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Devin Heitmueller
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Mauro Carvalho Chehab
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May 19, 2010
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| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 0abf26291d95b09eda44453a0c0655a54b8d90f7 | ||
| refs/heads/master: cb1c0f8e7099ef5ba20c046df3a3790b5683c573 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| /* | ||
| * ngene-i2c.c: nGene PCIe bridge driver i2c functions | ||
| * | ||
| * Copyright (C) 2005-2007 Micronas | ||
| * | ||
| * Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de> | ||
| * Modifications for new nGene firmware, | ||
| * support for EEPROM-copying, | ||
| * support for new dual DVB-S2 card prototype | ||
| * | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License | ||
| * version 2 only, as published by the Free Software Foundation. | ||
| * | ||
| * | ||
| * 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. | ||
| * | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
| * 02110-1301, USA | ||
| * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | ||
| */ | ||
|
|
||
| /* FIXME - some of these can probably be removed */ | ||
| #include <linux/module.h> | ||
| #include <linux/init.h> | ||
| #include <linux/delay.h> | ||
| #include <linux/slab.h> | ||
| #include <linux/poll.h> | ||
| #include <linux/io.h> | ||
| #include <asm/div64.h> | ||
| #include <linux/pci.h> | ||
| #include <linux/pci_ids.h> | ||
| #include <linux/smp_lock.h> | ||
| #include <linux/timer.h> | ||
| #include <linux/version.h> | ||
| #include <linux/byteorder/generic.h> | ||
| #include <linux/firmware.h> | ||
| #include <linux/vmalloc.h> | ||
|
|
||
| #include "ngene.h" | ||
|
|
||
| /* Firmware command for i2c operations */ | ||
| static int ngene_command_i2c_read(struct ngene *dev, u8 adr, | ||
| u8 *out, u8 outlen, u8 *in, u8 inlen, int flag) | ||
| { | ||
| struct ngene_command com; | ||
|
|
||
| com.cmd.hdr.Opcode = CMD_I2C_READ; | ||
| com.cmd.hdr.Length = outlen + 3; | ||
| com.cmd.I2CRead.Device = adr << 1; | ||
| memcpy(com.cmd.I2CRead.Data, out, outlen); | ||
| com.cmd.I2CRead.Data[outlen] = inlen; | ||
| com.cmd.I2CRead.Data[outlen + 1] = 0; | ||
| com.in_len = outlen + 3; | ||
| com.out_len = inlen + 1; | ||
|
|
||
| if (ngene_command(dev, &com) < 0) | ||
| return -EIO; | ||
|
|
||
| if ((com.cmd.raw8[0] >> 1) != adr) | ||
| return -EIO; | ||
|
|
||
| if (flag) | ||
| memcpy(in, com.cmd.raw8, inlen + 1); | ||
| else | ||
| memcpy(in, com.cmd.raw8 + 1, inlen); | ||
| return 0; | ||
| } | ||
|
|
||
| static int ngene_command_i2c_write(struct ngene *dev, u8 adr, | ||
| u8 *out, u8 outlen) | ||
| { | ||
| struct ngene_command com; | ||
|
|
||
|
|
||
| com.cmd.hdr.Opcode = CMD_I2C_WRITE; | ||
| com.cmd.hdr.Length = outlen + 1; | ||
| com.cmd.I2CRead.Device = adr << 1; | ||
| memcpy(com.cmd.I2CRead.Data, out, outlen); | ||
| com.in_len = outlen + 1; | ||
| com.out_len = 1; | ||
|
|
||
| if (ngene_command(dev, &com) < 0) | ||
| return -EIO; | ||
|
|
||
| if (com.cmd.raw8[0] == 1) | ||
| return -EIO; | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| static void ngene_i2c_set_bus(struct ngene *dev, int bus) | ||
| { | ||
| if (!(dev->card_info->i2c_access & 2)) | ||
| return; | ||
| if (dev->i2c_current_bus == bus) | ||
| return; | ||
|
|
||
| switch (bus) { | ||
| case 0: | ||
| ngene_command_gpio_set(dev, 3, 0); | ||
| ngene_command_gpio_set(dev, 2, 1); | ||
| break; | ||
|
|
||
| case 1: | ||
| ngene_command_gpio_set(dev, 2, 0); | ||
| ngene_command_gpio_set(dev, 3, 1); | ||
| break; | ||
| } | ||
| dev->i2c_current_bus = bus; | ||
| } | ||
|
|
||
| static int ngene_i2c_master_xfer(struct i2c_adapter *adapter, | ||
| struct i2c_msg msg[], int num) | ||
| { | ||
| struct ngene_channel *chan = | ||
| (struct ngene_channel *)i2c_get_adapdata(adapter); | ||
| struct ngene *dev = chan->dev; | ||
|
|
||
| down(&dev->i2c_switch_mutex); | ||
| ngene_i2c_set_bus(dev, chan->number); | ||
|
|
||
| if (num == 2 && msg[1].flags & I2C_M_RD && !(msg[0].flags & I2C_M_RD)) | ||
| if (!ngene_command_i2c_read(dev, msg[0].addr, | ||
| msg[0].buf, msg[0].len, | ||
| msg[1].buf, msg[1].len, 0)) | ||
| goto done; | ||
|
|
||
| if (num == 1 && !(msg[0].flags & I2C_M_RD)) | ||
| if (!ngene_command_i2c_write(dev, msg[0].addr, | ||
| msg[0].buf, msg[0].len)) | ||
| goto done; | ||
| if (num == 1 && (msg[0].flags & I2C_M_RD)) | ||
| if (!ngene_command_i2c_read(dev, msg[0].addr, NULL, 0, | ||
| msg[0].buf, msg[0].len, 0)) | ||
| goto done; | ||
|
|
||
| up(&dev->i2c_switch_mutex); | ||
| return -EIO; | ||
|
|
||
| done: | ||
| up(&dev->i2c_switch_mutex); | ||
| return num; | ||
| } | ||
|
|
||
|
|
||
| static u32 ngene_i2c_functionality(struct i2c_adapter *adap) | ||
| { | ||
| return I2C_FUNC_SMBUS_EMUL; | ||
| } | ||
|
|
||
| static struct i2c_algorithm ngene_i2c_algo = { | ||
| .master_xfer = ngene_i2c_master_xfer, | ||
| .functionality = ngene_i2c_functionality, | ||
| }; | ||
|
|
||
| int ngene_i2c_init(struct ngene *dev, int dev_nr) | ||
| { | ||
| struct i2c_adapter *adap = &(dev->channel[dev_nr].i2c_adapter); | ||
|
|
||
| i2c_set_adapdata(adap, &(dev->channel[dev_nr])); | ||
| adap->class = I2C_CLASS_TV_DIGITAL | I2C_CLASS_TV_ANALOG; | ||
|
|
||
| strcpy(adap->name, "nGene"); | ||
|
|
||
| adap->algo = &ngene_i2c_algo; | ||
| adap->algo_data = (void *)&(dev->channel[dev_nr]); | ||
| adap->dev.parent = &dev->pci_dev->dev; | ||
|
|
||
| return i2c_add_adapter(adap); | ||
| } | ||
|
|
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