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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>
This commit is contained in:
Nico Huber 2016-01-09 23:27:16 +01:00 committed by Martin Roth
parent c3571da263
commit b851cc69d6
2 changed files with 54 additions and 9 deletions
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5
src/northbridge/intel/gm45/chip.h
View File

@ -20,6 +20,11 @@
#include <drivers/intel/gma/i915.h> #include <drivers/intel/gma/i915.h>
struct northbridge_intel_gm45_config { 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; struct i915_gpu_controller_info gfx;
}; };

58
src/northbridge/intel/gm45/gma.c
View File

@ -37,6 +37,11 @@
static struct resource *gtt_res = NULL; 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) void gtt_write(u32 reg, u32 data)
{ {
write32(res2mmio(gtt_res, reg, 0), 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) static void gma_func0_init(struct device *dev)
{ {
u32 reg32; u32 reg32;
@ -430,7 +473,12 @@ static void gma_func0_init(struct device *dev)
if (!IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) { if (!IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) {
/* PCI Init, will run VBIOS */ /* PCI Init, will run VBIOS */
pci_dev_init(dev); 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; u32 physbase;
struct resource *lfb_res; struct resource *lfb_res;
struct resource *pio_res; struct resource *pio_res;
@ -453,14 +501,6 @@ static void gma_func0_init(struct device *dev)
generate_fake_intel_oprom(&conf->gfx, dev, generate_fake_intel_oprom(&conf->gfx, dev,
"$VBT IRONLAKE-MOBILE"); "$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) static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device)