diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb-frontends/mxl692.c | 1369 |
1 files changed, 1369 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mxl692.c b/drivers/media/dvb-frontends/mxl692.c new file mode 100644 index 000000000..129630cbf --- /dev/null +++ b/drivers/media/dvb-frontends/mxl692.c @@ -0,0 +1,1369 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the MaxLinear MxL69x family of combo tuners/demods + * + * Copyright (C) 2020 Brad Love <brad@nextdimension.cc> + * + * based on code: + * Copyright (c) 2016 MaxLinear, Inc. All rights reserved + * which was released under GPL V2 + */ + +#include <linux/mutex.h> +#include <linux/i2c-mux.h> +#include <linux/string.h> +#include <linux/firmware.h> + +#include "mxl692.h" +#include "mxl692_defs.h" + +static const struct dvb_frontend_ops mxl692_ops; + +struct mxl692_dev { + struct dvb_frontend fe; + struct i2c_client *i2c_client; + struct mutex i2c_lock; /* i2c command mutex */ + enum MXL_EAGLE_DEMOD_TYPE_E demod_type; + enum MXL_EAGLE_POWER_MODE_E power_mode; + u32 current_frequency; + int device_type; + int seqnum; + int init_done; +}; + +static int mxl692_i2c_write(struct mxl692_dev *dev, u8 *buffer, u16 buf_len) +{ + int ret = 0; + struct i2c_msg msg = { + .addr = dev->i2c_client->addr, + .flags = 0, + .buf = buffer, + .len = buf_len + }; + + ret = i2c_transfer(dev->i2c_client->adapter, &msg, 1); + if (ret != 1) + dev_dbg(&dev->i2c_client->dev, "i2c write error!\n"); + + return ret; +} + +static int mxl692_i2c_read(struct mxl692_dev *dev, u8 *buffer, u16 buf_len) +{ + int ret = 0; + struct i2c_msg msg = { + .addr = dev->i2c_client->addr, + .flags = I2C_M_RD, + .buf = buffer, + .len = buf_len + }; + + ret = i2c_transfer(dev->i2c_client->adapter, &msg, 1); + if (ret != 1) + dev_dbg(&dev->i2c_client->dev, "i2c read error!\n"); + + return ret; +} + +static int convert_endian(u32 size, u8 *d) +{ + u32 i; + + for (i = 0; i < (size & ~3); i += 4) { + d[i + 0] ^= d[i + 3]; + d[i + 3] ^= d[i + 0]; + d[i + 0] ^= d[i + 3]; + + d[i + 1] ^= d[i + 2]; + d[i + 2] ^= d[i + 1]; + d[i + 1] ^= d[i + 2]; + } + + switch (size & 3) { + case 0: + case 1: + /* do nothing */ + break; + case 2: + d[i + 0] ^= d[i + 1]; + d[i + 1] ^= d[i + 0]; + d[i + 0] ^= d[i + 1]; + break; + + case 3: + d[i + 0] ^= d[i + 2]; + d[i + 2] ^= d[i + 0]; + d[i + 0] ^= d[i + 2]; + break; + } + return size; +} + +static int convert_endian_n(int n, u32 size, u8 *d) +{ + int i, count = 0; + + for (i = 0; i < n; i += size) + count += convert_endian(size, d + i); + return count; +} + +static void mxl692_tx_swap(enum MXL_EAGLE_OPCODE_E opcode, u8 *buffer) +{ +#ifdef __BIG_ENDIAN + return; +#endif + buffer += MXL_EAGLE_HOST_MSG_HEADER_SIZE; /* skip API header */ + + switch (opcode) { + case MXL_EAGLE_OPCODE_DEVICE_INTR_MASK_SET: + case MXL_EAGLE_OPCODE_TUNER_CHANNEL_TUNE_SET: + case MXL_EAGLE_OPCODE_SMA_TRANSMIT_SET: + buffer += convert_endian(sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_PARAMS_SET: + buffer += 5; + buffer += convert_endian(2 * sizeof(u32), buffer); + break; + default: + /* no swapping - all get opcodes */ + /* ATSC/OOB no swapping */ + break; + } +} + +static void mxl692_rx_swap(enum MXL_EAGLE_OPCODE_E opcode, u8 *buffer) +{ +#ifdef __BIG_ENDIAN + return; +#endif + buffer += MXL_EAGLE_HOST_MSG_HEADER_SIZE; /* skip API header */ + + switch (opcode) { + case MXL_EAGLE_OPCODE_TUNER_AGC_STATUS_GET: + buffer++; + buffer += convert_endian(2 * sizeof(u16), buffer); + break; + case MXL_EAGLE_OPCODE_ATSC_STATUS_GET: + buffer += convert_endian_n(2, sizeof(u16), buffer); + buffer += convert_endian(sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_ATSC_ERROR_COUNTERS_GET: + buffer += convert_endian(3 * sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_ATSC_EQUALIZER_FILTER_FFE_TAPS_GET: + buffer += convert_endian_n(24, sizeof(u16), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_STATUS_GET: + buffer += 8; + buffer += convert_endian_n(2, sizeof(u16), buffer); + buffer += convert_endian(sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_ERROR_COUNTERS_GET: + buffer += convert_endian(7 * sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_CONSTELLATION_VALUE_GET: + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_DFE_START_GET: + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_DFE_MIDDLE_GET: + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_DFE_END_GET: + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_SPUR_START_GET: + buffer += convert_endian_n(24, sizeof(u16), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_SPUR_END_GET: + buffer += convert_endian_n(8, sizeof(u16), buffer); + break; + case MXL_EAGLE_OPCODE_QAM_EQUALIZER_FILTER_FFE_GET: + buffer += convert_endian_n(17, sizeof(u16), buffer); + break; + case MXL_EAGLE_OPCODE_OOB_ERROR_COUNTERS_GET: + buffer += convert_endian(3 * sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_OOB_STATUS_GET: + buffer += convert_endian_n(2, sizeof(u16), buffer); + buffer += convert_endian(sizeof(u32), buffer); + break; + case MXL_EAGLE_OPCODE_SMA_RECEIVE_GET: + buffer += convert_endian(sizeof(u32), buffer); + break; + default: + /* no swapping - all set opcodes */ + break; + } +} + +static u32 mxl692_checksum(u8 *buffer, u32 size) +{ + u32 ix, div_size; + u32 cur_cksum = 0; + __be32 *buf; + + div_size = DIV_ROUND_UP(size, 4); + + buf = (__be32 *)buffer; + for (ix = 0; ix < div_size; ix++) + cur_cksum += be32_to_cpu(buf[ix]); + + cur_cksum ^= 0xDEADBEEF; + + return cur_cksum; +} + +static int mxl692_validate_fw_header(struct mxl692_dev *dev, + const u8 *buffer, u32 buf_len) +{ + int status = 0; + u32 ix, temp; + __be32 *local_buf = NULL; + u8 temp_cksum = 0; + static const u8 fw_hdr[] = { + 0x4D, 0x31, 0x10, 0x02, 0x40, 0x00, 0x00, 0x80 + }; + + if (memcmp(buffer, fw_hdr, 8) != 0) { + status = -EINVAL; + goto err_finish; + } + + local_buf = (__be32 *)(buffer + 8); + temp = be32_to_cpu(*local_buf); + + if ((buf_len - 16) != temp >> 8) { + status = -EINVAL; + goto err_finish; + } + + for (ix = 16; ix < buf_len; ix++) + temp_cksum += buffer[ix]; + + if (temp_cksum != buffer[11]) + status = -EINVAL; + +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "failed\n"); + return status; +} + +static int mxl692_write_fw_block(struct mxl692_dev *dev, const u8 *buffer, + u32 buf_len, u32 *index) +{ + int status = 0; + u32 ix = 0, total_len = 0, addr = 0, chunk_len = 0, prevchunk_len = 0; + u8 local_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}, *plocal_buf = NULL; + int payload_max = MXL_EAGLE_MAX_I2C_PACKET_SIZE - MXL_EAGLE_I2C_MHEADER_SIZE; + + ix = *index; + + if (buffer[ix] == 0x53) { + total_len = buffer[ix + 1] << 16 | buffer[ix + 2] << 8 | buffer[ix + 3]; + total_len = (total_len + 3) & ~3; + addr = buffer[ix + 4] << 24 | buffer[ix + 5] << 16 | + buffer[ix + 6] << 8 | buffer[ix + 7]; + ix += MXL_EAGLE_FW_SEGMENT_HEADER_SIZE; + + while ((total_len > 0) && (status == 0)) { + plocal_buf = local_buf; + chunk_len = (total_len < payload_max) ? total_len : payload_max; + + *plocal_buf++ = 0xFC; + *plocal_buf++ = chunk_len + sizeof(u32); + + *(u32 *)plocal_buf = addr + prevchunk_len; +#ifdef __BIG_ENDIAN + convert_endian(sizeof(u32), plocal_buf); +#endif + plocal_buf += sizeof(u32); + + memcpy(plocal_buf, &buffer[ix], chunk_len); + convert_endian(chunk_len, plocal_buf); + if (mxl692_i2c_write(dev, local_buf, + (chunk_len + MXL_EAGLE_I2C_MHEADER_SIZE)) < 0) { + status = -EREMOTEIO; + break; + } + + prevchunk_len += chunk_len; + total_len -= chunk_len; + ix += chunk_len; + } + *index = ix; + } else { + status = -EINVAL; + } + + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + + return status; +} + +static int mxl692_memwrite(struct mxl692_dev *dev, u32 addr, + u8 *buffer, u32 size) +{ + int status = 0, total_len = 0; + u8 local_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}, *plocal_buf = NULL; + + total_len = size; + total_len = (total_len + 3) & ~3; /* 4 byte alignment */ + + if (total_len > (MXL_EAGLE_MAX_I2C_PACKET_SIZE - MXL_EAGLE_I2C_MHEADER_SIZE)) + dev_dbg(&dev->i2c_client->dev, "hrmph?\n"); + + plocal_buf = local_buf; + + *plocal_buf++ = 0xFC; + *plocal_buf++ = total_len + sizeof(u32); + + *(u32 *)plocal_buf = addr; + plocal_buf += sizeof(u32); + + memcpy(plocal_buf, buffer, total_len); +#ifdef __BIG_ENDIAN + convert_endian(sizeof(u32) + total_len, local_buf + 2); +#endif + if (mxl692_i2c_write(dev, local_buf, + (total_len + MXL_EAGLE_I2C_MHEADER_SIZE)) < 0) { + status = -EREMOTEIO; + goto err_finish; + } + + return status; +err_finish: + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_memread(struct mxl692_dev *dev, u32 addr, + u8 *buffer, u32 size) +{ + int status = 0; + u8 local_buf[MXL_EAGLE_I2C_MHEADER_SIZE] = {}, *plocal_buf = NULL; + + plocal_buf = local_buf; + + *plocal_buf++ = 0xFB; + *plocal_buf++ = sizeof(u32); + *(u32 *)plocal_buf = addr; +#ifdef __BIG_ENDIAN + convert_endian(sizeof(u32), plocal_buf); +#endif + mutex_lock(&dev->i2c_lock); + + if (mxl692_i2c_write(dev, local_buf, MXL_EAGLE_I2C_MHEADER_SIZE) > 0) { + size = (size + 3) & ~3; /* 4 byte alignment */ + status = mxl692_i2c_read(dev, buffer, (u16)size) < 0 ? -EREMOTEIO : 0; +#ifdef __BIG_ENDIAN + if (status == 0) + convert_endian(size, buffer); +#endif + } else { + status = -EREMOTEIO; + } + + mutex_unlock(&dev->i2c_lock); + + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + + return status; +} + +static const char *mxl692_opcode_string(u8 opcode) +{ + if (opcode <= MXL_EAGLE_OPCODE_INTERNAL) + return MXL_EAGLE_OPCODE_STRING[opcode]; + + return "invalid opcode"; +} + +static int mxl692_opwrite(struct mxl692_dev *dev, u8 *buffer, + u32 size) +{ + int status = 0, total_len = 0; + u8 local_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}, *plocal_buf = NULL; + struct MXL_EAGLE_HOST_MSG_HEADER_T *tx_hdr = (struct MXL_EAGLE_HOST_MSG_HEADER_T *)buffer; + + total_len = size; + total_len = (total_len + 3) & ~3; /* 4 byte alignment */ + + if (total_len > (MXL_EAGLE_MAX_I2C_PACKET_SIZE - MXL_EAGLE_I2C_PHEADER_SIZE)) + dev_dbg(&dev->i2c_client->dev, "hrmph?\n"); + + plocal_buf = local_buf; + + *plocal_buf++ = 0xFE; + *plocal_buf++ = (u8)total_len; + + memcpy(plocal_buf, buffer, total_len); + convert_endian(total_len, plocal_buf); + + if (mxl692_i2c_write(dev, local_buf, + (total_len + MXL_EAGLE_I2C_PHEADER_SIZE)) < 0) { + status = -EREMOTEIO; + goto err_finish; + } +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "opcode %s err %d\n", + mxl692_opcode_string(tx_hdr->opcode), status); + return status; +} + +static int mxl692_opread(struct mxl692_dev *dev, u8 *buffer, + u32 size) +{ + int status = 0; + u32 ix = 0; + u8 local_buf[MXL_EAGLE_I2C_PHEADER_SIZE] = {}; + + local_buf[0] = 0xFD; + local_buf[1] = 0; + + if (mxl692_i2c_write(dev, local_buf, MXL_EAGLE_I2C_PHEADER_SIZE) > 0) { + size = (size + 3) & ~3; /* 4 byte alignment */ + + /* Read in 4 byte chunks */ + for (ix = 0; ix < size; ix += 4) { + if (mxl692_i2c_read(dev, buffer + ix, 4) < 0) { + dev_dbg(&dev->i2c_client->dev, "ix=%d size=%d\n", ix, size); + status = -EREMOTEIO; + goto err_finish; + } + } + convert_endian(size, buffer); + } else { + status = -EREMOTEIO; + } +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_i2c_writeread(struct mxl692_dev *dev, + u8 opcode, + u8 *tx_payload, + u8 tx_payload_size, + u8 *rx_payload, + u8 rx_payload_expected) +{ + int status = 0, timeout = 40; + u8 tx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + u32 resp_checksum = 0, resp_checksum_tmp = 0; + struct MXL_EAGLE_HOST_MSG_HEADER_T *tx_header; + struct MXL_EAGLE_HOST_MSG_HEADER_T *rx_header; + + mutex_lock(&dev->i2c_lock); + + if ((tx_payload_size + MXL_EAGLE_HOST_MSG_HEADER_SIZE) > + (MXL_EAGLE_MAX_I2C_PACKET_SIZE - MXL_EAGLE_I2C_PHEADER_SIZE)) { + status = -EINVAL; + goto err_finish; + } + + tx_header = (struct MXL_EAGLE_HOST_MSG_HEADER_T *)tx_buf; + tx_header->opcode = opcode; + tx_header->seqnum = dev->seqnum++; + tx_header->payload_size = tx_payload_size; + tx_header->checksum = 0; + + if (dev->seqnum == 0) + dev->seqnum = 1; + + if (tx_payload && tx_payload_size > 0) + memcpy(&tx_buf[MXL_EAGLE_HOST_MSG_HEADER_SIZE], tx_payload, tx_payload_size); + + mxl692_tx_swap(opcode, tx_buf); + + tx_header->checksum = 0; + tx_header->checksum = mxl692_checksum(tx_buf, + MXL_EAGLE_HOST_MSG_HEADER_SIZE + tx_payload_size); +#ifdef __LITTLE_ENDIAN + convert_endian(4, (u8 *)&tx_header->checksum); /* cksum is big endian */ +#endif + /* send Tx message */ + status = mxl692_opwrite(dev, tx_buf, + tx_payload_size + MXL_EAGLE_HOST_MSG_HEADER_SIZE); + if (status) { + status = -EREMOTEIO; + goto err_finish; + } + + /* receive Rx message (polling) */ + rx_header = (struct MXL_EAGLE_HOST_MSG_HEADER_T *)rx_buf; + + do { + status = mxl692_opread(dev, rx_buf, + rx_payload_expected + MXL_EAGLE_HOST_MSG_HEADER_SIZE); + usleep_range(1000, 2000); + timeout--; + } while ((timeout > 0) && (status == 0) && + (rx_header->seqnum == 0) && + (rx_header->checksum == 0)); + + if (timeout == 0 || status) { + dev_dbg(&dev->i2c_client->dev, "timeout=%d status=%d\n", + timeout, status); + status = -ETIMEDOUT; + goto err_finish; + } + + if (rx_header->status) { + dev_dbg(&dev->i2c_client->dev, "rx header status code: %d\n", rx_header->status); + status = -EREMOTEIO; + goto err_finish; + } + + if (rx_header->seqnum != tx_header->seqnum || + rx_header->opcode != tx_header->opcode || + rx_header->payload_size != rx_payload_expected) { + dev_dbg(&dev->i2c_client->dev, "Something failed seq=%s opcode=%s pSize=%s\n", + rx_header->seqnum != tx_header->seqnum ? "X" : "0", + rx_header->opcode != tx_header->opcode ? "X" : "0", + rx_header->payload_size != rx_payload_expected ? "X" : "0"); + if (rx_header->payload_size != rx_payload_expected) + dev_dbg(&dev->i2c_client->dev, + "rx_header->payloadSize=%d rx_payload_expected=%d\n", + rx_header->payload_size, rx_payload_expected); + status = -EREMOTEIO; + goto err_finish; + } + + resp_checksum = rx_header->checksum; + rx_header->checksum = 0; + + resp_checksum_tmp = mxl692_checksum(rx_buf, + MXL_EAGLE_HOST_MSG_HEADER_SIZE + rx_header->payload_size); +#ifdef __LITTLE_ENDIAN + convert_endian(4, (u8 *)&resp_checksum_tmp); /* cksum is big endian */ +#endif + if (resp_checksum != resp_checksum_tmp) { + dev_dbg(&dev->i2c_client->dev, "rx checksum failure\n"); + status = -EREMOTEIO; + goto err_finish; + } + + mxl692_rx_swap(rx_header->opcode, rx_buf); + + if (rx_header->payload_size > 0) { + if (!rx_payload) { + dev_dbg(&dev->i2c_client->dev, "no rx payload?!?\n"); + status = -EREMOTEIO; + goto err_finish; + } + memcpy(rx_payload, rx_buf + MXL_EAGLE_HOST_MSG_HEADER_SIZE, + rx_header->payload_size); + } +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + + mutex_unlock(&dev->i2c_lock); + return status; +} + +static int mxl692_fwdownload(struct mxl692_dev *dev, + const u8 *firmware_buf, u32 buf_len) +{ + int status = 0; + u32 ix, reg_val = 0x1; + u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + struct MXL_EAGLE_DEV_STATUS_T *dev_status; + + if (buf_len < MXL_EAGLE_FW_HEADER_SIZE || + buf_len > MXL_EAGLE_FW_MAX_SIZE_IN_KB * 1000) + return -EINVAL; + + mutex_lock(&dev->i2c_lock); + + dev_dbg(&dev->i2c_client->dev, "\n"); + + status = mxl692_validate_fw_header(dev, firmware_buf, buf_len); + if (status) + goto err_finish; + + ix = 16; + status = mxl692_write_fw_block(dev, firmware_buf, buf_len, &ix); /* DRAM */ + if (status) + goto err_finish; + + status = mxl692_write_fw_block(dev, firmware_buf, buf_len, &ix); /* IRAM */ + if (status) + goto err_finish; + + /* release CPU from reset */ + status = mxl692_memwrite(dev, 0x70000018, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + mutex_unlock(&dev->i2c_lock); + + if (status == 0) { + /* verify FW is alive */ + usleep_range(MXL_EAGLE_FW_LOAD_TIME * 1000, (MXL_EAGLE_FW_LOAD_TIME + 5) * 1000); + dev_status = (struct MXL_EAGLE_DEV_STATUS_T *)&rx_buf; + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_DEVICE_STATUS_GET, + NULL, + 0, + (u8 *)dev_status, + sizeof(struct MXL_EAGLE_DEV_STATUS_T)); + } + + return status; +err_finish: + mutex_unlock(&dev->i2c_lock); + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_get_versions(struct mxl692_dev *dev) +{ + int status = 0; + struct MXL_EAGLE_DEV_VER_T dev_ver = {}; + static const char * const chip_id[] = {"N/A", "691", "248", "692"}; + + status = mxl692_i2c_writeread(dev, MXL_EAGLE_OPCODE_DEVICE_VERSION_GET, + NULL, + 0, + (u8 *)&dev_ver, + sizeof(struct MXL_EAGLE_DEV_VER_T)); + if (status) + return status; + + dev_info(&dev->i2c_client->dev, "MxL692_DEMOD Chip ID: %s\n", + chip_id[dev_ver.chip_id]); + + dev_info(&dev->i2c_client->dev, + "MxL692_DEMOD FW Version: %d.%d.%d.%d_RC%d\n", + dev_ver.firmware_ver[0], + dev_ver.firmware_ver[1], + dev_ver.firmware_ver[2], + dev_ver.firmware_ver[3], + dev_ver.firmware_ver[4]); + + return status; +} + +static int mxl692_reset(struct mxl692_dev *dev) +{ + int status = 0; + u32 dev_type = MXL_EAGLE_DEVICE_MAX, reg_val = 0x2; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + /* legacy i2c override */ + status = mxl692_memwrite(dev, 0x80000100, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* verify sku */ + status = mxl692_memread(dev, 0x70000188, (u8 *)&dev_type, sizeof(u32)); + if (status) + goto err_finish; + + if (dev_type != dev->device_type) + goto err_finish; + +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_config_regulators(struct mxl692_dev *dev, + enum MXL_EAGLE_POWER_SUPPLY_SOURCE_E power_supply) +{ + int status = 0; + u32 reg_val; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + /* configure main regulator according to the power supply source */ + status = mxl692_memread(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val &= 0x00FFFFFF; + reg_val |= (power_supply == MXL_EAGLE_POWER_SUPPLY_SOURCE_SINGLE) ? + 0x14000000 : 0x10000000; + + status = mxl692_memwrite(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* configure digital regulator to high current mode */ + status = mxl692_memread(dev, 0x90000018, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val |= 0x800; + + status = mxl692_memwrite(dev, 0x90000018, (u8 *)®_val, sizeof(u32)); + +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_config_xtal(struct mxl692_dev *dev, + struct MXL_EAGLE_DEV_XTAL_T *dev_xtal) +{ + int status = 0; + u32 reg_val, reg_val1; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + status = mxl692_memread(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* set XTAL capacitance */ + reg_val &= 0xFFFFFFE0; + reg_val |= dev_xtal->xtal_cap; + + /* set CLK OUT */ + reg_val = dev_xtal->clk_out_enable ? (reg_val | 0x0100) : (reg_val & 0xFFFFFEFF); + + status = mxl692_memwrite(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* set CLK OUT divider */ + reg_val = dev_xtal->clk_out_div_enable ? (reg_val | 0x0200) : (reg_val & 0xFFFFFDFF); + + status = mxl692_memwrite(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* set XTAL sharing */ + reg_val = dev_xtal->xtal_sharing_enable ? (reg_val | 0x010400) : (reg_val & 0xFFFEFBFF); + + status = mxl692_memwrite(dev, 0x90000000, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + /* enable/disable XTAL calibration, based on master/slave device */ + status = mxl692_memread(dev, 0x90000030, (u8 *)®_val1, sizeof(u32)); + if (status) + goto err_finish; + + if (dev_xtal->xtal_calibration_enable) { + /* enable XTAL calibration and set XTAL amplitude to a higher value */ + reg_val1 &= 0xFFFFFFFD; + reg_val1 |= 0x30; + + status = mxl692_memwrite(dev, 0x90000030, (u8 *)®_val1, sizeof(u32)); + if (status) + goto err_finish; + } else { + /* disable XTAL calibration */ + reg_val1 |= 0x2; + + status = mxl692_memwrite(dev, 0x90000030, (u8 *)®_val1, sizeof(u32)); + if (status) + goto err_finish; + + /* set XTAL bias value */ + status = mxl692_memread(dev, 0x9000002c, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val &= 0xC0FFFFFF; + reg_val |= 0xA000000; + + status = mxl692_memwrite(dev, 0x9000002c, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + } + + /* start XTAL calibration */ + status = mxl692_memread(dev, 0x70000010, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val |= 0x8; + + status = mxl692_memwrite(dev, 0x70000010, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + status = mxl692_memread(dev, 0x70000018, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val |= 0x10; + + status = mxl692_memwrite(dev, 0x70000018, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + status = mxl692_memread(dev, 0x9001014c, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val &= 0xFFFFEFFF; + + status = mxl692_memwrite(dev, 0x9001014c, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + reg_val |= 0x1000; + + status = mxl692_memwrite(dev, 0x9001014c, (u8 *)®_val, sizeof(u32)); + if (status) + goto err_finish; + + usleep_range(45000, 55000); + +err_finish: + if (status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_powermode(struct mxl692_dev *dev, + enum MXL_EAGLE_POWER_MODE_E power_mode) +{ + int status = 0; + u8 mode = power_mode; + + dev_dbg(&dev->i2c_client->dev, "%s\n", + power_mode == MXL_EAGLE_POWER_MODE_SLEEP ? "sleep" : "active"); + + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_DEVICE_POWERMODE_SET, + &mode, + sizeof(u8), + NULL, + 0); + if (status) { + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; + } + + dev->power_mode = power_mode; + + return status; +} + +static int mxl692_init(struct dvb_frontend *fe) +{ + struct mxl692_dev *dev = fe->demodulator_priv; + struct i2c_client *client = dev->i2c_client; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int status = 0; + const struct firmware *firmware; + struct MXL_EAGLE_DEV_XTAL_T xtal_config = {}; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + if (dev->init_done) + goto warm; + + dev->seqnum = 1; + + status = mxl692_reset(dev); + if (status) + goto err; + + usleep_range(50 * 1000, 60 * 1000); /* was 1000! */ + + status = mxl692_config_regulators(dev, MXL_EAGLE_POWER_SUPPLY_SOURCE_DUAL); + if (status) + goto err; + + xtal_config.xtal_cap = 26; + xtal_config.clk_out_div_enable = 0; + xtal_config.clk_out_enable = 0; + xtal_config.xtal_calibration_enable = 0; + xtal_config.xtal_sharing_enable = 1; + status = mxl692_config_xtal(dev, &xtal_config); + if (status) + goto err; + + status = request_firmware(&firmware, MXL692_FIRMWARE, &client->dev); + if (status) { + dev_dbg(&dev->i2c_client->dev, "firmware missing? %s\n", + MXL692_FIRMWARE); + goto err; + } + + status = mxl692_fwdownload(dev, firmware->data, firmware->size); + if (status) + goto err_release_firmware; + + release_firmware(firmware); + + status = mxl692_get_versions(dev); + if (status) + goto err; + + dev->power_mode = MXL_EAGLE_POWER_MODE_SLEEP; +warm: + /* Config Device Power Mode */ + if (dev->power_mode != MXL_EAGLE_POWER_MODE_ACTIVE) { + status = mxl692_powermode(dev, MXL_EAGLE_POWER_MODE_ACTIVE); + if (status) + goto err; + + usleep_range(50 * 1000, 60 * 1000); /* was 500! */ + } + + /* Init stats here to indicate which stats are supported */ + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.len = 1; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.len = 1; + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + + dev->init_done = 1; + return 0; +err_release_firmware: + release_firmware(firmware); +err: + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_sleep(struct dvb_frontend *fe) +{ + struct mxl692_dev *dev = fe->demodulator_priv; + + if (dev->power_mode != MXL_EAGLE_POWER_MODE_SLEEP) + mxl692_powermode(dev, MXL_EAGLE_POWER_MODE_SLEEP); + + return 0; +} + +static int mxl692_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct mxl692_dev *dev = fe->demodulator_priv; + + int status = 0; + enum MXL_EAGLE_DEMOD_TYPE_E demod_type; + struct MXL_EAGLE_MPEGOUT_PARAMS_T mpeg_params = {}; + enum MXL_EAGLE_QAM_DEMOD_ANNEX_TYPE_E qam_annex = MXL_EAGLE_QAM_DEMOD_ANNEX_B; + struct MXL_EAGLE_QAM_DEMOD_PARAMS_T qam_params = {}; + struct MXL_EAGLE_TUNER_CHANNEL_PARAMS_T tuner_params = {}; + u8 op_param = 0; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + switch (p->modulation) { + case VSB_8: + demod_type = MXL_EAGLE_DEMOD_TYPE_ATSC; + break; + case QAM_AUTO: + case QAM_64: + case QAM_128: + case QAM_256: + demod_type = MXL_EAGLE_DEMOD_TYPE_QAM; + break; + default: + return -EINVAL; + } + + if (dev->current_frequency == p->frequency && dev->demod_type == demod_type) { + dev_dbg(&dev->i2c_client->dev, "already set up\n"); + return 0; + } + + dev->current_frequency = -1; + dev->demod_type = -1; + + op_param = demod_type; + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_DEVICE_DEMODULATOR_TYPE_SET, + &op_param, + sizeof(u8), + NULL, + 0); + if (status) { + dev_dbg(&dev->i2c_client->dev, + "DEVICE_DEMODULATOR_TYPE_SET...FAIL err 0x%x\n", status); + goto err; + } + + usleep_range(20 * 1000, 30 * 1000); /* was 500! */ + + mpeg_params.mpeg_parallel = 0; + mpeg_params.msb_first = MXL_EAGLE_DATA_SERIAL_MSB_1ST; + mpeg_params.mpeg_sync_pulse_width = MXL_EAGLE_DATA_SYNC_WIDTH_BIT; + mpeg_params.mpeg_valid_pol = MXL_EAGLE_CLOCK_POSITIVE; + mpeg_params.mpeg_sync_pol = MXL_EAGLE_CLOCK_POSITIVE; + mpeg_params.mpeg_clk_pol = MXL_EAGLE_CLOCK_NEGATIVE; + mpeg_params.mpeg3wire_mode_enable = 0; + mpeg_params.mpeg_clk_freq = MXL_EAGLE_MPEG_CLOCK_27MHZ; + + switch (demod_type) { + case MXL_EAGLE_DEMOD_TYPE_ATSC: + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_DEVICE_MPEG_OUT_PARAMS_SET, + (u8 *)&mpeg_params, + sizeof(struct MXL_EAGLE_MPEGOUT_PARAMS_T), + NULL, + 0); + if (status) + goto err; + break; + case MXL_EAGLE_DEMOD_TYPE_QAM: + if (qam_annex == MXL_EAGLE_QAM_DEMOD_ANNEX_A) + mpeg_params.msb_first = MXL_EAGLE_DATA_SERIAL_LSB_1ST; + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_DEVICE_MPEG_OUT_PARAMS_SET, + (u8 *)&mpeg_params, + sizeof(struct MXL_EAGLE_MPEGOUT_PARAMS_T), + NULL, + 0); + if (status) + goto err; + + qam_params.annex_type = qam_annex; + qam_params.qam_type = MXL_EAGLE_QAM_DEMOD_AUTO; + qam_params.iq_flip = MXL_EAGLE_DEMOD_IQ_AUTO; + if (p->modulation == QAM_64) + qam_params.symbol_rate_hz = 5057000; + else + qam_params.symbol_rate_hz = 5361000; + + qam_params.symbol_rate_256qam_hz = 5361000; + + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_QAM_PARAMS_SET, + (u8 *)&qam_params, + sizeof(struct MXL_EAGLE_QAM_DEMOD_PARAMS_T), + NULL, 0); + if (status) + goto err; + + break; + default: + break; + } + + usleep_range(20 * 1000, 30 * 1000); /* was 500! */ + + tuner_params.freq_hz = p->frequency; + tuner_params.bandwidth = MXL_EAGLE_TUNER_BW_6MHZ; + tuner_params.tune_mode = MXL_EAGLE_TUNER_CHANNEL_TUNE_MODE_VIEW; + + dev_dbg(&dev->i2c_client->dev, " Tuning Freq: %d %s\n", tuner_params.freq_hz, + demod_type == MXL_EAGLE_DEMOD_TYPE_ATSC ? "ATSC" : "QAM"); + + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_TUNER_CHANNEL_TUNE_SET, + (u8 *)&tuner_params, + sizeof(struct MXL_EAGLE_TUNER_CHANNEL_PARAMS_T), + NULL, + 0); + if (status) + goto err; + + usleep_range(20 * 1000, 30 * 1000); /* was 500! */ + + switch (demod_type) { + case MXL_EAGLE_DEMOD_TYPE_ATSC: + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_ATSC_INIT_SET, + NULL, 0, NULL, 0); + if (status) + goto err; + break; + case MXL_EAGLE_DEMOD_TYPE_QAM: + status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_QAM_RESTART_SET, + NULL, 0, NULL, 0); + if (status) + goto err; + break; + default: + break; + } + + dev->demod_type = demod_type; + dev->current_frequency = p->frequency; + + return 0; +err: + dev_dbg(&dev->i2c_client->dev, "err %d\n", status); + return status; +} + +static int mxl692_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + p->modulation = c->modulation; + p->frequency = c->frequency; + + return 0; +} + +static int mxl692_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct mxl692_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + struct MXL_EAGLE_ATSC_DEMOD_STATUS_T *atsc_status; + struct MXL_EAGLE_QAM_DEMOD_STATUS_T *qam_status; + enum MXL_EAGLE_DEMOD_TYPE_E demod_type = dev->demod_type; + int mxl_status = 0; + + *snr = 0; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + atsc_status = (struct MXL_EAGLE_ATSC_DEMOD_STATUS_T *)&rx_buf; + qam_status = (struct MXL_EAGLE_QAM_DEMOD_STATUS_T *)&rx_buf; + + switch (demod_type) { + case MXL_EAGLE_DEMOD_TYPE_ATSC: + mxl_status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_ATSC_STATUS_GET, + NULL, + 0, + rx_buf, + sizeof(struct MXL_EAGLE_ATSC_DEMOD_STATUS_T)); + if (!mxl_status) { + *snr = (u16)(atsc_status->snr_db_tenths / 10); + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = *snr; + } + break; + case MXL_EAGLE_DEMOD_TYPE_QAM: + mxl_status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_QAM_STATUS_GET, + NULL, + 0, + rx_buf, + sizeof(struct MXL_EAGLE_QAM_DEMOD_STATUS_T)); + if (!mxl_status) + *snr = (u16)(qam_status->snr_db_tenths / 10); + break; + case MXL_EAGLE_DEMOD_TYPE_OOB: + default: + break; + } + + if (mxl_status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", mxl_status); + return mxl_status; +} + +static int mxl692_read_ber_ucb(struct dvb_frontend *fe) +{ + struct mxl692_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T *atsc_errors; + enum MXL_EAGLE_DEMOD_TYPE_E demod_type = dev->demod_type; + int mxl_status = 0; + u32 utmp; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + atsc_errors = (struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T *)&rx_buf; + + switch (demod_type) { + case MXL_EAGLE_DEMOD_TYPE_ATSC: + mxl_status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_ATSC_ERROR_COUNTERS_GET, + NULL, + 0, + rx_buf, + sizeof(struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T)); + if (!mxl_status) { + if (atsc_errors->error_packets == 0) + utmp = 0; + else + utmp = ((atsc_errors->error_bytes / atsc_errors->error_packets) * + atsc_errors->total_packets); + /* ber */ + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += atsc_errors->error_bytes; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += utmp; + /* ucb */ + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += atsc_errors->error_packets; + + dev_dbg(&dev->i2c_client->dev, "%llu %llu\n", + c->post_bit_count.stat[0].uvalue, c->block_error.stat[0].uvalue); + } + break; + case MXL_EAGLE_DEMOD_TYPE_QAM: + case MXL_EAGLE_DEMOD_TYPE_OOB: + default: + break; + } + + if (mxl_status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", mxl_status); + + return mxl_status; +} + +static int mxl692_read_status(struct dvb_frontend *fe, + enum fe_status *status) +{ + struct mxl692_dev *dev = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; + struct MXL_EAGLE_ATSC_DEMOD_STATUS_T *atsc_status; + struct MXL_EAGLE_QAM_DEMOD_STATUS_T *qam_status; + enum MXL_EAGLE_DEMOD_TYPE_E demod_type = dev->demod_type; + int mxl_status = 0; + *status = 0; + + dev_dbg(&dev->i2c_client->dev, "\n"); + + atsc_status = (struct MXL_EAGLE_ATSC_DEMOD_STATUS_T *)&rx_buf; + qam_status = (struct MXL_EAGLE_QAM_DEMOD_STATUS_T *)&rx_buf; + + switch (demod_type) { + case MXL_EAGLE_DEMOD_TYPE_ATSC: + mxl_status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_ATSC_STATUS_GET, + NULL, + 0, + rx_buf, + sizeof(struct MXL_EAGLE_ATSC_DEMOD_STATUS_T)); + if (!mxl_status && atsc_status->atsc_lock) { + *status |= FE_HAS_SIGNAL; + *status |= FE_HAS_CARRIER; + *status |= FE_HAS_VITERBI; + *status |= FE_HAS_SYNC; + *status |= FE_HAS_LOCK; + + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = atsc_status->snr_db_tenths / 10; + } + break; + case MXL_EAGLE_DEMOD_TYPE_QAM: + mxl_status = mxl692_i2c_writeread(dev, + MXL_EAGLE_OPCODE_QAM_STATUS_GET, + NULL, + 0, + rx_buf, + sizeof(struct MXL_EAGLE_QAM_DEMOD_STATUS_T)); + if (!mxl_status && qam_status->qam_locked) { + *status |= FE_HAS_SIGNAL; + *status |= FE_HAS_CARRIER; + *status |= FE_HAS_VITERBI; + *status |= FE_HAS_SYNC; + *status |= FE_HAS_LOCK; + + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = qam_status->snr_db_tenths / 10; + } + break; + case MXL_EAGLE_DEMOD_TYPE_OOB: + default: + break; + } + + if ((*status & FE_HAS_LOCK) == 0) { + /* No lock, reset all statistics */ + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + return 0; + } + + if (mxl_status) + dev_dbg(&dev->i2c_client->dev, "err %d\n", mxl_status); + else + mxl_status = mxl692_read_ber_ucb(fe); + + return mxl_status; +} + +static const struct dvb_frontend_ops mxl692_ops = { + .delsys = { SYS_ATSC }, + .info = { + .name = "MaxLinear MxL692 VSB tuner-demodulator", + .frequency_min_hz = 54000000, + .frequency_max_hz = 858000000, + .frequency_stepsize_hz = 62500, + .caps = FE_CAN_8VSB + }, + + .init = mxl692_init, + .sleep = mxl692_sleep, + .set_frontend = mxl692_set_frontend, + .get_frontend = mxl692_get_frontend, + + .read_status = mxl692_read_status, + .read_snr = mxl692_read_snr, +}; + +static int mxl692_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct mxl692_config *config = client->dev.platform_data; + struct mxl692_dev *dev; + int ret = 0; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + dev_dbg(&client->dev, "kzalloc() failed\n"); + goto err; + } + + memcpy(&dev->fe.ops, &mxl692_ops, sizeof(struct dvb_frontend_ops)); + dev->fe.demodulator_priv = dev; + dev->i2c_client = client; + *config->fe = &dev->fe; + mutex_init(&dev->i2c_lock); + i2c_set_clientdata(client, dev); + + dev_info(&client->dev, "MaxLinear mxl692 successfully attached\n"); + + return 0; +err: + dev_dbg(&client->dev, "failed %d\n", ret); + return -ENODEV; +} + +static void mxl692_remove(struct i2c_client *client) +{ + struct mxl692_dev *dev = i2c_get_clientdata(client); + + dev->fe.demodulator_priv = NULL; + i2c_set_clientdata(client, NULL); + kfree(dev); +} + +static const struct i2c_device_id mxl692_id_table[] = { + {"mxl692", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, mxl692_id_table); + +static struct i2c_driver mxl692_driver = { + .driver = { + .name = "mxl692", + }, + .probe = mxl692_probe, + .remove = mxl692_remove, + .id_table = mxl692_id_table, +}; + +module_i2c_driver(mxl692_driver); + +MODULE_AUTHOR("Brad Love <brad@nextdimension.cc>"); +MODULE_DESCRIPTION("MaxLinear MxL692 demodulator/tuner driver"); +MODULE_FIRMWARE(MXL692_FIRMWARE); +MODULE_LICENSE("GPL"); |