| H A D | ir-rx51.c | 40 #define DRIVER_NAME "lirc_rx51"
46 struct lirc_rx51 { struct
64 static void lirc_rx51_on(struct lirc_rx51 *lirc_rx51) lirc_rx51_on() argument
66 omap_dm_timer_set_pwm(lirc_rx51->pwm_timer, 0, 1, lirc_rx51_on()
70 static void lirc_rx51_off(struct lirc_rx51 *lirc_rx51) lirc_rx51_off() argument
72 omap_dm_timer_set_pwm(lirc_rx51->pwm_timer, 0, 1, lirc_rx51_off()
76 static int init_timing_params(struct lirc_rx51 *lirc_rx51) init_timing_params() argument
80 load = -(lirc_rx51->fclk_khz * 1000 / lirc_rx51->freq); init_timing_params()
81 match = -(lirc_rx51->duty_cycle * -load / 100); init_timing_params()
82 omap_dm_timer_set_load(lirc_rx51->pwm_timer, 1, load); init_timing_params()
83 omap_dm_timer_set_match(lirc_rx51->pwm_timer, 1, match); init_timing_params()
84 omap_dm_timer_write_counter(lirc_rx51->pwm_timer, TIMER_MAX_VALUE - 2); init_timing_params()
85 omap_dm_timer_start(lirc_rx51->pwm_timer); init_timing_params()
86 omap_dm_timer_set_int_enable(lirc_rx51->pulse_timer, 0); init_timing_params()
87 omap_dm_timer_start(lirc_rx51->pulse_timer); init_timing_params()
89 lirc_rx51->match = 0; init_timing_params()
96 static int pulse_timer_set_timeout(struct lirc_rx51 *lirc_rx51, int usec) pulse_timer_set_timeout() argument
102 if (lirc_rx51->match == 0) pulse_timer_set_timeout()
103 counter = omap_dm_timer_read_counter(lirc_rx51->pulse_timer); pulse_timer_set_timeout()
105 counter = lirc_rx51->match; pulse_timer_set_timeout()
107 counter += (u32)(lirc_rx51->fclk_khz * usec / (1000)); pulse_timer_set_timeout()
108 omap_dm_timer_set_match(lirc_rx51->pulse_timer, 1, counter); pulse_timer_set_timeout()
109 omap_dm_timer_set_int_enable(lirc_rx51->pulse_timer, pulse_timer_set_timeout()
111 if (tics_after(omap_dm_timer_read_counter(lirc_rx51->pulse_timer), pulse_timer_set_timeout()
121 struct lirc_rx51 *lirc_rx51 = ptr; lirc_rx51_interrupt_handler() local
123 retval = omap_dm_timer_read_status(lirc_rx51->pulse_timer); lirc_rx51_interrupt_handler()
128 dev_err_ratelimited(lirc_rx51->dev, lirc_rx51_interrupt_handler()
131 omap_dm_timer_write_status(lirc_rx51->pulse_timer, lirc_rx51_interrupt_handler()
135 if (lirc_rx51->wbuf_index < 0) { lirc_rx51_interrupt_handler()
136 dev_err_ratelimited(lirc_rx51->dev, lirc_rx51_interrupt_handler()
138 lirc_rx51->wbuf_index); lirc_rx51_interrupt_handler()
147 if (lirc_rx51->wbuf_index >= WBUF_LEN) lirc_rx51_interrupt_handler()
149 if (lirc_rx51->wbuf[lirc_rx51->wbuf_index] == -1) lirc_rx51_interrupt_handler()
152 if (lirc_rx51->wbuf_index % 2) lirc_rx51_interrupt_handler()
153 lirc_rx51_off(lirc_rx51); lirc_rx51_interrupt_handler()
155 lirc_rx51_on(lirc_rx51); lirc_rx51_interrupt_handler()
157 retval = pulse_timer_set_timeout(lirc_rx51, lirc_rx51_interrupt_handler()
158 lirc_rx51->wbuf[lirc_rx51->wbuf_index]); lirc_rx51_interrupt_handler()
159 lirc_rx51->wbuf_index++; lirc_rx51_interrupt_handler()
166 lirc_rx51_off(lirc_rx51); lirc_rx51_interrupt_handler()
167 lirc_rx51->wbuf_index = -1; lirc_rx51_interrupt_handler()
168 omap_dm_timer_stop(lirc_rx51->pwm_timer); lirc_rx51_interrupt_handler()
169 omap_dm_timer_stop(lirc_rx51->pulse_timer); lirc_rx51_interrupt_handler()
170 omap_dm_timer_set_int_enable(lirc_rx51->pulse_timer, 0); lirc_rx51_interrupt_handler()
171 wake_up_interruptible(&lirc_rx51->wqueue); lirc_rx51_interrupt_handler()
176 static int lirc_rx51_init_port(struct lirc_rx51 *lirc_rx51) lirc_rx51_init_port() argument
179 int retval, pwm_timer = lirc_rx51->pwm_timer_num; lirc_rx51_init_port()
181 lirc_rx51->pwm_timer = omap_dm_timer_request_specific(pwm_timer); lirc_rx51_init_port()
182 if (lirc_rx51->pwm_timer == NULL) { lirc_rx51_init_port()
183 dev_err(lirc_rx51->dev, ": Error requesting GPT%d timer\n", lirc_rx51_init_port()
188 lirc_rx51->pulse_timer = omap_dm_timer_request(); lirc_rx51_init_port()
189 if (lirc_rx51->pulse_timer == NULL) { lirc_rx51_init_port()
190 dev_err(lirc_rx51->dev, ": Error requesting pulse timer\n"); lirc_rx51_init_port()
195 omap_dm_timer_set_source(lirc_rx51->pwm_timer, OMAP_TIMER_SRC_SYS_CLK); lirc_rx51_init_port()
196 omap_dm_timer_set_source(lirc_rx51->pulse_timer, lirc_rx51_init_port()
199 omap_dm_timer_enable(lirc_rx51->pwm_timer); lirc_rx51_init_port()
200 omap_dm_timer_enable(lirc_rx51->pulse_timer); lirc_rx51_init_port()
202 lirc_rx51->irq_num = omap_dm_timer_get_irq(lirc_rx51->pulse_timer); lirc_rx51_init_port()
203 retval = request_irq(lirc_rx51->irq_num, lirc_rx51_interrupt_handler, lirc_rx51_init_port()
204 IRQF_SHARED, "lirc_pulse_timer", lirc_rx51); lirc_rx51_init_port()
206 dev_err(lirc_rx51->dev, ": Failed to request interrupt line\n"); lirc_rx51_init_port()
210 clk_fclk = omap_dm_timer_get_fclk(lirc_rx51->pwm_timer); lirc_rx51_init_port()
211 lirc_rx51->fclk_khz = clk_fclk->rate / 1000; lirc_rx51_init_port()
216 omap_dm_timer_free(lirc_rx51->pulse_timer); lirc_rx51_init_port()
218 omap_dm_timer_free(lirc_rx51->pwm_timer); lirc_rx51_init_port()
223 static int lirc_rx51_free_port(struct lirc_rx51 *lirc_rx51) lirc_rx51_free_port() argument
225 omap_dm_timer_set_int_enable(lirc_rx51->pulse_timer, 0); lirc_rx51_free_port()
226 free_irq(lirc_rx51->irq_num, lirc_rx51); lirc_rx51_free_port()
227 lirc_rx51_off(lirc_rx51); lirc_rx51_free_port()
228 omap_dm_timer_disable(lirc_rx51->pwm_timer); lirc_rx51_free_port()
229 omap_dm_timer_disable(lirc_rx51->pulse_timer); lirc_rx51_free_port()
230 omap_dm_timer_free(lirc_rx51->pwm_timer); lirc_rx51_free_port()
231 omap_dm_timer_free(lirc_rx51->pulse_timer); lirc_rx51_free_port()
232 lirc_rx51->wbuf_index = -1; lirc_rx51_free_port()
241 struct lirc_rx51 *lirc_rx51 = file->private_data; lirc_rx51_write() local
251 wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0); lirc_rx51_write()
253 if (copy_from_user(lirc_rx51->wbuf, buf, n)) lirc_rx51_write()
258 if (lirc_rx51->wbuf[i] < 0) lirc_rx51_write()
261 init_timing_params(lirc_rx51); lirc_rx51_write()
263 lirc_rx51->wbuf[count] = -1; /* Insert termination mark */ lirc_rx51_write()
269 lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, 50); lirc_rx51_write()
271 lirc_rx51_on(lirc_rx51); lirc_rx51_write()
272 lirc_rx51->wbuf_index = 1; lirc_rx51_write()
273 pulse_timer_set_timeout(lirc_rx51, lirc_rx51->wbuf[0]); lirc_rx51_write()
279 wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0); lirc_rx51_write()
282 lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, -1); lirc_rx51_write()
293 struct lirc_rx51 *lirc_rx51 = filep->private_data; lirc_rx51_ioctl() local
328 dev_err(lirc_rx51->dev, ": invalid duty cycle %d\n", lirc_rx51_ioctl()
333 lirc_rx51->duty_cycle = ivalue; lirc_rx51_ioctl()
342 dev_err(lirc_rx51->dev, ": invalid carrier freq %d\n", lirc_rx51_ioctl()
347 lirc_rx51->freq = ivalue; lirc_rx51_ioctl()
366 struct lirc_rx51 *lirc_rx51 = lirc_get_pdata(file); lirc_rx51_open() local
367 BUG_ON(!lirc_rx51); lirc_rx51_open()
369 file->private_data = lirc_rx51; lirc_rx51_open()
371 if (test_and_set_bit(1, &lirc_rx51->device_is_open)) lirc_rx51_open()
374 return lirc_rx51_init_port(lirc_rx51); lirc_rx51_open()
379 struct lirc_rx51 *lirc_rx51 = file->private_data; lirc_rx51_release() local
381 lirc_rx51_free_port(lirc_rx51); lirc_rx51_release()
383 clear_bit(1, &lirc_rx51->device_is_open); lirc_rx51_release()
388 static struct lirc_rx51 lirc_rx51 = { variable in typeref:struct:lirc_rx51
408 .data = &lirc_rx51,
425 if (test_and_set_bit(1, &lirc_rx51.device_is_open)) lirc_rx51_suspend()
428 clear_bit(1, &lirc_rx51.device_is_open); lirc_rx51_suspend()
448 lirc_rx51.pdata = dev->dev.platform_data; lirc_rx51_probe()
449 lirc_rx51.pwm_timer_num = lirc_rx51.pdata->pwm_timer; lirc_rx51_probe()
450 lirc_rx51.dev = &dev->dev; lirc_rx51_probe()
453 init_waitqueue_head(&lirc_rx51.wqueue); lirc_rx51_probe()
456 dev_err(lirc_rx51.dev, ": lirc_register_driver failed: %d\n", lirc_rx51_probe()
460 dev_info(lirc_rx51.dev, "registration ok, minor: %d, pwm: %d\n", lirc_rx51_probe()
461 lirc_rx51_driver.minor, lirc_rx51.pwm_timer_num); lirc_rx51_probe()
|