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staging: speakup: add send_xchar and tiocmset methods

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This adds two methods to spk_synth struct: send_xchar and tiocmset, and
creates serial implementation for each of them. It takes existing code
in apollo, audptr and spkout which already fits the behaviour of
send_xchar and tiocmset. In follow-up patches there will be TTY-based
implementations of these methods. Then migrating the synths to TTY will
include repointing these methods to their TTY implementations

Rest of the changes simply make use of serial implementation of these two
functions.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Okash Khawaja 2017-04-22 09:00:28 +01:00 committed by Greg Kroah-Hartman
parent a455178e59
commit be223d5775
5 changed files with 29 additions and 19 deletions
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23
drivers/staging/speakup/serialio.c
View file

@ -26,8 +26,13 @@ static const struct old_serial_port *serstate;
static int timeouts;
static int spk_serial_out(struct spk_synth *in_synth, const char ch);
static void spk_serial_send_xchar(char ch);
static void spk_serial_tiocmset(unsigned int set, unsigned int clear);
struct spk_io_ops spk_serial_io_ops = {
.synth_out = spk_serial_out,
.send_xchar = spk_serial_send_xchar,
.tiocmset = spk_serial_tiocmset,
};
EXPORT_SYMBOL_GPL(spk_serial_io_ops);
@ -136,6 +141,24 @@ static void start_serial_interrupt(int irq)
outb(1, speakup_info.port_tts + UART_FCR); /* Turn FIFO On */
}
static void spk_serial_send_xchar(char ch)
{
int timeout = SPK_XMITR_TIMEOUT;
while (spk_serial_tx_busy()) {
if (!--timeout)
break;
udelay(1);
}
outb(ch, speakup_info.port_tts);
}
static void spk_serial_tiocmset(unsigned int set, unsigned int clear)
{
int old = inb(speakup_info.port_tts + UART_MCR);
outb((old & ~clear) | set, speakup_info.port_tts + UART_MCR);
}
int spk_serial_synth_probe(struct spk_synth *synth)
{
const struct old_serial_port *ser;

5
drivers/staging/speakup/speakup_apollo.c
View file

@ -171,9 +171,8 @@ static void do_catch_up(struct spk_synth *synth)
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (!synth->io_ops->synth_out(synth, ch)) {
outb(UART_MCR_DTR, speakup_info.port_tts + UART_MCR);
outb(UART_MCR_DTR | UART_MCR_RTS,
speakup_info.port_tts + UART_MCR);
synth->io_ops->tiocmset(0, UART_MCR_RTS);
synth->io_ops->tiocmset(UART_MCR_RTS, 0);
schedule_timeout(msecs_to_jiffies(full_time_val));
continue;
}

9
drivers/staging/speakup/speakup_audptr.c
View file

@ -128,14 +128,7 @@ static struct spk_synth synth_audptr = {
static void synth_flush(struct spk_synth *synth)
{
int timeout = SPK_XMITR_TIMEOUT;
while (spk_serial_tx_busy()) {
if (!--timeout)
break;
udelay(1);
}
outb(SYNTH_CLEAR, speakup_info.port_tts);
synth->io_ops->send_xchar(SYNTH_CLEAR);
synth->io_ops->synth_out(synth, PROCSPEECH);
}

9
drivers/staging/speakup/speakup_spkout.c
View file

@ -126,14 +126,7 @@ static struct spk_synth synth_spkout = {
static void synth_flush(struct spk_synth *synth)
{
int timeout = SPK_XMITR_TIMEOUT;
while (spk_serial_tx_busy()) {
if (!--timeout)
break;
udelay(1);
}
outb(SYNTH_CLEAR, speakup_info.port_tts);
synth->io_ops->send_xchar(SYNTH_CLEAR);
}
module_param_named(ser, synth_spkout.ser, int, 0444);

2
drivers/staging/speakup/spk_types.h
View file

@ -150,6 +150,8 @@ struct spk_synth;
struct spk_io_ops {
int (*synth_out)(struct spk_synth *synth, const char ch);
void (*send_xchar)(char ch);
void (*tiocmset)(unsigned int set, unsigned int clear);
};
struct spk_synth {