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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-14 18:01:46 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-14 18:01:46 -0800
commit4e4510fec4af08ead21f6934c1410af1f19a8cad (patch)
tree2bafab4f7cc2cdf2983186b24140f6303d4dfc8c /sound/oss/uart401.c
parent4008e6a9bcee2f3b61bb11951de0fb0ed764cb91 (diff)
parent7087cb8fad5e19113d82f47f351fc6b338948d5f (diff)
downloadtalos-op-linux-4e4510fec4af08ead21f6934c1410af1f19a8cad.tar.gz
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Merge tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "There are no big surprising changes in this cycle, yet not too boring, either. The biggest change from diffstat POV is the removal of the legacy OSS driver codes that have been already disabled for a long time. This will bring a few trivial merge conflicts. As new features in ASoC side, there are two things: a new AC97 bus implementation and AMD Stony platform support. Both include the relevant changes shared with other subsystems, e.g. AC97 MFD changes and DRM AMD changes. Some other highlighted topics are: - A bunch of USB-audio drivers got the hardening against the malicious device accesses with a new helper code for endpoint sanity check - Lots of cleanups for ASoC Intel platform code, including support for their open source audio firmware - Continued ASoC core componentization works - Support for scaling MCLK with sample rate in ASoC simple-card - Stabler PCM hot-unplug capability, especially for ASoC usages" * tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (302 commits) Documentation: sound: hd-audio: notes.rst ASoC: bcm2835: Support left/right justified and DSP modes ASoC: bcm2835: Enforce full symmetry ASoC: bcm2835: Support additional samplerates up to 384kHz ASoC: bcm2835: Add support for TDM modes ASoC: add mclk-fs support to audio graph card ASoC: add mclk-fs to audio graph card binding ASoC: rt5514: work around link error ASoC: rt5514: mark PM functions as __maybe_unused ASoC: rt5663: Check the JD status in the button pushing ASoC: amd: Modified DMA transfer Mechanism for Playback ASoC: rt5645: Wait for 400msec before concluding on value of RT5645_VENDOR_ID2 ASoC: sun4i-codec: fixed 32bit audio capture support for H3/H2+ ASoC: da7213: add support for DSP modes ASoC: sun8i-codec: Add a comment on the LRCK inversion ASoC: sun8i-codec: Set the BCLK divider ASoC: rt5663: Delay and retry reading rt5663 ID register ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds ASoC: cs42l56: Fix reset GPIO name in example DT binding ASoC: rt5514-spi: check irq status to schedule data copy in resume function ...
Diffstat (limited to 'sound/oss/uart401.c')
-rw-r--r--sound/oss/uart401.c477
1 files changed, 0 insertions, 477 deletions
diff --git a/sound/oss/uart401.c b/sound/oss/uart401.c
deleted file mode 100644
index 83dcc85b8688..000000000000
--- a/sound/oss/uart401.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/*
- * sound/oss/uart401.c
- *
- * MPU-401 UART driver (formerly uart401_midi.c)
- *
- *
- * Copyright (C) by Hannu Savolainen 1993-1997
- *
- * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
- * Version 2 (June 1991). See the "COPYING" file distributed with this software
- * for more info.
- *
- * Changes:
- * Alan Cox Reformatted, removed sound_mem usage, use normal Linux
- * interrupt allocation. Protect against bogus unload
- * Fixed to allow IRQ > 15
- * Christoph Hellwig Adapted to module_init/module_exit
- * Arnaldo C. de Melo got rid of check_region
- *
- * Status:
- * Untested
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include "sound_config.h"
-
-#include "mpu401.h"
-
-struct uart401_devc
-{
- int base;
- int irq;
- int *osp;
- void (*midi_input_intr) (int dev, unsigned char data);
- int opened, disabled;
- volatile unsigned char input_byte;
- int my_dev;
- int share_irq;
- spinlock_t lock;
-};
-
-#define DATAPORT (devc->base)
-#define COMDPORT (devc->base+1)
-#define STATPORT (devc->base+1)
-
-static int uart401_status(struct uart401_devc *devc)
-{
- return inb(STATPORT);
-}
-
-#define input_avail(devc) (!(uart401_status(devc)&INPUT_AVAIL))
-#define output_ready(devc) (!(uart401_status(devc)&OUTPUT_READY))
-
-static void uart401_cmd(struct uart401_devc *devc, unsigned char cmd)
-{
- outb((cmd), COMDPORT);
-}
-
-static int uart401_read(struct uart401_devc *devc)
-{
- return inb(DATAPORT);
-}
-
-static void uart401_write(struct uart401_devc *devc, unsigned char byte)
-{
- outb((byte), DATAPORT);
-}
-
-#define OUTPUT_READY 0x40
-#define INPUT_AVAIL 0x80
-#define MPU_ACK 0xFE
-#define MPU_RESET 0xFF
-#define UART_MODE_ON 0x3F
-
-static int reset_uart401(struct uart401_devc *devc);
-static void enter_uart_mode(struct uart401_devc *devc);
-
-static void uart401_input_loop(struct uart401_devc *devc)
-{
- int work_limit=30000;
-
- while (input_avail(devc) && --work_limit)
- {
- unsigned char c = uart401_read(devc);
-
- if (c == MPU_ACK)
- devc->input_byte = c;
- else if (devc->opened & OPEN_READ && devc->midi_input_intr)
- devc->midi_input_intr(devc->my_dev, c);
- }
- if(work_limit==0)
- printk(KERN_WARNING "Too much work in interrupt on uart401 (0x%X). UART jabbering ??\n", devc->base);
-}
-
-irqreturn_t uart401intr(int irq, void *dev_id)
-{
- struct uart401_devc *devc = dev_id;
-
- if (devc == NULL)
- {
- printk(KERN_ERR "uart401: bad devc\n");
- return IRQ_NONE;
- }
-
- if (input_avail(devc))
- uart401_input_loop(devc);
- return IRQ_HANDLED;
-}
-
-static int
-uart401_open(int dev, int mode,
- void (*input) (int dev, unsigned char data),
- void (*output) (int dev)
-)
-{
- struct uart401_devc *devc = (struct uart401_devc *)
- midi_devs[dev]->devc;
-
- if (devc->opened)
- return -EBUSY;
-
- /* Flush the UART */
-
- while (input_avail(devc))
- uart401_read(devc);
-
- devc->midi_input_intr = input;
- devc->opened = mode;
- enter_uart_mode(devc);
- devc->disabled = 0;
-
- return 0;
-}
-
-static void uart401_close(int dev)
-{
- struct uart401_devc *devc = (struct uart401_devc *)
- midi_devs[dev]->devc;
-
- reset_uart401(devc);
- devc->opened = 0;
-}
-
-static int uart401_out(int dev, unsigned char midi_byte)
-{
- int timeout;
- unsigned long flags;
- struct uart401_devc *devc = (struct uart401_devc *)
- midi_devs[dev]->devc;
-
- if (devc->disabled)
- return 1;
- /*
- * Test for input since pending input seems to block the output.
- */
-
- spin_lock_irqsave(&devc->lock,flags);
- if (input_avail(devc))
- uart401_input_loop(devc);
-
- spin_unlock_irqrestore(&devc->lock,flags);
-
- /*
- * Sometimes it takes about 13000 loops before the output becomes ready
- * (After reset). Normally it takes just about 10 loops.
- */
-
- for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--);
-
- if (!output_ready(devc))
- {
- printk(KERN_WARNING "uart401: Timeout - Device not responding\n");
- devc->disabled = 1;
- reset_uart401(devc);
- enter_uart_mode(devc);
- return 1;
- }
- uart401_write(devc, midi_byte);
- return 1;
-}
-
-static inline int uart401_start_read(int dev)
-{
- return 0;
-}
-
-static inline int uart401_end_read(int dev)
-{
- return 0;
-}
-
-static inline void uart401_kick(int dev)
-{
-}
-
-static inline int uart401_buffer_status(int dev)
-{
- return 0;
-}
-
-#define MIDI_SYNTH_NAME "MPU-401 UART"
-#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT
-#include "midi_synth.h"
-
-static const struct midi_operations uart401_operations =
-{
- .owner = THIS_MODULE,
- .info = {"MPU-401 (UART) MIDI", 0, 0, SNDCARD_MPU401},
- .converter = &std_midi_synth,
- .in_info = {0},
- .open = uart401_open,
- .close = uart401_close,
- .outputc = uart401_out,
- .start_read = uart401_start_read,
- .end_read = uart401_end_read,
- .kick = uart401_kick,
- .buffer_status = uart401_buffer_status,
-};
-
-static void enter_uart_mode(struct uart401_devc *devc)
-{
- int ok, timeout;
- unsigned long flags;
-
- spin_lock_irqsave(&devc->lock,flags);
- for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--);
-
- devc->input_byte = 0;
- uart401_cmd(devc, UART_MODE_ON);
-
- ok = 0;
- for (timeout = 50000; timeout > 0 && !ok; timeout--)
- if (devc->input_byte == MPU_ACK)
- ok = 1;
- else if (input_avail(devc))
- if (uart401_read(devc) == MPU_ACK)
- ok = 1;
-
- spin_unlock_irqrestore(&devc->lock,flags);
-}
-
-static int reset_uart401(struct uart401_devc *devc)
-{
- int ok, timeout, n;
-
- /*
- * Send the RESET command. Try again if no success at the first time.
- */
-
- ok = 0;
-
- for (n = 0; n < 2 && !ok; n++)
- {
- for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--);
- devc->input_byte = 0;
- uart401_cmd(devc, MPU_RESET);
-
- /*
- * Wait at least 25 msec. This method is not accurate so let's make the
- * loop bit longer. Cannot sleep since this is called during boot.
- */
-
- for (timeout = 50000; timeout > 0 && !ok; timeout--)
- {
- if (devc->input_byte == MPU_ACK) /* Interrupt */
- ok = 1;
- else if (input_avail(devc))
- {
- if (uart401_read(devc) == MPU_ACK)
- ok = 1;
- }
- }
- }
-
- /* Flush input before enabling interrupts */
- if (ok)
- uart401_input_loop(devc);
- else
- DDB(printk("Reset UART401 failed - No hardware detected.\n"));
-
- return ok;
-}
-
-int probe_uart401(struct address_info *hw_config, struct module *owner)
-{
- struct uart401_devc *devc;
- char *name = "MPU-401 (UART) MIDI";
- int ok = 0;
- unsigned long flags;
-
- DDB(printk("Entered probe_uart401()\n"));
-
- /* Default to "not found" */
- hw_config->slots[4] = -1;
-
- if (!request_region(hw_config->io_base, 4, "MPU-401 UART")) {
- printk(KERN_INFO "uart401: could not request_region(%d, 4)\n", hw_config->io_base);
- return 0;
- }
-
- devc = kmalloc(sizeof(struct uart401_devc), GFP_KERNEL);
- if (!devc) {
- printk(KERN_WARNING "uart401: Can't allocate memory\n");
- goto cleanup_region;
- }
-
- devc->base = hw_config->io_base;
- devc->irq = hw_config->irq;
- devc->osp = hw_config->osp;
- devc->midi_input_intr = NULL;
- devc->opened = 0;
- devc->input_byte = 0;
- devc->my_dev = 0;
- devc->share_irq = 0;
- spin_lock_init(&devc->lock);
-
- spin_lock_irqsave(&devc->lock,flags);
- ok = reset_uart401(devc);
- spin_unlock_irqrestore(&devc->lock,flags);
-
- if (!ok)
- goto cleanup_devc;
-
- if (hw_config->name)
- name = hw_config->name;
-
- if (devc->irq < 0) {
- devc->share_irq = 1;
- devc->irq *= -1;
- } else
- devc->share_irq = 0;
-
- if (!devc->share_irq)
- if (request_irq(devc->irq, uart401intr, 0, "MPU-401 UART", devc) < 0) {
- printk(KERN_WARNING "uart401: Failed to allocate IRQ%d\n", devc->irq);
- devc->share_irq = 1;
- }
- devc->my_dev = sound_alloc_mididev();
- enter_uart_mode(devc);
-
- if (devc->my_dev == -1) {
- printk(KERN_INFO "uart401: Too many midi devices detected\n");
- goto cleanup_irq;
- }
- conf_printf(name, hw_config);
- midi_devs[devc->my_dev] = kmemdup(&uart401_operations,
- sizeof(struct midi_operations),
- GFP_KERNEL);
- if (!midi_devs[devc->my_dev]) {
- printk(KERN_ERR "uart401: Failed to allocate memory\n");
- goto cleanup_unload_mididev;
- }
-
- if (owner)
- midi_devs[devc->my_dev]->owner = owner;
-
- midi_devs[devc->my_dev]->devc = devc;
- midi_devs[devc->my_dev]->converter = kmemdup(&std_midi_synth,
- sizeof(struct synth_operations),
- GFP_KERNEL);
-
- if (!midi_devs[devc->my_dev]->converter) {
- printk(KERN_WARNING "uart401: Failed to allocate memory\n");
- goto cleanup_midi_devs;
- }
- strcpy(midi_devs[devc->my_dev]->info.name, name);
- midi_devs[devc->my_dev]->converter->id = "UART401";
- midi_devs[devc->my_dev]->converter->midi_dev = devc->my_dev;
-
- if (owner)
- midi_devs[devc->my_dev]->converter->owner = owner;
-
- hw_config->slots[4] = devc->my_dev;
- sequencer_init();
- devc->opened = 0;
- return 1;
-cleanup_midi_devs:
- kfree(midi_devs[devc->my_dev]);
-cleanup_unload_mididev:
- sound_unload_mididev(devc->my_dev);
-cleanup_irq:
- if (!devc->share_irq)
- free_irq(devc->irq, devc);
-cleanup_devc:
- kfree(devc);
-cleanup_region:
- release_region(hw_config->io_base, 4);
- return 0;
-}
-
-void unload_uart401(struct address_info *hw_config)
-{
- struct uart401_devc *devc;
- int n=hw_config->slots[4];
-
- /* Not set up */
- if(n==-1 || midi_devs[n]==NULL)
- return;
-
- /* Not allocated (erm ??) */
-
- devc = midi_devs[hw_config->slots[4]]->devc;
- if (devc == NULL)
- return;
-
- reset_uart401(devc);
- release_region(hw_config->io_base, 4);
-
- if (!devc->share_irq)
- free_irq(devc->irq, devc);
- kfree(midi_devs[devc->my_dev]->converter);
- kfree(midi_devs[devc->my_dev]);
- kfree(devc);
-
- /* This kills midi_devs[x] */
- sound_unload_mididev(hw_config->slots[4]);
-}
-
-EXPORT_SYMBOL(probe_uart401);
-EXPORT_SYMBOL(unload_uart401);
-EXPORT_SYMBOL(uart401intr);
-
-static struct address_info cfg_mpu;
-
-static int io = -1;
-static int irq = -1;
-
-module_param_hw(io, int, ioport, 0444);
-module_param_hw(irq, int, irq, 0444);
-
-
-static int __init init_uart401(void)
-{
- cfg_mpu.irq = irq;
- cfg_mpu.io_base = io;
-
- /* Can be loaded either for module use or to provide functions
- to others */
- if (cfg_mpu.io_base != -1 && cfg_mpu.irq != -1) {
- printk(KERN_INFO "MPU-401 UART driver Copyright (C) Hannu Savolainen 1993-1997");
- if (!probe_uart401(&cfg_mpu, THIS_MODULE))
- return -ENODEV;
- }
-
- return 0;
-}
-
-static void __exit cleanup_uart401(void)
-{
- if (cfg_mpu.io_base != -1 && cfg_mpu.irq != -1)
- unload_uart401(&cfg_mpu);
-}
-
-module_init(init_uart401);
-module_exit(cleanup_uart401);
-
-#ifndef MODULE
-static int __init setup_uart401(char *str)
-{
- /* io, irq */
- int ints[3];
-
- str = get_options(str, ARRAY_SIZE(ints), ints);
-
- io = ints[1];
- irq = ints[2];
-
- return 1;
-}
-
-__setup("uart401=", setup_uart401);
-#endif
-MODULE_LICENSE("GPL");
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