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

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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: Andy 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: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Shevchenko 2016-08-31 16:57:12 +03:00 committed by Ingo Molnar
parent 70b5b18f71
commit dd8d6ec672
2 changed files with 97 additions and 0 deletions
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2
arch/x86/platform/intel-mid/device_libs/Makefile
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@ -1,5 +1,7 @@
# 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

95
arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c Normal file
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@ -0,0 +1,95 @@
/*
* 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);