diff options
Diffstat (limited to 'src/northbridge/intel/haswell/gma.c')
| -rw-r--r-- | src/northbridge/intel/haswell/gma.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/northbridge/intel/haswell/gma.c b/src/northbridge/intel/haswell/gma.c index 9dfba9a316..057d65ad55 100644 --- a/src/northbridge/intel/haswell/gma.c +++ b/src/northbridge/intel/haswell/gma.c @@ -28,6 +28,7 @@ #include <drivers/intel/gma/i915.h> #include <cpu/intel/haswell/haswell.h> #include <stdlib.h> +#include <string.h> #include "chip.h" #include "haswell.h" @@ -130,7 +131,10 @@ static struct resource *gtt_res = NULL; u32 gtt_read(u32 reg) { - return read32(gtt_res->base + reg); + u32 val; + val = read32(gtt_res->base + reg); + return val; + } void gtt_write(u32 reg, u32 data) @@ -157,7 +161,7 @@ static inline void gtt_write_regs(const struct gt_reg *gt) } #define GTT_RETRY 1000 -static int gtt_poll(u32 reg, u32 mask, u32 value) +int gtt_poll(u32 reg, u32 mask, u32 value) { unsigned try = GTT_RETRY; u32 data; @@ -177,6 +181,13 @@ static void power_well_enable(void) { gtt_write(HSW_PWR_WELL_CTL1, HSW_PWR_WELL_ENABLE); gtt_poll(HSW_PWR_WELL_CTL1, HSW_PWR_WELL_STATE, HSW_PWR_WELL_STATE); +#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + /* In the native graphics case, we've got about 20 ms. + * after we power up the the AUX channel until we can talk to it. + * So get that going right now. We can't turn on the panel, yet, just VDD. + */ + gtt_write(PCH_PP_CONTROL, PCH_PP_UNLOCK| EDP_FORCE_VDD | PANEL_POWER_RESET); +#endif } static void gma_pm_init_pre_vbios(struct device *dev) |