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Subject[patch 3/7] staging: serial: add spk_io_ops struct to spk_synth
This patch adds spk_io_ops struct which contain those methods whose job is to
communicate with synth device. Currently, all comms with external synth
device use raw serial i/o. Starting with this patch set, an alternative
tty-based way of communication is being introduced. The idea is to group all
methods which do the actual communication with external device into this new
struct. Then migrating a serial-based synth over to tty will mean swapping
serial spk_io_ops instance with tty spk_io_ops instance, making the migration
simpler.

At the moment, this struct only contains one method, synth_out but more will
be added in future when incorporating inputs in the tty-based comms. Also at
the moment, synth_out method has one implementation which uses serial i/o.
Later in this patch set, an alternate tty-based implementation will be added.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>

Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

Index: linux-4.10.1/drivers/staging/speakup/serialio.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/serialio.c
+++ linux-4.10.1/drivers/staging/speakup/serialio.c
@@ -24,6 +24,12 @@
static const struct old_serial_port *serstate;
static int timeouts;

+static int spk_serial_out(struct spk_synth *in_synth, const char ch);
+struct spk_io_ops spk_serial_io_ops = {
+ .synth_out = spk_serial_out,
+};
+EXPORT_SYMBOL_GPL(spk_serial_io_ops);
+
const struct old_serial_port *spk_serial_init(int index)
{
int baud = 9600, quot = 0;
@@ -215,7 +221,6 @@
}
return 0;
}
-EXPORT_SYMBOL_GPL(spk_serial_out);

void spk_serial_release(void)
{
Index: linux-4.10.1/drivers/staging/speakup/speakup_acntpc.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_acntpc.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_acntpc.c
@@ -113,6 +113,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = accent_release,
.synth_immediate = synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_acntsa.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_acntsa.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_acntsa.c
@@ -99,6 +99,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_apollo.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_apollo.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_apollo.c
@@ -108,6 +108,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
@@ -169,7 +170,7 @@
set_current_state(TASK_INTERRUPTIBLE);
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
- if (!spk_serial_out(synth, ch)) {
+ 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);
@@ -182,7 +183,7 @@
full_time_val = full_time->u.n.value;
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
- if (spk_serial_out(synth, synth->procspeech))
+ if (synth->io_ops->synth_out(synth, synth->procspeech))
schedule_timeout(msecs_to_jiffies
(delay_time_val));
else
@@ -195,7 +196,7 @@
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
}

module_param_named(ser, synth_apollo.ser, int, S_IRUGO);
Index: linux-4.10.1/drivers/staging/speakup/speakup_audptr.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_audptr.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_audptr.c
@@ -104,6 +104,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
@@ -135,7 +136,7 @@
udelay(1);
}
outb(SYNTH_CLEAR, speakup_info.port_tts);
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
}

static void synth_version(struct spk_synth *synth)
Index: linux-4.10.1/drivers/staging/speakup/speakup_decext.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_decext.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_decext.c
@@ -127,6 +127,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
@@ -186,7 +187,7 @@
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = 0x0D;
- if (synth_full() || !spk_serial_out(synth, ch)) {
+ if (synth_full() || !synth->io_ops->synth_out(synth, ch)) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
@@ -200,10 +201,10 @@
in_escape = 0;
else if (ch <= SPACE) {
if (!in_escape && strchr(",.!?;:", last))
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
if (time_after_eq(jiffies, jiff_max)) {
if (!in_escape)
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
spin_lock_irqsave(&speakup_info.spinlock,
flags);
jiffy_delta_val = jiffy_delta->u.n.value;
@@ -218,7 +219,7 @@
last = ch;
}
if (!in_escape)
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
}

static void synth_flush(struct spk_synth *synth)
Index: linux-4.10.1/drivers/staging/speakup/speakup_dectlk.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_dectlk.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_dectlk.c
@@ -130,6 +130,7 @@
.vars = vars,
.default_pitch = ap_defaults,
.default_vol = g5_defaults,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
@@ -251,7 +252,7 @@
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = 0x0D;
- if (synth_full_val || !spk_serial_out(synth, ch)) {
+ if (synth_full_val || !synth->io_ops->synth_out(synth, ch)) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
@@ -265,10 +266,10 @@
in_escape = 0;
else if (ch <= SPACE) {
if (!in_escape && strchr(",.!?;:", last))
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
if (time_after_eq(jiffies, jiff_max)) {
if (!in_escape)
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
spin_lock_irqsave(&speakup_info.spinlock,
flags);
jiffy_delta_val = jiffy_delta->u.n.value;
@@ -283,17 +284,17 @@
last = ch;
}
if (!in_escape)
- spk_serial_out(synth, PROCSPEECH);
+ synth->io_ops->synth_out(synth, PROCSPEECH);
}

static void synth_flush(struct spk_synth *synth)
{
if (in_escape)
/* if in command output ']' so we don't get an error */
- spk_serial_out(synth, ']');
+ synth->io_ops->synth_out(synth, ']');
in_escape = 0;
is_flushing = 1;
- spk_serial_out(synth, SYNTH_CLEAR);
+ synth->io_ops->synth_out(synth, SYNTH_CLEAR);
}

module_param_named(ser, synth_dectlk.ser, int, S_IRUGO);
Index: linux-4.10.1/drivers/staging/speakup/spk_priv.h
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/spk_priv.h
+++ linux-4.10.1/drivers/staging/speakup/spk_priv.h
@@ -45,7 +45,6 @@
int spk_wait_for_xmitr(struct spk_synth *in_synth);
unsigned char spk_serial_in(void);
unsigned char spk_serial_in_nowait(void);
-int spk_serial_out(struct spk_synth *in_synth, const char ch);
void spk_serial_release(void);

void synth_buffer_skip_nonlatin1(void);
@@ -78,4 +77,6 @@

extern struct var_t synth_time_vars[];

+extern struct spk_io_ops spk_serial_io_ops;
+
#endif
Index: linux-4.10.1/drivers/staging/speakup/spk_types.h
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/spk_types.h
+++ linux-4.10.1/drivers/staging/speakup/spk_types.h
@@ -146,6 +146,12 @@
unsigned char currindex;
};

+struct spk_synth;
+
+struct spk_io_ops {
+ int (*synth_out)(struct spk_synth *synth, const char ch);
+};
+
struct spk_synth {
const char *name;
const char *version;
@@ -164,6 +170,7 @@
struct var_t *vars;
int *default_pitch;
int *default_vol;
+ struct spk_io_ops *io_ops;
int (*probe)(struct spk_synth *synth);
void (*release)(void);
const char *(*synth_immediate)(struct spk_synth *synth,
Index: linux-4.10.1/drivers/staging/speakup/synth.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/synth.c
+++ linux-4.10.1/drivers/staging/speakup/synth.c
@@ -120,7 +120,7 @@
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = synth->procspeech;
- if (!spk_serial_out(synth, ch)) {
+ if (!synth->io_ops->synth_out(synth, ch)) {
schedule_timeout(msecs_to_jiffies(full_time_val));
continue;
}
@@ -130,7 +130,7 @@
delay_time_val = delay_time->u.n.value;
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
- if (spk_serial_out(synth, synth->procspeech))
+ if (synth->io_ops->synth_out(synth, synth->procspeech))
schedule_timeout(
msecs_to_jiffies(delay_time_val));
else
@@ -143,7 +143,7 @@
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
- spk_serial_out(synth, synth->procspeech);
+ synth->io_ops->synth_out(synth, synth->procspeech);
}
EXPORT_SYMBOL_GPL(spk_do_catch_up);

@@ -166,7 +166,7 @@

void spk_synth_flush(struct spk_synth *synth)
{
- spk_serial_out(synth, synth->clear);
+ synth->io_ops->synth_out(synth, synth->clear);
}
EXPORT_SYMBOL_GPL(spk_synth_flush);

Index: linux-4.10.1/drivers/staging/speakup/speakup_bns.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_bns.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_bns.c
@@ -96,6 +96,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_decpc.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_decpc.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_decpc.c
@@ -220,6 +220,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = dtpc_release,
.synth_immediate = synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_dtlk.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_dtlk.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_dtlk.c
@@ -128,6 +128,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = dtlk_release,
.synth_immediate = synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_dummy.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_dummy.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_dummy.c
@@ -98,6 +98,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_keypc.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_keypc.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_keypc.c
@@ -105,6 +105,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = keynote_release,
.synth_immediate = synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_ltlk.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_ltlk.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_ltlk.c
@@ -111,6 +111,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_soft.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_soft.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_soft.c
@@ -131,6 +131,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = NULL,
.probe = softsynth_probe,
.release = softsynth_release,
.synth_immediate = NULL,
Index: linux-4.10.1/drivers/staging/speakup/speakup_spkout.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_spkout.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_spkout.c
@@ -102,6 +102,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
Index: linux-4.10.1/drivers/staging/speakup/speakup_txprt.c
===================================================================
--- linux-4.10.1.orig/drivers/staging/speakup/speakup_txprt.c
+++ linux-4.10.1/drivers/staging/speakup/speakup_txprt.c
@@ -95,6 +95,7 @@
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
+ .io_ops = &spk_serial_io_ops,
.probe = spk_serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
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