From patchwork Tue Mar 27 15:15:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiro TSUKADA X-Patchwork-Id: 48209 Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from ) id 1f0qLc-00038K-2t; Tue, 27 Mar 2018 15:17:16 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752183AbeC0PRN (ORCPT + 1 other); Tue, 27 Mar 2018 11:17:13 -0400 Received: from mail-pf0-f195.google.com ([209.85.192.195]:46966 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752046AbeC0PRM (ORCPT ); Tue, 27 Mar 2018 11:17:12 -0400 Received: by mail-pf0-f195.google.com with SMTP id h69so3698955pfe.13 for ; Tue, 27 Mar 2018 08:17:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=PA7Qbb/TW2evvdNtRvCRo4duKCNi+A3G9EafCm0Eacg=; b=gyNBJKZUHPCYoTBuAgF03oE/o/6yQlkX9XB4dNAAxBDsvwocJXxVyIX701j26JNPiW iWOgkf2TDKVtpI7oNNVs8yXfKpxhr48osg+Yh7pnFIDZ8L2BJwKjSX+GRnik/FwN9I2F SeZ6ApSbEn76ZXeYfK43iO+hFzeulYDIiZGNzO9hOuKxGgIhUvP2zS3vbRjH9bcwlo72 FAt5+hONM2Tim2ZgMn1D6psk2F56R+PQQV/CkLAEw7+JT6gbJAb7ZK0MUN0kWg6C6VfP lirwY3+0QKZVJtRozLCSv5n2ywBZfePs84jvZ1vQXNiT9WiuwDaUTmAEwiOMeduZtP33 jRRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=PA7Qbb/TW2evvdNtRvCRo4duKCNi+A3G9EafCm0Eacg=; b=f1iU0+Xv4PZro2+utSBElwKBY6truMlgfF57G51opUWpyqnQ2V4nHJ0QgR6Mt4Hxnx INaPsDj6C0vgsR7/qkq2tCid9Tm57WHKtUC/+aoOcSsCzp75z6mH3NHXRPmr0yBUto/R TI8F4nfXrtIlyjyV6x0hT5sv3xbqN950Soy86SahICFfEfOVOmiaBioqPfx75QeMBj0s M2YXqEtUkcWoAaESWYCklXgdt5DNKNeoMWPL6V9ollzP7V27jpfzoePqGaoCJEJ4KES8 NXFyZ4V/FgaP0+px1y1WIoUc4zo0/MFt6B/6vzjF/zPWkDpiK7xkeGtPZpfFZeUkmwnp khaw== X-Gm-Message-State: AElRT7Gof4GieKKm9pEyMoLcPIN3qLuVjqEJ/LT9oKdjn2ENKhVc+I/b Wz8kyvKjPynvOYsNyOq85srkYg== X-Google-Smtp-Source: AG47ELuoa81H9+BTQOScw3SodPC6AygpUAlQqNMR34BCtU//fSAkNKwMS66QOpGhMapgV2Ti/MMemQ== X-Received: by 10.98.135.202 with SMTP id i193mr21551226pfe.189.1522163831535; Tue, 27 Mar 2018 08:17:11 -0700 (PDT) Received: from localhost.localdomain (softbank219203027033.bbtec.net. [219.203.27.33]) by smtp.googlemail.com with ESMTPSA id c15sm3957419pfm.114.2018.03.27.08.17.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Mar 2018 08:17:11 -0700 (PDT) From: tskd08@gmail.com To: linux-media@vger.kernel.org Cc: mchehab@s-opensource.com, hiranotaka@zng.info, Akihiro Tsukada Subject: [PATCH 2/5] tuners: add new driver for Sharp qm1d1b0004 ISDB-S tuner Date: Wed, 28 Mar 2018 00:15:59 +0900 Message-Id: <20180327151602.12250-3-tskd08@gmail.com> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180327151602.12250-1-tskd08@gmail.com> References: <20180327151602.12250-1-tskd08@gmail.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Akihiro Tsukada The tuner is used in Earthsoft PT1/PT2 DVB boards, and the driver was extraced from (the former) va1j5jf8007s.c of PT1. it might contain PT1 specific configs. Signed-off-by: Akihiro Tsukada --- drivers/media/tuners/Kconfig | 7 + drivers/media/tuners/Makefile | 1 + drivers/media/tuners/qm1d1b0004.c | 264 ++++++++++++++++++++++++++++++++++++++ drivers/media/tuners/qm1d1b0004.h | 24 ++++ 4 files changed, 296 insertions(+) create mode 100644 drivers/media/tuners/qm1d1b0004.c create mode 100644 drivers/media/tuners/qm1d1b0004.h diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig index 6687514df97..147f3cd0bb9 100644 --- a/drivers/media/tuners/Kconfig +++ b/drivers/media/tuners/Kconfig @@ -284,4 +284,11 @@ config MEDIA_TUNER_QM1D1C0042 default m if !MEDIA_SUBDRV_AUTOSELECT help Sharp QM1D1C0042 trellis coded 8PSK tuner driver. + +config MEDIA_TUNER_QM1D1B0004 + tristate "Sharp QM1D1B0004 tuner" + depends on MEDIA_SUPPORT && I2C + default m if !MEDIA_SUBDRV_AUTOSELECT + help + Sharp QM1D1B0004 ISDB-S tuner driver. endmenu diff --git a/drivers/media/tuners/Makefile b/drivers/media/tuners/Makefile index 0ff21f1c7ee..7b4f8423501 100644 --- a/drivers/media/tuners/Makefile +++ b/drivers/media/tuners/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_MEDIA_TUNER_IT913X) += it913x.o obj-$(CONFIG_MEDIA_TUNER_R820T) += r820t.o obj-$(CONFIG_MEDIA_TUNER_MXL301RF) += mxl301rf.o obj-$(CONFIG_MEDIA_TUNER_QM1D1C0042) += qm1d1c0042.o +obj-$(CONFIG_MEDIA_TUNER_QM1D1B0004) += qm1d1b0004.o obj-$(CONFIG_MEDIA_TUNER_M88RS6000T) += m88rs6000t.o obj-$(CONFIG_MEDIA_TUNER_TDA18250) += tda18250.o diff --git a/drivers/media/tuners/qm1d1b0004.c b/drivers/media/tuners/qm1d1b0004.c new file mode 100644 index 00000000000..9dac1b875c1 --- /dev/null +++ b/drivers/media/tuners/qm1d1b0004.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Sharp QM1D1B0004 satellite tuner + * + * Copyright (C) 2014 Akihiro Tsukada + * + * based on (former) drivers/media/pci/pt1/va1j5jf8007s.c. + */ + +/* + * Note: + * Since the data-sheet of this tuner chip is not available, + * this driver lacks some tuner_ops and config options. + * In addition, the implementation might be dependent on the specific use + * in the FE module: VA1J5JF8007S and/or in the product: Earthsoft PT1/PT2. + */ + +#include +#include +#include +#include "qm1d1b0004.h" + +/* + * Tuner I/F (copied from the former va1j5jf8007s.c) + * b[0] I2C addr + * b[1] "0":1, BG:2, divider_quotient[7:3]:5 + * b[2] divider_quotient[2:0]:3, divider_remainder:5 + * b[3] "111":3, LPF[3:2]:2, TM:1, "0":1, REF:1 + * b[4] BANDX, PSC:1, LPF[1:0]:2, DIV:1, "0":1 + * + * PLL frequency step := + * REF == 0 -> PLL XTL frequency(4MHz) / 8 + * REF == 1 -> PLL XTL frequency(4MHz) / 4 + * + * PreScaler := + * PSC == 0 -> x32 + * PSC == 1 -> x16 + * + * divider_quotient := (frequency / PLL frequency step) / PreScaler + * divider_remainder := (frequency / PLL frequency step) % PreScaler + * + * LPF := LPF Frequency / 1000 / 2 - 2 + * LPF Frequency @ baudrate=28.86Mbps = 30000 + * + * band (1..9) + * band 1 (freq < 986000) -> DIV:1, BANDX:5, PSC:1 + * band 2 (freq < 1072000) -> DIV:1, BANDX:6, PSC:1 + * band 3 (freq < 1154000) -> DIV:1, BANDX:7, PSC:0 + * band 4 (freq < 1291000) -> DIV:0, BANDX:1, PSC:0 + * band 5 (freq < 1447000) -> DIV:0, BANDX:2, PSC:0 + * band 6 (freq < 1615000) -> DIV:0, BANDX:3, PSC:0 + * band 7 (freq < 1791000) -> DIV:0, BANDX:4, PSC:0 + * band 8 (freq < 1972000) -> DIV:0, BANDX:5, PSC:0 + * band 9 (freq < 2150000) -> DIV:0, BANDX:6, PSC:0 + */ + +#define QM1D1B0004_PSC_MASK (1 << 4) + +#define QM1D1B0004_XTL_FREQ 4000 +#define QM1D1B0004_LPF_FALLBACK 30000 + +static const struct qm1d1b0004_config default_cfg = { + .lpf_freq = QM1D1B0004_CFG_LPF_DFLT, + .half_step = false, +}; + +struct qm1d1b0004_state { + struct qm1d1b0004_config cfg; + struct i2c_client *i2c; +}; + + +struct qm1d1b0004_cb_map { + u32 frequency; + u8 cb; +}; + +static const struct qm1d1b0004_cb_map cb_maps[] = { + { 986000, 0xb2 }, + { 1072000, 0xd2 }, + { 1154000, 0xe2 }, + { 1291000, 0x20 }, + { 1447000, 0x40 }, + { 1615000, 0x60 }, + { 1791000, 0x80 }, + { 1972000, 0xa0 }, +}; + +static u8 lookup_cb(u32 frequency) +{ + int i; + const struct qm1d1b0004_cb_map *map; + + for (i = 0; i < ARRAY_SIZE(cb_maps); i++) { + map = &cb_maps[i]; + if (frequency < map->frequency) + return map->cb; + } + return 0xc0; +} + +static int qm1d1b0004_set_params(struct dvb_frontend *fe) +{ + struct qm1d1b0004_state *state; + u32 frequency, pll, lpf_freq; + u16 word; + u8 buf[4], cb, lpf; + int ret; + + state = fe->tuner_priv; + frequency = fe->dtv_property_cache.frequency; + + pll = QM1D1B0004_XTL_FREQ / 4; + if (state->cfg.half_step) + pll /= 2; + word = DIV_ROUND_CLOSEST(frequency, pll); + cb = lookup_cb(frequency); + if (cb & QM1D1B0004_PSC_MASK) + word = (word << 1 & ~0x1f) | (word & 0x0f); + + /* step.1: set frequency with BG:2, TM:0(4MHZ), LPF:4MHz */ + buf[0] = 0x40 | word >> 8; + buf[1] = word; + /* inconsisnten with the above I/F doc. maybe the doc is wrong */ + buf[2] = 0xe0 | state->cfg.half_step; + buf[3] = cb; + ret = i2c_master_send(state->i2c, buf, 4); + if (ret < 0) + return ret; + + /* step.2: set TM:1 */ + buf[0] = 0xe4 | state->cfg.half_step; + ret = i2c_master_send(state->i2c, buf, 1); + if (ret < 0) + return ret; + msleep(20); + + /* step.3: set LPF */ + lpf_freq = state->cfg.lpf_freq; + if (lpf_freq == QM1D1B0004_CFG_LPF_DFLT) + lpf_freq = fe->dtv_property_cache.symbol_rate / 1000; + if (lpf_freq == 0) + lpf_freq = QM1D1B0004_LPF_FALLBACK; + lpf = DIV_ROUND_UP(lpf_freq, 2000) - 2; + buf[0] = 0xe4 | ((lpf & 0x0c) << 1) | state->cfg.half_step; + buf[1] = cb | ((lpf & 0x03) << 2); + ret = i2c_master_send(state->i2c, buf, 2); + if (ret < 0) + return ret; + + /* step.4: read PLL lock? */ + buf[0] = 0; + ret = i2c_master_recv(state->i2c, buf, 1); + if (ret < 0) + return ret; + return 0; +} + + +static int qm1d1b0004_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + struct qm1d1b0004_state *state; + + state = fe->tuner_priv; + memcpy(&state->cfg, priv_cfg, sizeof(state->cfg)); + return 0; +} + + +static int qm1d1b0004_init(struct dvb_frontend *fe) +{ + struct qm1d1b0004_state *state; + u8 buf[2] = {0xf8, 0x04}; + + state = fe->tuner_priv; + if (state->cfg.half_step) + buf[0] |= 0x01; + + return i2c_master_send(state->i2c, buf, 2); +} + + +static const struct dvb_tuner_ops qm1d1b0004_ops = { + .info = { + .name = "Sharp qm1d1b0004", + + .frequency_min = 950000, + .frequency_max = 2150000, + }, + + .init = qm1d1b0004_init, + + .set_params = qm1d1b0004_set_params, + .set_config = qm1d1b0004_set_config, +}; + +static int +qm1d1b0004_probe(struct i2c_client *client, const struct i2c_device_id *id) +{ + struct dvb_frontend *fe; + struct qm1d1b0004_config *cfg; + struct qm1d1b0004_state *state; + int ret; + + cfg = client->dev.platform_data; + fe = cfg->fe; + i2c_set_clientdata(client, fe); + + fe->tuner_priv = kzalloc(sizeof(struct qm1d1b0004_state), GFP_KERNEL); + if (!fe->tuner_priv) { + ret = -ENOMEM; + goto err_mem; + } + + memcpy(&fe->ops.tuner_ops, &qm1d1b0004_ops, sizeof(fe->ops.tuner_ops)); + + state = fe->tuner_priv; + state->i2c = client; + ret = qm1d1b0004_set_config(fe, cfg); + if (ret != 0) + goto err_priv; + + dev_info(&client->dev, "Sharp QM1D1B0004 attached.\n"); + return 0; + +err_priv: + kfree(fe->tuner_priv); +err_mem: + fe->tuner_priv = NULL; + return ret; +} + +static int qm1d1b0004_remove(struct i2c_client *client) +{ + struct dvb_frontend *fe; + + fe = i2c_get_clientdata(client); + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; + return 0; +} + + +static const struct i2c_device_id qm1d1b0004_id[] = { + {"qm1d1b0004", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, qm1d1b0004_id); + +static struct i2c_driver qm1d1b0004_driver = { + .driver = { + .name = "qm1d1b0004", + }, + .probe = qm1d1b0004_probe, + .remove = qm1d1b0004_remove, + .id_table = qm1d1b0004_id, +}; + +module_i2c_driver(qm1d1b0004_driver); + +MODULE_DESCRIPTION("Sharp QM1D1B0004"); +MODULE_AUTHOR("Akihiro Tsukada"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/tuners/qm1d1b0004.h b/drivers/media/tuners/qm1d1b0004.h new file mode 100644 index 00000000000..7734ed109a2 --- /dev/null +++ b/drivers/media/tuners/qm1d1b0004.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Sharp QM1D1B0004 satellite tuner + * + * Copyright (C) 2014 Akihiro Tsukada + */ + +#ifndef QM1D1B0004_H +#define QM1D1B0004_H + +#include + +struct qm1d1b0004_config { + struct dvb_frontend *fe; + + u32 lpf_freq; /* LPF frequency[kHz]. Default: symbol rate */ + bool half_step; /* use PLL frequency step of 500Hz istead of 1000Hz */ +}; + +/* special values indicating to use the default in qm1d1b0004_config */ +#define QM1D1B0004_CFG_PLL_DFLT 0 +#define QM1D1B0004_CFG_LPF_DFLT 0 + +#endif