[media] mceusb: add symbolic names for commands (4a883918) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/media/IR/mceusb.c

+117 −76

Original line number	Diff line number	Diff line
		@@ -55,17 +55,49 @@
		#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
		#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
		#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
		#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
		#define MCE_CONTROL_HEADER 0x9f /* MCE status header */
		#define MCE_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
		#define MCE_IRDATA_TRAILER 0x80 /* End of IR data */
		#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
		#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
		#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
		#define MCE_DEFAULT_TX_MASK 0x03 /* Vals: TX1=0x01, TX2=0x02, ALL=0x03 */
		#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
		#define MCE_PULSE_MASK 0x7f /* Pulse mask */
		#define MCE_MAX_PULSE_LENGTH 0x7f /* Longest transmittable pulse symbol */

		#define MCE_HW_CMD_HEADER 0xff /* MCE hardware command header */
		#define MCE_COMMAND_HEADER 0x9f /* MCE command header */
		#define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */
		#define MCE_COMMAND_NULL 0x00 /* These show up various places... */
		/* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER,
		* then we're looking at a raw IR data sample */
		#define MCE_COMMAND_IRDATA 0x80
		#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
		#define MCE_COMMAND_IRDATA 0x80 /* buf & MCE_COMMAND_MASK == 0x80 -> IR data */

		/* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */
		#define MCE_CMD_PING 0x03 /* Ping device */
		#define MCE_CMD_UNKNOWN 0x04 /* Unknown */
		#define MCE_CMD_UNKNOWN2 0x05 /* Unknown */
		#define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */
		#define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */
		#define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */
		#define MCE_CMD_UNKNOWN3 0x09 /* Unknown */
		#define MCE_CMD_UNKNOWN4 0x0a /* Unknown */
		#define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */
		#define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */
		#define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */
		#define MCE_CMD_UNKNOWN5 0x0e /* Unknown */
		#define MCE_CMD_UNKNOWN6 0x0f /* Unknown */
		#define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */
		#define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */
		#define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */
		#define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */
		#define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */
		#define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */
		#define MCE_CMD_UNKNOWN7 0x18 /* Unknown */
		#define MCE_CMD_UNKNOWN8 0x19 /* Unknown */
		#define MCE_CMD_UNKNOWN9 0x1b /* Unknown */
		#define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */
		#define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */


		/* module parameters */
		@@ -336,20 +368,24 @@ struct mceusb_dev {
		* - SET_RX_TIMEOUT sets the receiver timeout
		* - SET_RX_SENSOR sets which receiver sensor to use
		*/
		static char DEVICE_RESET[] = {0x00, 0xff, 0xaa};
		static char GET_REVISION[] = {0xff, 0x0b};
		static char GET_UNKNOWN[] = {0xff, 0x18};
		static char GET_UNKNOWN2[] = {MCE_CONTROL_HEADER, 0x05};
		static char GET_CARRIER_FREQ[] = {MCE_CONTROL_HEADER, 0x07};
		static char GET_RX_TIMEOUT[] = {MCE_CONTROL_HEADER, 0x0d};
		static char GET_TX_BITMASK[] = {MCE_CONTROL_HEADER, 0x13};
		static char GET_RX_SENSOR[] = {MCE_CONTROL_HEADER, 0x15};
		static char DEVICE_RESET[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER,
		MCE_CMD_DEVICE_RESET};
		static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION};
		static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7};
		static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2};
		static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER};
		static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT};
		static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK};
		static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR};
		/* sub in desired values in lower byte or bytes for full command */
		/* FIXME: make use of these for transmit.
		static char SET_CARRIER_FREQ[] = {MCE_CONTROL_HEADER, 0x06, 0x00, 0x00};
		static char SET_TX_BITMASK[] = {MCE_CONTROL_HEADER, 0x08, 0x00};
		static char SET_RX_TIMEOUT[] = {MCE_CONTROL_HEADER, 0x0c, 0x00, 0x00};
		static char SET_RX_SENSOR[] = {MCE_CONTROL_HEADER, 0x14, 0x00};
		static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER,
		MCE_CMD_S_CARRIER, 0x00, 0x00};
		static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00};
		static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER,
		MCE_CMD_S_TIMEOUT, 0x00, 0x00};
		static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER,
		MCE_CMD_S_RXSENSOR, 0x00};
		*/

		static int mceusb_cmdsize(u8 cmd, u8 subcmd)
		@@ -357,26 +393,26 @@ static int mceusb_cmdsize(u8 cmd, u8 subcmd)
		int datasize = 0;

		switch (cmd) {
		case 0x00:
		if (subcmd == 0xff)
		case MCE_COMMAND_NULL:
		if (subcmd == MCE_HW_CMD_HEADER)
		datasize = 1;
		break;
		case 0xff:
		case MCE_HW_CMD_HEADER:
		switch (subcmd) {
		case 0x0b:
		case MCE_CMD_G_REVISION:
		datasize = 2;
		break;
		}
		case MCE_CONTROL_HEADER:
		case MCE_COMMAND_HEADER:
		switch (subcmd) {
		case 0x04:
		case 0x06:
		case 0x0c:
		case 0x15:
		case MCE_CMD_UNKNOWN:
		case MCE_CMD_S_CARRIER:
		case MCE_CMD_S_TIMEOUT:
		case MCE_CMD_G_RXSENSOR:
		datasize = 2;
		break;
		case 0x08:
		case 0x14:
		case MCE_CMD_S_TXMASK:
		case MCE_CMD_S_RXSENSOR:
		datasize = 1;
		break;
		}
		@@ -402,7 +438,7 @@ static void mceusb_dev_printdata(struct mceusb_dev ir, char buf,
		return;

		for (i = 0; i < len && i < USB_BUFLEN; i++)
		snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
		snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xff);

		dev_info(dev, "%sx data: %s (length=%d)\n",
		(out ? "t" : "r"), codes, len);
		@@ -418,16 +454,17 @@ static void mceusb_dev_printdata(struct mceusb_dev ir, char buf,
		data2 = buf[idx + 3] & 0xff;

		switch (cmd) {
		case 0x00:
		if (subcmd == 0xff && data1 == 0xaa)
		case MCE_COMMAND_NULL:
		if ((subcmd == MCE_HW_CMD_HEADER) &&
		(data1 == MCE_CMD_DEVICE_RESET))
		dev_info(dev, "Device reset requested\n");
		else
		dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
		cmd, subcmd);
		break;
		case 0xff:
		case MCE_HW_CMD_HEADER:
		switch (subcmd) {
		case 0x0b:
		case MCE_CMD_G_REVISION:
		if (len == 2)
		dev_info(dev, "Get hw/sw rev?\n");
		else
		@@ -435,68 +472,68 @@ static void mceusb_dev_printdata(struct mceusb_dev ir, char buf,
		"0x%02x 0x%02x\n", data1, data2,
		buf[idx + 4], buf[idx + 5]);
		break;
		case 0xaa:
		case MCE_CMD_DEVICE_RESET:
		dev_info(dev, "Device reset requested\n");
		break;
		case 0xfe:
		case MCE_RSP_CMD_INVALID:
		dev_info(dev, "Previous command not supported\n");
		break;
		case 0x18:
		case 0x1b:
		case MCE_CMD_UNKNOWN7:
		case MCE_CMD_UNKNOWN9:
		default:
		dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
		cmd, subcmd);
		break;
		}
		break;
		case MCE_CONTROL_HEADER:
		case MCE_COMMAND_HEADER:
		switch (subcmd) {
		case 0x03:
		case MCE_CMD_PING:
		dev_info(dev, "Ping\n");
		break;
		case 0x04:
		case MCE_CMD_UNKNOWN:
		dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
		data1, data2);
		break;
		case 0x06:
		case MCE_CMD_S_CARRIER:
		dev_info(dev, "%s carrier mode and freq of "
		"0x%02x 0x%02x\n", inout, data1, data2);
		break;
		case 0x07:
		case MCE_CMD_G_CARRIER:
		dev_info(dev, "Get carrier mode and freq\n");
		break;
		case 0x08:
		case MCE_CMD_S_TXMASK:
		dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
		inout, data1);
		break;
		case 0x0c:
		case MCE_CMD_S_TIMEOUT:
		/* value is in units of 50us, so x50/100 or x/2 ms /
		dev_info(dev, "%s receive timeout of %d ms\n",
		inout, ((data1 << 8) \| data2) / 2);
		break;
		case 0x0d:
		case MCE_CMD_G_TIMEOUT:
		dev_info(dev, "Get receive timeout\n");
		break;
		case 0x13:
		case MCE_CMD_G_TXMASK:
		dev_info(dev, "Get transmit blaster mask\n");
		break;
		case 0x14:
		case MCE_CMD_S_RXSENSOR:
		dev_info(dev, "%s %s-range receive sensor in use\n",
		inout, data1 == 0x02 ? "short" : "long");
		break;
		case 0x15:
		case MCE_CMD_G_RXSENSOR:
		if (len == 2)
		dev_info(dev, "Get receive sensor\n");
		else
		dev_info(dev, "Received pulse count is %d\n",
		((data1 << 8) \| data2));
		break;
		case 0xfe:
		case MCE_RSP_CMD_INVALID:
		dev_info(dev, "Error! Hardware is likely wedged...\n");
		break;
		case 0x05:
		case 0x09:
		case 0x0f:
		case MCE_CMD_UNKNOWN2:
		case MCE_CMD_UNKNOWN3:
		case MCE_CMD_UNKNOWN5:
		default:
		dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
		cmd, subcmd);
		@@ -613,8 +650,8 @@ static int mceusb_tx_ir(void priv, int txbuf, u32 n)
		return -ENOMEM;

		/* MCE tx init header */
		cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
		cmdbuf[cmdcount++] = 0x08;
		cmdbuf[cmdcount++] = MCE_COMMAND_HEADER;
		cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK;
		cmdbuf[cmdcount++] = ir->tx_mask;

		/* Generate mce packet data */
		@@ -628,7 +665,7 @@ static int mceusb_tx_ir(void priv, int txbuf, u32 n)
		if ((cmdcount < MCE_CMDBUF_SIZE) &&
		(cmdcount - MCE_TX_HEADER_LENGTH) %
		MCE_CODE_LENGTH == 0)
		cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
		cmdbuf[cmdcount++] = MCE_IRDATA_HEADER;

		/* Insert mce packet data */
		if (cmdcount < MCE_CMDBUF_SIZE)
		@@ -647,7 +684,8 @@ static int mceusb_tx_ir(void priv, int txbuf, u32 n)

		/* Fix packet length in last header */
		cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
		0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
		MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) %
		MCE_CODE_LENGTH - 1;

		/* Check if we have room for the empty packet at the end */
		if (cmdcount >= MCE_CMDBUF_SIZE) {
		@@ -656,7 +694,7 @@ static int mceusb_tx_ir(void priv, int txbuf, u32 n)
		}

		/* All mce commands end with an empty packet (0x80) */
		cmdbuf[cmdcount++] = 0x80;
		cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER;

		/* Transmit the command to the mce device */
		mce_async_out(ir, cmdbuf, cmdcount);
		@@ -685,7 +723,8 @@ static int mceusb_set_tx_mask(void *priv, u32 mask)
		struct mceusb_dev *ir = priv;

		if (ir->flags.tx_mask_inverted)
		ir->tx_mask = (mask != 0x03 ? mask ^ 0x03 : mask) << 1;
		ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ?
		mask ^ MCE_DEFAULT_TX_MASK : mask) << 1;
		else
		ir->tx_mask = mask;

		@@ -698,7 +737,8 @@ static int mceusb_set_tx_carrier(void *priv, u32 carrier)
		struct mceusb_dev *ir = priv;
		int clk = 10000000;
		int prescaler = 0, divisor = 0;
		unsigned char cmdbuf[4] = { MCE_CONTROL_HEADER, 0x06, 0x00, 0x00 };
		unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER,
		MCE_CMD_S_CARRIER, 0x00, 0x00 };

		/* Carrier has changed */
		if (ir->carrier != carrier) {
		@@ -706,7 +746,7 @@ static int mceusb_set_tx_carrier(void *priv, u32 carrier)
		if (carrier == 0) {
		ir->carrier = carrier;
		cmdbuf[2] = 0x01;
		cmdbuf[3] = 0x80;
		cmdbuf[3] = MCE_IRDATA_TRAILER;
		dev_dbg(ir->dev, "%s: disabling carrier "
		"modulation\n", __func__);
		mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
		@@ -715,7 +755,7 @@ static int mceusb_set_tx_carrier(void *priv, u32 carrier)

		for (prescaler = 0; prescaler < 4; ++prescaler) {
		divisor = (clk >> (2 * prescaler)) / carrier;
		if (divisor <= 0xFF) {
		if (divisor <= 0xff) {
		ir->carrier = carrier;
		cmdbuf[2] = prescaler;
		cmdbuf[3] = divisor;
		@@ -783,8 +823,9 @@ static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
		/* decode mce packets of the form (84),AA,BB,CC,DD */
		/* IR data packets can span USB messages - rem */
		ir->cmd = ir->buf_in[i];
		if ((ir->cmd == MCE_CONTROL_HEADER) \|\|
		((ir->cmd & MCE_COMMAND_MASK) != MCE_COMMAND_IRDATA)) {
		if ((ir->cmd == MCE_COMMAND_HEADER) \|\|
		((ir->cmd & MCE_COMMAND_MASK) !=
		MCE_COMMAND_IRDATA)) {
		ir->parser_state = SUBCMD;
		continue;
		}