drm: add drm_print_bits

}

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.

 * The first name in the @bits array is for the bit indexed by @from.

 *

 * @p: the &drm_printer

 * @value: field value.

 * @bits: Array with bit names.

 * @from: start of bit range to print (inclusive).

 * @to: end of bit range to print (exclusive).

 */

void drm_print_bits(struct drm_printer *p,

		    unsigned long value, const char *bits[],

		    unsigned int from, unsigned int to)

{

	bool first = true;

	unsigned int i;

	for (i = from; i < to; i++) {

		if (!(value & (1 << i)))

			continue;

		if (WARN_ON_ONCE(!bits[i-from]))

			continue;

		drm_printf(p, "%s%s", first ? "" : ",",

			   bits[i-from]);

		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, ...)

{

void drm_printf(struct drm_printer *p, const char *f, ...);

void drm_puts(struct drm_printer *p, const char *str);

void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset);

void drm_print_bits(struct drm_printer *p,

		    unsigned long value, const char *bits[],

		    unsigned int from, unsigned int to);

__printf(2, 0)

/**