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Message-ID: <12573794921968@xenotime.net> Date: Wed, 04 Nov 2009 16:04:52 -0800 From: Randy Dunlap <rdunlap@...otime.net> To: linux-kernel@...r.kernel.org Cc: Jean Delvare <khali@...ux-fr.org> Subject: [PATCH 8/8] docs: use misc-devices/ dir for drivers From: Jean Delvare <khali@...ux-fr.org> Subject: Doc: use misc-devices/ dir for drivers We have a directory for misc drivers documentation, let's use it. Signed-off-by: Jean Delvare <khali@...ux-fr.org> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com> Cc: "Darrick J. Wong" <djwong@...ibm.com> Cc: Rodolfo Giometti <giometti@...ux.it> --- Resending with proper name quoting, sorry for the noise. Documentation/c2port.txt | 90 ------------------------ Documentation/ics932s401 | 31 -------- Documentation/misc-devices/c2port.txt | 90 ++++++++++++++++++++++++ Documentation/misc-devices/ics932s401 | 31 ++++++++ 4 files changed, 121 insertions(+), 121 deletions(-) --- lnx-2632-rc6.orig/Documentation/c2port.txt +++ /dev/null @@ -1,90 +0,0 @@ - C2 port support - --------------- - -(C) Copyright 2007 Rodolfo Giometti <giometti@...eenne.com> - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - - - -Overview --------- - -This driver implements the support for Linux of Silicon Labs (Silabs) -C2 Interface used for in-system programming of micro controllers. - -By using this driver you can reprogram the in-system flash without EC2 -or EC3 debug adapter. This solution is also useful in those systems -where the micro controller is connected via special GPIOs pins. - -References ----------- - -The C2 Interface main references are at (http://www.silabs.com) -Silicon Laboratories site], see: - -- AN127: FLASH Programming via the C2 Interface at -http://www.silabs.com/public/documents/tpub_doc/anote/Microcontrollers/Small_Form_Factor/en/an127.pdf, and - -- C2 Specification at -http://www.silabs.com/public/documents/tpub_doc/spec/Microcontrollers/en/C2spec.pdf, - -however it implements a two wire serial communication protocol (bit -banging) designed to enable in-system programming, debugging, and -boundary-scan testing on low pin-count Silicon Labs devices. Currently -this code supports only flash programming but extensions are easy to -add. - -Using the driver ----------------- - -Once the driver is loaded you can use sysfs support to get C2port's -info or read/write in-system flash. - -# ls /sys/class/c2port/c2port0/ -access flash_block_size flash_erase rev_id -dev_id flash_blocks_num flash_size subsystem/ -flash_access flash_data reset uevent - -Initially the C2port access is disabled since you hardware may have -such lines multiplexed with other devices so, to get access to the -C2port, you need the command: - -# echo 1 > /sys/class/c2port/c2port0/access - -after that you should read the device ID and revision ID of the -connected micro controller: - -# cat /sys/class/c2port/c2port0/dev_id -8 -# cat /sys/class/c2port/c2port0/rev_id -1 - -However, for security reasons, the in-system flash access in not -enabled yet, to do so you need the command: - -# echo 1 > /sys/class/c2port/c2port0/flash_access - -After that you can read the whole flash: - -# cat /sys/class/c2port/c2port0/flash_data > image - -erase it: - -# echo 1 > /sys/class/c2port/c2port0/flash_erase - -and write it: - -# cat image > /sys/class/c2port/c2port0/flash_data - -after writing you have to reset the device to execute the new code: - -# echo 1 > /sys/class/c2port/c2port0/reset --- lnx-2632-rc6.orig/Documentation/ics932s401 +++ /dev/null @@ -1,31 +0,0 @@ -Kernel driver ics932s401 -====================== - -Supported chips: - * IDT ICS932S401 - Prefix: 'ics932s401' - Addresses scanned: I2C 0x69 - Datasheet: Publically available at the IDT website - -Author: Darrick J. Wong - -Description ------------ - -This driver implements support for the IDT ICS932S401 chip family. - -This chip has 4 clock outputs--a base clock for the CPU (which is likely -multiplied to get the real CPU clock), a system clock, a PCI clock, a USB -clock, and a reference clock. The driver reports selected and actual -frequency. If spread spectrum mode is enabled, the driver also reports by what -percent the clock signal is being spread, which should be between 0 and -0.5%. -All frequencies are reported in KHz. - -The ICS932S401 monitors all inputs continuously. The driver will not read -the registers more often than once every other second. - -Special Features ----------------- - -The clocks could be reprogrammed to increase system speed. I will not help you -do this, as you risk damaging your system! --- /dev/null +++ lnx-2632-rc6/Documentation/misc-devices/c2port.txt @@ -0,0 +1,90 @@ + C2 port support + --------------- + +(C) Copyright 2007 Rodolfo Giometti <giometti@...eenne.com> + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + + + +Overview +-------- + +This driver implements the support for Linux of Silicon Labs (Silabs) +C2 Interface used for in-system programming of micro controllers. + +By using this driver you can reprogram the in-system flash without EC2 +or EC3 debug adapter. This solution is also useful in those systems +where the micro controller is connected via special GPIOs pins. + +References +---------- + +The C2 Interface main references are at (http://www.silabs.com) +Silicon Laboratories site], see: + +- AN127: FLASH Programming via the C2 Interface at +http://www.silabs.com/public/documents/tpub_doc/anote/Microcontrollers/Small_Form_Factor/en/an127.pdf, and + +- C2 Specification at +http://www.silabs.com/public/documents/tpub_doc/spec/Microcontrollers/en/C2spec.pdf, + +however it implements a two wire serial communication protocol (bit +banging) designed to enable in-system programming, debugging, and +boundary-scan testing on low pin-count Silicon Labs devices. Currently +this code supports only flash programming but extensions are easy to +add. + +Using the driver +---------------- + +Once the driver is loaded you can use sysfs support to get C2port's +info or read/write in-system flash. + +# ls /sys/class/c2port/c2port0/ +access flash_block_size flash_erase rev_id +dev_id flash_blocks_num flash_size subsystem/ +flash_access flash_data reset uevent + +Initially the C2port access is disabled since you hardware may have +such lines multiplexed with other devices so, to get access to the +C2port, you need the command: + +# echo 1 > /sys/class/c2port/c2port0/access + +after that you should read the device ID and revision ID of the +connected micro controller: + +# cat /sys/class/c2port/c2port0/dev_id +8 +# cat /sys/class/c2port/c2port0/rev_id +1 + +However, for security reasons, the in-system flash access in not +enabled yet, to do so you need the command: + +# echo 1 > /sys/class/c2port/c2port0/flash_access + +After that you can read the whole flash: + +# cat /sys/class/c2port/c2port0/flash_data > image + +erase it: + +# echo 1 > /sys/class/c2port/c2port0/flash_erase + +and write it: + +# cat image > /sys/class/c2port/c2port0/flash_data + +after writing you have to reset the device to execute the new code: + +# echo 1 > /sys/class/c2port/c2port0/reset --- /dev/null +++ lnx-2632-rc6/Documentation/misc-devices/ics932s401 @@ -0,0 +1,31 @@ +Kernel driver ics932s401 +====================== + +Supported chips: + * IDT ICS932S401 + Prefix: 'ics932s401' + Addresses scanned: I2C 0x69 + Datasheet: Publically available at the IDT website + +Author: Darrick J. Wong + +Description +----------- + +This driver implements support for the IDT ICS932S401 chip family. + +This chip has 4 clock outputs--a base clock for the CPU (which is likely +multiplied to get the real CPU clock), a system clock, a PCI clock, a USB +clock, and a reference clock. The driver reports selected and actual +frequency. If spread spectrum mode is enabled, the driver also reports by what +percent the clock signal is being spread, which should be between 0 and -0.5%. +All frequencies are reported in KHz. + +The ICS932S401 monitors all inputs continuously. The driver will not read +the registers more often than once every other second. + +Special Features +---------------- + +The clocks could be reprogrammed to increase system speed. I will not help you +do this, as you risk damaging your system! -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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