linux-kernel - [PATCH v11 3/6] x86/intel-ivi: Add Intel In-Vehicle Infotainment (IVI) systems used in cars support

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Message-Id: <1479446550-28677-4-git-send-email-jui.nee.tan@intel.com>
Date:   Fri, 18 Nov 2016 13:22:27 +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,
        dvhart@...radead.org, 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, platform-driver-x86@...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 v11 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>
Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
Changes in V11:
	- Select CONFIG_P2SB when CONFIG_X86_INTEL_IVI is enabled instead of
	  CONFIG_LPC_ICH is enabled. This is to fix kbuildbot error.

Changes in V10:
	- No change

Changes in V9:
	- No change

Changes in V8:
	- No change

 arch/x86/Kconfig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index bada636..6019755 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -512,6 +512,16 @@ 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"
+	depends on X86 && PCI
+	select P2SB
+	---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