Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2015 - 2016 Red Hat, Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (c) 2011, 2012 Synaptics Incorporated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2011 Unixphere
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/kconfig.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/lockdep.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/rmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "rmi_driver.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define SMB_PROTOCOL_VERSION_ADDRESS	0xfd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define SMB_MAX_COUNT			32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define RMI_SMB2_MAP_SIZE		8 /* 8 entry of 4 bytes each */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define RMI_SMB2_MAP_FLAGS_WE		0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) struct mapping_table_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	__le16 rmiaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	u8 readcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) struct rmi_smb_xport {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	struct rmi_transport_dev xport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct mutex page_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	int page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	u8 table_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct mutex mappingtable_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct mapping_table_entry mapping_table[RMI_SMB2_MAP_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static int rmi_smb_get_version(struct rmi_smb_xport *rmi_smb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct i2c_client *client = rmi_smb->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	/* Check if for SMBus new version device by reading version byte. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	retval = i2c_smbus_read_byte_data(client, SMB_PROTOCOL_VERSION_ADDRESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		dev_err(&client->dev, "failed to get SMBus version number!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	return retval + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) /* SMB block write - wrapper over ic2_smb_write_block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static int smb_block_write(struct rmi_transport_dev *xport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			      u8 commandcode, const void *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct i2c_client *client = rmi_smb->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	retval = i2c_smbus_write_block_data(client, commandcode, len, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	rmi_dbg(RMI_DEBUG_XPORT, &client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		"wrote %zd bytes at %#04x: %d (%*ph)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		len, commandcode, retval, (int)len, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76)  * The function to get command code for smbus operations and keeps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  * records to the driver mapping table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) static int rmi_smb_get_command_code(struct rmi_transport_dev *xport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		u16 rmiaddr, int bytecount, bool isread, u8 *commandcode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	struct mapping_table_entry new_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	mutex_lock(&rmi_smb->mappingtable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	for (i = 0; i < RMI_SMB2_MAP_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		struct mapping_table_entry *entry = &rmi_smb->mapping_table[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		if (le16_to_cpu(entry->rmiaddr) == rmiaddr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			if (isread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 				if (entry->readcount == bytecount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 					goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 				if (entry->flags & RMI_SMB2_MAP_FLAGS_WE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 					goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	i = rmi_smb->table_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	rmi_smb->table_index = (i + 1) % RMI_SMB2_MAP_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	/* constructs mapping table data entry. 4 bytes each entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	memset(&new_map, 0, sizeof(new_map));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	new_map.rmiaddr = cpu_to_le16(rmiaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	new_map.readcount = bytecount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	new_map.flags = !isread ? RMI_SMB2_MAP_FLAGS_WE : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	retval = smb_block_write(xport, i + 0x80, &new_map, sizeof(new_map));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		 * if not written to device mapping table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		 * clear the driver mapping table records
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		memset(&new_map, 0, sizeof(new_map));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	/* save to the driver level mapping table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	rmi_smb->mapping_table[i] = new_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	mutex_unlock(&rmi_smb->mappingtable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	*commandcode = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int rmi_smb_write_block(struct rmi_transport_dev *xport, u16 rmiaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 				const void *databuff, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	u8 commandcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	int cur_len = (int)len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	mutex_lock(&rmi_smb->page_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	while (cur_len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		 * break into 32 bytes chunks to write get command code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		int block_len = min_t(int, len, SMB_MAX_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		retval = rmi_smb_get_command_code(xport, rmiaddr, block_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 						  false, &commandcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		retval = smb_block_write(xport, commandcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 					 databuff, block_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		/* prepare to write next block of bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		cur_len -= SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		databuff += SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		rmiaddr += SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	mutex_unlock(&rmi_smb->page_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* SMB block read - wrapper over ic2_smb_read_block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static int smb_block_read(struct rmi_transport_dev *xport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			     u8 commandcode, void *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct i2c_client *client = rmi_smb->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	retval = i2c_smbus_read_block_data(client, commandcode, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static int rmi_smb_read_block(struct rmi_transport_dev *xport, u16 rmiaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			      void *databuff, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	u8 commandcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	int cur_len = (int)len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	mutex_lock(&rmi_smb->page_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	memset(databuff, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	while (cur_len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		/* break into 32 bytes chunks to write get command code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		int block_len =  min_t(int, cur_len, SMB_MAX_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		retval = rmi_smb_get_command_code(xport, rmiaddr, block_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 						  true, &commandcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		retval = smb_block_read(xport, commandcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 					databuff, block_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 			goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		/* prepare to read next block of bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		cur_len -= SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		databuff += SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		rmiaddr += SMB_MAX_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	mutex_unlock(&rmi_smb->page_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static void rmi_smb_clear_state(struct rmi_smb_xport *rmi_smb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	/* the mapping table has been flushed, discard the current one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	mutex_lock(&rmi_smb->mappingtable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	memset(rmi_smb->mapping_table, 0, sizeof(rmi_smb->mapping_table));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	mutex_unlock(&rmi_smb->mappingtable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int rmi_smb_enable_smbus_mode(struct rmi_smb_xport *rmi_smb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	/* we need to get the smbus version to activate the touchpad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	retval = rmi_smb_get_version(rmi_smb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static int rmi_smb_reset(struct rmi_transport_dev *xport, u16 reset_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	struct rmi_smb_xport *rmi_smb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		container_of(xport, struct rmi_smb_xport, xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	rmi_smb_clear_state(rmi_smb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	 * we do not call the actual reset command, it has to be handled in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	 * PS/2 or there will be races between PS/2 and SMBus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	 * PS/2 should ensure that a psmouse_reset is called before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	 * intializing the device and after it has been removed to be in a known
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	 * state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	return rmi_smb_enable_smbus_mode(rmi_smb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static const struct rmi_transport_ops rmi_smb_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.write_block	= rmi_smb_write_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	.read_block	= rmi_smb_read_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	.reset		= rmi_smb_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int rmi_smb_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 			 const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	struct rmi_device_platform_data *pdata = dev_get_platdata(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	struct rmi_smb_xport *rmi_smb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	int smbus_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		dev_err(&client->dev, "no platform data, aborting\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (!i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 				     I2C_FUNC_SMBUS_READ_BLOCK_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 				     I2C_FUNC_SMBUS_HOST_NOTIFY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 			"adapter does not support required functionality\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	if (client->irq <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		dev_err(&client->dev, "no IRQ provided, giving up\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		return client->irq ? client->irq : -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	rmi_smb = devm_kzalloc(&client->dev, sizeof(struct rmi_smb_xport),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 				GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	if (!rmi_smb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	rmi_dbg(RMI_DEBUG_XPORT, &client->dev, "Probing %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		dev_name(&client->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	rmi_smb->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	mutex_init(&rmi_smb->page_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	mutex_init(&rmi_smb->mappingtable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	rmi_smb->xport.dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	rmi_smb->xport.pdata = *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	rmi_smb->xport.pdata.irq = client->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	rmi_smb->xport.proto_name = "smb";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	rmi_smb->xport.ops = &rmi_smb_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	smbus_version = rmi_smb_get_version(rmi_smb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	if (smbus_version < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		return smbus_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	rmi_dbg(RMI_DEBUG_XPORT, &client->dev, "Smbus version is %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		smbus_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if (smbus_version != 2 && smbus_version != 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		dev_err(&client->dev, "Unrecognized SMB version %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 				smbus_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	i2c_set_clientdata(client, rmi_smb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	dev_info(&client->dev, "registering SMbus-connected sensor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	error = rmi_register_transport_device(&rmi_smb->xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		dev_err(&client->dev, "failed to register sensor: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static int rmi_smb_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	struct rmi_smb_xport *rmi_smb = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	rmi_unregister_transport_device(&rmi_smb->xport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static int __maybe_unused rmi_smb_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	struct rmi_smb_xport *rmi_smb = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	ret = rmi_driver_suspend(rmi_smb->xport.rmi_dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 		dev_warn(dev, "Failed to suspend device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int __maybe_unused rmi_smb_runtime_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	struct rmi_smb_xport *rmi_smb = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	ret = rmi_driver_suspend(rmi_smb->xport.rmi_dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 		dev_warn(dev, "Failed to suspend device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static int __maybe_unused rmi_smb_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	struct rmi_smb_xport *rmi_smb = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	struct rmi_device *rmi_dev = rmi_smb->xport.rmi_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	rmi_smb_reset(&rmi_smb->xport, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	rmi_reset(rmi_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	ret = rmi_driver_resume(rmi_smb->xport.rmi_dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 		dev_warn(dev, "Failed to resume device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static int __maybe_unused rmi_smb_runtime_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	struct rmi_smb_xport *rmi_smb = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	ret = rmi_driver_resume(rmi_smb->xport.rmi_dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		dev_warn(dev, "Failed to resume device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static const struct dev_pm_ops rmi_smb_pm = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	SET_SYSTEM_SLEEP_PM_OPS(rmi_smb_suspend, rmi_smb_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	SET_RUNTIME_PM_OPS(rmi_smb_runtime_suspend, rmi_smb_runtime_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 			   NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) static const struct i2c_device_id rmi_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	{ "rmi4_smbus", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) MODULE_DEVICE_TABLE(i2c, rmi_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static struct i2c_driver rmi_smb_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 		.name	= "rmi4_smbus",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 		.pm	= &rmi_smb_pm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	.id_table	= rmi_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	.probe		= rmi_smb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	.remove		= rmi_smb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) module_i2c_driver(rmi_smb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@redhat.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) MODULE_DESCRIPTION("RMI4 SMBus driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) MODULE_LICENSE("GPL");