diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb-frontends/lg2160.c | 1434 |
1 files changed, 1434 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/lg2160.c b/drivers/media/dvb-frontends/lg2160.c new file mode 100644 index 000000000..fe700aa56 --- /dev/null +++ b/drivers/media/dvb-frontends/lg2160.c @@ -0,0 +1,1434 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Support for LG2160 - ATSC/MH + * + * Copyright (C) 2010 Michael Krufky <mkrufky@linuxtv.org> + */ + +#include <linux/jiffies.h> +#include <linux/dvb/frontend.h> +#include "lg2160.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))"); + +#define DBG_INFO 1 +#define DBG_REG 2 + +#define lg_printk(kern, fmt, arg...) \ + printk(kern "%s: " fmt, __func__, ##arg) + +#define lg_info(fmt, arg...) printk(KERN_INFO "lg2160: " fmt, ##arg) +#define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg) +#define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg) +#define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \ + lg_printk(KERN_DEBUG, fmt, ##arg) +#define lg_reg(fmt, arg...) if (debug & DBG_REG) \ + lg_printk(KERN_DEBUG, fmt, ##arg) + +#define lg_fail(ret) \ +({ \ + int __ret; \ + __ret = (ret < 0); \ + if (__ret) \ + lg_err("error %d on line %d\n", ret, __LINE__); \ + __ret; \ +}) + +struct lg216x_state { + struct i2c_adapter *i2c_adap; + const struct lg2160_config *cfg; + + struct dvb_frontend frontend; + + u32 current_frequency; + u8 parade_id; + u8 fic_ver; + unsigned int last_reset; +}; + +/* ------------------------------------------------------------------------ */ + +static int lg216x_write_reg(struct lg216x_state *state, u16 reg, u8 val) +{ + int ret; + u8 buf[] = { reg >> 8, reg & 0xff, val }; + struct i2c_msg msg = { + .addr = state->cfg->i2c_addr, .flags = 0, + .buf = buf, .len = 3, + }; + + lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val); + + ret = i2c_transfer(state->i2c_adap, &msg, 1); + + if (ret != 1) { + lg_err("error (addr %02x %02x <- %02x, err = %i)\n", + msg.buf[0], msg.buf[1], msg.buf[2], ret); + if (ret < 0) + return ret; + else + return -EREMOTEIO; + } + return 0; +} + +static int lg216x_read_reg(struct lg216x_state *state, u16 reg, u8 *val) +{ + int ret; + u8 reg_buf[] = { reg >> 8, reg & 0xff }; + struct i2c_msg msg[] = { + { .addr = state->cfg->i2c_addr, + .flags = 0, .buf = reg_buf, .len = 2 }, + { .addr = state->cfg->i2c_addr, + .flags = I2C_M_RD, .buf = val, .len = 1 }, + }; + + lg_reg("reg: 0x%04x\n", reg); + + ret = i2c_transfer(state->i2c_adap, msg, 2); + + if (ret != 2) { + lg_err("error (addr %02x reg %04x error (ret == %i)\n", + state->cfg->i2c_addr, reg, ret); + if (ret < 0) + return ret; + else + return -EREMOTEIO; + } + return 0; +} + +struct lg216x_reg { + u16 reg; + u8 val; +}; + +static int lg216x_write_regs(struct lg216x_state *state, + struct lg216x_reg *regs, int len) +{ + int i, ret; + + lg_reg("writing %d registers...\n", len); + + for (i = 0; i < len; i++) { + ret = lg216x_write_reg(state, regs[i].reg, regs[i].val); + if (lg_fail(ret)) + return ret; + } + return 0; +} + +static int lg216x_set_reg_bit(struct lg216x_state *state, + u16 reg, int bit, int onoff) +{ + u8 val; + int ret; + + lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff); + + ret = lg216x_read_reg(state, reg, &val); + if (lg_fail(ret)) + goto fail; + + val &= ~(1 << bit); + val |= (onoff & 1) << bit; + + ret = lg216x_write_reg(state, reg, val); + lg_fail(ret); +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg216x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct lg216x_state *state = fe->demodulator_priv; + int ret; + + if (state->cfg->deny_i2c_rptr) + return 0; + + lg_dbg("(%d)\n", enable); + + ret = lg216x_set_reg_bit(state, 0x0000, 0, enable ? 0 : 1); + + msleep(1); + + return ret; +} + +static int lg216x_soft_reset(struct lg216x_state *state) +{ + int ret; + + lg_dbg("\n"); + + ret = lg216x_write_reg(state, 0x0002, 0x00); + if (lg_fail(ret)) + goto fail; + + msleep(20); + ret = lg216x_write_reg(state, 0x0002, 0x01); + if (lg_fail(ret)) + goto fail; + + state->last_reset = jiffies_to_msecs(jiffies); +fail: + return ret; +} + +static int lg216x_initialize(struct lg216x_state *state) +{ + int ret; + + static struct lg216x_reg lg2160_init[] = { +#if 0 + { .reg = 0x0015, .val = 0xe6 }, +#else + { .reg = 0x0015, .val = 0xf7 }, + { .reg = 0x001b, .val = 0x52 }, + { .reg = 0x0208, .val = 0x00 }, + { .reg = 0x0209, .val = 0x82 }, + { .reg = 0x0210, .val = 0xf9 }, + { .reg = 0x020a, .val = 0x00 }, + { .reg = 0x020b, .val = 0x82 }, + { .reg = 0x020d, .val = 0x28 }, + { .reg = 0x020f, .val = 0x14 }, +#endif + }; + + static struct lg216x_reg lg2161_init[] = { + { .reg = 0x0000, .val = 0x41 }, + { .reg = 0x0001, .val = 0xfb }, + { .reg = 0x0216, .val = 0x00 }, + { .reg = 0x0219, .val = 0x00 }, + { .reg = 0x021b, .val = 0x55 }, + { .reg = 0x0606, .val = 0x0a }, + }; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_write_regs(state, + lg2160_init, ARRAY_SIZE(lg2160_init)); + break; + case LG2161: + ret = lg216x_write_regs(state, + lg2161_init, ARRAY_SIZE(lg2161_init)); + break; + default: + ret = -EINVAL; + break; + } + if (lg_fail(ret)) + goto fail; + + ret = lg216x_soft_reset(state); + lg_fail(ret); +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg216x_set_if(struct lg216x_state *state) +{ + u8 val; + int ret; + + lg_dbg("%d KHz\n", state->cfg->if_khz); + + ret = lg216x_read_reg(state, 0x0132, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xfb; + val |= (0 == state->cfg->if_khz) ? 0x04 : 0x00; + + ret = lg216x_write_reg(state, 0x0132, val); + lg_fail(ret); + + /* if NOT zero IF, 6 MHz is the default */ +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg2160_agc_fix(struct lg216x_state *state, + int if_agc_fix, int rf_agc_fix) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0100, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xf3; + val |= (if_agc_fix) ? 0x08 : 0x00; + val |= (rf_agc_fix) ? 0x04 : 0x00; + + ret = lg216x_write_reg(state, 0x0100, val); + lg_fail(ret); +fail: + return ret; +} + +#if 0 +static int lg2160_agc_freeze(struct lg216x_state *state, + int if_agc_freeze, int rf_agc_freeze) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0100, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xcf; + val |= (if_agc_freeze) ? 0x20 : 0x00; + val |= (rf_agc_freeze) ? 0x10 : 0x00; + + ret = lg216x_write_reg(state, 0x0100, val); + lg_fail(ret); +fail: + return ret; +} +#endif + +static int lg2160_agc_polarity(struct lg216x_state *state, + int if_agc_polarity, int rf_agc_polarity) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0100, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xfc; + val |= (if_agc_polarity) ? 0x02 : 0x00; + val |= (rf_agc_polarity) ? 0x01 : 0x00; + + ret = lg216x_write_reg(state, 0x0100, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg2160_tuner_pwr_save_polarity(struct lg216x_state *state, + int polarity) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0008, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xfe; + val |= (polarity) ? 0x01 : 0x00; + + ret = lg216x_write_reg(state, 0x0008, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg2160_spectrum_polarity(struct lg216x_state *state, + int inverted) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0132, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xfd; + val |= (inverted) ? 0x02 : 0x00; + + ret = lg216x_write_reg(state, 0x0132, val); + lg_fail(ret); +fail: + return lg216x_soft_reset(state); +} + +static int lg2160_tuner_pwr_save(struct lg216x_state *state, int onoff) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0007, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xbf; + val |= (onoff) ? 0x40 : 0x00; + + ret = lg216x_write_reg(state, 0x0007, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg216x_set_parade(struct lg216x_state *state, int id) +{ + int ret; + + ret = lg216x_write_reg(state, 0x013e, id & 0x7f); + if (lg_fail(ret)) + goto fail; + + state->parade_id = id & 0x7f; +fail: + return ret; +} + +static int lg216x_set_ensemble(struct lg216x_state *state, int id) +{ + int ret; + u16 reg; + u8 val; + + switch (state->cfg->lg_chip) { + case LG2160: + reg = 0x0400; + break; + case LG2161: + default: + reg = 0x0500; + break; + } + + ret = lg216x_read_reg(state, reg, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xfe; + val |= (id) ? 0x01 : 0x00; + + ret = lg216x_write_reg(state, reg, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg2160_set_spi_clock(struct lg216x_state *state) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0014, &val); + if (lg_fail(ret)) + goto fail; + + val &= 0xf3; + val |= (state->cfg->spi_clock << 2); + + ret = lg216x_write_reg(state, 0x0014, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg2161_set_output_interface(struct lg216x_state *state) +{ + u8 val; + int ret; + + ret = lg216x_read_reg(state, 0x0014, &val); + if (lg_fail(ret)) + goto fail; + + val &= ~0x07; + val |= state->cfg->output_if; /* FIXME: needs sanity check */ + + ret = lg216x_write_reg(state, 0x0014, val); + lg_fail(ret); +fail: + return ret; +} + +static int lg216x_enable_fic(struct lg216x_state *state, int onoff) +{ + int ret; + + ret = lg216x_write_reg(state, 0x0017, 0x23); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_write_reg(state, 0x0016, 0xfc); + if (lg_fail(ret)) + goto fail; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_write_reg(state, 0x0016, + 0xfc | ((onoff) ? 0x02 : 0x00)); + break; + case LG2161: + ret = lg216x_write_reg(state, 0x0016, (onoff) ? 0x10 : 0x00); + break; + } + if (lg_fail(ret)) + goto fail; + + ret = lg216x_initialize(state); + if (lg_fail(ret)) + goto fail; + + if (onoff) { + ret = lg216x_write_reg(state, 0x0017, 0x03); + lg_fail(ret); + } +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg216x_get_fic_version(struct lg216x_state *state, u8 *ficver) +{ + u8 val; + int ret; + + *ficver = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0128, &val); + if (lg_fail(ret)) + goto fail; + + *ficver = (val >> 3) & 0x1f; +fail: + return ret; +} + +#if 0 +static int lg2160_get_parade_id(struct lg216x_state *state, u8 *id) +{ + u8 val; + int ret; + + *id = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0123, &val); + if (lg_fail(ret)) + goto fail; + + *id = val & 0x7f; +fail: + return ret; +} +#endif + +static int lg216x_get_nog(struct lg216x_state *state, u8 *nog) +{ + u8 val; + int ret; + + *nog = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0124, &val); + if (lg_fail(ret)) + goto fail; + + *nog = ((val >> 4) & 0x07) + 1; +fail: + return ret; +} + +static int lg216x_get_tnog(struct lg216x_state *state, u8 *tnog) +{ + u8 val; + int ret; + + *tnog = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0125, &val); + if (lg_fail(ret)) + goto fail; + + *tnog = val & 0x1f; +fail: + return ret; +} + +static int lg216x_get_sgn(struct lg216x_state *state, u8 *sgn) +{ + u8 val; + int ret; + + *sgn = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0124, &val); + if (lg_fail(ret)) + goto fail; + + *sgn = val & 0x0f; +fail: + return ret; +} + +static int lg216x_get_prc(struct lg216x_state *state, u8 *prc) +{ + u8 val; + int ret; + + *prc = 0xff; /* invalid value */ + + ret = lg216x_read_reg(state, 0x0125, &val); + if (lg_fail(ret)) + goto fail; + + *prc = ((val >> 5) & 0x07) + 1; +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg216x_get_rs_frame_mode(struct lg216x_state *state, + enum atscmh_rs_frame_mode *rs_framemode) +{ + u8 val; + int ret; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0410, &val); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x0513, &val); + break; + default: + ret = -EINVAL; + } + if (lg_fail(ret)) + goto fail; + + switch ((val >> 4) & 0x03) { +#if 1 + default: +#endif + case 0x00: + *rs_framemode = ATSCMH_RSFRAME_PRI_ONLY; + break; + case 0x01: + *rs_framemode = ATSCMH_RSFRAME_PRI_SEC; + break; +#if 0 + default: + *rs_framemode = ATSCMH_RSFRAME_RES; + break; +#endif + } +fail: + return ret; +} + +static +int lg216x_get_rs_frame_ensemble(struct lg216x_state *state, + enum atscmh_rs_frame_ensemble *rs_frame_ens) +{ + u8 val; + int ret; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0400, &val); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x0500, &val); + break; + default: + ret = -EINVAL; + } + if (lg_fail(ret)) + goto fail; + + val &= 0x01; + *rs_frame_ens = (enum atscmh_rs_frame_ensemble) val; +fail: + return ret; +} + +static int lg216x_get_rs_code_mode(struct lg216x_state *state, + enum atscmh_rs_code_mode *rs_code_pri, + enum atscmh_rs_code_mode *rs_code_sec) +{ + u8 val; + int ret; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0410, &val); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x0513, &val); + break; + default: + ret = -EINVAL; + } + if (lg_fail(ret)) + goto fail; + + *rs_code_pri = (enum atscmh_rs_code_mode) ((val >> 2) & 0x03); + *rs_code_sec = (enum atscmh_rs_code_mode) (val & 0x03); +fail: + return ret; +} + +static int lg216x_get_sccc_block_mode(struct lg216x_state *state, + enum atscmh_sccc_block_mode *sccc_block) +{ + u8 val; + int ret; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0315, &val); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x0511, &val); + break; + default: + ret = -EINVAL; + } + if (lg_fail(ret)) + goto fail; + + switch (val & 0x03) { + case 0x00: + *sccc_block = ATSCMH_SCCC_BLK_SEP; + break; + case 0x01: + *sccc_block = ATSCMH_SCCC_BLK_COMB; + break; + default: + *sccc_block = ATSCMH_SCCC_BLK_RES; + break; + } +fail: + return ret; +} + +static int lg216x_get_sccc_code_mode(struct lg216x_state *state, + enum atscmh_sccc_code_mode *mode_a, + enum atscmh_sccc_code_mode *mode_b, + enum atscmh_sccc_code_mode *mode_c, + enum atscmh_sccc_code_mode *mode_d) +{ + u8 val; + int ret; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0316, &val); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x0512, &val); + break; + default: + ret = -EINVAL; + } + if (lg_fail(ret)) + goto fail; + + switch ((val >> 6) & 0x03) { + case 0x00: + *mode_a = ATSCMH_SCCC_CODE_HLF; + break; + case 0x01: + *mode_a = ATSCMH_SCCC_CODE_QTR; + break; + default: + *mode_a = ATSCMH_SCCC_CODE_RES; + break; + } + + switch ((val >> 4) & 0x03) { + case 0x00: + *mode_b = ATSCMH_SCCC_CODE_HLF; + break; + case 0x01: + *mode_b = ATSCMH_SCCC_CODE_QTR; + break; + default: + *mode_b = ATSCMH_SCCC_CODE_RES; + break; + } + + switch ((val >> 2) & 0x03) { + case 0x00: + *mode_c = ATSCMH_SCCC_CODE_HLF; + break; + case 0x01: + *mode_c = ATSCMH_SCCC_CODE_QTR; + break; + default: + *mode_c = ATSCMH_SCCC_CODE_RES; + break; + } + + switch (val & 0x03) { + case 0x00: + *mode_d = ATSCMH_SCCC_CODE_HLF; + break; + case 0x01: + *mode_d = ATSCMH_SCCC_CODE_QTR; + break; + default: + *mode_d = ATSCMH_SCCC_CODE_RES; + break; + } +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +#if 0 +static int lg216x_read_fic_err_count(struct lg216x_state *state, u8 *err) +{ + u8 fic_err; + int ret; + + *err = 0; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg216x_read_reg(state, 0x0012, &fic_err); + break; + case LG2161: + ret = lg216x_read_reg(state, 0x001e, &fic_err); + break; + } + if (lg_fail(ret)) + goto fail; + + *err = fic_err; +fail: + return ret; +} + +static int lg2160_read_crc_err_count(struct lg216x_state *state, u16 *err) +{ + u8 crc_err1, crc_err2; + int ret; + + *err = 0; + + ret = lg216x_read_reg(state, 0x0411, &crc_err1); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_read_reg(state, 0x0412, &crc_err2); + if (lg_fail(ret)) + goto fail; + + *err = (u16)(((crc_err2 & 0x0f) << 8) | crc_err1); +fail: + return ret; +} + +static int lg2161_read_crc_err_count(struct lg216x_state *state, u16 *err) +{ + u8 crc_err; + int ret; + + *err = 0; + + ret = lg216x_read_reg(state, 0x0612, &crc_err); + if (lg_fail(ret)) + goto fail; + + *err = (u16)crc_err; +fail: + return ret; +} + +static int lg216x_read_crc_err_count(struct lg216x_state *state, u16 *err) +{ + int ret; + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg2160_read_crc_err_count(state, err); + break; + case LG2161: + ret = lg2161_read_crc_err_count(state, err); + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int lg2160_read_rs_err_count(struct lg216x_state *state, u16 *err) +{ + u8 rs_err1, rs_err2; + int ret; + + *err = 0; + + ret = lg216x_read_reg(state, 0x0413, &rs_err1); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_read_reg(state, 0x0414, &rs_err2); + if (lg_fail(ret)) + goto fail; + + *err = (u16)(((rs_err2 & 0x0f) << 8) | rs_err1); +fail: + return ret; +} + +static int lg2161_read_rs_err_count(struct lg216x_state *state, u16 *err) +{ + u8 rs_err1, rs_err2; + int ret; + + *err = 0; + + ret = lg216x_read_reg(state, 0x0613, &rs_err1); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_read_reg(state, 0x0614, &rs_err2); + if (lg_fail(ret)) + goto fail; + + *err = (u16)((rs_err1 << 8) | rs_err2); +fail: + return ret; +} + +static int lg216x_read_rs_err_count(struct lg216x_state *state, u16 *err) +{ + int ret; + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg2160_read_rs_err_count(state, err); + break; + case LG2161: + ret = lg2161_read_rs_err_count(state, err); + break; + default: + ret = -EINVAL; + break; + } + return ret; +} +#endif + +/* ------------------------------------------------------------------------ */ + +static int lg216x_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *c) +{ + struct lg216x_state *state = fe->demodulator_priv; + int ret; + + lg_dbg("\n"); + + c->modulation = VSB_8; + c->frequency = state->current_frequency; + c->delivery_system = SYS_ATSCMH; + + ret = lg216x_get_fic_version(state, + &c->atscmh_fic_ver); + if (lg_fail(ret)) + goto fail; + if (state->fic_ver != c->atscmh_fic_ver) { + state->fic_ver = c->atscmh_fic_ver; + +#if 0 + ret = lg2160_get_parade_id(state, + &c->atscmh_parade_id); + if (lg_fail(ret)) + goto fail; +/* #else */ + c->atscmh_parade_id = state->parade_id; +#endif + ret = lg216x_get_nog(state, + &c->atscmh_nog); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_tnog(state, + &c->atscmh_tnog); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_sgn(state, + &c->atscmh_sgn); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_prc(state, + &c->atscmh_prc); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_get_rs_frame_mode(state, + (enum atscmh_rs_frame_mode *) + &c->atscmh_rs_frame_mode); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_rs_frame_ensemble(state, + (enum atscmh_rs_frame_ensemble *) + &c->atscmh_rs_frame_ensemble); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_rs_code_mode(state, + (enum atscmh_rs_code_mode *) + &c->atscmh_rs_code_mode_pri, + (enum atscmh_rs_code_mode *) + &c->atscmh_rs_code_mode_sec); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_sccc_block_mode(state, + (enum atscmh_sccc_block_mode *) + &c->atscmh_sccc_block_mode); + if (lg_fail(ret)) + goto fail; + ret = lg216x_get_sccc_code_mode(state, + (enum atscmh_sccc_code_mode *) + &c->atscmh_sccc_code_mode_a, + (enum atscmh_sccc_code_mode *) + &c->atscmh_sccc_code_mode_b, + (enum atscmh_sccc_code_mode *) + &c->atscmh_sccc_code_mode_c, + (enum atscmh_sccc_code_mode *) + &c->atscmh_sccc_code_mode_d); + if (lg_fail(ret)) + goto fail; + } +#if 0 + ret = lg216x_read_fic_err_count(state, + (u8 *)&c->atscmh_fic_err); + if (lg_fail(ret)) + goto fail; + ret = lg216x_read_crc_err_count(state, + &c->atscmh_crc_err); + if (lg_fail(ret)) + goto fail; + ret = lg216x_read_rs_err_count(state, + &c->atscmh_rs_err); + if (lg_fail(ret)) + goto fail; + + switch (state->cfg->lg_chip) { + case LG2160: + if (((c->atscmh_rs_err >= 240) && + (c->atscmh_crc_err >= 240)) && + ((jiffies_to_msecs(jiffies) - state->last_reset) > 6000)) + ret = lg216x_soft_reset(state); + break; + case LG2161: + /* no fix needed here (as far as we know) */ + ret = 0; + break; + } + lg_fail(ret); +#endif +fail: + return ret; +} + +static int lg2160_set_frontend(struct dvb_frontend *fe) +{ + struct lg216x_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret; + + lg_dbg("(%d)\n", fe->dtv_property_cache.frequency); + + if (fe->ops.tuner_ops.set_params) { + ret = fe->ops.tuner_ops.set_params(fe); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + if (lg_fail(ret)) + goto fail; + state->current_frequency = fe->dtv_property_cache.frequency; + } + + ret = lg2160_agc_fix(state, 0, 0); + if (lg_fail(ret)) + goto fail; + ret = lg2160_agc_polarity(state, 0, 0); + if (lg_fail(ret)) + goto fail; + ret = lg2160_tuner_pwr_save_polarity(state, 1); + if (lg_fail(ret)) + goto fail; + ret = lg216x_set_if(state); + if (lg_fail(ret)) + goto fail; + ret = lg2160_spectrum_polarity(state, state->cfg->spectral_inversion); + if (lg_fail(ret)) + goto fail; + + /* be tuned before this point */ + ret = lg216x_soft_reset(state); + if (lg_fail(ret)) + goto fail; + + ret = lg2160_tuner_pwr_save(state, 0); + if (lg_fail(ret)) + goto fail; + + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg2160_set_spi_clock(state); + if (lg_fail(ret)) + goto fail; + break; + case LG2161: + ret = lg2161_set_output_interface(state); + if (lg_fail(ret)) + goto fail; + break; + } + + ret = lg216x_set_parade(state, fe->dtv_property_cache.atscmh_parade_id); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_set_ensemble(state, + fe->dtv_property_cache.atscmh_rs_frame_ensemble); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_initialize(state); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_enable_fic(state, 1); + lg_fail(ret); + + lg216x_get_frontend(fe, c); +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg2160_read_lock_status(struct lg216x_state *state, + int *acq_lock, int *sync_lock) +{ + u8 val; + int ret; + + *acq_lock = 0; + *sync_lock = 0; + + ret = lg216x_read_reg(state, 0x011b, &val); + if (lg_fail(ret)) + goto fail; + + *sync_lock = (val & 0x20) ? 0 : 1; + *acq_lock = (val & 0x40) ? 0 : 1; +fail: + return ret; +} + +#ifdef USE_LG2161_LOCK_BITS +static int lg2161_read_lock_status(struct lg216x_state *state, + int *acq_lock, int *sync_lock) +{ + u8 val; + int ret; + + *acq_lock = 0; + *sync_lock = 0; + + ret = lg216x_read_reg(state, 0x0304, &val); + if (lg_fail(ret)) + goto fail; + + *sync_lock = (val & 0x80) ? 0 : 1; + + ret = lg216x_read_reg(state, 0x011b, &val); + if (lg_fail(ret)) + goto fail; + + *acq_lock = (val & 0x40) ? 0 : 1; +fail: + return ret; +} +#endif + +static int lg216x_read_lock_status(struct lg216x_state *state, + int *acq_lock, int *sync_lock) +{ +#ifdef USE_LG2161_LOCK_BITS + int ret; + switch (state->cfg->lg_chip) { + case LG2160: + ret = lg2160_read_lock_status(state, acq_lock, sync_lock); + break; + case LG2161: + ret = lg2161_read_lock_status(state, acq_lock, sync_lock); + break; + default: + ret = -EINVAL; + break; + } + return ret; +#else + return lg2160_read_lock_status(state, acq_lock, sync_lock); +#endif +} + +static int lg216x_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct lg216x_state *state = fe->demodulator_priv; + int ret, acq_lock, sync_lock; + + *status = 0; + + ret = lg216x_read_lock_status(state, &acq_lock, &sync_lock); + if (lg_fail(ret)) + goto fail; + + lg_dbg("%s%s\n", + acq_lock ? "SIGNALEXIST " : "", + sync_lock ? "SYNCLOCK" : ""); + + if (acq_lock) + *status |= FE_HAS_SIGNAL; + if (sync_lock) + *status |= FE_HAS_SYNC; + + if (*status) + *status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK; + +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lg2160_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct lg216x_state *state = fe->demodulator_priv; + u8 snr1, snr2; + int ret; + + *snr = 0; + + ret = lg216x_read_reg(state, 0x0202, &snr1); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_read_reg(state, 0x0203, &snr2); + if (lg_fail(ret)) + goto fail; + + if ((snr1 == 0xba) || (snr2 == 0xdf)) + *snr = 0; + else +#if 1 + *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 >> 4); +#else /* BCD */ + *snr = (snr2 | (snr1 << 8)); +#endif +fail: + return ret; +} + +static int lg2161_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct lg216x_state *state = fe->demodulator_priv; + u8 snr1, snr2; + int ret; + + *snr = 0; + + ret = lg216x_read_reg(state, 0x0302, &snr1); + if (lg_fail(ret)) + goto fail; + + ret = lg216x_read_reg(state, 0x0303, &snr2); + if (lg_fail(ret)) + goto fail; + + if ((snr1 == 0xba) || (snr2 == 0xfd)) + *snr = 0; + else + + *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 & 0x0f); +fail: + return ret; +} + +static int lg216x_read_signal_strength(struct dvb_frontend *fe, + u16 *strength) +{ +#if 0 + /* borrowed from lgdt330x.c + * + * Calculate strength from SNR up to 35dB + * Even though the SNR can go higher than 35dB, + * there is some comfort factor in having a range of + * strong signals that can show at 100% + */ + struct lg216x_state *state = fe->demodulator_priv; + u16 snr; + int ret; +#endif + *strength = 0; +#if 0 + ret = fe->ops.read_snr(fe, &snr); + if (lg_fail(ret)) + goto fail; + /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */ + /* scale the range 0 - 35*2^24 into 0 - 65535 */ + if (state->snr >= 8960 * 0x10000) + *strength = 0xffff; + else + *strength = state->snr / 8960; +fail: + return ret; +#else + return 0; +#endif +} + +/* ------------------------------------------------------------------------ */ + +static int lg216x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ +#if 0 + struct lg216x_state *state = fe->demodulator_priv; + int ret; + + ret = lg216x_read_rs_err_count(state, + &fe->dtv_property_cache.atscmh_rs_err); + if (lg_fail(ret)) + goto fail; + + *ucblocks = fe->dtv_property_cache.atscmh_rs_err; +fail: +#else + *ucblocks = 0; +#endif + return 0; +} + +static int lg216x_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings + *fe_tune_settings) +{ + fe_tune_settings->min_delay_ms = 500; + lg_dbg("\n"); + return 0; +} + +static void lg216x_release(struct dvb_frontend *fe) +{ + struct lg216x_state *state = fe->demodulator_priv; + lg_dbg("\n"); + kfree(state); +} + +static const struct dvb_frontend_ops lg2160_ops = { + .delsys = { SYS_ATSCMH }, + .info = { + .name = "LG Electronics LG2160 ATSC/MH Frontend", + .frequency_min_hz = 54 * MHz, + .frequency_max_hz = 858 * MHz, + .frequency_stepsize_hz = 62500, + }, + .i2c_gate_ctrl = lg216x_i2c_gate_ctrl, +#if 0 + .init = lg216x_init, + .sleep = lg216x_sleep, +#endif + .set_frontend = lg2160_set_frontend, + .get_frontend = lg216x_get_frontend, + .get_tune_settings = lg216x_get_tune_settings, + .read_status = lg216x_read_status, +#if 0 + .read_ber = lg216x_read_ber, +#endif + .read_signal_strength = lg216x_read_signal_strength, + .read_snr = lg2160_read_snr, + .read_ucblocks = lg216x_read_ucblocks, + .release = lg216x_release, +}; + +static const struct dvb_frontend_ops lg2161_ops = { + .delsys = { SYS_ATSCMH }, + .info = { + .name = "LG Electronics LG2161 ATSC/MH Frontend", + .frequency_min_hz = 54 * MHz, + .frequency_max_hz = 858 * MHz, + .frequency_stepsize_hz = 62500, + }, + .i2c_gate_ctrl = lg216x_i2c_gate_ctrl, +#if 0 + .init = lg216x_init, + .sleep = lg216x_sleep, +#endif + .set_frontend = lg2160_set_frontend, + .get_frontend = lg216x_get_frontend, + .get_tune_settings = lg216x_get_tune_settings, + .read_status = lg216x_read_status, +#if 0 + .read_ber = lg216x_read_ber, +#endif + .read_signal_strength = lg216x_read_signal_strength, + .read_snr = lg2161_read_snr, + .read_ucblocks = lg216x_read_ucblocks, + .release = lg216x_release, +}; + +struct dvb_frontend *lg2160_attach(const struct lg2160_config *config, + struct i2c_adapter *i2c_adap) +{ + struct lg216x_state *state = NULL; + + lg_dbg("(%d-%04x)\n", + i2c_adap ? i2c_adapter_id(i2c_adap) : 0, + config ? config->i2c_addr : 0); + + state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL); + if (!state) + return NULL; + + state->cfg = config; + state->i2c_adap = i2c_adap; + state->fic_ver = 0xff; + state->parade_id = 0xff; + + switch (config->lg_chip) { + default: + lg_warn("invalid chip requested, defaulting to LG2160"); + fallthrough; + case LG2160: + memcpy(&state->frontend.ops, &lg2160_ops, + sizeof(struct dvb_frontend_ops)); + break; + case LG2161: + memcpy(&state->frontend.ops, &lg2161_ops, + sizeof(struct dvb_frontend_ops)); + break; + } + + state->frontend.demodulator_priv = state; + state->current_frequency = -1; + /* parade 1 by default */ + state->frontend.dtv_property_cache.atscmh_parade_id = 1; + + return &state->frontend; +} +EXPORT_SYMBOL_GPL(lg2160_attach); + +MODULE_DESCRIPTION("LG Electronics LG216x ATSC/MH Demodulator Driver"); +MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.3"); |