diff options
Diffstat (limited to 'drivers/media/dvb/frontends/cx24113.c')
| -rw-r--r-- | drivers/media/dvb/frontends/cx24113.c | 618 |
1 files changed, 0 insertions, 618 deletions
diff --git a/drivers/media/dvb/frontends/cx24113.c b/drivers/media/dvb/frontends/cx24113.c deleted file mode 100644 index 3883c3b..0000000 --- a/drivers/media/dvb/frontends/cx24113.c +++ /dev/null @@ -1,618 +0,0 @@ -/* - * Driver for Conexant CX24113/CX24128 Tuner (Satellite) - * - * Copyright (C) 2007-8 Patrick Boettcher <pb@linuxtv.org> - * - * Developed for BBTI / Technisat - * - * 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/slab.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> - -#include "dvb_frontend.h" -#include "cx24113.h" - -static int debug; - -#define cx_info(args...) do { printk(KERN_INFO "CX24113: " args); } while (0) -#define cx_err(args...) do { printk(KERN_ERR "CX24113: " args); } while (0) - -#define dprintk(args...) \ - do { \ - if (debug) { \ - printk(KERN_DEBUG "CX24113: %s: ", __func__); \ - printk(args); \ - } \ - } while (0) - -struct cx24113_state { - struct i2c_adapter *i2c; - const struct cx24113_config *config; - -#define REV_CX24113 0x23 - u8 rev; - u8 ver; - - u8 icp_mode:1; - -#define ICP_LEVEL1 0 -#define ICP_LEVEL2 1 -#define ICP_LEVEL3 2 -#define ICP_LEVEL4 3 - u8 icp_man:2; - u8 icp_auto_low:2; - u8 icp_auto_mlow:2; - u8 icp_auto_mhi:2; - u8 icp_auto_hi:2; - u8 icp_dig; - -#define LNA_MIN_GAIN 0 -#define LNA_MID_GAIN 1 -#define LNA_MAX_GAIN 2 - u8 lna_gain:2; - - u8 acp_on:1; - - u8 vco_mode:2; - u8 vco_shift:1; -#define VCOBANDSEL_6 0x80 -#define VCOBANDSEL_5 0x01 -#define VCOBANDSEL_4 0x02 -#define VCOBANDSEL_3 0x04 -#define VCOBANDSEL_2 0x08 -#define VCOBANDSEL_1 0x10 - u8 vco_band; - -#define VCODIV4 4 -#define VCODIV2 2 - u8 vcodiv; - - u8 bs_delay:4; - u16 bs_freqcnt:13; - u16 bs_rdiv; - u8 prescaler_mode:1; - - u8 rfvga_bias_ctrl; - - s16 tuner_gain_thres; - u8 gain_level; - - u32 frequency; - - u8 refdiv; - - u8 Fwindow_enabled; -}; - -static int cx24113_writereg(struct cx24113_state *state, int reg, int data) -{ - u8 buf[] = { reg, data }; - struct i2c_msg msg = { .addr = state->config->i2c_addr, - .flags = 0, .buf = buf, .len = 2 }; - int err = i2c_transfer(state->i2c, &msg, 1); - if (err != 1) { - printk(KERN_DEBUG "%s: writereg error(err == %i, reg == 0x%02x," - " data == 0x%02x)\n", __func__, err, reg, data); - return err; - } - - return 0; -} - -static int cx24113_readreg(struct cx24113_state *state, u8 reg) -{ - int ret; - u8 b; - struct i2c_msg msg[] = { - { .addr = state->config->i2c_addr, - .flags = 0, .buf = ®, .len = 1 }, - { .addr = state->config->i2c_addr, - .flags = I2C_M_RD, .buf = &b, .len = 1 } - }; - - ret = i2c_transfer(state->i2c, msg, 2); - - if (ret != 2) { - printk(KERN_DEBUG "%s: reg=0x%x (error=%d)\n", - __func__, reg, ret); - return ret; - } - - return b; -} - -static void cx24113_set_parameters(struct cx24113_state *state) -{ - u8 r; - - r = cx24113_readreg(state, 0x10) & 0x82; - r |= state->icp_mode; - r |= state->icp_man << 4; - r |= state->icp_dig << 2; - r |= state->prescaler_mode << 5; - cx24113_writereg(state, 0x10, r); - - r = (state->icp_auto_low << 0) | (state->icp_auto_mlow << 2) - | (state->icp_auto_mhi << 4) | (state->icp_auto_hi << 6); - cx24113_writereg(state, 0x11, r); - - if (state->rev == REV_CX24113) { - r = cx24113_readreg(state, 0x20) & 0xec; - r |= state->lna_gain; - r |= state->rfvga_bias_ctrl << 4; - cx24113_writereg(state, 0x20, r); - } - - r = cx24113_readreg(state, 0x12) & 0x03; - r |= state->acp_on << 2; - r |= state->bs_delay << 4; - cx24113_writereg(state, 0x12, r); - - r = cx24113_readreg(state, 0x18) & 0x40; - r |= state->vco_shift; - if (state->vco_band == VCOBANDSEL_6) - r |= (1 << 7); - else - r |= (state->vco_band << 1); - cx24113_writereg(state, 0x18, r); - - r = cx24113_readreg(state, 0x14) & 0x20; - r |= (state->vco_mode << 6) | ((state->bs_freqcnt >> 8) & 0x1f); - cx24113_writereg(state, 0x14, r); - cx24113_writereg(state, 0x15, (state->bs_freqcnt & 0xff)); - - cx24113_writereg(state, 0x16, (state->bs_rdiv >> 4) & 0xff); - r = (cx24113_readreg(state, 0x17) & 0x0f) | - ((state->bs_rdiv & 0x0f) << 4); - cx24113_writereg(state, 0x17, r); -} - -#define VGA_0 0x00 -#define VGA_1 0x04 -#define VGA_2 0x02 -#define VGA_3 0x06 -#define VGA_4 0x01 -#define VGA_5 0x05 -#define VGA_6 0x03 -#define VGA_7 0x07 - -#define RFVGA_0 0x00 -#define RFVGA_1 0x01 -#define RFVGA_2 0x02 -#define RFVGA_3 0x03 - -static int cx24113_set_gain_settings(struct cx24113_state *state, - s16 power_estimation) -{ - u8 ampout = cx24113_readreg(state, 0x1d) & 0xf0, - vga = cx24113_readreg(state, 0x1f) & 0x3f, - rfvga = cx24113_readreg(state, 0x20) & 0xf3; - u8 gain_level = power_estimation >= state->tuner_gain_thres; - - dprintk("power estimation: %d, thres: %d, gain_level: %d/%d\n", - power_estimation, state->tuner_gain_thres, - state->gain_level, gain_level); - - if (gain_level == state->gain_level) - return 0; /* nothing to be done */ - - ampout |= 0xf; - - if (gain_level) { - rfvga |= RFVGA_0 << 2; - vga |= (VGA_7 << 3) | VGA_7; - } else { - rfvga |= RFVGA_2 << 2; - vga |= (VGA_6 << 3) | VGA_2; - } - state->gain_level = gain_level; - - cx24113_writereg(state, 0x1d, ampout); - cx24113_writereg(state, 0x1f, vga); - cx24113_writereg(state, 0x20, rfvga); - - return 1; /* did something */ -} - -static int cx24113_set_Fref(struct cx24113_state *state, u8 high) -{ - u8 xtal = cx24113_readreg(state, 0x02); - if (state->rev == 0x43 && state->vcodiv == VCODIV4) - high = 1; - - xtal &= ~0x2; - if (high) - xtal |= high << 1; - return cx24113_writereg(state, 0x02, xtal); -} - -static int cx24113_enable(struct cx24113_state *state, u8 enable) -{ - u8 r21 = (cx24113_readreg(state, 0x21) & 0xc0) | enable; - if (state->rev == REV_CX24113) - r21 |= (1 << 1); - return cx24113_writereg(state, 0x21, r21); -} - -static int cx24113_set_bandwidth(struct cx24113_state *state, u32 bandwidth_khz) -{ - u8 r; - - if (bandwidth_khz <= 19000) - r = 0x03 << 6; - else if (bandwidth_khz <= 25000) - r = 0x02 << 6; - else - r = 0x01 << 6; - - dprintk("bandwidth to be set: %d\n", bandwidth_khz); - bandwidth_khz *= 10; - bandwidth_khz -= 10000; - bandwidth_khz /= 1000; - bandwidth_khz += 5; - bandwidth_khz /= 10; - - dprintk("bandwidth: %d %d\n", r >> 6, bandwidth_khz); - - r |= bandwidth_khz & 0x3f; - - return cx24113_writereg(state, 0x1e, r); -} - -static int cx24113_set_clk_inversion(struct cx24113_state *state, u8 on) -{ - u8 r = (cx24113_readreg(state, 0x10) & 0x7f) | ((on & 0x1) << 7); - return cx24113_writereg(state, 0x10, r); -} - -static int cx24113_get_status(struct dvb_frontend *fe, u32 *status) -{ - struct cx24113_state *state = fe->tuner_priv; - u8 r = (cx24113_readreg(state, 0x10) & 0x02) >> 1; - if (r) - *status |= TUNER_STATUS_LOCKED; - dprintk("PLL locked: %d\n", r); - return 0; -} - -static u8 cx24113_set_ref_div(struct cx24113_state *state, u8 refdiv) -{ - if (state->rev == 0x43 && state->vcodiv == VCODIV4) - refdiv = 2; - return state->refdiv = refdiv; -} - -static void cx24113_calc_pll_nf(struct cx24113_state *state, u16 *n, s32 *f) -{ - s32 N; - s64 F; - u64 dividend; - u8 R, r; - u8 vcodiv; - u8 factor; - s32 freq_hz = state->frequency * 1000; - - if (state->config->xtal_khz < 20000) - factor = 1; - else - factor = 2; - - if (state->rev == REV_CX24113) { - if (state->frequency >= 1100000) - vcodiv = VCODIV2; - else - vcodiv = VCODIV4; - } else { - if (state->frequency >= 1165000) - vcodiv = VCODIV2; - else - vcodiv = VCODIV4; - } - state->vcodiv = vcodiv; - - dprintk("calculating N/F for %dHz with vcodiv %d\n", freq_hz, vcodiv); - R = 0; - do { - R = cx24113_set_ref_div(state, R + 1); - - /* calculate tuner PLL settings: */ - N = (freq_hz / 100 * vcodiv) * R; - N /= (state->config->xtal_khz) * factor * 2; - N += 5; /* For round up. */ - N /= 10; - N -= 32; - } while (N < 6 && R < 3); - - if (N < 6) { - cx_err("strange frequency: N < 6\n"); - return; - } - F = freq_hz; - F *= (u64) (R * vcodiv * 262144); - dprintk("1 N: %d, F: %lld, R: %d\n", N, (long long)F, R); - /* do_div needs an u64 as first argument */ - dividend = F; - do_div(dividend, state->config->xtal_khz * 1000 * factor * 2); - F = dividend; - dprintk("2 N: %d, F: %lld, R: %d\n", N, (long long)F, R); - F -= (N + 32) * 262144; - - dprintk("3 N: %d, F: %lld, R: %d\n", N, (long long)F, R); - - if (state->Fwindow_enabled) { - if (F > (262144 / 2 - 1638)) - F = 262144 / 2 - 1638; - if (F < (-262144 / 2 + 1638)) - F = -262144 / 2 + 1638; - if ((F < 3277 && F > 0) || (F > -3277 && F < 0)) { - F = 0; - r = cx24113_readreg(state, 0x10); - cx24113_writereg(state, 0x10, r | (1 << 6)); - } - } - dprintk("4 N: %d, F: %lld, R: %d\n", N, (long long)F, R); - - *n = (u16) N; - *f = (s32) F; -} - - -static void cx24113_set_nfr(struct cx24113_state *state, u16 n, s32 f, u8 r) -{ - u8 reg; - cx24113_writereg(state, 0x19, (n >> 1) & 0xff); - - reg = ((n & 0x1) << 7) | ((f >> 11) & 0x7f); - cx24113_writereg(state, 0x1a, reg); - - cx24113_writereg(state, 0x1b, (f >> 3) & 0xff); - - reg = cx24113_readreg(state, 0x1c) & 0x1f; - cx24113_writereg(state, 0x1c, reg | ((f & 0x7) << 5)); - - cx24113_set_Fref(state, r - 1); -} - -static int cx24113_set_frequency(struct cx24113_state *state, u32 frequency) -{ - u8 r = 1; /* or 2 */ - u16 n = 6; - s32 f = 0; - - r = cx24113_readreg(state, 0x14); - cx24113_writereg(state, 0x14, r & 0x3f); - - r = cx24113_readreg(state, 0x10); - cx24113_writereg(state, 0x10, r & 0xbf); - - state->frequency = frequency; - - dprintk("tuning to frequency: %d\n", frequency); - - cx24113_calc_pll_nf(state, &n, &f); - cx24113_set_nfr(state, n, f, state->refdiv); - - r = cx24113_readreg(state, 0x18) & 0xbf; - if (state->vcodiv != VCODIV2) - r |= 1 << 6; - cx24113_writereg(state, 0x18, r); - - /* The need for this sleep is not clear. But helps in some cases */ - msleep(5); - - r = cx24113_readreg(state, 0x1c) & 0xef; - cx24113_writereg(state, 0x1c, r | (1 << 4)); - return 0; -} - -static int cx24113_init(struct dvb_frontend *fe) -{ - struct cx24113_state *state = fe->tuner_priv; - int ret; - - state->tuner_gain_thres = -50; - state->gain_level = 255; /* to force a gain-setting initialization */ - state->icp_mode = 0; - - if (state->config->xtal_khz < 11000) { - state->icp_auto_hi = ICP_LEVEL4; - state->icp_auto_mhi = ICP_LEVEL4; - state->icp_auto_mlow = ICP_LEVEL3; - state->icp_auto_low = ICP_LEVEL3; - } else { - state->icp_auto_hi = ICP_LEVEL4; - state->icp_auto_mhi = ICP_LEVEL4; - state->icp_auto_mlow = ICP_LEVEL3; - state->icp_auto_low = ICP_LEVEL2; - } - - state->icp_dig = ICP_LEVEL3; - state->icp_man = ICP_LEVEL1; - state->acp_on = 1; - state->vco_mode = 0; - state->vco_shift = 0; - state->vco_band = VCOBANDSEL_1; - state->bs_delay = 8; - state->bs_freqcnt = 0x0fff; - state->bs_rdiv = 0x0fff; - state->prescaler_mode = 0; - state->lna_gain = LNA_MAX_GAIN; - state->rfvga_bias_ctrl = 1; - state->Fwindow_enabled = 1; - - cx24113_set_Fref(state, 0); - cx24113_enable(state, 0x3d); - cx24113_set_parameters(state); - - cx24113_set_gain_settings(state, -30); - - cx24113_set_bandwidth(state, 18025); - cx24113_set_clk_inversion(state, 1); - - if (state->config->xtal_khz >= 40000) - ret = cx24113_writereg(state, 0x02, - (cx24113_readreg(state, 0x02) & 0xfb) | (1 << 2)); - else - ret = cx24113_writereg(state, 0x02, - (cx24113_readreg(state, 0x02) & 0xfb) | (0 << 2)); - - return ret; -} - -static int cx24113_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct cx24113_state *state = fe->tuner_priv; - /* for a ROLL-OFF factor of 0.35, 0.2: 600, 0.25: 625 */ - u32 roll_off = 675; - u32 bw; - - bw = ((c->symbol_rate/100) * roll_off) / 1000; - bw += (10000000/100) + 5; - bw /= 10; - bw += 1000; - cx24113_set_bandwidth(state, bw); - - cx24113_set_frequency(state, c->frequency); - msleep(5); - return cx24113_get_status(fe, &bw); -} - -static s8 cx24113_agc_table[2][10] = { - {-54, -41, -35, -30, -25, -21, -16, -10, -6, -2}, - {-39, -35, -30, -25, -19, -15, -11, -5, 1, 9}, -}; - -void cx24113_agc_callback(struct dvb_frontend *fe) -{ - struct cx24113_state *state = fe->tuner_priv; - s16 s, i; - if (!fe->ops.read_signal_strength) - return; - - do { - /* this only works with the current CX24123 implementation */ - fe->ops.read_signal_strength(fe, (u16 *) &s); - s >>= 8; - dprintk("signal strength: %d\n", s); - for (i = 0; i < sizeof(cx24113_agc_table[0]); i++) - if (cx24113_agc_table[state->gain_level][i] > s) - break; - s = -25 - i*5; - } while (cx24113_set_gain_settings(state, s)); -} -EXPORT_SYMBOL(cx24113_agc_callback); - -static int cx24113_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct cx24113_state *state = fe->tuner_priv; - *frequency = state->frequency; - return 0; -} - -static int cx24113_release(struct dvb_frontend *fe) -{ - struct cx24113_state *state = fe->tuner_priv; - dprintk("\n"); - fe->tuner_priv = NULL; - kfree(state); - return 0; -} - -static const struct dvb_tuner_ops cx24113_tuner_ops = { - .info = { - .name = "Conexant CX24113", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_step = 125, - }, - - .release = cx24113_release, - - .init = cx24113_init, - - .set_params = cx24113_set_params, - .get_frequency = cx24113_get_frequency, - .get_status = cx24113_get_status, -}; - -struct dvb_frontend *cx24113_attach(struct dvb_frontend *fe, - const struct cx24113_config *config, struct i2c_adapter *i2c) -{ - /* allocate memory for the internal state */ - struct cx24113_state *state = - kzalloc(sizeof(struct cx24113_state), GFP_KERNEL); - int rc; - if (state == NULL) { - cx_err("Unable to kzalloc\n"); - goto error; - } - - /* setup the state */ - state->config = config; - state->i2c = i2c; - - cx_info("trying to detect myself\n"); - - /* making a dummy read, because of some expected troubles - * after power on */ - cx24113_readreg(state, 0x00); - - rc = cx24113_readreg(state, 0x00); - if (rc < 0) { - cx_info("CX24113 not found.\n"); - goto error; - } - state->rev = rc; - - switch (rc) { - case 0x43: - cx_info("detected CX24113 variant\n"); - break; - case REV_CX24113: - cx_info("successfully detected\n"); - break; - default: - cx_err("unsupported device id: %x\n", state->rev); - goto error; - } - state->ver = cx24113_readreg(state, 0x01); - cx_info("version: %x\n", state->ver); - - /* create dvb_frontend */ - memcpy(&fe->ops.tuner_ops, &cx24113_tuner_ops, - sizeof(struct dvb_tuner_ops)); - fe->tuner_priv = state; - return fe; - -error: - kfree(state); - - return NULL; -} -EXPORT_SYMBOL(cx24113_attach); - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); - -MODULE_AUTHOR("Patrick Boettcher <pb@linuxtv.org>"); -MODULE_DESCRIPTION("DVB Frontend module for Conexant CX24113/CX24128hardware"); -MODULE_LICENSE("GPL"); - |
