| /* |
| * Copyright 2012, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <inttypes.h> |
| |
| #include "mosys/log.h" |
| #include "mosys/platform.h" |
| |
| #include "drivers/superio.h" |
| #include "drivers/ene/kb932.h" |
| #include "intf/io.h" |
| #include "lib/acpi.h" |
| #include "lib/math.h" |
| |
| #include "butterfly.h" |
| |
| /* |
| * Butterfly EC firmware specific constants |
| */ |
| #define BUTTERFLY_EC_CMD_TIMEOUT 500 |
| #define BUTTERFLY_EC_REG_BASE 0x380 |
| |
| #define BUTTERFLY_ECRAM_CPU_TMP 0x78 |
| #define BUTTERFLY_ECRAM_GPU_TMP 0x79 |
| #define BUTTERFLY_ECRAM_FANTACH_LO 0x7c |
| #define BUTTERFLY_ECRAM_FANTACH_HI 0x7d |
| #define BUTTERFLY_ECRAM_FW_VERSION 0xba |
| #define BUTTERFLY_ECRAM_FW_VERSION_LEN 6 |
| |
| static enum ene_ec butterfly_ec; |
| |
| static uint8_t read_ecram(struct platform_intf *intf, |
| uint8_t offset, uint8_t *data) |
| { |
| struct kb932_priv *ec_priv; |
| |
| MOSYS_DCHECK(intf->cb->legacy_ec->priv); |
| ec_priv = intf->cb->legacy_ec->priv; |
| |
| if (kb932_wait_ibf_clear(intf) != 1) |
| return -1; |
| |
| if (io_write8(intf, ec_priv->csr, KB932_CMD_READ_ECRAM)) |
| return -1; |
| |
| if (kb932_wait_ibf_clear(intf) != 1) |
| return -1; |
| |
| if (io_write8(intf, ec_priv->data, offset) < 0) |
| return -1; |
| |
| if (kb932_wait_obf_set(intf) != 1) |
| return -1; |
| |
| if (io_read8(intf, ec_priv->data, data)) |
| return -1; |
| |
| return 0; |
| } |
| |
| static const char *butterfly_ec_vendor(struct platform_intf *intf) |
| { |
| return "ENE"; |
| } |
| |
| static const char *butterfly_ec_name(struct platform_intf *intf) |
| { |
| return ene_name(butterfly_ec); |
| } |
| |
| /** |
| * Get butterfly vendor specific fw version string (ASCII) |
| */ |
| static const char *butterfly_ec_fw_version(struct platform_intf *intf) |
| { |
| int i; |
| static char version[BUTTERFLY_ECRAM_FW_VERSION_LEN + 1]; |
| |
| for (i = 0; i < ARRAY_SIZE(version); i++) |
| read_ecram(intf, BUTTERFLY_ECRAM_FW_VERSION + i, &version[i]); |
| version[i] = '\0'; |
| |
| return (const char *)version; |
| } |
| |
| int butterfly_ec_setup(struct platform_intf *intf) |
| { |
| butterfly_ec = ene_kb932_detect(intf, BUTTERFLY_EC_REG_BASE); |
| if (butterfly_ec == ENE_UNKNOWN) |
| return -1; |
| |
| lprintf(LOG_DEBUG, "%s: Found KB3940\n", __func__); |
| return 0; |
| } |
| |
| struct kb932_priv butterfly_ec_priv = { |
| .csr = ACPI_EC_SC, |
| .data = ACPI_EC_DATA, |
| .reg_base = BUTTERFLY_EC_REG_BASE, |
| .cmd_timeout_ms = BUTTERFLY_EC_CMD_TIMEOUT, |
| }; |
| |
| struct legacy_ec_cb butterfly_ec_cb = { |
| .vendor = &butterfly_ec_vendor, |
| .name = &butterfly_ec_name, |
| .fw_version = &butterfly_ec_fw_version, |
| .priv = &butterfly_ec_priv, |
| }; |