diff options
| author | Nico Huber <nico.h@gmx.de> | 2016-01-09 23:27:16 +0100 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-01-14 19:07:45 +0100 |
| commit | b851cc69d67a98dd4df43e4ac8b56b7533aa13b6 (patch) | |
| tree | f9923b8e67a379253e0a71967b1ef8cccdbdaeef /src/northbridge/intel | |
| parent | c3571da2633c6de4f856e8b8d700526573212894 (diff) | |
nb/intel/gm45: Backport configuration of panel power timings
Register settings are the same as on newer chips (compare sandy-
bridge), just at different locations.
Change-Id: Iea0359165074298a376e0e2ca8f37f71b83ac335
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/12885
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/northbridge/intel')
| -rw-r--r-- | src/northbridge/intel/gm45/chip.h | 5 | ||||
| -rw-r--r-- | src/northbridge/intel/gm45/gma.c | 58 |
2 files changed, 54 insertions, 9 deletions
diff --git a/src/northbridge/intel/gm45/chip.h b/src/northbridge/intel/gm45/chip.h index de9b512ebb..b537b93633 100644 --- a/src/northbridge/intel/gm45/chip.h +++ b/src/northbridge/intel/gm45/chip.h @@ -20,6 +20,11 @@ #include <drivers/intel/gma/i915.h> struct northbridge_intel_gm45_config { + u16 gpu_panel_power_up_delay; /* T1+T2 time sequence */ + u16 gpu_panel_power_down_delay; /* T3 time sequence */ + u16 gpu_panel_power_backlight_on_delay; /* T5 time sequence */ + u16 gpu_panel_power_backlight_off_delay; /* Tx time sequence */ + u8 gpu_panel_power_cycle_delay; /* T4 time sequence */ struct i915_gpu_controller_info gfx; }; diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c index 2824cf795f..299cb252d8 100644 --- a/src/northbridge/intel/gm45/gma.c +++ b/src/northbridge/intel/gm45/gma.c @@ -37,6 +37,11 @@ static struct resource *gtt_res = NULL; +u32 gtt_read(u32 reg) +{ + return read32(res2mmio(gtt_res, reg, 0)); +} + void gtt_write(u32 reg, u32 data) { write32(res2mmio(gtt_res, reg, 0), data); @@ -413,6 +418,44 @@ static void intel_gma_init(const struct northbridge_intel_gm45_config *info, } } +static void gma_pm_init_post_vbios(struct device *const dev) +{ + const struct northbridge_intel_gm45_config *const conf = dev->chip_info; + + u32 reg32; + + /* Setup Panel Power On Delays */ + reg32 = gtt_read(PP_ON_DELAYS); + if (!reg32) { + reg32 = (conf->gpu_panel_power_up_delay & 0x1fff) << 16; + reg32 |= (conf->gpu_panel_power_backlight_on_delay & 0x1fff); + gtt_write(PP_ON_DELAYS, reg32); + } + + /* Setup Panel Power Off Delays */ + reg32 = gtt_read(PP_OFF_DELAYS); + if (!reg32) { + reg32 = (conf->gpu_panel_power_down_delay & 0x1fff) << 16; + reg32 |= (conf->gpu_panel_power_backlight_off_delay & 0x1fff); + gtt_write(PP_OFF_DELAYS, reg32); + } + + /* Setup Panel Power Cycle Delay */ + if (conf->gpu_panel_power_cycle_delay) { + reg32 = gtt_read(PP_DIVISOR); + reg32 &= ~0x1f; + reg32 |= conf->gpu_panel_power_cycle_delay & 0x1f; + gtt_write(PP_DIVISOR, reg32); + } + + /* Enable Backlight */ + gtt_write(BLC_PWM_CTL2, (1 << 31)); + if (conf->gfx.backlight == 0) + gtt_write(BLC_PWM_CTL, 0x06100610); + else + gtt_write(BLC_PWM_CTL, conf->gfx.backlight); +} + static void gma_func0_init(struct device *dev) { u32 reg32; @@ -430,7 +473,12 @@ static void gma_func0_init(struct device *dev) if (!IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) { /* PCI Init, will run VBIOS */ pci_dev_init(dev); - } else { + } + + /* Post VBIOS init */ + gma_pm_init_post_vbios(dev); + + if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) { u32 physbase; struct resource *lfb_res; struct resource *pio_res; @@ -453,14 +501,6 @@ static void gma_func0_init(struct device *dev) generate_fake_intel_oprom(&conf->gfx, dev, "$VBT IRONLAKE-MOBILE"); } - - /* Post VBIOS init */ - /* Enable Backlight */ - gtt_write(BLC_PWM_CTL2, (1 << 31)); - if (conf->gfx.backlight == 0) - gtt_write(BLC_PWM_CTL, 0x06100610); - else - gtt_write(BLC_PWM_CTL, conf->gfx.backlight); } static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) |