Commit df7e3fdf authored by Takashi Iwai's avatar Takashi Iwai
Browse files

[ALSA] Add MPU401_INFO_NO_ACK bitflag 



Added MPU401_INFO_NO_ACK bitflag to ignore the ACK check for UART
commands.  VT172x doesn't handle ACK commands, for example.

Tested-by: default avatarPavel Hofman <pavel.hofman@insite.cz>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent a01e035e

include/sound/mpu401.h

+1 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ 
#define MPU401_INFO_INTEGRATED	(1 << 2)	/* integrated h/w port */

#define MPU401_INFO_MMIO	(1 << 3)	/* MMIO access */

#define MPU401_INFO_TX_IRQ	(1 << 4)	/* independent TX irq */

#define MPU401_INFO_NO_ACK	(1 << 6)	/* No ACK cmd needed */



#define MPU401_MODE_BIT_INPUT		0

#define MPU401_MODE_BIT_OUTPUT		1

sound/drivers/mpu401/mpu401_uart.c

+1 −1
Original line number Diff line number Diff line
@@ -243,7 +243,7 @@ static int snd_mpu401_uart_cmd(struct snd_mpu401 * mpu, unsigned char cmd, 
#endif

	}

	mpu->write(mpu, cmd, MPU401C(mpu));

	if (ack) {

	if (ack && !(mpu->info_flags & MPU401_INFO_NO_ACK)) {

		ok = 0;

		timeout = 10000;

		while (!ok && timeout-- > 0) {

sound/pci/ice1712/ice1724.c

+1 −0
Original line number Diff line number Diff line
@@ -2429,6 +2429,7 @@ static int __devinit snd_vt1724_probe(struct pci_dev *pci, 
			if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ICE1712,

						       ICEREG1724(ice, MPU_CTRL),

						       (MPU401_INFO_INTEGRATED |

							MPU401_INFO_NO_ACK |

							MPU401_INFO_TX_IRQ),

						       ice->irq, 0,

						       &ice->rmidi[0])) < 0) {