39 static bool flash_b91_is_range_valid(off_t offset, size_t len)  in flash_b91_is_range_valid()  argument
42 	if ((offset < 0) || (len < 1)) {  in flash_b91_is_range_valid()
47 	if ((offset + len) > FLASH_SIZE) {  in flash_b91_is_range_valid()
65 static int flash_b91_erase(const struct device *dev, off_t offset, size_t len)  in flash_b91_erase()  argument
76 	if (!flash_b91_is_range_valid(offset, len)) {  in flash_b91_erase()
81 	if (((offset % PAGE_SIZE) != 0) || ((len % PAGE_SIZE) != 0)) {  in flash_b91_erase()
92 		if ((page_nums >= BLOCK_64K_PAGES) && ((offset % BLOCK_64K_SIZE) == 0)) {  in flash_b91_erase()
94 			flash_erase_64kblock(offset);  in flash_b91_erase()
96 			offset += BLOCK_64K_SIZE;  in flash_b91_erase()
97 		} else if ((page_nums >= BLOCK_32K_PAGES) && ((offset % BLOCK_32K_SIZE) == 0)) {  in flash_b91_erase()
99 			flash_erase_32kblock(offset);  in flash_b91_erase()
101 			offset += BLOCK_32K_SIZE;  in flash_b91_erase()
102 		} else if ((page_nums >= SECTOR_PAGES) && ((offset % SECTOR_SIZE) == 0)) {  in flash_b91_erase()
104 			flash_erase_sector(offset);  in flash_b91_erase()
106 			offset += SECTOR_SIZE;  in flash_b91_erase()
109 			flash_erase_page(offset);  in flash_b91_erase()
111 			offset += PAGE_SIZE;  in flash_b91_erase()
122 static int flash_b91_write(const struct device *dev, off_t offset,  in flash_b91_write()  argument
134 	if (!flash_b91_is_range_valid(offset, len)) {  in flash_b91_write()
161 	flash_write_page(offset, len, (unsigned char *)data);  in flash_b91_write()
175 static int flash_b91_read(const struct device *dev, off_t offset,  in flash_b91_read()  argument
186 	if (!flash_b91_is_range_valid(offset, len)) {  in flash_b91_read()
191 	flash_read_page(offset, len, (unsigned char *)data);  in flash_b91_read()