Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 1 | /* |
| 2 | * lgh06xf.c - ATSC Tuner support for LG TDVS-H06xF |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | #include "dvb-pll.h" |
| 20 | #include "lgh06xf.h" |
| 21 | |
| 22 | #define LG_H06XF_PLL_I2C_ADDR 0x61 |
| 23 | |
| 24 | struct lgh06xf_priv { |
| 25 | struct i2c_adapter *i2c; |
| 26 | u32 frequency; |
| 27 | }; |
| 28 | |
| 29 | static int lgh06xf_release(struct dvb_frontend *fe) |
| 30 | { |
| 31 | kfree(fe->tuner_priv); |
| 32 | fe->tuner_priv = NULL; |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | static int lgh06xf_set_params(struct dvb_frontend* fe, |
| 37 | struct dvb_frontend_parameters* params) |
| 38 | { |
| 39 | struct lgh06xf_priv *priv = fe->tuner_priv; |
| 40 | u8 buf[4]; |
| 41 | struct i2c_msg msg = { .addr = LG_H06XF_PLL_I2C_ADDR, .flags = 0, |
| 42 | .buf = buf, .len = sizeof(buf) }; |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 43 | u32 frequency; |
| 44 | int result; |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 45 | |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 46 | if ((result = dvb_pll_configure(&dvb_pll_lg_tdvs_h06xf, buf, |
| 47 | params->frequency, 0)) < 0) |
| 48 | return result; |
| 49 | else |
| 50 | frequency = result; |
| 51 | |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 52 | if (fe->ops.i2c_gate_ctrl) |
| 53 | fe->ops.i2c_gate_ctrl(fe, 1); |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 54 | if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) { |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 55 | printk(KERN_WARNING "lgh06xf: %s error " |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 56 | "(addr %02x <- %02x, result = %i)\n", |
| 57 | __FUNCTION__, buf[0], buf[1], result); |
| 58 | if (result < 0) |
| 59 | return result; |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 60 | else |
| 61 | return -EREMOTEIO; |
| 62 | } |
| 63 | |
| 64 | /* Set the Auxiliary Byte. */ |
| 65 | buf[0] = buf[2]; |
| 66 | buf[0] &= ~0x20; |
| 67 | buf[0] |= 0x18; |
| 68 | buf[1] = 0x50; |
| 69 | msg.len = 2; |
| 70 | if (fe->ops.i2c_gate_ctrl) |
| 71 | fe->ops.i2c_gate_ctrl(fe, 1); |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 72 | if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) { |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 73 | printk(KERN_WARNING "lgh06xf: %s error " |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 74 | "(addr %02x <- %02x, result = %i)\n", |
| 75 | __FUNCTION__, buf[0], buf[1], result); |
| 76 | if (result < 0) |
| 77 | return result; |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 78 | else |
| 79 | return -EREMOTEIO; |
| 80 | } |
| 81 | |
Michael Krufky | fd83e24 | 2006-11-20 17:03:48 -0300 | [diff] [blame] | 82 | priv->frequency = frequency; |
Michael Krufky | 76db93d | 2006-11-19 19:45:26 -0300 | [diff] [blame] | 83 | |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | static int lgh06xf_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| 88 | { |
| 89 | struct lgh06xf_priv *priv = fe->tuner_priv; |
| 90 | *frequency = priv->frequency; |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | static struct dvb_tuner_ops lgh06xf_tuner_ops = { |
| 95 | .release = lgh06xf_release, |
| 96 | .set_params = lgh06xf_set_params, |
| 97 | .get_frequency = lgh06xf_get_frequency, |
| 98 | }; |
| 99 | |
| 100 | struct dvb_frontend* lgh06xf_attach(struct dvb_frontend *fe, |
| 101 | struct i2c_adapter *i2c) |
| 102 | { |
| 103 | struct lgh06xf_priv *priv = NULL; |
| 104 | |
| 105 | priv = kzalloc(sizeof(struct lgh06xf_priv), GFP_KERNEL); |
| 106 | if (priv == NULL) |
| 107 | return NULL; |
| 108 | |
| 109 | priv->i2c = i2c; |
| 110 | |
| 111 | memcpy(&fe->ops.tuner_ops, &lgh06xf_tuner_ops, |
| 112 | sizeof(struct dvb_tuner_ops)); |
| 113 | |
| 114 | strlcpy(fe->ops.tuner_ops.info.name, dvb_pll_lg_tdvs_h06xf.name, |
| 115 | sizeof(fe->ops.tuner_ops.info.name)); |
| 116 | |
| 117 | fe->ops.tuner_ops.info.frequency_min = dvb_pll_lg_tdvs_h06xf.min; |
| 118 | fe->ops.tuner_ops.info.frequency_max = dvb_pll_lg_tdvs_h06xf.max; |
| 119 | |
| 120 | fe->tuner_priv = priv; |
| 121 | return fe; |
| 122 | } |
| 123 | |
| 124 | EXPORT_SYMBOL(lgh06xf_attach); |
| 125 | |
| 126 | MODULE_DESCRIPTION("LG TDVS-H06xF ATSC Tuner support"); |
| 127 | MODULE_AUTHOR("Michael Krufky"); |
| 128 | MODULE_LICENSE("GPL"); |
| 129 | |
| 130 | /* |
| 131 | * Local variables: |
| 132 | * c-basic-offset: 8 |
| 133 | * End: |
| 134 | */ |