1f40866feb
Also adds fixups and cleanups: - apply the child's mode/speed - implement suspend/resume support - use RF_SHAREABLE interrupts - use bus_delayed_attach_children since the transfer can use interrupts - add support for newly added spibus features (cs_delay and flags) Operation tested on Broadwell (Wildcat Point) MacBookPro12,1. Attachment also tested on Kaby Lake (Sunrise Point) Pixelbook. Reviewed by: wulf MFC after: 1 month Differential revision: https://reviews.freebsd.org/D29249
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _DEV_INTEL_SPI_H_
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#define _DEV_INTEL_SPI_H_
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <dev/acpica/acpivar.h>
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enum intelspi_vers {
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SPI_BAYTRAIL,
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SPI_BRASWELL,
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SPI_LYNXPOINT,
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SPI_SUNRISEPOINT,
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};
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/* Same order as intelspi_vers */
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static const struct intelspi_info {
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const char *desc;
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uint32_t reg_lpss_base;
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uint32_t reg_cs_ctrl;
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} intelspi_infos[] = {
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[SPI_BAYTRAIL] = {
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.desc = "Intel Bay Trail SPI Controller",
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.reg_lpss_base = 0x400,
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.reg_cs_ctrl = 0x18,
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},
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[SPI_BRASWELL] = {
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.desc = "Intel Braswell SPI Controller",
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.reg_lpss_base = 0x400,
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.reg_cs_ctrl = 0x18,
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},
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[SPI_LYNXPOINT] = {
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.desc = "Intel Lynx Point / Wildcat Point SPI Controller",
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.reg_lpss_base = 0x800,
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.reg_cs_ctrl = 0x18,
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},
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[SPI_SUNRISEPOINT] = {
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.desc = "Intel Sunrise Point SPI Controller",
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.reg_lpss_base = 0x200,
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.reg_cs_ctrl = 0x24,
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},
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};
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struct intelspi_softc {
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ACPI_HANDLE sc_handle;
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device_t sc_dev;
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enum intelspi_vers sc_vers;
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struct mtx sc_mtx;
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int sc_mem_rid;
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struct resource *sc_mem_res;
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int sc_irq_rid;
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struct resource *sc_irq_res;
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void *sc_irq_ih;
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struct spi_command *sc_cmd;
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uint32_t sc_len;
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uint32_t sc_read;
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uint32_t sc_flags;
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uint32_t sc_written;
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uint32_t sc_clock;
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uint32_t sc_mode;
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/* LPSS private register storage for suspend-resume */
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uint32_t sc_regs[9];
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};
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int intelspi_attach(device_t dev);
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int intelspi_detach(device_t dev);
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int intelspi_transfer(device_t dev, device_t child, struct spi_command *cmd);
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int intelspi_suspend(device_t dev);
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int intelspi_resume(device_t dev);
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#endif
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