linux-kernel - [PATCH v9 3/6] x86/intel-ivi: Add Intel In-Vehicle Infotainment (IVI) systems used in cars support

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Message-Id: <1478595443-6306-4-git-send-email-jui.nee.tan@intel.com>
Date:   Tue,  8 Nov 2016 16:57:20 +0800
From:   Tan Jui Nee <jui.nee.tan@...el.com>
To:     mika.westerberg@...ux.intel.com, heikki.krogerus@...ux.intel.com,
        andriy.shevchenko@...ux.intel.com, tglx@...utronix.de,
        mingo@...hat.com, hpa@...or.com, x86@...nel.org,
        ptyser@...-inc.com, lee.jones@...aro.org, linus.walleij@...aro.org
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        jui.nee.tan@...el.com, jonathan.yong@...el.com,
        ong.hock.yu@...el.com, tony.luck@...el.com,
        wan.ahmad.zainie.wan.mohamad@...el.com, yunying.sun@...el.com
Subject: [PATCH v9 3/6] x86/intel-ivi: Add Intel In-Vehicle Infotainment (IVI) systems used in cars support

Add support for non ACPI system, such as system that uses Advanced Boot
Loader (ABL) whereby a platform device has to be created in order to bind
with PINCTRL/GPIO.

At the moment, Intel Apollo Lake SoC requires P2SB driver to hide and
unhide P2SB to lookup P2SB BAR and pass the PCI BAR address to GPIO.

Signed-off-by: Tan Jui Nee <jui.nee.tan@...el.com>
---
Changes in V9:
	- No change

Changes in V8:
	- No change

 arch/x86/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e2c1dcf..aa8928a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -512,6 +512,14 @@ config X86_INTEL_CE
 	  This option compiles in support for the CE4100 SOC for settop
 	  boxes and media devices.
 
+config X86_INTEL_IVI
+	bool "Intel In-Vehicle Infotainment (IVI) systems used in cars"
+	---help---
+	  Select this option to enable MMIO BAR access over the P2SB for
+	  non-ACPI Intel Apollo Lake SoC platforms. This driver uses the P2SB
+	  hide/unhide mechanism cooperatively to pass the PCI BAR address to
+	  the platform driver, currently GPIO.
+
 config X86_INTEL_MID
 	bool "Intel MID platform support"
 	depends on X86_EXTENDED_PLATFORM
-- 
1.9.1