drivers: tpm: clean up unused code

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

drivers/tpm/Makefile

@@ -3,8 +3,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-$(shell mkdir -p $(obj)slb9635_i2c)
-
 # TODO: Merge tpm_tis_lpc.c with tpm.c
 obj-$(CONFIG_TPM_ATMEL_TWI) += tpm_atmel_twi.o
 obj-$(CONFIG_TPM_TIS_I2C) += tpm.o

drivers/tpm/tis_i2c.c

@@ -1,185 +0,0 @@
-/*
- * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <config.h>
-#include <common.h>
-#include <fdtdec.h>
-#include <i2c.h>
-#include "slb9635_i2c/tpm.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* TPM configuration */
-struct tpm {
-	int i2c_bus;
-	int slave_addr;
-	char inited;
-	int old_bus;
-} tpm;
-
-
-static int tpm_select(void)
-{
-	int ret;
-
-	tpm.old_bus = i2c_get_bus_num();
-	if (tpm.old_bus != tpm.i2c_bus) {
-		ret = i2c_set_bus_num(tpm.i2c_bus);
-		if (ret) {
-			debug("%s: Fail to set i2c bus %d\n", __func__,
-			      tpm.i2c_bus);
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static int tpm_deselect(void)
-{
-	int ret;
-
-	if (tpm.old_bus != i2c_get_bus_num()) {
-		ret = i2c_set_bus_num(tpm.old_bus);
-		if (ret) {
-			debug("%s: Fail to restore i2c bus %d\n",
-			      __func__, tpm.old_bus);
-			return -1;
-		}
-	}
-	tpm.old_bus = -1;
-	return 0;
-}
-
-/**
- * Decode TPM configuration.
- *
- * @param dev	Returns a configuration of TPM device
- * @return 0 if ok, -1 on error
- */
-static int tpm_decode_config(struct tpm *dev)
-{
-#ifdef CONFIG_OF_CONTROL
-	const void *blob = gd->fdt_blob;
-	int node, parent;
-	int i2c_bus;
-
-	node = fdtdec_next_compatible(blob, 0, COMPAT_INFINEON_SLB9635_TPM);
-	if (node < 0) {
-		node = fdtdec_next_compatible(blob, 0,
-					      COMPAT_INFINEON_SLB9645_TPM);
-	}
-	if (node < 0) {
-		debug("%s: Node not found\n", __func__);
-		return -1;
-	}
-	parent = fdt_parent_offset(blob, node);
-	if (parent < 0) {
-		debug("%s: Cannot find node parent\n", __func__);
-		return -1;
-	}
-	i2c_bus = i2c_get_bus_num_fdt(parent);
-	if (i2c_bus < 0)
-		return -1;
-	dev->i2c_bus = i2c_bus;
-	dev->slave_addr = fdtdec_get_addr(blob, node, "reg");
-#else
-	dev->i2c_bus = CONFIG_INFINEON_TPM_I2C_BUS;
-	dev->slave_addr = CONFIG_INFINEON_TPM_I2C_ADDR;
-#endif
-	return 0;
-}
-
-int tis_init(void)
-{
-	if (tpm.inited)
-		return 0;
-
-	if (tpm_decode_config(&tpm))
-		return -1;
-
-	if (tpm_select())
-		return -1;
-
-	/*
-	 * Probe TPM twice; the first probing might fail because TPM is asleep,
-	 * and the probing can wake up TPM.
-	 */
-	if (i2c_probe(tpm.slave_addr) && i2c_probe(tpm.slave_addr)) {
-		debug("%s: fail to probe i2c addr 0x%x\n", __func__,
-		      tpm.slave_addr);
-		return -1;
-	}
-
-	tpm_deselect();
-
-	tpm.inited = 1;
-
-	return 0;
-}
-
-int tis_open(void)
-{
-	int rc;
-
-	if (!tpm.inited)
-		return -1;
-
-	if (tpm_select())
-		return -1;
-
-	rc = tpm_open(tpm.slave_addr);
-
-	tpm_deselect();
-
-	return rc;
-}
-
-int tis_close(void)
-{
-	if (!tpm.inited)
-		return -1;
-
-	if (tpm_select())
-		return -1;
-
-	tpm_close();
-
-	tpm_deselect();
-
-	return 0;
-}
-
-int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
-		uint8_t *recvbuf, size_t *rbuf_len)
-{
-	int len;
-	uint8_t buf[4096];
-
-	if (!tpm.inited)
-		return -1;
-
-	if (sizeof(buf) < sbuf_size)
-		return -1;
-
-	memcpy(buf, sendbuf, sbuf_size);
-
-	if (tpm_select())
-		return -1;
-
-	len = tpm_transmit(buf, sbuf_size);
-
-	tpm_deselect();
-
-	if (len < 10) {
-		*rbuf_len = 0;
-		return -1;
-	}
-
-	memcpy(recvbuf, buf, len);
-	*rbuf_len = len;
-
-	return 0;
-}