50 static int exynos_bus_##ops(struct exynos_bus *bus)		\
54 	for (i = 0; i < bus->edev_count; i++) {			\
55 		if (!bus->edev[i])				\
57 		ret = devfreq_event_##ops(bus->edev[i]);	\
68 static int exynos_bus_get_event(struct exynos_bus *bus,  in exynos_bus_get_event()  argument
75 	for (i = 0; i < bus->edev_count; i++) {  in exynos_bus_get_event()
76 		if (!bus->edev[i])  in exynos_bus_get_event()
79 		ret = devfreq_event_get_event(bus->edev[i], &event_data);  in exynos_bus_get_event()
100 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_target()  local
116 	old_freq = bus->curr_freq;  in exynos_bus_target()
120 	tol = new_volt * bus->voltage_tolerance / 100;  in exynos_bus_target()
123 	mutex_lock(&bus->lock);  in exynos_bus_target()
126 		ret = regulator_set_voltage_tol(bus->regulator, new_volt, tol);  in exynos_bus_target()
128 			dev_err(bus->dev, "failed to set voltage\n");  in exynos_bus_target()
133 	ret = clk_set_rate(bus->clk, new_freq);  in exynos_bus_target()
136 		clk_set_rate(bus->clk, old_freq);  in exynos_bus_target()
141 		ret = regulator_set_voltage_tol(bus->regulator, new_volt, tol);  in exynos_bus_target()
143 			dev_err(bus->dev, "failed to set voltage\n");  in exynos_bus_target()
147 	bus->curr_freq = new_freq;  in exynos_bus_target()
150 			old_freq, new_freq, clk_get_rate(bus->clk));  in exynos_bus_target()
152 	mutex_unlock(&bus->lock);  in exynos_bus_target()
160 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_get_dev_status()  local
164 	stat->current_frequency = bus->curr_freq;  in exynos_bus_get_dev_status()
166 	ret = exynos_bus_get_event(bus, &edata);  in exynos_bus_get_dev_status()
172 	stat->busy_time = (edata.load_count * 100) / bus->ratio;  in exynos_bus_get_dev_status()
179 	ret = exynos_bus_set_event(bus);  in exynos_bus_get_dev_status()
190 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_exit()  local
193 	ret = exynos_bus_disable_edev(bus);  in exynos_bus_exit()
197 	if (bus->regulator)  in exynos_bus_exit()
198 		regulator_disable(bus->regulator);  in exynos_bus_exit()
201 	clk_disable_unprepare(bus->clk);  in exynos_bus_exit()
210 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_passive_target()  local
225 	old_freq = bus->curr_freq;  in exynos_bus_passive_target()
231 	mutex_lock(&bus->lock);  in exynos_bus_passive_target()
233 	ret = clk_set_rate(bus->clk, new_freq);  in exynos_bus_passive_target()
240 	bus->curr_freq = new_freq;  in exynos_bus_passive_target()
243 			old_freq, new_freq, clk_get_rate(bus->clk));  in exynos_bus_passive_target()
245 	mutex_unlock(&bus->lock);  in exynos_bus_passive_target()
252 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_passive_exit()  local
255 	clk_disable_unprepare(bus->clk);  in exynos_bus_passive_exit()
259 					struct exynos_bus *bus)  in exynos_bus_parent_parse_of()  argument
261 	struct device *dev = bus->dev;  in exynos_bus_parent_parse_of()
265 	bus->regulator = devm_regulator_get(dev, "vdd");  in exynos_bus_parent_parse_of()
266 	if (IS_ERR(bus->regulator)) {  in exynos_bus_parent_parse_of()
268 		return PTR_ERR(bus->regulator);  in exynos_bus_parent_parse_of()
271 	ret = regulator_enable(bus->regulator);  in exynos_bus_parent_parse_of()
287 	bus->edev_count = count;  in exynos_bus_parent_parse_of()
289 	size = sizeof(*bus->edev) * count;  in exynos_bus_parent_parse_of()
290 	bus->edev = devm_kzalloc(dev, size, GFP_KERNEL);  in exynos_bus_parent_parse_of()
291 	if (!bus->edev) {  in exynos_bus_parent_parse_of()
297 		bus->edev[i] = devfreq_event_get_edev_by_phandle(dev, i);  in exynos_bus_parent_parse_of()
298 		if (IS_ERR(bus->edev[i])) {  in exynos_bus_parent_parse_of()
314 	if (of_property_read_u32(np, "exynos,saturation-ratio", &bus->ratio))  in exynos_bus_parent_parse_of()
315 		bus->ratio = DEFAULT_SATURATION_RATIO;  in exynos_bus_parent_parse_of()
318 					&bus->voltage_tolerance))  in exynos_bus_parent_parse_of()
319 		bus->voltage_tolerance = DEFAULT_VOLTAGE_TOLERANCE;  in exynos_bus_parent_parse_of()
324 	regulator_disable(bus->regulator);  in exynos_bus_parent_parse_of()
330 			      struct exynos_bus *bus)  in exynos_bus_parse_of()  argument
332 	struct device *dev = bus->dev;  in exynos_bus_parse_of()
338 	bus->clk = devm_clk_get(dev, "bus");  in exynos_bus_parse_of()
339 	if (IS_ERR(bus->clk)) {  in exynos_bus_parse_of()
341 		return PTR_ERR(bus->clk);  in exynos_bus_parse_of()
344 	ret = clk_prepare_enable(bus->clk);  in exynos_bus_parse_of()
357 	rate = clk_get_rate(bus->clk);  in exynos_bus_parse_of()
365 	bus->curr_freq = dev_pm_opp_get_freq(opp);  in exynos_bus_parse_of()
373 	clk_disable_unprepare(bus->clk);  in exynos_bus_parse_of()
386 	struct exynos_bus *bus;  in exynos_bus_probe()  local
395 	bus = devm_kzalloc(&pdev->dev, sizeof(*bus), GFP_KERNEL);  in exynos_bus_probe()
396 	if (!bus)  in exynos_bus_probe()
398 	mutex_init(&bus->lock);  in exynos_bus_probe()
399 	bus->dev = &pdev->dev;  in exynos_bus_probe()
400 	platform_set_drvdata(pdev, bus);  in exynos_bus_probe()
403 	ret = exynos_bus_parse_of(np, bus);  in exynos_bus_probe()
418 		ret = exynos_bus_parent_parse_of(np, bus);  in exynos_bus_probe()
439 	bus->devfreq = devm_devfreq_add_device(dev, profile,  in exynos_bus_probe()
442 	if (IS_ERR(bus->devfreq)) {  in exynos_bus_probe()
444 		ret = PTR_ERR(bus->devfreq);  in exynos_bus_probe()
449 	ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq);  in exynos_bus_probe()
459 	ret = exynos_bus_enable_edev(bus);  in exynos_bus_probe()
465 	ret = exynos_bus_set_event(bus);  in exynos_bus_probe()
492 	bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,  in exynos_bus_probe()
494 	if (IS_ERR(bus->devfreq)) {  in exynos_bus_probe()
497 		ret = PTR_ERR(bus->devfreq);  in exynos_bus_probe()
502 	max_state = bus->devfreq->profile->max_state;  in exynos_bus_probe()
503 	min_freq = (bus->devfreq->profile->freq_table[0] / 1000);  in exynos_bus_probe()
504 	max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);  in exynos_bus_probe()
512 	clk_disable_unprepare(bus->clk);  in exynos_bus_probe()
520 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_resume()  local
523 	ret = exynos_bus_enable_edev(bus);  in exynos_bus_resume()
534 	struct exynos_bus *bus = dev_get_drvdata(dev);  in exynos_bus_suspend()  local
537 	ret = exynos_bus_disable_edev(bus);  in exynos_bus_suspend()