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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/sound/mpu401.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/sound/mpu401.h')
-rw-r--r--include/sound/mpu401.h123
1 files changed, 123 insertions, 0 deletions
diff --git a/include/sound/mpu401.h b/include/sound/mpu401.h
new file mode 100644
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--- /dev/null
+++ b/include/sound/mpu401.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __SOUND_MPU401_H
+#define __SOUND_MPU401_H
+
+/*
+ * Header file for MPU-401 and compatible cards
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <sound/rawmidi.h>
+#include <linux/interrupt.h>
+
+#define MPU401_HW_MPU401 1 /* native MPU401 */
+#define MPU401_HW_SB 2 /* SoundBlaster MPU-401 UART */
+#define MPU401_HW_ES1688 3 /* AudioDrive ES1688 MPU-401 UART */
+#define MPU401_HW_OPL3SA2 4 /* Yamaha OPL3-SA2 */
+#define MPU401_HW_SONICVIBES 5 /* S3 SonicVibes */
+#define MPU401_HW_CS4232 6 /* CS4232 */
+#define MPU401_HW_ES18XX 7 /* AudioDrive ES18XX MPU-401 UART */
+#define MPU401_HW_FM801 8 /* ForteMedia FM801 */
+#define MPU401_HW_TRID4DWAVE 9 /* Trident 4DWave */
+#define MPU401_HW_AZT2320 10 /* Aztech AZT2320 */
+#define MPU401_HW_ALS100 11 /* Avance Logic ALS100 */
+#define MPU401_HW_ICE1712 12 /* Envy24 */
+#define MPU401_HW_VIA686A 13 /* VIA 82C686A */
+#define MPU401_HW_YMFPCI 14 /* YMF DS-XG PCI */
+#define MPU401_HW_CMIPCI 15 /* CMIPCI MPU-401 UART */
+#define MPU401_HW_ALS4000 16 /* Avance Logic ALS4000 */
+#define MPU401_HW_INTEL8X0 17 /* Intel8x0 driver */
+#define MPU401_HW_PC98II 18 /* Roland PC98II */
+#define MPU401_HW_AUREAL 19 /* Aureal Vortex */
+
+#define MPU401_INFO_INPUT (1 << 0) /* input stream */
+#define MPU401_INFO_OUTPUT (1 << 1) /* output stream */
+#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_IRQ_HOOK (1 << 5) /* mpu401 irq handler is called
+ from driver irq handler */
+#define MPU401_INFO_NO_ACK (1 << 6) /* No ACK cmd needed */
+#define MPU401_INFO_USE_TIMER (1 << 15) /* internal */
+
+#define MPU401_MODE_BIT_INPUT 0
+#define MPU401_MODE_BIT_OUTPUT 1
+#define MPU401_MODE_BIT_INPUT_TRIGGER 2
+#define MPU401_MODE_BIT_OUTPUT_TRIGGER 3
+
+#define MPU401_MODE_INPUT (1<<MPU401_MODE_BIT_INPUT)
+#define MPU401_MODE_OUTPUT (1<<MPU401_MODE_BIT_OUTPUT)
+#define MPU401_MODE_INPUT_TRIGGER (1<<MPU401_MODE_BIT_INPUT_TRIGGER)
+#define MPU401_MODE_OUTPUT_TRIGGER (1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)
+
+#define MPU401_MODE_INPUT_TIMER (1<<0)
+#define MPU401_MODE_OUTPUT_TIMER (1<<1)
+
+struct snd_mpu401 {
+ struct snd_rawmidi *rmidi;
+
+ unsigned short hardware; /* MPU401_HW_XXXX */
+ unsigned int info_flags; /* MPU401_INFO_XXX */
+ unsigned long port; /* base port of MPU-401 chip */
+ unsigned long cport; /* port + 1 (usually) */
+ struct resource *res; /* port resource */
+ int irq; /* IRQ number of MPU-401 chip */
+
+ unsigned long mode; /* MPU401_MODE_XXXX */
+ int timer_invoked;
+
+ int (*open_input) (struct snd_mpu401 * mpu);
+ void (*close_input) (struct snd_mpu401 * mpu);
+ int (*open_output) (struct snd_mpu401 * mpu);
+ void (*close_output) (struct snd_mpu401 * mpu);
+ void *private_data;
+
+ struct snd_rawmidi_substream *substream_input;
+ struct snd_rawmidi_substream *substream_output;
+
+ spinlock_t input_lock;
+ spinlock_t output_lock;
+ spinlock_t timer_lock;
+
+ struct timer_list timer;
+
+ void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
+ unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
+};
+
+/* I/O ports */
+
+#define MPU401C(mpu) (mpu)->cport
+#define MPU401D(mpu) (mpu)->port
+
+/*
+ * control register bits
+ */
+/* read MPU401C() */
+#define MPU401_RX_EMPTY 0x80
+#define MPU401_TX_FULL 0x40
+
+/* write MPU401C() */
+#define MPU401_RESET 0xff
+#define MPU401_ENTER_UART 0x3f
+
+/* read MPU401D() */
+#define MPU401_ACK 0xfe
+
+
+/*
+
+ */
+
+irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
+irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
+
+int snd_mpu401_uart_new(struct snd_card *card,
+ int device,
+ unsigned short hardware,
+ unsigned long port,
+ unsigned int info_flags,
+ int irq,
+ struct snd_rawmidi ** rrawmidi);
+
+#endif /* __SOUND_MPU401_H */