From patchwork Sun Sep 7 12:41:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiro TSUKADA X-Patchwork-Id: 4858581 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5FE6D9F32F for ; Sun, 7 Sep 2014 12:42:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D541F2012D for ; Sun, 7 Sep 2014 12:42:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5209220127 for ; Sun, 7 Sep 2014 12:42:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752082AbaIGMmV (ORCPT ); Sun, 7 Sep 2014 08:42:21 -0400 Received: from mail-pa0-f51.google.com ([209.85.220.51]:56796 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751873AbaIGMmU (ORCPT ); Sun, 7 Sep 2014 08:42:20 -0400 Received: by mail-pa0-f51.google.com with SMTP id kx10so1279962pab.38 for ; Sun, 07 Sep 2014 05:42:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=xNbCiKVUAjI5XD10HoYDDnp9FFG2mVn4QOcNK15fAo4=; b=rpKo+jmmYZpfxcy5sJdLS/48YffmPBpF5tG+Jz4Wq/KtJ/hZqTKVVY0Cxp7DUUNYt+ QDJwFnT1352g89R9fBg62bfeKDR2uhj3iPT5Kf6Jrr9FI5ngMJndPSLJpN58tETxZlE1 ylSnlTB2PwqH7yDlvoljt5H1AHQV0DSTU9KU2tp1jRgaf66nik+vZh+RP3kgfBXwvF12 gJ79gIM5xzcGDf1gkd3kpl/FfHT8m58a0msiZJQNFXdFY3p9/TuKOPfEyWazZ+Zz3yzV u4pJ+yROM8dwB3rQWaJumN9S+hgmwbhhd0STDOrEPDm+v5LRH3qKCIcnqWkeQog/SS0k l27w== X-Received: by 10.70.24.133 with SMTP id u5mr37489733pdf.87.1410093740076; Sun, 07 Sep 2014 05:42:20 -0700 (PDT) Received: from seabird.localdomain.localdomain (softbank219203027033.bbtec.net. [219.203.27.33]) by mx.google.com with ESMTPSA id om6sm6433106pdb.89.2014.09.07.05.42.17 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 07 Sep 2014 05:42:19 -0700 (PDT) From: tskd08@gmail.com To: linux-media@vger.kernel.org Cc: m.chehab@samsung.com Subject: [PATCH v3 2/4] qm1d1c0042: add driver for Sharp QM1D1C0042 ISDB-S tuner Date: Sun, 7 Sep 2014 21:41:28 +0900 Message-Id: <1410093690-5674-3-git-send-email-tskd08@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1410093690-5674-1-git-send-email-tskd08@gmail.com> References: <1410093690-5674-1-git-send-email-tskd08@gmail.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-8.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Akihiro Tsukada This patch adds driver for qm1d1c0042 tuner chips. It is used as an ISDB-S tuner in earthsoft pt3 cards. Signed-off-by: Akihiro Tsukada --- Changes in v3: - moved to I2C binding model - small improvements in register read/write drivers/media/tuners/Kconfig | 7 + drivers/media/tuners/Makefile | 1 + drivers/media/tuners/qm1d1c0042.c | 456 ++++++++++++++++++++++++++++++++++++++ drivers/media/tuners/qm1d1c0042.h | 38 ++++ 4 files changed, 502 insertions(+) create mode 100644 drivers/media/tuners/qm1d1c0042.c create mode 100644 drivers/media/tuners/qm1d1c0042.h diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig index cd3f8ee..8125d1d 100644 --- a/drivers/media/tuners/Kconfig +++ b/drivers/media/tuners/Kconfig @@ -264,4 +264,11 @@ config MEDIA_TUNER_MXL301RF default m if !MEDIA_SUBDRV_AUTOSELECT help MaxLinear MxL301RF OFDM tuner driver. + +config MEDIA_TUNER_QM1D1C0042 + tristate "Sharp QM1D1C0042 tuner" + depends on MEDIA_SUPPORT && I2C + default m if !MEDIA_SUBDRV_AUTOSELECT + help + Sharp QM1D1C0042 trellis coded 8PSK tuner driver. endmenu diff --git a/drivers/media/tuners/Makefile b/drivers/media/tuners/Makefile index 6d5bf48..04d5efc 100644 --- a/drivers/media/tuners/Makefile +++ b/drivers/media/tuners/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_MEDIA_TUNER_FC0013) += fc0013.o obj-$(CONFIG_MEDIA_TUNER_IT913X) += tuner_it913x.o obj-$(CONFIG_MEDIA_TUNER_R820T) += r820t.o obj-$(CONFIG_MEDIA_TUNER_MXL301RF) += mxl301rf.o +obj-$(CONFIG_MEDIA_TUNER_QM1D1C0042) += qm1d1c0042.o ccflags-y += -I$(srctree)/drivers/media/dvb-core ccflags-y += -I$(srctree)/drivers/media/dvb-frontends diff --git a/drivers/media/tuners/qm1d1c0042.c b/drivers/media/tuners/qm1d1c0042.c new file mode 100644 index 0000000..bcc26fb --- /dev/null +++ b/drivers/media/tuners/qm1d1c0042.c @@ -0,0 +1,456 @@ +/* + * Sharp QM1D1C0042 8PSK tuner driver + * + * Copyright (C) 2014 Akihiro Tsukada + * + * 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 version 2. + * + * + * 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. + */ + +#include +#include "qm1d1c0042.h" + +#define QM1D1C0042_NUM_REGS 0x20 + +static const u8 reg_initval[QM1D1C0042_NUM_REGS] = { + 0x48, 0x1c, 0xa0, 0x10, 0xbc, 0xc5, 0x20, 0x33, + 0x06, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, + 0x00, 0xff, 0xf3, 0x00, 0x2a, 0x64, 0xa6, 0x86, + 0x8c, 0xcf, 0xb8, 0xf1, 0xa8, 0xf2, 0x89, 0x00 +}; + +static const struct qm1d1c0042_config default_cfg = { + .init_freq = 0, + .xtal_freq = 16000, + .lpf = 1, + .fast_srch = 0, + .lpf_wait = 20, + .fast_srch_wait = 4, + .normal_srch_wait = 15, +}; + +struct qm1d1c0042_state { + struct qm1d1c0042_config cfg; + struct i2c_client *i2c; + u8 regs[QM1D1C0042_NUM_REGS]; +}; + +static struct qm1d1c0042_state *cfg_to_state(struct qm1d1c0042_config *c) +{ + return container_of(c, struct qm1d1c0042_state, cfg); +} + +static int reg_write(struct qm1d1c0042_state *state, u8 reg, u8 val) +{ + u8 wbuf[2] = { reg, val }; + int ret; + + ret = i2c_master_send(state->i2c, wbuf, sizeof(wbuf)); + if (ret >= 0 && ret < sizeof(wbuf)) + ret = -EIO; + return (ret == sizeof(wbuf)) ? 0 : ret; +} + +static int reg_read(struct qm1d1c0042_state *state, u8 reg, u8 *val) +{ + struct i2c_msg msgs[2] = { + { + .addr = state->i2c->addr, + .flags = 0, + .buf = ®, + .len = 1, + }, + { + .addr = state->i2c->addr, + .flags = I2C_M_RD, + .buf = val, + .len = 1, + }, + }; + int ret; + + ret = i2c_transfer(state->i2c->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret >= 0 && ret < ARRAY_SIZE(msgs)) + ret = -EIO; + return (ret == ARRAY_SIZE(msgs)) ? 0 : ret; +} + + +static int qm1d1c0042_set_srch_mode(struct qm1d1c0042_state *state, bool fast) +{ + if (fast) + state->regs[0x03] |= 0x01; /* set fast search mode */ + else + state->regs[0x03] &= ~0x01 & 0xff; + + return reg_write(state, 0x03, state->regs[0x03]); +} + +static int qm1d1c0042_wakeup(struct qm1d1c0042_state *state) +{ + int ret; + + state->regs[0x01] |= 1 << 3; /* BB_Reg_enable */ + state->regs[0x01] &= (~(1 << 0)) & 0xff; /* NORMAL (wake-up) */ + state->regs[0x05] &= (~(1 << 3)) & 0xff; /* pfd_rst NORMAL */ + ret = reg_write(state, 0x01, state->regs[0x01]); + if (ret == 0) + ret = reg_write(state, 0x05, state->regs[0x05]); + + if (ret < 0) + dev_warn(&state->i2c->dev, "(%s) failed. [adap%d-fe%d]\n", + __func__, state->cfg.fe->dvb->num, state->cfg.fe->id); + return ret; +} + +/* tuner_ops */ + +static int qm1d1c0042_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + struct qm1d1c0042_state *state; + struct qm1d1c0042_config *cfg; + + state = fe->tuner_priv; + cfg = priv_cfg; + + if (cfg->fe) + state->cfg.fe = cfg->fe; + + state->cfg.init_freq = cfg->init_freq; + + if (cfg->xtal_freq != QM1D1C0042_CFG_XTAL_DFLT) + dev_warn(&state->i2c->dev, + "(%s) changing xtal_freq not supported. ", __func__); + state->cfg.xtal_freq = default_cfg.xtal_freq; + + state->cfg.lpf = cfg->lpf; + state->cfg.fast_srch = cfg->fast_srch; + + if (cfg->lpf_wait != QM1D1C0042_CFG_WAIT_DFLT) + state->cfg.lpf_wait = cfg->lpf_wait; + else + state->cfg.lpf_wait = default_cfg.lpf_wait; + + if (cfg->fast_srch_wait != QM1D1C0042_CFG_WAIT_DFLT) + state->cfg.fast_srch_wait = cfg->fast_srch_wait; + else + state->cfg.fast_srch_wait = default_cfg.fast_srch_wait; + + if (cfg->normal_srch_wait != QM1D1C0042_CFG_WAIT_DFLT) + state->cfg.normal_srch_wait = cfg->normal_srch_wait; + else + state->cfg.normal_srch_wait = default_cfg.normal_srch_wait; + return 0; +} + +/* divisor, vco_band parameters */ +/* {maxfreq, param1(band?), param2(div?) */ +static const u32 conv_table[9][3] = { + { 2151000, 1, 7 }, + { 1950000, 1, 6 }, + { 1800000, 1, 5 }, + { 1600000, 1, 4 }, + { 1450000, 1, 3 }, + { 1250000, 1, 2 }, + { 1200000, 0, 7 }, + { 975000, 0, 6 }, + { 950000, 0, 0 } +}; + +static int qm1d1c0042_set_params(struct dvb_frontend *fe) +{ + struct qm1d1c0042_state *state; + u32 freq; + int i, ret; + u8 val, mask; + u32 a, sd; + s32 b; + + state = fe->tuner_priv; + freq = fe->dtv_property_cache.frequency; + + state->regs[0x08] &= 0xf0; + state->regs[0x08] |= 0x09; + + state->regs[0x13] &= 0x9f; + state->regs[0x13] |= 0x20; + + /* div2/vco_band */ + val = state->regs[0x02] & 0x0f; + for (i = 0; i < 8; i++) + if (freq < conv_table[i][0] && freq >= conv_table[i + 1][0]) { + val |= conv_table[i][1] << 7; + val |= conv_table[i][2] << 4; + break; + } + ret = reg_write(state, 0x02, val); + if (ret < 0) + return ret; + + a = (freq + state->cfg.xtal_freq / 2) / state->cfg.xtal_freq; + + state->regs[0x06] &= 0x40; + state->regs[0x06] |= (a - 12) / 4; + ret = reg_write(state, 0x06, state->regs[0x06]); + if (ret < 0) + return ret; + + state->regs[0x07] &= 0xf0; + state->regs[0x07] |= (a - 4 * ((a - 12) / 4 + 1) - 5) & 0x0f; + ret = reg_write(state, 0x07, state->regs[0x07]); + if (ret < 0) + return ret; + + /* LPF */ + val = state->regs[0x08]; + if (state->cfg.lpf) { + /* LPF_CLK, LPF_FC */ + val &= 0xf0; + val |= 0x02; + } + ret = reg_write(state, 0x08, val); + if (ret < 0) + return ret; + + /* + * b = (freq / state->cfg.xtal_freq - a) << 20; + * sd = b (b >= 0) + * 1<<22 + b (b < 0) + */ + b = (((s64) freq) << 20) / state->cfg.xtal_freq - (((s64) a) << 20); + if (b >= 0) + sd = b; + else + sd = (1 << 22) + b; + + state->regs[0x09] &= 0xc0; + state->regs[0x09] |= (sd >> 16) & 0x3f; + state->regs[0x0a] = (sd >> 8) & 0xff; + state->regs[0x0b] = sd & 0xff; + ret = reg_write(state, 0x09, state->regs[0x09]); + if (ret == 0) + ret = reg_write(state, 0x0a, state->regs[0x0a]); + if (ret == 0) + ret = reg_write(state, 0x0b, state->regs[0x0b]); + if (ret != 0) + return ret; + + if (!state->cfg.lpf) { + /* CSEL_Offset */ + ret = reg_write(state, 0x13, state->regs[0x13]); + if (ret < 0) + return ret; + } + + /* VCO_TM, LPF_TM */ + mask = state->cfg.lpf ? 0x3f : 0x7f; + val = state->regs[0x0c] & mask; + ret = reg_write(state, 0x0c, val); + if (ret < 0) + return ret; + usleep_range(2000, 3000); + val = state->regs[0x0c] | ~mask; + ret = reg_write(state, 0x0c, val); + if (ret < 0) + return ret; + + if (state->cfg.lpf) + msleep(state->cfg.lpf_wait); + else if (state->regs[0x03] & 0x01) + msleep(state->cfg.fast_srch_wait); + else + msleep(state->cfg.normal_srch_wait); + + if (state->cfg.lpf) { + /* LPF_FC */ + ret = reg_write(state, 0x08, 0x09); + if (ret < 0) + return ret; + + /* CSEL_Offset */ + ret = reg_write(state, 0x13, state->regs[0x13]); + if (ret < 0) + return ret; + } + return 0; +} + +static int qm1d1c0042_get_status(struct dvb_frontend *fe, u32 *status) +{ + struct qm1d1c0042_state *state; + int ret; + + *status = 0; + state = fe->tuner_priv; + ret = reg_read(state, 0x0d, &state->regs[0x0d]); + if (ret == 0 && state->regs[0x0d] & 0x40) + *status = TUNER_STATUS_LOCKED; + return ret; +} + +static int qm1d1c0042_sleep(struct dvb_frontend *fe) +{ + struct qm1d1c0042_state *state; + int ret; + + state = fe->tuner_priv; + state->regs[0x01] &= (~(1 << 3)) & 0xff; /* BB_Reg_disable */ + state->regs[0x01] |= 1 << 0; /* STDBY */ + state->regs[0x05] |= 1 << 3; /* pfd_rst STANDBY */ + ret = reg_write(state, 0x05, state->regs[0x05]); + if (ret == 0) + ret = reg_write(state, 0x01, state->regs[0x01]); + if (ret < 0) + dev_warn(&state->i2c->dev, "(%s) failed. [adap%d-fe%d]\n", + __func__, fe->dvb->num, fe->id); + return ret; +} + +static int qm1d1c0042_init(struct dvb_frontend *fe) +{ + struct qm1d1c0042_state *state; + u8 val; + int i, ret; + + state = fe->tuner_priv; + memcpy(state->regs, reg_initval, sizeof(reg_initval)); + + reg_write(state, 0x01, 0x0c); + reg_write(state, 0x01, 0x0c); + + ret = reg_write(state, 0x01, 0x0c); /* soft reset on */ + if (ret < 0) + goto failed; + usleep_range(2000, 3000); + + val = state->regs[0x01] | 0x10; + ret = reg_write(state, 0x01, val); /* soft reset off */ + if (ret < 0) + goto failed; + + /* check ID */ + ret = reg_read(state, 0x00, &val); + if (ret < 0 || val != 0x48) + goto failed; + usleep_range(2000, 3000); + + state->regs[0x0c] |= 0x40; + ret = reg_write(state, 0x0c, state->regs[0x0c]); + if (ret < 0) + goto failed; + msleep(state->cfg.lpf_wait); + + /* set all writable registers */ + for (i = 1; i <= 0x0c ; i++) { + ret = reg_write(state, i, state->regs[i]); + if (ret < 0) + goto failed; + } + for (i = 0x11; i < QM1D1C0042_NUM_REGS; i++) { + ret = reg_write(state, i, state->regs[i]); + if (ret < 0) + goto failed; + } + + ret = qm1d1c0042_wakeup(state); + if (ret < 0) + goto failed; + + ret = qm1d1c0042_set_srch_mode(state, state->cfg.fast_srch); + if (ret < 0) + goto failed; + + if (state->cfg.init_freq > 0) { + u32 f = fe->dtv_property_cache.frequency; + + fe->dtv_property_cache.frequency = state->cfg.init_freq; + ret = qm1d1c0042_set_params(fe); + fe->dtv_property_cache.frequency = f; + } + return ret; + +failed: + dev_warn(&state->i2c->dev, "(%s) failed. [adap%d-fe%d]\n", + __func__, fe->dvb->num, fe->id); + return ret; +} + +/* I2C driver functions */ + +static const struct dvb_tuner_ops qm1d1c0042_ops = { + .info = { + .name = "Sharp QM1D1C0042", + + .frequency_min = 950000, + .frequency_max = 2150000, + }, + + .init = qm1d1c0042_init, + .sleep = qm1d1c0042_sleep, + .set_config = qm1d1c0042_set_config, + .set_params = qm1d1c0042_set_params, + .get_status = qm1d1c0042_get_status, +}; + + +static int qm1d1c0042_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct qm1d1c0042_state *state; + struct qm1d1c0042_config *cfg; + struct dvb_frontend *fe; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + state->i2c = client; + + cfg = client->dev.platform_data; + fe = cfg->fe; + fe->tuner_priv = state; + qm1d1c0042_set_config(fe, cfg); + memcpy(&fe->ops.tuner_ops, &qm1d1c0042_ops, sizeof(qm1d1c0042_ops)); + + i2c_set_clientdata(client, &state->cfg); + dev_info(&client->dev, "Sharp QM1D1C0042 attached.\n"); + return 0; +} + +static int qm1d1c0042_remove(struct i2c_client *client) +{ + struct qm1d1c0042_state *state; + + state = cfg_to_state(i2c_get_clientdata(client)); + state->cfg.fe->tuner_priv = NULL; + kfree(state); + return 0; +} + + +static const struct i2c_device_id qm1d1c0042_id[] = { + {"qm1d1c0042", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, qm1d1c0042_id); + +static struct i2c_driver qm1d1c0042_driver = { + .driver = { + .name = "qm1d1c0042", + }, + .probe = qm1d1c0042_probe, + .remove = qm1d1c0042_remove, + .id_table = qm1d1c0042_id, +}; + +module_i2c_driver(qm1d1c0042_driver); + +MODULE_DESCRIPTION("Sharp QM1D1C0042 tuner"); +MODULE_AUTHOR("Akihiro TSUKADA"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/tuners/qm1d1c0042.h b/drivers/media/tuners/qm1d1c0042.h new file mode 100644 index 0000000..a0ff466 --- /dev/null +++ b/drivers/media/tuners/qm1d1c0042.h @@ -0,0 +1,38 @@ +/* + * Sharp QM1D1C0042 8PSK tuner driver + * + * Copyright (C) 2014 Akihiro Tsukada + * + * 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 version 2. + * + * + * 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. + */ + +#ifndef QM1D1C0042_H +#define QM1D1C0042_H + +#include "dvb_frontend.h" + + +struct qm1d1c0042_config { + struct dvb_frontend *fe; + + u32 init_freq; /* initial frequency to be tuned. [kHz] */ + u32 xtal_freq; /* [kHz] */ /* currently ignored */ + bool lpf; /* enable LPF */ + bool fast_srch; /* enable fast search mode, no LPF */ + u32 lpf_wait; /* wait in tuning with LPF enabled. [ms] */ + u32 fast_srch_wait; /* with fast-search mode, no LPF. [ms] */ + u32 normal_srch_wait; /* with no LPF/fast-search mode. [ms] */ +}; +/* special values indicating to use the default in qm1d1c0042_config */ +#define QM1D1C0042_CFG_XTAL_DFLT 0 +#define QM1D1C0042_CFG_WAIT_DFLT 0 + +#endif /* QM1D1C0042_H */