23 #include <linux/mfd/ipaq-micro.h>
31 static void ipaq_micro_trigger_tx(struct ipaq_micro *micro)  in ipaq_micro_trigger_tx()  argument
33 	struct ipaq_micro_txdev *tx = &micro->tx;  in ipaq_micro_trigger_tx()
34 	struct ipaq_micro_msg *msg = micro->msg;  in ipaq_micro_trigger_tx()
55 	val = readl(micro->base + UTCR3);  in ipaq_micro_trigger_tx()
57 	writel(val, micro->base + UTCR3);  in ipaq_micro_trigger_tx()
60 int ipaq_micro_tx_msg(struct ipaq_micro *micro, struct ipaq_micro_msg *msg)  in ipaq_micro_tx_msg()  argument
64 	dev_dbg(micro->dev, "TX msg: %02x, %d bytes\n", msg->id, msg->tx_len);  in ipaq_micro_tx_msg()
66 	spin_lock_irqsave(&micro->lock, flags);  in ipaq_micro_tx_msg()
67 	if (micro->msg) {  in ipaq_micro_tx_msg()
68 		list_add_tail(&msg->node, &micro->queue);  in ipaq_micro_tx_msg()
69 		spin_unlock_irqrestore(&micro->lock, flags);  in ipaq_micro_tx_msg()
72 	micro->msg = msg;  in ipaq_micro_tx_msg()
73 	ipaq_micro_trigger_tx(micro);  in ipaq_micro_tx_msg()
74 	spin_unlock_irqrestore(&micro->lock, flags);  in ipaq_micro_tx_msg()
79 static void micro_rx_msg(struct ipaq_micro *micro, u8 id, int len, u8 *data)  in micro_rx_msg()  argument
81 	dev_dbg(micro->dev, "RX msg: %02x, %d bytes\n", id, len);  in micro_rx_msg()
83 	spin_lock(&micro->lock);  in micro_rx_msg()
93 		if (micro->msg && micro->msg->id == id) {  in micro_rx_msg()
94 			struct ipaq_micro_msg *msg = micro->msg;  in micro_rx_msg()
98 			complete(&micro->msg->ack);  in micro_rx_msg()
99 			if (!list_empty(&micro->queue)) {  in micro_rx_msg()
100 				micro->msg = list_entry(micro->queue.next,  in micro_rx_msg()
103 				list_del_init(&micro->msg->node);  in micro_rx_msg()
104 				ipaq_micro_trigger_tx(micro);  in micro_rx_msg()
106 				micro->msg = NULL;  in micro_rx_msg()
107 			dev_dbg(micro->dev, "OK RX message 0x%02x\n", id);  in micro_rx_msg()
109 			dev_err(micro->dev,  in micro_rx_msg()
111 			if (!micro->msg)  in micro_rx_msg()
112 				dev_info(micro->dev, "no message queued\n");  in micro_rx_msg()
114 				dev_info(micro->dev, "expected message %02x\n",  in micro_rx_msg()
115 					 micro->msg->id);  in micro_rx_msg()
119 		if (micro->key)  in micro_rx_msg()
120 			micro->key(micro->key_data, len, data);  in micro_rx_msg()
122 			dev_dbg(micro->dev, "key message ignored, no handle\n");  in micro_rx_msg()
125 		if (micro->ts)  in micro_rx_msg()
126 			micro->ts(micro->ts_data, len, data);  in micro_rx_msg()
128 			dev_dbg(micro->dev, "touchscreen message ignored, no handle\n");  in micro_rx_msg()
131 		dev_err(micro->dev,  in micro_rx_msg()
134 	spin_unlock(&micro->lock);  in micro_rx_msg()
137 static void micro_process_char(struct ipaq_micro *micro, u8 ch)  in micro_process_char()  argument
139 	struct ipaq_micro_rxdev *rx = &micro->rx;  in micro_process_char()
161 			micro_rx_msg(micro, rx->id, rx->len, rx->buf);  in micro_process_char()
167 static void micro_rx_chars(struct ipaq_micro *micro)  in micro_rx_chars()  argument
171 	while ((status = readl(micro->base + UTSR1)) & UTSR1_RNE) {  in micro_rx_chars()
172 		ch = readl(micro->base + UTDR);  in micro_rx_chars()
174 			dev_err(micro->dev, "rx: parity error\n");  in micro_rx_chars()
176 			dev_err(micro->dev, "rx: framing error\n");  in micro_rx_chars()
178 			dev_err(micro->dev, "rx: overrun error\n");  in micro_rx_chars()
179 		micro_process_char(micro, ch);  in micro_rx_chars()
183 static void ipaq_micro_get_version(struct ipaq_micro *micro)  in ipaq_micro_get_version()  argument
189 	ipaq_micro_tx_msg_sync(micro, &msg);  in ipaq_micro_get_version()
191 		memcpy(micro->version, msg.rx_data, 4);  in ipaq_micro_get_version()
192 		micro->version[4] = '\0';  in ipaq_micro_get_version()
194 		memcpy(micro->version, msg.rx_data, 4);  in ipaq_micro_get_version()
195 		micro->version[4] = '\0';  in ipaq_micro_get_version()
198 		dev_err(micro->dev,  in ipaq_micro_get_version()
203 static void ipaq_micro_eeprom_read(struct ipaq_micro *micro,  in ipaq_micro_eeprom_read()  argument
215 		ipaq_micro_tx_msg_sync(micro, &msg);  in ipaq_micro_eeprom_read()
235 static void __init ipaq_micro_eeprom_dump(struct ipaq_micro *micro)  in ipaq_micro_eeprom_dump()  argument
240 	ipaq_micro_eeprom_read(micro, 0, 128, dump);  in ipaq_micro_eeprom_dump()
243 		dev_info(micro->dev, "HW version %s\n", str);  in ipaq_micro_eeprom_dump()
248 		dev_info(micro->dev, "serial number: %s\n", str);  in ipaq_micro_eeprom_dump()
255 		dev_info(micro->dev, "module ID: %s\n", str);  in ipaq_micro_eeprom_dump()
260 		dev_info(micro->dev, "product revision: %s\n", str);  in ipaq_micro_eeprom_dump()
263 	dev_info(micro->dev, "product ID: %u\n", ipaq_micro_to_u16(dump+80));  in ipaq_micro_eeprom_dump()
264 	dev_info(micro->dev, "frame rate: %u fps\n",  in ipaq_micro_eeprom_dump()
266 	dev_info(micro->dev, "page mode: %u\n", ipaq_micro_to_u16(dump+84));  in ipaq_micro_eeprom_dump()
267 	dev_info(micro->dev, "country ID: %u\n", ipaq_micro_to_u16(dump+86));  in ipaq_micro_eeprom_dump()
268 	dev_info(micro->dev, "color display: %s\n",  in ipaq_micro_eeprom_dump()
270 	dev_info(micro->dev, "ROM size: %u MiB\n", ipaq_micro_to_u16(dump+90));  in ipaq_micro_eeprom_dump()
271 	dev_info(micro->dev, "RAM size: %u KiB\n", ipaq_micro_to_u16(dump+92));  in ipaq_micro_eeprom_dump()
272 	dev_info(micro->dev, "screen: %u x %u\n",  in ipaq_micro_eeprom_dump()
276 static void micro_tx_chars(struct ipaq_micro *micro)  in micro_tx_chars()  argument
278 	struct ipaq_micro_txdev *tx = &micro->tx;  in micro_tx_chars()
282 	       (readl(micro->base + UTSR1) & UTSR1_TNF)) {  in micro_tx_chars()
283 		writel(tx->buf[tx->index], micro->base + UTDR);  in micro_tx_chars()
288 	val = readl(micro->base + UTCR3);  in micro_tx_chars()
290 	writel(val, micro->base + UTCR3);  in micro_tx_chars()
293 static void micro_reset_comm(struct ipaq_micro *micro)  in micro_reset_comm()  argument
295 	struct ipaq_micro_rxdev *rx = &micro->rx;  in micro_reset_comm()
298 	if (micro->msg)  in micro_reset_comm()
299 		complete(&micro->msg->ack);  in micro_reset_comm()
305 	writel(0x01, micro->sdlc + 0x0); /* Select UART mode */  in micro_reset_comm()
308 	writel(0x0, micro->base + UTCR3);  in micro_reset_comm()
311 	writel(UTCR0_8BitData | UTCR0_1StpBit, micro->base + UTCR0);  in micro_reset_comm()
314 	writel(0x0, micro->base + UTCR1);  in micro_reset_comm()
315 	writel(0x1, micro->base + UTCR2);  in micro_reset_comm()
318 	writel(0xff, micro->base + UTSR0);  in micro_reset_comm()
321 	writel(UTCR3_TXE | UTCR3_RXE | UTCR3_RIE, micro->base + UTCR3);  in micro_reset_comm()
322 	val = readl(micro->base + UTCR3);  in micro_reset_comm()
324 	writel(val, micro->base + UTCR3);  in micro_reset_comm()
329 	struct ipaq_micro *micro = dev_id;  in micro_serial_isr()  local
330 	struct ipaq_micro_txdev *tx = &micro->tx;  in micro_serial_isr()
333 	status = readl(micro->base + UTSR0);  in micro_serial_isr()
338 				writel(UTSR0_RID, micro->base + UTSR0);  in micro_serial_isr()
339 			micro_rx_chars(micro);  in micro_serial_isr()
345 			       micro->base + UTSR0);  in micro_serial_isr()
348 			micro_tx_chars(micro);  in micro_serial_isr()
350 		status = readl(micro->base + UTSR0);  in micro_serial_isr()
359 	{ .name = "ipaq-micro-backlight", },
360 	{ .name = "ipaq-micro-battery", },
361 	{ .name = "ipaq-micro-keys", },
362 	{ .name = "ipaq-micro-ts", },
363 	{ .name = "ipaq-micro-leds", },
368 	struct ipaq_micro *micro = dev_get_drvdata(dev);  in micro_resume()  local
370 	micro_reset_comm(micro);  in micro_resume()
378 	struct ipaq_micro *micro;  in micro_probe()  local
382 	micro = devm_kzalloc(&pdev->dev, sizeof(*micro), GFP_KERNEL);  in micro_probe()
383 	if (!micro)  in micro_probe()
386 	micro->dev = &pdev->dev;  in micro_probe()
388 	micro->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);  in micro_probe()
389 	if (IS_ERR(micro->base))  in micro_probe()
390 		return PTR_ERR(micro->base);  in micro_probe()
392 	micro->sdlc = devm_platform_ioremap_resource(pdev, 1);  in micro_probe()
393 	if (IS_ERR(micro->sdlc))  in micro_probe()
394 		return PTR_ERR(micro->sdlc);  in micro_probe()
396 	micro_reset_comm(micro);  in micro_probe()
402 			       IRQF_SHARED, "ipaq-micro",  in micro_probe()
403 			       micro);  in micro_probe()
410 	spin_lock_init(&micro->lock);  in micro_probe()
411 	INIT_LIST_HEAD(&micro->queue);  in micro_probe()
412 	platform_set_drvdata(pdev, micro);  in micro_probe()
422 	ipaq_micro_get_version(micro);  in micro_probe()
423 	dev_info(&pdev->dev, "Atmel micro ASIC version %s\n", micro->version);  in micro_probe()
424 	ipaq_micro_eeprom_dump(micro);  in micro_probe()
435 		.name	= "ipaq-h3xxx-micro",