Lines Matching refs:wdev

18 static void device_wakeup(struct wfx_dev *wdev)
22 	if (!wdev->pdata.gpio_wakeup)
24 	if (gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup) > 0)
27 	if (wfx_api_older_than(wdev, 1, 4)) {
28 		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
29 		if (!completion_done(&wdev->hif.ctrl_ready))
34 		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
38 		if (wait_for_completion_timeout(&wdev->hif.ctrl_ready, msecs_to_jiffies(2))) {
39 			complete(&wdev->hif.ctrl_ready);
45 			dev_err(wdev->dev, "timeout while wake up chip\n");
46 			gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0);
49 			dev_err(wdev->dev, "max wake-up retries reached\n");
55 static void device_release(struct wfx_dev *wdev)
57 	if (!wdev->pdata.gpio_wakeup)
60 	gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0);
63 static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
75 	alloc_len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, read_len + 2);
80 	if (wfx_data_read(wdev, skb->data, alloc_len))
93 		dev_err(wdev->dev, "inconsistent message length: %zu != %zu\n",
107 		WARN(wdev->hif.tx_buffers_used < release_count, "corrupted buffer counter");
108 		wdev->hif.tx_buffers_used -= release_count;
110 	_trace_hif_recv(hif, wdev->hif.tx_buffers_used);
113 		if (hif->seqnum != wdev->hif.rx_seqnum)
114 			dev_warn(wdev->dev, "wrong message sequence: %d != %d\n",
115 				 hif->seqnum, wdev->hif.rx_seqnum);
116 		wdev->hif.rx_seqnum = (hif->seqnum + 1) % (HIF_COUNTER_MAX + 1);
121 	wfx_handle_rx(wdev, skb);
122 	if (!wdev->hif.tx_buffers_used)
123 		wake_up(&wdev->hif.tx_buffers_empty);
133 static int bh_work_rx(struct wfx_dev *wdev, int max_msg, int *num_cnf)
143 		else if (try_wait_for_completion(&wdev->hif.ctrl_ready))
144 			ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, 0);
151 		piggyback = rx_helper(wdev, len, num_cnf);
155 			dev_err(wdev->dev, "unexpected piggyback value: ready bit not set: %04x\n",
159 		ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, piggyback);
160 		complete(&wdev->hif.ctrl_ready);
162 			dev_err(wdev->dev, "unexpected IRQ happened: %04x/%04x\n",
168 static void tx_helper(struct wfx_dev *wdev, struct wfx_hif_msg *hif)
177 	hif->seqnum = wdev->hif.tx_seqnum;
178 	wdev->hif.tx_seqnum = (wdev->hif.tx_seqnum + 1) % (HIF_COUNTER_MAX + 1);
181 	WARN(len > le16_to_cpu(wdev->hw_caps.size_inp_ch_buf),
183 	     len, le16_to_cpu(wdev->hw_caps.size_inp_ch_buf));
184 	len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, len);
185 	ret = wfx_data_write(wdev, data, len);
189 	wdev->hif.tx_buffers_used++;
190 	_trace_hif_send(hif, wdev->hif.tx_buffers_used);
196 static int bh_work_tx(struct wfx_dev *wdev, int max_msg)
203 		if (wdev->hif.tx_buffers_used < le16_to_cpu(wdev->hw_caps.num_inp_ch_bufs)) {
204 			if (try_wait_for_completion(&wdev->hif_cmd.ready)) {
205 				WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
206 				hif = wdev->hif_cmd.buf_send;
208 				hif = wfx_tx_queues_get(wdev);
213 		tx_helper(wdev, hif);
222 static void ack_sdio_data(struct wfx_dev *wdev)
226 	wfx_config_reg_read(wdev, &cfg_reg);
228 		dev_warn(wdev->dev, "chip reports errors: %02x\n", cfg_reg & 0xFF);
229 		wfx_config_reg_write_bits(wdev, 0xFF, 0x00);
235 	struct wfx_dev *wdev = container_of(work, struct wfx_dev, hif.bh);
240 	device_wakeup(wdev);
242 		num_tx = bh_work_tx(wdev, 32);
246 		num_rx = bh_work_rx(wdev, 32, &stats_cnf);
254 		ack_sdio_data(wdev);
255 	if (!wdev->hif.tx_buffers_used && !work_pending(work)) {
256 		device_release(wdev);
259 	_trace_bh_stats(stats_ind, stats_req, stats_cnf, wdev->hif.tx_buffers_used, release_chip);
263 void wfx_bh_request_rx(struct wfx_dev *wdev)
267 	wfx_control_reg_read(wdev, &cur);
268 	prev = atomic_xchg(&wdev->hif.ctrl_reg, cur);
269 	complete(&wdev->hif.ctrl_ready);
270 	queue_work(wdev->bh_wq, &wdev->hif.bh);
273 		dev_err(wdev->dev, "unexpected control register value: length field is 0: %04x\n",
276 		dev_err(wdev->dev, "received IRQ but previous data was not (yet) read: %04x/%04x\n",
281 void wfx_bh_request_tx(struct wfx_dev *wdev)
283 	queue_work(wdev->bh_wq, &wdev->hif.bh);
292 void wfx_bh_poll_irq(struct wfx_dev *wdev)
297 	WARN(!wdev->poll_irq, "unexpected IRQ polling can mask IRQ");
298 	flush_workqueue(wdev->bh_wq);
301 		wfx_control_reg_read(wdev, &reg);
306 			dev_err(wdev->dev, "time out while polling control register\n");
311 	wfx_bh_request_rx(wdev);
314 void wfx_bh_register(struct wfx_dev *wdev)
316 	INIT_WORK(&wdev->hif.bh, bh_work);
317 	init_completion(&wdev->hif.ctrl_ready);
318 	init_waitqueue_head(&wdev->hif.tx_buffers_empty);
321 void wfx_bh_unregister(struct wfx_dev *wdev)
323 	flush_work(&wdev->hif.bh);