summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c')
-rw-r--r--drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c850
1 files changed, 0 insertions, 850 deletions
diff --git a/drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c b/drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c
deleted file mode 100644
index 34434557ef65..000000000000
--- a/drivers/media/dvb/dvb-usb-v2/mxl111sf-i2c.c
+++ /dev/null
@@ -1,850 +0,0 @@
-/*
- * mxl111sf-i2c.c - driver for the MaxLinear MXL111SF
- *
- * Copyright (C) 2010 Michael Krufky <mkrufky@kernellabs.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 "mxl111sf-i2c.h"
-#include "mxl111sf.h"
-
-/* SW-I2C ----------------------------------------------------------------- */
-
-#define SW_I2C_ADDR 0x1a
-#define SW_I2C_EN 0x02
-#define SW_SCL_OUT 0x04
-#define SW_SDA_OUT 0x08
-#define SW_SDA_IN 0x04
-
-#define SW_I2C_BUSY_ADDR 0x2f
-#define SW_I2C_BUSY 0x02
-
-static int mxl111sf_i2c_bitbang_sendbyte(struct mxl111sf_state *state,
- u8 byte)
-{
- int i, ret;
- u8 data = 0;
-
- mxl_i2c("(0x%02x)", byte);
-
- ret = mxl111sf_read_reg(state, SW_I2C_BUSY_ADDR, &data);
- if (mxl_fail(ret))
- goto fail;
-
- for (i = 0; i < 8; i++) {
-
- data = (byte & (0x80 >> i)) ? SW_SDA_OUT : 0;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | data);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | data | SW_SCL_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | data);
- if (mxl_fail(ret))
- goto fail;
- }
-
- /* last bit was 0 so we need to release SDA */
- if (!(byte & 1)) {
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
- }
-
- /* CLK high for ACK readback */
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_read_reg(state, SW_I2C_BUSY_ADDR, &data);
- if (mxl_fail(ret))
- goto fail;
-
- /* drop the CLK after getting ACK, SDA will go high right away */
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- if (data & SW_SDA_IN)
- ret = -EIO;
-fail:
- return ret;
-}
-
-static int mxl111sf_i2c_bitbang_recvbyte(struct mxl111sf_state *state,
- u8 *pbyte)
-{
- int i, ret;
- u8 byte = 0;
- u8 data = 0;
-
- mxl_i2c("()");
-
- *pbyte = 0;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- for (i = 0; i < 8; i++) {
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN |
- SW_SCL_OUT | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_read_reg(state, SW_I2C_BUSY_ADDR, &data);
- if (mxl_fail(ret))
- goto fail;
-
- if (data & SW_SDA_IN)
- byte |= (0x80 >> i);
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
- }
- *pbyte = byte;
-fail:
- return ret;
-}
-
-static int mxl111sf_i2c_start(struct mxl111sf_state *state)
-{
- int ret;
-
- mxl_i2c("()");
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN); /* start */
- mxl_fail(ret);
-fail:
- return ret;
-}
-
-static int mxl111sf_i2c_stop(struct mxl111sf_state *state)
-{
- int ret;
-
- mxl_i2c("()");
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN); /* stop */
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_SCL_OUT | SW_SDA_OUT);
- mxl_fail(ret);
-fail:
- return ret;
-}
-
-static int mxl111sf_i2c_ack(struct mxl111sf_state *state)
-{
- int ret;
- u8 b = 0;
-
- mxl_i2c("()");
-
- ret = mxl111sf_read_reg(state, SW_I2C_BUSY_ADDR, &b);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN);
- if (mxl_fail(ret))
- goto fail;
-
- /* pull SDA low */
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- mxl_fail(ret);
-fail:
- return ret;
-}
-
-static int mxl111sf_i2c_nack(struct mxl111sf_state *state)
-{
- int ret;
-
- mxl_i2c("()");
-
- /* SDA high to signal last byte read from slave */
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SCL_OUT | SW_SDA_OUT);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_write_reg(state, SW_I2C_ADDR,
- 0x10 | SW_I2C_EN | SW_SDA_OUT);
- mxl_fail(ret);
-fail:
- return ret;
-}
-
-/* ------------------------------------------------------------------------ */
-
-static int mxl111sf_i2c_sw_xfer_msg(struct mxl111sf_state *state,
- struct i2c_msg *msg)
-{
- int i, ret;
-
- mxl_i2c("()");
-
- if (msg->flags & I2C_M_RD) {
-
- ret = mxl111sf_i2c_start(state);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_i2c_bitbang_sendbyte(state,
- (msg->addr << 1) | 0x01);
- if (mxl_fail(ret)) {
- mxl111sf_i2c_stop(state);
- goto fail;
- }
-
- for (i = 0; i < msg->len; i++) {
- ret = mxl111sf_i2c_bitbang_recvbyte(state,
- &msg->buf[i]);
- if (mxl_fail(ret)) {
- mxl111sf_i2c_stop(state);
- goto fail;
- }
-
- if (i < msg->len - 1)
- mxl111sf_i2c_ack(state);
- }
-
- mxl111sf_i2c_nack(state);
-
- ret = mxl111sf_i2c_stop(state);
- if (mxl_fail(ret))
- goto fail;
-
- } else {
-
- ret = mxl111sf_i2c_start(state);
- if (mxl_fail(ret))
- goto fail;
-
- ret = mxl111sf_i2c_bitbang_sendbyte(state,
- (msg->addr << 1) & 0xfe);
- if (mxl_fail(ret)) {
- mxl111sf_i2c_stop(state);
- goto fail;
- }
-
- for (i = 0; i < msg->len; i++) {
- ret = mxl111sf_i2c_bitbang_sendbyte(state,
- msg->buf[i]);
- if (mxl_fail(ret)) {
- mxl111sf_i2c_stop(state);
- goto fail;
- }
- }
-
- /* FIXME: we only want to do this on the last transaction */
- mxl111sf_i2c_stop(state);
- }
-fail:
- return ret;
-}
-
-/* HW-I2C ----------------------------------------------------------------- */
-
-#define USB_WRITE_I2C_CMD 0x99
-#define USB_READ_I2C_CMD 0xdd
-#define USB_END_I2C_CMD 0xfe
-
-#define USB_WRITE_I2C_CMD_LEN 26
-#define USB_READ_I2C_CMD_LEN 24
-
-#define I2C_MUX_REG 0x30
-#define I2C_CONTROL_REG 0x00
-#define I2C_SLAVE_ADDR_REG 0x08
-#define I2C_DATA_REG 0x0c
-#define I2C_INT_STATUS_REG 0x10
-
-static int mxl111sf_i2c_send_data(struct mxl111sf_state *state,
- u8 index, u8 *wdata)
-{
- int ret = mxl111sf_ctrl_msg(state->d, wdata[0],
- &wdata[1], 25, NULL, 0);
- mxl_fail(ret);
-
- return ret;
-}
-
-static int mxl111sf_i2c_get_data(struct mxl111sf_state *state,
- u8 index, u8 *wdata, u8 *rdata)
-{
- int ret = mxl111sf_ctrl_msg(state->d, wdata[0],
- &wdata[1], 25, rdata, 24);
- mxl_fail(ret);
-
- return ret;
-}
-
-static u8 mxl111sf_i2c_check_status(struct mxl111sf_state *state)
-{
- u8 status = 0;
- u8 buf[26];
-
- mxl_i2c_adv("()");
-
- buf[0] = USB_READ_I2C_CMD;
- buf[1] = 0x00;
-
- buf[2] = I2C_INT_STATUS_REG;
- buf[3] = 0x00;
- buf[4] = 0x00;
-
- buf[5] = USB_END_I2C_CMD;
-
- mxl111sf_i2c_get_data(state, 0, buf, buf);
-
- if (buf[1] & 0x04)
- status = 1;
-
- return status;
-}
-
-static u8 mxl111sf_i2c_check_fifo(struct mxl111sf_state *state)
-{
- u8 status = 0;
- u8 buf[26];
-
- mxl_i2c("()");
-
- buf[0] = USB_READ_I2C_CMD;
- buf[1] = 0x00;
-
- buf[2] = I2C_MUX_REG;
- buf[3] = 0x00;
- buf[4] = 0x00;
-
- buf[5] = I2C_INT_STATUS_REG;
- buf[6] = 0x00;
- buf[7] = 0x00;
- buf[8] = USB_END_I2C_CMD;
-
- mxl111sf_i2c_get_data(state, 0, buf, buf);
-
- if (0x08 == (buf[1] & 0x08))
- status = 1;
-
- if ((buf[5] & 0x02) == 0x02)
- mxl_i2c("(buf[5] & 0x02) == 0x02"); /* FIXME */
-
- return status;
-}
-
-static int mxl111sf_i2c_readagain(struct mxl111sf_state *state,
- u8 count, u8 *rbuf)
-{
- u8 i2c_w_data[26];
- u8 i2c_r_data[24];
- u8 i = 0;
- u8 fifo_status = 0;
- int status = 0;
-
- mxl_i2c("read %d bytes", count);
-
- while ((fifo_status == 0) && (i++ < 5))
- fifo_status = mxl111sf_i2c_check_fifo(state);
-
- i2c_w_data[0] = 0xDD;
- i2c_w_data[1] = 0x00;
-
- for (i = 2; i < 26; i++)
- i2c_w_data[i] = 0xFE;
-
- for (i = 0; i < count; i++) {
- i2c_w_data[2+(i*3)] = 0x0C;
- i2c_w_data[3+(i*3)] = 0x00;
- i2c_w_data[4+(i*3)] = 0x00;
- }
-
- mxl111sf_i2c_get_data(state, 0, i2c_w_data, i2c_r_data);
-
- /* Check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("error!");
- } else {
- for (i = 0; i < count; i++) {
- rbuf[i] = i2c_r_data[(i*3)+1];
- mxl_i2c("%02x\t %02x",
- i2c_r_data[(i*3)+1],
- i2c_r_data[(i*3)+2]);
- }
-
- status = 1;
- }
-
- return status;
-}
-
-#define HWI2C400 1
-static int mxl111sf_i2c_hw_xfer_msg(struct mxl111sf_state *state,
- struct i2c_msg *msg)
-{
- int i, k, ret = 0;
- u16 index = 0;
- u8 buf[26];
- u8 i2c_r_data[24];
- u16 block_len;
- u16 left_over_len;
- u8 rd_status[8];
- u8 ret_status;
- u8 readbuff[26];
-
- mxl_i2c("addr: 0x%02x, read buff len: %d, write buff len: %d",
- msg->addr, (msg->flags & I2C_M_RD) ? msg->len : 0,
- (!(msg->flags & I2C_M_RD)) ? msg->len : 0);
-
- for (index = 0; index < 26; index++)
- buf[index] = USB_END_I2C_CMD;
-
- /* command to indicate data payload is destined for I2C interface */
- buf[0] = USB_WRITE_I2C_CMD;
- buf[1] = 0x00;
-
- /* enable I2C interface */
- buf[2] = I2C_MUX_REG;
- buf[3] = 0x80;
- buf[4] = 0x00;
-
- /* enable I2C interface */
- buf[5] = I2C_MUX_REG;
- buf[6] = 0x81;
- buf[7] = 0x00;
-
- /* set Timeout register on I2C interface */
- buf[8] = 0x14;
- buf[9] = 0xff;
- buf[10] = 0x00;
-#if 0
- /* enable Interrupts on I2C interface */
- buf[8] = 0x24;
- buf[9] = 0xF7;
- buf[10] = 0x00;
-#endif
- buf[11] = 0x24;
- buf[12] = 0xF7;
- buf[13] = 0x00;
-
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* write data on I2C bus */
- if (!(msg->flags & I2C_M_RD) && (msg->len > 0)) {
- mxl_i2c("%d\t%02x", msg->len, msg->buf[0]);
-
- /* control register on I2C interface to initialize I2C bus */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x5E;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
-
- /* I2C Slave device Address */
- buf[5] = I2C_SLAVE_ADDR_REG;
- buf[6] = (msg->addr);
- buf[7] = 0x00;
- buf[8] = USB_END_I2C_CMD;
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* check for slave device status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK writing slave address %02x",
- msg->addr);
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x4E;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- /* I2C interface can do I2C operations in block of 8 bytes of
- I2C data. calculation to figure out number of blocks of i2c
- data required to program */
- block_len = (msg->len / 8);
- left_over_len = (msg->len % 8);
- index = 0;
-
- mxl_i2c("block_len %d, left_over_len %d",
- block_len, left_over_len);
-
- for (index = 0; index < block_len; index++) {
- for (i = 0; i < 8; i++) {
- /* write data on I2C interface */
- buf[2+(i*3)] = I2C_DATA_REG;
- buf[3+(i*3)] = msg->buf[(index*8)+i];
- buf[4+(i*3)] = 0x00;
- }
-
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK writing slave address %02x",
- msg->addr);
-
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x4E;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- }
-
- if (left_over_len) {
- for (k = 0; k < 26; k++)
- buf[k] = USB_END_I2C_CMD;
-
- buf[0] = 0x99;
- buf[1] = 0x00;
-
- for (i = 0; i < left_over_len; i++) {
- buf[2+(i*3)] = I2C_DATA_REG;
- buf[3+(i*3)] = msg->buf[(index*8)+i];
- mxl_i2c("index = %d %d data %d",
- index, i, msg->buf[(index*8)+i]);
- buf[4+(i*3)] = 0x00;
- }
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK writing slave address %02x",
- msg->addr);
-
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x4E;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- }
-
- /* issue I2C STOP after write */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x4E;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
-
- }
-
- /* read data from I2C bus */
- if ((msg->flags & I2C_M_RD) && (msg->len > 0)) {
- mxl_i2c("read buf len %d", msg->len);
-
- /* command to indicate data payload is
- destined for I2C interface */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xDF;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
-
- /* I2C xfer length */
- buf[5] = 0x14;
- buf[6] = (msg->len & 0xFF);
- buf[7] = 0;
-
- /* I2C slave device Address */
- buf[8] = I2C_SLAVE_ADDR_REG;
- buf[9] = msg->addr;
- buf[10] = 0x00;
- buf[11] = USB_END_I2C_CMD;
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK reading slave address %02x",
- msg->addr);
-
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xC7;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- /* I2C interface can do I2C operations in block of 8 bytes of
- I2C data. calculation to figure out number of blocks of
- i2c data required to program */
- block_len = ((msg->len) / 8);
- left_over_len = ((msg->len) % 8);
- index = 0;
-
- mxl_i2c("block_len %d, left_over_len %d",
- block_len, left_over_len);
-
- /* command to read data from I2C interface */
- buf[0] = USB_READ_I2C_CMD;
- buf[1] = 0x00;
-
- for (index = 0; index < block_len; index++) {
- /* setup I2C read request packet on I2C interface */
- for (i = 0; i < 8; i++) {
- buf[2+(i*3)] = I2C_DATA_REG;
- buf[3+(i*3)] = 0x00;
- buf[4+(i*3)] = 0x00;
- }
-
- ret = mxl111sf_i2c_get_data(state, 0, buf, i2c_r_data);
-
- /* check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK reading slave address %02x",
- msg->addr);
-
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xC7;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- /* copy data from i2c data payload to read buffer */
- for (i = 0; i < 8; i++) {
- rd_status[i] = i2c_r_data[(i*3)+2];
-
- if (rd_status[i] == 0x04) {
- if (i < 7) {
- mxl_i2c("i2c fifo empty!"
- " @ %d", i);
- msg->buf[(index*8)+i] =
- i2c_r_data[(i*3)+1];
- /* read again */
- ret_status =
- mxl111sf_i2c_readagain(
- state, 8-(i+1),
- readbuff);
- if (ret_status == 1) {
- for (k = 0;
- k < 8-(i+1);
- k++) {
-
- msg->buf[(index*8)+(k+i+1)] =
- readbuff[k];
- mxl_i2c("read data: %02x\t %02x",
- msg->buf[(index*8)+(k+i)],
- (index*8)+(k+i));
- mxl_i2c("read data: %02x\t %02x",
- msg->buf[(index*8)+(k+i+1)],
- readbuff[k]);
-
- }
- goto stop_copy;
- } else {
- mxl_i2c("readagain "
- "ERROR!");
- }
- } else {
- msg->buf[(index*8)+i] =
- i2c_r_data[(i*3)+1];
- }
- } else {
- msg->buf[(index*8)+i] =
- i2c_r_data[(i*3)+1];
- }
- }
-stop_copy:
- ;
-
- }
-
- if (left_over_len) {
- for (k = 0; k < 26; k++)
- buf[k] = USB_END_I2C_CMD;
-
- buf[0] = 0xDD;
- buf[1] = 0x00;
-
- for (i = 0; i < left_over_len; i++) {
- buf[2+(i*3)] = I2C_DATA_REG;
- buf[3+(i*3)] = 0x00;
- buf[4+(i*3)] = 0x00;
- }
- ret = mxl111sf_i2c_get_data(state, 0, buf,
- i2c_r_data);
-
- /* check for I2C NACK status */
- if (mxl111sf_i2c_check_status(state) == 1) {
- mxl_i2c("NACK reading slave address %02x",
- msg->addr);
-
- /* if NACK, stop I2C bus and exit */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xC7;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
- ret = -EIO;
- goto exit;
- }
-
- for (i = 0; i < left_over_len; i++) {
- msg->buf[(block_len*8)+i] =
- i2c_r_data[(i*3)+1];
- mxl_i2c("read data: %02x\t %02x",
- i2c_r_data[(i*3)+1],
- i2c_r_data[(i*3)+2]);
- }
- }
-
- /* indicate I2C interface to issue NACK
- after next I2C read op */
- buf[0] = USB_WRITE_I2C_CMD;
- buf[1] = 0x00;
-
- /* control register */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0x17;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
-
- buf[5] = USB_END_I2C_CMD;
- ret = mxl111sf_i2c_send_data(state, 0, buf);
-
- /* control register */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xC7;
- buf[4] = (HWI2C400) ? 0x03 : 0x0D;
-
- }
-exit:
- /* STOP and disable I2C MUX */
- buf[0] = USB_WRITE_I2C_CMD;
- buf[1] = 0x00;
-
- /* de-initilize I2C BUS */
- buf[5] = USB_END_I2C_CMD;
- mxl111sf_i2c_send_data(state, 0, buf);
-
- /* Control Register */
- buf[2] = I2C_CONTROL_REG;
- buf[3] = 0xDF;
- buf[4] = 0x03;
-
- /* disable I2C interface */
- buf[5] = I2C_MUX_REG;
- buf[6] = 0x00;
- buf[7] = 0x00;
-
- /* de-initilize I2C BUS */
- buf[8] = USB_END_I2C_CMD;
- mxl111sf_i2c_send_data(state, 0, buf);
-
- /* disable I2C interface */
- buf[2] = I2C_MUX_REG;
- buf[3] = 0x81;
- buf[4] = 0x00;
-
- /* disable I2C interface */
- buf[5] = I2C_MUX_REG;
- buf[6] = 0x00;
- buf[7] = 0x00;
-
- /* disable I2C interface */
- buf[8] = I2C_MUX_REG;
- buf[9] = 0x00;
- buf[10] = 0x00;
-
- buf[11] = USB_END_I2C_CMD;
- mxl111sf_i2c_send_data(state, 0, buf);
-
- return ret;
-}
-
-/* ------------------------------------------------------------------------ */
-
-int mxl111sf_i2c_xfer(struct i2c_adapter *adap,
- struct i2c_msg msg[], int num)
-{
- struct dvb_usb_device *d = i2c_get_adapdata(adap);
- struct mxl111sf_state *state = d->priv;
- int hwi2c = (state->chip_rev > MXL111SF_V6);
- int i, ret;
-
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
- return -EAGAIN;
-
- for (i = 0; i < num; i++) {
- ret = (hwi2c) ?
- mxl111sf_i2c_hw_xfer_msg(state, &msg[i]) :
- mxl111sf_i2c_sw_xfer_msg(state, &msg[i]);
- if (mxl_fail(ret)) {
- mxl_debug_adv("failed with error %d on i2c "
- "transaction %d of %d, %sing %d bytes "
- "to/from 0x%02x", ret, i+1, num,
- (msg[i].flags & I2C_M_RD) ?
- "read" : "writ",
- msg[i].len, msg[i].addr);
-
- break;
- }
- }
-
- mutex_unlock(&d->i2c_mutex);
-
- return i == num ? num : -EREMOTEIO;
-}
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-01 05:43:33 +0100