diff options
Diffstat (limited to 'linux/drivers/media/dvb/frontends/alps_tdmb7.c')
| -rw-r--r-- | linux/drivers/media/dvb/frontends/alps_tdmb7.c | 532 |
1 files changed, 0 insertions, 532 deletions
diff --git a/linux/drivers/media/dvb/frontends/alps_tdmb7.c b/linux/drivers/media/dvb/frontends/alps_tdmb7.c deleted file mode 100644 index e07db4bb1..000000000 --- a/linux/drivers/media/dvb/frontends/alps_tdmb7.c +++ /dev/null @@ -1,532 +0,0 @@ -/* - Alps TDMB7 DVB OFDM frontend 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/moduleparam.h> -#include <linux/string.h> -#include <linux/slab.h> - -#include "dvb_frontend.h" - -#define FRONTEND_NAME "dvbfe_alps_tdmb7" - -#define dprintk(args...) \ - do { \ - if (debug) printk(KERN_DEBUG FRONTEND_NAME ": " args); \ - } while (0) - -static int debug; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - - -static struct dvb_frontend_info tdmb7_info = { - .name = "Alps TDMB7", - .type = FE_OFDM, - .frequency_min = 470000000, - .frequency_max = 860000000, - .frequency_stepsize = 166667, -#if 0 - .frequency_tolerance = ???, - .symbol_rate_min = ???, - .symbol_rate_max = ???, - .symbol_rate_tolerance = 500, /* ppm */ - .notifier_delay = 0, -#endif - .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 -}; - -struct tdmb7_state { - struct i2c_adapter *i2c; - struct dvb_adapter *dvb; -}; - -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 i2c_adapter *i2c, u8 reg, u8 data) -{ - int ret; - u8 buf [] = { reg, data }; - struct i2c_msg msg = { .addr = 0x43, .flags = 0, .buf = buf, .len = 2 }; - - dprintk ("%s\n", __FUNCTION__); - - ret = i2c_transfer (i2c, &msg, 1); - - if (ret != 1) - printk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n", - __FUNCTION__, reg, data, ret); - - return (ret != 1) ? -1 : 0; -} - -static u8 cx22700_readreg (struct i2c_adapter *i2c, u8 reg) -{ - int ret; - u8 b0 [] = { reg }; - u8 b1 [] = { 0 }; - struct i2c_msg msg [] = { { .addr = 0x43, .flags = 0, .buf = b0, .len = 1 }, - { .addr = 0x43, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; - - dprintk ("%s\n", __FUNCTION__); - - ret = i2c_transfer (i2c, msg, 2); - - if (ret != 2) - printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret); - - return b1[0]; -} - -static int pll_write (struct i2c_adapter *i2c, u8 data [4]) -{ - struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = 4 }; - int ret; - - cx22700_writereg (i2c, 0x0a, 0x00); /* open i2c bus switch */ - ret = i2c_transfer (i2c, &msg, 1); - cx22700_writereg (i2c, 0x0a, 0x01); /* close i2c bus switch */ - - if (ret != 1) - printk("%s: i/o error (addr == 0x%02x, ret == %i)\n", __FUNCTION__, msg.addr, ret); - - return (ret != 1) ? -1 : 0; -} - -/** - * set up the downconverter frequency divisor for a - * reference clock comparision frequency of 125 kHz. - */ -static int pll_set_tv_freq (struct i2c_adapter *i2c, u32 freq) -{ - u32 div = (freq + 36166667) / 166667; -#if 1 //ALPS_SETTINGS - u8 buf [4] = { (div >> 8) & 0x7f, div & 0xff, ((div >> 10) & 0x60) | 0x85, - freq < 592000000 ? 0x40 : 0x80 }; -#else - u8 buf [4] = { (div >> 8) & 0x7f, div & 0xff, ((div >> 10) & 0x60) | 0x85, - freq < 470000000 ? 0x42 : freq < 862000000 ? 0x41 : 0x81 }; -#endif - - dprintk ("%s: freq == %i, div == %i\n", __FUNCTION__, (int) freq, (int) div); - - return pll_write (i2c, buf); -} - -static int cx22700_init (struct i2c_adapter *i2c) -{ - int i; - - dprintk("cx22700_init: init chip\n"); - - cx22700_writereg (i2c, 0x00, 0x02); /* soft reset */ - cx22700_writereg (i2c, 0x00, 0x00); - - msleep(10); - - for (i=0; i<sizeof(init_tab); i+=2) - cx22700_writereg (i2c, init_tab[i], init_tab[i+1]); - - cx22700_writereg (i2c, 0x00, 0x01); - - return 0; -} - -static int cx22700_set_inversion (struct i2c_adapter *i2c, int inversion) -{ - u8 val; - - dprintk ("%s\n", __FUNCTION__); - - switch (inversion) { - case INVERSION_AUTO: - return -EOPNOTSUPP; - case INVERSION_ON: - val = cx22700_readreg (i2c, 0x09); - return cx22700_writereg (i2c, 0x09, val | 0x01); - case INVERSION_OFF: - val = cx22700_readreg (i2c, 0x09); - return cx22700_writereg (i2c, 0x09, val & 0xfe); - default: - return -EINVAL; - } -} - -static int cx22700_set_tps (struct i2c_adapter *i2c, struct dvb_ofdm_parameters *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", __FUNCTION__); - - 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) - - 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->constellation != QPSK && - p->constellation != QAM_16 && - p->constellation != QAM_64) - return -EINVAL; - - if (p->hierarchy_information < HIERARCHY_NONE || - p->hierarchy_information > HIERARCHY_4) - return -EINVAL; - - if (p->bandwidth < BANDWIDTH_8_MHZ && p->bandwidth > BANDWIDTH_6_MHZ) - return -EINVAL; - - if (p->bandwidth == BANDWIDTH_7_MHZ) - cx22700_writereg (i2c, 0x09, cx22700_readreg (i2c, 0x09 | 0x10)); - else - cx22700_writereg (i2c, 0x09, cx22700_readreg (i2c, 0x09 & ~0x10)); - - val = qam_tab[p->constellation - QPSK]; - val |= p->hierarchy_information - HIERARCHY_NONE; - - cx22700_writereg (i2c, 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 (i2c, 0x05, val); - - val = (p->guard_interval - GUARD_INTERVAL_1_32) << 2; - val |= p->transmission_mode - TRANSMISSION_MODE_2K; - - cx22700_writereg (i2c, 0x06, val); - - cx22700_writereg (i2c, 0x08, 0x04 | 0x02); /* use user tps parameters */ - cx22700_writereg (i2c, 0x08, 0x04); /* restart aquisition */ - - return 0; -} - -static int cx22700_get_tps (struct i2c_adapter *i2c, struct dvb_ofdm_parameters *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", __FUNCTION__); - - if (!(cx22700_readreg(i2c, 0x07) & 0x20)) /* tps valid? */ - return -EAGAIN; - - val = cx22700_readreg (i2c, 0x01); - - if ((val & 0x7) > 4) - p->hierarchy_information = HIERARCHY_AUTO; - else - p->hierarchy_information = HIERARCHY_NONE + (val & 0x7); - - if (((val >> 3) & 0x3) > 2) - p->constellation = QAM_AUTO; - else - p->constellation = qam_tab[(val >> 3) & 0x3]; - - val = cx22700_readreg (i2c, 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 (i2c, 0x03); - - p->guard_interval = GUARD_INTERVAL_1_32 + ((val >> 6) & 0x3); - p->transmission_mode = TRANSMISSION_MODE_2K + ((val >> 5) & 0x1); - - return 0; -} - -static int tdmb7_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg) -{ - struct tdmb7_state *state = fe->data; - struct i2c_adapter *i2c = state->i2c; - - dprintk ("%s\n", __FUNCTION__); - - switch (cmd) { - case FE_GET_INFO: - memcpy (arg, &tdmb7_info, sizeof(struct dvb_frontend_info)); - break; - - case FE_READ_STATUS: - { - fe_status_t *status = (fe_status_t *) arg; - u16 rs_ber = (cx22700_readreg (i2c, 0x0d) << 9) - | (cx22700_readreg (i2c, 0x0e) << 1); - u8 sync = cx22700_readreg (i2c, 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; - - break; - } - - case FE_READ_BER: - *((u32*) arg) = cx22700_readreg (i2c, 0x0c) & 0x7f; - cx22700_writereg (i2c, 0x0c, 0x00); - break; - - case FE_READ_SIGNAL_STRENGTH: - { - u16 rs_ber = (cx22700_readreg (i2c, 0x0d) << 9) - | (cx22700_readreg (i2c, 0x0e) << 1); - *((u16*) arg) = ~rs_ber; - break; - } - case FE_READ_SNR: - { - u16 rs_ber = (cx22700_readreg (i2c, 0x0d) << 9) - | (cx22700_readreg (i2c, 0x0e) << 1); - *((u16*) arg) = ~rs_ber; - break; - } - case FE_READ_UNCORRECTED_BLOCKS: - *((u32*) arg) = cx22700_readreg (i2c, 0x0f); - cx22700_writereg (i2c, 0x0f, 0x00); - break; - - case FE_SET_FRONTEND: - { - struct dvb_frontend_parameters *p = arg; - - cx22700_writereg (i2c, 0x00, 0x02); /* XXX CHECKME: soft reset*/ - cx22700_writereg (i2c, 0x00, 0x00); - - pll_set_tv_freq (i2c, p->frequency); - cx22700_set_inversion (i2c, p->inversion); - cx22700_set_tps (i2c, &p->u.ofdm); - cx22700_writereg (i2c, 0x37, 0x01); /* PAL loop filter off */ - cx22700_writereg (i2c, 0x00, 0x01); /* restart acquire */ - break; - } - - case FE_GET_FRONTEND: - { - struct dvb_frontend_parameters *p = arg; - u8 reg09 = cx22700_readreg (i2c, 0x09); - - p->inversion = reg09 & 0x1 ? INVERSION_ON : INVERSION_OFF; - return cx22700_get_tps (i2c, &p->u.ofdm); - } - - case FE_INIT: - return cx22700_init (i2c); - - case FE_GET_TUNE_SETTINGS: - { - struct dvb_frontend_tune_settings* fesettings = (struct dvb_frontend_tune_settings*) arg; - fesettings->min_delay_ms = 150; - fesettings->step_size = 166667; - fesettings->max_drift = 166667*2; - return 0; - } - - default: - return -EOPNOTSUPP; - }; - - return 0; -} - -static struct i2c_client client_template; - -static int attach_adapter (struct i2c_adapter *adapter) -{ - struct tdmb7_state *state; - struct i2c_client *client; - int ret; - - u8 b0 [] = { 0x7 }; - u8 b1 [] = { 0 }; - struct i2c_msg msg [] = { { .addr = 0x43, .flags = 0, .buf = b0, .len = 1 }, - { .addr = 0x43, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; - - dprintk ("%s\n", __FUNCTION__); - - if (i2c_transfer(adapter, msg, 2) != 2) - return -ENODEV; - - if (NULL == (state = kmalloc(sizeof(struct tdmb7_state), GFP_KERNEL))) - return -ENOMEM; - - state->i2c = adapter; - - if (NULL == (client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL))) { - kfree(state); - return -ENOMEM; - } - - memcpy(client, &client_template, sizeof(struct i2c_client)); - client->adapter = adapter; - i2c_set_clientdata(client, state); - - ret = i2c_attach_client(client); - if (ret) { - kfree(state); - kfree(client); - return ret; - } - - BUG_ON(!state->dvb); - - ret = dvb_register_frontend (tdmb7_ioctl, state->dvb, state, - &tdmb7_info, THIS_MODULE); - if (ret) { - i2c_detach_client(client); - kfree(state); - kfree(client); - return ret; - } - - return 0; -} - -static int detach_client (struct i2c_client *client) -{ - struct tdmb7_state *state = i2c_get_clientdata(client); - - dprintk ("%s\n", __FUNCTION__); - - dvb_unregister_frontend (tdmb7_ioctl, state->dvb); - i2c_detach_client(client); - BUG_ON(state->dvb); - kfree(client); - kfree(state); - return 0; -} - -static int command (struct i2c_client *client, - unsigned int cmd, void *arg) -{ - struct tdmb7_state *state = i2c_get_clientdata(client); - - dprintk("%s\n", __FUNCTION__); - - switch (cmd) { - case FE_REGISTER: - state->dvb = arg; - break; - case FE_UNREGISTER: - state->dvb = NULL; - break; - default: - return -EOPNOTSUPP; - } - - return 0; -} - -static struct i2c_driver driver = { - .owner = THIS_MODULE, - .name = FRONTEND_NAME, - .id = I2C_DRIVERID_DVBFE_ALPS_TDMB7, - .flags = I2C_DF_NOTIFY, - .attach_adapter = attach_adapter, - .detach_client = detach_client, - .command = command, -}; - -static struct i2c_client client_template = { - .name = FRONTEND_NAME, - .flags = I2C_CLIENT_ALLOW_USE, - .driver = &driver, -}; - -static int __init init_tdmb7 (void) -{ - return i2c_add_driver(&driver); -} - -static void __exit exit_tdmb7 (void) -{ - if (i2c_del_driver(&driver)) - printk(KERN_ERR "alps_tdmb7: driver deregistration failed.\n"); -} - -module_init (init_tdmb7); -module_exit (exit_tdmb7); - -MODULE_DESCRIPTION("TDMB7 DVB Frontend driver"); -MODULE_AUTHOR("Holger Waechtler"); -MODULE_LICENSE("GPL"); - |