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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-13 23:13:41 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-13 23:13:41 -0300
commit9a0bf528b4d66b605f02634236da085595c22101 (patch)
treee9ff008ff15c3ee5add6d41173ee5e61939480dd /drivers/media/dvb/frontends/cx22700.c
parent[media] dvb: move the dvb core one level up (diff)
downloadlinux-dev-9a0bf528b4d66b605f02634236da085595c22101.tar.xz
linux-dev-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/cx22700.c')
-rw-r--r--drivers/media/dvb/frontends/cx22700.c443
1 files changed, 0 insertions, 443 deletions
diff --git a/drivers/media/dvb/frontends/cx22700.c b/drivers/media/dvb/frontends/cx22700.c
deleted file mode 100644
index f2a90f990ce3..000000000000
--- a/drivers/media/dvb/frontends/cx22700.c
+++ /dev/null
@@ -1,443 +0,0 @@
-/*
- Conexant cx22700 DVB OFDM demodulator driver
-
- Copyright (C) 2001-2002 Convergence Integrated Media GmbH
- Holger Waechtler <holger@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/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include "dvb_frontend.h"
-#include "cx22700.h"
-
-
-struct cx22700_state {
-
- struct i2c_adapter* i2c;
-
- const struct cx22700_config* config;
-
- struct dvb_frontend frontend;
-};
-
-
-static int debug;
-#define dprintk(args...) \
- do { \
- if (debug) printk(KERN_DEBUG "cx22700: " args); \
- } while (0)
-
-static u8 init_tab [] = {
- 0x04, 0x10,
- 0x05, 0x09,
- 0x06, 0x00,
- 0x08, 0x04,
- 0x09, 0x00,
- 0x0a, 0x01,
- 0x15, 0x40,
- 0x16, 0x10,
- 0x17, 0x87,
- 0x18, 0x17,
- 0x1a, 0x10,
- 0x25, 0x04,
- 0x2e, 0x00,
- 0x39, 0x00,
- 0x3a, 0x04,
- 0x45, 0x08,
- 0x46, 0x02,
- 0x47, 0x05,
-};
-
-
-static int cx22700_writereg (struct cx22700_state* state, u8 reg, u8 data)
-{
- int ret;
- u8 buf [] = { reg, data };
- struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
-
- dprintk ("%s\n", __func__);
-
- ret = i2c_transfer (state->i2c, &msg, 1);
-
- if (ret != 1)
- printk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n",
- __func__, reg, data, ret);
-
- return (ret != 1) ? -1 : 0;
-}
-
-static int cx22700_readreg (struct cx22700_state* state, u8 reg)
-{
- int ret;
- u8 b0 [] = { reg };
- u8 b1 [] = { 0 };
- struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
- { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
-
- dprintk ("%s\n", __func__);
-
- ret = i2c_transfer (state->i2c, msg, 2);
-
- if (ret != 2) return -EIO;
-
- return b1[0];
-}
-
-static int cx22700_set_inversion (struct cx22700_state* state, int inversion)
-{
- u8 val;
-
- dprintk ("%s\n", __func__);
-
- switch (inversion) {
- case INVERSION_AUTO:
- return -EOPNOTSUPP;
- case INVERSION_ON:
- val = cx22700_readreg (state, 0x09);
- return cx22700_writereg (state, 0x09, val | 0x01);
- case INVERSION_OFF:
- val = cx22700_readreg (state, 0x09);
- return cx22700_writereg (state, 0x09, val & 0xfe);
- default:
- return -EINVAL;
- }
-}
-
-static int cx22700_set_tps(struct cx22700_state *state,
- struct dtv_frontend_properties *p)
-{
- static const u8 qam_tab [4] = { 0, 1, 0, 2 };
- static const u8 fec_tab [6] = { 0, 1, 2, 0, 3, 4 };
- u8 val;
-
- dprintk ("%s\n", __func__);
-
- if (p->code_rate_HP < FEC_1_2 || p->code_rate_HP > FEC_7_8)
- return -EINVAL;
-
- if (p->code_rate_LP < FEC_1_2 || p->code_rate_LP > FEC_7_8)
- return -EINVAL;
-
- if (p->code_rate_HP == FEC_4_5 || p->code_rate_LP == FEC_4_5)
- return -EINVAL;
-
- if (p->guard_interval < GUARD_INTERVAL_1_32 ||
- p->guard_interval > GUARD_INTERVAL_1_4)
- return -EINVAL;
-
- if (p->transmission_mode != TRANSMISSION_MODE_2K &&
- p->transmission_mode != TRANSMISSION_MODE_8K)
- return -EINVAL;
-
- if (p->modulation != QPSK &&
- p->modulation != QAM_16 &&
- p->modulation != QAM_64)
- return -EINVAL;
-
- if (p->hierarchy < HIERARCHY_NONE ||
- p->hierarchy > HIERARCHY_4)
- return -EINVAL;
-
- if (p->bandwidth_hz > 8000000 || p->bandwidth_hz < 6000000)
- return -EINVAL;
-
- if (p->bandwidth_hz == 7000000)
- cx22700_writereg (state, 0x09, cx22700_readreg (state, 0x09 | 0x10));
- else
- cx22700_writereg (state, 0x09, cx22700_readreg (state, 0x09 & ~0x10));
-
- val = qam_tab[p->modulation - QPSK];
- val |= p->hierarchy - HIERARCHY_NONE;
-
- cx22700_writereg (state, 0x04, val);
-
- val = fec_tab[p->code_rate_HP - FEC_1_2] << 3;
- val |= fec_tab[p->code_rate_LP - FEC_1_2];
-
- cx22700_writereg (state, 0x05, val);
-
- val = (p->guard_interval - GUARD_INTERVAL_1_32) << 2;
- val |= p->transmission_mode - TRANSMISSION_MODE_2K;
-
- cx22700_writereg (state, 0x06, val);
-
- cx22700_writereg (state, 0x08, 0x04 | 0x02); /* use user tps parameters */
- cx22700_writereg (state, 0x08, 0x04); /* restart acquisition */
-
- return 0;
-}
-
-static int cx22700_get_tps(struct cx22700_state *state,
- struct dtv_frontend_properties *p)
-{
- static const fe_modulation_t qam_tab [3] = { QPSK, QAM_16, QAM_64 };
- static const fe_code_rate_t fec_tab [5] = { FEC_1_2, FEC_2_3, FEC_3_4,
- FEC_5_6, FEC_7_8 };
- u8 val;
-
- dprintk ("%s\n", __func__);
-
- if (!(cx22700_readreg(state, 0x07) & 0x20)) /* tps valid? */
- return -EAGAIN;
-
- val = cx22700_readreg (state, 0x01);
-
- if ((val & 0x7) > 4)
- p->hierarchy = HIERARCHY_AUTO;
- else
- p->hierarchy = HIERARCHY_NONE + (val & 0x7);
-
- if (((val >> 3) & 0x3) > 2)
- p->modulation = QAM_AUTO;
- else
- p->modulation = qam_tab[(val >> 3) & 0x3];
-
- val = cx22700_readreg (state, 0x02);
-
- if (((val >> 3) & 0x07) > 4)
- p->code_rate_HP = FEC_AUTO;
- else
- p->code_rate_HP = fec_tab[(val >> 3) & 0x07];
-
- if ((val & 0x07) > 4)
- p->code_rate_LP = FEC_AUTO;
- else
- p->code_rate_LP = fec_tab[val & 0x07];
-
- val = cx22700_readreg (state, 0x03);
-
- p->guard_interval = GUARD_INTERVAL_1_32 + ((val >> 6) & 0x3);
- p->transmission_mode = TRANSMISSION_MODE_2K + ((val >> 5) & 0x1);
-
- return 0;
-}
-
-static int cx22700_init (struct dvb_frontend* fe)
-
-{ struct cx22700_state* state = fe->demodulator_priv;
- int i;
-
- dprintk("cx22700_init: init chip\n");
-
- cx22700_writereg (state, 0x00, 0x02); /* soft reset */
- cx22700_writereg (state, 0x00, 0x00);
-
- msleep(10);
-
- for (i=0; i<sizeof(init_tab); i+=2)
- cx22700_writereg (state, init_tab[i], init_tab[i+1]);
-
- cx22700_writereg (state, 0x00, 0x01);
-
- return 0;
-}
-
-static int cx22700_read_status(struct dvb_frontend* fe, fe_status_t* status)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
- | (cx22700_readreg (state, 0x0e) << 1);
- u8 sync = cx22700_readreg (state, 0x07);
-
- *status = 0;
-
- if (rs_ber < 0xff00)
- *status |= FE_HAS_SIGNAL;
-
- if (sync & 0x20)
- *status |= FE_HAS_CARRIER;
-
- if (sync & 0x10)
- *status |= FE_HAS_VITERBI;
-
- if (sync & 0x10)
- *status |= FE_HAS_SYNC;
-
- if (*status == 0x0f)
- *status |= FE_HAS_LOCK;
-
- return 0;
-}
-
-static int cx22700_read_ber(struct dvb_frontend* fe, u32* ber)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- *ber = cx22700_readreg (state, 0x0c) & 0x7f;
- cx22700_writereg (state, 0x0c, 0x00);
-
- return 0;
-}
-
-static int cx22700_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
- | (cx22700_readreg (state, 0x0e) << 1);
- *signal_strength = ~rs_ber;
-
- return 0;
-}
-
-static int cx22700_read_snr(struct dvb_frontend* fe, u16* snr)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
- | (cx22700_readreg (state, 0x0e) << 1);
- *snr = ~rs_ber;
-
- return 0;
-}
-
-static int cx22700_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- *ucblocks = cx22700_readreg (state, 0x0f);
- cx22700_writereg (state, 0x0f, 0x00);
-
- return 0;
-}
-
-static int cx22700_set_frontend(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct cx22700_state* state = fe->demodulator_priv;
-
- cx22700_writereg (state, 0x00, 0x02); /* XXX CHECKME: soft reset*/
- cx22700_writereg (state, 0x00, 0x00);
-
- 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);
- }
-
- cx22700_set_inversion(state, c->inversion);
- cx22700_set_tps(state, c);
- cx22700_writereg (state, 0x37, 0x01); /* PAL loop filter off */
- cx22700_writereg (state, 0x00, 0x01); /* restart acquire */
-
- return 0;
-}
-
-static int cx22700_get_frontend(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct cx22700_state* state = fe->demodulator_priv;
- u8 reg09 = cx22700_readreg (state, 0x09);
-
- c->inversion = reg09 & 0x1 ? INVERSION_ON : INVERSION_OFF;
- return cx22700_get_tps(state, c);
-}
-
-static int cx22700_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
-{
- struct cx22700_state* state = fe->demodulator_priv;
-
- if (enable) {
- return cx22700_writereg(state, 0x0a, 0x00);
- } else {
- return cx22700_writereg(state, 0x0a, 0x01);
- }
-}
-
-static int cx22700_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
-{
- fesettings->min_delay_ms = 150;
- fesettings->step_size = 166667;
- fesettings->max_drift = 166667*2;
- return 0;
-}
-
-static void cx22700_release(struct dvb_frontend* fe)
-{
- struct cx22700_state* state = fe->demodulator_priv;
- kfree(state);
-}
-
-static struct dvb_frontend_ops cx22700_ops;
-
-struct dvb_frontend* cx22700_attach(const struct cx22700_config* config,
- struct i2c_adapter* i2c)
-{
- struct cx22700_state* state = NULL;
-
- /* allocate memory for the internal state */
- state = kzalloc(sizeof(struct cx22700_state), GFP_KERNEL);
- if (state == NULL) goto error;
-
- /* setup the state */
- state->config = config;
- state->i2c = i2c;
-
- /* check if the demod is there */
- if (cx22700_readreg(state, 0x07) < 0) goto error;
-
- /* create dvb_frontend */
- memcpy(&state->frontend.ops, &cx22700_ops, sizeof(struct dvb_frontend_ops));
- state->frontend.demodulator_priv = state;
- return &state->frontend;
-
-error:
- kfree(state);
- return NULL;
-}
-
-static struct dvb_frontend_ops cx22700_ops = {
- .delsys = { SYS_DVBT },
- .info = {
- .name = "Conexant CX22700 DVB-T",
- .frequency_min = 470000000,
- .frequency_max = 860000000,
- .frequency_stepsize = 166667,
- .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
- FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
- FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
- FE_CAN_RECOVER
- },
-
- .release = cx22700_release,
-
- .init = cx22700_init,
- .i2c_gate_ctrl = cx22700_i2c_gate_ctrl,
-
- .set_frontend = cx22700_set_frontend,
- .get_frontend = cx22700_get_frontend,
- .get_tune_settings = cx22700_get_tune_settings,
-
- .read_status = cx22700_read_status,
- .read_ber = cx22700_read_ber,
- .read_signal_strength = cx22700_read_signal_strength,
- .read_snr = cx22700_read_snr,
- .read_ucblocks = cx22700_read_ucblocks,
-};
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-MODULE_DESCRIPTION("Conexant CX22700 DVB-T Demodulator driver");
-MODULE_AUTHOR("Holger Waechtler");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(cx22700_attach);