1 // SPDX-License-Identifier: GPL-2.0-only
3  * Mac80211 SDIO driver for ST-Ericsson CW1200 device
5  * Copyright (c) 2010, ST-Ericsson
22 #include <linux/platform_data/net-cw1200.h>
26 MODULE_DESCRIPTION("mac80211 ST-Ericsson CW1200 SDIO driver");
60 static int cw1200_sdio_memcpy_fromio(struct hwbus_priv *self,  in cw1200_sdio_memcpy_fromio()  argument
64 	return sdio_memcpy_fromio(self->func, dst, addr, count);  in cw1200_sdio_memcpy_fromio()
67 static int cw1200_sdio_memcpy_toio(struct hwbus_priv *self,  in cw1200_sdio_memcpy_toio()  argument
71 	return sdio_memcpy_toio(self->func, addr, (void *)src, count);  in cw1200_sdio_memcpy_toio()
74 static void cw1200_sdio_lock(struct hwbus_priv *self)  in cw1200_sdio_lock()  argument
76 	sdio_claim_host(self->func);  in cw1200_sdio_lock()
79 static void cw1200_sdio_unlock(struct hwbus_priv *self)  in cw1200_sdio_unlock()  argument
81 	sdio_release_host(self->func);  in cw1200_sdio_unlock()
86 	struct hwbus_priv *self = sdio_get_drvdata(func);  in cw1200_sdio_irq_handler()  local
89 	if (self->core)  in cw1200_sdio_irq_handler()
90 		cw1200_irq_handler(self->core);  in cw1200_sdio_irq_handler()
100 	struct hwbus_priv *self = dev_id;  in cw1200_gpio_irq()  local
102 	if (self->core) {  in cw1200_gpio_irq()
103 		cw1200_sdio_lock(self);  in cw1200_gpio_irq()
104 		cw1200_irq_handler(self->core);  in cw1200_gpio_irq()
105 		cw1200_sdio_unlock(self);  in cw1200_gpio_irq()
112 static int cw1200_request_irq(struct hwbus_priv *self)  in cw1200_request_irq()  argument
117 	cccr = sdio_f0_readb(self->func, SDIO_CCCR_IENx, &ret);  in cw1200_request_irq()
125 	cccr |= BIT(self->func->num);  in cw1200_request_irq()
127 	sdio_f0_writeb(self->func, cccr, SDIO_CCCR_IENx, &ret);  in cw1200_request_irq()
131 	ret = enable_irq_wake(self->pdata->irq);  in cw1200_request_irq()
136 	ret =  request_threaded_irq(self->pdata->irq, cw1200_gpio_hardirq,  in cw1200_request_irq()
139 				    "cw1200_wlan_irq", self);  in cw1200_request_irq()
149 static int cw1200_sdio_irq_subscribe(struct hwbus_priv *self)  in cw1200_sdio_irq_subscribe()  argument
154 	sdio_claim_host(self->func);  in cw1200_sdio_irq_subscribe()
155 	if (self->pdata->irq)  in cw1200_sdio_irq_subscribe()
156 		ret = cw1200_request_irq(self);  in cw1200_sdio_irq_subscribe()
158 		ret = sdio_claim_irq(self->func, cw1200_sdio_irq_handler);  in cw1200_sdio_irq_subscribe()
160 	sdio_release_host(self->func);  in cw1200_sdio_irq_subscribe()
164 static int cw1200_sdio_irq_unsubscribe(struct hwbus_priv *self)  in cw1200_sdio_irq_unsubscribe()  argument
170 	if (self->pdata->irq) {  in cw1200_sdio_irq_unsubscribe()
171 		disable_irq_wake(self->pdata->irq);  in cw1200_sdio_irq_unsubscribe()
172 		free_irq(self->pdata->irq, self);  in cw1200_sdio_irq_unsubscribe()
174 		sdio_claim_host(self->func);  in cw1200_sdio_irq_unsubscribe()
175 		ret = sdio_release_irq(self->func);  in cw1200_sdio_irq_unsubscribe()
176 		sdio_release_host(self->func);  in cw1200_sdio_irq_unsubscribe()
183 	if (pdata->reset) {  in cw1200_sdio_off()
184 		gpio_set_value(pdata->reset, 0);  in cw1200_sdio_off()
186 		gpio_free(pdata->reset);  in cw1200_sdio_off()
189 	if (pdata->power_ctrl)  in cw1200_sdio_off()
190 		pdata->power_ctrl(pdata, false);  in cw1200_sdio_off()
191 	if (pdata->clk_ctrl)  in cw1200_sdio_off()
192 		pdata->clk_ctrl(pdata, false);  in cw1200_sdio_off()
200 	if (pdata->reset) {  in cw1200_sdio_on()
201 		gpio_request(pdata->reset, "cw1200_wlan_reset");  in cw1200_sdio_on()
202 		gpio_direction_output(pdata->reset, 0);  in cw1200_sdio_on()
204 	if (pdata->powerup) {  in cw1200_sdio_on()
205 		gpio_request(pdata->powerup, "cw1200_wlan_powerup");  in cw1200_sdio_on()
206 		gpio_direction_output(pdata->powerup, 0);  in cw1200_sdio_on()
208 	if (pdata->reset || pdata->powerup)  in cw1200_sdio_on()
212 	if (pdata->power_ctrl) {  in cw1200_sdio_on()
213 		if (pdata->power_ctrl(pdata, true)) {  in cw1200_sdio_on()
215 			return -1;  in cw1200_sdio_on()
220 	if (pdata->clk_ctrl) {  in cw1200_sdio_on()
221 		if (pdata->clk_ctrl(pdata, true)) {  in cw1200_sdio_on()
223 			return -1;  in cw1200_sdio_on()
229 	if (pdata->powerup) {  in cw1200_sdio_on()
230 		gpio_set_value(pdata->powerup, 1);  in cw1200_sdio_on()
234 	if (pdata->reset) {  in cw1200_sdio_on()
235 		gpio_set_value(pdata->reset, 1);  in cw1200_sdio_on()
241 static size_t cw1200_sdio_align_size(struct hwbus_priv *self, size_t size)  in cw1200_sdio_align_size()  argument
243 	if (self->pdata->no_nptb)  in cw1200_sdio_align_size()
246 		size = sdio_align_size(self->func, size);  in cw1200_sdio_align_size()
251 static int cw1200_sdio_pm(struct hwbus_priv *self, bool suspend)  in cw1200_sdio_pm()  argument
255 	if (self->pdata->irq)  in cw1200_sdio_pm()
256 		ret = irq_set_irq_wake(self->pdata->irq, suspend);  in cw1200_sdio_pm()
273 	struct hwbus_priv *self;  in cw1200_sdio_probe()  local
279 	if (func->num != 0x01)  in cw1200_sdio_probe()
280 		return -ENODEV;  in cw1200_sdio_probe()
282 	self = kzalloc(sizeof(*self), GFP_KERNEL);  in cw1200_sdio_probe()
283 	if (!self) {  in cw1200_sdio_probe()
285 		return -ENOMEM;  in cw1200_sdio_probe()
288 	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;  in cw1200_sdio_probe()
290 	self->pdata = global_plat_data; /* FIXME */  in cw1200_sdio_probe()
291 	self->func = func;  in cw1200_sdio_probe()
292 	sdio_set_drvdata(func, self);  in cw1200_sdio_probe()
297 	status = cw1200_sdio_irq_subscribe(self);  in cw1200_sdio_probe()
300 				   self, &func->dev, &self->core,  in cw1200_sdio_probe()
301 				   self->pdata->ref_clk,  in cw1200_sdio_probe()
302 				   self->pdata->macaddr,  in cw1200_sdio_probe()
303 				   self->pdata->sdd_file,  in cw1200_sdio_probe()
304 				   self->pdata->have_5ghz);  in cw1200_sdio_probe()
306 		cw1200_sdio_irq_unsubscribe(self);  in cw1200_sdio_probe()
311 		kfree(self);  in cw1200_sdio_probe()
322 	struct hwbus_priv *self = sdio_get_drvdata(func);  in cw1200_sdio_disconnect()  local
324 	if (self) {  in cw1200_sdio_disconnect()
325 		cw1200_sdio_irq_unsubscribe(self);  in cw1200_sdio_disconnect()
326 		if (self->core) {  in cw1200_sdio_disconnect()
327 			cw1200_core_release(self->core);  in cw1200_sdio_disconnect()
328 			self->core = NULL;  in cw1200_sdio_disconnect()
334 		kfree(self);  in cw1200_sdio_disconnect()
343 	struct hwbus_priv *self = sdio_get_drvdata(func);  in cw1200_sdio_suspend()  local
345 	if (!cw1200_can_suspend(self->core))  in cw1200_sdio_suspend()
346 		return -EAGAIN;  in cw1200_sdio_suspend()
348 	/* Notify SDIO that CW1200 will remain powered during suspend */  in cw1200_sdio_suspend()
379 /* Init Module function -> Called by insmod */
385 	/* FIXME -- this won't support multiple devices */  in cw1200_sdio_init()
389 		ret = -1;  in cw1200_sdio_init()
409 	/* FIXME -- this won't support multiple devices */  in cw1200_sdio_exit()