From: zhangzhijie <zhangzhijie@bosc.ac.cn>
To: zhangzhijie@bosc.ac.cn, wangran@bosc.ac.cn, zhangjian@bosc.ac.cn,
daniel@ffwll.ch, jani.nikula@linux.intel.com,
rodrigo.vivi@intel.com, joonas.lahtinen@linux.intel.com,
tursulin@ursulin.net, airlied@gmail.com,
intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1] Support Intel Xe GPU dirver Porting on RISC-V Architecture
Date: Tue, 15 Jul 2025 14:18:37 +0800 [thread overview]
Message-ID: <20250715061837.2144388-1-zhangzhijie@bosc.ac.cn> (raw)
inb/outb speccial wire not support on other ARCH.
Should detect whether arch platform support or not.
Signed-off-by: zhangzhijie <zhangzhijie@bosc.ac.cn>
---
drivers/gpu/drm/i915/display/intel_vga.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_vga.c b/drivers/gpu/drm/i915/display/intel_vga.c
index 4b98833bfa8c..5e48e3282670 100644
--- a/drivers/gpu/drm/i915/display/intel_vga.c
+++ b/drivers/gpu/drm/i915/display/intel_vga.c
@@ -33,6 +33,7 @@ void intel_vga_disable(struct drm_i915_private *dev_priv)
if (intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE)
return;
+#if defined(CONFIG_X86) || defined(CONFIG_X86_64)
/* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
outb(0x01, VGA_SEQ_I);
@@ -40,6 +41,7 @@ void intel_vga_disable(struct drm_i915_private *dev_priv)
outb(sr1 | VGA_SR01_SCREEN_OFF, VGA_SEQ_D);
vga_put(pdev, VGA_RSRC_LEGACY_IO);
udelay(300);
+#endif
intel_de_write(dev_priv, vga_reg, VGA_DISP_DISABLE);
intel_de_posting_read(dev_priv, vga_reg);
@@ -80,6 +82,7 @@ void intel_vga_redisable(struct drm_i915_private *i915)
void intel_vga_reset_io_mem(struct drm_i915_private *i915)
{
+#if defined(CONFIG_X86) || defined(CONFIG_X86_64)
struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
/*
@@ -95,6 +98,7 @@ void intel_vga_reset_io_mem(struct drm_i915_private *i915)
vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
outb(inb(VGA_MIS_R), VGA_MIS_W);
vga_put(pdev, VGA_RSRC_LEGACY_IO);
+#endif
}
int intel_vga_register(struct drm_i915_private *i915)
--
2.34.1
reply other threads:[~2025-07-15 6:18 UTC|newest]
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