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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 04:13:41 +0200 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 04:13:41 +0200 |
commit | 9a0bf528b4d66b605f02634236da085595c22101 (patch) | |
tree | e9ff008ff15c3ee5add6d41173ee5e61939480dd /drivers/media/dvb/frontends/ves1820.c | |
parent | [media] dvb: move the dvb core one level up (diff) | |
download | linux-9a0bf528b4d66b605f02634236da085595c22101.tar.xz linux-9a0bf528b4d66b605f02634236da085595c22101.zip |
[media] move the dvb/frontends to drivers/media/dvb-frontends
Raise the DVB frontends one level up, as the intention is to remove
the drivers/media/dvb directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/ves1820.c')
-rw-r--r-- | drivers/media/dvb/frontends/ves1820.c | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/drivers/media/dvb/frontends/ves1820.c b/drivers/media/dvb/frontends/ves1820.c deleted file mode 100644 index bb42b563c42d..000000000000 --- a/drivers/media/dvb/frontends/ves1820.c +++ /dev/null @@ -1,447 +0,0 @@ -/* - VES1820 - Single Chip Cable Channel Receiver driver module - - Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de> - - 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/delay.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <asm/div64.h> - -#include "dvb_frontend.h" -#include "ves1820.h" - - - -struct ves1820_state { - struct i2c_adapter* i2c; - /* configuration settings */ - const struct ves1820_config* config; - struct dvb_frontend frontend; - - /* private demodulator data */ - u8 reg0; - u8 pwm; -}; - - -static int verbose; - -static u8 ves1820_inittab[] = { - 0x69, 0x6A, 0x93, 0x1A, 0x12, 0x46, 0x26, 0x1A, - 0x43, 0x6A, 0xAA, 0xAA, 0x1E, 0x85, 0x43, 0x20, - 0xE0, 0x00, 0xA1, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, - 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x40 -}; - -static int ves1820_writereg(struct ves1820_state *state, u8 reg, u8 data) -{ - u8 buf[] = { 0x00, reg, data }; - struct i2c_msg msg = {.addr = state->config->demod_address,.flags = 0,.buf = buf,.len = 3 }; - int ret; - - ret = i2c_transfer(state->i2c, &msg, 1); - - if (ret != 1) - printk("ves1820: %s(): writereg error (reg == 0x%02x, " - "val == 0x%02x, ret == %i)\n", __func__, reg, data, ret); - - return (ret != 1) ? -EREMOTEIO : 0; -} - -static u8 ves1820_readreg(struct ves1820_state *state, u8 reg) -{ - u8 b0[] = { 0x00, reg }; - u8 b1[] = { 0 }; - struct i2c_msg msg[] = { - {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = 2}, - {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} - }; - int ret; - - ret = i2c_transfer(state->i2c, msg, 2); - - if (ret != 2) - printk("ves1820: %s(): readreg error (reg == 0x%02x, " - "ret == %i)\n", __func__, reg, ret); - - return b1[0]; -} - -static int ves1820_setup_reg0(struct ves1820_state *state, u8 reg0, fe_spectral_inversion_t inversion) -{ - reg0 |= state->reg0 & 0x62; - - if (INVERSION_ON == inversion) { - if (!state->config->invert) reg0 |= 0x20; - else reg0 &= ~0x20; - } else if (INVERSION_OFF == inversion) { - if (!state->config->invert) reg0 &= ~0x20; - else reg0 |= 0x20; - } - - ves1820_writereg(state, 0x00, reg0 & 0xfe); - ves1820_writereg(state, 0x00, reg0 | 0x01); - - state->reg0 = reg0; - - return 0; -} - -static int ves1820_set_symbolrate(struct ves1820_state *state, u32 symbolrate) -{ - s32 BDR; - s32 BDRI; - s16 SFIL = 0; - u16 NDEC = 0; - u32 ratio; - u32 fin; - u32 tmp; - u64 fptmp; - u64 fpxin; - - if (symbolrate > state->config->xin / 2) - symbolrate = state->config->xin / 2; - - if (symbolrate < 500000) - symbolrate = 500000; - - if (symbolrate < state->config->xin / 16) - NDEC = 1; - if (symbolrate < state->config->xin / 32) - NDEC = 2; - if (symbolrate < state->config->xin / 64) - NDEC = 3; - - /* yeuch! */ - fpxin = state->config->xin * 10; - fptmp = fpxin; do_div(fptmp, 123); - if (symbolrate < fptmp) - SFIL = 1; - fptmp = fpxin; do_div(fptmp, 160); - if (symbolrate < fptmp) - SFIL = 0; - fptmp = fpxin; do_div(fptmp, 246); - if (symbolrate < fptmp) - SFIL = 1; - fptmp = fpxin; do_div(fptmp, 320); - if (symbolrate < fptmp) - SFIL = 0; - fptmp = fpxin; do_div(fptmp, 492); - if (symbolrate < fptmp) - SFIL = 1; - fptmp = fpxin; do_div(fptmp, 640); - if (symbolrate < fptmp) - SFIL = 0; - fptmp = fpxin; do_div(fptmp, 984); - if (symbolrate < fptmp) - SFIL = 1; - - fin = state->config->xin >> 4; - symbolrate <<= NDEC; - ratio = (symbolrate << 4) / fin; - tmp = ((symbolrate << 4) % fin) << 8; - ratio = (ratio << 8) + tmp / fin; - tmp = (tmp % fin) << 8; - ratio = (ratio << 8) + DIV_ROUND_CLOSEST(tmp, fin); - - BDR = ratio; - BDRI = (((state->config->xin << 5) / symbolrate) + 1) / 2; - - if (BDRI > 0xFF) - BDRI = 0xFF; - - SFIL = (SFIL << 4) | ves1820_inittab[0x0E]; - - NDEC = (NDEC << 6) | ves1820_inittab[0x03]; - - ves1820_writereg(state, 0x03, NDEC); - ves1820_writereg(state, 0x0a, BDR & 0xff); - ves1820_writereg(state, 0x0b, (BDR >> 8) & 0xff); - ves1820_writereg(state, 0x0c, (BDR >> 16) & 0x3f); - - ves1820_writereg(state, 0x0d, BDRI); - ves1820_writereg(state, 0x0e, SFIL); - - return 0; -} - -static int ves1820_init(struct dvb_frontend* fe) -{ - struct ves1820_state* state = fe->demodulator_priv; - int i; - - ves1820_writereg(state, 0, 0); - - for (i = 0; i < sizeof(ves1820_inittab); i++) - ves1820_writereg(state, i, ves1820_inittab[i]); - if (state->config->selagc) - ves1820_writereg(state, 2, ves1820_inittab[2] | 0x08); - - ves1820_writereg(state, 0x34, state->pwm); - - return 0; -} - -static int ves1820_set_parameters(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct ves1820_state* state = fe->demodulator_priv; - static const u8 reg0x00[] = { 0x00, 0x04, 0x08, 0x0c, 0x10 }; - static const u8 reg0x01[] = { 140, 140, 106, 100, 92 }; - static const u8 reg0x05[] = { 135, 100, 70, 54, 38 }; - static const u8 reg0x08[] = { 162, 116, 67, 52, 35 }; - static const u8 reg0x09[] = { 145, 150, 106, 126, 107 }; - int real_qam = p->modulation - QAM_16; - - if (real_qam < 0 || real_qam > 4) - return -EINVAL; - - if (fe->ops.tuner_ops.set_params) { - fe->ops.tuner_ops.set_params(fe); - if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); - } - - ves1820_set_symbolrate(state, p->symbol_rate); - ves1820_writereg(state, 0x34, state->pwm); - - ves1820_writereg(state, 0x01, reg0x01[real_qam]); - ves1820_writereg(state, 0x05, reg0x05[real_qam]); - ves1820_writereg(state, 0x08, reg0x08[real_qam]); - ves1820_writereg(state, 0x09, reg0x09[real_qam]); - - ves1820_setup_reg0(state, reg0x00[real_qam], p->inversion); - ves1820_writereg(state, 2, ves1820_inittab[2] | (state->config->selagc ? 0x08 : 0)); - return 0; -} - -static int ves1820_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct ves1820_state* state = fe->demodulator_priv; - int sync; - - *status = 0; - sync = ves1820_readreg(state, 0x11); - - if (sync & 1) - *status |= FE_HAS_SIGNAL; - - if (sync & 2) - *status |= FE_HAS_CARRIER; - - if (sync & 2) /* XXX FIXME! */ - *status |= FE_HAS_VITERBI; - - if (sync & 4) - *status |= FE_HAS_SYNC; - - if (sync & 8) - *status |= FE_HAS_LOCK; - - return 0; -} - -static int ves1820_read_ber(struct dvb_frontend* fe, u32* ber) -{ - struct ves1820_state* state = fe->demodulator_priv; - - u32 _ber = ves1820_readreg(state, 0x14) | - (ves1820_readreg(state, 0x15) << 8) | - ((ves1820_readreg(state, 0x16) & 0x0f) << 16); - *ber = 10 * _ber; - - return 0; -} - -static int ves1820_read_signal_strength(struct dvb_frontend* fe, u16* strength) -{ - struct ves1820_state* state = fe->demodulator_priv; - - u8 gain = ves1820_readreg(state, 0x17); - *strength = (gain << 8) | gain; - - return 0; -} - -static int ves1820_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct ves1820_state* state = fe->demodulator_priv; - - u8 quality = ~ves1820_readreg(state, 0x18); - *snr = (quality << 8) | quality; - - return 0; -} - -static int ves1820_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) -{ - struct ves1820_state* state = fe->demodulator_priv; - - *ucblocks = ves1820_readreg(state, 0x13) & 0x7f; - if (*ucblocks == 0x7f) - *ucblocks = 0xffffffff; - - /* reset uncorrected block counter */ - ves1820_writereg(state, 0x10, ves1820_inittab[0x10] & 0xdf); - ves1820_writereg(state, 0x10, ves1820_inittab[0x10]); - - return 0; -} - -static int ves1820_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct ves1820_state* state = fe->demodulator_priv; - int sync; - s8 afc = 0; - - sync = ves1820_readreg(state, 0x11); - afc = ves1820_readreg(state, 0x19); - if (verbose) { - /* AFC only valid when carrier has been recovered */ - printk(sync & 2 ? "ves1820: AFC (%d) %dHz\n" : - "ves1820: [AFC (%d) %dHz]\n", afc, -((s32) p->symbol_rate * afc) >> 10); - } - - if (!state->config->invert) { - p->inversion = (state->reg0 & 0x20) ? INVERSION_ON : INVERSION_OFF; - } else { - p->inversion = (!(state->reg0 & 0x20)) ? INVERSION_ON : INVERSION_OFF; - } - - p->modulation = ((state->reg0 >> 2) & 7) + QAM_16; - - p->fec_inner = FEC_NONE; - - p->frequency = ((p->frequency + 31250) / 62500) * 62500; - if (sync & 2) - p->frequency -= ((s32) p->symbol_rate * afc) >> 10; - - return 0; -} - -static int ves1820_sleep(struct dvb_frontend* fe) -{ - struct ves1820_state* state = fe->demodulator_priv; - - ves1820_writereg(state, 0x1b, 0x02); /* pdown ADC */ - ves1820_writereg(state, 0x00, 0x80); /* standby */ - - return 0; -} - -static int ves1820_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) -{ - - fesettings->min_delay_ms = 200; - fesettings->step_size = 0; - fesettings->max_drift = 0; - return 0; -} - -static void ves1820_release(struct dvb_frontend* fe) -{ - struct ves1820_state* state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops ves1820_ops; - -struct dvb_frontend* ves1820_attach(const struct ves1820_config* config, - struct i2c_adapter* i2c, - u8 pwm) -{ - struct ves1820_state* state = NULL; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct ves1820_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->reg0 = ves1820_inittab[0]; - state->config = config; - state->i2c = i2c; - state->pwm = pwm; - - /* check if the demod is there */ - if ((ves1820_readreg(state, 0x1a) & 0xf0) != 0x70) - goto error; - - if (verbose) - printk("ves1820: pwm=0x%02x\n", state->pwm); - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &ves1820_ops, sizeof(struct dvb_frontend_ops)); - state->frontend.ops.info.symbol_rate_min = (state->config->xin / 2) / 64; /* SACLK/64 == (XIN/2)/64 */ - state->frontend.ops.info.symbol_rate_max = (state->config->xin / 2) / 4; /* SACLK/4 */ - state->frontend.demodulator_priv = state; - - return &state->frontend; - -error: - kfree(state); - return NULL; -} - -static struct dvb_frontend_ops ves1820_ops = { - .delsys = { SYS_DVBC_ANNEX_A }, - .info = { - .name = "VLSI VES1820 DVB-C", - .frequency_stepsize = 62500, - .frequency_min = 47000000, - .frequency_max = 862000000, - .caps = FE_CAN_QAM_16 | - FE_CAN_QAM_32 | - FE_CAN_QAM_64 | - FE_CAN_QAM_128 | - FE_CAN_QAM_256 | - FE_CAN_FEC_AUTO - }, - - .release = ves1820_release, - - .init = ves1820_init, - .sleep = ves1820_sleep, - - .set_frontend = ves1820_set_parameters, - .get_frontend = ves1820_get_frontend, - .get_tune_settings = ves1820_get_tune_settings, - - .read_status = ves1820_read_status, - .read_ber = ves1820_read_ber, - .read_signal_strength = ves1820_read_signal_strength, - .read_snr = ves1820_read_snr, - .read_ucblocks = ves1820_read_ucblocks, -}; - -module_param(verbose, int, 0644); -MODULE_PARM_DESC(verbose, "print AFC offset after tuning for debugging the PWM setting"); - -MODULE_DESCRIPTION("VLSI VES1820 DVB-C Demodulator driver"); -MODULE_AUTHOR("Ralph Metzler, Holger Waechtler"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(ves1820_attach); |