From patchwork Wed Mar 28 17:15:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiro TSUKADA X-Patchwork-Id: 10313681 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 35B0B600F6 for ; Wed, 28 Mar 2018 17:15:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 256A7299AA for ; Wed, 28 Mar 2018 17:15:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2423E29F16; Wed, 28 Mar 2018 17:15:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 58B7A29E19 for ; Wed, 28 Mar 2018 17:15:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753070AbeC1RPX (ORCPT ); Wed, 28 Mar 2018 13:15:23 -0400 Received: from mail-pg0-f67.google.com ([74.125.83.67]:37726 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753057AbeC1RPW (ORCPT ); Wed, 28 Mar 2018 13:15:22 -0400 Received: by mail-pg0-f67.google.com with SMTP id n11so1178302pgp.4 for ; Wed, 28 Mar 2018 10:15:21 -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=XqdrKMWwVuXNGdM9whG7/L50jzFDgIdRBKFYhZkhqdc=; b=MfJhk9+taWzdZw2EdXeb9M8e9GupBK6cf1CNPZyOwAvPNet0sZfV7aeuZPP5UtKy1I VFxA1uhU8yj5C+BPsOCvX/XCf0btjEVsxg8B9aSXYtuhVc64pzsIWX0zJHJjyM5/zy4j 1cex8LPVYW0UTK3OC1+ZkMpIqsQzAhA00sZxIjPGN3GePXrzbQt6tA87JzGkbZ92a0jr i8TLlo9AoHtNigOCMFYsZUqnryqjRkyEGz1VsHvO3lD6x5f9p8Pazv7/RiFvbUqMDOCp auBFV8ou+GRlSE1sZb2GYvMsKpSYOc6mtcUQDsIsXcVtFZJrsFc+eUQZj+Me9YxTDNCB r+wQ== 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=XqdrKMWwVuXNGdM9whG7/L50jzFDgIdRBKFYhZkhqdc=; b=c1RNqH27m0TAC38OkrdCs3CMU9RcvJJOhuHlPAfDHGrYPeXGUujmy5q2BiOvfpLVMC 1T94ZCcVK+6D0SiK36TiW8v76Jbzf9f9s+sJNMe8QOBaMD1UFcPXobAmjudfQCNKLvNH kp0Eiz3XRHgLF2tnYvuT7R0Dv0nGeYnDAhP7YTNwbHbAV6Bh3+93WwJmokwdB6ME27gA FNV61JwmySKA8uCii4BdbbzHHia9/wAx8WDrtaLysbpbU9g13LBH7Nahz1B+8OzF4Ask YBC05jHOBLUbyZfbUp9j12krZ8lnA6U5yn3mpmGVZIv8DnZ2F90Bem9bDZopWCYvdnU0 3u7g== X-Gm-Message-State: AElRT7Fxp5Tc/iiboJvvzizqsnWJX4I4FrPetfD2mBTi1Yd39NKysYtF r/FKI9WjbRuFHNYXrfhgb6v1tQ== X-Google-Smtp-Source: AIpwx49l4KNZQ41tyWrrcPNGjSZnyLcMeiJLaxK8HMmpE3IOeGt4I3JtEWPDFZ/1D36tMJUoTgC46w== X-Received: by 10.99.120.5 with SMTP id t5mr3235070pgc.30.1522257321146; Wed, 28 Mar 2018 10:15:21 -0700 (PDT) Received: from localhost.localdomain (softbank219203027033.bbtec.net. [219.203.27.33]) by smtp.googlemail.com with ESMTPSA id t75sm6504450pfe.124.2018.03.28.10.15.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 28 Mar 2018 10:15:20 -0700 (PDT) From: tskd08@gmail.com To: linux-media@vger.kernel.org Cc: mchehab@s-opensource.com, Akihiro Tsukada Subject: [PATCH v2 2/5] tuners: add new i2c driver for Sharp qm1d1b0004 ISDB-S tuner Date: Thu, 29 Mar 2018 02:15:00 +0900 Message-Id: <20180328171503.30541-3-tskd08@gmail.com> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180328171503.30541-1-tskd08@gmail.com> References: <20180328171503.30541-1-tskd08@gmail.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- Changes since v1: - none 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