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[media] mceusb: add symbolic names for commands

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And replace usage of hex values w/symbolic names wherever possible

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson 2010-10-22 14:42:54 -03:00 committed by Mauro Carvalho Chehab
parent 3459d4553b
commit 4a8839187a
1 changed files with 117 additions and 76 deletions
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193
drivers/media/IR/mceusb.c
View file

@ -46,26 +46,58 @@
"device driver"
#define DRIVER_NAME "mceusb"
#define USB_BUFLEN 32 /* USB reception buffer length */
#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
#define USB_BUFLEN 32 /* USB reception buffer length */
#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
/* MCE constants */
#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
#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_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_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_COMMAND_MASK 0xe0 /* Mask out command bits */
#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
#define MCE_COMMAND_IRDATA 0x80 /* buf & MCE_COMMAND_MASK == 0x80 -> IR data */
#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
#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_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 /* 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 */
/* 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 x*50/100 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;
}