diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda10048.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda10048.c | 1191 |
1 files changed, 0 insertions, 1191 deletions
diff --git a/drivers/media/dvb/frontends/tda10048.c b/drivers/media/dvb/frontends/tda10048.c deleted file mode 100644 index 71fb63299de..00000000000 --- a/drivers/media/dvb/frontends/tda10048.c +++ /dev/null @@ -1,1191 +0,0 @@ -/* - NXP TDA10048HN DVB OFDM demodulator driver - - Copyright (C) 2009 Steven Toth <stoth@kernellabs.com> - - 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/string.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/math64.h> -#include <asm/div64.h> -#include "dvb_frontend.h" -#include "dvb_math.h" -#include "tda10048.h" - -#define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw" -#define TDA10048_DEFAULT_FIRMWARE_SIZE 24878 - -/* Register name definitions */ -#define TDA10048_IDENTITY 0x00 -#define TDA10048_VERSION 0x01 -#define TDA10048_DSP_CODE_CPT 0x0C -#define TDA10048_DSP_CODE_IN 0x0E -#define TDA10048_IN_CONF1 0x10 -#define TDA10048_IN_CONF2 0x11 -#define TDA10048_IN_CONF3 0x12 -#define TDA10048_OUT_CONF1 0x14 -#define TDA10048_OUT_CONF2 0x15 -#define TDA10048_OUT_CONF3 0x16 -#define TDA10048_AUTO 0x18 -#define TDA10048_SYNC_STATUS 0x1A -#define TDA10048_CONF_C4_1 0x1E -#define TDA10048_CONF_C4_2 0x1F -#define TDA10048_CODE_IN_RAM 0x20 -#define TDA10048_CHANNEL_INFO1_R 0x22 -#define TDA10048_CHANNEL_INFO2_R 0x23 -#define TDA10048_CHANNEL_INFO1 0x24 -#define TDA10048_CHANNEL_INFO2 0x25 -#define TDA10048_TIME_ERROR_R 0x26 -#define TDA10048_TIME_ERROR 0x27 -#define TDA10048_FREQ_ERROR_LSB_R 0x28 -#define TDA10048_FREQ_ERROR_MSB_R 0x29 -#define TDA10048_FREQ_ERROR_LSB 0x2A -#define TDA10048_FREQ_ERROR_MSB 0x2B -#define TDA10048_IT_SEL 0x30 -#define TDA10048_IT_STAT 0x32 -#define TDA10048_DSP_AD_LSB 0x3C -#define TDA10048_DSP_AD_MSB 0x3D -#define TDA10048_DSP_REG_LSB 0x3E -#define TDA10048_DSP_REG_MSB 0x3F -#define TDA10048_CONF_TRISTATE1 0x44 -#define TDA10048_CONF_TRISTATE2 0x45 -#define TDA10048_CONF_POLARITY 0x46 -#define TDA10048_GPIO_SP_DS0 0x48 -#define TDA10048_GPIO_SP_DS1 0x49 -#define TDA10048_GPIO_SP_DS2 0x4A -#define TDA10048_GPIO_SP_DS3 0x4B -#define TDA10048_GPIO_OUT_SEL 0x4C -#define TDA10048_GPIO_SELECT 0x4D -#define TDA10048_IC_MODE 0x4E -#define TDA10048_CONF_XO 0x50 -#define TDA10048_CONF_PLL1 0x51 -#define TDA10048_CONF_PLL2 0x52 -#define TDA10048_CONF_PLL3 0x53 -#define TDA10048_CONF_ADC 0x54 -#define TDA10048_CONF_ADC_2 0x55 -#define TDA10048_CONF_C1_1 0x60 -#define TDA10048_CONF_C1_3 0x62 -#define TDA10048_AGC_CONF 0x70 -#define TDA10048_AGC_THRESHOLD_LSB 0x72 -#define TDA10048_AGC_THRESHOLD_MSB 0x73 -#define TDA10048_AGC_RENORM 0x74 -#define TDA10048_AGC_GAINS 0x76 -#define TDA10048_AGC_TUN_MIN 0x78 -#define TDA10048_AGC_TUN_MAX 0x79 -#define TDA10048_AGC_IF_MIN 0x7A -#define TDA10048_AGC_IF_MAX 0x7B -#define TDA10048_AGC_TUN_LEVEL 0x7E -#define TDA10048_AGC_IF_LEVEL 0x7F -#define TDA10048_DIG_AGC_LEVEL 0x81 -#define TDA10048_FREQ_PHY2_LSB 0x86 -#define TDA10048_FREQ_PHY2_MSB 0x87 -#define TDA10048_TIME_INVWREF_LSB 0x88 -#define TDA10048_TIME_INVWREF_MSB 0x89 -#define TDA10048_TIME_WREF_LSB 0x8A -#define TDA10048_TIME_WREF_MID1 0x8B -#define TDA10048_TIME_WREF_MID2 0x8C -#define TDA10048_TIME_WREF_MSB 0x8D -#define TDA10048_NP_OUT 0xA2 -#define TDA10048_CELL_ID_LSB 0xA4 -#define TDA10048_CELL_ID_MSB 0xA5 -#define TDA10048_EXTTPS_ODD 0xAA -#define TDA10048_EXTTPS_EVEN 0xAB -#define TDA10048_TPS_LENGTH 0xAC -#define TDA10048_FREE_REG_1 0xB2 -#define TDA10048_FREE_REG_2 0xB3 -#define TDA10048_CONF_C3_1 0xC0 -#define TDA10048_CVBER_CTRL 0xC2 -#define TDA10048_CBER_NMAX_LSB 0xC4 -#define TDA10048_CBER_NMAX_MSB 0xC5 -#define TDA10048_CBER_LSB 0xC6 -#define TDA10048_CBER_MSB 0xC7 -#define TDA10048_VBER_LSB 0xC8 -#define TDA10048_VBER_MID 0xC9 -#define TDA10048_VBER_MSB 0xCA -#define TDA10048_CVBER_LUT 0xCC -#define TDA10048_UNCOR_CTRL 0xCD -#define TDA10048_UNCOR_CPT_LSB 0xCE -#define TDA10048_UNCOR_CPT_MSB 0xCF -#define TDA10048_SOFT_IT_C3 0xD6 -#define TDA10048_CONF_TS2 0xE0 -#define TDA10048_CONF_TS1 0xE1 - -static unsigned int debug; - -#define dprintk(level, fmt, arg...)\ - do { if (debug >= level)\ - printk(KERN_DEBUG "tda10048: " fmt, ## arg);\ - } while (0) - -struct tda10048_state { - - struct i2c_adapter *i2c; - - /* We'll cache and update the attach config settings */ - struct tda10048_config config; - struct dvb_frontend frontend; - - int fwloaded; - - u32 freq_if_hz; - u32 xtal_hz; - u32 pll_mfactor; - u32 pll_nfactor; - u32 pll_pfactor; - u32 sample_freq; - - u32 bandwidth; -}; - -static struct init_tab { - u8 reg; - u16 data; -} init_tab[] = { - { TDA10048_CONF_PLL1, 0x08 }, - { TDA10048_CONF_ADC_2, 0x00 }, - { TDA10048_CONF_C4_1, 0x00 }, - { TDA10048_CONF_PLL1, 0x0f }, - { TDA10048_CONF_PLL2, 0x0a }, - { TDA10048_CONF_PLL3, 0x43 }, - { TDA10048_FREQ_PHY2_LSB, 0x02 }, - { TDA10048_FREQ_PHY2_MSB, 0x0a }, - { TDA10048_TIME_WREF_LSB, 0xbd }, - { TDA10048_TIME_WREF_MID1, 0xe4 }, - { TDA10048_TIME_WREF_MID2, 0xa8 }, - { TDA10048_TIME_WREF_MSB, 0x02 }, - { TDA10048_TIME_INVWREF_LSB, 0x04 }, - { TDA10048_TIME_INVWREF_MSB, 0x06 }, - { TDA10048_CONF_C4_1, 0x00 }, - { TDA10048_CONF_C1_1, 0xa8 }, - { TDA10048_AGC_CONF, 0x16 }, - { TDA10048_CONF_C1_3, 0x0b }, - { TDA10048_AGC_TUN_MIN, 0x00 }, - { TDA10048_AGC_TUN_MAX, 0xff }, - { TDA10048_AGC_IF_MIN, 0x00 }, - { TDA10048_AGC_IF_MAX, 0xff }, - { TDA10048_AGC_THRESHOLD_MSB, 0x00 }, - { TDA10048_AGC_THRESHOLD_LSB, 0x70 }, - { TDA10048_CVBER_CTRL, 0x38 }, - { TDA10048_AGC_GAINS, 0x12 }, - { TDA10048_CONF_XO, 0x00 }, - { TDA10048_CONF_TS1, 0x07 }, - { TDA10048_IC_MODE, 0x00 }, - { TDA10048_CONF_TS2, 0xc0 }, - { TDA10048_CONF_TRISTATE1, 0x21 }, - { TDA10048_CONF_TRISTATE2, 0x00 }, - { TDA10048_CONF_POLARITY, 0x00 }, - { TDA10048_CONF_C4_2, 0x04 }, - { TDA10048_CONF_ADC, 0x60 }, - { TDA10048_CONF_ADC_2, 0x10 }, - { TDA10048_CONF_ADC, 0x60 }, - { TDA10048_CONF_ADC_2, 0x00 }, - { TDA10048_CONF_C1_1, 0xa8 }, - { TDA10048_UNCOR_CTRL, 0x00 }, - { TDA10048_CONF_C4_2, 0x04 }, -}; - -static struct pll_tab { - u32 clk_freq_khz; - u32 if_freq_khz; -} pll_tab[] = { - { TDA10048_CLK_4000, TDA10048_IF_36130 }, - { TDA10048_CLK_16000, TDA10048_IF_3300 }, - { TDA10048_CLK_16000, TDA10048_IF_3500 }, - { TDA10048_CLK_16000, TDA10048_IF_3800 }, - { TDA10048_CLK_16000, TDA10048_IF_4000 }, - { TDA10048_CLK_16000, TDA10048_IF_4300 }, - { TDA10048_CLK_16000, TDA10048_IF_4500 }, - { TDA10048_CLK_16000, TDA10048_IF_5000 }, - { TDA10048_CLK_16000, TDA10048_IF_36130 }, -}; - -static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data) -{ - struct tda10048_config *config = &state->config; - int ret; - u8 buf[] = { reg, data }; - struct i2c_msg msg = { - .addr = config->demod_address, - .flags = 0, .buf = buf, .len = 2 }; - - dprintk(2, "%s(reg = 0x%02x, data = 0x%02x)\n", __func__, reg, data); - - ret = i2c_transfer(state->i2c, &msg, 1); - - if (ret != 1) - printk("%s: writereg error (ret == %i)\n", __func__, ret); - - return (ret != 1) ? -1 : 0; -} - -static u8 tda10048_readreg(struct tda10048_state *state, u8 reg) -{ - struct tda10048_config *config = &state->config; - int ret; - u8 b0[] = { reg }; - u8 b1[] = { 0 }; - struct i2c_msg msg[] = { - { .addr = config->demod_address, - .flags = 0, .buf = b0, .len = 1 }, - { .addr = config->demod_address, - .flags = I2C_M_RD, .buf = b1, .len = 1 } }; - - dprintk(2, "%s(reg = 0x%02x)\n", __func__, reg); - - ret = i2c_transfer(state->i2c, msg, 2); - - if (ret != 2) - printk(KERN_ERR "%s: readreg error (ret == %i)\n", - __func__, ret); - - return b1[0]; -} - -static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg, - const u8 *data, u16 len) -{ - struct tda10048_config *config = &state->config; - int ret = -EREMOTEIO; - struct i2c_msg msg; - u8 *buf; - - dprintk(2, "%s(%d, ?, len = %d)\n", __func__, reg, len); - - buf = kmalloc(len + 1, GFP_KERNEL); - if (buf == NULL) { - ret = -ENOMEM; - goto error; - } - - *buf = reg; - memcpy(buf + 1, data, len); - - msg.addr = config->demod_address; - msg.flags = 0; - msg.buf = buf; - msg.len = len + 1; - - dprintk(2, "%s(): write len = %d\n", - __func__, msg.len); - - ret = i2c_transfer(state->i2c, &msg, 1); - if (ret != 1) { - printk(KERN_ERR "%s(): writereg error err %i\n", - __func__, ret); - ret = -EREMOTEIO; - } - -error: - kfree(buf); - - return ret; -} - -static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz, - u32 if_hz) -{ - struct tda10048_state *state = fe->demodulator_priv; - u64 t; - - dprintk(1, "%s()\n", __func__); - - if (sample_freq_hz == 0) - return -EINVAL; - - if (if_hz < (sample_freq_hz / 2)) { - /* PHY2 = (if2/fs) * 2^15 */ - t = if_hz; - t *= 10; - t *= 32768; - do_div(t, sample_freq_hz); - t += 5; - do_div(t, 10); - } else { - /* PHY2 = ((IF1-fs)/fs) * 2^15 */ - t = sample_freq_hz - if_hz; - t *= 10; - t *= 32768; - do_div(t, sample_freq_hz); - t += 5; - do_div(t, 10); - t = ~t + 1; - } - - tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t); - tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8)); - - return 0; -} - -static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz, - u32 bw) -{ - struct tda10048_state *state = fe->demodulator_priv; - u64 t, z; - - dprintk(1, "%s()\n", __func__); - - if (sample_freq_hz == 0) - return -EINVAL; - - /* WREF = (B / (7 * fs)) * 2^31 */ - t = bw * 10; - /* avoid warning: this decimal constant is unsigned only in ISO C90 */ - /* t *= 2147483648 on 32bit platforms */ - t *= (2048 * 1024); - t *= 1024; - z = 7 * sample_freq_hz; - do_div(t, z); - t += 5; - do_div(t, 10); - - tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t); - tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8)); - tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16)); - tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24)); - - return 0; -} - -static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz, - u32 bw) -{ - struct tda10048_state *state = fe->demodulator_priv; - u64 t; - - dprintk(1, "%s()\n", __func__); - - if (sample_freq_hz == 0) - return -EINVAL; - - /* INVWREF = ((7 * fs) / B) * 2^5 */ - t = sample_freq_hz; - t *= 7; - t *= 32; - t *= 10; - do_div(t, bw); - t += 5; - do_div(t, 10); - - tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t); - tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8)); - - return 0; -} - -static int tda10048_set_bandwidth(struct dvb_frontend *fe, - u32 bw) -{ - struct tda10048_state *state = fe->demodulator_priv; - dprintk(1, "%s(bw=%d)\n", __func__, bw); - - /* Bandwidth setting may need to be adjusted */ - switch (bw) { - case 6000000: - case 7000000: - case 8000000: - tda10048_set_wref(fe, state->sample_freq, bw); - tda10048_set_invwref(fe, state->sample_freq, bw); - break; - default: - printk(KERN_ERR "%s() invalid bandwidth\n", __func__); - return -EINVAL; - } - - state->bandwidth = bw; - - return 0; -} - -static int tda10048_set_if(struct dvb_frontend *fe, u32 bw) -{ - struct tda10048_state *state = fe->demodulator_priv; - struct tda10048_config *config = &state->config; - int i; - u32 if_freq_khz; - - dprintk(1, "%s(bw = %d)\n", __func__, bw); - - /* based on target bandwidth and clk we calculate pll factors */ - switch (bw) { - case 6000000: - if_freq_khz = config->dtv6_if_freq_khz; - break; - case 7000000: - if_freq_khz = config->dtv7_if_freq_khz; - break; - case 8000000: - if_freq_khz = config->dtv8_if_freq_khz; - break; - default: - printk(KERN_ERR "%s() no default\n", __func__); - return -EINVAL; - } - - for (i = 0; i < ARRAY_SIZE(pll_tab); i++) { - if ((pll_tab[i].clk_freq_khz == config->clk_freq_khz) && - (pll_tab[i].if_freq_khz == if_freq_khz)) { - - state->freq_if_hz = pll_tab[i].if_freq_khz * 1000; - state->xtal_hz = pll_tab[i].clk_freq_khz * 1000; - break; - } - } - if (i == ARRAY_SIZE(pll_tab)) { - printk(KERN_ERR "%s() Incorrect attach settings\n", - __func__); - return -EINVAL; - } - - dprintk(1, "- freq_if_hz = %d\n", state->freq_if_hz); - dprintk(1, "- xtal_hz = %d\n", state->xtal_hz); - dprintk(1, "- pll_mfactor = %d\n", state->pll_mfactor); - dprintk(1, "- pll_nfactor = %d\n", state->pll_nfactor); - dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor); - - /* Calculate the sample frequency */ - state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45); - state->sample_freq /= (state->pll_nfactor + 1); - state->sample_freq /= (state->pll_pfactor + 4); - dprintk(1, "- sample_freq = %d\n", state->sample_freq); - - /* Update the I/F */ - tda10048_set_phy2(fe, state->sample_freq, state->freq_if_hz); - - return 0; -} - -static int tda10048_firmware_upload(struct dvb_frontend *fe) -{ - struct tda10048_state *state = fe->demodulator_priv; - struct tda10048_config *config = &state->config; - const struct firmware *fw; - int ret; - int pos = 0; - int cnt; - u8 wlen = config->fwbulkwritelen; - - if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50)) - wlen = TDA10048_BULKWRITE_200; - - /* request the firmware, this will block and timeout */ - printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n", - __func__, - TDA10048_DEFAULT_FIRMWARE); - - ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE, - state->i2c->dev.parent); - if (ret) { - printk(KERN_ERR "%s: Upload failed. (file not found?)\n", - __func__); - return -EIO; - } else { - printk(KERN_INFO "%s: firmware read %Zu bytes.\n", - __func__, - fw->size); - ret = 0; - } - - if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) { - printk(KERN_ERR "%s: firmware incorrect size\n", __func__); - ret = -EIO; - } else { - printk(KERN_INFO "%s: firmware uploading\n", __func__); - - /* Soft reset */ - tda10048_writereg(state, TDA10048_CONF_TRISTATE1, - tda10048_readreg(state, TDA10048_CONF_TRISTATE1) - & 0xfe); - tda10048_writereg(state, TDA10048_CONF_TRISTATE1, - tda10048_readreg(state, TDA10048_CONF_TRISTATE1) - | 0x01); - - /* Put the demod into host download mode */ - tda10048_writereg(state, TDA10048_CONF_C4_1, - tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xf9); - - /* Boot the DSP */ - tda10048_writereg(state, TDA10048_CONF_C4_1, - tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x08); - - /* Prepare for download */ - tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0); - - /* Download the firmware payload */ - while (pos < fw->size) { - - if ((fw->size - pos) > wlen) - cnt = wlen; - else - cnt = fw->size - pos; - - tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN, - &fw->data[pos], cnt); - - pos += cnt; - } - - ret = -EIO; - /* Wait up to 250ms for the DSP to boot */ - for (cnt = 0; cnt < 250 ; cnt += 10) { - - msleep(10); - - if (tda10048_readreg(state, TDA10048_SYNC_STATUS) - & 0x40) { - ret = 0; - break; - } - } - } - - release_firmware(fw); - - if (ret == 0) { - printk(KERN_INFO "%s: firmware uploaded\n", __func__); - state->fwloaded = 1; - } else - printk(KERN_ERR "%s: firmware upload failed\n", __func__); - - return ret; -} - -static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion) -{ - struct tda10048_state *state = fe->demodulator_priv; - - dprintk(1, "%s(%d)\n", __func__, inversion); - - if (inversion == TDA10048_INVERSION_ON) - tda10048_writereg(state, TDA10048_CONF_C1_1, - tda10048_readreg(state, TDA10048_CONF_C1_1) | 0x20); - else - tda10048_writereg(state, TDA10048_CONF_C1_1, - tda10048_readreg(state, TDA10048_CONF_C1_1) & 0xdf); - - return 0; -} - -/* Retrieve the demod settings */ -static int tda10048_get_tps(struct tda10048_state *state, - struct dtv_frontend_properties *p) -{ - u8 val; - - /* Make sure the TPS regs are valid */ - if (!(tda10048_readreg(state, TDA10048_AUTO) & 0x01)) - return -EAGAIN; - - val = tda10048_readreg(state, TDA10048_OUT_CONF2); - switch ((val & 0x60) >> 5) { - case 0: - p->modulation = QPSK; - break; - case 1: - p->modulation = QAM_16; - break; - case 2: - p->modulation = QAM_64; - break; - } - switch ((val & 0x18) >> 3) { - case 0: - p->hierarchy = HIERARCHY_NONE; - break; - case 1: - p->hierarchy = HIERARCHY_1; - break; - case 2: - p->hierarchy = HIERARCHY_2; - break; - case 3: - p->hierarchy = HIERARCHY_4; - break; - } - switch (val & 0x07) { - case 0: - p->code_rate_HP = FEC_1_2; - break; - case 1: - p->code_rate_HP = FEC_2_3; - break; - case 2: - p->code_rate_HP = FEC_3_4; - break; - case 3: - p->code_rate_HP = FEC_5_6; - break; - case 4: - p->code_rate_HP = FEC_7_8; - break; - } - - val = tda10048_readreg(state, TDA10048_OUT_CONF3); - switch (val & 0x07) { - case 0: - p->code_rate_LP = FEC_1_2; - break; - case 1: - p->code_rate_LP = FEC_2_3; - break; - case 2: - p->code_rate_LP = FEC_3_4; - break; - case 3: - p->code_rate_LP = FEC_5_6; - break; - case 4: - p->code_rate_LP = FEC_7_8; - break; - } - - val = tda10048_readreg(state, TDA10048_OUT_CONF1); - switch ((val & 0x0c) >> 2) { - case 0: - p->guard_interval = GUARD_INTERVAL_1_32; - break; - case 1: - p->guard_interval = GUARD_INTERVAL_1_16; - break; - case 2: - p->guard_interval = GUARD_INTERVAL_1_8; - break; - case 3: - p->guard_interval = GUARD_INTERVAL_1_4; - break; - } - switch (val & 0x03) { - case 0: - p->transmission_mode = TRANSMISSION_MODE_2K; - break; - case 1: - p->transmission_mode = TRANSMISSION_MODE_8K; - break; - } - - return 0; -} - -static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) -{ - struct tda10048_state *state = fe->demodulator_priv; - struct tda10048_config *config = &state->config; - dprintk(1, "%s(%d)\n", __func__, enable); - - if (config->disable_gate_access) - return 0; - - if (enable) - return tda10048_writereg(state, TDA10048_CONF_C4_1, - tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x02); - else - return tda10048_writereg(state, TDA10048_CONF_C4_1, - tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xfd); -} - -static int tda10048_output_mode(struct dvb_frontend *fe, int serial) -{ - struct tda10048_state *state = fe->demodulator_priv; - dprintk(1, "%s(%d)\n", __func__, serial); - - /* Ensure pins are out of tri-state */ - tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0x21); - tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0x00); - - if (serial) { - tda10048_writereg(state, TDA10048_IC_MODE, 0x80 | 0x20); - tda10048_writereg(state, TDA10048_CONF_TS2, 0xc0); - } else { - tda10048_writereg(state, TDA10048_IC_MODE, 0x00); - tda10048_writereg(state, TDA10048_CONF_TS2, 0x01); - } - - return 0; -} - -/* Talk to the demod, set the FEC, GUARD, QAM settings etc */ -/* TODO: Support manual tuning with specific params */ -static int tda10048_set_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct tda10048_state *state = fe->demodulator_priv; - - dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency); - - /* Update the I/F pll's if the bandwidth changes */ - if (p->bandwidth_hz != state->bandwidth) { - tda10048_set_if(fe, p->bandwidth_hz); - tda10048_set_bandwidth(fe, p->bandwidth_hz); - } - - if (fe->ops.tuner_ops.set_params) { - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - fe->ops.tuner_ops.set_params(fe); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - } - - /* Enable demod TPS auto detection and begin acquisition */ - tda10048_writereg(state, TDA10048_AUTO, 0x57); - /* trigger cber and vber acquisition */ - tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x3B); - - return 0; -} - -/* Establish sane defaults and load firmware. */ -static int tda10048_init(struct dvb_frontend *fe) -{ - struct tda10048_state *state = fe->demodulator_priv; - struct tda10048_config *config = &state->config; - int ret = 0, i; - - dprintk(1, "%s()\n", __func__); - - /* PLL */ - init_tab[4].data = (u8)(state->pll_mfactor); - init_tab[5].data = (u8)(state->pll_nfactor) | 0x40; - - /* Apply register defaults */ - for (i = 0; i < ARRAY_SIZE(init_tab); i++) - tda10048_writereg(state, init_tab[i].reg, init_tab[i].data); - - if (state->fwloaded == 0) - ret = tda10048_firmware_upload(fe); - - /* Set either serial or parallel */ - tda10048_output_mode(fe, config->output_mode); - - /* Set inversion */ - tda10048_set_inversion(fe, config->inversion); - - /* Establish default RF values */ - tda10048_set_if(fe, 8000000); - tda10048_set_bandwidth(fe, 8000000); - - /* Ensure we leave the gate closed */ - tda10048_i2c_gate_ctrl(fe, 0); - - return ret; -} - -static int tda10048_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct tda10048_state *state = fe->demodulator_priv; - u8 reg; - - *status = 0; - - reg = tda10048_readreg(state, TDA10048_SYNC_STATUS); - - dprintk(1, "%s() status =0x%02x\n", __func__, reg); - - if (reg & 0x02) - *status |= FE_HAS_CARRIER; - - if (reg & 0x04) - *status |= FE_HAS_SIGNAL; - - if (reg & 0x08) { - *status |= FE_HAS_LOCK; - *status |= FE_HAS_VITERBI; - *status |= FE_HAS_SYNC; - } - - return 0; -} - -static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - struct tda10048_state *state = fe->demodulator_priv; - static u32 cber_current; - u32 cber_nmax; - u64 cber_tmp; - - dprintk(1, "%s()\n", __func__); - - /* update cber on interrupt */ - if (tda10048_readreg(state, TDA10048_SOFT_IT_C3) & 0x01) { - cber_tmp = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 | - tda10048_readreg(state, TDA10048_CBER_LSB); - cber_nmax = tda10048_readreg(state, TDA10048_CBER_NMAX_MSB) << 8 | - tda10048_readreg(state, TDA10048_CBER_NMAX_LSB); - cber_tmp *= 100000000; - cber_tmp *= 2; - cber_tmp = div_u64(cber_tmp, (cber_nmax * 32) + 1); - cber_current = (u32)cber_tmp; - /* retrigger cber acquisition */ - tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x39); - } - /* actual cber is (*ber)/1e8 */ - *ber = cber_current; - - return 0; -} - -static int tda10048_read_signal_strength(struct dvb_frontend *fe, - u16 *signal_strength) -{ - struct tda10048_state *state = fe->demodulator_priv; - u8 v; - - dprintk(1, "%s()\n", __func__); - - *signal_strength = 65535; - - v = tda10048_readreg(state, TDA10048_NP_OUT); - if (v > 0) - *signal_strength -= (v << 8) | v; - - return 0; -} - -/* SNR lookup table */ -static struct snr_tab { - u8 val; - u8 data; -} snr_tab[] = { - { 0, 0 }, - { 1, 246 }, - { 2, 215 }, - { 3, 198 }, - { 4, 185 }, - { 5, 176 }, - { 6, 168 }, - { 7, 161 }, - { 8, 155 }, - { 9, 150 }, - { 10, 146 }, - { 11, 141 }, - { 12, 138 }, - { 13, 134 }, - { 14, 131 }, - { 15, 128 }, - { 16, 125 }, - { 17, 122 }, - { 18, 120 }, - { 19, 118 }, - { 20, 115 }, - { 21, 113 }, - { 22, 111 }, - { 23, 109 }, - { 24, 107 }, - { 25, 106 }, - { 26, 104 }, - { 27, 102 }, - { 28, 101 }, - { 29, 99 }, - { 30, 98 }, - { 31, 96 }, - { 32, 95 }, - { 33, 94 }, - { 34, 92 }, - { 35, 91 }, - { 36, 90 }, - { 37, 89 }, - { 38, 88 }, - { 39, 86 }, - { 40, 85 }, - { 41, 84 }, - { 42, 83 }, - { 43, 82 }, - { 44, 81 }, - { 45, 80 }, - { 46, 79 }, - { 47, 78 }, - { 48, 77 }, - { 49, 76 }, - { 50, 76 }, - { 51, 75 }, - { 52, 74 }, - { 53, 73 }, - { 54, 72 }, - { 56, 71 }, - { 57, 70 }, - { 58, 69 }, - { 60, 68 }, - { 61, 67 }, - { 63, 66 }, - { 64, 65 }, - { 66, 64 }, - { 67, 63 }, - { 68, 62 }, - { 69, 62 }, - { 70, 61 }, - { 72, 60 }, - { 74, 59 }, - { 75, 58 }, - { 77, 57 }, - { 79, 56 }, - { 81, 55 }, - { 83, 54 }, - { 85, 53 }, - { 87, 52 }, - { 89, 51 }, - { 91, 50 }, - { 93, 49 }, - { 95, 48 }, - { 97, 47 }, - { 100, 46 }, - { 102, 45 }, - { 104, 44 }, - { 107, 43 }, - { 109, 42 }, - { 112, 41 }, - { 114, 40 }, - { 117, 39 }, - { 120, 38 }, - { 123, 37 }, - { 125, 36 }, - { 128, 35 }, - { 131, 34 }, - { 134, 33 }, - { 138, 32 }, - { 141, 31 }, - { 144, 30 }, - { 147, 29 }, - { 151, 28 }, - { 154, 27 }, - { 158, 26 }, - { 162, 25 }, - { 165, 24 }, - { 169, 23 }, - { 173, 22 }, - { 177, 21 }, - { 181, 20 }, - { 186, 19 }, - { 190, 18 }, - { 194, 17 }, - { 199, 16 }, - { 204, 15 }, - { 208, 14 }, - { 213, 13 }, - { 218, 12 }, - { 223, 11 }, - { 229, 10 }, - { 234, 9 }, - { 239, 8 }, - { 245, 7 }, - { 251, 6 }, - { 255, 5 }, -}; - -static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - struct tda10048_state *state = fe->demodulator_priv; - u8 v; - int i, ret = -EINVAL; - - dprintk(1, "%s()\n", __func__); - - v = tda10048_readreg(state, TDA10048_NP_OUT); - for (i = 0; i < ARRAY_SIZE(snr_tab); i++) { - if (v <= snr_tab[i].val) { - *snr = snr_tab[i].data; - ret = 0; - break; - } - } - - return ret; -} - -static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - struct tda10048_state *state = fe->demodulator_priv; - - dprintk(1, "%s()\n", __func__); - - *ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 | - tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB); - /* clear the uncorrected TS packets counter when saturated */ - if (*ucblocks == 0xFFFF) - tda10048_writereg(state, TDA10048_UNCOR_CTRL, 0x80); - - return 0; -} - -static int tda10048_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct tda10048_state *state = fe->demodulator_priv; - - dprintk(1, "%s()\n", __func__); - - p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1) - & 0x20 ? INVERSION_ON : INVERSION_OFF; - - return tda10048_get_tps(state, p); -} - -static int tda10048_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *tune) -{ - tune->min_delay_ms = 1000; - return 0; -} - -static void tda10048_release(struct dvb_frontend *fe) -{ - struct tda10048_state *state = fe->demodulator_priv; - dprintk(1, "%s()\n", __func__); - kfree(state); -} - -static void tda10048_establish_defaults(struct dvb_frontend *fe) -{ - struct tda10048_state *state = fe->demodulator_priv; - struct tda10048_config *config = &state->config; - - /* Validate/default the config */ - if (config->dtv6_if_freq_khz == 0) { - config->dtv6_if_freq_khz = TDA10048_IF_4300; - printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz " - "is not set (defaulting to %d)\n", - __func__, - config->dtv6_if_freq_khz); - } - - if (config->dtv7_if_freq_khz == 0) { - config->dtv7_if_freq_khz = TDA10048_IF_4300; - printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz " - "is not set (defaulting to %d)\n", - __func__, - config->dtv7_if_freq_khz); - } - - if (config->dtv8_if_freq_khz == 0) { - config->dtv8_if_freq_khz = TDA10048_IF_4300; - printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz " - "is not set (defaulting to %d)\n", - __func__, - config->dtv8_if_freq_khz); - } - - if (config->clk_freq_khz == 0) { - config->clk_freq_khz = TDA10048_CLK_16000; - printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz " - "is not set (defaulting to %d)\n", - __func__, - config->clk_freq_khz); - } -} - -static struct dvb_frontend_ops tda10048_ops; - -struct dvb_frontend *tda10048_attach(const struct tda10048_config *config, - struct i2c_adapter *i2c) -{ - struct tda10048_state *state = NULL; - - dprintk(1, "%s()\n", __func__); - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct tda10048_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state and clone the config */ - memcpy(&state->config, config, sizeof(*config)); - state->i2c = i2c; - state->fwloaded = config->no_firmware; - state->bandwidth = 8000000; - - /* check if the demod is present */ - if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048) - goto error; - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &tda10048_ops, - sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - - /* set pll */ - if (config->set_pll) { - state->pll_mfactor = config->pll_m; - state->pll_nfactor = config->pll_n; - state->pll_pfactor = config->pll_p; - } else { - state->pll_mfactor = 10; - state->pll_nfactor = 3; - state->pll_pfactor = 0; - } - - /* Establish any defaults the the user didn't pass */ - tda10048_establish_defaults(&state->frontend); - - /* Set the xtal and freq defaults */ - if (tda10048_set_if(&state->frontend, 8000000) != 0) - goto error; - - /* Default bandwidth */ - if (tda10048_set_bandwidth(&state->frontend, 8000000) != 0) - goto error; - - /* Leave the gate closed */ - tda10048_i2c_gate_ctrl(&state->frontend, 0); - - return &state->frontend; - -error: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(tda10048_attach); - -static struct dvb_frontend_ops tda10048_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "NXP TDA10048HN DVB-T", - .frequency_min = 177000000, - .frequency_max = 858000000, - .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_GUARD_INTERVAL_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER - }, - - .release = tda10048_release, - .init = tda10048_init, - .i2c_gate_ctrl = tda10048_i2c_gate_ctrl, - .set_frontend = tda10048_set_frontend, - .get_frontend = tda10048_get_frontend, - .get_tune_settings = tda10048_get_tune_settings, - .read_status = tda10048_read_status, - .read_ber = tda10048_read_ber, - .read_signal_strength = tda10048_read_signal_strength, - .read_snr = tda10048_read_snr, - .read_ucblocks = tda10048_read_ucblocks, -}; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Enable verbose debug messages"); - -MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver"); -MODULE_AUTHOR("Steven Toth"); -MODULE_LICENSE("GPL"); |