diff options
Diffstat (limited to 'drivers/accessibility/speakup/speakup_acntpc.c')
| -rw-r--r-- | drivers/accessibility/speakup/speakup_acntpc.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/speakup_acntpc.c b/drivers/accessibility/speakup/speakup_acntpc.c new file mode 100644 index 000000000000..c94328a5bd4a --- /dev/null +++ b/drivers/accessibility/speakup/speakup_acntpc.c @@ -0,0 +1,319 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * written by: Kirk Reiser <kirk@braille.uwo.ca> + * this version considerably modified by David Borowski, david575@rogers.com + * + * Copyright (C) 1998-99 Kirk Reiser. + * Copyright (C) 2003 David Borowski. + * + * this code is specificly written as a driver for the speakup screenreview + * package and is not a general device driver. + * This driver is for the Aicom Acent PC internal synthesizer. + */ + +#include <linux/jiffies.h> +#include <linux/sched.h> +#include <linux/timer.h> +#include <linux/kthread.h> + +#include "spk_priv.h" +#include "serialio.h" +#include "speakup.h" +#include "speakup_acnt.h" /* local header file for Accent values */ + +#define DRV_VERSION "2.10" +#define PROCSPEECH '\r' + +static int synth_probe(struct spk_synth *synth); +static void accent_release(void); +static const char *synth_immediate(struct spk_synth *synth, const char *buf); +static void do_catch_up(struct spk_synth *synth); +static void synth_flush(struct spk_synth *synth); + +static int synth_port_control; +static int port_forced; +static unsigned int synth_portlist[] = { 0x2a8, 0 }; + +static struct var_t vars[] = { + { CAPS_START, .u.s = {"\033P8" } }, + { CAPS_STOP, .u.s = {"\033P5" } }, + { RATE, .u.n = {"\033R%c", 9, 0, 17, 0, 0, "0123456789abcdefgh" } }, + { PITCH, .u.n = {"\033P%d", 5, 0, 9, 0, 0, NULL } }, + { VOL, .u.n = {"\033A%d", 5, 0, 9, 0, 0, NULL } }, + { TONE, .u.n = {"\033V%d", 5, 0, 9, 0, 0, NULL } }, + { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } }, + V_LAST_VAR +}; + +/* + * These attributes will appear in /sys/accessibility/speakup/acntpc. + */ +static struct kobj_attribute caps_start_attribute = + __ATTR(caps_start, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute caps_stop_attribute = + __ATTR(caps_stop, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute pitch_attribute = + __ATTR(pitch, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute rate_attribute = + __ATTR(rate, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute tone_attribute = + __ATTR(tone, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute vol_attribute = + __ATTR(vol, 0644, spk_var_show, spk_var_store); + +static struct kobj_attribute delay_time_attribute = + __ATTR(delay_time, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute direct_attribute = + __ATTR(direct, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute full_time_attribute = + __ATTR(full_time, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute jiffy_delta_attribute = + __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store); +static struct kobj_attribute trigger_time_attribute = + __ATTR(trigger_time, 0644, spk_var_show, spk_var_store); + +/* + * Create a group of attributes so that we can create and destroy them all + * at once. + */ +static struct attribute *synth_attrs[] = { + &caps_start_attribute.attr, + &caps_stop_attribute.attr, + &pitch_attribute.attr, + &rate_attribute.attr, + &tone_attribute.attr, + &vol_attribute.attr, + &delay_time_attribute.attr, + &direct_attribute.attr, + &full_time_attribute.attr, + &jiffy_delta_attribute.attr, + &trigger_time_attribute.attr, + NULL, /* need to NULL terminate the list of attributes */ +}; + +static struct spk_synth synth_acntpc = { + .name = "acntpc", + .version = DRV_VERSION, + .long_name = "Accent PC", + .init = "\033=X \033Oi\033T2\033=M\033N1\n", + .procspeech = PROCSPEECH, + .clear = SYNTH_CLEAR, + .delay = 500, + .trigger = 50, + .jiffies = 50, + .full = 1000, + .startup = SYNTH_START, + .checkval = SYNTH_CHECK, + .vars = vars, + .io_ops = &spk_serial_io_ops, + .probe = synth_probe, + .release = accent_release, + .synth_immediate = synth_immediate, + .catch_up = do_catch_up, + .flush = synth_flush, + .is_alive = spk_synth_is_alive_nop, + .synth_adjust = NULL, + .read_buff_add = NULL, + .get_index = NULL, + .indexing = { + .command = NULL, + .lowindex = 0, + .highindex = 0, + .currindex = 0, + }, + .attributes = { + .attrs = synth_attrs, + .name = "acntpc", + }, +}; + +static inline bool synth_writable(void) +{ + return inb_p(synth_port_control) & SYNTH_WRITABLE; +} + +static inline bool synth_full(void) +{ + return inb_p(speakup_info.port_tts + UART_RX) == 'F'; +} + +static const char *synth_immediate(struct spk_synth *synth, const char *buf) +{ + u_char ch; + + while ((ch = *buf)) { + int timeout = SPK_XMITR_TIMEOUT; + + if (ch == '\n') + ch = PROCSPEECH; + if (synth_full()) + return buf; + while (synth_writable()) { + if (!--timeout) + return buf; + udelay(1); + } + outb_p(ch, speakup_info.port_tts); + buf++; + } + return NULL; +} + +static void do_catch_up(struct spk_synth *synth) +{ + u_char ch; + unsigned long flags; + unsigned long jiff_max; + int timeout; + int delay_time_val; + int jiffy_delta_val; + int full_time_val; + struct var_t *delay_time; + struct var_t *full_time; + struct var_t *jiffy_delta; + + jiffy_delta = spk_get_var(JIFFY); + delay_time = spk_get_var(DELAY); + full_time = spk_get_var(FULL); + + spin_lock_irqsave(&speakup_info.spinlock, flags); + jiffy_delta_val = jiffy_delta->u.n.value; + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + + jiff_max = jiffies + jiffy_delta_val; + while (!kthread_should_stop()) { + spin_lock_irqsave(&speakup_info.spinlock, flags); + if (speakup_info.flushing) { + speakup_info.flushing = 0; + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + synth->flush(synth); + continue; + } + synth_buffer_skip_nonlatin1(); + if (synth_buffer_empty()) { + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + break; + } + set_current_state(TASK_INTERRUPTIBLE); + full_time_val = full_time->u.n.value; + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + if (synth_full()) { + schedule_timeout(msecs_to_jiffies(full_time_val)); + continue; + } + set_current_state(TASK_RUNNING); + timeout = SPK_XMITR_TIMEOUT; + while (synth_writable()) { + if (!--timeout) + break; + udelay(1); + } + spin_lock_irqsave(&speakup_info.spinlock, flags); + ch = synth_buffer_getc(); + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + if (ch == '\n') + ch = PROCSPEECH; + outb_p(ch, speakup_info.port_tts); + if (time_after_eq(jiffies, jiff_max) && ch == SPACE) { + timeout = SPK_XMITR_TIMEOUT; + while (synth_writable()) { + if (!--timeout) + break; + udelay(1); + } + outb_p(PROCSPEECH, speakup_info.port_tts); + spin_lock_irqsave(&speakup_info.spinlock, flags); + jiffy_delta_val = jiffy_delta->u.n.value; + delay_time_val = delay_time->u.n.value; + spin_unlock_irqrestore(&speakup_info.spinlock, flags); + schedule_timeout(msecs_to_jiffies(delay_time_val)); + jiff_max = jiffies + jiffy_delta_val; + } + } + timeout = SPK_XMITR_TIMEOUT; + while (synth_writable()) { + if (!--timeout) + break; + udelay(1); + } + outb_p(PROCSPEECH, speakup_info.port_tts); +} + +static void synth_flush(struct spk_synth *synth) +{ + outb_p(SYNTH_CLEAR, speakup_info.port_tts); +} + +static int synth_probe(struct spk_synth *synth) +{ + unsigned int port_val = 0; + int i = 0; + + pr_info("Probing for %s.\n", synth->long_name); + if (port_forced) { + speakup_info.port_tts = port_forced; + pr_info("probe forced to %x by kernel command line\n", + speakup_info.port_tts); + if (synth_request_region(speakup_info.port_tts - 1, + SYNTH_IO_EXTENT)) { + pr_warn("sorry, port already reserved\n"); + return -EBUSY; + } + port_val = inw(speakup_info.port_tts - 1); + synth_port_control = speakup_info.port_tts - 1; + } else { + for (i = 0; synth_portlist[i]; i++) { + if (synth_request_region(synth_portlist[i], + SYNTH_IO_EXTENT)) { + pr_warn + ("request_region: failed with 0x%x, %d\n", + synth_portlist[i], SYNTH_IO_EXTENT); + continue; + } + port_val = inw(synth_portlist[i]) & 0xfffc; + if (port_val == 0x53fc) { + /* 'S' and out&input bits */ + synth_port_control = synth_portlist[i]; + speakup_info.port_tts = synth_port_control + 1; + break; + } + } + } + port_val &= 0xfffc; + if (port_val != 0x53fc) { + /* 'S' and out&input bits */ + pr_info("%s: not found\n", synth->long_name); + synth_release_region(synth_port_control, SYNTH_IO_EXTENT); + synth_port_control = 0; + return -ENODEV; + } + pr_info("%s: %03x-%03x, driver version %s,\n", synth->long_name, + synth_port_control, synth_port_control + SYNTH_IO_EXTENT - 1, + synth->version); + synth->alive = 1; + return 0; +} + +static void accent_release(void) +{ + spk_stop_serial_interrupt(); + if (speakup_info.port_tts) + synth_release_region(speakup_info.port_tts - 1, + SYNTH_IO_EXTENT); + speakup_info.port_tts = 0; +} + +module_param_hw_named(port, port_forced, int, ioport, 0444); +module_param_named(start, synth_acntpc.startup, short, 0444); + +MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing)."); +MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded."); + +module_spk_synth(synth_acntpc); + +MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>"); +MODULE_AUTHOR("David Borowski"); +MODULE_DESCRIPTION("Speakup support for Accent PC synthesizer"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + |