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Diffstat (limited to 'drivers/media/dvb-frontends/lgdt3306a.c')
-rw-r--r--drivers/media/dvb-frontends/lgdt3306a.c2262
1 files changed, 2262 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/lgdt3306a.c b/drivers/media/dvb-frontends/lgdt3306a.c
new file mode 100644
index 0000000000..2638875924
--- /dev/null
+++ b/drivers/media/dvb-frontends/lgdt3306a.c
@@ -0,0 +1,2262 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Support for LGDT3306A - 8VSB/QAM-B
+ *
+ * Copyright (C) 2013 Fred Richter <frichter@hauppauge.com>
+ * - driver structure based on lgdt3305.[ch] by Michael Krufky
+ * - code based on LG3306_V0.35 API by LG Electronics Inc.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <asm/div64.h>
+#include <linux/kernel.h>
+#include <linux/dvb/frontend.h>
+#include <linux/int_log.h>
+#include "lgdt3306a.h"
+#include <linux/i2c-mux.h>
+
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
+
+/*
+ * Older drivers treated QAM64 and QAM256 the same; that is the HW always
+ * used "Auto" mode during detection. Setting "forced_manual"=1 allows
+ * the user to treat these modes as separate. For backwards compatibility,
+ * it's off by default. QAM_AUTO can now be specified to achive that
+ * effect even if "forced_manual"=1
+ */
+static int forced_manual;
+module_param(forced_manual, int, 0644);
+MODULE_PARM_DESC(forced_manual, "if set, QAM64 and QAM256 will only lock to modulation specified");
+
+#define DBG_INFO 1
+#define DBG_REG 2
+#define DBG_DUMP 4 /* FGR - comment out to remove dump code */
+
+#define lg_debug(fmt, arg...) \
+ printk(KERN_DEBUG pr_fmt(fmt), ## arg)
+
+#define dbg_info(fmt, arg...) \
+ do { \
+ if (debug & DBG_INFO) \
+ lg_debug(fmt, ## arg); \
+ } while (0)
+
+#define dbg_reg(fmt, arg...) \
+ do { \
+ if (debug & DBG_REG) \
+ lg_debug(fmt, ## arg); \
+ } while (0)
+
+#define lg_chkerr(ret) \
+({ \
+ int __ret; \
+ __ret = (ret < 0); \
+ if (__ret) \
+ pr_err("error %d on line %d\n", ret, __LINE__); \
+ __ret; \
+})
+
+struct lgdt3306a_state {
+ struct i2c_adapter *i2c_adap;
+ const struct lgdt3306a_config *cfg;
+
+ struct dvb_frontend frontend;
+
+ enum fe_modulation current_modulation;
+ u32 current_frequency;
+ u32 snr;
+
+ struct i2c_mux_core *muxc;
+};
+
+/*
+ * LG3306A Register Usage
+ * (LG does not really name the registers, so this code does not either)
+ *
+ * 0000 -> 00FF Common control and status
+ * 1000 -> 10FF Synchronizer control and status
+ * 1F00 -> 1FFF Smart Antenna control and status
+ * 2100 -> 21FF VSB Equalizer control and status
+ * 2800 -> 28FF QAM Equalizer control and status
+ * 3000 -> 30FF FEC control and status
+ */
+
+enum lgdt3306a_lock_status {
+ LG3306_UNLOCK = 0x00,
+ LG3306_LOCK = 0x01,
+ LG3306_UNKNOWN_LOCK = 0xff
+};
+
+enum lgdt3306a_neverlock_status {
+ LG3306_NL_INIT = 0x00,
+ LG3306_NL_PROCESS = 0x01,
+ LG3306_NL_LOCK = 0x02,
+ LG3306_NL_FAIL = 0x03,
+ LG3306_NL_UNKNOWN = 0xff
+};
+
+enum lgdt3306a_modulation {
+ LG3306_VSB = 0x00,
+ LG3306_QAM64 = 0x01,
+ LG3306_QAM256 = 0x02,
+ LG3306_UNKNOWN_MODE = 0xff
+};
+
+enum lgdt3306a_lock_check {
+ LG3306_SYNC_LOCK,
+ LG3306_FEC_LOCK,
+ LG3306_TR_LOCK,
+ LG3306_AGC_LOCK,
+};
+
+
+#ifdef DBG_DUMP
+static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state);
+static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state);
+#endif
+
+
+static int lgdt3306a_write_reg(struct lgdt3306a_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,
+ };
+
+ dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
+
+ ret = i2c_transfer(state->i2c_adap, &msg, 1);
+
+ if (ret != 1) {
+ pr_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 lgdt3306a_read_reg(struct lgdt3306a_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 },
+ };
+
+ ret = i2c_transfer(state->i2c_adap, msg, 2);
+
+ if (ret != 2) {
+ pr_err("error (addr %02x reg %04x error (ret == %i)\n",
+ state->cfg->i2c_addr, reg, ret);
+ if (ret < 0)
+ return ret;
+ else
+ return -EREMOTEIO;
+ }
+ dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val);
+
+ return 0;
+}
+
+#define read_reg(state, reg) \
+({ \
+ u8 __val; \
+ int ret = lgdt3306a_read_reg(state, reg, &__val); \
+ if (lg_chkerr(ret)) \
+ __val = 0; \
+ __val; \
+})
+
+static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state,
+ u16 reg, int bit, int onoff)
+{
+ u8 val;
+ int ret;
+
+ dbg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
+
+ ret = lgdt3306a_read_reg(state, reg, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ val &= ~(1 << bit);
+ val |= (onoff & 1) << bit;
+
+ ret = lgdt3306a_write_reg(state, reg, val);
+ lg_chkerr(ret);
+fail:
+ return ret;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lgdt3306a_soft_reset(struct lgdt3306a_state *state)
+{
+ int ret;
+
+ dbg_info("\n");
+
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ msleep(20);
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1);
+ lg_chkerr(ret);
+
+fail:
+ return ret;
+}
+
+static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state,
+ enum lgdt3306a_mpeg_mode mode)
+{
+ u8 val;
+ int ret;
+
+ dbg_info("(%d)\n", mode);
+ /* transport packet format - TPSENB=0x80 */
+ ret = lgdt3306a_set_reg_bit(state, 0x0071, 7,
+ mode == LGDT3306A_MPEG_PARALLEL ? 1 : 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /*
+ * start of packet signal duration
+ * TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration
+ */
+ ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_read_reg(state, 0x0070, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ val |= 0x10; /* TPCLKSUPB=0x10 */
+
+ if (mode == LGDT3306A_MPEG_PARALLEL)
+ val &= ~0x10;
+
+ ret = lgdt3306a_write_reg(state, 0x0070, val);
+ lg_chkerr(ret);
+
+fail:
+ return ret;
+}
+
+static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state,
+ enum lgdt3306a_tp_clock_edge edge,
+ enum lgdt3306a_tp_valid_polarity valid)
+{
+ u8 val;
+ int ret;
+
+ dbg_info("edge=%d, valid=%d\n", edge, valid);
+
+ ret = lgdt3306a_read_reg(state, 0x0070, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ val &= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */
+
+ if (edge == LGDT3306A_TPCLK_RISING_EDGE)
+ val |= 0x04;
+ if (valid == LGDT3306A_TP_VALID_HIGH)
+ val |= 0x02;
+
+ ret = lgdt3306a_write_reg(state, 0x0070, val);
+ lg_chkerr(ret);
+
+fail:
+ return ret;
+}
+
+static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state,
+ int mode)
+{
+ u8 val;
+ int ret;
+
+ dbg_info("(%d)\n", mode);
+
+ if (mode) {
+ ret = lgdt3306a_read_reg(state, 0x0070, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ /*
+ * Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20,
+ * TPDATAOUTEN=0x08
+ */
+ val &= ~0xa8;
+ ret = lgdt3306a_write_reg(state, 0x0070, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */
+ ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ } else {
+ /* enable IFAGC pin */
+ ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_read_reg(state, 0x0070, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ val |= 0xa8; /* enable bus */
+ ret = lgdt3306a_write_reg(state, 0x0070, val);
+ if (lg_chkerr(ret))
+ goto fail;
+ }
+
+fail:
+ return ret;
+}
+
+static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ dbg_info("acquire=%d\n", acquire);
+
+ return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1);
+
+}
+
+static int lgdt3306a_power(struct lgdt3306a_state *state,
+ int mode)
+{
+ int ret;
+
+ dbg_info("(%d)\n", mode);
+
+ if (mode == 0) {
+ /* into reset */
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* power down */
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ } else {
+ /* out of reset */
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* power up */
+ ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1);
+ if (lg_chkerr(ret))
+ goto fail;
+ }
+
+#ifdef DBG_DUMP
+ lgdt3306a_DumpAllRegs(state);
+#endif
+fail:
+ return ret;
+}
+
+
+static int lgdt3306a_set_vsb(struct lgdt3306a_state *state)
+{
+ u8 val;
+ int ret;
+
+ dbg_info("\n");
+
+ /* 0. Spectrum inversion detection manual; spectrum inverted */
+ ret = lgdt3306a_read_reg(state, 0x0002, &val);
+ val &= 0xf7; /* SPECINVAUTO Off */
+ val |= 0x04; /* SPECINV On */
+ ret = lgdt3306a_write_reg(state, 0x0002, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
+ ret = lgdt3306a_write_reg(state, 0x0008, 0x80);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 2. Bandwidth mode for VSB(6MHz) */
+ ret = lgdt3306a_read_reg(state, 0x0009, &val);
+ val &= 0xe3;
+ val |= 0x0c; /* STDOPDETTMODE[2:0]=3 */
+ ret = lgdt3306a_write_reg(state, 0x0009, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 3. QAM mode detection mode(None) */
+ ret = lgdt3306a_read_reg(state, 0x0009, &val);
+ val &= 0xfc; /* STDOPDETCMODE[1:0]=0 */
+ ret = lgdt3306a_write_reg(state, 0x0009, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 4. ADC sampling frequency rate(2x sampling) */
+ ret = lgdt3306a_read_reg(state, 0x000d, &val);
+ val &= 0xbf; /* SAMPLING4XFEN=0 */
+ ret = lgdt3306a_write_reg(state, 0x000d, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+#if 0
+ /* FGR - disable any AICC filtering, testing only */
+
+ ret = lgdt3306a_write_reg(state, 0x0024, 0x00);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* AICCFIXFREQ0 NT N-1(Video rejection) */
+ ret = lgdt3306a_write_reg(state, 0x002e, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002f, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0030, 0x00);
+
+ /* AICCFIXFREQ1 NT N-1(Audio rejection) */
+ ret = lgdt3306a_write_reg(state, 0x002b, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002c, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002d, 0x00);
+
+ /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
+ ret = lgdt3306a_write_reg(state, 0x0028, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0029, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002a, 0x00);
+
+ /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
+ ret = lgdt3306a_write_reg(state, 0x0025, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0026, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0027, 0x00);
+
+#else
+ /* FGR - this works well for HVR-1955,1975 */
+
+ /* 5. AICCOPMODE NT N-1 Adj. */
+ ret = lgdt3306a_write_reg(state, 0x0024, 0x5A);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* AICCFIXFREQ0 NT N-1(Video rejection) */
+ ret = lgdt3306a_write_reg(state, 0x002e, 0x5A);
+ ret = lgdt3306a_write_reg(state, 0x002f, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0030, 0x00);
+
+ /* AICCFIXFREQ1 NT N-1(Audio rejection) */
+ ret = lgdt3306a_write_reg(state, 0x002b, 0x36);
+ ret = lgdt3306a_write_reg(state, 0x002c, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002d, 0x00);
+
+ /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
+ ret = lgdt3306a_write_reg(state, 0x0028, 0x2A);
+ ret = lgdt3306a_write_reg(state, 0x0029, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x002a, 0x00);
+
+ /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
+ ret = lgdt3306a_write_reg(state, 0x0025, 0x06);
+ ret = lgdt3306a_write_reg(state, 0x0026, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x0027, 0x00);
+#endif
+
+ ret = lgdt3306a_read_reg(state, 0x001e, &val);
+ val &= 0x0f;
+ val |= 0xa0;
+ ret = lgdt3306a_write_reg(state, 0x001e, val);
+
+ ret = lgdt3306a_write_reg(state, 0x0022, 0x08);
+
+ ret = lgdt3306a_write_reg(state, 0x0023, 0xFF);
+
+ ret = lgdt3306a_read_reg(state, 0x211f, &val);
+ val &= 0xef;
+ ret = lgdt3306a_write_reg(state, 0x211f, val);
+
+ ret = lgdt3306a_write_reg(state, 0x2173, 0x01);
+
+ ret = lgdt3306a_read_reg(state, 0x1061, &val);
+ val &= 0xf8;
+ val |= 0x04;
+ ret = lgdt3306a_write_reg(state, 0x1061, val);
+
+ ret = lgdt3306a_read_reg(state, 0x103d, &val);
+ val &= 0xcf;
+ ret = lgdt3306a_write_reg(state, 0x103d, val);
+
+ ret = lgdt3306a_write_reg(state, 0x2122, 0x40);
+
+ ret = lgdt3306a_read_reg(state, 0x2141, &val);
+ val &= 0x3f;
+ ret = lgdt3306a_write_reg(state, 0x2141, val);
+
+ ret = lgdt3306a_read_reg(state, 0x2135, &val);
+ val &= 0x0f;
+ val |= 0x70;
+ ret = lgdt3306a_write_reg(state, 0x2135, val);
+
+ ret = lgdt3306a_read_reg(state, 0x0003, &val);
+ val &= 0xf7;
+ ret = lgdt3306a_write_reg(state, 0x0003, val);
+
+ ret = lgdt3306a_read_reg(state, 0x001c, &val);
+ val &= 0x7f;
+ ret = lgdt3306a_write_reg(state, 0x001c, val);
+
+ /* 6. EQ step size */
+ ret = lgdt3306a_read_reg(state, 0x2179, &val);
+ val &= 0xf8;
+ ret = lgdt3306a_write_reg(state, 0x2179, val);
+
+ ret = lgdt3306a_read_reg(state, 0x217a, &val);
+ val &= 0xf8;
+ ret = lgdt3306a_write_reg(state, 0x217a, val);
+
+ /* 7. Reset */
+ ret = lgdt3306a_soft_reset(state);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ dbg_info("complete\n");
+fail:
+ return ret;
+}
+
+static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation)
+{
+ u8 val;
+ int ret;
+
+ dbg_info("modulation=%d\n", modulation);
+
+ /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
+ ret = lgdt3306a_write_reg(state, 0x0008, 0x08);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 1a. Spectrum inversion detection to Auto */
+ ret = lgdt3306a_read_reg(state, 0x0002, &val);
+ val &= 0xfb; /* SPECINV Off */
+ val |= 0x08; /* SPECINVAUTO On */
+ ret = lgdt3306a_write_reg(state, 0x0002, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 2. Bandwidth mode for QAM */
+ ret = lgdt3306a_read_reg(state, 0x0009, &val);
+ val &= 0xe3; /* STDOPDETTMODE[2:0]=0 VSB Off */
+ ret = lgdt3306a_write_reg(state, 0x0009, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 3. : 64QAM/256QAM detection(manual, auto) */
+ ret = lgdt3306a_read_reg(state, 0x0009, &val);
+ val &= 0xfc;
+ /* Check for forced Manual modulation modes; otherwise always "auto" */
+ if(forced_manual && (modulation != QAM_AUTO)){
+ val |= 0x01; /* STDOPDETCMODE[1:0]= 1=Manual */
+ } else {
+ val |= 0x02; /* STDOPDETCMODE[1:0]= 2=Auto */
+ }
+ ret = lgdt3306a_write_reg(state, 0x0009, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 3a. : 64QAM/256QAM selection for manual */
+ ret = lgdt3306a_read_reg(state, 0x101a, &val);
+ val &= 0xf8;
+ if (modulation == QAM_64)
+ val |= 0x02; /* QMDQMODE[2:0]=2=QAM64 */
+ else
+ val |= 0x04; /* QMDQMODE[2:0]=4=QAM256 */
+
+ ret = lgdt3306a_write_reg(state, 0x101a, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 4. ADC sampling frequency rate(4x sampling) */
+ ret = lgdt3306a_read_reg(state, 0x000d, &val);
+ val &= 0xbf;
+ val |= 0x40; /* SAMPLING4XFEN=1 */
+ ret = lgdt3306a_write_reg(state, 0x000d, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5. No AICC operation in QAM mode */
+ ret = lgdt3306a_read_reg(state, 0x0024, &val);
+ val &= 0x00;
+ ret = lgdt3306a_write_reg(state, 0x0024, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5.1 V0.36 SRDCHKALWAYS : For better QAM detection */
+ ret = lgdt3306a_read_reg(state, 0x000a, &val);
+ val &= 0xfd;
+ val |= 0x02;
+ ret = lgdt3306a_write_reg(state, 0x000a, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5.2 V0.36 Control of "no signal" detector function */
+ ret = lgdt3306a_read_reg(state, 0x2849, &val);
+ val &= 0xdf;
+ ret = lgdt3306a_write_reg(state, 0x2849, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5.3 Fix for Blonder Tongue HDE-2H-QAM and AQM modulators */
+ ret = lgdt3306a_read_reg(state, 0x302b, &val);
+ val &= 0x7f; /* SELFSYNCFINDEN_CQS=0; disable auto reset */
+ ret = lgdt3306a_write_reg(state, 0x302b, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 6. Reset */
+ ret = lgdt3306a_soft_reset(state);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ dbg_info("complete\n");
+fail:
+ return ret;
+}
+
+static int lgdt3306a_set_modulation(struct lgdt3306a_state *state,
+ struct dtv_frontend_properties *p)
+{
+ int ret;
+
+ dbg_info("\n");
+
+ switch (p->modulation) {
+ case VSB_8:
+ ret = lgdt3306a_set_vsb(state);
+ break;
+ case QAM_64:
+ case QAM_256:
+ case QAM_AUTO:
+ ret = lgdt3306a_set_qam(state, p->modulation);
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (lg_chkerr(ret))
+ goto fail;
+
+ state->current_modulation = p->modulation;
+
+fail:
+ return ret;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lgdt3306a_agc_setup(struct lgdt3306a_state *state,
+ struct dtv_frontend_properties *p)
+{
+ /* TODO: anything we want to do here??? */
+ dbg_info("\n");
+
+ switch (p->modulation) {
+ case VSB_8:
+ break;
+ case QAM_64:
+ case QAM_256:
+ case QAM_AUTO:
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lgdt3306a_set_inversion(struct lgdt3306a_state *state,
+ int inversion)
+{
+ int ret;
+
+ dbg_info("(%d)\n", inversion);
+
+ ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion ? 1 : 0);
+ return ret;
+}
+
+static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state,
+ int enabled)
+{
+ int ret;
+
+ dbg_info("(%d)\n", enabled);
+
+ /* 0=Manual 1=Auto(QAM only) - SPECINVAUTO=0x04 */
+ ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled);
+ return ret;
+}
+
+static int lgdt3306a_set_if(struct lgdt3306a_state *state,
+ struct dtv_frontend_properties *p)
+{
+ int ret;
+ u16 if_freq_khz;
+ u8 nco1, nco2;
+
+ switch (p->modulation) {
+ case VSB_8:
+ if_freq_khz = state->cfg->vsb_if_khz;
+ break;
+ case QAM_64:
+ case QAM_256:
+ case QAM_AUTO:
+ if_freq_khz = state->cfg->qam_if_khz;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (if_freq_khz) {
+ default:
+ pr_warn("IF=%d KHz is not supported, 3250 assumed\n",
+ if_freq_khz);
+ fallthrough;
+ case 3250: /* 3.25Mhz */
+ nco1 = 0x34;
+ nco2 = 0x00;
+ break;
+ case 3500: /* 3.50Mhz */
+ nco1 = 0x38;
+ nco2 = 0x00;
+ break;
+ case 4000: /* 4.00Mhz */
+ nco1 = 0x40;
+ nco2 = 0x00;
+ break;
+ case 5000: /* 5.00Mhz */
+ nco1 = 0x50;
+ nco2 = 0x00;
+ break;
+ case 5380: /* 5.38Mhz */
+ nco1 = 0x56;
+ nco2 = 0x14;
+ break;
+ }
+ ret = lgdt3306a_write_reg(state, 0x0010, nco1);
+ if (ret)
+ return ret;
+ ret = lgdt3306a_write_reg(state, 0x0011, nco2);
+ if (ret)
+ return ret;
+
+ dbg_info("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ if (state->cfg->deny_i2c_rptr) {
+ dbg_info("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr);
+ return 0;
+ }
+ dbg_info("(%d)\n", enable);
+
+ /* NI2CRPTEN=0x80 */
+ return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable ? 0 : 1);
+}
+
+static int lgdt3306a_sleep(struct lgdt3306a_state *state)
+{
+ int ret;
+
+ dbg_info("\n");
+ state->current_frequency = -1; /* force re-tune, when we wake */
+
+ ret = lgdt3306a_mpeg_tristate(state, 1); /* disable data bus */
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_power(state, 0); /* power down */
+ lg_chkerr(ret);
+
+fail:
+ return 0;
+}
+
+static int lgdt3306a_fe_sleep(struct dvb_frontend *fe)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ return lgdt3306a_sleep(state);
+}
+
+static int lgdt3306a_init(struct dvb_frontend *fe)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u8 val;
+ int ret;
+
+ dbg_info("\n");
+
+ /* 1. Normal operation mode */
+ ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); /* SIMFASTENB=0x01 */
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 2. Spectrum inversion auto detection (Not valid for VSB) */
+ ret = lgdt3306a_set_inversion_auto(state, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 3. Spectrum inversion(According to the tuner configuration) */
+ ret = lgdt3306a_set_inversion(state, 1);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 4. Peak-to-peak voltage of ADC input signal */
+
+ /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */
+ ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5. ADC output data capture clock phase */
+
+ /* 0=same phase as ADC clock */
+ ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 5a. ADC sampling clock source */
+
+ /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */
+ ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 6. Automatic PLL set */
+
+ /* PLLSETAUTO=0x40; 0=off */
+ ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ if (state->cfg->xtalMHz == 24) { /* 24MHz */
+ /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */
+ ret = lgdt3306a_read_reg(state, 0x0005, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ val &= 0xc0;
+ val |= 0x25;
+ ret = lgdt3306a_write_reg(state, 0x0005, val);
+ if (lg_chkerr(ret))
+ goto fail;
+ ret = lgdt3306a_write_reg(state, 0x0006, 0x64);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */
+ ret = lgdt3306a_read_reg(state, 0x000d, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ val &= 0xc0;
+ val |= 0x18;
+ ret = lgdt3306a_write_reg(state, 0x000d, val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ } else if (state->cfg->xtalMHz == 25) { /* 25MHz */
+ /* 7. Frequency for PLL output */
+ ret = lgdt3306a_read_reg(state, 0x0005, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ val &= 0xc0;
+ val |= 0x25;
+ ret = lgdt3306a_write_reg(state, 0x0005, val);
+ if (lg_chkerr(ret))
+ goto fail;
+ ret = lgdt3306a_write_reg(state, 0x0006, 0x64);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */
+ ret = lgdt3306a_read_reg(state, 0x000d, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ val &= 0xc0;
+ val |= 0x19;
+ ret = lgdt3306a_write_reg(state, 0x000d, val);
+ if (lg_chkerr(ret))
+ goto fail;
+ } else {
+ pr_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz);
+ }
+#if 0
+ ret = lgdt3306a_write_reg(state, 0x000e, 0x00);
+ ret = lgdt3306a_write_reg(state, 0x000f, 0x00);
+#endif
+
+ /* 9. Center frequency of input signal of ADC */
+ ret = lgdt3306a_write_reg(state, 0x0010, 0x34); /* 3.25MHz */
+ ret = lgdt3306a_write_reg(state, 0x0011, 0x00);
+
+ /* 10. Fixed gain error value */
+ ret = lgdt3306a_write_reg(state, 0x0014, 0); /* gain error=0 */
+
+ /* 10a. VSB TR BW gear shift initial step */
+ ret = lgdt3306a_read_reg(state, 0x103c, &val);
+ val &= 0x0f;
+ val |= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */
+ ret = lgdt3306a_write_reg(state, 0x103c, val);
+
+ /* 10b. Timing offset calibration in low temperature for VSB */
+ ret = lgdt3306a_read_reg(state, 0x103d, &val);
+ val &= 0xfc;
+ val |= 0x03;
+ ret = lgdt3306a_write_reg(state, 0x103d, val);
+
+ /* 10c. Timing offset calibration in low temperature for QAM */
+ ret = lgdt3306a_read_reg(state, 0x1036, &val);
+ val &= 0xf0;
+ val |= 0x0c;
+ ret = lgdt3306a_write_reg(state, 0x1036, val);
+
+ /* 11. Using the imaginary part of CIR in CIR loading */
+ ret = lgdt3306a_read_reg(state, 0x211f, &val);
+ val &= 0xef; /* do not use imaginary of CIR */
+ ret = lgdt3306a_write_reg(state, 0x211f, val);
+
+ /* 12. Control of no signal detector function */
+ ret = lgdt3306a_read_reg(state, 0x2849, &val);
+ val &= 0xef; /* NOUSENOSIGDET=0, enable no signal detector */
+ ret = lgdt3306a_write_reg(state, 0x2849, val);
+
+ /* FGR - put demod in some known mode */
+ ret = lgdt3306a_set_vsb(state);
+
+ /* 13. TP stream format */
+ ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode);
+
+ /* 14. disable output buses */
+ ret = lgdt3306a_mpeg_tristate(state, 1);
+
+ /* 15. Sleep (in reset) */
+ ret = lgdt3306a_sleep(state);
+ lg_chkerr(ret);
+
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+
+fail:
+ return ret;
+}
+
+static int lgdt3306a_set_parameters(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+ int ret;
+
+ dbg_info("(%d, %d)\n", p->frequency, p->modulation);
+
+ if (state->current_frequency == p->frequency &&
+ state->current_modulation == p->modulation) {
+ dbg_info(" (already set, skipping ...)\n");
+ return 0;
+ }
+ state->current_frequency = -1;
+ state->current_modulation = -1;
+
+ ret = lgdt3306a_power(state, 1); /* power up */
+ if (lg_chkerr(ret))
+ goto fail;
+
+ 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 0
+ if (lg_chkerr(ret))
+ goto fail;
+ state->current_frequency = p->frequency;
+#endif
+ }
+
+ ret = lgdt3306a_set_modulation(state, p);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_agc_setup(state, p);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_set_if(state, p);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ /* spectral_inversion defaults already set for VSB and QAM */
+
+ ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_mpeg_mode_polarity(state,
+ state->cfg->tpclk_edge,
+ state->cfg->tpvalid_polarity);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_mpeg_tristate(state, 0); /* enable data bus */
+ if (lg_chkerr(ret))
+ goto fail;
+
+ ret = lgdt3306a_soft_reset(state);
+ if (lg_chkerr(ret))
+ goto fail;
+
+#ifdef DBG_DUMP
+ lgdt3306a_DumpAllRegs(state);
+#endif
+ state->current_frequency = p->frequency;
+fail:
+ return ret;
+}
+
+static int lgdt3306a_get_frontend(struct dvb_frontend *fe,
+ struct dtv_frontend_properties *p)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ dbg_info("(%u, %d)\n",
+ state->current_frequency, state->current_modulation);
+
+ p->modulation = state->current_modulation;
+ p->frequency = state->current_frequency;
+ return 0;
+}
+
+static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe)
+{
+#if 1
+ return DVBFE_ALGO_CUSTOM;
+#else
+ return DVBFE_ALGO_HW;
+#endif
+}
+
+/* ------------------------------------------------------------------------ */
+static int lgdt3306a_monitor_vsb(struct lgdt3306a_state *state)
+{
+ u8 val;
+ int ret;
+ u8 snrRef, maxPowerMan, nCombDet;
+ u16 fbDlyCir;
+
+ ret = lgdt3306a_read_reg(state, 0x21a1, &val);
+ if (ret)
+ return ret;
+ snrRef = val & 0x3f;
+
+ ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan);
+ if (ret)
+ return ret;
+
+ ret = lgdt3306a_read_reg(state, 0x2191, &val);
+ if (ret)
+ return ret;
+ nCombDet = (val & 0x80) >> 7;
+
+ ret = lgdt3306a_read_reg(state, 0x2180, &val);
+ if (ret)
+ return ret;
+ fbDlyCir = (val & 0x03) << 8;
+
+ ret = lgdt3306a_read_reg(state, 0x2181, &val);
+ if (ret)
+ return ret;
+ fbDlyCir |= val;
+
+ dbg_info("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n",
+ snrRef, maxPowerMan, nCombDet, fbDlyCir);
+
+ /* Carrier offset sub loop bandwidth */
+ ret = lgdt3306a_read_reg(state, 0x1061, &val);
+ if (ret)
+ return ret;
+ val &= 0xf8;
+ if ((snrRef > 18) && (maxPowerMan > 0x68)
+ && (nCombDet == 0x01)
+ && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) {
+ /* SNR is over 18dB and no ghosting */
+ val |= 0x00; /* final bandwidth = 0 */
+ } else {
+ val |= 0x04; /* final bandwidth = 4 */
+ }
+ ret = lgdt3306a_write_reg(state, 0x1061, val);
+ if (ret)
+ return ret;
+
+ /* Adjust Notch Filter */
+ ret = lgdt3306a_read_reg(state, 0x0024, &val);
+ if (ret)
+ return ret;
+ val &= 0x0f;
+ if (nCombDet == 0) { /* Turn on the Notch Filter */
+ val |= 0x50;
+ }
+ ret = lgdt3306a_write_reg(state, 0x0024, val);
+ if (ret)
+ return ret;
+
+ /* VSB Timing Recovery output normalization */
+ ret = lgdt3306a_read_reg(state, 0x103d, &val);
+ if (ret)
+ return ret;
+ val &= 0xcf;
+ val |= 0x20;
+ ret = lgdt3306a_write_reg(state, 0x103d, val);
+
+ return ret;
+}
+
+static enum lgdt3306a_modulation
+lgdt3306a_check_oper_mode(struct lgdt3306a_state *state)
+{
+ u8 val = 0;
+ int ret;
+
+ ret = lgdt3306a_read_reg(state, 0x0081, &val);
+ if (ret)
+ goto err;
+
+ if (val & 0x80) {
+ dbg_info("VSB\n");
+ return LG3306_VSB;
+ }
+ if (val & 0x08) {
+ ret = lgdt3306a_read_reg(state, 0x00a6, &val);
+ if (ret)
+ goto err;
+ val = val >> 2;
+ if (val & 0x01) {
+ dbg_info("QAM256\n");
+ return LG3306_QAM256;
+ }
+ dbg_info("QAM64\n");
+ return LG3306_QAM64;
+ }
+err:
+ pr_warn("UNKNOWN\n");
+ return LG3306_UNKNOWN_MODE;
+}
+
+static enum lgdt3306a_lock_status
+lgdt3306a_check_lock_status(struct lgdt3306a_state *state,
+ enum lgdt3306a_lock_check whatLock)
+{
+ u8 val = 0;
+ int ret;
+ enum lgdt3306a_modulation modeOper;
+ enum lgdt3306a_lock_status lockStatus;
+
+ modeOper = LG3306_UNKNOWN_MODE;
+
+ switch (whatLock) {
+ case LG3306_SYNC_LOCK:
+ {
+ ret = lgdt3306a_read_reg(state, 0x00a6, &val);
+ if (ret)
+ return ret;
+
+ if ((val & 0x80) == 0x80)
+ lockStatus = LG3306_LOCK;
+ else
+ lockStatus = LG3306_UNLOCK;
+
+ dbg_info("SYNC_LOCK=%x\n", lockStatus);
+ break;
+ }
+ case LG3306_AGC_LOCK:
+ {
+ ret = lgdt3306a_read_reg(state, 0x0080, &val);
+ if (ret)
+ return ret;
+
+ if ((val & 0x40) == 0x40)
+ lockStatus = LG3306_LOCK;
+ else
+ lockStatus = LG3306_UNLOCK;
+
+ dbg_info("AGC_LOCK=%x\n", lockStatus);
+ break;
+ }
+ case LG3306_TR_LOCK:
+ {
+ modeOper = lgdt3306a_check_oper_mode(state);
+ if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) {
+ ret = lgdt3306a_read_reg(state, 0x1094, &val);
+ if (ret)
+ return ret;
+
+ if ((val & 0x80) == 0x80)
+ lockStatus = LG3306_LOCK;
+ else
+ lockStatus = LG3306_UNLOCK;
+ } else
+ lockStatus = LG3306_UNKNOWN_LOCK;
+
+ dbg_info("TR_LOCK=%x\n", lockStatus);
+ break;
+ }
+ case LG3306_FEC_LOCK:
+ {
+ modeOper = lgdt3306a_check_oper_mode(state);
+ if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) {
+ ret = lgdt3306a_read_reg(state, 0x0080, &val);
+ if (ret)
+ return ret;
+
+ if ((val & 0x10) == 0x10)
+ lockStatus = LG3306_LOCK;
+ else
+ lockStatus = LG3306_UNLOCK;
+ } else
+ lockStatus = LG3306_UNKNOWN_LOCK;
+
+ dbg_info("FEC_LOCK=%x\n", lockStatus);
+ break;
+ }
+
+ default:
+ lockStatus = LG3306_UNKNOWN_LOCK;
+ pr_warn("UNKNOWN whatLock=%d\n", whatLock);
+ break;
+ }
+
+ return lockStatus;
+}
+
+static enum lgdt3306a_neverlock_status
+lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state)
+{
+ u8 val = 0;
+ int ret;
+ enum lgdt3306a_neverlock_status lockStatus;
+
+ ret = lgdt3306a_read_reg(state, 0x0080, &val);
+ if (ret)
+ return ret;
+ lockStatus = (enum lgdt3306a_neverlock_status)(val & 0x03);
+
+ dbg_info("NeverLock=%d", lockStatus);
+
+ return lockStatus;
+}
+
+static int lgdt3306a_pre_monitoring(struct lgdt3306a_state *state)
+{
+ u8 val = 0;
+ int ret;
+ u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus;
+
+ /* Channel variation */
+ ret = lgdt3306a_read_reg(state, 0x21bc, &currChDiffACQ);
+ if (ret)
+ return ret;
+
+ /* SNR of Frame sync */
+ ret = lgdt3306a_read_reg(state, 0x21a1, &val);
+ if (ret)
+ return ret;
+ snrRef = val & 0x3f;
+
+ /* Strong Main CIR */
+ ret = lgdt3306a_read_reg(state, 0x2199, &val);
+ if (ret)
+ return ret;
+ mainStrong = (val & 0x40) >> 6;
+
+ ret = lgdt3306a_read_reg(state, 0x0090, &val);
+ if (ret)
+ return ret;
+ aiccrejStatus = (val & 0xf0) >> 4;
+
+ dbg_info("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n",
+ snrRef, mainStrong, aiccrejStatus, currChDiffACQ);
+
+#if 0
+ /* Dynamic ghost exists */
+ if ((mainStrong == 0) && (currChDiffACQ > 0x70))
+#endif
+ if (mainStrong == 0) {
+ ret = lgdt3306a_read_reg(state, 0x2135, &val);
+ if (ret)
+ return ret;
+ val &= 0x0f;
+ val |= 0xa0;
+ ret = lgdt3306a_write_reg(state, 0x2135, val);
+ if (ret)
+ return ret;
+
+ ret = lgdt3306a_read_reg(state, 0x2141, &val);
+ if (ret)
+ return ret;
+ val &= 0x3f;
+ val |= 0x80;
+ ret = lgdt3306a_write_reg(state, 0x2141, val);
+ if (ret)
+ return ret;
+
+ ret = lgdt3306a_write_reg(state, 0x2122, 0x70);
+ if (ret)
+ return ret;
+ } else { /* Weak ghost or static channel */
+ ret = lgdt3306a_read_reg(state, 0x2135, &val);
+ if (ret)
+ return ret;
+ val &= 0x0f;
+ val |= 0x70;
+ ret = lgdt3306a_write_reg(state, 0x2135, val);
+ if (ret)
+ return ret;
+
+ ret = lgdt3306a_read_reg(state, 0x2141, &val);
+ if (ret)
+ return ret;
+ val &= 0x3f;
+ val |= 0x40;
+ ret = lgdt3306a_write_reg(state, 0x2141, val);
+ if (ret)
+ return ret;
+
+ ret = lgdt3306a_write_reg(state, 0x2122, 0x40);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static enum lgdt3306a_lock_status
+lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state)
+{
+ enum lgdt3306a_lock_status syncLockStatus = LG3306_UNLOCK;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ msleep(30);
+
+ syncLockStatus = lgdt3306a_check_lock_status(state,
+ LG3306_SYNC_LOCK);
+
+ if (syncLockStatus == LG3306_LOCK) {
+ dbg_info("locked(%d)\n", i);
+ return LG3306_LOCK;
+ }
+ }
+ dbg_info("not locked\n");
+ return LG3306_UNLOCK;
+}
+
+static enum lgdt3306a_lock_status
+lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state)
+{
+ enum lgdt3306a_lock_status FECLockStatus = LG3306_UNLOCK;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ msleep(30);
+
+ FECLockStatus = lgdt3306a_check_lock_status(state,
+ LG3306_FEC_LOCK);
+
+ if (FECLockStatus == LG3306_LOCK) {
+ dbg_info("locked(%d)\n", i);
+ return FECLockStatus;
+ }
+ }
+ dbg_info("not locked\n");
+ return FECLockStatus;
+}
+
+static enum lgdt3306a_neverlock_status
+lgdt3306a_neverlock_poll(struct lgdt3306a_state *state)
+{
+ enum lgdt3306a_neverlock_status NLLockStatus = LG3306_NL_FAIL;
+ int i;
+
+ for (i = 0; i < 5; i++) {
+ msleep(30);
+
+ NLLockStatus = lgdt3306a_check_neverlock_status(state);
+
+ if (NLLockStatus == LG3306_NL_LOCK) {
+ dbg_info("NL_LOCK(%d)\n", i);
+ return NLLockStatus;
+ }
+ }
+ dbg_info("NLLockStatus=%d\n", NLLockStatus);
+ return NLLockStatus;
+}
+
+static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state)
+{
+ u8 val;
+ int ret;
+
+ ret = lgdt3306a_read_reg(state, 0x00fa, &val);
+ if (ret)
+ return ret;
+
+ return val;
+}
+
+static const u32 valx_x10[] = {
+ 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100
+};
+static const u32 log10x_x1000[] = {
+ 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000
+};
+
+static u32 log10_x1000(u32 x)
+{
+ u32 diff_val, step_val, step_log10;
+ u32 log_val = 0;
+ u32 i;
+
+ if (x <= 0)
+ return -1000000; /* signal error */
+
+ if (x == 10)
+ return 0; /* log(1)=0 */
+
+ if (x < 10) {
+ while (x < 10) {
+ x = x * 10;
+ log_val--;
+ }
+ } else { /* x > 10 */
+ while (x >= 100) {
+ x = x / 10;
+ log_val++;
+ }
+ }
+ log_val *= 1000;
+
+ if (x == 10) /* was our input an exact multiple of 10 */
+ return log_val; /* don't need to interpolate */
+
+ /* find our place on the log curve */
+ for (i = 1; i < ARRAY_SIZE(valx_x10); i++) {
+ if (valx_x10[i] >= x)
+ break;
+ }
+ if (i == ARRAY_SIZE(valx_x10))
+ return log_val + log10x_x1000[i - 1];
+
+ diff_val = x - valx_x10[i-1];
+ step_val = valx_x10[i] - valx_x10[i - 1];
+ step_log10 = log10x_x1000[i] - log10x_x1000[i - 1];
+
+ /* do a linear interpolation to get in-between values */
+ return log_val + log10x_x1000[i - 1] +
+ ((diff_val*step_log10) / step_val);
+}
+
+static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state)
+{
+ u32 mse; /* Mean-Square Error */
+ u32 pwr; /* Constelation power */
+ u32 snr_x100;
+
+ mse = (read_reg(state, 0x00ec) << 8) |
+ (read_reg(state, 0x00ed));
+ pwr = (read_reg(state, 0x00e8) << 8) |
+ (read_reg(state, 0x00e9));
+
+ if (mse == 0) /* no signal */
+ return 0;
+
+ snr_x100 = log10_x1000((pwr * 10000) / mse) - 3000;
+ dbg_info("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100);
+
+ return snr_x100;
+}
+
+static enum lgdt3306a_lock_status
+lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state)
+{
+ int ret;
+ u8 cnt = 0;
+ u8 packet_error;
+ u32 snr;
+
+ for (cnt = 0; cnt < 10; cnt++) {
+ if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) {
+ dbg_info("no sync lock!\n");
+ return LG3306_UNLOCK;
+ }
+
+ msleep(20);
+ ret = lgdt3306a_pre_monitoring(state);
+ if (ret)
+ break;
+
+ packet_error = lgdt3306a_get_packet_error(state);
+ snr = lgdt3306a_calculate_snr_x100(state);
+ dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr);
+
+ if ((snr >= 1500) && (packet_error < 0xff))
+ return LG3306_LOCK;
+ }
+
+ dbg_info("not locked!\n");
+ return LG3306_UNLOCK;
+}
+
+static enum lgdt3306a_lock_status
+lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state)
+{
+ u8 cnt;
+ u8 packet_error;
+ u32 snr;
+
+ for (cnt = 0; cnt < 10; cnt++) {
+ if (lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) {
+ dbg_info("no fec lock!\n");
+ return LG3306_UNLOCK;
+ }
+
+ msleep(20);
+
+ packet_error = lgdt3306a_get_packet_error(state);
+ snr = lgdt3306a_calculate_snr_x100(state);
+ dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr);
+
+ if ((snr >= 1500) && (packet_error < 0xff))
+ return LG3306_LOCK;
+ }
+
+ dbg_info("not locked!\n");
+ return LG3306_UNLOCK;
+}
+
+static int lgdt3306a_read_status(struct dvb_frontend *fe,
+ enum fe_status *status)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u16 strength = 0;
+ int ret = 0;
+
+ if (fe->ops.tuner_ops.get_rf_strength) {
+ ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength);
+ if (ret == 0)
+ dbg_info("strength=%d\n", strength);
+ else
+ dbg_info("fe->ops.tuner_ops.get_rf_strength() failed\n");
+ }
+
+ *status = 0;
+ if (lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) {
+ *status |= FE_HAS_SIGNAL;
+ *status |= FE_HAS_CARRIER;
+
+ switch (state->current_modulation) {
+ case QAM_256:
+ case QAM_64:
+ case QAM_AUTO:
+ if (lgdt3306a_qam_lock_poll(state) == LG3306_LOCK) {
+ *status |= FE_HAS_VITERBI;
+ *status |= FE_HAS_SYNC;
+
+ *status |= FE_HAS_LOCK;
+ }
+ break;
+ case VSB_8:
+ if (lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK) {
+ *status |= FE_HAS_VITERBI;
+ *status |= FE_HAS_SYNC;
+
+ *status |= FE_HAS_LOCK;
+
+ ret = lgdt3306a_monitor_vsb(state);
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ if (*status & FE_HAS_SYNC) {
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ c->cnr.stat[0].svalue = lgdt3306a_calculate_snr_x100(state) * 10;
+ } else {
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+ }
+ return ret;
+}
+
+
+static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ state->snr = lgdt3306a_calculate_snr_x100(state);
+ /* report SNR in dB * 10 */
+ *snr = state->snr/10;
+
+ return 0;
+}
+
+static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ /*
+ * Calculate some sort of "strength" from SNR
+ */
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+ u8 val;
+ u16 snr; /* snr_x10 */
+ int ret;
+ u32 ref_snr; /* snr*100 */
+ u32 str;
+
+ *strength = 0;
+
+ switch (state->current_modulation) {
+ case VSB_8:
+ ref_snr = 1600; /* 16dB */
+ break;
+ case QAM_64:
+ case QAM_256:
+ case QAM_AUTO:
+ /* need to know actual modulation to set proper SNR baseline */
+ ret = lgdt3306a_read_reg(state, 0x00a6, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ if(val & 0x04)
+ ref_snr = 2800; /* QAM-256 28dB */
+ else
+ ref_snr = 2200; /* QAM-64 22dB */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = fe->ops.read_snr(fe, &snr);
+ if (lg_chkerr(ret))
+ goto fail;
+
+ if (state->snr <= (ref_snr - 100))
+ str = 0;
+ else if (state->snr <= ref_snr)
+ str = (0xffff * 65) / 100; /* 65% */
+ else {
+ str = state->snr - ref_snr;
+ str /= 50;
+ str += 78; /* 78%-100% */
+ if (str > 100)
+ str = 100;
+ str = (0xffff * str) / 100;
+ }
+ *strength = (u16)str;
+ dbg_info("strength=%u\n", *strength);
+
+fail:
+ return ret;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+ u32 tmp;
+
+ *ber = 0;
+#if 1
+ /* FGR - FIXME - I don't know what value is expected by dvb_core
+ * what is the scale of the value?? */
+ tmp = read_reg(state, 0x00fc); /* NBERVALUE[24-31] */
+ tmp = (tmp << 8) | read_reg(state, 0x00fd); /* NBERVALUE[16-23] */
+ tmp = (tmp << 8) | read_reg(state, 0x00fe); /* NBERVALUE[8-15] */
+ tmp = (tmp << 8) | read_reg(state, 0x00ff); /* NBERVALUE[0-7] */
+ *ber = tmp;
+ dbg_info("ber=%u\n", tmp);
+#endif
+ return 0;
+}
+
+static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ *ucblocks = 0;
+#if 1
+ /* FGR - FIXME - I don't know what value is expected by dvb_core
+ * what happens when value wraps? */
+ *ucblocks = read_reg(state, 0x00f4); /* TPIFTPERRCNT[0-7] */
+ dbg_info("ucblocks=%u\n", *ucblocks);
+#endif
+
+ return 0;
+}
+
+static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune,
+ unsigned int mode_flags, unsigned int *delay,
+ enum fe_status *status)
+{
+ int ret = 0;
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ dbg_info("re_tune=%u\n", re_tune);
+
+ if (re_tune) {
+ state->current_frequency = -1; /* force re-tune */
+ ret = lgdt3306a_set_parameters(fe);
+ if (ret != 0)
+ return ret;
+ }
+ *delay = 125;
+ ret = lgdt3306a_read_status(fe, status);
+
+ return ret;
+}
+
+static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings
+ *fe_tune_settings)
+{
+ fe_tune_settings->min_delay_ms = 100;
+ dbg_info("\n");
+ return 0;
+}
+
+static enum dvbfe_search lgdt3306a_search(struct dvb_frontend *fe)
+{
+ enum fe_status status = 0;
+ int ret;
+
+ /* set frontend */
+ ret = lgdt3306a_set_parameters(fe);
+ if (ret)
+ goto error;
+
+ ret = lgdt3306a_read_status(fe, &status);
+ if (ret)
+ goto error;
+
+ /* check if we have a valid signal */
+ if (status & FE_HAS_LOCK)
+ return DVBFE_ALGO_SEARCH_SUCCESS;
+ else
+ return DVBFE_ALGO_SEARCH_AGAIN;
+
+error:
+ dbg_info("failed (%d)\n", ret);
+ return DVBFE_ALGO_SEARCH_ERROR;
+}
+
+static void lgdt3306a_release(struct dvb_frontend *fe)
+{
+ struct lgdt3306a_state *state = fe->demodulator_priv;
+
+ dbg_info("\n");
+ kfree(state);
+}
+
+static const struct dvb_frontend_ops lgdt3306a_ops;
+
+struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
+ struct i2c_adapter *i2c_adap)
+{
+ struct lgdt3306a_state *state = NULL;
+ int ret;
+ u8 val;
+
+ dbg_info("(%d-%04x)\n",
+ i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
+ config ? config->i2c_addr : 0);
+
+ state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL);
+ if (state == NULL)
+ goto fail;
+
+ state->cfg = config;
+ state->i2c_adap = i2c_adap;
+
+ memcpy(&state->frontend.ops, &lgdt3306a_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ /* verify that we're talking to a lg3306a */
+ /* FGR - NOTE - there is no obvious ChipId to check; we check
+ * some "known" bits after reset, but it's still just a guess */
+ ret = lgdt3306a_read_reg(state, 0x0000, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ if ((val & 0x74) != 0x74) {
+ pr_warn("expected 0x74, got 0x%x\n", (val & 0x74));
+#if 0
+ /* FIXME - re-enable when we know this is right */
+ goto fail;
+#endif
+ }
+ ret = lgdt3306a_read_reg(state, 0x0001, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ if ((val & 0xf6) != 0xc6) {
+ pr_warn("expected 0xc6, got 0x%x\n", (val & 0xf6));
+#if 0
+ /* FIXME - re-enable when we know this is right */
+ goto fail;
+#endif
+ }
+ ret = lgdt3306a_read_reg(state, 0x0002, &val);
+ if (lg_chkerr(ret))
+ goto fail;
+ if ((val & 0x73) != 0x03) {
+ pr_warn("expected 0x03, got 0x%x\n", (val & 0x73));
+#if 0
+ /* FIXME - re-enable when we know this is right */
+ goto fail;
+#endif
+ }
+
+ state->current_frequency = -1;
+ state->current_modulation = -1;
+
+ lgdt3306a_sleep(state);
+
+ return &state->frontend;
+
+fail:
+ pr_warn("unable to detect LGDT3306A hardware\n");
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(lgdt3306a_attach);
+
+#ifdef DBG_DUMP
+
+static const short regtab[] = {
+ 0x0000, /* SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 */
+ 0x0001, /* 1'b1 1'b1 1'b0 1'b0 AUTORPTRS */
+ 0x0002, /* NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT */
+ 0x0003, /* AGCRFOUT */
+ 0x0004, /* ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL */
+ 0x0005, /* PLLINDIVSE */
+ 0x0006, /* PLLCTRL[7:0] 11100001 */
+ 0x0007, /* SYSINITWAITTIME[7:0] (msec) 00001000 */
+ 0x0008, /* STDOPMODE[7:0] 10000000 */
+ 0x0009, /* 1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 */
+ 0x000a, /* DAFTEN 1'b1 x x SCSYSLOCK */
+ 0x000b, /* SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 */
+ 0x000d, /* x SAMPLING4 */
+ 0x000e, /* SAMFREQ[15:8] 00000000 */
+ 0x000f, /* SAMFREQ[7:0] 00000000 */
+ 0x0010, /* IFFREQ[15:8] 01100000 */
+ 0x0011, /* IFFREQ[7:0] 00000000 */
+ 0x0012, /* AGCEN AGCREFMO */
+ 0x0013, /* AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 */
+ 0x0014, /* AGCFIXVALUE[7:0] 01111111 */
+ 0x0015, /* AGCREF[15:8] 00001010 */
+ 0x0016, /* AGCREF[7:0] 11100100 */
+ 0x0017, /* AGCDELAY[7:0] 00100000 */
+ 0x0018, /* AGCRFBW[3:0] AGCIFBW[3:0] 10001000 */
+ 0x0019, /* AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL */
+ 0x001c, /* 1'b1 PFEN MFEN AICCVSYNC */
+ 0x001d, /* 1'b0 1'b1 1'b0 1'b1 AICCVSYNC */
+ 0x001e, /* AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 */
+ 0x001f, /* AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 */
+ 0x0020, /* AICCDETTH[15:8] 01111100 */
+ 0x0021, /* AICCDETTH[7:0] 00000000 */
+ 0x0022, /* AICCOFFTH[15:8] 00000101 */
+ 0x0023, /* AICCOFFTH[7:0] 11100000 */
+ 0x0024, /* AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 */
+ 0x0025, /* AICCFIXFREQ3[23:16] 00000000 */
+ 0x0026, /* AICCFIXFREQ3[15:8] 00000000 */
+ 0x0027, /* AICCFIXFREQ3[7:0] 00000000 */
+ 0x0028, /* AICCFIXFREQ2[23:16] 00000000 */
+ 0x0029, /* AICCFIXFREQ2[15:8] 00000000 */
+ 0x002a, /* AICCFIXFREQ2[7:0] 00000000 */
+ 0x002b, /* AICCFIXFREQ1[23:16] 00000000 */
+ 0x002c, /* AICCFIXFREQ1[15:8] 00000000 */
+ 0x002d, /* AICCFIXFREQ1[7:0] 00000000 */
+ 0x002e, /* AICCFIXFREQ0[23:16] 00000000 */
+ 0x002f, /* AICCFIXFREQ0[15:8] 00000000 */
+ 0x0030, /* AICCFIXFREQ0[7:0] 00000000 */
+ 0x0031, /* 1'b0 1'b1 1'b0 1'b0 x DAGC1STER */
+ 0x0032, /* DAGC1STEN DAGC1STER */
+ 0x0033, /* DAGC1STREF[15:8] 00001010 */
+ 0x0034, /* DAGC1STREF[7:0] 11100100 */
+ 0x0035, /* DAGC2NDE */
+ 0x0036, /* DAGC2NDREF[15:8] 00001010 */
+ 0x0037, /* DAGC2NDREF[7:0] 10000000 */
+ 0x0038, /* DAGC2NDLOCKDETRNGSEL[1:0] */
+ 0x003d, /* 1'b1 SAMGEARS */
+ 0x0040, /* SAMLFGMA */
+ 0x0041, /* SAMLFBWM */
+ 0x0044, /* 1'b1 CRGEARSHE */
+ 0x0045, /* CRLFGMAN */
+ 0x0046, /* CFLFBWMA */
+ 0x0047, /* CRLFGMAN */
+ 0x0048, /* x x x x CRLFGSTEP_VS[3:0] xxxx1001 */
+ 0x0049, /* CRLFBWMA */
+ 0x004a, /* CRLFBWMA */
+ 0x0050, /* 1'b0 1'b1 1'b1 1'b0 MSECALCDA */
+ 0x0070, /* TPOUTEN TPIFEN TPCLKOUTE */
+ 0x0071, /* TPSENB TPSSOPBITE */
+ 0x0073, /* TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 */
+ 0x0075, /* x x x x x IQSWAPCTRL[2:0] xxxxx000 */
+ 0x0076, /* NBERCON NBERST NBERPOL NBERWSYN */
+ 0x0077, /* x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 */
+ 0x0078, /* NBERPOLY[31:24] 00000000 */
+ 0x0079, /* NBERPOLY[23:16] 00000000 */
+ 0x007a, /* NBERPOLY[15:8] 00000000 */
+ 0x007b, /* NBERPOLY[7:0] 00000000 */
+ 0x007c, /* NBERPED[31:24] 00000000 */
+ 0x007d, /* NBERPED[23:16] 00000000 */
+ 0x007e, /* NBERPED[15:8] 00000000 */
+ 0x007f, /* NBERPED[7:0] 00000000 */
+ 0x0080, /* x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] */
+ 0x0085, /* SPECINVST */
+ 0x0088, /* SYSLOCKTIME[15:8] */
+ 0x0089, /* SYSLOCKTIME[7:0] */
+ 0x008c, /* FECLOCKTIME[15:8] */
+ 0x008d, /* FECLOCKTIME[7:0] */
+ 0x008e, /* AGCACCOUT[15:8] */
+ 0x008f, /* AGCACCOUT[7:0] */
+ 0x0090, /* AICCREJSTATUS[3:0] AICCREJBUSY[3:0] */
+ 0x0091, /* AICCVSYNC */
+ 0x009c, /* CARRFREQOFFSET[15:8] */
+ 0x009d, /* CARRFREQOFFSET[7:0] */
+ 0x00a1, /* SAMFREQOFFSET[23:16] */
+ 0x00a2, /* SAMFREQOFFSET[15:8] */
+ 0x00a3, /* SAMFREQOFFSET[7:0] */
+ 0x00a6, /* SYNCLOCK SYNCLOCKH */
+#if 0 /* covered elsewhere */
+ 0x00e8, /* CONSTPWR[15:8] */
+ 0x00e9, /* CONSTPWR[7:0] */
+ 0x00ea, /* BMSE[15:8] */
+ 0x00eb, /* BMSE[7:0] */
+ 0x00ec, /* MSE[15:8] */
+ 0x00ed, /* MSE[7:0] */
+ 0x00ee, /* CONSTI[7:0] */
+ 0x00ef, /* CONSTQ[7:0] */
+#endif
+ 0x00f4, /* TPIFTPERRCNT[7:0] */
+ 0x00f5, /* TPCORREC */
+ 0x00f6, /* VBBER[15:8] */
+ 0x00f7, /* VBBER[7:0] */
+ 0x00f8, /* VABER[15:8] */
+ 0x00f9, /* VABER[7:0] */
+ 0x00fa, /* TPERRCNT[7:0] */
+ 0x00fb, /* NBERLOCK x x x x x x x */
+ 0x00fc, /* NBERVALUE[31:24] */
+ 0x00fd, /* NBERVALUE[23:16] */
+ 0x00fe, /* NBERVALUE[15:8] */
+ 0x00ff, /* NBERVALUE[7:0] */
+ 0x1000, /* 1'b0 WODAGCOU */
+ 0x1005, /* x x 1'b1 1'b1 x SRD_Q_QM */
+ 0x1009, /* SRDWAITTIME[7:0] (10msec) 00100011 */
+ 0x100a, /* SRDWAITTIME_CQS[7:0] (msec) 01100100 */
+ 0x101a, /* x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 */
+ 0x1036, /* 1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 */
+ 0x103c, /* SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 */
+ 0x103d, /* 1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 */
+ 0x103f, /* SAMZTEDSE */
+ 0x105d, /* EQSTATUSE */
+ 0x105f, /* x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 */
+ 0x1060, /* 1'b1 EQSTATUSE */
+ 0x1061, /* CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 */
+ 0x1065, /* 1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x */
+ 0x1066, /* 1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE */
+ 0x1068, /* CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 */
+ 0x106e, /* x x x x x CREPHNEN_ */
+ 0x106f, /* CREPHNTH_V[7:0] 00010101 */
+ 0x1072, /* CRSWEEPN */
+ 0x1073, /* CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 */
+ 0x1074, /* CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 */
+ 0x1080, /* DAFTSTATUS[1:0] x x x x x x */
+ 0x1081, /* SRDSTATUS[1:0] x x x x x SRDLOCK */
+ 0x10a9, /* EQSTATUS_CQS[1:0] x x x x x x */
+ 0x10b7, /* EQSTATUS_V[1:0] x x x x x x */
+#if 0 /* SMART_ANT */
+ 0x1f00, /* MODEDETE */
+ 0x1f01, /* x x x x x x x SFNRST xxxxxxx0 */
+ 0x1f03, /* NUMOFANT[7:0] 10000000 */
+ 0x1f04, /* x SELMASK[6:0] x0000000 */
+ 0x1f05, /* x SETMASK[6:0] x0000000 */
+ 0x1f06, /* x TXDATA[6:0] x0000000 */
+ 0x1f07, /* x CHNUMBER[6:0] x0000000 */
+ 0x1f09, /* AGCTIME[23:16] 10011000 */
+ 0x1f0a, /* AGCTIME[15:8] 10010110 */
+ 0x1f0b, /* AGCTIME[7:0] 10000000 */
+ 0x1f0c, /* ANTTIME[31:24] 00000000 */
+ 0x1f0d, /* ANTTIME[23:16] 00000011 */
+ 0x1f0e, /* ANTTIME[15:8] 10010000 */
+ 0x1f0f, /* ANTTIME[7:0] 10010000 */
+ 0x1f11, /* SYNCTIME[23:16] 10011000 */
+ 0x1f12, /* SYNCTIME[15:8] 10010110 */
+ 0x1f13, /* SYNCTIME[7:0] 10000000 */
+ 0x1f14, /* SNRTIME[31:24] 00000001 */
+ 0x1f15, /* SNRTIME[23:16] 01111101 */
+ 0x1f16, /* SNRTIME[15:8] 01111000 */
+ 0x1f17, /* SNRTIME[7:0] 01000000 */
+ 0x1f19, /* FECTIME[23:16] 00000000 */
+ 0x1f1a, /* FECTIME[15:8] 01110010 */
+ 0x1f1b, /* FECTIME[7:0] 01110000 */
+ 0x1f1d, /* FECTHD[7:0] 00000011 */
+ 0x1f1f, /* SNRTHD[23:16] 00001000 */
+ 0x1f20, /* SNRTHD[15:8] 01111111 */
+ 0x1f21, /* SNRTHD[7:0] 10000101 */
+ 0x1f80, /* IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG */
+ 0x1f81, /* x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO */
+ 0x1f82, /* x x x SCANOPCD[4:0] */
+ 0x1f83, /* x x x x MAINOPCD[3:0] */
+ 0x1f84, /* x x RXDATA[13:8] */
+ 0x1f85, /* RXDATA[7:0] */
+ 0x1f86, /* x x SDTDATA[13:8] */
+ 0x1f87, /* SDTDATA[7:0] */
+ 0x1f89, /* ANTSNR[23:16] */
+ 0x1f8a, /* ANTSNR[15:8] */
+ 0x1f8b, /* ANTSNR[7:0] */
+ 0x1f8c, /* x x x x ANTFEC[13:8] */
+ 0x1f8d, /* ANTFEC[7:0] */
+ 0x1f8e, /* MAXCNT[7:0] */
+ 0x1f8f, /* SCANCNT[7:0] */
+ 0x1f91, /* MAXPW[23:16] */
+ 0x1f92, /* MAXPW[15:8] */
+ 0x1f93, /* MAXPW[7:0] */
+ 0x1f95, /* CURPWMSE[23:16] */
+ 0x1f96, /* CURPWMSE[15:8] */
+ 0x1f97, /* CURPWMSE[7:0] */
+#endif /* SMART_ANT */
+ 0x211f, /* 1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 */
+ 0x212a, /* EQAUTOST */
+ 0x2122, /* CHFAST[7:0] 01100000 */
+ 0x212b, /* FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 */
+ 0x212c, /* PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 */
+ 0x212d, /* 1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS */
+ 0x2135, /* DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 */
+ 0x2141, /* TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 */
+ 0x2162, /* AICCCTRLE */
+ 0x2173, /* PHNCNFCNT[7:0] 00000100 */
+ 0x2179, /* 1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 */
+ 0x217a, /* 1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 */
+ 0x217e, /* CNFCNTTPIF[7:0] 00001000 */
+ 0x217f, /* TPERRCNTTPIF[7:0] 00000001 */
+ 0x2180, /* x x x x x x FBDLYCIR[9:8] */
+ 0x2181, /* FBDLYCIR[7:0] */
+ 0x2185, /* MAXPWRMAIN[7:0] */
+ 0x2191, /* NCOMBDET x x x x x x x */
+ 0x2199, /* x MAINSTRON */
+ 0x219a, /* FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] */
+ 0x21a1, /* x x SNRREF[5:0] */
+ 0x2845, /* 1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 */
+ 0x2846, /* 1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 */
+ 0x2847, /* ENNOSIGDE */
+ 0x2849, /* 1'b1 1'b1 NOUSENOSI */
+ 0x284a, /* EQINITWAITTIME[7:0] 01100100 */
+ 0x3000, /* 1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM */
+ 0x3001, /* RPTRSTWAITTIME[7:0] (100msec) 00110010 */
+ 0x3031, /* FRAMELOC */
+ 0x3032, /* 1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 */
+ 0x30a9, /* VDLOCK_Q FRAMELOCK */
+ 0x30aa, /* MPEGLOCK */
+};
+
+#define numDumpRegs (ARRAY_SIZE(regtab))
+static u8 regval1[numDumpRegs] = {0, };
+static u8 regval2[numDumpRegs] = {0, };
+
+static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state)
+{
+ memset(regval2, 0xff, sizeof(regval2));
+ lgdt3306a_DumpRegs(state);
+}
+
+static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state)
+{
+ int i;
+ int sav_debug = debug;
+
+ if ((debug & DBG_DUMP) == 0)
+ return;
+ debug &= ~DBG_REG; /* suppress DBG_REG during reg dump */
+
+ lg_debug("\n");
+
+ for (i = 0; i < numDumpRegs; i++) {
+ lgdt3306a_read_reg(state, regtab[i], &regval1[i]);
+ if (regval1[i] != regval2[i]) {
+ lg_debug(" %04X = %02X\n", regtab[i], regval1[i]);
+ regval2[i] = regval1[i];
+ }
+ }
+ debug = sav_debug;
+}
+#endif /* DBG_DUMP */
+
+
+
+static const struct dvb_frontend_ops lgdt3306a_ops = {
+ .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
+ .info = {
+ .name = "LG Electronics LGDT3306A VSB/QAM Frontend",
+ .frequency_min_hz = 54 * MHz,
+ .frequency_max_hz = 858 * MHz,
+ .frequency_stepsize_hz = 62500,
+ .caps = FE_CAN_QAM_AUTO | FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
+ },
+ .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl,
+ .init = lgdt3306a_init,
+ .sleep = lgdt3306a_fe_sleep,
+ /* if this is set, it overrides the default swzigzag */
+ .tune = lgdt3306a_tune,
+ .set_frontend = lgdt3306a_set_parameters,
+ .get_frontend = lgdt3306a_get_frontend,
+ .get_frontend_algo = lgdt3306a_get_frontend_algo,
+ .get_tune_settings = lgdt3306a_get_tune_settings,
+ .read_status = lgdt3306a_read_status,
+ .read_ber = lgdt3306a_read_ber,
+ .read_signal_strength = lgdt3306a_read_signal_strength,
+ .read_snr = lgdt3306a_read_snr,
+ .read_ucblocks = lgdt3306a_read_ucblocks,
+ .release = lgdt3306a_release,
+ .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl,
+ .search = lgdt3306a_search,
+};
+
+static int lgdt3306a_select(struct i2c_mux_core *muxc, u32 chan)
+{
+ struct i2c_client *client = i2c_mux_priv(muxc);
+ struct lgdt3306a_state *state = i2c_get_clientdata(client);
+
+ return lgdt3306a_i2c_gate_ctrl(&state->frontend, 1);
+}
+
+static int lgdt3306a_deselect(struct i2c_mux_core *muxc, u32 chan)
+{
+ struct i2c_client *client = i2c_mux_priv(muxc);
+ struct lgdt3306a_state *state = i2c_get_clientdata(client);
+
+ return lgdt3306a_i2c_gate_ctrl(&state->frontend, 0);
+}
+
+static int lgdt3306a_probe(struct i2c_client *client)
+{
+ struct lgdt3306a_config *config;
+ struct lgdt3306a_state *state;
+ struct dvb_frontend *fe;
+ int ret;
+
+ config = kmemdup(client->dev.platform_data,
+ sizeof(struct lgdt3306a_config), GFP_KERNEL);
+ if (config == NULL) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ config->i2c_addr = client->addr;
+ fe = lgdt3306a_attach(config, client->adapter);
+ if (fe == NULL) {
+ ret = -ENODEV;
+ goto err_fe;
+ }
+
+ i2c_set_clientdata(client, fe->demodulator_priv);
+ state = fe->demodulator_priv;
+ state->frontend.ops.release = NULL;
+
+ /* create mux i2c adapter for tuner */
+ state->muxc = i2c_mux_alloc(client->adapter, &client->dev,
+ 1, 0, I2C_MUX_LOCKED,
+ lgdt3306a_select, lgdt3306a_deselect);
+ if (!state->muxc) {
+ ret = -ENOMEM;
+ goto err_kfree;
+ }
+ state->muxc->priv = client;
+ ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0);
+ if (ret)
+ goto err_kfree;
+
+ /* create dvb_frontend */
+ fe->ops.i2c_gate_ctrl = NULL;
+ *config->i2c_adapter = state->muxc->adapter[0];
+ *config->fe = fe;
+
+ dev_info(&client->dev, "LG Electronics LGDT3306A successfully identified\n");
+
+ return 0;
+
+err_kfree:
+ kfree(state);
+err_fe:
+ kfree(config);
+fail:
+ dev_warn(&client->dev, "probe failed = %d\n", ret);
+ return ret;
+}
+
+static void lgdt3306a_remove(struct i2c_client *client)
+{
+ struct lgdt3306a_state *state = i2c_get_clientdata(client);
+
+ i2c_mux_del_adapters(state->muxc);
+
+ state->frontend.ops.release = NULL;
+ state->frontend.demodulator_priv = NULL;
+
+ kfree(state->cfg);
+ kfree(state);
+}
+
+static const struct i2c_device_id lgdt3306a_id_table[] = {
+ {"lgdt3306a", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, lgdt3306a_id_table);
+
+static struct i2c_driver lgdt3306a_driver = {
+ .driver = {
+ .name = "lgdt3306a",
+ .suppress_bind_attrs = true,
+ },
+ .probe = lgdt3306a_probe,
+ .remove = lgdt3306a_remove,
+ .id_table = lgdt3306a_id_table,
+};
+
+module_i2c_driver(lgdt3306a_driver);
+
+MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver");
+MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 08:43:32 +0000