28 static int regcache_hw_init(struct regmap *map)  in regcache_hw_init()  argument
36 	if (!map->num_reg_defaults_raw)  in regcache_hw_init()
40 	for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++)  in regcache_hw_init()
41 		if (!regmap_volatile(map, i * map->reg_stride))  in regcache_hw_init()
46 		map->cache_bypass = true;  in regcache_hw_init()
50 	map->num_reg_defaults = count;  in regcache_hw_init()
51 	map->reg_defaults = kmalloc_array(count, sizeof(struct reg_default),  in regcache_hw_init()
53 	if (!map->reg_defaults)  in regcache_hw_init()
56 	if (!map->reg_defaults_raw) {  in regcache_hw_init()
57 		bool cache_bypass = map->cache_bypass;  in regcache_hw_init()
58 		dev_warn(map->dev, "No cache defaults, reading back from HW\n");  in regcache_hw_init()
61 		map->cache_bypass = true;  in regcache_hw_init()
62 		tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);  in regcache_hw_init()
67 		ret = regmap_raw_read(map, 0, tmp_buf,  in regcache_hw_init()
68 				      map->num_reg_defaults_raw);  in regcache_hw_init()
69 		map->cache_bypass = cache_bypass;  in regcache_hw_init()
73 		map->reg_defaults_raw = tmp_buf;  in regcache_hw_init()
74 		map->cache_free = 1;  in regcache_hw_init()
78 	for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {  in regcache_hw_init()
79 		if (regmap_volatile(map, i * map->reg_stride))  in regcache_hw_init()
81 		val = regcache_get_val(map, map->reg_defaults_raw, i);  in regcache_hw_init()
82 		map->reg_defaults[j].reg = i * map->reg_stride;  in regcache_hw_init()
83 		map->reg_defaults[j].def = val;  in regcache_hw_init()
92 	kfree(map->reg_defaults);  in regcache_hw_init()
97 int regcache_init(struct regmap *map, const struct regmap_config *config)  in regcache_init()  argument
104 		if (config->reg_defaults[i].reg % map->reg_stride)  in regcache_init()
107 	if (map->cache_type == REGCACHE_NONE) {  in regcache_init()
108 		map->cache_bypass = true;  in regcache_init()
113 		if (cache_types[i]->type == map->cache_type)  in regcache_init()
117 		dev_err(map->dev, "Could not match compress type: %d\n",  in regcache_init()
118 			map->cache_type);  in regcache_init()
122 	map->num_reg_defaults = config->num_reg_defaults;  in regcache_init()
123 	map->num_reg_defaults_raw = config->num_reg_defaults_raw;  in regcache_init()
124 	map->reg_defaults_raw = config->reg_defaults_raw;  in regcache_init()
125 	map->cache_word_size = DIV_ROUND_UP(config->val_bits, 8);  in regcache_init()
126 	map->cache_size_raw = map->cache_word_size * config->num_reg_defaults_raw;  in regcache_init()
128 	map->cache = NULL;  in regcache_init()
129 	map->cache_ops = cache_types[i];  in regcache_init()
131 	if (!map->cache_ops->read ||  in regcache_init()
132 	    !map->cache_ops->write ||  in regcache_init()
133 	    !map->cache_ops->name)  in regcache_init()
141 		if (!map->num_reg_defaults)  in regcache_init()
143 		tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults *  in regcache_init()
147 		map->reg_defaults = tmp_buf;  in regcache_init()
148 	} else if (map->num_reg_defaults_raw) {  in regcache_init()
153 		ret = regcache_hw_init(map);  in regcache_init()
156 		if (map->cache_bypass)  in regcache_init()
160 	if (!map->max_register)  in regcache_init()
161 		map->max_register = map->num_reg_defaults_raw;  in regcache_init()
163 	if (map->cache_ops->init) {  in regcache_init()
164 		dev_dbg(map->dev, "Initializing %s cache\n",  in regcache_init()
165 			map->cache_ops->name);  in regcache_init()
166 		ret = map->cache_ops->init(map);  in regcache_init()
173 	kfree(map->reg_defaults);  in regcache_init()
174 	if (map->cache_free)  in regcache_init()
175 		kfree(map->reg_defaults_raw);  in regcache_init()
180 void regcache_exit(struct regmap *map)  in regcache_exit()  argument
182 	if (map->cache_type == REGCACHE_NONE)  in regcache_exit()
185 	BUG_ON(!map->cache_ops);  in regcache_exit()
187 	kfree(map->reg_defaults);  in regcache_exit()
188 	if (map->cache_free)  in regcache_exit()
189 		kfree(map->reg_defaults_raw);  in regcache_exit()
191 	if (map->cache_ops->exit) {  in regcache_exit()
192 		dev_dbg(map->dev, "Destroying %s cache\n",  in regcache_exit()
193 			map->cache_ops->name);  in regcache_exit()
194 		map->cache_ops->exit(map);  in regcache_exit()
207 int regcache_read(struct regmap *map,  in regcache_read()  argument
212 	if (map->cache_type == REGCACHE_NONE)  in regcache_read()
215 	BUG_ON(!map->cache_ops);  in regcache_read()
217 	if (!regmap_volatile(map, reg)) {  in regcache_read()
218 		ret = map->cache_ops->read(map, reg, value);  in regcache_read()
221 			trace_regmap_reg_read_cache(map, reg, *value);  in regcache_read()
238 int regcache_write(struct regmap *map,  in regcache_write()  argument
241 	if (map->cache_type == REGCACHE_NONE)  in regcache_write()
244 	BUG_ON(!map->cache_ops);  in regcache_write()
246 	if (!regmap_volatile(map, reg))  in regcache_write()
247 		return map->cache_ops->write(map, reg, value);  in regcache_write()
252 static bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg,  in regcache_reg_needs_sync()  argument
258 	if (!map->no_sync_defaults)  in regcache_reg_needs_sync()
262 	ret = regcache_lookup_reg(map, reg);  in regcache_reg_needs_sync()
263 	if (ret >= 0 && val == map->reg_defaults[ret].def)  in regcache_reg_needs_sync()
268 static int regcache_default_sync(struct regmap *map, unsigned int min,  in regcache_default_sync()  argument
273 	for (reg = min; reg <= max; reg += map->reg_stride) {  in regcache_default_sync()
277 		if (regmap_volatile(map, reg) ||  in regcache_default_sync()
278 		    !regmap_writeable(map, reg))  in regcache_default_sync()
281 		ret = regcache_read(map, reg, &val);  in regcache_default_sync()
285 		if (!regcache_reg_needs_sync(map, reg, val))  in regcache_default_sync()
288 		map->cache_bypass = true;  in regcache_default_sync()
289 		ret = _regmap_write(map, reg, val);  in regcache_default_sync()
290 		map->cache_bypass = false;  in regcache_default_sync()
292 			dev_err(map->dev, "Unable to sync register %#x. %d\n",  in regcache_default_sync()
296 		dev_dbg(map->dev, "Synced register %#x, value %#x\n", reg, val);  in regcache_default_sync()
313 int regcache_sync(struct regmap *map)  in regcache_sync()  argument
320 	BUG_ON(!map->cache_ops);  in regcache_sync()
322 	map->lock(map->lock_arg);  in regcache_sync()
324 	bypass = map->cache_bypass;  in regcache_sync()
325 	dev_dbg(map->dev, "Syncing %s cache\n",  in regcache_sync()
326 		map->cache_ops->name);  in regcache_sync()
327 	name = map->cache_ops->name;  in regcache_sync()
328 	trace_regcache_sync(map, name, "start");  in regcache_sync()
330 	if (!map->cache_dirty)  in regcache_sync()
333 	map->async = true;  in regcache_sync()
336 	map->cache_bypass = true;  in regcache_sync()
337 	for (i = 0; i < map->patch_regs; i++) {  in regcache_sync()
338 		ret = _regmap_write(map, map->patch[i].reg, map->patch[i].def);  in regcache_sync()
340 			dev_err(map->dev, "Failed to write %x = %x: %d\n",  in regcache_sync()
341 				map->patch[i].reg, map->patch[i].def, ret);  in regcache_sync()
345 	map->cache_bypass = false;  in regcache_sync()
347 	if (map->cache_ops->sync)  in regcache_sync()
348 		ret = map->cache_ops->sync(map, 0, map->max_register);  in regcache_sync()
350 		ret = regcache_default_sync(map, 0, map->max_register);  in regcache_sync()
353 		map->cache_dirty = false;  in regcache_sync()
357 	map->async = false;  in regcache_sync()
358 	map->cache_bypass = bypass;  in regcache_sync()
359 	map->no_sync_defaults = false;  in regcache_sync()
360 	map->unlock(map->lock_arg);  in regcache_sync()
362 	regmap_async_complete(map);  in regcache_sync()
364 	trace_regcache_sync(map, name, "stop");  in regcache_sync()
382 int regcache_sync_region(struct regmap *map, unsigned int min,  in regcache_sync_region()  argument
389 	BUG_ON(!map->cache_ops);  in regcache_sync_region()
391 	map->lock(map->lock_arg);  in regcache_sync_region()
394 	bypass = map->cache_bypass;  in regcache_sync_region()
396 	name = map->cache_ops->name;  in regcache_sync_region()
397 	dev_dbg(map->dev, "Syncing %s cache from %d-%d\n", name, min, max);  in regcache_sync_region()
399 	trace_regcache_sync(map, name, "start region");  in regcache_sync_region()
401 	if (!map->cache_dirty)  in regcache_sync_region()
404 	map->async = true;  in regcache_sync_region()
406 	if (map->cache_ops->sync)  in regcache_sync_region()
407 		ret = map->cache_ops->sync(map, min, max);  in regcache_sync_region()
409 		ret = regcache_default_sync(map, min, max);  in regcache_sync_region()
413 	map->cache_bypass = bypass;  in regcache_sync_region()
414 	map->async = false;  in regcache_sync_region()
415 	map->no_sync_defaults = false;  in regcache_sync_region()
416 	map->unlock(map->lock_arg);  in regcache_sync_region()
418 	regmap_async_complete(map);  in regcache_sync_region()
420 	trace_regcache_sync(map, name, "stop region");  in regcache_sync_region()
437 int regcache_drop_region(struct regmap *map, unsigned int min,  in regcache_drop_region()  argument
442 	if (!map->cache_ops || !map->cache_ops->drop)  in regcache_drop_region()
445 	map->lock(map->lock_arg);  in regcache_drop_region()
447 	trace_regcache_drop_region(map, min, max);  in regcache_drop_region()
449 	ret = map->cache_ops->drop(map, min, max);  in regcache_drop_region()
451 	map->unlock(map->lock_arg);  in regcache_drop_region()
469 void regcache_cache_only(struct regmap *map, bool enable)  in regcache_cache_only()  argument
471 	map->lock(map->lock_arg);  in regcache_cache_only()
472 	WARN_ON(map->cache_bypass && enable);  in regcache_cache_only()
473 	map->cache_only = enable;  in regcache_cache_only()
474 	trace_regmap_cache_only(map, enable);  in regcache_cache_only()
475 	map->unlock(map->lock_arg);  in regcache_cache_only()
492 void regcache_mark_dirty(struct regmap *map)  in regcache_mark_dirty()  argument
494 	map->lock(map->lock_arg);  in regcache_mark_dirty()
495 	map->cache_dirty = true;  in regcache_mark_dirty()
496 	map->no_sync_defaults = true;  in regcache_mark_dirty()
497 	map->unlock(map->lock_arg);  in regcache_mark_dirty()
512 void regcache_cache_bypass(struct regmap *map, bool enable)  in regcache_cache_bypass()  argument
514 	map->lock(map->lock_arg);  in regcache_cache_bypass()
515 	WARN_ON(map->cache_only && enable);  in regcache_cache_bypass()
516 	map->cache_bypass = enable;  in regcache_cache_bypass()
517 	trace_regmap_cache_bypass(map, enable);  in regcache_cache_bypass()
518 	map->unlock(map->lock_arg);  in regcache_cache_bypass()
522 bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,  in regcache_set_val()  argument
525 	if (regcache_get_val(map, base, idx) == val)  in regcache_set_val()
529 	if (map->format.format_val) {  in regcache_set_val()
530 		map->format.format_val(base + (map->cache_word_size * idx),  in regcache_set_val()
535 	switch (map->cache_word_size) {  in regcache_set_val()
557 unsigned int regcache_get_val(struct regmap *map, const void *base,  in regcache_get_val()  argument
564 	if (map->format.parse_val)  in regcache_get_val()
565 		return map->format.parse_val(regcache_get_val_addr(map, base,  in regcache_get_val()
568 	switch (map->cache_word_size) {  in regcache_get_val()
596 int regcache_lookup_reg(struct regmap *map, unsigned int reg)  in regcache_lookup_reg()  argument
604 	r = bsearch(&key, map->reg_defaults, map->num_reg_defaults,  in regcache_lookup_reg()
608 		return r - map->reg_defaults;  in regcache_lookup_reg()
621 static int regcache_sync_block_single(struct regmap *map, void *block,  in regcache_sync_block_single()  argument
630 		regtmp = block_base + (i * map->reg_stride);  in regcache_sync_block_single()
633 		    !regmap_writeable(map, regtmp))  in regcache_sync_block_single()
636 		val = regcache_get_val(map, block, i);  in regcache_sync_block_single()
637 		if (!regcache_reg_needs_sync(map, regtmp, val))  in regcache_sync_block_single()
640 		map->cache_bypass = true;  in regcache_sync_block_single()
642 		ret = _regmap_write(map, regtmp, val);  in regcache_sync_block_single()
644 		map->cache_bypass = false;  in regcache_sync_block_single()
646 			dev_err(map->dev, "Unable to sync register %#x. %d\n",  in regcache_sync_block_single()
650 		dev_dbg(map->dev, "Synced register %#x, value %#x\n",  in regcache_sync_block_single()
657 static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,  in regcache_sync_block_raw_flush()  argument
660 	size_t val_bytes = map->format.val_bytes;  in regcache_sync_block_raw_flush()
666 	count = (cur - base) / map->reg_stride;  in regcache_sync_block_raw_flush()
668 	dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",  in regcache_sync_block_raw_flush()
669 		count * val_bytes, count, base, cur - map->reg_stride);  in regcache_sync_block_raw_flush()
671 	map->cache_bypass = true;  in regcache_sync_block_raw_flush()
673 	ret = _regmap_raw_write(map, base, *data, count * val_bytes);  in regcache_sync_block_raw_flush()
675 		dev_err(map->dev, "Unable to sync registers %#x-%#x. %d\n",  in regcache_sync_block_raw_flush()
676 			base, cur - map->reg_stride, ret);  in regcache_sync_block_raw_flush()
678 	map->cache_bypass = false;  in regcache_sync_block_raw_flush()
685 static int regcache_sync_block_raw(struct regmap *map, void *block,  in regcache_sync_block_raw()  argument
697 		regtmp = block_base + (i * map->reg_stride);  in regcache_sync_block_raw()
700 		    !regmap_writeable(map, regtmp)) {  in regcache_sync_block_raw()
701 			ret = regcache_sync_block_raw_flush(map, &data,  in regcache_sync_block_raw()
708 		val = regcache_get_val(map, block, i);  in regcache_sync_block_raw()
709 		if (!regcache_reg_needs_sync(map, regtmp, val)) {  in regcache_sync_block_raw()
710 			ret = regcache_sync_block_raw_flush(map, &data,  in regcache_sync_block_raw()
718 			data = regcache_get_val_addr(map, block, i);  in regcache_sync_block_raw()
723 	return regcache_sync_block_raw_flush(map, &data, base, regtmp +  in regcache_sync_block_raw()
724 			map->reg_stride);  in regcache_sync_block_raw()
727 int regcache_sync_block(struct regmap *map, void *block,  in regcache_sync_block()  argument
732 	if (regmap_can_raw_write(map) && !map->use_single_write)  in regcache_sync_block()
733 		return regcache_sync_block_raw(map, block, cache_present,  in regcache_sync_block()
736 		return regcache_sync_block_single(map, block, cache_present,  in regcache_sync_block()