--- /dev/null
+/*
+ * Support for LG2160 - ATSC/MH
+ *
+ * Copyright (C) 2010 Michael Krufky <mkrufky@linuxtv.org>
+ *
+ * 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 <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 - 1; 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:
+ 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;
+}
+
+/* ------------------------------------------------------------------------ */
+
+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;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lg216x_get_frontend(struct dvb_frontend *fe)
+{
+ struct lg216x_state *state = fe->demodulator_priv;
+ int ret;
+
+ lg_dbg("\n");
+
+ fe->dtv_property_cache.modulation = VSB_8;
+ fe->dtv_property_cache.frequency = state->current_frequency;
+ fe->dtv_property_cache.delivery_system = SYS_ATSCMH;
+
+ ret = lg216x_get_fic_version(state,
+ &fe->dtv_property_cache.atscmh_fic_ver);
+ if (lg_fail(ret))
+ goto fail;
+ if (state->fic_ver != fe->dtv_property_cache.atscmh_fic_ver) {
+ state->fic_ver = fe->dtv_property_cache.atscmh_fic_ver;
+
+#if 0
+ ret = lg2160_get_parade_id(state,
+ &fe->dtv_property_cache.atscmh_parade_id);
+ if (lg_fail(ret))
+ goto fail;
+/* #else */
+ fe->dtv_property_cache.atscmh_parade_id = state->parade_id;
+#endif
+ ret = lg216x_get_nog(state,
+ &fe->dtv_property_cache.atscmh_nog);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_tnog(state,
+ &fe->dtv_property_cache.atscmh_tnog);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_sgn(state,
+ &fe->dtv_property_cache.atscmh_sgn);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_prc(state,
+ &fe->dtv_property_cache.atscmh_prc);
+ if (lg_fail(ret))
+ goto fail;
+
+ ret = lg216x_get_rs_frame_mode(state,
+ (enum atscmh_rs_frame_mode *)
+ &fe->dtv_property_cache.atscmh_rs_frame_mode);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_rs_frame_ensemble(state,
+ (enum atscmh_rs_frame_ensemble *)
+ &fe->dtv_property_cache.atscmh_rs_frame_ensemble);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_rs_code_mode(state,
+ (enum atscmh_rs_code_mode *)
+ &fe->dtv_property_cache.atscmh_rs_code_mode_pri,
+ (enum atscmh_rs_code_mode *)
+ &fe->dtv_property_cache.atscmh_rs_code_mode_sec);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_sccc_block_mode(state,
+ (enum atscmh_sccc_block_mode *)
+ &fe->dtv_property_cache.atscmh_sccc_block_mode);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_get_sccc_code_mode(state,
+ (enum atscmh_sccc_code_mode *)
+ &fe->dtv_property_cache.atscmh_sccc_code_mode_a,
+ (enum atscmh_sccc_code_mode *)
+ &fe->dtv_property_cache.atscmh_sccc_code_mode_b,
+ (enum atscmh_sccc_code_mode *)
+ &fe->dtv_property_cache.atscmh_sccc_code_mode_c,
+ (enum atscmh_sccc_code_mode *)
+ &fe->dtv_property_cache.atscmh_sccc_code_mode_d);
+ if (lg_fail(ret))
+ goto fail;
+ }
+ ret = lg216x_read_fic_err_count(state,
+ (u8 *)&fe->dtv_property_cache.atscmh_fic_err);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_read_crc_err_count(state,
+ &fe->dtv_property_cache.atscmh_crc_err);
+ if (lg_fail(ret))
+ goto fail;
+ ret = lg216x_read_rs_err_count(state,
+ &fe->dtv_property_cache.atscmh_rs_err);
+ if (lg_fail(ret))
+ goto fail;
+
+ switch (state->cfg->lg_chip) {
+ case LG2160:
+ if (((fe->dtv_property_cache.atscmh_rs_err >= 240) &&
+ (fe->dtv_property_cache.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);
+fail:
+ return ret;
+}
+
+static int lg216x_get_property(struct dvb_frontend *fe,
+ struct dtv_property *tvp)
+{
+ return (DTV_ATSCMH_FIC_VER == tvp->cmd) ?
+ lg216x_get_frontend(fe) : 0;
+}
+
+
+static int lg2160_set_frontend(struct dvb_frontend *fe)
+{
+ struct lg216x_state *state = fe->demodulator_priv;
+ 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);
+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, fe_status_t *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)
+{
+ 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:
+ 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 struct dvb_frontend_ops lg2160_ops = {
+ .delsys = { SYS_ATSCMH },
+ .info = {
+ .name = "LG Electronics LG2160 ATSC/MH Frontend",
+ .type = FE_ATSC,
+ .frequency_min = 54000000,
+ .frequency_max = 858000000,
+ .frequency_stepsize = 62500,
+ },
+ .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
+#if 0
+ .init = lg216x_init,
+ .sleep = lg216x_sleep,
+#endif
+ .get_property = lg216x_get_property,
+
+ .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 struct dvb_frontend_ops lg2161_ops = {
+ .delsys = { SYS_ATSCMH },
+ .info = {
+ .name = "LG Electronics LG2161 ATSC/MH Frontend",
+ .type = FE_ATSC,
+ .frequency_min = 54000000,
+ .frequency_max = 858000000,
+ .frequency_stepsize = 62500,
+ },
+ .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
+#if 0
+ .init = lg216x_init,
+ .sleep = lg216x_sleep,
+#endif
+ .get_property = lg216x_get_property,
+
+ .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 == NULL)
+ goto fail;
+
+ 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");
+ /* fall-thru */
+ 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;
+fail:
+ lg_warn("unable to detect LG216x hardware\n");
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL(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");
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
projects / openwrt / staging / blogic.git / commitdiff