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Diffstat (limited to 'sound/drivers/serial-u16550.c')
-rw-r--r--sound/drivers/serial-u16550.c405
1 files changed, 231 insertions, 174 deletions
diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index 416172ea1f4..9ad4414fa25 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -1,6 +1,6 @@
/*
* serial.c
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
* Isaku Yamahata <yamahata@private.email.ne.jp>,
* George Hansper <ghansper@apana.org.au>,
* Hannu Savolainen
@@ -30,17 +30,19 @@
* More documentation can be found in serial-u16550.txt.
*/
-#include <sound/driver.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/ioport.h>
-#include <linux/moduleparam.h>
+#include <linux/module.h>
#include <sound/core.h>
#include <sound/rawmidi.h>
#include <sound/initval.h>
#include <linux/serial_reg.h>
+#include <linux/jiffies.h>
#include <asm/io.h>
@@ -67,7 +69,7 @@ static char *adaptor_names[] = {
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
-static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x3f8,0x2f8,0x3e8,0x2e8 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,4,5,7,9,10,11,14,15 */
static int speed[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 38400}; /* 9600,19200,38400,57600,115200 */
@@ -75,7 +77,7 @@ static int base[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 115200}; /* baud bas
static int outs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; /* 1 to 16 */
static int ins[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; /* 1 to 16 */
static int adaptor[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = SNDRV_SERIAL_SOUNDCANVAS};
-static int droponfull[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS -1)] = SNDRV_SERIAL_NORMALBUFF };
+static bool droponfull[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS -1)] = SNDRV_SERIAL_NORMALBUFF };
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Serial MIDI.");
@@ -115,13 +117,13 @@ MODULE_PARM_DESC(adaptor, "Type of adaptor.");
#define SERIAL_MODE_INPUT_TRIGGERED (1 << 2)
#define SERIAL_MODE_OUTPUT_TRIGGERED (1 << 3)
-typedef struct _snd_uart16550 {
- snd_card_t *card;
- snd_rawmidi_t *rmidi;
- snd_rawmidi_substream_t *midi_output[SNDRV_SERIAL_MAX_OUTS];
- snd_rawmidi_substream_t *midi_input[SNDRV_SERIAL_MAX_INS];
+struct snd_uart16550 {
+ struct snd_card *card;
+ struct snd_rawmidi *rmidi;
+ struct snd_rawmidi_substream *midi_output[SNDRV_SERIAL_MAX_OUTS];
+ struct snd_rawmidi_substream *midi_input[SNDRV_SERIAL_MAX_INS];
- int filemode; //open status of file
+ int filemode; /* open status of file */
spinlock_t open_lock;
@@ -138,39 +140,39 @@ typedef struct _snd_uart16550 {
unsigned char old_divisor_msb;
unsigned char old_line_ctrl_reg;
- // parameter for using of write loop
- short int fifo_limit; //used in uart16550
- short int fifo_count; //used in uart16550
+ /* parameter for using of write loop */
+ short int fifo_limit; /* used in uart16550 */
+ short int fifo_count; /* used in uart16550 */
- // type of adaptor
+ /* type of adaptor */
int adaptor;
- // inputs
+ /* inputs */
int prev_in;
unsigned char rstatus;
- // outputs
+ /* outputs */
int prev_out;
unsigned char prev_status[SNDRV_SERIAL_MAX_OUTS];
- // write buffer and its writing/reading position
+ /* write buffer and its writing/reading position */
unsigned char tx_buff[TX_BUFF_SIZE];
int buff_in_count;
int buff_in;
int buff_out;
int drop_on_full;
- // wait timer
+ /* wait timer */
unsigned int timer_running:1;
struct timer_list buffer_timer;
-} snd_uart16550_t;
+};
-static snd_card_t *snd_serial_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+static struct platform_device *devices[SNDRV_CARDS];
-static inline void snd_uart16550_add_timer(snd_uart16550_t *uart)
+static inline void snd_uart16550_add_timer(struct snd_uart16550 *uart)
{
- if (! uart->timer_running) {
+ if (!uart->timer_running) {
/* timer 38600bps * 10bit * 16byte */
uart->buffer_timer.expires = jiffies + (HZ+255)/256;
uart->timer_running = 1;
@@ -178,7 +180,7 @@ static inline void snd_uart16550_add_timer(snd_uart16550_t *uart)
}
}
-static inline void snd_uart16550_del_timer(snd_uart16550_t *uart)
+static inline void snd_uart16550_del_timer(struct snd_uart16550 *uart)
{
if (uart->timer_running) {
del_timer(&uart->buffer_timer);
@@ -187,10 +189,10 @@ static inline void snd_uart16550_del_timer(snd_uart16550_t *uart)
}
/* This macro is only used in snd_uart16550_io_loop */
-static inline void snd_uart16550_buffer_output(snd_uart16550_t *uart)
+static inline void snd_uart16550_buffer_output(struct snd_uart16550 *uart)
{
unsigned short buff_out = uart->buff_out;
- if( uart->buff_in_count > 0 ) {
+ if (uart->buff_in_count > 0) {
outb(uart->tx_buff[buff_out], uart->base + UART_TX);
uart->fifo_count++;
buff_out++;
@@ -204,7 +206,7 @@ static inline void snd_uart16550_buffer_output(snd_uart16550_t *uart)
* We don't want to interrupt this,
* as we're already handling an interrupt
*/
-static void snd_uart16550_io_loop(snd_uart16550_t * uart)
+static void snd_uart16550_io_loop(struct snd_uart16550 * uart)
{
unsigned char c, status;
int substream;
@@ -218,9 +220,8 @@ static void snd_uart16550_io_loop(snd_uart16550_t * uart)
c = inb(uart->base + UART_RX);
/* keep track of last status byte */
- if (c & 0x80) {
+ if (c & 0x80)
uart->rstatus = c;
- }
/* handle stream switch */
if (uart->adaptor == SNDRV_SERIAL_GENERIC) {
@@ -228,17 +229,20 @@ static void snd_uart16550_io_loop(snd_uart16550_t * uart)
if (c <= SNDRV_SERIAL_MAX_INS && c > 0)
substream = c - 1;
if (c != 0xf5)
- uart->rstatus = 0; /* prevent future bytes from being interpreted as streams */
- }
- else if ((uart->filemode & SERIAL_MODE_INPUT_OPEN) && (uart->midi_input[substream] != NULL)) {
- snd_rawmidi_receive(uart->midi_input[substream], &c, 1);
- }
- } else if ((uart->filemode & SERIAL_MODE_INPUT_OPEN) && (uart->midi_input[substream] != NULL)) {
+ /* prevent future bytes from being
+ interpreted as streams */
+ uart->rstatus = 0;
+ } else if ((uart->filemode & SERIAL_MODE_INPUT_OPEN)
+ && uart->midi_input[substream])
+ snd_rawmidi_receive(uart->midi_input[substream],
+ &c, 1);
+ } else if ((uart->filemode & SERIAL_MODE_INPUT_OPEN) &&
+ uart->midi_input[substream])
snd_rawmidi_receive(uart->midi_input[substream], &c, 1);
- }
if (status & UART_LSR_OE)
- snd_printk("%s: Overrun on device at 0x%lx\n",
+ snd_printk(KERN_WARNING
+ "%s: Overrun on device at 0x%lx\n",
uart->rmidi->name, uart->base);
}
@@ -248,21 +252,20 @@ static void snd_uart16550_io_loop(snd_uart16550_t * uart)
/* no need of check SERIAL_MODE_OUTPUT_OPEN because if not,
buffer is never filled. */
/* Check write status */
- if (status & UART_LSR_THRE) {
+ if (status & UART_LSR_THRE)
uart->fifo_count = 0;
- }
if (uart->adaptor == SNDRV_SERIAL_MS124W_SA
|| uart->adaptor == SNDRV_SERIAL_GENERIC) {
/* Can't use FIFO, must send only when CTS is true */
status = inb(uart->base + UART_MSR);
- while( (uart->fifo_count == 0) && (status & UART_MSR_CTS) &&
- (uart->buff_in_count > 0) ) {
+ while (uart->fifo_count == 0 && (status & UART_MSR_CTS) &&
+ uart->buff_in_count > 0) {
snd_uart16550_buffer_output(uart);
- status = inb( uart->base + UART_MSR );
+ status = inb(uart->base + UART_MSR);
}
} else {
/* Write loop */
- while (uart->fifo_count < uart->fifo_limit /* Can we write ? */
+ while (uart->fifo_count < uart->fifo_limit /* Can we write ? */
&& uart->buff_in_count > 0) /* Do we want to? */
snd_uart16550_buffer_output(uart);
}
@@ -290,17 +293,18 @@ static void snd_uart16550_io_loop(snd_uart16550_t * uart)
* Note that some devices need OUT2 to be set before they will generate
* interrupts at all. (Possibly tied to an internal pull-up on CTS?)
*/
-static irqreturn_t snd_uart16550_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t snd_uart16550_interrupt(int irq, void *dev_id)
{
- snd_uart16550_t *uart;
+ struct snd_uart16550 *uart;
- uart = (snd_uart16550_t *) dev_id;
+ uart = dev_id;
spin_lock(&uart->open_lock);
if (uart->filemode == SERIAL_MODE_NOT_OPENED) {
spin_unlock(&uart->open_lock);
return IRQ_NONE;
}
- inb(uart->base + UART_IIR); /* indicate to the UART that the interrupt has been serviced */
+ /* indicate to the UART that the interrupt has been serviced */
+ inb(uart->base + UART_IIR);
snd_uart16550_io_loop(uart);
spin_unlock(&uart->open_lock);
return IRQ_HANDLED;
@@ -310,9 +314,9 @@ static irqreturn_t snd_uart16550_interrupt(int irq, void *dev_id, struct pt_regs
static void snd_uart16550_buffer_timer(unsigned long data)
{
unsigned long flags;
- snd_uart16550_t *uart;
+ struct snd_uart16550 *uart;
- uart = (snd_uart16550_t *)data;
+ uart = (struct snd_uart16550 *)data;
spin_lock_irqsave(&uart->open_lock, flags);
snd_uart16550_del_timer(uart);
snd_uart16550_io_loop(uart);
@@ -324,7 +328,7 @@ static void snd_uart16550_buffer_timer(unsigned long data)
* return 0 if found
* return negative error if not found
*/
-static int __init snd_uart16550_detect(snd_uart16550_t *uart)
+static int snd_uart16550_detect(struct snd_uart16550 *uart)
{
unsigned long io_base = uart->base;
int ok;
@@ -341,7 +345,8 @@ static int __init snd_uart16550_detect(snd_uart16550_t *uart)
return -EBUSY;
}
- ok = 1; /* uart detected unless one of the following tests should fail */
+ /* uart detected unless one of the following tests should fail */
+ ok = 1;
/* 8 data-bits, 1 stop-bit, parity off, DLAB = 0 */
outb(UART_LCR_WLEN8, io_base + UART_LCR); /* Line Control Register */
c = inb(io_base + UART_IER);
@@ -366,7 +371,7 @@ static int __init snd_uart16550_detect(snd_uart16550_t *uart)
return ok;
}
-static void snd_uart16550_do_open(snd_uart16550_t * uart)
+static void snd_uart16550_do_open(struct snd_uart16550 * uart)
{
char byte;
@@ -451,14 +456,14 @@ static void snd_uart16550_do_open(snd_uart16550_t * uart)
| UART_IER_THRI /* Enable Transmitter holding register empty interrupt */
;
}
- outb(byte, uart->base + UART_IER); /* Interupt enable Register */
+ outb(byte, uart->base + UART_IER); /* Interrupt enable Register */
inb(uart->base + UART_LSR); /* Clear any pre-existing overrun indication */
inb(uart->base + UART_IIR); /* Clear any pre-existing transmit interrupt */
inb(uart->base + UART_RX); /* Clear any pre-existing receive interrupt */
}
-static void snd_uart16550_do_close(snd_uart16550_t * uart)
+static void snd_uart16550_do_close(struct snd_uart16550 * uart)
{
if (uart->irq < 0)
snd_uart16550_del_timer(uart);
@@ -469,7 +474,7 @@ static void snd_uart16550_do_close(snd_uart16550_t * uart)
outb((0 & UART_IER_RDI) /* Disable Receiver data interrupt */
|(0 & UART_IER_THRI) /* Disable Transmitter holding register empty interrupt */
- ,uart->base + UART_IER); /* Interupt enable Register */
+ ,uart->base + UART_IER); /* Interrupt enable Register */
switch (uart->adaptor) {
default:
@@ -509,10 +514,10 @@ static void snd_uart16550_do_close(snd_uart16550_t * uart)
}
}
-static int snd_uart16550_input_open(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_input_open(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
if (uart->filemode == SERIAL_MODE_NOT_OPENED)
@@ -523,10 +528,10 @@ static int snd_uart16550_input_open(snd_rawmidi_substream_t * substream)
return 0;
}
-static int snd_uart16550_input_close(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_input_close(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
uart->filemode &= ~SERIAL_MODE_INPUT_OPEN;
@@ -537,24 +542,24 @@ static int snd_uart16550_input_close(snd_rawmidi_substream_t * substream)
return 0;
}
-static void snd_uart16550_input_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_uart16550_input_trigger(struct snd_rawmidi_substream *substream,
+ int up)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
- if (up) {
+ if (up)
uart->filemode |= SERIAL_MODE_INPUT_TRIGGERED;
- } else {
+ else
uart->filemode &= ~SERIAL_MODE_INPUT_TRIGGERED;
- }
spin_unlock_irqrestore(&uart->open_lock, flags);
}
-static int snd_uart16550_output_open(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_output_open(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
if (uart->filemode == SERIAL_MODE_NOT_OPENED)
@@ -565,10 +570,10 @@ static int snd_uart16550_output_open(snd_rawmidi_substream_t * substream)
return 0;
};
-static int snd_uart16550_output_close(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_output_close(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
uart->filemode &= ~SERIAL_MODE_OUTPUT_OPEN;
@@ -579,18 +584,20 @@ static int snd_uart16550_output_close(snd_rawmidi_substream_t * substream)
return 0;
};
-static inline int snd_uart16550_buffer_can_write( snd_uart16550_t *uart, int Num )
+static inline int snd_uart16550_buffer_can_write(struct snd_uart16550 *uart,
+ int Num)
{
- if( uart->buff_in_count + Num < TX_BUFF_SIZE )
+ if (uart->buff_in_count + Num < TX_BUFF_SIZE)
return 1;
else
return 0;
}
-static inline int snd_uart16550_write_buffer(snd_uart16550_t *uart, unsigned char byte)
+static inline int snd_uart16550_write_buffer(struct snd_uart16550 *uart,
+ unsigned char byte)
{
unsigned short buff_in = uart->buff_in;
- if( uart->buff_in_count < TX_BUFF_SIZE ) {
+ if (uart->buff_in_count < TX_BUFF_SIZE) {
uart->tx_buff[buff_in] = byte;
buff_in++;
buff_in &= TX_BUFF_MASK;
@@ -603,12 +610,14 @@ static inline int snd_uart16550_write_buffer(snd_uart16550_t *uart, unsigned cha
return 0;
}
-static int snd_uart16550_output_byte(snd_uart16550_t *uart, snd_rawmidi_substream_t * substream, unsigned char midi_byte)
+static int snd_uart16550_output_byte(struct snd_uart16550 *uart,
+ struct snd_rawmidi_substream *substream,
+ unsigned char midi_byte)
{
- if (uart->buff_in_count == 0 /* Buffer empty? */
+ if (uart->buff_in_count == 0 /* Buffer empty? */
&& ((uart->adaptor != SNDRV_SERIAL_MS124W_SA &&
uart->adaptor != SNDRV_SERIAL_GENERIC) ||
- (uart->fifo_count == 0 /* FIFO empty? */
+ (uart->fifo_count == 0 /* FIFO empty? */
&& (inb(uart->base + UART_MSR) & UART_MSR_CTS)))) { /* CTS? */
/* Tx Buffer Empty - try to write immediately */
@@ -621,13 +630,15 @@ static int snd_uart16550_output_byte(snd_uart16550_t *uart, snd_rawmidi_substrea
uart->fifo_count++;
outb(midi_byte, uart->base + UART_TX);
} else {
- /* Cannot write (buffer empty) - put char in buffer */
+ /* Cannot write (buffer empty) -
+ * put char in buffer */
snd_uart16550_write_buffer(uart, midi_byte);
}
}
} else {
- if( !snd_uart16550_write_buffer(uart, midi_byte) ) {
- snd_printk("%s: Buffer overrun on device at 0x%lx\n",
+ if (!snd_uart16550_write_buffer(uart, midi_byte)) {
+ snd_printk(KERN_WARNING
+ "%s: Buffer overrun on device at 0x%lx\n",
uart->rmidi->name, uart->base);
return 0;
}
@@ -636,22 +647,22 @@ static int snd_uart16550_output_byte(snd_uart16550_t *uart, snd_rawmidi_substrea
return 1;
}
-static void snd_uart16550_output_write(snd_rawmidi_substream_t * substream)
+static void snd_uart16550_output_write(struct snd_rawmidi_substream *substream)
{
unsigned long flags;
unsigned char midi_byte, addr_byte;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
char first;
- static unsigned long lasttime=0;
+ static unsigned long lasttime = 0;
- /* Interupts are disabled during the updating of the tx_buff,
+ /* Interrupts are disabled during the updating of the tx_buff,
* since it is 'bad' to have two processes updating the same
* variables (ie buff_in & buff_out)
*/
spin_lock_irqsave(&uart->open_lock, flags);
- if (uart->irq < 0) //polling
+ if (uart->irq < 0) /* polling */
snd_uart16550_io_loop(uart);
if (uart->adaptor == SNDRV_SERIAL_MS124W_MB) {
@@ -669,7 +680,8 @@ static void snd_uart16550_output_write(snd_rawmidi_substream_t * substream)
/* select any combination of the four ports */
addr_byte = (substream->number << 4) | 0x08;
/* ...except none */
- if (addr_byte == 0x08) addr_byte = 0xf8;
+ if (addr_byte == 0x08)
+ addr_byte = 0xf8;
#endif
snd_uart16550_output_byte(uart, substream, addr_byte);
/* send midi byte */
@@ -677,31 +689,42 @@ static void snd_uart16550_output_write(snd_rawmidi_substream_t * substream)
}
} else {
first = 0;
- while( 1 == snd_rawmidi_transmit_peek(substream, &midi_byte, 1) ) {
- /* Also send F5 after 3 seconds with no data to handle device disconnect */
- if (first == 0 && (uart->adaptor == SNDRV_SERIAL_SOUNDCANVAS ||
- uart->adaptor == SNDRV_SERIAL_GENERIC) &&
- (uart->prev_out != substream->number || jiffies-lasttime > 3*HZ)) {
-
- if( snd_uart16550_buffer_can_write( uart, 3 ) ) {
+ while (snd_rawmidi_transmit_peek(substream, &midi_byte, 1) == 1) {
+ /* Also send F5 after 3 seconds with no data
+ * to handle device disconnect */
+ if (first == 0 &&
+ (uart->adaptor == SNDRV_SERIAL_SOUNDCANVAS ||
+ uart->adaptor == SNDRV_SERIAL_GENERIC) &&
+ (uart->prev_out != substream->number ||
+ time_after(jiffies, lasttime + 3*HZ))) {
+
+ if (snd_uart16550_buffer_can_write(uart, 3)) {
/* Roland Soundcanvas part selection */
- /* If this substream of the data is different previous
- substream in this uart, send the change part event */
+ /* If this substream of the data is
+ * different previous substream
+ * in this uart, send the change part
+ * event
+ */
uart->prev_out = substream->number;
/* change part */
- snd_uart16550_output_byte(uart, substream, 0xf5);
+ snd_uart16550_output_byte(uart, substream,
+ 0xf5);
/* data */
- snd_uart16550_output_byte(uart, substream, uart->prev_out + 1);
- /* If midi_byte is a data byte, send the previous status byte */
- if ((midi_byte < 0x80) && (uart->adaptor == SNDRV_SERIAL_SOUNDCANVAS))
+ snd_uart16550_output_byte(uart, substream,
+ uart->prev_out + 1);
+ /* If midi_byte is a data byte,
+ * send the previous status byte */
+ if (midi_byte < 0x80 &&
+ uart->adaptor == SNDRV_SERIAL_SOUNDCANVAS)
snd_uart16550_output_byte(uart, substream, uart->prev_status[uart->prev_out]);
- } else if( !uart->drop_on_full )
+ } else if (!uart->drop_on_full)
break;
}
/* send midi byte */
- if( !snd_uart16550_output_byte(uart, substream, midi_byte) && !uart->drop_on_full )
+ if (!snd_uart16550_output_byte(uart, substream, midi_byte) &&
+ !uart->drop_on_full )
break;
if (midi_byte >= 0x80 && midi_byte < 0xf0)
@@ -715,67 +738,64 @@ static void snd_uart16550_output_write(snd_rawmidi_substream_t * substream)
spin_unlock_irqrestore(&uart->open_lock, flags);
}
-static void snd_uart16550_output_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_uart16550_output_trigger(struct snd_rawmidi_substream *substream,
+ int up)
{
unsigned long flags;
- snd_uart16550_t *uart = substream->rmidi->private_data;
+ struct snd_uart16550 *uart = substream->rmidi->private_data;
spin_lock_irqsave(&uart->open_lock, flags);
- if (up) {
+ if (up)
uart->filemode |= SERIAL_MODE_OUTPUT_TRIGGERED;
- } else {
+ else
uart->filemode &= ~SERIAL_MODE_OUTPUT_TRIGGERED;
- }
spin_unlock_irqrestore(&uart->open_lock, flags);
if (up)
snd_uart16550_output_write(substream);
}
-static snd_rawmidi_ops_t snd_uart16550_output =
+static struct snd_rawmidi_ops snd_uart16550_output =
{
.open = snd_uart16550_output_open,
.close = snd_uart16550_output_close,
.trigger = snd_uart16550_output_trigger,
};
-static snd_rawmidi_ops_t snd_uart16550_input =
+static struct snd_rawmidi_ops snd_uart16550_input =
{
.open = snd_uart16550_input_open,
.close = snd_uart16550_input_close,
.trigger = snd_uart16550_input_trigger,
};
-static int snd_uart16550_free(snd_uart16550_t *uart)
+static int snd_uart16550_free(struct snd_uart16550 *uart)
{
if (uart->irq >= 0)
- free_irq(uart->irq, (void *)uart);
- if (uart->res_base) {
- release_resource(uart->res_base);
- kfree_nocheck(uart->res_base);
- }
+ free_irq(uart->irq, uart);
+ release_and_free_resource(uart->res_base);
kfree(uart);
return 0;
};
-static int snd_uart16550_dev_free(snd_device_t *device)
+static int snd_uart16550_dev_free(struct snd_device *device)
{
- snd_uart16550_t *uart = device->device_data;
+ struct snd_uart16550 *uart = device->device_data;
return snd_uart16550_free(uart);
}
-static int __init snd_uart16550_create(snd_card_t * card,
- unsigned long iobase,
- int irq,
- unsigned int speed,
- unsigned int base,
- int adaptor,
- int droponfull,
- snd_uart16550_t **ruart)
+static int snd_uart16550_create(struct snd_card *card,
+ unsigned long iobase,
+ int irq,
+ unsigned int speed,
+ unsigned int base,
+ int adaptor,
+ int droponfull,
+ struct snd_uart16550 **ruart)
{
- static snd_device_ops_t ops = {
+ static struct snd_device_ops ops = {
.dev_free = snd_uart16550_dev_free,
};
- snd_uart16550_t *uart;
+ struct snd_uart16550 *uart;
int err;
@@ -790,13 +810,15 @@ static int __init snd_uart16550_create(snd_card_t * card,
if ((err = snd_uart16550_detect(uart)) <= 0) {
printk(KERN_ERR "no UART detected at 0x%lx\n", iobase);
- return err;
+ snd_uart16550_free(uart);
+ return -ENODEV;
}
if (irq >= 0 && irq != SNDRV_AUTO_IRQ) {
if (request_irq(irq, snd_uart16550_interrupt,
- SA_INTERRUPT, "Serial MIDI", (void *) uart)) {
- snd_printk("irq %d busy. Using Polling.\n", irq);
+ 0, "Serial MIDI", uart)) {
+ snd_printk(KERN_WARNING
+ "irq %d busy. Using Polling.\n", irq);
} else {
uart->irq = irq;
}
@@ -841,25 +863,30 @@ static int __init snd_uart16550_create(snd_card_t * card,
return 0;
}
-static void __init snd_uart16550_substreams(snd_rawmidi_str_t *stream)
+static void snd_uart16550_substreams(struct snd_rawmidi_str *stream)
{
- struct list_head *list;
+ struct snd_rawmidi_substream *substream;
- list_for_each(list, &stream->substreams) {
- snd_rawmidi_substream_t *substream = list_entry(list, snd_rawmidi_substream_t, list);
+ list_for_each_entry(substream, &stream->substreams, list) {
sprintf(substream->name, "Serial MIDI %d", substream->number + 1);
}
}
-static int __init snd_uart16550_rmidi(snd_uart16550_t *uart, int device, int outs, int ins, snd_rawmidi_t **rmidi)
+static int snd_uart16550_rmidi(struct snd_uart16550 *uart, int device,
+ int outs, int ins,
+ struct snd_rawmidi **rmidi)
{
- snd_rawmidi_t *rrawmidi;
+ struct snd_rawmidi *rrawmidi;
int err;
- if ((err = snd_rawmidi_new(uart->card, "UART Serial MIDI", device, outs, ins, &rrawmidi)) < 0)
+ err = snd_rawmidi_new(uart->card, "UART Serial MIDI", device,
+ outs, ins, &rrawmidi);
+ if (err < 0)
return err;
- snd_rawmidi_set_ops(rrawmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_uart16550_input);
- snd_rawmidi_set_ops(rrawmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_uart16550_output);
+ snd_rawmidi_set_ops(rrawmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+ &snd_uart16550_input);
+ snd_rawmidi_set_ops(rrawmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &snd_uart16550_output);
strcpy(rrawmidi->name, "Serial MIDI");
snd_uart16550_substreams(&rrawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]);
snd_uart16550_substreams(&rrawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]);
@@ -872,14 +899,12 @@ static int __init snd_uart16550_rmidi(snd_uart16550_t *uart, int device, int out
return 0;
}
-static int __init snd_serial_probe(int dev)
+static int snd_serial_probe(struct platform_device *devptr)
{
- snd_card_t *card;
- snd_uart16550_t *uart;
+ struct snd_card *card;
+ struct snd_uart16550 *uart;
int err;
-
- if (!enable[dev])
- return -ENOENT;
+ int dev = devptr->id;
switch (adaptor[dev]) {
case SNDRV_SERIAL_SOUNDCANVAS:
@@ -897,26 +922,30 @@ static int __init snd_serial_probe(int dev)
case SNDRV_SERIAL_GENERIC:
break;
default:
- snd_printk("Adaptor type is out of range 0-%d (%d)\n",
+ snd_printk(KERN_ERR
+ "Adaptor type is out of range 0-%d (%d)\n",
SNDRV_SERIAL_MAX_ADAPTOR, adaptor[dev]);
return -ENODEV;
}
if (outs[dev] < 1 || outs[dev] > SNDRV_SERIAL_MAX_OUTS) {
- snd_printk("Count of outputs is out of range 1-%d (%d)\n",
+ snd_printk(KERN_ERR
+ "Count of outputs is out of range 1-%d (%d)\n",
SNDRV_SERIAL_MAX_OUTS, outs[dev]);
return -ENODEV;
}
if (ins[dev] < 1 || ins[dev] > SNDRV_SERIAL_MAX_INS) {
- snd_printk("Count of inputs is out of range 1-%d (%d)\n",
+ snd_printk(KERN_ERR
+ "Count of inputs is out of range 1-%d (%d)\n",
SNDRV_SERIAL_MAX_INS, ins[dev]);
return -ENODEV;
}
- card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
- if (card == NULL)
- return -ENOMEM;
+ err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
+ 0, &card);
+ if (err < 0)
+ return err;
strcpy(card->driver, "Serial");
strcpy(card->shortname, "Serial MIDI (UART16550A)");
@@ -931,27 +960,20 @@ static int __init snd_serial_probe(int dev)
&uart)) < 0)
goto _err;
- if ((err = snd_uart16550_rmidi(uart, 0, outs[dev], ins[dev], &uart->rmidi)) < 0)
+ err = snd_uart16550_rmidi(uart, 0, outs[dev], ins[dev], &uart->rmidi);
+ if (err < 0)
goto _err;
- sprintf(card->longname, "%s at 0x%lx, irq %d speed %d div %d outs %d ins %d adaptor %s droponfull %d",
+ sprintf(card->longname, "%s [%s] at %#lx, irq %d",
card->shortname,
- uart->base,
- uart->irq,
- uart->speed,
- (int)uart->divisor,
- outs[dev],
- ins[dev],
adaptor_names[uart->adaptor],
- uart->drop_on_full);
-
- if ((err = snd_card_set_generic_dev(card)) < 0)
- goto _err;
+ uart->base,
+ uart->irq);
if ((err = snd_card_register(card)) < 0)
goto _err;
- snd_serial_cards[dev] = card;
+ platform_set_drvdata(devptr, card);
return 0;
_err:
@@ -959,20 +981,60 @@ static int __init snd_serial_probe(int dev)
return err;
}
+static int snd_serial_remove(struct platform_device *devptr)
+{
+ snd_card_free(platform_get_drvdata(devptr));
+ return 0;
+}
+
+#define SND_SERIAL_DRIVER "snd_serial_u16550"
+
+static struct platform_driver snd_serial_driver = {
+ .probe = snd_serial_probe,
+ .remove = snd_serial_remove,
+ .driver = {
+ .name = SND_SERIAL_DRIVER,
+ .owner = THIS_MODULE,
+ },
+};
+
+static void snd_serial_unregister_all(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devices); ++i)
+ platform_device_unregister(devices[i]);
+ platform_driver_unregister(&snd_serial_driver);
+}
+
static int __init alsa_card_serial_init(void)
{
- int dev = 0;
- int cards = 0;
+ int i, cards, err;
- for (dev = 0; dev < SNDRV_CARDS; dev++) {
- if (snd_serial_probe(dev) == 0)
- cards++;
- }
+ if ((err = platform_driver_register(&snd_serial_driver)) < 0)
+ return err;
- if (cards == 0) {
+ cards = 0;
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ struct platform_device *device;
+ if (! enable[i])
+ continue;
+ device = platform_device_register_simple(SND_SERIAL_DRIVER,
+ i, NULL, 0);
+ if (IS_ERR(device))
+ continue;
+ if (!platform_get_drvdata(device)) {
+ platform_device_unregister(device);
+ continue;
+ }
+ devices[i] = device;
+ cards++;
+ }
+ if (! cards) {
#ifdef MODULE
printk(KERN_ERR "serial midi soundcard not found or device busy\n");
#endif
+ snd_serial_unregister_all();
return -ENODEV;
}
return 0;
@@ -980,12 +1042,7 @@ static int __init alsa_card_serial_init(void)
static void __exit alsa_card_serial_exit(void)
{
- int dev;
-
- for (dev = 0; dev < SNDRV_CARDS; dev++) {
- if (snd_serial_cards[dev] != NULL)
- snd_card_free(snd_serial_cards[dev]);
- }
+ snd_serial_unregister_all();
}
module_init(alsa_card_serial_init)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:58:32 +0000