntl |= (lvds_gen_cntl & LVDS_STATE_MASK);
-
- return 0;
-}
-
-
-static int radeon_set_backlight_level(int level, void *data)
-{
- return radeon_set_backlight_enable(1, level, data);
-}
-#endif /* CONFIG_PMAC_BACKLIGHT */
-
-