[linux-2.6-block.git] / drivers / clocksource / ingenic-timer.c

// SPDX-License-Identifier: GPL-2.0
/*
 * JZ47xx SoCs TCU IRQ driver
 * Copyright (C) 2019 Paul Cercueil <paul@crapouillou.net>
 */

#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/clockchips.h>
#include <linux/clocksource.h>
#include <linux/interrupt.h>
#include <linux/mfd/ingenic-tcu.h>
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/sched_clock.h>

#include <dt-bindings/clock/ingenic,tcu.h>

struct ingenic_soc_info {
	unsigned int num_channels;
};

struct ingenic_tcu {
	struct regmap *map;
	struct clk *timer_clk, *cs_clk;
	unsigned int timer_channel, cs_channel;
	struct clock_event_device cevt;
	struct clocksource cs;
	char name[4];
	unsigned long pwm_channels_mask;
};

static struct ingenic_tcu *ingenic_tcu;

static u64 notrace ingenic_tcu_timer_read(void)
{
	struct ingenic_tcu *tcu = ingenic_tcu;
	unsigned int count;

	regmap_read(tcu->map, TCU_REG_TCNTc(tcu->cs_channel), &count);

	return count;
}

static u64 notrace ingenic_tcu_timer_cs_read(struct clocksource *cs)
{
	return ingenic_tcu_timer_read();
}

static inline struct ingenic_tcu *to_ingenic_tcu(struct clock_event_device *evt)
{
	return container_of(evt, struct ingenic_tcu, cevt);
}

static int ingenic_tcu_cevt_set_state_shutdown(struct clock_event_device *evt)
{
	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);

	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));

	return 0;
}

static int ingenic_tcu_cevt_set_next(unsigned long next,
				     struct clock_event_device *evt)
{
	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);

	if (next > 0xffff)
		return -EINVAL;

	regmap_write(tcu->map, TCU_REG_TDFRc(tcu->timer_channel), next);
	regmap_write(tcu->map, TCU_REG_TCNTc(tcu->timer_channel), 0);
	regmap_write(tcu->map, TCU_REG_TESR, BIT(tcu->timer_channel));

	return 0;
}

static irqreturn_t ingenic_tcu_cevt_cb(int irq, void *dev_id)
{
	struct clock_event_device *evt = dev_id;
	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);

	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));

	if (evt->event_handler)
		evt->event_handler(evt);

	return IRQ_HANDLED;
}

static struct clk * __init ingenic_tcu_get_clock(struct device_node *np, int id)
{
	struct of_phandle_args args;

	args.np = np;
	args.args_count = 1;
	args.args[0] = id;

	return of_clk_get_from_provider(&args);
}

static int __init ingenic_tcu_timer_init(struct device_node *np,
					 struct ingenic_tcu *tcu)
{
	unsigned int timer_virq, channel = tcu->timer_channel;
	struct irq_domain *domain;
	unsigned long rate;
	int err;

	tcu->timer_clk = ingenic_tcu_get_clock(np, channel);
	if (IS_ERR(tcu->timer_clk))
		return PTR_ERR(tcu->timer_clk);

	err = clk_prepare_enable(tcu->timer_clk);
	if (err)
		goto err_clk_put;

	rate = clk_get_rate(tcu->timer_clk);
	if (!rate) {
		err = -EINVAL;
		goto err_clk_disable;
	}

	domain = irq_find_host(np);
	if (!domain) {
		err = -ENODEV;
		goto err_clk_disable;
	}

	timer_virq = irq_create_mapping(domain, channel);
	if (!timer_virq) {
		err = -EINVAL;
		goto err_clk_disable;
	}

	snprintf(tcu->name, sizeof(tcu->name), "TCU");

	err = request_irq(timer_virq, ingenic_tcu_cevt_cb, IRQF_TIMER,
			  tcu->name, &tcu->cevt);
	if (err)
		goto err_irq_dispose_mapping;

	tcu->cevt.cpumask = cpumask_of(smp_processor_id());
	tcu->cevt.features = CLOCK_EVT_FEAT_ONESHOT;
	tcu->cevt.name = tcu->name;
	tcu->cevt.rating = 200;
	tcu->cevt.set_state_shutdown = ingenic_tcu_cevt_set_state_shutdown;
	tcu->cevt.set_next_event = ingenic_tcu_cevt_set_next;

	clockevents_config_and_register(&tcu->cevt, rate, 10, 0xffff);

	return 0;

err_irq_dispose_mapping:
	irq_dispose_mapping(timer_virq);
err_clk_disable:
	clk_disable_unprepare(tcu->timer_clk);
err_clk_put:
	clk_put(tcu->timer_clk);
	return err;
}

static int __init ingenic_tcu_clocksource_init(struct device_node *np,
					       struct ingenic_tcu *tcu)
{
	unsigned int channel = tcu->cs_channel;
	struct clocksource *cs = &tcu->cs;
	unsigned long rate;
	int err;

	tcu->cs_clk = ingenic_tcu_get_clock(np, channel);
	if (IS_ERR(tcu->cs_clk))
		return PTR_ERR(tcu->cs_clk);

	err = clk_prepare_enable(tcu->cs_clk);
	if (err)
		goto err_clk_put;

	rate = clk_get_rate(tcu->cs_clk);
	if (!rate) {
		err = -EINVAL;
		goto err_clk_disable;
	}

	/* Reset channel */
	regmap_update_bits(tcu->map, TCU_REG_TCSRc(channel),
			   0xffff & ~TCU_TCSR_RESERVED_BITS, 0);

	/* Reset counter */
	regmap_write(tcu->map, TCU_REG_TDFRc(channel), 0xffff);
	regmap_write(tcu->map, TCU_REG_TCNTc(channel), 0);

	/* Enable channel */
	regmap_write(tcu->map, TCU_REG_TESR, BIT(channel));

	cs->name = "ingenic-timer";
	cs->rating = 200;
	cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
	cs->mask = CLOCKSOURCE_MASK(16);
	cs->read = ingenic_tcu_timer_cs_read;

	err = clocksource_register_hz(cs, rate);
	if (err)
		goto err_clk_disable;

	return 0;

err_clk_disable:
	clk_disable_unprepare(tcu->cs_clk);
err_clk_put:
	clk_put(tcu->cs_clk);
	return err;
}

static const struct ingenic_soc_info jz4740_soc_info = {
	.num_channels = 8,
};

static const struct ingenic_soc_info jz4725b_soc_info = {
	.num_channels = 6,
};

static const struct of_device_id ingenic_tcu_of_match[] = {
	{ .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, },
	{ .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, },
	{ .compatible = "ingenic,jz4770-tcu", .data = &jz4740_soc_info, },
	{ .compatible = "ingenic,x1000-tcu", .data = &jz4740_soc_info, },
	{ /* sentinel */ }
};

static int __init ingenic_tcu_init(struct device_node *np)
{
	const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np);
	const struct ingenic_soc_info *soc_info = id->data;
	struct ingenic_tcu *tcu;
	struct regmap *map;
	long rate;
	int ret;

	of_node_clear_flag(np, OF_POPULATED);

	map = device_node_to_regmap(np);
	if (IS_ERR(map))
		return PTR_ERR(map);

	tcu = kzalloc(sizeof(*tcu), GFP_KERNEL);
	if (!tcu)
		return -ENOMEM;

	/* Enable all TCU channels for PWM use by default except channels 0/1 */
	tcu->pwm_channels_mask = GENMASK(soc_info->num_channels - 1, 2);
	of_property_read_u32(np, "ingenic,pwm-channels-mask",
			     (u32 *)&tcu->pwm_channels_mask);

	/* Verify that we have at least two free channels */
	if (hweight8(tcu->pwm_channels_mask) > soc_info->num_channels - 2) {
		pr_crit("%s: Invalid PWM channel mask: 0x%02lx\n", __func__,
			tcu->pwm_channels_mask);
		ret = -EINVAL;
		goto err_free_ingenic_tcu;
	}

	tcu->map = map;
	ingenic_tcu = tcu;

	tcu->timer_channel = find_first_zero_bit(&tcu->pwm_channels_mask,
						 soc_info->num_channels);
	tcu->cs_channel = find_next_zero_bit(&tcu->pwm_channels_mask,
					     soc_info->num_channels,
					     tcu->timer_channel + 1);

	ret = ingenic_tcu_clocksource_init(np, tcu);
	if (ret) {
		pr_crit("%s: Unable to init clocksource: %d\n", __func__, ret);
		goto err_free_ingenic_tcu;
	}

	ret = ingenic_tcu_timer_init(np, tcu);
	if (ret)
		goto err_tcu_clocksource_cleanup;

	/* Register the sched_clock at the end as there's no way to undo it */
	rate = clk_get_rate(tcu->cs_clk);
	sched_clock_register(ingenic_tcu_timer_read, 16, rate);

	return 0;

err_tcu_clocksource_cleanup:
	clocksource_unregister(&tcu->cs);
	clk_disable_unprepare(tcu->cs_clk);
	clk_put(tcu->cs_clk);
err_free_ingenic_tcu:
	kfree(tcu);
	return ret;
}

TIMER_OF_DECLARE(jz4740_tcu_intc,  "ingenic,jz4740-tcu",  ingenic_tcu_init);
TIMER_OF_DECLARE(jz4725b_tcu_intc, "ingenic,jz4725b-tcu", ingenic_tcu_init);
TIMER_OF_DECLARE(jz4770_tcu_intc,  "ingenic,jz4770-tcu",  ingenic_tcu_init);
TIMER_OF_DECLARE(x1000_tcu_intc,  "ingenic,x1000-tcu",  ingenic_tcu_init);

static int __init ingenic_tcu_probe(struct platform_device *pdev)
{
	platform_set_drvdata(pdev, ingenic_tcu);

	return 0;
}

static int __maybe_unused ingenic_tcu_suspend(struct device *dev)
{
	struct ingenic_tcu *tcu = dev_get_drvdata(dev);

	clk_disable(tcu->cs_clk);
	clk_disable(tcu->timer_clk);
	return 0;
}

static int __maybe_unused ingenic_tcu_resume(struct device *dev)
{
	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
	int ret;

	ret = clk_enable(tcu->timer_clk);
	if (ret)
		return ret;

	ret = clk_enable(tcu->cs_clk);
	if (ret) {
		clk_disable(tcu->timer_clk);
		return ret;
	}

	return 0;
}

static const struct dev_pm_ops __maybe_unused ingenic_tcu_pm_ops = {
	/* _noirq: We want the TCU clocks to be gated last / ungated first */
	.suspend_noirq = ingenic_tcu_suspend,
	.resume_noirq  = ingenic_tcu_resume,
};

static struct platform_driver ingenic_tcu_driver = {
	.driver = {
		.name	= "ingenic-tcu-timer",
#ifdef CONFIG_PM_SLEEP
		.pm	= &ingenic_tcu_pm_ops,
#endif
		.of_match_table = ingenic_tcu_of_match,
	},
};
builtin_platform_driver_probe(ingenic_tcu_driver, ingenic_tcu_probe);
Commit	Line	Data
34e93683 PC	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* JZ47xx SoCs TCU IRQ driver
	4	* Copyright (C) 2019 Paul Cercueil <paul@crapouillou.net>
	5	*/
	6
	7	#include <linux/bitops.h>
	8	#include <linux/clk.h>
	9	#include <linux/clockchips.h>
	10	#include <linux/clocksource.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/mfd/ingenic-tcu.h>
	13	#include <linux/mfd/syscon.h>
	14	#include <linux/of.h>
	15	#include <linux/of_address.h>
	16	#include <linux/of_irq.h>
	17	#include <linux/of_platform.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/regmap.h>
	20	#include <linux/sched_clock.h>
	21
	22	#include <dt-bindings/clock/ingenic,tcu.h>
	23
	24	struct ingenic_soc_info {
	25	unsigned int num_channels;
	26	};
	27
	28	struct ingenic_tcu {
	29	struct regmap *map;
	30	struct clk timer_clk, cs_clk;
	31	unsigned int timer_channel, cs_channel;
	32	struct clock_event_device cevt;
	33	struct clocksource cs;
	34	char name[4];
	35	unsigned long pwm_channels_mask;
	36	};
	37
	38	static struct ingenic_tcu *ingenic_tcu;
	39
	40	static u64 notrace ingenic_tcu_timer_read(void)
	41	{
	42	struct ingenic_tcu *tcu = ingenic_tcu;
	43	unsigned int count;
	44
	45	regmap_read(tcu->map, TCU_REG_TCNTc(tcu->cs_channel), &count);
	46
	47	return count;
	48	}
	49
	50	static u64 notrace ingenic_tcu_timer_cs_read(struct clocksource *cs)
	51	{
	52	return ingenic_tcu_timer_read();
	53	}
	54
	55	static inline struct ingenic_tcu to_ingenic_tcu(struct clock_event_device evt)
	56	{
	57	return container_of(evt, struct ingenic_tcu, cevt);
	58	}
	59
	60	static int ingenic_tcu_cevt_set_state_shutdown(struct clock_event_device *evt)
	61	{
	62	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
	63
	64	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));
65
66	return 0;
67	}
68
69	static int ingenic_tcu_cevt_set_next(unsigned long next,
70	struct clock_event_device *evt)
71	{
72	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
73
74	if (next > 0xffff)
75	return -EINVAL;
76
77	regmap_write(tcu->map, TCU_REG_TDFRc(tcu->timer_channel), next);
78	regmap_write(tcu->map, TCU_REG_TCNTc(tcu->timer_channel), 0);
79	regmap_write(tcu->map, TCU_REG_TESR, BIT(tcu->timer_channel));
80
81	return 0;
82	}
83
84	static irqreturn_t ingenic_tcu_cevt_cb(int irq, void *dev_id)
85	{
86	struct clock_event_device *evt = dev_id;
87	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
88
89	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));
90
91	if (evt->event_handler)
92	evt->event_handler(evt);
93
94	return IRQ_HANDLED;
95	}
96
97	static struct clk * __init ingenic_tcu_get_clock(struct device_node *np, int id)
98	{
99	struct of_phandle_args args;
100
101	args.np = np;
102	args.args_count = 1;
103	args.args[0] = id;
104
105	return of_clk_get_from_provider(&args);
106	}
107
108	static int __init ingenic_tcu_timer_init(struct device_node *np,
109	struct ingenic_tcu *tcu)
110	{
111	unsigned int timer_virq, channel = tcu->timer_channel;
112	struct irq_domain *domain;
113	unsigned long rate;
114	int err;
115
116	tcu->timer_clk = ingenic_tcu_get_clock(np, channel);
117	if (IS_ERR(tcu->timer_clk))
118	return PTR_ERR(tcu->timer_clk);
119
120	err = clk_prepare_enable(tcu->timer_clk);
121	if (err)
122	goto err_clk_put;
123
124	rate = clk_get_rate(tcu->timer_clk);
125	if (!rate) {
126	err = -EINVAL;
127	goto err_clk_disable;
128	}
129
130	domain = irq_find_host(np);
131	if (!domain) {
132	err = -ENODEV;
133	goto err_clk_disable;
134	}
135
136	timer_virq = irq_create_mapping(domain, channel);
137	if (!timer_virq) {
138	err = -EINVAL;
139	goto err_clk_disable;
140	}
141
142	snprintf(tcu->name, sizeof(tcu->name), "TCU");
143
144	err = request_irq(timer_virq, ingenic_tcu_cevt_cb, IRQF_TIMER,
145	tcu->name, &tcu->cevt);
146	if (err)
147	goto err_irq_dispose_mapping;
148
149	tcu->cevt.cpumask = cpumask_of(smp_processor_id());
150	tcu->cevt.features = CLOCK_EVT_FEAT_ONESHOT;
151	tcu->cevt.name = tcu->name;
152	tcu->cevt.rating = 200;
153	tcu->cevt.set_state_shutdown = ingenic_tcu_cevt_set_state_shutdown;
154	tcu->cevt.set_next_event = ingenic_tcu_cevt_set_next;
155
156	clockevents_config_and_register(&tcu->cevt, rate, 10, 0xffff);
157
158	return 0;
159
160	err_irq_dispose_mapping:
161	irq_dispose_mapping(timer_virq);
162	err_clk_disable:
163	clk_disable_unprepare(tcu->timer_clk);
164	err_clk_put:
165	clk_put(tcu->timer_clk);
166	return err;
167	}
168
169	static int __init ingenic_tcu_clocksource_init(struct device_node *np,
170	struct ingenic_tcu *tcu)
171	{
172	unsigned int channel = tcu->cs_channel;
173	struct clocksource *cs = &tcu->cs;
174	unsigned long rate;
175	int err;
176
177	tcu->cs_clk = ingenic_tcu_get_clock(np, channel);
178	if (IS_ERR(tcu->cs_clk))
179	return PTR_ERR(tcu->cs_clk);
180
181	err = clk_prepare_enable(tcu->cs_clk);
182	if (err)
183	goto err_clk_put;
184
185	rate = clk_get_rate(tcu->cs_clk);
186	if (!rate) {
187	err = -EINVAL;
188	goto err_clk_disable;
189	}
190
191	/* Reset channel */
192	regmap_update_bits(tcu->map, TCU_REG_TCSRc(channel),
193	0xffff & ~TCU_TCSR_RESERVED_BITS, 0);
194
195	/* Reset counter */
196	regmap_write(tcu->map, TCU_REG_TDFRc(channel), 0xffff);
197	regmap_write(tcu->map, TCU_REG_TCNTc(channel), 0);
198
199	/* Enable channel */
200	regmap_write(tcu->map, TCU_REG_TESR, BIT(channel));
201
202	cs->name = "ingenic-timer";
203	cs->rating = 200;
204	cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
205	cs->mask = CLOCKSOURCE_MASK(16);
206	cs->read = ingenic_tcu_timer_cs_read;
207
208	err = clocksource_register_hz(cs, rate);
209	if (err)
210	goto err_clk_disable;
211
212	return 0;
213
214	err_clk_disable:
215	clk_disable_unprepare(tcu->cs_clk);
216	err_clk_put:
217	clk_put(tcu->cs_clk);
218	return err;
219	}
220
221	static const struct ingenic_soc_info jz4740_soc_info = {
222	.num_channels = 8,
223	};
224
225	static const struct ingenic_soc_info jz4725b_soc_info = {
226	.num_channels = 6,
227	};
228
229	static const struct of_device_id ingenic_tcu_of_match[] = {
230	{ .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, },
231	{ .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, },
232	{ .compatible = "ingenic,jz4770-tcu", .data = &jz4740_soc_info, },
a7cd3955	233	{ .compatible = "ingenic,x1000-tcu", .data = &jz4740_soc_info, },
34e93683 PC	234	{ /* sentinel */ }
	235	};
	236
	237	static int __init ingenic_tcu_init(struct device_node *np)
	238	{
	239	const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np);
	240	const struct ingenic_soc_info *soc_info = id->data;
	241	struct ingenic_tcu *tcu;
	242	struct regmap *map;
	243	long rate;
	244	int ret;
	245
	246	of_node_clear_flag(np, OF_POPULATED);
	247
	248	map = device_node_to_regmap(np);
	249	if (IS_ERR(map))
	250	return PTR_ERR(map);
	251
	252	tcu = kzalloc(sizeof(*tcu), GFP_KERNEL);
	253	if (!tcu)
	254	return -ENOMEM;
	255
	256	/* Enable all TCU channels for PWM use by default except channels 0/1 */
	257	tcu->pwm_channels_mask = GENMASK(soc_info->num_channels - 1, 2);
	258	of_property_read_u32(np, "ingenic,pwm-channels-mask",
	259	(u32 *)&tcu->pwm_channels_mask);
	260
	261	/* Verify that we have at least two free channels */
	262	if (hweight8(tcu->pwm_channels_mask) > soc_info->num_channels - 2) {
	263	pr_crit("%s: Invalid PWM channel mask: 0x%02lx\n", __func__,
	264	tcu->pwm_channels_mask);
	265	ret = -EINVAL;
	266	goto err_free_ingenic_tcu;
	267	}
	268
	269	tcu->map = map;
	270	ingenic_tcu = tcu;
	271
	272	tcu->timer_channel = find_first_zero_bit(&tcu->pwm_channels_mask,
	273	soc_info->num_channels);
	274	tcu->cs_channel = find_next_zero_bit(&tcu->pwm_channels_mask,
	275	soc_info->num_channels,
	276	tcu->timer_channel + 1);
	277
	278	ret = ingenic_tcu_clocksource_init(np, tcu);
	279	if (ret) {
	280	pr_crit("%s: Unable to init clocksource: %d\n", __func__, ret);
	281	goto err_free_ingenic_tcu;
	282	}
	283
	284	ret = ingenic_tcu_timer_init(np, tcu);
	285	if (ret)
	286	goto err_tcu_clocksource_cleanup;
	287
	288	/* Register the sched_clock at the end as there's no way to undo it */
	289	rate = clk_get_rate(tcu->cs_clk);
	290	sched_clock_register(ingenic_tcu_timer_read, 16, rate);
	291
	292	return 0;
	293
	294	err_tcu_clocksource_cleanup:
	295	clocksource_unregister(&tcu->cs);
	296	clk_disable_unprepare(tcu->cs_clk);
	297	clk_put(tcu->cs_clk);
298	err_free_ingenic_tcu:
299	kfree(tcu);
300	return ret;
301	}
302
303	TIMER_OF_DECLARE(jz4740_tcu_intc, "ingenic,jz4740-tcu", ingenic_tcu_init);
304	TIMER_OF_DECLARE(jz4725b_tcu_intc, "ingenic,jz4725b-tcu", ingenic_tcu_init);
305	TIMER_OF_DECLARE(jz4770_tcu_intc, "ingenic,jz4770-tcu", ingenic_tcu_init);
a7cd3955	306	TIMER_OF_DECLARE(x1000_tcu_intc, "ingenic,x1000-tcu", ingenic_tcu_init);
34e93683 PC	307
	308	static int __init ingenic_tcu_probe(struct platform_device *pdev)
	309	{
	310	platform_set_drvdata(pdev, ingenic_tcu);
	311
	312	return 0;
	313	}
	314
	315	static int __maybe_unused ingenic_tcu_suspend(struct device *dev)
	316	{
	317	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
	318
	319	clk_disable(tcu->cs_clk);
	320	clk_disable(tcu->timer_clk);
	321	return 0;
	322	}
	323
	324	static int __maybe_unused ingenic_tcu_resume(struct device *dev)
	325	{
	326	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
	327	int ret;
	328
	329	ret = clk_enable(tcu->timer_clk);
	330	if (ret)
	331	return ret;
	332
	333	ret = clk_enable(tcu->cs_clk);
	334	if (ret) {
	335	clk_disable(tcu->timer_clk);
	336	return ret;
	337	}
	338
	339	return 0;
	340	}
	341
	342	static const struct dev_pm_ops __maybe_unused ingenic_tcu_pm_ops = {
	343	/* _noirq: We want the TCU clocks to be gated last / ungated first */
	344	.suspend_noirq = ingenic_tcu_suspend,
	345	.resume_noirq = ingenic_tcu_resume,
	346	};
	347
	348	static struct platform_driver ingenic_tcu_driver = {
	349	.driver = {
	350	.name = "ingenic-tcu-timer",
	351	#ifdef CONFIG_PM_SLEEP
	352	.pm = &ingenic_tcu_pm_ops,
	353	#endif
	354	.of_match_table = ingenic_tcu_of_match,
	355	},
	356	};
	357	builtin_platform_driver_probe(ingenic_tcu_driver, ingenic_tcu_probe);