From 9a0bf528b4d66b605f02634236da085595c22101 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 13 Aug 2012 23:13:41 -0300 Subject: [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 --- drivers/media/dvb/frontends/sp8870.c | 620 ----------------------------------- 1 file changed, 620 deletions(-) delete mode 100644 drivers/media/dvb/frontends/sp8870.c (limited to 'drivers/media/dvb/frontends/sp8870.c') diff --git a/drivers/media/dvb/frontends/sp8870.c b/drivers/media/dvb/frontends/sp8870.c deleted file mode 100644 index e37274c8f14e..000000000000 --- 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 - * "/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 -#include -#include -#include -#include -#include -#include - -#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, ®0xc05))) - 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); -- cgit v1.2.3