misc/eeprom/idt_89hpesx.c

19  * User-space applications won't be able to write to the EEPROM sysfs-node.
20  *    Additionally IDT 89HPESx SMBus interface has an ability to write/read
30  * it can just write a proper value to the sysfs-file:
32  * If it wants to change the CSR value as well, the format of the write
64  * csr_dbgdir - CSR read/write operations Debugfs directory
74  * @inieecmd:	Initial cmd value for EEPROM read/write operations
75  * @inicsrcmd:	Initial cmd value for CSR read/write operations
80  * @smb_write:	SMBus write method
86  * @ee_file:	EEPROM read/write sysfs-file
152  * @CCODE_CSR:		CSR read/write transaction
153  * @CCODE_EEPROM:	EEPROM read/write transaction
170  * @EEPROM_OP_WRITE:	EEPROM write operation
176  * @EEPROM_WR_CNT:	Bytes count to perform write operation
177  * @EEPROM_WRRD_CNT:	Bytes count to write before reading
199  * @CSR_OP_WRITE:	CSR write operation
203  * @CSR_WR_CNT:		Bytes count to perform write operation
204  * @CSR_WRRD_CNT:	Bytes count to write before reading
253  * idt_smb_write_byte() - SMBus write method when I2C_SMBUS_BYTE_DATA operation
318  * idt_smb_write_word() - SMBus write method when I2C_SMBUS_BYTE_DATA and
418  * idt_smb_write_block() - SMBus write method when I2C_SMBUS_BLOCK_DATA
468  * idt_smb_write_i2c_block() - SMBus write method when I2C_SMBUS_I2C_BLOCK_DATA
473  * NOTE It's usual SMBus write block operation, except the actual data length is
610  * idt_eeprom_write() - EEPROM write operation
634 		/* Perform write operation */
643 				"Failed to write 0x%04hx:0x%02hhx to eeprom",
713  * idt_csr_write() - CSR write operation
733 	/* Perform write operation */
740 		dev_err(dev, "Failed to write 0x%04x: 0x%04x to csr",
841  * eeprom_write() - EEPROM sysfs-node write callback
845  * @buf:	Buffer to write data to
847  * @count:	Number of bytes to write
859 	/* Perform EEPROM write operation */
869  * @buf:	Buffer to write data to
871  * @count:	Number of bytes to write
889  * idt_dbgfs_csr_write() - CSR debugfs-node write callback
983  * @buf:	Buffer to write data to
1023  * csr_dbgfs_ops - CSR debugfs-node read/write operations
1028 	.write = idt_dbgfs_csr_write,
1210 	/* Check i2c adapter write functionality */
1214 		dev_dbg(dev, "SMBus block-write op chosen");
1218 		dev_dbg(dev, "SMBus i2c-block-write op chosen");
1224 		dev_warn(dev, "Use slow word/byte SMBus write op");
1228 		dev_warn(dev, "Use slow byte SMBus write op");
1229 	} else /* no supported smbus write operations */ {
1230 		dev_err(dev, "No supported SMBus write op");
1295 	/* In case of read-only EEPROM get rid of write ability */
1298 		pdev->ee_file->write = NULL;
1341 	/* Create Debugfs file for CSR read/write operations */