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path: root/drivers/staging/mei/interface.c (follow)
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2012-05-01Staging: mei: move the mei code out of stagingGreg Kroah-Hartman1-428/+0
It's been cleaned up, and there's nothing else left to do, so move it out of staging into drivers/misc/ where all can use it now. Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Oren Weil <oren.jer.weil@intel.com> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-14staging/mei: propagate error codes up in the write flowTomas Winkler1-24/+15
Change mei_write_message's return type from bool to int to enable propagation of the error code up to caller functions. The function now returns -EIO when low level write fails and 0 on success. A similar change is done in intermediate caller functions: mei_send_flow_control, mei_connect, and mei_disconnect This makes code more alike to typical Linux kernel error handling. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-13drivers:staging:mei Fix some typos in staging/meiJustin P. Mattock1-1/+1
The below patch fixes some typos in drivers/staging/mei/* that I have found while doing a little bit of reading. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-29staging: mei: kill struct hbm_cmd bit fieldsTomas Winkler1-3/+3
Replace bitfield struct hbm_cmd with simple u8 as we always access the value as whole. This allows us to remove few ugly type casts For possible further uses and documentation purposes we add corresponding bitmask defines Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09staging/mei: normalize prototypes of all read buffersTomas Winkler1-16/+7
1. convert all read buffers to unsigned char and drop useless castings 2. simplify mei_read_slots implementation Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09staging/mei: update copyright year to 2012Tomas Winkler1-1/+1
1. Update Copyright to 2012 2. Also fix mei.h copyright format checkpaatch complained: WARNING: please, no spaces at the start of a line Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2011-12-13staging/mei: code style - cleanup blanksTomas Winkler1-4/+4
1. Remove redundant blanks 2. Straighten code lines that don't go over 80 characters Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16drivers/staging/mei/interface.c: take size of pointed value, not pointerJulia Lawall1-2/+2
Sizeof a pointer-typed expression returns the size of the pointer, not that of the pointed data. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression *e; type T; identifier f; @@ f(...,(T)e,..., -sizeof(e) +sizeof(*e) ,...) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-28staging: mei: rename num_mei_me_clients to me_clients_numTomas Winkler1-4/+4
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Oren Weil <oren.jer.weil@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-28staging: mei: mei_dev - kill unused membersTomas Winkler1-1/+0
remove write only/unsed variables mei_dev.write_hang and mei_io_lis.tdevice_extension Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Oren Weil <oren.jer.weil@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-18staging/mei: MEI link layerOren Weil1-0/+447
Implementation of the communication between host and ME. connect/disconnect to/from a client, send MEI message, read MEI message, flow control handling. Each MEI message has mei_msg_hdr followed by a payload. Driver is oblivious the payload. ME Address/ID - This is the logical address of the ME feature/client of that message. Host Address/ID - This is the logical address of the Host client of that message Length - This is the Length of message payload in bytes Reserved - reserved for future use. Message Complete - This bit is used to indicative that this is the last message of multi message MEI transfer of a client message that is larger then the MEI circular buffer. Payload - Message payload (data) up to 512bytes The HW data registers are consist two circular buffers, one for data from ME and other data from Host application. Each buffer has two pointers, read_ptr (H_CBRP) and write_ptr (H_CBWP). The buffers size is defined by depth value that exists in the status registers (H_CBD and ME_CBD_HRA). Every read from ME circular buffer cause read_ptr++ Every write to the Host circular buffer write_ptr++ Flow control MEI message that ME and MEI Driver use to notify each other that a ME feature/client or Host client buffer is ready to receive data. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Itzhak Tzeel-Krupp <itzhak.tzeel-krupp@intel.com> Signed-off-by: Oren Weil <oren.jer.weil@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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