1 // SPDX-License-Identifier: GPL-2.0-or-later
29 	/* Generic Bluetooth Type-A SDIO device */
32 	/* Generic Bluetooth Type-B SDIO device */
42 	struct sdio_func *func;  member
65 	BT_DBG("%s", data->hdev->name);  in btsdio_tx_packet()
67 	/* Prepend Type-A header */  in btsdio_tx_packet()
69 	skb->data[0] = (skb->len & 0x0000ff);  in btsdio_tx_packet()
70 	skb->data[1] = (skb->len & 0x00ff00) >> 8;  in btsdio_tx_packet()
71 	skb->data[2] = (skb->len & 0xff0000) >> 16;  in btsdio_tx_packet()
72 	skb->data[3] = hci_skb_pkt_type(skb);  in btsdio_tx_packet()
74 	err = sdio_writesb(data->func, REG_TDAT, skb->data, skb->len);  in btsdio_tx_packet()
77 		sdio_writeb(data->func, 0x01, REG_PC_WRT, NULL);  in btsdio_tx_packet()
81 	data->hdev->stat.byte_tx += skb->len;  in btsdio_tx_packet()
94 	BT_DBG("%s", data->hdev->name);  in btsdio_work()
96 	sdio_claim_host(data->func);  in btsdio_work()
98 	while ((skb = skb_dequeue(&data->txq))) {  in btsdio_work()
101 			data->hdev->stat.err_tx++;  in btsdio_work()
102 			skb_queue_head(&data->txq, skb);  in btsdio_work()
107 	sdio_release_host(data->func);  in btsdio_work()
116 	BT_DBG("%s", data->hdev->name);  in btsdio_rx_packet()
118 	err = sdio_readsb(data->func, hdr, REG_RDAT, 4);  in btsdio_rx_packet()
124 		return -EILSEQ;  in btsdio_rx_packet()
126 	skb = bt_skb_alloc(len - 4, GFP_KERNEL);  in btsdio_rx_packet()
132 		return -ENOMEM;  in btsdio_rx_packet()
135 	skb_put(skb, len - 4);  in btsdio_rx_packet()
137 	err = sdio_readsb(data->func, skb->data, REG_RDAT, len - 4);  in btsdio_rx_packet()
143 	data->hdev->stat.byte_rx += len;  in btsdio_rx_packet()
151 		err = hci_recv_frame(data->hdev, skb);  in btsdio_rx_packet()
157 		return -EINVAL;  in btsdio_rx_packet()
160 	sdio_writeb(data->func, 0x00, REG_PC_RRT, NULL);  in btsdio_rx_packet()
165 static void btsdio_interrupt(struct sdio_func *func)  in btsdio_interrupt()  argument
167 	struct btsdio_data *data = sdio_get_drvdata(func);  in btsdio_interrupt()
170 	BT_DBG("%s", data->hdev->name);  in btsdio_interrupt()
172 	intrd = sdio_readb(func, REG_INTRD, NULL);  in btsdio_interrupt()
174 		sdio_writeb(func, 0x01, REG_CL_INTRD, NULL);  in btsdio_interrupt()
177 			data->hdev->stat.err_rx++;  in btsdio_interrupt()
178 			sdio_writeb(data->func, 0x01, REG_PC_RRT, NULL);  in btsdio_interrupt()
188 	BT_DBG("%s", hdev->name);  in btsdio_open()
190 	sdio_claim_host(data->func);  in btsdio_open()
192 	err = sdio_enable_func(data->func);  in btsdio_open()
196 	err = sdio_claim_irq(data->func, btsdio_interrupt);  in btsdio_open()
198 		sdio_disable_func(data->func);  in btsdio_open()
202 	if (data->func->class == SDIO_CLASS_BT_B)  in btsdio_open()
203 		sdio_writeb(data->func, 0x00, REG_MD_SET, NULL);  in btsdio_open()
205 	sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL);  in btsdio_open()
208 	sdio_release_host(data->func);  in btsdio_open()
217 	BT_DBG("%s", hdev->name);  in btsdio_close()
219 	sdio_claim_host(data->func);  in btsdio_close()
221 	sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);  in btsdio_close()
223 	sdio_release_irq(data->func);  in btsdio_close()
224 	sdio_disable_func(data->func);  in btsdio_close()
226 	sdio_release_host(data->func);  in btsdio_close()
235 	BT_DBG("%s", hdev->name);  in btsdio_flush()
237 	skb_queue_purge(&data->txq);  in btsdio_flush()
246 	BT_DBG("%s", hdev->name);  in btsdio_send_frame()
250 		hdev->stat.cmd_tx++;  in btsdio_send_frame()
254 		hdev->stat.acl_tx++;  in btsdio_send_frame()
258 		hdev->stat.sco_tx++;  in btsdio_send_frame()
262 		return -EILSEQ;  in btsdio_send_frame()
265 	skb_queue_tail(&data->txq, skb);  in btsdio_send_frame()
267 	schedule_work(&data->work);  in btsdio_send_frame()
272 static int btsdio_probe(struct sdio_func *func,  in btsdio_probe()  argument
277 	struct sdio_func_tuple *tuple = func->tuples;  in btsdio_probe()
280 	BT_DBG("func %p id %p class 0x%04x", func, id, func->class);  in btsdio_probe()
283 		BT_DBG("code 0x%x size %d", tuple->code, tuple->size);  in btsdio_probe()
284 		tuple = tuple->next;  in btsdio_probe()
287 	/* Broadcom devices soldered onto the PCB (non-removable) use an  in btsdio_probe()
288 	 * UART connection for Bluetooth, ignore the BT SDIO interface.  in btsdio_probe()
290 	if (func->vendor == SDIO_VENDOR_ID_BROADCOM &&  in btsdio_probe()
291 	    !mmc_card_is_removable(func->card->host)) {  in btsdio_probe()
292 		switch (func->device) {  in btsdio_probe()
299 			return -ENODEV;  in btsdio_probe()
303 	data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL);  in btsdio_probe()
305 		return -ENOMEM;  in btsdio_probe()
307 	data->func = func;  in btsdio_probe()
309 	INIT_WORK(&data->work, btsdio_work);  in btsdio_probe()
311 	skb_queue_head_init(&data->txq);  in btsdio_probe()
315 		return -ENOMEM;  in btsdio_probe()
317 	hdev->bus = HCI_SDIO;  in btsdio_probe()
320 	data->hdev = hdev;  in btsdio_probe()
322 	SET_HCIDEV_DEV(hdev, &func->dev);  in btsdio_probe()
324 	hdev->open     = btsdio_open;  in btsdio_probe()
325 	hdev->close    = btsdio_close;  in btsdio_probe()
326 	hdev->flush    = btsdio_flush;  in btsdio_probe()
327 	hdev->send     = btsdio_send_frame;  in btsdio_probe()
329 	if (func->vendor == 0x0104 && func->device == 0x00c5)  in btsdio_probe()
338 	sdio_set_drvdata(func, data);  in btsdio_probe()
343 static void btsdio_remove(struct sdio_func *func)  in btsdio_remove()  argument
345 	struct btsdio_data *data = sdio_get_drvdata(func);  in btsdio_remove()
348 	BT_DBG("func %p", func);  in btsdio_remove()
353 	cancel_work_sync(&data->work);  in btsdio_remove()
354 	hdev = data->hdev;  in btsdio_remove()
356 	sdio_set_drvdata(func, NULL);  in btsdio_remove()