diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vga.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vga.c | 97 |
1 files changed, 48 insertions, 49 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vga.c b/drivers/gpu/drm/i915/display/intel_vga.c index 4b98833bfa8c..05d140c8032d 100644 --- a/drivers/gpu/drm/i915/display/intel_vga.c +++ b/drivers/gpu/drm/i915/display/intel_vga.c @@ -3,36 +3,68 @@ * Copyright © 2019 Intel Corporation */ +#include <linux/delay.h> +#include <linux/pci.h> #include <linux/vgaarb.h> +#include <drm/drm_device.h> +#include <drm/drm_print.h> #include <video/vga.h> + #include "soc/intel_gmch.h" -#include "i915_drv.h" #include "i915_reg.h" #include "intel_de.h" +#include "intel_display.h" #include "intel_vga.h" +#include "intel_vga_regs.h" -static i915_reg_t intel_vga_cntrl_reg(struct drm_i915_private *i915) +static i915_reg_t intel_vga_cntrl_reg(struct intel_display *display) { - if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) + if (display->platform.valleyview || display->platform.cherryview) return VLV_VGACNTRL; - else if (DISPLAY_VER(i915) >= 5) + else if (DISPLAY_VER(display) >= 5) return CPU_VGACNTRL; else return VGACNTRL; } +static bool has_vga_pipe_sel(struct intel_display *display) +{ + if (display->platform.i845g || + display->platform.i865g) + return false; + + if (display->platform.valleyview || + display->platform.cherryview) + return true; + + return DISPLAY_VER(display) < 7; +} + /* Disable the VGA plane that we never use */ -void intel_vga_disable(struct drm_i915_private *dev_priv) +void intel_vga_disable(struct intel_display *display) { - struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); - i915_reg_t vga_reg = intel_vga_cntrl_reg(dev_priv); + struct pci_dev *pdev = to_pci_dev(display->drm->dev); + i915_reg_t vga_reg = intel_vga_cntrl_reg(display); + enum pipe pipe; + u32 tmp; u8 sr1; - if (intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE) + tmp = intel_de_read(display, vga_reg); + if (tmp & VGA_DISP_DISABLE) return; + if (display->platform.cherryview) + pipe = REG_FIELD_GET(VGA_PIPE_SEL_MASK_CHV, tmp); + else if (has_vga_pipe_sel(display)) + pipe = REG_FIELD_GET(VGA_PIPE_SEL_MASK, tmp); + else + pipe = PIPE_A; + + drm_dbg_kms(display->drm, "Disabling VGA plane on pipe %c\n", + pipe_name(pipe)); + /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */ vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO); outb(0x01, VGA_SEQ_I); @@ -41,46 +73,13 @@ void intel_vga_disable(struct drm_i915_private *dev_priv) vga_put(pdev, VGA_RSRC_LEGACY_IO); udelay(300); - intel_de_write(dev_priv, vga_reg, VGA_DISP_DISABLE); - intel_de_posting_read(dev_priv, vga_reg); -} - -void intel_vga_redisable_power_on(struct drm_i915_private *dev_priv) -{ - i915_reg_t vga_reg = intel_vga_cntrl_reg(dev_priv); - - if (!(intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE)) { - drm_dbg_kms(&dev_priv->drm, - "Something enabled VGA plane, disabling it\n"); - intel_vga_disable(dev_priv); - } -} - -void intel_vga_redisable(struct drm_i915_private *i915) -{ - intel_wakeref_t wakeref; - - /* - * This function can be called both from intel_modeset_setup_hw_state or - * at a very early point in our resume sequence, where the power well - * structures are not yet restored. Since this function is at a very - * paranoid "someone might have enabled VGA while we were not looking" - * level, just check if the power well is enabled instead of trying to - * follow the "don't touch the power well if we don't need it" policy - * the rest of the driver uses. - */ - wakeref = intel_display_power_get_if_enabled(i915, POWER_DOMAIN_VGA); - if (!wakeref) - return; - - intel_vga_redisable_power_on(i915); - - intel_display_power_put(i915, POWER_DOMAIN_VGA, wakeref); + intel_de_write(display, vga_reg, VGA_DISP_DISABLE); + intel_de_posting_read(display, vga_reg); } -void intel_vga_reset_io_mem(struct drm_i915_private *i915) +void intel_vga_reset_io_mem(struct intel_display *display) { - struct pci_dev *pdev = to_pci_dev(i915->drm.dev); + struct pci_dev *pdev = to_pci_dev(display->drm->dev); /* * After we re-enable the power well, if we touch VGA register 0x3d5 @@ -97,10 +96,10 @@ void intel_vga_reset_io_mem(struct drm_i915_private *i915) vga_put(pdev, VGA_RSRC_LEGACY_IO); } -int intel_vga_register(struct drm_i915_private *i915) +int intel_vga_register(struct intel_display *display) { - struct pci_dev *pdev = to_pci_dev(i915->drm.dev); + struct pci_dev *pdev = to_pci_dev(display->drm->dev); int ret; /* @@ -118,9 +117,9 @@ int intel_vga_register(struct drm_i915_private *i915) return 0; } -void intel_vga_unregister(struct drm_i915_private *i915) +void intel_vga_unregister(struct intel_display *display) { - struct pci_dev *pdev = to_pci_dev(i915->drm.dev); + struct pci_dev *pdev = to_pci_dev(display->drm->dev); vga_client_unregister(pdev); } |