1164 lines
29 KiB
C
Executable file
1164 lines
29 KiB
C
Executable file
/*
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* Realtek RTL2832 DVB-T demodulator driver
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*
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* Copyright (C) 2012 Thomas Mair <thomas.mair86@gmail.com>
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* Copyright (C) 2012-2014 Antti Palosaari <crope@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "rtl2832_priv.h"
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#define REG_MASK(b) (BIT(b + 1) - 1)
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static const struct rtl2832_reg_entry registers[] = {
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[DVBT_SOFT_RST] = {0x101, 2, 2},
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[DVBT_IIC_REPEAT] = {0x101, 3, 3},
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[DVBT_TR_WAIT_MIN_8K] = {0x188, 11, 2},
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[DVBT_RSD_BER_FAIL_VAL] = {0x18f, 15, 0},
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[DVBT_EN_BK_TRK] = {0x1a6, 7, 7},
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[DVBT_AD_EN_REG] = {0x008, 7, 7},
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[DVBT_AD_EN_REG1] = {0x008, 6, 6},
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[DVBT_EN_BBIN] = {0x1b1, 0, 0},
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[DVBT_MGD_THD0] = {0x195, 7, 0},
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[DVBT_MGD_THD1] = {0x196, 7, 0},
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[DVBT_MGD_THD2] = {0x197, 7, 0},
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[DVBT_MGD_THD3] = {0x198, 7, 0},
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[DVBT_MGD_THD4] = {0x199, 7, 0},
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[DVBT_MGD_THD5] = {0x19a, 7, 0},
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[DVBT_MGD_THD6] = {0x19b, 7, 0},
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[DVBT_MGD_THD7] = {0x19c, 7, 0},
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[DVBT_EN_CACQ_NOTCH] = {0x161, 4, 4},
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[DVBT_AD_AV_REF] = {0x009, 6, 0},
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[DVBT_REG_PI] = {0x00a, 2, 0},
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[DVBT_PIP_ON] = {0x021, 3, 3},
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[DVBT_SCALE1_B92] = {0x292, 7, 0},
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[DVBT_SCALE1_B93] = {0x293, 7, 0},
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[DVBT_SCALE1_BA7] = {0x2a7, 7, 0},
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[DVBT_SCALE1_BA9] = {0x2a9, 7, 0},
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[DVBT_SCALE1_BAA] = {0x2aa, 7, 0},
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[DVBT_SCALE1_BAB] = {0x2ab, 7, 0},
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[DVBT_SCALE1_BAC] = {0x2ac, 7, 0},
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[DVBT_SCALE1_BB0] = {0x2b0, 7, 0},
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[DVBT_SCALE1_BB1] = {0x2b1, 7, 0},
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[DVBT_KB_P1] = {0x164, 3, 1},
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[DVBT_KB_P2] = {0x164, 6, 4},
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[DVBT_KB_P3] = {0x165, 2, 0},
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[DVBT_OPT_ADC_IQ] = {0x006, 5, 4},
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[DVBT_AD_AVI] = {0x009, 1, 0},
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[DVBT_AD_AVQ] = {0x009, 3, 2},
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[DVBT_K1_CR_STEP12] = {0x2ad, 9, 4},
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[DVBT_TRK_KS_P2] = {0x16f, 2, 0},
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[DVBT_TRK_KS_I2] = {0x170, 5, 3},
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[DVBT_TR_THD_SET2] = {0x172, 3, 0},
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[DVBT_TRK_KC_P2] = {0x173, 5, 3},
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[DVBT_TRK_KC_I2] = {0x175, 2, 0},
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[DVBT_CR_THD_SET2] = {0x176, 7, 6},
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[DVBT_PSET_IFFREQ] = {0x119, 21, 0},
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[DVBT_SPEC_INV] = {0x115, 0, 0},
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[DVBT_RSAMP_RATIO] = {0x19f, 27, 2},
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[DVBT_CFREQ_OFF_RATIO] = {0x19d, 23, 4},
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[DVBT_FSM_STAGE] = {0x351, 6, 3},
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[DVBT_RX_CONSTEL] = {0x33c, 3, 2},
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[DVBT_RX_HIER] = {0x33c, 6, 4},
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[DVBT_RX_C_RATE_LP] = {0x33d, 2, 0},
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[DVBT_RX_C_RATE_HP] = {0x33d, 5, 3},
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[DVBT_GI_IDX] = {0x351, 1, 0},
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[DVBT_FFT_MODE_IDX] = {0x351, 2, 2},
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[DVBT_RSD_BER_EST] = {0x34e, 15, 0},
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[DVBT_CE_EST_EVM] = {0x40c, 15, 0},
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[DVBT_RF_AGC_VAL] = {0x35b, 13, 0},
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[DVBT_IF_AGC_VAL] = {0x359, 13, 0},
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[DVBT_DAGC_VAL] = {0x305, 7, 0},
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[DVBT_SFREQ_OFF] = {0x318, 13, 0},
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[DVBT_CFREQ_OFF] = {0x35f, 17, 0},
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[DVBT_POLAR_RF_AGC] = {0x00e, 1, 1},
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[DVBT_POLAR_IF_AGC] = {0x00e, 0, 0},
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[DVBT_AAGC_HOLD] = {0x104, 5, 5},
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[DVBT_EN_RF_AGC] = {0x104, 6, 6},
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[DVBT_EN_IF_AGC] = {0x104, 7, 7},
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[DVBT_IF_AGC_MIN] = {0x108, 7, 0},
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[DVBT_IF_AGC_MAX] = {0x109, 7, 0},
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[DVBT_RF_AGC_MIN] = {0x10a, 7, 0},
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[DVBT_RF_AGC_MAX] = {0x10b, 7, 0},
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[DVBT_IF_AGC_MAN] = {0x10c, 6, 6},
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[DVBT_IF_AGC_MAN_VAL] = {0x10c, 13, 0},
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[DVBT_RF_AGC_MAN] = {0x10e, 6, 6},
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[DVBT_RF_AGC_MAN_VAL] = {0x10e, 13, 0},
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[DVBT_DAGC_TRG_VAL] = {0x112, 7, 0},
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[DVBT_AGC_TARG_VAL_0] = {0x102, 0, 0},
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[DVBT_AGC_TARG_VAL_8_1] = {0x103, 7, 0},
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[DVBT_AAGC_LOOP_GAIN] = {0x1c7, 5, 1},
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[DVBT_LOOP_GAIN2_3_0] = {0x104, 4, 1},
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[DVBT_LOOP_GAIN2_4] = {0x105, 7, 7},
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[DVBT_LOOP_GAIN3] = {0x1c8, 4, 0},
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[DVBT_VTOP1] = {0x106, 5, 0},
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[DVBT_VTOP2] = {0x1c9, 5, 0},
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[DVBT_VTOP3] = {0x1ca, 5, 0},
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[DVBT_KRF1] = {0x1cb, 7, 0},
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[DVBT_KRF2] = {0x107, 7, 0},
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[DVBT_KRF3] = {0x1cd, 7, 0},
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[DVBT_KRF4] = {0x1ce, 7, 0},
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[DVBT_EN_GI_PGA] = {0x1e5, 0, 0},
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[DVBT_THD_LOCK_UP] = {0x1d9, 8, 0},
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[DVBT_THD_LOCK_DW] = {0x1db, 8, 0},
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[DVBT_THD_UP1] = {0x1dd, 7, 0},
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[DVBT_THD_DW1] = {0x1de, 7, 0},
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[DVBT_INTER_CNT_LEN] = {0x1d8, 3, 0},
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[DVBT_GI_PGA_STATE] = {0x1e6, 3, 3},
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[DVBT_EN_AGC_PGA] = {0x1d7, 0, 0},
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[DVBT_CKOUTPAR] = {0x17b, 5, 5},
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[DVBT_CKOUT_PWR] = {0x17b, 6, 6},
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[DVBT_SYNC_DUR] = {0x17b, 7, 7},
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[DVBT_ERR_DUR] = {0x17c, 0, 0},
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[DVBT_SYNC_LVL] = {0x17c, 1, 1},
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[DVBT_ERR_LVL] = {0x17c, 2, 2},
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[DVBT_VAL_LVL] = {0x17c, 3, 3},
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[DVBT_SERIAL] = {0x17c, 4, 4},
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[DVBT_SER_LSB] = {0x17c, 5, 5},
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[DVBT_CDIV_PH0] = {0x17d, 3, 0},
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[DVBT_CDIV_PH1] = {0x17d, 7, 4},
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[DVBT_MPEG_IO_OPT_2_2] = {0x006, 7, 7},
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[DVBT_MPEG_IO_OPT_1_0] = {0x007, 7, 6},
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[DVBT_CKOUTPAR_PIP] = {0x0b7, 4, 4},
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[DVBT_CKOUT_PWR_PIP] = {0x0b7, 3, 3},
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[DVBT_SYNC_LVL_PIP] = {0x0b7, 2, 2},
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[DVBT_ERR_LVL_PIP] = {0x0b7, 1, 1},
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[DVBT_VAL_LVL_PIP] = {0x0b7, 0, 0},
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[DVBT_CKOUTPAR_PID] = {0x0b9, 4, 4},
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[DVBT_CKOUT_PWR_PID] = {0x0b9, 3, 3},
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[DVBT_SYNC_LVL_PID] = {0x0b9, 2, 2},
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[DVBT_ERR_LVL_PID] = {0x0b9, 1, 1},
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[DVBT_VAL_LVL_PID] = {0x0b9, 0, 0},
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[DVBT_SM_PASS] = {0x193, 11, 0},
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[DVBT_AD7_SETTING] = {0x011, 15, 0},
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[DVBT_RSSI_R] = {0x301, 6, 0},
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[DVBT_ACI_DET_IND] = {0x312, 0, 0},
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[DVBT_REG_MON] = {0x00d, 1, 0},
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[DVBT_REG_MONSEL] = {0x00d, 2, 2},
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[DVBT_REG_GPE] = {0x00d, 7, 7},
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[DVBT_REG_GPO] = {0x010, 0, 0},
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[DVBT_REG_4MSEL] = {0x013, 0, 0},
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};
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static int rtl2832_rd_demod_reg(struct rtl2832_dev *dev, int reg, u32 *val)
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{
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struct i2c_client *client = dev->client;
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int ret, i;
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u16 reg_start_addr;
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u8 msb, lsb, reading[4], len;
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u32 reading_tmp, mask;
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reg_start_addr = registers[reg].start_address;
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msb = registers[reg].msb;
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lsb = registers[reg].lsb;
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len = (msb >> 3) + 1;
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mask = REG_MASK(msb - lsb);
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ret = regmap_bulk_read(dev->regmap, reg_start_addr, reading, len);
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if (ret)
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goto err;
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reading_tmp = 0;
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for (i = 0; i < len; i++)
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reading_tmp |= reading[i] << ((len - 1 - i) * 8);
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*val = (reading_tmp >> lsb) & mask;
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int rtl2832_wr_demod_reg(struct rtl2832_dev *dev, int reg, u32 val)
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{
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struct i2c_client *client = dev->client;
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int ret, i;
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u16 reg_start_addr;
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u8 msb, lsb, reading[4], writing[4], len;
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u32 reading_tmp, writing_tmp, mask;
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reg_start_addr = registers[reg].start_address;
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msb = registers[reg].msb;
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lsb = registers[reg].lsb;
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len = (msb >> 3) + 1;
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mask = REG_MASK(msb - lsb);
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ret = regmap_bulk_read(dev->regmap, reg_start_addr, reading, len);
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if (ret)
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goto err;
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reading_tmp = 0;
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for (i = 0; i < len; i++)
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reading_tmp |= reading[i] << ((len - 1 - i) * 8);
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writing_tmp = reading_tmp & ~(mask << lsb);
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writing_tmp |= ((val & mask) << lsb);
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for (i = 0; i < len; i++)
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writing[i] = (writing_tmp >> ((len - 1 - i) * 8)) & 0xff;
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ret = regmap_bulk_write(dev->regmap, reg_start_addr, writing, len);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int rtl2832_set_if(struct dvb_frontend *fe, u32 if_freq)
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{
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struct rtl2832_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = dev->client;
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int ret;
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u64 pset_iffreq;
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u8 en_bbin = (if_freq == 0 ? 0x1 : 0x0);
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/*
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* PSET_IFFREQ = - floor((IfFreqHz % CrystalFreqHz) * pow(2, 22)
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* / CrystalFreqHz)
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*/
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pset_iffreq = if_freq % dev->pdata->clk;
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pset_iffreq *= 0x400000;
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pset_iffreq = div_u64(pset_iffreq, dev->pdata->clk);
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pset_iffreq = -pset_iffreq;
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pset_iffreq = pset_iffreq & 0x3fffff;
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dev_dbg(&client->dev, "if_frequency=%d pset_iffreq=%08x\n",
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if_freq, (unsigned)pset_iffreq);
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ret = rtl2832_wr_demod_reg(dev, DVBT_EN_BBIN, en_bbin);
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if (ret)
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goto err;
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ret = rtl2832_wr_demod_reg(dev, DVBT_PSET_IFFREQ, pset_iffreq);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int rtl2832_init(struct dvb_frontend *fe)
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{
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struct rtl2832_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
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const struct rtl2832_reg_value *init;
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int i, ret, len;
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/* initialization values for the demodulator registers */
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struct rtl2832_reg_value rtl2832_initial_regs[] = {
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{DVBT_AD_EN_REG, 0x1},
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{DVBT_AD_EN_REG1, 0x1},
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{DVBT_RSD_BER_FAIL_VAL, 0x2800},
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{DVBT_MGD_THD0, 0x10},
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{DVBT_MGD_THD1, 0x20},
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{DVBT_MGD_THD2, 0x20},
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{DVBT_MGD_THD3, 0x40},
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{DVBT_MGD_THD4, 0x22},
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{DVBT_MGD_THD5, 0x32},
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{DVBT_MGD_THD6, 0x37},
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{DVBT_MGD_THD7, 0x39},
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{DVBT_EN_BK_TRK, 0x0},
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{DVBT_EN_CACQ_NOTCH, 0x0},
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{DVBT_AD_AV_REF, 0x2a},
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{DVBT_REG_PI, 0x6},
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{DVBT_PIP_ON, 0x0},
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{DVBT_CDIV_PH0, 0x8},
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{DVBT_CDIV_PH1, 0x8},
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{DVBT_SCALE1_B92, 0x4},
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{DVBT_SCALE1_B93, 0xb0},
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{DVBT_SCALE1_BA7, 0x78},
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{DVBT_SCALE1_BA9, 0x28},
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{DVBT_SCALE1_BAA, 0x59},
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{DVBT_SCALE1_BAB, 0x83},
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{DVBT_SCALE1_BAC, 0xd4},
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{DVBT_SCALE1_BB0, 0x65},
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{DVBT_SCALE1_BB1, 0x43},
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{DVBT_KB_P1, 0x1},
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{DVBT_KB_P2, 0x4},
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{DVBT_KB_P3, 0x7},
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{DVBT_K1_CR_STEP12, 0xa},
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{DVBT_REG_GPE, 0x1},
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{DVBT_SERIAL, 0x0},
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{DVBT_CDIV_PH0, 0x9},
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{DVBT_CDIV_PH1, 0x9},
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{DVBT_MPEG_IO_OPT_2_2, 0x0},
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{DVBT_MPEG_IO_OPT_1_0, 0x0},
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{DVBT_TRK_KS_P2, 0x4},
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{DVBT_TRK_KS_I2, 0x7},
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{DVBT_TR_THD_SET2, 0x6},
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{DVBT_TRK_KC_I2, 0x5},
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{DVBT_CR_THD_SET2, 0x1},
|
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};
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|
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dev_dbg(&client->dev, "\n");
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ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x0);
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if (ret)
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goto err;
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|
|
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for (i = 0; i < ARRAY_SIZE(rtl2832_initial_regs); i++) {
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ret = rtl2832_wr_demod_reg(dev, rtl2832_initial_regs[i].reg,
|
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rtl2832_initial_regs[i].value);
|
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if (ret)
|
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goto err;
|
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}
|
|
|
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/* load tuner specific settings */
|
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dev_dbg(&client->dev, "load settings for tuner=%02x\n",
|
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dev->pdata->tuner);
|
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switch (dev->pdata->tuner) {
|
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case RTL2832_TUNER_FC2580:
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len = ARRAY_SIZE(rtl2832_tuner_init_fc2580);
|
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init = rtl2832_tuner_init_fc2580;
|
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break;
|
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case RTL2832_TUNER_FC0012:
|
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case RTL2832_TUNER_FC0013:
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len = ARRAY_SIZE(rtl2832_tuner_init_fc0012);
|
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init = rtl2832_tuner_init_fc0012;
|
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break;
|
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case RTL2832_TUNER_TUA9001:
|
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len = ARRAY_SIZE(rtl2832_tuner_init_tua9001);
|
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init = rtl2832_tuner_init_tua9001;
|
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break;
|
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case RTL2832_TUNER_E4000:
|
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len = ARRAY_SIZE(rtl2832_tuner_init_e4000);
|
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init = rtl2832_tuner_init_e4000;
|
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break;
|
|
case RTL2832_TUNER_R820T:
|
|
case RTL2832_TUNER_R828D:
|
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len = ARRAY_SIZE(rtl2832_tuner_init_r820t);
|
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init = rtl2832_tuner_init_r820t;
|
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break;
|
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case RTL2832_TUNER_SI2157:
|
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len = ARRAY_SIZE(rtl2832_tuner_init_si2157);
|
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init = rtl2832_tuner_init_si2157;
|
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break;
|
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default:
|
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ret = -EINVAL;
|
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goto err;
|
|
}
|
|
|
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for (i = 0; i < len; i++) {
|
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ret = rtl2832_wr_demod_reg(dev, init[i].reg, init[i].value);
|
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if (ret)
|
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goto err;
|
|
}
|
|
|
|
/* init stats here in order signal app which stats are supported */
|
|
c->strength.len = 1;
|
|
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->cnr.len = 1;
|
|
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_error.len = 1;
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_count.len = 1;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
dev->sleeping = false;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
dev->sleeping = true;
|
|
dev->fe_status = 0;
|
|
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x1);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_get_tune_settings(struct dvb_frontend *fe,
|
|
struct dvb_frontend_tune_settings *s)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
s->min_delay_ms = 1000;
|
|
s->step_size = fe->ops.info.frequency_stepsize_hz * 2;
|
|
s->max_drift = (fe->ops.info.frequency_stepsize_hz * 2) + 1;
|
|
return 0;
|
|
}
|
|
|
|
static int rtl2832_set_frontend(struct dvb_frontend *fe)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int ret, i, j;
|
|
u64 bw_mode, num, num2;
|
|
u32 resamp_ratio, cfreq_off_ratio;
|
|
static u8 bw_params[3][32] = {
|
|
/* 6 MHz bandwidth */
|
|
{
|
|
0xf5, 0xff, 0x15, 0x38, 0x5d, 0x6d, 0x52, 0x07, 0xfa, 0x2f,
|
|
0x53, 0xf5, 0x3f, 0xca, 0x0b, 0x91, 0xea, 0x30, 0x63, 0xb2,
|
|
0x13, 0xda, 0x0b, 0xc4, 0x18, 0x7e, 0x16, 0x66, 0x08, 0x67,
|
|
0x19, 0xe0,
|
|
},
|
|
|
|
/* 7 MHz bandwidth */
|
|
{
|
|
0xe7, 0xcc, 0xb5, 0xba, 0xe8, 0x2f, 0x67, 0x61, 0x00, 0xaf,
|
|
0x86, 0xf2, 0xbf, 0x59, 0x04, 0x11, 0xb6, 0x33, 0xa4, 0x30,
|
|
0x15, 0x10, 0x0a, 0x42, 0x18, 0xf8, 0x17, 0xd9, 0x07, 0x22,
|
|
0x19, 0x10,
|
|
},
|
|
|
|
/* 8 MHz bandwidth */
|
|
{
|
|
0x09, 0xf6, 0xd2, 0xa7, 0x9a, 0xc9, 0x27, 0x77, 0x06, 0xbf,
|
|
0xec, 0xf4, 0x4f, 0x0b, 0xfc, 0x01, 0x63, 0x35, 0x54, 0xa7,
|
|
0x16, 0x66, 0x08, 0xb4, 0x19, 0x6e, 0x19, 0x65, 0x05, 0xc8,
|
|
0x19, 0xe0,
|
|
},
|
|
};
|
|
|
|
dev_dbg(&client->dev, "frequency=%u bandwidth_hz=%u inversion=%u\n",
|
|
c->frequency, c->bandwidth_hz, c->inversion);
|
|
|
|
/* program tuner */
|
|
if (fe->ops.tuner_ops.set_params)
|
|
fe->ops.tuner_ops.set_params(fe);
|
|
|
|
/* If the frontend has get_if_frequency(), use it */
|
|
if (fe->ops.tuner_ops.get_if_frequency) {
|
|
u32 if_freq;
|
|
|
|
ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = rtl2832_set_if(fe, if_freq);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
switch (c->bandwidth_hz) {
|
|
case 6000000:
|
|
i = 0;
|
|
bw_mode = 48000000;
|
|
break;
|
|
case 7000000:
|
|
i = 1;
|
|
bw_mode = 56000000;
|
|
break;
|
|
case 8000000:
|
|
i = 2;
|
|
bw_mode = 64000000;
|
|
break;
|
|
default:
|
|
dev_err(&client->dev, "invalid bandwidth_hz %u\n",
|
|
c->bandwidth_hz);
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
for (j = 0; j < sizeof(bw_params[0]); j++) {
|
|
ret = regmap_bulk_write(dev->regmap,
|
|
0x11c + j, &bw_params[i][j], 1);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
/* calculate and set resample ratio
|
|
* RSAMP_RATIO = floor(CrystalFreqHz * 7 * pow(2, 22)
|
|
* / ConstWithBandwidthMode)
|
|
*/
|
|
num = dev->pdata->clk * 7ULL;
|
|
num *= 0x400000;
|
|
num = div_u64(num, bw_mode);
|
|
resamp_ratio = num & 0x3ffffff;
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_RSAMP_RATIO, resamp_ratio);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* calculate and set cfreq off ratio
|
|
* CFREQ_OFF_RATIO = - floor(ConstWithBandwidthMode * pow(2, 20)
|
|
* / (CrystalFreqHz * 7))
|
|
*/
|
|
num = bw_mode << 20;
|
|
num2 = dev->pdata->clk * 7ULL;
|
|
num = div_u64(num, num2);
|
|
num = -num;
|
|
cfreq_off_ratio = num & 0xfffff;
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_CFREQ_OFF_RATIO, cfreq_off_ratio);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* soft reset */
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x1);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x0);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_get_frontend(struct dvb_frontend *fe,
|
|
struct dtv_frontend_properties *c)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
u8 buf[3];
|
|
|
|
if (dev->sleeping)
|
|
return 0;
|
|
|
|
ret = regmap_bulk_read(dev->regmap, 0x33c, buf, 2);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_bulk_read(dev->regmap, 0x351, &buf[2], 1);
|
|
if (ret)
|
|
goto err;
|
|
|
|
dev_dbg(&client->dev, "TPS=%*ph\n", 3, buf);
|
|
|
|
switch ((buf[0] >> 2) & 3) {
|
|
case 0:
|
|
c->modulation = QPSK;
|
|
break;
|
|
case 1:
|
|
c->modulation = QAM_16;
|
|
break;
|
|
case 2:
|
|
c->modulation = QAM_64;
|
|
break;
|
|
}
|
|
|
|
switch ((buf[2] >> 2) & 1) {
|
|
case 0:
|
|
c->transmission_mode = TRANSMISSION_MODE_2K;
|
|
break;
|
|
case 1:
|
|
c->transmission_mode = TRANSMISSION_MODE_8K;
|
|
}
|
|
|
|
switch ((buf[2] >> 0) & 3) {
|
|
case 0:
|
|
c->guard_interval = GUARD_INTERVAL_1_32;
|
|
break;
|
|
case 1:
|
|
c->guard_interval = GUARD_INTERVAL_1_16;
|
|
break;
|
|
case 2:
|
|
c->guard_interval = GUARD_INTERVAL_1_8;
|
|
break;
|
|
case 3:
|
|
c->guard_interval = GUARD_INTERVAL_1_4;
|
|
break;
|
|
}
|
|
|
|
switch ((buf[0] >> 4) & 7) {
|
|
case 0:
|
|
c->hierarchy = HIERARCHY_NONE;
|
|
break;
|
|
case 1:
|
|
c->hierarchy = HIERARCHY_1;
|
|
break;
|
|
case 2:
|
|
c->hierarchy = HIERARCHY_2;
|
|
break;
|
|
case 3:
|
|
c->hierarchy = HIERARCHY_4;
|
|
break;
|
|
}
|
|
|
|
switch ((buf[1] >> 3) & 7) {
|
|
case 0:
|
|
c->code_rate_HP = FEC_1_2;
|
|
break;
|
|
case 1:
|
|
c->code_rate_HP = FEC_2_3;
|
|
break;
|
|
case 2:
|
|
c->code_rate_HP = FEC_3_4;
|
|
break;
|
|
case 3:
|
|
c->code_rate_HP = FEC_5_6;
|
|
break;
|
|
case 4:
|
|
c->code_rate_HP = FEC_7_8;
|
|
break;
|
|
}
|
|
|
|
switch ((buf[1] >> 0) & 7) {
|
|
case 0:
|
|
c->code_rate_LP = FEC_1_2;
|
|
break;
|
|
case 1:
|
|
c->code_rate_LP = FEC_2_3;
|
|
break;
|
|
case 2:
|
|
c->code_rate_LP = FEC_3_4;
|
|
break;
|
|
case 3:
|
|
c->code_rate_LP = FEC_5_6;
|
|
break;
|
|
case 4:
|
|
c->code_rate_LP = FEC_7_8;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_read_status(struct dvb_frontend *fe, enum fe_status *status)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int ret;
|
|
u32 uninitialized_var(tmp);
|
|
u8 u8tmp, buf[2];
|
|
u16 u16tmp;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
*status = 0;
|
|
if (dev->sleeping)
|
|
return 0;
|
|
|
|
ret = rtl2832_rd_demod_reg(dev, DVBT_FSM_STAGE, &tmp);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (tmp == 11) {
|
|
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
|
|
FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
|
|
} else if (tmp == 10) {
|
|
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
|
|
FE_HAS_VITERBI;
|
|
}
|
|
|
|
dev->fe_status = *status;
|
|
|
|
/* signal strength */
|
|
if (dev->fe_status & FE_HAS_SIGNAL) {
|
|
/* read digital AGC */
|
|
ret = regmap_bulk_read(dev->regmap, 0x305, &u8tmp, 1);
|
|
if (ret)
|
|
goto err;
|
|
|
|
dev_dbg(&client->dev, "digital agc=%02x", u8tmp);
|
|
|
|
u8tmp = ~u8tmp;
|
|
u16tmp = u8tmp << 8 | u8tmp << 0;
|
|
|
|
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
|
|
c->strength.stat[0].uvalue = u16tmp;
|
|
} else {
|
|
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
}
|
|
|
|
/* CNR */
|
|
if (dev->fe_status & FE_HAS_VITERBI) {
|
|
unsigned hierarchy, constellation;
|
|
#define CONSTELLATION_NUM 3
|
|
#define HIERARCHY_NUM 4
|
|
static const u32 constant[CONSTELLATION_NUM][HIERARCHY_NUM] = {
|
|
{85387325, 85387325, 85387325, 85387325},
|
|
{86676178, 86676178, 87167949, 87795660},
|
|
{87659938, 87659938, 87885178, 88241743},
|
|
};
|
|
|
|
ret = regmap_bulk_read(dev->regmap, 0x33c, &u8tmp, 1);
|
|
if (ret)
|
|
goto err;
|
|
|
|
constellation = (u8tmp >> 2) & 0x03; /* [3:2] */
|
|
if (constellation > CONSTELLATION_NUM - 1)
|
|
goto err;
|
|
|
|
hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */
|
|
if (hierarchy > HIERARCHY_NUM - 1)
|
|
goto err;
|
|
|
|
ret = regmap_bulk_read(dev->regmap, 0x40c, buf, 2);
|
|
if (ret)
|
|
goto err;
|
|
|
|
u16tmp = buf[0] << 8 | buf[1] << 0;
|
|
if (u16tmp)
|
|
tmp = (constant[constellation][hierarchy] -
|
|
intlog10(u16tmp)) / ((1 << 24) / 10000);
|
|
else
|
|
tmp = 0;
|
|
|
|
dev_dbg(&client->dev, "cnr raw=%u\n", u16tmp);
|
|
|
|
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
|
|
c->cnr.stat[0].svalue = tmp;
|
|
} else {
|
|
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
}
|
|
|
|
/* BER */
|
|
if (dev->fe_status & FE_HAS_LOCK) {
|
|
ret = regmap_bulk_read(dev->regmap, 0x34e, buf, 2);
|
|
if (ret)
|
|
goto err;
|
|
|
|
u16tmp = buf[0] << 8 | buf[1] << 0;
|
|
dev->post_bit_error += u16tmp;
|
|
dev->post_bit_count += 1000000;
|
|
|
|
dev_dbg(&client->dev, "ber errors=%u total=1000000\n", u16tmp);
|
|
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
|
|
c->post_bit_error.stat[0].uvalue = dev->post_bit_error;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
|
|
c->post_bit_count.stat[0].uvalue = dev->post_bit_count;
|
|
} else {
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_read_snr(struct dvb_frontend *fe, u16 *snr)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
/* report SNR in resolution of 0.1 dB */
|
|
if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
|
|
*snr = div_s64(c->cnr.stat[0].svalue, 100);
|
|
else
|
|
*snr = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rtl2832_read_ber(struct dvb_frontend *fe, u32 *ber)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
|
|
*ber = (dev->post_bit_error - dev->post_bit_error_prev);
|
|
dev->post_bit_error_prev = dev->post_bit_error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* I2C gate/mux/repeater logic
|
|
* There is delay mechanism to avoid unneeded I2C gate open / close. Gate close
|
|
* is delayed here a little bit in order to see if there is sequence of I2C
|
|
* messages sent to same I2C bus.
|
|
*/
|
|
static void rtl2832_i2c_gate_work(struct work_struct *work)
|
|
{
|
|
struct rtl2832_dev *dev = container_of(work, struct rtl2832_dev, i2c_gate_work.work);
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
|
|
/* close gate */
|
|
ret = regmap_update_bits(dev->regmap, 0x101, 0x08, 0x00);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
}
|
|
|
|
static int rtl2832_select(struct i2c_mux_core *muxc, u32 chan_id)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_mux_priv(muxc);
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
|
|
/* terminate possible gate closing */
|
|
cancel_delayed_work(&dev->i2c_gate_work);
|
|
|
|
/* open gate */
|
|
ret = regmap_update_bits(dev->regmap, 0x101, 0x08, 0x08);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_deselect(struct i2c_mux_core *muxc, u32 chan_id)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_mux_priv(muxc);
|
|
|
|
schedule_delayed_work(&dev->i2c_gate_work, usecs_to_jiffies(100));
|
|
return 0;
|
|
}
|
|
|
|
static const struct dvb_frontend_ops rtl2832_ops = {
|
|
.delsys = { SYS_DVBT },
|
|
.info = {
|
|
.name = "Realtek RTL2832 (DVB-T)",
|
|
.frequency_min_hz = 174 * MHz,
|
|
.frequency_max_hz = 862 * MHz,
|
|
.frequency_stepsize_hz = 166667,
|
|
.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_TRANSMISSION_MODE_AUTO |
|
|
FE_CAN_GUARD_INTERVAL_AUTO |
|
|
FE_CAN_HIERARCHY_AUTO |
|
|
FE_CAN_RECOVER |
|
|
FE_CAN_MUTE_TS
|
|
},
|
|
|
|
.init = rtl2832_init,
|
|
.sleep = rtl2832_sleep,
|
|
|
|
.get_tune_settings = rtl2832_get_tune_settings,
|
|
|
|
.set_frontend = rtl2832_set_frontend,
|
|
.get_frontend = rtl2832_get_frontend,
|
|
|
|
.read_status = rtl2832_read_status,
|
|
.read_snr = rtl2832_read_snr,
|
|
.read_ber = rtl2832_read_ber,
|
|
};
|
|
|
|
static bool rtl2832_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case 0x305:
|
|
case 0x33c:
|
|
case 0x34e:
|
|
case 0x351:
|
|
case 0x40c ... 0x40d:
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static struct dvb_frontend *rtl2832_get_dvb_frontend(struct i2c_client *client)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_get_clientdata(client);
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
return &dev->fe;
|
|
}
|
|
|
|
static struct i2c_adapter *rtl2832_get_i2c_adapter(struct i2c_client *client)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_get_clientdata(client);
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
return dev->muxc->adapter[0];
|
|
}
|
|
|
|
static int rtl2832_slave_ts_ctrl(struct i2c_client *client, bool enable)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_get_clientdata(client);
|
|
int ret;
|
|
|
|
dev_dbg(&client->dev, "enable=%d\n", enable);
|
|
|
|
if (enable) {
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x0);
|
|
if (ret)
|
|
goto err;
|
|
ret = regmap_bulk_write(dev->regmap, 0x10c, "\x5f\xff", 2);
|
|
if (ret)
|
|
goto err;
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_PIP_ON, 0x1);
|
|
if (ret)
|
|
goto err;
|
|
ret = regmap_bulk_write(dev->regmap, 0x0bc, "\x18", 1);
|
|
if (ret)
|
|
goto err;
|
|
ret = regmap_bulk_write(dev->regmap, 0x192, "\x7f\xf7\xff", 3);
|
|
if (ret)
|
|
goto err;
|
|
} else {
|
|
ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3);
|
|
if (ret)
|
|
goto err;
|
|
ret = regmap_bulk_write(dev->regmap, 0x0bc, "\x08", 1);
|
|
if (ret)
|
|
goto err;
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_PIP_ON, 0x0);
|
|
if (ret)
|
|
goto err;
|
|
ret = regmap_bulk_write(dev->regmap, 0x10c, "\x00\x00", 2);
|
|
if (ret)
|
|
goto err;
|
|
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x1);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
dev->slave_ts = enable;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_pid_filter_ctrl(struct dvb_frontend *fe, int onoff)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
u8 u8tmp;
|
|
|
|
dev_dbg(&client->dev, "onoff=%d, slave_ts=%d\n", onoff, dev->slave_ts);
|
|
|
|
/* enable / disable PID filter */
|
|
if (onoff)
|
|
u8tmp = 0x80;
|
|
else
|
|
u8tmp = 0x00;
|
|
|
|
if (dev->slave_ts)
|
|
ret = regmap_update_bits(dev->regmap, 0x021, 0xc0, u8tmp);
|
|
else
|
|
ret = regmap_update_bits(dev->regmap, 0x061, 0xc0, u8tmp);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid,
|
|
int onoff)
|
|
{
|
|
struct rtl2832_dev *dev = fe->demodulator_priv;
|
|
struct i2c_client *client = dev->client;
|
|
int ret;
|
|
u8 buf[4];
|
|
|
|
dev_dbg(&client->dev, "index=%d pid=%04x onoff=%d slave_ts=%d\n",
|
|
index, pid, onoff, dev->slave_ts);
|
|
|
|
/* skip invalid PIDs (0x2000) */
|
|
if (pid > 0x1fff || index > 32)
|
|
return 0;
|
|
|
|
if (onoff)
|
|
set_bit(index, &dev->filters);
|
|
else
|
|
clear_bit(index, &dev->filters);
|
|
|
|
/* enable / disable PIDs */
|
|
buf[0] = (dev->filters >> 0) & 0xff;
|
|
buf[1] = (dev->filters >> 8) & 0xff;
|
|
buf[2] = (dev->filters >> 16) & 0xff;
|
|
buf[3] = (dev->filters >> 24) & 0xff;
|
|
|
|
if (dev->slave_ts)
|
|
ret = regmap_bulk_write(dev->regmap, 0x022, buf, 4);
|
|
else
|
|
ret = regmap_bulk_write(dev->regmap, 0x062, buf, 4);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* add PID */
|
|
buf[0] = (pid >> 8) & 0xff;
|
|
buf[1] = (pid >> 0) & 0xff;
|
|
|
|
if (dev->slave_ts)
|
|
ret = regmap_bulk_write(dev->regmap, 0x026 + 2 * index, buf, 2);
|
|
else
|
|
ret = regmap_bulk_write(dev->regmap, 0x066 + 2 * index, buf, 2);
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct rtl2832_platform_data *pdata = client->dev.platform_data;
|
|
struct i2c_adapter *i2c = client->adapter;
|
|
struct rtl2832_dev *dev;
|
|
int ret;
|
|
u8 tmp;
|
|
static const struct regmap_range_cfg regmap_range_cfg[] = {
|
|
{
|
|
.selector_reg = 0x00,
|
|
.selector_mask = 0xff,
|
|
.selector_shift = 0,
|
|
.window_start = 0,
|
|
.window_len = 0x100,
|
|
.range_min = 0 * 0x100,
|
|
.range_max = 5 * 0x100,
|
|
},
|
|
};
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
/* allocate memory for the internal state */
|
|
dev = kzalloc(sizeof(struct rtl2832_dev), GFP_KERNEL);
|
|
if (dev == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
/* setup the state */
|
|
i2c_set_clientdata(client, dev);
|
|
dev->client = client;
|
|
dev->pdata = client->dev.platform_data;
|
|
dev->sleeping = true;
|
|
INIT_DELAYED_WORK(&dev->i2c_gate_work, rtl2832_i2c_gate_work);
|
|
/* create regmap */
|
|
dev->regmap_config.reg_bits = 8,
|
|
dev->regmap_config.val_bits = 8,
|
|
dev->regmap_config.volatile_reg = rtl2832_volatile_reg,
|
|
dev->regmap_config.max_register = 5 * 0x100,
|
|
dev->regmap_config.ranges = regmap_range_cfg,
|
|
dev->regmap_config.num_ranges = ARRAY_SIZE(regmap_range_cfg),
|
|
dev->regmap_config.cache_type = REGCACHE_NONE,
|
|
dev->regmap = regmap_init_i2c(client, &dev->regmap_config);
|
|
if (IS_ERR(dev->regmap)) {
|
|
ret = PTR_ERR(dev->regmap);
|
|
goto err_kfree;
|
|
}
|
|
|
|
/* check if the demod is there */
|
|
ret = regmap_bulk_read(dev->regmap, 0x000, &tmp, 1);
|
|
if (ret)
|
|
goto err_regmap_exit;
|
|
|
|
/* create muxed i2c adapter for demod tuner bus */
|
|
dev->muxc = i2c_mux_alloc(i2c, &i2c->dev, 1, 0, I2C_MUX_LOCKED,
|
|
rtl2832_select, rtl2832_deselect);
|
|
if (!dev->muxc) {
|
|
ret = -ENOMEM;
|
|
goto err_regmap_exit;
|
|
}
|
|
dev->muxc->priv = dev;
|
|
ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
|
|
if (ret)
|
|
goto err_regmap_exit;
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&dev->fe.ops, &rtl2832_ops, sizeof(struct dvb_frontend_ops));
|
|
dev->fe.demodulator_priv = dev;
|
|
|
|
/* setup callbacks */
|
|
pdata->get_dvb_frontend = rtl2832_get_dvb_frontend;
|
|
pdata->get_i2c_adapter = rtl2832_get_i2c_adapter;
|
|
pdata->slave_ts_ctrl = rtl2832_slave_ts_ctrl;
|
|
pdata->pid_filter = rtl2832_pid_filter;
|
|
pdata->pid_filter_ctrl = rtl2832_pid_filter_ctrl;
|
|
pdata->regmap = dev->regmap;
|
|
|
|
dev_info(&client->dev, "Realtek RTL2832 successfully attached\n");
|
|
return 0;
|
|
err_regmap_exit:
|
|
regmap_exit(dev->regmap);
|
|
err_kfree:
|
|
kfree(dev);
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int rtl2832_remove(struct i2c_client *client)
|
|
{
|
|
struct rtl2832_dev *dev = i2c_get_clientdata(client);
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
cancel_delayed_work_sync(&dev->i2c_gate_work);
|
|
|
|
i2c_mux_del_adapters(dev->muxc);
|
|
|
|
regmap_exit(dev->regmap);
|
|
|
|
kfree(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id rtl2832_id_table[] = {
|
|
{"rtl2832", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, rtl2832_id_table);
|
|
|
|
static struct i2c_driver rtl2832_driver = {
|
|
.driver = {
|
|
.name = "rtl2832",
|
|
.suppress_bind_attrs = true,
|
|
},
|
|
.probe = rtl2832_probe,
|
|
.remove = rtl2832_remove,
|
|
.id_table = rtl2832_id_table,
|
|
};
|
|
|
|
module_i2c_driver(rtl2832_driver);
|
|
|
|
MODULE_AUTHOR("Thomas Mair <mair.thomas86@gmail.com>");
|
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
|
MODULE_DESCRIPTION("Realtek RTL2832 DVB-T demodulator driver");
|
|
MODULE_LICENSE("GPL");
|