038b1a05ea
The keyboard and trackpad on recent MacBook's (since 8,1) and MacBookPro's (13,* and 14,*) are attached to an SPI controller instead of USB, as previously. The higher level protocol is not publicly documented and hence has been reverse engineered. As a consequence there are still a number of unknown fields and commands. However, the known parts have been working well and received extensive testing and use. In order for this driver to work, the proper SPI drivers need to be loaded too; for MB8,1 these are spi_pxa2xx_platform and spi_pxa2xx_pci; for all others they are spi_pxa2xx_platform and intel_lpss_pci. Link: https://bugzilla.kernel.org/show_bug.cgi?id=99891 Link: https://bugzilla.kernel.org/show_bug.cgi?id=108331 Signed-off-by: Ronald Tschalär <ronald@innovation.ch> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* MacBook (Pro) SPI keyboard and touchpad driver
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*
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* Copyright (c) 2015-2019 Federico Lorenzi
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* Copyright (c) 2017-2019 Ronald Tschalär
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM applespi
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#if !defined(_APPLESPI_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
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#define _APPLESPI_TRACE_H_
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#include <linux/types.h>
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#include <linux/tracepoint.h>
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#include "applespi.h"
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DECLARE_EVENT_CLASS(dump_message_template,
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TP_PROTO(enum applespi_evt_type evt_type,
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enum applespi_pkt_type pkt_type,
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u8 *buf,
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size_t len),
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TP_ARGS(evt_type, pkt_type, buf, len),
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TP_STRUCT__entry(
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__field(enum applespi_evt_type, evt_type)
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__field(enum applespi_pkt_type, pkt_type)
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__field(size_t, len)
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__dynamic_array(u8, buf, len)
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),
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TP_fast_assign(
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__entry->evt_type = evt_type;
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__entry->pkt_type = pkt_type;
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__entry->len = len;
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memcpy(__get_dynamic_array(buf), buf, len);
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),
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TP_printk("%-6s: %s",
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__print_symbolic(__entry->pkt_type,
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{ PT_READ, "read" },
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{ PT_WRITE, "write" },
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{ PT_STATUS, "status" }
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),
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__print_hex(__get_dynamic_array(buf), __entry->len))
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);
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#define DEFINE_DUMP_MESSAGE_EVENT(name) \
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DEFINE_EVENT(dump_message_template, name, \
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TP_PROTO(enum applespi_evt_type evt_type, \
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enum applespi_pkt_type pkt_type, \
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u8 *buf, \
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size_t len), \
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TP_ARGS(evt_type, pkt_type, buf, len) \
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)
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DEFINE_DUMP_MESSAGE_EVENT(applespi_tp_ini_cmd);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_backlight_cmd);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_caps_lock_cmd);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_keyboard_data);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_touchpad_data);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_unknown_data);
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DEFINE_DUMP_MESSAGE_EVENT(applespi_bad_crc);
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TRACE_EVENT(applespi_irq_received,
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TP_PROTO(enum applespi_evt_type evt_type,
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enum applespi_pkt_type pkt_type),
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TP_ARGS(evt_type, pkt_type),
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TP_STRUCT__entry(
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__field(enum applespi_evt_type, evt_type)
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__field(enum applespi_pkt_type, pkt_type)
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),
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TP_fast_assign(
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__entry->evt_type = evt_type;
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__entry->pkt_type = pkt_type;
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),
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"\n"
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);
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#endif /* _APPLESPI_TRACE_H_ */
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/* This part must be outside protection */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH ../../drivers/input/keyboard
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#define TRACE_INCLUDE_FILE applespi_trace
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#include <trace/define_trace.h>
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