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-rw-r--r--drivers/media/dvb/frontends/sp8870.c620
1 files changed, 0 insertions, 620 deletions
diff --git a/drivers/media/dvb/frontends/sp8870.c b/drivers/media/dvb/frontends/sp8870.c
deleted file mode 100644
index e37274c8f14..00000000000
--- a/drivers/media/dvb/frontends/sp8870.c
+++ /dev/null
@@ -1,620 +0,0 @@
-/*
- Driver for Spase SP8870 demodulator
-
- Copyright (C) 1999 Juergen Peitz
-
- 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.
-
-*/
-/*
- * This driver needs external firmware. Please use the command
- * "<kerneldir>/Documentation/dvb/get_dvb_firmware alps_tdlb7" to
- * download/extract it, and then copy it to /usr/lib/hotplug/firmware
- * or /lib/firmware (depending on configuration of firmware hotplug).
- */
-#define SP8870_DEFAULT_FIRMWARE "dvb-fe-sp8870.fw"
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/firmware.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-#include "sp8870.h"
-
-
-struct sp8870_state {
-
- struct i2c_adapter* i2c;
-
- const struct sp8870_config* config;
-
- struct dvb_frontend frontend;
-
- /* demodulator private data */
- u8 initialised:1;
-};
-
-static int debug;
-#define dprintk(args...) \
- do { \
- if (debug) printk(KERN_DEBUG "sp8870: " args); \
- } while (0)
-
-/* firmware size for sp8870 */
-#define SP8870_FIRMWARE_SIZE 16382
-
-/* starting point for firmware in file 'Sc_main.mc' */
-#define SP8870_FIRMWARE_OFFSET 0x0A
-
-static int sp8870_writereg (struct sp8870_state* state, u16 reg, u16 data)
-{
- u8 buf [] = { reg >> 8, reg & 0xff, data >> 8, data & 0xff };
- struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 4 };
- int err;
-
- if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
- dprintk ("%s: writereg error (err == %i, reg == 0x%02x, data == 0x%02x)\n", __func__, err, reg, data);
- return -EREMOTEIO;
- }
-
- return 0;
-}
-
-static int sp8870_readreg (struct sp8870_state* state, u16 reg)
-{
- int ret;
- u8 b0 [] = { reg >> 8 , reg & 0xff };
- u8 b1 [] = { 0, 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 = 2 } };
-
- ret = i2c_transfer (state->i2c, msg, 2);
-
- if (ret != 2) {
- dprintk("%s: readreg error (ret == %i)\n", __func__, ret);
- return -1;
- }
-
- return (b1[0] << 8 | b1[1]);
-}
-
-static int sp8870_firmware_upload (struct sp8870_state* state, const struct firmware *fw)
-{
- struct i2c_msg msg;
- const char *fw_buf = fw->data;
- int fw_pos;
- u8 tx_buf[255];
- int tx_len;
- int err = 0;
-
- dprintk ("%s: ...\n", __func__);
-
- if (fw->size < SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET)
- return -EINVAL;
-
- // system controller stop
- sp8870_writereg(state, 0x0F00, 0x0000);
-
- // instruction RAM register hiword
- sp8870_writereg(state, 0x8F08, ((SP8870_FIRMWARE_SIZE / 2) & 0xFFFF));
-
- // instruction RAM MWR
- sp8870_writereg(state, 0x8F0A, ((SP8870_FIRMWARE_SIZE / 2) >> 16));
-
- // do firmware upload
- fw_pos = SP8870_FIRMWARE_OFFSET;
- while (fw_pos < SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET){
- tx_len = (fw_pos <= SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET - 252) ? 252 : SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET - fw_pos;
- // write register 0xCF0A
- tx_buf[0] = 0xCF;
- tx_buf[1] = 0x0A;
- memcpy(&tx_buf[2], fw_buf + fw_pos, tx_len);
- msg.addr = state->config->demod_address;
- msg.flags = 0;
- msg.buf = tx_buf;
- msg.len = tx_len + 2;
- if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
- printk("%s: firmware upload failed!\n", __func__);
- printk ("%s: i2c error (err == %i)\n", __func__, err);
- return err;
- }
- fw_pos += tx_len;
- }
-
- dprintk ("%s: done!\n", __func__);
- return 0;
-};
-
-static void sp8870_microcontroller_stop (struct sp8870_state* state)
-{
- sp8870_writereg(state, 0x0F08, 0x000);
- sp8870_writereg(state, 0x0F09, 0x000);
-
- // microcontroller STOP
- sp8870_writereg(state, 0x0F00, 0x000);
-}
-
-static void sp8870_microcontroller_start (struct sp8870_state* state)
-{
- sp8870_writereg(state, 0x0F08, 0x000);
- sp8870_writereg(state, 0x0F09, 0x000);
-
- // microcontroller START
- sp8870_writereg(state, 0x0F00, 0x001);
- // not documented but if we don't read 0x0D01 out here
- // we don't get a correct data valid signal
- sp8870_readreg(state, 0x0D01);
-}
-
-static int sp8870_read_data_valid_signal(struct sp8870_state* state)
-{
- return (sp8870_readreg(state, 0x0D02) > 0);
-}
-
-static int configure_reg0xc05 (struct dtv_frontend_properties *p, u16 *reg0xc05)
-{
- int known_parameters = 1;
-
- *reg0xc05 = 0x000;
-
- switch (p->modulation) {
- case QPSK:
- break;
- case QAM_16:
- *reg0xc05 |= (1 << 10);
- break;
- case QAM_64:
- *reg0xc05 |= (2 << 10);
- break;
- case QAM_AUTO:
- known_parameters = 0;
- break;
- default:
- return -EINVAL;
- };
-
- switch (p->hierarchy) {
- case HIERARCHY_NONE:
- break;
- case HIERARCHY_1:
- *reg0xc05 |= (1 << 7);
- break;
- case HIERARCHY_2:
- *reg0xc05 |= (2 << 7);
- break;
- case HIERARCHY_4:
- *reg0xc05 |= (3 << 7);
- break;
- case HIERARCHY_AUTO:
- known_parameters = 0;
- break;
- default:
- return -EINVAL;
- };
-
- switch (p->code_rate_HP) {
- case FEC_1_2:
- break;
- case FEC_2_3:
- *reg0xc05 |= (1 << 3);
- break;
- case FEC_3_4:
- *reg0xc05 |= (2 << 3);
- break;
- case FEC_5_6:
- *reg0xc05 |= (3 << 3);
- break;
- case FEC_7_8:
- *reg0xc05 |= (4 << 3);
- break;
- case FEC_AUTO:
- known_parameters = 0;
- break;
- default:
- return -EINVAL;
- };
-
- if (known_parameters)
- *reg0xc05 |= (2 << 1); /* use specified parameters */
- else
- *reg0xc05 |= (1 << 1); /* enable autoprobing */
-
- return 0;
-}
-
-static int sp8870_wake_up(struct sp8870_state* state)
-{
- // enable TS output and interface pins
- return sp8870_writereg(state, 0xC18, 0x00D);
-}
-
-static int sp8870_set_frontend_parameters(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *p = &fe->dtv_property_cache;
- struct sp8870_state* state = fe->demodulator_priv;
- int err;
- u16 reg0xc05;
-
- if ((err = configure_reg0xc05(p, &reg0xc05)))
- return err;
-
- // system controller stop
- sp8870_microcontroller_stop(state);
-
- // set tuner parameters
- 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);
- }
-
- // sample rate correction bit [23..17]
- sp8870_writereg(state, 0x0319, 0x000A);
-
- // sample rate correction bit [16..0]
- sp8870_writereg(state, 0x031A, 0x0AAB);
-
- // integer carrier offset
- sp8870_writereg(state, 0x0309, 0x0400);
-
- // fractional carrier offset
- sp8870_writereg(state, 0x030A, 0x0000);
-
- // filter for 6/7/8 Mhz channel
- if (p->bandwidth_hz == 6000000)
- sp8870_writereg(state, 0x0311, 0x0002);
- else if (p->bandwidth_hz == 7000000)
- sp8870_writereg(state, 0x0311, 0x0001);
- else
- sp8870_writereg(state, 0x0311, 0x0000);
-
- // scan order: 2k first = 0x0000, 8k first = 0x0001
- if (p->transmission_mode == TRANSMISSION_MODE_2K)
- sp8870_writereg(state, 0x0338, 0x0000);
- else
- sp8870_writereg(state, 0x0338, 0x0001);
-
- sp8870_writereg(state, 0xc05, reg0xc05);
-
- // read status reg in order to clear pending irqs
- sp8870_readreg(state, 0x200);
-
- // system controller start
- sp8870_microcontroller_start(state);
-
- return 0;
-}
-
-static int sp8870_init (struct dvb_frontend* fe)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- const struct firmware *fw = NULL;
-
- sp8870_wake_up(state);
- if (state->initialised) return 0;
- state->initialised = 1;
-
- dprintk ("%s\n", __func__);
-
-
- /* request the firmware, this will block until someone uploads it */
- printk("sp8870: waiting for firmware upload (%s)...\n", SP8870_DEFAULT_FIRMWARE);
- if (state->config->request_firmware(fe, &fw, SP8870_DEFAULT_FIRMWARE)) {
- printk("sp8870: no firmware upload (timeout or file not found?)\n");
- return -EIO;
- }
-
- if (sp8870_firmware_upload(state, fw)) {
- printk("sp8870: writing firmware to device failed\n");
- release_firmware(fw);
- return -EIO;
- }
- release_firmware(fw);
- printk("sp8870: firmware upload complete\n");
-
- /* enable TS output and interface pins */
- sp8870_writereg(state, 0xc18, 0x00d);
-
- // system controller stop
- sp8870_microcontroller_stop(state);
-
- // ADC mode
- sp8870_writereg(state, 0x0301, 0x0003);
-
- // Reed Solomon parity bytes passed to output
- sp8870_writereg(state, 0x0C13, 0x0001);
-
- // MPEG clock is suppressed if no valid data
- sp8870_writereg(state, 0x0C14, 0x0001);
-
- /* bit 0x010: enable data valid signal */
- sp8870_writereg(state, 0x0D00, 0x010);
- sp8870_writereg(state, 0x0D01, 0x000);
-
- return 0;
-}
-
-static int sp8870_read_status (struct dvb_frontend* fe, fe_status_t * fe_status)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- int status;
- int signal;
-
- *fe_status = 0;
-
- status = sp8870_readreg (state, 0x0200);
- if (status < 0)
- return -EIO;
-
- signal = sp8870_readreg (state, 0x0303);
- if (signal < 0)
- return -EIO;
-
- if (signal > 0x0F)
- *fe_status |= FE_HAS_SIGNAL;
- if (status & 0x08)
- *fe_status |= FE_HAS_SYNC;
- if (status & 0x04)
- *fe_status |= FE_HAS_LOCK | FE_HAS_CARRIER | FE_HAS_VITERBI;
-
- return 0;
-}
-
-static int sp8870_read_ber (struct dvb_frontend* fe, u32 * ber)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- int ret;
- u32 tmp;
-
- *ber = 0;
-
- ret = sp8870_readreg(state, 0xC08);
- if (ret < 0)
- return -EIO;
-
- tmp = ret & 0x3F;
-
- ret = sp8870_readreg(state, 0xC07);
- if (ret < 0)
- return -EIO;
-
- tmp = ret << 6;
-
- if (tmp >= 0x3FFF0)
- tmp = ~0;
-
- *ber = tmp;
-
- return 0;
-}
-
-static int sp8870_read_signal_strength(struct dvb_frontend* fe, u16 * signal)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- int ret;
- u16 tmp;
-
- *signal = 0;
-
- ret = sp8870_readreg (state, 0x306);
- if (ret < 0)
- return -EIO;
-
- tmp = ret << 8;
-
- ret = sp8870_readreg (state, 0x303);
- if (ret < 0)
- return -EIO;
-
- tmp |= ret;
-
- if (tmp)
- *signal = 0xFFFF - tmp;
-
- return 0;
-}
-
-static int sp8870_read_uncorrected_blocks (struct dvb_frontend* fe, u32* ublocks)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- int ret;
-
- *ublocks = 0;
-
- ret = sp8870_readreg(state, 0xC0C);
- if (ret < 0)
- return -EIO;
-
- if (ret == 0xFFFF)
- ret = ~0;
-
- *ublocks = ret;
-
- return 0;
-}
-
-/* number of trials to recover from lockup */
-#define MAXTRIALS 5
-/* maximum checks for data valid signal */
-#define MAXCHECKS 100
-
-/* only for debugging: counter for detected lockups */
-static int lockups;
-/* only for debugging: counter for channel switches */
-static int switches;
-
-static int sp8870_set_frontend(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *p = &fe->dtv_property_cache;
- struct sp8870_state* state = fe->demodulator_priv;
-
- /*
- The firmware of the sp8870 sometimes locks up after setting frontend parameters.
- We try to detect this by checking the data valid signal.
- If it is not set after MAXCHECKS we try to recover the lockup by setting
- the frontend parameters again.
- */
-
- int err = 0;
- int valid = 0;
- int trials = 0;
- int check_count = 0;
-
- dprintk("%s: frequency = %i\n", __func__, p->frequency);
-
- for (trials = 1; trials <= MAXTRIALS; trials++) {
-
- err = sp8870_set_frontend_parameters(fe);
- if (err)
- return err;
-
- for (check_count = 0; check_count < MAXCHECKS; check_count++) {
-// valid = ((sp8870_readreg(i2c, 0x0200) & 4) == 0);
- valid = sp8870_read_data_valid_signal(state);
- if (valid) {
- dprintk("%s: delay = %i usec\n",
- __func__, check_count * 10);
- break;
- }
- udelay(10);
- }
- if (valid)
- break;
- }
-
- if (!valid) {
- printk("%s: firmware crash!!!!!!\n", __func__);
- return -EIO;
- }
-
- if (debug) {
- if (valid) {
- if (trials > 1) {
- printk("%s: firmware lockup!!!\n", __func__);
- printk("%s: recovered after %i trial(s))\n", __func__, trials - 1);
- lockups++;
- }
- }
- switches++;
- printk("%s: switches = %i lockups = %i\n", __func__, switches, lockups);
- }
-
- return 0;
-}
-
-static int sp8870_sleep(struct dvb_frontend* fe)
-{
- struct sp8870_state* state = fe->demodulator_priv;
-
- // tristate TS output and disable interface pins
- return sp8870_writereg(state, 0xC18, 0x000);
-}
-
-static int sp8870_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
-{
- fesettings->min_delay_ms = 350;
- fesettings->step_size = 0;
- fesettings->max_drift = 0;
- return 0;
-}
-
-static int sp8870_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
-{
- struct sp8870_state* state = fe->demodulator_priv;
-
- if (enable) {
- return sp8870_writereg(state, 0x206, 0x001);
- } else {
- return sp8870_writereg(state, 0x206, 0x000);
- }
-}
-
-static void sp8870_release(struct dvb_frontend* fe)
-{
- struct sp8870_state* state = fe->demodulator_priv;
- kfree(state);
-}
-
-static struct dvb_frontend_ops sp8870_ops;
-
-struct dvb_frontend* sp8870_attach(const struct sp8870_config* config,
- struct i2c_adapter* i2c)
-{
- struct sp8870_state* state = NULL;
-
- /* allocate memory for the internal state */
- state = kzalloc(sizeof(struct sp8870_state), GFP_KERNEL);
- if (state == NULL) goto error;
-
- /* setup the state */
- state->config = config;
- state->i2c = i2c;
- state->initialised = 0;
-
- /* check if the demod is there */
- if (sp8870_readreg(state, 0x0200) < 0) goto error;
-
- /* create dvb_frontend */
- memcpy(&state->frontend.ops, &sp8870_ops, sizeof(struct dvb_frontend_ops));
- state->frontend.demodulator_priv = state;
- return &state->frontend;
-
-error:
- kfree(state);
- return NULL;
-}
-
-static struct dvb_frontend_ops sp8870_ops = {
- .delsys = { SYS_DVBT },
- .info = {
- .name = "Spase SP8870 DVB-T",
- .frequency_min = 470000000,
- .frequency_max = 860000000,
- .frequency_stepsize = 166666,
- .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_QAM_AUTO |
- FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER
- },
-
- .release = sp8870_release,
-
- .init = sp8870_init,
- .sleep = sp8870_sleep,
- .i2c_gate_ctrl = sp8870_i2c_gate_ctrl,
-
- .set_frontend = sp8870_set_frontend,
- .get_tune_settings = sp8870_get_tune_settings,
-
- .read_status = sp8870_read_status,
- .read_ber = sp8870_read_ber,
- .read_signal_strength = sp8870_read_signal_strength,
- .read_ucblocks = sp8870_read_uncorrected_blocks,
-};
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-MODULE_DESCRIPTION("Spase SP8870 DVB-T Demodulator driver");
-MODULE_AUTHOR("Juergen Peitz");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(sp8870_attach);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-01 00:50:29 +0000