Date: Fri, 26 Oct 2007 18:27:25 +0300 From: Achilleas Mantzios <achill@matrix.gatewaynet.com> To: Mark Tinguely <tinguely@casselton.net> Cc: freebsd-multimedia@freebsd.org Subject: Re: bktr and GPIO Message-ID: <200710261827.25933.achill@matrix.gatewaynet.com> In-Reply-To: <200710261359.l9QDxFZh088302@casselton.net> References: <200710261359.l9QDxFZh088302@casselton.net>
next in thread | previous in thread | raw e-mail | index | archive | help
=CE=A3=CF=84=CE=B9=CF=82 =CE=A0=CE=B1=CF=81=CE=B1=CF=83=CE=BA=CE=B5=CF=85= =CE=AE 26 =CE=9F=CE=BA=CF=84=CF=8E=CE=B2=CF=81=CE=B9=CE=BF=CF=82 2007 16:59= , =CE=BF/=CE=B7 Mark Tinguely =CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5: > (deleted information. He is interested in getting the Zoneminder bktr(8) > based relays to work). > > > I have some contact with the person who manufactures the cards and > > writes the linux drivers, and he asked me if FreeBSD has access to bt878 > > GPIO, and said that it would be easy if so. > > You will need to know what values need to be writen to which register to > enable the particular relay. In the kernel driver source program, add > a new ioctl() so that you can enable this feature from the user program. According to Vassili Leonov of LML, =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D In relation to bits assignments on LMLBT4M and LMLBT44 cards: /* to allow access to GPIO bits for sensors input and alarms output GPIObit | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | assignment | TI | O3|INx| O2| O1|IN4|IN3|IN2|IN1| | | IN - sensor inputs, INx - sensor inputs and TI XORed together O1,O2,O3 - alarm outputs (relays) GPIO bits should be enabled for outpus as follows: OUT ENABLE 1 1 0 . 1 1 0 0 . 0 0 0 0 =3D 0x6C0 */ So the words are 11 bits long. > > The command inside the new ioctl() will probably look roughly like: > > #ifdef OPTIONAL_READ_OLD > /* optionally may need to preserve some other settings */ > set =3D (IN#(bktr, BKTR_GPIO_@@@@) & ~mask) | set; > #endif > OUT#(bktr, BKTR_GPIO_@@@@, set); /* turn on relay "value" */ > > where > mask optional turn off bits > set enable bits > # is the size (B)yte, (W)ord, (L)ong > @@@@ is the register location (you probably will have to add a > define for this location into the header file). Is=20 #define BKTR_GPIO_DMA_CTL 0x10C #define BKTR_GPIO_OUT_EN 0x118 #define BKTR_GPIO_REG_INP 0x11C #define BKTR_GPIO_DATA 0x200 in /usr/src/sys/dev/bktr/bktr_reg.h any relevant to the above? What to they represent? Why i was able to call ioctl BT848_GPIO_* on /dev/tuner0 but=20 not /dev/bktr0? A little enlightment would be great! > > --Mark Tinguely =2D-=20 Achilleas Mantzios
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200710261827.25933.achill>