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Commit dd8d6ec6 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Ingo Molnar
Browse files

x86/platform/intel-mid: Enable WiFi on Intel Edison 



Intel Edison board provides built-in WiFi dongle based on Broadcom BCM43340.

Append the essential data to enable WiFi on Intel Edison.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160831135713.79066-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 70b5b18f

arch/x86/platform/intel-mid/device_libs/Makefile

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Original line number Diff line number Diff line 
# Family-Level Interface Shim (FLIS)

obj-$(subst m,y,$(CONFIG_PINCTRL_MERRIFIELD)) += platform_mrfld_pinctrl.o

# WiFi

obj-$(subst m,y,$(CONFIG_BRCMFMAC_SDIO)) += platform_bcm43xx.o

# IPC Devices

obj-y += platform_ipc.o

obj-$(subst m,y,$(CONFIG_MFD_INTEL_MSIC)) += platform_msic.o

arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c

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+95 −0
Original line number Diff line number Diff line 
/*

 * platform_bcm43xx.c: bcm43xx platform data initilization file

 *

 * (C) Copyright 2016 Intel Corporation

 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; version 2

 * of the License.

 */



#include <linux/gpio.h>

#include <linux/platform_device.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/fixed.h>

#include <linux/sfi.h>



#include <asm/intel-mid.h>



#define WLAN_SFI_GPIO_IRQ_NAME		"WLAN-interrupt"

#define WLAN_SFI_GPIO_ENABLE_NAME	"WLAN-enable"



#define WLAN_DEV_NAME			"0000:00:01.3"



static struct regulator_consumer_supply bcm43xx_vmmc_supply = {

	.dev_name		= WLAN_DEV_NAME,

	.supply			= "vmmc",

};



static struct regulator_init_data bcm43xx_vmmc_data = {

	.constraints = {

		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,

	},

	.num_consumer_supplies	= 1,

	.consumer_supplies	= &bcm43xx_vmmc_supply,

};



static struct fixed_voltage_config bcm43xx_vmmc = {

	.supply_name		= "bcm43xx-vmmc-regulator",

	/*

	 * Announce 2.0V here to be compatible with SDIO specification. The

	 * real voltage and signaling are still 1.8V.

	 */

	.microvolts		= 2000000,		/* 1.8V */

	.gpio			= -EINVAL,

	.startup_delay		= 250 * 1000,		/* 250ms */

	.enable_high		= 1,			/* active high */

	.enabled_at_boot	= 0,			/* disabled at boot */

	.init_data		= &bcm43xx_vmmc_data,

};



static struct platform_device bcm43xx_vmmc_regulator = {

	.name		= "reg-fixed-voltage",

	.id		= PLATFORM_DEVID_AUTO,

	.dev = {

		.platform_data	= &bcm43xx_vmmc,

	},

};



static int __init bcm43xx_regulator_register(void)

{

	int ret;



	bcm43xx_vmmc.gpio = get_gpio_by_name(WLAN_SFI_GPIO_ENABLE_NAME);

	ret = platform_device_register(&bcm43xx_vmmc_regulator);

	if (ret) {

		pr_err("%s: vmmc regulator register failed\n", __func__);

		return ret;

	}



	return 0;

}



static void __init *bcm43xx_platform_data(void *info)

{

	int ret;



	ret = bcm43xx_regulator_register();

	if (ret)

		return NULL;



	pr_info("Using generic wifi platform data\n");



	/* For now it's empty */

	return NULL;

}



static const struct devs_id bcm43xx_clk_vmmc_dev_id __initconst = {

	.name			= "bcm43xx_clk_vmmc",

	.type			= SFI_DEV_TYPE_SD,

	.get_platform_data	= &bcm43xx_platform_data,

};



sfi_device(bcm43xx_clk_vmmc_dev_id);