| /* |
| * mxl5007t.c - driver for the MaxLinear MxL5007T silicon tuner |
| * |
| * Copyright (C) 2008 Michael Krufky <mkrufky@linuxtv.org> |
| * |
| * 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/i2c.h> |
| #include <linux/types.h> |
| #include <linux/videodev2.h> |
| #include "tuner-i2c.h" |
| #include "mxl5007t.h" |
| |
| static DEFINE_MUTEX(mxl5007t_list_mutex); |
| static LIST_HEAD(hybrid_tuner_instance_list); |
| |
| static int mxl5007t_debug; |
| module_param_named(debug, mxl5007t_debug, int, 0644); |
| MODULE_PARM_DESC(debug, "set debug level"); |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| #define mxl_printk(kern, fmt, arg...) \ |
| printk(kern "%s: " fmt "\n", __func__, ##arg) |
| |
| #define mxl_err(fmt, arg...) \ |
| mxl_printk(KERN_ERR, "%d: " fmt, __LINE__, ##arg) |
| |
| #define mxl_warn(fmt, arg...) \ |
| mxl_printk(KERN_WARNING, fmt, ##arg) |
| |
| #define mxl_info(fmt, arg...) \ |
| mxl_printk(KERN_INFO, fmt, ##arg) |
| |
| #define mxl_debug(fmt, arg...) \ |
| ({ \ |
| if (mxl5007t_debug) \ |
| mxl_printk(KERN_DEBUG, fmt, ##arg); \ |
| }) |
| |
| #define mxl_fail(ret) \ |
| ({ \ |
| int __ret; \ |
| __ret = (ret < 0); \ |
| if (__ret) \ |
| mxl_printk(KERN_ERR, "error %d on line %d", \ |
| ret, __LINE__); \ |
| __ret; \ |
| }) |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| #define MHz 1000000 |
| |
| enum mxl5007t_mode { |
| MxL_MODE_OTA_DVBT_ATSC = 0, |
| MxL_MODE_OTA_ISDBT = 4, |
| MxL_MODE_CABLE_DIGITAL = 0x10, |
| }; |
| |
| enum mxl5007t_chip_version { |
| MxL_UNKNOWN_ID = 0x00, |
| MxL_5007_V1_F1 = 0x11, |
| MxL_5007_V1_F2 = 0x12, |
| MxL_5007_V2_100_F1 = 0x21, |
| MxL_5007_V2_100_F2 = 0x22, |
| MxL_5007_V2_200_F1 = 0x23, |
| MxL_5007_V2_200_F2 = 0x24, |
| }; |
| |
| struct reg_pair_t { |
| u8 reg; |
| u8 val; |
| }; |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static struct reg_pair_t init_tab[] = { |
| { 0x0b, 0x44 }, /* XTAL */ |
| { 0x0c, 0x60 }, /* IF */ |
| { 0x10, 0x00 }, /* MISC */ |
| { 0x12, 0xca }, /* IDAC */ |
| { 0x16, 0x90 }, /* MODE */ |
| { 0x32, 0x38 }, /* MODE Analog/Digital */ |
| { 0xd8, 0x18 }, /* CLK_OUT_ENABLE */ |
| { 0x2c, 0x34 }, /* OVERRIDE */ |
| { 0x4d, 0x40 }, /* OVERRIDE */ |
| { 0x7f, 0x02 }, /* OVERRIDE */ |
| { 0x9a, 0x52 }, /* OVERRIDE */ |
| { 0x48, 0x5a }, /* OVERRIDE */ |
| { 0x76, 0x1a }, /* OVERRIDE */ |
| { 0x6a, 0x48 }, /* OVERRIDE */ |
| { 0x64, 0x28 }, /* OVERRIDE */ |
| { 0x66, 0xe6 }, /* OVERRIDE */ |
| { 0x35, 0x0e }, /* OVERRIDE */ |
| { 0x7e, 0x01 }, /* OVERRIDE */ |
| { 0x83, 0x00 }, /* OVERRIDE */ |
| { 0x04, 0x0b }, /* OVERRIDE */ |
| { 0x05, 0x01 }, /* TOP_MASTER_ENABLE */ |
| { 0, 0 } |
| }; |
| |
| static struct reg_pair_t init_tab_cable[] = { |
| { 0x0b, 0x44 }, /* XTAL */ |
| { 0x0c, 0x60 }, /* IF */ |
| { 0x10, 0x00 }, /* MISC */ |
| { 0x12, 0xca }, /* IDAC */ |
| { 0x16, 0x90 }, /* MODE */ |
| { 0x32, 0x38 }, /* MODE A/D */ |
| { 0x71, 0x3f }, /* TOP1 */ |
| { 0x72, 0x3f }, /* TOP2 */ |
| { 0x74, 0x3f }, /* TOP3 */ |
| { 0xd8, 0x18 }, /* CLK_OUT_ENABLE */ |
| { 0x2c, 0x34 }, /* OVERRIDE */ |
| { 0x4d, 0x40 }, /* OVERRIDE */ |
| { 0x7f, 0x02 }, /* OVERRIDE */ |
| { 0x9a, 0x52 }, /* OVERRIDE */ |
| { 0x48, 0x5a }, /* OVERRIDE */ |
| { 0x76, 0x1a }, /* OVERRIDE */ |
| { 0x6a, 0x48 }, /* OVERRIDE */ |
| { 0x64, 0x28 }, /* OVERRIDE */ |
| { 0x66, 0xe6 }, /* OVERRIDE */ |
| { 0x35, 0x0e }, /* OVERRIDE */ |
| { 0x7e, 0x01 }, /* OVERRIDE */ |
| { 0x04, 0x0b }, /* OVERRIDE */ |
| { 0x68, 0xb4 }, /* OVERRIDE */ |
| { 0x36, 0x00 }, /* OVERRIDE */ |
| { 0x05, 0x01 }, /* TOP_MASTER_ENABLE */ |
| { 0, 0 } |
| }; |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static struct reg_pair_t reg_pair_rftune[] = { |
| { 0x11, 0x00 }, /* abort tune */ |
| { 0x13, 0x15 }, |
| { 0x14, 0x40 }, |
| { 0x15, 0x0e }, |
| { 0x11, 0x02 }, /* start tune */ |
| { 0, 0 } |
| }; |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| struct mxl5007t_state { |
| struct list_head hybrid_tuner_instance_list; |
| struct tuner_i2c_props i2c_props; |
| |
| struct mutex lock; |
| |
| struct mxl5007t_config *config; |
| |
| enum mxl5007t_chip_version chip_id; |
| |
| struct reg_pair_t tab_init[ARRAY_SIZE(init_tab)]; |
| struct reg_pair_t tab_init_cable[ARRAY_SIZE(init_tab_cable)]; |
| struct reg_pair_t tab_rftune[ARRAY_SIZE(reg_pair_rftune)]; |
| |
| u32 frequency; |
| u32 bandwidth; |
| }; |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| /* called by _init and _rftun to manipulate the register arrays */ |
| |
| static void set_reg_bits(struct reg_pair_t *reg_pair, u8 reg, u8 mask, u8 val) |
| { |
| unsigned int i = 0; |
| |
| while (reg_pair[i].reg || reg_pair[i].val) { |
| if (reg_pair[i].reg == reg) { |
| reg_pair[i].val &= ~mask; |
| reg_pair[i].val |= val; |
| } |
| i++; |
| |
| } |
| return; |
| } |
| |
| static void copy_reg_bits(struct reg_pair_t *reg_pair1, |
| struct reg_pair_t *reg_pair2) |
| { |
| unsigned int i, j; |
| |
| i = j = 0; |
| |
| while (reg_pair1[i].reg || reg_pair1[i].val) { |
| while (reg_pair2[j].reg || reg_pair2[j].reg) { |
| if (reg_pair1[i].reg != reg_pair2[j].reg) { |
| j++; |
| continue; |
| } |
| reg_pair2[j].val = reg_pair1[i].val; |
| break; |
| } |
| i++; |
| } |
| return; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static void mxl5007t_set_mode_bits(struct mxl5007t_state *state, |
| enum mxl5007t_mode mode, |
| s32 if_diff_out_level) |
| { |
| switch (mode) { |
| case MxL_MODE_OTA_DVBT_ATSC: |
| set_reg_bits(state->tab_init, 0x32, 0x0f, 0x06); |
| set_reg_bits(state->tab_init, 0x35, 0xff, 0x0e); |
| break; |
| case MxL_MODE_OTA_ISDBT: |
| set_reg_bits(state->tab_init, 0x32, 0x0f, 0x06); |
| set_reg_bits(state->tab_init, 0x35, 0xff, 0x12); |
| break; |
| case MxL_MODE_CABLE_DIGITAL: |
| set_reg_bits(state->tab_init_cable, 0x71, 0xff, 0x01); |
| set_reg_bits(state->tab_init_cable, 0x72, 0xff, |
| 8 - if_diff_out_level); |
| set_reg_bits(state->tab_init_cable, 0x74, 0xff, 0x17); |
| break; |
| default: |
| mxl_fail(-EINVAL); |
| } |
| return; |
| } |
| |
| static void mxl5007t_set_if_freq_bits(struct mxl5007t_state *state, |
| enum mxl5007t_if_freq if_freq, |
| int invert_if) |
| { |
| u8 val; |
| |
| switch (if_freq) { |
| case MxL_IF_4_MHZ: |
| val = 0x00; |
| break; |
| case MxL_IF_4_5_MHZ: |
| val = 0x20; |
| break; |
| case MxL_IF_4_57_MHZ: |
| val = 0x30; |
| break; |
| case MxL_IF_5_MHZ: |
| val = 0x40; |
| break; |
| case MxL_IF_5_38_MHZ: |
| val = 0x50; |
| break; |
| case MxL_IF_6_MHZ: |
| val = 0x60; |
| break; |
| case MxL_IF_6_28_MHZ: |
| val = 0x70; |
| break; |
| case MxL_IF_9_1915_MHZ: |
| val = 0x80; |
| break; |
| case MxL_IF_35_25_MHZ: |
| val = 0x90; |
| break; |
| case MxL_IF_36_15_MHZ: |
| val = 0xa0; |
| break; |
| case MxL_IF_44_MHZ: |
| val = 0xb0; |
| break; |
| default: |
| mxl_fail(-EINVAL); |
| return; |
| } |
| set_reg_bits(state->tab_init, 0x0c, 0xf0, val); |
| |
| /* set inverted IF or normal IF */ |
| set_reg_bits(state->tab_init, 0x0c, 0x08, invert_if ? 0x08 : 0x00); |
| |
| return; |
| } |
| |
| static void mxl5007t_set_xtal_freq_bits(struct mxl5007t_state *state, |
| enum mxl5007t_xtal_freq xtal_freq) |
| { |
| u8 val; |
| |
| switch (xtal_freq) { |
| case MxL_XTAL_16_MHZ: |
| val = 0x00; /* select xtal freq & Ref Freq */ |
| break; |
| case MxL_XTAL_20_MHZ: |
| val = 0x11; |
| break; |
| case MxL_XTAL_20_25_MHZ: |
| val = 0x22; |
| break; |
| case MxL_XTAL_20_48_MHZ: |
| val = 0x33; |
| break; |
| case MxL_XTAL_24_MHZ: |
| val = 0x44; |
| break; |
| case MxL_XTAL_25_MHZ: |
| val = 0x55; |
| break; |
| case MxL_XTAL_25_14_MHZ: |
| val = 0x66; |
| break; |
| case MxL_XTAL_27_MHZ: |
| val = 0x77; |
| break; |
| case MxL_XTAL_28_8_MHZ: |
| val = 0x88; |
| break; |
| case MxL_XTAL_32_MHZ: |
| val = 0x99; |
| break; |
| case MxL_XTAL_40_MHZ: |
| val = 0xaa; |
| break; |
| case MxL_XTAL_44_MHZ: |
| val = 0xbb; |
| break; |
| case MxL_XTAL_48_MHZ: |
| val = 0xcc; |
| break; |
| case MxL_XTAL_49_3811_MHZ: |
| val = 0xdd; |
| break; |
| default: |
| mxl_fail(-EINVAL); |
| return; |
| } |
| set_reg_bits(state->tab_init, 0x0b, 0xff, val); |
| |
| return; |
| } |
| |
| static struct reg_pair_t *mxl5007t_calc_init_regs(struct mxl5007t_state *state, |
| enum mxl5007t_mode mode) |
| { |
| struct mxl5007t_config *cfg = state->config; |
| |
| memcpy(&state->tab_init, &init_tab, sizeof(init_tab)); |
| memcpy(&state->tab_init_cable, &init_tab_cable, sizeof(init_tab_cable)); |
| |
| mxl5007t_set_mode_bits(state, mode, cfg->if_diff_out_level); |
| mxl5007t_set_if_freq_bits(state, cfg->if_freq_hz, cfg->invert_if); |
| mxl5007t_set_xtal_freq_bits(state, cfg->xtal_freq_hz); |
| |
| set_reg_bits(state->tab_init, 0x10, 0x40, cfg->loop_thru_enable << 6); |
| |
| set_reg_bits(state->tab_init, 0xd8, 0x08, cfg->clk_out_enable << 3); |
| |
| set_reg_bits(state->tab_init, 0x10, 0x07, cfg->clk_out_amp); |
| |
| /* set IDAC to automatic mode control by AGC */ |
| set_reg_bits(state->tab_init, 0x12, 0x80, 0x00); |
| |
| if (mode >= MxL_MODE_CABLE_DIGITAL) { |
| copy_reg_bits(state->tab_init, state->tab_init_cable); |
| return state->tab_init_cable; |
| } else |
| return state->tab_init; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| enum mxl5007t_bw_mhz { |
| MxL_BW_6MHz = 6, |
| MxL_BW_7MHz = 7, |
| MxL_BW_8MHz = 8, |
| }; |
| |
| static void mxl5007t_set_bw_bits(struct mxl5007t_state *state, |
| enum mxl5007t_bw_mhz bw) |
| { |
| u8 val; |
| |
| switch (bw) { |
| case MxL_BW_6MHz: |
| val = 0x15; /* set DIG_MODEINDEX, DIG_MODEINDEX_A, |
| * and DIG_MODEINDEX_CSF */ |
| break; |
| case MxL_BW_7MHz: |
| val = 0x21; |
| break; |
| case MxL_BW_8MHz: |
| val = 0x3f; |
| break; |
| default: |
| mxl_fail(-EINVAL); |
| return; |
| } |
| set_reg_bits(state->tab_rftune, 0x13, 0x3f, val); |
| |
| return; |
| } |
| |
| static struct |
| reg_pair_t *mxl5007t_calc_rf_tune_regs(struct mxl5007t_state *state, |
| u32 rf_freq, enum mxl5007t_bw_mhz bw) |
| { |
| u32 dig_rf_freq = 0; |
| u32 temp; |
| u32 frac_divider = 1000000; |
| unsigned int i; |
| |
| memcpy(&state->tab_rftune, ®_pair_rftune, sizeof(reg_pair_rftune)); |
| |
| mxl5007t_set_bw_bits(state, bw); |
| |
| /* Convert RF frequency into 16 bits => |
| * 10 bit integer (MHz) + 6 bit fraction */ |
| dig_rf_freq = rf_freq / MHz; |
| |
| temp = rf_freq % MHz; |
| |
| for (i = 0; i < 6; i++) { |
| dig_rf_freq <<= 1; |
| frac_divider /= 2; |
| if (temp > frac_divider) { |
| temp -= frac_divider; |
| dig_rf_freq++; |
| } |
| } |
| |
| /* add to have shift center point by 7.8124 kHz */ |
| if (temp > 7812) |
| dig_rf_freq++; |
| |
| set_reg_bits(state->tab_rftune, 0x14, 0xff, (u8)dig_rf_freq); |
| set_reg_bits(state->tab_rftune, 0x15, 0xff, (u8)(dig_rf_freq >> 8)); |
| |
| return state->tab_rftune; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_write_reg(struct mxl5007t_state *state, u8 reg, u8 val) |
| { |
| u8 buf[] = { reg, val }; |
| struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0, |
| .buf = buf, .len = 2 }; |
| int ret; |
| |
| ret = i2c_transfer(state->i2c_props.adap, &msg, 1); |
| if (ret != 1) { |
| mxl_err("failed!"); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| static int mxl5007t_write_regs(struct mxl5007t_state *state, |
| struct reg_pair_t *reg_pair) |
| { |
| unsigned int i = 0; |
| int ret = 0; |
| |
| while ((ret == 0) && (reg_pair[i].reg || reg_pair[i].val)) { |
| ret = mxl5007t_write_reg(state, |
| reg_pair[i].reg, reg_pair[i].val); |
| i++; |
| } |
| return ret; |
| } |
| |
| static int mxl5007t_read_reg(struct mxl5007t_state *state, u8 reg, u8 *val) |
| { |
| struct i2c_msg msg[] = { |
| { .addr = state->i2c_props.addr, .flags = 0, |
| .buf = ®, .len = 1 }, |
| { .addr = state->i2c_props.addr, .flags = I2C_M_RD, |
| .buf = val, .len = 1 }, |
| }; |
| int ret; |
| |
| ret = i2c_transfer(state->i2c_props.adap, msg, 2); |
| if (ret != 2) { |
| mxl_err("failed!"); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| static int mxl5007t_soft_reset(struct mxl5007t_state *state) |
| { |
| u8 d = 0xff; |
| struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0, |
| .buf = &d, .len = 1 }; |
| |
| int ret = i2c_transfer(state->i2c_props.adap, &msg, 1); |
| |
| if (ret != 1) { |
| mxl_err("failed!"); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| static int mxl5007t_tuner_init(struct mxl5007t_state *state, |
| enum mxl5007t_mode mode) |
| { |
| struct reg_pair_t *init_regs; |
| int ret; |
| |
| ret = mxl5007t_soft_reset(state); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| /* calculate initialization reg array */ |
| init_regs = mxl5007t_calc_init_regs(state, mode); |
| |
| ret = mxl5007t_write_regs(state, init_regs); |
| if (mxl_fail(ret)) |
| goto fail; |
| mdelay(1); |
| |
| ret = mxl5007t_write_reg(state, 0x2c, 0x35); |
| mxl_fail(ret); |
| fail: |
| return ret; |
| } |
| |
| static int mxl5007t_tuner_rf_tune(struct mxl5007t_state *state, u32 rf_freq_hz, |
| enum mxl5007t_bw_mhz bw) |
| { |
| struct reg_pair_t *rf_tune_regs; |
| int ret; |
| |
| /* calculate channel change reg array */ |
| rf_tune_regs = mxl5007t_calc_rf_tune_regs(state, rf_freq_hz, bw); |
| |
| ret = mxl5007t_write_regs(state, rf_tune_regs); |
| if (mxl_fail(ret)) |
| goto fail; |
| msleep(3); |
| fail: |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_synth_lock_status(struct mxl5007t_state *state, |
| int *rf_locked, int *ref_locked) |
| { |
| u8 d; |
| int ret; |
| |
| *rf_locked = 0; |
| *ref_locked = 0; |
| |
| ret = mxl5007t_read_reg(state, 0xcf, &d); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| if ((d & 0x0c) == 0x0c) |
| *rf_locked = 1; |
| |
| if ((d & 0x03) == 0x03) |
| *ref_locked = 1; |
| fail: |
| return ret; |
| } |
| |
| static int mxl5007t_check_rf_input_power(struct mxl5007t_state *state, |
| s32 *rf_input_level) |
| { |
| u8 d1, d2; |
| int ret; |
| |
| ret = mxl5007t_read_reg(state, 0xb7, &d1); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| ret = mxl5007t_read_reg(state, 0xbf, &d2); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| d2 = d2 >> 4; |
| if (d2 > 7) |
| d2 += 0xf0; |
| |
| *rf_input_level = (s32)(d1 + d2 - 113); |
| fail: |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| int rf_locked, ref_locked; |
| s32 rf_input_level = 0; |
| int ret; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| |
| ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked); |
| if (mxl_fail(ret)) |
| goto fail; |
| mxl_debug("%s%s", rf_locked ? "rf locked " : "", |
| ref_locked ? "ref locked" : ""); |
| |
| ret = mxl5007t_check_rf_input_power(state, &rf_input_level); |
| if (mxl_fail(ret)) |
| goto fail; |
| mxl_debug("rf input power: %d", rf_input_level); |
| fail: |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_set_params(struct dvb_frontend *fe, |
| struct dvb_frontend_parameters *params) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| enum mxl5007t_bw_mhz bw; |
| enum mxl5007t_mode mode; |
| int ret; |
| u32 freq = params->frequency; |
| |
| if (fe->ops.info.type == FE_ATSC) { |
| switch (params->u.vsb.modulation) { |
| case VSB_8: |
| case VSB_16: |
| mode = MxL_MODE_OTA_DVBT_ATSC; |
| break; |
| case QAM_64: |
| case QAM_256: |
| mode = MxL_MODE_CABLE_DIGITAL; |
| break; |
| default: |
| mxl_err("modulation not set!"); |
| return -EINVAL; |
| } |
| bw = MxL_BW_6MHz; |
| } else if (fe->ops.info.type == FE_OFDM) { |
| switch (params->u.ofdm.bandwidth) { |
| case BANDWIDTH_6_MHZ: |
| bw = MxL_BW_6MHz; |
| break; |
| case BANDWIDTH_7_MHZ: |
| bw = MxL_BW_7MHz; |
| break; |
| case BANDWIDTH_8_MHZ: |
| bw = MxL_BW_8MHz; |
| break; |
| default: |
| mxl_err("bandwidth not set!"); |
| return -EINVAL; |
| } |
| mode = MxL_MODE_OTA_DVBT_ATSC; |
| } else { |
| mxl_err("modulation type not supported!"); |
| return -EINVAL; |
| } |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| |
| mutex_lock(&state->lock); |
| |
| ret = mxl5007t_tuner_init(state, mode); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| ret = mxl5007t_tuner_rf_tune(state, freq, bw); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| state->frequency = freq; |
| state->bandwidth = (fe->ops.info.type == FE_OFDM) ? |
| params->u.ofdm.bandwidth : 0; |
| fail: |
| mutex_unlock(&state->lock); |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_init(struct dvb_frontend *fe) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| int ret; |
| u8 d; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| |
| ret = mxl5007t_read_reg(state, 0x05, &d); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| ret = mxl5007t_write_reg(state, 0x05, d | 0x01); |
| mxl_fail(ret); |
| fail: |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| |
| return ret; |
| } |
| |
| static int mxl5007t_sleep(struct dvb_frontend *fe) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| int ret; |
| u8 d; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| |
| ret = mxl5007t_read_reg(state, 0x05, &d); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| ret = mxl5007t_write_reg(state, 0x05, d & ~0x01); |
| mxl_fail(ret); |
| fail: |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static int mxl5007t_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| *frequency = state->frequency; |
| return 0; |
| } |
| |
| static int mxl5007t_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| *bandwidth = state->bandwidth; |
| return 0; |
| } |
| |
| static int mxl5007t_release(struct dvb_frontend *fe) |
| { |
| struct mxl5007t_state *state = fe->tuner_priv; |
| |
| mutex_lock(&mxl5007t_list_mutex); |
| |
| if (state) |
| hybrid_tuner_release_state(state); |
| |
| mutex_unlock(&mxl5007t_list_mutex); |
| |
| fe->tuner_priv = NULL; |
| |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| static struct dvb_tuner_ops mxl5007t_tuner_ops = { |
| .info = { |
| .name = "MaxLinear MxL5007T", |
| }, |
| .init = mxl5007t_init, |
| .sleep = mxl5007t_sleep, |
| .set_params = mxl5007t_set_params, |
| .get_status = mxl5007t_get_status, |
| .get_frequency = mxl5007t_get_frequency, |
| .get_bandwidth = mxl5007t_get_bandwidth, |
| .release = mxl5007t_release, |
| }; |
| |
| static int mxl5007t_get_chip_id(struct mxl5007t_state *state) |
| { |
| char *name; |
| int ret; |
| u8 id; |
| |
| ret = mxl5007t_read_reg(state, 0xd3, &id); |
| if (mxl_fail(ret)) |
| goto fail; |
| |
| switch (id) { |
| case MxL_5007_V1_F1: |
| name = "MxL5007.v1.f1"; |
| break; |
| case MxL_5007_V1_F2: |
| name = "MxL5007.v1.f2"; |
| break; |
| case MxL_5007_V2_100_F1: |
| name = "MxL5007.v2.100.f1"; |
| break; |
| case MxL_5007_V2_100_F2: |
| name = "MxL5007.v2.100.f2"; |
| break; |
| case MxL_5007_V2_200_F1: |
| name = "MxL5007.v2.200.f1"; |
| break; |
| case MxL_5007_V2_200_F2: |
| name = "MxL5007.v2.200.f2"; |
| break; |
| default: |
| name = "MxL5007T"; |
| id = MxL_UNKNOWN_ID; |
| } |
| state->chip_id = id; |
| mxl_info("%s detected @ %d-%04x", name, |
| i2c_adapter_id(state->i2c_props.adap), |
| state->i2c_props.addr); |
| return 0; |
| fail: |
| mxl_warn("unable to identify device @ %d-%04x", |
| i2c_adapter_id(state->i2c_props.adap), |
| state->i2c_props.addr); |
| |
| state->chip_id = MxL_UNKNOWN_ID; |
| return ret; |
| } |
| |
| struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe, |
| struct i2c_adapter *i2c, u8 addr, |
| struct mxl5007t_config *cfg) |
| { |
| struct mxl5007t_state *state = NULL; |
| int instance, ret; |
| |
| mutex_lock(&mxl5007t_list_mutex); |
| instance = hybrid_tuner_request_state(struct mxl5007t_state, state, |
| hybrid_tuner_instance_list, |
| i2c, addr, "mxl5007"); |
| switch (instance) { |
| case 0: |
| goto fail; |
| case 1: |
| /* new tuner instance */ |
| state->config = cfg; |
| |
| mutex_init(&state->lock); |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| |
| ret = mxl5007t_get_chip_id(state); |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| |
| /* check return value of mxl5007t_get_chip_id */ |
| if (mxl_fail(ret)) |
| goto fail; |
| break; |
| default: |
| /* existing tuner instance */ |
| break; |
| } |
| fe->tuner_priv = state; |
| mutex_unlock(&mxl5007t_list_mutex); |
| |
| memcpy(&fe->ops.tuner_ops, &mxl5007t_tuner_ops, |
| sizeof(struct dvb_tuner_ops)); |
| |
| return fe; |
| fail: |
| mutex_unlock(&mxl5007t_list_mutex); |
| |
| mxl5007t_release(fe); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(mxl5007t_attach); |
| MODULE_DESCRIPTION("MaxLinear MxL5007T Silicon IC tuner driver"); |
| MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION("0.1"); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |