254 lines
7.6 KiB
C
254 lines
7.6 KiB
C
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/*
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* Platform Dependent file for Qualcomm MSM/APQ
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*
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* Copyright (C) 1999-2017, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: dhd_custom_msm.c 674523 2016-12-09 04:05:27Z $
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/gpio.h>
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#include <linux/skbuff.h>
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#include <linux/wlan_plat.h>
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#include <linux/mmc/host.h>
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#include <linux/msm_pcie.h>
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#include <linux/fcntl.h>
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#include <linux/fs.h>
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#include <linux/of_gpio.h>
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#if defined(CONFIG_ARCH_MSM8996) || defined(CONFIG_ARCH_MSM8998)
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#include <linux/msm_pcie.h>
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#endif /* CONFIG_ARCH_MSM8996 || CONFIG_ARCH_MSM8998 */
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#ifdef CONFIG_BROADCOM_WIFI_RESERVED_MEM
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extern int dhd_init_wlan_mem(void);
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extern void *dhd_wlan_mem_prealloc(int section, unsigned long size);
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#endif /* CONFIG_BROADCOM_WIFI_RESERVED_MEM */
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#define WIFI_TURNON_DELAY 200
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static int wlan_reg_on = -1;
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#define DHD_DT_COMPAT_ENTRY "android,bcmdhd_wlan"
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#ifdef CUSTOMER_HW2
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#define WIFI_WL_REG_ON_PROPNAME "wl_reg_on"
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#else
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#define WIFI_WL_REG_ON_PROPNAME "wlan-en-gpio"
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#endif /* CUSTOMER_HW2 */
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#if defined(CONFIG_ARCH_MSM8996) || defined(CONFIG_ARCH_MSM8998)
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#define MSM_PCIE_CH_NUM 0
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#else
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#define MSM_PCIE_CH_NUM 1
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#endif /* CONFIG_ARCH_MSM8996 || CONFIG_ARCH_MSM8998 */
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#ifdef CONFIG_BCMDHD_OOB_HOST_WAKE
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static int wlan_host_wake_up = -1;
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static int wlan_host_wake_irq = 0;
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#ifdef CUSTOMER_HW2
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#define WIFI_WLAN_HOST_WAKE_PROPNAME "wl_host_wake"
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#else
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#define WIFI_WLAN_HOST_WAKE_PROPNAME "wlan-host-wake-gpio"
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#endif /* CUSTOMER_HW2 */
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#endif /* CONFIG_BCMDHD_OOB_HOST_WAKE */
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int __init
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dhd_wifi_init_gpio(void)
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{
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char *wlan_node = DHD_DT_COMPAT_ENTRY;
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struct device_node *root_node = NULL;
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root_node = of_find_compatible_node(NULL, NULL, wlan_node);
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if (!root_node) {
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WARN(1, "failed to get device node of BRCM WLAN\n");
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return -ENODEV;
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}
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/* ========== WLAN_PWR_EN ============ */
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wlan_reg_on = of_get_named_gpio(root_node, WIFI_WL_REG_ON_PROPNAME, 0);
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printk(KERN_INFO "%s: gpio_wlan_power : %d\n", __FUNCTION__, wlan_reg_on);
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if (gpio_request_one(wlan_reg_on, GPIOF_OUT_INIT_LOW, "WL_REG_ON")) {
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printk(KERN_ERR "%s: Faiiled to request gpio %d for WL_REG_ON\n",
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__FUNCTION__, wlan_reg_on);
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} else {
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printk(KERN_ERR "%s: gpio_request WL_REG_ON done - WLAN_EN: GPIO %d\n",
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__FUNCTION__, wlan_reg_on);
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}
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if (gpio_direction_output(wlan_reg_on, 1)) {
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printk(KERN_ERR "%s: WL_REG_ON failed to pull up\n", __FUNCTION__);
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} else {
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printk(KERN_ERR "%s: WL_REG_ON is pulled up\n", __FUNCTION__);
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}
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if (gpio_get_value(wlan_reg_on)) {
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printk(KERN_INFO "%s: Initial WL_REG_ON: [%d]\n",
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__FUNCTION__, gpio_get_value(wlan_reg_on));
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}
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/* Wait for WIFI_TURNON_DELAY due to power stability */
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msleep(WIFI_TURNON_DELAY);
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#ifdef CONFIG_BCMDHD_OOB_HOST_WAKE
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/* ========== WLAN_HOST_WAKE ============ */
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wlan_host_wake_up = of_get_named_gpio(root_node, WIFI_WLAN_HOST_WAKE_PROPNAME, 0);
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printk(KERN_INFO "%s: gpio_wlan_host_wake : %d\n", __FUNCTION__, wlan_host_wake_up);
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#ifndef CUSTOMER_HW2
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if (gpio_request_one(wlan_host_wake_up, GPIOF_IN, "WLAN_HOST_WAKE")) {
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printk(KERN_ERR "%s: Failed to request gpio %d for WLAN_HOST_WAKE\n",
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__FUNCTION__, wlan_host_wake_up);
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return -ENODEV;
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} else {
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printk(KERN_ERR "%s: gpio_request WLAN_HOST_WAKE done"
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" - WLAN_HOST_WAKE: GPIO %d\n",
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__FUNCTION__, wlan_host_wake_up);
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}
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#endif /* !CUSTOMER_HW2 */
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gpio_direction_input(wlan_host_wake_up);
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wlan_host_wake_irq = gpio_to_irq(wlan_host_wake_up);
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#endif /* CONFIG_BCMDHD_OOB_HOST_WAKE */
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#if defined(CONFIG_BCM4359) || defined(CONFIG_BCM4361)
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printk(KERN_INFO "%s: Call msm_pcie_enumerate\n", __FUNCTION__);
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msm_pcie_enumerate(MSM_PCIE_CH_NUM);
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#endif /* CONFIG_BCM4359 || CONFIG_BCM4361 */
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return 0;
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}
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int
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dhd_wlan_power(int onoff)
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{
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printk(KERN_INFO"------------------------------------------------");
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printk(KERN_INFO"------------------------------------------------\n");
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printk(KERN_INFO"%s Enter: power %s\n", __func__, onoff ? "on" : "off");
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if (onoff) {
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if (gpio_direction_output(wlan_reg_on, 1)) {
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printk(KERN_ERR "%s: WL_REG_ON is failed to pull up\n", __FUNCTION__);
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return -EIO;
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}
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if (gpio_get_value(wlan_reg_on)) {
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printk(KERN_INFO"WL_REG_ON on-step-2 : [%d]\n",
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gpio_get_value(wlan_reg_on));
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} else {
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printk("[%s] gpio value is 0. We need reinit.\n", __func__);
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if (gpio_direction_output(wlan_reg_on, 1)) {
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printk(KERN_ERR "%s: WL_REG_ON is "
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"failed to pull up\n", __func__);
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}
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}
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} else {
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if (gpio_direction_output(wlan_reg_on, 0)) {
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printk(KERN_ERR "%s: WL_REG_ON is failed to pull up\n", __FUNCTION__);
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return -EIO;
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}
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if (gpio_get_value(wlan_reg_on)) {
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printk(KERN_INFO"WL_REG_ON on-step-2 : [%d]\n",
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gpio_get_value(wlan_reg_on));
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}
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}
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return 0;
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}
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EXPORT_SYMBOL(dhd_wlan_power);
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static int
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dhd_wlan_reset(int onoff)
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{
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return 0;
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}
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static int
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dhd_wlan_set_carddetect(int val)
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{
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return 0;
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}
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struct resource dhd_wlan_resources = {
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.name = "bcmdhd_wlan_irq",
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.start = 0, /* Dummy */
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.end = 0, /* Dummy */
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_SHAREABLE |
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#ifdef CONFIG_BCMDHD_PCIE
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IORESOURCE_IRQ_HIGHEDGE,
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#else
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IORESOURCE_IRQ_HIGHLEVEL,
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#endif /* CONFIG_BCMDHD_PCIE */
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};
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EXPORT_SYMBOL(dhd_wlan_resources);
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struct wifi_platform_data dhd_wlan_control = {
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.set_power = dhd_wlan_power,
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.set_reset = dhd_wlan_reset,
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.set_carddetect = dhd_wlan_set_carddetect,
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#ifdef CONFIG_BROADCOM_WIFI_RESERVED_MEM
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.mem_prealloc = dhd_wlan_mem_prealloc,
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#endif /* CONFIG_BROADCOM_WIFI_RESERVED_MEM */
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};
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EXPORT_SYMBOL(dhd_wlan_control);
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int __init
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dhd_wlan_init(void)
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{
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int ret;
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printk(KERN_INFO"%s: START.......\n", __FUNCTION__);
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ret = dhd_wifi_init_gpio();
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if (ret < 0) {
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printk(KERN_ERR "%s: failed to initiate GPIO, ret=%d\n",
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__FUNCTION__, ret);
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goto fail;
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}
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#ifdef CONFIG_BCMDHD_OOB_HOST_WAKE
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dhd_wlan_resources.start = wlan_host_wake_irq;
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dhd_wlan_resources.end = wlan_host_wake_irq;
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#endif /* CONFIG_BCMDHD_OOB_HOST_WAKE */
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#ifdef CONFIG_BROADCOM_WIFI_RESERVED_MEM
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ret = dhd_init_wlan_mem();
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if (ret < 0) {
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printk(KERN_ERR "%s: failed to alloc reserved memory,"
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" ret=%d\n", __FUNCTION__, ret);
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}
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#endif /* CONFIG_BROADCOM_WIFI_RESERVED_MEM */
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fail:
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printk(KERN_INFO"%s: FINISH.......\n", __FUNCTION__);
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return ret;
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}
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#if defined(CONFIG_ARCH_MSM8996) || defined(CONFIG_ARCH_MSM8998)
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#if defined(CONFIG_DEFERRED_INITCALLS)
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deferred_module_init(dhd_wlan_init);
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#else
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late_initcall(dhd_wlan_init);
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#endif /* CONFIG_DEFERRED_INITCALLS */
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#else
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device_initcall(dhd_wlan_init);
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#endif /* CONFIG_ARCH_MSM8996 || CONFIG_ARCH_MSM8998 */
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