drivers/net/wireless/wl12xx/sdio.c - kernel/msm-4.19 - Gitiles

 /*
  * This file is part of wl1271
  *
  * Copyright (C) 2009-2010 Nokia Corporation
  *
  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA
  *
  */

 #include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/crc7.h>
 #include <linux/vmalloc.h>
 #include <linux/mmc/sdio_func.h>
 #include <linux/mmc/sdio_ids.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
 #include <linux/gpio.h>
 #include <linux/wl12xx.h>
 #include <linux/pm_runtime.h>

 #include "wl12xx.h"
 #include "wl12xx_80211.h"
 #include "io.h"

 #ifndef SDIO_VENDOR_ID_TI
 #define SDIO_VENDOR_ID_TI		0x0097
 #endif

 #ifndef SDIO_DEVICE_ID_TI_WL1271
 #define SDIO_DEVICE_ID_TI_WL1271	0x4076
 #endif

 static const struct sdio_device_id wl1271_devices[] = {
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
 	{}
 };
 MODULE_DEVICE_TABLE(sdio, wl1271_devices);

 /* The max SDIO block size is 256 when working with tx padding to SDIO block */
 #define TX_PAD_SDIO_BLK_SIZE                  256

 static void wl1271_sdio_set_block_size(struct wl1271 *wl)
 {
 	wl->block_size = TX_PAD_SDIO_BLK_SIZE;

 	sdio_claim_host(wl->if_priv);
 	sdio_set_block_size(wl->if_priv, TX_PAD_SDIO_BLK_SIZE);
 	sdio_release_host(wl->if_priv);
 }

 static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
 {
 	return wl->if_priv;
 }

 static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
 {
 	return &(wl_to_func(wl)->dev);
 }

 static irqreturn_t wl1271_hardirq(int irq, void *cookie)
 {
 	struct wl1271 *wl = cookie;
 	unsigned long flags;

 	wl1271_debug(DEBUG_IRQ, "IRQ");

 	/* complete the ELP completion */
 	spin_lock_irqsave(&wl->wl_lock, flags);
 	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
 	if (wl->elp_compl) {
 		complete(wl->elp_compl);
 		wl->elp_compl = NULL;
 	}
 	spin_unlock_irqrestore(&wl->wl_lock, flags);

 	return IRQ_WAKE_THREAD;
 }

 static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
 {
 	disable_irq(wl->irq);
 }

 static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
 {
 	enable_irq(wl->irq);
 }

 static void wl1271_sdio_reset(struct wl1271 *wl)
 {
 }

 static void wl1271_sdio_init(struct wl1271 *wl)
 {
 }

 static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
 				 size_t len, bool fixed)
 {
 	int ret;
 	struct sdio_func *func = wl_to_func(wl);

 	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
 		((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
 		wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
 			     addr, ((u8 *)buf)[0]);
 	} else {
 		if (fixed)
 			ret = sdio_readsb(func, buf, addr, len);
 		else
 			ret = sdio_memcpy_fromio(func, buf, addr, len);

 		wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
 			     addr, len);
 		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
 	}

 	if (ret)
 		wl1271_error("sdio read failed (%d)", ret);
 }

 static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
 				  size_t len, bool fixed)
 {
 	int ret;
 	struct sdio_func *func = wl_to_func(wl);

 	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
 		sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
 		wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
 			     addr, ((u8 *)buf)[0]);
 	} else {
 		wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
 			     addr, len);
 		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);

 		if (fixed)
 			ret = sdio_writesb(func, addr, buf, len);
 		else
 			ret = sdio_memcpy_toio(func, addr, buf, len);
 	}

 	if (ret)
 		wl1271_error("sdio write failed (%d)", ret);
 }

 static int wl1271_sdio_power_on(struct wl1271 *wl)
 {
 	struct sdio_func *func = wl_to_func(wl);
 	int ret;

 	/* Make sure the card will not be powered off by runtime PM */
 	ret = pm_runtime_get_sync(&func->dev);
 	if (ret < 0)
 		goto out;

 	/* Runtime PM might be disabled, so power up the card manually */
 	ret = mmc_power_restore_host(func->card->host);
 	if (ret < 0)
 		goto out;

 	sdio_claim_host(func);
 	sdio_enable_func(func);

 	/* Set the default block size in case it was modified */
 	sdio_set_block_size(func, 0);

 out:
 	return ret;
 }

 static int wl1271_sdio_power_off(struct wl1271 *wl)
 {
 	struct sdio_func *func = wl_to_func(wl);
 	int ret;

 	sdio_disable_func(func);
 	sdio_release_host(func);

 	/* Runtime PM might be disabled, so power off the card manually */
 	ret = mmc_power_save_host(func->card->host);
 	if (ret < 0)
 		return ret;

 	/* Let runtime PM know the card is powered off */
 	return pm_runtime_put_sync(&func->dev);
 }

 static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
 {
 	if (enable)
 		return wl1271_sdio_power_on(wl);
 	else
 		return wl1271_sdio_power_off(wl);
 }

 static struct wl1271_if_operations sdio_ops = {
 	.read		= wl1271_sdio_raw_read,
 	.write		= wl1271_sdio_raw_write,
 	.reset		= wl1271_sdio_reset,
 	.init		= wl1271_sdio_init,
 	.power		= wl1271_sdio_set_power,
 	.dev		= wl1271_sdio_wl_to_dev,
 	.enable_irq	= wl1271_sdio_enable_interrupts,
 	.disable_irq	= wl1271_sdio_disable_interrupts,
 	.set_block_size = wl1271_sdio_set_block_size,
 };

 static int __devinit wl1271_probe(struct sdio_func *func,
 				  const struct sdio_device_id *id)
 {
 	struct ieee80211_hw *hw;
 	const struct wl12xx_platform_data *wlan_data;
 	struct wl1271 *wl;
 	int ret;

 	/* We are only able to handle the wlan function */
 	if (func->num != 0x02)
 		return -ENODEV;

 	hw = wl1271_alloc_hw();
 	if (IS_ERR(hw))
 		return PTR_ERR(hw);

 	wl = hw->priv;

 	wl->if_priv = func;
 	wl->if_ops = &sdio_ops;

 	/* Grab access to FN0 for ELP reg. */
 	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;

 	wlan_data = wl12xx_get_platform_data();
 	if (IS_ERR(wlan_data)) {
 		ret = PTR_ERR(wlan_data);
 		wl1271_error("missing wlan platform data: %d", ret);
 		goto out_free;
 	}

 	wl->irq = wlan_data->irq;
 	wl->ref_clock = wlan_data->board_ref_clock;
 	wl->tcxo_clock = wlan_data->board_tcxo_clock;

 	ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
 				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 				   DRIVER_NAME, wl);
 	if (ret < 0) {
 		wl1271_error("request_irq() failed: %d", ret);
 		goto out_free;
 	}

 	disable_irq(wl->irq);

 	ret = wl1271_init_ieee80211(wl);
 	if (ret)
 		goto out_irq;

 	ret = wl1271_register_hw(wl);
 	if (ret)
 		goto out_irq;

 	sdio_set_drvdata(func, wl);

 	/* Tell PM core that we don't need the card to be powered now */
 	pm_runtime_put_noidle(&func->dev);

 	wl1271_notice("initialized");

 	return 0;

  out_irq:
 	free_irq(wl->irq, wl);

  out_free:
 	wl1271_free_hw(wl);

 	return ret;
 }

 static void __devexit wl1271_remove(struct sdio_func *func)
 {
 	struct wl1271 *wl = sdio_get_drvdata(func);

 	/* Undo decrement done above in wl1271_probe */
 	pm_runtime_get_noresume(&func->dev);

 	wl1271_unregister_hw(wl);
 	free_irq(wl->irq, wl);
 	wl1271_free_hw(wl);
 }

 static int wl1271_suspend(struct device *dev)
 {
 	/* Tell MMC/SDIO core it's OK to power down the card
 	 * (if it isn't already), but not to remove it completely */
 	return 0;
 }

 static int wl1271_resume(struct device *dev)
 {
 	return 0;
 }

 static const struct dev_pm_ops wl1271_sdio_pm_ops = {
 	.suspend	= wl1271_suspend,
 	.resume		= wl1271_resume,
 };

 static struct sdio_driver wl1271_sdio_driver = {
 	.name		= "wl1271_sdio",
 	.id_table	= wl1271_devices,
 	.probe		= wl1271_probe,
 	.remove		= __devexit_p(wl1271_remove),
 	.drv = {
 		.pm = &wl1271_sdio_pm_ops,
 	},
 };

 static int __init wl1271_init(void)
 {
 	int ret;

 	ret = sdio_register_driver(&wl1271_sdio_driver);
 	if (ret < 0) {
 		wl1271_error("failed to register sdio driver: %d", ret);
 		goto out;
 	}

 out:
 	return ret;
 }

 static void __exit wl1271_exit(void)
 {
 	sdio_unregister_driver(&wl1271_sdio_driver);

 	wl1271_notice("unloaded");
 }

 module_init(wl1271_init);
 module_exit(wl1271_exit);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
 MODULE_FIRMWARE(WL1271_FW_NAME);
 MODULE_FIRMWARE(WL128X_FW_NAME);
 MODULE_FIRMWARE(WL127X_AP_FW_NAME);
 MODULE_FIRMWARE(WL128X_AP_FW_NAME);
	/*
	* This file is part of wl1271
	*
	* Copyright (C) 2009-2010 Nokia Corporation
	*
	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	* 02110-1301 USA
	*
	*/

	#include <linux/irq.h>
	#include <linux/module.h>
	#include <linux/crc7.h>
	#include <linux/vmalloc.h>
	#include <linux/mmc/sdio_func.h>
	#include <linux/mmc/sdio_ids.h>
	#include <linux/mmc/card.h>
	#include <linux/mmc/host.h>
	#include <linux/gpio.h>
	#include <linux/wl12xx.h>
	#include <linux/pm_runtime.h>

	#include "wl12xx.h"
	#include "wl12xx_80211.h"
	#include "io.h"

	#ifndef SDIO_VENDOR_ID_TI
	#define SDIO_VENDOR_ID_TI 0x0097
	#endif

	#ifndef SDIO_DEVICE_ID_TI_WL1271
	#define SDIO_DEVICE_ID_TI_WL1271 0x4076
	#endif

	static const struct sdio_device_id wl1271_devices[] = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	{}
	};
	MODULE_DEVICE_TABLE(sdio, wl1271_devices);

	/* The max SDIO block size is 256 when working with tx padding to SDIO block */
	#define TX_PAD_SDIO_BLK_SIZE 256

	static void wl1271_sdio_set_block_size(struct wl1271 *wl)
	{
	wl->block_size = TX_PAD_SDIO_BLK_SIZE;

	sdio_claim_host(wl->if_priv);
	sdio_set_block_size(wl->if_priv, TX_PAD_SDIO_BLK_SIZE);
	sdio_release_host(wl->if_priv);
	}

	static inline struct sdio_func wl_to_func(struct wl1271 wl)
	{
	return wl->if_priv;
	}

	static struct device wl1271_sdio_wl_to_dev(struct wl1271 wl)
	{
	return &(wl_to_func(wl)->dev);
	}

	static irqreturn_t wl1271_hardirq(int irq, void *cookie)
	{
	struct wl1271 *wl = cookie;
	unsigned long flags;

	wl1271_debug(DEBUG_IRQ, "IRQ");

	/* complete the ELP completion */
	spin_lock_irqsave(&wl->wl_lock, flags);
	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
	if (wl->elp_compl) {
	complete(wl->elp_compl);
	wl->elp_compl = NULL;
	}
	spin_unlock_irqrestore(&wl->wl_lock, flags);

	return IRQ_WAKE_THREAD;
	}

	static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
	{
	disable_irq(wl->irq);
	}

	static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
	{
	enable_irq(wl->irq);
	}

	static void wl1271_sdio_reset(struct wl1271 *wl)
	{
	}

	static void wl1271_sdio_init(struct wl1271 *wl)
	{
	}

	static void wl1271_sdio_raw_read(struct wl1271 wl, int addr, void buf,
	size_t len, bool fixed)
	{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
	wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
	addr, ((u8 *)buf)[0]);
	} else {
	if (fixed)
	ret = sdio_readsb(func, buf, addr, len);
	else
	ret = sdio_memcpy_fromio(func, buf, addr, len);

	wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
	addr, len);
	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
	}

	if (ret)
	wl1271_error("sdio read failed (%d)", ret);
	}

	static void wl1271_sdio_raw_write(struct wl1271 wl, int addr, void buf,
	size_t len, bool fixed)
	{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
	wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
	addr, ((u8 *)buf)[0]);
	} else {
	wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
	addr, len);
	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);

	if (fixed)
	ret = sdio_writesb(func, addr, buf, len);
	else
	ret = sdio_memcpy_toio(func, addr, buf, len);
	}

	if (ret)
	wl1271_error("sdio write failed (%d)", ret);
	}

	static int wl1271_sdio_power_on(struct wl1271 *wl)
	{
	struct sdio_func *func = wl_to_func(wl);
	int ret;

	/* Make sure the card will not be powered off by runtime PM */
	ret = pm_runtime_get_sync(&func->dev);
	if (ret < 0)
	goto out;

	/* Runtime PM might be disabled, so power up the card manually */
	ret = mmc_power_restore_host(func->card->host);
	if (ret < 0)
	goto out;

	sdio_claim_host(func);
	sdio_enable_func(func);

	/* Set the default block size in case it was modified */
	sdio_set_block_size(func, 0);

	out:
	return ret;
	}

	static int wl1271_sdio_power_off(struct wl1271 *wl)
	{
	struct sdio_func *func = wl_to_func(wl);
	int ret;

	sdio_disable_func(func);
	sdio_release_host(func);

	/* Runtime PM might be disabled, so power off the card manually */
	ret = mmc_power_save_host(func->card->host);
	if (ret < 0)
	return ret;

	/* Let runtime PM know the card is powered off */
	return pm_runtime_put_sync(&func->dev);
	}

	static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
	{
	if (enable)
	return wl1271_sdio_power_on(wl);
	else
	return wl1271_sdio_power_off(wl);
	}

	static struct wl1271_if_operations sdio_ops = {
	.read = wl1271_sdio_raw_read,
	.write = wl1271_sdio_raw_write,
	.reset = wl1271_sdio_reset,
	.init = wl1271_sdio_init,
	.power = wl1271_sdio_set_power,
	.dev = wl1271_sdio_wl_to_dev,
	.enable_irq = wl1271_sdio_enable_interrupts,
	.disable_irq = wl1271_sdio_disable_interrupts,
	.set_block_size = wl1271_sdio_set_block_size,
	};

	static int __devinit wl1271_probe(struct sdio_func *func,
	const struct sdio_device_id *id)
	{
	struct ieee80211_hw *hw;
	const struct wl12xx_platform_data *wlan_data;
	struct wl1271 *wl;
	int ret;

	/* We are only able to handle the wlan function */
	if (func->num != 0x02)
	return -ENODEV;

	hw = wl1271_alloc_hw();
	if (IS_ERR(hw))
	return PTR_ERR(hw);

	wl = hw->priv;

	wl->if_priv = func;
	wl->if_ops = &sdio_ops;

	/* Grab access to FN0 for ELP reg. */
	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;

	wlan_data = wl12xx_get_platform_data();
	if (IS_ERR(wlan_data)) {
	ret = PTR_ERR(wlan_data);
	wl1271_error("missing wlan platform data: %d", ret);
	goto out_free;
	}

	wl->irq = wlan_data->irq;
	wl->ref_clock = wlan_data->board_ref_clock;
	wl->tcxo_clock = wlan_data->board_tcxo_clock;

	ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
	IRQF_TRIGGER_HIGH \| IRQF_ONESHOT,
	DRIVER_NAME, wl);
	if (ret < 0) {
	wl1271_error("request_irq() failed: %d", ret);
	goto out_free;
	}

	disable_irq(wl->irq);

	ret = wl1271_init_ieee80211(wl);
	if (ret)
	goto out_irq;

	ret = wl1271_register_hw(wl);
	if (ret)
	goto out_irq;

	sdio_set_drvdata(func, wl);

	/* Tell PM core that we don't need the card to be powered now */
	pm_runtime_put_noidle(&func->dev);

	wl1271_notice("initialized");

	return 0;

	out_irq:
	free_irq(wl->irq, wl);

	out_free:
	wl1271_free_hw(wl);

	return ret;
	}

	static void __devexit wl1271_remove(struct sdio_func *func)
	{
	struct wl1271 *wl = sdio_get_drvdata(func);

	/* Undo decrement done above in wl1271_probe */
	pm_runtime_get_noresume(&func->dev);

	wl1271_unregister_hw(wl);
	free_irq(wl->irq, wl);
	wl1271_free_hw(wl);
	}

	static int wl1271_suspend(struct device *dev)
	{
	/* Tell MMC/SDIO core it's OK to power down the card
	* (if it isn't already), but not to remove it completely */
	return 0;
	}

	static int wl1271_resume(struct device *dev)
	{
	return 0;
	}

	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	.suspend = wl1271_suspend,
	.resume = wl1271_resume,
	};

	static struct sdio_driver wl1271_sdio_driver = {
	.name = "wl1271_sdio",
	.id_table = wl1271_devices,
	.probe = wl1271_probe,
	.remove = __devexit_p(wl1271_remove),
	.drv = {
	.pm = &wl1271_sdio_pm_ops,
	},
	};

	static int __init wl1271_init(void)
	{
	int ret;

	ret = sdio_register_driver(&wl1271_sdio_driver);
	if (ret < 0) {
	wl1271_error("failed to register sdio driver: %d", ret);
	goto out;
	}

	out:
	return ret;
	}

	static void __exit wl1271_exit(void)
	{
	sdio_unregister_driver(&wl1271_sdio_driver);

	wl1271_notice("unloaded");
	}

	module_init(wl1271_init);
	module_exit(wl1271_exit);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
	MODULE_FIRMWARE(WL1271_FW_NAME);
	MODULE_FIRMWARE(WL128X_FW_NAME);
	MODULE_FIRMWARE(WL127X_AP_FW_NAME);
	MODULE_FIRMWARE(WL128X_AP_FW_NAME);