drivers/counter/ti-ecap-capture.c

10 #include <linux/counter.h>
86  * @pm_ctx.time_cntr: timestamp counter value
100 static u8 ecap_cnt_capture_get_evmode(struct counter_device *counter)
102 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
105 	pm_runtime_get_sync(counter->parent);
107 	pm_runtime_put_sync(counter->parent);
112 static void ecap_cnt_capture_set_evmode(struct counter_device *counter, u8 ev_mode)
114 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
116 	pm_runtime_get_sync(counter->parent);
118 	pm_runtime_put_sync(counter->parent);
121 static void ecap_cnt_capture_enable(struct counter_device *counter)
123 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
125 	pm_runtime_get_sync(counter->parent);
131 	/* Run counter */
136 static void ecap_cnt_capture_disable(struct counter_device *counter)
138 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
140 	/* Stop counter */
146 	pm_runtime_put_sync(counter->parent);
149 static u32 ecap_cnt_count_get_val(struct counter_device *counter, unsigned int reg)
151 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
154 	pm_runtime_get_sync(counter->parent);
156 	pm_runtime_put_sync(counter->parent);
161 static void ecap_cnt_count_set_val(struct counter_device *counter, unsigned int reg, u32 val)
163 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
165 	pm_runtime_get_sync(counter->parent);
167 	pm_runtime_put_sync(counter->parent);
170 static int ecap_cnt_count_read(struct counter_device *counter,
173 	*val = ecap_cnt_count_get_val(counter, ECAP_TSCNT_REG);
178 static int ecap_cnt_count_write(struct counter_device *counter,
184 	ecap_cnt_count_set_val(counter, ECAP_TSCNT_REG, val);
189 static int ecap_cnt_function_read(struct counter_device *counter,
198 static int ecap_cnt_action_read(struct counter_device *counter,
210 static int ecap_cnt_watch_validate(struct counter_device *counter,
225 static int ecap_cnt_clk_get_freq(struct counter_device *counter,
228 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
235 static int ecap_cnt_pol_read(struct counter_device *counter,
239 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
242 	pm_runtime_get_sync(counter->parent);
244 	pm_runtime_put_sync(counter->parent);
251 static int ecap_cnt_pol_write(struct counter_device *counter,
255 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
257 	pm_runtime_get_sync(counter->parent);
262 	pm_runtime_put_sync(counter->parent);
267 static int ecap_cnt_cap_read(struct counter_device *counter,
271 	*cap = ecap_cnt_count_get_val(counter, ECAP_CAP_REG(idx));
276 static int ecap_cnt_cap_write(struct counter_device *counter,
283 	ecap_cnt_count_set_val(counter, ECAP_CAP_REG(idx), cap);
288 static int ecap_cnt_nb_ovf_read(struct counter_device *counter,
291 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
298 static int ecap_cnt_nb_ovf_write(struct counter_device *counter,
301 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
311 static int ecap_cnt_ceiling_read(struct counter_device *counter,
319 static int ecap_cnt_enable_read(struct counter_device *counter,
322 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
329 static int ecap_cnt_enable_write(struct counter_device *counter,
332 	struct ecap_cnt_dev *ecap_dev = counter_priv(counter);
340 		ecap_cnt_capture_enable(counter);
342 		ecap_cnt_capture_disable(counter);
454 	/* Check counter overflow */
535 		return dev_err_probe(dev, ret, "failed to add counter\n");
554 	/* If eCAP is running, stop capture then save timestamp counter */
560 		 * - timebase counter is stopped
582 	/* If eCAP was running, restore timestamp counter then run capture */