From patchwork Sun May 6 21:22:30 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konstantin Dimitrov X-Patchwork-Id: 13629 Return-path: Envelope-to: mchehab@canuck.infradead.org Delivery-date: Sun, 06 May 2012 21:22:36 +0000 Received: from canuck.infradead.org [134.117.69.58] by localhost.localdomain with IMAP (fetchmail-6.3.21) for (single-drop); Mon, 07 May 2012 06:58:11 -0300 (BRT) Received: from casper.infradead.org ([2001:770:15f::2]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SR8uZ-0006Us-Vu for mchehab@canuck.infradead.org; Sun, 06 May 2012 21:22:36 +0000 Received: from vger.kernel.org ([209.132.180.67]) by casper.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1SR8uY-0007Jt-9S; Sun, 06 May 2012 21:22:34 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754715Ab2EFVWc (ORCPT + 1 other); Sun, 6 May 2012 17:22:32 -0400 Received: from mail-ey0-f174.google.com ([209.85.215.174]:50107 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754679Ab2EFVWb (ORCPT ); Sun, 6 May 2012 17:22:31 -0400 Received: by eaaq12 with SMTP id q12so1231390eaa.19 for ; Sun, 06 May 2012 14:22:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=i+//t4sJNQDlYLl8ems6aKx19yL4SPE7UAaFwFWrlBU=; b=Ukxq2GfU0TqRbCjxx5b4G9rPQRXK3YJqAjPSoGQsYKn1bGFm5M7WhO+w8ScCYnhngx DO8mNm5YHBYcuP203jcZNFHE6J4yqEEmS4+OelFUK22VocldV1jPAd1MJvZ53j3pasVd rG3WIqEPFK/re4/6YEpkupfDyL8dMgQVoeKvljNzJzZPbTlwYn/fjf1u+lNH6u3ZWmhJ TRInT5ywNl8Ht8PUD2uXoe/PRAJilYKUG0XtbW07cLCcduThefx+JFYZuGkhrLhbbpeO mznXHigCXIZo6fDvbVZ/9UTjfMnAgWuMVgXI/6o8PGlEacaeqSoDtWhOlPFv/WCijYze wuww== MIME-Version: 1.0 Received: by 10.213.36.16 with SMTP id r16mr2210165ebd.99.1336339350299; Sun, 06 May 2012 14:22:30 -0700 (PDT) Received: by 10.213.3.136 with HTTP; Sun, 6 May 2012 14:22:30 -0700 (PDT) Date: Mon, 7 May 2012 00:22:30 +0300 Message-ID: Subject: [PATCH 2/3] ts2020: add ts2020 tuner driver From: Konstantin Dimitrov To: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org add separate ts2020 tuner driver Signed-off-by: Konstantin Dimitrov To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- a/linux/drivers/media/dvb/frontends/Kconfig 2012-04-20 06:45:55.000000000 +0300 +++ b/linux/drivers/media/dvb/frontends/Kconfig 2012-05-07 00:58:26.888543350 +0300 @@ -221,6 +221,13 @@ help A DVB-S tuner module. Say Y when you want to support this frontend. +config DVB_TS2020 + tristate "Montage Tehnology TS2020 based tuners" + depends on DVB_CORE && I2C + default m if DVB_FE_CUSTOMISE + help + A DVB-S/S2 silicon tuner. Say Y when you want to support this tuner. + config DVB_DS3000 tristate "Montage Tehnology DS3000 based" depends on DVB_CORE && I2C --- a/linux/drivers/media/dvb/frontends/Makefile 2012-04-20 06:45:55.000000000 +0300 +++ b/linux/drivers/media/dvb/frontends/Makefile 2012-05-07 00:54:44.624546145 +0300 @@ -87,6 +87,7 @@ obj-$(CONFIG_DVB_EC100) += ec100.o obj-$(CONFIG_DVB_HD29L2) += hd29l2.o obj-$(CONFIG_DVB_DS3000) += ds3000.o +obj-$(CONFIG_DVB_TS2020) += ts2020.o obj-$(CONFIG_DVB_MB86A16) += mb86a16.o obj-$(CONFIG_DVB_MB86A20S) += mb86a20s.o obj-$(CONFIG_DVB_IX2505V) += ix2505v.o --- a/linux/drivers/media/dvb/frontends/ts2020.h 2012-05-07 01:36:49.876514403 +0300 +++ b/linux/drivers/media/dvb/frontends/ts2020.h 2012-05-07 01:12:54.148532449 +0300 @@ -0,0 +1,68 @@ +/* + Montage Technology TS2020 - Silicon Tuner driver + Copyright (C) 2009-2012 Konstantin Dimitrov + + Copyright (C) 2009-2012 TurboSight.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. + */ + +#ifndef TS2020_H +#define TS2020_H + +#include + +struct ts2020_config { + u8 tuner_address; +}; + +struct ts2020_state { + struct i2c_adapter *i2c; + const struct ts2020_config *config; + struct dvb_frontend *frontend; + int status; +}; + +#if defined(CONFIG_DVB_TS2020) || \ + (defined(CONFIG_DVB_TS2020_MODULE) && defined(MODULE)) + +extern struct dvb_frontend *ts2020_attach( + struct dvb_frontend *fe, + const struct ts2020_config *config, + struct i2c_adapter *i2c); + +extern int ts2020_get_signal_strength( + struct dvb_frontend *fe, + u16 *strength); +#else +static inline struct dvb_frontend *ts2020_attach( + struct dvb_frontend *fe, + const struct ts2020_config *config, + struct i2c_adapter *i2c) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} + +static inline int ts2020_get_signal_strength( + struct dvb_frontend *fe, + u16 *strength) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif + +#endif /* TS2020_H */ --- a/linux/drivers/media/dvb/frontends/ts2020_cfg.h 2012-05-07 01:36:59.836514279 +0300 +++ b/linux/drivers/media/dvb/frontends/ts2020_cfg.h 2012-05-07 01:12:56.248532422 +0300 @@ -0,0 +1,64 @@ +/* + Montage Technology TS2020 - Silicon Tuner driver + Copyright (C) 2009-2012 Konstantin Dimitrov + + Copyright (C) 2009-2012 TurboSight.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. + */ + +static int ts2020_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct dvb_frontend_ops *frontend_ops = NULL; + struct dvb_tuner_ops *tuner_ops = NULL; + struct tuner_state t_state; + int ret = 0; + + if (&fe->ops) + frontend_ops = &fe->ops; + if (&frontend_ops->tuner_ops) + tuner_ops = &frontend_ops->tuner_ops; + if (tuner_ops->get_state) { + ret = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &t_state); + if (ret < 0) { + printk(KERN_ERR "%s: Invalid parameter\n", __func__); + return ret; + } + *frequency = t_state.frequency; + } + return 0; +} + +static int ts2020_set_frequency(struct dvb_frontend *fe, u32 frequency) +{ + struct dvb_frontend_ops *frontend_ops = NULL; + struct dvb_tuner_ops *tuner_ops = NULL; + struct tuner_state t_state; + int ret = 0; + + t_state.frequency = frequency; + if (&fe->ops) + frontend_ops = &fe->ops; + if (&frontend_ops->tuner_ops) + tuner_ops = &frontend_ops->tuner_ops; + if (tuner_ops->set_state) { + ret = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &t_state); + if (ret < 0) { + printk(KERN_ERR "%s: Invalid parameter\n", __func__); + return ret; + } + } + return 0; +} --- a/linux/drivers/media/dvb/frontends/ts2020.c 2012-05-07 01:36:51.428514382 +0300 +++ b/linux/drivers/media/dvb/frontends/ts2020.c 2012-05-07 01:27:55.832521116 +0300 @@ -0,0 +1,369 @@ +/* + Montage Technology TS2020 - Silicon Tuner driver + Copyright (C) 2009-2012 Konstantin Dimitrov + + Copyright (C) 2009-2012 TurboSight.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 "dvb_frontend.h" +#include "ts2020.h" + +#define TS2020_XTAL_FREQ 27000 /* in kHz */ + +static int ts2020_readreg(struct dvb_frontend *fe, u8 reg) +{ + struct ts2020_state *state = fe->tuner_priv; + + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + struct i2c_msg msg[] = { + { + .addr = state->config->tuner_address, + .flags = 0, + .buf = b0, + .len = 1 + }, { + .addr = state->config->tuner_address, + .flags = I2C_M_RD, + .buf = b1, + .len = 1 + } + }; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + ret = i2c_transfer(state->i2c, msg, 2); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + if (ret != 2) { + printk(KERN_ERR "%s: reg=0x%x(error=%d)\n", __func__, reg, ret); + return ret; + } + + return b1[0]; +} + +static int ts2020_writereg(struct dvb_frontend *fe, int reg, int data) +{ + struct ts2020_state *state = fe->tuner_priv; + + u8 buf[] = { reg, data }; + struct i2c_msg msg = { .addr = state->config->tuner_address, + .flags = 0, .buf = buf, .len = 2 }; + int err; + + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + err = i2c_transfer(state->i2c, &msg, 1); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + if (err != 1) { + printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x," + " value == 0x%02x)\n", __func__, err, reg, data); + return -EREMOTEIO; + } + + return 0; +} + +static int ts2020_get_status(struct dvb_frontend *fe, u32 *status) +{ + return TUNER_STATUS_LOCKED; +} + +static int ts2020_init(struct dvb_frontend *fe) +{ + return 0; +} + +static int ts2020_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + u16 ndiv, div4; + + div4 = (ts2020_readreg(fe, 0x10) & 0x10) >> 4; + + ndiv = ts2020_readreg(fe, 0x01); + ndiv &= 0x0f; + ndiv <<= 8; + ndiv |= ts2020_readreg(fe, 0x02); + + /* actual tuned frequency, i.e. including the offset */ + *frequency = (ndiv - ndiv % 2 + 1024) * TS2020_XTAL_FREQ + / (6 + 8) / (div4 + 1) / 2; + + return 0; +} + +static int ts2020_set_frequency(struct dvb_frontend *fe, u32 frequency) +{ + struct ts2020_state *state = fe->tuner_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + + u8 mlpf, mlpf_new, mlpf_max, mlpf_min, nlpf, div4; + u16 value, ndiv; + u32 srate = 0, f3db; + + if (state->status == 0) { + /* TS2020 init */ + ts2020_writereg(fe, 0x42, 0x73); + ts2020_writereg(fe, 0x05, 0x01); + ts2020_writereg(fe, 0x62, 0xf5); + + state->status = 1; + } + + /* unknown */ + ts2020_writereg(fe, 0x07, 0x02); + ts2020_writereg(fe, 0x10, 0x00); + ts2020_writereg(fe, 0x60, 0x79); + ts2020_writereg(fe, 0x08, 0x01); + ts2020_writereg(fe, 0x00, 0x01); + div4 = 0; + + /* calculate and set freq divider */ + if (frequency < 1146000) { + ts2020_writereg(fe, 0x10, 0x11); + div4 = 1; + ndiv = ((frequency * (6 + 8) * 4) + + (TS2020_XTAL_FREQ / 2)) / + TS2020_XTAL_FREQ - 1024; + } else { + ts2020_writereg(fe, 0x10, 0x01); + ndiv = ((frequency * (6 + 8) * 2) + + (TS2020_XTAL_FREQ / 2)) / + TS2020_XTAL_FREQ - 1024; + } + + ts2020_writereg(fe, 0x01, (ndiv & 0x0f00) >> 8); + ts2020_writereg(fe, 0x02, ndiv & 0x00ff); + + /* set pll */ + ts2020_writereg(fe, 0x03, 0x06); + ts2020_writereg(fe, 0x51, 0x0f); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x10); + ts2020_writereg(fe, 0x50, 0x00); + msleep(5); + + /* unknown */ + ts2020_writereg(fe, 0x51, 0x17); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x08); + ts2020_writereg(fe, 0x50, 0x00); + msleep(5); + + value = ts2020_readreg(fe, 0x3d); + value &= 0x0f; + if ((value > 4) && (value < 15)) { + value -= 3; + if (value < 4) + value = 4; + value = ((value << 3) | 0x01) & 0x79; + } + + ts2020_writereg(fe, 0x60, value); + ts2020_writereg(fe, 0x51, 0x17); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x08); + ts2020_writereg(fe, 0x50, 0x00); + + /* set low-pass filter period */ + ts2020_writereg(fe, 0x04, 0x2e); + ts2020_writereg(fe, 0x51, 0x1b); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x04); + ts2020_writereg(fe, 0x50, 0x00); + msleep(5); + + /* get current symbol rate */ + if (fe->ops.get_frontend) + fe->ops.get_frontend(fe); + srate = p->symbol_rate / 1000; + + f3db = (srate << 2) / 5 + 2000; + if (srate < 5000) + f3db += 3000; + if (f3db < 7000) + f3db = 7000; + if (f3db > 40000) + f3db = 40000; + + /* set low-pass filter baseband */ + value = ts2020_readreg(fe, 0x26); + mlpf = 0x2e * 207 / ((value << 1) + 151); + mlpf_max = mlpf * 135 / 100; + mlpf_min = mlpf * 78 / 100; + if (mlpf_max > 63) + mlpf_max = 63; + + /* rounded to the closest integer */ + nlpf = ((mlpf * f3db * 1000) + (2766 * TS2020_XTAL_FREQ / 2)) + / (2766 * TS2020_XTAL_FREQ); + if (nlpf > 23) + nlpf = 23; + if (nlpf < 1) + nlpf = 1; + + /* rounded to the closest integer */ + mlpf_new = ((TS2020_XTAL_FREQ * nlpf * 2766) + + (1000 * f3db / 2)) / (1000 * f3db); + + if (mlpf_new < mlpf_min) { + nlpf++; + mlpf_new = ((TS2020_XTAL_FREQ * nlpf * 2766) + + (1000 * f3db / 2)) / (1000 * f3db); + } + + if (mlpf_new > mlpf_max) + mlpf_new = mlpf_max; + + ts2020_writereg(fe, 0x04, mlpf_new); + ts2020_writereg(fe, 0x06, nlpf); + ts2020_writereg(fe, 0x51, 0x1b); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x04); + ts2020_writereg(fe, 0x50, 0x00); + msleep(5); + + /* unknown */ + ts2020_writereg(fe, 0x51, 0x1e); + ts2020_writereg(fe, 0x51, 0x1f); + ts2020_writereg(fe, 0x50, 0x01); + ts2020_writereg(fe, 0x50, 0x00); + msleep(60); + + return 0; +} + +static int ts2020_sleep(struct dvb_frontend *fe) +{ + /* TODO: power down */ + return 0; +} + +static int ts2020_release(struct dvb_frontend *fe) +{ + struct ts2020_state *state = fe->tuner_priv; + + fe->tuner_priv = NULL; + kfree(state); + + return 0; +} + +static int ts2020_get_state(struct dvb_frontend *fe, + enum tuner_param param, struct tuner_state *state) +{ + switch (param) { + case DVBFE_TUNER_FREQUENCY: + ts2020_get_frequency(fe, &state->frequency); + break; + default: + break; + } + + return 0; +} + +static int ts2020_set_state(struct dvb_frontend *fe, + enum tuner_param param, struct tuner_state *state) +{ + switch (param) { + case DVBFE_TUNER_FREQUENCY: + ts2020_set_frequency(fe, state->frequency); + break; + default: + return -EINVAL; + break; + } + + return 0; +} + +static struct dvb_tuner_ops ts2020_ops = { + .info = { + .name = "Montage Technology TS2020 Silicon Tuner", + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_step = 0, + }, + + .init = ts2020_init, + .sleep = ts2020_sleep, + .get_status = ts2020_get_status, + .get_state = ts2020_get_state, + .set_state = ts2020_set_state, + .release = ts2020_release +}; + +int ts2020_get_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + u16 sig_reading, sig_strength; + u8 rfgain, bbgain; + + rfgain = ts2020_readreg(fe, 0x3d) & 0x1f; + bbgain = ts2020_readreg(fe, 0x21) & 0x1f; + + if (rfgain > 15) + rfgain = 15; + if (bbgain > 13) + bbgain = 13; + + sig_reading = rfgain * 2 + bbgain * 3; + + sig_strength = 40 + (64 - sig_reading) * 50 / 64 ; + + /* cook the value to be suitable for szap-s2 human readable output */ + *signal_strength = sig_strength * 1000; + + return 0; +} +EXPORT_SYMBOL(ts2020_get_signal_strength); + +struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe, + const struct ts2020_config *config, struct i2c_adapter *i2c) +{ + struct ts2020_state *state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct ts2020_state), GFP_KERNEL); + if (!state) + return NULL; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + state->frontend = fe; + fe->tuner_priv = state; + fe->ops.tuner_ops = ts2020_ops; + + return fe; +} +EXPORT_SYMBOL(ts2020_attach); + +MODULE_AUTHOR("Konstantin Dimitrov "); +MODULE_DESCRIPTION("Montage Technology TS2020 - Silicon tuner driver module"); +MODULE_LICENSE("GPL"); --