修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/media/pci/ivtv/Kconfig
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@@ -1,3 +1,4 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 config VIDEO_IVTV
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 	tristate "Conexant cx23416/cx23415 MPEG encoder/decoder support"
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 	depends on VIDEO_V4L2 && PCI && I2C
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@@ -18,12 +19,12 @@
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 	select VIDEO_VP27SMPX
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 	select VIDEO_UPD64031A
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 	select VIDEO_UPD64083
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-	---help---
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+	help
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 	  This is a video4linux driver for Conexant cx23416 or cx23415 based
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 	  PCI personal video recorder devices.
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 	  This is used in devices such as the Hauppauge PVR-150/250/350/500
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-	  cards. There is a driver homepage at <http://www.ivtvdriver.org>.
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+	  cards.
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 	  To compile this driver as a module, choose M here: the
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 	  module will be called ivtv.
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@@ -31,8 +32,7 @@
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 config VIDEO_IVTV_DEPRECATED_IOCTLS
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 	bool "enable the DVB ioctls abuse on ivtv driver"
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 	depends on VIDEO_IVTV
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-	default n
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-	---help---
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+	help
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 	  Enable the usage of the a DVB set of ioctls that were abused by
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 	  IVTV driver for a while.
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@@ -45,7 +45,7 @@
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 	tristate "Conexant cx23415/cx23416 ALSA interface for PCM audio capture"
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 	depends on VIDEO_IVTV && SND
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 	select SND_PCM
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-	---help---
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+	help
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 	  This driver provides an ALSA interface as another method for user
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 	  applications to obtain PCM audio data from Conexant cx23415/cx23416
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 	  based PCI TV cards supported by the ivtv driver.
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@@ -63,15 +63,30 @@
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 	select FB_CFB_FILLRECT
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 	select FB_CFB_COPYAREA
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 	select FB_CFB_IMAGEBLIT
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-	---help---
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+	help
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 	  This is a framebuffer driver for the Conexant cx23415 MPEG
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 	  encoder/decoder.
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-	  This is used in the Hauppauge PVR-350 card. There is a driver
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-	  homepage at <http://www.ivtvdriver.org>.
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-
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-	  In order to use this module, you will need to boot with PAT disabled
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-	  on x86 systems, using the nopat kernel parameter.
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+	  This is used in the Hauppauge PVR-350 card.
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 	  To compile this driver as a module, choose M here: the
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 	  module will be called ivtvfb.
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+
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+config VIDEO_FB_IVTV_FORCE_PAT
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+	bool "force cx23415 framebuffer init with x86 PAT enabled"
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+	depends on VIDEO_FB_IVTV && X86_PAT
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+	help
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+	  With PAT enabled, the cx23415 framebuffer driver does not
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+	  utilize write-combined caching on the framebuffer memory.
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+	  For this reason, the driver will by default disable itself
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+	  when initializied on a kernel with PAT enabled (i.e. not
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+	  using the nopat kernel parameter).
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+
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+	  The driver is not easily upgradable to the PAT-aware
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+	  ioremap_wc() API since the firmware hides the address
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+	  ranges that should be marked write-combined from the driver.
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+
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+	  With this setting enabled, the framebuffer will initialize on
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+	  PAT-enabled systems but the framebuffer memory will be uncached.
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+
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+	  If unsure, say N.