[linux-2.6-block.git] / drivers / gpu / drm / drm_print.c

/*
 * Copyright (C) 2016 Red Hat
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 * Rob Clark <robdclark@gmail.com>
 */

#define DEBUG /* for pr_debug() */

#include <stdarg.h>

#include <linux/io.h>
#include <linux/moduleparam.h>
#include <linux/seq_file.h>
#include <linux/slab.h>

#include <drm/drm.h>
#include <drm/drm_drv.h>
#include <drm/drm_print.h>

/*
 * __drm_debug: Enable debug output.
 * Bitmask of DRM_UT_x. See include/drm/drm_print.h for details.
 */
unsigned int __drm_debug;
EXPORT_SYMBOL(__drm_debug);

MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n"
"\t\tBit 0 (0x01)  will enable CORE messages (drm core code)\n"
"\t\tBit 1 (0x02)  will enable DRIVER messages (drm controller code)\n"
"\t\tBit 2 (0x04)  will enable KMS messages (modesetting code)\n"
"\t\tBit 3 (0x08)  will enable PRIME messages (prime code)\n"
"\t\tBit 4 (0x10)  will enable ATOMIC messages (atomic code)\n"
"\t\tBit 5 (0x20)  will enable VBL messages (vblank code)\n"
"\t\tBit 7 (0x80)  will enable LEASE messages (leasing code)\n"
"\t\tBit 8 (0x100) will enable DP messages (displayport code)");
module_param_named(debug, __drm_debug, int, 0600);

void __drm_puts_coredump(struct drm_printer *p, const char *str)
{
	struct drm_print_iterator *iterator = p->arg;
	ssize_t len;

	if (!iterator->remain)
		return;

	if (iterator->offset < iterator->start) {
		ssize_t copy;

		len = strlen(str);

		if (iterator->offset + len <= iterator->start) {
			iterator->offset += len;
			return;
		}

		copy = len - (iterator->start - iterator->offset);

		if (copy > iterator->remain)
			copy = iterator->remain;

		/* Copy out the bit of the string that we need */
		memcpy(iterator->data,
			str + (iterator->start - iterator->offset), copy);

		iterator->offset = iterator->start + copy;
		iterator->remain -= copy;
	} else {
		ssize_t pos = iterator->offset - iterator->start;

		len = min_t(ssize_t, strlen(str), iterator->remain);

		memcpy(iterator->data + pos, str, len);

		iterator->offset += len;
		iterator->remain -= len;
	}
}
EXPORT_SYMBOL(__drm_puts_coredump);

void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf)
{
	struct drm_print_iterator *iterator = p->arg;
	size_t len;
	char *buf;

	if (!iterator->remain)
		return;

	/* Figure out how big the string will be */
	len = snprintf(NULL, 0, "%pV", vaf);

	/* This is the easiest path, we've already advanced beyond the offset */
	if (iterator->offset + len <= iterator->start) {
		iterator->offset += len;
		return;
	}

	/* Then check if we can directly copy into the target buffer */
	if ((iterator->offset >= iterator->start) && (len < iterator->remain)) {
		ssize_t pos = iterator->offset - iterator->start;

		snprintf(((char *) iterator->data) + pos,
			iterator->remain, "%pV", vaf);

		iterator->offset += len;
		iterator->remain -= len;

		return;
	}

	/*
	 * Finally, hit the slow path and make a temporary string to copy over
	 * using _drm_puts_coredump
	 */
	buf = kmalloc(len + 1, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY);
	if (!buf)
		return;

	snprintf(buf, len + 1, "%pV", vaf);
	__drm_puts_coredump(p, (const char *) buf);

	kfree(buf);
}
EXPORT_SYMBOL(__drm_printfn_coredump);

void __drm_puts_seq_file(struct drm_printer *p, const char *str)
{
	seq_puts(p->arg, str);
}
EXPORT_SYMBOL(__drm_puts_seq_file);

void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
{
	seq_printf(p->arg, "%pV", vaf);
}
EXPORT_SYMBOL(__drm_printfn_seq_file);

void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
{
	dev_info(p->arg, "[" DRM_NAME "] %pV", vaf);
}
EXPORT_SYMBOL(__drm_printfn_info);

void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf)
{
	pr_debug("%s %pV", p->prefix, vaf);
}
EXPORT_SYMBOL(__drm_printfn_debug);

void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf)
{
	pr_err("*ERROR* %s %pV", p->prefix, vaf);
}
EXPORT_SYMBOL(__drm_printfn_err);

/**
 * drm_puts - print a const string to a &drm_printer stream
 * @p: the &drm printer
 * @str: const string
 *
 * Allow &drm_printer types that have a constant string
 * option to use it.
 */
void drm_puts(struct drm_printer *p, const char *str)
{
	if (p->puts)
		p->puts(p, str);
	else
		drm_printf(p, "%s", str);
}
EXPORT_SYMBOL(drm_puts);

/**
 * drm_printf - print to a &drm_printer stream
 * @p: the &drm_printer
 * @f: format string
 */
void drm_printf(struct drm_printer *p, const char *f, ...)
{
	va_list args;

	va_start(args, f);
	drm_vprintf(p, f, &args);
	va_end(args);
}
EXPORT_SYMBOL(drm_printf);

/**
 * drm_print_bits - print bits to a &drm_printer stream
 *
 * Print bits (in flag fields for example) in human readable form.
 *
 * @p: the &drm_printer
 * @value: field value.
 * @bits: Array with bit names.
 * @nbits: Size of bit names array.
 */
void drm_print_bits(struct drm_printer *p, unsigned long value,
		    const char * const bits[], unsigned int nbits)
{
	bool first = true;
	unsigned int i;

	if (WARN_ON_ONCE(nbits > BITS_PER_TYPE(value)))
		nbits = BITS_PER_TYPE(value);

	for_each_set_bit(i, &value, nbits) {
		if (WARN_ON_ONCE(!bits[i]))
			continue;
		drm_printf(p, "%s%s", first ? "" : ",",
			   bits[i]);
		first = false;
	}
	if (first)
		drm_printf(p, "(none)");
}
EXPORT_SYMBOL(drm_print_bits);

void drm_dev_printk(const struct device *dev, const char *level,
		    const char *format, ...)
{
	struct va_format vaf;
	va_list args;

	va_start(args, format);
	vaf.fmt = format;
	vaf.va = &args;

	if (dev)
		dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
			   __builtin_return_address(0), &vaf);
	else
		printk("%s" "[" DRM_NAME ":%ps] %pV",
		       level, __builtin_return_address(0), &vaf);

	va_end(args);
}
EXPORT_SYMBOL(drm_dev_printk);

void drm_dev_dbg(const struct device *dev, enum drm_debug_category category,
		 const char *format, ...)
{
	struct va_format vaf;
	va_list args;

	if (!drm_debug_enabled(category))
		return;

	va_start(args, format);
	vaf.fmt = format;
	vaf.va = &args;

	if (dev)
		dev_printk(KERN_DEBUG, dev, "[" DRM_NAME ":%ps] %pV",
			   __builtin_return_address(0), &vaf);
	else
		printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
		       __builtin_return_address(0), &vaf);

	va_end(args);
}
EXPORT_SYMBOL(drm_dev_dbg);

void __drm_dbg(enum drm_debug_category category, const char *format, ...)
{
	struct va_format vaf;
	va_list args;

	if (!drm_debug_enabled(category))
		return;

	va_start(args, format);
	vaf.fmt = format;
	vaf.va = &args;

	printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
	       __builtin_return_address(0), &vaf);

	va_end(args);
}
EXPORT_SYMBOL(__drm_dbg);

void __drm_err(const char *format, ...)
{
	struct va_format vaf;
	va_list args;

	va_start(args, format);
	vaf.fmt = format;
	vaf.va = &args;

	printk(KERN_ERR "[" DRM_NAME ":%ps] *ERROR* %pV",
	       __builtin_return_address(0), &vaf);

	va_end(args);
}
EXPORT_SYMBOL(__drm_err);

/**
 * drm_print_regset32 - print the contents of registers to a
 * &drm_printer stream.
 *
 * @p: the &drm printer
 * @regset: the list of registers to print.
 *
 * Often in driver debug, it's useful to be able to either capture the
 * contents of registers in the steady state using debugfs or at
 * specific points during operation.  This lets the driver have a
 * single list of registers for both.
 */
void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset)
{
	int namelen = 0;
	int i;

	for (i = 0; i < regset->nregs; i++)
		namelen = max(namelen, (int)strlen(regset->regs[i].name));

	for (i = 0; i < regset->nregs; i++) {
		drm_printf(p, "%*s = 0x%08x\n",
			   namelen, regset->regs[i].name,
			   readl(regset->base + regset->regs[i].offset));
	}
}
EXPORT_SYMBOL(drm_print_regset32);
Commit	Line	Data
d8187177 RC	1	/*
	2	* Copyright (C) 2016 Red Hat
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors:
	23	* Rob Clark <robdclark@gmail.com>
	24	*/
	25
79a5ad2f CW	26	#define DEBUG /* for pr_debug() */
79a5ad2f CW	27
d8187177	28	#include <stdarg.h>
0500c04e SR	29
0500c04e SR	30	#include <linux/io.h>
959b077f	31	#include <linux/moduleparam.h>
d8187177	32	#include <linux/seq_file.h>
0500c04e SR	33	#include <linux/slab.h>
	34
	35	#include <drm/drm.h>
	36	#include <drm/drm_drv.h>
d8187177 RC	37	#include <drm/drm_print.h>
d8187177 RC	38
959b077f	39	/*
9f0ac028	40	* __drm_debug: Enable debug output.
959b077f JN	41	* Bitmask of DRM_UT_x. See include/drm/drm_print.h for details.
959b077f JN	42	*/
9f0ac028 JN	43	unsigned int __drm_debug;
9f0ac028 JN	44	EXPORT_SYMBOL(__drm_debug);
959b077f JN	45
	46	MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n"
	47	"\t\tBit 0 (0x01) will enable CORE messages (drm core code)\n"
	48	"\t\tBit 1 (0x02) will enable DRIVER messages (drm controller code)\n"
	49	"\t\tBit 2 (0x04) will enable KMS messages (modesetting code)\n"
	50	"\t\tBit 3 (0x08) will enable PRIME messages (prime code)\n"
	51	"\t\tBit 4 (0x10) will enable ATOMIC messages (atomic code)\n"
	52	"\t\tBit 5 (0x20) will enable VBL messages (vblank code)\n"
	53	"\t\tBit 7 (0x80) will enable LEASE messages (leasing code)\n"
	54	"\t\tBit 8 (0x100) will enable DP messages (displayport code)");
9f0ac028	55	module_param_named(debug, __drm_debug, int, 0600);
959b077f	56
5dc634bd	57	void __drm_puts_coredump(struct drm_printer p, const char str)
cfc57a18 JC	58	{
	59	struct drm_print_iterator *iterator = p->arg;
	60	ssize_t len;
	61
	62	if (!iterator->remain)
	63	return;
	64
cfc57a18	65	if (iterator->offset < iterator->start) {
cfc57a18 JC	66	ssize_t copy;
cfc57a18 JC	67
5dc634bd JC	68	len = strlen(str);
5dc634bd JC	69
cfc57a18 JC	70	if (iterator->offset + len <= iterator->start) {
	71	iterator->offset += len;
	72	return;
	73	}
	74
cfc57a18 JC	75	copy = len - (iterator->start - iterator->offset);
	76
	77	if (copy > iterator->remain)
	78	copy = iterator->remain;
	79
	80	/* Copy out the bit of the string that we need */
	81	memcpy(iterator->data,
5dc634bd	82	str + (iterator->start - iterator->offset), copy);
cfc57a18 JC	83
	84	iterator->offset = iterator->start + copy;
	85	iterator->remain -= copy;
cfc57a18	86	} else {
cfc57a18 JC	87	ssize_t pos = iterator->offset - iterator->start;
cfc57a18 JC	88
5dc634bd	89	len = min_t(ssize_t, strlen(str), iterator->remain);
cfc57a18	90
5dc634bd	91	memcpy(iterator->data + pos, str, len);
cfc57a18	92
5dc634bd JC	93	iterator->offset += len;
	94	iterator->remain -= len;
	95	}
	96	}
	97	EXPORT_SYMBOL(__drm_puts_coredump);
cfc57a18	98
5dc634bd JC	99	void __drm_printfn_coredump(struct drm_printer p, struct va_format vaf)
	100	{
	101	struct drm_print_iterator *iterator = p->arg;
	102	size_t len;
	103	char *buf;
	104
	105	if (!iterator->remain)
	106	return;
	107
	108	/* Figure out how big the string will be */
	109	len = snprintf(NULL, 0, "%pV", vaf);
	110
	111	/* This is the easiest path, we've already advanced beyond the offset */
	112	if (iterator->offset + len <= iterator->start) {
	113	iterator->offset += len;
	114	return;
	115	}
cfc57a18	116
5dc634bd JC	117	/* Then check if we can directly copy into the target buffer */
	118	if ((iterator->offset >= iterator->start) && (len < iterator->remain)) {
	119	ssize_t pos = iterator->offset - iterator->start;
cfc57a18	120
5dc634bd JC	121	snprintf(((char *) iterator->data) + pos,
5dc634bd JC	122	iterator->remain, "%pV", vaf);
cfc57a18	123
5dc634bd JC	124	iterator->offset += len;
5dc634bd JC	125	iterator->remain -= len;
cfc57a18	126
5dc634bd	127	return;
cfc57a18	128	}
5dc634bd JC	129
	130	/*
	131	* Finally, hit the slow path and make a temporary string to copy over
	132	* using _drm_puts_coredump
	133	*/
	134	buf = kmalloc(len + 1, GFP_KERNEL \| __GFP_NOWARN \| __GFP_NORETRY);
	135	if (!buf)
	136	return;
	137
	138	snprintf(buf, len + 1, "%pV", vaf);
	139	__drm_puts_coredump(p, (const char *) buf);
	140
	141	kfree(buf);
cfc57a18 JC	142	}
	143	EXPORT_SYMBOL(__drm_printfn_coredump);
	144
4538d732 JC	145	void __drm_puts_seq_file(struct drm_printer p, const char str)
	146	{
	147	seq_puts(p->arg, str);
	148	}
	149	EXPORT_SYMBOL(__drm_puts_seq_file);
	150
d8187177 RC	151	void __drm_printfn_seq_file(struct drm_printer p, struct va_format vaf)
	152	{
	153	seq_printf(p->arg, "%pV", vaf);
	154	}
	155	EXPORT_SYMBOL(__drm_printfn_seq_file);
	156
	157	void __drm_printfn_info(struct drm_printer p, struct va_format vaf)
	158	{
3c6d6e0f	159	dev_info(p->arg, "[" DRM_NAME "] %pV", vaf);
d8187177 RC	160	}
	161	EXPORT_SYMBOL(__drm_printfn_info);
	162
3d387d92 DV	163	void __drm_printfn_debug(struct drm_printer p, struct va_format vaf)
	164	{
	165	pr_debug("%s %pV", p->prefix, vaf);
	166	}
	167	EXPORT_SYMBOL(__drm_printfn_debug);
	168
0de54fb2 LP	169	void __drm_printfn_err(struct drm_printer p, struct va_format vaf)
	170	{
	171	pr_err("ERROR %s %pV", p->prefix, vaf);
	172	}
	173	EXPORT_SYMBOL(__drm_printfn_err);
	174
63f4cc01 JC	175	/**
	176	* drm_puts - print a const string to a &drm_printer stream
	177	* @p: the &drm printer
	178	* @str: const string
	179	*
	180	* Allow &drm_printer types that have a constant string
	181	* option to use it.
	182	*/
	183	void drm_puts(struct drm_printer p, const char str)
	184	{
	185	if (p->puts)
	186	p->puts(p, str);
	187	else
	188	drm_printf(p, "%s", str);
	189	}
	190	EXPORT_SYMBOL(drm_puts);
	191
2d5e836d DV	192	/**
	193	* drm_printf - print to a &drm_printer stream
	194	* @p: the &drm_printer
	195	* @f: format string
	196	*/
d8187177 RC	197	void drm_printf(struct drm_printer p, const char f, ...)
d8187177 RC	198	{
d8187177 RC	199	va_list args;
	200
	201	va_start(args, f);
e2b155e9	202	drm_vprintf(p, f, &args);
d8187177 RC	203	va_end(args);
	204	}
	205	EXPORT_SYMBOL(drm_printf);
02c9656b	206
2dc5d44c GH	207	/**
	208	* drm_print_bits - print bits to a &drm_printer stream
	209	*
	210	* Print bits (in flag fields for example) in human readable form.
2dc5d44c GH	211	*
	212	* @p: the &drm_printer
	213	* @value: field value.
	214	* @bits: Array with bit names.
141f6357	215	* @nbits: Size of bit names array.
2dc5d44c	216	*/
141f6357 GH	217	void drm_print_bits(struct drm_printer *p, unsigned long value,
141f6357 GH	218	const char * const bits[], unsigned int nbits)
2dc5d44c GH	219	{
	220	bool first = true;
	221	unsigned int i;
	222
141f6357 GH	223	if (WARN_ON_ONCE(nbits > BITS_PER_TYPE(value)))
	224	nbits = BITS_PER_TYPE(value);
	225
	226	for_each_set_bit(i, &value, nbits) {
	227	if (WARN_ON_ONCE(!bits[i]))
2dc5d44c GH	228	continue;
2dc5d44c GH	229	drm_printf(p, "%s%s", first ? "" : ",",
141f6357	230	bits[i]);
2dc5d44c GH	231	first = false;
	232	}
	233	if (first)
	234	drm_printf(p, "(none)");
	235	}
	236	EXPORT_SYMBOL(drm_print_bits);
	237
02c9656b	238	void drm_dev_printk(const struct device dev, const char level,
db870864 JP	239	const char *format, ...)
	240	{
	241	struct va_format vaf;
	242	va_list args;
	243
	244	va_start(args, format);
	245	vaf.fmt = format;
	246	vaf.va = &args;
	247
	248	if (dev)
	249	dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
	250	__builtin_return_address(0), &vaf);
	251	else
	252	printk("%s" "[" DRM_NAME ":%ps] %pV",
	253	level, __builtin_return_address(0), &vaf);
	254
	255	va_end(args);
	256	}
	257	EXPORT_SYMBOL(drm_dev_printk);
	258
876905b8	259	void drm_dev_dbg(const struct device *dev, enum drm_debug_category category,
db870864	260	const char *format, ...)
02c9656b HM	261	{
	262	struct va_format vaf;
	263	va_list args;
	264
f0a8f533	265	if (!drm_debug_enabled(category))
02c9656b HM	266	return;
	267
	268	va_start(args, format);
	269	vaf.fmt = format;
	270	vaf.va = &args;
	271
	272	if (dev)
db870864 JP	273	dev_printk(KERN_DEBUG, dev, "[" DRM_NAME ":%ps] %pV",
db870864 JP	274	__builtin_return_address(0), &vaf);
02c9656b	275	else
db870864 JP	276	printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
db870864 JP	277	__builtin_return_address(0), &vaf);
02c9656b HM	278
	279	va_end(args);
	280	}
db870864	281	EXPORT_SYMBOL(drm_dev_dbg);
02c9656b	282
876905b8	283	void __drm_dbg(enum drm_debug_category category, const char *format, ...)
02c9656b HM	284	{
	285	struct va_format vaf;
	286	va_list args;
	287
f0a8f533	288	if (!drm_debug_enabled(category))
02c9656b HM	289	return;
	290
	291	va_start(args, format);
	292	vaf.fmt = format;
	293	vaf.va = &args;
	294
99a95487 JP	295	printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
	296	__builtin_return_address(0), &vaf);
	297
	298	va_end(args);
	299	}
99acf471	300	EXPORT_SYMBOL(__drm_dbg);
99a95487	301
99acf471	302	void __drm_err(const char *format, ...)
99a95487 JP	303	{
	304	struct va_format vaf;
	305	va_list args;
	306
	307	va_start(args, format);
	308	vaf.fmt = format;
	309	vaf.va = &args;
	310
	311	printk(KERN_ERR "[" DRM_NAME ":%ps] ERROR %pV",
	312	__builtin_return_address(0), &vaf);
02c9656b HM	313
	314	va_end(args);
	315	}
99acf471	316	EXPORT_SYMBOL(__drm_err);
5f513cc8 EA	317
	318	/**
	319	* drm_print_regset32 - print the contents of registers to a
	320	* &drm_printer stream.
	321	*
	322	* @p: the &drm printer
	323	* @regset: the list of registers to print.
	324	*
	325	* Often in driver debug, it's useful to be able to either capture the
	326	* contents of registers in the steady state using debugfs or at
	327	* specific points during operation. This lets the driver have a
	328	* single list of registers for both.
	329	*/
	330	void drm_print_regset32(struct drm_printer p, struct debugfs_regset32 regset)
	331	{
	332	int namelen = 0;
	333	int i;
	334
	335	for (i = 0; i < regset->nregs; i++)
	336	namelen = max(namelen, (int)strlen(regset->regs[i].name));
	337
	338	for (i = 0; i < regset->nregs; i++) {
	339	drm_printf(p, "%*s = 0x%08x\n",
	340	namelen, regset->regs[i].name,
	341	readl(regset->base + regset->regs[i].offset));
	342	}
	343	}
	344	EXPORT_SYMBOL(drm_print_regset32);