mfd / platform: cros_ec: Reorganize platform and mfd includes
There is a bit of mess between cros-ec mfd includes and platform
includes. For example, we have a linux/mfd/cros_ec.h include that
exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
we have a linux/mfd/cros_ec_commands.h file that is non related to the
multifunction device (in the sense that is not exporting any function of
the mfd device). This causes crossed includes between mfd and
platform/chrome subsystems and makes the code difficult to read, apart
from creating 'curious' situations where a platform/chrome driver includes
a linux/mfd/cros_ec.h file just to get the exported functions that are
implemented in another platform/chrome driver.
In order to have a better separation on what the cros-ec multifunction
driver does and what the cros-ec core provides move and rework the
affected includes doing:
- Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
- Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
driver from include/linux/mfd/cros_ec.h to a new file
include/linux/platform_data/cros_ec_proto.h
- Update all the drivers with the new includes, so
- Drivers that only need to know about the protocol include
- linux/platform_data/cros_ec_proto.h
- linux/platform_data/cros_ec_commands.h
- Drivers that need to know about the cros-ec mfd device also include
- linux/mfd/cros_ec.h
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Series changes: 3
- Fix dereferencing pointer to incomplete type 'struct cros_ec_dev' (lkp)
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Enric Balletbo i Serra
Lee Jones
parent
2fa2b980e3
commit
840d9f131f
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@ -6,10 +6,11 @@
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#include <linux/extcon-provider.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/module.h>
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#include <linux/notifier.h>
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#include <linux/of.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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@ -16,9 +16,9 @@
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#include <linux/acpi.h>
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#include <linux/hid.h>
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#include <linux/leds.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/pm_wakeup.h>
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#include <asm/unaligned.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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@ -18,9 +18,10 @@
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#include <linux/iio/triggered_buffer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#define DRV_NAME "cros-ec-accel-legacy"
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#include <linux/iio/triggered_buffer.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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@ -17,8 +17,9 @@
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#include <linux/iio/triggered_buffer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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static char *cros_ec_loc[] = {
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#include <linux/iio/trigger_consumer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/kernel.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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/*
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@ -22,8 +22,8 @@
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#include <linux/slab.h>
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#include <linux/sysrq.h>
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#include <linux/input/matrix_keypad.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <asm/unaligned.h>
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#include <linux/cec.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <media/cec.h>
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#include <media/cec-notifier.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#define DRV_NAME "cros-ec-cec"
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#include <linux/mfd/core.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/cros_ec_chardev.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/slab.h>
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#define DRV_NAME "cros-ec-dev"
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/suspend.h>
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#include <asm/unaligned.h>
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#include <linux/device.h>
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#include <linux/fs.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/miscdevice.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_chardev.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/poll.h>
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#include <linux/sched.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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// (ISH-TP).
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#include <linux/delay.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/intel-ish-client-if.h>
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/*
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#include <linux/fs.h>
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#include <linux/kobject.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/sched.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/printk.h>
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#include <linux/suspend.h>
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//
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// Copyright (C) 2015 Google, Inc
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#include <linux/mfd/cros_ec.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/slab.h>
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#include <asm/unaligned.h>
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/of.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/rpmsg.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/of.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/spi/spi.h>
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#include <linux/fs.h>
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#include <linux/kobject.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/printk.h>
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#include <linux/slab.h>
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#define TRACE_SYMBOL(a) {a, #a}
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// Generate the list using the following script:
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// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
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// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
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#define EC_CMDS \
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TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
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TRACE_SYMBOL(EC_CMD_HELLO), \
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#if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
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#define _CROS_EC_TRACE_H_
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#include <linux/bits.h>
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#include <linux/types.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/tracepoint.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/slab.h>
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#define DRV_NAME "cros-ec-vbc"
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*/
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#include <linux/ktime.h>
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#include <linux/math64.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/math64.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
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#include <linux/rtc.h>
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* Copyright (c) 2014 - 2018 Google, Inc
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*/
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#include <linux/module.h>
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#include <linux/mfd/cros_ec.h>
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#include <linux/mfd/cros_ec_commands.h>
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#include <linux/module.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/platform_device.h>
|
||||
#include <linux/power_supply.h>
|
||||
#include <linux/slab.h>
|
||||
|
|
|
|||
|
|
@ -6,8 +6,8 @@
|
|||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/mfd/cros_ec.h>
|
||||
#include <linux/mfd/cros_ec_commands.h>
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
#include <linux/platform_data/cros_ec_proto.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pwm.h>
|
||||
#include <linux/slab.h>
|
||||
|
|
|
|||
|
|
@ -6,8 +6,9 @@
|
|||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mfd/cros_ec.h>
|
||||
#include <linux/mfd/cros_ec_commands.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
#include <linux/platform_data/cros_ec_proto.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/slab.h>
|
||||
|
|
|
|||
|
|
@ -310,7 +310,6 @@ header-test- += linux/mfd/adp5520.h
|
|||
header-test- += linux/mfd/arizona/pdata.h
|
||||
header-test- += linux/mfd/as3711.h
|
||||
header-test- += linux/mfd/as3722.h
|
||||
header-test- += linux/mfd/cros_ec_commands.h
|
||||
header-test- += linux/mfd/da903x.h
|
||||
header-test- += linux/mfd/da9055/pdata.h
|
||||
header-test- += linux/mfd/da9063/pdata.h
|
||||
|
|
@ -480,6 +479,7 @@ header-test- += linux/platform_data/ata-pxa.h
|
|||
header-test- += linux/platform_data/atmel.h
|
||||
header-test- += linux/platform_data/bh1770glc.h
|
||||
header-test- += linux/platform_data/brcmfmac.h
|
||||
header-test- += linux/platform_data/cros_ec_commands.h
|
||||
header-test- += linux/platform_data/clk-u300.h
|
||||
header-test- += linux/platform_data/cyttsp4.h
|
||||
header-test- += linux/platform_data/dma-coh901318.h
|
||||
|
|
|
|||
|
|
@ -10,7 +10,8 @@
|
|||
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/irqreturn.h>
|
||||
#include <linux/mfd/cros_ec.h>
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
#include <linux/platform_data/cros_ec_proto.h>
|
||||
|
||||
enum {
|
||||
CROS_EC_SENSOR_X,
|
||||
|
|
|
|||
|
|
@ -8,186 +8,7 @@
|
|||
#ifndef __LINUX_MFD_CROS_EC_H
|
||||
#define __LINUX_MFD_CROS_EC_H
|
||||
|
||||
#include <linux/cdev.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/mfd/cros_ec_commands.h>
|
||||
#include <linux/mutex.h>
|
||||
|
||||
#define CROS_EC_DEV_NAME "cros_ec"
|
||||
#define CROS_EC_DEV_FP_NAME "cros_fp"
|
||||
#define CROS_EC_DEV_PD_NAME "cros_pd"
|
||||
#define CROS_EC_DEV_TP_NAME "cros_tp"
|
||||
#define CROS_EC_DEV_ISH_NAME "cros_ish"
|
||||
#define CROS_EC_DEV_SCP_NAME "cros_scp"
|
||||
|
||||
/*
|
||||
* The EC is unresponsive for a time after a reboot command. Add a
|
||||
* simple delay to make sure that the bus stays locked.
|
||||
*/
|
||||
#define EC_REBOOT_DELAY_MS 50
|
||||
|
||||
/*
|
||||
* Max bus-specific overhead incurred by request/responses.
|
||||
* I2C requires 1 additional byte for requests.
|
||||
* I2C requires 2 additional bytes for responses.
|
||||
* SPI requires up to 32 additional bytes for responses.
|
||||
*/
|
||||
#define EC_PROTO_VERSION_UNKNOWN 0
|
||||
#define EC_MAX_REQUEST_OVERHEAD 1
|
||||
#define EC_MAX_RESPONSE_OVERHEAD 32
|
||||
|
||||
/*
|
||||
* Command interface between EC and AP, for LPC, I2C and SPI interfaces.
|
||||
*/
|
||||
enum {
|
||||
EC_MSG_TX_HEADER_BYTES = 3,
|
||||
EC_MSG_TX_TRAILER_BYTES = 1,
|
||||
EC_MSG_TX_PROTO_BYTES = EC_MSG_TX_HEADER_BYTES +
|
||||
EC_MSG_TX_TRAILER_BYTES,
|
||||
EC_MSG_RX_PROTO_BYTES = 3,
|
||||
|
||||
/* Max length of messages for proto 2*/
|
||||
EC_PROTO2_MSG_BYTES = EC_PROTO2_MAX_PARAM_SIZE +
|
||||
EC_MSG_TX_PROTO_BYTES,
|
||||
|
||||
EC_MAX_MSG_BYTES = 64 * 1024,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_command - Information about a ChromeOS EC command.
|
||||
* @version: Command version number (often 0).
|
||||
* @command: Command to send (EC_CMD_...).
|
||||
* @outsize: Outgoing length in bytes.
|
||||
* @insize: Max number of bytes to accept from the EC.
|
||||
* @result: EC's response to the command (separate from communication failure).
|
||||
* @data: Where to put the incoming data from EC and outgoing data to EC.
|
||||
*/
|
||||
struct cros_ec_command {
|
||||
uint32_t version;
|
||||
uint32_t command;
|
||||
uint32_t outsize;
|
||||
uint32_t insize;
|
||||
uint32_t result;
|
||||
uint8_t data[0];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_device - Information about a ChromeOS EC device.
|
||||
* @phys_name: Name of physical comms layer (e.g. 'i2c-4').
|
||||
* @dev: Device pointer for physical comms device
|
||||
* @was_wake_device: True if this device was set to wake the system from
|
||||
* sleep at the last suspend.
|
||||
* @cros_class: The class structure for this device.
|
||||
* @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
|
||||
* @offset: Is within EC_LPC_ADDR_MEMMAP region.
|
||||
* @bytes: Number of bytes to read. zero means "read a string" (including
|
||||
* the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
|
||||
* read. Caller must ensure that the buffer is large enough for the
|
||||
* result when reading a string.
|
||||
* @max_request: Max size of message requested.
|
||||
* @max_response: Max size of message response.
|
||||
* @max_passthru: Max sice of passthru message.
|
||||
* @proto_version: The protocol version used for this device.
|
||||
* @priv: Private data.
|
||||
* @irq: Interrupt to use.
|
||||
* @id: Device id.
|
||||
* @din: Input buffer (for data from EC). This buffer will always be
|
||||
* dword-aligned and include enough space for up to 7 word-alignment
|
||||
* bytes also, so we can ensure that the body of the message is always
|
||||
* dword-aligned (64-bit). We use this alignment to keep ARM and x86
|
||||
* happy. Probably word alignment would be OK, there might be a small
|
||||
* performance advantage to using dword.
|
||||
* @dout: Output buffer (for data to EC). This buffer will always be
|
||||
* dword-aligned and include enough space for up to 7 word-alignment
|
||||
* bytes also, so we can ensure that the body of the message is always
|
||||
* dword-aligned (64-bit). We use this alignment to keep ARM and x86
|
||||
* happy. Probably word alignment would be OK, there might be a small
|
||||
* performance advantage to using dword.
|
||||
* @din_size: Size of din buffer to allocate (zero to use static din).
|
||||
* @dout_size: Size of dout buffer to allocate (zero to use static dout).
|
||||
* @wake_enabled: True if this device can wake the system from sleep.
|
||||
* @suspended: True if this device had been suspended.
|
||||
* @cmd_xfer: Send command to EC and get response.
|
||||
* Returns the number of bytes received if the communication
|
||||
* succeeded, but that doesn't mean the EC was happy with the
|
||||
* command. The caller should check msg.result for the EC's result
|
||||
* code.
|
||||
* @pkt_xfer: Send packet to EC and get response.
|
||||
* @lock: One transaction at a time.
|
||||
* @mkbp_event_supported: True if this EC supports the MKBP event protocol.
|
||||
* @host_sleep_v1: True if this EC supports the sleep v1 command.
|
||||
* @event_notifier: Interrupt event notifier for transport devices.
|
||||
* @event_data: Raw payload transferred with the MKBP event.
|
||||
* @event_size: Size in bytes of the event data.
|
||||
* @host_event_wake_mask: Mask of host events that cause wake from suspend.
|
||||
* @ec: The platform_device used by the mfd driver to interface with the
|
||||
* main EC.
|
||||
* @pd: The platform_device used by the mfd driver to interface with the
|
||||
* PD behind an EC.
|
||||
*/
|
||||
struct cros_ec_device {
|
||||
/* These are used by other drivers that want to talk to the EC */
|
||||
const char *phys_name;
|
||||
struct device *dev;
|
||||
bool was_wake_device;
|
||||
struct class *cros_class;
|
||||
int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
|
||||
unsigned int bytes, void *dest);
|
||||
|
||||
/* These are used to implement the platform-specific interface */
|
||||
u16 max_request;
|
||||
u16 max_response;
|
||||
u16 max_passthru;
|
||||
u16 proto_version;
|
||||
void *priv;
|
||||
int irq;
|
||||
u8 *din;
|
||||
u8 *dout;
|
||||
int din_size;
|
||||
int dout_size;
|
||||
bool wake_enabled;
|
||||
bool suspended;
|
||||
int (*cmd_xfer)(struct cros_ec_device *ec,
|
||||
struct cros_ec_command *msg);
|
||||
int (*pkt_xfer)(struct cros_ec_device *ec,
|
||||
struct cros_ec_command *msg);
|
||||
struct mutex lock;
|
||||
bool mkbp_event_supported;
|
||||
bool host_sleep_v1;
|
||||
struct blocking_notifier_head event_notifier;
|
||||
|
||||
struct ec_response_get_next_event_v1 event_data;
|
||||
int event_size;
|
||||
u32 host_event_wake_mask;
|
||||
u32 last_resume_result;
|
||||
|
||||
/* The platform devices used by the mfd driver */
|
||||
struct platform_device *ec;
|
||||
struct platform_device *pd;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
|
||||
* @sensor_num: Id of the sensor, as reported by the EC.
|
||||
*/
|
||||
struct cros_ec_sensor_platform {
|
||||
u8 sensor_num;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_platform - ChromeOS EC platform information.
|
||||
* @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
|
||||
* used in /dev/ and sysfs.
|
||||
* @cmd_offset: Offset to apply for each command. Set when
|
||||
* registering a device behind another one.
|
||||
*/
|
||||
struct cros_ec_platform {
|
||||
const char *ec_name;
|
||||
u16 cmd_offset;
|
||||
};
|
||||
|
||||
struct cros_ec_debugfs;
|
||||
|
||||
/**
|
||||
* struct cros_ec_dev - ChromeOS EC device entry point.
|
||||
|
|
@ -211,133 +32,4 @@ struct cros_ec_dev {
|
|||
|
||||
#define to_cros_ec_dev(dev) container_of(dev, struct cros_ec_dev, class_dev)
|
||||
|
||||
/**
|
||||
* cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
|
||||
* @ec_dev: Device to suspend.
|
||||
*
|
||||
* This can be called by drivers to handle a suspend event.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_suspend(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
|
||||
* @ec_dev: Device to resume.
|
||||
*
|
||||
* This can be called by drivers to handle a resume event.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_resume(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
|
||||
* @ec_dev: Device to register.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* This is intended to be used by all ChromeOS EC drivers, but at present
|
||||
* only SPI uses it. Once LPC uses the same protocol it can start using it.
|
||||
* I2C could use it now, with a refactor of the existing code.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_check_result() - Check ec_msg->result.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to check.
|
||||
*
|
||||
* This is used by ChromeOS EC drivers to check the ec_msg->result for
|
||||
* errors and to warn about them.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_check_result(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* Call this to send a command to the ChromeOS EC. This should be used
|
||||
* instead of calling the EC's cmd_xfer() callback directly.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* This function is identical to cros_ec_cmd_xfer, except it returns success
|
||||
* status only if both the command was transmitted successfully and the EC
|
||||
* replied with success status. It's not necessary to check msg->result when
|
||||
* using this function.
|
||||
*
|
||||
* Return: The number of bytes transferred on success or negative error code.
|
||||
*/
|
||||
int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_register() - Register a new ChromeOS EC, using the provided info.
|
||||
* @ec_dev: Device to register.
|
||||
*
|
||||
* Before calling this, allocate a pointer to a new device and then fill
|
||||
* in all the fields up to the --private-- marker.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_register(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_unregister() - Remove a ChromeOS EC.
|
||||
* @ec_dev: Device to unregister.
|
||||
*
|
||||
* Call this to deregister a ChromeOS EC, then clean up any private data.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_unregister(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_query_all() - Query the protocol version supported by the
|
||||
* ChromeOS EC.
|
||||
* @ec_dev: Device to register.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_query_all(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
|
||||
* @ec_dev: Device to fetch event from.
|
||||
* @wake_event: Pointer to a bool set to true upon return if the event might be
|
||||
* treated as a wake event. Ignored if null.
|
||||
*
|
||||
* Return: negative error code on errors; 0 for no data; or else number of
|
||||
* bytes received (i.e., an event was retrieved successfully). Event types are
|
||||
* written out to @ec_dev->event_data.event_type on success.
|
||||
*/
|
||||
int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
|
||||
|
||||
/**
|
||||
* cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
|
||||
* @ec_dev: Device to fetch event from.
|
||||
*
|
||||
* When MKBP is supported, when the EC raises an interrupt, we collect the
|
||||
* events raised and call the functions in the ec notifier. This function
|
||||
* is a helper to know which events are raised.
|
||||
*
|
||||
* Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
|
||||
*/
|
||||
u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
|
||||
|
||||
#endif /* __LINUX_MFD_CROS_EC_H */
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
#include <linux/ioctl.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#include <linux/mfd/cros_ec.h>
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
|
||||
#define CROS_EC_DEV_VERSION "1.0.0"
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,319 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* ChromeOS Embedded Controller protocol interface.
|
||||
*
|
||||
* Copyright (C) 2012 Google, Inc
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_CROS_EC_PROTO_H
|
||||
#define __LINUX_CROS_EC_PROTO_H
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/notifier.h>
|
||||
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
|
||||
#define CROS_EC_DEV_NAME "cros_ec"
|
||||
#define CROS_EC_DEV_FP_NAME "cros_fp"
|
||||
#define CROS_EC_DEV_ISH_NAME "cros_ish"
|
||||
#define CROS_EC_DEV_PD_NAME "cros_pd"
|
||||
#define CROS_EC_DEV_SCP_NAME "cros_scp"
|
||||
#define CROS_EC_DEV_TP_NAME "cros_tp"
|
||||
|
||||
/*
|
||||
* The EC is unresponsive for a time after a reboot command. Add a
|
||||
* simple delay to make sure that the bus stays locked.
|
||||
*/
|
||||
#define EC_REBOOT_DELAY_MS 50
|
||||
|
||||
/*
|
||||
* Max bus-specific overhead incurred by request/responses.
|
||||
* I2C requires 1 additional byte for requests.
|
||||
* I2C requires 2 additional bytes for responses.
|
||||
* SPI requires up to 32 additional bytes for responses.
|
||||
*/
|
||||
#define EC_PROTO_VERSION_UNKNOWN 0
|
||||
#define EC_MAX_REQUEST_OVERHEAD 1
|
||||
#define EC_MAX_RESPONSE_OVERHEAD 32
|
||||
|
||||
/*
|
||||
* Command interface between EC and AP, for LPC, I2C and SPI interfaces.
|
||||
*/
|
||||
enum {
|
||||
EC_MSG_TX_HEADER_BYTES = 3,
|
||||
EC_MSG_TX_TRAILER_BYTES = 1,
|
||||
EC_MSG_TX_PROTO_BYTES = EC_MSG_TX_HEADER_BYTES +
|
||||
EC_MSG_TX_TRAILER_BYTES,
|
||||
EC_MSG_RX_PROTO_BYTES = 3,
|
||||
|
||||
/* Max length of messages for proto 2*/
|
||||
EC_PROTO2_MSG_BYTES = EC_PROTO2_MAX_PARAM_SIZE +
|
||||
EC_MSG_TX_PROTO_BYTES,
|
||||
|
||||
EC_MAX_MSG_BYTES = 64 * 1024,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_command - Information about a ChromeOS EC command.
|
||||
* @version: Command version number (often 0).
|
||||
* @command: Command to send (EC_CMD_...).
|
||||
* @outsize: Outgoing length in bytes.
|
||||
* @insize: Max number of bytes to accept from the EC.
|
||||
* @result: EC's response to the command (separate from communication failure).
|
||||
* @data: Where to put the incoming data from EC and outgoing data to EC.
|
||||
*/
|
||||
struct cros_ec_command {
|
||||
uint32_t version;
|
||||
uint32_t command;
|
||||
uint32_t outsize;
|
||||
uint32_t insize;
|
||||
uint32_t result;
|
||||
uint8_t data[0];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_device - Information about a ChromeOS EC device.
|
||||
* @phys_name: Name of physical comms layer (e.g. 'i2c-4').
|
||||
* @dev: Device pointer for physical comms device
|
||||
* @was_wake_device: True if this device was set to wake the system from
|
||||
* sleep at the last suspend.
|
||||
* @cros_class: The class structure for this device.
|
||||
* @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
|
||||
* @offset: Is within EC_LPC_ADDR_MEMMAP region.
|
||||
* @bytes: Number of bytes to read. zero means "read a string" (including
|
||||
* the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
|
||||
* read. Caller must ensure that the buffer is large enough for the
|
||||
* result when reading a string.
|
||||
* @max_request: Max size of message requested.
|
||||
* @max_response: Max size of message response.
|
||||
* @max_passthru: Max sice of passthru message.
|
||||
* @proto_version: The protocol version used for this device.
|
||||
* @priv: Private data.
|
||||
* @irq: Interrupt to use.
|
||||
* @id: Device id.
|
||||
* @din: Input buffer (for data from EC). This buffer will always be
|
||||
* dword-aligned and include enough space for up to 7 word-alignment
|
||||
* bytes also, so we can ensure that the body of the message is always
|
||||
* dword-aligned (64-bit). We use this alignment to keep ARM and x86
|
||||
* happy. Probably word alignment would be OK, there might be a small
|
||||
* performance advantage to using dword.
|
||||
* @dout: Output buffer (for data to EC). This buffer will always be
|
||||
* dword-aligned and include enough space for up to 7 word-alignment
|
||||
* bytes also, so we can ensure that the body of the message is always
|
||||
* dword-aligned (64-bit). We use this alignment to keep ARM and x86
|
||||
* happy. Probably word alignment would be OK, there might be a small
|
||||
* performance advantage to using dword.
|
||||
* @din_size: Size of din buffer to allocate (zero to use static din).
|
||||
* @dout_size: Size of dout buffer to allocate (zero to use static dout).
|
||||
* @wake_enabled: True if this device can wake the system from sleep.
|
||||
* @suspended: True if this device had been suspended.
|
||||
* @cmd_xfer: Send command to EC and get response.
|
||||
* Returns the number of bytes received if the communication
|
||||
* succeeded, but that doesn't mean the EC was happy with the
|
||||
* command. The caller should check msg.result for the EC's result
|
||||
* code.
|
||||
* @pkt_xfer: Send packet to EC and get response.
|
||||
* @lock: One transaction at a time.
|
||||
* @mkbp_event_supported: True if this EC supports the MKBP event protocol.
|
||||
* @host_sleep_v1: True if this EC supports the sleep v1 command.
|
||||
* @event_notifier: Interrupt event notifier for transport devices.
|
||||
* @event_data: Raw payload transferred with the MKBP event.
|
||||
* @event_size: Size in bytes of the event data.
|
||||
* @host_event_wake_mask: Mask of host events that cause wake from suspend.
|
||||
* @ec: The platform_device used by the mfd driver to interface with the
|
||||
* main EC.
|
||||
* @pd: The platform_device used by the mfd driver to interface with the
|
||||
* PD behind an EC.
|
||||
*/
|
||||
struct cros_ec_device {
|
||||
/* These are used by other drivers that want to talk to the EC */
|
||||
const char *phys_name;
|
||||
struct device *dev;
|
||||
bool was_wake_device;
|
||||
struct class *cros_class;
|
||||
int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
|
||||
unsigned int bytes, void *dest);
|
||||
|
||||
/* These are used to implement the platform-specific interface */
|
||||
u16 max_request;
|
||||
u16 max_response;
|
||||
u16 max_passthru;
|
||||
u16 proto_version;
|
||||
void *priv;
|
||||
int irq;
|
||||
u8 *din;
|
||||
u8 *dout;
|
||||
int din_size;
|
||||
int dout_size;
|
||||
bool wake_enabled;
|
||||
bool suspended;
|
||||
int (*cmd_xfer)(struct cros_ec_device *ec,
|
||||
struct cros_ec_command *msg);
|
||||
int (*pkt_xfer)(struct cros_ec_device *ec,
|
||||
struct cros_ec_command *msg);
|
||||
struct mutex lock;
|
||||
bool mkbp_event_supported;
|
||||
bool host_sleep_v1;
|
||||
struct blocking_notifier_head event_notifier;
|
||||
|
||||
struct ec_response_get_next_event_v1 event_data;
|
||||
int event_size;
|
||||
u32 host_event_wake_mask;
|
||||
u32 last_resume_result;
|
||||
|
||||
/* The platform devices used by the mfd driver */
|
||||
struct platform_device *ec;
|
||||
struct platform_device *pd;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
|
||||
* @sensor_num: Id of the sensor, as reported by the EC.
|
||||
*/
|
||||
struct cros_ec_sensor_platform {
|
||||
u8 sensor_num;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cros_ec_platform - ChromeOS EC platform information.
|
||||
* @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
|
||||
* used in /dev/ and sysfs.
|
||||
* @cmd_offset: Offset to apply for each command. Set when
|
||||
* registering a device behind another one.
|
||||
*/
|
||||
struct cros_ec_platform {
|
||||
const char *ec_name;
|
||||
u16 cmd_offset;
|
||||
};
|
||||
|
||||
/**
|
||||
* cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
|
||||
* @ec_dev: Device to suspend.
|
||||
*
|
||||
* This can be called by drivers to handle a suspend event.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_suspend(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
|
||||
* @ec_dev: Device to resume.
|
||||
*
|
||||
* This can be called by drivers to handle a resume event.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_resume(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
|
||||
* @ec_dev: Device to register.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* This is intended to be used by all ChromeOS EC drivers, but at present
|
||||
* only SPI uses it. Once LPC uses the same protocol it can start using it.
|
||||
* I2C could use it now, with a refactor of the existing code.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_check_result() - Check ec_msg->result.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to check.
|
||||
*
|
||||
* This is used by ChromeOS EC drivers to check the ec_msg->result for
|
||||
* errors and to warn about them.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_check_result(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* Call this to send a command to the ChromeOS EC. This should be used
|
||||
* instead of calling the EC's cmd_xfer() callback directly.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
|
||||
* @ec_dev: EC device.
|
||||
* @msg: Message to write.
|
||||
*
|
||||
* This function is identical to cros_ec_cmd_xfer, except it returns success
|
||||
* status only if both the command was transmitted successfully and the EC
|
||||
* replied with success status. It's not necessary to check msg->result when
|
||||
* using this function.
|
||||
*
|
||||
* Return: The number of bytes transferred on success or negative error code.
|
||||
*/
|
||||
int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
|
||||
struct cros_ec_command *msg);
|
||||
|
||||
/**
|
||||
* cros_ec_register() - Register a new ChromeOS EC, using the provided info.
|
||||
* @ec_dev: Device to register.
|
||||
*
|
||||
* Before calling this, allocate a pointer to a new device and then fill
|
||||
* in all the fields up to the --private-- marker.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_register(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_unregister() - Remove a ChromeOS EC.
|
||||
* @ec_dev: Device to unregister.
|
||||
*
|
||||
* Call this to deregister a ChromeOS EC, then clean up any private data.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_unregister(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_query_all() - Query the protocol version supported by the
|
||||
* ChromeOS EC.
|
||||
* @ec_dev: Device to register.
|
||||
*
|
||||
* Return: 0 on success or negative error code.
|
||||
*/
|
||||
int cros_ec_query_all(struct cros_ec_device *ec_dev);
|
||||
|
||||
/**
|
||||
* cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
|
||||
* @ec_dev: Device to fetch event from.
|
||||
* @wake_event: Pointer to a bool set to true upon return if the event might be
|
||||
* treated as a wake event. Ignored if null.
|
||||
*
|
||||
* Return: negative error code on errors; 0 for no data; or else number of
|
||||
* bytes received (i.e., an event was retrieved successfully). Event types are
|
||||
* written out to @ec_dev->event_data.event_type on success.
|
||||
*/
|
||||
int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
|
||||
|
||||
/**
|
||||
* cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
|
||||
* @ec_dev: Device to fetch event from.
|
||||
*
|
||||
* When MKBP is supported, when the EC raises an interrupt, we collect the
|
||||
* events raised and call the functions in the ec notifier. This function
|
||||
* is a helper to know which events are raised.
|
||||
*
|
||||
* Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
|
||||
*/
|
||||
u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
|
||||
|
||||
#endif /* __LINUX_CROS_EC_PROTO_H */
|
||||
|
|
@ -9,9 +9,9 @@
|
|||
#include <linux/delay.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mfd/cros_ec.h>
|
||||
#include <linux/mfd/cros_ec_commands.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_data/cros_ec_commands.h>
|
||||
#include <linux/platform_data/cros_ec_proto.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
|
|
|
|||
Loading…
Reference in New Issue