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Diffstat (limited to 'drivers/media/dvb/mantis/mantis_i2c.c')
-rw-r--r--drivers/media/dvb/mantis/mantis_i2c.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/drivers/media/dvb/mantis/mantis_i2c.c b/drivers/media/dvb/mantis/mantis_i2c.c
deleted file mode 100644
index e7794517fe2..00000000000
--- a/drivers/media/dvb/mantis/mantis_i2c.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- Mantis PCI bridge driver
-
- Copyright (C) Manu Abraham (abraham.manu@gmail.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.
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include <asm/io.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/i2c.h>
-
-#include "dmxdev.h"
-#include "dvbdev.h"
-#include "dvb_demux.h"
-#include "dvb_frontend.h"
-#include "dvb_net.h"
-
-#include "mantis_common.h"
-#include "mantis_reg.h"
-#include "mantis_i2c.h"
-
-#define TRIALS 10000
-
-static int mantis_i2c_read(struct mantis_pci *mantis, const struct i2c_msg *msg)
-{
- u32 rxd, i, stat, trials;
-
- dprintk(MANTIS_INFO, 0, " %s: Address=[0x%02x] <R>[ ",
- __func__, msg->addr);
-
- for (i = 0; i < msg->len; i++) {
- rxd = (msg->addr << 25) | (1 << 24)
- | MANTIS_I2C_RATE_3
- | MANTIS_I2C_STOP
- | MANTIS_I2C_PGMODE;
-
- if (i == (msg->len - 1))
- rxd &= ~MANTIS_I2C_STOP;
-
- mmwrite(MANTIS_INT_I2CDONE, MANTIS_INT_STAT);
- mmwrite(rxd, MANTIS_I2CDATA_CTL);
-
- /* wait for xfer completion */
- for (trials = 0; trials < TRIALS; trials++) {
- stat = mmread(MANTIS_INT_STAT);
- if (stat & MANTIS_INT_I2CDONE)
- break;
- }
-
- dprintk(MANTIS_TMG, 0, "I2CDONE: trials=%d\n", trials);
-
- /* wait for xfer completion */
- for (trials = 0; trials < TRIALS; trials++) {
- stat = mmread(MANTIS_INT_STAT);
- if (stat & MANTIS_INT_I2CRACK)
- break;
- }
-
- dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials);
-
- rxd = mmread(MANTIS_I2CDATA_CTL);
- msg->buf[i] = (u8)((rxd >> 8) & 0xFF);
- dprintk(MANTIS_INFO, 0, "%02x ", msg->buf[i]);
- }
- dprintk(MANTIS_INFO, 0, "]\n");
-
- return 0;
-}
-
-static int mantis_i2c_write(struct mantis_pci *mantis, const struct i2c_msg *msg)
-{
- int i;
- u32 txd = 0, stat, trials;
-
- dprintk(MANTIS_INFO, 0, " %s: Address=[0x%02x] <W>[ ",
- __func__, msg->addr);
-
- for (i = 0; i < msg->len; i++) {
- dprintk(MANTIS_INFO, 0, "%02x ", msg->buf[i]);
- txd = (msg->addr << 25) | (msg->buf[i] << 8)
- | MANTIS_I2C_RATE_3
- | MANTIS_I2C_STOP
- | MANTIS_I2C_PGMODE;
-
- if (i == (msg->len - 1))
- txd &= ~MANTIS_I2C_STOP;
-
- mmwrite(MANTIS_INT_I2CDONE, MANTIS_INT_STAT);
- mmwrite(txd, MANTIS_I2CDATA_CTL);
-
- /* wait for xfer completion */
- for (trials = 0; trials < TRIALS; trials++) {
- stat = mmread(MANTIS_INT_STAT);
- if (stat & MANTIS_INT_I2CDONE)
- break;
- }
-
- dprintk(MANTIS_TMG, 0, "I2CDONE: trials=%d\n", trials);
-
- /* wait for xfer completion */
- for (trials = 0; trials < TRIALS; trials++) {
- stat = mmread(MANTIS_INT_STAT);
- if (stat & MANTIS_INT_I2CRACK)
- break;
- }
-
- dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials);
- }
- dprintk(MANTIS_INFO, 0, "]\n");
-
- return 0;
-}
-
-static int mantis_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num)
-{
- int ret = 0, i = 0, trials;
- u32 stat, data, txd;
- struct mantis_pci *mantis;
- struct mantis_hwconfig *config;
-
- mantis = i2c_get_adapdata(adapter);
- BUG_ON(!mantis);
- config = mantis->hwconfig;
- BUG_ON(!config);
-
- dprintk(MANTIS_DEBUG, 1, "Messages:%d", num);
- mutex_lock(&mantis->i2c_lock);
-
- while (i < num) {
- /* Byte MODE */
- if ((config->i2c_mode & MANTIS_BYTE_MODE) &&
- ((i + 1) < num) &&
- (msgs[i].len < 2) &&
- (msgs[i + 1].len < 2) &&
- (msgs[i + 1].flags & I2C_M_RD)) {
-
- dprintk(MANTIS_DEBUG, 0, " Byte MODE:\n");
-
- /* Read operation */
- txd = msgs[i].addr << 25 | (0x1 << 24)
- | (msgs[i].buf[0] << 16)
- | MANTIS_I2C_RATE_3;
-
- mmwrite(txd, MANTIS_I2CDATA_CTL);
- /* wait for xfer completion */
- for (trials = 0; trials < TRIALS; trials++) {
- stat = mmread(MANTIS_INT_STAT);
- if (stat & MANTIS_INT_I2CDONE)
- break;
- }
-
- /* check for xfer completion */
- if (stat & MANTIS_INT_I2CDONE) {
- /* check xfer was acknowledged */
- if (stat & MANTIS_INT_I2CRACK) {
- data = mmread(MANTIS_I2CDATA_CTL);
- msgs[i + 1].buf[0] = (data >> 8) & 0xff;
- dprintk(MANTIS_DEBUG, 0, " Byte <%d> RXD=0x%02x [%02x]\n", 0x0, data, msgs[i + 1].buf[0]);
- } else {
- /* I/O error */
- dprintk(MANTIS_ERROR, 1, " I/O error, LINE:%d", __LINE__);
- ret = -EIO;
- break;
- }
- } else {
- /* I/O error */
- dprintk(MANTIS_ERROR, 1, " I/O error, LINE:%d", __LINE__);
- ret = -EIO;
- break;
- }
- i += 2; /* Write/Read operation in one go */
- }
-
- if (i < num) {
- if (msgs[i].flags & I2C_M_RD)
- ret = mantis_i2c_read(mantis, &msgs[i]);
- else
- ret = mantis_i2c_write(mantis, &msgs[i]);
-
- i++;
- if (ret < 0)
- goto bail_out;
- }
-
- }
-
- mutex_unlock(&mantis->i2c_lock);
-
- return num;
-
-bail_out:
- mutex_unlock(&mantis->i2c_lock);
- return ret;
-}
-
-static u32 mantis_i2c_func(struct i2c_adapter *adapter)
-{
- return I2C_FUNC_SMBUS_EMUL;
-}
-
-static struct i2c_algorithm mantis_algo = {
- .master_xfer = mantis_i2c_xfer,
- .functionality = mantis_i2c_func,
-};
-
-int __devinit mantis_i2c_init(struct mantis_pci *mantis)
-{
- u32 intstat, intmask;
- struct i2c_adapter *i2c_adapter = &mantis->adapter;
- struct pci_dev *pdev = mantis->pdev;
-
- init_waitqueue_head(&mantis->i2c_wq);
- mutex_init(&mantis->i2c_lock);
- strncpy(i2c_adapter->name, "Mantis I2C", sizeof(i2c_adapter->name));
- i2c_set_adapdata(i2c_adapter, mantis);
-
- i2c_adapter->owner = THIS_MODULE;
- i2c_adapter->algo = &mantis_algo;
- i2c_adapter->algo_data = NULL;
- i2c_adapter->timeout = 500;
- i2c_adapter->retries = 3;
- i2c_adapter->dev.parent = &pdev->dev;
-
- mantis->i2c_rc = i2c_add_adapter(i2c_adapter);
- if (mantis->i2c_rc < 0)
- return mantis->i2c_rc;
-
- dprintk(MANTIS_DEBUG, 1, "Initializing I2C ..");
-
- intstat = mmread(MANTIS_INT_STAT);
- intmask = mmread(MANTIS_INT_MASK);
- mmwrite(intstat, MANTIS_INT_STAT);
- dprintk(MANTIS_DEBUG, 1, "Disabling I2C interrupt");
- intmask = mmread(MANTIS_INT_MASK);
- mmwrite((intmask & ~MANTIS_INT_I2CDONE), MANTIS_INT_MASK);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(mantis_i2c_init);
-
-int mantis_i2c_exit(struct mantis_pci *mantis)
-{
- u32 intmask;
-
- dprintk(MANTIS_DEBUG, 1, "Disabling I2C interrupt");
- intmask = mmread(MANTIS_INT_MASK);
- mmwrite((intmask & ~MANTIS_INT_I2CDONE), MANTIS_INT_MASK);
-
- dprintk(MANTIS_DEBUG, 1, "Removing I2C adapter");
- return i2c_del_adapter(&mantis->adapter);
-}
-EXPORT_SYMBOL_GPL(mantis_i2c_exit);
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