| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Manu Abraham | 2726 | 93.32% | 6 | 17.65% |
| Mauro Carvalho Chehab | 141 | 4.83% | 12 | 35.29% |
| Ales Jurik | 14 | 0.48% | 1 | 2.94% |
| Reinhard Nißl | 9 | 0.31% | 3 | 8.82% |
| Arnd Bergmann | 9 | 0.31% | 1 | 2.94% |
| Marko Schluessler | 5 | 0.17% | 2 | 5.88% |
| Peter Senna Tschudin | 4 | 0.14% | 1 | 2.94% |
| Julia Lawall | 4 | 0.14% | 2 | 5.88% |
| Tejun Heo | 3 | 0.10% | 1 | 2.94% |
| Thomas Gleixner | 2 | 0.07% | 1 | 2.94% |
| Alexander Shiyan | 1 | 0.03% | 1 | 2.94% |
| Lawrence Rust | 1 | 0.03% | 1 | 2.94% |
| Hans Werner | 1 | 0.03% | 1 | 2.94% |
| Lucas De Marchi | 1 | 0.03% | 1 | 2.94% |
| Total | 2921 | 34 |
// SPDX-License-Identifier: GPL-2.0-or-later /* STB6100 Silicon Tuner Copyright (C) Manu Abraham (abraham.manu@gmail.com) Copyright (C) ST Microelectronics */ #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/string.h> #include <media/dvb_frontend.h> #include "stb6100.h" static unsigned int verbose; module_param(verbose, int, 0644); /* Max transfer size done by I2C transfer functions */ #define MAX_XFER_SIZE 64 #define FE_ERROR 0 #define FE_NOTICE 1 #define FE_INFO 2 #define FE_DEBUG 3 #define dprintk(x, y, z, format, arg...) do { \ if (z) { \ if ((x > FE_ERROR) && (x > y)) \ printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \ else if ((x > FE_NOTICE) && (x > y)) \ printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \ else if ((x > FE_INFO) && (x > y)) \ printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \ else if ((x > FE_DEBUG) && (x > y)) \ printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \ } else { \ if (x > y) \ printk(format, ##arg); \ } \ } while (0) struct stb6100_lkup { u32 val_low; u32 val_high; u8 reg; }; static void stb6100_release(struct dvb_frontend *fe); static const struct stb6100_lkup lkup[] = { { 0, 950000, 0x0a }, { 950000, 1000000, 0x0a }, { 1000000, 1075000, 0x0c }, { 1075000, 1200000, 0x00 }, { 1200000, 1300000, 0x01 }, { 1300000, 1370000, 0x02 }, { 1370000, 1470000, 0x04 }, { 1470000, 1530000, 0x05 }, { 1530000, 1650000, 0x06 }, { 1650000, 1800000, 0x08 }, { 1800000, 1950000, 0x0a }, { 1950000, 2150000, 0x0c }, { 2150000, 9999999, 0x0c }, { 0, 0, 0x00 } }; /* Register names for easy debugging. */ static const char *stb6100_regnames[] = { [STB6100_LD] = "LD", [STB6100_VCO] = "VCO", [STB6100_NI] = "NI", [STB6100_NF_LSB] = "NF", [STB6100_K] = "K", [STB6100_G] = "G", [STB6100_F] = "F", [STB6100_DLB] = "DLB", [STB6100_TEST1] = "TEST1", [STB6100_FCCK] = "FCCK", [STB6100_LPEN] = "LPEN", [STB6100_TEST3] = "TEST3", }; /* Template for normalisation, i.e. setting unused or undocumented * bits as required according to the documentation. */ struct stb6100_regmask { u8 mask; u8 set; }; static const struct stb6100_regmask stb6100_template[] = { [STB6100_LD] = { 0xff, 0x00 }, [STB6100_VCO] = { 0xff, 0x00 }, [STB6100_NI] = { 0xff, 0x00 }, [STB6100_NF_LSB] = { 0xff, 0x00 }, [STB6100_K] = { 0xc7, 0x38 }, [STB6100_G] = { 0xef, 0x10 }, [STB6100_F] = { 0x1f, 0xc0 }, [STB6100_DLB] = { 0x38, 0xc4 }, [STB6100_TEST1] = { 0x00, 0x8f }, [STB6100_FCCK] = { 0x40, 0x0d }, [STB6100_LPEN] = { 0xf0, 0x0b }, [STB6100_TEST3] = { 0x00, 0xde }, }; /* * Currently unused. Some boards might need it in the future */ static __always_unused inline void stb6100_normalise_regs(u8 regs[]) { int i; for (i = 0; i < STB6100_NUMREGS; i++) regs[i] = (regs[i] & stb6100_template[i].mask) | stb6100_template[i].set; } static int stb6100_read_regs(struct stb6100_state *state, u8 regs[]) { int rc; struct i2c_msg msg = { .addr = state->config->tuner_address, .flags = I2C_M_RD, .buf = regs, .len = STB6100_NUMREGS }; rc = i2c_transfer(state->i2c, &msg, 1); if (unlikely(rc != 1)) { dprintk(verbose, FE_ERROR, 1, "Read (0x%x) err, rc=[%d]", state->config->tuner_address, rc); return -EREMOTEIO; } if (unlikely(verbose > FE_DEBUG)) { int i; dprintk(verbose, FE_DEBUG, 1, " Read from 0x%02x", state->config->tuner_address); for (i = 0; i < STB6100_NUMREGS; i++) dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[i], regs[i]); } return 0; } static int stb6100_read_reg(struct stb6100_state *state, u8 reg) { u8 regs[STB6100_NUMREGS]; struct i2c_msg msg = { .addr = state->config->tuner_address + reg, .flags = I2C_M_RD, .buf = regs, .len = 1 }; i2c_transfer(state->i2c, &msg, 1); if (unlikely(reg >= STB6100_NUMREGS)) { dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg); return -EINVAL; } if (unlikely(verbose > FE_DEBUG)) { dprintk(verbose, FE_DEBUG, 1, " Read from 0x%02x", state->config->tuner_address); dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[reg], regs[0]); } return (unsigned int)regs[0]; } static int stb6100_write_reg_range(struct stb6100_state *state, u8 buf[], int start, int len) { int rc; u8 cmdbuf[MAX_XFER_SIZE]; struct i2c_msg msg = { .addr = state->config->tuner_address, .flags = 0, .buf = cmdbuf, .len = len + 1 }; if (1 + len > sizeof(cmdbuf)) { printk(KERN_WARNING "%s: i2c wr: len=%d is too big!\n", KBUILD_MODNAME, len); return -EINVAL; } if (unlikely(start < 1 || start + len > STB6100_NUMREGS)) { dprintk(verbose, FE_ERROR, 1, "Invalid register range %d:%d", start, len); return -EINVAL; } memcpy(&cmdbuf[1], buf, len); cmdbuf[0] = start; if (unlikely(verbose > FE_DEBUG)) { int i; dprintk(verbose, FE_DEBUG, 1, " Write @ 0x%02x: [%d:%d]", state->config->tuner_address, start, len); for (i = 0; i < len; i++) dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[start + i], buf[i]); } rc = i2c_transfer(state->i2c, &msg, 1); if (unlikely(rc != 1)) { dprintk(verbose, FE_ERROR, 1, "(0x%x) write err [%d:%d], rc=[%d]", (unsigned int)state->config->tuner_address, start, len, rc); return -EREMOTEIO; } return 0; } static int stb6100_write_reg(struct stb6100_state *state, u8 reg, u8 data) { u8 tmp = data; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */ if (unlikely(reg >= STB6100_NUMREGS)) { dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg); return -EREMOTEIO; } tmp = (tmp & stb6100_template[reg].mask) | stb6100_template[reg].set; return stb6100_write_reg_range(state, &tmp, reg, 1); } static int stb6100_get_status(struct dvb_frontend *fe, u32 *status) { int rc; struct stb6100_state *state = fe->tuner_priv; rc = stb6100_read_reg(state, STB6100_LD); if (rc < 0) { dprintk(verbose, FE_ERROR, 1, "%s failed", __func__); return rc; } return (rc & STB6100_LD_LOCK) ? TUNER_STATUS_LOCKED : 0; } static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) { int rc; u8 f; u32 bw; struct stb6100_state *state = fe->tuner_priv; rc = stb6100_read_reg(state, STB6100_F); if (rc < 0) return rc; f = rc & STB6100_F_F; bw = (f + 5) * 2000; /* x2 for ZIF */ *bandwidth = state->bandwidth = bw * 1000; dprintk(verbose, FE_DEBUG, 1, "bandwidth = %u Hz", state->bandwidth); return 0; } static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth) { u32 tmp; int rc; struct stb6100_state *state = fe->tuner_priv; dprintk(verbose, FE_DEBUG, 1, "set bandwidth to %u Hz", bandwidth); bandwidth /= 2; /* ZIF */ if (bandwidth >= 36000000) /* F[4:0] BW/2 max =31+5=36 mhz for F=31 */ tmp = 31; else if (bandwidth <= 5000000) /* bw/2 min = 5Mhz for F=0 */ tmp = 0; else /* if 5 < bw/2 < 36 */ tmp = (bandwidth + 500000) / 1000000 - 5; /* Turn on LPF bandwidth setting clock control, * set bandwidth, wait 10ms, turn off. */ rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d | STB6100_FCCK_FCCK); if (rc < 0) return rc; rc = stb6100_write_reg(state, STB6100_F, 0xc0 | tmp); if (rc < 0) return rc; msleep(5); /* This is dangerous as another (related) thread may start */ rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d); if (rc < 0) return rc; msleep(10); /* This is dangerous as another (related) thread may start */ return 0; } static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency) { int rc; u32 nint, nfrac, fvco; int psd2, odiv; struct stb6100_state *state = fe->tuner_priv; u8 regs[STB6100_NUMREGS]; rc = stb6100_read_regs(state, regs); if (rc < 0) return rc; odiv = (regs[STB6100_VCO] & STB6100_VCO_ODIV) >> STB6100_VCO_ODIV_SHIFT; psd2 = (regs[STB6100_K] & STB6100_K_PSD2) >> STB6100_K_PSD2_SHIFT; nint = regs[STB6100_NI]; nfrac = ((regs[STB6100_K] & STB6100_K_NF_MSB) << 8) | regs[STB6100_NF_LSB]; fvco = (nfrac * state->reference >> (9 - psd2)) + (nint * state->reference << psd2); *frequency = state->frequency = fvco >> (odiv + 1); dprintk(verbose, FE_DEBUG, 1, "frequency = %u kHz, odiv = %u, psd2 = %u, fxtal = %u kHz, fvco = %u kHz, N(I) = %u, N(F) = %u", state->frequency, odiv, psd2, state->reference, fvco, nint, nfrac); return 0; } static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency) { int rc; const struct stb6100_lkup *ptr; struct stb6100_state *state = fe->tuner_priv; struct dtv_frontend_properties *p = &fe->dtv_property_cache; u32 srate = 0, fvco, nint, nfrac; u8 regs[STB6100_NUMREGS]; u8 g, psd2, odiv; dprintk(verbose, FE_DEBUG, 1, "Version 2010-8-14 13:51"); if (fe->ops.get_frontend) { dprintk(verbose, FE_DEBUG, 1, "Get frontend parameters"); fe->ops.get_frontend(fe, p); } srate = p->symbol_rate; /* Set up tuner cleanly, LPF calibration on */ rc = stb6100_write_reg(state, STB6100_FCCK, 0x4d | STB6100_FCCK_FCCK); if (rc < 0) return rc; /* allow LPF calibration */ /* PLL Loop disabled, bias on, VCO on, synth on */ regs[STB6100_LPEN] = 0xeb; rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN]); if (rc < 0) return rc; /* Program the registers with their data values */ /* VCO divide ratio (LO divide ratio, VCO prescaler enable). */ if (frequency <= 1075000) odiv = 1; else odiv = 0; /* VCO enabled, search clock off as per LL3.7, 3.4.1 */ regs[STB6100_VCO] = 0xe0 | (odiv << STB6100_VCO_ODIV_SHIFT); /* OSM */ for (ptr = lkup; (ptr->val_high != 0) && !CHKRANGE(frequency, ptr->val_low, ptr->val_high); ptr++); if (ptr->val_high == 0) { printk(KERN_ERR "%s: frequency out of range: %u kHz\n", __func__, frequency); return -EINVAL; } regs[STB6100_VCO] = (regs[STB6100_VCO] & ~STB6100_VCO_OSM) | ptr->reg; rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); if (rc < 0) return rc; if ((frequency > 1075000) && (frequency <= 1325000)) psd2 = 0; else psd2 = 1; /* F(VCO) = F(LO) * (ODIV == 0 ? 2 : 4) */ fvco = frequency << (1 + odiv); /* N(I) = floor(f(VCO) / (f(XTAL) * (PSD2 ? 2 : 1))) */ nint = fvco / (state->reference << psd2); /* N(F) = round(f(VCO) / f(XTAL) * (PSD2 ? 2 : 1) - N(I)) * 2 ^ 9 */ nfrac = DIV_ROUND_CLOSEST((fvco - (nint * state->reference << psd2)) << (9 - psd2), state->reference); /* NI */ regs[STB6100_NI] = nint; rc = stb6100_write_reg(state, STB6100_NI, regs[STB6100_NI]); if (rc < 0) return rc; /* NF */ regs[STB6100_NF_LSB] = nfrac; rc = stb6100_write_reg(state, STB6100_NF_LSB, regs[STB6100_NF_LSB]); if (rc < 0) return rc; /* K */ regs[STB6100_K] = (0x38 & ~STB6100_K_PSD2) | (psd2 << STB6100_K_PSD2_SHIFT); regs[STB6100_K] = (regs[STB6100_K] & ~STB6100_K_NF_MSB) | ((nfrac >> 8) & STB6100_K_NF_MSB); rc = stb6100_write_reg(state, STB6100_K, regs[STB6100_K]); if (rc < 0) return rc; /* G Baseband gain. */ if (srate >= 15000000) g = 9; /* +4 dB */ else if (srate >= 5000000) g = 11; /* +8 dB */ else g = 14; /* +14 dB */ regs[STB6100_G] = (0x10 & ~STB6100_G_G) | g; regs[STB6100_G] &= ~STB6100_G_GCT; /* mask GCT */ regs[STB6100_G] |= (1 << 5); /* 2Vp-p Mode */ rc = stb6100_write_reg(state, STB6100_G, regs[STB6100_G]); if (rc < 0) return rc; /* F we don't write as it is set up in BW set */ /* DLB set DC servo loop BW to 160Hz (LLA 3.8 / 2.1) */ regs[STB6100_DLB] = 0xcc; rc = stb6100_write_reg(state, STB6100_DLB, regs[STB6100_DLB]); if (rc < 0) return rc; dprintk(verbose, FE_DEBUG, 1, "frequency = %u, srate = %u, g = %u, odiv = %u, psd2 = %u, fxtal = %u, osm = %u, fvco = %u, N(I) = %u, N(F) = %u", frequency, srate, (unsigned int)g, (unsigned int)odiv, (unsigned int)psd2, state->reference, ptr->reg, fvco, nint, nfrac); /* Set up the test registers */ regs[STB6100_TEST1] = 0x8f; rc = stb6100_write_reg(state, STB6100_TEST1, regs[STB6100_TEST1]); if (rc < 0) return rc; regs[STB6100_TEST3] = 0xde; rc = stb6100_write_reg(state, STB6100_TEST3, regs[STB6100_TEST3]); if (rc < 0) return rc; /* Bring up tuner according to LLA 3.7 3.4.1, step 2 */ regs[STB6100_LPEN] = 0xfb; /* PLL Loop enabled, bias on, VCO on, synth on */ rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN]); if (rc < 0) return rc; msleep(2); /* Bring up tuner according to LLA 3.7 3.4.1, step 3 */ regs[STB6100_VCO] &= ~STB6100_VCO_OCK; /* VCO fast search */ rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); if (rc < 0) return rc; msleep(10); /* This is dangerous as another (related) thread may start */ /* wait for LO to lock */ regs[STB6100_VCO] &= ~STB6100_VCO_OSCH; /* vco search disabled */ regs[STB6100_VCO] |= STB6100_VCO_OCK; /* search clock off */ rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); if (rc < 0) return rc; rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d); if (rc < 0) return rc; /* Stop LPF calibration */ msleep(10); /* This is dangerous as another (related) thread may start */ /* wait for stabilisation, (should not be necessary) */ return 0; } static int stb6100_sleep(struct dvb_frontend *fe) { /* TODO: power down */ return 0; } static int stb6100_init(struct dvb_frontend *fe) { struct stb6100_state *state = fe->tuner_priv; int refclk = 27000000; /* Hz */ /* * iqsense = 1 * tunerstep = 125000 */ state->bandwidth = 36000000; /* Hz */ state->reference = refclk / 1000; /* kHz */ /* Set default bandwidth. Modified, PN 13-May-10 */ return 0; } static int stb6100_set_params(struct dvb_frontend *fe) { struct dtv_frontend_properties *c = &fe->dtv_property_cache; if (c->frequency > 0) stb6100_set_frequency(fe, c->frequency); if (c->bandwidth_hz > 0) stb6100_set_bandwidth(fe, c->bandwidth_hz); return 0; } static const struct dvb_tuner_ops stb6100_ops = { .info = { .name = "STB6100 Silicon Tuner", .frequency_min_hz = 950 * MHz, .frequency_max_hz = 2150 * MHz, }, .init = stb6100_init, .sleep = stb6100_sleep, .get_status = stb6100_get_status, .set_params = stb6100_set_params, .get_frequency = stb6100_get_frequency, .get_bandwidth = stb6100_get_bandwidth, .release = stb6100_release }; struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe, const struct stb6100_config *config, struct i2c_adapter *i2c) { struct stb6100_state *state = NULL; state = kzalloc(sizeof (struct stb6100_state), GFP_KERNEL); if (!state) return NULL; state->config = config; state->i2c = i2c; state->frontend = fe; state->reference = config->refclock / 1000; /* kHz */ fe->tuner_priv = state; fe->ops.tuner_ops = stb6100_ops; printk("%s: Attaching STB6100 \n", __func__); return fe; } static void stb6100_release(struct dvb_frontend *fe) { struct stb6100_state *state = fe->tuner_priv; fe->tuner_priv = NULL; kfree(state); } EXPORT_SYMBOL(stb6100_attach); MODULE_PARM_DESC(verbose, "Set Verbosity level"); MODULE_AUTHOR("Manu Abraham"); MODULE_DESCRIPTION("STB6100 Silicon tuner"); MODULE_LICENSE("GPL");
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