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linux-stable/include/linux/greybus/svc.h

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staging: greybus: fix up SPDX comment in .h files When these files originally got an SPDX tag, I used // instead of /* */ for the .h files. Fix this up to use // properly. Cc: Johan Hovold <johan@kernel.org> Cc: greybus-dev@lists.linaro.org Cc: devel@driverdev.osuosl.org Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Alex Elder <elder@kernel.org> Link: https://lore.kernel.org/r/20190825055429.18547-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-25 05:54:21 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
greybus: introduce SVC protocol This patch adds support for the Greybus SVC protocol. We may want to rearrange protocol numbers at some point, since this is a pretty fundamental protocol. Note: It has only been compile tested; no SVC CPorts have yet been defined, so this code is not yet exercised. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-05-22 18:02:08 +00:00
/*
* Greybus SVC code
*
* Copyright 2015 Google Inc.
* Copyright 2015 Linaro Ltd.
*/
#ifndef __SVC_H
#define __SVC_H
staging: greybus: add missing includes Before moving greybus core out of staging and moving header files to include/linux some greybus header files were missing the necessary includes. This would trigger compilation faillures with some example errors logged bellow for with CONFIG_KERNEL_HEADER_TEST=y. So, add the necessary headers to compile clean before relocating the header files. ./include/linux/greybus/hd.h:23:50: error: unknown type name 'u16' int (*cport_disable)(struct gb_host_device *hd, u16 cport_id); ^~~ ./include/linux/greybus/greybus_protocols.h:1314:2: error: unknown type name '__u8' __u8 data[0]; ^~~~ ./include/linux/greybus/hd.h:24:52: error: unknown type name 'u16' int (*cport_connected)(struct gb_host_device *hd, u16 cport_id); ^~~ ./include/linux/greybus/hd.h:25:48: error: unknown type name 'u16' int (*cport_flush)(struct gb_host_device *hd, u16 cport_id); ^~~ ./include/linux/greybus/hd.h:26:51: error: unknown type name 'u16' int (*cport_shutdown)(struct gb_host_device *hd, u16 cport_id, ^~~ ./include/linux/greybus/hd.h:27:5: error: unknown type name 'u8' u8 phase, unsigned int timeout); ^~ ./include/linux/greybus/hd.h:28:50: error: unknown type name 'u16' int (*cport_quiesce)(struct gb_host_device *hd, u16 cport_id, ^~~ ./include/linux/greybus/hd.h:29:5: error: unknown type name 'size_t' size_t peer_space, unsigned int timeout); ^~~~~~ ./include/linux/greybus/hd.h:29:5: note: 'size_t' is defined in header '<stddef.h>'; did you forget to '#include <stddef.h>'? ./include/linux/greybus/hd.h:1:1: +#include <stddef.h> /* SPDX-License-Identifier: GPL-2.0 */ ./include/linux/greybus/hd.h:29:5: size_t peer_space, unsigned int timeout); ^~~~~~ ./include/linux/greybus/hd.h:30:48: error: unknown type name 'u16' int (*cport_clear)(struct gb_host_device *hd, u16 cport_id); ^~~ ./include/linux/greybus/hd.h:32:49: error: unknown type name 'u16' int (*message_send)(struct gb_host_device *hd, u16 dest_cport_id, ^~~ ./include/linux/greybus/hd.h:33:32: error: unknown type name 'gfp_t' struct gb_message *message, gfp_t gfp_mask); ^~~~~ ./include/linux/greybus/hd.h:35:55: error: unknown type name 'u16' int (*latency_tag_enable)(struct gb_host_device *hd, u16 cport_id); Reported-by: kbuild test robot <lkp@intel.com> Reported-by: Gao Xiang <hsiangkao@aol.com> Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com> Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Link: https://lore.kernel.org/r/20190827155302.25704-1-rui.silva@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-27 15:53:02 +00:00
#include <linux/types.h>
#include <linux/device.h>
staging: greybus: fix more header declarations More headers needed to be fixed when moving greybus out of staging and enabling the COMPILE_TEST option. Add forward declarations for the needed structures. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Reviewed-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20190828124825.20800-1-rui.silva@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-28 12:48:25 +00:00
struct gb_svc_l2_timer_cfg;
greybus: svc: indent CPort flag defines properly Use tabs to indent CPort-flag values. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-03-29 22:55:59 +00:00
#define GB_SVC_CPORT_FLAG_E2EFC BIT(0)
#define GB_SVC_CPORT_FLAG_CSD_N BIT(1)
#define GB_SVC_CPORT_FLAG_CSV_N BIT(2)
greybus: connection: generalise CPortFlags handling Generalise the svc connection-create helper to accept a cport-flags argument and handle the flags in the connection code instead. Note that the camera driver currently manages its data connection directly. We keep E2EFC enabled for now even though it will soon need to be disabled due to some pending firmware updates. Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-03-03 12:34:38 +00:00
greybus: svc: register svc device at hello Register the svc device upon reception of the HELLO request. The SVC HELLO request contains the endo id and AP interface id, which will be exposed from the svc device rather than the endo. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-11-25 14:59:08 +00:00
enum gb_svc_state {
GB_SVC_STATE_RESET,
GB_SVC_STATE_PROTOCOL_VERSION,
GB_SVC_STATE_SVC_HELLO,
};
greybus: svc_watchdog: Add sysfs file to change the behavior of bite Currently, AP performs unipro_reset if SVC fails to response to its ping. While this error recovery is best suited for the end-user experience, errors in the UniPro network could potentially go unnoticed by the QA and fishfooders in the development phase of the project. This patch adds an option to trigger a kernel panic so logs can be collected for analysis. Testing Done: - Reproduce issue and observe kernel panic when watchdob_control is changed to 'panic' Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-07-26 23:27:28 +00:00
enum gb_svc_watchdog_bite {
GB_SVC_WATCHDOG_BITE_RESET_UNIPRO = 0,
GB_SVC_WATCHDOG_BITE_PANIC_KERNEL,
};
greybus: svc: add a "watchdog" to check the network health Now that we have a svc ping command, let's add a watchdog to call it every so often (1 second at the moment.) If it finds something went wrong, post a stern message to the kernel log and call: start unipro_reset to reset the whole greybus hardware subsystem. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-21 06:51:49 +00:00
struct gb_svc_watchdog;
greybus: svc: add AP power measurements debugfs support This change adds the AP Power Monitor functions to read out all the rails power information monitored by the SVC. Testing Done: - $ cat /d/greybus/1-svc/pwrmon/*/* and validate the output with the svc stub power monitor functions - $ tree /d/greybus/1-svc/pwrmon | | | |---pwrmon | | | | |---DUMMY_RAIL_1 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_2 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_3 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_4 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-04-20 23:55:08 +00:00
struct svc_debugfs_pwrmon_rail {
u8 id;
struct gb_svc *svc;
};
greybus: svc: register svc device at hello Register the svc device upon reception of the HELLO request. The SVC HELLO request contains the endo id and AP interface id, which will be exposed from the svc device rather than the endo. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-11-25 14:59:08 +00:00
struct gb_svc {
struct device dev;
greybus: core: add bus id to uevents Add the bus id to all greybus uevents. This is needed to identify devices that are being removed (e.g. at hot-unplug). Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-12-03 18:18:02 +00:00
struct gb_host_device *hd;
greybus: svc: register svc device at hello Register the svc device upon reception of the HELLO request. The SVC HELLO request contains the endo id and AP interface id, which will be exposed from the svc device rather than the endo. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-11-25 14:59:08 +00:00
struct gb_connection *connection;
enum gb_svc_state state;
struct ida device_id_map;
greybus: svc: fix racy hotplug handling Fix racy hotplug handling by serialising all processing of hot-plug and unplug requests using a single-threaded dedicated workqueue. This fixes a reported crash during enumeration when processing multiple events. The current svc implementation does not handle concurrency at all (e.g. no interface list lock or refcounting) so we need to use the big hammer for now. Note that we will eventually want to process events for different interfaces in parallel, but that we'd still need a workqueue in order not to starve other svc requests (e.g. for timesync). Reported-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-12-02 17:23:31 +00:00
struct workqueue_struct *wq;
greybus: svc: move endo id and ap interface id to svc Move endo_id and AP interface id to the svc device. The endo abstraction is about to be removed, and these attributes are arguable attributes of the svc anyway. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-11-25 14:59:09 +00:00
u16 endo_id;
u8 ap_intf_id;
greybus: svc: store protocol version Store the "negotiated" protocol version to use in the svc state struct instead of the connection struct. The generic concept of a connection version is going away in favour of bundle-class versions. Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-19 11:51:19 +00:00
u8 protocol_major;
u8 protocol_minor;
greybus: svc: add key event handling Add a new input device associated with the SVC to handle key events. This new events are transfer over a new greybus svc operation which is unidirectional. It was selected the KEY_A for representing the KEY_ARA_BUTTON key code. Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-21 01:42:17 +00:00
greybus: svc: add a "watchdog" to check the network health Now that we have a svc ping command, let's add a watchdog to call it every so often (1 second at the moment.) If it finds something went wrong, post a stern message to the kernel log and call: start unipro_reset to reset the whole greybus hardware subsystem. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-21 06:51:49 +00:00
struct gb_svc_watchdog *watchdog;
greybus: svc_watchdog: Add sysfs file to change the behavior of bite Currently, AP performs unipro_reset if SVC fails to response to its ping. While this error recovery is best suited for the end-user experience, errors in the UniPro network could potentially go unnoticed by the QA and fishfooders in the development phase of the project. This patch adds an option to trigger a kernel panic so logs can be collected for analysis. Testing Done: - Reproduce issue and observe kernel panic when watchdob_control is changed to 'panic' Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-07-26 23:27:28 +00:00
enum gb_svc_watchdog_bite action;
greybus: svc: add AP power measurements debugfs support This change adds the AP Power Monitor functions to read out all the rails power information monitored by the SVC. Testing Done: - $ cat /d/greybus/1-svc/pwrmon/*/* and validate the output with the svc stub power monitor functions - $ tree /d/greybus/1-svc/pwrmon | | | |---pwrmon | | | | |---DUMMY_RAIL_1 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_2 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_3 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now | | | | |---DUMMY_RAIL_4 | | | | | |---current_now | | | | | |---power_now | | | | | |---voltage_now Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-04-20 23:55:08 +00:00
struct dentry *debugfs_dentry;
struct svc_debugfs_pwrmon_rail *pwrmon_rails;
greybus: svc: register svc device at hello Register the svc device upon reception of the HELLO request. The SVC HELLO request contains the endo id and AP interface id, which will be exposed from the svc device rather than the endo. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-11-25 14:59:08 +00:00
};
greybus: core: fix two container-of macros Fix two greybus container-of macros that used the pointer name for the member. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-03-30 20:53:17 +00:00
#define to_gb_svc(d) container_of(d, struct gb_svc, dev)
greybus: introduce SVC protocol This patch adds support for the Greybus SVC protocol. We may want to rearrange protocol numbers at some point, since this is a pretty fundamental protocol. Note: It has only been compile tested; no SVC CPorts have yet been defined, so this code is not yet exercised. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-05-22 18:02:08 +00:00
greybus: svc: create svc along with host device Create svc device along with host-device and move the svc-connection to the svc structure. The svc connection is enabled when registering the host device, but as the SVC protocol is currently driven by the SVC, we need to defer registration of the svc device to the connection request handler. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-12-07 14:05:37 +00:00
struct gb_svc *gb_svc_create(struct gb_host_device *hd);
int gb_svc_add(struct gb_svc *svc);
void gb_svc_del(struct gb_svc *svc);
void gb_svc_put(struct gb_svc *svc);
greybus: svc: add Interface power measurements support This change implements the AP Power Monitor functions for obtaining current/voltage/power on a specific rail of an Interface. Testing Done: $ cat /sys/bus/greybus/devices/1-3/current_now 103 $ cat /sys/bus/greybus/devices/1-3/power_now 303 $ cat /sys/bus/greybus/devices/1-3/voltage_now 203 Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-04-08 03:15:30 +00:00
int gb_svc_pwrmon_intf_sample_get(struct gb_svc *svc, u8 intf_id,
u8 measurement_type, u32 *value);
greybus: interface: move route creation to interface activation Creating and destroying a route to an interface is arguably an interface operation and belongs with the interface code. Add new interface_activate and interface_deactivate helpers that will be used to activate and deactivate an interface in the new interface boot sequence. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-03-29 22:56:04 +00:00
int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id);
int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
u8 intf2_id, u8 dev2_id);
void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id);
greybus: introduce SVC protocol This patch adds support for the Greybus SVC protocol. We may want to rearrange protocol numbers at some point, since this is a pretty fundamental protocol. Note: It has only been compile tested; no SVC CPorts have yet been defined, so this code is not yet exercised. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-05-22 18:02:08 +00:00
int gb_svc_connection_create(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
greybus: connection: generalise CPortFlags handling Generalise the svc connection-create helper to accept a cport-flags argument and handle the flags in the connection code instead. Note that the camera driver currently manages its data connection directly. We keep E2EFC enabled for now even though it will soon need to be disabled due to some pending firmware updates. Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-03-03 12:34:38 +00:00
u8 intf2_id, u16 cport2_id, u8 cport_flags);
greybus: svc: No need to return errors from [gb_]svc_connection_destroy() These routines are responsible to destroy a connection that is going away, the return value is of no use. At best, print an error message to show that we got an error. Make their return type void. Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
2015-08-31 11:51:05 +00:00
void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
u8 intf2_id, u16 cport2_id);
greybus: svc: add interface eject operation Add a new svc operation which will be used to send a request to eject a given interface. Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Reviewed-by: Jeffrey Carlyle <jcarlyle@google.com>
2016-01-11 13:46:31 +00:00
int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id);
greybus: svc: add stub functions for v_sys, refclk and unipro Add stub functions for v_sys, refclk and unipro resource management. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-04-23 16:47:27 +00:00
int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable);
int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable);
int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable);
greybus: svc: add stub interface-activate function Add message structures (based on the current spec) for the SVC Interface Activate operation, and a stub function that always return the Greybus interface type. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-04-23 16:47:28 +00:00
int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type);
greybus: svc: add interface resume operation Add the AP implementation for the Greybus SVC Interface Resume Operation. This operation allows the AP to request the SVC to resume an Interface which was previously SUSPENDED, allowing it to later be ENUMERATED. Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Alex Elder <elder@linaro.org>
2016-07-08 03:07:00 +00:00
int gb_svc_intf_resume(struct gb_svc *svc, u8 intf_id);
greybus: svc: Implement DME peer get/set attributes helpers These are required to get/set DME attributes of the modules. This is implemented based on the greybus specifications. Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-09-09 15:38:29 +00:00
int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
u32 *value);
int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
u32 value);
greybus: svc: Replace link config hack with standard operation The link config operation was a hack only designed to fulfill the camera driver's needs. Now that a standard operation is defined for the same purpose, implement it and remove the hack. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-06 14:16:46 +00:00
int gb_svc_intf_set_power_mode(struct gb_svc *svc, u8 intf_id, u8 hs_series,
u8 tx_mode, u8 tx_gear, u8 tx_nlanes,
greybus: update UniPro Set Interface Power Mode operation to match spec Bring the gb_svc_intf_set_power_mode() up-to-date with the current Greybus specification. This largely involves adding more members to the structure sent across the wire. Also change the camera code to use the new operation properly, with default values passed for the new necessary arguments. The correctness of these default values is confirmed via testing and by asking Rob Johnson. We must make sure to zero the request structure sent across the wire, lest bite us most cruelly, and we fix by changing the Set Power Mode Response structure to use a __u8 rather than a __le16. Testing Done: Took a picture with a camera module, received error code when passing deliberately incorrect values for new parameters, got proper -EIO and Greybus result code printed when operation stopped halfway through. Could induce error by initializing request struct with random nonsense, and can stop it by initializing request struct with zeroes. Associated Firmware Changes: 1669-1671 on Android N Gerrit for SW-2945 Signed-off-by: Eli Sennesh <esennesh@leaflabs.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-06-03 15:24:44 +00:00
u8 tx_amplitude, u8 tx_hs_equalizer,
greybus: svc: Replace link config hack with standard operation The link config operation was a hack only designed to fulfill the camera driver's needs. Now that a standard operation is defined for the same purpose, implement it and remove the hack. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-06 14:16:46 +00:00
u8 rx_mode, u8 rx_gear, u8 rx_nlanes,
greybus: update UniPro Set Interface Power Mode operation to match spec Bring the gb_svc_intf_set_power_mode() up-to-date with the current Greybus specification. This largely involves adding more members to the structure sent across the wire. Also change the camera code to use the new operation properly, with default values passed for the new necessary arguments. The correctness of these default values is confirmed via testing and by asking Rob Johnson. We must make sure to zero the request structure sent across the wire, lest bite us most cruelly, and we fix by changing the Set Power Mode Response structure to use a __u8 rather than a __le16. Testing Done: Took a picture with a camera module, received error code when passing deliberately incorrect values for new parameters, got proper -EIO and Greybus result code printed when operation stopped halfway through. Could induce error by initializing request struct with random nonsense, and can stop it by initializing request struct with zeroes. Associated Firmware Changes: 1669-1671 on Android N Gerrit for SW-2945 Signed-off-by: Eli Sennesh <esennesh@leaflabs.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-06-03 15:24:44 +00:00
u8 flags, u32 quirks,
struct gb_svc_l2_timer_cfg *local,
struct gb_svc_l2_timer_cfg *remote);
greybus: svc: add power mode call for link hibernation Due to when using set_power_mode to hibernate a link, it won't trigger a POWERMODEIND event, hence the hard-coded GB_SVC_SETPWRM_PWR_OK would be returned and it should also be considered as successful result code for link hibernation. Therefore, adding this set_power_mode_hibernate function to separate the two calls in order to check with the correct result code. Testing Done: - Suspend an Interface and observe no set power mode error. Signed-off-by: David Lin <dtwlin@google.com> Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Alex Elder <elder@linaro.org>
2016-07-08 03:07:00 +00:00
int gb_svc_intf_set_power_mode_hibernate(struct gb_svc *svc, u8 intf_id);
greybus: svc: add ping command This implements the SVC "ping" command. It's tiny and simple, but we need something like this in order for us to "know" if all is working well. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-20 07:30:42 +00:00
int gb_svc_ping(struct gb_svc *svc);
greybus: svc: add a "watchdog" to check the network health Now that we have a svc ping command, let's add a watchdog to call it every so often (1 second at the moment.) If it finds something went wrong, post a stern message to the kernel log and call: start unipro_reset to reset the whole greybus hardware subsystem. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-21 06:51:49 +00:00
int gb_svc_watchdog_create(struct gb_svc *svc);
void gb_svc_watchdog_destroy(struct gb_svc *svc);
greybus: svc watchdog: allow it to be enabled/disabled from userspace Sometimes you want to disable the SVC watchdog without having to patch your kernel, so provide a sysfs file to do this. This can let us do power measurements, and let the firmware developers not go crazy worrying that the kernel is going to reset their chips with no notice. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2016-01-26 23:17:08 +00:00
bool gb_svc_watchdog_enabled(struct gb_svc *svc);
int gb_svc_watchdog_enable(struct gb_svc *svc);
int gb_svc_watchdog_disable(struct gb_svc *svc);
greybus: introduce SVC protocol This patch adds support for the Greybus SVC protocol. We may want to rearrange protocol numbers at some point, since this is a pretty fundamental protocol. Note: It has only been compile tested; no SVC CPorts have yet been defined, so this code is not yet exercised. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2015-05-22 18:02:08 +00:00
#endif /* __SVC_H */
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