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Commit 658ae035 authored by Alexei Avshalom Lazar's avatar Alexei Avshalom Lazar
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msm_11ad: Add 11ad platform driver 



Platform driver used to handle msm specific platform
requirement for 11ad chipset connected to msm platform
Takes care of platform support like:

- power switch through dedicated GPIO
- bus frequency voting
- SMMU attachment

This is a snapshot of commit Iee67284b71fab87c2b4a002d7e67d24ef83a9ac9
("Revert "msm_11ad: keep rf_clk3 on during wil6210 activity"").

Change-Id: I3d19fe54197c48b9d846b32c619bf5f2a14dbf5b
CRs-Fixed: 2143032
Signed-off-by: default avatarAlexei Avshalom Lazar <ailizaro@codeaurora.org>
parent bca90e2f

Documentation/devicetree/bindings/arm/msm/wil6210.txt

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wil6210 - Qualcomm Technologies Inc. 802.11ad Wireless Driver



wil6210 driver is responsible for managing 802.11ad chipset

connected to MSM over PCIe interface.



The platform data is needed in order to perform proper

bus-scaling and SMMU initialization by the driver.



Required properties:



- compatible: "qcom,wil6210"

- qcom,smmu-support: Boolean flag indicating whether PCIe has SMMU support

- qcom,smmu-s1-en: Boolean flag indicating whether SMMU stage1 should be enabled

- qcom,smmu-fast-map: Boolean flag indicating whether SMMU fast mapping should be enabled

- qcom,smmu-coherent: Boolean flag indicating SMMU dma and page table coherency

- qcom,smmu-mapping: specifies the base address and size of SMMU space

- qcom,pcie-parent: phandle for the PCIe root complex to which 11ad card is connected

- Refer to "Documentation/devicetree/bindings/arm/msm/msm_bus.txt" for

  the below optional properties:

	- qcom,msm-bus,name

	- qcom,msm-bus,num-cases

	- qcom,msm-bus,num-paths

	- qcom,msm-bus,vectors-KBps



Optional properties:

- qcom,sleep-clk-en: GPIO for sleep clock used for low power modes by 11ad card

- qcom,wigig-en: Enable GPIO connected to 11ad card

- qcom,use-ext-supply: Boolean flag to indicate if 11ad SIP uses external power supply

- vdd-supply: phandle to 11ad VDD regulator node

- vddio-supply: phandle to 11ad VDDIO regulator node

- qcom,use-ext-clocks: Boolean flag to indicate if 11ad SIP uses external clocks

- clocks	    : List of phandle and clock specifier pairs

- clock-names       : List of clock input name strings sorted in the same

		      order as the clocks property.

- qcom,keep-radio-on-during-sleep: Boolean flag to indicate if to suspend to d3hot

				   instead of turning off the device



Example:

	wil6210: qcom,wil6210 {

		compatible = "qcom,wil6210";

		qcom,smmu-support;

		qcom,smmu-s1-en;

		qcom,smmu-fast-map;

		qcom,smmu-coherent;

		qcom,smmu-mapping = <0x20000000 0xe0000000>;

		qcom,pcie-parent = <&pcie1>;

		qcom,wigig-en = <&tlmm 94 0>;

		qcom,msm-bus,name = "wil6210";

		qcom,msm-bus,num-cases = <2>;

		qcom,msm-bus,num-paths = <1>;

		qcom,msm-bus,vectors-KBps =

			<100 512 0 0>,

			<100 512 600000 800000>; /* ~4.6Gbps (MCS12) */

		qcom,use-ext-supply;

		vdd-supply= <&pm8998_s7>;

		vddio-supply= <&pm8998_s5>;

		qcom,use-ext-clocks;

		clocks = <&clock_gcc clk_rf_clk3>,

			 <&clock_gcc clk_rf_clk3_pin>;

		clock-names = "rf_clk3_clk", "rf_clk3_pin_clk";

		qcom,keep-radio-on-during-sleep;

	};

drivers/platform/msm/Kconfig

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@@ -147,4 +147,16 @@ config IPA_UT 
	  The user interface to run and control the tests is debugfs file

	  system.



config MSM_11AD

	tristate "Platform driver for 11ad chip"

	depends on PCI

	depends on PCI_MSM

	default n

	---help---

	  This module adds required platform support for wireless adapter based on

	  Qualcomm Technologies, Inc. 11ad chip, integrated into MSM platform



	  If you choose to build it as a module, it will be called

	  msm_11ad_proxy.



endmenu

drivers/platform/msm/Makefile

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@@ -9,3 +9,4 @@ obj-$(CONFIG_USB_BAM) += usb_bam.o 
obj-$(CONFIG_GSI) += gsi/

obj-$(CONFIG_IPA) += ipa/

obj-$(CONFIG_IPA3) += ipa/

obj-$(CONFIG_MSM_11AD) += msm_11ad/

drivers/platform/msm/msm_11ad/Makefile

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obj-$(CONFIG_MSM_11AD) += msm_11ad_proxy.o



msm_11ad_proxy-y := msm_11ad.o

subdir-ccflags-y += -D__CHECK_ENDIAN__



# need to locate wil_platform.h

WIL_11AD_PATH = drivers/net/wireless/ath/wil6210

subdir-ccflags-y += -I$(WIL_11AD_PATH)