summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb/frontends/atbm8830.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/frontends/atbm8830.c')
-rw-r--r--drivers/media/dvb/frontends/atbm8830.c508
1 files changed, 0 insertions, 508 deletions
diff --git a/drivers/media/dvb/frontends/atbm8830.c b/drivers/media/dvb/frontends/atbm8830.c
deleted file mode 100644
index 4e11dc4b1335..000000000000
--- a/drivers/media/dvb/frontends/atbm8830.c
+++ /dev/null
@@ -1,508 +0,0 @@
-/*
- * Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
- * ATBM8830, ATBM8831
- *
- * Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com>
- *
- * 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 <asm/div64.h>
-#include "dvb_frontend.h"
-
-#include "atbm8830.h"
-#include "atbm8830_priv.h"
-
-#define dprintk(args...) \
- do { \
- if (debug) \
- printk(KERN_DEBUG "atbm8830: " args); \
- } while (0)
-
-static int debug;
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-static int atbm8830_write_reg(struct atbm_state *priv, u16 reg, u8 data)
-{
- int ret = 0;
- u8 dev_addr;
- u8 buf1[] = { reg >> 8, reg & 0xFF };
- u8 buf2[] = { data };
- struct i2c_msg msg1 = { .flags = 0, .buf = buf1, .len = 2 };
- struct i2c_msg msg2 = { .flags = 0, .buf = buf2, .len = 1 };
-
- dev_addr = priv->config->demod_address;
- msg1.addr = dev_addr;
- msg2.addr = dev_addr;
-
- if (debug >= 2)
- dprintk("%s: reg=0x%04X, data=0x%02X\n", __func__, reg, data);
-
- ret = i2c_transfer(priv->i2c, &msg1, 1);
- if (ret != 1)
- return -EIO;
-
- ret = i2c_transfer(priv->i2c, &msg2, 1);
- return (ret != 1) ? -EIO : 0;
-}
-
-static int atbm8830_read_reg(struct atbm_state *priv, u16 reg, u8 *p_data)
-{
- int ret;
- u8 dev_addr;
-
- u8 buf1[] = { reg >> 8, reg & 0xFF };
- u8 buf2[] = { 0 };
- struct i2c_msg msg1 = { .flags = 0, .buf = buf1, .len = 2 };
- struct i2c_msg msg2 = { .flags = I2C_M_RD, .buf = buf2, .len = 1 };
-
- dev_addr = priv->config->demod_address;
- msg1.addr = dev_addr;
- msg2.addr = dev_addr;
-
- ret = i2c_transfer(priv->i2c, &msg1, 1);
- if (ret != 1) {
- dprintk("%s: error reg=0x%04x, ret=%i\n", __func__, reg, ret);
- return -EIO;
- }
-
- ret = i2c_transfer(priv->i2c, &msg2, 1);
- if (ret != 1)
- return -EIO;
-
- *p_data = buf2[0];
- if (debug >= 2)
- dprintk("%s: reg=0x%04X, data=0x%02X\n",
- __func__, reg, buf2[0]);
-
- return 0;
-}
-
-/* Lock register latch so that multi-register read is atomic */
-static inline int atbm8830_reglatch_lock(struct atbm_state *priv, int lock)
-{
- return atbm8830_write_reg(priv, REG_READ_LATCH, lock ? 1 : 0);
-}
-
-static int set_osc_freq(struct atbm_state *priv, u32 freq /*in kHz*/)
-{
- u32 val;
- u64 t;
-
- /* 0x100000 * freq / 30.4MHz */
- t = (u64)0x100000 * freq;
- do_div(t, 30400);
- val = t;
-
- atbm8830_write_reg(priv, REG_OSC_CLK, val);
- atbm8830_write_reg(priv, REG_OSC_CLK + 1, val >> 8);
- atbm8830_write_reg(priv, REG_OSC_CLK + 2, val >> 16);
-
- return 0;
-}
-
-static int set_if_freq(struct atbm_state *priv, u32 freq /*in kHz*/)
-{
-
- u32 fs = priv->config->osc_clk_freq;
- u64 t;
- u32 val;
- u8 dat;
-
- if (freq != 0) {
- /* 2 * PI * (freq - fs) / fs * (2 ^ 22) */
- t = (u64) 2 * 31416 * (freq - fs);
- t <<= 22;
- do_div(t, fs);
- do_div(t, 1000);
- val = t;
-
- atbm8830_write_reg(priv, REG_TUNER_BASEBAND, 1);
- atbm8830_write_reg(priv, REG_IF_FREQ, val);
- atbm8830_write_reg(priv, REG_IF_FREQ+1, val >> 8);
- atbm8830_write_reg(priv, REG_IF_FREQ+2, val >> 16);
-
- atbm8830_read_reg(priv, REG_ADC_CONFIG, &dat);
- dat &= 0xFC;
- atbm8830_write_reg(priv, REG_ADC_CONFIG, dat);
- } else {
- /* Zero IF */
- atbm8830_write_reg(priv, REG_TUNER_BASEBAND, 0);
-
- atbm8830_read_reg(priv, REG_ADC_CONFIG, &dat);
- dat &= 0xFC;
- dat |= 0x02;
- atbm8830_write_reg(priv, REG_ADC_CONFIG, dat);
-
- if (priv->config->zif_swap_iq)
- atbm8830_write_reg(priv, REG_SWAP_I_Q, 0x03);
- else
- atbm8830_write_reg(priv, REG_SWAP_I_Q, 0x01);
- }
-
- return 0;
-}
-
-static int is_locked(struct atbm_state *priv, u8 *locked)
-{
- u8 status;
-
- atbm8830_read_reg(priv, REG_LOCK_STATUS, &status);
-
- if (locked != NULL)
- *locked = (status == 1);
- return 0;
-}
-
-static int set_agc_config(struct atbm_state *priv,
- u8 min, u8 max, u8 hold_loop)
-{
- /* no effect if both min and max are zero */
- if (!min && !max)
- return 0;
-
- atbm8830_write_reg(priv, REG_AGC_MIN, min);
- atbm8830_write_reg(priv, REG_AGC_MAX, max);
- atbm8830_write_reg(priv, REG_AGC_HOLD_LOOP, hold_loop);
-
- return 0;
-}
-
-static int set_static_channel_mode(struct atbm_state *priv)
-{
- int i;
-
- for (i = 0; i < 5; i++)
- atbm8830_write_reg(priv, 0x099B + i, 0x08);
-
- atbm8830_write_reg(priv, 0x095B, 0x7F);
- atbm8830_write_reg(priv, 0x09CB, 0x01);
- atbm8830_write_reg(priv, 0x09CC, 0x7F);
- atbm8830_write_reg(priv, 0x09CD, 0x7F);
- atbm8830_write_reg(priv, 0x0E01, 0x20);
-
- /* For single carrier */
- atbm8830_write_reg(priv, 0x0B03, 0x0A);
- atbm8830_write_reg(priv, 0x0935, 0x10);
- atbm8830_write_reg(priv, 0x0936, 0x08);
- atbm8830_write_reg(priv, 0x093E, 0x08);
- atbm8830_write_reg(priv, 0x096E, 0x06);
-
- /* frame_count_max0 */
- atbm8830_write_reg(priv, 0x0B09, 0x00);
- /* frame_count_max1 */
- atbm8830_write_reg(priv, 0x0B0A, 0x08);
-
- return 0;
-}
-
-static int set_ts_config(struct atbm_state *priv)
-{
- const struct atbm8830_config *cfg = priv->config;
-
- /*Set parallel/serial ts mode*/
- atbm8830_write_reg(priv, REG_TS_SERIAL, cfg->serial_ts ? 1 : 0);
- atbm8830_write_reg(priv, REG_TS_CLK_MODE, cfg->serial_ts ? 1 : 0);
- /*Set ts sampling edge*/
- atbm8830_write_reg(priv, REG_TS_SAMPLE_EDGE,
- cfg->ts_sampling_edge ? 1 : 0);
- /*Set ts clock freerun*/
- atbm8830_write_reg(priv, REG_TS_CLK_FREERUN,
- cfg->ts_clk_gated ? 0 : 1);
-
- return 0;
-}
-
-static int atbm8830_init(struct dvb_frontend *fe)
-{
- struct atbm_state *priv = fe->demodulator_priv;
- const struct atbm8830_config *cfg = priv->config;
-
- /*Set oscillator frequency*/
- set_osc_freq(priv, cfg->osc_clk_freq);
-
- /*Set IF frequency*/
- set_if_freq(priv, cfg->if_freq);
-
- /*Set AGC Config*/
- set_agc_config(priv, cfg->agc_min, cfg->agc_max,
- cfg->agc_hold_loop);
-
- /*Set static channel mode*/
- set_static_channel_mode(priv);
-
- set_ts_config(priv);
- /*Turn off DSP reset*/
- atbm8830_write_reg(priv, 0x000A, 0);
-
- /*SW version test*/
- atbm8830_write_reg(priv, 0x020C, 11);
-
- /* Run */
- atbm8830_write_reg(priv, REG_DEMOD_RUN, 1);
-
- return 0;
-}
-
-
-static void atbm8830_release(struct dvb_frontend *fe)
-{
- struct atbm_state *state = fe->demodulator_priv;
- dprintk("%s\n", __func__);
-
- kfree(state);
-}
-
-static int atbm8830_set_fe(struct dvb_frontend *fe)
-{
- struct atbm_state *priv = fe->demodulator_priv;
- int i;
- u8 locked = 0;
- dprintk("%s\n", __func__);
-
- /* set frequency */
- if (fe->ops.tuner_ops.set_params) {
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
- fe->ops.tuner_ops.set_params(fe);
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
- }
-
- /* start auto lock */
- for (i = 0; i < 10; i++) {
- mdelay(100);
- dprintk("Try %d\n", i);
- is_locked(priv, &locked);
- if (locked != 0) {
- dprintk("ATBM8830 locked!\n");
- break;
- }
- }
-
- return 0;
-}
-
-static int atbm8830_get_fe(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- dprintk("%s\n", __func__);
-
- /* TODO: get real readings from device */
- /* inversion status */
- c->inversion = INVERSION_OFF;
-
- /* bandwidth */
- c->bandwidth_hz = 8000000;
-
- c->code_rate_HP = FEC_AUTO;
- c->code_rate_LP = FEC_AUTO;
-
- c->modulation = QAM_AUTO;
-
- /* transmission mode */
- c->transmission_mode = TRANSMISSION_MODE_AUTO;
-
- /* guard interval */
- c->guard_interval = GUARD_INTERVAL_AUTO;
-
- /* hierarchy */
- c->hierarchy = HIERARCHY_NONE;
-
- return 0;
-}
-
-static int atbm8830_get_tune_settings(struct dvb_frontend *fe,
- struct dvb_frontend_tune_settings *fesettings)
-{
- fesettings->min_delay_ms = 0;
- fesettings->step_size = 0;
- fesettings->max_drift = 0;
- return 0;
-}
-
-static int atbm8830_read_status(struct dvb_frontend *fe, fe_status_t *fe_status)
-{
- struct atbm_state *priv = fe->demodulator_priv;
- u8 locked = 0;
- u8 agc_locked = 0;
-
- dprintk("%s\n", __func__);
- *fe_status = 0;
-
- is_locked(priv, &locked);
- if (locked) {
- *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
- FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
- }
- dprintk("%s: fe_status=0x%x\n", __func__, *fe_status);
-
- atbm8830_read_reg(priv, REG_AGC_LOCK, &agc_locked);
- dprintk("AGC Lock: %d\n", agc_locked);
-
- return 0;
-}
-
-static int atbm8830_read_ber(struct dvb_frontend *fe, u32 *ber)
-{
- struct atbm_state *priv = fe->demodulator_priv;
- u32 frame_err;
- u8 t;
-
- dprintk("%s\n", __func__);
-
- atbm8830_reglatch_lock(priv, 1);
-
- atbm8830_read_reg(priv, REG_FRAME_ERR_CNT + 1, &t);
- frame_err = t & 0x7F;
- frame_err <<= 8;
- atbm8830_read_reg(priv, REG_FRAME_ERR_CNT, &t);
- frame_err |= t;
-
- atbm8830_reglatch_lock(priv, 0);
-
- *ber = frame_err * 100 / 32767;
-
- dprintk("%s: ber=0x%x\n", __func__, *ber);
- return 0;
-}
-
-static int atbm8830_read_signal_strength(struct dvb_frontend *fe, u16 *signal)
-{
- struct atbm_state *priv = fe->demodulator_priv;
- u32 pwm;
- u8 t;
-
- dprintk("%s\n", __func__);
- atbm8830_reglatch_lock(priv, 1);
-
- atbm8830_read_reg(priv, REG_AGC_PWM_VAL + 1, &t);
- pwm = t & 0x03;
- pwm <<= 8;
- atbm8830_read_reg(priv, REG_AGC_PWM_VAL, &t);
- pwm |= t;
-
- atbm8830_reglatch_lock(priv, 0);
-
- dprintk("AGC PWM = 0x%02X\n", pwm);
- pwm = 0x400 - pwm;
-
- *signal = pwm * 0x10000 / 0x400;
-
- return 0;
-}
-
-static int atbm8830_read_snr(struct dvb_frontend *fe, u16 *snr)
-{
- dprintk("%s\n", __func__);
- *snr = 0;
- return 0;
-}
-
-static int atbm8830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
-{
- dprintk("%s\n", __func__);
- *ucblocks = 0;
- return 0;
-}
-
-static int atbm8830_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
-{
- struct atbm_state *priv = fe->demodulator_priv;
-
- return atbm8830_write_reg(priv, REG_I2C_GATE, enable ? 1 : 0);
-}
-
-static struct dvb_frontend_ops atbm8830_ops = {
- .delsys = { SYS_DTMB },
- .info = {
- .name = "AltoBeam ATBM8830/8831 DMB-TH",
- .frequency_min = 474000000,
- .frequency_max = 858000000,
- .frequency_stepsize = 10000,
- .caps =
- FE_CAN_FEC_AUTO |
- FE_CAN_QAM_AUTO |
- FE_CAN_TRANSMISSION_MODE_AUTO |
- FE_CAN_GUARD_INTERVAL_AUTO
- },
-
- .release = atbm8830_release,
-
- .init = atbm8830_init,
- .sleep = NULL,
- .write = NULL,
- .i2c_gate_ctrl = atbm8830_i2c_gate_ctrl,
-
- .set_frontend = atbm8830_set_fe,
- .get_frontend = atbm8830_get_fe,
- .get_tune_settings = atbm8830_get_tune_settings,
-
- .read_status = atbm8830_read_status,
- .read_ber = atbm8830_read_ber,
- .read_signal_strength = atbm8830_read_signal_strength,
- .read_snr = atbm8830_read_snr,
- .read_ucblocks = atbm8830_read_ucblocks,
-};
-
-struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
- struct i2c_adapter *i2c)
-{
- struct atbm_state *priv = NULL;
- u8 data = 0;
-
- dprintk("%s()\n", __func__);
-
- if (config == NULL || i2c == NULL)
- return NULL;
-
- priv = kzalloc(sizeof(struct atbm_state), GFP_KERNEL);
- if (priv == NULL)
- goto error_out;
-
- priv->config = config;
- priv->i2c = i2c;
-
- /* check if the demod is there */
- if (atbm8830_read_reg(priv, REG_CHIP_ID, &data) != 0) {
- dprintk("%s atbm8830/8831 not found at i2c addr 0x%02X\n",
- __func__, priv->config->demod_address);
- goto error_out;
- }
- dprintk("atbm8830 chip id: 0x%02X\n", data);
-
- memcpy(&priv->frontend.ops, &atbm8830_ops,
- sizeof(struct dvb_frontend_ops));
- priv->frontend.demodulator_priv = priv;
-
- atbm8830_init(&priv->frontend);
-
- atbm8830_i2c_gate_ctrl(&priv->frontend, 1);
-
- return &priv->frontend;
-
-error_out:
- dprintk("%s() error_out\n", __func__);
- kfree(priv);
- return NULL;
-
-}
-EXPORT_SYMBOL(atbm8830_attach);
-
-MODULE_DESCRIPTION("AltoBeam ATBM8830/8831 GB20600 demodulator driver");
-MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 19:53:18 +0100