mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 19:00:53 +07:00
media: lirc: implement scancode sending
This introduces a new lirc mode: scancode. Any device which can send raw IR
can now also send scancodes.
int main()
{
int mode, fd = open("/dev/lirc0", O_RDWR);
mode = LIRC_MODE_SCANCODE;
if (ioctl(fd, LIRC_SET_SEND_MODE, &mode)) {
// kernel too old or lirc does not support transmit
}
struct lirc_scancode scancode = {
.scancode = 0x1e3d,
.rc_proto = RC_PROTO_RC5,
};
write(fd, &scancode, sizeof(scancode));
close(fd);
}
The other fields of lirc_scancode must be set to 0.
Note that toggle (rc5, rc6) and repeats (nec) are not implemented. Nor is
there a method for holding down a key for a period.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young
Mauro Carvalho Chehab
parent
4e3cd001fd
commit
9b6192589b
@ -107,7 +107,8 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
|
||||
{
|
||||
struct lirc_codec *lirc;
|
||||
struct rc_dev *dev;
|
||||
unsigned int *txbuf; /* buffer with values to transmit */
|
||||
unsigned int *txbuf = NULL;
|
||||
struct ir_raw_event *raw = NULL;
|
||||
ssize_t ret = -EINVAL;
|
||||
size_t count;
|
||||
ktime_t start;
|
||||
@ -121,16 +122,50 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
|
||||
if (!lirc)
|
||||
return -EFAULT;
|
||||
|
||||
if (n < sizeof(unsigned) || n % sizeof(unsigned))
|
||||
if (lirc->send_mode == LIRC_MODE_SCANCODE) {
|
||||
struct lirc_scancode scan;
|
||||
|
||||
if (n != sizeof(scan))
|
||||
return -EINVAL;
|
||||
|
||||
count = n / sizeof(unsigned);
|
||||
if (copy_from_user(&scan, buf, sizeof(scan)))
|
||||
return -EFAULT;
|
||||
|
||||
if (scan.flags || scan.keycode || scan.timestamp)
|
||||
return -EINVAL;
|
||||
|
||||
raw = kmalloc_array(LIRCBUF_SIZE, sizeof(*raw), GFP_KERNEL);
|
||||
if (!raw)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = ir_raw_encode_scancode(scan.rc_proto, scan.scancode,
|
||||
raw, LIRCBUF_SIZE);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
count = ret;
|
||||
|
||||
txbuf = kmalloc_array(count, sizeof(unsigned int), GFP_KERNEL);
|
||||
if (!txbuf) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
for (i = 0; i < count; i++)
|
||||
/* Convert from NS to US */
|
||||
txbuf[i] = DIV_ROUND_UP(raw[i].duration, 1000);
|
||||
} else {
|
||||
if (n < sizeof(unsigned int) || n % sizeof(unsigned int))
|
||||
return -EINVAL;
|
||||
|
||||
count = n / sizeof(unsigned int);
|
||||
if (count > LIRCBUF_SIZE || count % 2 == 0)
|
||||
return -EINVAL;
|
||||
|
||||
txbuf = memdup_user(buf, n);
|
||||
if (IS_ERR(txbuf))
|
||||
return PTR_ERR(txbuf);
|
||||
}
|
||||
|
||||
dev = lirc->dev;
|
||||
if (!dev) {
|
||||
@ -156,6 +191,9 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
if (lirc->send_mode == LIRC_MODE_SCANCODE) {
|
||||
ret = n;
|
||||
} else {
|
||||
for (duration = i = 0; i < ret; i++)
|
||||
duration += txbuf[i];
|
||||
|
||||
@ -166,14 +204,17 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
|
||||
* wait for the actual IR signal to be transmitted before
|
||||
* returning.
|
||||
*/
|
||||
towait = ktime_us_delta(ktime_add_us(start, duration), ktime_get());
|
||||
towait = ktime_us_delta(ktime_add_us(start, duration),
|
||||
ktime_get());
|
||||
if (towait > 0) {
|
||||
set_current_state(TASK_INTERRUPTIBLE);
|
||||
schedule_timeout(usecs_to_jiffies(towait));
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
kfree(txbuf);
|
||||
kfree(raw);
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -202,20 +243,22 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
|
||||
|
||||
switch (cmd) {
|
||||
|
||||
/* legacy support */
|
||||
/* mode support */
|
||||
case LIRC_GET_SEND_MODE:
|
||||
if (!dev->tx_ir)
|
||||
return -ENOTTY;
|
||||
|
||||
val = LIRC_MODE_PULSE;
|
||||
val = lirc->send_mode;
|
||||
break;
|
||||
|
||||
case LIRC_SET_SEND_MODE:
|
||||
if (!dev->tx_ir)
|
||||
return -ENOTTY;
|
||||
|
||||
if (val != LIRC_MODE_PULSE)
|
||||
if (!(val == LIRC_MODE_PULSE || val == LIRC_MODE_SCANCODE))
|
||||
return -EINVAL;
|
||||
|
||||
lirc->send_mode = val;
|
||||
return 0;
|
||||
|
||||
/* TX settings */
|
||||
@ -361,7 +404,7 @@ static int ir_lirc_register(struct rc_dev *dev)
|
||||
}
|
||||
|
||||
if (dev->tx_ir) {
|
||||
features |= LIRC_CAN_SEND_PULSE;
|
||||
features |= LIRC_CAN_SEND_PULSE | LIRC_CAN_SEND_SCANCODE;
|
||||
if (dev->s_tx_mask)
|
||||
features |= LIRC_CAN_SET_TRANSMITTER_MASK;
|
||||
if (dev->s_tx_carrier)
|
||||
@ -399,6 +442,8 @@ static int ir_lirc_register(struct rc_dev *dev)
|
||||
if (rc < 0)
|
||||
goto out;
|
||||
|
||||
dev->raw->lirc.send_mode = LIRC_MODE_PULSE;
|
||||
|
||||
dev->raw->lirc.ldev = ldev;
|
||||
dev->raw->lirc.dev = dev;
|
||||
return 0;
|
||||
|
||||
@ -103,7 +103,7 @@ struct ir_raw_event_ctrl {
|
||||
u64 gap_duration;
|
||||
bool gap;
|
||||
bool send_timeout_reports;
|
||||
|
||||
u8 send_mode;
|
||||
} lirc;
|
||||
struct xmp_dec {
|
||||
int state;
|
||||
|
||||
@ -10,59 +10,7 @@
|
||||
*/
|
||||
|
||||
#include <linux/input.h>
|
||||
|
||||
/**
|
||||
* enum rc_proto - the Remote Controller protocol
|
||||
*
|
||||
* @RC_PROTO_UNKNOWN: Protocol not known
|
||||
* @RC_PROTO_OTHER: Protocol known but proprietary
|
||||
* @RC_PROTO_RC5: Philips RC5 protocol
|
||||
* @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
|
||||
* @RC_PROTO_RC5_SZ: StreamZap variant of RC5
|
||||
* @RC_PROTO_JVC: JVC protocol
|
||||
* @RC_PROTO_SONY12: Sony 12 bit protocol
|
||||
* @RC_PROTO_SONY15: Sony 15 bit protocol
|
||||
* @RC_PROTO_SONY20: Sony 20 bit protocol
|
||||
* @RC_PROTO_NEC: NEC protocol
|
||||
* @RC_PROTO_NECX: Extended NEC protocol
|
||||
* @RC_PROTO_NEC32: NEC 32 bit protocol
|
||||
* @RC_PROTO_SANYO: Sanyo protocol
|
||||
* @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
|
||||
* @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
|
||||
* @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
|
||||
* @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
|
||||
* @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
|
||||
* @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
|
||||
* @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
|
||||
* @RC_PROTO_SHARP: Sharp protocol
|
||||
* @RC_PROTO_XMP: XMP protocol
|
||||
* @RC_PROTO_CEC: CEC protocol
|
||||
*/
|
||||
enum rc_proto {
|
||||
RC_PROTO_UNKNOWN = 0,
|
||||
RC_PROTO_OTHER = 1,
|
||||
RC_PROTO_RC5 = 2,
|
||||
RC_PROTO_RC5X_20 = 3,
|
||||
RC_PROTO_RC5_SZ = 4,
|
||||
RC_PROTO_JVC = 5,
|
||||
RC_PROTO_SONY12 = 6,
|
||||
RC_PROTO_SONY15 = 7,
|
||||
RC_PROTO_SONY20 = 8,
|
||||
RC_PROTO_NEC = 9,
|
||||
RC_PROTO_NECX = 10,
|
||||
RC_PROTO_NEC32 = 11,
|
||||
RC_PROTO_SANYO = 12,
|
||||
RC_PROTO_MCIR2_KBD = 13,
|
||||
RC_PROTO_MCIR2_MSE = 14,
|
||||
RC_PROTO_RC6_0 = 15,
|
||||
RC_PROTO_RC6_6A_20 = 16,
|
||||
RC_PROTO_RC6_6A_24 = 17,
|
||||
RC_PROTO_RC6_6A_32 = 18,
|
||||
RC_PROTO_RC6_MCE = 19,
|
||||
RC_PROTO_SHARP = 20,
|
||||
RC_PROTO_XMP = 21,
|
||||
RC_PROTO_CEC = 22,
|
||||
};
|
||||
#include <uapi/linux/lirc.h>
|
||||
|
||||
#define RC_PROTO_BIT_NONE 0ULL
|
||||
#define RC_PROTO_BIT_UNKNOWN BIT_ULL(RC_PROTO_UNKNOWN)
|
||||
|
||||
@ -47,12 +47,14 @@
|
||||
#define LIRC_MODE_RAW 0x00000001
|
||||
#define LIRC_MODE_PULSE 0x00000002
|
||||
#define LIRC_MODE_MODE2 0x00000004
|
||||
#define LIRC_MODE_SCANCODE 0x00000008
|
||||
#define LIRC_MODE_LIRCCODE 0x00000010
|
||||
|
||||
|
||||
#define LIRC_CAN_SEND_RAW LIRC_MODE2SEND(LIRC_MODE_RAW)
|
||||
#define LIRC_CAN_SEND_PULSE LIRC_MODE2SEND(LIRC_MODE_PULSE)
|
||||
#define LIRC_CAN_SEND_MODE2 LIRC_MODE2SEND(LIRC_MODE_MODE2)
|
||||
#define LIRC_CAN_SEND_SCANCODE LIRC_MODE2SEND(LIRC_MODE_SCANCODE)
|
||||
#define LIRC_CAN_SEND_LIRCCODE LIRC_MODE2SEND(LIRC_MODE_LIRCCODE)
|
||||
|
||||
#define LIRC_CAN_SEND_MASK 0x0000003f
|
||||
@ -64,6 +66,7 @@
|
||||
#define LIRC_CAN_REC_RAW LIRC_MODE2REC(LIRC_MODE_RAW)
|
||||
#define LIRC_CAN_REC_PULSE LIRC_MODE2REC(LIRC_MODE_PULSE)
|
||||
#define LIRC_CAN_REC_MODE2 LIRC_MODE2REC(LIRC_MODE_MODE2)
|
||||
#define LIRC_CAN_REC_SCANCODE LIRC_MODE2REC(LIRC_MODE_SCANCODE)
|
||||
#define LIRC_CAN_REC_LIRCCODE LIRC_MODE2REC(LIRC_MODE_LIRCCODE)
|
||||
|
||||
#define LIRC_CAN_REC_MASK LIRC_MODE2REC(LIRC_CAN_SEND_MASK)
|
||||
@ -131,4 +134,83 @@
|
||||
|
||||
#define LIRC_SET_WIDEBAND_RECEIVER _IOW('i', 0x00000023, __u32)
|
||||
|
||||
/*
|
||||
* struct lirc_scancode - decoded scancode with protocol for use with
|
||||
* LIRC_MODE_SCANCODE
|
||||
*
|
||||
* @timestamp: Timestamp in nanoseconds using CLOCK_MONOTONIC when IR
|
||||
* was decoded.
|
||||
* @flags: should be 0 for transmit. When receiving scancodes,
|
||||
* LIRC_SCANCODE_FLAG_TOGGLE or LIRC_SCANCODE_FLAG_REPEAT can be set
|
||||
* depending on the protocol
|
||||
* @rc_proto: see enum rc_proto
|
||||
* @keycode: the translated keycode. Set to 0 for transmit.
|
||||
* @scancode: the scancode received or to be sent
|
||||
*/
|
||||
struct lirc_scancode {
|
||||
__u64 timestamp;
|
||||
__u16 flags;
|
||||
__u16 rc_proto;
|
||||
__u32 keycode;
|
||||
__u64 scancode;
|
||||
};
|
||||
|
||||
/* Set if the toggle bit of rc-5 or rc-6 is enabled */
|
||||
#define LIRC_SCANCODE_FLAG_TOGGLE 1
|
||||
/* Set if this is a nec or sanyo repeat */
|
||||
#define LIRC_SCANCODE_FLAG_REPEAT 2
|
||||
|
||||
/**
|
||||
* enum rc_proto - the Remote Controller protocol
|
||||
*
|
||||
* @RC_PROTO_UNKNOWN: Protocol not known
|
||||
* @RC_PROTO_OTHER: Protocol known but proprietary
|
||||
* @RC_PROTO_RC5: Philips RC5 protocol
|
||||
* @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
|
||||
* @RC_PROTO_RC5_SZ: StreamZap variant of RC5
|
||||
* @RC_PROTO_JVC: JVC protocol
|
||||
* @RC_PROTO_SONY12: Sony 12 bit protocol
|
||||
* @RC_PROTO_SONY15: Sony 15 bit protocol
|
||||
* @RC_PROTO_SONY20: Sony 20 bit protocol
|
||||
* @RC_PROTO_NEC: NEC protocol
|
||||
* @RC_PROTO_NECX: Extended NEC protocol
|
||||
* @RC_PROTO_NEC32: NEC 32 bit protocol
|
||||
* @RC_PROTO_SANYO: Sanyo protocol
|
||||
* @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
|
||||
* @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
|
||||
* @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
|
||||
* @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
|
||||
* @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
|
||||
* @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
|
||||
* @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
|
||||
* @RC_PROTO_SHARP: Sharp protocol
|
||||
* @RC_PROTO_XMP: XMP protocol
|
||||
* @RC_PROTO_CEC: CEC protocol
|
||||
*/
|
||||
enum rc_proto {
|
||||
RC_PROTO_UNKNOWN = 0,
|
||||
RC_PROTO_OTHER = 1,
|
||||
RC_PROTO_RC5 = 2,
|
||||
RC_PROTO_RC5X_20 = 3,
|
||||
RC_PROTO_RC5_SZ = 4,
|
||||
RC_PROTO_JVC = 5,
|
||||
RC_PROTO_SONY12 = 6,
|
||||
RC_PROTO_SONY15 = 7,
|
||||
RC_PROTO_SONY20 = 8,
|
||||
RC_PROTO_NEC = 9,
|
||||
RC_PROTO_NECX = 10,
|
||||
RC_PROTO_NEC32 = 11,
|
||||
RC_PROTO_SANYO = 12,
|
||||
RC_PROTO_MCIR2_KBD = 13,
|
||||
RC_PROTO_MCIR2_MSE = 14,
|
||||
RC_PROTO_RC6_0 = 15,
|
||||
RC_PROTO_RC6_6A_20 = 16,
|
||||
RC_PROTO_RC6_6A_24 = 17,
|
||||
RC_PROTO_RC6_6A_32 = 18,
|
||||
RC_PROTO_RC6_MCE = 19,
|
||||
RC_PROTO_SHARP = 20,
|
||||
RC_PROTO_XMP = 21,
|
||||
RC_PROTO_CEC = 22,
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user