i2c-voodoo3: Delete
Superseded by tdfxfb. I2C/DDC support used to live in a separate driver but this caused driver conflicts. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
This commit is contained in:
Jean Delvare
parent
bc6286e50b
commit
a0c11cdd6a
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@ -419,15 +419,6 @@ Who: Alex Chiang <achiang@hp.com>
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---------------------------
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What: i2c-voodoo3 driver
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When: October 2009
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Why: Superseded by tdfxfb. I2C/DDC support used to live in a separate
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driver but this caused driver conflicts.
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Who: Jean Delvare <khali@linux-fr.org>
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Krzysztof Helt <krzysztof.h1@wp.pl>
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---------------------------
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What: CONFIG_RFKILL_INPUT
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When: 2.6.33
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Why: Should be implemented in userspace, policy daemon.
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@ -1,62 +0,0 @@
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Kernel driver i2c-voodoo3
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Supported adapters:
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* 3dfx Voodoo3 based cards
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* Voodoo Banshee based cards
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Authors:
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Frodo Looijaard <frodol@dds.nl>,
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Philip Edelbrock <phil@netroedge.com>,
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Ralph Metzler <rjkm@thp.uni-koeln.de>,
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Mark D. Studebaker <mdsxyz123@yahoo.com>
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Main contact: Philip Edelbrock <phil@netroedge.com>
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The code is based upon Ralph's test code (he did the hard stuff ;')
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Description
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-----------
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The 3dfx Voodoo3 chip contains two I2C interfaces (aka a I2C 'master' or
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'host').
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The first interface is used for DDC (Data Display Channel) which is a
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serial channel through the VGA monitor connector to a DDC-compliant
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monitor. This interface is defined by the Video Electronics Standards
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Association (VESA). The standards are available for purchase at
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http://www.vesa.org .
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The second interface is a general-purpose I2C bus. The intent by 3dfx was
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to allow manufacturers to add extra chips to the video card such as a
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TV-out chip such as the BT869 or possibly even I2C based temperature
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sensors like the ADM1021 or LM75.
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Stability
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---------
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Seems to be stable on the test machine, but needs more testing on other
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machines. Simultaneous accesses of the DDC and I2C busses may cause errors.
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Supported Devices
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-----------------
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Specifically, this driver was written and tested on the '3dfx Voodoo3 AGP
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3000' which has a tv-out feature (s-video or composite). According to the
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docs and discussions, this code should work for any Voodoo3 based cards as
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well as Voodoo Banshee based cards. The DDC interface has been tested on a
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Voodoo Banshee card.
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Issues
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------
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Probably many, but it seems to work OK on my system. :')
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External Device Connection
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--------------------------
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The digital video input jumpers give availability to the I2C bus.
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Specifically, pins 13 and 25 (bottom row middle, and bottom right-end) are
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the I2C clock and I2C data lines, respectively. +5V and GND are probably
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also easily available making the addition of extra I2C/SMBus devices easy
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to implement.
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@ -640,22 +640,6 @@ config I2C_TINY_USB
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This driver can also be built as a module. If so, the module
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will be called i2c-tiny-usb.
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comment "Graphics adapter I2C/DDC channel drivers"
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depends on PCI
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config I2C_VOODOO3
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tristate "Voodoo 3 (DEPRECATED)"
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depends on PCI
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select I2C_ALGOBIT
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help
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If you say yes to this option, support will be included for the
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Voodoo 3 I2C interface. This driver is deprecated and you should
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use the tdfxfb driver instead, which additionally provides
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framebuffer support.
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This driver can also be built as a module. If so, the module
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will be called i2c-voodoo3.
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comment "Other I2C/SMBus bus drivers"
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config I2C_ACORN
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@ -61,9 +61,6 @@ obj-$(CONFIG_I2C_PARPORT_LIGHT) += i2c-parport-light.o
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obj-$(CONFIG_I2C_TAOS_EVM) += i2c-taos-evm.o
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obj-$(CONFIG_I2C_TINY_USB) += i2c-tiny-usb.o
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# Graphics adapter I2C/DDC channel drivers
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obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
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# Other I2C/SMBus bus drivers
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obj-$(CONFIG_I2C_ACORN) += i2c-acorn.o
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obj-$(CONFIG_I2C_ELEKTOR) += i2c-elektor.o
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@ -1,248 +0,0 @@
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/*
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Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
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Philip Edelbrock <phil@netroedge.com>,
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Ralph Metzler <rjkm@thp.uni-koeln.de>, and
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Mark D. Studebaker <mdsxyz123@yahoo.com>
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Based on code written by Ralph Metzler <rjkm@thp.uni-koeln.de> and
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Simon Vogl
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* This interfaces to the I2C bus of the Voodoo3 to gain access to
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the BT869 and possibly other I2C devices. */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <asm/io.h>
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/* the only registers we use */
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#define REG 0x78
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#define REG2 0x70
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/* bit locations in the register */
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#define DDC_ENAB 0x00040000
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#define DDC_SCL_OUT 0x00080000
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#define DDC_SDA_OUT 0x00100000
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#define DDC_SCL_IN 0x00200000
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#define DDC_SDA_IN 0x00400000
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#define I2C_ENAB 0x00800000
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#define I2C_SCL_OUT 0x01000000
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#define I2C_SDA_OUT 0x02000000
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#define I2C_SCL_IN 0x04000000
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#define I2C_SDA_IN 0x08000000
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/* initialization states */
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#define INIT2 0x2
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#define INIT3 0x4
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/* delays */
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#define CYCLE_DELAY 10
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#define TIMEOUT (HZ / 2)
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static void __iomem *ioaddr;
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/* The voo GPIO registers don't have individual masks for each bit
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so we always have to read before writing. */
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static void bit_vooi2c_setscl(void *data, int val)
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{
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unsigned int r;
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r = readl(ioaddr + REG);
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if (val)
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r |= I2C_SCL_OUT;
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else
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r &= ~I2C_SCL_OUT;
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writel(r, ioaddr + REG);
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readl(ioaddr + REG); /* flush posted write */
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}
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static void bit_vooi2c_setsda(void *data, int val)
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{
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unsigned int r;
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r = readl(ioaddr + REG);
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if (val)
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r |= I2C_SDA_OUT;
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else
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r &= ~I2C_SDA_OUT;
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writel(r, ioaddr + REG);
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readl(ioaddr + REG); /* flush posted write */
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}
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/* The GPIO pins are open drain, so the pins always remain outputs.
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We rely on the i2c-algo-bit routines to set the pins high before
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reading the input from other chips. */
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static int bit_vooi2c_getscl(void *data)
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{
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return (0 != (readl(ioaddr + REG) & I2C_SCL_IN));
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}
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static int bit_vooi2c_getsda(void *data)
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{
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return (0 != (readl(ioaddr + REG) & I2C_SDA_IN));
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}
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static void bit_vooddc_setscl(void *data, int val)
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{
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unsigned int r;
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r = readl(ioaddr + REG);
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if (val)
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r |= DDC_SCL_OUT;
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else
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r &= ~DDC_SCL_OUT;
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writel(r, ioaddr + REG);
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readl(ioaddr + REG); /* flush posted write */
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}
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static void bit_vooddc_setsda(void *data, int val)
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{
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unsigned int r;
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r = readl(ioaddr + REG);
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if (val)
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r |= DDC_SDA_OUT;
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else
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r &= ~DDC_SDA_OUT;
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writel(r, ioaddr + REG);
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readl(ioaddr + REG); /* flush posted write */
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}
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static int bit_vooddc_getscl(void *data)
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{
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return (0 != (readl(ioaddr + REG) & DDC_SCL_IN));
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}
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static int bit_vooddc_getsda(void *data)
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{
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return (0 != (readl(ioaddr + REG) & DDC_SDA_IN));
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}
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static int config_v3(struct pci_dev *dev)
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{
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unsigned long cadr;
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/* map Voodoo3 memory */
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cadr = dev->resource[0].start;
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cadr &= PCI_BASE_ADDRESS_MEM_MASK;
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ioaddr = ioremap_nocache(cadr, 0x1000);
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if (ioaddr) {
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writel(0x8160, ioaddr + REG2);
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writel(0xcffc0020, ioaddr + REG);
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dev_info(&dev->dev, "Using Banshee/Voodoo3 I2C device at %p\n", ioaddr);
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return 0;
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}
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return -ENODEV;
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}
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static struct i2c_algo_bit_data voo_i2c_bit_data = {
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.setsda = bit_vooi2c_setsda,
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.setscl = bit_vooi2c_setscl,
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.getsda = bit_vooi2c_getsda,
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.getscl = bit_vooi2c_getscl,
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.udelay = CYCLE_DELAY,
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.timeout = TIMEOUT
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};
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static struct i2c_adapter voodoo3_i2c_adapter = {
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.owner = THIS_MODULE,
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.name = "I2C Voodoo3/Banshee adapter",
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.algo_data = &voo_i2c_bit_data,
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};
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static struct i2c_algo_bit_data voo_ddc_bit_data = {
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.setsda = bit_vooddc_setsda,
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.setscl = bit_vooddc_setscl,
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.getsda = bit_vooddc_getsda,
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.getscl = bit_vooddc_getscl,
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.udelay = CYCLE_DELAY,
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.timeout = TIMEOUT
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};
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static struct i2c_adapter voodoo3_ddc_adapter = {
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.owner = THIS_MODULE,
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.class = I2C_CLASS_DDC,
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.name = "DDC Voodoo3/Banshee adapter",
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.algo_data = &voo_ddc_bit_data,
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};
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static struct pci_device_id voodoo3_ids[] __devinitdata = {
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{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3) },
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{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE) },
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{ 0, }
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};
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MODULE_DEVICE_TABLE (pci, voodoo3_ids);
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static int __devinit voodoo3_probe(struct pci_dev *dev, const struct pci_device_id *id)
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{
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int retval;
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retval = config_v3(dev);
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if (retval)
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return retval;
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/* set up the sysfs linkage to our parent device */
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voodoo3_i2c_adapter.dev.parent = &dev->dev;
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voodoo3_ddc_adapter.dev.parent = &dev->dev;
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retval = i2c_bit_add_bus(&voodoo3_i2c_adapter);
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if (retval)
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return retval;
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retval = i2c_bit_add_bus(&voodoo3_ddc_adapter);
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if (retval)
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i2c_del_adapter(&voodoo3_i2c_adapter);
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return retval;
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}
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static void __devexit voodoo3_remove(struct pci_dev *dev)
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{
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i2c_del_adapter(&voodoo3_i2c_adapter);
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i2c_del_adapter(&voodoo3_ddc_adapter);
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iounmap(ioaddr);
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}
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static struct pci_driver voodoo3_driver = {
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.name = "voodoo3_smbus",
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.id_table = voodoo3_ids,
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.probe = voodoo3_probe,
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.remove = __devexit_p(voodoo3_remove),
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};
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static int __init i2c_voodoo3_init(void)
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{
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return pci_register_driver(&voodoo3_driver);
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}
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static void __exit i2c_voodoo3_exit(void)
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{
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pci_unregister_driver(&voodoo3_driver);
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}
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MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
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"Philip Edelbrock <phil@netroedge.com>, "
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"Ralph Metzler <rjkm@thp.uni-koeln.de>, "
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"and Mark D. Studebaker <mdsxyz123@yahoo.com>");
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MODULE_DESCRIPTION("Voodoo3 I2C/SMBus driver");
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MODULE_LICENSE("GPL");
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module_init(i2c_voodoo3_init);
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module_exit(i2c_voodoo3_exit);
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