diff options
Diffstat (limited to 'src/soc/intel/common/block/graphics/graphics.c')
| -rw-r--r-- | src/soc/intel/common/block/graphics/graphics.c | 53 |
1 files changed, 42 insertions, 11 deletions
diff --git a/src/soc/intel/common/block/graphics/graphics.c b/src/soc/intel/common/block/graphics/graphics.c index 4bec7a4cc6..e744ca7f05 100644 --- a/src/soc/intel/common/block/graphics/graphics.c +++ b/src/soc/intel/common/block/graphics/graphics.c @@ -16,7 +16,19 @@ #include <soc/pci_devs.h> #include <types.h> +/* Display Type: +* 0 - only internal display aka eDP attached +* 1 - only external display aka HDMI/USB-C attached +* 2 - dual display aka both internal and external display attached +*/ +enum display_type { + INTERNAL_DISPLAY_ONLY, + EXTERNAL_DISPLAY_ONLY, + DUAL_DISPLAY, +}; + #define GFX_MBUS_CTL 0x4438C +#define GFX_MBUS_SEL(x) (GFX_MBUS_CTL + (x)) #define GFX_MBUS_JOIN BIT(31) #define GFX_MBUS_HASHING_MODE BIT(30) #define GFX_MBUS_JOIN_PIPE_SEL (BIT(28) | BIT(27) | BIT(26)) @@ -69,7 +81,7 @@ static uint32_t graphics_get_ddi_func_ctrl(unsigned long reg) * Consider external display is present and enabled, if eDP/DDI-A is not enabled * and transcoder is attached to any DDI port (bits 27-30 are not zero). */ -static int get_external_display_status(void) +static enum display_type get_external_display_status(void) { /* Read the transcoder register for DDI-A (eDP) */ uint32_t ddi_a_func_ctrl = graphics_get_ddi_func_ctrl(TRANS_DDI_FUNC_CTL_A); @@ -81,20 +93,27 @@ static int get_external_display_status(void) * Report no external display in both cases. */ if (ddi_a_func_ctrl == TRANS_DDI_PORT_NONE) { - return 0; + return INTERNAL_DISPLAY_ONLY; } else { - if ((ddi_a_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_A)) && - (ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_B))) { + if (ddi_a_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_A) && + (ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_B) +#if CONFIG(INTEL_GMA_VERSION_2) + || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C1) + || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C2) + || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C3) + || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C4) +#endif + )) { /* * Dual display detected: both DDI-A(eDP) and * DDI-B(HDMI) pipes are active */ - return 1; + return DUAL_DISPLAY; } else { if (ddi_a_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_A)) - return 0; + return INTERNAL_DISPLAY_ONLY; else - return 1; + return EXTERNAL_DISPLAY_ONLY; } } } @@ -266,13 +285,25 @@ static void graphics_dev_final(struct device *dev) pci_dev_request_bus_master(dev); if (CONFIG(SOC_INTEL_GFX_MBUS_JOIN)) { + enum display_type type = get_external_display_status(); uint32_t hashing_mode = 0; /* 2x2 */ - uint32_t pipe_select = 0; /* None */ - if (!get_external_display_status()) { + if (type == INTERNAL_DISPLAY_ONLY) { hashing_mode = GFX_MBUS_HASHING_MODE; /* 1x4 */ - pipe_select = GFX_MBUS_JOIN_PIPE_SEL; /* Pipe-A */ + /* Only eDP pipes is joining the MBUS */ + graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_A), PIPE_A, GFX_MBUS_JOIN | hashing_mode); + } else if (type == DUAL_DISPLAY) { + /* All pipes are joining the MBUS */ + graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_A), PIPE_A, GFX_MBUS_JOIN | hashing_mode); + graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_B), PIPE_B, GFX_MBUS_JOIN | hashing_mode); + graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_C), PIPE_C, GFX_MBUS_JOIN | hashing_mode); +#if CONFIG(INTEL_GMA_VERSION_2) + graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_D), PIPE_D, GFX_MBUS_JOIN | hashing_mode); +#endif + } else { + /* No pipe joins the MBUS */ + graphics_gtt_rmw(GFX_MBUS_CTL, GFX_MBUS_JOIN_PIPE_SEL, + GFX_MBUS_JOIN | hashing_mode); } - graphics_gtt_rmw(GFX_MBUS_CTL, (uint32_t)(~pipe_select), GFX_MBUS_JOIN | hashing_mode); } } |