diff options
Diffstat (limited to 'drivers/media/dvb/frontends/ix2505v.c')
| -rw-r--r-- | drivers/media/dvb/frontends/ix2505v.c | 325 |
1 files changed, 0 insertions, 325 deletions
diff --git a/drivers/media/dvb/frontends/ix2505v.c b/drivers/media/dvb/frontends/ix2505v.c deleted file mode 100644 index bc5a82082aa..00000000000 --- a/drivers/media/dvb/frontends/ix2505v.c +++ /dev/null @@ -1,325 +0,0 @@ -/** - * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner - * - * Copyright (C) 2010 Malcolm Priestley - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License Version 2, as - * published by the Free Software Foundation. - * - * 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/module.h> -#include <linux/dvb/frontend.h> -#include <linux/slab.h> -#include <linux/types.h> - -#include "ix2505v.h" - -static int ix2505v_debug; -#define dprintk(level, args...) do { \ - if (ix2505v_debug & level) \ - printk(KERN_DEBUG "ix2505v: " args); \ -} while (0) - -#define deb_info(args...) dprintk(0x01, args) -#define deb_i2c(args...) dprintk(0x02, args) - -struct ix2505v_state { - struct i2c_adapter *i2c; - const struct ix2505v_config *config; - u32 frequency; -}; - -/** - * Data read format of the Sharp IX2505V B0017 - * - * byte1: 1 | 1 | 0 | 0 | 0 | MA1 | MA0 | 1 - * byte2: POR | FL | RD2 | RD1 | RD0 | X | X | X - * - * byte1 = address - * byte2; - * POR = Power on Reset (VCC H=<2.2v L=>2.2v) - * FL = Phase Lock (H=lock L=unlock) - * RD0-2 = Reserved internal operations - * - * Only POR can be used to check the tuner is present - * - * Caution: after byte2 the I2C reverts to write mode continuing to read - * may corrupt tuning data. - * - */ - -static int ix2505v_read_status_reg(struct ix2505v_state *state) -{ - u8 addr = state->config->tuner_address; - u8 b2[] = {0}; - int ret; - - struct i2c_msg msg[1] = { - { .addr = addr, .flags = I2C_M_RD, .buf = b2, .len = 1 } - }; - - ret = i2c_transfer(state->i2c, msg, 1); - deb_i2c("Read %s ", __func__); - - return (ret == 1) ? (int) b2[0] : -1; -} - -static int ix2505v_write(struct ix2505v_state *state, u8 buf[], u8 count) -{ - struct i2c_msg msg[1] = { - { .addr = state->config->tuner_address, .flags = 0, - .buf = buf, .len = count }, - }; - - int ret; - - ret = i2c_transfer(state->i2c, msg, 1); - - if (ret != 1) { - deb_i2c("%s: i2c error, ret=%d\n", __func__, ret); - return -EIO; - } - - return 0; -} - -static int ix2505v_release(struct dvb_frontend *fe) -{ - struct ix2505v_state *state = fe->tuner_priv; - - fe->tuner_priv = NULL; - kfree(state); - - return 0; -} - -/** - * Data write format of the Sharp IX2505V B0017 - * - * byte1: 1 | 1 | 0 | 0 | 0 | 0(MA1)| 0(MA0)| 0 - * byte2: 0 | BG1 | BG2 | N8 | N7 | N6 | N5 | N4 - * byte3: N3 | N2 | N1 | A5 | A4 | A3 | A2 | A1 - * byte4: 1 | 1(C1) | 1(C0) | PD5 | PD4 | TM | 0(RTS)| 1(REF) - * byte5: BA2 | BA1 | BA0 | PSC | PD3 |PD2/TS2|DIV/TS1|PD0/TS0 - * - * byte1 = address - * - * Write order - * 1) byte1 -> byte2 -> byte3 -> byte4 -> byte5 - * 2) byte1 -> byte4 -> byte5 -> byte2 -> byte3 - * 3) byte1 -> byte2 -> byte3 -> byte4 - * 4) byte1 -> byte4 -> byte5 -> byte2 - * 5) byte1 -> byte2 -> byte3 - * 6) byte1 -> byte4 -> byte5 - * 7) byte1 -> byte2 - * 8) byte1 -> byte4 - * - * Recommended Setup - * 1 -> 8 -> 6 - */ - -static int ix2505v_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct ix2505v_state *state = fe->tuner_priv; - u32 frequency = c->frequency; - u32 b_w = (c->symbol_rate * 27) / 32000; - u32 div_factor, N , A, x; - int ret = 0, len; - u8 gain, cc, ref, psc, local_osc, lpf; - u8 data[4] = {0}; - - if ((frequency < fe->ops.info.frequency_min) - || (frequency > fe->ops.info.frequency_max)) - return -EINVAL; - - if (state->config->tuner_gain) - gain = (state->config->tuner_gain < 4) - ? state->config->tuner_gain : 0; - else - gain = 0x0; - - if (state->config->tuner_chargepump) - cc = state->config->tuner_chargepump; - else - cc = 0x3; - - ref = 8; /* REF =1 */ - psc = 32; /* PSC = 0 */ - - div_factor = (frequency * ref) / 40; /* local osc = 4Mhz */ - x = div_factor / psc; - N = x/100; - A = ((x - (N * 100)) * psc) / 100; - - data[0] = ((gain & 0x3) << 5) | (N >> 3); - data[1] = (N << 5) | (A & 0x1f); - data[2] = 0x81 | ((cc & 0x3) << 5) ; /*PD5,PD4 & TM = 0|C1,C0|REF=1*/ - - deb_info("Frq=%d x=%d N=%d A=%d\n", frequency, x, N, A); - - if (frequency <= 1065000) - local_osc = (6 << 5) | 2; - else if (frequency <= 1170000) - local_osc = (7 << 5) | 2; - else if (frequency <= 1300000) - local_osc = (1 << 5); - else if (frequency <= 1445000) - local_osc = (2 << 5); - else if (frequency <= 1607000) - local_osc = (3 << 5); - else if (frequency <= 1778000) - local_osc = (4 << 5); - else if (frequency <= 1942000) - local_osc = (5 << 5); - else /*frequency up to 2150000*/ - local_osc = (6 << 5); - - data[3] = local_osc; /* all other bits set 0 */ - - if (b_w <= 10000) - lpf = 0xc; - else if (b_w <= 12000) - lpf = 0x2; - else if (b_w <= 14000) - lpf = 0xa; - else if (b_w <= 16000) - lpf = 0x6; - else if (b_w <= 18000) - lpf = 0xe; - else if (b_w <= 20000) - lpf = 0x1; - else if (b_w <= 22000) - lpf = 0x9; - else if (b_w <= 24000) - lpf = 0x5; - else if (b_w <= 26000) - lpf = 0xd; - else if (b_w <= 28000) - lpf = 0x3; - else - lpf = 0xb; - - deb_info("Osc=%x b_w=%x lpf=%x\n", local_osc, b_w, lpf); - deb_info("Data 0=[%x%x%x%x]\n", data[0], data[1], data[2], data[3]); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - len = sizeof(data); - ret |= ix2505v_write(state, data, len); - - data[2] |= 0x4; /* set TM = 1 other bits same */ - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - len = 1; - ret |= ix2505v_write(state, &data[2], len); /* write byte 4 only */ - - msleep(10); - - data[2] |= ((lpf >> 2) & 0x3) << 3; /* lpf */ - data[3] |= (lpf & 0x3) << 2; - - deb_info("Data 2=[%x%x]\n", data[2], data[3]); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - len = 2; - ret |= ix2505v_write(state, &data[2], len); /* write byte 4 & 5 */ - - if (state->config->min_delay_ms) - msleep(state->config->min_delay_ms); - - state->frequency = frequency; - - return ret; -} - -static int ix2505v_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct ix2505v_state *state = fe->tuner_priv; - - *frequency = state->frequency; - - return 0; -} - -static struct dvb_tuner_ops ix2505v_tuner_ops = { - .info = { - .name = "Sharp IX2505V (B0017)", - .frequency_min = 950000, - .frequency_max = 2175000 - }, - .release = ix2505v_release, - .set_params = ix2505v_set_params, - .get_frequency = ix2505v_get_frequency, -}; - -struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, - const struct ix2505v_config *config, - struct i2c_adapter *i2c) -{ - struct ix2505v_state *state = NULL; - int ret; - - if (NULL == config) { - deb_i2c("%s: no config ", __func__); - goto error; - } - - state = kzalloc(sizeof(struct ix2505v_state), GFP_KERNEL); - if (NULL == state) - return NULL; - - state->config = config; - state->i2c = i2c; - - if (state->config->tuner_write_only) { - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - ret = ix2505v_read_status_reg(state); - - if (ret & 0x80) { - deb_i2c("%s: No IX2505V found\n", __func__); - goto error; - } - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - } - - fe->tuner_priv = state; - - memcpy(&fe->ops.tuner_ops, &ix2505v_tuner_ops, - sizeof(struct dvb_tuner_ops)); - deb_i2c("%s: initialization (%s addr=0x%02x) ok\n", - __func__, fe->ops.tuner_ops.info.name, config->tuner_address); - - return fe; - -error: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(ix2505v_attach); - -module_param_named(debug, ix2505v_debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); -MODULE_DESCRIPTION("DVB IX2505V tuner driver"); -MODULE_AUTHOR("Malcolm Priestley"); -MODULE_LICENSE("GPL"); |